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Patent Searching and Data


Title:
REFRIGERATING DEVICE
Document Type and Number:
Japanese Patent JP2001133050
Kind Code:
A
Abstract:

To improve reliability and comfortability of a system by flowing a flow amount of a refrigerant optimum to a heat-exchanger operating as an evaporator during starting of a compressor or after completion of reverse cycle defrosting operation.

An evaporative temperature computing means estimates an optimum evaporative temperature after a lapse of a given time starting from a present time based on the suction temperatures of an air-cooled heat-exchanger 3 on the heat source side and an air-cooled heat-exchanger 5 on the utilization side during starting of a compressor 1 and a control means performs control of the opening of a motor-driven expansion valve 4 in a manner to reach a target value in a given time with an evaporative temperature determined by the evaporative temperature computing means forming a target value, the two means being annexed. During starting of the compressor 1 or after completion of a reverse cycle defrosting operation, an optimum evaporative temperature after a lapse of a given time starting from a time when it is estimated based on the intake air temperature forms a target value, and the opening of the motor-driven expansion valve 4 is controlled in a manner to reach the target value in the given time.


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Inventors:
MOMOZAKI MAKOTO
YAMAMOTO MASAKI
Application Number:
JP30897699A
Publication Date:
May 18, 2001
Filing Date:
October 29, 1999
Export Citation:
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Assignee:
DAIKIN IND LTD
International Classes:
F24F11/02; F25B1/00; F25B13/00; F25B47/02; (IPC1-7): F25B1/00; F24F11/02; F25B13/00; F25B47/02
Attorney, Agent or Firm:
大浜 博