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Title:
METHOD OF CONTROLLING OPERATION OF CAPACITY-VARIABLE COMPRESSOR USED IN SPACE-COOLING APPARATUS
Document Type and Number:
Japanese Patent JPS5818048
Kind Code:
A
Abstract:

PURPOSE: To operate a space-cooling apparatus efficiently according to the load, by switching the capacity of a compressor, for instance, when the temperature of air at the outlet of an evaporator, the temperature of air discharged from a duct, etc. have reached prescribed values, and effecting on-off control of the compressor, for instance, when the pressure of suction gas of the compressor has reached a prescribed value.

CONSTITUTION: When a compressor is set into 100% operation after starting its operation, the temperature Te of air at the outlet of an evaporator, temperature Tf of air discharged from a duct and pressure Ps of suction gas of the compressor are all lowered. When the pressure Ps reaches a prescribed value Ps2, 100% operation of the compressor is stopped, while when Ps reaches a prescribed value Ps1, the compressor is again set into operation. When the room temperature becomes a proper level while repeating the above procedures, the temperature Tf is raised by increasing the heating power of a heater disposed in the duct. Further, when the temperature difference between Tf and Te reaches a prescribed value ΔTfe2, operation of the compressor is switched from 100% to 50% operation. Under the 50% operation of the compressor, on- off control for the compressor based on the value of Ps is continued.


Inventors:
HASEGAWA ATSUSHI
KOUNO HIROYA
KOBAYASHI HISAO
Application Number:
JP11728681A
Publication Date:
February 02, 1983
Filing Date:
July 27, 1981
Export Citation:
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Assignee:
TOYODA AUTOMATIC LOOM WORKS
International Classes:
F24F11/02; F25B49/02; (IPC1-7): F24F11/00
Domestic Patent References:
JPS5488642A1979-07-13
Attorney, Agent or Firm:
Hironobu Onda