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Enrichment device for aerosol particles

An aerosol particle enrichment technology, which is applied to the improvement of process efficiency, preparation of test samples, printing, etc., can solve the problems of high-precision enrichment of aerosol particles, weak lateral force, etc., and achieve high precision The effect of enriching and increasing the stress time

Active Publication Date: 2021-07-13
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the technical problems existing in the prior art, the present invention provides an aerosol particle enrichment device to solve the problem that the aerosol particles in the existing enrichment device suffer from relatively weak lateral forces such as the Safman lift force, The technical problem that high-precision enrichment of aerosol particles cannot be achieved within a short channel length

Method used

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  • Enrichment device for aerosol particles
  • Enrichment device for aerosol particles
  • Enrichment device for aerosol particles

Examples

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Embodiment 1

[0043] as attached figure 1 As shown, this embodiment provides an aerosol particle enrichment device for enriching magnetic aerosol particles, including an enrichment nozzle 1 and a magnetic field generator; the magnetic field generator is arranged outside the enrichment nozzle 1 , used to form a magnetic field distribution in the enrichment nozzle 1, and the direction of the magnetic field distribution is parallel to the axis direction of the enrichment nozzle 1; the magnetic aerosol particles are subjected to the magnetic field force from the outlet end of the enrichment nozzle 1 to the direction of the enrichment nozzle 1 entry port.

[0044] The enrichment nozzle 1 adopts a linear tapering nozzle, and the cross-sectional area of ​​the linear tapering nozzle gradually decreases from the inlet end to the outlet end; the magnetic field generator adopts a permanent magnet 2; the permanent magnet 2 is arranged at the inlet end of the enrichment nozzle 1 , and set in the center...

Embodiment 2

[0051] as attached figure 2 As shown, the structure principle of this embodiment 2 is basically the same as that of embodiment 1, the difference is that the permanent magnet 2 is replaced by the energized helical coil 3; wherein, the energized helical coil 3 is evenly wound on the outer wall surface of the enrichment nozzle 1 ; The energized helical coil 3 is used to form a magnetic field distribution around the enrichment nozzle 1 , and the direction of the magnetic field distribution is parallel to the axis direction of the enrichment nozzle 1 .

[0052] Another implementation is provided in Example 2, that is, the enrichment nozzle 1 is formed by direct winding with an energized helical coil.

[0053] The enrichment device for aerosol particles described in Examples 1 and 2 of the present invention can significantly increase the stress time of magnetic aerosol particles in the enrichment nozzle, enhance the Safman lift effect on magnetic aerosol particles, and make the mag...

Embodiment 3

[0057] as attached Figure 5-8 As shown, an aerosol particle enrichment device is provided in Example 3, which is used to enrich charged aerosol particles, including an enrichment nozzle 1 and an electric field generator; the electric field generator is arranged on the enrichment nozzle 1 outside, used to form the electric field distribution in the enrichment nozzle 1, and the direction of the electric field distribution is parallel to the axial direction of the enrichment nozzle 1; the charged aerosol particles are subjected to the electric field force in the electric field distribution, and the direction of the electric field force is determined by the enrichment nozzle 1 The outlet end of the nozzle 1 points to the inlet end of the enrichment nozzle 1; wherein, the electric field distribution direction is opposite to the airflow direction carrying positive aerosol particles, and the electric field distribution direction is the same as the airflow movement direction carrying ...

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Abstract

The invention discloses an enrichment device for aerosol particles. The enrichment device comprises an enrichment nozzle and an external force field generating device, the external force field generating device is used for forming external force field distribution in the enrichment nozzle, and the external force field distribution direction is parallel to the axis direction of the enrichment nozzle; the aerosol particles are acted by an external force field in the distribution of the external force field, and the acting direction of the external force field on the aerosol particles points to the inlet end of the enrichment nozzle from the outlet end of the enrichment nozzle; external force field distribution is formed in the enrichment nozzle through the external force field generating device, the stress time of aerosol particles in the enrichment nozzle can be remarkably prolonged, the Savman lift force effect borne by the aerosol particles is enhanced, the aerosol particles efficiently move to the central axis of the enrichment nozzle, and the efficient and high-precision enrichment of aerosol particles in a shorter channel length is realized; and the enrichment device has huge application potential in the fields of additive manufacturing 3D printing, ink-jet printing, biomedicine, environment detection and the like.

Description

technical field [0001] The invention belongs to the technical field of aerosol enrichment, in particular to an aerosol particle enrichment device. Background technique [0002] Aerosol particles have a wide range of applications in the fields of additive manufacturing (3D printing), inkjet printing, biomedicine and environmental testing, such as printing technology based on aerosol particles, which can be used to prepare micro-nano functional structures or printed circuits, aerosol The high-precision enrichment of particles is of great significance for improving the printing accuracy and the performance of micro-nano structures. [0003] At present, the method to achieve the enrichment of aerosol particles is mainly by changing the structure of the nozzle; such as the use of aerodynamic lens and other structures, so that the aerosol particles are enriched by the centrifugal force directed to the center of the channel and the Safman lift force; the structure of the above meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28B41J2/14B29C64/20
CPCG01N1/28B41J2/14B29C64/20Y02P10/25
Inventor 范亮亮赵亮王尧
Owner XI AN JIAOTONG UNIV
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