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Patent Searching and Data


Title:
EJECTOR-TYPE REFRIGERATION CYCLE
Document Type and Number:
WIPO Patent Application WO/2018/016219
Kind Code:
A1
Abstract:
An ejector-type refrigeration cycle is provided with: a compressor; a radiator; an ejector; an evaporator; a diversion passage for diverting refrigerant that has released heat in the radiator away from the nozzle part of the ejector and guiding the refrigerant to the upstream side of the refrigerant outlet of the evaporator; a decompression unit (34a) for decompressing the refrigerant flowing into the evaporator via the diversion passage; and a circuit-switching valve (13) for opening and closing a first refrigerant passage (30b) for guiding the refrigerant to the nozzle part, and opening and closing a second refrigerant passage (30c) for guiding the refrigerant to the diversion passage. The circuit-switching valve is constituted from a mechanical mechanism for closing the first refrigerant passage (30b) or the second refrigerant passage (30c) when the other refrigerant passage is opened. The circuit-switching valve opens the second refrigerant passage (30c) when the before-after pressure difference (ΔPc) obtained by subtracting the refrigerant pressure on the intake side of the compressor from the refrigerant pressure on the discharge side is lower than a preset reference before-after pressure difference (KΔPc).

Inventors:
FUKUSHIMA Ryu (C/O DENSO CORPORATION, 1-1 Showa-ch, Kariya-city Aichi 61, 〒4488661, JP)
HOTTA Teruyuki (C/O DENSO CORPORATION, 1-1 Showa-ch, Kariya-city Aichi 61, 〒4488661, JP)
IKEGAMI Makoto (C/O DENSO CORPORATION, 1-1 Showa-ch, Kariya-city Aichi 61, 〒4488661, JP)
Application Number:
JP2017/021414
Publication Date:
January 25, 2018
Filing Date:
June 09, 2017
Export Citation:
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Assignee:
DENSO CORPORATION (1-1 Showa-cho, Kariya-city Aichi, 61, 〒4488661, JP)
International Classes:
F25B41/04; B60H1/22; F16K31/126; F25B1/00; F25B43/00
Foreign References:
JP2005037093A2005-02-10
JP4078901B22008-04-23
JPS5271152U1977-05-27
JP2004053028A2004-02-19
Attorney, Agent or Firm:
JIN Shunji (6th Floor, Takisada Bldg. 2-13-19, Nishiki, Naka-k, Nagoya-city Aichi 03, 〒4600003, JP)
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