Title:
AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2023/139713
Kind Code:
A1
Abstract:
This air conditioner comprises a rectifier circuit and an inter-refrigerant heat exchanger. The rectifier circuit is provided with: a first valve that allows refrigerant in a second pipe to flow from a third point to a fourth point and prevents the reverse flow; a second valve that allows the refrigerant in a fourth pipe to flow from the fourth point to a second point and prevents the reverse flow; a third valve that allows the refrigerant in a third pipe to flow from the third point to a first point and prevents the reverse flow; and a fourth valve that allows the refrigerant in a first pipe to flow from the first point to the second point and prevents the reverse flow. An outdoor unit is provided with: a fifth valve that allows the refrigerant in the third pipe to flow from the first point to a sixth point between the first point and the third valve and prevents the reverse flow; a sixth valve that allows the refrigerant in the first pipe to flow from a fifth point between the first point and the fourth valve to the first point and can prevent the reverse flow; and a fifth pipe that connects the fifth point and the sixth point and causes the refrigerant to flow from the sixth point to the fifth point. The inter-refrigerant heat exchanger exchanges heat between the refrigerant flowing in the fifth pipe and the refrigerant flowing in the pipe that branches off from any of the points between the third valve and the fifth valve, between the fourth valve and the sixth valve, and between the sixth point and the fifth point and is connected between a first switching valve and the suction side of a compressor.
Inventors:
MIZUNO YUKI (JP)
HATOMURA TAKESHI (JP)
MIYAWAKI KOSUKE (JP)
NISHIO JUN (JP)
MOTOMURA YUJI (JP)
WASHIYAMA HIROKI (JP)
HATOMURA TAKESHI (JP)
MIYAWAKI KOSUKE (JP)
NISHIO JUN (JP)
MOTOMURA YUJI (JP)
WASHIYAMA HIROKI (JP)
Application Number:
PCT/JP2022/001911
Publication Date:
July 27, 2023
Filing Date:
January 20, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00; F25B13/00
Domestic Patent References:
| WO2012104893A1 | 2012-08-09 | |||
| WO2014054120A1 | 2014-04-10 | |||
| WO2015125219A1 | 2015-08-27 |
Foreign References:
| JP2009198099A | 2009-09-03 | |||
| JP2003075026A | 2003-03-12 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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