High-cleanliness low-resistance gas filter for human respiration

Abstract

The invention belongs to the field of breathing gas filtering, and is characterized in that air inhaled by a human body firstly enters a filtering module through an air inlet of the inhaled air high-cleanliness low-resistance filtering module, and is filtered into high-cleanliness gas through a filtering material; then, the clean gas upwards enters the clean gas output connecting pipe along gaps separated by fences of the inhalation gas channel fence box and is sent to a respirator for human body inhalation; gas exhaled by a human body is sent to the exhaled gas filtering and cleaning cabin through the exhaled gas input filtering connecting pipe, is uniformly distributed along gaps formed by the exhaled gas channel fence box, and is filtered by the exhaled gas cleaning and filtering module. A bag type filtering technology, a multi-connection parallel technology and a space separation technology are adopted, so that the high-efficiency low-resistance filter can be miniaturized, the requirements of people for carrying and using are met, and the high-efficiency low-resistance filter is mainly used for personal virus prevention, influenza prevention, haze prevention, industrial and mining dust prevention, household fire control, formaldehyde removal and the like; the device can also be used for daily protection of hospital doctors, high-cleaning treatment of air exhaled by infectious disease patients and the like.

Description

technical field [0001] The invention relates to the technical field of respiratory gas filtration, which is to filter the gas inhaled and exhaled by a human body through a special filter module with high cleanliness, so as to solve the problems of personal respiratory system protection and social infectious disease prevention and control. Background technique [0002] At present, the commonly known technology is to make masks into SMS and SMMMS with melt-blown non-woven materials, such as N95 masks, which can filter ≥ 0.3 micron particles, bacteria and some viruses, and the material filtration efficiency can be greater than 95%. After the outer aerosols and droplets are lost, only the virus monomers are left attached to the mask. If the number of viruses enriched in the outer layer of the mask is large, it is difficult to avoid small-sized viruses that will not wear out as people continue to breathe repeatedly. Enter the lungs through a larger barrier net. There are three m...

AI Technical Summary

Problems solved by technology

The first defect is that the respiratory system cannot be well sealed and protected, and the air leakage rate is high, even if it is worn correctly, the air leakage rate is as high as 8%.

The second defect is that the filtration efficiency is not high enough to achieve high-clean filtration, and the resistance is large. Even if the materials of many masks have a filtration efficiency of less than 90%, it will be difficult to breathe after wearing them. People are unwilling to wear them for a long time, and children The mask resistance meeting will cause irreversible damage to children's lungs. According to the filtration tests of children's masks from several manufacturers in the market, the material filtration rate is not high, and they have not provided the necessary protection.

The third defect is that the mask is opaque, not small, and covers most of the face. It is unsightly and stuffy. People are unwilling to wear it for a long time. Many people in the United States even refuse to wear a mask.

In addition to the theoretical filtering effect of the material itself is not high clean, and due to the serious air leakage rate, the actual comprehensive filtering effect of the existing masks is not good

In addition, the medical masks and medical surgical masks in the prior art have to be discarded every time they are worn for 4 hours due to the large electrostatic loss and the filtration efficiency is seriously reduced. However, people rarely replace them with new masks after wearing them for 4 hours. The filtration efficiency of the mask worn is seriously insufficient, and the risk of being infected by the virus is high

[0003] Currently known filters are bulky and are mainly used for indoor filtration and are not suitable for carrying around with human breathing

In addition, currently known filters have limited filtration efficiency, and can only perform clean filtration on the air, but cannot perform high-clean filtration on the air.

Especially for the filters in the known field, the high sealing between the filter material, the container and the pipeline is difficult to be guaranteed, and the risk of virus leakage is high.

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