DK150116B - MIXTURE VALVE WITH REVERSE BETWEEN TWO OUTPUT CHANNELS - Google Patents

Description

150116

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a mixing valve having two outlet ducts leading to a drainage pipe and to a shower valve interconnected with a valve, respectively, and in which a duct arranged axially 5 is arranged in the mixing valve. the outlet duct leading to the shower in such a way that said duct and the shower outlet duct at open shower valve act as an ejector, and wherein the duct leading to the drainage tube communicates with the suction side of said ejector and extends transversely the said 10 channel and shower run channel.

A mixing valve of this kind is known from the specification of US Patent No. 3,736,959. According to this prior art, the mixing valve contains a switch with a movable valve body. This venti body is tubular, and the duct therein constitutes the duct axially aligned with the outlet duct leading to the shower. The tubular valve body projects with one end into the outlet duct leading to the shower and when the shower is supplied with water, i.e. when the associated shower valve is open, the water fed to the shower will flow into the shower channel around the end of the tubular valve body projecting therein. This results in the ejector effect and consequently water is simultaneously prevented from flowing through the outlet channel connected to the drain pipe. When the shower valve according to this prior art is closed, thereby interrupting the water supply 25 to the shower, the movable valve body is rescheduled as a result of the increase in pressure in the duct leading to the shower, thereby moving the movable valve body in contact with a charge in the mixing valve, whereby the duct through the movable valve body is closed, and now the water only has the ability to flow to the drain pipe through the associated channel.

The mixing valve according to the present invention is characterized in that said channel is funnel-shaped and together with the shower outlet channel and the channel leading to the drain pipe is formed in a common integral part of the mixing valve, and the channel leading to the discharge tube, extending between the outlet end of the funnel-shaped channel and the inlet end of the shower outlet channel. Hereby, the prior art mixing valve is simplified, avoiding the movable valve body, and the mixing valve is further simplified in that both the funnel-shaped channel, the channel leading to the drainpipe and the channel leading to the shower are formed in one and the same. same part.

The outlet end of the funnel-shaped duct is admittedly located at a distance from the inlet end of the shower outlet duct 5, but thanks to the funnel shape, the flow of water at an open shower valve is provided at such a speed that the required ejector effect is obtained in the duct leading to the drain pipe, so that there is no outflow through this at open shower vent.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be explained in more detail in connection with an embodiment and with reference to the drawing, which shows a section through a mixing valve provided with a switch according to the invention.

In the valve shown in the figure, the regulated amount of water flows through the opening or channel 1. This channel narrows 15 gently into a funnel 2 through which the water can proceed either through a channel 3 to a drain pipe or through a channel 4 to a hand shower. As to the other parts of the mixing valve and their function, reference is made to the specification of Finnish Patent No. 58,547.

The function of the switch is as follows: 20 The hand shower includes a shut-off valve. If the shut-off valve is opened, i.e. that the channel 4 is open, the water flowing through the channel 1 achieves a greater velocity at the funnel 2 and, under the effect of this increased velocity, enters the channel 4, so that no water flows into the channel 3. If the valve of the hand shower 25 is shut off again, the flow in the channel 4 and the water flowing out through the funnel 2 must flow into the channel 3. The end of the channel 3, seen in the axial direction of the funnel 2, is circular and considerably wider than the funnel. As can be seen in the figure, the switch assembly according to the invention is arranged in the main part 30 5 and the manufacture thereof takes place during the molding of the main part 5, so the construction of the switch does not require additional parts or material. In addition, the construction has the advantage of taking up very little space in the main part 5.

It will be understood, of course, that the structure and arrangement of the switch may be varied in many different ways, e.g. depending on the type of mixing valve itself, without departing from the principle of the invention.