Refrigeration – Automatic control – Of external fluid or means
Patent
1998-12-22
2000-11-21
Wayner, William
Refrigeration
Automatic control
Of external fluid or means
62185, 165236, F25D 1700, F24D 1100
Patent
active
061486264
ABSTRACT:
A chiller apparatus capable of increasing accuracy of temperature control without large-sizing a chiller, to thereby rapidly accommodate to a large variation in temperature of a load and being decreased in size thereof to increase a degree of freedom in selection of conditions under which the apparatus is installed. The chiller apparatus includes a primary circuit including a chiller and a pump for circulating a refrigerant through the primary circuit, a secondary circuit including a pump for circulating, through the secondary circuit, a refrigerant heat-exchanged with the refrigerant of the primary circuit, a buffer tank arranged at the secondary circuit, a load circuit including a pump for circulating a refrigerant through the load circuit to chill a load, and communication flow passages for connecting the secondary circuit and load circuit to each other therethrough. One of the communication flow passages is provided with a valve for controlling a refrigerant flowing through the communication flow passage. The load is provided with a first temperature detection mechanism for generating a load temperature signal. The valve has a degree of opening adjusted depending on the load temperature signal of the first temperature detection mechanism. The chiller apparatus also includes at least one temperature control mechanism for controlling a temperature of the load.
REFERENCES:
patent: 5138845 (1992-08-01), Mannion et al.
Innotech Corporation
Wayner William
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