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 (JP)
Application Number:
PCT/JP2015/071273
Publication Date:
February 02, 2017
Filing Date:
July 27, 2015
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00; F24F11/02
Foreign References:
| JP2014240714A | 2014-12-25 | |||
| JP2015087065A | 2015-05-07 | |||
| JP2007263383A | 2007-10-11 | |||
| JP2014190632A | 2014-10-06 | |||
| JP2010249452A | 2010-11-04 |
Other References:
See also references of EP 3147587A4
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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