Refrigerator Door Touch Screen Integration for Closed-Door Operation

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Solution Overview

Problem

Conventional refrigerators require users to operate touch devices with the door open, lacking a convenient and efficient method for touch-based control or remote operation, and the touch screen devices are not easily replaceable or mountable on the door.

Innovation Solution

A touch screen device is integrated into the door's frame, allowing for full-touch operation and remote control, with a design that includes a microcomputer, wireless communication module, and a mounting system enabling easy assembly and disassembly, ensuring accurate touch detection and easy replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the touch screen device is integrated into the door frame, then the ease of operation is improved, but the device complexity increases

Engineering Contradiction:
Improveease of operationVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The door assembly is segmented into distinct components: panel assembly, door frame, and touch screen device. The touch screen device is positioned inside the door frame in contact with the panel assembly, allowing it to be integrated into the door structure while maintaining operational independence and simplifying user interaction.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The door frame serves multiple functions: it provides structural support for the door, houses the touch screen device, and facilitates the integration of the control interface into the door assembly. This multi-functionality reduces the need for separate control panels and improves ease of operation.

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

2Ease of operation

If the touch screen device is disposed inside the door frame in contact with the panel assembly, then the ease of operation is improved, but the manufacturing complexity increases

Engineering Contradiction:
Improveease of operationVSAvoidease of manufacture
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The door assembly is divided into separable components including the panel assembly, door frame, and touch screen device. This segmentation allows each component to be manufactured independently using standard processes, then assembled together, maintaining ease of manufacture while achieving integrated functionality.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The touch screen device is nested within the door frame structure, specifically positioned inside the door frame in contact with the panel assembly. This nesting approach allows the touch screen device to be housed within the existing door frame geometry without requiring separate mounting structures, simplifying the overall manufacturing process.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Ease of repair

If the touch screen device is made detachable and replaceable, then the ease of repair is improved, but the reliability of connection may worsen

Engineering Contradiction:
Improveease of repairVSAvoidreliability
Core Design Contradiction:
Ease of repairVSReliability

Solution Approach 1:

The touch screen device is designed as a detachable component separated from the door frame and panel assembly. This segmentation enables easy removal and replacement of the touch screen device for repair or maintenance without disassembling the entire door structure, significantly improving ease of repair while maintaining reliable connections through proper interface design.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4394290A1refrigerator
Publication Date: 2024.07.03 LG ELECTRONICS INC
  • EP4394290A1 patent drawingFigure 1
  • EP4394290A1 patent drawingFigure 2
  • EP4394290A1 patent drawingFigure 3

AI summary

The present disclosure relates to a refrigerator and a home appliance, and the refrigerator includes: a cabinet having a storage space; a door opening and closing the storage space; in which the door includes: a panel assembly including a front panel forming an outer appearance of the front surface; a door frame connected to the panel assembly; and a touch screen device disposed inside the door frame in contact with the panel assembly, detecting a user's touch operation, and outputting a screen.