Gas filtering and exchanging device with dual-chamber structure

Abstract

Aiming at the problems, the invention provides a dual-chamber structure design. The dual-chamber structure design is suitable for a mask, a breathing mask and the like; the gas exchange efficiency is improved, and the asphyxia sensation during breathing is reduced while filtering purification of air can be realized; during inspiration, a one-way valve (7) is opened, a one-way valve (9) is closed, and gas as in a fresh air cavity (3) enters an exchange cavity (8) through the one-way valve (7) and further enters a respiratory system of a person; during expiration, the one-way valve (7) is closed, the one-way valve (9) is opened, and expired gas is quickly exhausted from the exchange cavity without reservation; in the expiring process, the one-way valve (7) is closed, and outside air continuously enters the fresh air cavity through a filter screen (1) by negative pressure generated in the fresh air cavity in the inspiration process; and clear air is supplemented and prepares for next inspiration, and the steps are repeated as above.

Description

technical field [0001] The invention relates to a gas filtration and exchange device with a double-chamber structure, which is suitable for the occasions of filtering and exchanging gas, such as masks, gas masks and other devices, and solves the problem of poor gas exchange performance and strong suffocation during the exchange process. question. Background technique [0002] The rapid development of society has also brought some environmental problems, such as air pollution. While people are more and more aware of the harm that air pollution brings to people's health, there are few means to overcome it. At present, when people travel in severe weather such as smog, they generally take protective measures such as wearing masks. There are many similar products on the market, and the principle is generally similar, that is, when inhaling, the dirty air passes through the filter layer of the mask to filter out harmful substances, such as PM2.5. However, due to the very small...

AI Technical Summary

Problems solved by technology

Another reason for the feeling of suffocation is that due to the existence of a large space near the nasal cavity, it will be filled with exhaled gas (hereinafter referred to as "turbid air") when exhaling. When inhaling again, these turbid gases containing high concentrations of carbon dioxide will It will be inhaled into the respiratory tract again, and the human body will have difficulty breathing due to the lack of fresh air.

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