Vehicle Ventilation Flap Regulating Airflow by Speed
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Solution Overview
Problem
Existing ventilation systems for vehicles fail to effectively manage airflow at varying speeds, leading to inefficient air flow regulation and reduced comfort and fuel efficiency due to inadequate sealing and airflow control.
Innovation Solution
A ventilation device comprising a housing, connecting elements, and springs that mechanically control flaps to open and close based on speed, using a combination of mechanical force and air resistance to regulate airflow through openings, providing a weather-tight seal and efficient airflow management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If flaps are kept open for ventilation at low speeds, then air flow is improved, but weather sealing deteriorates at higher speeds
Solution Approach 1:
The flaps are designed to dynamically change position based on vehicle speed. At low speeds, springs maintain flaps in an open position for ventilation. At higher speeds, air pressure automatically closes the flaps to maintain weather sealing. This dynamic adaptation resolves the contradiction by allowing the system to optimize for air flow when needed while protecting against weather when vehicle speed indicates external conditions require sealing.
Solution Approach 2:
The system changes the operational state of the flaps based on the parameter of vehicle speed. The transition from open to closed position is triggered by changes in air pressure corresponding to speed increases. This parameter-based control allows the system to automatically adjust between ventilation and weather sealing modes without manual intervention.
2Adaptability or versatility
If manual flap control is used for airflow regulation, then adaptability is improved, but device complexity increases
Solution Approach 1:
The ventilation system is designed to regulate itself automatically based on vehicle speed and air pressure conditions. The springs and air pressure work together to automatically open or close flaps without requiring manual control mechanisms, switches, or electronic controls. This self-service approach provides adaptability to varying driving conditions while maintaining simple mechanical construction.
Solution Approach 2:
The patent removes complex electronic control systems, motors, and manual operating mechanisms from the ventilation system. By extracting these complex elements and relying solely on passive mechanical components (springs and air pressure), the system achieves airflow regulation adaptability through simple, reliable mechanical means.
3Loss of energy
If weather sealing is prioritized at all speeds, then fuel efficiency is improved, but air flow regulation deteriorates at low speeds
Solution Approach 1:
The system dynamically adjusts the sealing state based on vehicle speed. At low speeds where fuel efficiency gains from sealing are minimal, the flaps remain open for air flow. At higher speeds where aerodynamic drag and fuel consumption become more significant, the flaps automatically close to improve sealing. This dynamic behavior optimizes the trade-off between air flow needs and fuel efficiency across different operating conditions.
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 device effectively regulates airflow by keeping flaps open at low speeds for ventilation and closing them at higher speeds to reduce air flow, enhancing comfort and fuel efficiency by maintaining a weather-tight seal and optimizing airflow according to vehicle speed.
Implementation Method 1
the spring mechanically presses against the connecting element with force sufficient for the connecting element to mechanically keep the hinged flaps open
Implementation Method 2
When sufficient force is applied to the hinged flaps, the hinged flaps mechanically push the connecting elements towards the spring with sufficient force to mechanically compress the spring
Data Source
AI summary
A safety ventilation device for vehicles or other applications has a housing with one or more openings covered by a hinged flap with the flaps interconnected by a connecting element. A spring is attached to the connecting element or otherwise to the flaps such that in a first position the spring keeps the flaps open and air can pass through the openings. In a second position, upon the application of force to the flaps, such as airflow caused by a moving vehicle, the spring compresses, and the flaps close. The housing of the device includes a protrusion at the top and a channel at the bottom to facilitate an interference fit between a window and a window or door frame.