Electric heating device

Patent metadata

Field	Value
Publication number	US-12298012-B2
Application number	US-202017132633-A
Country	US
Kind code	B2
Filing date	Dec 23, 2020
Priority date	Dec 27, 2019
Publication date	May 13, 2025
Grant date	May 13, 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 PTC heating device protrudes as a heating fin in the direction toward the heating chamber. The PTC heating device comprises at least one PTC element electrically connected to conductor tracks in the connection chamber. A temperature sensor is connected, in terms of data, to a control device and is accommodated in a sealed manner in a temperature sensor receptacle which is formed in a wall delimiting the heating chamber. The temperature sensor is accommodated in a sliding manner in the temperature sensor receptacle. A support prevents the temperature sensor from sliding out of the temperature sensor receptacle and/or directly plugs a temperature sensor contact element of the temperature sensor in the connection chamber into a printed circuit board.

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;
at least one PTC heating device which protrudes from the housing as a heating fin in a direction toward the heating chamber, wherein the PTC heating device comprises at least one PTC element and conductor tracks, that are electrically conductively connected to the PTC element in the connection chamber, for energizing the PTC element; and
a temperature sensor which is connected to a control device, and which is accommodated in a sealed manner in a temperature sensor receptacle which is formed in a wall delimiting the heating chamber, wherein the temperature sensor is accommodated in a sliding manner in the temperature sensor receptacle, and wherein a support, cooperating with the temperature sensor, is provided for the temperature sensor and prevents the temperature sensor from sliding out of the temperature sensor receptacle, and wherein the support is provided outside the temperature sensor receptacle, and wherein the support is provided on a side of the housing opposite the heating chamber and the wall.

2. The electric heating device according to claim 1 , wherein at least one temperature sensor contact element of the temperature sensor is exposed in the connection chamber and is plugged into a printed circuit board arranged in the connection chamber.

3. An electric heating device comprising:
a housing with a partition wall which separates a connection chamber from a heating chamber for dissipating heat;
at least one PTC heating device which protrudes from the housing as a heating fin in a direction toward the heating chamber, wherein the PTC heating device comprises at least one PTC element and conductor tracks, that are electrically conductively connected to the PTC element in the connection chamber, for energizing the PTC element; and
a temperature sensor which is connected to a control device, and which is accommodated in a sealed manner in a temperature sensor receptacle which is formed in a wall delimiting the heating chamber, wherein the temperature sensor is accommodated in a sliding manner in the temperature sensor receptacle, and wherein a support, cooperating with the temperature sensor, is provided for the temperature sensor and prevents the temperature sensor from sliding out of the temperature sensor receptacle, and wherein the support is provided outside the temperature sensor receptacle, and wherein the temperature sensor has at least one temperature sensor contact element which is plugged into a printed circuit board, and a retaining projection which protrudes through the printed circuit board and which is received in a guide bore which is recessed in the printed circuit board.

4. The electric heating device according to claim 1 , wherein the support is provided on a housing cover which covers a chamber accommodating the circuit board.

5. The electric heating device according to claim 4 , wherein the housing cover is connected in a form-fitting manner with a housing upper part enclosing the printed circuit board between itself and the housing cover.

6. The electric heating device according to claim 4 , wherein the housing cover is formed from a stamped-bent sheet metal element having a support projection protruding in a direction toward the temperature sensor and interacting with a retaining projection of the temperature sensor.

7. An electric heating device comprising:
a housing with a partition wall which separates a connection chamber from a heating chamber for dissipating heat;
at least one PTC heating device which protrudes as a heating fin from the housing in a direction toward the heating chamber, wherein the PTC heating device comprises at least one PTC element and conductor tracks which are electrically conductively connected to the PTC element in the connection chamber and which are configured to energize the PTC element, and
a temperature sensor which is connected to a control device and which is accommodated in a sealed manner in a temperature sensor receptacle which is formed in a wall of the housing delimiting the heating chamber, wherein at least one temperature sensor contact element of the temperature sensor is exposed in the connection chamber and is plugged into a printed circuit board arranged in the connection chamber; and
wherein the temperature sensor has at least one temperature sensor contact element which is plugged into a printed circuit board, and a retaining projection which protrudes through the printed circuit board and which is received in a guide bore which is recessed in the printed circuit board.

8. The electric heating device according to claim 7 , wherein the temperature sensor is accommodated in a sliding manner in the temperature sensor receptacle, and wherein a support, cooperating with the temperature sensor, is provided for the temperature sensor, which support prevents the temperature sensor from sliding out of the temperature sensor receptacle.

9. The electric heating device according to claim 8 , wherein the support is provided on a side of the housing opposite the heating chamber and the wall.

10. The electric heating device according to claim 9 , wherein the support is provided on a housing cover which covers a chamber accommodating the circuit board.

11. The electric heating device according to claim 10 , wherein the housing cover is connected in a form-fitting manner with a housing upper part enclosing the printed circuit board between itself and the housing cover.

12. The electric heating device according to claim 10 , wherein the housing cover is formed from a stamped-bent sheet metal element having a support projection protruding in a direction toward the temperature sensor and interacting with a retaining projection of the temperature sensor.

13. The electric heating device according to claim 1 , wherein the temperature sensor receptacle includes a collar, and wherein a region of the temperature sensor receptacle after the collar has a smaller diameter than a region of the temperature sensor receptacle before the collar.

Assignees

• Eberspaecher Catem Gmbh & Co

Inventors

• Niederer Michael

Classifications

• H05B2203/021

  Heaters specially adapted for heating liquids · CPC title

• H05B2203/02

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

• H05B2203/016

  Heaters using particular connecting means · CPC title

• H05B1/0236

  for vehicles · CPC title

• F24C7/088

  on stoves · CPC title