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Patent Searching and Data


Title:
AIR-CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/029695
Kind Code:
A1
Abstract:
An air-conditioning device which melts a large amount of frost deposited thereon while maintaining the proper operation of a compressor by setting the defrosting operation time according to the low pressure of the compressor. This air-conditioning device has: a refrigerant circuit which has a compressor, a refrigerant flow path switching device, a heat-source-side heat exchanger, a throttle device, and a use-side heat exchanger being connected by refrigerant pipes, and configures a refrigeration cycle; a pressure sensor which detects the pressure on the intake side of the compressor; and a control device which, during defrosting operation, controls the refrigerant flow path switching device and supplies the compressed refrigerant from the compressor to the heat-source-side heat exchanger, compares the detection value of the compressor sensor and a first threshold value, and changes defrosting operation time on the basis of the comparison result.

Inventors:
NAJIMA, Kohei (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2015/072966
Publication Date:
February 23, 2017
Filing Date:
August 14, 2015
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; F24F11/02; F25B1/00
Foreign References:
JP2001272144A2001-10-05
JPH11337234A1999-12-10
US5651263A1997-07-29
JPH08136068A1996-05-31
JP2008138921A2008-06-19
JPS5927170A1984-02-13
JPS6246166A1987-02-28
JP2005037052A2005-02-10
JP2013217506A2013-10-24
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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