OUTDOOR UNIT AND REFRIGERATION CYCLE DEVICE EQUIPPED WITH SAME

Title:

OUTDOOR UNIT AND REFRIGERATION CYCLE DEVICE EQUIPPED WITH SAME

Document Type and Number:

WIPO Patent Application WO/2021/192275

Kind Code:

A1

Abstract:

Provided is an outdoor unit (2, 2A, 2B) that is for a refrigeration cycle device (1, 1A, 1B) provided with a refrigerant circuit in which a refrigerant circulates. The outdoor unit includes a compressor (10) which compresses the refrigerant and a condenser (20) which condenses the refrigerant discharged from the compressor, and is provided with a main flow channel which constitutes part of the refrigerant circuit, and a bypass flow channel which guides, to an intake port of the compressor, some of the refrigerant that flows out from the condenser. The bypass flow channel includes a detection unit (70) which detects a lack of refrigerant sealed in the refrigerant circuit. The detection unit includes heater (72) which heats the refrigerant flowing through the bypass flow channel, a first temperature sensor (73) which detects the temperature of the refrigerant not yet heated by the heater, a second temperature sensor (74) which detects the temperature of the refrigerant which has been heated by the heater, and a control device (100) which uses the temperatures detected by the first temperature sensor and the second temperature sensor to detect a lack of refrigerant sealed in the refrigerant circuit. The main flow channel includes a first flow channel which is disposed downstream of the condenser. The bypass flow channel has a connection end part (86A) which is connected to the first flow channel and a rising part (86B) which extends upward from the connection end part.

Inventors:

SATO HIROKI (JP)
ABASTARI (JP)
ISHIKAWA TOMOTAKA (JP)
TSUKIYAMA RYO (JP)

Application Number:

PCT/JP2020/014229

Publication Date:

September 30, 2021

Filing Date:

March 27, 2020

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

F25B41/00; F25B1/00; F25B49/02

Foreign References:

JP2011122767A	2011-06-23
JP2005282885A	2005-10-13
JP2018197616A	2018-12-13
JPH05346271A	1993-12-27
JPH0642831A	1994-02-18
JPS63169461A	1988-07-13