DE202015009871U1 - Drain valve for toilet flush unit, throttle for drain valve and cistern with drain valve - Google Patents

Abstract

Drain valve (1) for a toilet cistern with: - an outlet opening (15); - an overflow pipe (10) which can be moved between an open and closed position for opening and closing the outlet opening (15); - a throttle (30) which is arranged downstream of the overflow pipe (10) and is designed to adjust the volume flow of flushing water which flows through the drain valve (1) when the drain valve (1) is opened; wherein the throttle (30) comprises an actuating means (20) which can be actuated to adjust the throttle (30) in the assembled state of the drain valve (1).

Description

The invention relates to a drain valve for a toilet flush unit with the features of the preamble of claim 1, as well as a throttle for a drain valve and a cistern with drain valve according to the preambles of claims 7 and 12.

In recent times, rimless toilet bowls have become increasingly popular. They have many advantages over conventional toilet bowls. In contrast to a conventional toilet bowl with a flushing rim, a rimless toilet bowl only has a minimal rim directly at the water inlet. This simplifies cleaning, which leads to an improved hygienic condition. In addition, the rimless toilet bowl is often preferred from an aesthetic point of view.

In the case of rimless toilet bowls, however, the problem arises that the volume flow of the flushing water, i.e. the amount of flushing water supplied per unit of time, has to be set precisely. If the volume flow is too low, the part of the toilet bowl opposite the water inlet will not be flushed sufficiently. If the volume flow is too high, rinsing water can splash over the edge of the pool due to the missing rinse rim. The setting of the volume flow is usually made during assembly.

Devices for adjusting the volume flow are known in the prior art. In the patent specification EP 2 602 391 A1 it is proposed, for example, to mount a flushing flow throttle in the flushing water inlet of the toilet bowl to adjust the volume flow.

The solution known from the prior art is perceived as disadvantageous, however, since the setting of the volume flow after the toilet has been installed is complex. Since the volume flow must be set very precisely, as described above, a poorly accessible element for setting the volume flow leads to increased installation effort, which leads to longer installation times and the associated higher costs.

It is therefore the object of the present invention to provide a solution for setting the flushing water volume flow in which the setting of the volume flow is simplified or even possible after the toilet has been installed.

This object is achieved by a drain valve for a toilet flush unit according to claim 1, a throttle for a drain valve according to claim 7 and by a cistern with a drain valve according to claim 12.

• - eine Auslassöffnung;
• - ein Überlaufrohr, das zwischen einer Offen- und Schließstellung zum Öffnen und Verschließen der Auslassöffnung bewegbar ist;
• - eine Drossel, die stromabwärts des Überlaufrohrs angeordnet und zur Einstellung des Volumenstroms von Spülwasser, das bei Öffnen des Ablaufventils durch das Ablaufventil fließt, ausgebildet ist,

wobei die Drossel ein Betätigungsmittel umfasst, das im montierten Zustand des Ablaufventils zum Verstellen der Drossel betätigbar ist.In particular, the object is achieved by a drain valve for a toilet flush unit, which has the following:

• - an outlet opening;
• an overflow pipe which can be moved between an open and closed position for opening and closing the outlet opening;
• - A throttle which is arranged downstream of the overflow pipe and designed to adjust the volume flow of flushing water that flows through the drain valve when the drain valve is opened,

wherein the throttle comprises an actuating means which can be actuated in the assembled state of the drain valve to adjust the throttle.

A core idea of the invention is not to provide the element for adjusting the volume flow in the toilet bowl, but rather to integrate it into the drain valve of the cistern. As a result, the actuating means is accessible even when the toilet is installed, so that the volume flow can be adjusted at any time after installation. This simplifies the assembly process itself. An adjustment of the volume flow is possible at any time when using a drain valve according to the invention, for example when the toilet bowl is to be changed. This simplifies the assembly and use of rimless toilets.

In a preferred embodiment, the throttle is arranged in the outlet opening of the drain valve. This enables a compact and robust construction of the drain valve.

It is further preferred that the volume flow can be set in a range between 1.8 l / s (liters per second) and 2.6 l / s, particularly preferably between 2.0 l / s and 2.4 l / s . This ensures that the drain valve according to the invention is suitable for use with common rimless toilet bowls and that the volume flow of the flushing water can be set in such a way that both an insufficient flushing effect due to a volume flow that is too low and an overspray due to a volume flow that is too high 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 being guided in the overflow pipe. It is particularly preferred here that the actuating means protrudes beyond the overflow pipe. The actuating means can thus be easily reached when the drain valve is installed.

