Welding Nozzle Spray Enclosure With Baffle for Overspray Containment

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Solution Overview

Problem

Conventional anti-spatter fluid sprayers and spray containment systems for welding gun nozzles require frequent maintenance, are complex to manufacture, and allow significant overspray, reducing their operational efficiency and durability.

Innovation Solution

The proposed anti-spatter fluid sprayers and spray containment systems feature an enclosure with a top plate and internal baffle that blocks overspray, funneling unneeded fluid to a drain port, eliminating the need for o-rings at the nozzle insertion point and allowing use with various nozzle sizes without adjustments, thus reducing maintenance and increasing durability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional spray containment systems are used, then anti-spatter fluid can be applied to welding nozzles, but frequent maintenance is required and the systems are complex to manufacture

Engineering Contradiction:
Improveoperational efficiencyVSAvoidmanufacturing complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The spray containment system is divided into separate functional components: a spray chamber for fluid application, a collection chamber for overspray, and a drain system. This segmentation allows each component to be optimized independently and simplifies manufacturing while maintaining reliability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent extracts the overspray containment function from the traditional spray system by adding a separate collection chamber and drain port. This removes the complexity of sealed enclosures with multiple seals while effectively containing and managing overspray fluid.

Inventive Principle:
Principle #2Taking out (Extraction)

2Reliability

If conventional spray containment systems are used, then anti-spatter fluid can be contained, but significant overspray occurs reducing operational efficiency

Engineering Contradiction:
Improveoperational efficiencyVSAvoidanti-spatter fluid overspray
Core Design Contradiction:
ReliabilityVSLoss of substance

Solution Approach 1:

A baffle wall is introduced as an intermediary element between the spray chamber and the collection chamber. This baffle intercepts overspray fluid, redirecting it to the drain port while allowing proper anti-spatter application, thereby reducing fluid loss and improving operational efficiency.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If conventional spray containment systems with o-rings are used, then nozzle insertion is sealed, but maintenance frequency increases due to seal degradation

Engineering Contradiction:
ImprovedurabilityVSAvoidmaintenance interval
Core Design Contradiction:
ReliabilityVSDuration of action of moving object

Solution Approach 1:

The patent removes o-rings and sealed connections from the nozzle insertion mechanism. Instead of relying on degradable seals, the design uses open channels and gravity-driven drainage, eliminating the maintenance burden associated with seal replacement while improving durability.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The spray containment system is designed to be self-cleaning through gravity-driven drainage. Fluid naturally flows to the drain port without requiring manual intervention or sealed components that degrade, extending the maintenance interval and improving reliability.

Inventive Principle:
Principle #25Self-service

4Reliability

If conventional spray containment systems are used, then anti-spatter fluid can be sprayed, but the systems allow significant fluid escape reducing containment effectiveness

Engineering Contradiction:
Improvecontainment effectivenessVSAvoidfluid escape
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The baffle wall serves as an intermediary that intercepts and redirects overspray fluid before it can escape the containment system. This simple structural element effectively manages fluid flow paths, preventing harmful fluid escape while maintaining spray application effectiveness.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

This design significantly reduces maintenance requirements, enhances durability, and minimizes overspray, allowing for more effective containment of anti-spatter fluid, thereby extending the interval between maintenance and improving system performance.

Implementation Method 1

a baffle configured to block at least a first portion of sprayed fluid from the spray nozzle from exiting the enclosure

Methodology Applied
Scientific EffectPhysical containment through baffle: Physical Containment

Implementation Method 2

the top plate configured to block at least a second portion of the sprayed fluid from the spray nozzle that is not blocked by the baffle

Methodology Applied
Scientific EffectPhysical containment through top plate: Physical Containment

Implementation Method 3

the enclosure configured to funnel the sprayed fluid in a direction toward the drain port

Methodology Applied
Scientific EffectFluid funneling: Funnel

Data Source

PatentUS12162105B2Spray containment systems and welding gun nozzle cleaning systems including spray containment systems
Publication Date: 2024.12.10 ILLINOIS TOOL WORKS INC
  • US12162105B2 patent drawing
  • US12162105B2 patent drawing
  • US12162105B2 patent drawing

AI summary

An anti-spatter spray containment system includes: an enclosure having a nozzle insertion orifice on a first side and a drain orifice on a second side of the enclosure; a spray nozzle configured to spray fluid toward a nozzle inserted into the nozzle insertion orifice, wherein the enclosure is configured to funnel the fluid in a direction toward the second side; and a baffle configured to block at least a first portion of sprayed fluid from the spray nozzle from exiting the enclosure via the nozzle insertion orifice, the first side configured to block at least a second portion of the sprayed fluid from the spray nozzle that is not blocked by the baffle.