Dual-Compressor Refrigerator Airflow Guide for Single-Fan Cooling
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Solution Overview
Problem
Refrigerators with two compressors and a single fan face challenges in efficiently distributing cooling air due to limited space, leading to difficulties in installing components and maintaining adequate cooling capacity, especially when the refrigeration load varies between the freezer and refrigerator compartments.
Innovation Solution
A guide device with stationary and moving guides is used to direct and control the airflow from a single fan to two compressors, allowing for selective distribution of air based on the refrigeration load, enabling efficient operation of both refrigeration cycles simultaneously or separately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single fan is used to blow air to two compressors, then the device complexity is reduced, but the airflow distribution efficiency deteriorates
Solution Approach 1:
The patent divides the airflow path into separate channels using guide members, allowing a single fan to effectively serve two compressors through spatial segmentation of the air flow. The guide members create distinct airflow paths that direct cooling air to each compressor independently, resolving the contradiction between using fewer fans and maintaining efficient airflow distribution.
Solution Approach 2:
The guide members act as intermediary elements between the single fan and the two compressors. These intermediaries redirect and distribute the airflow from the fan to the appropriate compressors based on operational requirements, enabling efficient airflow management without increasing the number of fans.
2Volume of stationary object
If the machinery compartment space is limited, then the installation difficulty increases, but the compressor capacity must be maintained
Solution Approach 1:
The patent employs movable guide members that can change position to direct airflow to different compressors. This dynamic capability allows the system to adapt to varying operational conditions and maintain effective cooling of both compressors within the limited machinery compartment space, making installation and operation more manageable despite spatial constraints.
Solution Approach 2:
The guide members utilize three-dimensional space within the machinery compartment to redirect airflow paths. By employing spatial arrangement and angular positioning of guides, the system effectively distributes airflow to two compressors without requiring additional horizontal or vertical space, thus maintaining compressor capacity within limited volume.
3Adaptability or versatility
If the refrigeration load varies between freezer and refrigerator compartments, then the adaptability is improved, but the airflow control complexity increases
Solution Approach 1:
The movable guide members can be dynamically positioned to direct airflow preferentially to either the freezer compressor or the refrigerator compressor based on the current refrigeration load requirements. This dynamic adjustment capability enables the system to adapt to varying operational conditions without requiring complex control mechanisms, as the guide members can be repositioned to match the dominant cooling demand.
Solution Approach 2:
The single fan system with movable guide members serves multiple functions: it can cool both compressors simultaneously, or focus cooling capacity on one compressor at a time based on operational needs. This multi-functionality allows the system to handle varying refrigeration loads across different compartments while using a unified, relatively simple airflow control structure.
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 allows for efficient heat exchange, increased compressor capacities, and flexible operation of refrigeration cycles, optimizing the use of space in the machinery compartment while maintaining effective cooling performance.
Implementation Method 1
a fan (100) disposed in the receiving space of the machinery compartment (1) and located between the compressors (20, 40)... a guide device including one or more guides (110, 120) for selectively guiding air blown by the fan (100) to the compressors (20, 40) to simultaneously cool the plurality of compressors (20, 40)
Data Source
AI summary
A refrigerator is provided. The refrigerator may include two compressors and two condensers disposed in a machinery compartment. The refrigerator may employ a single fan, also provided in the machinery compartment, to blow air to the two compressors and the two condensers.