U.S. patent application number 16/622629 was filed with the patent office on 2021-05-13 for sanitary insert part and outlet assembly, and use of a discharge opening which leads to a jet aeration device.
This patent application is currently assigned to Neoperl GmbH. The applicant listed for this patent is Neoperl GmbH. Invention is credited to Gerhard BLUM, Alexander STEIN.
Application Number | 20210140157 16/622629 |
Document ID | / |
Family ID | 1000005403415 |
Filed Date | 2021-05-13 |
![](/patent/app/20210140157/US20210140157A1-20210513\US20210140157A1-2021051)
United States Patent
Application |
20210140157 |
Kind Code |
A1 |
STEIN; Alexander ; et
al. |
May 13, 2021 |
SANITARY INSERT PART AND OUTLET ASSEMBLY, AND USE OF A DISCHARGE
OPENING WHICH LEADS TO A JET AERATION DEVICE
Abstract
A sanitary insert part (1), with an inlet side (2) and an outlet
side (3), wherein a securing element (4) is formed between the
inlet side (2) and the outlet side (3), wherein the securing
element (4) is designed to be detachably secured to a counter
securing element (6) on a water outlet (5) of a sanitary fitting,
wherein a seal element (7) is formed between the securing element
(4) and the inlet side (2), creating an at least partial seal; and
with a jet aeration device (8) which has an aeration access point
(9) that is open towards the outlet side (3) and a discharge
opening (10) connecting an outer side of the sanitary insert part
(1) to a ventilation chamber in the jet ventilation device (8) and
formed between the seal element (7) and the securing element.
Inventors: |
STEIN; Alexander; (Ihringen,
DE) ; BLUM; Gerhard; (Gutach, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Neoperl GmbH |
Mullheim |
|
DE |
|
|
Assignee: |
Neoperl GmbH
Mullheim
DE
|
Family ID: |
1000005403415 |
Appl. No.: |
16/622629 |
Filed: |
July 20, 2018 |
PCT Filed: |
July 20, 2018 |
PCT NO: |
PCT/EP2018/069778 |
371 Date: |
December 13, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
E03C 1/084 20130101 |
International
Class: |
E03C 1/084 20060101
E03C001/084 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 6, 2017 |
DE |
20 2017 105 386.5 |
Claims
1. A sanitary insert part (1), comprising: an inlet side (2); an
outlet side (3); a securing means (4) formed between the inlet side
(2) and the outlet side (3), the securing means (4) is configured
to be detachably secured to a counter securing means (6) on a water
outlet (5) of a sanitary fitting; a seal element (7) formed between
the securing means (4) and the inlet side (2), creating an at least
partial seal; and a jet aeration device (8) which has an aeration
access point (9) that is open towards the outlet side (3) and
includes by at least one discharge opening (10) connecting an outer
side of the sanitary insert part (1) to an aeration chamber in the
jet aeration device (8) and being formed between the seal element
(7) and the securing means (4).
2. The sanitary insert part (1) as claimed in claim 1, wherein a
main flow path is formed between the inlet side (2) and the outlet
side (3), and the jet aeration device (8) forms a flow barrier (11)
in the main flow path.
3. The sanitary insert part (1) as claimed in claim 2, wherein the
use of a discharge opening (10) is located in a flow direction
behind the flow barrier (11) in the main flow path.
4. The sanitary insert part (1) as claimed in claim 1 wherein at
least one of the securing means (4) or the discharge opening (10)
are part of a base structure (12).
5. The sanitary insert part (1) as claimed in claim 1, further
comprising a seal element (7) that is part of a base structure (12)
and has an annular, circumferential form.
6. The sanitary insert part (1) as claimed in claim 1, further
comprising a seal element (7) that forms at least one of a radial
or axial seal.
7. The sanitary insert part (1) as claimed in claim 1, wherein the
jet aeration device (8) forms at least a part of a base structure
(12).
