Title:
FREEZER
Document Type and Number:
WIPO Patent Application WO/2019/017350
Kind Code:
A1
Abstract:
Provided is a highly reliable freezer capable of cooling the inside of a heat source unit casing by using a coolant, and capable of suppressing the occurrence of liquid compression caused by the supply of coolant to a heat exchanger for cooling the inside of the casing. An air-conditioning device (10) equipped with: a heat source unit (100); a use unit (300) which has a use-side heat exchanger (310) and, together with the heat source unit, forms a coolant circuit (50); and a control unit. The heat source unit has: a compressor (110); a heat source-side heat exchanger (140) for performing a heat exchange between a coolant and a heat source; a casing; a cooling heat exchanger (160) for cooling the inside of the casing by receiving a coolant supply; and a valve (162) for switching between supplying and not supplying the coolant to the cooling heat exchanger. Before supplying the coolant to the cooling heat exchanger, the control unit, which controls the opening/closing of the valve, determines whether the coolant heading from the cooling heat exchanger to the compressor is wet or not when being supplied, and determines whether or not to open the valve on the basis of the determination results.
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Inventors:
KOJIMA AKIHARU
Application Number:
PCT/JP2018/026763
Publication Date:
January 24, 2019
Filing Date:
July 17, 2018
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F25B1/00; F25B13/00
Domestic Patent References:
| WO2011077720A1 | 2011-06-30 |
Foreign References:
| JP2001099512A | 2001-04-13 | |||
| JP2015218939A | 2015-12-07 | |||
| JPH0849884A | 1996-02-20 |
Other References:
See also references of EP 3657097A4
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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