Electric resistance heating devices – Heating devices – Immersion heater details
Patent
1997-10-10
1999-02-23
Jeffery, John A.
Electric resistance heating devices
Heating devices
Immersion heater details
392488, 219523, 219544, 338214, H05B 304
Patent
active
058752838
ABSTRACT:
An immersion heater for corrosive fluids includes an electrically resistive material strand operative upon connection to a source of power to provide heat. A thermally conductive electrically insulating fill material is disposed around the electrically resistive material strand. An electrically conductive sheath encases the fill material. A tubular jacket of a flexible chemically inert material encases the electrically conductive sheath. A fluid flow passage is defined between the tubular jacket and the sheath for allowing a fluid to flow therethrough. The fluid is a purge gas that flows between the sheath and the jacket in order to remove any corrosive fluid which may have penetrated the jacket. A method for manufacturing an immersion heater is also disclosed.
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Page from Lufran catalog entitled "Reliable Heating/Cooling Equipment for the Metal Finishing Industry" (Form RHC/1194).
Page from Lufran catalog entitled "Nine Element over the Side Teflon Immersion Heaters".
Two pages from Lufran catalog entitled "Why Purge?" (Form LP892).
Two pages from Lufran catalog entitled "6TFM Over-the-Side Teflon Heater 6 Element" (Form 6TFM693).
Article entitled "Solving the Teflon-Permeation Problem" from Process Heating publication of Business News Publishing Co. (Sep./Oct. 1994 issue) .
Base Howard J.
Yane Daryl J.
Jeffery John A.
Lufran Incorporated
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