Suction apparatus and separating unit for a suction apparatus with a shielding ejection and/or compacting element
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Solution Overview
Problem
Existing suction apparatuses face challenges in maintaining reliable and convenient dirt compaction and ejection from the collecting container, particularly after prolonged use, leading to reduced suction power.
Innovation Solution
A separating unit with a collecting container surrounded by a housing wall, featuring a movable ejection and/or compacting element that adjusts its radial force and distance from the housing wall along a longitudinal axis, ensuring consistent suction power by preventing dirt from escaping during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the ejection and/or compacting element is moved inside the collecting container to compact dirt particles, then the suction power is improved, but the radial force of the ejection element on the housing wall increases which may cause friction and movement resistance
Solution Approach 1:
The ejection element is designed with dynamic radial adjustability, allowing it to change its radial position along the longitudinal axis. During the ejection phase, the element extends radially to apply compacting force on dirt particles. During the retraction phase, it reduces radial contact to minimize friction with the housing wall, enabling smooth movement and consistent suction power without excessive resistance
Solution Approach 2:
The system changes the radial position parameter of the ejection element along the longitudinal axis. By varying the radial distance between the ejection element and the housing wall at different positions, the design optimizes the balance between applying sufficient compacting force when needed and minimizing frictional resistance during movement, thus maintaining high suction power throughout the operation cycle
2Productivity
If the ejection element maintains constant radial contact with the housing wall for compacting, then compaction efficiency is improved, but the element's mobility along the longitudinal axis is reduced due to increased friction
Solution Approach 1:
The ejection element transitions from a static radial contact design to a dynamic one where the radial contact distance varies along the longitudinal axis. The element is configured to maintain closer radial contact in regions where compacting is most needed, while increasing the radial gap in regions where movement is required, thereby achieving both high compaction efficiency and smooth mobility along the longitudinal axis
3Productivity
If the ejection element is positioned close to the housing wall for effective compacting, then dirt compaction is improved, but dirt particles may escape between the element and housing wall during operation
Solution Approach 1:
The ejection element and housing wall are designed with position-dependent radial spacing. In the initial position along the longitudinal axis, the radial distance is minimized to ensure effective compacting of dirt particles against the housing wall. In the compacting position, the radial distance is increased to prevent dirt particles from escaping between the ejection element and housing wall during the compaction process, thus achieving both effective compaction and reliable dirt containment
Data Source
AI summary
A separating unit for a suction apparatus includes a collecting container for particles of dirt, which is surrounded by a housing wall. The collecting container extends along a longitudinal axis. The separating unit also includes an ejection and/or a compacting element which is configured to be moved inside the collecting container, starting from an initial position along the longitudinal axis to a compacting position in order to compact particles of dirt disposed in the collecting container and/or to eject them from the collecting container. The separating unit is configured in such a way that a radial force, with which the ejection and/or compacting element acts in the radial direction on the inside of the housing wall, is lower at the compacting position than at the initial position. A suction apparatus having the separating unit is also provided.