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Patent Searching and Data


Title:
REFRIGERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/026115
Kind Code:
A1
Abstract:
A compressor control unit (83) controls an operation frequency (FQ) of a compressor (21a) so that the temperature of a refrigerant suctioned into the compressor (21a) in a cooling operation becomes a desired evaporation temperature (Te). A desired-temperature-setting unit (84): sets the desired evaporation temperature (Te) to a reference temperature (Teref) that is lower than an internal setting temperature (Tset) from when a cooling operation starts until a pull-down period (PD) for lowering an internal temperature (Tr) elapses; and corrects the desired evaporation temperature (Te) so that the desired evaporation temperature (Te) is higher than the reference temperature (Teref) when a frequency index value (FQi) depending on the operation frequency (FQ) of the compressor (21a) over a period when a usage-side unit (12) is in a cooling state is greater than a preset reference value (FQref) after the pull-down period (PD) has elapsed.

Inventors:
KITAO, Takuya
UENO, Akitoshi
KITA, Kouichi
Application Number:
JP2016/003624
Publication Date:
February 16, 2017
Filing Date:
August 05, 2016
Export Citation:
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Assignee:
DAIKIN INDUSTRIES, LTD. (Umeda Center Building, 4-12 Nakazaki-nishi 2-chome, Kita-ku, Osaka-sh, Osaka 23, 〒5308323, JP)
International Classes:
F25B1/00; F25D11/00
Domestic Patent References:
WO2014103028A12014-07-03
Foreign References:
JP2010175203A2010-08-12
JP2007225155A2007-09-06
JPH11304344A1999-11-05
JP2008070015A2008-03-27
Other References:
See also references of EP 3333503A4
Attorney, Agent or Firm:
MAEDA & PARTNERS (Shin-Daibiru Bldg. 23F, 2-1 Dojimahama 1-chome, Kita-ku, Osaka-sh, Osaka 04, 〒5300004, JP)
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