Powder Thin-Flow Pump With Integrated Control for Spray Coating

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Solution Overview

Problem

Existing powder dispensing systems require complex wiring and separate control units, leading to inefficient and operator-dependent spray coating operations that compromise coating quality and efficiency.

Innovation Solution

A powder dispensing device with an integrated control unit that sets parameters for both powder conveying and spray coating processes, eliminating the need for separate control units and reducing wiring complexity, while allowing for both manual and automatic operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If separate control units and complex wiring are used for powder dispensing devices, then spray coating operations can be performed, but the system complexity and wiring requirements increase

Engineering Contradiction:
Improvespray coating operationsVSAvoidwiring and control units
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent combines the control unit directly into the powder dispensing device housing, merging previously separate control functions and wiring into an integrated unit. This eliminates the need for external control units and complex wiring connections, thereby reducing system complexity while maintaining full spray coating operational capabilities.

Inventive Principle:
Principle #5Merging (Combining)

2Manufacturing precision

If separate control units are used for powder conveying and spray coating, then parameter control is possible, but the system size and cost increase

Engineering Contradiction:
Improveparameter controlVSAvoidsystem size and cost
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The integrated control unit performs multiple functions: it controls both powder conveying parameters (via the powder thin-stream pump) and spray coating parameters (via the powder spraying device). This multi-functional design eliminates the need for separate control units, reducing system size and cost while maintaining precise parameter control for both processes.

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

3Adaptability or versatility

If manual operation with operator-dependent settings is used, then flexibility is maintained, but coating quality and efficiency are compromised

Engineering Contradiction:
Improveoperational flexibilityVSAvoidcoating quality
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The control unit provides automated control with feedback mechanisms that monitor and adjust spray coating parameters and powder conveying settings. This ensures consistent, high-quality coating results by maintaining optimal parameter settings, eliminating the variability and quality issues associated with manual operator-dependent settings while preserving operational flexibility.

Inventive Principle:
Principle #23Feedback

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 integrated control unit simplifies spray coating operations, enhances coating quality and efficiency, and reduces system size, making it more compact and cost-effective.

Implementation Method 1

A vacuum is created in the injector by means of a conveying or transport air stream. This vacuum draws the powder or coating powder into the transport air stream.

Methodology Applied
Scientific EffectVacuum: Vacuum

Implementation Method 2

the amount of powder conveyed by the injector per unit of time depends primarily on the amount of transport or conveying air flowing through the injector per unit of time

Methodology Applied
Scientific EffectEntrainment: Entrainment

Data Source

PatentEP3902633B1Powder discharge device with a powder thin flow pump
Publication Date: 2026.03.18 GEMA SWITZERLAND GMBH
  • EP3902633B1 patent drawingFigure 1
  • EP3902633B1 patent drawingFigure 2~3
  • EP3902633B1 patent drawingFigure 4

AI summary

The invention relates to a powder discharge device (50) with a powder thin flow pump (51) for delivering powder, particularly coating powder, from a powder reservoir to a powder spray device, with a control device (52) being integrated in the powder discharge device (50), which control device is designed to adjust at least one parameter, which is characterizing in relation to a spray coating process performed with the powder spray device and/or in relation to a powder delivery performed with the powder thin flow pump (51), the control device (52) forming a structural unit with the powder thin flow pump (51).