Spot cleaner apparatus

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Solution Overview

Problem

Existing portable spot cleaners face difficulties in filling, emptying, and transporting fluid, lack intuitive control over suction rate, fluid temperature, and flow rate, and often require high energy consumption for steam cleaning.

Innovation Solution

A spot cleaner apparatus with a clean fluid tank, dirty fluid tank, integrated liquid/air separator, pump assembly, and vacuum assembly, featuring a fluid heater that heats cleaning fluid below boiling point, and a handle that locks tanks in place, allowing for intuitive control over fluid and suction functions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the cleaning fluid is heated to high temperature (steam cleaning), then cleaning efficiency is improved, but energy consumption increases

Engineering Contradiction:
Improvecleaning efficiencyVSAvoidenergy consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent changes the temperature parameter from high-temperature steam cleaning to moderate-temperature heated cleaning fluid (below boiling point). The fluid heater heats the cleaning fluid to a temperature that improves cleaning effectiveness through thermal energy while avoiding the high energy consumption of steam generation, thus resolving the contradiction between cleaning efficiency and energy consumption

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If the spot cleaner includes multiple control functions, then user control over cleaning parameters is improved, but device complexity increases

Engineering Contradiction:
Improvecontrol over cleaning parametersVSAvoidcontrol system complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent integrates multiple control functions (suction rate control, fluid temperature control, flow rate control) into a unified control system that manages all parameters through coordinated operation of the vacuum assembly, fluid heater, and pump assembly. This multi-functional integration allows comprehensive control over cleaning parameters while avoiding the complexity of separate independent control mechanisms for each function

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

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

Enables efficient, portable cleaning with intuitive control over fluid temperature and flow rate, reducing energy consumption and improving user experience.

Implementation Method 1

a fluid heater configured to heat the cleaning fluid at or between the clean fluid tank and the orifice

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 2

a vacuum assembly configured for drawing a vacuum airflow from one or more vacuum inlets in the cleaning head through the integrated liquid/air separator in the dirty fluid tank

Methodology Applied
Scientific EffectVacuum suction: Pressure Gradient

Implementation Method 3

a dirty fluid tank including an integrated liquid/air separator

Methodology Applied
Scientific EffectLiquid/air separation: Density Gradient

Data Source

PatentEP4059406B1Spot cleaner apparatus
Publication Date: 2026.02.25 DUPRAY VENTURES INC
  • EP4059406B1 patent drawingFigure 1A
  • EP4059406B1 patent drawingFigure 1B
  • EP4059406B1 patent drawingFigure 1C

AI summary

A spot cleaner apparatus may have a clean fluid tank configured for holding a cleaning fluid. A dirty fluid tank may include an integrated liquid/air separator. A cleaning head may be fluidly coupled to the clean fluid tank, the cleaning head including one or more vacuum inlets and a fluid-nebulizing orifice configured to dispense the cleaning fluid in a mist-like fashion. A pump assembly may fluidly couple the clean fluid tank to the cleaning head. A fluid heater heats the cleaning fluid at or between the clean fluid tank and the fluid-nebulizing orifice. A vacuum assembly configured for drawing a vacuum airflow from one or more vacuum inlets in the cleaning head through the integrated liquid/air separator in the dirty fluid tank.