Rotating Nozzle With Offset Ports For Dynamic Spray

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Solution Overview

Problem

Existing high pressure air and water nozzles for industrial applications lack dynamic flow patterns and are prone to clogging, with fixed geometry and cumbersome fluid couplings, limiting their effectiveness in generating high flow rates and pressures needed for tasks like part cleaning and hydro-excavation.

Innovation Solution

A rotating nozzle design featuring a rotating head with offset supply and discharge ports, a shroud for soil disruption, and a ball bearing for reduced friction, capable of handling high pressures and flow rates, and adaptable for different applications with quick connection mechanisms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If fixed geometry nozzles are used for high pressure industrial applications, then high pressure and flow rates are achieved, but dynamic flow pattern is lost and clogging occurs

Engineering Contradiction:
Improvehigh pressure and flow ratesVSAvoidclogging and susceptibility to breakage
Core Design Contradiction:
PowerVSReliability

Solution Approach 1:

The nozzle incorporates a rotating head with multiple discharge ports arranged in an offset pattern around the rotational axis. As the head rotates, the discharge ports dynamically change position relative to the spray direction, creating a dynamic flow pattern that prevents clogging and distributes wear evenly across the nozzle structure.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The nozzle head is divided into multiple separate discharge ports positioned at different angular locations. This segmentation allows each port to handle a portion of the fluid flow independently, reducing the likelihood of complete clogging and enabling easier cleaning of individual ports without disassembling the entire nozzle.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If rotor within chamber design is used, then flow pattern is created, but device becomes susceptible to breakage and difficult to clean

Engineering Contradiction:
Improveflow pattern generationVSAvoiddifficulty to clean and maintain
Core Design Contradiction:
Ease of operationVSEase of repair

Solution Approach 1:

The rotating head is designed as a separate, removable component that can be easily detached from the nozzle body. This extraction design allows the head to be removed for cleaning or replacement without disassembling the entire nozzle assembly, significantly improving maintenance accessibility and reducing downtime.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The nozzle design allows operators to quickly remove and clean the rotating head without requiring specialized tools or complex disassembly procedures. The simple attachment mechanism enables self-service maintenance, where operators can clean the discharge ports and surfaces directly during routine maintenance intervals.

Inventive Principle:
Principle #25Self-service

3Adaptability or versatility

If multiple nozzles are switched for different applications, then application versatility is achieved, but cumbersome fluid couplings are required

Engineering Contradiction:
Improveapplication switching capabilityVSAvoidfluid coupling complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The nozzle is designed with a universal quick-connect interface that accommodates different nozzle types and configurations. The standardized coupling mechanism allows operators to switch between different nozzle applications by simply replacing the nozzle head or attachment, eliminating the need for complex fluid couplings and reducing the time required for application switching.

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

4Productivity

If pressure washer adds power for higher pressure and velocity, then cleaning effectiveness is improved, but flow rate and pressure remain below industrial requirements

Engineering Contradiction:
Improvecleaning effectivenessVSAvoidpressure and flow rate output
Core Design Contradiction:
ProductivityVSPower

Solution Approach 1:

The rotating head design creates dynamic spray patterns that enhance cleaning effectiveness through varying impact angles and positions. This dynamic action allows the nozzle to maintain high cleaning productivity while operating at industrial-grade pressure and flow rates, as the rotating motion distributes the cleaning force across different areas and prevents localized saturation.

Inventive Principle:
Principle #15Dynamics

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 rotating nozzle generates a dynamic spray pattern, effectively handles high pressures and flow rates, and is adaptable for various industrial tasks, reducing clogging and fluid loss while maintaining a watertight connection.

Implementation Method 1

each discharge port is offset from the respective supply port to cause the head to rotate when fluid flows through the passageways

Methodology Applied
Scientific EffectFluid flow induced rotation: Torque

Implementation Method 2

The rotating head further includes a ball bearing that is adapted to mate to a sidewall of the housing using a support ring

Methodology Applied
Scientific EffectBall bearing lubrication: Ball Bearing

Implementation Method 3

A lubricating channel is interposed between a sidewall of the housing and an upper portion of the rotating head

Methodology Applied
Scientific EffectLubrication: Lubrication

Implementation Method 4

Each supply port may have a funnel shape adapted to direct fluid into each passageway

Methodology Applied
Scientific EffectFunnel flow direction: Funnel

Implementation Method 5

funnel shape adapted to direct fluid into each passageway and to reduce hydraulic losses

Methodology Applied
Scientific EffectHydraulic loss reduction: Pressure Drop

Implementation Method 6

A lower edge of the shroud is adapted to break up soil when the edge is pushed into the soil

Methodology Applied
Scientific EffectImpact force: Impact Force

Implementation Method 7

a gasket may be interposed between the housing and shroud to form a watertight connection

Methodology Applied
Scientific EffectGasket sealing: Adhesive

Data Source

PatentUS9931649B2Rotating high pressure air and water nozzle
Publication Date: 2018.04.03 VERMEER MFG CO
  • US9931649B2 patent drawing
  • US9931649B2 patent drawing
  • US9931649B2 patent drawing

AI summary

A rotating high pressure air and water nozzle is disclosed. The nozzle includes a head adapted to rotate, a housing adapted to secure the head therein, and a plurality of passageways disposed through the head. In addition, the nozzle includes a supply port disposed at a first end of each of the passageways, where each supply port has a funnel shape adapted to direct fluid into each passageway to reduce hydraulic losses, and a discharge port disposed at an opposing end of each of the passageways adapted to discharge a jet of fluid. Each discharge port is offset from the respective supply port to cause the head to rotate when fluid flows through the passageways.