Control method for four-way valve of multiple heat pump

Details Control method for four-way valve of multiple heat pump Control method for four-way valve of multiple heat pump

2007-02-27

2007-02-27

Ali, Mohammad M. (Department: 3744)

Refrigeration

Processes

Compressing, condensing and evaporating

C062S160000

Reexamination Certificate

active

11063581

ABSTRACT:
Disclosed herein is a control method for four-way valves of a multiple heat pump. In the control method, if even at least one of four-way valves of respective outdoor units is not switched to a desired mode upon switching of all of the four-way valves to the desired mode, the other four-way valves, switched to the desired mode, is switched to an opposite direction of the desired mode, and then all of the four-way valves are switched again to the desired mode, thereby simply and rapidly correcting switching error of the four-way valves, resulting in normal operation of the multiple heat pump.

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