Refrigeration – Processes – Defrosting or frost inhibiting
Patent
1986-04-25
1987-04-28
Tanner, Harry B.
Refrigeration
Processes
Defrosting or frost inhibiting
62151, 621963, 621964, 62278, 62510, F25B 4100, F25D 2106
Patent
active
046603840
ABSTRACT:
A refrigeration system, and a method for operating the system, having a two-stage compressor for supplying refrigerant to a cooling coil, and having a desuperheater unit disposed between the two compressor stages. This desuperheater unit includes a container having heat exchange fluid therein and a coil, disposed in the heat exchange fluid, through which the refrigerant passes. During normal operation of the refrigeration system, both compressors are running. The desuperheater unit between the two compressor stages reduces the temperature of the compressed refrigerant before it reaches the second stage. The temperature of the heat exchange fluid is correspondingly increased in the course of the heat exchange. Also during normal operation, frost accumulates on the cooling coil, which is removed by a control device initiating a defrost cycle. When the defrost cycle begins, the first stage compressor is turned off while the second stage compressor continues to run. Flow of refrigerant is then diverted making the desuperheater coil an evaporator coil, providing load for the second stage compressor, while the cooling coil becomes the condenser. Thus, during the defrost cycle, the heat exchange fluid is cooled while the cooling coil is heated and defrosted. After defrost is completed, the flow of refrigerant is normalized, with the cooling coil again cooled and the heat exchange fluid again heated.
REFERENCES:
patent: 3138007 (1964-06-01), Friedman et al.
patent: 3838582 (1974-10-01), Redfern et al.
patent: 3869874 (1975-03-01), Ditzler
patent: 4083195 (1978-04-01), Kramer et al.
Kees Nicholas A.
Kirby Thomas F.
Nilles James E.
Tanner Harry B.
VILTER Manufacturing, Inc.
LandOfFree
Defrost apparatus for refrigeration system and method of operati 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 apparatus for refrigeration system and method of operati, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Defrost apparatus for refrigeration system and method of operati will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-469582