Electrostatic Atomization Nozzle With Gas Isolation

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Solution Overview

Problem

Common electrostatic atomization nozzles have complex structures, high machining accuracy requirements, and poor consistency in charging effects, limiting their efficiency and practicality.

Innovation Solution

A nozzle assembly comprising a strip-shaped electrode and an insulating body with separate fluid channels for gas and liquid, where the electrode is isolated by a high-speed gas flow to prevent direct contact and ensure stable atomization and charging, using a power supply to induce charges on droplets with reduced voltage requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If common electrostatic atomization nozzles are used, then droplet atomization and charging can be achieved, but the structure becomes complex and machining accuracy requirements increase

Engineering Contradiction:

Improvecharging effect consistencyVSAvoidnozzle structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The nozzle is divided into separate functional components: a simple electrode, an insulating body, and separate fluid channels for gas and liquid. This segmentation allows each component to be manufactured independently with lower precision requirements while maintaining the overall charging and atomization function.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The complex charging mechanism is extracted and simplified by using a high-voltage electrode that directly charges droplets through electrostatic induction, eliminating the need for complex charging nozzles or additional charging components. The charging function is achieved through the electrode's electric field rather than mechanical complexity.

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If the electrode directly contacts the liquid flow, then charging can occur, but the electrode becomes wet and charging stability decreases

Engineering Contradiction:

Improvecharging stabilityVSAvoidelectrode isolation structure

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

A high-speed gas flow is introduced as an intermediary between the electrode and liquid flow. The gas flow carries charged droplets away from the electrode while preventing direct contact between the electrode and liquid, thus maintaining electrode dryness and charging stability without requiring complex isolation structures.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

A pneumatic system using high-speed gas flow is employed to isolate the electrode from the liquid flow. The gas flow serves dual purposes: it delivers charged droplets to the electrode for charging and simultaneously prevents liquid contact with the electrode, eliminating the need for mechanical isolation structures.

Inventive Principle:

Principle #29Pneumatics and hydraulics

3Reliability

If high voltage is applied to the electrode, then charging effect improves, but power consumption increases

Engineering Contradiction:

Improvecharging effectVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system optimizes the voltage parameter by using high-voltage electrode to achieve effective charging, while the high-speed gas flow ensures efficient droplet transport and charging, reducing the actual power consumption compared to conventional low-voltage systems that require more complex mechanisms to achieve the same charging effect.

Inventive Principle:

Principle #35Parameter changes

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 solution provides a simple, stable, and efficient atomization and charging effect with fine, uniformly charged droplets, improving the utilization rate of liquid medicines and attachment efficiency while maintaining the electrode in a dry state.

Implementation Method 1

the electrode is isolated by a high-speed gas flow to prevent direct contact and ensure stable atomization

Methodology Applied

Scientific EffectGas flow isolation:

Implementation Method 2

using a power supply to induce charges on droplets with reduced voltage requirements

Methodology Applied

Scientific EffectElectrostatic induction: Electrostatic Induction

Implementation Method 3

A high-pressure gas flow in the air-assisted atomization can not only atomize a liquid flow into droplets with smaller diameter

Methodology Applied

Scientific EffectAir-assisted atomization:

Data Source

PatentUS11850618B2Nozzle assembly, ejecting device and ejecting method

Publication Date: 2023.12.26 YANTAI JEREH PETROLEUM EQUIP & TECH CO LTD

AI summary

A nozzle assembly, an ejecting device and an ejecting method are provided. The nozzle assembly includes an electrode and an insulating body portion. A first fluid channel is arranged in the insulating body portion, an opening is formed on the inner surface. A second fluid channel is arranged between the inner surface of the insulating body portion and the side surface of the electrode. An ejecting outlet is formed on the outer end surface. The second fluid channel is communicated with the first fluid channel at the opening. At least part of the second fluid channel is located between the first fluid channel and the electrode. In the first direction, the opening is located between the first end surface and the second end surface of the electrode.