Double-sided uniform air discharge ceiling cassette
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Solution Overview
Problem
Existing double-sided air discharge ceiling cassettes suffer from significant differences in air discharge volumes between sides, non-uniform wind speed distribution on heat exchanger surfaces, and a small total air volume due to limitations in fan wheel air discharge characteristics and mounting positions.
Innovation Solution
A double-sided uniform air discharge ceiling cassette design featuring a V-shaped flow guide plate with adjustable included angles to direct airflow uniformly across both sides, enhancing air distribution and heat exchange efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a forward centrifugal fan wheel is used with conventional mounting position, then the fan can be simply installed, but the air discharge volumes on two sides show large difference and wind speed distribution is non-uniform
Solution Approach 1:
A flow guide plate is introduced as an intermediary component between the centrifugal fan wheel and the air discharge outlets. The flow guide plate redirects and distributes the airflow from the fan, ensuring uniform air discharge volumes on both sides while maintaining the simple forward centrifugal fan wheel configuration.
Solution Approach 2:
The airflow parameters are modified by introducing the flow guide plate, which changes the flow direction and distribution characteristics. This allows the system to achieve uniform air discharge while maintaining the original fan wheel design and mounting position.
2Volume of moving object
If the centrifugal fan is mounted close to the air outlet, then the device structure is compact, but the flow state within the case is poor and total air volume is reduced
Solution Approach 1:
The flow guide plate serves as a mediator that improves the flow state within the compact case structure. It guides the airflow more effectively, reducing resistance and improving the flow state, thereby increasing the total air volume despite the compact mounting arrangement.
Solution Approach 2:
By changing the airflow parameters through the flow guide plate, the system overcomes the negative effects of compact mounting. The flow guide plate modifies the flow characteristics to reduce resistance and improve overall airflow 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 solution achieves balanced air discharge volumes from both sides, increases the total air volume, and ensures more uniform air discharge and heat exchange, addressing the deficiencies of prior art.
Implementation Method 1
the inner top face of the case is provided with a flow guide plate, wherein the flow guide plate is of a V-shaped structure with an included angle, and the included angle of the flow guide plate faces the air outlet of the centrifugal fan wheel
Implementation Method 2
a centrifugal fan wheel, a first heat exchanger, and a second heat exchanger which are mounted within the case, the first heat exchanger and the second heat exchanger respectively forming an air discharge duct with two inner side walls of the case, the centrifugal fan wheel being located between the first heat exchanger and the second heat exchanger
Implementation Method 3
a first heat exchanger, and a second heat exchanger which are mounted within the case, the first heat exchanger and the second heat exchanger respectively forming an air discharge duct with two inner side walls of the case
Data Source
AI summary
A double-sided uniform air discharge ceiling cassette, including a case, and a centrifugal fan wheel, a first heat exchanger, and a second heat exchanger which are mounted within the case, the first heat exchanger and the second heat exchanger respectively forming an air discharge duct with two inner side walls of the case, the centrifugal fan wheel being located between the first heat exchanger and the second heat exchanger, and an air outlet of the centrifugal fan wheel facing an inner top face of the case, the inner top face of the case is provided with a flow guide plate, the flow guide plate is of a V-shaped structure with an included angle, and the included angle of the flow guide plate faces the air outlet of the centrifugal fan wheel.