U.S. patent application number 14/844311 was filed with the patent office on 2015-12-31 for grey water toilet and flushing method.
The applicant listed for this patent is Kohler Co.. Invention is credited to Clayton C. Garrels, Randy S. Graskamp, William C. Kuru.
Application Number | 20150376883 14/844311 |
Document ID | / |
Family ID | 49209555 |
Filed Date | 2015-12-31 |
View All Diagrams
United States Patent
Application |
20150376883 |
Kind Code |
A1 |
Garrels; Clayton C. ; et
al. |
December 31, 2015 |
GREY WATER TOILET AND FLUSHING METHOD
Abstract
A method of flushing a toilet that includes opening a first
valve to introduce a first supply of grey water into a passage to
prime a siphon; opening a second valve to introduce a second supply
of water into a bowl from a tank, the bowl having an outlet that is
in fluid communication with an inlet of the passage; closing the
first valve to shut off the first supply of water; evacuating the
contents of the bowl through an outlet of the passage by way of the
siphon generated by the introduction of the first supply of water
and the introduction of the second supply of water; and closing the
second valve to shut off the second supply of water.
Inventors: |
Garrels; Clayton C.;
(Sheboygan, WI) ; Kuru; William C.; (Plymouth,
WI) ; Graskamp; Randy S.; (Sheboygan, WI) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Kohler Co. |
Kohler |
WI |
US |
|
|
Family ID: |
49209555 |
Appl. No.: |
14/844311 |
Filed: |
September 3, 2015 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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14019487 |
Sep 5, 2013 |
|
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14844311 |
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61697565 |
Sep 6, 2012 |
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Current U.S.
Class: |
4/376 |
Current CPC
Class: |
E03D 1/34 20130101; E03D
1/08 20130101; E03D 5/006 20130101; E03D 5/003 20130101 |
International
Class: |
E03D 5/00 20060101
E03D005/00; E03D 1/08 20060101 E03D001/08; E03D 1/34 20060101
E03D001/34 |
Claims
1. A method of flushing a toilet, comprising: opening a first valve
to introduce a first supply of water into a passage to prime a
siphon; opening a second valve to introduce a second supply of
water into a bowl from a tank, the bowl having an outlet that is in
fluid communication with an inlet of the passage; closing the first
valve to shut off the first supply of water; evacuating the
contents of the bowl through an outlet of the passage by way of the
siphon generated by the introduction of the first supply of water
and the introduction of the second supply of water; and closing the
second valve to shut off the second supply of water.
2. The method of claim 1, further comprising an actuator, the
actuator being configured to open the first valve and the second
valve, wherein the first supply of water is grey water, and wherein
the second supply of water is fresh water.
3. The method of claim 2, wherein the actuator opens the second
valve after a first time delay from when the actuator opened the
first valve.
4. The method of claim 3, wherein the second valve closes after a
second time delay from when the first valve closes.
5. The method of claim 4, wherein each time delay is approximately
one to three seconds.
6. The method of claim 2, wherein the first valve is in fluid
communication with a storage device configured to store a volume of
grey water therein.
7. The method of claim 6, wherein the storage device is located in
the tank of the toilet, and wherein the grey water in the storage
device is fluidly separated from the fresh water in the tank.
8. The method of claim 6, wherein the storage device is located in
a base housing the bowl.
9. The method of claim 2, wherein the passage includes a first end,
a second end, and a weir that is provided between the first and
second ends, wherein the passage also includes an inlet opening
provided between the weir and the second end, and wherein the inlet
opening being is configured to receive the supply of grey
water.
10. The method of claim 9, wherein a portion of the passage that is
disposed between the weir and the second end defines a waste side
of the passage, and wherein the grey water remains on the waste
side of the passage during the flush cycle.
11. A method of flushing a toilet, comprising: opening a first
valve to introduce a first supply of water into a bowl from a tank,
the bowl having an outlet that is in fluid communication with an
inlet of a passage; opening a second valve to introduce a second
supply of water into the passage to prime a siphon; closing the
second valve to shut off the second supply of water; evacuating the
contents of the bowl through an outlet of the passage by way of the
siphon generated by the introduction of the first supply of water
and the introduction of the second supply of water; and closing the
first valve to shut off the first supply of water.
12. The method of claim 11, further comprising an actuator, the
actuator being configured to open the first valve and the second
valve, wherein the first supply of water is fresh water, and
wherein the second supply of water is grey water.
13. The method of claim 12, wherein the first valve is opened upon
a rotation of the actuator, and wherein the second valve is opened
after a first time delay from when the actuator opened the first
valve, and wherein the first valve closes after a second time delay
from when the second valve closes.
14. The method of claim 12, wherein the first valve is opened upon
a first rotation of the actuator, and wherein the second valve is
opened upon a second rotation of the actuator following the first
rotation of the actuator.
15. The method of claim 11, wherein the first supply of water is
fresh water and the second supply of water is grey water, and
wherein the second valve is in fluid communication with a storage
device configured to store a volume of grey water therein.
16. The method of claim 15, wherein the storage device is located
in the tank, and wherein the grey water in the storage device is
fluidly separated from the fresh water in the tank.
17. The method of claim 16, wherein the tank is supported by a top
surface of a pedestal housing the bowl, and wherein the tank
comprises: a first compartment configured to house the fresh water;
a first inlet fluidly connecting the supply of fresh water and the
first compartment; a first outlet fluidly connecting the first
valve and the first compartment; a second compartment defined by
the storage device and configured to house the grey water; a second
inlet fluidly connecting the supply of grey water and the second
compartment; and a second outlet fluidly connecting the second
valve and the second compartment; wherein the first and second
compartments are fluidly separated.
18. The method of claim 15, wherein the storage device is coupled
to and supported by a base that is configured to house the
bowl.
19. The method of claim 18, wherein the tank holding the supply of
fresh water is also coupled to and supported by the base.
20. The method of claim 19, further comprising a housing that is
configured to close off and conceal the base, wherein the storage
device and the tank are disposed underneath the housing between the
base and the housing.
Description
CROSS-REFERENCE TO RELATED PATENT APPLICATIONS
[0001] This application is a Divisional of U.S. patent application
Ser. No. 14/019,487, filed on Sep. 5, 2013, which claims the
benefit of and priority to U.S. Provisional Patent Application No.
61/697,565, which was filed on Sep. 6, 2012; and both applications
are incorporated by reference herein in their entireties.
BACKGROUND
[0002] This application relates generally to the field of toilets.
More specifically, this application relates to toilets configured
to utilize grey water during operation to reduce the consumption or
use of fresh or clean water during operation.
[0003] Conventional toilets are configured to utilize fresh (e.g.,
potable, clean, purified) water that is delivered to the bowl of
the toilet to help evacuate waste contents from the bowl. In the
U.S., the type of water and amount of water delivered to the bowl
is generally regulated by code or regulation. For example, the
maximum volume (e.g., 6.1 L or 1.6 gallons) of fresh water per
flush cycle has been regulated for some time in the U.S. and there
is an ever increasing pressure for water conservation (i.e., to
consume less fresh water). Accordingly, it would be advantageous to
provide a toilet that is configured to utilize a reduced volume of
fresh water, such as, for example, by introducing a second
alternative volume of water (e.g., grey water) into the flush cycle
without adversely affecting the performance of the toilet.
SUMMARY
[0004] One embodiment relates to a toilet configured to be in fluid
communication with a drain pipe. The toilet includes a tank, a
bowl, and a passage. The tank is configured to hold a first supply
of water therein. The bowl has an inlet and an outlet, wherein the
inlet is in fluid communication with the tank, such that the bowl
is configured to receive the first supply of water. The passage has
a first end, a second end, and an inlet opening provided between
the first end and the second end. The first end is in fluid
communication with the outlet of the bowl, and the second end is
configured to be in fluid communication with the drain pipe. The
passage is configured to receive a second supply of water through
the inlet opening during a flush cycle.
