Outdoor Unit Blower Layout for Uniform Heat Exchanger Airflow
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Solution Overview
Problem
The existing outdoor units of air conditioners face inefficiencies in air distribution across the heat exchanger, leading to wasted wind and increased power consumption when trying to enhance performance, as the blower size cannot be enlarged without increasing motor load and costs, and the current arrangement of blower and heat exchanger does not allow for uniform air passage.
Innovation Solution
Optimizing the relative arrangement and configuration of the heat exchanger and blower by positioning the air blowing ports closer to each other and utilizing cylindrical bell mouths to effectively utilize wasted wind, allowing for increased air and wind velocity distribution without enlarging the blower, thus enhancing heat exchange capacity and reducing motor current consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the heat exchanger capacity is enlarged to increase output, then the heat exchange capacity is improved, but the amount of air per unit area passing through the heat exchanger decreases and power consumption increases
Solution Approach 1:
The patent applies asymmetry by positioning the blower and heat exchanger in an asymmetric arrangement rather than a symmetric one. The blower is positioned to blow air toward a specific region of the heat exchanger, creating an asymmetric air flow pattern that increases the amount of air passing through the heat exchanger fins per unit area, thereby improving heat exchange capacity without increasing power consumption.
Solution Approach 2:
The patent utilizes the vertical dimension by positioning the air blowing port of the blower above the heat exchanger and directing air downward. This vertical air flow arrangement allows for more effective utilization of the air flow path, increasing the amount of air passing through the heat exchanger without requiring additional horizontal space or enlarging the blower size.
2Productivity
If the blower fan size is enlarged to increase air output, then the air blowing performance is improved, but the motor load and power consumption increase
Solution Approach 1:
The patent applies local quality by concentrating the air flow from the blower into a specific target region of the heat exchanger rather than distributing it uniformly. The asymmetric positioning directs the air flow toward a specific area, creating a localized high-velocity air stream that passes through more heat exchanger fins, thereby improving air blowing performance without requiring a larger blower or motor.
3Quantity of substance
If the heat exchanger size is increased without changing blower arrangement, then the heat exchange capacity is improved, but the wind velocity distribution becomes uneven and wind is wasted
Solution Approach 1:
The patent applies preliminary action by pre-positioning the blower in an asymmetric arrangement that directs air flow toward a specific region of the heat exchanger before the air actually contacts the heat exchanger. This preliminary directional positioning ensures that the air flow is optimally distributed across the heat exchanger fins, preventing waste of wind and maximizing heat exchange efficiency.
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 enhances the heat exchange capacity and operation efficiency of the outdoor unit without enlarging the blower, reducing motor current consumption and preventing unnecessary increases in assembly time and costs, while maintaining stable air blowing performance.
Implementation Method 1
the amount of air passing through a front portion, a side portion, and a rear portion of the heat exchanger is not uniform
Implementation Method 2
a machine chamber having a heat exchanger and a compressor
Data Source
AI summary
Provided is an outdoor unit of an air conditioner capable of obtaining stable air blowing performance without enlarging a blower fan and decreasing the amount of air per unit area (wind velocity distribution) passing through the heat exchanger even if the capacity of the heat exchanger is enlarged by optimizing a relative arrangement and a configuration of a heat exchanger and a blower and effectively utilizing the wind of the blower which is conventionally wasted. The rotation shaft of the first blower is disposed closer to the center line in the lateral direction of the housing than the center line in a lateral direction of the left blower chamber, and the rotation shaft of the second blower is disposed closer to the center line in the lateral direction of the housing than the center line in a lateral direction of the right blower chamber.