Hydrodynamic Nozzle Air Passage Ejector Effect
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Solution Overview
Problem
Existing hydrodynamic nozzles consume significant energy and cleaning capacity due to the power required to transport detached material during pipe cleaning, as they rely solely on rinsing water for both cleaning and propulsion.
Innovation Solution
Incorporating an air passage through the nozzle body with an air intake at the forward end and an air discharge at the rear end, radially positioned between and outside the rinsing water discharges, which creates a concentrated air flow that enhances material transport and reduces rinsing water volume and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If rinsing water is used to transport detached material during pipe cleaning, then cleaning function is achieved, but energy consumption and power requirements increase significantly
Solution Approach 1:
The patent introduces a dual-fluid system combining water jets for cleaning and air flow for material transport. The air passage system delivers compressed air through the nozzle body to create an ejector effect that propels detached material forward, separating the cleaning function (water) from the transport function (air), thereby reducing the energy burden on the rinsing water
Solution Approach 2:
The patent changes the physical state and properties of the transport medium by introducing pressurized air with high velocity through the air passage. This parameter change (from liquid water to gaseous air with different density and compressibility) enables more efficient material transport with lower energy consumption
2Productivity
If rinsing water is used for both cleaning and material transport, then complete cleaning function is achieved, but rinsing water consumption increases
Solution Approach 1:
The patent segments the cleaning system into two distinct functional streams: water jets for surface cleaning and air flow for material transport. The air passage system is separated from the water channels, allowing independent optimization of each fluid's function and reducing the volume of water needed for transport operations
Solution Approach 2:
The patent introduces air as an intermediary substance that facilitates material transport without requiring additional water. The air passage acts as a separate transport medium that interacts with detached material to propel it forward, reducing dependency on water volume for this function
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 air passage increases the nozzle's cleaning capacity by utilizing the pressure and flow rate of rinsing water to accelerate air flow, creating an ejector effect that efficiently transports detached material, thereby reducing rinsing water consumption and power requirements.
Implementation Method 1
utilizing the pressure and flow rate of rinsing water to accelerate air flow, creating an ejector effect that efficiently transports detached material
Implementation Method 2
The nozzle is then inserted in a first, near end of the pipe, and is driven to travel to the far end of the pipe in result of the force of reaction that is generated by the pressure of the rinsing water
Data Source
AI summary
A hydrodynamic nozzle comprising a nozzle body having a first, forward end and a second, rear end, in the rear end a section-wise centrally located intake for rinsing water, internal rinsing water channels by which rinsing water is directed from the rinsing water intake to multiple rinsing water discharges mouthing in the rear end of the nozzle body in a radially outer region with respect to the rinsing water intake. The hydrodynamic nozzle has a passage for air extending through the nozzle body, said air passage connecting an air intake, mouthing in the forward end of the nozzle body, to an air discharge mouthing in the rear end of the nozzle body, wherein the air discharge is defined partly through an outer wall located radially inside the rinsing water discharges, and partly through an inner wall located radially outside the rinsing water intake.