[0005] The passage may include a weir that is provided between the
first and second ends, wherein the inlet opening is provided
between the weir and the second end. A portion of the passage that
is provided between the weir and the second end may be configured
to define a waste side of the passage, wherein the second supply of
water may be grey water and may remain on the waste side of the
passage during the flush cycle, and wherein the first supply of
water may be fresh water.
[0006] The toilet may optionally include a grey water system that
includes a storage device that is configured to hold a volume of
the grey water, where the storage device has an outlet that is in
fluid communication with the inlet opening of the passage. The grey
water system may optionally include a valve disposed between the
inlet opening of the passage and the outlet of the storage device,
where the valve is configured to control the flow of the grey water
from the storage device to the passage. The grey water system may
optionally include a collection device that is configured to
collect the grey water. The grey water system may optionally
include a pump provided between the collection device and the
storage device, where the pump is configured to move the collected
grey water from the collection device to the storage device. The
collection device may, for example, be a drain for one of a shower
and a bath. Alternatively, the collection device may be configured
to capture rainwater.
[0007] According to one example, the storage device is located in
the tank of the toilet. For example, the tank may be configured to
include a compartment for storing the fresh water therein, where
the grey water in the storage device is fluidly separated from the
fresh water in the compartment of the tank. According to another
example, the storage device is located in a base of the toilet that
houses the bowl.
[0008] Another embodiment relates to a method of flushing a toilet,
such as a grey water toilet. The method of flushing the toilet
includes opening a first valve to introduce a first supply of grey
water into a passage to prime a siphon; opening a second valve to
introduce a second supply of water into a bowl from a tank, the
bowl having an outlet that is in fluid communication with an inlet
of the passage; closing the first valve to shut off the first
supply of water; evacuating the contents of the bowl through an
outlet of the passage by way of the siphon generated by the
introduction of the first supply of water and the introduction of
the second supply of water; and closing the second valve to shut
off the second supply of water.
[0009] The method may further include an actuator, the actuator
being configured to open the first valve and the second valve. The
first supply of water may be grey water or fresh water, and the
second supply of water may be fresh water.
[0010] Yet another embodiment relates to a method of flushing a
toilet, such as a grey water toilet. The method of flushing the
toilet includes opening a first valve to introduce a first supply
of water into a bowl from a tank, the bowl having an outlet that is
in fluid communication with an inlet of a passage; opening a second
valve to introduce a second supply of water into the passage to
prime a siphon; closing the second valve to shut off the second
supply of water; evacuating the contents of the bowl through an
outlet of the passage by way of the siphon generated by the
introduction of the first supply of water and the introduction of
the second supply of water; and closing the first valve to shut off
the first supply of water.
[0011] The method may further include an actuator, the actuator
being configured to open the first valve and the second valve upon
actuation. The first supply of water may be fresh water, and the
second supply of water may be fresh water or grey water.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] FIG. 1 is a perspective view of an exemplary embodiment of a
toilet configured to utilize grey water during operation.
[0013] FIG. 2 is a partial-sectional perspective view of an
exemplary embodiment of a toilet configured to utilize grey water
during operation.
[0014] FIG. 3 is a rear perspective view of the toilet of FIG.
2.
[0015] FIG. 4 is another rear perspective view of the toilet of
FIG. 2.
[0016] FIG. 5 is a side-sectional view of the toilet of FIG. 2.
[0017] FIG. 6 is a side-sectional view of the toilet of FIG. 2
showing a first phase of operation.
[0018] FIG. 7 is a side-sectional view of the toilet of FIG. 2
showing a second phase of operation.
[0019] FIG. 8 is a side-sectional view of the toilet of FIG. 2
showing a third phase of operation.
[0020] FIG. 9 is a side-sectional view of the toilet of FIG. 2
showing a fourth phase of operation.
[0021] FIG. 10 is a perspective view of another exemplary
embodiment of a toilet configured to utilize grey water during
operation.
[0022] FIG. 11 is another perspective view of the toilet of FIG.
10.
[0023] FIG. 12 is another perspective view of the toilet of FIG.
10.
[0024] FIG. 13 is yet another perspective view of the toilet of
FIG. 10.
[0025] FIG. 14 is a perspective view of another exemplary
embodiment of a toilet configured to utilize grey water during
operation.
[0026] FIG. 15 is another perspective view of the toilet of FIG.
14.
[0027] FIG. 16 is a partial sectional perspective view of the
toilet of FIG. 14.
[0028] FIG. 17 is another perspective view of the toilet of FIG.
14.
[0029] FIG. 18 is a side-sectional view of an exemplary embodiment
of a toilet configured to utilize grey water and showing a first
phase of operation.
[0030] FIG. 19 is a side-sectional view of the toilet of FIG. 18
showing a second phase of operation.
[0031] FIG. 20 is a side-sectional view of the toilet of FIG. 18
showing a third phase of operation.
[0032] FIG. 21 is a perspective view of yet another exemplary
embodiment of a toilet configured to utilize grey water during
operation, which is shown with a cover in the closed position.
[0033] FIG. 22 is a perspective view of the toilet of FIG. 21 with
the cover shown in an open position.
[0034] FIGS. 23-25 are perspective views of the toilet of FIG. 21
with the housing removed for clarity.
DETAILED DESCRIPTION
[0035] Referring generally to the Figures, disclosed herein are
toilets that are configured to utilize a first source of water,
such as, for example, fresh water delivered to a bowl, and a second
or alternative source of water, such as, for example, grey water
delivered to the passage of the toilet during operation of a flush
cycle. For example, the toilets disclosed herein may utilize a
first source of fresh water introduced into the bowl and a second
source of grey water introduced into the passage during operation
of a flush cycle. This allows the toilets disclosed herein to use a
reduced amount of fresh water during each flush cycle of the toilet
in order to reduce the overall consumption of fresh water used by
the toilet. Alternatively, the toilets disclosed herein may utilize
a first source of fresh water introduced into the bowl and a second
source of fresh water introduced into the passage, such as when the
supply of grey water is low or out, during operation of a flush
cycle.
[0036] The term "grey water" as used herein includes alternative
sources of water, such as unpurified water that has been captured
(e.g., rainwater, salt water, etc.), recycled water (e.g., used
shower and/or bath water, dishwasher, clothes washer, etc.), and
other sources of non-potable water (e.g., city sourced "purple
pipe" non-potable water, etc.). For example, the term "grey water"
as used herein includes, but is not limited to, unpurified water
such as captured rainwater, recycled water from another appliance
and/or plumbing fixture, such as a shower, bath, dishwasher, sink,
washing machine, etc., and the like. The term "fresh water"
includes, but is not limited to, potable water that is typically
safe for consumption by people and may be subject to various
regulations, treatment requirements, etc.
[0037] The toilets may include a grey water system that delivers
(e.g., introduces) the grey water into the toilet, such as during a
flush cycle. The grey water may be introduced into the toilet on
the waste side of the toilet bowl downstream of the water seal,
such as into the passage forming the trapway that fluidly connects
the bowl of the toilet to a drain pipe. The grey water systems may
also include storage devices that hold captured grey water for use
in the toilet. The grey water systems may also include collection
devices that capture the grey water and deliver the captured water
to, for example, the storage device.
[0038] The toilets disclosed herein may be configured to receive an
amount of "grey water" on the waste (e.g., septic) side of the tank
in order to "prime" the siphon pipe of the toilet and reduce the
amount of "fresh" (e.g., potable) water, required to effectively
evacuate the waste material from the toilet during a flush cycle.
During the flushing cycle, the grey water remains on the waste or
septic side of the toilet plumbing fixtures (e.g., on the waste or
septic side of a toilet trap, weir, siphon pipe, passage, trapway,
etc.).
