Air Conditioner Door Unit for Adjustable Discharge and Noise Reduction
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Solution Overview
Problem
Conventional air conditioners often result in unpleasant temperature sensations for users due to high wind velocity and noise, and radiation-based systems are inefficient and costly.
Innovation Solution
An air conditioner design featuring a door unit with a movable door blade and controller that allows air to be discharged either straight or radially, enabling adjustable wind velocity and direction to enhance user comfort while minimizing noise and installation costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the blower fan rpm is increased to maximize air velocity and air volume, then cooling efficiency is improved, but noise increases and user comfort deteriorates due to direct exposure to high-velocity discharged air
Solution Approach 1:
The patent segments the air discharge function into two separate discharge paths: a first discharger for high-velocity air and a second discharger for low-velocity air. This segmentation allows the system to distribute cooled air through different pathways, reducing direct exposure to high-velocity air while maintaining overall cooling efficiency.
Solution Approach 2:
The patent applies local quality by providing different discharge characteristics at different locations. The first discharger (opening) provides high-velocity air for rapid cooling, while the second discharger (discharge holes in outer panel) provides low-velocity air for comfortable ambient cooling. Each discharge path is optimized for its specific function.
2Object-affected harmful factors
If radiation-based air conditioning is used instead of blower fan, then noise is reduced, but panel size must be increased which slows cooling speed and increases installation costs
Solution Approach 1:
The patent merges the advantages of both blower fan systems and radiation-based systems. It retains the blower fan for efficient air circulation while adding a radiation-like discharge path through the second discharger (discharge holes in outer panel) that provides gentle, noise-free air distribution. This combination achieves low-noise operation without sacrificing cooling speed.
3Productivity
If the heat exchanger is minimized in size and blower fan rpm is increased, then air velocity and air volume are maximized, but discharge temperature decreases and user comfort deteriorates
Solution Approach 1:
The patent segments the air discharge into two temperature/velocity zones: high-velocity air through the first discharger and low-velocity air through the second discharger. This allows the system to maintain high air volume for efficiency while providing a gentle, comfortable air stream for user exposure.
Solution Approach 2:
Different discharge qualities are provided at different locations: the first discharger delivers high-velocity air for rapid cooling effect, while the second discharger delivers low-velocity air at a more comfortable temperature for direct user exposure. Each discharge path is locally optimized for its intended function.
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
The air conditioner provides pleasant temperature sensations by controlling wind velocity and direction, reducing noise, and optimizing cooling efficiency and installation costs through adjustable discharge methods.
Implementation Method 1
a heat exchanger configured to exchange heat with air flowing into the housing
Implementation Method 2
a door blade configured to open or close the opening, and a door operating part configured to move the door blade forward or backward from the opening
Data Source
AI summary
An air conditioner of present invention comprises a housing having an outer panel forming the exterior and an opening formed on the outer panel, a heat exchanger configured to exchange heat with air flowing into the housing, and a door unit configured to open or close the opening by moving forward or backward from the opening through which the heat exchanged air is discharged. Wherein the door unit comprises a door blade configured to open or close the opening, a door operating part configured to move the door blade forward or backward, and a controller configured to control the air discharged from the opening to be moved forward from the opening in a straight line or to be discharged radially from the opening by controlling a distance between the door blade and the opening.