Roller-Based Filter Module for Extended Air Purifier Service Life
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Solution Overview
Problem
Air purifiers require frequent maintenance and filter replacement due to the short service life of pre-filters, which collect large-sized foreign substances, leading to a need for a solution that extends the usage period without cleaning or replacing the filter.
Innovation Solution
An air purifier design featuring a filter module with a supply roller and a recovery roller, where the filter is wound on both rollers, allowing used sections to be recovered and unused sections to be supplied, with a drive device and latch mechanism to manage rotation and prevent reverse rotation, enabling the filter to be used for a longer period without replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pre-filter is used to collect large-sized foreign substances, then the filter effectively removes particles, but the service life becomes short requiring frequent cleaning or replacement
Solution Approach 1:
The filter is divided into multiple sections that can be independently used. When one section becomes saturated with foreign substances, the system switches to the next section, allowing the used section to be reset or replaced independently while others continue filtering, thereby extending the overall service life
Solution Approach 2:
The system recovers and resets used filter sections by reversing the airflow direction, which removes accumulated foreign substances from the filter media. This recovery process allows the same filter material to be reused multiple times, significantly extending service life while maintaining filtering effectiveness
2Reliability
If the filter is cleaned frequently to maintain performance, then the filter effectiveness is maintained, but the maintenance time and operational interruption increase
Solution Approach 1:
The system automatically switches between multiple filter sections in periodic cycles. While one section is being used, another section is being recovered or is available as backup. This periodic switching eliminates the need for frequent manual cleaning interruptions, as the system continuously operates with multiple sections in different states of use and recovery
Solution Approach 2:
The filter system performs self-maintenance by automatically switching between sections and recovering used sections without requiring manual intervention. The system monitors filter status and autonomously manages the switching and recovery processes, eliminating maintenance time loss
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
The air purifier can operate without filter replacement or cleaning for an extended time, as the used section of the filter is wound onto the recovery roller and the unused section is supplied from the supply roller, effectively managing foreign substance collection and extending the filter's service life.
Implementation Method 1
a supply roller and a recovery roller, and a filter on which both ends of the filter are wound and installed on the supply roller and the recovery roller
Implementation Method 2
a latch device disposed on at least one of the supply roller and the recovery roller to limit reverse rotation
Data Source
AI summary
A filter module and an air purifier according to an aspect of the present disclosure include a supply roller and a recovery roller, a filter wound and installed on the supply roller and the recovery roller, so that it can be used without replacing and cleaning the filter module for a long period of time by allowing a section used in the filter to be recovered in the recovery roller, and also a section not used in the filter to be supplied from the supply roller.