[0039] The toilets, as disclosed herein, utilizing grey water
during a flush cycle provide several advantages, only some of which
are discussed. First, the grey water toilet systems disclosed
herein may advantageously reduce the amount of fresh water required
during each flush cycle, such as by using a volume of grey water in
each flush cycle. Second, the grey water toilet systems disclosed
herein may comply with government regulations, treatment
requirements, etc., since the grey water is configured to remain on
the waste side of the system. For example, should grey water be
introduced into the toilet bowl (rather than the waste side of the
siphon pipe), the grey water would typically need to be treated,
filtered, cleaned, etc. to meet various water regulations.
Maintaining the grey water on the waste or septic side of the
system may avoid many or all of these regulations. Accordingly, the
toilets disclosed herein may advantageously not require any
additional maintenance by the consumer (e.g., the home owner)
relative to level of maintenance for a conventional toilet. For
example, the toilets disclosed herein do not require the periodic
(e.g. weekly, monthly, etc.) replacement of filters or the addition
of chemicals to treat the water to ensure it is safe to use. Third,
the configuration (e.g., size, shape, etc.) and aesthetics of the
grey water toilet are not adversely impacted by the introduction of
the grey water system, since the elements or components, such as
the storage device, may be integrated into an existing toilet or
may be located remote from the toilet. Consumers of the toilets
disclosed herein will also not be able to detect that grey water is
being used, since the toilets will not emit any additional odors
beyond that of a conventional toilet. Further, the actuators that
initiate the flush cycles of the toilets disclosed herein may be
configured to function using existing methods. For example, the
flush cycles of the toilets disclosed herein may be activated by a
handle (e.g., a pivoting handle), a lever (e.g., a lift lever), a
button (e.g., a push button), or any other conventional actuation
device. Thus, from a consumers' perspective, the toilets disclosed
herein may advantageously look and be operated like any other
toilet.
[0040] Furthermore, utilizing grey water during a flush cycle may
not only reduce the amount of fresh water required during a flush
cycle (e.g., from approximately 1.28 gallons per flush to
approximately 0.25 gallons per flush), but also maintain and or
even increase the effectiveness of the flush cycle, such that the
total volume of water required (e.g., less than 1.25 gallons,
approximately 1.0 gallon, etc.), including both fresh and grey
water, may be the same or even less than the volume of fresh water
required by more conventional toilets that utilize a standard flush
cycle.
[0041] FIG. 1 illustrates an exemplary embodiment of a toilet 1
that includes a tank 2, a pedestal 3 (or base), and a seat assembly
4. The tank 2 may include a hollow container 20 for storing the
water (e.g., fresh water, grey water) used during operational
(e.g., flushing) cycles of the toilet 1, a lid (e.g., cover) 21 for
providing selective access into the container 20, and an actuator
22 that is configured to initiate an operational (e.g., flush)
cycle when activated. The actuator 22 may be a button configured to
activate when depressed (or pulled) a predetermined distance or
when touched (e.g., touch sensitive button), a lever configured to
activate when rotated a predetermined angular travel, or any
suitable device configured to activate based upon an input
manipulation by a user. The actuator 22 may be disposed anywhere on
the tank 2, may be provided on another component of the toilet 1,
such as the base, or may be located remotely from the toilet, such
as on a wall or fixture near the toilet.
[0042] The tank 2 may include an inlet opening (not shown)
configured to receive water (e.g., fresh water) from a coupled
water supply (not shown), such as through a hose (e.g., line,
tube). In other words, the tank 2 may receive a supply of fresh
water through the inlet from a fresh water source, which may be a
water line of the dwelling in which the toilet 1 is installed. The
tank 2 may also include an inlet valve assembly (not shown) or
other device configured to control the flow of fresh water from the
fresh water source or supply into the tank through the inlet.
[0043] The pedestal 3 (or base) of the toilet 1 may include a wall
30 having any suitable shape that is configured to form a bowl 31
(as shown in FIG. 1) having an opening formed by an upper rim at
the top of the opening. The bowl 31 may be configured to include a
receptacle (e.g., sump) and an outlet opening (e.g., exit 35 shown
in FIG. 5), wherein the water and waste is collected in the
receptacle until being removed through the outlet opening, such as
upon activation of the actuator 22. The pedestal 3 may also be
configured to include a plurality of walls having varying shapes
that together form a bowl having an opening formed by a rim. The
wall 30 (or walls) of the pedestal may extend downward and/or
rearward from the bowl 31 to form a lower portion 32 configured to
support the pedestal 3 and the toilet 1.
[0044] The pedestal 3 may also include a top member 33 that extends
between two sides of the wall 30 (or between two opposing walls)
and is provided rearward (or behind) the bowl 31, such as, for
example, the rim, wherein the top member 33 forms a plateau for
supporting the tank 2, such as a bottom surface of the container 20
of the tank 2. The plateau formed by the top member 33 may also
provide for coupling of the seat assembly 4 to the pedestal 3 of
the toilet 1. For example, the top member 33 may include one or
more than one opening, wherein each opening is configured to
receive a fastening device (e.g., bolt, screw, etc.) to couple
(e.g., attach) the seat assembly 4 to the top member 33. As another
example, the top member 33 may include one or more than one
fastening device (e.g., bolts, recessed nuts, etc.) integrally
formed therein (i.e., already provided connected or coupled to the
pedestal 3), wherein the fastening device may be used to couple or
secure at least a portion of the seat assembly 4 to the pedestal
3.
[0045] The seat assembly 4 may include a cover member 41 (e.g.,
lid), a seat member 42 (e.g., ring member), and a hinge (not shown
in FIG. 1). The seat member 42 may form an annular member that
encircles an opening, wherein the annular seat member 42 provides a
seating surface for the user of the toilet 1. The seat member 42
may also be pivotally coupled (e.g., attached) to the hinge,
wherein the seat member may rotate (or pivot) about the hinge, such
as between a first lowered or seated position and a second raised
or upright position. The cover member 41 may be configured to be
round, oval, or any other suitable shape. Typically, the profile or
shape of the outer surface of the cover member will be configured
to complement or match (i.e., to be substantially similar to) the
profile of the outer surface of the seat member to improve the
aesthetics of the seat assembly 4 and toilet 1. The cover member 41
may also be coupled to the hinge, wherein the cover member 41 may
rotate (or pivot) about the hinge, such as between a first down or
lowered position and a second raised or upright position. The cover
member 41 may be provided above the seat member 42 in the down
position to thereby cover the opening of the seat member 42, as
well as to conceal the inside of the bowl 31 of the pedestal 3. The
cover member 41 may be configured to rest against the outside
surface of the tank 2, when the cover member 41 is in the upright
position, such that the cover member 41 remains in the upright
position in order for a user to sit upon the seat member 42.
[0046] It should be noted that the shapes and configurations of the
tank, pedestal, and the seat assembly, may vary from the
embodiments shown and described herein, and that the embodiments
disclosed herein are not limiting. It is also noted, for example,
that although the exemplary embodiment of the toilet 1 is shown
configured with the tank 2 formed separately from the pedestal 3
and later coupled to the pedestal, the tank 2 may be integrally
formed with the pedestal 3 as a one-piece design. In other words,
the toilet 1 may be a one-piece design, a two-piece design, or have
any suitable configuration. The grey water toilets as described
herein may be used with a wide variety of toilet configurations,
and all such configurations are intended to be encompassed herein.
The following description of various toilet features is therefore
intended as illustration only of various examples, and it should be
understood by those reviewing the present description that similar
concepts or features may be included in various other
embodiments.
[0047] As shown in FIGS. 1 and 2, the toilet 1 includes a passage 6
(e.g., a trapway) that is configured to extend from the bowl 31
(e.g., the exit or outlet) to a drain pipe 95 (e.g., soil pipe),
such as, for example, provided in the floor of the building (e.g.,
structure, dwelling, etc.) in which the toilet 1 is being
installed. As shown in FIG. 2, the toilet 1 may be configured as a
siphoning toilet, where the passage 6 is configured as a siphoning
trapway to create a siphon during a flushing cycle to evacuate the
waste contents from the bowl 31 to the drain pipe 95.
