Matrix PCB Heating Unit for Uniform Air Heat Exchange
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Solution Overview
Problem
Conventional temperature control systems in medical apparatuses have inefficient heat exchange due to non-uniform temperature distribution on heat dissipating fins, leading to decreased accuracy in chemical reactions and higher manufacturing costs.
Innovation Solution
A heating unit with a substrate and multiple electronic components arranged in a matrix form on a printed circuit board, where each component can produce heat to directly heat air, increasing the contact area and heat exchange capacity, and the heating power is adaptively adjusted along the board to maintain efficient temperature differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a conventional resistive heating plate with heat dissipating fins is used, then heat can be generated and transferred to air, but the temperature distribution on the heat dissipating fins is non-uniform causing decreased heat exchange efficiency
Solution Approach 1:
The heating system is segmented into multiple independent heating zones, each with its own heating element and control. The heat dissipating fins are divided into multiple sections corresponding to different heating zones, allowing each section to be independently controlled for optimal temperature distribution and heat exchange efficiency.
Solution Approach 2:
Different regions of the heating system are assigned different heating powers and temperature characteristics based on local requirements. The control system adjusts heating parameters locally in each zone to maintain uniform temperature distribution across all heat dissipating fins, maximizing overall heat exchange efficiency.
2Temperature
If a heating plate with heat dissipating fins is used, then heat can be transferred to air, but the region near the heating plate has higher temperatures and the region away has lower temperatures decreasing heat exchange efficiency
Solution Approach 1:
The heating system employs dynamic control where heating powers are continuously adjusted based on real-time temperature feedback from sensors. The control system modifies heating parameters dynamically to maintain uniform temperature distribution across different regions, preventing energy loss due to temperature non-uniformity.
Solution Approach 2:
Temperature sensors are placed at multiple locations including near and far from the heating plate to monitor temperature distribution. The control system uses this feedback information to adjust heating powers dynamically, ensuring uniform temperature distribution and maximizing heat exchange efficiency.
3Area of stationary object
If electronic components are arranged in matrix form on substrate, then contact area with air is increased improving heat exchange capacity, but device complexity increases
Solution Approach 1:
Multiple heating elements are merged onto a single substrate in a matrix arrangement, sharing common support structures and control circuits. This integration increases the total contact area with air while managing device complexity through shared components and standardized mounting patterns.
Solution Approach 2:
The substrate serves multiple functions: mechanical support for heating elements, electrical connection pathway, thermal distribution medium, and structural framework. This multi-functionality reduces the need for separate components, increasing contact area while controlling overall device complexity.
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 heat exchange efficiency and reduces manufacturing costs by directly transferring heat to air without a medium, ensuring uniform heating and compatibility with various heating systems.
Implementation Method 1
each of the electronic components is capable of individually producing heat to directly heat up air around the electronic components
Data Source
AI summary
A heating system is disclosed, which includes a main body having a duct formed therein, an air flowing guiding member, and a heating unit. The duct has an air inlet and an air outlet. The air flowing guiding member is disposed in the duct. The heating unit includes a substrate and a plurality of electronic components disposed on the substrate in a matrix form and embossed from a surface of the substrate, wherein each of the electronic components is capable of individually producing heat to directly heat up the air flowing in the duct. Also a heating system using the heating unit is disclosed.