8. The sanitary insert part (1) as claimed in claim 7, wherein the
base structure (12) is formed as a single unit or as multiple
components.
9. The sanitary insert part (1) as claimed in claim 7, wherein the
base structure is comprised of plastic.
10. The sanitary insert part (1) as claimed in claim 7, wherein the
base structure comprises an upper part (13) and a lower part (14),
and a seal element (7) is provided on the upper part (13) of the
base structure (12) and the securing means (4) is provided on the
lower part (14) of the base structure (12), and a snap-in
connection connects the upper part (13) with the lower part
(14).
11. The sanitary insert part (1) as claimed in claim 1, wherein the
at least one discharge opening (10) located at a distance from the
securing means (4).
12. The sanitary insert part (1) as claimed in claim 1, further
comprising a collection chamber (15) formed between the securing
means (4) and the outlet side (3), through which excess water
escaping through a leachate path (20) between the securing means
(4) and the counter securing means (6) is collected.
13. The sanitary insert part (1) as in claim 12, further comprising
a lip seal (17) on the outlet side (3), that seals the collection
chamber (15) in the water outlet (5) to the outside.
14. The sanitary insert part (1) as claimed in claim 1, wherein the
securing means (4) comprises a thread connection, and the counter
securing means is adapted to be a counter thread connection that is
adapted to allow the insert part to be attached to a water outlet
(5) on a sanitary fitting.
15. The sanitary insert part (1) as claimed in claim 1, further
comprising a tool attachment (18) formed in the outlet side (3)
that is adapted to assist in at least one of an attachment or
detachment process.
16. An outlet assembly, comprising an insert part (1) as claimed in
claim 1 that is inserted into a water outlet (5) of a sanitary
fitting, and the seal element (7) in the sanitary insert part (1)
provides an at least partial seal of an aperture (19) between the
sanitary insert part (1) and the water outlet (5).
17. The outlet assembly as claimed in claim 16, wherein a flow
resistance between the discharge opening (10) and the outlet side
(3) is lower than the flower resistance in a leachate path (20)
that extends from the securing means (4) to the counter securing
means (6).
18. A method of minimizing a loss of water between sanitary insert
part (1) and a water outlet (5) receiving the sanitary insert part
(1), the method comprising: providing the sanitary installation
part according to claim 1; in which the discharge opening (10) is
located in a leachate path (20) of excess water, before the
securing means (4) of the sanitary insert part (1) and after the
seal element (7) of the sanitary insert part (1) in the direction
of the flow of water; and drawing the excess water into the
aeration chamber for discharge with the flow of water.
19. The method of claim 18, wherein the seal element (7) reduces
pressure in the leachate path (20) to ensure a flow resistance
produced by the seal element (7) is greater than a flow resistance
in a section of the main flow path running parallel to the seal
element within the sanitary insert part (1).
20. The sanitary insert part as claimed in claim 10, wherein the
upper part (13) has a greater elastic deformability than the lower
part (14).
21. The sanitary insert part as claimed in claim 12, further
comprising an overflow opening (16) within the collection chamber
(15) that leads into the aeration access point (9).
Description
FIELD OF THE INVENTION
[0001] The invention relates to a sanitary insert part with an
inlet side and an outlet side, wherein a securing means is formed
between the inlet side and the outlet side, wherein the securing
means is designed to be detachably secured to a counter securing
means on a water outlet of a sanitary fitting, wherein a seal
element is formed between the securing means and the inlet side,
creating an at least partial seal; and with a jet aeration device
which has an aeration access point that is open towards the outlet
side.
[0002] The invention further concerns an outlet assembly,
comprising an insert part as described above, which is inserted
into the water outlet of a sanitary fitting, wherein a seal element
at least partially seals an aperture between the insert part and
the water outlet.
[0003] The invention finally concerns the use of a discharge
opening connected to a jet aeration device. The opening allows for
a reduction in leachate escaping between the insert and a water
outlet connected to it.
