Air guiding device and method for ventilating buildings
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Solution Overview
Problem
Existing ventilation systems lack the ability for simple retrofitting and individual control of air quality and flow, with complex structures preventing installation in existing systems and continuous measurement of air quality when valves are closed.
Innovation Solution
An air guidance device with a self-configuring system bus and autonomous valve units that can be easily installed in existing systems, featuring sensors for continuous measurement of air parameters even when valves are closed, and a control unit that adjusts valve operations based on measured data, allowing for individual room control and optimal ventilation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If valve units are used to control air flow in existing ventilation systems, then individual room control is enabled, but the complex structure prevents installation in existing systems
Solution Approach 1:
The ventilation system is divided into independent valve units, each controlling a specific room or air flow path. Each valve unit contains its own sensor and control logic, allowing modular installation in existing systems without requiring complete system replacement. This segmentation enables individual room control while maintaining compatibility with legacy infrastructure.
2Ease of operation
If valves are closed to control air flow, then individual room ventilation is regulated, but continuous measurement of air quality becomes impossible
Solution Approach 1:
A bypass channel is introduced as an intermediary path that allows a portion of air to flow around the closed valve. Sensors are positioned in this bypass channel to continuously measure air quality parameters (CO2, humidity, temperature) even when the main valve is closed for flow control. This intermediary path ensures uninterrupted monitoring capability.
Solution Approach 2:
Instead of completely blocking air flow when the valve closes, the system allows partial flow through the bypass channel. This excessive action (providing more flow path than strictly necessary for measurement) ensures that sufficient air reaches the sensors for accurate continuous measurement while still achieving the primary flow control objective.
3Ease of operation
If manual adjustment is required for different room volumes, then flow control is achieved, but installation requires professional operator intervention
Solution Approach 1:
Each valve unit is equipped with integrated sensors and automatic control logic that enable self-adjustment based on measured air quality parameters and room characteristics. The system performs self-calibration and automatic flow optimization without requiring manual intervention from professional operators during installation or operation, significantly simplifying the deployment process.
4Productivity
If individual control of room air is implemented, then ventilation optimization is enabled, but system complexity increases
Solution Approach 1:
The control system is segmented into independent valve units, each with its own sensor suite and control logic. This distribution of intelligence across multiple independent modules enables individual room optimization without requiring a complex centralized control system, reducing overall system complexity while maintaining advanced ventilation optimization capabilities.
Data Source
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AI summary
The invention relates to an air distribution device (25) and a method for building ventilation in residential, office, and commercial spaces. Equipment is installed in buildings for ventilation, cleaning, and analysis of the airflow in these spaces. Air distribution devices (25) are used to ventilate individual rooms of varying volumes within the buildings. The air distribution device (25) comprises a valve unit (1) which has a modular design and is assigned to at least one room. The airflow in each room can be analyzed and controlled by means of at least one sensor (42) and a control unit (2) located in the valve unit (1) based on a parameter of the exhaust or supply air. Analysis is also possible when the valve unit (1) is closed.