Ceiling Cassette Airflow Layout for Uniform Cooling and Dry Louvers
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Solution Overview
Problem
Conventional ceiling-embedded air conditioners face issues with non-uniform temperature distribution and condensation on the louver due to uneven air flow, which complicates the structure and increases manufacturing costs.
Innovation Solution
A ceiling-embedded air conditioner design featuring a decorative panel with blow-out ports on all sides, including corners, and a rotatable louver with decreasing width from center to ends, along with depressed sections and projections on the drain pan to guide air flow uniformly and prevent condensation, allowing air to be blown in all desired directions without additional components at corner portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If blow-out ports and louvers are added to corner portions of the decorative panel to enable air blowing in all directions, then uniform temperature distribution in the room is improved, but the structure becomes complex and manufacturing cost increases
Solution Approach 1:
The decorative panel is segmented into multiple blow-out ports positioned at four locations (including corners), allowing air to be blown in multiple directions simultaneously. This segmentation enables uniform temperature distribution without requiring complex additional components at corner portions, as each segment independently contributes to the overall air distribution.
Solution Approach 2:
The air passage is designed with a integrated structure that combines multiple functions: guiding air from the heat exchange unit, distributing it to multiple blow-out ports including corner portions, and regulating flow through integrated flow regulating openings. This merging of functions into a single air passage structure reduces overall device complexity while achieving uniform temperature distribution.
2Object-affected harmful factors
If the air passage structure is made complex to blow air toward the lower surface of the louver and prevent condensation, then condensation prevention is improved, but the number of parts increases and manufacturing cost rises
Solution Approach 1:
The air passage has different cross-sectional areas at different locations: a larger cross-sectional area at the inlet and a smaller cross-sectional area at the outlet. This local variation in geometry creates a pressure gradient that directs air flow toward the lower surface of the louver, preventing condensation without requiring complex additional structures. The flow regulating openings are also strategically positioned to optimize local air distribution.
Solution Approach 2:
The air passage parameters (cross-sectional area, opening positions) are optimized to change along the flow direction. The cross-sectional area decreases from inlet to outlet, and flow regulating openings are positioned at specific locations to control air flow velocity and direction. These parameter changes naturally guide air toward the lower louver surface, preventing condensation through physics-based flow control rather than complex mechanical structures.
3Temperature
If additional blow-out ports and louvers are installed at corner portions to improve air distribution, then room air-conditioning uniformity is improved, but manufacturing cost increases
Solution Approach 1:
The air passage serves multiple functions simultaneously: it guides air from the heat exchange unit, distributes air to all four blow-out ports (including corners), regulates flow through integrated openings, and prevents condensation through its geometric design. This multi-functionality eliminates the need for separate corner-specific components, reducing part count and manufacturing cost while achieving uniform air-conditioning.
Solution Approach 2:
The air passage utilizes three-dimensional space efficiently with its tapered geometry (larger inlet, smaller outlet) and strategically positioned flow regulating openings. This dimensional optimization allows the air passage to perform multiple functions that would traditionally require separate components, reducing manufacturing complexity and cost while maintaining effective air distribution to all directions including corners.
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
This design ensures uniform air conditioning of the room with a simpler structure, reducing manufacturing costs and effectively preventing condensation on the louver by optimizing air flow and temperature distribution.
Implementation Method 1
an air blower... rotation of the air blower causes the indoor air to be sucked from a suction port
Implementation Method 2
The sucked indoor air is subject to the heat exchange by the heat exchange unit
Implementation Method 3
The air passing through the heat exchange unit and flowing along the air passage is under the influence of a centrifugal force
Implementation Method 4
a louver configured to change the blow-out direction is rotatably provided in each of the blow-out ports
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
An air passage has a blow-out side opening opposed to a position other than the longitudinal ends of a blow-out port 12 of a decorative panel 5. The width of a louver, as determined in an air-blowing direction, decreases from a longitudinal center of the louver to the ends of the louver.