Seat Backrest Ventilation Airflow Split for Draft-Free Cabin Cooling
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Solution Overview
Problem
Existing vehicle ventilation systems fail to provide efficient and draft-free air conditioning, particularly for vehicle seats, which can lead to discomfort and muscle tension due to uneven air distribution and lack of control over airflow strength.
Innovation Solution
A ventilation device with an air outflow opening on the backrest of a vehicle seat, featuring pivotable air guiding elements and a flap element that can adjust airflow to optimize ventilation by dividing and deflecting air currents, ensuring both front and rear regions receive controlled airflow without drafts, and an inflatable air guiding element for further customization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If air outflow openings are arranged only in the front region of the vehicle, then the front region can be ventilated, but the rear region remains unventilated
Solution Approach 1:
The air guiding element is divided into a first air guiding portion and a second air guiding portion, which can be independently positioned to control airflow direction. This segmentation allows a single air outflow opening to serve multiple regions (front and rear), resolving the contradiction between ventilation coverage and device complexity
Solution Approach 2:
The air guiding elements are designed to be movable and adjustable, allowing dynamic control of airflow distribution. The first and second air guiding portions can be positioned independently to adapt to different ventilation needs, enabling one air outlet to serve multiple functions and regions
2Adaptability or versatility
If fixed airflow strength is used, then the system is simple, but it cannot adapt to different passenger positions and comfort levels
Solution Approach 1:
The air guiding elements are designed to be adjustable and movable, allowing dynamic control of airflow distribution and strength. This enables adaptation to different passenger positions and comfort preferences without requiring multiple fixed systems
Solution Approach 2:
The system incorporates sensors that detect passenger presence and characteristics, providing feedback to automatically adjust airflow strength and distribution. This feedback mechanism enables adaptive ventilation while maintaining operational simplicity for the user
3Productivity
If strong airflow is used for ventilation, then cooling efficiency is improved, but draft and muscle tension increase
Solution Approach 1:
The system provides localized airflow control through separately adjustable first and second air guiding portions, allowing different airflow strengths to be directed to different regions. This enables efficient ventilation while minimizing draft in sensitive areas by tailoring airflow characteristics to local requirements
Solution Approach 2:
The system can dynamically change airflow parameters (strength, direction, distribution) based on detected passenger characteristics and environmental conditions. This allows optimization of ventilation efficiency while preventing harmful draft effects by adjusting parameters in real-time
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, draft-free ventilation of vehicle interiors, allowing for adjustable airflow strength to suit different passenger positions and comfort levels, optimizing air distribution and reducing muscle tension by ensuring consistent and comfortable air circulation.
Implementation Method 1
a number of air guiding element that can be positioned is arranged inside the air outflow opening, and at least one further air guiding element for dividing and deflecting the airflow is arranged on the vehicle roof in the region of the emerging airflow
Data Source
AI summary
A ventilation device of a vehicle includes an air outflow opening disposed on an upper side of a backrest of a seat of the vehicle such that an airflow from the air outflow opening flows in a direction of a roof of the vehicle. A plurality of air guiding elements are pivotably mounted in a region of the air outflow opening where an air volume of a front partial airflow and a rear partial airflow is settable by the plurality of air guiding elements. A further air guiding element is disposed on the roof in a region of the airflow where the airflow is dividable and deflectable by the further air guiding element.