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Title:
AIR-CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/073621
Kind Code:
A1
Abstract:
An air-conditioning device comprising: a main circuit in which a compressor, a load-side heat exchanger, a first decompression device, and a plurality of parallel heat exchangers are connected by means of piping; bypass piping for diverting a portion of the refrigerant discharged from the compressor; a flow path switching unit for connecting a parallel heat exchanger being defrosted to the bypass piping; a plurality of flow rate adjustment devices for adjusting the flow rate of the refrigerant flowing through the plurality of parallel heat exchangers; and a control device. The air-conditioning device has a heating operation mode and a heating/defrosting operation mode. During the heating/defrosting operation mode or the heating operation mode after execution of the heating/defrosting operation mode, the control device controls the flow rate adjustment devices so as to adjust the flow rate of the refrigerant flowing in the parallel heat exchangers in accordance with the frost accumulation state of a parallel heat exchanger that, among the plurality of parallel heat exchangers, functions as an evaporator.

Inventors:
WATANABE, Kazuya (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
IKEDA, Soshi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
ISHIMURA, Shohei (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
NAKAO, Hideto (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2018/008814
Publication Date:
April 18, 2019
Filing Date:
March 07, 2018
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
F25B47/02; F25B5/02; F25B13/00
Domestic Patent References:
WO2013128897A12013-09-06
WO2014083867A12014-06-05
WO2014128831A12014-08-28
WO2017006596A12017-01-12
Foreign References:
JP2008157558A2008-07-10
JP2012063033A2012-03-29
JPS5528459A1980-02-29
JP2008249236A2008-10-16
JP2016211839A2016-12-15
US20170219264A12017-08-03
JPS54124356A1979-09-27
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (East 8F, TORANOMON TWIN BLDG. 10-1 Toranomon 2-chome, Minato-k, Tokyo 01, 〒1050001, JP)
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