Ceiling Cassette Airflow Layout for Full-Room Corner Coverage

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Solution Overview

Problem

Existing ceiling-embedded air conditioners face challenges in evenly distributing air to all directions, leading to temperature variations and inefficiencies in large rooms, due to complex structures and the need for auxiliary outlets which compromise the strength of the drain pan and increase component count.

Innovation Solution

A ceiling-embedded air conditioner design featuring a box-shaped housing with a square decorative panel, rotatable wind direction plates, and a circumferential blowoff path that guides air to corners without auxiliary outlets, allowing air to be blown in all directions while maintaining the strength of the drain pan and simplifying the structure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If auxiliary outlets are added to blow air in all directions, then air distribution improves, but device complexity increases and drain pan strength decreases

Engineering Contradiction:
Improveair distribution capabilityVSAvoidoutlet structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies the dynamics principle by making the wind direction plates rotatable to dynamically change air blowing directions. The wind direction plates can rotate to different angles (0°, 45°, 90°, 135°) to direct air flow toward different corners of the room, providing dynamic adaptability without requiring multiple fixed outlets. This resolves the contradiction by achieving versatile air distribution through motion rather than through adding more outlet components.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies the universality principle by designing the wind direction plates to serve multiple functions: they control air flow direction, cover the outlets when not in use, and can be positioned at various angles to achieve different blowing patterns. This single component performs what would traditionally require multiple separate outlets and control mechanisms, thereby reducing device complexity while maintaining air distribution capability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If auxiliary outlets are added to blow air in all directions, then air distribution improves, but drain pan strength decreases

Engineering Contradiction:
Improveair distribution capabilityVSAvoiddrain pan strength
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The dynamics principle resolves this contradiction by enabling the existing outlets to dynamically change their air flow directions through rotatable wind direction plates. Instead of adding more outlet openings that would weaken the drain pan, the system uses motion to redirect air flow from the same outlets to different corners, achieving versatile air distribution without compromising structural integrity.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If wind direction plates are made longer to cover corners, then air distribution to corners improves, but device complexity increases

Engineering Contradiction:
Improvecorner air coverageVSAvoidwind direction plate complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies the dimensionality change principle by extending the wind direction plates beyond the simple outlet width to reach toward the corners of the decorative panel. The plates are designed with lengths that allow them to extend diagonally toward corner regions when rotated to 45° or 135° positions, effectively covering corner areas without requiring separate corner outlets or additional components. This achieves enhanced corner coverage through geometric arrangement rather than through adding more parts.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 enables efficient air conditioning in large rooms by ensuring air is distributed evenly in all directions without the need for auxiliary outlets, maintaining the structural integrity of the drain pan and reducing component complexity, thus improving both performance and design.

Implementation Method 1

The heat exchanger performs heat exchange between the sucked air and a refrigerant

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Implementation Method 2

The heat-exchanged air is adjusted in wind direction by wind direction plates and delivered from outlets into a room

Methodology Applied
Scientific EffectFluid flow:

Data Source

PatentEP3026361B1Ceiling-embedded air conditioner
Publication Date: 2020.09.23 FUJITSU GENERAL LTD
  • EP3026361B1 patent drawingFigure 1~2
  • EP3026361B1 patent drawingFigure 3
  • EP3026361B1 patent drawingFigure 4

AI summary

A ceiling-embedded air conditioner includes: a box-shaped housing that is embedded in a ceiling of an air-conditioned room; a square decorative panel that is attached to a lower surface of the housing and covers the ceiling; main body outlets that are provided along respective four sides of a bottom surface of the housing and blow heat-exchanged air; outlets that are provided in the decorative panel in correspondence with the main body outlets; corner blowoff units that are provided in the decorative panel in correspondence with coupling portions for coupling the outlets; a blowoff path that is circumferentially provided in the decorative panel in correspondence with the outlets and the corner blowoff units; and wind direction plates that are rotatably provided along the respective sides of the decorative panel so as to cover or open the blowoff path and are longer than a long side of the outlets.