refrigerator

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Solution Overview

Problem

Conventional refrigerators with speaker modules protrude externally, affecting aesthetics and space utilization, and are prone to flooding from rain or ceiling leaks, compromising functionality and insulation performance.

Innovation Solution

The refrigerator design embeds the speaker module within a cabinet, incorporating a module case with a drainage structure and sound guides to maintain acoustic efficiency and insulation while preventing water ingress.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the speaker module is installed on the exterior of the refrigerator, then sound output function is achieved, but the refrigerator protrudes from the wall and compromises aesthetics and space efficiency

Engineering Contradiction:

Improvesound output functionVSAvoidexternal appearance and space utilization

Core Design Contradiction:

Ease of operationVSShape

Solution Approach 1:

The speaker module is nested within a module case that is integrated into the refrigerator's outer case, allowing the speaker to be housed inside the refrigerator structure rather than protruding externally. This nesting approach maintains the sound output function while achieving a flush, aesthetically pleasing appearance that integrates seamlessly with the refrigerator's overall design.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The speaker module is repositioned from a traditional external front-facing location to an upper rear position within the refrigerator structure. This dimensional relocation allows the speaker to function effectively while being concealed within the refrigerator's depth, eliminating the protrusion issue and improving both aesthetics and space utilization.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Ease of operation

If the speaker module is exposed on the exterior, then sound output is achieved, but the speaker is vulnerable to flooding and water damage

Engineering Contradiction:

Improvesound output functionVSAvoidspeaker protection from water

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The speaker module is nested within the module case that is integrated into the refrigerator's outer case structure, placing it in a protected, enclosed environment. This nesting provides physical protection from external elements including rain and flooding, while the speaker remains functional through appropriate positioning and acoustic design.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The module case is designed with a drainage structure that proactively channels water away from the speaker module before water can cause damage. This preliminary drainage action prevents water accumulation and protects the speaker reliability in advance, addressing the flooding vulnerability before it becomes a problem.

Inventive Principle:

Principle #10Preliminary action

3Shape

If the speaker module is embedded in the refrigerator, then aesthetics and space efficiency are improved, but the speaker may be affected by cold air discharge and insulation performance

Engineering Contradiction:

Improveexternal appearance and space utilizationVSAvoidspeaker performance under cold air and insulation conditions

Core Design Contradiction:

ShapeVSReliability

Solution Approach 1:

The module case is designed with differentiated zones: the speaker module is positioned in the upper rear portion where cold air discharge is minimal, while the lower front portion includes a cold air discharge port for the refrigerator. This local quality differentiation allows the speaker to be protected from excessive cold air exposure while maintaining the refrigerator's cooling function. The drainage structure is also localized to the lower portion to manage condensation and water without affecting the speaker area.

Inventive Principle:

Principle #3Local quality

4Volume of stationary object

If the speaker module is recessed into the refrigerator structure, then space utilization is improved, but the speaker may be exposed to internal moisture and condensation

Engineering Contradiction:

Improvespace utilizationVSAvoidmoisture and condensation exposure

Core Design Contradiction:

Volume of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The module case incorporates a drainage structure with a drain hole and drainage channel that proactively collects and removes condensation and moisture from the speaker housing area. This preliminary drainage action prevents water accumulation around the speaker module, addressing the moisture hazard before it can cause damage. The drainage system is integrated into the module case design, providing continuous protection as moisture naturally accumulates.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP4443087B1refrigerator

Publication Date: 2026.05.06 LG ELECTRONICS INC

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AI summary

A refrigerator is provided. The refrigerator according to an embodiment includes a cabinet including an inner case forming a storage space, an outer case disposed outside the inner case to form an outer surface, an insulating material filled between the inner case and the outer case, and a back cover forming a rear surface; a door configured to open and close the storage space; a module case forming a recessed accommodation space on an upper surface of the outer case; a signal receiver disposed in front of the module case and configured to receive a signal provided by the user; and a speaker module disposed in the accommodation space of the module case and driven by the signal.