Outdoor unit of air-conditioning apparatus and method of assembling outdoor unit of air-conditioning apparatus
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing soundproof structures for compressors in outdoor air-conditioning units face issues with noise leakage due to incomplete coverage and difficulty in attaching soundproof materials around refrigerant pipes and components, leading to inefficient noise reduction and assembly challenges.
Innovation Solution
The proposed solution involves attaching a lower soundproof material to the compressor before brazing the refrigerant pipe, ensuring complete coverage, and then attaching an upper soundproof material after pipe connection, using a dual-layer soundproof material with a hook-and-loop fastener system to enhance coverage and ease of assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If soundproof material is attached after brazing refrigerant pipe to compressor, then soundproof material is not burned by brazing, but soundproof material cannot fully cover compressor leg portions and assembly becomes difficult
Solution Approach 1:
The soundproof material is divided into multiple segments: a first soundproof material attached before brazing to cover the compressor body, and a second soundproof material attached after brazing to cover the compressor leg portions. This segmentation allows each material to be attached at the appropriate time without interference from brazing heat or refrigerant pipe components, resolving the contradiction between material integrity and coverage completeness.
2Ease of operation
If soundproof material is inserted in lateral direction of compressor, then material can be attached, but refrigerant circuit components become obstacles to attachment work
Solution Approach 1:
The first soundproof material is attached to the compressor body before the refrigerant pipe is brazed and before other refrigerant circuit components are installed. This preliminary attachment eliminates obstacles during the attachment process, allowing the soundproof material to be securely fixed without interference from pipes or components that would otherwise block access to the compressor.
3Device complexity
If single soundproof material is used to cover compressor, then assembly is simple, but noise leakage occurs from gaps and soundproof effect is insufficient
Solution Approach 1:
Different soundproof materials are used for different regions of the compressor: the first soundproof material covers the main body where general noise reduction is needed, while the second soundproof material specifically covers the leg portions where noise leakage was problematic. This localized approach ensures comprehensive noise control while maintaining attachment feasibility, resolving the contradiction between simplicity and effectiveness.
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
This configuration improves the attachment workability and efficiency of soundproof materials, ensuring effective noise reduction by fully covering the compressor and preventing material damage during assembly, while enhancing the soundproof effect by covering gaps between soundproof layers.
Implementation Method 1
a soundproof material is attached to cover the compressor. The soundproof material has a band-like shape and includes a sound absorption layer on the inner side and single or multiple sound insulation layers on the outer side
Implementation Method 2
A hook-and-loop fastener provided on the projecting part of the sound insulation layer can be secured to a hook-and-loop fastener provided on an external face of the other end portion of the soundproof material
Data Source
AI summary
An outdoor unit of an air-conditioning apparatus enabling a soundproof material to correctly cover a compressor and having enhanced assembling efficiency and a method for assembling the outdoor unit of an air-conditioning apparatus are provided. The outdoor unit of an air-conditioning apparatus includes the compressor installed inside a casing and the soundproof material covering at least the compressor. The soundproof material includes a lower soundproof material surrounding a lateral periphery of a lower portion of the compressor and an upper soundproof material surrounding a lateral periphery of an upper portion of the compressor.