Mixing valve arrangement
AssigneeFriedrich Grohe Armaturenfabrik GmbH & Co.
InventorHarro Kiendl
Life of this patent
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Abstract
A mixing valve arrangement for producing temperature controlled water wherein an electromagnetically actuatable supply valve is coupled in each of the hot and cold water supply lines is described. Electronic control loop circuits generate a temperature control signal from both a temperature preselector and a temperature detector and a volume control signal from both a volume preselector and a mixed water flow volume detector. An electronic decoupling circuit is interposed between the two control loop circuits and the valve actuating circuits to derive control signals representative of the degree of opening of the two supply valves from the temperature and volume control signals.
Claims4
A valve arrangement for the production of temperature controlled water at an outlet by mixing hot and cold water from hot and cold water supply lines, said arrangement comprising:
- a first electromagnetically actuatable supply valve coupled between said hot water supply line and said outlet;
- a second electromagnetically actuatable supply valve coupled between said cold water supply line and said outlet;
- said first and second supply valves being independently actuatable;
- first control means for actuating said first supply valve in response to a first control signal;
- second control means for actuating said second supply valve in response to a second control signal;
- temperature detecting means for measuring the temperature of mixed water of said outlet;
- volume detecting means for measuring the flow volume of mixed water at said outlet;
- temperature preselecting means for preselecting a desired temperature of said mixed water;
- volume preselecting means for preselecting a desired flow volume of said mixed water;
- first control loop means having inputs coupled to said temperature detecting means and said temperature preselecting means for generating a temperature control signal in response to said detected temperature and said preselected temperature;
- second control loop means having inputs coupled to said volume preselecting means and said volume detecting means for generating a volume control signal in response to said preselected value and said measured flow volume;
- and
- decoupling means for generating said first and second control signals in response to said temperature control signal and said volume control signal.
Dependencies are inferred from the claim text.