Fluid Heater Structure With Inner and Outer Heat Exchange Surfaces
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Solution Overview
Problem
The existing fluid-heating device has a limited heat transfer area due to direct contact between the fluid and the heat generating part of the heater, which restricts efficient heat exchange.
Innovation Solution
A fluid-heating device with a heater unit featuring a heating portion that covers the surrounding area, including an inner heat exchange surface within a through hole and an outer heat exchange surface on the outer wall, increasing the total surface area for heat exchange with the fluid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the heater is brought into direct contact with the fluid, then the heat exchange is simple and direct, but the heat transfer area is limited by the size of the heater
Solution Approach 1:
The heating portion extends in multiple spatial dimensions with inner and outer heat exchange surfaces, transforming a one-dimensional heater contact into a multi-dimensional heat transfer system. This allows the heat transfer area to exceed the physical footprint of the heater itself.
Solution Approach 2:
The through hole penetrates through the heater structure, creating a nested configuration where fluid can flow through the interior while the exterior surface also contacts fluid. This nested arrangement maximizes heat transfer area within the heater's volume.
2Area of stationary object
If the heating portion covers the surrounding area with inner and outer surfaces, then the heat transfer area increases, but the heater unit structure becomes more complex
Solution Approach 1:
The heating portion serves multiple functions simultaneously: it provides structural support for the heater, creates internal flow passages through the through hole, and presents both inner and outer heat exchange surfaces. This multi-functionality increases heat transfer area without adding separate components.
Solution Approach 2:
The heating portion is segmented into distinct functional zones: the through hole creating inner heat exchange surfaces, the outer wall providing outer heat exchange surfaces, and the connecting structures. This segmentation allows each zone to optimize heat transfer while maintaining overall structural integrity.
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 configuration enhances the heat transfer area, allowing for more efficient heating of the fluid compared to direct contact scenarios, with improved heat exchange efficiency and temperature consistency across flow channels.
Implementation Method 1
the inner heat exchange surface being configured to perform heat exchange with the fluid and an outer heat exchange surface formed on an outer-wall portion of an outer side of the heater, the outer heat exchange surface being configured to perform the heat exchange with the fluid
Data Source
AI summary
A fluid-heating device for heating fluid includes a heater unit configured to have a heater and a heating portion, the heating portion being formed as to cover surrounding of the heater, wherein the heating portion has an inner heat exchange surface formed on an inner surface of a through hole penetrating through an inner side of the heater and an outer heat exchange surface formed on an outer-wall portion of an outer side of the heater, the inner heat exchange surface being configured to perform heat exchange with the fluid, and the outer heat exchange surface being configured to perform the heat exchange with the fluid.