Perforated Discharge Blade for Quiet, Draft-Controlled Airflow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional air conditioners often result in uncomfortable temperature distribution due to high wind speeds, noise, and inefficient air discharge methods, leading to user discomfort and increased construction costs.
Innovation Solution
The air conditioner features a discharge blade with blade holes and a flow path guide that allows for adjustable air flow paths, enabling control over wind speed and direction, with a housing design that includes a discharge plate and moving blade to optimize air discharge and minimize direct wind exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the RPM of the blower fan is increased to increase wind speed and wind volume, then air conditioning capability is improved, but noise is increased
Solution Approach 1:
The discharge plate is divided into multiple sections (first section, second section, third section) with different hole configurations. This segmentation allows different regions to handle air flow differently, enabling the system to achieve required air conditioning capability while distributing the wind speed across multiple discharge points rather than concentrating it in one high-speed stream, thereby reducing noise.
Solution Approach 2:
Different sections of the discharge plate have different hole sizes and distributions. The first section has larger holes for high-capacity discharge, while the second and third sections have smaller holes for distributed discharge. This local quality variation allows the system to optimize air flow in different regions, achieving effective air conditioning with lower overall wind speed and reduced noise.
2Productivity
If the blower fan RPM is increased to maximize wind speed, then air discharge capability is improved, but user comfort is worsened due to direct contact with cold discharged air
Solution Approach 1:
The discharge plate is segmented into multiple sections that discharge air through different paths and at different velocities. This segmentation disperses the cold air discharge, preventing concentrated cold drafts from directly contacting users, thereby improving comfort while maintaining effective air conditioning coverage.
Solution Approach 2:
The system changes the discharge parameters by varying hole sizes across different sections. The first section uses larger holes for higher flow capacity, while the second and third sections use smaller holes for lower velocity discharge. This parameter variation ensures that air conditioning effectiveness is maintained while reducing direct wind contact with users.
3Object-generated harmful factors
If a radiant air conditioner without a blower fan is used to reduce noise, then user comfort is improved, but the panel size must be increased and air conditioning speed becomes very slow
Solution Approach 1:
The invention merges the advantages of both blower fan systems and radiant systems. It retains a blower fan for effective air circulation and cooling speed, while incorporating a discharge plate with multiple sections that distributes air flow to reduce direct wind impact. This combination achieves noise reduction and improved comfort without sacrificing air conditioning speed, avoiding the need for a large panel size.
4Productivity
If the blower fan RPM is increased to achieve fast wind speed, then air circulation is improved, but construction costs are increased
Solution Approach 1:
The discharge plate is segmented into multiple sections with varying hole configurations, allowing the system to achieve effective air circulation without requiring excessive blower fan RPM. This segmentation enables efficient air distribution that meets cooling requirements while allowing the use of a smaller, less expensive blower fan, thereby reducing construction costs.
Solution Approach 2:
Different sections of the discharge plate are optimized for different functions, with the first section handling the majority of air flow and the second and third sections providing distributed discharge. This local optimization allows the system to achieve effective air circulation with a moderately sized blower fan, reducing overall system cost while maintaining performance.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An air conditioner (1) includes a discharge blade (50) configured to move between a guide position (50a) at which a direction of air blown from a blower fan (45) and discharged to an outlet (14) is controlled, and a closing position (50b) at which the outlet (14) is closed, wherein the discharge blade (50) includes a plurality of blade holes (56) through which the air is discharged through the discharge blade (50) at the closing position (50b), wherein the discharge blade (50) moves between the guide position (50a) and the closing position (50b) and controls an air flow from the blower fan (45) to a discharge plate (20) or the outlet (14). Through this configuration, an air flow discharged to the outside of the housing (10) can be controlled by operation of the discharge blade (50).