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Title:
HEAT PUMP CYCLE DEVICE AND VALVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/026486
Kind Code:
A1
Abstract:
This heat pump cycle device is provided with a flow passage switching part (30) which switches a refrigerant flow passage of a refrigerant circulation circuit. The flow passage switching part switches a flow passage between a cooling-side flow passage (105) which during a cooling mode guides the refrigerant flowing out from a heat exchanger to a compressor via a second decompressor and an evaporator, and a heating-side flow passage (104) which during a heating mode guides the refrigerant flowing out from the heat exchanger to the compressor while bypassing the second decompressor and the evaporator. The flow passage switching part has a flow passage switching valve body which opens/closes the cooling-side flow passage. The refrigerant circulation circuit includes: a low-pressure flow passage (106) through which a low-pressure refrigerant decompressed in a first decompressor flows toward the compressor during the heating mode; and a pre-evaporator flow passage (107) between the flow passage switching valve body and the refrigerant inlet of the evaporator. During the heating mode, when the pressure of the refrigerant in the low-pressure flow passage is lower than the pressure of the refrigerant in the pre-evaporator flow passage, the flow passage switching part makes the pre-evaporator flow passage communicate with the low-pressure flow passage while bypassing the evaporator.

Inventors:
KATO Daiki (Showa-cho Kariya-cit, Aichi 61, 〒4488661, JP)
KAWAKUBO Masaaki (Showa-cho Kariya-cit, Aichi 61, 〒4488661, JP)
ITO Tetsuya (Showa-cho Kariya-cit, Aichi 61, 〒4488661, JP)
KAWASE Yasuhiro (INC. 500-20 Minamiyama, Komenoki-cho, Nisshin-cit, Aichi 11, 〒4700111, JP)
SUGIMURA Ryohei (Showa-cho Kariya-cit, Aichi 61, 〒4488661, JP)
MIEDA Hiroshi (Showa-cho Kariya-cit, Aichi 61, 〒4488661, JP)
Application Number:
JP2018/024596
Publication Date:
February 07, 2019
Filing Date:
June 28, 2018
Export Citation:
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Assignee:
DENSO CORPORATION (1-1 Showa-cho, Kariya-city Aichi, 61, 〒4488661, JP)
International Classes:
B60H1/22; B60H1/32; F16K11/048; F25B1/00; F25B41/04
Domestic Patent References:
WO2017022378A12017-02-09
Foreign References:
JP2011235753A2011-11-24
JPH0899526A1996-04-16
JPH06227244A1994-08-16
JP2014228190A2014-12-08
Attorney, Agent or Firm:
YOU-I PATENT FIRM (Nagoya Nishiki City Bldg. 4F 1-6-5, Nishiki Naka-ku, Nagoya-sh, Aichi 03, 〒4600003, JP)
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