U.S. patent application number 13/394850 was filed with the patent office on 2012-07-05 for urinal drain trap.
This patent application is currently assigned to LIXIL CORPORATION. Invention is credited to Kazuhisa Chaya, Shuhei Handa, Satoshi Kitamura, Akiko Kondo, Yuji Nakayama, Kazuteru Nomura, Haruo Yamasaki.
Application Number | 20120167296 13/394850 |
Document ID | / |
Family ID | 44934893 |
Filed Date | 2012-07-05 |
United States Patent
Application |
20120167296 |
Kind Code |
A1 |
Nomura; Kazuteru ; et
al. |
July 5, 2012 |
URINAL DRAIN TRAP
Abstract
Provided is a urinal drain trap which is capable of preventing
diffusion of odor for a long period of time. The urinal drain trap
(10) is equipped with a lid (11) having an inlet (11A); a body (12)
having an outlet (12C); and a tubular partition wall (13). The
interior of the body (12) is divided into a first region (31) and a
second region (32). The first region (31) and the second region
(32) are linked with each other by a third region (33). Sealing
liquid is injected into the first region (31), this sealing liquid
being non-water-soluble, having a lower specific gravity than
urine, and forming a sealing layer (S) at an elevation above
retained urine. In a peripheral area of the lower end of the
partition wall (13), there is formed a connecting portion (14)
which extends laterally. In a peripheral area of the tip of the
connecting portion (14), there is formed a folded portion (15)
which extends upward. Between the partition wall (13) and the
folded portion (15), the inlet (11A) is provided, in such a way as
to form a through opening, at a location where urine flows in from
above. The outlet (12C) is located in the second region (32) and is
open at an elevation above the upper end of the folded portion
(15).
Inventors: |
Nomura; Kazuteru; (Koto-ku,
JP) ; Kitamura; Satoshi; (Koto-ku, JP) ;
Yamasaki; Haruo; (Koto-ku, JP) ; Kondo; Akiko;
(Koto-ku, JP) ; Handa; Shuhei; (Koto-ku, JP)
; Nakayama; Yuji; (Koto-ku, JP) ; Chaya;
Kazuhisa; (Koto-ku, JP) |
Assignee: |
LIXIL CORPORATION
Tokyo
JP
|
Family ID: |
44934893 |
Appl. No.: |
13/394850 |
Filed: |
September 24, 2010 |
PCT Filed: |
September 24, 2010 |
PCT NO: |
PCT/JP2010/066518 |
371 Date: |
March 8, 2012 |
Current U.S.
Class: |
4/311 |
Current CPC
Class: |
E03C 1/281 20130101;
E03C 1/29 20130101 |
Class at
Publication: |
4/311 |
International
Class: |
E03D 13/00 20060101
E03D013/00 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 29, 2009 |
JP |
2009-224791 |
Sep 29, 2009 |
JP |
2009-224799 |
Sep 17, 2010 |
JP |
2010-208921 |
Claims
1. A urinal drain trap including: a lid fitted in an opening
defined in a lower end of a urinal bowl surface and having an inlet
through which urine flowing along the urinal bowl surface further
flows; a body having a sidewall which is formed so as to extend
downward from a peripheral edge of the lid, a bottom which is
formed to be continuous to a lower end of the sidewall, and an
outlet over which collected urine flows; and a hollow partition
wall provided inward of an outer circumferential edge of the lid
and having a lower end that is open with a distance between the
bottom of the body and said lower end, wherein: the body has an
interior which is divided by the partition wall into a first region
defined outside the partition wall and a second region defined
inside the partition wall, the first and second regions
communicating with each other via a third region defined below the
lower end of the partition wall and above the bottom; and a sealing
liquid that is water-insoluble and has a smaller specific gravity
than urine is poured into either the first or the second region
thereby to be formed into a sealing layer over remaining urine, the
urinal drain trap being characterized in that: the lower end of the
partition wall has a peripheral edge that is formed with a
connecting portion extending in a lateral direction toward one of
the first and second regions, the connecting portion having a
distal end peripheral edge formed with a folded portion extending
upward; and the inlet is defined between the partition wall and the
folded portion so that urine flows thereinto from above, and the
outlet is open above an upper end of the folded portion within the
other of said first and second regions.
2. The urinal drain trap according to claim 1, wherein the inlet is
defined so as to extend along the partition wall.
3. The urinal drain trap according to claim 1 or 2, wherein a
predetermined space is defined between the folded portion and the
partition wall.
4. The urinal drain trap according to claim 1 or 2, wherein the
folded portion extends by a length that is equal to or longer than
a central height between a peripheral edge of a distal end of the
connecting portion and an upper surface of the sealing layer.
5. The urinal drain trap according to claim 1 or 2, wherein the
upper end of the folded portion is located lower than an underside
of the sealing layer.
6. The urinal drain trap according to claim 1 or 2, wherein the
folded portion is located at a middle position between the
partition wall and the sidewall.
7. The urinal drain trap according to claim 1 or 2, wherein the
outlet is formed in an upper end of an outflow conduit which rises
from the bottom of the body in the second region and is disposed at
a position biased in a direction in an interior of the partition
wall in a planar view.
8. A urinal drain trap including: a lid fitted in an opening
defined in a lower end of a urinal bowl surface and having an inlet
into which urine having flowed along the urinal bowl surface
further flows; a body having a sidewall which is formed so as to
extend downward from a peripheral edge of the lid, a bottom which
is formed to be continuous to a lower end of the sidewall, and an
outlet over which collected urine flows; and a hollow partition
wall provided inward of an outer circumferential edge of the lid
and formed so as to extend downward from a closed upper end and
having a lower end that is open with a distance between the bottom
of the body and said lower end, wherein: the body has an interior
which is divided by the partition wall into a first region defined
outside the partition wall and a second region defined inside the
partition wall, the first and second regions communicating with
each other via a third region defined below the lower end of the
partition wall and above the bottom; and a sealing liquid that is
water-insoluble and has a smaller specific gravity than urine is
poured into the first region thereby to be formed into a sealing
layer over remaining urine, the urinal drain trap being
characterized in that: the inlet is defined at a location where
urine flows thereinto from above in the first region; and the
outlet is formed in an upper end of an outflow conduit which rises
from the bottom of the body in the second region and is disposed at
a position biased in a direction in an interior of the partition
wall in a planar view.
9. The urinal drain trap according to claim 8, wherein the outflow
conduit has a larger flow passage area than an ascending flow path
defined by an outer surface of the outflow conduit and an inner
surface of the partition wall as the second region is viewed in a
top cross-section.
10. The urinal drain trap according to claim 8 or 9, wherein the
partition wall is formed so as to extend from a middle portion of
the body toward an inner peripheral surface of the sidewall in a
top cross-section of the partition wall.
11. The urinal drain trap according to claim 8 or 9, wherein the
partition wall is formed into a cylindrical shape, and the outflow
conduit is formed into a semi-circular cylindrical shape and
disposed so that an arc-shaped outer surface is located near the
inner surface of the partition wall.
12. The urinal drain trap according to claim 8 or 9, wherein the
third region has a vertical dimension that is larger than a
transverse dimension of a urine descending flow path formed in the
first region and the ascending flow path in a vertically middle
section.
13. The urinal drain trap according to any one of claims 1, 2, 8
and 9, to which a drain conduit is connected and which is formed
into a cartridge type so as to be detachably attached to a recess
that is upwardly open in the lower end of the urinal bowl surface.
Description
TECHNICAL FIELD
[0001] The present invention relates to a urinal drain trap.
BACKGROUND ART
[0002] FIG. 12 of Patent Document 1 discloses a conventional urinal
drain trap. The urinal drain trap is formed into a cartridge type
and includes a lid, a body and a partition wall. The urinal drain
trap is fitted into a circular opening defined in a lower end of a
bowl surface of the urinal thereby to be mounted to the urinal. The
lid has a circular shape as viewed in a planar view. The lid has a
central part formed with an inlet through which urine flowing
downwards along the bowl surface further flows into the trap. The
body includes a cylindrical sidewall extending downward from an
outer peripheral edge of the lid, a bottom continuous from a lower
end of the sidewall, and an outlet over which collected urine
flows. The partition wall extends downward from a part of the
underside located on the inward side relative to the outer
peripheral edge of the lid and is formed so as to define a space
together with the bottom therebetween. A folded portion extends in
a crosswise direction from a lower end of the partition wall toward
the inlet side. The folded portion is formed into an inclined
surface ascending toward a distal end thereof.
