• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A RESPIRATOR WITH A CIRCULATION OF A RESPIRATORY AIR containing a respiratory mask, a cylinder with a compensating gas — compressed air, communicated by a trunk through an adjusting valve with a respiratory circuit of a respirator, an oxygen blister, on the main lines of which is installed an electrical measuring sensor of oxygen content, as well as a regenerative cartridge mounted on a breathing circuit mounted on an oxygen meter, and a regenerative cartridge mounted on a circuit on a circuit mounted on an air line mounted on an oxygen meter, and a regeneration cartridge mounted on a panel on a circuit mounted on a panel on a circuit mounted on a panel on a circuit mounted on an oxygen line, mounted on an oxygen line, mounted on an oxygen meter, and also a regeneration cartridge mounted on a line on a breathing circuit of the respirator. and communicated with a carrying bag, characterized in that, in order to improve the performance characteristics by preventing the leakage of oxygen Yes, and to simplify the design of the supply line: compensation gas of compressed air, the regulating valve is made in the form of a lung diaphragm automat, the oxygen cylinder line is connected to the submembrane cavity of the automaton, and the compressed air line is connected to the pressure chamber of the automaton, while the compressed air line is connected by a connecting pipe with a switching valve communicated with the oxygen system) native line, the valves of cylinders of compressed air and oxygen are connected by a common actuator, and respiratory .izbytochnogo bag provided with a spring pressure, wherein in the connecting line contains a check valve communicating MASP gistral oxygen cylinder with air supply line. (;about
    公开号:SU1151194A3
    申请号:SU823520653
    申请日:1982-12-10
    公开日:1985-04-15
    发明作者:Варнке Эрнст
    申请人:Дрегерверк Аг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to respiratory protection, namely, apparatus with both open and closed circuits, providing in each phase of the respiratory process a slight overpressure relative to the environment. A respirator is known in which the contour of the respiratory air is formed by a breathing bag, a cartridge with a carbon dioxide absorber, as well as inspiration and expiratory hoses connected to a protective mask or a diving helmet. In such a closed circuit, an inert gas is supplied from the compensation gas cylinder through an automatically controlled pressure valve if the pressure difference between the breathing bag and ambient medium increases with decreasing ambient pressure, for example during immersion, and the breathing gas volume in the breathing bag decreases as a result of increasing ambient pressure. and insufficient to fill the lungs. Oxygen enters the breathing bag from the oxygen cylinder through the pressure regulator and the control valve. The oxygen line is controlled using a sensing element, which is located in the breathing bag or in the ma. gistral inhaled air. Oxygen is supplied all the time depending on its consumption Cll. In the known device, there is no regulation of the supply of the compensation gas, as well as the magnitude of the overpressure relative to the external pressure. In addition, the compensation gas (in this case, inert) will decrease the oxygen concentration for breathing, depending on the depth of immersion. Compensation requires complex regulation. The closest to the proposed one is a respirator containing a breathing mask, a container with a sensation gas — compressed air, communicated by a line through an adjusting valve with a respiratory circuit of a respirator, an oxygen cylinder, on the magistral: And which has an electrical and oxygen sensor installed, as well as a regenerative cartridge mounted on the latch line and communicated with the breathing bag 12J. In the known construction, there is also no regulation of the supply of a compensation gas (neutral gas, for example nitrogen or helium) at the inspiratory stage. Compensation gas is supplied to the breathing bag, depending on the immersion depth, in such a quantity that the bag remains pressurized. In addition, the possibility of an excess oxygen supply is not excluded, which can be dangerous, for example, when extinguishing a fire. The purpose of the invention is to improve the performance characteristics by preventing oxygen leakage and simplifying the design of the compensation gas supply line - compressed air. This goal is achieved by the fact that in a device containing a respiratory mask, a cylinder with a compensating gas is compressed air, a communication line through a control valve with a respirator circuit, an oxygen cylinder, on the line of which an electric measuring oxygen sensor is installed, as well as a regenerative cartridge installed on the outlet line and communicated with the breathing bag, the regulating valve is made in the form of a pulmonary membrane automaton, an oxygen cylinder line connecting The compressed air line is connected to the pressure chamber of the automaton, while the compressed air line is connected via a connecting line With the switching valve communicating with the oxygen line, the valves of the compressed air and oxygen cylinders are connected by a common driving device, and the breathing room is equipped with an overpressure spring, at the same time, a check valve is installed in the