Air Wall Blower Layout for Wide Openings Without Turbulence
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Solution Overview
Problem
Existing air wall devices have a limited range and counteract when air streams are blown from both sides of a passage opening, leading to turbulence and mist or ice formation due to unscreened areas between the streams.
Innovation Solution
A device with two blowing devices, each with primary and secondary blower slits, regulates air flow speeds to minimize turbulence, using adjustable valves and grids to ensure air streams meet without colliding, and actively conditions secondary air streams based on temperature and humidity differences between spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If air streams are blown from both sides of a passage opening, then the screening range is extended, but turbulence and mist/ice formation occur due to collision of opposing air streams
Solution Approach 1:
The patent applies different qualities to different parts of the air wall system. The primary air stream has high velocity and forms the rigid wall structure, while the secondary air stream has lower velocity and provides stabilization. This local differentiation allows the system to extend screening range while preventing turbulence through careful velocity gradient management.
Solution Approach 2:
The air wall is constructed as a composite structure with multiple air streams of different properties. The primary stream (high velocity) and secondary stream (lower velocity) are combined to create a multi-layered air barrier that extends the effective screening range while the velocity differential prevents harmful collisions and turbulence.
2Object-generated harmful factors
If regulating means are added to control blowing speeds, then turbulence is minimized, but device complexity increases
Solution Approach 1:
The regulating means (valves and grids) enable dynamic control of air flow speeds, allowing the system to adapt to different operating conditions. This dynamic adjustment capability minimizes turbulence by optimizing the velocity relationship between primary and secondary streams while maintaining operational flexibility.
Solution Approach 2:
The patent changes the velocity parameter of the air streams through regulating means. By adjusting the blowing speeds of primary and secondary streams to specific ranges, the system achieves turbulence minimization while the secondary stream's lower velocity specifically prevents mist and ice formation.
3Object-generated harmful factors
If secondary air streams are actively conditioned, then mist and ice formation is prevented, but energy consumption increases
Solution Approach 1:
The secondary air stream is actively conditioned by changing its temperature and humidity parameters through drying and heating means. This parameter adjustment prevents the thermodynamic conditions that lead to mist and ice formation at interfaces, while the lower velocity of the secondary stream reduces the energy required for conditioning compared to conditioning the entire air wall.
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
Achieves effective screening with reduced energy consumption by generating a stable air wall across a wider range, preventing mist and ice formation, and efficiently transitioning air conditions between spaces.
Implementation Method 1
a secondary air stream which is either generated by the device or entrained by the primary stream as a result of aerodynamic effects
Implementation Method 2
which secondary blower slits are connected to secondary means for drying and/or heating air to be blown
Implementation Method 3
which secondary blower slits are connected to secondary means for drying and/or heating air to be blown
Data Source
AI summary
The invention relates to a device (1) for generating an air wall across a passage opening (100), which passage opening (100) has lateral edges and a top edge, comprising: a first and second blowing device (10, 20), arranged at the lateral edges in such a way that planar air streams are blown over the height and respective parts of the width of the passage opening (100); wherein the device (1) is provided with regulating means (13; 23) for regulating the blowing speeds of the blowing devices; and wherein the first blowing device (10) and the second blowing device (20) are provided with secondary blower slits (12; 22) which are parallel to the respective primary blower slits (11; 21), which secondary blower slits (12; 22) are connected to secondary means for drying and/or heating air to be blown.