Refrigerator Machine Compartment Airflow Layout for Compressor Cooling
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Solution Overview
Problem
Existing refrigeration devices have inefficient cooling of compressors due to poor airflow paths, which affects the operating efficiency of the compressors.
Innovation Solution
The refrigeration device design includes a machine compartment with strategically placed air inlets and outlets, where the distance between them is longer to allow cold air to fully contact components, and a weather strip to block hot air recirculation, enhancing the cooling effect for the compressor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If air inlets and outlets are placed close to each other for simple structure, then device complexity is reduced, but cooling effect deteriorates due to insufficient cold air contact with components
Solution Approach 1:
The patent extends the airflow path from a simple linear arrangement to a three-dimensional path that traverses the machine compartment in multiple directions. The air inlet is positioned at the rear bottom while the air outlet is at the front top, creating a diagonal airflow path that maximizes the distance air travels through the compartment and increases contact with heat-generating components like the compressor and condenser.
2Temperature
If air inlet and outlet are positioned to maximize cooling path, then cooling effect is improved, but hot air recirculation to air inlet increases
Solution Approach 1:
The patent divides the machine compartment into distinct functional zones using partition walls and baffle structures. These partitions segment the airflow path into separate regions, guiding cold air from the inlet through specific zones containing heat-generating components, and directing hot air exhaust away from the inlet area. This segmentation prevents hot air recirculation while maintaining an extended cooling path.
3Device complexity
If compressor is positioned for compact layout, then device complexity is reduced, but cooling effect deteriorates due to insufficient cold air contact
Solution Approach 1:
The patent creates localized high-velocity airflow zones directly over the compressor and condenser by positioning the air inlet to direct cold air specifically at these heat-generating components. The airflow path is optimized to ensure maximum cold air contact with the compressor surfaces, providing enhanced localized cooling where it is most needed rather than uniform cooling throughout the compartment.
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 provides a better cooling effect for the compressor, improving its operating efficiency by ensuring cold air effectively removes heat and reduces hot air recirculation, leading to a more efficient refrigeration process.
Implementation Method 1
cold air can come into full contact with components in the machine compartment, to take more heat away
Implementation Method 2
the first weather strip also blocks the hot air that flows out of the air outlet from flowing to the air inlet
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A refrigeration device (100) is provided, including: a machine compartment (2), where a compressor (3), a condenser (4), and a fan (5) are disposed in the machine compartment (2); and the machine compartment (2) includes a bottom wall (6), a rear wall (7), and a first side wall (8) and a second side wall (9) disposed opposite to each other, where in the first side wall (8) and the second side wall (9), the condenser (4) is closer to the first side wall (8) than the compressor (3), and the compressor (3) is closer to the second side wall (9) than the condenser (4); and a first weather strip (10) connected to the bottom wall (6), where the first weather strip (10) extends in a front-rear direction, and the bottom wall (6) includes a first bottom wall portion (61) located between the first side wall (8) and the first weather strip (10) and a second bottom wall portion (62) located between the second side wall (9) and the first weather strip (10); the rear wall (7) includes a first rear wall portion (71) corresponding to the first bottom wall portion (61) and a second rear wall portion (72) corresponding to the second bottom wall portion (62); and at least one of the first side wall (8) and the first rear wall portion (71) is provided with an air inlet (11) used for guiding external air into the machine compartment (2), and the second bottom wall portion (62) is provided with an air outlet (12) used for discharging the air of the machine compartment (2). With the above layout, a better heat dissipation effect and higher operating efficiency are provided for the compressor.