Title:
EXPANSION VALVE AND REFRIGERATION CYCLE
Document Type and Number:
WIPO Patent Application WO/2017/145619
Kind Code:
A1
Abstract:
Provided is an expansion valve which is intended for use in a refrigeration cycle capable of switching between a first refrigeration circuit, in which a refrigerant flows through a first heat exchanger and a second heat exchanger in that order, and a second refrigeration circuit, in which the refrigerant flows through the second heat exchanger and the first heat exchanger in that order. The expansion valve causes the refrigerant that has flowed out of the first heat exchanger or the second heat exchanger to flow into the other heat exchanger through decompression expansion. A first opening section (1aa) and a second opening section (1ab) are formed in the expansion valve. The expansion valve is provided with: a body section (1a) in which formed is a refrigerant channel (1az) including a constriction channel (1ag) that depressurizes the refrigerant that has flowed in from the first opening section or the second opening section; a valve body (1c) which is disposed within the body section and which adjusts the cross-sectional area of the channel in the constriction channel; and regulation members (1za-1zd). The regulation members regulate the flow of the refrigerant so that the pressure A of the refrigerant in the first refrigeration circuit acting on the valve body and the pressure B of the refrigerant in the second refrigeration circuit acting on the valve body both act in the direction of closing the valve body.
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Inventors:
HASHIMURA NOBUYUKI (JP)
KATO YOSHIKI (JP)
TAKEUCHI MASAYUKI (JP)
KATO YOSHIKI (JP)
TAKEUCHI MASAYUKI (JP)
Application Number:
PCT/JP2017/002494
Publication Date:
August 31, 2017
Filing Date:
January 25, 2017
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F25B41/06; F16K31/68; F25B13/00
Foreign References:
| JPH0961017A | 1997-03-07 | |||
| JPS61223467A | 1986-10-04 | |||
| JPH0989419A | 1997-04-04 | |||
| JPS63263365A | 1988-10-31 | |||
| US5836349A | 1998-11-17 |
Attorney, Agent or Firm:
YOU-I PATENT FIRM (JP)
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