Indoor air conditioner

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Solution Overview

Problem

Existing air conditioning indoor units lack a robust frame structure to effectively support heavy heat exchangers and maintain strength, particularly in the lower air inlet and inlet air path areas.

Innovation Solution

The integration of a first frame with heat exchanger support portions and a mounting portion directly fixed to the installation-side wall, combined with a second frame that forms the lower air inlet and inlet air path, enhances the structural strength and facilitates efficient air delivery to the heat exchanger.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the frame that supports the heat exchanger and the frame fixed to the wall are separately formed, then the manufacturing process is simpler, but the strength at the coupled section is reduced

Engineering Contradiction:
Improveease of manufactureVSAvoidstrength of frame
Core Design Contradiction:
Ease of manufactureVSStrength

Solution Approach 1:

The patent merges the heat exchanger support frame and the wall-fixed frame into a single integrated frame structure. This integration eliminates the coupled section between separate frames, thereby enhancing overall strength while maintaining manufacturing feasibility through unified molding processes.

Inventive Principle:
Principle #5Merging (Combining)

2Strength

If the frame is made as a single integrated structure, then the strength is enhanced, but the manufacturing complexity increases

Engineering Contradiction:
Improvestrength of frameVSAvoiddevice complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The integrated frame is segmented into functional regions (heat exchanger support portion, wall-fixed portion, and lower inlet air path portion) that can be independently designed and molded. This segmentation allows complex integrated structures to be manufactured through multi-cavity or insert molding techniques without requiring post-assembly, thus maintaining manufacturing simplicity.

Inventive Principle:
Principle #1Segmentation

3Ease of manufacture

If separate frames are used for heat exchanger support and wall mounting, then the manufacturing process is easier, but the overall structural reliability is reduced

Engineering Contradiction:
Improveease of manufactureVSAvoidreliability of frame structure
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

By combining the heat exchanger support frame and wall-fixed frame into one integrated structure, the patent eliminates potential failure points at coupling joints. The unified structure ensures consistent material properties and structural integrity throughout, enhancing reliability while being manufacturable through advanced molding processes.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP2829814B1Indoor air conditioner
Publication Date: 2017.06.07 DAIKIN INDUSTRIES LTD
  • EP2829814B1 patent drawingFigure 1
  • EP2829814B1 patent drawingFigure 2
  • EP2829814B1 patent drawingFigure 3(a)~3(b)

AI summary

A heat exchanger 13 that is a heavy object is supported by a first frame 17. The first frame 17 that supports the heat exchanger 13 is fixed to an installation-side wall 45 without involving a second frame 27. That is, the first frame 17 is configured as a result of heat exchanger support portions 17h that support the heat exchanger 13 that is a heavy object and a mounting portion 17d that is directly fixed to the installation-side wall 45 being integrally formed. Thus, compared to a case where the frame that supports the heavy object and the frame that is fixed to the installation-side wall 45 are separately formed, there is no longer the weakness in the coupled section where the separate frames are coupled together, and the strength of the first frame 17 can be enhanced.