Air conditioner
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Solution Overview
Problem
Conventional air conditioners often result in unpleasant temperature sensations for users due to direct exposure to discharged air and increased noise from high blower fan speeds, and they require larger panels for radiation types, which slow cooling and increase installation costs.
Innovation Solution
An air conditioner with a guide unit that controls airflow by selectively opening or closing the outlet, allowing for varying wind velocities and directions, using a blower fan and motor-driven gears to manage airflow, enabling different operation modes such as no wind, direct-wind, and indirect-wind modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the blower fan rotation speed is increased to achieve high wind velocity, then the cooling speed is improved, but the noise level increases
Solution Approach 1:
The guide unit is designed to be rotatable, allowing dynamic adjustment of the outlet opening area and airflow direction. This enables the system to optimize wind velocity and noise levels by changing the guide unit's rotational position, providing different operation modes (no wind, direct-wind, indirect-wind) to suit various user needs while controlling noise exposure.
2Productivity
If the outlet opening area is increased to improve cooling speed, then the air volume increases, but the user may feel unpleasant due to direct exposure to discharged air
Solution Approach 1:
The guide unit's rotatable design allows dynamic control of the outlet opening area. By rotating the guide unit to different positions, the system can adjust the effective opening area to optimize cooling speed while controlling the direction and distribution of discharged air to prevent direct exposure to users, thus eliminating unpleasant sensations.
Solution Approach 2:
The guide unit selectively opens or closes different portions of the outlet by rotation. This local control mechanism allows specific areas of the outlet to be opened or closed, enabling precise control over airflow distribution and direction, thereby achieving both efficient cooling and user comfort by directing air away from users while maintaining adequate cooling speed.
3Speed
If the heat exchanger is minimized in size and the blower fan rpm is increased, then the air velocity and air volume are maximized, but the discharge temperature decreases and user comfort deteriorates
Solution Approach 1:
The rotatable guide unit enables dynamic adjustment of airflow characteristics. By rotating the guide unit to different positions, the system can control the distribution and velocity of discharged air, allowing optimization of discharge temperature and air velocity to maintain user comfort while achieving efficient cooling or heating.
4Object-affected harmful factors
If the outlet is completely closed to prevent air discharge, then user comfort is improved by eliminating direct wind exposure, but cooling or heating efficiency decreases
Solution Approach 1:
The rotatable guide unit provides dynamic control over outlet opening area and airflow direction. The system can rotate the guide unit to positions that partially open the outlet, allowing controlled air discharge that prevents direct wind exposure to users while maintaining adequate cooling or heating efficiency. This enables the system to operate in different modes (no wind, direct-wind, indirect-wind) to balance comfort and 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 can blow air at varying wind velocities, ensuring user comfort by controlling airflow distribution and reducing noise, while maintaining efficient cooling or heating without direct exposure to discharged air, thus enhancing user satisfaction and reducing installation costs.
Implementation Method 1
a heat exchanger arranged inside the housing for exchanging heat with air moved into the housing
Implementation Method 2
a blower fan configured to suck air into the housing and move air toward the outlet
Data Source
AI summary
An air conditioner includes a heat exchanger for exchanging heat with air brought into a housing, and a blower fan for blowing air that has exchanged heat with the heat exchanger out of the housing, and controls a guide unit that opens or closes part of an outlet provided in the housing to blow out various flows of air.