Ceiling Jet Air Duct Assembly With Overlapping Guide Channels

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Solution Overview

Problem

Existing ceiling jet outlets often create drafts due to straight air flow, and there is a need for an arrangement that allows for free design of the outlet panel while maintaining high volume flow and low production costs.

Innovation Solution

An air guiding arrangement with at least four air guiding elements, each overlapping with adjacent elements to form air channels, providing jet deflection without interaction with the outlet plate, allowing for a thin outlet plate design and flexible optical integration with the ceiling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If air is blown in a straight direction into a room to be ventilated, then the ventilation process is simple, but drafts occur that are uncomfortable for people in the room

Engineering Contradiction:
Improvesimplicity of ventilation processVSAvoiddrafts
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The air outlet is divided into multiple outlet slots arranged in different directions, and the air guiding element is segmented into multiple sections that can independently deflect air streams. This segmentation allows air to be distributed in multiple directions rather than a single straight direction, reducing drafts while maintaining ventilation effectiveness

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Instead of allowing air to flow straight into the room, the air guiding element is positioned to deflect the air stream at an angle, inverting the direct flow path into an angled ceiling-jet path. This causes air to travel along the ceiling rather than directly into the occupied space, eliminating drafts

Inventive Principle:
Principle #13The other way round (Inversion)

2Reliability

If air guide elements and outlet plate are coordinated in prior art designs, then jet deflection is achieved, but the design and installation complexity increases

Engineering Contradiction:
Improvejet deflection effectivenessVSAvoidcoordination between air guide elements and outlet plate
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The air guiding function is extracted from the outlet plate and implemented by a separate, freely positionable air guiding element. This element can be adjusted independently of the outlet plate, allowing the outlet plate to be designed purely for aesthetic purposes while the air guiding element handles all flow control functions

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The air guiding element is made adjustable and repositionable relative to the outlet plate, allowing dynamic optimization of the jet deflection angle. This enables the system to adapt to different installation scenarios and ceiling configurations without requiring complex coordinated design

Inventive Principle:
Principle #15Dynamics

3Stability of the object's composition

If a thick outlet plate is used to coordinate with air guiding elements, then structural stability is improved, but aesthetic integration with the ceiling is reduced

Engineering Contradiction:
Improvestructural stability of outlet plateVSAvoidaesthetic integration with ceiling
Core Design Contradiction:
Stability of the object's compositionVSShape

Solution Approach 1:

The air guiding function is extracted from the outlet plate structure itself and assigned to a separate air guiding element. This allows the outlet plate to be designed as a thin, aesthetically pleasing component that integrates seamlessly with the ceiling, while the air guiding element provides the necessary structural function for flow control

Inventive Principle:
Principle #2Taking out (Extraction)

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 solution effectively deflects air flowing perpendicularly to the deflection plane, ensuring it exits parallel or at an acute angle, reducing drafts and allowing for uniform air distribution along the ceiling without direct air passage, thus enhancing ventilation efficiency and aesthetic integration.

Implementation Method 1

The air guiding arrangement is used to deflect air streams emerging from the air outlet in such a way that they run essentially parallel to the outlet plate or at an acute angle to it

Methodology Applied
Scientific EffectAerodynamic flow guidance: Coanda Effect

Data Source

PatentEP2975332B1Air duct assembly for a ceiling jet outlet and method
Publication Date: 2018.06.06 LTG AG
  • EP2975332B1 patent drawingFigure 1
  • EP2975332B1 patent drawingFigure 2
  • EP2975332B1 patent drawingFigure 3a~3c

AI summary

The present invention relates to an air guiding arrangement (10) for a ceiling jet outlet, with at least three air guiding elements (12, 13, 14, 15; 12, 13, 14, 15, 16, 17), characterized in that each air guiding element (12, 13, 14, 15; 12, 13, 14, 15, 16, 17) an adjacent air guide element (15, 12, 13, 14; 17, 12, 13, 14, 15, 16) from the at least three air guide elements (12, 13, 14, 15; 12, 13, 14, 15, 16, 17) and a further adjacent air guiding element (13, 14, 15, 12; 13, 14, 15, 16, 17, 12) from the at least three air guiding elements (12, 13, 14, 15; 12, 13, 14, 15, 16, 17) and wherein each airfoil element (12, 13, 14, 15; 12, 13, 14, 15, 16, 17) is connected to the adjacent airfoil element (15, 12, 13, 14; 17, 12, 13, 14, 15, 16) is arranged in an overlapping manner, so that between the air guiding element (12, 13, 14, 15; 12, 13, 14, 15, 16, 17 ) And the adjacent air guiding element (15, 12, 13, 14; 17, 12, 13, 14, 15, 16) an air guiding channel (28) is formed, and with the far its adjacent air guiding element (13, 14, 15, 12; 13, 14, 15, 16, 17, 12) is arranged in an overlapping manner, so that between the air guide element (12, 13, 14, 15; 12, 13, 14, 15, 16, 17) and the further adjacent air guide element (13 , 14, 15, 12; 13, 14, 15, 16, 17, 12) a further air duct (30) is formed. Furthermore, a ceiling jet outlet and a method for guiding air are proposed.