Helical Bypass Element in Cyclonic Separation Unit to Reduce Clogging
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Solution Overview
Problem
Existing suction devices, particularly handheld vacuum cleaners, face challenges in maintaining high suction power during prolonged use due to the inefficiencies in the flow direction of the suction air flow within the separation unit, leading to potential clogging and reduced performance.
Innovation Solution
The separation unit is designed with a cylindrical collecting container and a flexible flap mechanism that guides the suction air flow in a cyclone-like manner, utilizing a flap with restricted and unrestricted deflection areas to create a helical flow, enhanced by a diversion element with an inclined surface, to efficiently separate and expel dirt particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the suction air flow is introduced into the separation unit in a conventional manner, then the structure is simple, but the suction power decreases during prolonged use due to inefficient flow direction and clogging
Solution Approach 1:
The patent employs a helical bypass element with a curved, spiral geometry that guides the suction air flow in a cyclone-like manner around the filter unit. This curved path maintains higher suction power by preventing direct impingement on the filter and reducing clogging, while the helical shape efficiently directs airflow to facilitate dirt particle separation and movement toward the collection container outlet.
Solution Approach 2:
The separation unit is divided into distinct functional zones: a filter unit for particle retention, a collection container for accumulating dirt, and a helical bypass element for airflow guidance. The bypass element creates separate flow paths that allow clean air to circulate while directing contaminated air toward the collection area, improving overall separation efficiency and maintaining consistent suction performance.
2Productivity
If a cyclone-like flow is created around the filter unit, then dust separation efficiency is improved, but the flow direction control becomes more complex
Solution Approach 1:
The helical bypass element uses a spiral, curved geometry to automatically generate cyclone-like rotational flow as air passes through it. This passive flow control mechanism creates the desired cyclonic motion without requiring active control systems, complex valves, or multiple directional guides, thereby maintaining high dust separation efficiency while keeping the device structure relatively simple.
3Ease of manufacture
If the collecting container is designed with a cylindrical shape, then manufacturing is simplified, but the flow dynamics and separation efficiency are limited
Solution Approach 1:
The collecting container is segmented into distinct functional regions: an upper region where the helical bypass element creates cyclonic flow for separation, and a lower region for accumulating collected dirt particles. The cylindrical container receives the helical element and bypass flow path that directs separated particles toward the outlet, combining simple cylindrical manufacturing with enhanced separation dynamics through the integrated helical component.
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
This design significantly enhances suction power and dust separation efficiency by maintaining a stable helical air flow, reducing clogging, and ensuring consistent performance even after prolonged use.
Implementation Method 1
the suction air flow is introduced into the separation unit and/or guided within the separation unit in such a way that the suction air flow flows in a cyclone-like manner around the central filter unit of the separation unit
Implementation Method 2
the suction air flow flows in a cyclone-like manner around the central filter unit
Implementation Method 3
The separation unit can have a longitudinal axis, and the housing wall of the collecting container can be (circularly) cylindrical around the longitudinal axis
Data Source
Figure 1
Figure 2a~2b
Figure 2c~3a
AI summary
A separation unit (113) for a suction device (100) is described, wherein the separation unit (113) comprises a collecting container enclosed by a housing wall (227), which extends along a longitudinal axis (220), and which has an inlet opening (211) arranged on the housing wall (227) for a suction air flow (212). The separation unit (113) is designed such that a suction air flow (212) entering the collecting container through the inlet opening (211) has a flow direction running in the circumferential direction with respect to the longitudinal axis (220).The separation unit (113) comprises an annular diversion element (240) having a surface (503) acting on the suction air flow (212) entering the collection container, wherein the surface (503) of the diversion element (240) extends helically along the inside of the housing wall (227) around the longitudinal axis (220) at least in a partial section, such that the surface (503) of the diversion element (240) has a step (500) with a first edge (501) and a second edge (502) that are spaced apart from one another along the longitudinal axis (220); wherein the step (500) of the surface (503) extends obliquely to the longitudinal axis (220).