Parallel expansion valve system for energy efficient air conditi

Details Parallel expansion valve system for energy efficient air conditi Parallel expansion valve system for energy efficient air conditi

1985-02-22

1986-08-19

Tanner, Harry

Refrigeration

Automatic control

Refrigeration producer

62225, F25B 4104

Patent

active

046061983

ABSTRACT:
Disclosed are novel expansion means useful in an air conditioning system of the type having a refrigerant which sequentially flows through variable speed compressor means responsive to varying outdoor air temperature for attenuating refrigerant mass flow corresponding to lower outdoor air temperature and which compresses vaporous refrigerant supplied by evaporator means, condenser means which is in heat exchange relationship with outdoor air for condensing refrigerants circulated from said compressor means, expansion means which expand said liquid refrigerant from said condenser means, and evaporator means which is in direct or indirect heat exchange relationship with air in a confined space for maintaining said confined space air at a desired set point of temperature and/or humidity, said evaporator supplying said refrigerant to said compressor means. The improved expansion means comprises two refrigerant expansion valve means which are connected in parallel by a refrigerant line from said condensing means and which passes said refrigerant to said evaporator means. The secondary valve means is of greater capacity than the primary valve means. Secondary valve means has its equalizing line connected to the refrigerant line between the secondary valve means and the evaporator means.

REFERENCES:
patent: 2112039 (1938-03-01), McLenegan
patent: 2379286 (1945-06-01), Dobson
patent: 2669849 (1954-02-01), Lange
patent: 3559422 (1971-02-01), Holzer

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