[0003] The body has an interior that is divided by the partition
wall and the folded portion into a first region located below the
inlet and above the folded portion, a second region where the
outlet is provided, and a third region located below the folded
portion and above the bottom. The outlet is open above the lower
end of the partition wall. The first and second regions communicate
with each other via the third region. The first region is filled
with a sealing liquid which is water-insoluble and has a smaller
specific gravity than urine, whereby a sealing layer is formed so
as to be located above the collected urine.
[0004] Furthermore, FIG. 1 of Patent Document 1 discloses another
conventional urinal drain trap. This urinal drain trap is also
formed into a cartridge type and includes a lid, a body and a
partition wall. The urinal drain trap is fitted into an opening
defined in a lower end of a urinal bowl surface of the urinal
thereby to be mounted to the urinal. The lid has a circular shape
as viewed in a planar view. The body includes a cylindrical
sidewall, a bottom continuous from a lower end of the sidewall, and
an outlet over which collected urine flows. An inlet through which
urine having flowed downward along the bowl surface is formed
between a circumferential edge of the lid and the sidewall of the
body. A partition wall extends downward from a part of the
underside located on the inward side relative to the outer
peripheral edge of the lid and is formed so as to define a space
together with the bottom therebetween. The partition wall has a
lower end which is open and is formed into a cylindrical shape.
[0005] The body has an interior that is divided by the partition
wall into a first region located outside the partition wall and a
second region located inside the partition wall. The first and
second regions communicate with each other via a third region
located below the lower end of the partition wall and above the
bottom. The first region is filled with a sealing liquid which is
water-insoluble and has a smaller specific gravity than urine,
whereby a sealing layer is formed so as to be located above the
collected urine.
[0006] The inlet is provided at a location where urine flows from
above therethrough into the first region. The outlet is formed in
an upper end of a cylindrical outlet conduit which rises from the
bottom of the body in the second region and is disposed to be
concentric with the partition wall.
[0007] In the foregoing conventional urine drain traps, the sealing
layer can prevent foul odors of urine collected in the body from
being given out through the inlet. Furthermore, back-flow of odor
from a drainage path communicating with a downstream side can be
blocked by the urine collected in the body. Consequently, a urinal
having the urinal drain trap does not produce odor from the inlet
into the toilet booth without use of flush water, whereupon the
urinal can favorably be used.
PRIOR ART DOCUMENT
Patent Documents
[0008] Patent Document 1: Japanese Patent No. 3515785
SUMMARY OF THE INVENTION
Problem to be Overcome by the Invention
[0009] However, urine swiftly flows from the first region into the
third region in the case of the urinal drain trap disclosed in FIG.
12 of Patent Document 1 since the first region has a short flow
path. Consequently, the sealing liquid tends to be conveyed into
the third region with the urine flowing into the third region.
Furthermore, since the folded portion is the inclined surface
gently descending toward a downstream side in the third region, the
flow path has less vertical changes such that the sealing liquid
conveyed into the third region tends to be conveyed further into
the downstream second region, tapping into the flow of urine. The
sealing liquid conveyed into the second region has a smaller
specific gravity than urine, the buoyancy causes the sealing liquid
to ascend in the second region. Thus, the sealing liquid conveyed
into the second region cannot be returned into the first region,
thereby flowing outward through the outlet. Consequently, long-term
use of the urinal drain trap results in gradual flow of the sealing
liquid out of the outlet, reducing an amount of the sealing liquid
and thinning the sealing layer. When the sealing layer is thinned,
there is a possibility that foul odors of collected urine may be
produced out of the inlet.
[0010] Furthermore, in the urinal drain trap disclosed in FIG. 1 of
Patent Document 1, the outlet conduit is disposed to be concentric
with the partition wall, and an ascending flow path of the urine in
the second region is formed so as to provide a predetermined
distance between an outer surface of the outlet conduit and an
inner surface of the partition wall. Since urine remains in this
space, gel urinary calculi tend to adhere to the surface in this
space. When the space between the outer surface of the outlet
conduit and the inner surface of the partition wall is narrow, the
gel urinary calculi adherent to the outer surface of the outlet
conduit and the inner surface of the partition wall accumulate,
there is a possibility that the ascending flow path may early be
clogged.
[0011] The present invention was made in view of the
above-described prior circumstances and has as a problem to be
solved an object to provide a urinal drain trap which can prevent
foul odors from being produced for a long period and can desirably
drain urine for a long period.
Means for Overcoming the Problem
[0012] A urinal drain trap according to the present invention
includes a lid fitted in an opening defined in a lower end of a
urinal bowl surface and having an inlet through which urine flowing
along the urinal bowl surface further flows; a body having a
sidewall which is formed so as to extend downward from a peripheral
edge of the lid, a bottom which is formed to be continuous to a
lower end of the sidewall, and an outlet over which collected urine
flows; and a hollow partition wall provided inward of an outer
circumferential edge of the lid and having a lower end that is open
with a distance between the bottom of the body and said lower end,
wherein the body has an interior which is divided by the partition
wall into a first region defined outside the partition wall and a
second region defined inside the partition wall, the first and
second regions communicating with each other via a third region
defined below the lower end of the partition wall and above the
bottom; and a sealing liquid that is water-insoluble and has a
smaller specific gravity than urine is poured into either the first
or the second region thereby to be formed into a sealing layer over
remaining urine, the urinal drain trap being characterized in that
the lower end of the partition wall has a peripheral edge that is
formed with a connecting portion extending in a lateral direction
toward one of the first and second regions, the connecting portion
having a distal end peripheral edge formed with a folded portion
extending upward; and the inlet is defined between the partition
wall and the folded portion so that urine flows thereinto from
above, and the outlet is open above an upper end of the folded
portion within the other of said first and second regions.
[0013] In the above-described urinal drain trap, the urine having
entered into the inlet passes through the sealing layer, flowing
between the partition wall and the folded portion from above. Since
the lower ends of the partition wall and the folded portion are
connected to each other by the connecting portion, the urine is
changed from downward flow to upward flow in a region (hereinafter,
"convection region") surrounded by the partition wall, the
connecting portion and the folded portion, whereupon a convective
flow of urine occurs. As the result of urinary inflow, the sealing
layer is agitated such that much of the sealing liquid drawn below
the sealing layer is engulfed in the convective flow. Consequently,
the sealing liquid remains in a convection region. When the
convective flow ceases with stop of urinary inflow, the sealing
liquid remaining in the convection region upwardly moves by
buoyancy thereof, joining the sealing layer.
[0014] Furthermore, when flowing over an upper end of the folded
portion from the convection region and further flowing along the
downward flow path toward the third region, urine has a lower
momentum than when flowing into the convection region. Accordingly,
when flowing over the upper end of the folded portion from the
convection region while joining the flow of urine, the sealing
liquid is conveyed to the middle location of the downward flow
path, remaining there. Thus, the sealing liquid has less
possibility of being conveyed to the third region. When urine
ceases to flow, the sealing liquid remaining in the downward flow
path is surfaced by its buoyancy, joining the upper sealing
layer.
[0015] Thus, the sealing liquid has less possibility of being
conveyed to the third region by the urinary flow. This can suppress
outflow of the sealing liquid through the outlet provided
downstream relative to the third region. Consequently, a reduction
in the sealing liquid can be suppressed even in the use for a long
period of time, and the sealing layer is less subject to
thinning.
[0016] Accordingly, the urinal drain trap according to the
invention can prevent foul odors from being produced for a long
period of time.
[0017] The inlet may be defined so as to extend along the partition
wall. In this case, urine inflowing through the inlet is dispersed
such that the momentum of urine flowing into the body is dampened.
This suppresses agitation of the sealing layer due to urinal
inflow, whereupon the sealing liquid has less possibility of being
drawn below the sealing layer. Consequently, outflow of the sealing
liquid through the outlet can further be suppressed. Furthermore,
agitation of the sealing layer is suppressed since the urine
inflowing through the inlet further flows downward along the
surface of the partition wall. This can also suppress outflow of
the sealing liquid. Consequently, the sealing layer is less subject
to thinning, and foul odors can be prevented from being
produced.
[0018] A predetermined space may be defined between the folded
portion and the partition wall. In this case, convective flow can
be caused in the entire convective region since the predetermined
space is defined between the folded portion and the partition wall.
