Dual capacity compressor with reversible motor and controls arra

Details Dual capacity compressor with reversible motor and controls arra Dual capacity compressor with reversible motor and controls arra

1979-03-05

1981-02-03

Wayner, William E.

Refrigeration

Automatic control

Time or program actuator

236 1E, 318284, 417 32, 62228, F04B 4910, H02P 100, G05D 2332

Patent

active

042480531

ABSTRACT:
In the main intended application of the arrangement according to the invention, that is, using a reversible motor compressor in a heat pump in a refrigerating or air conditioning system, it is desirable to insure a delay during reversal of the direction of compressor operation. A control arrangement is provided in which the control system controls the direction of motor operation or compressor capacity in accordance with temperature conditions, the system including control means for effecting operation in a low capacity direction or condition, or alternatively in a high capacity direction or condition in response to one set, and another set, respectively, of temperature conditions and with timer means delaying a restart of the compressor motor for at least a predetermined time in response to a condition of the control means operative to initiate a change in the operating direction or condition of the compressor when it restarts. The operation of the system in the different capacities is also subject to control in accordance with changes in ambient temperature.

REFERENCES:
patent: 3010339 (1961-11-01), Brock
patent: 3601675 (1971-08-01), Radtke
patent: 4006603 (1977-02-01), Miles
patent: 4105064 (1978-08-01), Del Toro
patent: 4116614 (1978-09-01), Kutrieb

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