Flooded refrigerant condenser head pressure control

Details Flooded refrigerant condenser head pressure control Flooded refrigerant condenser head pressure control

1974-09-05

1976-01-27

Wayner, William E.

Refrigeration

Processes

Compressing, condensing and evaporating

62DIG17, F25B 4900

Patent

active

039344258

ABSTRACT:
A condenser head pressure control for a flooded refrigerant system of the vapor compression type has a valve chamber with three ports spaced axially, two leading to the top and bottom of a condenser and an inlet port leading to the system compressor. A piston valve in the valve chamber is controlled by a spring-biased diaphragm responsive to inlet port or system compressor output pressure. The valve connects the compressor outlet to the top of the condenser at low output pressures and to the bottom of the condenser at high pressures. A capillary tube connects the top of the condenser to the valve inlet. The control achieves substantially constant head pressure while avoiding any need for critical charging of the refrigerant system or variable speed controls or dampers on the condenser fan.

REFERENCES:
patent: 1533336 (1925-04-01), Pownall
patent: 1790237 (1931-01-01), King
patent: 3060699 (1962-10-01), Tilney

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