connecting line, which informs the line of the oxygen cylinder with the line of compressed air. FIG. 1 is a schematic diagram of a respirator; FIG. 2 connection between oxygen supply systems and air. The respirator contains a respiratory mask 1, connected by a hose 2 of the vtstsokha through a non-return valve 3 with a regenerative cartridge 4 and further with a connecting line 5c breathing 31 bag 6, At the outlet of the breathing bag 6 an electrical oxygen measuring sensor 7 is installed. A pulmonary automaton 8 is installed behind the breathing bag 6, while the breathing bag 6 is connected through the submembrane cavity 9 of the pulmonary automat and the check valve 10 by means of a breath hose 1 to the breathing mask Oxygen cylinder 12 through valve 13, gearbox 14 is connected by means of the oxygen cylinder 15 to the submembrane the cavity 9 of the pulmonary automaton 8. At the same time, a metering device 16 is installed on the main line 15, which is located in front of the shut off valve; 17. The electric measuring sensor 7 of the oxygen content is connected to the electronic device 18 through the control device 19 is connected to the shut-off valve 17. A compressed air compensating gas cylinder 20 through a valve 21 and a gearbox 22 by a compressed air line 23 is connected to the pressure head 24 of the automatic machine 8, communicated with the submembrane cavity 9 through the valve 25. Breathing bag 6 is provided with an overpressure spring 26. The wound 27 of the pulmonary automaton 8 is spring loaded by a spring 28. The valves of oxygen cylinders 12 and compressed air 20 are connected by a common drive device 29. Compressed air line 23 with a separating line 30 with switching valve 31 is connected to line 15 of an oxygen cylinder B of the connecting line 30 is inverse valve 32, which connects the main line 15 of the oxygen cylinder with the line 23 of compressed air and prevents the flow of compressed air into the line of the oxygen cylinder. The circulation circuit of the apparatus can be equipped with a safety valve 33 mounted on the hose 2 of the hose. The device works as follows. From breathing mask 1 exhaled air through the hose. 2 exhalations through the return valve 3 enters the regenerative cartridge 4. and further on connect 4. 4 of the carrier line 5 into the breathing bag 6. The inhaled air is taken from the breathing bag 6, passes by the electrical measuring sensor 7 of the oxygen content through the submembrane cavity of the 9th automatic machine 8, the check valve 10 and the inspiratory hose 11 into the breathing mask 1. The oxygen is supplied from oxygen cylinder 12, from where oxygen through valve 13, gearbox 14 and line 15 is supplied to dispenser 16. Oxygen can be dosed periodically, for example, between 3, 5 and 4 l / min, which, when constantly turned on, ensures Vaeth any possible demand for oxygen. The electrical measuring sensor 7 receives a signal to the electronic device 18 of the limit values and the control device 19, as a result of which the shut-off valve 17 with the metering device 16 at a low oxygen demand is switched off from time to time. Dosed oxygen through line 15 of the oxygen cylinder enters the circulation loop of the apparatus. The compressed air cylinder 20 is supplied with compressed air, which through the valve 2t and the reducer 22 through the compressed air line 23 enters the pressure chamber 24 of the automatic machine 8 and when the valve 25 is opened enters the breathing circuit. When the breathing mask 1 fits snugly and the circuit is sealed, a pressure occurs in the circuit relative to the ambient air, which is determined by the force of the overpressure spring 26 and the spring 28, which acts on the membrane 27 of the pulmonary automaton 8. This pressure is higher than the ambient pressure, thereby ensuring that in case of leaks, the air moves only from the inside to the outside. When this pressure is reached, the membrane 27 returns to its original position, overcoming the force of the spring 28, resulting in a valve 25 8 of the machine is returned to its original position and air from entering the pressure chamber 24 prershaets. If the breathing air escapes from the circulation circuit and this can no longer be compensated for from the volume of the breathing bag 6, the pressure in the circuit decreases and under the effect of the force of the spring 28, the valve 25 opens enough to cover the inhalation volume. The injected air then passes through the hose 2 through the regenerative cartridge 4 and through the connecting main 5 into the breathing bag 6, which is stretched to overcome the resistance of the spring 26. After this, a higher overpressure occurs in the circuit. The rotor also acts on the diaphragm 2 7, so that the valve 25 of the automatic circuit breaker 8 is closed again. In the inhaled air, the initial oxygen content is 21%, due to the consumption of oxygen during breathing, it drops to a value below 20%, with the result that the oxygen measuring sensor 7, which is sensitive to oxygen, gives a signal to the electronic controller 18 values. Due to this, the control device 19 is actuated and the shut-off valve 17 opens the metering device 16. Thus, via the oxygen cylinder 15, a constant dose of oxygen enters the circuit until a maximum value of 24 or 25% is reached. Since such a dosing of oxygen in the normal case covers the need for a more or less long opening of the dosing