Patent ID: 11912106
Assignee: EBERSPäCHER CATEM GMBH & CO. KG
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC B  F  H | IPC B  F  H

Claim 17:
18. An electric heating device for a motor vehicle, comprising:
a housing having an inlet opening and an outlet opening for a medium to be heated, wherein
the housing encloses a layered structure comprising at least one PTC element which is electrically conductively connected to connections of different polarity, and which comprises heat-emitting elements that are heat conductively connected on opposed sides to the PTC element;
wherein the heat-emitting elements include a panel element that is provided with perforations in the form of a mesh wire or an expanded metal or a perforated sheet and that is made of heat-conducting material, wherein the perforations are distributed throughout the entire panel element at a regular interval with no space among them; and, wherein each of the heat-emitting elements is formed of at least one track of the perforated panel element, which track is meanderingly bent;
wherein main side surfaces of the meanderingly bent track are connected to one another via webs which are arranged in two planes lying parallel to a heat-emitting main side surface of the PTC element; and
wherein the webs are arranged side by side in a direction transverse to a direction of penetration of the medium to be heated.