Air vent with air flow direction control member
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Solution Overview
Problem
Existing air vents with pivotably mounted elements do not allow for air deflection over a wide adjustment range, failing to meet the high requirements for air deflection, particularly in vehicle dashboards where deflection of at least 45° is necessary.
Innovation Solution
An air vent design featuring a housing with a displacement body that pivots about a single axis within the air duct, having a club-like section and a tapered section, which accelerates air flow by reducing the duct cross-section, enabling deflection over a wide range without additional mounting spacers, and utilizing the Coanda effect for air deflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional air vent with a pivotably mounted conical air guiding element is used, then the structure is simple, but the air deflection range is limited and cannot achieve the required 45° deflection
Solution Approach 1:
The patent employs a dynamic air guiding element that can pivot about a horizontal axis to change the flow direction of air. This dynamic element allows the air vent to adapt to different deflection requirements (up to 45°) while maintaining a relatively simple overall structure. The pivotable design enables the air guiding element to dynamically adjust the air flow path without requiring complex mechanical mechanisms.
Solution Approach 2:
The patent changes the geometric parameters of the air duct, specifically reducing the cross-section from the middle section towards the air outlet section. This parameter change creates a converging duct that accelerates air flow and enhances the deflection capability. The optimized cross-sectional dimensions and the angle of the converging walls are carefully selected to achieve the desired 45° deflection range while maintaining structural simplicity.
2Speed
If the air duct cross section is reduced to accelerate air flow, then air deflection performance improves, but the air duct becomes more complex
Solution Approach 1:
The patent applies parameter changes by systematically reducing the cross-section of the air duct from the middle section to the outlet section. The converging walls are designed with specific angles and dimensions to optimize air flow acceleration. This controlled geometric transformation accelerates the air flow without requiring additional active components or complex mechanisms, achieving enhanced performance through optimized passive geometry.
3Ease of operation
If a pivotable displacement body with club-like shape is used, then air deflection over wide range is achieved, but manufacturing complexity increases
Solution Approach 1:
The club-shaped displacement body is designed to pivot about a horizontal axis, providing dynamic adjustment capability for wide-angle air deflection (up to 45°). The club-like geometry with its specific shape characteristics allows effective flow control while maintaining manufacturability. The pivotable design achieves the required adjustment range without requiring multiple separate components or complex assembly procedures.
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 air vent achieves significant air flow acceleration and deflection over a wide range, up to 45°, with a simple construction and the ability to be integrated into vehicle dashboards without visible slats, while maintaining low weight and cost-effectiveness.
Implementation Method 1
the air vent is designed in such a way that in order to deflect an exiting air flow in its maximum deflection positions, there is a greater acceleration of the exiting air flow
Implementation Method 2
the housing of the air vent for the air duct and the conical air guiding element are designed in such a way that air deflection can be achieved using the Coanda effect
Data Source
Figure 1
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Figure 3~4
AI summary
An air vent (10) with a device for controlling an air flow is described. The air vent (10) has a housing (12) which surrounds an air duct (16) at least in sections, and has a displacement body (32) mounted pivotably in the housing (12). The housing (12) has an air inlet portion (20), a central portion (22) and an air outlet portion (24), wherein the cross section of the air duct (16) is reduced from the central portion (22) towards the air outlet portion (24). The displacement body (32) is pivotable about a pivot axis (D) running parallel to an air outlet opening (26) provided in the air outlet portion (24), and is of drumstick-like design at least in sections.