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Patent Searching and Data


Title:
AIR-CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/006452
Kind Code:
A1
Abstract:
In order to ensure the oil concentration in a compressor under circumstances where thermo-off conditions are met, this air-conditioning device is equipped with: a refrigerant circuit which is configured by a compressor, an indoor heat exchanger, an expansion valve, and an outdoor heat exchanger being connected by a refrigerant pipe so as to circulate a refrigerant therethrough; and a control device which controls the operational state of the compressor. The control device estimates the oil concentration in the interior of the compressor from the temperature of the gas refrigerant discharged from the compressor and the pressure of the discharged gas refrigerant. If the oil concentration falls below an oil concentration reference value, the control device maintains the compressor in operation even if thermo-off conditions are met.

Inventors:
OTE, Toshinori (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2015/069604
Publication Date:
January 12, 2017
Filing Date:
July 08, 2015
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
F24F11/02; F25B1/00; F25B49/02
Foreign References:
JP2010038503A2010-02-18
JPH06337174A1994-12-06
JPS60251353A1985-12-12
JP2010038503A2010-02-18
Other References:
See also references of EP 3136010A4
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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