[0048] Also shown in FIG. 1, the toilet 1 may include a fastening
system 11 for attaching the toilet 1 to a fixture of the building,
such as to the floor. The fastening system 11 may include one or
more than one fastener (e.g., bolt, screw, etc.), where each
fastener engages a hole in the pedestal 3 to thread to another
fastener (e.g., a nut) that is coupled to the drain pipe and/or the
floor. It should be noted that the toilets 1 disclosed herein may
utilize any suitable fastening system, and the examples disclosed
herein are not limiting.
[0049] The toilet (e.g., toilet 1) may also include a grey water
system that introduces the grey water into the toilet. The grey
water system may optionally be configured to capture and store the
grey water. According to an exemplary embodiment, the grey water
system includes a collection device that is configured to capture
or collect the grey water, a storage device that is configured to
store the collected grey water prior to use, and a delivery device
that is configured to introduce the grey water into the toilet
during a flush cycle. It is noted that the toilets disclosed herein
may include any one of any combination of the delivery, storage,
and collection devices/systems.
[0050] FIGS. 2-5 illustrate an exemplary embodiment of a toilet 1
having a grey water system 7 that is configured to introduce
captured grey water into the passage 6 (e.g., the trapway) of the
toilet 1 during a flush cycle. The grey water system 7 includes a
collection device 70 in the form of a pipe 70a and a drain 70b that
is configured to capture shower water from the bath/shower. The
grey water system 7 may also include a pump 71 or other suitable
device that is configured to move, such as through fluid pressure,
the recycled shower water from the collection device 70 to a
storage device 72. As shown the storage device 72 is configured as
a tank or container that is configured to hold a specified volume
of grey water therein. The size (e.g., volume) of the storage
device 72 may be varied, such as, for the anticipated use of the
toilet. In other words, the volume that the storage device 72 can
hold may be tailored to the specific application or type of
dwelling in which the toilet is installed. For example, for a
typical residential dwelling, the storage device 72 may be
configured to hold approximately 10-40 gallons of grey water, where
for a commercial dwelling expecting a greater usage of the toilet,
a relatively larger tank (e.g., one that is configured to hold
40-100 gallons or more) may be provided. It is noted that these
volumes disclosed are examples, and are not limiting, as the
storage devices may be configured to hold any volume of grey water
therein. For example, it may be ideal to size the tank such that
the stored volume of grey water is used by the toilet within a
specific period of time (e.g., one day, one week, etc.).
[0051] According to an exemplary embodiment, the storage device 72
includes an inlet 72a and an outlet 72b. The inlet 72a is
configured to receive the grey water from the collection device 70,
such as through a conveyor, which may include a pipe or a plurality
of pipes. As shown in FIG. 2, a first pipe 73a transfers the grey
water from the collection device 70 to the pump 71, and a second
pipe 73b transfers the grey water from the pump 71 to the storage
device 72. Thus, the second pipe 73b may be connected to and in
fluid communication with the inlet 72a of the storage device 72.
The outlet 72b of the storage device 72 is configured to introduce
the stored grey water to the passage 6. As shown in FIG. 2, a third
pipe 73c transfers the grey water from the storage device 72
through the outlet 72b to the passage 6. The storage tank 72 may
also be vented through the plumbing network. The storage device 72
may optionally include a fresh water inlet to provide a source or
supply of fresh water, such as in the event the grey water runs low
or is used up.
[0052] The toilet 1 may include a valve 74 (e.g., valve assembly)
disposed between the outlet 72b of the storage device 72 and the
passage 6, where the valve 74 controls the flow (e.g., the volume,
the time, etc.) of the grey water from the storage device 72 to the
passage 6. For example, the valve 74 may be in-line with the third
pipe 73c. The valve 74 is configured to open and close to permit or
prohibit (e.g., shut-off) the flow of the grey water therethrough.
The valve 74 may be controlled mechanically, electronically, or a
combination thereof. For example, the actuator 22 may be configured
to control the operation of the valve 74 through a mechanical
feature, such as a lever arm. As another example, the actuator 22
may be configured to activate an electronic device upon actuation,
where the electronic device controls the valve 74. As yet another
example, the actuator 22 may be a button that is configured to send
an electronic signal to a solenoid (or other suitable device) upon
being depressed, where the solenoid controls the opening and
closing of the valve 74. The timing of the valve 74, such as when
to open and when to close, may be varied to tailor the operation of
the valve to the performance of the toilet. For example, the valve
74 may be opened approximately one to two seconds prior to the
siphon.
[0053] The grey water system 7 may also include a dispensing
subsystem 90 for dispensing excess or additional grey water, such
as when the storage device 72 is full. The dispensing subsystem 90
may include one or more than one pipe to dispense the excess grey
water.
[0054] As shown in FIGS. 2-4, the dispensing subsystem 90 includes
a first dispensing pipe 91, a second dispensing pipe 92, and a
third dispensing pipe 93. The first dispensing pipe 91 may fluidly
connect the storage device 72 and the third dispensing pipe 93. For
example, the first dispensing pipe 91 may be provided at a top
portion of the storage device 72 in order for excess grey water to
drain from the storage device 72 when the storage device is full.
As shown, the first dispensing pipe 91 extends upwardly from the
top of the storage device 72.
[0055] The second dispensing pipe 92 may fluidly connect the
collection device 70 and the third dispensing pipe 93. For example,
the second dispensing pipe 92 may be configured to direct excess
grey water to the third dispensing pipe 93 when the storage device
72 is full of grey water. The second dispensing pipe 92 may extend
from a fitting 94, such as a three-way (e.g., tee) fitting, which
interconnects the first pipe 73a of the grey water system, the
second dispensing pipe 92 and a collection pipe 70a. The third
dispensing pipe 93 may also be in fluid communication with the
drain pipe 95, which may be connected to a municipal sewer system
or a septic sewer system.
[0056] The dispensing subsystem 90 may be configured differently
than shown and still provide for the effective handling and removal
of excess grey water. Additionally, the grey water system 7 may be
configured to repurpose the grey water. For example, the grey water
system 7 may advantageously be configured so that the movement of
the grey water through the system helps remove debris (e.g.,
sludge, sediment, etc.) from the captured grey water in the tank.
The overflow of the tank may act as a skimming device as grey water
is moved through the tank to help remove any debris. As another
example, the excess grey water can be directed into the trap to
help with drain line carry. This arrangement may help alleviate
flow problems, which can be problematic in conventional low flow
toilets, such as by supplying additional water that would not
otherwise be available to the waste line, which may advantageously
provide a more reliable unit that is less susceptible to clogging
or plugging in the waste line (e.g., drain pipe 95).
[0057] The grey water system 7 may be installed within the
infrastructure of the dwelling, such as for new builds, or may be
retrofitted into the structures of existing dwellings. For example,
the grey water system 7 may be installed within a wall 80 (or
walls) of the infrastructure of the dwelling. As shown in FIG. 4,
the storage device 72 of the grey water system 7 is installed
between two studs 81 of a frame 82 of the wall 80. The pipes of the
grey water system 7 may be routed within or behind the walls to
improve the appearance of the washroom by hiding the plumbing.
[0058] FIG. 5 illustrates an exemplary embodiment of the toilet 1
having the passage 6, which is configured to carry the waste and
fluid from the bowl 31 to the drain pipe 95. The passage 6 may be
configured having an irregular shape (e.g., U-shape, S-shape,
etc.), including a generally tubular cross-section (e.g., circular,
oval, etc.). As shown in FIG. 5, the passage 6 includes a first end
61 (e.g., an entrance), a second end 62 (e.g., an exit), and an
inlet opening 63 provided between the first end 61 and the second
end 62. The first end 61 is in fluid communication with the exit or
outlet 35 of the bowl 31. The second end 62 is in fluid
communication with the drain pipe 95 to discharge the waste and
fluid from the toilet 1. The inlet opening 63 is configured to
introduce the grey water into the passage 6 from the storage device
72.
