Refrigeration – Automatic control – Preventing – removing or handling atmospheric condensate
Patent
1990-02-26
1991-10-15
Tanner, Harry B.
Refrigeration
Automatic control
Preventing, removing or handling atmospheric condensate
621964, 62205, 62278, 62513, F25D 2106, F25B 4702
Patent
active
050563270
ABSTRACT:
A hot gas defrost refrigeration system has a compressor, a condenser, a receiver, an evaporator, interconnected by fluid passage means and incorporating valve means to cause refrigerant to flow sequentially through the compressor, condenser, receiver and evaporator to the compressor during the refrigeration cycle. The refrigeration system includes a superheater and defrost passage means, including valve means, connecting the evaporator outlet to the condenser inlet and connecting the condenser outlet through the superheater to the compressor inlet, bypassing the receiver. The passage means connecting the compressor outlet with the evaporator inlet includes a superheat passage in heat exchange relationship with the superheater for transferring heat from the refrigerant discharged from the compressor outlet to the refrigerant delivered to the compressor inlet during the defrost cycle. During the defrost cycle, refrigerant flows sequentially from the compressor to the evaporator, then through the defrost passage means to the condenser and then to the superheater to the compressor. The condenser is utilized as a reevaporator during defrost and the superheater exchanges heat between compressor inlet and suction refrigerant to enhance system operation during the defrost cycle.
REFERENCES:
patent: 1378026 (1921-05-01), Hansen
patent: 2691276 (1954-10-01), Trask
patent: 2770104 (1956-11-01), Sweynor
patent: 3786651 (1974-01-01), Eschbaugh
patent: 3967782 (1976-07-01), Eschbaugh
patent: 4083195 (1978-04-01), Kramer et al.
patent: 4095438 (1978-06-01), Kramer
patent: 4102151 (1978-07-01), Kramer et al.
patent: 4343157 (1982-08-01), Hattori
patent: 4798058 (1989-01-01), Gregory
Bulletin 413.3--Medium Profile-Hot Gas Defrost Unit Collers--Wickes Manufacturing Company, Bohn Heat Transfer Division, 1986.
Bulletin 0 & 1413.3--Operating and Installation Instructions, Model MPG (Rev.F)--Wickes Mfg. Co., Bohn Heat Transfer Div., 1986.
Heatcraft Inc.
Tanner Harry B.
LandOfFree
Hot gas defrost 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 Hot gas defrost refrigeration system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hot gas defrost refrigeration system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-981912