Alternatively, it is possible that the actuating means is formed by the overflow pipe, which is designed to be rotatable about its central axis. With this design, there is no need to provide a separate actuating means. This simplifies the construction of the drain valve.

In the context of the invention, a throttle for use in a drain valve is also specified. The throttle according to the invention comprises at least one throttle element, the flow cross-section of the throttle being adjustable by a rotary movement in order to adjust the volume flow.

The throttle element of the throttle according to the invention is in operative connection with the actuating element of the drain valve and thus enables the volume flow according to the invention to be set by means of the actuating element. This is achieved by varying the flow cross section of the throttle. The throttle element can for example be constructed according to the principle of a diaphragm, with the diaphragm being able to be opened or closed by means of the rotary movement. The flow cross section can preferably be varied between a maximum value and 90% of the maximum value.

In a further embodiment, the throttle comprises two throttle elements, the relative position of the throttle elements being able to be changed by means of the actuating means for changing the flow cross section. This form of the throttle is easy to implement in terms of construction.

Preferably, of the two throttle elements, a first throttle element is fixedly mounted and a second throttle element is movably, in particular, rotatably mounted. The setting of the volume flow by means of the actuating element can thus be implemented particularly easily.

It is further preferred that the throttle elements are circular and have circular segment-shaped openings. This enables inexpensive and simple production of the throttle.

In a preferred embodiment, the throttle elements are circular and have circular segment-shaped openings. This design allows the volume flow to be continuously adjusted and is technically easy to implement.

It is further preferred that the outer contour of the throttle elements is adapted to the inner contour of the outlet opening of the drain valve. A throttle designed in this way can easily be installed in the outlet opening of the drain valve and allows the volume flow to be set precisely.

In the context of the invention, a cistern with a drain valve is also specified, which has an outlet, the drain valve being 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 flushing water can be adjusted by means of the actuating element, which is easily accessible when the cistern is open.

• - Anschließen des Spülkastens an einen Wasseranschluss;
• - Einbauen des Ablaufventils in den Spülkasten;
• - Verbinden der Auslassöffnung des Ablaufventils mit einem Toilettenbecken; und danach
• - Einstellen des Volumenstroms des Spülwassers mittels des Betätigungsmittels des Ablaufventils.

The cistern can be assembled as follows:

• - Connecting the cistern to a water connection;
• - installing the drain valve in the cistern;
• - connecting the outlet of the drain valve to a toilet bowl; and then
• - Adjustment of the volume flow of the flushing water by means of the actuating means of the drain valve.

With such an assembly it is achieved that the setting of the flushing water volume flow can take place after the cistern and toilet bowl are completely assembled. This means that the volume flow can be set easily at any time after installation. It doesn't matter in which order the cistern is connected, the drain valve is installed in the cistern and the drain valve and toilet bowl are connected. The only decisive factor is that the volume flow can be set for correct flushing of the toilet after it has been fully installed.

In the following, the invention is also described with regard to further features and advantages on the basis of exemplary embodiments, which are explained in more detail with the aid of the schematic illustrations.

• 1 eine perspektivische Ansicht eines Ablaufventils gemäß einem ersten Ausführungsbeispiel der Erfindung;
• 2 einen Schnitt eines Ablaufventils gemäß einem ersten Ausführungsbeispiel der Erfindung;
• 3a eine perspektivische Ansicht des unteres Endes eines Betätigungselements gemäß einem ersten Ausführungsbeispiel der Erfindung;
• 3b eine schematische Draufsicht einer Drossel in drei Zuständen mit verschiedenen Strömungsquerschnitten;
• 3c einen schematischen Schnitt durch die Drossel mit verschiedenen Strömungsquerschnitten aus 3b;
• 4a eine schematische Draufsicht eines Drosselelements gemäß einem weiteren Ausführungsbeispiel der Erfindung;
• 4b eine Explosionsdarstellung einer Drossel mit zwei relativ zueinander bewegbaren Drosselelementen gemäß dem weiteren Ausführungsbeispiel der Erfindung;
• 4c eine perspektivische Ansicht der Drossel mit zwei relativ zueinander bewegbaren Drosselelementen gemäß dem weiteren Ausführungsbeispiel der Erfindung.

