Refrigeration – Automatic control – Refrigeration producer
Patent
1984-05-18
1985-10-08
Wayner, William E.
Refrigeration
Automatic control
Refrigeration producer
62498, 236 80R, F25B 4104
Patent
active
045452156
ABSTRACT:
A refrigeration apparatus comprising a compressor, a condenser, a pressure-reducing device and an evaporator connected sequentially in a loop. The loop includes a check valve placed between the outlet of said evaporator and the intake port of said compressor to prevent a refrigerant from flowing from the compressor side to the evaporator side; a pressure signal transmission pipe whose one end is connected to the outlet of said check valve to apply a pressure corresponding to the refrigerant pressure at the outlet side of said check valve and, a fluid control valve communicated with the other end of said pressure signal transmission pipe to control the refrigerant flowing to the inlet side of device in response to the refrigerant pressure in the other end of said pipe. The fluid control valve performs ON-OFF controlling operations depending on a difference in pressure between a pressure at the other end of said pressure signal transmission pipe and a pressure at the inlet side of said check valve while it automatically opens at the time of operation of said compressor and closes at the time of stoppage of said compressor.
REFERENCES:
patent: 2326093 (1943-08-01), Carter
patent: 2331264 (1943-10-01), Carter
patent: 2613683 (1952-10-01), Baird et al.
patent: 4267702 (1981-05-01), Houk
patent: 4286438 (1981-09-01), Clarke
Mitsubishi Denki & Kabushiki Kaisha
Wayner William E.
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