Heater Device Air Layer Insulation to Reduce Contact Heat Transfer
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Solution Overview
Problem
Conventional heater devices with thick main bodies tend to increase heat capacity, leading to excessive heat transfer to objects in contact, which impairs the temperature reduction effect at the touched parts.
Innovation Solution
Incorporating a sheet-shaped main body with a heat generating portion and a plate-shaped member separated by an air layer forming member, which suppresses heat transfer between the main body and the plate-shaped member, thereby reducing the heat transfer to the object in contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the thickness of the main body increases, then the heat capacity of the heater device increases, but the heat transfer amount from the heater device to the object increases excessively
Solution Approach 1:
The patent introduces a plate-shaped member as an intermediary component between the main body and the external environment. This plate-shaped member acts as a thermal mediator that manages heat distribution, allowing the thick main body to maintain its heat capacity while preventing excessive heat transfer to objects in contact with the heater device.
Solution Approach 2:
The heater device is segmented into distinct functional components: the main body with heat generating portions, and a separate plate-shaped member. This segmentation allows independent optimization of each component's thermal properties, enabling the main body to have sufficient heat capacity while the plate-shaped member controls the heat transfer interface.
2Quantity of substance
If the thickness of the heater device increases, then the heat capacity increases, but the temperature reduction effect at the touched parts is impaired
Solution Approach 1:
The plate-shaped member serves as a thermal intermediary that decouples the heat capacity function from the temperature control function. It allows the thick main body to store sufficient heat while managing the thermal interaction at the contact surface, thereby maintaining effective temperature reduction at touched parts.
Solution Approach 2:
The patent applies different thermal characteristics to different parts of the heater device. The main body has high heat capacity for thermal storage, while the plate-shaped member has specific thermal properties optimized for controlling local temperature at the contact surface, creating local quality differentiation.
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 air layer effectively reduces heat transfer from the heater device to the object, even with a thick heater body, maintaining temperature reduction at the touched parts and preventing thermal discomfort.
Implementation Method 1
an air layer forming member configured to form an air layer between the main body and the plate shaped member
Implementation Method 2
a heat generating portion heated by energization and a radiating surface configured to radiate radiant heat toward a heating object by using heat in the heat generating portion
Data Source
AI summary
The heater device has a sheet shaped main body having a heat generating portion heated by energization and a radiating surface for radiating radiant heat toward a heating object by using heat in the heat generating portion, a plate shaped member arranged on an opposite side with respect to the radiating surface of the main body, and an air layer forming member for forming an air layer between the main body and the plate shaped member arranged on a side opposite to the radiating surface of the main body.