Title:
FLOW PATH SWITCHING VALVE AND AIR CONDITIONER USING SAME
Document Type and Number:
WIPO Patent Application WO/2018/092186
Kind Code:
A1
Abstract:
This flow path switching valve comprises: a first shutoff valve which is provided between a gas pipe that allows a refrigerant to flow in and out and a low-pressure pipe that allows the refrigerant to flow out, and which permits or shuts off the flow of the refrigerant; a second shutoff valve which is provided between the gas pipe and a high-pressure gas pipe that allows the refrigerant to flow in, and which permits or shuts off the flow of the refrigerant; a flow path switching circuit which is connected to at least the gas pipe, the low-pressure pipe, and the first shutoff valve, and switches the connection of the flow paths among the connected gas pipe, low-pressure pipe, and first shutoff valve; and a drive circuit which drives the flow path switching circuit. The drive circuit opens the first shutoff valve by connecting the flow path communicating with the first shutoff valve and the flow path communicating with the low-pressure pipe in the flow path switching circuit so that the refrigerant flowing into the first shutoff valve is drawn into the low-pressure pipe.
Inventors:
KAWAGOE TOMOKAZU (JP)
AZUMA KOJI (JP)
BABA YOHEI (JP)
AZUMA KOJI (JP)
BABA YOHEI (JP)
Application Number:
PCT/JP2016/083802
Publication Date:
May 24, 2018
Filing Date:
November 15, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B41/04; F25B13/00; F25B29/00
Foreign References:
| JPH04258585A | 1992-09-14 | |||
| JPH05322348A | 1993-12-07 | |||
| JP2004347164A | 2004-12-09 | |||
| JPH0132389B2 | 1989-06-30 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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