Fluid heater with main housing and surrounding auxiliary housing defining a pressure resistant compartment therebetween
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United States of America Patent
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Oct 29, 1996
Grant Date -
N/A
app pub date -
Jan 7, 1994
filing date -
Jan 7, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A heater for fluids has a main housing part which is provided with flow channels for a fluid to be heated. The main housing part is surrounded by an auxiliary housing part, and the housing parts cooperate to define a compartment which is capable of containing sparks, flames and explosions. The compartment communicates with the atmosphere via one or more gaps too narrow to be penetrated by sparks and flames. The compartment further communicates with a chamber which is provided in the auxiliary housing part for switching elements. A heating foil is adhesively secured to one surface of the compartment so as to lie flat against such surface.
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