Refrigeration – Automatic control – Trapping and discharging refrigerant batches
Patent
1991-10-15
1992-12-01
Sollecito, John
Refrigeration
Automatic control
Trapping and discharging refrigerant batches
62503, 62188, 62220, F25B 4100
Patent
active
051671280
ABSTRACT:
The present invention is directed to a system for avoiding possible compressor damage occasioned by major flood back of the suction accumulator in a refrigeration system. In one embodiment of the invention, a float member slides upwardly and downwardly upon the stand pipe of the accumulator in response to the level of refrigerant therein, and when the refrigerant rises to a critical level, the float member is effective to block the outlet openings in the upper end of the suction accumulator, preventing flow of refrigerant to the compressor sufficient in volume to cause damage thereto. In another embodiment of the invention, a float member having magnet means associated therewith moves vertically in opposite directions upon a tubular support connected to the suction accumulator structure. Magnetic switch means associated with the tubular support member is actuated by the float member magnet means when in proximity thereto, effecting by various means termination of refrigerant flow to the compressor sufficient in volume to cause damage thereto.
REFERENCES:
patent: 3837177 (1974-09-01), Rockwell
patent: 4757696 (1988-07-01), Gannaway
Claeboe Bertram F.
Sollecito John
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