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Patent Searching and Data


Title:
AIR CONDITIONER AND OPERATION CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2014/080496
Kind Code:
A1
Abstract:
In the present invention, the frequency of a compressor is controlled so that during a cooling operation the evaporation temperature becomes a target evaporation temperature, and in a case where refrigerant stagnancy is detected in a condenser of an outdoor unit during a cooling operation, a stagnancy elimination operation is implemented. The stagnancy elimination operation includes the following: stagnancy suppression control in which, in order to increase the condenser refrigerant circulation volume, the target evaporation temperature is lowered so as to be within a range such that the evaporator does not freeze; and stagnancy avoidance priority control that is implemented in a case where stagnancy cannot be eliminated by the implementation of the stagnancy suppression control, and that controls the opening of an expansion valve in the open direction to further lower the target evaporation temperature and further increases the refrigerant circulation volume.

Inventors:
AOYAMA YUTAKA (JP)
Application Number:
PCT/JP2012/080350
Publication Date:
May 30, 2014
Filing Date:
November 22, 2012
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
AOYAMA YUTAKA (JP)
International Classes:
F25B1/00; F25B5/02; F25B13/00; F25B39/04
Foreign References:
JP2007078242A2007-03-29
JP3096687B22000-10-10
JP3096687B22000-10-10
Other References:
See also references of EP 2924368A4
Attorney, Agent or Firm:
KOBAYASHI, Hisao et al. (JP)
Hisao Kobayashi (JP)
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