Air conditioner and method of controlling such

Details Air conditioner and method of controlling such Air conditioner and method of controlling such

2005-11-08

2005-11-08

Norman, Marc (Department: 3744)

Refrigeration

Automatic control

Diverse, cascade or compound refrigeration-producing system

C062S158000, C062S228400, C062S228500, C062S510000

Reexamination Certificate

active

06962058

ABSTRACT:
The object of this invention is to provide an air conditioner with a variable capacity compressor (2) parallely connected to a fixed capacity compressor (4), and a method of controlling the operation of such an air conditioner. When it is required to start the fixed capacity compressor (4) in addition to an operation of the variable capacity compressor (2) due to an increase in the sum of the required cooling capacities of indoor units (9), an outdoor control unit (13) starts the fixed capacity compressor (4) during an unloading mode operation of the variable capacity compressor (2) where the pressure difference between the outlet side and inlet side of the variable capacity compressor is minimized. The fixed capacity compressor (4) is thus smoothly started without causing an induction of excessive starting current, and improves the operational reliability of the air conditioner.

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patent: 2002-317992 (2002-10-01), None

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