초록 ▼

A compressed air respirator with prolonged operating time due to rebreathing. The compressed air reservoir includes a compressed air reserve with a connected demand air supply valve, a reversible breathing gas reservoir (4) with a registering device (5) detecting the filling level of the breathing g

A compressed air respirator with prolonged operating time due to rebreathing. The compressed air reservoir includes a compressed air reserve with a connected demand air supply valve, a reversible breathing gas reservoir (4) with a registering device (5) detecting the filling level of the breathing gas reservoir (4), and with an inspiration and expiration line (7, 8) for the user of the apparatus. A valve (6) is connected with the inspiration and expiration line (7, 8) and, on the inlet side, with the compressed air reserve (1) with a demand air supply valve (2) and with the breathing gas reservoir (4) and, on the outlet side, with the ambient air (11) and with the breathing gas reservoir (4). The valve means (6) is cyclically reversed by the registering device (5) in two phases such that depending on the filling level of the breathing gas reservoir (4), the inspiration line (7) is first connected with the compressed air reserve (1) and the expiration line (8) with the breathing gas reservoir (4) during a first phase until the filling level of the breathing gas reservoir (4) reaches an upper reversing point for the valve means (6), so that the inspiration line (7) is connected with the breathing gas reservoir (4) and the expiration line (78) with the ambient air (11) during a second phase until the filling level of the breathing gas reservoir (4) reaches a lower reversing point for the valve means (6) and the latter is again reversed as in the first phase.

대표청구항 ▼

What is claimed is: 1. A compressed air respirator, comprising: a compressed air reserve with a connected demand air supply valve; a reversible breathing gas reservoir with a registering means detecting the filling level of said breathing gas reservoir; an inspiration and expiration line for the us