This can reduce an amount of sealing liquid flowing over the upper
end of the folded portion from the convective region while joining
the flow of urine, resulting in suppression of outflow of the
sealing liquid. Furthermore, even when adhering to an inner surface
of the convective region, the gel urinary calculus has less
possibility of non-uniformly accumulating in the convective region.
Accordingly, outflow of the sealing liquid which could result from
accumulation of gel urinary calculi at a specific portion can be
suppressed, whereupon no convective flow is caused in the portion.
Consequently, the sealing layer is less subject to thinning such
that foul odors can be prevented from being produced.
[0019] The folded portion may extend by a length that is equal to
or longer than a central height between a peripheral edge of a
distal end of the connecting portion and an upper surface of the
sealing layer. In this case, since the convection flow is reliably
formed in the convection region, the sealing liquid drawn below the
sealing layer is sucked into the convective flow in the convection
region, remaining in the convection region. Furthermore, since the
upper end of the folded portion is disposed at a high position in
the first region, an amount of sealing liquid flowing over the
upper end of the folded portion from the convection region can be
reduced. This can suppress outflow of the sealing liquid through
the outlet, whereupon the sealing layer is less subject to thinning
and foul odors can be prevented from being produced.
[0020] The upper end of the folded portion may be located lower
than an underside of the sealing layer. In this case, drawing the
sealing liquid from the sealing layer can be suppressed when urine
flows over the upper end of the folded portion from the convection
region to flow to the downstream side. This can suppress outflow of
the sealing liquid through the outlet, whereupon the sealing layer
is less subject to thinning and foul odors can be prevented from
being produced.
[0021] The folded portion may be located at a middle position
between the partition wall and the sidewall. In this case, since
the distance between the partition wall and the folded portion is
equal to the distance between the folded portion and the sidewall,
gel urinary calculi can be prevented from early accumulating at a
specific place, whereupon the clogging due to the accumulation of
gel urinary calculi can be prevented.
[0022] Another urinal drain trap according to the invention
including a lid fitted in an opening defined in a lower end of a
urinal bowl surface and having an inlet into which urine having
flowed along the urinal bowl surface further flows; a body having a
sidewall which is formed so as to extend downward from a peripheral
edge of the lid, a bottom which is formed to be continuous to a
lower end of the sidewall, and an outlet over which collected urine
flows; and a hollow partition wall provided inward of an outer
circumferential edge of the lid and formed so as to extend downward
from a closed upper end and having a lower end that is open with a
distance between the bottom of the body and said lower end, wherein
the body has an interior which is divided by the partition wall
into a first region defined outside the partition wall and a second
region defined inside the partition wall, the first and second
regions communicating with each other via a third region defined
below the lower end of the partition wall and above the bottom; and
a sealing liquid that is water-insoluble and has a smaller specific
gravity than urine is poured into the first region thereby to be
formed into a sealing layer over remaining urine, the urinal drain
trap being characterized in that the inlet is defined at a location
where urine flows thereinto from above in the first region; and the
outlet is formed in an upper end of an outflow conduit which rises
from the bottom of the body in the second region and is disposed at
a position biased in a direction in an interior of the partition
wall in a planar view.
[0023] The outflow conduit is disposed at the position biased in
one direction in the interior of the partition wall as the urinal
drain trap is viewed in the planar view. This can increase the
distance between an outer surface of the outflow conduit and the
inner surface of the partition wall at the other side in the planar
view. Consequently, an ascending flow path defined by the outer
surface of the outflow conduit and the inner surface of the
partition wall can be rendered hard to clog even when gel urinary
calculi are accumulated on the outer surface of the outflow conduit
and the inner surface of the partition wall.
[0024] Accordingly, the urinal drain trap according to the
invention can desirably drain urine for a long period of time.
[0025] The outflow conduit may have a larger flow passage area than
the ascending flow path defined by the outer surface of the outflow
conduit and the inner surface of the partition wall as the second
region is viewed in a top cross-section. In this case, since a flow
rate of urine that can flow through the outflow conduit is larger
than a flow rate of the urine that can flow through the ascending
flow path, the outflow conduit can be prevented from being full of
urine flowing through the ascending flow path. This can prevent a
siphon action caused by the outflow conduit full of urine. In other
words, urine that should remain in the urinal drain trap can be
prevented from being discharged due to occurrence of a siphon
action, whereupon water seal can be prevented from disappearing.
Furthermore, even when gel urinary calculi are accumulated on the
inner surface of the downstream side of the outflow conduit, the
situation can be retarded where the outflow conduit is full of
urine flowing through the ascending flow path. Consequently, the
urinal drain trap can desirably be used for a long period of
time.
[0026] The partition wall may be formed so as to extend from a
middle portion of the body toward an inner peripheral surface of
the sidewall as the partition wall is viewed in a top
cross-section. In this case, the flow path area of the outflow
conduit can further be increased. Consequently, the outflow conduit
can be prevented from being full of urine flowing through the
ascending flow path, and occurrence of a siphon action can be
prevented. Furthermore, the situation can be retarded where gel
urinary calculi are accumulated on the inner surface of the
downstream side of the outflow conduit thereby to reduce the flow
path area such that the outflow conduit is full of urine having
flowed from the ascending flow path. Consequently, the urinal drain
trap can desirably be used for a long period of time.
[0027] The partition wall may be formed into a cylindrical shape,
and the outflow conduit may be formed into a semi-circular
cylindrical shape and disposed so that an arc-shaped outer surface
thereof is located near the inner surface of the partition wall. In
this case, the flow path area of the outflow conduit can be
increased while the space can be increased between the outer
surface of the outflow conduit and the inner surface of the
partition wall at the other side in the partition wall in planar
view. This can ensure a sufficient amount of urine flowing from the
outflow conduit, whereupon urine can desirably be discharged.
[0028] The third region may have a vertical dimension that is
larger than a transverse dimension of a descending flow path of
urine formed in the first region and the ascending flow path of
urine in a vertically middle section. In this case, since the
vertical dimension of the third region where gel urinary calculi
are easily accumulated can be increased, the third region can be
prevented from being early clogged even when gel urinary calculi
accumulate in the third region.
[0029] A drain conduit is connected to the urinal drain trap and
the trap may be formed into a cartridge type so as to be detachably
attached to a recess that is upwardly open in the lower end of the
urinal bowl surface. In this case, the whole cartridge can be
changed to another when an amount of the sealing liquid is reduced
or when accumulation of gel urinal calculi results in the clogging.
Consequently, maintenance can easily be carried out. Furthermore,
since the clogging of the urinal drain trap due to accumulation of
gel urinal calculi is suppressed, an exchange frequency of the
cartridge can be reduced.
BRIEF DESCRIPTION OF THE DRAWINGS
[0030] FIG. 1 is a sectional view of a urinal having a urinal drain
trap according to embodiment 1;
[0031] FIG. 2 is a sectional view of the urinal drain trap
according to embodiment 1;
[0032] FIG. 3 is an exploded perspective view of the urinal drain
trap according to embodiment 1;
[0033] FIGS. 4A and 4B are, a sectional view taken along line Q-Q
in FIG. 2 of the urinal drain trap according to embodiment 1, and a
sectional view of the urinal drain trap according to embodiment 5,
respectively;
[0034] FIG. 5 is a sectional view of the urinal drain trap
according to embodiment 2;
[0035] FIG. 6 is a sectional view of the urinal drain trap
according to embodiment 3;
[0036] FIG. 7 is a sectional view of the urinal drain trap
according to embodiment 4;
[0037] FIG. 8 is a sectional view of the urinal drain trap
according to embodiment 6;
[0038] FIG. 9 is an exploded perspective view of the urinal drain
trap according to embodiment 6;
[0039] FIG. 10 is a sectional view of the urinal drain trap
according to embodiment 6, the view taken along line Q-Q in FIG.
8;
[0040] FIG. 11 is a sectional view of the urinal drain trap
acceding to embodiment 7; and
[0041] FIG. 12 is a sectional view of the urinal drain trap
according to embodiment 7, the view taken along line Q-Q in FIG.
11.
MODE FOR CARRYING OUT THE INVENTION
[0042] Embodiments 1 to 7 embodying the urinal drain trap of the
present invention will be described with reference to the
drawings.