[0059] The passage 6 may extend from the first end 61 in a
generally rearward direction forming a first portion 60a (e.g., an
up-leg) of the passage 6. The passage 6 may have a second curved
portion 60b having an inverted U-shape. As shown in FIG. 6, an
upper section of the inverted U-shaped second curved portion 60b is
disposed at a height that is higher than the first portion 60a of
the passage 6 and a lower portion of the bowl 31 (e.g., a sump) in
order for a volume of fresh water to remain in the bowl 31
following a flush cycle. Thus, the bottom surface of the upper
section of the second portion 60b of the passage 6 may be at a
height that determines a water level (e.g., of the fresh water) in
the bowl after completion of a flush cycle, as shown in FIG. 6. In
other words, the second portion 60b of the passage 6 may act as a
weir (e.g., dam) to capture a volume of fresh water in the bottom
of the bowl 31. The passage 6 may have a generally vertical third
portion 60c (e.g., a down-leg) that extends from the second portion
60b downwardly toward the second end 62. The passage 6 may include
a fourth portion 60d that extends generally in a forward horizontal
direction from the third portion 60c.
[0060] According to the exemplary embodiment shown in FIG. 5, the
inlet opening 63 is located in a rearward portion of the curved
second portion 60b, which may advantageously allow the grey water
to be introduced into the passage 6 with gravity acting to move the
grey water down through the third portion 60c toward the second end
62 of the passage 6. This arrangement may advantageously influence
(e.g., induce) the siphoning effect of the toilet 1 during a flush
cycle.
[0061] The inlet opening 63 may be provided at a lower rearward
section of the second curved portion to advantageously prohibit the
grey water from back-flowing into first portion 60a of the passage
6. For example, the inlet opening 63 is provided at a location that
is level or below the upper peak of the bottom surface of the
second portion 60b, such as near the transition between the second
curved portion 60b and the third portion 60c. This arrangement may
advantageously comply with government regulations related to the
water (e.g., purity) in the bowl by prohibiting the grey water from
back-flowing into first portion 60a of the passage 6.
[0062] According to another exemplary embodiment, the inlet opening
63 is provided at a location in the third section of the passage 6.
According to yet another exemplary embodiment, the inlet opening 63
is positioned as high as possible to maximize the siphon in the
third portion 60c. This arrangement may advantageously minimize the
amount of air within the passage 6, such as between the inlet
opening 63 and the residing water in the bowl 31 and first portion
60a of the passage 6. The passage 6 may seal (e.g., the valve 74
may be closed), for example, once the third portion 60c is primed
with water, to induce a siphon or siphoning in the passage 6.
[0063] FIGS. 6-9 illustrate an exemplary embodiment of a five step
flush cycle of a grey water toilet, such as the toilet 1. In other
words, FIGS. 6-9 show a method of flushing the toilet that involves
five steps or processes. As shown in FIG. 6, prior to the flush
cycle, a volume V1 of fresh water is provided in the bottom of the
bowl 31 (remaining following the previous flush cycle), and both of
the valves 24, 74 are closed. Upon the user activating the flush
cycle (e.g., by depressing a trip lever, pushing a button, etc.),
the first step involves opening the valve 74 (e.g., a first valve)
to introduce a supply of grey water into the passage 6 to prime a
siphon. The second step involves opening a second valve 24 to
introduce a supply of fresh water into the bowl 31 from the tank 2,
the bowl 31 having an outlet 35 that is in fluid communication with
an inlet (e.g., the first end 61) of the passage 6. The third step
involves closing the first valve 74 to shut off the supply of grey
water. The fourth step involves evacuating the contents of the bowl
31 through an outlet (e.g., the second end 62) of the passage 6 by
way of a siphoning action. The fifth step involves closing the
second valve 24 to shut off the supply of fresh water and stop the
siphoning action.
[0064] As shown in FIG. 6, the toilet 1 prior to activation of a
flush cycle includes an initial volume V1 of fresh water based on
the water level of the toilet. The initial volume of fresh water
may be provided in the lower portion of the bowl and at least a
portion of the first portion 60a of the passage 6. The first step
may be initiated by activating the actuation device, such as the
actuator 22 shown in FIG. 1. For example, rotation of the actuator
22 by a first rotation (e.g., a first angle) may first initiate the
opening of the valve 74 to allow grey water to flow into the
passage 6. As shown in FIG. 7, once the valve 74 is opened, a
volume V2 of the grey water enters the passage 6 and may flow
through the third section 60c that extends downwardly toward the
second end 62. It is noted that the cross-hatch corresponding to
the volume V2 shown in FIGS. 7 and 8 represents the grey water. The
grey water may be introduced prior to the introduction of the fresh
water in order to prime the siphon of the toilet 1. In other words,
by introducing the grey water into the passage 6 for a time period
before fresh water in introduced into the bowl 31, the grey water
acts to affect the siphoning of the flush cycle of the toilet
1.
[0065] The second step may also be initiated by activating the
actuation device, such as the actuator 22. For example, rotation of
the actuator 22 by a second rotation (e.g., a second angle) may
initiate the opening of the valve 24 to allow fresh water to move
from the tank 2 to the bowl 31. Also, for example, a time delay
from the initial actuation may be used to trigger the opening of
the valve 24. The top member 33 of the pedestal 3 may include an
inlet 34 (e.g., an entrance) that may be aligned with an outlet 25
(e.g., exit) of the tank 2, such as when the tank 2 is coupled to
(or resting above) the pedestal 3, wherein water (e.g., fresh
water) is selectively transferred (e.g., conducted) from the tank 2
to the bowl 31 by the valve 24. Thus, the valve 24 controls the
flow of fresh water from the tank 2 to the pedestal 3 (e.g., the
bowl 31) for toilet 1. The toilet 1 may also include a gasket or
seal (not shown) that is provided between the tank 2 and the
pedestal 3 to prohibit leaking therebetween. For example, a
resilient gasket may be provided between the outlet 25 of the tank
2 and the inlet 34 of the pedestal 3 to prohibit leaking between
the tank and the pedestal. The tank 2 may also include a float
device (not shown) or any other suitable device (e.g., canister)
that controls the valve 24, such as by controlling the timing
(e.g., opening) of the valve 24 to meter the flow therethrough.
[0066] The valve 24 may be configured to be opened after a time
delay from when the valve 74 is opened. For example, the actuator
22 may open the valve 24 (e.g., first valve) after a time delay
from when the actuator 22 opened the valve 74 (e.g., second valve).
According to an exemplary embodiment, the time delay is
approximately one to three seconds. Thus, for this example, the
valve 74 may be opened for a time of approximately one to three
seconds before the valve 24 is opened, allowing grey water to flow
into the passage 6 for one to three seconds before the fresh water
begins to flow into the bowl 31 from the tank 2. It is noted that
the valves (e.g., the valve 24 and the valve 74) may be activated
by the same actuation device as described above, or by different
actuation devices. For example, the user may activate a first
actuation device (e.g., a push button) which opens the valve 74,
where a second actuation device, which may be actuated by the valve
74 or based on the timing of the opening of the valve 74, opens the
valve 24. It is further noted that the valves may be activated
having different timing relative to each other.
