Humidification Filter Rotation Control for Obstruction Recovery
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Solution Overview
Problem
Air purifiers with disk-type humidification filters face issues when foreign objects obstruct the rotation, leading to degraded humidification performance and requiring manual maintenance to resolve the constraint state.
Innovation Solution
An air purifier equipped with a sensing unit and controller that adjusts the rotational speed and direction of the humidification filter using a stepping motor to maintain normal operation, ensuring the filter rotates correctly and removes foreign objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sensing unit and controller are added to detect and control humidification filter rotation, then the reliability of continuous operation is improved, but the device complexity increases
Solution Approach 1:
The sensing unit continuously monitors the rotation state of the humidification filter and provides feedback signals to the controller. When abnormal rotation or constraint is detected, the controller automatically activates the driving source to rotate the filter in reverse or at varying speeds, eliminating the need for manual intervention and ensuring continuous operation.
Solution Approach 2:
The system performs self-diagnosis and self-correction by automatically detecting constraint conditions through the sensing unit and resolving them through automated rotation control. This eliminates the need for external maintenance personnel and keeps the system running continuously without manual intervention.
2Ease of operation
If manual maintenance is required to remove foreign objects, then the ease of operation is maintained, but the productivity and continuous operation are degraded
Solution Approach 1:
The system automatically detects and resolves constraint conditions caused by foreign objects without requiring manual intervention. The sensing unit identifies abnormal rotation states, and the controller automatically activates the driving source to rotate the filter, removing the need for users to stop the device for maintenance.
Solution Approach 2:
The automated detection and resolution system ensures that the humidification filter continues to rotate and perform its function without interruption. By eliminating the need for manual maintenance stops, the system maintains continuous productive operation while keeping the interface simple for users.
3Productivity
If the humidification filter rotates at high speed, then the productivity is improved, but the risk of foreign object obstruction and constraint increases
Solution Approach 1:
The sensing unit continuously monitors the rotation state of the humidification filter and provides feedback to the controller. When constraint or abnormal rotation is detected, the controller automatically adjusts the rotation speed or direction, allowing the system to operate at high speeds during normal conditions while automatically reducing speed or reversing when obstructions occur.
Solution Approach 2:
The system dynamically adjusts the rotation speed of the humidification filter based on real-time feedback from the sensing unit. During normal operation, the filter rotates at high speed for optimal humidification performance. When constraint conditions are detected, the controller automatically varies the speed or reverses direction to eliminate obstructions, then returns to high-speed operation.
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 effectively maintains the normal driving state of the humidification filter, enhancing air purifier performance by preventing obstruction and ensuring continuous operation.
Implementation Method 1
a magnet mounted on the rotational shaft to rotate together therewith; and a magnetic sensor installed in the water tank such that the magnetic sensor is adjacent to the magnet, and senses a magnetic field generated by the magnet
Data Source
AI summary
Disclosed is an air purifier able to maintain the normal state of drive of a disk-shaped humidification filter by controlling the state of rotation of the humidification filter. The air purifier can maintain the normal state of drive of the humidification filter by using a stepping motor and the control unit in order to vary the state of rotation of the humidification filter and thereby remove extraneous material when the humidification filter is rotating abnormally due to extraneous material.