DE1091498B - Flow-dependent valve for a flushing valve equipped with a pipe interrupter - Google Patents

Description

GERMAN

In the case of the flushers used today for toilets, which are connected directly to the water supply network bind, you have to consider several points of view. One of the most important demands is therein to see that a safety device must be built into the discharge pipe to prevent a any suction in the inflow line is sucked dirty water from the sink, which is could collect there as a result of a blockage. In the simplest case, one helps oneself in such a way that holes are made in the flush pipe in front of its mouth in the sink, with the result that that only air can penetrate into the fresh water pipe if suction should arise in this. On the other hand, there is a desire not to suck in air during the actual rinsing process and into the Allow rinsing water to penetrate, as this occurs both before mixing with the water and afterwards Noises that are annoying, especially in new buildings with relatively thin walls Can lead to disruptions for residents. Not infrequently the flushing noise is even through several Heard floors, as the vibrations are transmitted particularly well via the pipelines. Of the The reason for the noise is essentially to be seen in the fact that the sucked in air is at the edges and corners break and become swirled as a result. When they hit the pipe wall, the latter becomes too Vibrations are excited, the frequency of which essentially depends on the suction speed. Although thus on the one hand there is a need to suck in as little air as possible during the flushing process, so is On the other hand, it is also advantageous if air is entrained into the sink, since this increases the flushing effect. Both demands seem to be mutually exclusive, and in fact, no solutions have yet become known which completely overcome the problem.

So one knows devices that serve the purpose mentioned above, namely a sucking back of avoid any water in the sink. They are designed so that in the flush pipe a sleeve which is closed at the end and which is open opposite to the direction of flow is arranged, which has holes in its lateral surface, which are covered by an elastic sleeve surrounding the sleeve are. In addition, holes are arranged in the tube at the same height as the sleeve. During the rinsing process the water must first flow into the sleeve and then flow through the holes in the flush pipe, pushing the cuff outwards. When the flushing process ends, the cuff folds over the sleeve, so that in this way the fresh water flow dependent Valve

for one with a pipe interrupter

provided dishwasher

Applicant:

Weichbrodt & Friedrich,
Berlin SW 29, Kottbusser Damm 75

line is closed. In addition, the water level drops due to the air holes in the flush pipe below. Both measures therefore fully satisfy the safety conditions.

In contrast, this device does not meet the other requirements in a satisfactory manner. That’s the one The cuff is so elastic that it seals against the air holes during the flushing process Noise does not arise, but the flushing effect is impaired. On the other hand, is the cuff less elastic, so that it does not lie against the air holes during the flushing process, this has to be As a result, air is entrained, which causes the noises mentioned. In addition, the said Device also have other disadvantages, which are that the sleeve arranged in the tube represents a significant flow resistance that affects the speed of the rinse water and thus the Rinsing effect reduced. Furthermore, the wall of the sleeve can already be through its holes The water flowing through it is excited to vibrate, which is reflected in a high-pitched whistling sound Way noticeable.

The problems identified are now solved in an advantageous manner by the invention. She concerns a flow-dependent valve for a flushing device equipped with a pipe interrupter, in particular for a toilet pressure flushing device, consisting of an expandable sleeve fastened in the drainage connection of the flushing device, those forming the pipe interrupter during the flushing process due to the flow pressure Air inlet openings is pressed. This valve is characterized in that the expandable

009 628/59

Cuff forms an outer annular closure body in its lower region, which is during of the flushing process on an annular flange which is arranged in the drain connection and forms the valve seat imposes that between the upper fastening edge of the cuff and the closure body a die Longitudinal expansion of the cuff is inwardly pointing annular fold and that the drainage connection has an air inlet channel below the annular flange, the cross section of which is opposite the air inlets is small.

The existing air inlet openings ensure that the liquid in the flushing pipe is torn off after the rinsing process, so that the safety conditions are met. The cuff ensures that the air inlet openings are properly closed during flushing, and that the air inlet duct below the annular flange allows the air necessary for a good flushing effect in the required λienge enter the rinse water, according to the invention trained device now so that a disturbing noise can not arise. the Air is sucked through a smooth channel that opens below the actual device, so that the air flow is not broken at corners and edges and therefore a louder noise does not arise can. Finally, the water flowing into the flush pipe is not slowed down either, since it is unhindered can fall through the cuff and is not deflected in between. It can also be the pipe system Do not stimulate whistling sounds, as the elastic cuff, which is open at the bottom, is no way to attack it offers.

