Electrical heating device

US9161391B2 · kind B2 · utility

Assignee

• Eberspächer Catem GmbH & Co. · DE

Inventors

• Michael Niederer · Bad Bergzabern, DE
• Franz Bohlender · Kandel, DE

Key dates

• Filing date: Sep 30, 2011
• Grant date: Oct 13, 2015
• Expiry date: Jul 15, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05B2203/023
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

An electrical heating device includes a housing, which encloses a circulation chamber through which a medium can flow and into which heating ribs extend essentially parallel to one another. Each of the ribs has a U-shaped recess which opens into a uniform connecting chamber, which is separated from the circulation chamber by a partition wall provided in the region of the open ends of the U-shaped recesses, and which accommodates at least one PTC heating element that abuts oppositely situated inner sides of the U-shaped recess in heat-conducting contact. The heating ribs protrude inwards alternately from the oppositely situated inner sides of the housing. A flow passage of a meander-type flow channel is formed in the housing between the free ends of the heating ribs and the adjacent inner wall of the housing. The flow passage is closed off by a covering element on the side oppositely situated to the partition wall.