Embodiment 1
[0043] The urinal drain trap 10 according to embodiment 1 is formed
into a cartridge type and detachably mounted in a recess 3 which is
upwardly open at a lower end of a bowl surface 2 of a urinal 1 as
shown in FIGS. 1 to 3 and 4A. The urinal 1 is of a wall-mounted
type and is fixed to a wall surface W of a toilet room R. The
recess 3 is formed into a cylindrical storage container 20 which is
mounted on a lower end of the bowl surface 2 of the urinal 1 and
has an open upper end and a bottom.
[0044] The storage container 20 has an upper end to which a locking
member 21 is connected. The locking member 21 is connected to an
upper part of an inner surface of the storage container 20 and
includes an upwardly extending cylindrical portion 21A and a
ring-shaped flange 21B spreading outward from an upper end of the
cylindrical portion 21A. A locking recess 20A is formed in a middle
part of the inner surface of the storage container 20. A locking
convexity 12F provided on a sidewall 12A of a body 12 of the urinal
drain trap 10 is locked in the locking recess 20A. The urinal drain
trap 10 inserted in the storage container 20 is axially turned a
predetermined angle such that the locking convexity 12F can be
locked in the locking recess 20A. Thus, the urinal drain trap 10 of
the cartridge type can detachably be mounted in the storage
container 20.
[0045] A packing 22 is fitted with an outer surface of the locking
member 21 and inserted from above into an opening 2A formed in a
lower end of the bowl surface 2 of the urinal 1. The flange 21B of
the locking member 21 is locked to an upper surface of the
peripheral edge defining the opening 2A. A ring-shaped fastening
member 23 is fitted with the storage container 20 from below and
screwed into a threaded portion formed in an upper outer surface of
the storage container 20 so that an upper surface of the fastening
member 23 is locked to the underside of the peripheral edge of the
opening 2A. The peripheral edge of the opening 2A is thus held
between the flange 21B of the locking member 21 and the fastening
member 23 so that the storage container 20 is mounted in the
opening 2A. The storage container 20 has a connecting conduit 24
extending from a lower end corner thereof. The storage container 20
is connected via the connecting conduit 24 to a drain conduit 4
drawn to the wall surface W.
[0046] The urinal drain trap 10 of the cartridge type includes a
lid 11, a body 12 and a partition wall 13. The lid 11 has a
circular contour shape. The lid 11 is fitted in the opening defined
by the locking member 21 of the storage container 20, namely, the
opening defined in the lower end of the bowl surface 2 of the
urinal 1. A packing P is fitted in an annular recess formed in a
circumferential end of the lid 11. As a result, the inner surface
of the opening defined by the locking member 21 and the outer
surface of the lid 11 are joined with each other in a watertight
manner. Accordingly, urine having flowed along the bowl surface 2
of the urinal 1 further flows onto the upper surface of the lid 11.
The lid 11 has inlets 11A which are formed therethrough and through
which the urine having flowed along the bowl surface 2 further
flows.
[0047] The body 12 includes a sidewall 12A, a bottom 12B and an
outlet 12C. The sidewall 12A is formed into a cylindrical shape and
extends downward from an outer circumferential edge of the lid 11.
The outer circumferential edge of the lid 11 and an upper end of
the sidewall 12A are adhered to each other without interspace
therebetween. A plurality of locking convexities 12F is formed on a
middle part of the outer surface of the sidewall 12A. The locking
convexities 12F are locked in the locking recess 20A so that the
urinal drain trap 10 is detachably mounted in the storage container
20, as described above. The bottom 12B is formed continuously on a
lower end of the sidewall 12A.
[0048] The partition wall 13 is formed into a cylindrical shape and
is provided inward of an outer circumferential edge of the lid 11.
The partition wall 13 has a closed upper end and extends downward
from the upper end thereof. The partition wall 13 has a lower end
which is open while there is a distance between the bottom 12B of
the body 12 and the lower end, whereby the partition wall 13 is
hollow. The partition wall 13 is coaxial with the lid 11. The lid
11 has a plurality of divided inlets 11A disposed along the outer
surface of the partition wall 13 into the ring shape.
[0049] An interior of the body 12 is divided by the partition wall
13 into a first region 31 defined outside the partition wall 13 and
a second region 32 defined inside the partition wall 13. The first
and second regions 31 and 32 communicate with each other via a
third region 33 defined below the lower end of the partition wall
13 and above the bottom 12B of the body 12. The first region 31 is
filled with a sealing liquid that is water-insoluble, has a smaller
specific gravity than urine and forms a sealing layer S over the
remaining urine.
[0050] The partition wall 13 has a ring-shaped connecting portion
14 which is formed on the circumferential edge of the lower end
thereof so as to extend in a lateral direction toward the first
region 31. The connecting portion 14 is formed with a cylindrical
folded portion 15 extending upward from a circumferential edge of a
distal end thereof. A predetermined space is defined between the
folded portion 15 and the partition wall 13. Furthermore, the
folded portion 15 is located midway between the partition wall 13
and the sidewall 12A. More specifically, the folded portion 15, the
partition wall 13 and the body 12 are disposed coaxially.
Furthermore, the folded portion 15 has an upper end which extends
upward so as to be located lower than the underside of the sealing
layer S formed over the urine remaining in the body 12. The folded
portion 15 extends so as to be located higher than a location of a
middle point between the distal end circumferential edge of the
connecting portion 14 and the upper surface of the sealing layer
S.
[0051] The outlet 12C is formed in an upper end of an outflow
conduit 12D rising from the bottom 12B of the body 12 in the second
region 32. The outlet 12C is open above the upper end of the folded
portion 15. The outflow conduit 12D is formed into a
semi-cylindrical shape and disposed with an arc-shaped outer
surface thereof being in contact with the inner surface of the
partition wall 13. More specifically, the outflow conduit 12D is
arranged at a position biased in one direction in the interior of
the partition wall 13 in a planar view.
[0052] The outflow conduit 12D includes a lower part that is bent
along the bottom 12B of the body 12 toward the sidewall 12A. A
drain hole 12E is formed through a part of the bottom 12B where a
downstream end of the outflow conduit 12D is located. The cartridge
type urinal drain trap 10 is mounted in the storage container 20 so
that the drain hole 12E is located at a position facing an upstream
part of the connecting conduit 24.
[0053] The third region 33 has a vertical dimension X that is
larger than a lateral dimension of a urine descending flow path D
formed in the first region 31 and a lateral dimension of a urine
ascending flow path U formed in the second region 32 as viewed in a
vertically middle section.
[0054] In the urinal drain trap 10 having the above-described
construction, urine inflowing through the inlet 11A passes through
the sealing layer S, flowing into the space between the partition
wall 13 and the folded portion 15 from above. The urine changes
from a downward flow to an upward flow in a region surrounded by
the partition wall 13, the connecting portion 14 and the folded
portion 15 (hereinafter, "convection region T"), with the result of
occurrence of convection. The sealing layer S is agitated by the
inflow of urine such that most of the sealing liquid drawn below
the sealing layer is sucked into the convection. Accordingly, the
sealing liquid remains in the convection region T. When the
convection ceases with stop of urinary inflow, the sealing liquid
remaining in the convection region T emerges by buoyancy thereof,
joining the upper sealing layer S.
[0055] Furthermore, when having flowed over an upper end of the
folded portion 15 from the convection region T and flowing along
the urine descending flow path D toward the third region 33, the
urine has a lower momentum than when flowing into the convection
region T. Accordingly, when flowing over the upper end of the
folded portion 15 from the convection region T while joining the
flow of urine, the sealing liquid is conveyed to the middle
location of the urine descending flow path D, remaining there.
Thus, the sealing liquid has less possibility of being conveyed to
the third region 33. Upon cease of urinary flow, the sealing liquid
remaining in the urine descending flow path D emerges by buoyancy
thereof, joining the upper sealing layer S.
[0056] Thus, the sealing liquid has less possibility of being
conveyed to the third region 33 by the urinary flow. This can
suppress outflow of the sealing liquid from the outlet 12C provided
downstream relative to the third region. Consequently, a reduction
in the sealing liquid can be suppressed even in the use for a long
period of time, and the sealing layer S is less subject to
thinning.
[0057] Accordingly, the urinal drain trap 10 according to
embodiment 1 can prevent foul odors from being produced for a long
period of time.
