Ceiling Air Passage With 180° Deflection for Low-Height Parallel Flow
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Solution Overview
Problem
Existing air passages either have a high overall height and limited flexibility or result in vertical air flow causing thermal discomfort due to radial outflow, and are not suitable for generating a flow parallel to the ceiling, which restricts their application and compatibility with ceiling sails.
Innovation Solution
The air passage design features a continuously narrowing flow cross section that reduces to zero in the flow direction, allowing air to exit parallel to the ceiling, accelerating the air flow and improving induction effects, with a partition deflecting air at the edge to achieve a parallel flow orientation, and can be used in conjunction with ceiling sails for enhanced air conditioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the air passage flows through perpendicular to its outlet surface, then the air outlet surface can be arranged in the plane of the suspended ceiling, but the overall height becomes relatively high and radial outflow causes thermal discomfort
Solution Approach 1:
The patent inverts the conventional air passage configuration by redirecting the air flow path. Instead of flowing perpendicular to the outlet surface, the air is guided to flow parallel to the ceiling surface through a deflection mechanism, achieving low overall height while maintaining effective air distribution
Solution Approach 2:
The patent transitions the air flow from a vertical dimension (perpendicular to ceiling) to a horizontal dimension (parallel to ceiling). This dimensional change allows the air outlet surface to remain in the ceiling plane while the air flows horizontally along the ceiling, eliminating the need for high overall height
2Power
If the air passage is arranged centrally in the ceiling with radial outflow, then it can achieve high power density, but directed outflow in a small angular range is not possible
Solution Approach 1:
The patent introduces a deflectable air passage configuration that can dynamically adjust the air flow direction. The air passage can be oriented to direct air flow in specific angular ranges rather than radially in all directions, providing adaptability for different installation locations including edge areas while maintaining effective air distribution
Solution Approach 2:
The patent applies different air flow characteristics to different locations. By enabling directed outflow in specific angular ranges, the system can optimize air distribution for local conditions such as edge area installations or ceiling sail configurations, rather than using a uniform radial pattern everywhere
3Device complexity
If the supply air flows out perpendicular to the air outlet surface, then the air passage structure is simple, but vertical air flow causes considerable thermal discomfort due to drafts and local temperature drop
Solution Approach 1:
The patent inverts the air flow direction from vertical (perpendicular to ceiling) to horizontal (parallel to ceiling). This inversion eliminates the harmful vertical drafts and local temperature drops that cause thermal discomfort, while the air passage structure remains relatively simple through the use of a deflection mechanism
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
This design enhances air flow parallel to the ceiling, reduces thermal discomfort, and allows for flexible installation, particularly in edge areas, improving air conditioning efficiency and compatibility with ceiling sails by ensuring air flows in a strip-shaped area with almost parallel boundary lines.
Implementation Method 1
a flow cross section of the outlet space, which extends perpendicular to the air outlet surface, narrows continuously to zero when viewed in the flow direction
Implementation Method 2
air flowing through the air passage can be deflected by approximately 180 ° in the area of the overflow cross section
Implementation Method 3
If the air leaves the air passage at a high speed, the induction effect is significantly improved
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to an air passage (1'''), comprising a housing (2), which has an air inlet port (5) for connecting to an air-supply duct and an air outlet surface (7), which is or can be provided with a perforation (8). In order to further develop a known air passage so that the air passage is characterized by a smaller height and can also be used in edge areas of ceilings or for ceiling rafts, according to the invention the air passage (1''') is equipped with a partition (10), which divides an interior of the housing (2) into an inlet space (11) and an outlet space (12), wherein the air inlet port (5) opens into the inlet space (11) and the outlet space (12) is bounded by the air outlet surface (7). Furthermore, a flow-over cross-section (15) is provided according to the invention, said flow-over cross-section forming a flow connection between the inlet space (11) and the outlet space (12), wherein air flowing through the air passage (1, 1', 1'', 1''', 1'''', 1''''') can be deflected by approximately 180° in the area of the flow-over cross-section (15). The invention further relates to a ceiling raft (30) that comprises an air passage (1''') described above.