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Monodisperse aerosol generator

An aerosol generator and aerosol technology, applied in the direction of dissolution, microcapsule preparation, chemical instruments and methods, etc., can solve problems such as difficulties, poor monodispersity, complex structure, etc., and meet the requirements of simplified configuration and low pressure bearing requirements , easy-to-obtain effect

Inactive Publication Date: 2010-08-18
CHINA ACAD OF BUILDING RES
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Problems solved by technology

Among them, the polydisperse aerosol generator has the advantages of relatively simple structure, convenient operation, and high particle concentration, but its monodispersity is poor, and it becomes difficult to generate small particle size particles (about 0.1 μm); while monodisperse aerosol Generators often have low aerosol concentrations, complex structures, and inconvenient adjustments

Method used

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Embodiment Construction

[0025] As shown in Fig. 1, a monodisperse aerosol generator of the present invention is developed using the principle of "cloud formation", that is, steam wraps on condensation nuclei to form aerosol particles. It consists of four parts: 1) Part where condensation nuclei occur; 2) Part where steam occurs; 3) Part where aerosol is formed; 4) Device control and regulation part. Along the aerosol formation process, the condensation nucleus source part, the steam generation part and the aerosol formation part are sequentially connected in series; the device control and regulation part is connected with the steam generation part and the aerosol formation part. The following describes the composition and functions of the four parts.

[0026] 1) Condensation source part: This part is composed of pressure gauge 1, sprayer 2 and drying pipe 3 in series. Pressure gauge 1 is used to measure the spray pressure. Sprayer 2 is mainly used to spray liquid aerosol particles. It is the key par...

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Abstract

The invention provides a monodisperse aerosol generator which is developed by utilizing a 'cloud formation' theory, namely, steam is led to enwrap condensation nucleuses to form aerosol particles. The monodisperse aerosol generator comprises 1) a condensation nucleus source generating part, 2) a steam generating part, 3) an aerosol forming part and 4) a device controlling and adjusting part. By following a formation process of the aerosol, the condensation nucleus source generating part, the steam generating part and the aerosol forming part are serially connected in sequence; the device controlling and adjusting part is connected with the steam generating part and the aerosol forming part. The monodisperse aerosol generator of the invention has comparatively low spraying pressure which causes a clean carrier gas source to be obtained easily and has low requirement of the bearing pressure of a device, thus simplifying a device structure since clean carrier gas of air can be obtained only by using an ordinary vacuum pumps, can generate the aerosol with high concentration and produce the aerosol particles reaching the design objective concentration and meeting the test requirements of a high-efficiency air filter.

Description

(1) Technical field: [0001] The invention provides a monodisperse aerosol generator, which relates to an aerosol generator in a filter / filter material efficiency test bench, in particular to an aerosol generator in a high-efficiency air filter performance testing bench. (two) background technology: [0002] The aerosol generator is an indispensable device in the filter / filter material performance testing test bench. To study a new filter performance test method, the first problem to be solved is to test the stable generation of aerosol, that is, there is an aerosol generator that can generate aerosol particles that meet the test requirements. At present, the performance test methods of high-efficiency air filters in my country are sodium flame method and oil mist method. The aerosol generating device has a complex structure, occupies a large area, and has a narrow scope of application. It is only suitable for the above two test methods. However, the mainstream method for te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F3/04B01J13/04
Inventor 王智超刘志军王国云
Owner CHINA ACAD OF BUILDING RES
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