It is useful if the air inlet duct runs obliquely downwards towards the inside of the pipe, since there is then result in particularly favorable flow conditions for the sucked in air.

If the wall thickness of the annular fold is made so thin that it is attached to the by the water pressure Lays the inner surface of the drainage nozzle, the valve is also sealed at this point, so that a particularly good closure of the air inlet openings is effected in this way. In addition, the ring fold has a sound-absorbing effect, so that the small amounts that may still arise in the air duct Noises cannot reproduce.

Further details of the subject matter of the invention emerge from the description below Drawing. In it shows

1 shows in section an embodiment of a flow-dependent valve according to the invention;

Fig. 2 shows a section along the line II-II of Fig. 1;

3 and 4 each illustrate a combination of a flushing device with a device designed according to the invention, flow-dependent valve.

In Figs. 1 and 2, 1 denotes a cylindrical discharge nozzle, which at its lower end an annular flange 2, which serves as a valve seat, and at its upper end an air opening 3 as a pipe ventilation having. Above the air opening 3 is a fastening edge 4 in the longitudinal direction attached stretchable cuff 5 made of elastic material. The lower part of the same is used as a closure body 9 designed for the valve seat. The inner wall 8 of this closure body 9 runs after funnel-shaped below, and a short extension piece with a smaller diameter extends through the Valve seat leaving an annular space free. In the middle area of the cuff 5 there is an inward one facing annular fold 10 provided with a small wall thickness, which the longitudinal extent of the cuff essentially enables. In addition, spacers 7 are attached to the closure body 9, soft guide the closure body 9 in its movements in the drain connection 1. Below the ring flange a channel 12 opening obliquely downwards into the pipe is provided, which is used for good flushing required small amount of air without essential

ίο lets noise occur.

The valve works in such a way that the closure body 9 of the cuff 5 as soon as this of Rinse water is flowed through, presses on its seat and the annular fold 10 also against the inner wall of the drain port is pressed. As a result, on the one hand, a perfect sealing of the air opening 3 is achieved, on the other hand, through the annular fold 10 pressing against the drainage connection approximately in the channel 12 as a result of the air flowing through The slight noise caused by noise is completely attenuated so that it does not propagate through the pipe can.

In Fig. 3 the valve is shown together with a flushing device. The valve is seated in this arrangement directly under the washer 13.

Fig. 4 shows the assembly of a valve according to the invention with a flushing device 14 of an older type, in which an air opening 16 is also provided for tearing off the column of liquid after the rinsing process.

In the present case this is closed, e.g. B. welded shut, since the valve already has the required Has security hole. It is therefore easily possible to retrospectively convert the valve into an already installed one To install the system.

Certain possible changes are of course conceivable without departing from the scope of the invention. So z. B. be attached to the channel 12 nozzles of different diameters to the To regulate the air flow according to the respective conditions. Furthermore, the inner wall of the channel 12 be designed with sound-insulating material to avoid any small noises directly in the Nip germs.

Of course, the valve is also used for a different purpose than to dampen the noise of toilet flushers usable. For example, it can be connected to normal drain taps, whereby one then takes advantage of the same advantages.

Claims (3)

Patent claims: 1. Flow-dependent valve for a flushing device provided with a pipe interrupter, in particular for a toilet pressure flushing device, consisting of an expandable cuff fastened in the drain nozzle of the flushing device, which during the flushing process is pressed by the flow pressure against the air inlet openings forming the pipe interrupter, characterized in that the expandable cuff (5) in its lower area forms an outer annular closure body (9) which, during the flushing process, rests on an annular flange (2) which is arranged in the drain connection (1) and forms the valve seat, so that between the upper fastening edge (4) of the cuff ( 5) and the closure body (9) an inwardly pointing annular fold (10) allowing the longitudinal extension of the cuff (5) and that the drainage connection (1) is below the ι uyi Annular flange (2) has an air inlet channel (12), the cross section of which is opposite the air inlet openings (3) is low. 2. Valve according to claim 1, characterized in that the air inlet channel (12) for The inside of the pipe runs obliquely downwards. 3. Valve according to claim 1 or 2, characterized in that the wall thickness of the annular fold (10) is thinner than that of the rest of the cuff and that the ring fold under the Apply water pressure to the inner surface of the drainage port (1). Considered publications:
German Patent No. 946 039;
U.S. Patent Nos. 2,217,132, 2,663,309. 1 sheet of drawings ι 009 628/59 10.60