Electric heating device for motor vehicles

US7667165B2 · kind B2 · utility

Assignee

• Catem GmbH & Co., LG · DE

Inventors

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

Key dates

• Filing date: Feb 9, 2005
• Grant date: Feb 23, 2010
• Expiry date: Oct 25, 2025

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F24H9/1872
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

An auxiliary heater for motor vehicles includes an open housing accommodating a layered structure which includes at least one radiator element and at least one heat-emitting element having at least one PTC heating element, and further accommodating at least one spring element pretensioning the layered structure, a plurality of contacts being held in said housing in an insulating manner and electrically connected to the at least one PTC heating element. The layered structure is pretensioned by a displacer which is inserted into a lower housing component when the elements of the layered structure have been inserted in the lower housing component in a tension-free manner. The displacer is inserted into the lower housing component in a direction approximately perpendicular to the plane of the layered structure and, in the mounted position, it is secured in position relative to said lower housing component.