Apparatus and method for protecting chemical bath seals

Details Apparatus and method for protecting chemical bath seals Apparatus and method for protecting chemical bath seals

1994-01-31

1995-01-24

Chambers, A. Michael

Fluid handling

With heating or cooling of the system

Circulating fluid in heat exchange relationship

220 412, 220643, F16K 4900

Patent

active

053834887

ABSTRACT:
A bath in which articles are processed by immersion in hot liquid chemicals has a chemical receptacle seated in a casing. Wetting of internal components in the casing, such as heating elements and thermal insulation, is prevented by a seal between the receptacle and the rim of the casing. The otherwise exposed seal is isolated from the external environment of the bath by a barrier of flowing water. The water flow shields the sealing material from corrosive chemical drips and fumes and also has a cooling effect which decreases thermal expansion of components in the region of the seal and thereby reduces structural stresses.

REFERENCES:
patent: 2446196 (1948-08-01), Sitney
patent: 2705016 (1955-03-01), Saar
patent: 2798364 (1957-07-01), Morrison
patent: 2929531 (1960-03-01), Kohlins
patent: 3028874 (1962-04-01), Burkett
patent: 5014737 (1991-05-01), Berman
patent: 5054519 (1991-10-01), Berman
patent: 5056552 (1991-10-01), Berman

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