WO2017036877A1

WO2017036877A1 - Flush valve for a toilet flushing unit, throttle for a flush valve, toilet tank having a flush valve and method for the assembly thereof

Info

Publication number: WO2017036877A1
Application number: PCT/EP2016/069956
Authority: WO
Inventors: Ralf DERKSEN
Original assignee: Villeroy & Boch Ag
Priority date: 2015-09-03
Filing date: 2016-08-24
Publication date: 2017-03-09
Also published as: EP3344820A1; DE102015114735A1; EP3344820B1

Abstract

The invention relates to a flush valve (1) for a toilet tank having: an outlet opening (15); an overflow tube (10) which can be moved between an open position and a closed position for opening and closing the outlet opening (15); a throttle (30) which is situated downstream of the overflow tube (10) and is designed to set the volume of flushing water which flows through the flush valve (1) when the flush valve (1) is opened, the throttle (30) comprising an actuating means (20) which can be actuated for adjusting the throttle (30) when the flush valve (1) is in the assembled state.

Description

Drain valve for toilet flushing unit, restrictor for drain valve, cistern with drain valve and method for its installation

description

The invention relates to a drain valve for a toilet flushing unit with the features of the preamble of claim 1, and a throttle for a drain valve, a cistern with drain valve and a method for its assembly. In recent times, rimless toilet bowls are getting bigger and bigger

Popularity. They have many advantages over conventional toilet bowls. A rimless toilet bowl has, in contrast to a conventional toilet bowl with flushing edge only a minimal edge directly on the water inlet. This simplifies cleaning, resulting in an improved hygienic condition. In addition, the rimless toilet bowl is often preferred from an aesthetic point of view.

For borderless toilet bowl, however, the problem arises that the

Volume flow of the rinse water, so the amount of flushing water supplied per unit time, must be precisely adjusted. If the volume flow is too low, the water supply opposite part of the toilet bowl is not sufficiently flushed. If the volume flow is too high, flushing water can splash beyond the edge of the pool due to the lack of flushing rim. The adjustment of the volume flow is usually made during installation.

Devices for adjusting the volume flow are known in the prior art. For example, EP 2 602 391 A1 proposes installing a purge flow restrictor for adjusting the volume flow in the flush water inlet of the toilet bowl.

However, the known from the prior art solution is perceived as disadvantageous, since the adjustment of the flow rate after installation of the toilet is expensive. Since the volume flow must be set very precisely as described above, a poorly accessible element leads to the setting of the

Volume flow to increased installation costs, which leads to longer installation times and associated higher costs. It is therefore an object of the present invention to provide a solution for adjusting the flushing water flow rate at which the setting of

Volumetric flow even after installation of the toilet is simplified or even possible.

This object is achieved by a drain valve for a toilet flushing unit according to

Claim 1, a throttle for a drain valve according to claim 7, a cistern with a drain valve according to claim 12 and a method for its assembly according to claim 13 solved.

In particular, the object is achieved by a flushing valve for a toilet flushing unit, comprising:

an outlet opening;

- An overflow pipe, which between an open and closed position for

Opening and closing the outlet opening is movable;

a throttle, which is arranged downstream of the overflow pipe and designed to adjust the volume flow of flushing water which flows through the drain valve when the drain valve is opened,

wherein the throttle comprises an actuating means which is operable in the assembled state of the drain valve for adjusting the throttle.

A key idea of the invention is not to provide the element for adjusting the volume flow in the toilet bowl, but to integrate into the drain valve of the cistern. As a result, the actuating means is accessible even in the assembled state of the toilet, so that a setting of the

Volumetric flow is possible at any time after installation. This will be the

Assembly process simplified in itself. An adjustment of the volume flow is possible at any time using a drain valve according to the invention,

for example, when the toilet bowl is to be changed. This simplifies the installation and use of rimless toilets.

In a preferred embodiment, the throttle is arranged in the outlet opening of the drain valve. This allows a compact and robust construction of the drain valve. It is further preferred that the volume flow in a range between 1.8 l / s (liters per second) and 2.6 l / s, more preferably between 2.0 l / s and 2.4 l / s is adjustable , This ensures that the drainage valve according to the invention is suitable for use with common rimless toilet bowls and the volume flow of the rinse water can be adjusted so that both an insufficient rinsing effect due to low volume flow and overspray due to excessive volume flow can be avoided.