Here show:

• 1 a perspective view of a drain valve according to a first embodiment of the invention;
• 2 a section of a drain valve according to a first embodiment of the invention;
• 3a a perspective view of the lower end of an actuating element according to a first embodiment of the invention;
• 3b a schematic plan view of a throttle in three states with different flow cross-sections;
• 3c a schematic section through the throttle with different flow cross-sections 3b ;
• 4a a schematic plan view of a throttle element according to a further embodiment of the invention;
• 4b an exploded view of a throttle with two relatively movable throttle elements according to the further embodiment of the invention;
• 4c a perspective view of the throttle with two throttle elements movable relative to one another according to the further embodiment of the invention.

In 1 Fig. 3 is a perspective view of a drain valve 1 shown according to a first embodiment of the invention. The drain valve 1 has a housing 11 that about carrier 12 with an end section 13 connected is. The end section 13 is tubular and has an external thread 13a on, by means of which the drain valve 1 can be mounted in a cistern. The end portion defines an outlet opening 15th of the drain valve 1 at their upper end by a seal 14th is locked.

In the case 11 is an overflow pipe 10 provided along its longitudinal axis in the housing 11 is movably mounted. The overflow pipe 10 has at its lower end a protrusion with a seal 14th connected is. Will the overflow pipe 10 the seal is raised too 14th raised and the outlet opening 15th open. Water in the cistern flows between the beams 12 through the outlet opening 15th . Will the overflow pipe 10 lowered, closes the seal 14th the outlet opening 15th .

It is in 1 furthermore an actuating means 20th to see, which is designed as a rod that passes through the overflow pipe 10 is guided and protrudes from this. In the embodiment shown here, the rod has a knurl at the upper end.

2 shows a section of the drain valve 1 out 1 . The outlet opening 15th has a diameter of 50 millimeters. In the outlet opening 15th is a thrush 30th arranged in operative connection with the actuating element 20th is.

3a Figure 3 shows a perspective view of the lower end of the actuator 20th . The end piece 20b is designed as a ring element with radial struts with the rod of the actuating element 20th connected is. The end piece 20b the actuator is with the throttle 30th connected in such a way, for example glued, that a rotary movement of the actuating element 20th over the end piece 20b on the throttle 30th is transmitted.

For setting the volume flow of flushing water when the drain valve is opened 1 through the outlet opening 15th flows, the flow cross-section of the throttle 30th , and thus the flow cross-section of the outlet opening 15th changed. This is done using the rod of the actuating element 20th rotated on the knurl, and the rotary movement of the actuating element 20th on the associated throttle 30th transfer. As the rod of the actuator 20th from the overflow pipe 10 protrudes, this setting of the volume flow is possible without any problems even when the toilet is fully assembled. The following is the structure of the choke 30th and how it works is described in more detail.

An embodiment for the throttle 30th is schematically in 3b and 3c shown. The thrush 30th is here from a throttle element 31 formed, which consists of a diaphragm structure. In 3b is the throttle element 31 shown in three different positions in plan view, in 3c is a section through the throttle element 31 shown in these three positions. The figures only show the flow cross section of the throttle element 31 , not shown is the outer edge of the throttle element 31 that with the tail 20b of the actuating element 20th is in operative connection. With the throttle element 31 out 3b and 3c can be the flow cross-section of the throttle 30th can be continuously reduced from a maximum value (left) to lower values. The outside diameter of the throttle element 31 corresponds to the inner diameter of the outlet opening 15th so that the throttle 30th flush in the outlet opening 15th sits.

Another embodiment for the throttle 30th is in 4a to 4c shown. The thrush 30th according to this embodiment comprises two throttle elements 32a and 32b that are essentially identical. 4a Figure 3 shows a top 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 thrush 30th according to this embodiment is made up of two throttle elements 32a , 32b formed, which lie on top of one another and are rotatable relative to one another. 4b shows a schematic view of the throttle 30th in exploded view. The lower throttle element is in the installed state 32a firmly in the outlet opening 15th stored and not rotatable. At the center of the upper throttle element 32b is the rod of the actuator 20th attached (not shown).

