System for adapting a dry cleaner machine to the use of hydrocar

Details System for adapting a dry cleaner machine to the use of hydrocar System for adapting a dry cleaner machine to the use of hydrocar

1998-10-08

2000-04-18

Bennett, Henry

Drying and gas or vapor contact with solids

Apparatus

With apparatus cleaner and/or escaping material collector

F26B 1900

Patent

active

060499931

ABSTRACT:
A system for adapting a dry cleaner machine to the use of hydrocarbon-based cleaning fluids provides a purging gas flow of an inert gas through the machine and through articles to be cleaned in a cleaning compartment therein prior to introduction of the hydrocarbon-based cleaning fluid. The system further provides a maintenance gas flow of an inert gas through the machine during at least a cleaning cycle and a drying cycle. The maintenance gas flow also flows through an aspirating device which communicates with an interior portion of the machine and which aspirates gas samples therefrom. The oxygen level of the gas samples is sensed and monitored, with the maintenance gas flow adjusted to maintain the oxygen level safely below a limit value. At least a portion of the purging gas flow and the maintenance gas flow is exhausted from the machine at two locations, the locations selected to provide a uniform bathing of all interior components of the machine in the inert gas flow.

REFERENCES:
patent: 2639599 (1953-05-01), Wellford
patent: 4150494 (1979-04-01), Rothchild
patent: 4475293 (1984-10-01), Banerjee
patent: 5241976 (1993-09-01), Ikawa
patent: 5423921 (1995-06-01), Saal et al.

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