Multi-step pressure reducing method and apparatus

Details Multi-step pressure reducing method and apparatus Multi-step pressure reducing method and apparatus

1997-09-03

1998-11-03

Capossela, Ronald C.

Refrigeration

Processes

Vacuumizing an open outlet chamber

62268, 417244, F25B 1900

Patent

active

058292586

ABSTRACT:
The air pressure in a part of an appliance (e.g., a refrigeration pipe of an air conditioner unit) is reduced as the part is conveyed on a conveyor. This is accomplished by means of a vacuum pump which is connected to the part by a hose. The pressure reduction is achieved in a step-by-step fashion by either (a) alternately starting and stopping the pump while the hose remains connected to the part, or (b) alternately connecting and disconnecting the hose to and from the part.

REFERENCES:
patent: 3304733 (1967-02-01), Coffman
patent: 4361418 (1982-11-01), Tscheppe
patent: 4942053 (1990-07-01), Franklin et al.

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