Refrigeration – Automatic control – By accumulation on freezing surface – e.g. – ice
Patent
1980-08-25
1982-06-01
Makay, Albert J.
Refrigeration
Automatic control
By accumulation on freezing surface, e.g., ice
62155, F25D 2102
Patent
active
043321410
ABSTRACT:
A control system for a refrigeration system for controlling the defrosting of one of the heat exchange coils thereof; the control system comprising a nozzle element positioned adjacent to one side of the evaporator coil at a point where frost may build up on the evaporator coil; compressed air means connected to the nozzle through valve means and controllable to selectively permit air to be discharged from a nozzle against the coil; air flow sensor means positioned on the other side of the evaporator coil in register with a nozzle, the sensor means including switch means adapted to be actuated upon said sensor being impacted by a stream of air; and controller means adapted to periodically actuate the valve means so as to cause periodic pulses of air to flow from the nozzle through the evaporator coil, said controller further functioning to place the system into a defrost mode of operation upon said sensor switch means being unactuated for a period of time exceeding the cycle period of the actuation of the valve means.
REFERENCES:
patent: 3077747 (1963-02-01), Johnson, Jr.
patent: 3374643 (1968-03-01), Thorner
patent: 3377817 (1968-04-01), Petranek
patent: 3461681 (1969-08-01), Smith et al.
patent: 3479836 (1969-11-01), McHale
patent: 3826103 (1974-07-01), Grover
patent: 4248052 (1981-02-01), Bechtel
Mueller Dale A.
Ruminsky Robert T.
Serber Stephen L.
Wolfgram Rodger C.
Honeywell Inc.
Jensen Roger W.
Makay Albert J.
Tanner Harry
LandOfFree
Defrost control system for refrigeration system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Defrost control system for refrigeration system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Defrost control system for refrigeration system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1844433