Ceiling Air Conditioner Main and Sub-Blade Airflow Control
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Solution Overview
Problem
Ceiling type air conditioners often cause discomfort due to the direction of airflow, with cooling air falling downward and heating air rising upward, affecting occupant comfort.
Innovation Solution
A ceiling type air conditioner with a blade structure that includes a main blade and a sub-blade, controlled by a hinge and guide member, allowing airflow direction adjustment at various angles without reducing air volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air is discharged during cooling operation, then cooling effect is achieved, but air falls downward causing discomfort to occupants
Solution Approach 1:
The blade structure is divided into a main blade and a sub-blade that can independently rotate. The main blade controls the primary discharge direction while the sub-blade adjusts the airflow angle, allowing the system to segment the airflow control function and achieve both cooling effect and comfort by preventing direct downward discharge.
2Temperature
If air is discharged during heating operation, then heating effect is achieved, but air rises upward lowering sensible temperature in occupied space
Solution Approach 1:
The blade structure employs dynamic rotation capability where both the main blade and sub-blade can rotate to different angles. During heating operation, the blades rotate to direct air downward, dynamically adapting the discharge direction to counteract the natural upward rise of heated air and maintain sensible temperature in the occupied space.
3Object-affected harmful factors
If airflow direction is controlled to prevent downward discharge, then occupant comfort is improved, but air volume may be reduced
Solution Approach 1:
The sub-blade rotates to adjust the airflow in a secondary dimension (angle) rather than restricting the primary discharge direction. This dimensional adjustment allows the system to redirect air away from downward discharge while maintaining the overall air volume and discharge capacity, improving comfort without sacrificing airflow quantity.
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
Improves occupant comfort by preventing cold airflow from falling downward during cooling and increasing sensible temperature during heating by allowing air to reach a longer distance.
Implementation Method 1
a heat exchanger provided inside the housing to exchange heat with air suctioned through the inlet
Implementation Method 2
a blade structure that includes a main blade and a sub-blade, controlled by a hinge and guide member, allowing airflow direction adjustment at various angles
Data Source
Figure 1
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AI summary
A ceiling type air conditioner according to the disclosure includes a housing having an inlet and an outlet, a heat exchanger provided inside the housing to exchange heat with air suctioned through the inlet, a blower fan configured to cause the air having heat exchanged with the heat exchanger to flow such that the air having heat exchanged is discharged through the outlet, and a blade unit configured to guide the air discharged to the outlet. The blade unit includes a main blade, a sub-blade, and a guide link provided to guide a movement of the sub-blade.