REFRIGERATION CYCLE DEVICE

WIPO Patent Application WO/2017/138243

A1

A refrigeration cycle device equipped with: a branched pipe (81) for cooling that forms a bypass for causing some of the coolant between an outdoor heat exchanger and an indoor heat exchanger in a refrigeration cycle (45) to flow to the intake side of a compressor; a cooling jacket (83) that cools a power element (85) provided in an electrical circuit for controlling the operation of the compressor (13), by using some of the coolant, and is provided along the branched pipe (81) for cooling; a throttling valve (87) provided on only the upstream side of the cooling jacket (83) in the branched pipe (81) for cooling; an element temperature detector (91) for detecting the temperature of the power element (85); and a control unit (89) for executing an opening control or closing control of the throttling valve (87) on the basis of the detected temperature of the element temperature detector (91). As a result, it is possible to prevent excessive cooling of a power element and prevent condensation from forming thereon, while simplifying the configuration thereof and suppressing a decline in operating efficiency.

MITOMA KEISUKE (JP)
ENYA ATSUSHI (JP)
ISOZUMI SHINICHI (JP)
KURACHI MASAYA (JP)
YOSHIDA JUNICHI (JP)

PCT/JP2016/087008

August 17, 2017

December 13, 2016

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MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD (JP)

F25B1/00

JP2008057856A	2008-03-13
JPS61133770U	1986-08-20
JP2008057875A	2008-03-13
JP2005207719A	2005-08-04
JP2009198081A	2009-09-03
JP2010266132A	2010-11-25
JPH06159738A	1994-06-07
JPS5650966U	1981-05-06
JP2014129960A	2014-07-10
JPS6176267U	1986-05-22
JPH08189719A	1996-07-23

See also references of EP 3370014A4

SAKAI INTERNATIONAL PATENT OFFICE (JP)

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