BACKGROUND
[0004] A sanitary insert of this kind, an outlet assembly of this
kind, and their corresponding use as described above, have already
been recorded, for example under EP3153633 A1.
SUMMARY
[0005] The invention instead concerns the development of a
simplified solution that allows for the creation of an alternative
method for sealing the aperture between a sanitary insert part and
the water outlet of a sanitary fitting to which it is
connected.
[0006] In addressing the above issue, one or more characteristics
set out below have been devised for use in a sanitary insert part.
In particular, to resolve the above issue affecting sanitary insert
parts, the invention proposes that at least one discharge
opening--approaching the jet aeration device from the
outside--should be formed between the seal element and the securing
means. Water escaping through the seal can thus be easily absorbed
and returned to the main flow path, without requiring the attention
of the user. This means that water leakage through the securing
means on the outlet side can be significantly reduced or even
avoided altogether. In achieving this effect, it is not necessary
for the seal element to be developed or attached in such a way that
it provides an absolute seat Instead, a certain amount of leakage
is acceptable, as it can then be reabsorbed through the opening
described above. This in turn simplifies assembly of the insert
considerably, as it does not require assembly using significant
force.
[0007] The seal element can achieve a complete seal using this
method. However, its effect is already achieved if the seal element
results in only a partial seal, as this generates a pressure
difference across the seal element. This pressure difference can,
for example, be set so that a substantial part of the water
escaping through the seal element--or even all of the water
escaping--is channelled into the discharge opening.
[0008] The securing means can be installed as a releasable
connection with a counter securing means. For example, the securing
means can be adapted for a screw connection, plug connection,
swivel connection and/or a snap connection, as well as a
combination of one or more of these connection types, either with
connections of the same type or connections of other types.
[0009] When configuring the invention, there is the option of
ensuring that a main flow path is formed between the inlet side and
the outlet side. When combined with the insert, this enables
leachate to be returned to the main flow via the discharge opening.
As such, lateral leakage from the fitting can be avoided.
[0010] This in turn means that the jet aeration device acts as a
flow barrier in the main flow path. The flow barrier can
subsequently cause a drop in pressure relative to the inlet side,
enabling any leakage to be returned to the main flow path.
[0011] When configuring the invention, there is the option of
ensuring that the discharge opening leading into the main flow path
is placed behind the flow barrier in the direction of flow. This
helps to avoid the need for the leachate to build up significant
pressure before the flow is able to reach the main flow path. This
method could be used to relieve pressure on seals located further
downstream of the discharge opening--with one such seal being
formed by the securing means, for example.
[0012] It is particularly effective if several discharge
openings--preferably of similar designs--are arranged around an
outer circumference or if the discharge opening itself is circular
in shape. In essence, this ensures discharge openings are available
to service the entire outer circumference and that any leaks can be
absorbed from all sides.
[0013] When configuring the invention, there is the option of
attaching the securing means to a base structure. This results in
the possibility of achieving a single stop function for the water
outlet. This may be beneficial if, for example, the securing means
is a thread connection or twist-and-lock joint.
[0014] Alternatively (or additionally), the invention can be
configured so that the discharge opening is attached to a base
structure. Here, the discharge opening (one minimum) could be
formed, for example, using injection moulding technology.
[0015] It is particularly effective if a circular collection
pocket--with the discharge opening branching off--is attached to
the base structure. This allows for leakage to be collected along
the entire outer circumference and led away to at least one
discharge opening.
[0016] When configuring the invention, there is the option of
attaching the seal element to a base structure, such as that
mentioned in the examples above. This makes a simpler formation
process possible, as other assembly steps may then be omitted.
[0017] When configuring the invention, there is the option of using
a seal element that is circular in shape. This allows the seal
element to seal an annular gap between the insert part and the
water outlet in a straightforward way.
[0018] When configuring the invention, there is the option of using
a seal element with a radial seal design. Due to radial material
displacement, a radial seal has the advantage of generating contact
pressure and therefore only a comparatively low level of force
would be required when inserting the insert part into the water
outlet.
