Title:
REFRIGERATION UNIT AND CONTROL METHOD FOR ITS OIL RETURN
Document Type and Number:
Japanese Patent JP2002349938
Kind Code:
A
Abstract:
To provide a freezing apparatus and a control method for its oil return where freezer oil is prevented from becoming insufficient for a compressor of an outdoor unit, and reliability is improved sharply.
In a freezing apparatus in which a plurality of indoor units 1A, 1B, and 1C operable individually as need are connected in parallel to an outdoor unit 10, there is provided an oil return control means 17 so that freezer oil accumulated on the side of a plurality of or one stationary indoor units 1A, 1B, and 1C is returned.
Inventors:
HIRAMATSU SEIJI
Application Number:
JP2001152578A
Publication Date:
December 04, 2002
Filing Date:
May 22, 2001
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F24F11/02; F25B1/00; F25B5/02; (IPC1-7): F24F11/02; F25B1/00; F25B5/02
Attorney, Agent or Firm:
Koharu Fujita (3 outside)
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