4c illustrates how the throttle works 30th . If the throttle elements 30a, 30b are congruent on top of one another, the flow cross-section is the throttle 30th maximum. Now becomes the upper throttle element 32b against the lower throttle element 32a twisted, the flow cross-section is reduced because the circle segment openings of the upper throttle element 32b partly from the segment-shaped struts of the lower throttle element 32a be covered. Thus, the volume flow of the flushing water can be reduced steplessly starting from a maximum value. The dimensions of the circular segment-shaped passage openings can be chosen so that the throttle 30th with congruent position of the throttle elements 32a , 32b allows a volume flow of 2.4 l / s to pass through and, if the segment-shaped struts are not completely covered, allows a volume flow of 2.0 l / s to pass through.

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 carried out, including the connection of the outlet opening 15th to a toilet bowl. A flushing process can now be carried out with the cistern open, and the volume flow can be performed using the actuating element 20th can be set.

The invention has been described on the basis of specific exemplary embodiments. Various modifications are also possible without departing from the concept of the invention.

In the exemplary embodiment from 1 and 2 is the actuator 20th designed as a rod with a knurl, which is in the overflow pipe 10 is led. But it is also possible that the actuating element 20th through the overflow pipe 10 itself is formed. The overflow pipe 10 is then in operative connection with the throttle at its lower end 30th The volume flow can be adjusted by turning the overflow pipe 10 take place around its longitudinal axis.

The end piece 20b of the actuating element 20th is in the described embodiment with the throttle 30th connected. This connection can be implemented, for example, by gluing the two elements. The thrush 30th but can also be made in one piece with the end piece 20b be executed. It is only decisive that the force acting on the actuating means 20th is exercised on the throttle 30th is transmitted, so that the volume flow by means of the actuating means 20th is adjustable.

List of reference symbols

1

Drain valve

10

Overflow pipe

11

casing

12

carrier

13

End section

13a

External thread

14th

poetry

15th

Outlet opening

20th

Actuating means

20b

End piece

30th

throttle

31

Throttle element

32a

first throttle element

32b

second throttle element

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• EP 2602391 A1 [0004]

Claims (12)

Drain valve (1) for a toilet cistern with: - an outlet opening (15); - An overflow pipe (10) which can be moved between an open and closed position for opening and closing the outlet opening (15); - A throttle (30) which is arranged downstream of the overflow pipe (10) and is designed to adjust the volume flow of flushing water that flows through the drain valve (1) when the drain valve (1) is opened; wherein the throttle (30) comprises an actuating means (20) which can be actuated to adjust the throttle (30) in the assembled state of the drain valve (1). Drain valve (1) Claim 1 , characterized in that the throttle (30) is arranged in the outlet opening (15) of the drain valve (1). Drain valve (1) according to one of the preceding claims, characterized in that the volume flow is 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, characterized in that the actuating means (20) is guided through the overflow pipe (10). Drain valve (1) according to one of the preceding claims, characterized in that the actuating means (20) protrudes beyond the overflow pipe (10). Drain valve (1) after one of the Claims 1 to 3 , characterized in that the actuating means (20) is formed by the overflow pipe (10) which is designed to be rotatable about its central axis. Throttle (30) for use in a drain valve (1) according to one of the Claims 1 to 6th wherein the throttle (30) comprises at least one throttle element (31), the flow cross-section of the throttle (30) being adjustable by a rotary movement in order to adjust the volume flow. Throttle (30) for use in a drain valve according to one of Claims 1 to 6th , as well as after Claim 7 wherein the throttle (30) comprises two throttle elements (32a, 32b), the relative position of the throttle elements (32a, 32b) being changeable by means of the actuating means (20) for changing the flow cross-section. Throttle (30) for use in a drain valve according to Claim 8 , characterized in that a first throttle element (32a) is fixedly mounted and a second throttle element (32b) is movably, in particular rotatably mounted. Throttle (30) according to one of the preceding claims, in particular according to Claim 8 or 9 , characterized in 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 the Claims 7 to 10 , characterized in that the outer contour of the throttle elements (32a, 32b) is adapted to the inner contour of the outlet opening (15) of the drain valve (1). Cistern with a drain valve (1) after one of the Claims 1 to 6th , characterized by an outlet, the drain valve (1) being connected to the outlet in the interior of the cistern.

Images