Movable Air Outlet Blade for Quiet, Comfortable Cooling
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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 require large panels for radiation-based cooling, which slows down cooling speed and increases installation costs.
Innovation Solution
An air conditioner with a door unit that controls air discharge direction and velocity by moving a door blade to discharge air either straight or radially, using a heat exchanger and blower fan to manage air flow and temperature distribution efficiently, allowing for different operation modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the rpm of the blower fan is increased to achieve high wind velocity, then the air volume and cooling capability are improved, but the noise level increases
Solution Approach 1:
The door blade is made movable to dynamically adjust the air discharge mode between concentrated (high velocity) and dispersed (low velocity) patterns, allowing the system to adapt cooling delivery to different operational requirements without permanently increasing fan speed and associated noise
Solution Approach 2:
The invention changes the discharge parameters (velocity distribution, flow pattern) by adjusting door blade position, enabling the same blower fan to achieve different cooling effects without changing its rotational speed, thus avoiding noise increase while maintaining cooling capability
2Productivity
If the door blade is positioned close to the opening, then the air discharge velocity is high and cooling is efficient, but the user feels cold and unpleasant due to direct exposure
Solution Approach 1:
The door blade position is made dynamically adjustable, allowing switching between close position (high velocity, efficient cooling) and distant position (dispersed flow, comfortable temperature distribution), enabling the system to adapt to different user comfort requirements
Solution Approach 2:
The invention creates different local flow characteristics by adjusting door blade position - concentrated high-velocity flow when close to the opening for efficient cooling, and dispersed low-velocity flow when distant for comfortable temperature distribution across the room
3Object-affected harmful factors
If the door blade is positioned far from the opening, then the air discharge is dispersed and user comfort is improved, but the cooling speed decreases
Solution Approach 1:
The movable door blade enables dynamic switching between dispersed discharge mode (far position, comfortable but slower cooling) and concentrated discharge mode (close position, faster cooling), allowing the system to optimize for either comfort or speed as needed
4Object-affected harmful factors
If radiation-based cooling is used instead of blower fan, then noise is reduced, but a large panel is required which increases installation costs and slows cooling speed
Solution Approach 1:
The invention merges the advantages of both radiation-based and fan-based systems by using a compact blower fan (avoiding large panels and high installation costs) while controlling it to operate at lower speeds (reducing noise) and using door blade adjustment to optimize cooling delivery 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 air conditioner provides pleasant wind velocities for users, reduces noise, and enhances cooling efficiency while minimizing installation costs by optimizing air 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.