Temperature control system for refrigerator/freezer combinations

Refrigeration – Automatic control – Of external fluid or means

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Temperature control system for refrigerator/freezer combinations does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Temperature control system for refrigerator/freezer combinations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature control system for refrigerator/freezer combinations will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1152340

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.