Electric heating device

Patent metadata

Field	Value
Publication number	US-12356509-B2
Application number	US-202117321935-A
Country	US
Kind code	B2
Filing date	May 17, 2021
Priority date	May 18, 2020
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

An electric heating device comprises a housing with a partition wall which separates a connection chamber from a heating chamber for dissipating heat and from which at least one heating rib protrudes in the direction toward the heating chamber and forms a receiving pocket. A PTC heating device is received in the receiving pocket and includes at least one PTC element and conductor tracks which are electrically connected in the connection chamber for energizing the PTC element with different polarities and which are connected to PTC element r in an electrically conductive manner. A profile member is provided between the PTC heating device and an inner side of the receiving pocket and is connected to the receiving pocket by way of a tongue and groove connection which extends in the direction of insertion of the receiving pocket.

First claim

The invention claimed is:

1. An electric heating device comprising:
a housing with a partition wall which separates a connection chamber from a heating chamber for dissipating heat, wherein at least one heating rib protrudes from the partition wall in a direction toward the heating chamber and forms a receiving pocket;
a PTC heating device received in the receiving pocket, the PTC heating device including at least one PTC element and conductor tracks that are electrically connected in the connection chamber for energizing the PTC element with different polarities, the conductor tracks being connected to the PTC element in an electrically conductive manner, wherein a profile member is provided between the PTC heating device and an inner side of the receiving pocket and is connected to the receiving pocket by way of a plurality of tongue and groove connections which extend in a direction of insertion of the receiving pocket and which effect heat extraction from the PTC element up to an outer surface of the heating rib.

2. The electric heating device according to claim 1 , wherein the profile member forms a U-shaped receptacle that opens towards the connection chamber for the PTC heating device.

3. The electric heating device according to claim 1 , wherein the PTC element has main side surfaces, and wherein the plurality of tongue and groove connections are provided between each main side surface of the PTC element and the inner side of the receiving pocket.

4. The electric heating device according to claim 1 , wherein the PTC element has main side surfaces, and wherein the plurality of tongue and groove connections are provided between one of the main side surfaces of the PTC element and an inner surface of the receiving pocket.

5. The electric heating device according to claim 1 , wherein at least one groove defining projection that defines the groove of the plurality tongue and groove connections is pivotable about an axis extending in the direction of insertion.

6. The electric heating device according to claim 1 , wherein at least one tongue projection that at least in part forms a tongue of the plurality of tongue and groove connections is pivotable about an axis extending in the direction of insertion.

7. The electric heating device according to claim 5 , wherein at least one tongue projection that at least in part forms a tongue of the plurality of tongue and groove connections is pivotable about an axis extending in the direction of insertion.

8. The electric heating device according to claim 1 , wherein at least one groove defining projection that defines the groove of the plurality of tongue and groove connections is tapered towards a free end thereof and is in a wedge shape.

9. The electric heating device according to claim 1 , wherein at least one tongue projection that at least in part forms a tongue of the plurality of tongue and groove connections is tapered towards a free end thereof and is in a wedge shape.

10. The electric heating device according to claim 8 , wherein at least one tongue projection that at least in part forms a tongue of the plurality of tongue and groove connections is tapered towards a free end thereof and is in a wedge shape.

11. The electric heating device according to claim 1 , wherein at least one groove defining projection that defines the groove of the plurality of tongue and groove connections is formed integrally on the receiving pocket.

12. The electric heating device according to claim 1 , wherein at least one tongue projection that at least in part forms a tongue of the plurality of tongue and groove connections is formed integrally on the receiving pocket.

13. The electric heating device according to claim 11 , wherein at least one tongue projection that at least in part forms a tongue of the plurality of tongue and groove connections is formed integrally on the receiving pocket.

14. The electric heating device according to claim 1 , wherein at least one compression element is provided between the profile member and a main side surface of the PTC element.

15. The electric heating device according to claim 1 , wherein curing adhesive is introduced into the receiving pocket and is at least in part received in one of the plurality of tongue and groove connections.

Assignees

• Eberspaecher Catem Gmbh & Co

Inventors

• Kachelhoffer Patrick

Classifications

• H05B2203/02

  Heaters using heating elements having a positive temperature coefficient · CPC title

• H05B2203/021

  Heaters specially adapted for heating liquids · CPC title

• H05B2203/016

  Heaters using particular connecting means · CPC title

• H05B2203/023

  Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system · CPC title

• H05B3/50

  heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins · CPC title