Disk Humidification Filter Control for Foreign Object Jamming
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Solution Overview
Problem
Air purifiers with disk-type humidification filters often experience abnormal rotation due to foreign objects caught between the filters and the water tank, leading to degraded humidification performance and requiring manual maintenance to resolve.
Innovation Solution
An air purifier system with a sensing unit and controller that uses a stepping motor to adjust the rotational speed and direction of the humidification filters, allowing for automatic detection and removal of foreign objects by changing the torque and direction of rotation to maintain normal operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sensing unit and controller are added to detect and automatically adjust the rotational state of the humidification filter, then the reliability and ease of operation are improved, but the device complexity increases
Solution Approach 1:
A sensing unit detects the rotational state of the humidification filter and provides feedback signals to a controller. The controller automatically adjusts the driving source based on this feedback to maintain normal rotation, eliminating the need for manual intervention and improving reliability without requiring complex user operations.
Solution Approach 2:
The system performs self-diagnosis and self-correction by automatically detecting abnormal rotation states and adjusting the driving source accordingly. This self-service capability maintains reliable operation while keeping the control system relatively simple through automated routines.
2Ease of operation
If the driving source adjusts rotational speed and direction to remove foreign objects, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The driving source dynamically adjusts its rotational speed and direction based on real-time feedback from the sensing unit. This dynamic control enables automatic removal of foreign objects by varying torque and rotation direction, improving ease of operation while managing complexity through adaptive control rather than fixed mechanisms.
Solution Approach 2:
The controller changes operational parameters (rotational speed, rotation direction, torque) of the driving source to optimize performance for different operating conditions. These parameter adjustments enable automatic foreign object removal without requiring complex mechanical structures, as the same motor can adapt through electrical control.
3Device complexity
If manual maintenance is required to remove foreign objects, then the device complexity is reduced, but the productivity and reliability deteriorate
Solution Approach 1:
The sensing unit continuously monitors the rotational state and provides feedback to the controller, enabling automatic detection of foreign object interference. This feedback mechanism allows the system to self-correct by adjusting the driving source, maintaining productivity and operational continuity without manual intervention.
Solution Approach 2:
The system automatically detects and responds to foreign object interference by adjusting the driving source's rotational parameters. This self-service capability eliminates the need for manual maintenance, ensuring continuous operation and maintaining high productivity while keeping the overall system structure relatively simple.
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 ensures the humidification filters operate normally, enhancing air purifier performance by automatically addressing foreign object interference and preventing maintenance interruptions.
Implementation Method 1
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
Implementation Method 2
The driving source may be configured as a stepping motor for changing a rotational speed or a rotational direction to change torque generated when the humidification filter rotates
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.