Refrigerant handling system with air purge and multiple refriger

Details Refrigerant handling system with air purge and multiple refriger Refrigerant handling system with air purge and multiple refriger

1992-03-02

1993-01-26

Tanner, Harry B.

Refrigeration

With indicator or tester

Condition sensing

62195, 62475, F25B 4500

Patent

active

051813912

ABSTRACT:
A refrigerant handling system that includes a liquid refrigerant storage container and a pump for feeding refrigerant in liquid phase to the container so that any air in the container or carried by the circulating refrigerant is captured within the container over the refrigerant. A bulb containing a reference refrigerant (R12) is positioned in heat transfer relation with refrigerant fed to the container. A pressure gauge is coupled to the bulb and calibrated to indicate saturation temperature of the reference refrigerant, and thereby reflect actual temperature of refrigerant in the container. A differential pressure gauge has separate scales for multiple refrigerant types (R22, R134a, R500, R502) to indicate apparent refrigerant temperature as a function of any bulb/container pressure differential. A valve is coupled to the container for venting air therefrom when apparent refrigerant temperature exceeds actual refrigerant temperature for the specific refrigerant type under service.

REFERENCES:
patent: 2324627 (1943-07-01), Jones
patent: 2451072 (1948-10-01), Cooper
patent: 2475218 (1949-07-01), Campbell
patent: 2612760 (1952-10-01), Baggette et al.
patent: 4805416 (1989-02-01), Manz et al.
patent: 4939905 (1990-07-01), Manz
patent: 5005369 (1991-04-01), Manz
patent: 5063749 (1991-11-01), Manz

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