In a preferred embodiment, the actuating means is guided through the overflow pipe. This ensures a simple construction and protects the actuating means by guiding in the overflow pipe. It is particularly preferred here that the actuating means projects beyond the overflow pipe. Thus, the actuating means in the installed state of the drain valve is easy to reach.

Alternatively, it is possible that the actuating means is formed by the overflow tube, which is designed to be rotatable about its central axis. At this

Design eliminates the need to provide a separate actuator. As a result, the construction of the drain valve is simplified.

In the context of the invention, a throttle is further specified for use in a drain valve. The throttle according to the invention comprises at least one throttle element, wherein for adjusting the volume flow of the

Flow cross-section of the throttle is adjustable by a rotational movement.

The throttle element of the throttle according to the invention is connected to the

Actuating element of the drain valve in operative connection and thus enables the inventive adjustment of the volume flow by means of

Actuating element. This is achieved by a variation of the flow cross section of the throttle. The throttle element can be constructed, for example, according to the principle of a diaphragm, wherein by means of the rotational movement, the diaphragm is open or closed. Preferably, the flow cross-section between a maximum value and 90% of the maximum value can be varied. In a further embodiment, the throttle comprises two throttle elements, wherein the relative position of the throttle elements by means of the actuating means for Change in the flow cross section is changeable. This form of throttle is structurally simple to implement.

Preferably, of the two throttle elements, a first throttle element is fixedly mounted and a second throttle element movable, in particular

rotatably mounted. Thus, the adjustment of the volume flow by means of the actuating element can be realized particularly easily.

It is further preferred that the throttle elements are circular and have circular segment-shaped openings. This allows a cost-effective and simple production of the throttle.

In a preferred embodiment, the throttle elements are circular and have circular segment-shaped openings. This construction allows a

stepless adjustment of the flow rate and is technically easy to implement.

It is further preferred that the outer contour of the throttle elements of

Inner contour of the outlet opening of the drain valve is adjusted. Such a designed throttle can be easily installed in the outlet of the drain valve and allows precise adjustment of the flow rate.

In the context of the invention, a cistern is further provided with a drain valve having an outlet, wherein the drain valve is connected to the outlet in the interior of the cistern. This cistern is suitable for use with a rimless toilet bowl, since the volume flow of the rinse water can be adjusted by means of the actuating element, which is easily accessible when the cistern is open.

Furthermore, in the context of the invention, a mounting method for a cistern is specified, which comprises the following steps:

- Connecting the cistern to a water connection;

- Installing the drain valve in the cistern;

- Connect the outlet of the drain valve with a

Toilet bowl; and then

- Adjusting the volume flow of the rinse water by means of

Actuating means of the drain valve. With this mounting method it is achieved that the adjustment of the flushing water volume flow can take place after the cistern and toilet bowl are completely assembled. Thus, the adjustment of the flow rate at any time after installation in a simple manner possible. It does not matter in which order the connection of the cistern, the installation of the drain valve in the cistern and the connection of drain valve and

Toilet bowls are performed. The only thing that matters is that the

Adjustment of the volume flow for the correct rinsing operation of the toilet after complete assembly can be done.

The invention will also be described in terms of further features and advantages based on embodiments, which are explained in more detail with reference to the schematic figures.

Hereby show:

Fig. 1 is a perspective view of a drain valve according to a first

Embodiment of the invention; Fig. 2 is a section of a drain valve according to a first

Embodiment of the invention;

Fig. 3a is a perspective view of the lower end of a

Actuator according to a first embodiment of the invention;

3b shows a schematic plan view of a throttle in three states with different flow cross sections; Fig. 3c is a schematic section through the throttle with different

Flow cross-sections of Fig. 3b;

Fig. 4a is a schematic plan view of a throttle element according to

another embodiment of the invention; 4b is an exploded view of a throttle with two relatively movable throttle elements according to the other

Embodiment of the invention; Fig. 4c is a perspective view of the throttle with two relatively movable throttle elements according to the other

Embodiment of the invention.

FIG. 1 shows a perspective view of a drain valve 1 according to a first exemplary embodiment of the invention. The drain valve 1 has a housing 11 which is connected via supports 12 to an end portion 13. The end portion 13 is tubular and has an external thread 13a, by means of which the drain valve 1 can be mounted in a cistern. Of the

End portion defines an outlet opening 15 of the drain valve 1, which is closed at its upper end by a seal 14.