[0058] Furthermore, since the inlets 11A are divided into the
plural inlets which extend along the outer surface of the partition
wall 13 into a ring shape, urine inflowing through the inlets 11A
is dispersed such that the momentum of urine flowing into the body
12 is dampened. This suppresses agitation of the sealing layer S
due to urinal inflow, whereupon the sealing liquid has less
possibility of being drawn below the sealing layer S. Consequently,
outflow of the sealing liquid can further be suppressed.
Furthermore, agitation of the sealing layer S is suppressed since
the urine inflowing through the inlets 11A further flows downward
along the outer surface of the partition wall 13. This can also
suppress outflow of the sealing liquid. Consequently, the sealing
layer S is less subject to thinning, and foul odors can be
prevented from being produced.
[0059] Furthermore, since the predetermined space is defined
between the folded portion 15 and the partition wall 13, convective
flow can be caused in the entire convection region T. This can
reduce an amount of sealing liquid flowing over the upper end of
the folded portion 15 from the convection region T while the
sealing liquid joins the flow of urine. Furthermore, even when
having adhered to an inner surface of the convection region T, the
gel urinary calculi have less possibility of being non-uniformly
accumulated in the convection region T. Accordingly, outflow of the
sealing liquid which could result from accumulation of gel urinary
calculi at a specific portion can be suppressed, whereupon no
convective flow is caused in the portion. Consequently, the sealing
layer S is less subject to thinning such that foul odors can be
prevented from being produced.
[0060] Furthermore, since the folded portion 15 extends by a length
that is equal to or longer than a central height between a
peripheral edge of a distal end of the connecting portion 14 and an
upper surface of the sealing layer S, the convective flow is
reliably formed in the convection region T, whereupon the sealing
liquid having been drawn below the sealing layer S is sucked into
the convective flow in the convection region T, remaining in the
convection region T. Furthermore, since the upper end of the folded
portion 15 is disposed at a high position in the first region 31,
an amount of sealing liquid flowing over the upper end of the
folded portion 15 from the convection region T can be reduced. This
can suppress outflow of the sealing liquid, whereupon the sealing
layer S is less subject to thinning and foul odors can be prevented
from being produced.
[0061] Furthermore, since the upper end of the folded portion 15 is
located lower than an underside of the sealing layer S, drawing the
sealing liquid from the sealing layer S can be suppressed when
urine flows over the upper end of the folded portion 15 from the
convection region T to flow to the downstream side. This can
suppress outflow of the sealing liquid, whereupon the sealing layer
S is less subject to thinning and foul odors can be prevented from
being produced.
[0062] Furthermore, since the folded portion 15 is located midway
between the partition wall 13 and the sidewall 12A, gel urinary
calculi can be prevented from early accumulating in the convection
region T and at a specific place in the urine descending flow path
D defined between the folded portion 15 and the sidewall 12A,
whereupon the clogging due to the accumulation of gel urinary
calculi can be prevented.
[0063] Furthermore, the third region 33 has a vertical dimension X
that is larger than transverse dimensions Y and Z of the urine
descending flow path D formed in the first region 31 and the urine
ascending flow path U formed in the second region 32, as viewed in
a vertically middle section. More specifically, since the vertical
dimension of the third region where gel urinary calculi are easily
accumulated can be increased, the third region has less possibility
of being clogged by the accumulation of gel urinary calculi.
Consequently, urine can desirably be discharged.
[0064] Furthermore, since the urinal drain trap 10 is formed into a
cartridge type, the whole cartridge can be changed to a new one
when an amount of the sealing liquid has been reduced or
accumulation of gel urinary calculi has resulted in the clogging.
Consequently, maintenance can easily be carried out. Furthermore,
since the clogging of the urinal drain trap due to accumulation of
gel urinary calculi is suppressed, an exchange frequency of the
cartridge can be reduced.
[0065] Furthermore, in the urinal drain trap 10 having the
above-described construction, the partition wall 13 is formed into
a cylindrical shape, and the outflow conduit 12D is formed into a
semi-cylindrical shape and disposed with an arc-shaped outer
surface in contact with the inner surface of the partition wall 13,
whereupon the outflow conduit 12D is disposed at the position
biased to one side in the interior of the partition wall 13 as the
urinal drain trap 10 is viewed in a planar view. This can increase
the distance between an outer surface of the outflow conduit 12D
and the inner surface of the partition wall 13 at the other side as
the urinal drain trap 10 is viewed in the planar view.
Consequently, an upward flow path defined by the outer surface of
the outflow conduit 12D and the inner surface of the partition wall
13 can be rendered hard to clog even when gel urinary calculi
accumulate on the outer surface of the outflow conduit 12D and the
inner surface of the partition wall 13.
[0066] Accordingly, the urinal drain trap 10 according to the
embodiment 1 can desirably drain urine for a long period of
time.
[0067] Furthermore, the flow path area of the outflow conduit 12D
can be increased while the distance between the outer surface of
the outflow conduit 12D and the inner surface of the partition wall
13 at the other side in the partition wall 13 as the urinal drain
trap 10 is viewed in the planar view. This can ensure a sufficient
amount of urine flowing from the outflow conduit 12D, whereupon
urine can desirably be discharged.
Embodiment 2
[0068] The urinal drain trap 110 according to embodiment 2 includes
a body 112 directly mounted on a lower end of the bowl surface 2 of
the urinal 1 as shown in FIG. 5. The locking member 21 is connected
to the upper end of the body 112. The body 112 is inserted from
above into the opening 2A formed in the lower end the bowl surface
2, so that the flange 21B of the locking member 21 is locked by an
upper surface of the peripheral portion of the opening 2A. A
threaded portion is formed in an upper part of the outer surface of
the body 112. The ring-shaped fastening member 23 is fitted with
the body 112 from below and has an upper surface which is locked to
the underside of the peripheral edge of the opening 2A. The
fastening member 23 is screwed into the threaded portion formed in
the outer surface of the body 112. The peripheral edge of the
opening 2A is thus held between the flange 21B of the locking
member 21 and the fastening member 23, whereby the body 112 is
mounted in the opening 2A.
[0069] Furthermore, the body 112 has the connecting conduit 124
extending from a lower end corner thereof. The connecting conduit
124 has an upstream end to which the outflow conduit 112D rising in
the second region 32 is connected. The outflow conduit 112D has an
upper end in which the outlet 112C is formed. The outlet 112C is
open above the upper end of the folded portion 15. The outflow
conduit 112D is formed into the semi-cylindrical shape and disposed
with the arc-shaped outer surface thereof being in contact with the
inner surface of the partition wall 13. More specifically, the
outflow conduit 112D is arranged at a position biased in one
direction in the interior of the partition wall 13 as viewed in the
planar view. The connecting conduit 124 has a lower end connected
to the drain conduit 4 drawn through the wall surface W.
[0070] Furthermore, the lid 11 is detachably attached to the body
112. Accordingly, when the body 112 is clogged due to accumulation
of gel urinary calculi therein or the like, the lid 11 is detached
and a cause of the clogging can be eliminated. The other
construction of the urinal drain trap 110 according to the
embodiment 2 is the same as that according to the embodiment 1.
Identical parts in the embodiment 2 are labeled by the same
reference symbols as those in the embodiment 1 and detailed
description of these parts will be eliminated.
[0071] In the urinal drain trap 110 having the above-described
construction, too, much of the sealing liquid drawn below the
sealing layer S is sucked into the convention caused in the
convection region T, remaining in the convection region T.
Accordingly, upon stop of urinary inflow, the sealing liquid
remaining in the convection region T emerges by buoyancy thereof,
joining the upper sealing layer S. Furthermore, the sealing liquid
flowing over the upper end of the folded portion 15 from the
convection region T is conveyed to the middle of the urine
descending flow path D but has less possibility of being conveyed
to the third region 33. Upon cease of urinary flow, the sealing
liquid remaining in the urine descending flow path D emerges by
buoyancy thereof, joining the upper sealing layer S. Thus, the
sealing liquid has less possibility of being conveyed to the third
region 33 by the urinary flow. This can suppress outflow of the
sealing liquid through the outlet 12C provided downstream relative
to the third region 33. Consequently, a reduction in the sealing
liquid can be suppressed even in the use for a long period of time,
and the sealing layer S is less subject to thinning.
[0072] Accordingly, the urinal drain trap 10 according to
embodiment 2 can prevent foul odors from being produced for a long
period of time.
