Electric heating device
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Solution Overview
Problem
Existing electrical heating devices face challenges in securely and effectively accommodating temperature sensors within a sealed environment, particularly in vehicles where vibrations can cause loose connections, compromising the sealing and accuracy of temperature measurements.
Innovation Solution
The temperature sensor is provided in a sliding manner within a temperature sensor receptacle, supported by a cylindrical wall and a stop to prevent sliding out, allowing axial movement without compromising the seal, and is connected to a printed circuit board with a guide bore for precise positioning, ensuring secure and sealed operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the temperature sensor is allowed to move axially, then the temperature sensor can accommodate vibrations, but the temperature sensor may slide out of the receptacle
Solution Approach 1:
The temperature sensor is designed to be movable in the axial direction within the temperature sensor receptacle, allowing it to dynamically adjust its position. This dynamic design prevents the sensor from becoming loose due to vibrations while maintaining secure positioning through the interaction of the support projection and guide bore mechanism.
Solution Approach 2:
The support projection and guide bore are pre-configured to interact before any problematic movement occurs. This preliminary arrangement ensures that the temperature sensor is guided and retained properly, preventing it from sliding out while still allowing necessary axial movement to accommodate vibrations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution ensures the temperature sensor remains securely positioned and sealed within the receptacle, maintaining accurate temperature measurements and preventing accidental disconnection due to vibrations, while allowing for direct connection to the printed circuit board for efficient heat control.
Implementation Method 1
PTC heating device having a PTC element and, for energizing the PTC element with different polarity, conductor tracks
Implementation Method 2
a temperature sensor which is connected to a control device in terms of data and is accommodated in a sealed manner in a temperature sensor receptacle
Implementation Method 3
a partition wall which separates a connection chamber from a heating chamber for dissipating heat
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The present invention relates to an electric heating device (100) with a housing (102; 104; 500) with a partition (117) that separates a connection chamber (120) from a heating chamber (106) for heat emission and from which at least one PTC heating device (112) projects as a heating fin towards the heating chamber (106), wherein the PTC heating device (112) comprises at least one PTC element and conductive traces electrically connected to the PTC element with different polarities for supplying current to it, which are electrically connected in the connection chamber (120), and a temperature sensor which is data-connected to a control device (330) and sealed in a temperature sensor receptacle (506) formed in a wall (117) delimiting the heating chamber (106).To improve the reception and contact of the temperature sensor (400) on its connection side, the present invention proposes to receive the temperature sensor (400) slidably in the temperature sensor receptacle (506) and to provide a support (556, 560) that interacts with the temperature sensor (400) and prevents the temperature sensor (400) from sliding out of the temperature sensor receptacle (506) and/or to directly contact a temperature sensor contact element (404) of the temperature sensor (400) in the connection chamber (120) with a circuit board (300) located therein by means of a plug connection.