[0019] When configuring the invention, there is the option of using
an axial seal element. Therefore a radial construction dimension is
not very durable.
[0020] It is particularly effective, however, if the seal element
uses a design that features a radial and an axial seal. The seal
element can therefore be used for a number of water outlets with
different designs in which it seals either radially or axially or
both radially and axially.
[0021] When configuring the invention, there is the option of
attaching the jet aeration device to a base structure, such as that
mentioned in the examples above. This allows for the formation of a
compact insert part.
[0022] When configuring the invention, there is the option of
designing the base structure as a single unit. This allows for a
reduction in the effort required during the protection and/or
assembly phases.
[0023] Alternatively, the base structure can be designed as several
composite parts. The advantage here is that different materials can
be used for each part. Another advantage is that more complex
shapes can be achieved for use in the base structure.
[0024] When configuring the invention, there is the option of
producing the base structure using plastic. This allows for the
base structure to be produced at low cost, for example as a part
created through injection-moulding technology. As a material,
plastic may also work well as it can serve to avoid or reduce lime
scale deposits.
[0025] When configuring the invention, there is the option of
attaching the seal element to an upper part of the base structure
and the securing means to a lower part of the case structure.
[0026] This allows for the possibility of connecting the upper part
and lower part using a snap-fit connection. This in turn makes the
base structure easy to assemble. Alternatively (or additionally),
this can allow for the upper part to have a greater deformability
than the lower part. In such cases, the securing means can be
attached more securely than the seal element. The higher
deformability of the seal element, meanwhile, can be used to
improve the seal achieved. The greater deformability could be
achieved through plastic or elastic, for example.
[0027] When configuring the invention, there is the option of
positioning the discharge opening (one minimum) at a distance away
from the securing means. The advantage of placing the discharge
opening at a sufficient distance is that leakage water cannot
overflow into the securing means.
[0028] When configuring the invention, there is the option of
placing a collection chamber between the securing means and the
outlet side, allowing for water seeping through the thread
connection to be collected. This means that any remaining leachate
which passes through the securing means can be collected, avoiding
unwanted leakage at this point in the process.
[0029] It is preferable for the collection chamber to be designed
as a ring-shaped circumferential groove. This allows for unwanted
water leakage along the entire outer circumference of the insert to
be reduced or avoided altogether.
[0030] Here, there is the option of designing the collection
chamber with an overflow opening that leads into the aeration
access point. This allows the contents of the collection chamber to
be easily returned to the main flow path.
[0031] When configuring the invention, there is the option of using
a lip seal on the outlet side, which provides the collection
chamber with a seal to the outside. This acts as another means of
avoiding, or at least reducing, unwanted water escaping other than
through the water outlet itself.
[0032] When configuring the invention, there is the option of
designing the securing means as a thread connection which would fit
into a counter thread at the water outlet of a sanitary fitting. A
thread connection provides a particularly straightforward means of
attaching the insert part to the water outlet. Further, a thread
connection may also act as a flow barrier where it meets the
counter thread. As such it is particularly important to ensure that
leachate is collected through the discharge opening rather than
through the thread connection.
[0033] When configuring the invention, there is the possibility of
providing a tool attachment on the outlet side--in particular,
connected via a slot--to support the fastening and/or loosening of
the connections. This could provide the sufficient force needed
when inserting the insert part.
[0034] It is recommended that the invention be used with a sanitary
fitting and using an outlet assembly suitable for the invention as
described above and/or according to one or other of the embodiments
relating to possible outlet assemblies.
[0035] In addressing the issue of simplification identified above,
the features of this subsidiary claim relate to the formation of
the outlet assembly for the invention. In particular, it is
proposed that with the use of an outlet assembly of the type
described above, the insert part should be designed according to
this invention and/or in line with the requirements for such an
insert part. As such, sealing the annular gap between the insert
and the water outlet of the fitting should be straightforward and a
sufficiently tight seal should result without excessive demands
being made of the seal element.