[0073] Furthermore, in the urinal drain trap 110, the partition
wall 13 is formed into a cylindrical shape, and the outflow conduit
112D is formed into a semi-cylindrical shape and disposed with an
arc-shaped outer surface in contact with the inner surface of the
partition wall 13, whereupon the outflow conduit 112D is disposed
at the position biased to one side in the interior of the partition
wall 13 as viewed in a planar view. This can increase the distance
between an outer surface of the outflow conduit 112D and the inner
surface of the partition wall 13 at the other side as the urinal
drain trap 110 is viewed in the planar view. Consequently, an
upward flow path U defined by the outer surface of the outflow
conduit 112D and the inner surface of the partition wall 13 can be
rendered hard to clog even when gel urinary calculi are accumulated
on the outer surface of the outflow conduit 112D and the inner
surface of the partition wall 13.
[0074] Accordingly, the urinal drain trap 110 according to
embodiment 2 can desirably drain urine for a long period of
time.
Embodiment 3
[0075] In the urinal drain trap 210 according to embodiment 3, the
outflow conduit 212D is formed into a cylindrical shape and is
coaxial with the sidewall 212A of the body 212 as shown in FIG. 6.
The outflow conduit 212D is also coaxial with the partition wall
13. As a result, the urine ascending flow path U is defined between
the periphery of the outflow conduit 212D and the partition wall
13. The drain hole 212E facing the upstream portion of the
connecting conduit 24 of the storage container 20 is formed in a
central part of the bottom 212B of the body 212. The other
construction of the urinal drain trap 210 according to the
embodiment 3 is the same as that according to the embodiment 1.
Identical parts in the embodiment 3 are labeled by the same
reference symbols as those in the embodiment 1 and detailed
description of these parts will be eliminated.
[0076] In the urinal drain trap 210 having the above-described
construction, too, much of the sealing liquid drawn below the
sealing layer S is sucked into the convention caused in the
convection region T by the urinary inflow, remaining in the
convection region T. Accordingly, upon stop of urinary inflow, the
sealing liquid remaining in the convection region T emerges by
buoyancy thereof, joining the upper sealing layer S. Furthermore,
the sealing liquid flowing over the upper end of the folded portion
15 from the convection region T is conveyed to the middle of the
urine descending flow path D but has less possibility of being
conveyed to the third region 33. Upon cease of urinary flow, the
sealing liquid remaining in the urine descending flow path D
emerges by buoyancy thereof, joining the upper sealing layer S.
Thus, the sealing liquid has less possibility of being conveyed to
the third region 33 by the urinary flow. This can suppress outflow
of the sealing liquid through the outlet 212C provided downstream
relative to the third region 33. Consequently, a reduction in the
sealing liquid can be suppressed even in the use for a long period
of time, and the sealing layer S is less subject to thinning.
[0077] Accordingly, the urinal drain trap 210 according to
embodiment 3 can prevent foul odors from being produced for a long
period of time.
Embodiment 4
[0078] The urinal drain trap 310 of embodiment 4 includes the lid
311, the body 312 and the partition wall 313 as shown in FIG. 7.
The body 312 has the sidewall 312A, the bottom 312B and the outlet
312C. The sidewall 312A is formed into a cylindrical shape and has
a band-like convex portion 312D formed on the middle of the outer
surface thereof. The body 312 is directly mounted to the lower end
of the bowl surface 2 of the urinal 1 by the locking member 321.
The locking member 321 has a cylindrical portion 321A surrounding
an upper part of the body 312, a ring-shaped flange 321B which is
continuous to an upper end of the cylindrical portion 321A and
spreads outward and an annular recess 321C which is continuous to a
lower end of the cylindrical portion 321A and engages with the
convex portion 312D. The periphery of the opening 2A is formed in
the lower end of the bowl surface 2 of the urinal 1. The locking
member 321 further has a semi-circular locking portion 321D which
holds the periphery of the opening 2A in cooperation with the
flange 321B therebetween. The locking portion 321D is elastically
movable and is elastically moved inward thereby to pass through the
opening 2A from above, thereafter being moved outward. The locking
portion 321D is thus locked by the underside of the peripheral edge
of the opening 2A. The packing 22 is fitted with the outer surface
of the locking member 321 between the flange 321B and the locking
portion 321D.
[0079] The sidewall 312A is provided with an outlet 312C opening
above the upper end of the folded portion 315 which will be
described later. The body 312 is provided with the connecting
conduit 324 extending laterally from the outlet 312C. The urinal
drain trap 310 is connected via the connecting conduit 324
extending laterally from above to the drain conduit 4 drawn through
the wall surface W.
[0080] The lid 311 has a circular outline. The lid 311 is fitted in
an opening defined by the locking member 321 which mounts the body
312 to the lower end of the bowl 2 of the urinal 1, namely, an
opening defined in the lower end of the bowl surface 2 of the
urinal 1. A packing P is fitted in the annular recess formed in the
outer peripheral end surface of the lid 311. As a result, an inner
surface of the opening formed by the locking member 321 is joined
with the outer surface of the lid 311 in the water-tight manner,
whereupon urine flowing downward along the bowl surface 2 of the
urinal 1 further flows onto the upper surface of the lid 311. The
lid 311 has the inlet 311A through which urine having flowed
downward along the bowl surface 2 of the urinal 1 further
inflows.
[0081] The partition wall 313 is formed into the cylindrical shape
and provided inward of the outer circumferential edge of the lid
311. The partition wall 313 has a lower end which is open while
there is a distance between the bottom 312B of the body 312 and the
lower end. The partition wall 313 is coaxial with the lid 311. The
lid 311 has a plurality of divided inlets 311A disposed along the
inner surface of the partition wall 313 into the ring shape.
[0082] An interior of the body 312 is divided by the partition wall
313 into a first region 331 defined outside the partition wall 313
and a second region 332 defined inside the partition wall 313. The
first and second regions 331 and 332 communicate with each other
via a third region 333 located lower than the lower end of the
partition wall 313 and higher than the bottom 312B of the body 312.
The second region 332 is filled with a sealing liquid that is
water-insoluble, has a smaller specific gravity than urine and
forms a sealing layer S over the remaining urine.
[0083] The partition wall 313 has a ring-shaped connecting portion
314 which is formed on the inner circumferential edge of a lower
end thereof so as to extend in a lateral direction toward the
second region 332. The connecting portion 314 is formed with a
cylindrical folded portion 315 extending upward to the middle of
the partition wall 313. The folded portion 315 is located at a
predetermined distance from the partition wall 313. More
specifically, the folded portion 315 and the partition wall 313 are
coaxial with each other. Furthermore, the folded portion 315 has an
upper end which extends upward in the second region 332 so as to be
located lower than the underside of the sealing layer S formed over
the urine remaining in the body 312.
[0084] In the urinal drain trap 310 having the above-described
construction, urine inflowing through the inlet 311A passes through
the sealing layer S, flowing into the space between the partition
wall 313 and the folded portion 315 from above. The urine is
shifted from a descending flow to an ascending flow in the
convection region T surrounded by the partition wall 313, the
connecting portion 314 and the folded portion 315, with the result
of occurrence of convection. The sealing layer S is agitated by the
inflowing urine such that most of the sealing liquid drawn below
the sealing layer S is sucked into the convection. Accordingly, the
sealing liquid remains in the convection region T. When the
convection ceases with stop of urinary inflow, the sealing liquid
remaining in the convection region T emerges by buoyancy thereof,
joining the upper sealing layer S.
[0085] Furthermore, when flowing over the upper end of the folded
portion 315 from the convection region T and then flowing along the
urine descending flow path D toward the third region 333, the urine
has a lower momentum than when flowing into the convection region
T. Accordingly, when flowing over the upper end of the folded
portion 315 from the convection region T while joining the flow of
urine, the sealing liquid is conveyed to the middle location of the
urine descending flow path D, remaining there. Thus, the sealing
liquid has less possibility of being conveyed to the third region
333. Upon cease of urinary flow, the sealing liquid convicting in
the urine descending flow path D emerges by buoyancy thereof,
joining the upper sealing layer S.
[0086] Thus, the sealing liquid has less possibility of being
conveyed to the third region 333 by the urinary flow. This can
suppress outflow of the sealing liquid through the outlet 312C
provided downstream relative to the third region 333. Consequently,
a reduction in the amount of sealing liquid can be suppressed even
in the use for a long period of time, and the sealing layer S is
less subject to thinning.
