Spiral Pipe Shaping Guide for Reliable Coating Sprayer Flow

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Solution Overview

Problem

Existing pipe installations in coating product sprayers are complex, require skilled labor for installation, and lack repeatability, with potential for fluid flow obstruction due to improper positioning and curvature issues.

Innovation Solution

A spiral-shaped retaining portion guide that surrounds the pipe cross-section over more than half of the circumference, ensuring secure positioning without clamping, allowing for easy installation and maintenance, and maintaining fluid flow integrity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a complex pipe installation method is used to ensure proper positioning and curvature, then the reliability of fluid flow is improved, but the ease of installation and maintenance deteriorates

Engineering Contradiction:
Improvefluid flow reliabilityVSAvoidinstallation ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

A guide structure is introduced as an intermediary component between the pipe and the sprayer body. The guide features a spiral-shaped retaining portion that automatically shapes and positions the pipe during insertion, ensuring proper curvature and positioning without requiring complex manual installation procedures. This mediator structure enables both reliable fluid flow and easy installation simultaneously.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the pipe is secured using clips or corrugated zones, then the pipe positioning is improved, but the internal cross-section area is reduced causing fluid flow obstruction

Engineering Contradiction:
Improvepipe positioning reliabilityVSAvoidfluid flow obstruction
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The harmful clips and corrugated zones that cause localized crushing and flow obstruction are completely removed from the design. Instead, the pipe is retained through the geometric configuration of the spiral-shaped retaining portion in the guide, which secures the pipe through its outer shape without any clamping or pinching elements that would reduce the internal cross-section area.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The guide structure provides localized support and shaping only where needed - through the spiral-shaped retaining portion that contacts the pipe externally. The pipe's internal cross-section remains completely untouched and uncrushed throughout its length, maintaining full fluid flow capacity while still achieving reliable positioning through the external guide geometry.

Inventive Principle:
Principle #3Local quality

3Manufacturing precision

If manual installation by qualified workforce is used, then the installation quality is improved, but the productivity and repeatability deteriorates due to skill dependency

Engineering Contradiction:
Improveinstallation qualityVSAvoidinstallation speed
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The guide structure is designed to automatically perform the pipe shaping and positioning functions that previously required skilled manual work. When the pipe is inserted into the guide, the spiral-shaped retaining portion automatically shapes the pipe to the correct geometry and positions it properly. This self-service mechanism eliminates dependency on operator skill while maintaining high installation quality and enabling faster, more repeatable installations.

Inventive Principle:
Principle #25Self-service

4Volume of moving object

If the pipe follows an imposed spiral path with predetermined length, then the space utilization is improved, but the installation complexity increases

Engineering Contradiction:
Improvespace utilizationVSAvoidinstallation complexity
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

The guide structure is pre-formed with the spiral-shaped retaining portion that defines the desired pipe path geometry. This preliminary preparation of the guide eliminates the need for complex manual routing and positioning operations during installation. The pipe naturally follows the pre-defined spiral path as it is inserted into the guide, achieving efficient space utilization without increasing installation complexity.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12485445B2Pipe shaping guide, coating product sprayer comprising such a guide and coating product application installation comprising such a sprayer
Publication Date: 2025.12.02 EXEL INDUSTRIES
  • US12485445B2 patent drawing
  • US12485445B2 patent drawing
  • US12485445B2 patent drawing

AI summary

A shaping guide of at least one pipe for feeding a fluid product into a spraying element belonging to a sprayer of coating product is configured for being mounted around a central body of the sprayer and includes at least one spiral-shaped retaining portion for retaining in position a section of the feeding pipe, with a predetermined geometry, configured for providing electrical insulation between a mouth and an outlet of the feeding pipe. Each retaining portion has, in cross-section, a concave inner shape configured for surrounding the pipe section over more than half of the circumference thereof, preferentially, a shape in the form of an arc of a circle or U-shaped, which extends over an angular sector with an angle at the apex greater than or equal to 185°.