Dual-Filter Dust Suction with Alternating Self-Cleaning Airflow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Dust suction devices with two filters lack adjustable control for flow inversion, which is necessary to prevent excessive pressure losses due to filter clogging, and existing solutions do not allow continuous operation without interrupting suction.
Innovation Solution
A dust suction device with two filters, each equipped with separate valves for independent operation, allowing for adjustable control of flow inversion during suction and cleaning, utilizing a first valve between the inlet and depression chambers and a second valve between the outlet and inlet chambers, operated by a single or dual control system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single filter is used in dust suction devices, then the device structure is simple, but excessive pressure losses occur due to filter clogging
Solution Approach 1:
The single filter is segmented into two separate filters (first filter and second filter) that can operate independently. This allows one filter to be cleaned while the other continues suction operations, preventing pressure losses from clogging without requiring complex multi-filter systems
2Adaptability or versatility
If two filters with separate valves are used, then adjustable control for flow inversion is achieved, but device complexity increases
Solution Approach 1:
The valve systems for the two filters are merged into a unified valve mechanism that controls both filters simultaneously. The first valve controls the first filter and the second valve controls the second filter, but both are integrated into a single valve assembly that can be operated together, reducing overall device complexity while maintaining adjustable control capability
3Reliability
If filters are cleaned by interrupting suction operation, then filter cleaning is effective, but productivity decreases
Solution Approach 1:
The system enables continuous suction operation by implementing alternating filter cleaning. While the first filter is being cleaned (with the first valve closed), the second filter continues to perform suction (with the second valve open), and vice versa. This ensures uninterrupted useful action and maintains productivity while achieving effective filter cleaning
4Ease of operation
If flow inversion is not controlled, then device operation is simple, but pressure losses increase excessively
Solution Approach 1:
The valve system is designed to dynamically adjust the flow paths based on filter cleaning requirements. The first and second valves can automatically or manually switch between suction mode and cleaning mode, enabling the system to adapt to changing conditions while maintaining simple operation through automated control mechanisms
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
Enables continuous operation without interrupting suction, effectively preventing excessive pressure losses by allowing for alternate cleaning of filters, maintaining efficient airflow and extending the device's operational lifespan.
Implementation Method 1
a turbine (2), two filters (3, 4) arranged in parallel, an inlet chamber (5) shared by the two filters with air inlet (6) and in communication with a depression chamber (7) generated by the turbine
Data Source
AI summary
Described is a dust suction device, preferably for surface working tools, including a turbine, two filters, an inlet chamber containing the two filters provided with an air inlet and in communication with a depression chamber which is in turn in communication with the inlet to the turbine, and an outlet chamber in communication with the outlet from the turbine and with the inlet chamber and provided with an air outlet towards the outside environment. A first valve for each filter is interposed between the inlet chamber and the depression chamber, and a second valve for each filter is interposed between the outlet chamber and the inlet chamber and are operable so that an air flow from the inlet chamber may pass through each of the filters during a suction step and an air flow from the outlet chamber may pass through each of the filters during a filter cleaning step.