Refrigeration – Processes – Transferring heat between diverse function portions of...
Patent
1975-01-06
1977-02-08
O'Dea, William F.
Refrigeration
Processes
Transferring heat between diverse function portions of...
62117, 62197, 62505, 62513, 415178, 417367, F25B 4104
Patent
active
040066029
ABSTRACT:
The invention makes use of refrigerant passages or conduits in very effective heat-exchange relationship with the compression chamber and other hot parts of the compressor in a refrigeration system. The passages communicate at their inlet with an expansion valve or orifice, and at their outlet with a region of the compression chamber such that introduction of refrigerant vapor from the passages does not adversely affect the suction of the compressor. The expansion valve receives liquid refrigerant directly from the condenser of the system. The refrigerant vaporizes while passing through the passages, and then is injected in vapor form into the compression chamber for compression along with the main body of refrigerant vapor received from the evaporator of the system. Heat from the compressor, particularly the compression chamber and (in a piston-type compressor) the valve plate, is transferred through the walls of the passages to the vaporizing liquid-cooled refrigerant passing through the passages.
In accordance with one major aspect of the present invention, vaporizing refrigerant liquid is employed directly and effectively to cool the compressor, without the necessity of providing any oil cooler. The need for an oil cooler is eliminated since the present invention maintains the compressor sufficiently cool that the oil does not become excessively hot.
In accordance with another major aspect of the invention, the vaporizing refrigerant is forced through passage or conduit means to the hottest compressor portions, where cooling is most critically needed, in effective heat-transfer relationship with such portions.
Flow of refrigerant through the passages is automatically regulated to maintain the compressor generally within a preselected operating temperature range, by temperature and pressure-controlled flow regulating valves.
REFERENCES:
patent: 3106334 (1963-10-01), Fobleman et al.
patent: 3163999 (1965-01-01), Ditzler et al.
patent: 3165905 (1965-01-01), Ware
patent: 3300997 (1967-01-01), Kocher
patent: 3379033 (1968-04-01), Grant
patent: 3407623 (1968-10-01), Richardson et al.
Capossela Ronald C.
Gausewitz Richard L.
O'Dea William F.
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