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1. (WO2018202741) ELECTRIC HEATING DEVICE, AND METHOD FOR DETECTING AN OVERHEATING OF SUCH AN ELECTRIC HEATING DEVICE

Pub. No.:    WO/2018/202741    International Application No.:    PCT/EP2018/061274
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Fri May 04 01:59:59 CEST 2018
IPC: H05B 3/48
H05B 1/02
Applicants: DBK DAVID + BAADER GMBH
Inventors: LOHR, Jürgen
KUMMLER, Marcus
Title: ELECTRIC HEATING DEVICE, AND METHOD FOR DETECTING AN OVERHEATING OF SUCH AN ELECTRIC HEATING DEVICE
Abstract:
The invention relates to an electric heating device for heating a fluid, wherein the heating device has an electric heating element (2) and a casing (3) for the electric heating element (2), said casing consisting at least partly of an electrically conductive material. The electric heating element (2) is arranged in the casing (3), and an electrically insulating filler (8) is provided between the electric heating element (2) and the casing (3), said filler insulating the electric heating element (2) from the casing (3). An analysis device (10) is provided which is designed to measure an insulation resistance between the electric heating element (2) and the casing (3), compare the measured value of the insulation resistance with a reference value, and detect an overheating of the electric heating device (1) if the measured value of the insulation resistance exceeds the reference value. The invention further relates to a method for detecting an overheating of such an electric heating device (1).