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Patent Searching and Data


Title:
DEFROSTING METHOD OF AIR-CONDITIONING MACHINE
Document Type and Number:
Japanese Patent JPH06337178
Kind Code:
A
Abstract:

PURPOSE: To defrost while maintaining the heating operation of indoor units A, B, C when it frosts during capacity control operation upon heating operation.

CONSTITUTION: When frost is adhered to an outdoor side heat exchanger 3A during capacity control operation, in which the outdoor side heat exchanger 3A is functioned as an evaporator and another outdoor side heat exchanger 3B is stopped upon heating operation, outdoor side switching valves 2A, 2B are switched whereby the outdoor side heat exchanger 3b, under stopping condition, is functioned as an evaporator and, at the same time, an outdoor side solenoid valve 19A at the liquid side of the outdoor side heat exchanger 3A is closed whereby high-temperature gas refrigerant flows from a compressor 1 into the outdoor side heat exchanger 3A to defrost the same.


Inventors:
KOBAYASHI TAKAYUKI
ITO MASAMI
Application Number:
JP1993000148665
Publication Date:
December 06, 1994
Filing Date:
May 27, 1993
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F25B13/00; F25B29/00; F25B47/02; (IPC1-7): F25B13/00; F25B29/00; F25B47/02
Attorney, Agent or Firm:
Toru Suganuma (2 outside)