Vacuum Tank Suction Cleaning for Workpiece Cavity Debris Removal

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Solution Overview

Problem

Industrial suction systems have insufficient suction power to reliably remove impurities from the cavities of workpieces, particularly those with complex geometries or subjected to machining processes.

Innovation Solution

A cleaning device with a suction apparatus comprising a vacuum tank, evacuation device, ventilation line, and blocking device, which creates a high pressure difference to generate a large negative pressure, allowing ambient air to penetrate and entrain contaminating particles from the workpiece into the vacuum tank for separation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If conventional industrial suction systems are used, then the system structure is simple, but the suction power is insufficient to reliably remove impurities from workpiece cavities

Engineering Contradiction:
Improvesuction powerVSAvoidsystem complexity
Core Design Contradiction:
PowerVSDevice complexity

Solution Approach 1:

The vacuum tank is evacuated in advance before cleaning the workpiece, creating a pre-vacuum state. This preliminary action ensures that when the blocking device is opened, the pressure difference is already established, enabling immediate and effective suction of impurities from the workpiece cavities without requiring continuous high-power suction during the entire process.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The cleaning process uses periodic action by cycling between evacuation and ventilation phases. The blocking device is opened and closed periodically, allowing the vacuum tank to be evacuated, then ventilated to ambient pressure, then evacuated again. This periodic operation creates repeated pressure differentials that continuously drive air and impurities through the workpiece cavities, maintaining effective cleaning over time.

Inventive Principle:
Principle #19Periodic action

2Stress or pressure

If the vacuum tank is evacuated to create high pressure difference, then the suction effect is enhanced, but the system requires more complex control mechanisms

Engineering Contradiction:
Improvepressure differenceVSAvoidcontrol mechanism complexity
Core Design Contradiction:
Stress or pressureVSDevice complexity

Solution Approach 1:

The blocking device serves as an intermediary element that controls the connection between the vacuum tank and the workpiece. By opening and closing this blocking device, the system creates and controls the pressure difference without requiring complex continuous control mechanisms. The blocking device acts as a simple on/off switch that enables the vacuum tank to be isolated from the workpiece during evacuation, then connected during ventilation, thereby managing pressure differences through a straightforward mechanical intermediary rather than complex active control.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If conventional suction systems are used, then the device structure is simple, but impurities remain in dead areas of complex geometries

Engineering Contradiction:
Improvecleaning effectivenessVSAvoidsystem structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system uses pneumatic principles by creating pressure differentials through vacuum evacuation and subsequent ventilation. This pneumatic action drives air flow through the complex geometries of the workpiece cavities, using pressure gradients rather than mechanical contact to reach into dead areas and narrow channels. The rapid pressure changes during ventilation phases create strong airflow that penetrates complex geometries more effectively than conventional continuous suction, reliably removing impurities from hard-to-reach areas without requiring complex mechanical cleaning structures.

Inventive Principle:
Principle #29Pneumatics and hydraulics

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 device achieves a significantly higher suction power, effectively removing processing residues and metal chips from complex geometries, such as cylinder heads and crank cases, with the ability to produce a powerful air stream for reliable particle removal without leaving particles in dead areas.

Implementation Method 1

at least one evacuation device for evacuating the vacuum tank

Methodology Applied
Scientific EffectVacuum: Vacuum

Implementation Method 2

there is a very high difference of pressure between the interior of the vacuum tank and the interior of the workpiece so that a large negative pressure is produced in each of the cavities in the workpiece

Methodology Applied
Scientific EffectPressure difference: Pressure Gradient

Implementation Method 3

the ambient air to penetrate at high speed into each of the openings which lead to the cavities in the workpiece that are connected to the ventilation line so that the contaminating particles which are located therein are whirled up and entrained towards the ventilation line

Methodology Applied
Scientific EffectAir entrainment: Entrainment

Implementation Method 4

a suction apparatus for sucking out impurities from an interior of the workpiece

Methodology Applied
Scientific EffectSuction: Suction

Data Source

PatentUS20090173227A1Cleaning Device and Method for Cleaning a Workpiece
Publication Date: 2009.07.09 DUERR ECOCLEAN GMBH
  • US20090173227A1 patent drawing
  • US20090173227A1 patent drawing
  • US20090173227A1 patent drawing

AI summary

In order to produce a cleaning device for cleaning a workpiece comprising a suction apparatus for sucking out impurities from an interior of the work piece wherein the suction apparatus has a particularly large suction effect, it is proposed that the suction apparatus at least one vacuum tank, at least one evacuation device for evacuating the vacuum tank, at least one ventilation line for connecting the vacuum tank to the workpiece and at least one blocking device for blocking off the connection between the vacuum tank and the workpiece.