Ceiling Cassette V-Shaped Flow Guide Plate for Balanced Air Discharge
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Solution Overview
Problem
Existing double-sided air discharge ceiling cassettes suffer from non-uniform air discharge volumes and wind speed distribution due to the air discharge characteristics of the centrifugal fan wheel and its mounting position, leading to inefficiencies in air flow and heat exchange.
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 between heat exchangers, optimizing air outlet positioning and flow guide holes to enhance air distribution and volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a forward centrifugal fan wheel is used with standard mounting position, then the fan can be easily installed, but the air discharge volume difference between two sides becomes large and total air volume is reduced
Solution Approach 1:
A flow guide plate is introduced as an intermediary component between the centrifugal fan wheel and the air discharge outlets. This flow guide plate redirects and balances the airflow from the fan, ensuring uniform air discharge volumes on both sides while maintaining the standard fan mounting position and ease of installation.
2Volume of moving object
If the centrifugal fan is mounted close to the air outlet, then the device structure is compact, but the wind speed distribution on heat exchanger surfaces becomes non-uniform
Solution Approach 1:
The flow guide plate serves as a mediator that redistributes the airflow between the compactly mounted fan and the heat exchangers. It ensures uniform wind speed distribution on the heat exchanger surfaces while maintaining the compact device structure with the fan positioned close to the air outlet.
3Volume of moving object
If the air outlet is positioned close to the case due to fan mounting constraints, then the device is more compact, but the air discharge is greatly affected by resistance
Solution Approach 1:
The flow guide plate acts as an intermediary that reduces flow resistance by optimizing the airflow path from the compactly positioned air outlet to the heat exchangers. It maintains compact device dimensions while improving total air volume by minimizing resistance losses.
4Device complexity
If no flow guide plate is used, then the device structure is simple, but the air discharge volumes on two sides are highly unequal
Solution Approach 1:
The flow guide plate is a relatively simple intermediary component that achieves balanced air discharge on both sides. It adds minimal structural complexity while dramatically improving air discharge uniformity, making it a cost-effective solution to the asymmetry problem.
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 of approximately 50% from each side, improving air flow uniformity and total air volume, resulting in more efficient air discharge and heat exchange.
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
Figure 1
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AI summary
The present application discloses a double-sided uniform air discharge ceiling cassette, comprising a case 1, and a centrifugal fan wheel 4, a first heat exchanger 2, and a second heat exchanger 3 which are mounted within the case 1, the first heat exchanger 2 and the second heat exchanger 3 respectively forming an air discharge duct 11 with two inner side walls of the case 1, the centrifugal fan wheel 4 being located between the first heat exchanger 2 and the second heat exchanger 3, and an air outlet of the centrifugal fan wheel 4 facing an inner top face of the case 1, wherein the inner top face of the case 1 is provided with a flow guide plate 5, wherein the flow guide plate 5 is of a V-shaped structure with an included angle, and the included angle of the flow guide plate 5 faces the air outlet of the centrifugal fan wheel 4.