Method and device for insulating the face of person from the external environment including harmful gas

Abstract

A method for separating face from outer harmful gas comprises that (1), setting a separating space at the face, (2) forming a wind curtain at the separating space to insulate outer harmful gas from face. And the device comprises a helm covering the head with an opening at the front of the face, a bar wind outlet downward at the top side of the opening, and a wind channel in the interlayer of the helm and communicated with the wind outlet, while the wind channel via a tube is communicated with a pressure source outside the helm. The invention uses the wind curtain to insulate face from harmful gas outside, to insulate harmful gas from breath system, without affecting vision and view sight.

Description

technical field

[0001] The invention relates to a wearable respiratory system protection device, in particular to a method and a device for isolating the face of a human body from the harmful gas environment outside. Background technique

[0002] Wearable respiratory system protection device mainly refers to the mask or helmet that isolates the human respiratory system and head organs from the external harmful gas environment, and is widely used in factories, mines and other harmful gas environments. Such masks or helmets usually have a seal that forms a cavity at the wearer's nose and mouth, and outside air enters the cavity after being purified by a filter. The seal is used to isolate harmful air from the surrounding environment, preventing it from entering the chamber and being inhaled by the wearer into the lungs, and the filter is used to remove harmful components in the air so that the wearer can breathe harmless air. Moreover, this kind of helmet or face shield is pr...

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