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Patent Searching and Data


Title:
AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/017767
Kind Code:
A1
Abstract:
The purpose of the present invention is to: reduce fluctuations in the discharge temperature of a compressor, such fluctuations corresponding to changes in the opening of an expansion valve; suppress an excessive increase in the discharge temperature of the compressor or hunting; and reduce excessive air-conditioning capacity. In the present invention, a control device is configured as follows: in a case where the difference between an indoor suction temperature and an indoor set temperature is no more than a temperature reference value and the operation frequency of a compressor is no more than a frequency reference value, the opening of a first expansion valve is adjusted so that an outlet degree of superheating of an indoor heat exchanger becomes a target degree of superheating, and the opening of a second expansion valve is adjusted so that the discharge temperature of the compressor becomes a target discharge temperature.

Inventors:
UEHARA, Nobuaki (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2015/071273
Publication Date:
February 02, 2017
Filing Date:
July 27, 2015
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
F25B1/00; F24F11/02
Foreign References:
JP2014240714A2014-12-25
JP2015087065A2015-05-07
JP2007263383A2007-10-11
JP2014190632A2014-10-06
JP2010249452A2010-11-04
Other References:
See also references of EP 3147587A4
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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