Counter-convection vapor control system

Details Counter-convection vapor control system Counter-convection vapor control system

1981-04-24

1983-07-26

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 32, 34 78, 228242, F26B 304

Patent

active

043948022

ABSTRACT:
A method and apparatus for vapor conservation and control for use with vapor phase soldering, degreasing, or similar systems having an open tank containing the vapor into which work is introduced and removed. The present invention comprises apparatus associated with the tank and operative to create a counter-convection flow which opposes the outward convection flow of vapor from the open tank. The process vapor is substantially retained within the tank while maintaining an open central channel for work entry and removal. The counter-convection flow is produced by establishment of a temperature differential by cooling and/or heating means disposed to cause a convection flow in a downward direction which opposes the normal upward flow of vapor from the tank.

REFERENCES:
patent: 918621 (1909-04-01), Wenborne
patent: 3375177 (1968-03-01), Rand
patent: 3904102 (1975-09-01), Chu et al.
patent: 4077467 (1978-03-01), Spigarelli

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