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Title:
HEAT PUMP CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/198564
Kind Code:
A1
Abstract:
Based on a determination at step 115 as to whether an intake refrigerant temperature Ts is at least -32°C, and decisions at steps 145 and 150, either a normal operation or a speed control operation is performed. From a state where the intake refrigerant temperature Ts is less than -34°C, which is when a speed reduction operation is performed, if the intake refrigerant temperature Ts reaches at least -32°C but has not previously reached -20°C, a limited speed operation is performed at step 155. During the limited speed operation, a maximum allowed rotational speed of a compressor (11) is limited to a predetermined speed lower than that of the normal operation. Under different circumstances, if the intake refrigerant temperature reaches at least -32°C, the normal operation is performed at step 160.

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JP3332012[Title of Invention] Air Conditioner
Inventors:
TAHARA TOSHIHIRO (JP)
VITALI DOMENICO (IT)
VERA EMILIO (IT)
Application Number:
PCT/JP2015/003056
Publication Date:
December 30, 2015
Filing Date:
June 18, 2015
Export Citation:
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Assignee:
DENSO CORP (JP)
DENSO THERMAL SYSTEMS SPA (IT)
International Classes:
F25B29/00; F25B5/04; F25B49/02
Foreign References:
US6293123B12001-09-25
US20050194125A12005-09-08
JP2001324237A2001-11-22
JP2011140291A2011-07-21
Attorney, Agent or Firm:
KIN, Junhi (Takisada Bldg. 2-13-19, Nishiki, Naka-ku, Nagoya-cit, Aichi 03, JP)
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