Refrigeration – Automatic control – Of external fluid or means
Patent
1991-11-14
1993-04-13
Hepperle, Stephen M.
Refrigeration
Automatic control
Of external fluid or means
62275, 25112913, F25D 1708
Patent
active
052018881
ABSTRACT:
A combined refrigerator/freezer unit provides a step motor driven damper for adjusting the relationship between the amount of chilled air delivered to the freezer compartment and the amount of chilled air delivered to the refrigeration department. The step motor, and in turn, the damper, is controlled by a integrated circuit which receives signals from temperature sensors in each compartment. The control produces pulses which cause the step motor to readjust the position of the damper to correct temperature imbalances which exist within the two compartments. The step motor functions to move the damper to predetermined adjusted positions without requiring any feedback to establish the actual position of the damper before and after each adjustment. The control also functions during defrost to cause the evaporator temperature to be raised prior to the operation of the defrost heaters.
REFERENCES:
patent: 3288370 (1965-11-01), Mingrone et al.
patent: 3488030 (1970-01-01), Hulme et al.
patent: 4276754 (1981-07-01), Ty
patent: 4282720 (1981-08-01), Stottmann et al.
patent: 4527734 (1985-07-01), Swain et al.
patent: 4530217 (1985-07-01), Alluto et al.
patent: 4682474 (1987-07-01), Janke
patent: 4688393 (1987-08-01), Linstromberg et al.
patent: 4732010 (1988-03-01), Linstromberg et al.
patent: 4819442 (1989-04-01), Sepso et al.
patent: 4850319 (1989-07-01), Imoehl
patent: 4920758 (1990-05-01), Janke et al.
patent: 4924680 (1990-05-01), Janke et al.
patent: 4957274 (1990-09-01), Hood et al.
Beach, Jr. Sammie C.
Peter Gary R.
Hepperle Stephen M.
White Consolidated Industries, Inc.
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