Title:
PURGED GROUNDED IMMERSION HEATER
Document Type and Number:
WIPO Patent Application WO1998016783
Kind Code:
A8
Abstract:
An immersion heater for corrosive fluids includes an electrically resistive material strand (80) operative upon connection to a source of power to provide heat. A thermally conductive electrically insulating fill material (84) is disposed around the electrically resistive material strand (80). An electrically conductive sheath (90) encases the fill material (80). A tubular jacket (108) of a flexible chemically inert material encases the electrically conductive sheath (90). A fluid flow passage (106) is defined between the tubular jacket (108) and the sheath (90) for allowing a fluid to flow therethrough. The fluid is a purge gas that flows between the sheath (90) and the jacket (108) in order to remove any corrosive fluid which may have penetrated the jacket (108). A method for manufacturing an immersion heater is also disclosed.
Inventors:
YANE DARYL J
BASE HOWARD J
BASE HOWARD J
Application Number:
PCT/US1997/018816
Publication Date:
June 15, 2000
Filing Date:
October 10, 1997
Export Citation:
Assignee:
LUFRAN INC (US)
International Classes:
F24H1/10; (IPC1-7): F24H1/10
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