Vehicle Windshield Air Nozzle with Dynamic Pressure Control
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Solution Overview
Problem
Conventional windshield wiper systems obstruct the driver's view and require frequent replacement, while existing air-based solutions for clearing windshield glass in vehicles lack effective control over air discharge pressure and angle, leading to vibration and noise issues.
Innovation Solution
An air blowing apparatus with a cowl top cover assembly, air fan assembly, and adjustable nozzle system that controls air pressure and angle based on driving conditions, using a controller to optimize air discharge for clear visibility and reduced noise, featuring a nozzle cover that opens at predetermined pressures and is supported by elastic members to minimize vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wiper arm system is used to clear the windshield glass, then the driver's view can be secured in rainy weather, but the wiper arm obstructs the driver's view and requires frequent replacement
Solution Approach 1:
The patent extracts the harmful wiper arm component from the windshield clearing system and replaces it with an air blowing apparatus. The air nozzle directs compressed air onto the windshield glass to remove raindrops and debris without any physical contact, thereby eliminating the view obstruction caused by traditional wiper arms while maintaining the clear view function.
Solution Approach 2:
The patent replaces the mechanical wiper arm system with a pneumatic air blowing system. Instead of using mechanical friction and physical contact to clear the windshield, compressed air is used to blow raindrops and debris off the glass surface. This substitution eliminates the need for moving mechanical parts that obstruct the driver's view and require frequent replacement.
2Reliability
If air is discharged at high pressure to clear the windshield glass, then clear visibility is improved, but vibration and noise occur
Solution Approach 1:
The patent implements a dynamic control system that adjusts the air pressure and nozzle opening angle based on driving conditions. The controller modifies the discharge parameters in real-time, allowing the system to achieve clear visibility when needed while reducing pressure and opening angle during normal operation to minimize vibration and noise. This dynamic adjustment resolves the contradiction between effective clearing and harmful vibrations.
Solution Approach 2:
The patent changes the physical parameters of air discharge by controlling both the pressure and the opening angle of the nozzle cover. By adjusting these parameters according to driving conditions, the system can optimize the balance between clearing effectiveness and vibration/noise reduction. Higher pressure and larger opening angles are used when clear visibility is critical, while lower settings are used during normal operation to reduce harmful effects.
3Ease of manufacture
If the nozzle cover opening angle is not controlled, then the structure is simple, but aerodynamic performance is reduced and noise increases
Solution Approach 1:
The patent makes the nozzle cover opening angle dynamic rather than fixed. The controller adjusts the opening angle based on driving conditions, allowing the nozzle to adopt different configurations. This dynamic adjustment improves aerodynamic performance by reducing drag when the vehicle is moving at higher speeds, while maintaining structural simplicity through the use of a hinge mechanism and elastic member that enable automatic or controlled angle adjustment without complex actuators.
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 system provides clear visibility by adjusting air discharge pressure and angle according to driving conditions, reduces noise and vibration, and enhances aerodynamic performance by optimizing the nozzle cover's opening angle, ensuring a comfortable and efficient driving experience.
Implementation Method 1
a nozzle cover configured to be opened when the pressure of the air that is discharged is greater than or equal to a predetermined value
Implementation Method 2
an air fan assembly located inside the cowl top cover assembly, and an air nozzle connected to the air fan assembly via a duct such that a fluid flows therebetween
Data Source
AI summary
An air blowing apparatus is oriented toward a windshield glass of a vehicle and includes an air fan assembly located adjacent to the windshield glass and an air nozzle connected to the air fan assembly via a duct such that a fluid flows therebetween. The air nozzle is located so as to be opposite the windshield glass and is configured to adjust the pressure and angle at which air is discharged toward the windshield glass in accordance with the driving environment of a vehicle.