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Title:
COOLANT QUANTITY INSUFFICIENCY SENSING DEVICE AND REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/187790
Kind Code:
A1
Abstract:
A refrigeration cycle device (10) is provided with the following: a compressor (11) that comprises a compression mechanism (11a) which takes in, compresses, and discharges a coolant; a radiator (12) that causes the coolant discharged from the compressor (11) to release heat; a decompressor (14) that decompresses the coolant which has been made to radiate heat in the radiator; evaporators (15, 20) that cause the coolant decompressed by the decompressor (14) to absorb heat and evaporate; and an accumulator (21) that separates the gas and liquid of the coolant which has been caused to absorb heat in the evaporators (15, 20), that stores the separated liquid-phase coolant in the interior thereof, and that causes the separated gas-phase coolant to flow out to the intake side of the compressor (11) together with a lubricating oil mixed in with the liquid-phase coolant. A coolant detection device that detects insufficiency of a coolant in the refrigeration cycle device is provided with a determination unit (40) that determines whether or not the quantity of the coolant is insufficient on the basis of the temperature of heating elements (11b, 50) cooled by the coolant that flows out from the accumulator (21) and flows into the compression mechanism (11a).

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Inventors:
KAWANO HIROAKI (JP)
TANIHATA TAKUYA (JP)
Application Number:
PCT/JP2017/008700
Publication Date:
November 02, 2017
Filing Date:
March 06, 2017
Export Citation:
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Assignee:
DENSO CORP (JP)
International Classes:
F25B49/02
Foreign References:
JPH0674496A1994-03-15
JPH03236571A1991-10-22
JPS5882644U1983-06-04
JP2010106807A2010-05-13
JP2010121449A2010-06-03
JP2006177665A2006-07-06
JPS63290353A1988-11-28
JP2016180582A2016-10-13
JP2008045792A2008-02-28
JPH03172590A1991-07-25
JP2010210098A2010-09-24
JPH08128765A1996-05-21
JP2005043008A2005-02-17
JP2014055980A2014-03-27
Attorney, Agent or Firm:
JIN Shunji (JP)
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