Outdoor unit for air conditioner
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Solution Overview
Problem
Existing outdoor units for air conditioners face challenges in enhancing heat exchange performance due to limited air volume and unbalanced refrigerant distribution, which affects cooling and heating efficiency.
Innovation Solution
The outdoor unit incorporates a combination of a discharge fan generating air flow in the vertical direction and a suction fan generating air flow in the horizontal direction, ensuring similar air velocities through the upper and lower portions of the outdoor heat exchanger, thereby increasing the total air volume and balancing refrigerant distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single fan is used for air flow generation, then the device complexity is reduced, but the heat exchange performance and total air volume are limited
Solution Approach 1:
The air blowing device is segmented into a discharge fan and a suction fan that operate independently. The discharge fan generates vertical air flow while the suction fan generates horizontal air flow, allowing each fan to be optimized for its specific function and collectively achieving superior heat exchange performance compared to a single fan system.
2Productivity
If air flow volume is increased to improve heat exchange, then heat exchange performance improves, but refrigerant distribution becomes unbalanced
Solution Approach 1:
Different regions of the heat exchanger receive differentiated air flow treatment. The discharge fan provides vertical air flow primarily to the upper portion while the suction fan provides horizontal air flow to the lower portion, ensuring that each region receives appropriate air velocity for balanced refrigerant distribution throughout the entire heat exchanger.
Solution Approach 2:
The system controls and balances the air velocities from the discharge fan and suction fan to achieve similar air velocities through different portions of the heat exchanger. By adjusting fan speeds and air flow parameters, the system optimizes both total air volume and refrigerant distribution simultaneously.
3Productivity
If air velocity is increased to improve heat exchange, then heat exchange performance improves, but energy consumption increases
Solution Approach 1:
The system dynamically controls the operation of the discharge fan and suction fan based on operating conditions. By independently controlling each fan's speed and operation, the system can optimize energy consumption while maintaining effective heat exchange performance, adjusting air flow parameters to match actual heating or cooling demands.
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 heat exchange performance by increasing the total air volume and balancing refrigerant distribution, leading to improved cooling and heating efficiency.
Implementation Method 1
an air blowing device, such as a fan to generate outdoor air flow to achieve effective heat exchange between the outdoor air and the refrigerant
Implementation Method 2
The outdoor unit incorporates a combination of a discharge fan generating air flow in the vertical direction and a suction fan generating air flow in the horizontal direction
Implementation Method 3
The outdoor unit achieves heat exchange between outdoor air and a refrigerant through the outdoor heat exchanger
Implementation Method 4
achieve effective heat exchange between the outdoor air and the refrigerant
Implementation Method 5
heat exchange between outdoor air and a refrigerant through the outdoor heat exchanger
Data Source
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AI summary
Disclosed herein is an outdoor unit for an air conditioner which improves heat exchange performance. The outdoor unit includes a main body having a suction hole for allowing air thereinto and a discharge hole for discharging air therefrom; a heat exchanger disposed within the main body, executing heat exchange with the air flowing through the outdoor unit; a suction fan provided at the suction hole side of the main body to generate upstream air flow into the outdoor unit; and a discharge fan provided at the discharge hole side of the main body to generate downstream air flow out of the outdoor unit.