Integrated Air Flow Control System for HVAC Inlet Damper Regulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing systems for controlling air flow in building HVAC systems are inefficient, leading to uncontrolled air flow adjustments and increased energy consumption, as they lack a compact and integrated solution for flow measurement and damper regulation.
Innovation Solution
A system with a common printed circuit board hosting a processor and magnetic position detection means for damper control, utilizing ultrasound transducers for flow measurement and communication with a central control system to adjust damper positions for precise air flow regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional air conditioning systems use manual adjustment for air flow control, then the system structure remains simple, but the air flow control precision deteriorates and energy consumption increases
Solution Approach 1:
The patent combines the flow measurement function and damper control function into a single integrated control unit. The control unit includes a microcontroller that processes flow measurements from ultrasonic transducers and automatically adjusts the damper position, merging what were previously separate manual operations into one automated system. This resolves the contradiction by providing precise automated control without requiring complex separate systems for measurement and control.
Solution Approach 2:
The control system performs self-service by automatically measuring air flow using ultrasonic transducers, calculating the actual flow, and adjusting the damper position without manual intervention. The system monitors its own performance and makes corrections autonomously, eliminating the need for manual adjustment while maintaining simple operation for the user.
2Reliability
If air flow is not controlled at each inlet, then the system operation is simple, but air flow changes at one outlet affect other parts of the system
Solution Approach 1:
The patent implements independent control at each air inlet by placing a separate control unit with flow measurement and damper adjustment capabilities at each location. This segmentation allows each inlet to be controlled independently, preventing flow changes at one outlet from affecting other parts of the system, while maintaining overall system simplicity through standardized modular units.
Solution Approach 2:
The control system uses feedback from ultrasonic flow measurements to automatically adjust damper positions and maintain stable air flow. The system continuously monitors actual flow and makes corrections to keep flow within desired parameters, ensuring reliability without requiring complex manual coordination between different system parts.
3Productivity
If flow measurement and damper control use separate systems, then each component is simpler, but the overall control effectiveness deteriorates
Solution Approach 1:
The patent merges flow measurement and damper control into a single integrated control unit with a microcontroller that processes measurements and executes control actions. This integration improves control effectiveness by ensuring tight coupling between measurement and actuation, while the modular design keeps individual component complexity manageable.
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 solution enables effective control of air flow in each air inlet, reducing energy consumption and improving the efficiency of HVAC systems by continuously measuring and adjusting air flow to meet actual demands, minimizing power loss and optimizing air distribution.
Implementation Method 1
Flow measurement performed by ultrasonic method is one of the more effective ways of measuring air flow. Especially by using a path first in one direction and then in the second opposite direction it is possible by measurement of the difference in time delay to achieve information about a flow velocity.
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The present invention relates to a system for control of a flow of a media in a duct. It is the object of the pending patent application to achieve an effective control of inlet air in a heating or air condition systems in buildings. The object can be achieved by the system where the flow measurement and the damper control is performed by a common control system, which control system comprises at least one common printed board, which printed board comprises at least one processor, which printed board further comprises position detection means for detecting the actual position of the damper. Hereby can be achieved that all electronic functions necessary for control the inlet flow of air can be achieved at one common electronic circuit placed on one single printed board. It is further possible that a common processor takes care of flow calculation and also takes care of damper regulation. In that way highly effective control of the inlet air can be achieved. Actual flow is measured and if a difference to a fixed value exists then a damper can be adjusted so that the correct air flow is achieved. By continuously measuring air flow it is possible even to adjust a flow level into what is necessary in an office or a room.