Air curtain type laser aerosol disinfection device and use method

Abstract

The invention discloses an air curtain type laser aerosol disinfection device and a use method thereof. The device comprises a laser generator, a beam shaper, a polygon prism and a focusing field lens, wherein laser emitted by the laser generator is incident to the beam shaper; the laser beam shaper adjusts the laser into light spots and then uniformly irradiates the light spots into the polygon prism; the focusing field lens is arranged behind the polygon prism; and the laser sequentially passes through the polygon prism and the focusing field lens and then enters a lower working area to perform high-speed scanning on aerosol in a space. The device also comprises an absorption area arranged below the working area and used for absorbing redundant laser energy. The working area is scanned at a high speed through the laser beams so as to effectively kill aerosol in circulating air in the working area and bacteria, viruses and the like in the circulating air, and due to the high directivity characteristic of laser, optical scattering or diffuse reflection cannot be caused, and harm to a human body cannot be caused.

Description

technical field [0001] The invention belongs to the technical field of laser sterilization, and in particular relates to an air curtain type laser aerosol disinfection device and a use method. Background technique [0002] Studies have shown that air pollutants are mainly divided into three categories: particulate matter, gaseous pollutants, and organisms. As one of the categories, airborne biological pollutants are mainly transmitted in the form of bioaerosols. Bioaerosols are colloidal systems formed by microorganisms suspended in the air, including bacteria, fungi, mold spores, pollen, dander, allergens, Viruses, dust mites and parasite eggs, etc., the particle size is mainly concentrated between 0.1-1μm. Bioaerosols can spread at an extremely fast speed with people's coughing, sneezing, etc., which is hard to guard against. It can cause allergies in mild cases, and respiratory diseases in severe cases, and may even be life-threatening. The new type of coronavirus, the...

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Problems solved by technology

Surface cleaning and spray technology are traditional and simple technologies. Cleaning is only suitable for surface sterilization of desktops and floors. It is difficult to achieve spraying in a large environment, and because the spray distance is too long, droplets in the air will accumulate and form When it rains, a large amount of spraying liquid is accumulated on the ground, which is very harmful. Therefore, cleaning and spraying techniques are not suitable for large-scale environment sterilization

Although ozone has a strong bactericidal effect, the strong oxidizing properties of ozone are harmful to human health.

High-voltage electric pulse sterilization has the advantages of short sterilization time and low energy consumption, but there are potential safety hazards due to high-voltage ignition

Ultraviolet sterilization technology is currently the most widely used sterilization technology, but theoretically the effective distance of ultraviolet sterilization does not exceed 2m, and ultraviolet sterilization must be carried out in an unmanned environment, excessive ultraviolet radiation will cause damage to human skin and cornea, even cause cancer

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