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Title:
HEAT PUMP DEVICE
Document Type and Number:
Japanese Patent JP2016084984
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To prevent a liquid refrigerant from being sucked to a compressor, while shortening a degassing time of a receiver before switching of an ordinary refrigeration cycle and a defrost cycle.SOLUTION: A refrigerant circuit (30) implements a degassing operation while reducing an opening of an outflow-side expansion valve (52) in comparison with an opening in an ordinary refrigeration cycle before a switching operation, and implements a liquid recovering operation to raise a high pressure of the refrigerant circuit (30) after the lapse of a prescribed time from the start of the degassing operation.SELECTED DRAWING: Figure 6

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Inventors:
O MEIJIN
UKIBUNE MASANORI
Application Number:
JP2014218213A
Publication Date:
May 19, 2016
Filing Date:
October 27, 2014
Export Citation:
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Assignee:
DAIKIN IND LTD
International Classes:
F25B47/02; F25B1/00; F25B43/00
Domestic Patent References:
JP2014152937A2014-08-25
JPH05332625A1993-12-14
JPH05332644A1993-12-14
JPH05264134A1993-10-12
JP2007285635A2007-11-01
JP2001280767A2001-10-10
JPH0194879U1989-06-22
JP2011127792A2011-06-30
JP2014088965A2014-05-15
JP2013011438A2013-01-17
Foreign References:
US20020078699A12002-06-27
Attorney, Agent or Firm:
Maeda patent office