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Plane liquid layer atomizing method

A liquid layer and plane technology, applied in the direction of liquid injection device, injection device, injection device, etc., can solve the problems of atomization quality deterioration, unsuitable for ultrasonic nozzles, etc.

Inactive Publication Date: 2011-05-04
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The limitation of the ultrasonic nozzle is that it cannot be used in occasions with a high liquid flow rate. The maximum liquid flow rate at a frequency of 55 kHz is only 1.95ml / s. Exceeding this flow rate will cause the deterioration of the atomization quality
However, most applications of flat slit nozzles or air-assisted flat slit nozzles (such as gas turbines and oil-fired boilers) happen to be in the larger flow category and are not suitable for ultrasonic nozzle technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Using a plane slit nozzle with a width-to-thickness ratio of 20, the theoretical numerical calculation and fragmentation test of the plane water layer are carried out. The water jet injection pressure is 0.4MPa, the flow velocity is 1m / s, 2m / s, 3m / s, 4m / s, 5m / s, the ambient gas is still air, and the preset calculation tolerance is 10 -4 . The most unstable frequency of the jet breakup point is 18 Hz obtained by numerical calculation based on the dimension-dispersion criterion relation of the planar liquid layer ejected into the still air environment derived from the nonlinear stability. The resonant frequency is designed using the 18Hz subsonic frequency point, and the test is carried out in the transverse resonant mode. The comparison of the experimental results of the plane slit nozzle without resonance (0 Hz) and the application of theoretically calculated subsonic resonance frequency (18 Hz) to the plane slit nozzle for transverse resonance is shown in attached tab...

Embodiment 2

[0057] Using an air-assisted flat slit nozzle with a width-to-thickness ratio of 20, the theoretical numerical calculation and fragmentation test of the air-assisted flat water layer are carried out. The water jet injection pressure is 0.4MPa, the flow velocity is 1m / s, 5m / s, and the air-assisted flow velocity on both sides of the water layer is 0m / s, 5m / s, 10m / s, 15m / s, 20m / s, 25m / s s, the default calculation tolerance is 10 -4 . The most unstable frequency of the jet breakup point is 36 Hz obtained by numerical calculation based on the dimension-dispersion criterion relation of the planar liquid layer ejected into the air-assisted environment derived from the nonlinear stability. The resonant frequency is designed using the 36Hz subsonic frequency point, and the test is carried out in the transverse resonant mode. The test results of transverse resonance of the air-assisted flat slit nozzle without resonance (0 Hz) and the application of theoretically calculated subsonic r...

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Abstract

The invention relates to the liquid atomization field, in particular to an atomization method of a planar liquid layer, which is applicable to a planar slit nozzle and an air-assisted planar slit nozzle. The nozzles adopt a transverse resonance mode, and the resonance frequency of the resonance mode is the most unstable frequency of planar liquid layer injection first level atomization fragmentation determined by using a dimension dispersion criterion equation.

Description

technical field [0001] The invention relates to the field of liquid atomization, in particular to an atomization method of a plane liquid layer, which is suitable for plane slit nozzles and air-assisted plane slit nozzles. Background technique [0002] Liquid atomization technology is widely used. The general application of spray mainly has the following aspects: (1) Daily life: shower, garden and lawn watering, hairspray and mousse for hair styling, sprayer for killing mosquitoes and flies, air disinfection, cleaner, air humidification (2) medical use: atomized phlegm cleaner and evaporation of volatile anesthetics, etc.; (3) production and process flow: atomized drying (such as coffee and Tea, tablet sugar coating, soap and detergent, etc.), atomization wetting, atomization cooling (such as atomization pool, tower, reactor, etc.), atomization reaction (such as absorber, dryer and car paint room), Powder metallurgy, surface coating (such as epoxy resin, polyester, etc.), ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05B17/00B05B1/02
Inventor 曹建明蹇小平高强李跟宝王磊陈志伟张秋霞李雪莉罗明刘朋苏海东陈文凤
Owner CHANGAN UNIV