Refrigeration – Reversible – i.e. – heat pump – With product treatment
Patent
1978-03-02
1980-04-15
Wayner, William E.
Refrigeration
Reversible, i.e., heat pump
With product treatment
62505, 62513, F25B 1300
Patent
active
041977190
ABSTRACT:
A multi-cylinder reciprocating compressor is automatically controlled in terms of two speed operation and selective utilization of the cylinders under single stage action to meet heating and cooling loads by way of a two step indoor thermostat and an outdoor thermostat. The compressor may supply energy to storage during heating and cooling or receive energy therefrom with the storage coil selectively loop connected to the outside or indoor coils. Subcooling return is directed to a specific cylinder and overrides refrigerant return vapor to that cylinder from other coils functioning as evaporators. Solenoid operated valves effect unloading of the compressor during start up and automatically effect removal or inclusion of selected cylinders to the single stage compressor operation. Automatic load responsive control of compressor drive motor speed is effected.
REFERENCES:
patent: 3859814 (1975-01-01), Grant
patent: 4030312 (1977-06-01), Wallin et al.
patent: 4102149 (1978-07-01), Conley et al.
Dunham-Bush, Inc.
Wayner William E.
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