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Title:
HEAT PUMP SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/026007
Kind Code:
A1
Abstract:
An output temperature Thw is obtained, the output temperature Thw being the temperature of a heating medium flowing out from a heating heat exchanger where heat is exchanged between a refrigerant compressed by a compressor and a liquid heating medium (step S1). A base frequency is calculated in accordance with the present outside temperature Ta and the temperature difference obtained by subtracting the present output temperature Thw from a desired output temperature (step S3). A first positive correction value is added to a correction frequency when the temperature difference is larger than a first positive reference value and the change in the output temperature Thw over time is smaller than a reference (step S6). The operation frequency of the compressor is controlled in accordance with the sum of the base frequency and the correction frequency (step S10).

Inventors:
HIROSAKI, Hiroki (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
SAWAMURA, Naoki (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2015/072523
Publication Date:
February 16, 2017
Filing Date:
August 07, 2015
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
F25B1/00; F24H1/00
Foreign References:
JP2003240344A2003-08-27
JP2012082987A2012-04-26
JP2005098546A2005-04-14
JP2004347148A2004-12-09
JP2011252675A2011-12-15
Other References:
See also references of EP 3333502A4
Attorney, Agent or Firm:
TAKADA, Mamoru et al. (Takada, Takahashi & Partners Konwa Bldg. 7F, 12-22 Tsukiji 1-chome, Chuo-k, Tokyo 45, 〒1040045, JP)
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