[0036] When configuring the invention, there is the option of
ensuring that the flow resistance between the discharge opening and
the outlet side is lower than the flow resistance of the leachate
path between the securing means and the counter securing means.
This allows for at least one discharge opening to be designed as a
preferred path for the leachate.
[0037] In addressing the issue of simplification identified above,
the features of this subsidiary claims regarding use have been
devised in line with the invention itself. In particular, when
using an insert part of the type described above, it is proposed
that the discharge opening for a leachate path is located upstream
of the insert part's securing means and downstream of its seal
element. The advantage of this is that as only the seal element can
achieve a reduction in pressure sufficient to allow the leachate to
pass, unwanted water leakage--i.e. other than that through the
water outlet itself--can be avoided through coordinated draining by
both the last of the discharge openings and the securing means.
[0038] Here, it is particularly effective if the sanitary insert
part is designed in line with this invention and in particular as
described above, and/or in line with the requirements for such an
insert part. This will ensure that a synergy of the various
advantages described above can be achieved.
[0039] When configuring the invention, it is intended that the seal
element will result in pressure reduction in the leachate path.
This in turn relieves the burden on the securing means.
[0040] Here, it is intended that flow resistance generated by the
seal element should be greater than the flow resistance in the
section of the main flow path running parallel to the seal element
in the insert part. This serves to avoid any impairment of the
function of the functional unit in the main flow path, e.g. its
function as a jet aeration device. A volume flow of a leakage flow
is not very durable compared to the main flow.
[0041] It is particularly efficient if the flow resistance between
the discharge opening and the outlet side is lower than the flow
resistance in the leachate path formed between the securing means
and the counter securing means, as described above. This results in
practically uninhibited drainage of the leachate through the
discharge opening (one minimum) being easily achieved.
[0042] As such, the invention concerns a sanitary insert part with
an inlet side and an outlet side, wherein a securing means is
formed between the inlet side and the outlet side, wherein the
securing means is designed to be detachably secured to a counter
securing means on a water outlet of a sanitary fitting, wherein a
seal element is formed between the securing means and the inlet
side, creating an at least partial seal; and with a jet aeration
device which has an aeration access point that is open towards the
outlet side; and with a discharge opening formed between the seal
element and the securing means which connects the outside of the
sanitary insert to an aeration chamber on the aeration device.
BRIEF DESCRIPTION OF THE DRAWINGS
[0043] The invention is described below in greater detail through a
number of design examples, but is not limited to the examples
given. A larger range of potential design templates can be achieved
by combining the features one or more of the patent claims with
each other, and/or with one or more of the features of the design
examples below.
[0044] These are as follows:
[0045] FIG. 1 A partial, cross-section, perspective view of a
design of a sanitary insert part in line with the invention, which
is inserted into a water outlet of a sanitary fitting, with the
seal element providing a radial seal for the aperture between the
insert part and the water outlet;
[0046] FIG. 2 A detailed view of the first circled section of the
sanitary insert part in FIG. 1, which shows an enlarged version of
the discharge opening between the seal element and the securing
means;
[0047] FIG. 3 An enlarged, detailed view of the second circled
section in FIG. 1, which shows the collection chamber;
[0048] FIG. 4 A vertical cross-section view of another design
example for the sanitary insert part, which is inserted into a
water outlet of a sanitary fitting, with the seal element providing
an axial seal for the aperture between the insert part and the
water outlet; and
[0049] FIG. 5 An enlarged, detailed view of the circled section in
FIG. 4 showing the axial seal between the insert and the water
outlet.
DETAILED DESCRIPTION
[0050] FIGS. 1 to 5 show a sanitary insert part, the whole of which
is marked as key term 1. The sanitary insert part 1 is designed to
be attached to and detached from a water outlet 5 of a sanitary
fitting, enabling straightforward replacement.
[0051] The sanitary insert part 1 has an inlet side 2 facing
upwards on FIGS. 1 and 4 and an outlet side 3 facing downwards.
