Dust Collector Mechanical Filter Cleaning to Reduce Control Complexity
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Solution Overview
Problem
Existing dust collectors require complex electrical control systems to clean filters during operation, complicating the structure and increasing costs.
Innovation Solution
A dust collector design featuring a pair of intake paths with first and second opening and closing members, operated by a motor and cam mechanism, allows for filter cleaning without electrical control, using discharged air to reverse flow and remove dust from filters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If electromagnetic valves are used to open and close air inlet pipes for filter cleaning, then filter cleaning during operation is achieved, but the device complexity increases due to required electrical control systems
Solution Approach 1:
The patent replaces the electromagnetic valve-based mechanical control system with a purely mechanical cam mechanism. The cam, driven by a motor, directly actuates the opening and closing members through mechanical contact, eliminating the need for electromagnetic valves and their associated electrical control circuits while maintaining the filter cleaning function.
Solution Approach 2:
The patent extracts and removes the electromagnetic valve component from the system. By taking out the electromagnetic valve and its electrical control system, the invention simplifies the overall device structure while preserving the essential filter cleaning capability through the alternative mechanical cam-based actuation mechanism.
2Productivity
If a pair of intake paths with opening and closing members are used for filter cleaning, then filter cleaning is achieved during operation, but the structure becomes more complex
Solution Approach 1:
The patent merges the functions of multiple components into integrated elements. The cam mechanism simultaneously controls both opening and closing members through its rotational motion, and the air passage serves dual purposes by allowing both normal air intake and reverse flow for filter cleaning, reducing the number of separate components needed.
Solution Approach 2:
The air passage is designed with multi-functionality, serving both as a normal intake path during operation and as a cleaning path during filter maintenance. The same structural elements (intake paths, opening/closing members) are used for both dust collection and filter cleaning operations, eliminating the need for separate dedicated cleaning 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
Simplifies the structure, reduces manufacturing costs, and ensures effective filter cleaning during operation while minimizing the need for electrical control, with antistatic treatment preventing electrostatic attraction of dust.
Implementation Method 1
a filter that separates the suction port from the main body in an intake path extending from the suction port to the electric blower and that is capable of catching dust in the air
Implementation Method 2
discharged air in the discharge passage is guided to one of the intake paths via the communication path, the discharged air is caused to flow backward in the intake path and returned to the tank through the filter, and is guided to the other intake path, so that the dust on the filter of the one intake path is removed
Data Source
Figure 1
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Figure 3
AI summary
A dust collector (1) having a filter (20,22,23) for catching dust from air flowing through an intake path is provided. A pair of the intake paths are formed so as to be combined on an upstream side of an electric blower (31) provided in a main body (4). A pair of communication paths (50, 51) allow a discharge passage (44) to communicate with each of the intake paths. A first opening and closing member (55, 55') is provided so as to open and close each intake path, and in a normal state, is biased to open the intake path. A second opening and closing member (61, 61') is provided so as to open and close each communication path (50, 51), and in the normal state, is biased to close the communication path (50, 51), and opens the communication path (50, 51) in response to a closing operation of the intake path by the first opening and closing member (55, 55').