Refrigeration – Reversible – i.e. – heat pump – With product treatment
Patent
1975-04-17
1976-09-07
King, Lloyd L.
Refrigeration
Reversible, i.e., heat pump
With product treatment
62428, F25B 1300, F25D 1706
Patent
active
039786846
ABSTRACT:
The invention relates to a system that can provide the refrigeration function of a compression refrigeration system, or by changing the position of some valves in the system, the system can provide a defrost function, or a heating function, or a capacity controlled refrigeration function. To accomplish the defrost or heating function compressed refrigerant is condensed in a heat exchanger that is in heat exchange relationship with a main evaporator and the liquid refrigerant thus formed passes through an expansion valve to an auxiliary evaporator. When the system operates to provide a capacity controlled refrigeration function, the capacity of the main evaporator is controlled by heat of compression from the heat exchanger that is in heat exchange relationship with the main evaporator. The amount of heat from this heat exchanger that counteracts the cooling effect of the main evaporator can be varied by dissipating a variable amount of the heat of compression before it reaches this heat exchanger. When performing the capacity control function, liquid refrigerant from the heat exchanger passes through an expansion valve to the main evaporator.
REFERENCES:
patent: 2293482 (1942-08-01), Ambrose
patent: 2932178 (1960-04-01), Armstrong et al.
patent: 3105366 (1963-10-01), Atchison
patent: 3203196 (1965-08-01), Malkoff
patent: 3392541 (1968-07-01), Nussbaum
patent: 3529659 (1970-09-01), Trask
patent: 3777508 (1973-12-01), Imabayashi et al.
King Lloyd L.
Renz C. F.
Thermo King Corporation
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