Refrigerant flow control device

Details Refrigerant flow control device Refrigerant flow control device

1992-12-30

1994-02-15

Tanner, Harry B.

Refrigeration

Automatic control

Refrigeration producer

137192, 137430, F25B 4104

Patent

active

052856534

ABSTRACT:
A float-type refrigerant control device meters the flow of saturated refrigerant liquid condensate to a subsequent stage from an outlet of a sump in a refrigerant condenser. A float in the form of a metal shell open at the bottom is slidably positioned on an upright, generally cylindrical standpipe which is mounted at the outlet of the sump. A metering sleeve situated within the standpipe is joined to the float for axial travel with the float. One or more metering slots penetrate the standpipe near its lower end, and these are uncovered by the sleeve as the float rises to permit the liquid to flow out through the sump outlet. A vapor injection duct supplies refrigerant vapor from a high pressure source to the float to keep the same replenished with vapor, thereby maintaining a positive buoyancy relative to the saturated refrigerant liquid condensate in the sump.

REFERENCES:
patent: 130490 (1872-08-01), Dick
patent: 2051802 (1936-08-01), Philipp
patent: 2087913 (1937-07-01), Kenney et al.
patent: 3315481 (1967-04-01), Check et al.
patent: 4256136 (1981-03-01), Crawford
patent: 5009079 (1991-04-01), Zinsmeyer

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