In the housing 11, an overflow pipe 10 is provided, which is movably mounted along its longitudinal axis in the housing 11. The overflow tube 10 has at its lower end a projection which is connected to a seal 14. If the overflow pipe 10 is raised, the seal 14 is raised and the outlet opening 15 is opened. Water in the cistern flows between the supports 12 through the outlet opening 15 is the

Overflow pipe 10 is lowered, the seal 14 closes the outlet opening 15th

It can be seen in Fig. 1 further comprises an actuating means 20 which is designed as a rod which is guided through the overflow pipe 10 and protrudes out of this. In the embodiment shown here, the rod at the top of a knurl.

Fig. 2 shows a section of the drain valve 1 of Fig. 1. The outlet port 15 has a diameter of 50 millimeters. In the outlet opening 15, a throttle 30 is arranged, which is in operative connection with the actuating element 20. FIG. 3a shows a perspective view of the lower end of the

Actuator 20. The end piece 20b is designed as a ring member which is connected to radial struts with the rod of the actuating element 20. The End piece 20b of the actuating element is connected to the throttle 30 in such a way, for example adhesively bonded, that a rotational movement of the actuating element 20 is transmitted via the end piece 20b to the throttle 30. For adjusting the volume flow of rinsing water, which opens when opening the

Outflow valve 1 flows through the outlet opening 15, the flow cross section of the throttle 30, and thus the flow cross section of the outlet opening 15 is changed. For this purpose, the rod of the actuating element 20 is rotated on the knurl, and transmit the rotational movement of the actuating element 20 to the throttle 30 connected thereto. Since the rod of the actuating element 20 projects out of the overflow pipe 10, this adjustment of the volume flow is easily possible even in the finished assembled state of the toilet. in the

Next, the structure of the reactor 30 and its operation will be described in more detail.

An exemplary embodiment of the throttle 30 is shown schematically in FIGS. 3b and 3c. The throttle 30 is formed here from a throttle element 31, which consists of a diaphragm structure. In Fig. 3b, the throttle element 31 is shown in three different positions in plan view, in FIG. 3c is a section through the throttling element 31 in these three positions. The figures show only the flow cross-section of the throttle element 31, not shown is the

Outer edge of the throttle element 31, which is connected to the end piece 20b of the

Actuator 20 is operatively connected. With the throttle element 31 from FIGS. 3b and 3c, the flow cross section of the throttle 30 can be reduced steplessly from a maximum value (left) to smaller values. Of the

Outer diameter of the throttle element 31 corresponds to the inner diameter of the outlet opening 15, so that the throttle 30 sits flush in the outlet opening 15.

Another embodiment of the throttle 30 is shown in FIGS. 4a to 4c. The throttle 30 according to this embodiment comprises two throttle elements 32a and 32b which are substantially identical. FIG. 4a shows a plan view of one of the throttle elements 32a. The throttle element 32a has a circular shape and has passage openings in the form of circular segments. The throttle 30 according to this embodiment is formed of two throttle elements 32a, 32b, which lie on each other and are rotatable relative to each other. Fig. 4b shows a schematic view of the throttle 30 in an exploded view. When installed, the lower throttle element 32a is fixedly mounted in the outlet opening 15 and not rotatable. At the center of the upper throttle element 32b, the rod of the actuator 20 is mounted (not shown).

Fig. 4c illustrates the operation of the throttle 30. If the

Throttle elements 30a, 30b congruent to each other, is the

Flow cross section of the throttle 30 maximum. Will now be the top

Throttle element 32b is rotated against the lower throttle element 32a, the flow cross-section decreases, since the circular segment openings of the upper

Throttle element 32b are partially hidden by the segment-shaped struts of the lower throttle element 32a. Thus, the volume flow of the rinse water can be infinitely reduced from a maximum value. The

Dimensions of the circular segment-shaped passage openings can be chosen so that the throttle 30 with congruent position of the throttle elements 32a, 32b a volume flow of 2.4 l / s and lets through with complete non-coverage of the segment-shaped struts a volume flow of 2.0 l / s ,

The drain valve 1 is mounted in the outlet of a cistern (not shown). When installing a cistern with the drain valve 1, the complete installation of the toilet system can be performed, including the

Connection of the outlet opening 15 to a toilet bowl. It can now be carried out a flushing with the cistern open and the

Volumetric flow can be adjusted by means of the actuating element 20. The invention has been described with reference to specific embodiments. In addition, various modifications are possible without departing from the spirit of the invention.

