Automatic temperature and humidity regulation – Mixing fluid of dissimilar temperature – Having oscillating or reciprocating valve
Patent
1990-11-16
1992-05-05
Tapolcai, William E.
Automatic temperature and humidity regulation
Mixing fluid of dissimilar temperature
Having oscillating or reciprocating valve
236 1223, G05D 2313
Patent
active
051100444
DESCRIPTION:
BRIEF SUMMARY
The invention refers to a sanitary mixing valve with thermostatic regulation, with an actuation element, with a stationary valve seat disc, with a disc packet displaceable on the valve seat disc to control the flow and with a temperature-dependent control element, wherein the valve seat disc has a cold water inlet port and a hot water inlet port, wherein the disc packet consists of a lower guide disc, an upper guide disc and a control disc which is provided between the lower guide disc and the upper guide disc, wherein the lower guide disc and the control disc have passages communicating with the cold water inlet port and the hot water inlet port of the valve seat disc, and the upper guide disc has pressure compensation chambers communicating with the passages of the control disc, and wherein the control disc can be set for the purpose of temperature control by means of the actuation element relative to the guide discs to a starting position which determines temperature and, for the purpose of temperature regulation, can be controlled by means of the temperature-dependent control element.
In the known sanitary mixing valve, on which this invention is based (cf. DE-OS 35 25 052), the temperature-dependent control element is located essentially outside the disc packet which effects flow and temperature control and regulation in the water chamber for the emerging mixed water, although it acts on the spring-loaded control disc located between the guide discs of the disc packet and forms a functional and structural unit with the disc packet. This goes to prove that the temperature control via the temperature-dependent control element is relatively slow.
The object underlying this invention, is therefore to improve the known sanitary mixing valve, on which this invention is based, in such a way that the control disc is more quickly and sensitively controlled via the temperature-dependent control element so that the preset mixed water temperature is kept constant without perceptible fluctuations.
The sanitary mixing valve according to this invention, in which valve the object deduced and explained above is achieved, is characterized in that in the control disc at least one mixing chamber is provided which communicates with the passages of the lower guide disc and/or with the pressure compensation chambers of the upper guide disc and in that the temperature-dependent control element is located in the mixing chamber of the control disc and/or in a cavity of the control disc which cavity communicated with the mixing chamber and in that partial flows of the cold water and the warm water enter into the mixing chamber and the mixed water flows around the control element. Preferably, one mixing chamber communicating with the passages of the lower guide disc and one mixing chamber communicates with the pressure compensation chambers of the upper guide disc are provided in the control disc, the two mixing chambers lead into a cavity of the control disc and the temperature-dependent control element is placed in the mixing chambers and/or in the cavity of the control disc.
In the sanitary mixing valve according to this invention at least a partial flow of the cold and hot water is mixed in the control disc itself and the mixed water is directly brought to the temperature-dependent control element over a short path so that in the case of deviations of the mixed water temperature from the preset mixed water temperature, a control of the control disc relative to the two guide discs is immediately effected, initiated by the control element.
In the following, the invention and advantages achieved by the invention are explained in connection with an exemplary embodiment reproduced in the drawing: the drawing shows in:
FIG. 1 a longitudinal section through a preferred embodiment of a sanitary mixing valve according to the invention,
FIG. 1a is an exploded drawing, the sanitary valve seat disc, the lower guide disc, the control disc, the temperature-dependent control element and the upper guide disc of the sanitary mixing valve acc
REFERENCES:
patent: 4349149 (1982-09-01), Humpert
patent: 4381073 (1983-04-01), Gloor
patent: 4407444 (1983-10-01), Knebel et al.
patent: 4674678 (1987-06-01), Knebel et al.
patent: 4700885 (1987-10-01), Knebel
patent: 4738393 (1988-04-01), Bergmann et al.
patent: 4819867 (1989-04-01), Delpla et al.
Ideal Standard GmbH
Tapolcai William E.
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