Filter Element Suction Chamber Design for Dust Control
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Solution Overview
Problem
Existing air scrubbers at construction sites are inefficient in removing dust due to suboptimal airflow speed, quick saturation of coarse filters, and easy re-release of collected dust, making filter changes messy and ineffective.
Innovation Solution
A filter element design with a suction chamber and strategically placed holes, where the filter material area is larger than the hole area, creating a low airflow path that captures dust within the chamber, reducing clogging and dust re-release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a typical air scrubber uses a coarse filter to remove dust, then the filter can handle large amounts of dust, but the filter quickly gets saturated causing airflow to decrease
Solution Approach 1:
The filter element is divided into two distinct sections: a coarse filter section for capturing large dust particles and a fine filter section for capturing smaller particles. This segmentation allows each filter type to perform its specialized function, preventing the fine filter from becoming quickly saturated by coarse dust while maintaining high airflow capacity.
Solution Approach 2:
Different parts of the filter element have different filtering properties - the coarse filter section uses larger pores optimized for high-volume dust capture, while the fine filter section uses smaller pores optimized for particle removal efficiency. This local quality differentiation resolves the contradiction between handling large dust quantities and maintaining airflow.
2Ease of operation
If the filter element is exposed on the face of the device, then dust can be easily accessed, but the slightest vibration or nudge easily dislocates dust causing it to fall on the floor or become floating
Solution Approach 1:
The filter element is nested within a housing structure that includes a removable cover. The cover can be opened to provide access to the filter for maintenance while keeping the filter protected and contained during normal operation. This nesting arrangement prevents dust from being dislodged by vibrations while allowing easy access when needed.
Solution Approach 2:
A removable cover acts as an intermediary between the external environment and the exposed filter surface. The cover protects the filter and collected dust from vibrations and disturbances during operation, while allowing controlled access when the cover is deliberately removed for maintenance purposes.
3Object-affected harmful factors
If a plastic bag is used to stop spreading of dust during filter changing, then dust spreading is reduced, but the structure becomes more complex and less efficient
Solution Approach 1:
The housing structure is merged with the filter element design, integrating the containment function directly into the filter assembly. The removable cover is part of the housing structure itself, eliminating the need for separate plastic bags or additional containment structures. This integration reduces overall system complexity while maintaining dust containment effectiveness.
4Productivity
If a suction chamber is added to the filter element, then dust collection efficiency is enhanced and clogging is reduced, but the device complexity increases
Solution Approach 1:
The suction chamber serves multiple functions simultaneously: it collects dust particles that pass through the filter, creates negative pressure to enhance particle capture efficiency, and reduces clogging by preventing dust buildup on the filter surface. This multi-functionality justifies the additional structural element by delivering multiple benefits from a single addition.
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 design enhances dust collection efficiency, reduces filter clogging, and allows for longer filter change intervals while maintaining cleanliness during filter changes and device movement.
Implementation Method 1
a space between the filter material and a first side of the housing for forming a suction chamber
Data Source
AI summary
The present disclosure is related to filter elements and more specifically to filter elements for removing dust from air. In an embodiment, an inventive filter element includes a housing having a first side and a second side, filter material in the housing, a space between the filter material and the first side of the housing for forming a suction chamber, and at least one hole in the first side, whereby the area within the circumference of the side of the filter material facing the first side of the housing is larger than the area of at least one hole.