Modular Ash Vacuum Filtration for Dust and Ignition Control

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Solution Overview

Problem

Existing suction devices for ash are not designed for safe and clean handling, as they often integrate the filter with the suction head unit, risking dust dispersal and ignition hazards when handling glowing particles.

Innovation Solution

A modular suction device with a metallic suction material container, a detachable filter unit, and a suction head unit, where the filter is supported on a cover with a mesh device for fire protection, allowing easy separation and cleaning without tools, and a metal suction hose for enhanced fire safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the filter unit is integrated into the suction head unit, then the device structure is simplified, but dust can disperse onto surfaces when the suction head is set down

Engineering Contradiction:
Improvedevice structureVSAvoiddust dispersal
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The device is divided into separate functional modules: the suction head unit (16) and the filter unit (14) are detached from each other. The suction head unit contains the motor device and suction channel, while the filter unit contains the filter (64) and flow space (66). This segmentation allows the suction head to be removed without the filter, preventing dust dispersal onto surfaces while maintaining a manageable device structure.

Inventive Principle:
Principle #1Segmentation

2Device complexity

If the filter unit is integrated into the suction head unit, then the number of components is reduced, but the suction head becomes dirty and requires cleaning

Engineering Contradiction:
Improvenumber of componentsVSAvoidcleaning requirement
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

By separating the filter unit from the suction head unit, the suction head unit can be removed and set down on surfaces without containing dust or suction material. The filter unit remains contained within the suction material container unit, keeping the suction head clean and eliminating the need to clean the suction head after use.

Inventive Principle:
Principle #1Segmentation

3Ease of manufacture

If non-metallic materials are used in the suction material container, then manufacturing cost is reduced, but ignition risk increases when glowing particles are vacuumed

Engineering Contradiction:
Improvemanufacturing costVSAvoidignition risk
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The suction material container unit features a metallic wall (20) specifically in the region where suction material is stored and processed. This localized use of metallic material provides fire protection where glowing particles may be present, while other parts of the device can use non-metallic materials to control manufacturing costs.

Inventive Principle:
Principle #3Local quality

4Ease of operation

If the suction material space is left open for easy access, then loading and emptying is simplified, but fire protection is compromised

Engineering Contradiction:
Improveloading and emptyingVSAvoidfire protection
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The filter unit is designed to be detachably supported on the suction material container unit, allowing it to be easily removed for emptying the suction material space. The metallic wall and cover provide fire protection when the device is in use, while the detachable filter unit enables easy access for maintenance without compromising safety during operation.

Inventive Principle:
Principle #2Taking out (Extraction)

5Ease of repair

If the filter is permanently fixed in the filter holder, then filter replacement is complex, but filter stability is improved

Engineering Contradiction:
Improvefilter replacementVSAvoidfilter stability
Core Design Contradiction:
Ease of repairVSStability of the object's composition

Solution Approach 1:

The filter (64) is arranged in the flow space (66) with the ability to be detached from the filter holder (62). This dynamic design allows the filter to be securely held during operation for stability, while enabling easy removal and replacement when needed for maintenance or cleaning, balancing both filter stability and ease of repair.

Inventive Principle:
Principle #15Dynamics

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 modular design ensures safe and clean handling by preventing dust dispersal and minimizing ignition risks, with the metallic components providing high fire protection and easy maintenance of the filter and suction head unit.

Implementation Method 1

the suction material space is arranged or formed within a metallic wall and that the suction head unit is detachably fixed to the suction material container unit via a locking device, the suction head unit being able to be locked to the suction material container unit. The suction device according to the invention has the suction material container unit, the filter unit and the suction head unit as separate modules. To empty the suction material space, the suction head unit can be detached and in particular can be detached without the use of tools. The filter unit is separate from the suction head unit. This means that no suction material sticks to the suction head unit, and if it is placed on a shelf then it will not get dirty. If the filter unit were integrated into the suction head unit, ash dust could come loose when the suction head unit is set down and get from the filter unit onto the surface to be set down.

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Implementation Method 2

There is a high level of fire protection if the suction material space is assigned a cover which covers the suction material space towards the filter unit, with at least one opening being arranged on the cover for fluidly effective connection of the suction material space with the at least one filter. By covering the suction material space with an additional cover, parts above the cover can be protected, in particular with regard to ignition. The at least one opening provides the necessary fluidic connection so that a suction air flow can flow through the filter.

Methodology Applied
Scientific EffectSuction: Suction

Implementation Method 3

the filter unit is supported on the cover or is firmly connected to it. With a structurally simple structure, this gives a user the simple option of removing the filter unit from the suction material container unit or detaching the suction head unit from the filter unit, in particular without tools.

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Implementation Method 4

For reasons of fire protection, it is advantageous if a mesh device is arranged at the at least one opening. This can also act as a (pre-)filter. The mesh device is preferably formed from a lattice and/or woven fabric and/or knitted fabric or includes such a fabric and is in particular made from a flame-retardant material. For example, the mesh means is made of a metallic material. This results in a high level of fire protection.

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Data Source

PatentEP2736396B1Suction apparatus
Publication Date: 2016.09.07 ALFRED KARCHER SE & CO KG
  • EP2736396B1 patent drawingFigure 1
  • EP2736396B1 patent drawingFigure 2
  • EP2736396B1 patent drawingFigure 3

AI summary

A suction apparatus that is suitable for suctioning ashes is proposed, comprising a uniform suctioned material container unit (12, 94), in which a suctioned material space (18, 102) is arranged, a filter unit (14, 96, 142), supported detachably on the suctioned material container unit (12, 94), with a filter holder (62, 106, 144) and at least one filter (64, 112, 116, 146), and a suction head unit (16, 98), on which a motor device (70) is arranged and which is supported detachably on the filter unit and/or on the suctioned material container unit, the filter unit being detachable with respect to the suction head unit.