[0067] The third step involves closing the valve 74 (e.g., first
valve) to shut off the supply of grey water flowing into the
passage 6 from the storage device 72. The valve 74 may be
configured to be closed mechanically, electronically, or a
combination thereof. The valve 74 may be closed prior to the
siphoning action to allow the fresh water flowing through the valve
24 to increase the pressure in the passage 6 to induce the siphon
and/or to prevent the contents of the bowl 31 and fluid to backflow
through the inlet opening 63 and into the third pipe 73c and/or the
storage device 72. As shown in FIG. 8, after the valve 74 closes,
the fresh water continues to enter the bowl 31 since the valve 24
remains open. Thus, a volume V3 of the fresh water enters the bowl
31 to induce and/or continue the siphon and to move the volume V2
of the grey water out of the second end 62 of the passage 6. As an
example, the valve 74 may be a line pressure actuated pilot valve
configured to actuate a main valve, which may be driven by a
pressure drop when the fresh water line (e.g., through the valve
24) is actuated.
[0068] The fourth step involves using a generated siphon to
evacuate the contents of the bowl 31 through an outlet (e.g., the
second end 62) of the passage 6. The siphon is induced by the flow
of fresh water into the bowl 31 combined with the flow of grey
water into the passage 6. For example, the siphon may be induced
primarily by the flow of the grey water and secondarily by the flow
of the fresh water. The siphon may be induced when the passage 6
fills with water (e.g., fresh water and grey water). Thus, it may
be advantageous to introduce the grey water into the passage 6 to
assist the fresh water in inducing the siphon of the flush cycle.
The use of grey water advantageously reduces the amount (e.g.,
volume) of fresh water that is used during a flush cycle. The grey
water may be introduced prior to the introduction of the fresh
water in order to prime the siphon of the toilet 1, where the
siphoning moves the contents of the bowl 31 through the passage 6
and out of the toilet through the second end 62 of the passage to
the drain pipe 95. During the siphoning, the volume V2 of the grey
water is flushed from the passage 6.
[0069] The fifth step involves closing the second valve 24 to shut
off the supply of fresh water. Fresh water continues to fill the
bowl 31 after the siphoning action in order to fill the bottom of
the bowl 31 and the reservoir (e.g., at least a portion of the
passage 6) with a volume V1 of the fresh water. As shown in FIG. 9,
once the volume V1 of the fresh water has been introduced into the
bowl 31, the valve 24 is configured to close to shut off the supply
of fresh water. The time delay between closing the valve 24 may be
tailored depending on the toilet 1, such as to tailor the volume of
water that enters the bowl 31.
[0070] The grey water toilets disclosed herein (e.g., toilets 1,
101, 201, 301, 401) may utilize a different method of flushing the
toilet. For example, another exemplary method of flushing the
toilet involves five steps or processes. The first step of the
method involves opening a first valve (e.g., valve 24) to introduce
a supply of fresh water into a bowl (e.g., bowl 31), such as, for
example from a tank (e.g., tank 2), where the bowl includes an
outlet that is in fluid communication with an inlet of a passage
(e.g., passage 6). The second step of the method involves opening a
second valve (e.g., valve 74) to introduce a supply of grey water
into the passage (e.g., passage 6) to prime a siphon therein. The
grey water may be introduced into an inlet opening of the passage.
The third step of the method involves closing the second valve to
shut off the supply of grey water. The second valve may be closed
using a mechanical device, an electronic device, or a combination
thereof. The fourth step of the method involves evacuating the
contents of the bowl through an outlet of the passage by way of the
siphon generated by the introduction of the supply of grey water
and the introduction of the supply of fresh water. The fifth step
of the method involves closing the first valve to shut off the
supply of fresh water.
[0071] The toilets disclosed herein are configured to improve
performance of the flush cycle by introducing the supply of water
(e.g., grey water, fresh water) into the passage. For example, by
introducing the supply of water on the waste side of the passage, a
vacuum may be established within the passage. The vacuum may induce
a siphon to evacuate the contents of the bowl, such as with using a
reduced amount of water (in total and/or fresh water). As the
supply of water (e.g., a volume of grey water) is introduced or
delivered into the passage, such as the vertical section of the
passage, the supply of water fills the void and falls (e.g.,
through gravity) through the passage, which may establish a vacuum
or low pressure. The low pressure or vacuum pulls on the water (and
contents) in the sump of the bowl pulling it through the passage
(e.g., up and over the weir of the passage). Accordingly, by
inducing a vacuum, the supply of water (e.g., a volume of grey
water) introduced into the passage "primes" the passage and allows
the flush cycle to use less total water (e.g., the volume of water
introduced into the bowl and the volume of water introduced into
the passage) compared to a toilet that introduces water only into
the bowl, since the latter toilet requires additional water to push
the contents of the bowl up and over the weir. By utilizing grey
water for the volume of water introduced into the passage, the
toilet further reduces the amount of fresh water used per flush
cycle.
[0072] FIGS. 10-13 illustrate another exemplary embodiment of a
toilet 101 having a grey water system 107 that is configured to
introduce captured grey water into the toilet 101 during a flush
cycle. The toilet 101 may be configured similar to, the same as, or
different than the other toilets disclosed herein. The grey water
system 107 may be configured to introduce the grey water into the
passage 106 (e.g., the trapway) of the toilet 101 during a flush
cycle.
[0073] The grey water system 107 includes a collection device
(e.g., the collection device 170 shown in FIG. 13) that is
configured to capture shower water from the bath/shower, rain
water, or any other suitable form of grey water, and a storage
device (e.g., the storage device 172 shown in FIG. 11) that is
configured to store the captured grey water. The grey water system
107 may also include a pump 171 (shown in FIG. 12) or any other
suitable device that is configured to move the recycled shower
water (e.g., the grey water) from the collection device 170 to the
storage device 172.
[0074] As shown in FIGS. 10 and 11, the storage device 172 is
configured as a tank or container that is configured to hold a
specified volume of grey water therein. The size (e.g., volume) of
the storage device 172 may be tailored, such as, for the
anticipated use of the toilet. As shown in FIG. 11, the storage
device 172 may be disposed on the exterior surface of a wall, such
as the wall provided behind and/or above the toilet 101. It is
noted that the storage device 172 may be located anywhere in the
washroom, and does not have to be provided behind the toilet 101,
since the piping may transfer the grey water to the toilet 101.
[0075] Also shown in FIG. 10, the storage device 172 may be
constructed within a cabinet, which may include a mirrored surface
176a, such as provided on a movable (e.g., pivoting) door. For
example, the door having the mirrored surface may be disposed on
the outside of the storage device 172 to conceal the storage device
172 and provide the added utility of the mirror. The storage device
172 may include a frame 176b, such as to surround and conceal the
storage device 172. The cabinet (e.g., the frame 176b) may
optionally include a shelf 176c (or a plurality of shelves)
configured to provide storage space.
[0076] As shown in FIG. 11, the storage device 172 includes an
inlet 172a and an outlet 172b. The inlet 172a is configured to
receive the grey water from the collection device 170, such as
through a conveyor (e.g., a pipe, a plurality of pipes). As shown
in FIG. 12, a first pipe 173a transfers the grey water from the
collection device 170 to a pump 171, and a second pipe 173b
transfers the grey water from the pump 171 to the storage device
172. The outlet 172b is configured to introduce the stored grey
water to the toilet 101, such as to a passage 106 of the toilet
101. A third pipe 173c transfers the grey water from the storage
device 172 through the outlet 172b to the toilet 101.
[0077] FIGS. 14-17 illustrate another exemplary embodiment of a
toilet 201 having a grey water system 207 that is configured to
introduce captured grey water into the toilet 201 during a flush
cycle. The toilet 201 includes a tank 202, a pedestal 203
configured to support the tank 202, a seat assembly 204, and the
grey water system 207. The pedestal 203 may be configured similar
to, generally the same as, or different than the pedestal 3. For
example, the pedestal 203 may include a bowl 231 and a passage 206
fluidly connecting the bowl 231 to a drain pipe or other suitable
connection.