In the embodiment of FIGS. 1 and 2, the actuator 20 is designed as a rod with a knurl, which is guided in the overflow pipe 10. But it is also possible that the actuating element 20 is formed by the overflow pipe 10 itself. The overflow pipe 10 is then at its lower end in operative connection with the throttle 30, adjusting the volume flow can be done by rotation of the overflow pipe 10 about its longitudinal axis.

The end piece 20b of the actuating element 20 is described in the above

Embodiment connected to the throttle 30. This connection can be realized for example by gluing the two elements. The throttle 30 may also be designed in one piece with the end piece 20b.

It is only decisive that the force exerted on the actuating means 20 is transmitted to the throttle 30, so that the volume flow by means of the actuating means 20 is adjustable.

LIST OF REFERENCE NUMBERS

1 drain valve

10 overflow pipe

11 housing

12 carriers

13 end section

13a external thread

14 seal

15 outlet opening

20 actuating means

20b tail

30 throttle

31 throttle element

32a first throttle element

32b second throttle element

Claims

claims

Drain valve (1) for a toilet cistern with:

- An outlet opening (15);

- An overflow pipe (10) which is movable between an open and closed position for opening and closing the outlet opening (15);

- A throttle (30) disposed downstream of the overflow pipe (10) and for adjusting the volume flow of rinse water, which flows when opening the drain valve (1) through the drain valve (1) is formed; wherein the throttle (30) comprises an actuating means (20) which is operable in the mounted state of the drain valve (1) for adjusting the throttle (30).

Drain valve (1) according to claim 1,

d a d u rc h e ke n ze i c h n et that

the throttle (30) in the outlet opening (15) of the drain valve (1) is arranged.

Drain valve (1) according to one of the preceding claims,

d a d u rc h e ke n ze i c h n et that

the volume flow in a range between 1.8 l / s (liters per second) and 2.6 l / s, preferably between 2.0 l / s and 2.4 l / s is adjustable.

Drain valve (1) according to one of the preceding claims,

d a d u rc h e ke n ze i c h n et that

the actuating means (20) is guided through the overflow pipe (10).

Drain valve (1) according to one of the preceding claims,

d a d u rc h e ke n ze i c h n et that

the actuating means (20) projects beyond the overflow pipe (10).

Drain valve (1) according to one of claims 1 to 3,

d a d u rc h e ke n ze i c h n et that

the actuating means (20) is formed by the overflow pipe (10), which is designed to be rotatable about its central axis. A throttle (30) for use in a drain valve (1) according to any one of claims 1 to 6,

wherein the throttle (30) comprises at least one throttle element (31), wherein for adjusting the volume flow of the flow cross-section of the throttle (30) is adjustable by a rotational movement.

Throttle (30) for use in a drain valve according to any one of

Claims 1 to 6, and according to claim 7,

wherein the throttle (30) comprises two throttle elements (32a, 32b), wherein the relative position of the throttle elements (32a, 32b) by means of

Actuating means (20) for changing the flow cross section is variable.

An orifice (30) for use in a drain valve according to claim 8, wherein:

a first throttle element (32a) is fixedly mounted and a second

Throttle element (32b) movable, in particular rotatably mounted.

Throttle (30) according to one of the preceding claims, in particular according to claim 8 or 9,

d a d u rc h e ke n ze i c h n et that

the throttle elements (32a, 32b) are circular and have circular segment-shaped openings.

Throttle (30) according to one of the preceding claims, in particular according to one of claims 7 to 10,

d a d u rc h e ke n ze i c h n et that

the outer contour of the throttle elements (32a, 32b) of the inner contour of the outlet opening (15) of the drain valve (1) is adapted.

Cistern with a drain valve (1) according to any one of claims 1 to 6, no

an outlet, wherein the drain valve (1) is connected to the outlet inside the cistern.

Method for assembling a cistern with drain valve (1) according to claim 12, comprising the following steps: - Connecting the cistern to a water connection;

- Installing the drain valve (1) in the cistern;

- connecting the outlet opening (15) of the drain valve (1) with a toilet bowl; and then

- Adjusting the volume flow of the rinse water by means of the actuating means (20) of the drain valve (1).