Cooling method for controlled high speed chilling or freezing

Details Cooling method for controlled high speed chilling or freezing Cooling method for controlled high speed chilling or freezing

2006-04-25

2006-04-25

Jiang, Chen Wen (Department: 3744)

Refrigeration

Automatic control

Of external fluid or means

C062S434000

Reexamination Certificate

active

07032396

ABSTRACT:
A cooling method for controlled high speed chilling or freezing is disclosed. Cooling fluid is circulated by a submersed circulator, such as a motor, at a substantially constant velocity past a substance to be cooled . The velocity of fluid flow is maintained despite changes in the viscosity of the cooling fluid, by either increasing or decreasing the amount of torque supplied by the motor. The cooling fluid is cooled to a desired temperature by circulating the fluid past a multi-path heat exchanging coil connected to a refrigeration system. An optimal cooling fluid temperature for a variety of applications is in the range of about −24° C. to −26° C., resulting in significant efficiency gains over conventional cooling processes.

REFERENCES:
patent: 4888956 (1989-12-01), le Roux Murray
patent: 5003787 (1991-04-01), Zlobinsky
patent: 5191773 (1993-03-01), Cassell
patent: 6519954 (2003-02-01), Prien et al.
patent: 2003/0154729 (2003-08-01), Prien et al.

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