Method of operating a transport refrigeration unit

Details Method of operating a transport refrigeration unit Method of operating a transport refrigeration unit

1991-07-11

1993-04-13

Rivell, John

Refrigeration

Processes

Defrosting or frost inhibiting

62126, 62155, 62156, 62234, F25D 2106

Patent

active

052011852

ABSTRACT:
The invention relates to methods of defrosting an evaporator coil of a transport refrigeration unit which includes microprocessor based electrical control. The electrical control maintains the temperature of a conditioned space at a predetermined set point temperature via hot gas heating and cooling cycles. The evaporator coil is defrosted to remove frost and ice by closing a damper to the served space and initiating a heating cycle. At the termination of defrost, a cooling cycle is initiated, but the damper is maintained in a closed position for a predetermined period of time to remove heat built up during the defrost process. The invention also detects damper malfunctions, including failure to close prior to defrost, and failure to open after defrost. The invention also evaluates manual and timed requests for a defrost operation, overriding the requests in response to predetermined conditions.

REFERENCES:
patent: 3726104 (1973-04-01), Howland
patent: 4646529 (1987-03-01), Hanson
patent: 4663725 (1987-05-01), Truckenbrod et al.
patent: 4665710 (1987-05-01), Kyzer et al.
patent: 4903500 (1990-02-01), Hanson

Affiliated with

Also associated with

Rating

Method of operating a transport refrigeration unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of operating a transport refrigeration unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of operating a transport refrigeration unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1148261