What is claimed is: 1. A compressed air respirator, comprising: a compressed air reserve with a connected demand air supply valve; a reversible breathing gas reservoir with a registering means detecting the filling level of said breathing gas reservoir; an inspiration and expiration line for the user of the respirator; an admission line; a discharge line; another valve connected to said inspiration and expiration line and, on an inlet side, connected with said compressed air reserve with said demand air supply valve and connected with said breathing gas reservoir via said discharge line and, on an outlet side, connected with said breathing gas reservoir via said admission line and with ambient air, said valve being cyclically reversed by said registering means in two phases such that depending on a filling level of said breathing gas reservoir, said inspiration line is first connected with said compressed air reserve and said expiration line with said breathing gas reservoir via said admission line during a first phase until the filling level of said breathing gas reservoir reaches an upper reversing point for said another valve, so that the inspiration line is connected with said breathing gas reservoir via said discharge line and said expiration line with said ambient air during a second phase until the filling level of said breathing gas reservoir reaches a lower reversing point for said another valve and said another valve is again reversed as in the first phase. 2. A compressed air respirator in accordance with claim 1, wherein said another valve is designed as a rotary or slide type valve device. 3. A compressed air respirator in accordance with claim 1, wherein said another valve is bistable. 4. A compressed air respirator in accordance with claim 1, wherein said registering means has an electro-optical design. 5. A compressed air respirator in accordance with claim 1, wherein said registering means is in mechanical or electric functional connection with said another valve. 6. A compressed air respirator in accordance with claim 1, further comprising an electromagnet, wherein said another valve is in functional connection with said electromagnet. 7. A compressed air respirator in accordance with claim 6, wherein said electromagnet is connected with a control which receives measured signals from a gas volume flow sensor as a function of an apparatus user's breathing effort for controlling said another valve. 8. A compressed air respirator in accordance with claim 1, wherein said another valve is connected to said demand air supply valve via a connection line between said demand air supply valve and said another valve and further comprising a first line containing a first safety valve and is directly connected with said connection line between said demand air supply valve and said another valve, said first line branching off from said inspiration line, and a second line, which leads to said ambient air via a second safety valve, said second line branching off from said expiration line. 9. A compressed air respirator, comprising: a compressed air reserve with a connected demand air supply valve; a reversible breathing gas reservoir with a registering means detecting the filling level of said breathing gas reservoir; an inspiration line for the user of an apparatus and an expiration line for the user of the apparatus; a valve means having an inlet side and an outlet side, said valve means being connected to said inspiration line, connected to said expiration line, connected with said compressed air reserve via said demand air supply valve on said inlet side, connected with said breathing gas reservoir via an input line on said inlet side, connected with ambient air on said outlet side, and connected with said breathing gas reservoir via said output line on said outlet side, said valve means for cyclically reversing connections depending on a filling level of said breathing gas reservoir detected by said registering means, to first connect said inspiration line with said compressed air reserve and said expiration line with said breathing gas reservoir via said output line during a first phase until the filling level of said breathing gas reservoir reaches an upper reversing point for said valve means, so that the inspiration line is connected with said breathing gas reservoir and said expiration line with said ambient air during a second phase until the filling level of said breathing gas reservoir reaches a lower reversing point for said valve means and said valve means is again reversed as in the first phase. 10. A compressed air respirator in accordance with claim 9, wherein said valve means comprises a rotary or slide type valve device. 11. A compressed air respirator in accordance with claim 9, wherein said valve means includes a bistable device for shifting between the first phase and the second phase. 12. A compressed air respirator in accordance with claim 9, wherein said registering means has an electro-optical design. 13. A compressed air respirator in accordance with claim 9, wherein said registering means is in mechanical or electric functional connection with said valve means. 14. A compressed air respirator in accordance with claim 9, further comprising an electromagnet, wherein said valve means is in functional connection with said electromagnet. 15. A compressed air respirator in accordance with claim 14, wherein said electromagnet is connected with a control which receives measured signals from a gas volume flow sensor as a function of the apparatus user's breathing effort for controlling said valve means. 16. A compressed air respirator in accordance with claim 14, wherein said valve means is connected to said demand air supply valve via a connection line between said demand air supply valve and said valve and further comprising a first line containing a first safety valve and is directly connected with said connection line between said demand air supply valve and said valve means, said first line branching off from said inspiration line, and a second line, which leads to said ambient air via a second safety valve, said second line branching off from said expiration line. 17. A compressed air respirator, comprising: a compressed air reserve with a connected demand air supply valve; a reversible breathing gas reservoir with a registering means detecting the filling level of said breathing gas reservoir; an inspiration line for the user of an apparatus and an expiration line for the user of the apparatus; a reservoir input line; a reservoir output line; a valve means having an inlet side and an outlet side, said valve means being connected to said inspiration line, connected to said expiration line, connected with said compressed air reserve on said inlet side via said demand air supply valve, connected with said breathing gas reservoir on said inlet side via said reservoir input line, connected with ambient air on said outlet side, and connected with said breathing gas reservoir on said outlet side via said reservoir output line, said valve means for cyclically switching between a first connection arrangement and a second connection arrangement based on a filling level of said breathing gas reservoir detected by said registering means, said valve means connecting said inspiration line with said compressed air reserve and said expiration line with said breathing gas reservoir via said reservoir output line in said first connection arrangement until the filling level of said breathing gas reservoir reaches an upper reversing point for said valve means, said breathing gas reservoir receiving expired gas via said reservoir output line in said first connection arrangement, said expired gas including carbon dioxide, said valve means connecting said inspiration line with said breathing gas reservoir and said expiration line with said ambient air in said second connection arrangement until the filling level of said breathing gas reservoir reaches a lower reversing point for said valve means and said valve means again switches to said first connection arrangement, said inspiration line receiving said expired gas from said breathing gas reservoir in said second connection arrangement. 18. A compressed air respirator in accordance with claim 17, further comprising an electromagnet, wherein said valve means is in functional connection with said electromagnet. 19. A compressed air respirator in accordance with claim 18, wherein said electromagnet is connected with a control which receives measured signals from a gas volume flow sensor as a function of the apparatus user's breathing effort for controlling said valve means. 20. A compressed air respirator in accordance with claim 18, wherein said valve means is connected to said demand air supply valve via a connection line between said demand air supply valve and said valve and further comprising a first line containing a first safety valve and is directly connected with said connection line between said demand air supply valve and said valve means, said first line branching off from said inspiration line, and a second line, which leads to said ambient air via a second safety valve, said second line branching off from said expiration line.