High speed defrosting heat pump

Details High speed defrosting heat pump High speed defrosting heat pump

2011-08-30

2011-08-30

Ali, Mohammad (Department: 3784)

Refrigeration

Automatic control

Preventing, removing or handling atmospheric condensate

C062S234000, C062S324100, C062S324600

Reexamination Certificate

active

08006506

ABSTRACT:
Disclosed is a high speed defrosting heat pump having a closed refrigerant circulation loop including a four-way valve so as to conduct cooling and heating operations by switching a refrigerant-circulating direction by means of the four-way valve. A three-way valve is disposed on a refrigerant pipe connected between a compressor and the four-way valve, and a bypass pipe is branched off from the three-way valve in such a manner as to be connected to a refrigerant pipe connected between an expansion valve and a exterior heat exchanger, such that the hot gas discharged from the compressor is introduced to the exterior heat exchanger via the bypass tube by the control of the three-way valve.

REFERENCES:
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patent: 2004/0000399 (2004-01-01), Gavula
patent: 2004/0134205 (2004-07-01), Park et al.
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patent: 2005/0044861 (2005-03-01), Cho
patent: 2006/0037344 (2006-02-01), Cho et al.
patent: 2006/0086496 (2006-04-01), Gavula
patent: 10-071850 (1998-03-01), None
patent: 10-1998-073107 (1998-11-01), None
patent: 10-2000-074465 (2000-12-01), None

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