Suction device

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Solution Overview

Problem

Existing suction devices face challenges in adapting to different particle sizes and maintaining high filtration efficiency over their service life, as they lack flexible filter options and efficient air flow management.

Innovation Solution

The suction device incorporates a cyclone chamber with a replaceable filter element and a first air duct with a tapered cross-sectional area, optimizing air flow and filtration efficiency by guiding air tangentially through a circular path, increasing centrifugal separation and filtration efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed filter element is used in the suction device, then the device structure is simple, but the device cannot adapt to different particle sizes and maintains filtration efficiency only for specific applications

Engineering Contradiction:
Improveadaptability to different particle sizesVSAvoiddevice structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The filter element is segmented into multiple detachable individual filters with different pore sizes. Each filter can be independently removed and replaced based on the specific particle size requirements, allowing the device to adapt to different applications without redesigning the entire filtration system.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The filtration system is made dynamic by allowing the filter element to be exchanged during operation. The detachable connection enables users to switch between different filter configurations based on real-time requirements, transforming a static system into an adaptable one.

Inventive Principle:
Principle #15Dynamics

2Reliability

If the filter element is permanently connected to the housing, then the device structure is simple, but the filter performance deteriorates over time due to damage or clogging

Engineering Contradiction:
Improvefiltration efficiency over service lifeVSAvoidfilter connection structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The filter element is designed to be detachable and replaceable. When a filter becomes damaged or clogged, it can be removed and replaced with a fresh filter, recovering the filtration performance without discarding the entire device. This extends the service life and maintains reliability.

Inventive Principle:
Principle #34Discarding and recovering

Solution Approach 2:

The filter system is segmented into individual replaceable filters rather than a single permanent filter. This allows selective replacement of only the filter component that has degraded, maintaining high filtration efficiency throughout the device's service life.

Inventive Principle:
Principle #1Segmentation

3Productivity

If the air duct has a constant cross-sectional area, then the device structure is simple, but the air flow properties are not optimized for centrifugal separation

Engineering Contradiction:
Improvecentrifugal separation efficiencyVSAvoidair duct geometry
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The air duct cross-sectional area is varied along its length rather than remaining constant. The cross-section is enlarged in the centrifugal separation area to optimize air flow properties, increasing the effectiveness of particle separation while maintaining a relatively simple overall duct structure.

Inventive Principle:
Principle #35Parameter changes

4Adaptability or versatility

If a single filter element is used, then the device structure is simple, but the device cannot be adapted to different areas of application with varying particle sizes

Engineering Contradiction:
Improveadaptability to different areas of applicationVSAvoidfilter system structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The single filter element is segmented into multiple individual filters with different pore sizes that can be independently selected and combined. This segmentation enables the device to adapt to different application areas by choosing the appropriate filter combination for the specific particle size requirements.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The filter system is designed with universal adaptability, where a set of standard filters with different pore sizes can be used across various application scenarios. The detachable connection system provides a universal interface that accommodates different filter types for different purposes.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 enhances the suction device's adaptability to various particle sizes, maintains high filtration performance throughout its service life, and optimizes air flow properties for improved suction power and filtration efficiency.

Implementation Method 1

a cyclone chamber (24), in particular which is axially separated from the housing (12) and radially limited at least in sections by the collection container (14) and the filter element (16), and in which material and/or fluid particles are separated from an air flow (48) by a centrifugal force separation mechanism

Methodology Applied
Scientific EffectCentrifugal force separation: Centrifugal Separation

Implementation Method 2

The filter element is advantageously designed to filter material and/or fluid particles as they exit the cyclone chamber

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Data Source

PatentEP3338611B1Suction device
Publication Date: 2022.08.24 ROBERT BOSCH GMBH
  • EP3338611B1 patent drawingFigure 1
  • EP3338611B1 patent drawingFigure 2
  • EP3338611B1 patent drawingFigure 3

AI summary

The present invention relates to a suction device for collecting and separating material particles and/or liquids from an air flow, having a housing in which an electric motor for generating the air flow is arranged, the housing having an air inlet through which the air flow can enter the suction device. has, and an air outlet through which the air flow can leave the suction device, with a battery interface for receiving a battery, with at least one cyclone chamber, and with a collection container, which is designed to collect the material particles and/or the liquids, wherein the Collection container is detachably connected to the housing of the suction device. In addition, it is proposed that the cyclone chamber has a filter element, the filter element being detachably connected to the housing of the suction device.