Permeable Heater Assembly for Space-Efficient Seat Temperature Control

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Solution Overview

Problem

Current vehicle seating assemblies that provide heating and cooling occupy significant space, making it desirable to develop a system that efficiently utilizes seat space for temperature control.

Innovation Solution

A vehicle seating assembly with a permeable heater between the cushion and trim layer, in fluid communication with an air mover, allows for heating or cooling of the seating surface, utilizing a laminate structure with carbon nanotubes and multiple temperature control zones, and a controller to activate the heater and air mover based on input indications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If traditional heating and cooling elements are used in vehicle seating assemblies, then temperature control function is provided, but significant seat space is consumed

Engineering Contradiction:
Improvetemperature control capabilityVSAvoidseat space utilization
Core Design Contradiction:
TemperatureVSVolume of moving object

Solution Approach 1:

The patent employs a permeable heater that allows air to pass through it while still providing heating functionality. This porous structure enables the heating element to be integrated into the seating assembly without requiring additional space, as the air flow paths are incorporated within the heater structure itself rather than requiring separate channels

Inventive Principle:
Principle #31Porous materials

Solution Approach 2:

The permeable heater serves multiple functions simultaneously: it provides heating, allows air flow for cooling, and maintains structural integrity of the seating assembly. This multi-functionality eliminates the need for separate heating and cooling infrastructure, thereby conserving seat space

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of operation

If heating and cooling elements are integrated into the seat, then passenger comfort is improved, but device complexity increases

Engineering Contradiction:
Improvepassenger comfortVSAvoidseating assembly structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent combines the heating element and air flow pathway into a single integrated permeable heater structure. This merging of functions reduces the number of separate components needed, thereby simplifying the overall device complexity while maintaining both heating and cooling capabilities for passenger comfort

Inventive Principle:
Principle #5Merging (Combining)

3Volume of moving object

If a permeable heater is used to save space, then space utilization is improved, but manufacturing complexity may increase

Engineering Contradiction:
Improveseat space efficiencyVSAvoidheater fabrication
Core Design Contradiction:
Volume of moving objectVSEase of manufacture

Solution Approach 1:

The permeable heater is constructed as a composite structure combining heating elements with a permeable matrix that allows air flow. This composite approach enables the heater to be manufactured as an integrated component rather than assembling multiple separate parts, thereby reducing manufacturing complexity while achieving space-efficient design

Inventive Principle:
Principle #40Composite materials

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 enables efficient space utilization for temperature control, allowing for quick and uniform heating or cooling of the seating surface, reducing the time to reach desired temperatures and maintaining comfort without excessive space consumption.

Implementation Method 1

The permeable heater is operable to direct heat toward a seating surface

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

The air mover is operable to pull air from the seating surface and through the permeable heating substrate

Methodology Applied
Scientific EffectForced convection: Forced Convection

Data Source

PatentUS10821862B2Temperature control system for seating assembly
Publication Date: 2020.11.03 FORD GLOBAL TECH LLC
  • US10821862B2 patent drawing
  • US10821862B2 patent drawing
  • US10821862B2 patent drawing

AI summary

A vehicle seating assembly includes a cushion and a trim layer. A permeable heater is disposed between the cushion and the trim layer. An air mover is in fluid communication with the permeable heater. The permeable heater and the air mover are operable to respectively heat or cool a seating surface.