[0087] Accordingly, the urinal drain trap 310 according to
embodiment 4 can prevent foul odors from being produced for a long
period of time.
[0088] Furthermore, since the plural divided inlets 311A extend
along the inner surface of the partition wall 313 into the ring
shape, urine inflowing through the inlets 311A is dispersed such
that the momentum of urine flowing into the body 312 is dampened.
This suppresses agitation of the sealing layer S due to urinary
inflow, whereupon the sealing liquid has less possibility of being
drawn below the sealing layer S. Consequently, outflow of the
sealing liquid can further be suppressed. Furthermore, agitation of
the sealing layer S is suppressed since the urine inflowing through
the inlets 311A further flows downward along the inner surface of
the partition wall 313. This can also suppress outflow of the
sealing liquid. Consequently, the sealing layer S is less subject
to thinning, and foul odors can be prevented from being
produced.
[0089] Furthermore, since the folded portion 315 is located with a
predetermined space from the partition wall 313, the convective
flow can be caused in the entire convection region T. This can
reduce an amount of sealing liquid flowing over the upper end of
the folded portion 315 from the convection region T while the
sealing liquid joins the flow of urine. Consequently, outflow of
sealing liquid can be suppressed. Furthermore, even when having
adhered to an inner surface of the convection region T, the gel
urinary calculi have less possibility of non-uniformly accumulating
in the convection region T. Accordingly, outflow of the sealing
liquid which could result from accumulation of gel urinary calculi
at a specific portion can be suppressed, whereupon no convective
flow is caused in the portion. Consequently, the sealing layer S is
less subject to thinning such that foul odors can be prevented from
being produced.
[0090] Furthermore, since the upper end of the folded portion 315
is located lower than the underside of the sealing layer S, drawing
the sealing liquid from the sealing layer S can be suppressed when
urine flows over the upper end of the folded portion 315 from the
convection region T to flow to the downstream side. This can
suppress outflow of the sealing liquid, whereupon the sealing layer
S is less subject to thinning and foul odors can be prevented from
being produced.
[0091] Furthermore, since the urine descending flow path D having a
large flow path area is formed in the folded portion 315, gel
urinary calculi do not early accumulate and the clogging due to
accumulation of gel urinary calculi can be suppressed.
Embodiment 5
[0092] The urinal drain trap 410 of embodiment 5 includes the
outflow conduit 412D formed into a cylindrical shape as shown in
FIG. 4B. The outflow conduit 412D has an outer surface in contact
with the inner surface of the partition wall 13. More specifically,
the outflow conduit 412D is disposed at the position biased to one
side in the interior of the partition wall 13 as the urinal drain
trap 410 is viewed in a planar view. The other construction of the
urinal drain trap 410 according to the embodiment 5 is the same as
that according to the embodiment 1. Identical parts in the
embodiment 5 are labeled by the same reference symbols as those in
the embodiment 1 and detailed description of these parts will be
eliminated.
[0093] In the urinal drain trap 410 having the above-described
construction, the distance can be increased between the outer
surface of the outflow conduit 412D and the inner surface of the
partition wall 13 at the other side in the partition wall 13 as the
urinal drain trap 410 is viewed in the planar view. Consequently,
the urine ascending flow path U defined by the outer surface of the
outflow conduit 412D and the inner surface of the partition wall 13
can be rendered hard to clog even when gel urinary calculi have
accumulated on the outer surface of the outflow conduit 412D and
the inner surface of the partition wall 13.
[0094] Accordingly, the urinal drain trap 410 according to
embodiment 5 can desirably drain urine for a long period of
time.
Embodiment 6
[0095] The urinal drain trap 510 of embodiment 6 includes the lid
511, the body 512 and the partition wall 513 as shown in FIGS. 8 to
10. The lid 511 has inlets 511A which are formed therethrough and
into which the urine having flowed along the bowl surface 2 of the
urinal 1 further flows. The body 512 includes the sidewall 512A,
the bottom 512B and the outlet 512C. A plurality of locking
convexities 512F is formed on the middle part of the outer surface
of the sidewall 512A.
[0096] The partition wall 513 extends from a central part of the
body 512 toward the sidewall 512A and is hollow as viewed in a top
cross-section. Furthermore, the partition wall 513 has a side which
extends toward the sidewall 512A and has an outer surface in
contact with the inner surface of the sidewall 512A. The partition
wall 513 includes a part which is located at the central side of
the body 512 and is formed into a semi-circularly annular shape as
viewed in the top cross-section. The lid 512 has a plurality of
divided inlets 511A formed along the outer surface of the
aforementioned part of the partition wall 513. The partition wall
513 includes one part which is located at the central side of the
body 512 and formed into a generally semi-circular shape and the
other part which is formed into a rectangular shape and has a
diameter of the semicircle as a short side thereof, as viewed in
the top cross-section. The rectangular part extends from the short
side toward the sidewall 512A. The semicircular part defines a
semicircular interior therein and the rectangular part defines a
rectangular interior therein as the partition wall 513 is viewed in
the top cross-section thereof.
[0097] The interior of the body 512 is divided by the partition
wall 513 into the first region 531 defined outside the partition
wall 513 and the second region 532 defined inside the partition
wall 513. The first and second regions 531 and 532 communicate with
each other via the third region 533 defined below the lower end of
the partition wall 513 and above the bottom 512B of the body 512.
The first region 531 is filled with the sealing liquid that is
water-insoluble, has a smaller specific gravity than urine and
forms the sealing layer S over the remaining urine.
[0098] The urinal drain trap 510 includes the folded portion 515
which is formed at equal distance from the inner surface of the
sidewall 512A so that the partition wall 513 connects an outer
surface of one of two side surfaces extending from the central part
of the body 512 toward the sidewall 512A to the other outer
surface. The lower end of the folded portion 515 and a part of the
lower end of the partition wall 513 are connected together by a
connecting portion 514. The upper end of the folded portion 515
upwardly extends in the first region 531 to a position located
lower than the underside of the sealing layer S formed above the
urine stored in the body 512. Furthermore, the folded portion 515
extends over the central height between the distal end peripheral
portion of the connecting portion 514 and the upper surface of the
sealing layer S.
[0099] The outlet 512C is formed in an upper end of the outflow
conduit 512D rising from the bottom 512B of the body 512 in the
second region 532. The outlet 512C is open above the upper end of
the folded portion 515. The outflow conduit 512D has a rectangular
opening section and also a rectangular top section of the outer
surface. The outflow conduit 512D includes three-directional outer
surface which is disposed so as to be in contact with an inner
surface of a part of the partition wall 513, which part is formed
so as to define a rectangular interior as viewed in a top
cross-section. More specifically, the outflow conduit 512D is
arranged at a position biased in one direction in the interior of
the partition wall 513 as the urinal drain trap 510 is viewed in a
planar view.
[0100] The ascending flow path U is defined by a part in which the
outer surface of the outflow conduit 512D and the inner surface of
the partition wall 513 are not in contact with each other and which
is surrounded by the outer surface of the outflow conduit 512D and
the inner surface of the partition wall 513. The outflow conduit
512D is formed so as to have a larger flow path area than the
ascending flow path U as the second region 532 is viewed in a top
cross-section.
[0101] The outflow conduit 512D has a lower part which is open
downward. The outflow conduit 512D has at a downstream end thereof
a bottom 512B through which an outlet 512E is formed. The urinal
drain trap 510 of the cartridge type is mounted in the storage
container 20 so that the outlet 512E is disposed at a position
facing the upstream part of the connecting conduit 24 of the
storage container 20. The other construction of the urinal drain
trap according to the embodiment 6 is the same as that according to
the embodiment 1. Identical parts in the embodiment 5 are labeled
by the same reference symbols as those in the embodiment 1 and
detailed description of these parts will be eliminated.
[0102] In the urinal drain trap 510 having the above-described
construction, too, since the outflow conduit 512D is disposed at
the position biased in one direction in the interior of the
partition wall 513, the space between the outer surface of the
outflow conduit 512D and the inner surface of the partition wall
513 can be increased, as the urinal drain trap 510 is viewed in a
planar view. Consequently, the ascending flow path U defined by the
outer surface of the outflow conduit 512D and the inner surface of
the partition wall 513 can be rendered hard to clog even when gel
urinary calculi have accumulated on the outer surface of the
outflow conduit 512D and the inner surface of the partition wall
513.
