Portable Wet Vacuum Cleaner Component Layout for Tilt-Safe Operation

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional wet vacuum cleaners are not designed for portable, mobile use with tilting, as they risk exposing sensitive components to liquids and sludge, limiting their mobility and usability in construction sites where tilting is common.

Innovation Solution

A portable wet vacuum cleaner with a collecting container featuring a sloping sealing plane and filter unit that can tilt within a 20-60 degree range, along with a gyrosensor to detect and prevent unauthorized tilting, ensuring components remain dry and functional.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If wet vacuum cleaners are designed for mobile use with tilting capability, then mobility and ease of operation are improved, but components may come into contact with liquids and sludge causing damage and malfunctioning

Engineering Contradiction:
ImprovemobilityVSAvoidcomponent protection
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The vacuum cleaner is divided into a lower collecting container for liquids/sludge and an upper protected region containing sensitive components (motor, turbine, filter). This spatial segmentation allows the device to tilt without components contacting contaminants, as the liquid level remains confined to the lower portion.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces a vertical dimension to component arrangement, placing protected components above the liquid surface in the vertical axis. This dimensional separation ensures that even when tilted, gravity keeps liquids in the lower region while components remain in the upper dry region.

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

2Reliability

If conventional wet vacuum cleaners are used in upright position only, then components remain protected from liquids, but mobility and adaptability to different work situations are limited

Engineering Contradiction:
Improvecomponent protectionVSAvoidmobility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The vacuum cleaner transitions from a static upright-only design to a dynamic tilting capability. The device can now adapt its orientation to different work situations (reaching under objects, working in confined spaces) while the liquid level dynamically adjusts but remains confined to the lower collecting container.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The vacuum cleaner becomes universally applicable to various work situations by enabling tilting in multiple directions. Users can now employ the device in positions previously impossible, such as leaning forward to clean under obstacles or working at angles, while component protection is maintained through the vertical separation design.

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

3Productivity

If the collecting container is filled to increase productivity, then more sludge can be collected, but the risk of liquid contacting protected components increases

Engineering Contradiction:
Improvecollection capacityVSAvoidcomponent protection
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The design utilizes the vertical dimension within the collecting container, allowing liquid to be filled to a higher level while maintaining a protective air gap above the liquid surface. Components are positioned in this upper vertical region, enabling greater collection capacity without increasing contamination risk.

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

4Ease of operation

If backpack-style portable design is implemented, then mobility is significantly improved, but the risk of tilting exposing components to liquid increases

Engineering Contradiction:
ImproveportabilityVSAvoidcomponent protection
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The backpack vacuum cleaner separates the collecting container into a lower liquid zone and an upper protected zone containing components. This segmentation allows the device to be worn on the back and tilted in various directions while gravity ensures liquid remains in the lower portion, preventing contact with components in the upper region.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The backpack design embraces dynamic tilting movements inherent to portable use. The vertical component arrangement adapts to these movements, maintaining component protection regardless of the user's posture or the device's orientation during operation.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12161282B2Wet vacuum cleaner and arrangement of components in such a wet vacuum cleaner
Publication Date: 2024.12.10 HILTI AG
  • US12161282B2 patent drawing
  • US12161282B2 patent drawing

AI summary

An arrangement of components in a portable wet vacuum cleaner, wherein the wet vacuum cleaner includes a container for collecting a liquid-dirt mixture. The component arrangement is characterized, in particular, by a sloping sealing plane as the upper termination of a collecting container of the wet vacuum cleaner, wherein the sloping sealing plane includes a filter unit. In a second aspect, the invention furthermore relates to a wet vacuum cleaner having a component arrangement of this kind.