Heat exchanger and vehicle heating device comprising a heat exchanger
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Solution Overview
Problem
Existing heat exchangers for vehicle heating devices face challenges in optimizing the design to accommodate a temperature sensor without compromising the size of the heat input surface or increasing heat loading on electronics, while also ensuring electromagnetic compatibility.
Innovation Solution
A heat exchanger design with a temperature sensor integrated in a depression on the heat output surface allows for a larger heat input surface, reduced electrical connection lengths, and improved electromagnetic compatibility, using a ceramic sleeve for insulation and a metallic heating element with a ceramic insulation layer for efficient heat transfer and mechanical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the temperature sensor is arranged on the heat input surface side, then the heat input surface area is reduced, but the temperature sensor can be easily accessed
Solution Approach 1:
The temperature sensor is moved from the traditional heat input surface location to the heat output surface depression, utilizing the third dimension (depth of the heat exchanger body) to resolve the conflict between maximizing heat input surface area and maintaining temperature sensor accessibility
2Area of stationary object
If the temperature sensor is arranged in a depression on the heat output surface, then the heat input surface area is maximized, but the electrical connection lines become longer
Solution Approach 1:
By placing the temperature sensor in a depression on the heat output surface rather than on the opposite heat input surface, the electrical connection lines can be routed through the thickness of the heat exchanger body, significantly reducing line length and improving electromagnetic compatibility
3Ease of operation
If the control device is arranged on the heat input surface side, then the temperature sensor accessibility is improved, but the electronics experience higher heat loading
Solution Approach 1:
The control device is extracted from the heat input surface side and relocated to the heat output surface side, separating the electronics from the high-temperature heating element region and reducing heat loading on sensitive electronic components
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 design enhances the heating capacity, reduces space requirements, and improves electromagnetic compatibility by allowing a larger heat input surface and shorter electrical connections, while maintaining mechanical stability and efficient heat transfer.
Implementation Method 1
an electrical heating element arranged on the heat input surface
Implementation Method 2
a heat input surface and an opposite heat output surface... The body of the heat exchanger can comprise a metallic material... which is readily heat-conductive
Data Source
AI summary
A heat exchanger includes a temperature sensor for a vehicle heating device, a heat input surface, an electrical heating element arranged on the heat input surface, and a heat output surface. The temperature sensor is arranged in a depression on the heat output surface.