Refrigerant handling system with facility for clearing system co

Details Refrigerant handling system with facility for clearing system co Refrigerant handling system with facility for clearing system co

1991-04-08

1992-07-07

Makay, Albert J.

Refrigeration

With means for charging closed refrigeration producing system

62 85, 62475, F25B 4500

Patent

active

051272393

ABSTRACT:
A refrigerant handling system that includes a compressor and a plurality of refrigerant system components connected in series between a refrigerant source, such as a system under service, and a refrigerant storage container. To clear a selected system component of refrigerant, such as a refrigerant filter or a refrigerant condenser, a valve is connected between the selected component and the compressor. The valve has multiple ports and valve positions, in one of which refrigerant is fed through the selected component to the storage container in normal operation, and in another of which the selected component is isolated from the storage container and connected to the pump inlet for drawing refrigerant from the component and feeding such refrigerant directly to the container. A check valve cooperates with the multi-port valve to isolate the selected component from the storage container during the clearing mode of operation.

REFERENCES:
patent: 4805416 (1989-02-01), Manz et al.
patent: 4903499 (1990-02-01), Merritt

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