Title:
REFRIGERATION DEVICE
Document Type and Number:
Japanese Patent JP2015224829
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To shorten a defrost time by simultaneously melting frost of upper and lower heat source-side heat exchangers in a defrosting operation, in a refrigeration device in which the vertically-divided heat source-side heat exchangers are disposed in a top-blown-type heat source unit.SOLUTION: A first heat source-side flow rate adjustment valve capable of adjusting an opening, is connected to a liquid-side of a first heat source-side heat exchanger on an upper side, and a second heat source-side flow rate adjustment valve capable of adjusting an opening, is connected to a liquid-side of a second heat source-side heat exchanger on a lower side. Here, in a defrosting operation for defrosting the first and second heat source-side heat exchangers, the openings of the first and second heat source-side flow rate adjustment valves are controlled to keep a defrost flow rate as a flow rate to allow much refrigerant to flow in the second heat source-side heat exchanger in comparison with that in a cooling operation.
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Inventors:
MINAMI JUNYA
OKA MASAHIRO
OKA MASAHIRO
Application Number:
JP2014110071A
Publication Date:
December 14, 2015
Filing Date:
May 28, 2014
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
F25B13/00; F25B1/00; F25B5/02; F25B6/02; F25B29/00; F25B47/02
Domestic Patent References:
| JP2009228975A | 2009-10-08 | |||
| JPH0355474A | 1991-03-11 | |||
| JPH05332637A | 1993-12-14 | |||
| JPH0571832A | 1993-03-23 | |||
| JP2012207803A | 2012-10-25 | |||
| JPH0914802A | 1997-01-17 | |||
| JP2009228975A | 2009-10-08 | |||
| JPH0355474A | 1991-03-11 |
Foreign References:
| WO2006003860A1 | 2006-01-12 | |||
| WO2006003860A1 | 2006-01-12 |
Attorney, Agent or Firm:
Shinki Global IP Patent Corporation