[0052] On the base structure 12 of the sanitary insert part 1 there
is a securing means 4 provided between the inlet side 2 and the
outlet side 3, which is designed to enable attachment of the
sanitary insert part 1 to a counter securing means 6 of a sanitary
fitting during assembly. The base structure 12 should be at last
partly cylindrical in design. The securing means 4 is located on an
outer surface of the base structure 12, while the counter securing
means 6 is located on an inner surface of a water outlet 5 of the
sanitary fitting.
[0053] A shown in FIGS. 1 to 5, the securing means 4 can be
designed as a thread connection and, in particular, as an external
thread connection. As such, the counter securing means 6 can also
be designed as a corresponding counter thread connection, i.e. an
internal thread connection.
[0054] The sanitary insert part 1 also has a seal element 7, which,
as shown in FIGS. 1 to 3, allows for a radial seal to form in the
aperture 19 between the sanitary insert part 1 (and in particular,
the outer side of the sanitary insert part) and the water outlet 5
of the sanitary fitting. The end stop 12, to which the seal element
7 is attached during assembly, is installed at an angle to the
direction of flow of the water and/or the direction of insertion of
the sanitary insert part 1. The seal does not have to provide a
complete seal of the aperture 19, as any water that flows through
the aperture 19 in spite of the seal will be returned to the main
flow path through the downstream side of the seal element 7.
[0055] FIGS. 4 and 5 illustrate an additional use of the sanitary
insert part 1 with a water outlet 5 using a different design. It
features a water outlet 5 with an end stop 21 that is different
from that shown in FIGS. 1 to 3. An axial seal is formed using a
seal element 7, which provides an at least partial seal preventing
water from passing through the aperture 19. The end stop 21, to
which the seal element 7 is attached during assembly, is installed
perpendicularly, i.e. vertically, to the direction of insertion of
the sanitary insert part 1.
[0056] As such, the sanitary insert part 1 can be inserted into a
number of water outlets with different designs without the need for
additional structural changes. More specifically, it functions
equally well in use with water outlets whose stop surfaces--against
which the seal element 7 is placed--are aligned transversely and/or
perpendicularly to the direction of insertion of the sanitary
insert part 1 and/or the direction of flow of the water.
[0057] The seal element 7 is therefore able to accommodate two
types of stop surface 22 arranged apart from one another, which are
then adapted to form two different types of seal with an end stop
21 for the sanitary fitting.
[0058] The seal element 7, as shown in the design examples, is
annular and attached as a component to the multi-part base
structure 12. It is, however, conceivable that the seal element 7
could be created as part of the base structure 12 itself, for
example as an element of a single-unit base structure 12 or as an
element of one part of a multi-part base structure 12, i.e. the
upper part.
[0059] To aerate jets of water, the sanitary insert part 1 has a
jet aeration device 8 attached to the base structure 12, which
itself features an aeration access point 9 that opens towards the
outlet side 3. Through the insert part, water leads into the
aeration chamber and can be combined with air from outside the
structure through the outlet side 3. The jet aeration device 8
contains a flow barrier 11, which can serve a range of functions,
for example, as an impact surface with nozzle openings. When water
comes into contact with the impact surface and subsequently enters
the aeration chamber 25, it is combined with external air from the
aeration access point 9. As such, the insert provides the
possibility to aerate jets of water which are then released through
the outlet side 3.
[0060] In order to return water that escapes through the aperture
19 to the main flow path--i.e. due to an incomplete seal--the
sanitary insert part 1 is fitted with at least one discharge
opening 10 between the seal element 7 and the securing means 4,
leading ultimately to the jet aeration device 8. The discharge
opening 10, which is formed as part of the base structure 12, is
connected to an opening on the sanitary insert 1, allowing water
that escapes through the aperture 19 to be redirected through the
discharge opening 10 and preventing this water from impairing the
jet pattern. In the direction of flow of water, the discharge
opening 10 is located downstream of the flow barrier 11, but at a
distance behind the securing means 4. In the design example shown
above, for instance, a number of similar discharge openings 10 have
been created, which together cover a large portion of the outer
circumference.
