US 11,912,106 B2
Electric heating device
Kurt Walz, Hagenbach (DE); Michael Niederer, Kapellen-Drusweiler (DE); Ahmad Asafi, Karlsruhe (DE); and Patrick Kachelhoffer, Seebach (FR)
Assigned to Eberspächer catem GmbH & Co. KG, Herxheim (DE)
Filed by Eberspächer catem GmbH & Co. KG, Herxheim (DE)
Filed on Dec. 3, 2019, as Appl. No. 16/701,861.
Claims priority of application No. 10 2018 220 858.1 (DE), filed on Dec. 3, 2018.
Prior Publication US 2020/0171920 A1, Jun. 4, 2020
Int. Cl. F24H 3/04 (2022.01); B60H 1/22 (2006.01); H05B 3/06 (2006.01); H05B 3/30 (2006.01); H05B 3/00 (2006.01); H05B 3/34 (2006.01)
CPC B60H 1/2225 (2013.01) [F24H 3/0435 (2013.01); H05B 3/0014 (2013.01); H05B 3/06 (2013.01); H05B 3/34 (2013.01); B60H 2001/2228 (2013.01); H05B 2203/02 (2013.01)] 18 Claims
OG exemplary drawing
 
1. 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; and
wherein the panel element forms each heat-emitting element and a conducting element which electrically conductively abuts the PTC element.