Electric heating device with heating zones
AssigneeCatem GmbH & Co. KG
InventorsFranz Bohlender, Maurice Clauss, Michael Niederer
Life of this patent
Estimating the term…
Abstract
An electric heating device is adapted to be used in particular as an auxiliary electric heating for motor vehicles. The heating device comprises a plurality of PTC heating elements arranged in a plane of said heating device. The PTC heating elements are in electric contact with contact sheets for supplying current thereto and in thermal contact with radiator elements for transferring the heat produced to an air current to be heated. According to the present invention, the PTC heating elements arranged in this plane are adapted to be controlled separately in at least two groups.
Claims41
An electric heating device, in particular for use as an auxiliary electric heating for motor vehicles, comprising a plurality of PTC heating elements arranged in a plane in said heating device, at least one radiator element and contact sheets for a current supply,
- wherein said PTC heating elements are separately controllable in at least two groups.
An auxiliary electric heating device for motor vehicles, comprising:
- a plurality of coplanar PTC heating elements,
- at least one radiator element in thermal communication with at least one of said PTC heating elements;
- and
- contacts configured to supply electrical current to said PTC heating elements,
- wherein said PTC heating elements are separately controllable in at least two groups.
Dependencies are inferred from the claim text.