[0061] The discharge openings 10 are arranged above the collection
pocket 26, which is created on the base structure in the form of a
circular groove. As such, this collection pocket 26 carries water
that escapes past the seal element 7 and transports it to the
discharge openings 10.
[0062] In the designs illustrated in FIGS. 1 to 5, the sanitary
insert part 1 has a multi-part base structure 12, comprising three
respective parts. The base body 12 shown above, for example, is
comprised of the seal element 7, an upper part 13 and a lower part
14. The flow barrier 11 can be designed as part of the upper part
13. The aeration chamber 25 can be formed by the lower part 14. The
upper part 13 and or the lower part 14 and/or the seal element 8
can be locked via a mechanical connection, as illustrated here with
a snap-fit connection. The parts that fit together have snap
connectors 23 and/or corresponding counter snap connectors 24. The
seal element 7 can also be designed together with the upper part 13
as a single unit. Here, it is advisable if the upper part 13 has a
greater deformability (preferably elastic) than the lower part
14.
[0063] FIGS. 1 and 3 illustrate a collection chamber 15 that has
been adapted to collect water passing through the leachate path
between the securing means 4 and the counter securing means 6 to
prevent unwanted leaking.
[0064] The collection chamber 15 is located before the aeration
access point 9 in the direction of the flow being drawn in. The
collection chamber 15 has a lip seal 17 which is used to seal it to
the outside of the lower part of the water outlet 5. The collection
chamber 15 also has an overflow opening 16 through which the excess
water that can no longer be held by the collection chamber 15 is
released. As part of the flow of water through the sanitary insert
part 1, this water is carried into the aeration chamber of the jet
aeration device 8 through the aeration access 9 alongside the air
that is also being drawn in. This works to prevent the loss of
leaking water via the leachate path 20, which would otherwise have
an adverse effect on the overall jet pattern. Here, the flow
resistance between the discharge opening 10 and the outlet side 3
must also be lower than the flow resistance in the leachate path
20, which comprises the area between the securing means 4 and the
counter securing means 6. This is due to the fact that the water
will always choose the path of least resistance, draining through
the thin discharge opening 10 rather than traveling along the
leachate path 20 between the securing means 4 and the counter
securing means 6. The seal element 7 also causes a reduction in
pressure along the leachate path 20, as the flow resistance
generated by the seal element 7 is greater than a flow resistance
across the section of the main flow path that runs parallel to the
seal element 7 in the sanitary insert part 1.
[0065] The outlet side 3 of the sanitary insert part 1 also
features a grooved tool attachment 18. The sanitary insert part 1
can be inserted, i.e. screwed, into the water outlet 5 or detached,
i.e. unscrewed, from the water outlet 5 by attaching a tool the
tool attachment 18 and using an opening motion, preferably a rotary
movement.
LIST OF ELEMENTS
[0066] 1 Sanitary insert part
[0067] 2 Inlet side
[0068] 3 Outlet side
[0069] 4 Securing means
[0070] 5 Water outlet of a sanitary fitting
[0071] 6 Counter securing means
[0072] 7 Seal element
[0073] 8 Jet aeration device
[0074] 9 Aeration access
[0075] 10 Discharge opening
[0076] 11 Flow barrier
[0077] 12 Base structure
[0078] 13 Upper part of the base structure
[0079] 14 Lower part of the base structure
[0080] 15 Collection chamber
[0081] 16 Overflow opening
[0082] 17 Lip seal
[0083] 18 Tool attachment
[0084] 19 Aperture
[0085] 20 Leachate path
[0086] 21 End stop
[0087] 22 Stop surface
[0088] 23 Snap connector
[0089] 24 Counter snap connector
[0090] 25 Aeration chamber
[0091] 26 Collection pocket
* * * * *