Mouth and nose divided double-chamber double-cover mask

Abstract

A mouth and nose divided double-chamber double-cover mask is provided with a nose covering body, a mask rope, a filtering device, a mouth covering body, a first one-way valve, a second one-way valve, a third one-way valve, a first chamber with a dead chamber, a second chamber with a dead chamber, a third chamber with a breathing air inlet channel, nostril breathing channels which are arranged on the first chamber and communicated with the dead chamber and a mouth breathing channel which is arranged on the second chamber and communicated with the dead chamber; the filtering device is arranged inside the breathing air inlet channel of the third chamber or is communicated with the breathing air inlet channel of the third chamber; a lower end opening of the third chamber and an upper end opening of the first chamber are in sealing connection; a lower end opening of the first chamber and an upper end opening of the second chamber are in sealing connection; ventilation holes of a pair of nose stoppers on the nose covering body are communicated with the nostril breathing channels; the ventilation holes in the mouth covering body are communicated with the mouth breathing channel. The mouth and nose divided double-chamber double-cover mask can protect a human breathing system comprehensively, reduce the dead chambers to some extent and increase mask wearing comfort.

Description

technical field [0001] The invention relates to a breathing filtering device, in particular to a double-cavity and double-shield respirator with mouth-nasal diversion. Background technique [0002] Ordinary masks have a dead space, and most of them cover the mouth and nose. If you want to speak clearly, you must take off the mask. Sometimes I wear glasses, and there is a mask on the bridge of the nose, and the glasses can't be worn securely. CN202857909U discloses a novel breathing shunt health mask, which is characterized in that a breathing shunt device is set on the mask main body. CN2614068Y discloses an exhalation and inhalation shunt protector (mask), which can divert the exhalation and inhalation process in the appliance, preventing the wearer from exhaling heat, moisture, exhaust gas, bacteria, nasal saliva, etc. In addition to the accelerated pollution of the device itself, the bacteria exhaled by the wearer will not be discharged outside the device, so it can eff...

AI Technical Summary

Problems solved by technology

The above technologies have not given specific guidance on how to make the mask fully protect the human respiratory system and reduce the dead space to a large extent

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