Acoustic Partition Chamber for Compact Low-Noise Cleaning Flow

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Solution Overview

Problem

Existing cleaning devices face challenges in effectively reducing noise levels while maintaining a compact design and efficient fluid conveyance, as they often require additional components or materials for sound suppression, which can complicate their construction and functionality.

Innovation Solution

Incorporating a partition wall within the chamber of the cleaning device that acts as an acoustic shield between the inlet and outlet devices, minimizing pressure loss and reflecting sound waves to reduce noise intensity, while also serving as a fluid conduit and potentially forming part of the device's housing for a compact and integrated design.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If additional noise suppression components or materials are added to cleaning devices, then sound reduction effectiveness is improved, but device complexity and constructional favorability deteriorate

Engineering Contradiction:
Improvenoise levelVSAvoidconstruction complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The partition wall is integrated into the existing chamber structure of the cleaning device, combining the acoustic shielding function with the housing structure. This merging eliminates the need for separate noise suppression components while achieving effective sound reduction between the inlet and outlet devices.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The partition wall serves multiple functions: it acts as an acoustic shield to reduce noise transmission, maintains the structural integrity of the chamber, and guides fluid flow between inlet and outlet devices. This multi-functionality reduces the need for additional dedicated noise suppression components.

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

2Object-affected harmful factors

If the chamber depth is increased to improve sound reduction, then acoustic shielding effectiveness is improved, but device volume and compactness deteriorate

Engineering Contradiction:
Improvesound intensityVSAvoidchamber volume
Core Design Contradiction:
Object-affected harmful factorsVSVolume of moving object

Solution Approach 1:

The partition wall is strategically positioned within the chamber to create localized acoustic shielding zones. By concentrating the acoustic shielding function at specific locations rather than increasing overall chamber depth, effective noise reduction is achieved while maintaining a compact device volume.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

Instead of increasing chamber depth in one dimension to achieve sound reduction, the partition wall introduces acoustic shielding in a different spatial arrangement within the existing chamber volume. This dimensional optimization allows effective noise reduction without proportionally increasing the overall device volume.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Object-affected harmful factors

If the partition wall is configured to reflect sound waves, then sound intensity reduction is improved, but fluid flow pressure loss may increase

Engineering Contradiction:
Improvesound intensityVSAvoidpressure loss
Core Design Contradiction:
Object-affected harmful factorsVSLoss of energy

Solution Approach 1:

The partition wall's geometric parameters (such as angle, surface area, and positioning) are optimized to achieve effective sound reflection while minimizing disruption to fluid flow. By carefully adjusting these parameters, the design balances acoustic shielding effectiveness with acceptable pressure loss characteristics.

Inventive Principle:
Principle #35Parameter changes

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 configuration achieves effective sound reduction with a minimized number of components, allowing the chamber to perform multiple functions, including fluid conveyance and silencing, while maintaining a compact design and enabling easy access to the device's interior.

Implementation Method 1

The at least one partition wall is, in particular, configured such that sound is reflected within the cavity. The sound is reflected here, in particular, on the wall and the at least one partition wall.

Methodology Applied
Scientific EffectSound reflection: Reflection

Implementation Method 2

at least one partition wall is arranged in the cavity, which partition produces an acoustic shielding effect between the inlet device and the outlet device

Methodology Applied
Scientific EffectAcoustic shielding: Acoustic Absorption

Data Source

PatentUS10154766B2Cleaning device
Publication Date: 2018.12.18 ALFRED KARCHER SE & CO KG
  • US10154766B2 patent drawing
  • US10154766B2 patent drawing
  • US10154766B2 patent drawing

AI summary

A cleaning device is proposed which includes a base, an air-conduit device which is arranged on the base, and at least one chamber with a wall which delimits a cavity, an inlet device for a fluid stream and an outlet device being arranged on the wall, and at least one fluid channel running in the cavity between the inlet device and the outlet device, wherein at least one partition wall is arranged in the cavity, said partition producing an acoustic shielding effect between the inlet device and the outlet device.