Heating device with PTC resistors non-abrasively positioned in a

Details Heating device with PTC resistors non-abrasively positioned in a Heating device with PTC resistors non-abrasively positioned in a

1992-08-10

1993-11-16

Bartis, Anthony

Electric resistance heating devices

Heating devices

Continuous flow type fluid heater

219505, 219530, 219541, 219544, 338 22R, 392484, H05B 102, H05B 314, H01C 702

Patent

active

052626199

ABSTRACT:
A heating device for heating flowing media includes a heat exchanger to be heated by PTC resistors. The heat exchanger is formed of thermally conductive metal having a slit-like pocket formed therein defining a given shape and defining pocket surfaces facing one another. A cuboid substrate body has a shape adapted to the given shape and an introduction side to be introduced into the pocket. The substrate body has opposed surfaces with recesses formed therein for receiving the PTC resistors and an internal conduit formed therein for receiving a contact spring. At least the surfaces of the substrate body having the recesses and the pocket surfaces facing the surfaces of the substrate body are beveled for decreasing the cross section of the substrate body and of the pocket from the introduction side inward, and for pressing the PTC resistors against the pocket surfaces upon introduction of the substrate body into the pocket with the PTC resistors located in the recesses.

REFERENCES:
patent: 4371778 (1983-02-01), Meixner
patent: 4395623 (1983-07-01), Shimada et al.
patent: 4626666 (1986-12-01), Maeda et al.
patent: 4700050 (1987-10-01), Hennuy et al.
patent: 4899032 (1990-02-01), Schwarzl et al.
patent: 4998008 (1991-03-01), Menhardt
patent: 5086747 (1992-02-01), Curhan
patent: 5142265 (1992-08-01), Motoyoshi et al.

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