Refrigerator Oxygen Control With External Pump Noise Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional refrigerators fail to efficiently maintain food freshness due to high temperatures affecting gas extraction pumps and resonance noise issues when vacuum pumps and compressors operate simultaneously, which reduces oxygen control effectiveness and increases noise.
Innovation Solution
A refrigerator design featuring a gas-regulating membrane assembly and a gas extraction assembly with a separate gas extraction pump outside the compressor compartment, where the gas extraction pump introduces cooled gas into the compressor bin, and a thermal insulation layer to reduce noise and vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the gas extraction pump is provided in the compressor compartment, then the structure is simplified, but the high temperature in the compressor compartment affects the efficient operation and service life of the gas extraction pump
Solution Approach 1:
The gas extraction pump is separated from the compressor compartment and placed in an independent installation space. This segmentation allows the pump to operate in a cooler environment, improving its service life and efficiency while maintaining structural organization through dedicated mounting areas and connection pipes.
Solution Approach 2:
The gas extraction pump is extracted from the high-temperature compressor compartment and positioned in a separate location. This extraction removes the pump from the harmful thermal environment, allowing it to operate efficiently without being affected by compressor heat, while still enabling functional integration through gas pipe connections.
2Device complexity
If the gas extraction pump and compressor operate simultaneously in the same compartment, then the structure is compact, but resonance occurs which increases noise and does not meet silent operation requirements
Solution Approach 1:
The gas extraction pump is spatially segmented from the compressor by placing it in a separate installation space. This physical separation prevents mechanical resonance between the two components, significantly reducing noise while maintaining structural compactness through optimized layout and connection design.
Solution Approach 2:
The gas extraction pump is extracted from the compressor compartment to eliminate resonance-induced noise. The separate installation space allows independent operation of both components without mutual interference, achieving silent operation while preserving system compactness through efficient spatial arrangement.
3Device complexity
If the gas extraction pump operates in high temperature environment, then the structure is simplified, but the oxygen control effectiveness in the refrigerator compartment is reduced
Solution Approach 1:
By segmenting the gas extraction pump from the high-temperature compressor compartment, the pump operates in a cooler environment that maintains its extraction efficiency. This ensures precise oxygen content control in the refrigerator compartment while preserving structural simplicity through organized separation and connection design.
Solution Approach 2:
The gas extraction pump is extracted from the high-temperature environment to maintain its operational efficiency and oxygen control precision. The separate installation space allows the pump to function optimally without thermal degradation, achieving accurate oxygen content regulation while keeping the overall structure simple and organized.
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 design effectively reduces oxygen levels in the refrigerator compartment, enhancing food freshness preservation while minimizing noise and prolonging compressor service life by separating the gas extraction pump from the compressor, thus improving operational efficiency and silent operation.
Implementation Method 1
the controlled atmosphere membrane has an air inflow side coming into contact with air in the refrigerator compartment and an air outgoing side opposite to the air inflow side, and the gas-regulating membrane assembly is configured to enable an oxygen-to-nitrogen content ratio of gas entering the air outgoing side from the air inflow side to be greater than an oxygen-to-nitrogen content ratio of gas in the refrigerator compartment
Implementation Method 2
a gas extraction pump having a gas inlet pipe communicated with the air outgoing side of the controlled atmosphere membrane and a gas outlet pipe for exhausting the gas at the air outgoing side of the controlled atmosphere membrane to the compressor bin to cool the compressor
Implementation Method 3
a thermal insulation layer to reduce noise and vibration
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A refrigerator having oxygen control and freshness keeping functions, comprising a refrigerator body (100). The refrigerator body (100) has a compressor bin (14) and a refrigerator compartment (10) located above the compressor bin (14). The refrigerator further comprises an oxygen control device for reducing the content of oxygen in the refrigerator compartment (10). The oxygen control device comprises a gas-regulating membrane assembly (21) and a gas extraction assembly (22). The gas-regulating membrane assembly (21) has at least one gas-regulating membrane for selective permeation of gas. The gas extraction assembly (22) is disposed outside the refrigerator compartment (10), and is provided with a gas extraction pump (220). The gas extraction pump (220) has a gas inlet pipe (222) communicated with the gas outlet side of the gas-regulating membrane and a gas outlet pipe (221) for exhausting the gas from the gas outlet side of the gas-regulating membrane to the compressor bin (14) so as to cool a compressor. The present invention solves the problem in existing design of resonance in operation, can reduce the operation noise of the refrigerator, and can prolong the service life of the compressor and optimize the operation performance of the compressor.