Ventilation Flap Motor Control Using Current Flow Detection
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Solution Overview
Problem
Existing ventilation flap control systems are cumbersome and costly to integrate with existing ventilation units, and current solutions are either overly complex or prone to energy losses due to sensitivity in detecting air drafts or power levels.
Innovation Solution
A device with a current flow sensor and processor that switches the flap motor based on current flow signals, allowing the ventilation flap to be controlled independently of the ventilation unit's control system, enabling seamless integration with any ventilation unit by detecting changes in current flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a sensor that measures air flows is used to switch the ventilation flap, then the flap can be automatically controlled, but the sensor is overly sensitive and opens the flap even when only a small draft flows
Solution Approach 1:
The patent changes the detection parameter from air flow measurement to current flow measurement. By monitoring the current consumption of the ventilation unit, the system determines when the unit is actually operating, avoiding false triggers from minor drafts while maintaining reliable automatic control.
2Adaptability or versatility
If the control of the ventilation unit is designed for connection of an adjustable ventilation flap, then the flap can be integrated with the ventilation unit, but the construction costs increase and existing ventilation units cannot be retrofitted
Solution Approach 1:
The patent extracts the flap control function from the ventilation unit's main control system. The flap motor controller operates independently by monitoring current flow through the ventilation unit, allowing integration without modifying the ventilation unit's control architecture and enabling retrofitting of existing units.
3Ease of operation
If manual or motorized ventilation flaps are used, then the flaps can control air flow, but they must be opened and closed separately when the ventilation unit is switched on or off, which is cumbersome
Solution Approach 1:
The patent implements self-service automation where the flap motor controller automatically opens or closes the flap based on detected current flow changes. When the ventilation unit starts (current increases), the flap opens automatically; when the unit stops (current decreases), the flap closes automatically, eliminating manual intervention.
4Measurement precision
If a multiple socket with power level sensor is used, then the power level of a consumer can be detected, but the control for a flap motor cannot be realized
Solution Approach 1:
The patent creates a universal solution where the same current flow monitoring device can control flap motors from different manufacturers. By detecting current flow patterns rather than requiring manufacturer-specific protocols, the system achieves broad compatibility while maintaining precise detection capability.
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 provides a safer and more efficient method to control ventilation flaps, reducing energy losses by accurately detecting current flow changes and allowing for targeted movement of the flap, thereby optimizing energy usage without requiring modifications to existing ventilation units.
Implementation Method 1
a current flow sensor (14) and a processor (12) which is connected to the current flow sensor (14), wherein the flap motor (10) can be switched on and/or off depending on a current flow signal from the current flow sensor (14)
Data Source
AI summary
The box (2) has a cover (4) rotated around a rotational axis (10) lying transverse to a passage direction of air flowing through the box. The cover is movable back and forth by utilizing rotating motion around the axis between the opening and closing positions. The cover is held by a frame part (6) and is movable between open and closing positions by utilizing a motor drive (16). The frame part and/or the cover exhibit a seal element by which a gap (8) between the frame part and the cover is sealed in the closing position of the cover.