[0078] As shown in FIG. 16, the tank 202 includes a first
compartment 225 (e.g., container, vessel, receptacle, cavity, etc.)
and a second compartment 226 that is fluidly separated from the
first compartment 225. The first compartment 225 is configured to
hold a volume of fresh water, and the second compartment 226 is
configured to hold a volume of grey water. In other words, the tank
202 is configured as a dual compartment tank. The tank 202 may be
divided so that the first compartment 225 and the second
compartment 226 are disposed in a side-by-side configuration, in a
top-to-bottom configuration, a front-to-back configuration, or
having any suitable configuration. The size (e.g., volume) of the
first compartment 225 may be the same as or may be different than
the size of the second compartment 226.
[0079] As shown in FIG. 17, the tank 202 may also include a first
inlet 227a and a second inlet 227b. The first inlet 227a is fluidly
connected to a supply of fresh water to allow fresh water to enter
the first compartment 225, such as through a water line. The second
inlet 227b is fluidly connected to a supply of grey water to allow
grey water to enter the second compartment 226, such as from a
storage device. The grey water system 207 may include a valve that
is configured to control the flow of the fresh water into the first
inlet 227a and/or of the grey water into the second inlet 227b.
[0080] The tank 202 may also include a first outlet 228a and a
second outlet 228b. The first outlet 228a is provided in the first
compartment 225 to allow the fresh water to exit the first
compartment 225. The grey water system 207 may include a first
valve 224a that is configured to regulate or control the flow of
the fresh water from the first compartment 225 through the first
outlet 228a. For example, the first valve 224a may be provided in
the tank 202. The second outlet 228b is provided in the second
compartment 226 to allow the grey water to exit the second
compartment 226. The grey water system 207 may include a second
valve 224b that is configured to regulate or control the flow of
the grey water from the second compartment 226 through the second
outlet 228b. For example, the second valve 224b may be provided in
the tank 202.
[0081] The grey water system 207 may optionally include a tube or
other suitable device, which may extend between one of the outlets
(e.g., first outlet 228a, second outlet 228b) and its respective
inlet in the pedestal. For example, a tube 229a may extend between
the first outlet 228a of the first compartment 225 and an inlet of
the toilet 201 (e.g., the pedestal) to supply the fresh water from
the tank 202 to the pedestal. Also, for example, a tube 229b may
extend between the second outlet 228b of the second compartment 226
to the pedestal, such as an inlet opening 263 in the passage 206.
The first and second valves 224a, 224b may be provided within the
tubes 229a, 229b, may be provided in the tank 202, or may be
coupled to the pedestal.
[0082] The toilet 201 may include an actuator, such as a handle or
button provided on the tank 202, where the actuator may control the
first valve 224a and/or the second valve 224b. For example, the
actuator may be configured to be activated by a user, where upon
activation, the actuator may first open the second valve 224b to
allow a volume of the grey water to enter the toilet 201, such as
into the passage 206, then may open the first valve 224a after a
time delay to allow a volume of the fresh water to enter the bowl
231.
[0083] As shown in FIG. 17, the grey water is stored in a storage
device in the form of a large scale tank 272. The tank 272 may be
provided in the building or dwelling in which the toilet 201 is
located (e.g., in an attic, basement, crawl space, etc.), or the
tank 272 may be provided external to or remote from the building or
dwelling in which the toilet 201 is located. According to another
exemplary embodiment, the grey water is provided by a municipality
or decentralized water treatment facility (e.g., a city) source,
which collects and distributes the grey water. The large scale tank
272 may be configured to supply grey water to multiple toilets
configured to utilize grey water during a flush cycle. For example,
the large scale tank 272 may supply grey water to a single family
home having multiple toilets, a multi-family home (e.g.,
condominium, apartment, etc.) having multiple toilets, a commercial
building (e.g., hotel, office building, etc.) having multiple
toilets, an industrial building (e.g., a factory, etc.), or any
suitable facility or structure having multiple toilets configured
to utilize grey water. The large scale tank 272 may also supply
multiple facilities or structures with grey water. Thus, the large
scale tank 272 may be configured to supply grey water to multiple
toilets simultaneously. Each facility may be configured to include
a grey water collection system to capture grey water.
[0084] FIGS. 18-20 illustrate another exemplary embodiment of a
grey water toilet assembly including a toilet 301 and a grey water
system 307 that is configured to introduce captured grey water into
the toilet 301 during a flush cycle. The toilet 301 includes a tank
302, a pedestal 303 configured to support the tank 302, and the
grey water system 307. The pedestal 303 may be configured similar
to, generally the same as, or different than the pedestals
disclosed herein. For example, the pedestal 303 may include a bowl
331 and a passage 306 fluidly connecting the bowl 331 to a drain
pipe or other suitable connection.
[0085] As shown, the tank 302 is configured as a dual compartment
tank, having a first compartment 325 configured to hold a volume of
fresh water and a second compartment 326 configured to hold a
volume of grey water. The first and second compartments 325, 326
are fluidly separated to prohibit commingling of the fresh and grey
waters.
[0086] The tank 302 may include an inlet, such as to allow a fluid
(e.g., fresh water, grey water) to be introduced into the tank 302,
and an outlet, such as to allow the fluid to exit the tank 302.
According to an exemplary embodiment, the tank 302 includes a first
inlet (not shown), a second inlet 327, a first outlet 328a, and a
second outlet 328b. The first inlet (not shown) is configured to
allow the fresh water to enter the first compartment 325. As shown
in FIG. 20, the second inlet 327 is configured to allow the grey
water to enter the second compartment 326, such as from a storage
device of the grey water system 307. The first outlet 328a is
configured to allow the fresh water to exit the first compartment
325. The second outlet 328b is configured to allow the grey water
to exit the second compartment 326.
[0087] The grey water system 307 may include a valve configured to
control the flow of fluid through an inlet or outlet of the tank
302. As shown in FIG. 20, the system includes a first inlet valve
329a and a second inlet valve 329b. The first inlet valve 329a is
fluidly connected to the first inlet of the first compartment 325
to control the flow of the fresh water into the first compartment
325. The second inlet valve 329b is fluidly connected to the second
inlet 327 of the second compartment 326 to control the flow the
grey water into the second compartment 326.
[0088] As shown in FIGS. 18-20, the grey water system 307 also
includes a first outlet valve 324a and a second outlet valve 324b.
The first outlet valve 324a is configured to control the flow of
the fresh water from the first compartment 325 to the bowl 331,
such as through a rim channel or jet of the toilet 301. The second
outlet valve 324b is configured to control the flow of the grey
water from the second compartment 326 to the passage 306.
[0089] The grey water system 307 may optionally include one or more
than one tube, pipe, or other suitable device to transfer the water
(e.g., fresh water, grey water) to and/or from the tank 302. For
example, the system may include a pair of inlet tubes, where one
inlet tube transfers fresh water to the first compartment 325, and
where the other tube transfers grey water to the second compartment
326. Also, for example, the system may include a pair of outlet
tubes, where one tube transfers fresh water from the first
compartment 325 to the bowl 331 of the toilet 301, and where the
other tube transfers grey water from the second compartment 326 to
the passage 306 of the toilet 301.
[0090] The grey water toilet system of FIGS. 18-20 may include a
method of flushing the toilet 301 that is similar to or the same as
the other methods disclosed herein, such as the five step methods.
Alternatively, the method of the flushing the toilet 301 may be
different. FIG. 18 illustrates a pre-flush condition of the toilet
301, where the bowl 331 includes a volume V1 of fresh water
therein, and both outlet valves 324a, 324b are in the closes
position. Further, the first compartment 325 of the tank 302
contains fresh water and the second compartment 326 of the tank 302
contains grey water. Upon actuation of a flush cycle, the second
outlet valve 324b opens and grey water is introduced into the
passage 306, as shown in FIG. 19. A volume V2 of grey water is
delivered to the passage 306. At a time before or after the opening
of the second outlet valve 324b, the first outlet valve 324a is
opened to allow a fresh water to be introduced into the bowl 331.
