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An enrichment device for aerosol particles

An aerosol particle and enrichment technology, which is used in the improvement of process efficiency, preparation of test samples, printing, etc. The effect of force time and high-precision enrichment

Active Publication Date: 2022-06-07
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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  • An enrichment device for aerosol particles
  • An enrichment device for aerosol particles
  • An enrichment device for aerosol particles

Examples

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Effect test

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 generating device; the magnetic field generating device 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 direction of the magnetic aerosol particles subjected to the magnetic force is 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 tapered nozzle, and the cross-sectional area of ​​the linear tapered nozzle gradually decreases from the inlet end to the outlet end; the magnetic field generating device adopts a permanent magnet 2; the permanent magnet 2 is arranged at the inlet end of the enrichment ...

Embodiment 2

[0051] as attached figure 2 As shown, the structural principle of the second embodiment is basically the same as that of the first embodiment, the difference is that the permanent magnet 2 is replaced by the energized helical coil 3; 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 embodiment is also provided in Example 2, that is, the enrichment nozzle 1 is formed by directly winding an energized helical coil.

[0053] The aerosol particle enrichment device described in Embodiments 1 and 2 of the present invention can significantly increase the force-bearing time of the magnetic aerosol particles in the enrichment nozzle, enhance the Saffman lift effect on the magnetic aerosol particles, and make the magnetic aerosol particles stronger. Aerosol particles move efficiently to the central a...

Embodiment 3

[0057] as attached Figure 5-8 As shown, this embodiment 3 provides an aerosol particle enrichment device for enriching charged aerosol particles, including an enrichment nozzle 1 and an electric field generating device; the electric field generating device is arranged on the enrichment nozzle 1 The outer side is used to form an electric field distribution in the enrichment nozzle 1, and the direction of the electric field distribution is parallel to the axis direction of the enrichment nozzle 1; The outlet end of the nozzle 1 points to the inlet end of the enrichment nozzle 1; the electric field distribution direction is opposite to the movement direction of the airflow carrying positive electrosol particles, and the electric field distribution direction is the same as the airflow movement direction carrying negative electrosol particles.

[0058] In this embodiment 3, the enrichment device includes an enrichment nozzle with a gradually shrinking cross section and an electric...

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Abstract

The invention discloses an enrichment device for aerosol particles, which includes an enrichment nozzle and an external force field generating device; the external force field generating device is used to form an external force field distribution in the enrichment nozzle, and the distribution direction of the external force field is the same as that of the enrichment nozzle. The axial direction is parallel; the aerosol particles are subjected to the external force field in the distribution of the external force field, and the direction of the external force field that the aerosol particles are subjected to is directed from the outlet end of the enrichment nozzle to the inlet end of the enrichment nozzle; the present invention utilizes an external force field generating device in the The formation of an external force field distribution in the enrichment nozzle can significantly increase the force time of the aerosol particles in the enrichment nozzle, enhance the Safman lift effect of the aerosol particles, and make the aerosol particles move efficiently to the enrichment nozzle. On the central axis, the high-efficiency and high-precision enrichment of aerosol particles within a short channel length is realized; the enrichment device has huge applications in the fields of additive manufacturing 3D printing, inkjet printing, biomedicine, and environmental testing potential.

Description

technical field [0001] The invention belongs to the technical field of aerosol enrichment, in particular to an enrichment device for aerosol particles. 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. For example, aerosol particle-based printing technology can be used to prepare micro-nano functional structures or printed circuits. Aerosols The high-precision enrichment of particles is of great significance for improving the printing accuracy and micro-nano structure performance. [0003] At present, the method to realize the enrichment of aerosol particles is mainly by changing the nozzle structure; for example, using a pneumatic lens and other structures, so that the aerosol particles are enriched by the centrifugal force directed to the center of the channel and the Saffman lift force and other forces; the structure of the above ...

Claims

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Application Information

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Patent Type & Authority Patents(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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