Seat heater
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Solution Overview
Problem
Conventional seat heaters in vehicles with high air permeability struggle to achieve efficient heating due to the higher output requirements of auxiliary heating wires, which do not effectively heat temperature rise prevention elements, especially in vehicles with lower engine heat emissions.
Innovation Solution
A seat heater design that includes a base material with high air permeability for the heating wire area and a cooling suppression part in the auxiliary heater area, which has lower air permeability, allowing for efficient heat dissipation suppression and temperature rise of the excessive temperature rise prevention element, facilitating higher output and comfortability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a base material with high air permeability is used for the heating wire area, then air permeability is improved, but the auxiliary heating wire cannot effectively heat the excessive temperature rise prevention element
Solution Approach 1:
The base material is designed with spatially varying air permeability: the heating wire area has high air permeability to allow air circulation and comfort, while the auxiliary heater area has low air permeability to concentrate heat on the excessive temperature rise prevention element. This local differentiation resolves the contradiction by allowing each region to have the air permeability characteristic needed for its specific function.
2Reliability
If the auxiliary heating wire output is increased to heat the excessive temperature rise prevention element, then temperature control reliability is improved, but the heating wire area requires even higher output to maintain comfortability
Solution Approach 1:
The base material creates localized thermal environments: the auxiliary heater area with low air permeability concentrates thermal energy to reliably heat the excessive temperature rise prevention element, while the heating wire area with high air permeability maintains comfortable heating without requiring excessive power. This spatial differentiation of thermal properties resolves the power output contradiction.
3Ease of operation
If the base material has uniform high air permeability throughout, then air circulation and comfortability are improved, but heat dissipation prevents effective heating of the excessive temperature rise prevention element
Solution Approach 1:
The base material implements non-uniform air permeability distribution: high air permeability in the heating wire area ensures adequate air circulation and comfortability, while low air permeability in the auxiliary heater area suppresses heat dissipation to enable effective heating of the excessive temperature rise prevention element. This local quality differentiation simultaneously achieves both air circulation and effective heating.
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 configuration enables swift warming of the seated person while maintaining air permeability, achieving a higher level of comfortability and efficient heating performance, even in vehicles with lower engine heat emissions.
Implementation Method 1
a heating wire
Implementation Method 2
the auxiliary heating wire heats the excessive temperature rise prevention element
Implementation Method 3
the base material is provided with the heating wire and has air permeability
Implementation Method 4
the auxiliary heater area includes a cooling suppression part for the excessive temperature rise prevention element
Data Source
AI summary
A seat heater mounted to a seat includes: a heating wire; a base material provided with the heating wire and having air permeability; an excessive temperature rise prevention element that prevents an excessive temperature rise of the heating wire; and an auxiliary heating wire that heats the excessive temperature rise prevention element, in which air permeability in an auxiliary heater area provided with the auxiliary heating wire is lower than air permeability in a heater area provided with the heating wire, so that heat dissipation in the auxiliary heater area is suppressed to enable a temperature of the excessive temperature rise prevention element to rise efficiently to follow the temperature rise of the heater area.