Heating device for heating passenger space of e.g. electric car, has pipe that is resiliently deformable such that surface of pipe is stressed against surface of heating element, where surface of heating element abuts at surface of pipe

摘要

#CMT# #/CMT# The device (100) has an electrical heating element (105) for converting electric power into heating energy, and a pipe (101) i.e. thin walled metallic pipe, for feeding liquid i.e. motor cooling fluid, to be heated to the heating element. A surface (105b) of the heating element abuts at a surface (101a) of the pipe. The pipe is resiliently deformable such that the surface of the pipe is stressed against the surface of the heating element. Electrical insulators (107, 108) are provided between electric voltage conductive components of the heating element and the pipe. #CMT#USE : #/CMT# Heating device for heating passenger space of an electrical vehicle e.g. pure electrical propelled road vehicle such as electric car, and hybrid vehicle comprising an electric drive motor. #CMT#ADVANTAGE : #/CMT# The surface of the pipe is stressed against the surface of the electrical heating element, so that the electrical heating element and the pipe are pushed against each other for feeding the liquid, thus ensuring simultaneously an improved thermal contact between the electrical heating element and the pipe and an improved mechanical fixation of the electrical heating element. The device does not require a supplementary power source such as voltage applying element for supplying voltage for pressing the electrical heating element against the pipe, thus ensuring an improved and reliable thermal contact in most diverse operating modes. The device is provided with multiple pipes that are merged firmly into a liquid circuit and/or a collecting tank, so that the problem caused by using a single pipe can be avoided. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic sectional view of a heating device in a direction vertical to a direction of flow in liquid-containing pipes. 100 : Heating device 101, 102, 103 : Pipes 101a : Surface of pipe 105 : Electrical heating element 105b : Surface of electrical heating element 107, 108 : Electrical insulators.