Flat Spray Head for Paint Guns Reducing Residue

Solution Overview

Problem

The existing spray heads for paint guns are difficult to clean and maintain due to their shape, which leads to frequent interruptions in the painting process to remove accumulated paint product, causing inefficiencies and increased cleaning efforts.

Innovation Solution

A spray head with a substantially flat front spray surface and the absence of typical projections, featuring calibrated holes of various diameters and tilts on the front surface, allowing for effective atomization and fan formation while reducing residue accumulation and facilitating easier cleaning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the spray head uses a traditional shape with protrusions for calibrated holes, then the atomization and spray fan formation are effective, but the paint product accumulates significantly on the head surface

Engineering Contradiction:

Improveatomization performanceVSAvoidpaint accumulation

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent inverts the traditional spray head design by replacing protrusions with recesses. The calibrated holes are now formed in a flat front surface with recessed areas, reversing the conventional approach where holes were on protruding elements. This inversion prevents paint accumulation while maintaining atomization effectiveness.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent extracts the problematic protrusions from the spray head design, leaving only a flat front surface with calibrated holes. By removing the protruding elements that caused paint accumulation, the design eliminates the harmful accumulation effect while preserving the essential atomization function through the calibrated holes in the flat surface.

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If the spray head has protrusions with calibrated holes, then the spray function is achieved, but the cleaning procedure becomes particularly hard-working and time-consuming

Engineering Contradiction:

Improvespray functionVSAvoidcleaning ease

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent inverts the traditional spray head design by replacing protrusions with recesses. The calibrated holes are now formed in a flat front surface with recessed areas, reversing the conventional approach where holes were on protruding elements. This inversion prevents paint accumulation while maintaining atomization effectiveness.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent extracts the problematic protrusions from the spray head design, leaving only a flat front surface with calibrated holes. By removing the protruding elements that caused paint accumulation, the design eliminates the harmful accumulation effect while preserving the essential atomization function through the calibrated holes in the flat surface.

Inventive Principle:

Principle #2Taking out (Extraction)

3Manufacturing precision

If the spray head uses traditional shape, then the calibrated holes can be implemented on protrusions, but frequent interruptions are necessary to cleanse the spray head

Engineering Contradiction:

Improvecalibrated holes implementationVSAvoidpainting efficiency

Core Design Contradiction:

Manufacturing precisionVSProductivity

Solution Approach 1:

The patent inverts the traditional spray head design by replacing protrusions with recesses. The calibrated holes are now formed in a flat front surface with recessed areas, reversing the conventional approach where holes were on protruding elements. This inversion prevents paint accumulation while maintaining atomization effectiveness.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent extracts the problematic protrusions from the spray head design, leaving only a flat front surface with calibrated holes. By removing the protruding elements that caused paint accumulation, the design eliminates the harmful accumulation effect while preserving the essential atomization function through the calibrated holes in the flat surface.

Inventive Principle:

Principle #2Taking out (Extraction)

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 new spray head design enhances cleaning ease, reduces residue deposition, and allows for more effective fan configurations, leading to improved painting efficiency and reduced chemical product usage for cleaning.

Implementation Method 1

The spray head is equipped with a series of calibrated holes which can have different angular tilts. Said holes are useful to atomize and to open the nebulized jet to form the spray fan.

Methodology Applied

Scientific EffectAtomization:

Data Source

PatentEP4106927B1Head for paint gun

Publication Date: 2025.04.02 BARNINI SRL

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Figure 2A~2B
Figure 3

AI summary

The present invention relates to a spray head (10) for paint guns, comprising a substantially cylindrical body with a front spray surface (SF) substantially flat for its whole extension and without projections protruding from said front spray surface (SF), wherein said front spray surface (SF) carries a plurality of calibrated holes (13), in communication with corresponding feeding ducts obtained in the body of the spray head (10).