Oblique Filter Screen Design for Improved Dust-Collecting Box Airflow
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Solution Overview
Problem
Existing dust-collecting boxes in cleaning devices have limited space for filter screens, resulting in inadequate air flow and low dust collection efficiency due to small air flow passage and restricted air circulation.
Innovation Solution
The dust-collecting box design includes a filter screen arranged obliquely relative to the exhaust passage, increasing the filter screen area and improving airflow smoothness, which enhances dust collection efficiency by allowing a larger filter screen to be used, thereby improving air circulation and collection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the filter screen area is increased, then the air flow and dust collection efficiency are improved, but the device complexity and space requirements increase
Solution Approach 1:
The filter screen is arranged obliquely relative to the exhaust passage instead of parallel or perpendicular, utilizing three-dimensional space more effectively. This oblique arrangement allows the filter screen to extend in multiple directions, increasing the effective filtering area without proportionally increasing the overall device volume, thus improving dust collection efficiency while controlling device complexity
Solution Approach 2:
The filter screen is positioned within the exhaust passage structure, with the exhaust passage air inlet end extending into the dust receiving cavity. This nested arrangement allows the filter screen to be integrated into the existing exhaust passage geometry, maximizing the use of available space and improving air flow through the filter without requiring additional external space or significantly increasing device complexity
2Productivity
If the filter screen area is increased, then the air circulation is improved, but the volume of the dust-collecting box increases
Solution Approach 1:
By arranging the filter screen obliquely rather than in a standard orthogonal configuration, the design utilizes unused diagonal spaces within the dust-collecting box. This allows the filter screen area to be increased without proportionally increasing the box volume, as the oblique arrangement fits more efficiently within the existing three-dimensional space
Solution Approach 2:
The filter screen is positioned specifically within the exhaust passage structure, with its air inlet end extending into the dust receiving cavity. This localized placement optimizes the filter screen's position to maximize air circulation within the available space, improving airflow efficiency without requiring a larger overall box volume
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 oblique arrangement of the filter screen increases the effective area, leading to smoother airflow and improved dust collection efficiency within the dust-collecting box, addressing the limitations of existing designs by enhancing both airflow and garbage collection capacity.
Implementation Method 1
The filter screen is configured to filter an airflow entering the exhaust passage from the dust receiving cavity
Implementation Method 2
an air outlet end of the exhaust passage is configured to be in pneumatic communication with a fan assembly
Data Source
AI summary
A dust-collecting box includes a dust-collecting box body and a filter screen. The dust-collecting box body defines a dust inlet, a dust receiving cavity and an exhaust passage which are communicated in sequence, an air inlet end of the exhaust passage is in communication with the dust receiving cavity, and an air outlet end of the exhaust passage is in pneumatic communication with a fan assembly. The filter screen is arranged between the air inlet end and the air outlet end, the filter screen filters an airflow entering the exhaust passage from the dust receiving cavity, an exhaust direction of the air outlet end is defined as a preset reference direction, and the filter screen is arranged obliquely relative to the preset reference direction.