unit, there is always enough gas in the breathing bag for the next Breaths to cover the inspiratory volume. In this case, therefore, the valve 25 of the pulmonary machine 8 does not enter into action. However, if losses occur due to leaks through the breathing mask 1 while simultaneously consuming oxygen, then, under the known conditions, the volume contained in the breathing bag 6 may not be enough to fill the lungs during the next breaths. As a result, the conveying bag 6 is empty, the spring 26 is strongly expanded and the overpressure in the circuit drops. As a result, the pressure on the membrane 27 in the submembrane cavity 9 of the pulmonary machine 8 also drops, the spring 28 moves the valve 25 in the direction of opening, thanks What is the compressed air through the compressed air line 23 enters the circuit until the volume necessary for breathing is fully restored Such an actuation of the valve 25 of the pulmonary automatic machine 8 is, therefore, an audible sign that there are losses due to some leaks through the pressure mask 1. In this case, you can tighten the mask straps. If, for any reason, the electronic regulation of metering 7, 18, 19 and 17 has failed, the worker can turn on the switching valve 31 with a manual drive. By opening the connecting line 30 by turning on the switching valve 31, respiratory gas is supplied through the valve 25 of the pulmonary automatic machine 8 now from the oxygen cylinder 12, while simultaneously closing the compressed air line 23. The electronically controlled shut-off valve 17 can be designed in such a way that when it leaves the electronics, the open position is kept: the dosing in this case becomes continuous. Thus, the worker has at his disposal sufficient time to exit the danger zone, however, an increased oxygen content is established in the circuit, therefore, the fire extinguishing work must be stopped. The safety valve 33 provides for the correction of circulating air pressure in case of an accidentally too high pressure increase in the circuit, which may occur, for example, if the metering device does not shut down in the event of electronics failure, or if the valve 25 of the automatic pressure switch 8 stops in the open position. It is advisable for the described device to choose containers for compressed gas and oxygen, respectively, with a ratio of the volumes of gases of approximately 1: 4. For an apparatus designed for 2 hours, it is possible in this case for a compressed oxygen to have a 1.2-liter bottle filled under a pressure of 200 bar, i.e. the oxygen supply is 240 liters, and for air -. 0.3 l cylinder filled under pressure
    权利要求:
    Claims (1)
    [1]
    RESPIRATOR WITH RESPIRATORY AIR CIRCULATION, containing a breathing mask, a cylinder with compensating gas - compressed air, communicated by the line through the control valve with the respiratory circuit of the respirator, an oxygen cylinder, on the line of which there is an electric measuring oxygen content sensor, as well as a regenerative cartridge mounted on the line exhalation and communicated with the breathing bag, the only reason is that, with ijenwo improve performance by preventing oxygen leakage simplification of the design of the supply line: compensation gas of compressed air, the control valve is made in the form of a pulmonary membrane machine, the oxygen cylinder line is connected to the submembrane cavity of the machine, and the compressed air line is connected to the pressure chamber of the machine, while the compressed air line is connected to the switching line with a switching valve with the oxygen line, the valves of the cylinders of compressed air and oxygen are connected by a common drive device, and the breathing bag is equipped with an overpressure spring, while a check valve is installed in the connecting line, which communicates the line of the oxygen cylinder with the line of compressed air.
    <"SU wL 151194
    类似技术:
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    同族专利:
    公开号 | 公开日
    GB2114007A|1983-08-17|
    FR2520237A1|1983-07-29|
    PL239800A1|1983-08-29|
    GB2114007B|1985-08-29|
    FR2520237B1|1986-03-07|
    SE448519B|1987-03-02|
    PL133354B1|1985-05-31|
    JPS58133264A|1983-08-08|
    DE3202638A1|1983-08-18|
    SE8206078L|1983-07-29|
    SE8206078D0|1982-10-26|
    US4498470A|1985-02-12|
    引用文献:
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    US4974585A|1989-04-19|1990-12-04|Cis-Lunar Development Laboratories|Breathing apparatus gas-routing manifold|
    DE3930362C2|1989-09-12|1991-09-26|Draegerwerk Ag, 2400 Luebeck, De|
    US5537995A|1990-04-03|1996-07-23|Den Norske Stats Oljeselskap A.S.|Breathing system having breathing bag and supplemental gas dosing controls|
    US5036841A|1991-02-22|1991-08-06|Computer Assisted Engineering|Self contained closed circuit breathing apparatus|
    JPH07553A|1993-06-01|1995-01-06|Litton Syst Inc|Regulator for built-in type breathing device|
    DE4411560C1|1994-04-02|1995-08-03|Auergesellschaft Gmbh|Chemical oxygen@ supply equipment|
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    NZ552009A|2006-01-24|2007-10-26|Devx Tech Ip Ltd|Hypoxic training apparatus with gas supply from primary, secondary and tertiary sources|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19823202638|DE3202638A1|1982-01-28|1982-01-28|RESPIRATORY DEVICE WITH BREATHING AIR CIRCUIT|
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