Cyclonic Vacuum Dust Container Lid to Prevent Waste Recirculation
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Solution Overview
Problem
Bagless vacuum cleaners with cyclonic separation systems face issues of limited waste accumulation space, heavy and bulky transport, and risk of waste recirculation due to the integration of cyclonic separation and recovery systems, as well as spontaneous waste release during transport of the collection container.
Innovation Solution
A vacuum cleaner design featuring a removable waste recovery container with a movable lid forming a connecting conduit, where the inlet section is annular and coaxial with the cyclone axis, and the connecting duct's outer wall diverges between the inlet and outlet sections to prevent waste re-aspiration and escape, allowing for easy emptying and reducing recirculation risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the waste recovery container is made removable and separable from the primary separator, then the ease of transport and emptying is improved, but the risk of waste spillage during transport increases
Solution Approach 1:
A lid is introduced as an intermediary element between the waste recovery container and the environment. This lid can be closed during transport to prevent waste spillage, and opened at the emptying location to facilitate waste removal. The lid acts as a mediator that allows the container to be both secure during transport and easily emptied when needed.
2Reliability
If the inlet section of the connecting conduit is made annular and coaxial with the cyclone axis, then the risk of waste recirculation is reduced, but the complexity of the connecting conduit design increases
Solution Approach 1:
The inlet section of the connecting conduit is designed with an annular (ring-shaped) cross-section instead of a simple circular or rectangular shape. This asymmetric geometry, combined with coaxial alignment with the cyclone axis, creates a flow pattern that reduces the risk of waste recirculation by directing air flow in a specific manner that prevents waste particles from being drawn back into the cyclone.
3Reliability
If the outer wall of the connecting duct diverges between inlet and outlet sections, then waste recirculation is prevented, but the length of the connecting duct increases
Solution Approach 1:
The connecting duct is designed with a diverging outer wall that expands in the radial dimension as it extends from the inlet to the outlet section. This dimensional change allows the duct to prevent waste recirculation by creating a flow expansion that reduces turbulence and prevents waste particles from being drawn back, while managing the length increase through efficient spatial arrangement.
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 allows for safe transport of waste without spillage and reduces the risk of waste recirculation, enabling efficient waste collection and easy emptying by maintaining the lid in a closed position during transport and opening it for easy disposal.
Implementation Method 1
a primary cyclonic separation stage followed by a secondary cyclonic separation stage
Implementation Method 2
the separation between the expelled air and the particles sucked in is essentially carried out by means of a system of cyclones
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a vacuum cleaner including a waste separation assembly that includes: at least one cyclonic separation step (8) comprising a main separator (10) via a cyclone having a longitudinal axis ?; and a removable waste recovery container (20) located under the main separator (10). According to the invention, the removable waste recovery container (20) is combined with a movable cover (22) that defines a connection pipe (24) between the main separator (10) and the removable container (22), wherein the connection pipe (24) has, at the connection thereof to the main separator (10), a generally annular inlet section (34) coaxial to the axis ?.