Soundproof cover of a compressor

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Solution Overview

Problem

Conventional noise-blocking covers for compressors fail to effectively absorb and isolate noise generated by the vibration of compressors, leading to structural noise and leakage through gaps caused by vibration, which compromises soundproofing efficiency.

Innovation Solution

A soundproof cover design featuring multiple detachable covers with magnetic connections and stacked noise-reducing plates, including sound insulating, absorbing, and isolating members, to create an accommodating space around the compressor that absorbs and blocks noise effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a conventional noise-blocking cover is used to surround the compressor, then noise blocking is provided, but vibration causes gaps that allow noise leakage

Engineering Contradiction:

Improvenoise blockingVSAvoidnoise leakage prevention

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The cover is divided into multiple detachable cover bodies that can be assembled around the compressor. This segmentation allows the cover to adapt to vibration without creating continuous gaps, as each segment can move independently while maintaining coverage.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The cover design incorporates detachable and adjustable components that can dynamically adapt to the compressor's vibration. The cover bodies can be detached and repositioned to maintain proper sealing and noise blocking despite vibration-induced movements.

Inventive Principle:

Principle #15Dynamics

2Shape

If the cover is integrally formed to surround the compressor, then structural coverage is provided, but vibration cannot be effectively canceled and structural noise is generated

Engineering Contradiction:

Improvecover structureVSAvoidstructural noise

Core Design Contradiction:

ShapeVSObject-generated harmful factors

Solution Approach 1:

The integral cover is segmented into multiple detachable cover bodies. This allows vibration to be isolated between segments rather than transmitted through a continuous structure, reducing structural noise while maintaining overall coverage shape.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Sound absorbing members are introduced as intermediary elements between the compressor and the cover bodies. These members absorb vibration and prevent direct transmission to the cover structure, reducing structural noise generation.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Object-affected harmful factors

If sound absorbing members are attached directly to the compressor, then noise absorption is provided, but vibration causes friction that heats the members and deteriorates sound absorbing performance

Engineering Contradiction:

Improvenoise absorptionVSAvoidsound absorbing member temperature

Core Design Contradiction:

Object-affected harmful factorsVSTemperature

Solution Approach 1:

The sound absorbing members are positioned as intermediaries between the compressor and the cover bodies, rather than being directly attached to the compressor. This intermediary positioning reduces direct friction and heat generation while maintaining noise absorption effectiveness.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The sound absorbing members are designed with flexible characteristics that allow them to accommodate vibration without rigid friction. This flexibility reduces heat generation from friction while maintaining contact for noise absorption.

Inventive Principle:

Principle #30Flexible shells and thin films

4Ease of manufacture

If Velcro material is used to fix both ends of the cover, then assembly is simplified, but vibration widens gaps that allow noise leakage

Engineering Contradiction:

Improvecover assemblyVSAvoidnoise leakage prevention

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The cover is segmented into multiple detachable bodies that can be assembled using simple methods like Velcro. This segmentation allows each joint to be independently secured, preventing vibration from widening gaps across the entire cover while maintaining ease of assembly.

Inventive Principle:

Principle #1Segmentation

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

The solution effectively prevents noise leakage and structural noise transmission by utilizing magnetic connections and layered noise-reducing materials, enhancing soundproofing efficiency and assembly productivity.

Implementation Method 1

a magnetic connection part for detachably connecting the first cover and the second cover

Methodology Applied

Scientific EffectMagnetic connection: Magnetism

Implementation Method 2

a sound absorbing member provided at an inner surface of the cover

Methodology Applied

Scientific EffectSound absorption: Acoustic Absorption

Data Source

PatentUS11802574B2Soundproof cover of a compressor

Publication Date: 2023.10.31 LG ELECTRONICS INC

AI summary

A cover for a compressor defines an accommodating space configured to receive the compressor. The cover includes a first cover that is configured to be spaced apart from an outer surface of the compressor and that define a first portion of the accommodating space, and a second cover that is detachably attached to the first cover and configured to be spaced apart from the outer surface of the compressor and that defines a second portion of the accommodating space. The first cover and the second cover are configured to reduce transmission of noise generated from the compressor to an outside of the accommodating space.