Method of manufacturing an electric heating device and electric heating devices

US8362406B2 · kind B2 · utility

Assignee

• Catem GmbH & Co. KG · DE

Inventors

• Franz Bohlender · Kandel, DE
• Michael Niederer · Bad Bergzabern, DE
• Michael Zeyen · Herxheim, DE
• Rainer Wuenstel · Hamburg, DE
• Detlef Stephan · Naumburg, DE

Key dates

• Filing date: Jul 17, 2008
• Grant date: Jan 29, 2013
• Expiry date: Nov 29, 2031

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 electric heater, comprises a heating block held in a housing and including parallel layers of heat-emitting and heat generating elements. A grid arrangement covers the respective frame apertures in the housing and reinforces the housing. First struts of the grid arrangement, extending at right angles with respect to the layers, are assigned to the housing, and second struts extending parallel with respect to the layers are defined by the heating block. Moreover, a heat generating element of an electric heater, comprises a position frame made of an insulating material and defining receptacles arranged side by side each for at least one PTC heating element. The receptacles are arranged between conductor paths against which the PTC heating elements are placed in an electrically conductive manner.