Hot gas defrost system

Details Hot gas defrost system Hot gas defrost system

1976-06-17

1977-08-23

King, Lloyd L.

Refrigeration

With means preventing or handling atmospheric condensate...

Means utilizing heat developed by refrigeration producer

62196B, 62438, F25B 4700, F25B 4100, F25D 1104

Patent

active

040431444

ABSTRACT:
A vehicle eutectic plate refrigeration system provides simultaneous defrosting of part of the plate exterior surface, all of the secondary heat transfer surface and freezing of the eutectic solution within the plate. This system thus preserves sufficient space for air passage, which otherwise would be blocked by frost and ice. The system utilizes the normally rejected heat to perform a defrosting function and utilizes the ice and frost to perform the refrigerant condensing function. Hot gas from the compressor is diverted through the defrost coil where the refrigerant is for the most part condensed before it is passed through the condenser. The liquid refrigerant from the condenser is then used to freeze the eutectic solution within the plate. After completion of the defrost operation, determined by sensing refrigerant temperature at the outlet of the defrost coil, or by some other means, all of the compressor refrigerant discharge is directed through the condenser to continue freezing of the eutectic solution.

REFERENCES:
patent: 3015939 (1962-01-01), Brainard
patent: 3845638 (1974-11-01), Apple, Jr. et al.

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