Refrigerating and freezing device
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Solution Overview
Problem
Existing refrigerators fail to effectively isolate low-frequency vibrations in the compressor compartment, leading to poor noise reduction and degraded user experience due to closed compartment walls that only allow sound and heat to pass through heat dissipation holes.
Innovation Solution
The refrigerating and freezing device incorporates reinforcing ribs on the cabinet and compartment walls, including recessed and protruding ribs, and a noise reduction device with silencing chambers and sound absorption holes to reduce noise and vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If closed compartment walls are used in the compressor compartment, then structural strength is improved, but low-frequency vibrations cannot be isolated
Solution Approach 1:
The patent applies flexible vibration isolation structures (recessed and protruding ribs) on compartment walls that can deform to absorb low-frequency vibrations while maintaining overall structural strength. These flexible elements are integrated into the closed compartment wall structure, allowing the wall to remain strong while selectively isolating vibration frequencies.
2Temperature
If heat dissipation holes are set on compartment walls, then heat dissipation is improved, but noise isolation is worsened
Solution Approach 1:
The patent introduces sound absorption materials as intermediary substances within the heat dissipation holes and on the walls of the compressor compartment. These materials allow heat to pass through while absorbing and attenuating sound waves, serving as a mediator between heat dissipation requirements and noise isolation needs.
Solution Approach 2:
The patent utilizes porous sound absorption materials that are placed in the heat dissipation pathways. These porous structures permit thermal energy transfer while capturing and dissipating acoustic energy through tortuous flow paths and material absorption, effectively decoupling heat dissipation from noise transmission.
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 significantly reduces compressor compartment noise by altering natural frequencies and absorbing airborne sound, thereby improving sound quality and user experience.
Implementation Method 1
reinforcing ribs include a recessed rib and a protruding rib; the cabinet is also provided with a noise reduction device at least configured to reduce noise generated in the compressor compartment
Implementation Method 2
reinforcing ribs include a recessed rib and a protruding rib... significantly reduces compressor compartment noise by altering natural frequencies
Implementation Method 3
a noise reduction device with silencing chambers and sound absorption holes to reduce noise and vibrations
Data Source
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AI summary
The present application relates to a refrigerating and freezing device, including a cabinet, wherein the cabinet includes a housing and a compressor compartment connected to each other; the housing includes cabinet walls, the compressor compartment includes compartment walls; at least one cabinet wall and/or at least one compartment wall is provided with reinforcing ribs, the reinforcing ribs include a recessed rib and a protruding rib; the cabinet is also provided with a noise reduction device at least configured to reduce noise generated in the compressor compartment. In the refrigerating and freezing device of the application, recessed ribs and protruding ribs are provided on the cabinet wall and/or compartment wall, low-frequency vibrations are reduced, and together with the noise reduction device, airborne sound is absorbed, significantly reducing compressor compartment noise.