Decorative panel for air conditioner, and in-room unit

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Solution Overview

Problem

Condensed water from the peripheral protrusion portion of decorative panels in air conditioner indoor units can penetrate the ceiling surface, causing degradation.

Innovation Solution

A decorative panel with a panel extension portion and a movement restrictor, such as a notch or groove, on its outer peripheral surface to prevent water from moving onto the ceiling surface, reducing condensation penetration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If the decorative panel has a peripheral protrusion portion extending along the ceiling surface, then the aesthetic appearance and coverage are improved, but condensed water can penetrate the ceiling surface causing degradation

Engineering Contradiction:
Improveperipheral protrusion portionVSAvoidcondensed water penetration
Core Design Contradiction:
ShapeVSObject-affected harmful factors

Solution Approach 1:

The peripheral protrusion portion is segmented by introducing notches that divide the continuous surface into separate sections. This segmentation creates discrete water collection zones that prevent condensed water from spreading across the entire peripheral surface and penetrating the ceiling, while maintaining the overall aesthetic coverage function.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The notches act as intermediary structures between the peripheral protrusion portion and the ceiling surface. These notches serve as water collection channels that intercept condensed water before it can reach the ceiling, functioning as a mediating element that protects the ceiling while preserving the decorative panel's shape.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If the decorative panel is downsized, then the device complexity is reduced, but the coverage area and aesthetic effect may be compromised

Engineering Contradiction:
Improvedecorative panel structureVSAvoidcoverage area
Core Design Contradiction:
Device complexityVSArea of stationary object

Solution Approach 1:

The solution adds a vertical dimension to the peripheral protrusion portion by introducing notches that create depth and three-dimensional structure. This dimensional change allows the panel to maintain effective water restriction functionality without increasing the horizontal coverage area, thus avoiding complexity increase while preserving aesthetic effect.

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

Data Source

PatentEP2993424B1Decorative panel for air conditioner, and in-room unit
Publication Date: 2019.12.25 DAIKIN INDUSTRIES LTD
  • EP2993424B1 patent drawingFigure 1
  • EP2993424B1 patent drawingFigure 2
  • EP2993424B1 patent drawingFigure 3

AI summary

A decorative panel (40) is attached to a lower portion of an indoor unit body (30) inserted and installed in an opening (O) of a ceiling (U). A panel body (41) of the decorative panel (40) includes a panel central portion (400) having an inlet (401a) and an outlet (402a) and covering a lower surface of the indoor unit body (30), and a panel extension portion (404) extending from the entire periphery of the panel central portion (400) along a ceiling surface (U1). A movement restrictor (60) for restricting movement of water from an outer peripheral surface (404a) of the panel extension portion (404) to the ceiling surface (U1) is provided on an outer peripheral surface (404a) of the panel extension portion (404), and is formed along an outer periphery of the panel extension portion (404).