Fluid handling – Systems – Multi-way valve unit
Patent
1996-10-11
1998-08-04
Fox, John
Fluid handling
Systems
Multi-way valve unit
13762546, F16K 11072
Patent
active
057879303
ABSTRACT:
A high-low pressure passage switching device in a heating-cooling apparatus comprises an air-tight housing, a flowing passage switching rotor rotatable normally and reversely at a predetermined angle of rotation about a shaft within the air-tight housing, the rotor being provided with a first switching passage and a second switching passage which are open to a first end face and arranged side by side on a circular orbit about the shaft, and also with a third switching passage which is open to a second end face axially opposing the first end face. The third switching passage is communicated with the first switching passage and the second switching passage within the rotor, the first through third switching passages being formed in parallel with the shaft. A first connecting port to be connected with a high pressure gas outlet port of a compressor is formed in a first end wall of the housing, the first end wall being disposed opposite the first end face of the rotor. The first connecting port is connected to a selected one of the first and second switching passages which are rotated normally and reversely in accordance with normal and reverse rotation of the rotor. A second connecting port and a third connecting port to be connected respectively with one and the other ends of a condenser are formed in a second end wall of the housing opposite the second end face of the rotor.
REFERENCES:
patent: 2519574 (1950-08-01), Hall
patent: 3796232 (1974-03-01), Dalton
patent: 5251670 (1993-10-01), Bates
Fox John
Fuji Injector Corporation
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