Air Supply Device Bypass Valve Fresh Air Ratio Control
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Solution Overview
Problem
Existing air supply devices lack the ability to adjust the ratio of fresh air and circulated room air, limiting their flexibility in controlling airflow rates.
Innovation Solution
An air supply device with a bypass valve and adjusting means that allows for continuous adjustment of fresh air supply, incorporating a sliding plate and movable plate to control the flow of fresh air into the mixing chamber, enabling adjustable ratios of fresh and circulated air.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed air supply device is used, then the structure is simple, but the ability to adjust fresh air and circulated room air ratio is limited
Solution Approach 1:
The air supply device is divided into separate functional components: a first air channel for fresh air supply, a second air channel for circulated room air supply, and a mixing chamber. This segmentation allows independent control of each air stream while maintaining overall system simplicity.
Solution Approach 2:
The patent introduces adjustable openings in the air supply device that can be dynamically modified to change the ratio of fresh air to circulated room air. The openings allow the device to adapt to different ventilation requirements while maintaining a relatively simple fixed structure.
2Ease of operation
If the air supply device is made adjustable, then the flexibility is improved, but the device complexity increases
Solution Approach 1:
The device utilizes the pressure difference between the fresh air supply and the mixing chamber to automatically regulate airflow through the openings. This self-regulating mechanism reduces the need for complex external control systems while maintaining ease of operation.
Solution Approach 2:
The adjustable openings serve multiple functions: they control the fresh air to circulated air ratio, allow for different ventilation modes, and can be integrated with various air supply configurations. This multi-functionality reduces the need for separate control mechanisms for each function.
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
Enables continuous adjustment of fresh air supply, allowing precise control over the ratio of fresh and circulated air, enhancing flexibility and efficiency in air management.
Implementation Method 1
a heat exchanger arranged inside the mixing chamber for controlling the circulated room air temperature
Implementation Method 2
an adjustable bypass valve is provided between the supply air chamber and the mixing chamber for conducting and adjusting additional fresh air supply directly from the supply air chamber into the mixing chamber
Implementation Method 3
The flow of fresh air induces the circulated airflow to flow from the room into the mixing chamber
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3a~3b
AI summary
An air supply device (100) for controlling air supply into a room space, comprising means to supply fresh air from a supply air chamber 10 into a nozzle chamber 30 and further from the nozzle chamber into the mixing chamber 20. A circulated room air LR is induced from the room space into the mixing chamber by fresh air L1 flow from the nozzle chamber into the mixing chamber, wherein the fresh air and the circulated room air is mixed and diffused into the room space. Further, the air supply device comprises bypass valve 50 for additional fresh air L2 supply from the supply air chamber directly into the mixing chamber 20.