Respirator

Abstract

The invention relates to a respirator with a compressed air source (2), with a compressed air source valve (4), a breathing regulator (6), which is connected to the compressed air source valve and which has a pressure reducer and a demand valve, a respirator mask (10), which is connected at a first inlet attachment (11) to the demand valve, a second air source (14), which can either be connected to a second inlet attachment (12) of the respirator mask or is connected to an attachment with direct connection to the demand valve, a switch mechanism (20, 22; 21, 22) with an actuator (20; 21) for switching between compressed-air breathing from the compressed air source via the demand valve or from the second air source, an exhalation valve (30) on the respirator mask, which exhalation valve (30) is adjustable between a first and a second operating state, the internal pressure in the respirator mask being higher in the second operating state than in the first operating state, wherein the actuator (20; 21) of the switch mechanism (20, 22; 21, 22) is provided on the breathing regulator (6), the switch mechanism being designed such that, when switched to compressed-air breathing, it activates the demand valve and sets the exhalation valve (30) to the second operating state and, when switched to breathing via the second air source (14), it deactivates the demand valve and sets the exhalation valve (30) to the first operating state.

Description

technical field [0001] The present invention relates to a respiratory protective device comprising: a compressed air source with a compressed air source valve; a breathing regulator connected to the compressed air source valve, the breathing regulator having a pressure reducer and a heart-lung machine; a respiratory protective cover, the The breathing shield is connected (directly or via a hose) to the heart-lung machine; a second air source is connected either to the second inlet port of the breathing shield or to an interface directly connected to the heart-lung machine; with regulation The switching mechanism of the mechanism, the operation of which regulates the switching between breathing with compressed air from a source of compressed air via a heart-lung machine and breathing from a second source of air: the exhalation valve connected to the breathing shield, the exhalation The valve can be adjusted between a first and a second operating state, wherein in the second ope...

AI Technical Summary

Problems solved by technology

This has the disadvantage that pressure builds up in the pneumatic system of the respiratory protective device only when compressed air is actually required to breathe, and the pressure is not fully or failed to build up in the pneumatic system of the respiratory protective device because the compressed air source valve behind Faults caused by a faulty function of the

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