[0103] Accordingly, the urinal drain trap 510 according to
embodiment 6 can desirably drain urine for a long period of
time.
[0104] Furthermore, since the outflow conduit 512D has a larger
flow passage area than the ascending flow path U as the second
region 532 is viewed in a top cross-section, a flow rate of the
urine that can flow through the outflow conduit 512D is larger than
a flow rate of the urine that can flow through the ascending flow
path U. Accordingly, the outflow conduit 512D can be prevented from
being full of urine flowing through the ascending flow path U. This
can prevent a siphon action caused by the outflow conduit 512D full
of urine. In other words, urine that should remain in the urinal
drain trap 510 can be prevented from being discharged due to
occurrence of a siphon action, whereupon water seal can be
prevented from disappearing. Furthermore, even when gel urinary
calculi have accumulated on the inner surface of the downstream
side of the outflow conduit 512D, the situation can be retarded
where the outflow conduit 512D is full of urine flowing through the
ascending flow path U. Consequently, the urinal drain trap 510 can
desirably be used for a long period of time.
[0105] Furthermore, the flow path area of the outflow conduit 512D
can further be increased since the partition wall 513 is formed so
as to extend from a middle portion of the body 512 toward the
sidewall 512A as the urinal drain trap 510 is viewed in the top
cross-section. Consequently, the outflow conduit 512D can be
prevented from being full of urine flowing from the ascending flow
path U, and occurrence of a siphon action can be prevented.
Furthermore, the situation can be retarded where gel urinary
calculi accumulate on the inner surface of the downstream side of
the outflow conduit 512D thereby to reduce the flow path area such
that the outflow conduit 512D is full of urine flowing from the
ascending flow path U. Consequently, the urinal drain trap 510 can
desirably be used for a long period of time.
[0106] Furthermore, since the lower part of the outflow conduit
512D is downwardly open, urine can be discharged from the outflow
conduit 512D directly into the storage container 20. Consequently,
the outflow conduit 512D can be prevented from being full of urine
flowing from the ascending flow path U, and occurrence of a siphon
action can be prevented.
Embodiment 7
[0107] In the urinal drain trap 560 according to embodiment 7, a
part of the partition wall 513 in contact with the inner surface of
the sidewall 512A is formed integrally with the sidewall 512A, and
a part of the outflow conduit 512D in contact with the inner
surface of the partition wall 513 is formed integrally with the
partition wall 513 in the urinal drain trap 510 according to
embodiment 6, as shown in FIGS. 11 and 12. Consequently, the urinal
drain trap 560 can easily be manufactured and an amount of raw
materials to be consumed can be reduced.
[0108] The outflow conduit 512D forming the ascending flow path U
of the urinal drain trap 560 has an upper end formed into a rounded
or curved surface and a convex portion formed to be continuous from
the rounded surface and having a substantially semicircular shape
in the vertical section. Accordingly, when flowing from the
ascending flow path U into the outflow conduit 512D, urine can
smoothly flow over the upper end of the outflow conduit 512D. The
other construction of the urinal drain trap 560 according to the
embodiment 7 is the same as that according to the embodiment 6.
Identical parts in the embodiment 7 are labeled by the same
reference symbols as those in the embodiment 6 and detailed
description of these parts will be eliminated.
[0109] In the urinal drain trap 560 having the above-described
construction, too, since the outflow conduit is disposed at the
position biased in one direction in the interior of the partition
wall 513, the space between the outer surface of the outflow
conduit and the inner surface of the partition wall 513 can be
increased, as the urinal drain trap 560 is viewed in a planar view.
Consequently, the ascending flow path U defined by the outer
surface of the outflow conduit and the inner surface of the
partition wall 513 can be rendered hard to clog even when gel
urinary calculi accumulate on the outer surface of the outflow
conduit and the inner surface of the partition wall 513.
[0110] Accordingly, the urinal drain trap 560 according to
embodiment 7 can desirably drain urine for a long period of
time.
[0111] Furthermore, since a part corresponding to the outflow
conduit has a larger flow passage area than the ascending flow path
U as the second region 532 is viewed in a top cross-section, a flow
rate of the urine that can flow through the part corresponding to
the outflow conduit is larger than a flow rate of the urine that
can flow through the ascending flow path U. Accordingly, the part
corresponding to the outflow conduit can be prevented from being
full of urine flowing through the ascending flow path U. This can
prevent a siphon action caused by the part corresponding to the
outflow conduit full of urine. In other words, urine that should
remain in the urinal drain trap 560 can be prevented from being
discharged due to occurrence of a siphon action, whereupon water
seal can be prevented from disappearing. Furthermore, even when gel
urinary calculi accumulate on the inner surface of the downstream
side of the part corresponding to the outflow conduit, the
situation can be retarded where the part corresponding to the
outflow conduit is full of urine flowing through the ascending flow
path U. Consequently, the urinal drain trap 560 can desirably be
used for a long period of time.
[0112] Furthermore, the flow path area of the part corresponding to
the outflow conduit can further be increased since the partition
wall 513 is formed so as to extend from a middle portion of the
body 512 toward the sidewall 512A as viewed in the top
cross-section. Consequently, the part corresponding to the outflow
conduit can be prevented from being full of urine flowing through
the ascending flow path U, and occurrence of a siphon action can be
prevented. Furthermore, the situation can be retarded where gel
urinary calculi accumulate on the inner surface of the downstream
side of the part corresponding to the outflow conduit thereby to
reduce the flow path area such that the part corresponding to the
outflow conduit is full of urine flowing through the ascending flow
path U. Consequently, the urinal drain trap 560 can desirably be
used for a long period of time.
[0113] Furthermore, since the lower part of the part corresponding
to the outflow conduit is downwardly open, urine can be discharged
from the part corresponding to the outflow conduit directly into
the storage container 20. Consequently, the part corresponding to
the outflow conduit can be prevented from being full of urine
flowing through the ascending flow path U, and occurrence of a
siphon action can be prevented.
[0114] The present invention should not be limited to the
embodiments 1 to 7 described above with reference to the drawings.
For example, the technical scope of the invention encompasses the
following embodiments:
[0115] (1) Although the urinal drain trap has a cylindrical outer
shape in each of the embodiments 1 to 7, the outer shape of the
urinal drain trap may not be cylindrical. In this case, each of the
partition wall and the folded portion may not be circularly
cylindrical in shape either but may have a mere cylindrical shape
along the sidewall of the body.
[0116] (2) The upper end of the folded portion may be located in
the sealing layer although formed so as to be located lower than
the underside of the sealing layer in each of the embodiments 1 to
7.
[0117] (3) The outflow conduit may not be semi-circularly
cylindrical in shape although formed into the semi-circularly
cylindrical and disposed so that the arc-shaped outer surface
thereof is in contact with the inner surface of the partition wall
in each of the embodiments 1 and 2.
[0118] (4) The body may be formed integrally with a urinal body
although directly mounted to the lower end of the bowl surface of
the urinal in the embodiment 2.
[0119] (5) The outflow conduit may be disposed at the position
biased in one direction in the interior of the partition wall
without being in contact with the inner surface of the partition
wall, as the urinal drain trap is viewed in the planar view,
although disposed with the outer surface thereof being in contact
with the inner surface of the partition wall in each of the
embodiments 1, 2, 5 and 6.
INDUSTRIAL APPLICABILITY
[0120] The present invention is applicable to urinals in which no
flushing water is used.
EXPLANATION OF REFERENCE SYMBOLS
[0121] 1 . . . urinal [0122] 2 . . . bowl surface [0123] 10, 110,
210, 310, 410, 510, 560 . . . urinal drain trap [0124] 11, 311, 511
. . . lid [0125] 11A, 311A, 511A . . . inlet [0126] 12, 112, 212,
312, 512 . . . body [0127] 12A, 112A, 212A, 312A, 512A . . .
sidewall [0128] 12B, 112B, 212B, 312B, 512B . . . bottom [0129]
12C, 112C, 212C, 312C, 512C . . . outlet [0130] 12D, 112D, 212D,
312D, 512D . . . outflow conduit [0131] 13, 313, 513 . . .
partition wall [0132] 14, 314, 514 . . . connecting portion [0133]
15, 315, 515 . . . folded portion [0134] 31, 331, 531 . . . first
region [0135] 32, 332, 532 . . . second region [0136] 33, 333, 533
. . . third region [0137] S . . . sealing layer
* * * * *