An amount of fresh water is introduced into the bowl 331 until a
volume V3 is reached. The supply of fresh water and grey water
induces a flush cycle of the contents of the bowl 331 through the
passage 306. The second outlet valve 324b may be closed prior to
the discharge of the contents of the bowl 331 through the passage
306. At a time before or after the closing of the second outlet
valve 324b, the first outlet valve 324a.
[0091] The tank 302 may be configured as a pressure vessel that may
assist in the flush cycle of the toilet 301. For example, the first
compartment 325 may be in the form a well (e.g., depression) in the
tank 302, where the fresh water may operate under the influence of
gravity to assist in the flush cycle. The second compartment 326
may be under pressure, which may be induced by the pressure of
being pumped from, for example, a municipality, which could be used
to regulate the flush cycle and timing, such as regulate the fresh
water flush and timing. Thus, the tank 302 may be configured as a
dual gravity and pressure operated tank. Alternatively, the tank
302 may rely on only gravity or only pressure to operate the
tank.
[0092] FIGS. 21-25 illustrate another exemplary embodiment of a
toilet 401 having a grey water system 407 that is configured to
introduce captured grey water into the toilet 401 during a flush
cycle. The toilet 401 includes a pedestal 403, a fresh water
assembly 402, a grey water system 407, and a housing 408 that is
configured to close off and conceal the pedestal 403, the fresh
water assembly 402, and the grey water system 407 to provide a
generally hexahedron shaped toilet 401 with improved
aesthetics.
[0093] The pedestal 403 may be configured similar to, generally the
same as, or different than the pedestal 3. For example, the
pedestal 403 may include a bowl 431 and a passage 406 fluidly
connecting the bowl 431 to a drain pipe or other suitable
connection. Additionally, the pedestal 403 includes an inlet
opening provided in the bowl 431, where the inlet opening is
configured to allow fresh water to be introduced into the bowl 431.
For example, the toilet 401 may have a jet for introducing a
pressurized flow of fresh water into the bowl 431 through the inlet
opening.
[0094] As shown in FIG. 23, the fresh water assembly 402 includes a
storage tank 428, where the storage tank 428 holds the fresh water
until a flush cycle is activated. Once a flush cycle is activated,
fresh water is delivered to the bowl 431 through an outlet 427. For
example, during a flush cycle, the jet may discharge the
pressurized flow of the fresh water from the storage tank 428 into
the bowl 431 through the inlet opening. The storage tank 428
includes an inlet 428a to receive the supply of fresh water
therethrough. The fresh water assembly 402 may also include a valve
for controlling the flow of the fresh water from the storage tank
428 to the bowl 431 and/or from a fresh water supply to the storage
tank 428.
[0095] As shown in FIGS. 24 and 25, the grey water system 407
includes a second storage tank 472 having an inlet 472a and an
outlet 472b. The inlet 472a receives the grey water from a source,
such as, for example, a collection device or a municipal supply.
The grey water is discharged from the second storage tank 472
through the outlet 472b to be delivered to the toilet 401, such as
to the passage 406. As shown, the grey water system 407 may include
piping or any other suitable device to transfer the grey water to
and/or from the second storage tank 472. For example, a first pipe
473a may deliver the grey water to the tank 472 through the inlet
472a from the source, and a second pipe 473b may deliver the grey
water to the passage 406 from the second storage tank 472.
[0096] The grey water system 407 may also include a valve that is
configured to control the flow of the grey water to and/or from the
second storage tank 472. For example, the tank 472 may include a
valve provided therein, where the valve controls the flow of the
grey water from the tank 472 to the passage 406. The valve may be
controlled by an actuator that triggers a flush cycle of the toilet
401, or any other suitable device.
[0097] As shown in FIGS. 21 and 22, the toilet 401 may also include
a lid 404 in the form of a covering member that is configured to
pivot about a hinge 440 attached to the housing 408. The lid 404
may pivot between a closed (e.g., down) position and an open (e.g.,
up) position, such that when in the closed position the lid 404
covers up the opening to the bowl 431 of the pedestal 403, and when
in the open position the lid 404 exposes (i.e., allows access to)
the opening to the bowl 431.
[0098] The toilets as disclosed herein are configured to include
grey water systems that introduce a volume of grey water into the
toilet, such as into the passage or trapway, to reduce the
consumption of fresh water per flush cycle of the toilet. The grey
water systems may also include collection devices that capture the
grey water and transfer the grey water to a holding tank until
utilized during a flush cycle of the toilet. The grey water may be
introduced into the toilet through the passage, such as a rearward
and upper portion of the passage (i.e., on the waste side of the
system) to prohibit the grey water from back-flowing into the
bottom of the bowl of the toilet. This arrangement may
advantageously meet regulations (e.g., government regulations)
without requiring any additional service, such as filters, tablets
(e.g., chlorine), etc., by the end user. This arrangement may also
be transparent to the end user, as the toilet may have the
appearance of functioning as a conventional toilet that uses only
fresh water, and would not require any additional maintenance
relative to conventional toilets, since the grey water is
introduced on the waste side of the system. The toilets using grey
water as disclosed herein may be installed into existing structures
with only a minimal amount of remodeling, as the systems are
minimally invasive to existing infrastructure. Further,
conventional toilets may be retrofitted to include a grey water
system. These and other advantages of the toilets having grey water
systems are apparent in view of the disclosed embodiments
herein.
[0099] As utilized herein, the terms "approximately," "about,"
"substantially", and similar terms are intended to have a broad
meaning in harmony with the common and accepted usage by those of
ordinary skill in the art to which the subject matter of this
disclosure pertains. It should be understood by those of skill in
the art who review this disclosure that these terms are intended to
allow a description of certain features described and claimed
without restricting the scope of these features to the precise
numerical ranges provided. Accordingly, these terms should be
interpreted as indicating that insubstantial or inconsequential
modifications or alterations of the subject matter described and
claimed are considered to be within the scope of the invention as
recited in the appended claims.
[0100] It should be noted that the term "exemplary" as used herein
to describe various embodiments is intended to indicate that such
embodiments are possible examples, representations, and/or
illustrations of possible embodiments (and such term is not
intended to connote that such embodiments are necessarily
extraordinary or superlative examples).
[0101] The terms "coupled," "connected," and the like as used
herein mean the joining of two members directly or indirectly to
one another. Such joining may be stationary (e.g., permanent) or
moveable (e.g., removable or releasable). Such joining may be
achieved with the two members or the two members and any additional
intermediate members being integrally formed as a single unitary
body with one another or with the two members or the two members
and any additional intermediate members being attached to one
another.
[0102] References herein to the positions of elements (e.g., "top,"
"bottom," "above," "below," etc.) are merely used to describe the
orientation of various elements in the FIGURES. It should be noted
that the orientation of various elements may differ according to
other exemplary embodiments, and that such variations are intended
to be encompassed by the present disclosure.
[0103] It is important to note that the construction and
arrangement of the toilets and grey water systems as shown in the
various exemplary embodiments are illustrative only. Although only
a few embodiments have been described in detail in this disclosure,
those skilled in the art who review this disclosure will readily
appreciate that many modifications are possible (e.g., variations
in sizes, dimensions, structures, shapes and proportions of the
various elements, values of parameters, mounting arrangements, use
of materials, colors, orientations, etc.) without materially
departing from the novel teachings and advantages of the subject
matter described herein. For example, elements shown as integrally
formed may be constructed of multiple parts or elements, the
position of elements may be reversed or otherwise varied, and the
nature or number of discrete elements or positions may be altered
or varied. The order or sequence of any process or method steps may
be varied or re-sequenced according to alternative embodiments.
[0104] Other substitutions, modifications, changes and omissions
may also be made in the design, operating conditions and
arrangement of the various exemplary embodiments without departing
from the scope of the present invention. For example, one element
disclosed in one embodiment may be used in any other embodiment
disclosed herein.
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