Heat exchange device and heating device
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Solution Overview
Problem
Existing heating devices for motor vehicles face inefficiencies in heating fluid media, as they lack an optimized structure for heat transfer, leading to suboptimal heat output and pressure drop issues.
Innovation Solution
A heat exchanger device with a housing containing fluid channels, alternating magnetic field elements, and metallic surface heating elements that absorb and transfer heat efficiently, featuring cross-mixing elements and geometric designs to enhance fluid flow and heat dissipation, while minimizing pressure drop.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single fluid channel is used in heating devices, then the structure is simple, but the heat transfer efficiency is insufficient and pressure drop is high
Solution Approach 1:
The single fluid channel is divided into multiple sub-channels by partition walls, increasing the heat transfer surface area and improving heat transfer efficiency. The fluid flow is distributed across multiple parallel paths, reducing the pressure drop while maintaining high productivity.
2Productivity
If heating surface area is increased to improve heat transfer, then heat output is improved, but pressure drop increases
Solution Approach 1:
The heating surface is segmented into multiple sub-channels with partition walls, distributing the fluid flow across parallel paths. This increases the effective heat transfer area while maintaining low pressure drop through balanced flow distribution.
Solution Approach 2:
Different regions of the fluid channel are optimized locally - sub-channels are designed with specific geometries and partition wall configurations to enhance heat transfer in high-demand areas while maintaining smooth flow paths to minimize pressure drop.
3Productivity
If fluid flow velocity is increased to improve heat transfer, then heat dissipation is improved, but pressure drop increases significantly
Solution Approach 1:
The fluid channel is segmented into multiple sub-channels, allowing the total flow rate to be distributed across parallel paths. This maintains adequate heat dissipation through sufficient velocity in each sub-channel while reducing the overall pressure drop by distributing the flow burden.
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
The solution optimizes heat transfer to fluid media by dividing fluid channels into sub-channels, improving flow dynamics and heat dissipation, and reducing pressure drop, thereby enhancing the heating device's efficiency and performance.
Implementation Method 1
an element that generates an alternating magnetic field and at least one metallic first hollow-cylindrical surface heating element around which a fluid can flow on both sides... The at least one and the additional surface element are heated by the alternating magnetic field
Implementation Method 2
can transfer their heat to the fluid flowing around the at least one and the additional surface heating element
Data Source
Figure 1a~1b
Figure 2
Figure 3
AI summary
The invention relates to a heat exchanger device (12, 90) for a heating device (10), in particular of a motor vehicle, comprising a housing (30) with at least one fluid channel (46, 52, 62, 66, 108, 111, 113, 116) arranged therein, with a fluid inlet (14, 93) and a fluid outlet (16, 94), an element (32) generating an alternating magnetic field and at least one preferably metallic surface heating element (24, 26, 28, 91, 95, 101) around which a fluid can flow on one or both sides, wherein at least one further surface heating element (28, 91) is provided which is configured to divide the at least one fluid channel (66, 116) into sub-channels (70a, 70b). The invention also relates to a heating device (10) with a heat exchanger device (12, 90).