Chiller controls

Details Chiller controls Chiller controls

1976-01-22

1978-04-18

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

307252Q, 318227, 361 22, 361 92, H02P 126, F25B 4900

Patent

active

040844064

ABSTRACT:
A solid state starter for a chiller compressor motor mounts directly on the compressor motor and comprises a bank of SCR's which are controllably switched to conduct current to the motor for starting and running. Electronic control modules are provided including a trigger module for triggering the SCR's, a current module (including current overload protection) for controlling the trigger module so that motor current is controllably delivered to the motor, and a voltage safety module for protecting against electrical faults. The SCR's are cooled by liquid refrigerant.

REFERENCES:
patent: 3818983 (1974-06-01), Grandia
patent: 3959704 (1976-05-01), McCrea
patent: 3996499 (1976-12-01), Gary et al.
Industrial Electronics Handbook, McGraw-Hill, 1960, pp. 2-2-236.

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