Title:
REFRIGERATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/004112
Kind Code:
A1
Abstract:
The present invention addresses the problem of suppressing, in a refrigerating device provided with a differential pressure-type expansion valve in which the valve opening degree varies according to a pressure difference, defects that are generated when the degree of refrigerant superheating applied to a compressor of the refrigerating device becomes greater than a suitable value or when the degree of refrigerant superheating becomes less than the suitable value. This refrigeration device (10) has a refrigerant circuit (11) configured such that: a refrigerant is circulated in the order of a compressor (31), an outdoor heat exchanger (32) which is a radiator, a differential pressure-type expansion valve (33), and an indoor heat exchanger (21) which is an evaporator; and the flow rate of the refrigerant varies according to a valve opening degree that varies according to the pressure difference between a refrigerant inlet and a refrigerant outlet of the differential pressure-type expansion valve (33). The refrigeration device (10) changes the wind amount of an outdoor fan (32) which is a radiator fan, and/or the wind amount of an indoor fan (22) which is an evaporator fan when the pressure difference is outside a predetermined pressure range, and thereby adjusts the pressure difference to approach the predetermined pressure range and changes the valve opening degree of the differential pressure-type expansion valve (33).
Inventors:
KATOU KURUMI
TAKEMOTO KEIGO
HARAGUCHI YUU
YAMASHITA HONAMI
TAKEMOTO KEIGO
HARAGUCHI YUU
YAMASHITA HONAMI
Application Number:
PCT/JP2018/023975
Publication Date:
January 03, 2019
Filing Date:
June 25, 2018
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F25B41/06; F25B1/00; F25B49/02
Domestic Patent References:
| WO2017098670A1 | 2017-06-15 |
Foreign References:
| JP2017072352A | 2017-04-13 | |||
| JP2008025862A | 2008-02-07 | |||
| JP2012072920A | 2012-04-12 | |||
| JP2014119154A | 2014-06-30 | |||
| JP2007115096A | 2007-05-10 | |||
| JP2012067958A | 2012-04-05 | |||
| JP2004218918A | 2004-08-05 |
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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