Cyclone Dust Collector Layout for Fine Dust Separation in Power Tools
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Solution Overview
Problem
Conventional dust collection devices for power tools, such as sanders and grinders, are ineffective in capturing fine dust due to the dust passing through the gauze structure, leading to unsatisfactory collection efficiency and air contamination.
Innovation Solution
A dust collection device with a cyclone pipe and air guiding portion that utilizes a perpendicular airflow direction and a detachable housing design, featuring a cyclone pipe with a specific diameter ratio and shape, and an air inlet pipe connected to the tool, enhancing dust separation and collection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional gauze structure is used for dust collection, then the device structure is simple, but fine dust passes through the meshes leading to unsatisfactory collection efficiency
Solution Approach 1:
The patent replaces the conventional mechanical filtration system (gauze structure) with a cyclone separation system that uses centrifugal force generated by rotating airflow. The cyclone pipe creates a vortex that separates dust particles from air through centrifugal action, eliminating the need for mesh filters while significantly improving fine dust collection efficiency.
Solution Approach 2:
The invention utilizes pneumatic principles by creating a controlled airflow pattern through the cyclone pipe. The air inlet directs airflow tangentially into the cyclone chamber, generating a rotating air stream that uses centrifugal force and pressure differentials to separate and collect dust particles, replacing solid mechanical filtration with fluid dynamic separation.
2Manufacturing precision
If a cyclone pipe with specific diameter ratio is used, then dust separation efficiency is improved, but the device complexity increases
Solution Approach 1:
The patent optimizes the cyclone pipe performance by carefully selecting and controlling geometric parameters, specifically setting the diameter ratio (D/d) between 0.4 and 0.7 where D is the cyclone pipe diameter and d is the air inlet pipe diameter. This parameter optimization achieves high dust separation efficiency while maintaining manufacturability and avoiding excessive structural complexity.
3Ease of operation
If the housing is made detachable, then dust disposal becomes easy, but the connection reliability may be reduced
Solution Approach 1:
The housing is divided into a first housing portion and a second housing portion that can be detachably connected. This segmentation allows the dust collection chamber to be easily accessed for dust disposal while maintaining a reliable sealed connection during operation through properly designed coupling interfaces between the two portions.
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 device achieves high dust collection efficiency and superior dust separation, reducing airflow loss and facilitating easy dust disposal through a detachable design, improving the overall dust management in power tool operations.
Implementation Method 1
a cyclone pipe (222) configured to generate a cyclone so as to separate dust from the airflow
Implementation Method 2
the cyclone pipe (222) configured to generate a cyclone so as to separate dust from the airflow
Data Source
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AI summary
Disclosed is a dust collection device and a power tool. The dust collection device includes a housing, an air inlet pipe, a cyclone pipe, an air duct pipe, and a ventilation pipe. The housing defines an accommodating chamber for collecting a dust. The air inlet pipe is configured to guide an airflow to enter the dust collection device along a first straight line. The cyclone pipe extends along the second straight line. The cyclone pipe has a first end for air intake and a second end for dust discharge along the second straight line. The air duct pipe is provided with an air duct communicating the air inlet pipe with the cyclone pipe. The ventilation pipe is arranged at the first end of the cyclone pipe and communicated with the cyclone pipe, and is configured to guide the airflow after being subjected to dust separation performed by the cyclone pipe out of the housing. The housing further defines an air outlet communicated with the ventilation pipe or through which the ventilation pipe extends out of the housing. The second straight line along which the cyclone pipe extends intersects the first straight line to form an angle greater than or equal to 25° and less than or equal to 90°. The dust collecting device has a high dust collecting efficiency and superior dust separation effect.