Film type planar heating element for preventing electromagnetic waves
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Film type planar heating elements generate electromagnetic waves due to electrical conductors like carbon paste and copper foil, posing safety concerns for infants and the elderly, and existing solutions do not adequately cancel these waves when electrodes are placed on both sides of the carbon layer.
Innovation Solution
A film type planar heating element with center-adjacent copper foil busbars facing each other closely on a base film, along with center silver busbars and a middle-adjacent copper foil busbar, to cancel electromagnetic wave intensities and magnetic fields, while ensuring efficient heat distribution and preventing sparks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional electrode parts are installed on both sides of the carbon layer to supply power, then the heating element can generate heat effectively, but electromagnetic waves and magnetic fields are formed in a wide and long range causing safety concerns
Solution Approach 1:
The patent applies conductive parts that generate electromagnetic waves in opposite phase to cancel the harmful electromagnetic waves from the electrode parts. By utilizing the same physical phenomenon (electromagnetic wave generation) but in opposite phase, the harmful effect is converted into a beneficial cancellation effect, reducing electromagnetic radiation to safe levels while maintaining heating capability
Solution Approach 2:
The conductive parts act as intermediary elements between the electrode parts and the surrounding environment. These intermediaries generate counter-phase electromagnetic fields that neutralize the harmful effects of the electrode parts, allowing the heating element to function effectively without causing electromagnetic radiation issues
2Object-affected harmful factors
If copper foil busbars are placed close together in the center to cancel electromagnetic waves, then electromagnetic radiation is reduced, but the structure becomes more complex
Solution Approach 1:
The patent combines the functions of electromagnetic wave cancellation and current conduction into integrated conductive parts. By merging these functions, the structure achieves electromagnetic shielding without requiring separate complex cancellation mechanisms, thus reducing overall structural complexity while maintaining effectiveness
Solution Approach 2:
The conductive parts are strategically positioned only in specific locations where electromagnetic wave cancellation is most effective, rather than uniformly distributing components throughout the structure. This localized approach reduces the overall number of components and simplifies the structure while achieving the desired electromagnetic shielding effect
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 allows for safe operation by canceling electromagnetic waves, improving heating efficiency, and preventing sparks, enabling the heating element to effectively heat large areas without generating electromagnetic waves.
Implementation Method 1
a pair of center-adjacent copper foil busbars disposed in a center area of the base film, applying current to the carbon heating unit, and facing each other in a close distance so that intensities of electromagnetic waves and magnetic field are mutually canceled each other when the current is applied
Implementation Method 2
this far-infrared radiation brings an ideal heating effect. It also has deodorizing and bacterial growth inhibitory effects, and provides a healthy and comfortable heating environment by increasing metabolism of the human body
Implementation Method 3
this film type planar heating element emits far-infrared radiation and negative ions by generating heat caused by electrical resistance of carbon
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A film type planar heating element for preventing electromagnetic waves is configured in a form of multiple layers of films to generate heat, the film type planar heating element comprising: a base film made of synthetic resin and mounted on a floor in a form of sheet film; a carbon heating unit made of carbon materials and arranged in multiple rows to generate heat planarly on a top side of the base film; a pair of center-adjacent copper foil busbars disposed in a center area of the base film, applying current to the carbon heating unit, and facing each other in a close distance so that intensities of electromagnetic waves and magnetic field are mutually canceled each other when the current is applied; a pair of center silver busbars formed between the carbon heating unit and the center-adjacent copper foil busbars and made of silver materials allowing the current, which is applied to the center-adjacent copper foil busbars, to smoothly flow to the carbon heating unit, and a Lamirex film coated on the top side of the base film to protect the carbon heating unit and the center-adjacent copper foil busbars.