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 (JP)
SAWAMURA NAOKI (JP)
SAWAMURA NAOKI (JP)
Application Number:
PCT/JP2015/072523
Publication Date:
February 16, 2017
Filing Date:
August 07, 2015
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00; F24H1/00
Foreign References:
| JP2003240344A | 2003-08-27 | |||
| JP2012082987A | 2012-04-26 | |||
| JP2005098546A | 2005-04-14 | |||
| JP2004347148A | 2004-12-09 | |||
| JP2011252675A | 2011-12-15 |
Other References:
See also references of EP 3333502A4
Attorney, Agent or Firm:
TAKADA, Mamoru et al. (JP)
Download PDF: