High-pressure-cleaning system

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Solution Overview

Problem

Users of high-pressure cleaning systems often operate the devices with non-optimally adapted delivery parameters due to the lack of available operating instructions, leading to suboptimal cleaning results.

Innovation Solution

A high-pressure cleaning system equipped with a detection unit that automatically adjusts at least one delivery parameter, such as pressure and chemical dosage, based on the type of discharge unit in use, through a control device connected to a spray gun with a manually operable valve and a detection unit for contact or non-contact identification of the discharge unit.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the user manually adjusts delivery parameters based on operating manual, then optimal cleaning parameters can be achieved, but the process is time-consuming and requires manual intervention

Engineering Contradiction:
Improvecleaning parameter optimizationVSAvoidtime to adjust parameters
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The system automatically detects the discharge unit type and self-adjusts delivery parameters without user intervention. The control device reads identification data from the discharge unit and autonomously selects optimal cleaning parameters, making the system serve itself rather than requiring manual configuration.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical adjustment with automatic electronic control. Instead of users physically adjusting parameters based on manual lookup, the system uses electronic identification and automated control to select and apply optimal parameters.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Loss of information

If the operating manual is always available, then optimal delivery parameters can be found, but the manual is often not available at the specific location

Engineering Contradiction:
Improveaccess to optimal parametersVSAvoidavailability of operating instructions
Core Design Contradiction:
Loss of informationVSEase of operation

Solution Approach 1:

The discharge unit's identification element acts as an intermediary that carries essential information directly to the control device. Instead of requiring external manuals, the identification data embedded in or on the discharge unit serves as a self-contained information source that the control system can read and process.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The optimal delivery parameters are predetermined and stored in association with each discharge unit type before operation. The identification element contains or links to this pre-configured information, so no manual lookup or real-time decision-making is needed during operation.

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If the user operates without optimal parameters, then operation is simple, but cleaning results are poor

Engineering Contradiction:
Improvesimplicity of operationVSAvoidcleaning result quality
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The system automatically detects the discharge unit type and self-adjusts delivery parameters without user intervention. The control device reads identification data from the discharge unit and autonomously selects optimal cleaning parameters, making the system serve itself rather than requiring manual configuration.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP3297764B2High-pressure-cleaning system
Publication Date: 2024.08.21 ALFRED KARCHER SE & CO KG
  • EP3297764B2 patent drawingFigure 1
  • EP3297764B2 patent drawingFigure 2~3
  • EP3297764B2 patent drawingFigure 4

AI summary

The invention relates to a high-pressure-cleaning system (10) having a high-pressure-cleaning appliance (12), which has a pump (34) and a motor (32) and also a pump inlet (36) and a pump outlet (38) and a control device (46), and having at least one dispensing unit (16, 18, 20, 22, 24, 26), which can be brought into fluid connection with the pump outlet (38) in order to dispense pressurized cleaning fluid. In order to develop the high-pressure-cleaning system such that it is easier to achieve the best possible cleaning result, it is proposed that the high-pressure-cleaning system (10) should have a sensing unit (104), by means of which it is possible to sense the type of dispensing unit (16, 18, 20, 22, 24, 26) currently in fluid connection with the pump outlet (38) and which is in signal-transmitting connection with the control device (46), wherein at least one delivery parameter of the high-pressure-cleaning appliance (12) can be adapted automatically by the control device (46) to the type of dispensing unit (16, 18, 20, 22, 24, 26) sensed. The invention also proposes a dispensing unit for such a high-pressure-cleaning system.