Ceiling Air Conditioner Blade Design to Prevent Air Re-Introduction
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Solution Overview
Problem
Ceiling type air conditioners face challenges in preventing re-introduction of discharged air into the inlet and achieving comfortable wind speed for user satisfaction.
Innovation Solution
The air conditioner incorporates a housing with specific guide portions and a blade having discharge holes, where the first guide portion directs air away from the inlet and the second guide portion directs air downward, ensuring air is discharged at higher speeds through openings than through the discharge holes, preventing re-introduction and providing comfortable wind speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air is discharged through the outlet in a ceiling type air conditioner, then cooling/heating effect is achieved, but discharged air may be re-introduced into the inlet
Solution Approach 1:
The blade is divided into multiple segments with discharge holes, allowing air to be discharged through multiple paths (discharge holes and gaps between blade segments). This segmentation prevents air re-introduction by creating complex airflow patterns that avoid direct return to the inlet
Solution Approach 2:
The blade is positioned at an angle relative to the outlet, creating discharge paths in multiple spatial dimensions. The first and second openings are formed at different positions and orientations, directing air flow in three-dimensional space away from the inlet plane
2Productivity
If wind speed is increased to improve cooling/heating efficiency, then heat exchange performance improves, but user comfort decreases due to excessive wind speed
Solution Approach 1:
The blade with multiple discharge holes segments the high-speed air flow into multiple smaller streams. This divides the concentrated high-velocity flow into distributed lower-velocity streams, maintaining cooling efficiency while reducing the sensation of excessive wind speed at any single location
Solution Approach 2:
Different regions of the blade discharge air at different velocities and directions. The discharge holes and gaps create localized flow patterns that distribute air throughout the room rather than concentrating high-velocity flow in one direction, improving comfort while maintaining overall 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
The solution effectively prevents air re-introduction into the inlet and allows for various air discharge methods, ensuring comfortable room cooling and heating with minimal wind speed.
Implementation Method 1
The housing may include a first guide portion to guide air discharged through the first opening in a direction away from the inlet.
Implementation Method 2
The first opening may be configured to discharge air at a speed faster than a speed of air discharged through the plurality of discharge holes
Implementation Method 3
The housing may include a second guide portion to guide air discharged through the second opening in the direction of gravity.
Data Source
AI summary
Disclosed herein is an air conditioner. The air conditioner includes a housing having an inlet and an outlet, a blade having a plurality of discharge holes and provided to discharge air through the plurality of discharge holes, a first opening formed between one side of the blade near the inlet and the housing when the blade discharges air through the plurality of discharge holes, and a second opening formed between the housing and the other side opposite to the one side of the blade when the blade discharges air through the plurality of discharge holes.