CN2338037Y - Double airbag self-rescuer - Google Patents

Abstract

The utility model relates to a self life saving apparatus with double gas bags. The self life saving apparatus with double gas bags is characterized in that one gas storage bag is arranged on an exhalation gas path; one gas storage bag is arranged on an inspiration gas path; therefore, the utility model can comprises double gas bags which are an exhaling gas storage bag and an inhaling gas storage bag. The lower interfaces of the exhaling gas storage bag and the inhaling gas storage bag are respectively connected with the gas inlet end and the gas outlet end of an oxygen producing canister. The upper interfaces of the exhaling gas storage bag and the inhaling gas storage bag are respectively connected with the expiratory air one-way opening and the inspired air one-way opening of a respiratory valve. When the self life saving apparatus with double gas bags is worn for use by people, the exhaling air flow firstly enters the exhaling gas storage bag and then enters the oxygen producing canister. Therefore, the exhaling air flow can be buffered, and the peak of exhalation resistance can be reduced. When the gas inhalation is required, oxygen is inhaled from the inhaling gas storage bag arranged in the inspiration gas path. Thus, the respiratory resistance can be small. The exhalation resistance approaches to the inhalation resistance. Therefore, the self life saving apparatus with double gas bags conforms to the physiological requirement of the respiration of the human body. The inhalation temperature is reduced, and the comfort degree of the respiration of people who wear the self life saving apparatus with double gas bags is improved.

Description

Double airbag self-rescuer

The utility model relates to a protective equipment for the human respiratory system, in particular to a self-rescuer for self-generating oxygen.

The main structure of the existing self-generating oxygen type self-rescuer is all made up of an oxygen tank, an air storage bag, a breathing valve, a breathing catheter, mouthpieces and the like. The air storage bag is mainly used to collect and store oxygen when the person wears the self-rescuer to exhale, and to output and provide gas when inhaling. In the structure of the self-rescuer, only one air storage bag is installed at the rear end of the oxygen tank gas circuit. The way people wear self-rescue airflow is: when exhaling, the airflow passes through the mouthpiece, breathing catheter, breathing valve, and the medicine layer of the oxygen tank, and the water vapor and carbon dioxide in the exhaled breath are absorbed to generate oxygen and store it in the air storage bag; At the same time, the gas is output from the air storage bag and enters the human lungs through the breathing valve, breathing catheter and mouthpiece. In this cycle, the airflow always flows in one direction. Due to reasons such as the medicine layer of the oxygen tank and the filtration of the outflow gas, the peak value of exhalation resistance is always about one time greater than the peak value of inhalation resistance, which is very unfavorable to human respiratory physiology and easily causes fatigue of human respiratory muscles.

The purpose of this utility model is to provide a self-rescuer with double air storage bags, which can buffer the expiratory airflow, reduce the peak value of expiratory resistance, and make the peak value of exhalation resistance close to the peak value of inhalation resistance, and it is very small.

The purpose of this utility model is achieved in this way: the double air storage bag self-rescuer is equipped with an air storage bag at the inlet end and the air outlet end of the oxygen tank gas circuit, that is, an air storage bag is added on the exhalation air circuit, so that the exhaled air flow can be buffered , to reduce the peak expiratory resistance. In order to connect the air storage bag with the breathing valve and the oxygen generating tank, the exhaled gas one-way port and the inhaled gas one-way port of the breathing valve are separated and lengthened, and connected with the upper ports of the exhaled air storage bag and the inhaling air storage bag respectively; The air inlet end of the gas path is connected with the lower interface of the exhalation air storage bag, and the gas outlet end of the oxygen generating tank gas path is connected with the lower interface of the suction storage air bag.

Because the utility model adopts this structure, not only the breathing resistance is small, but also the exhalation resistance is very close to the inhalation resistance, which is more in line with the physiological requirements of human respiration, while the inhalation temperature is reduced, and the breathing comfort of the wearer is greatly improved.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is a structural sectional view of the utility model.

1. Oxygen tank 2. Oxygen tank outlet 3. Exhaust valve 4. Suction storage air bag 5. Breathing valve suction one-way port 6. Suction valve piece 7. Breathing valve 8. Mouthpiece 9. Breathing catheter 10. Exhalation valve sheet 11, exhalation valve exhalation one-way port 12, exhalation air storage bag 13, oxygen tank intake port

The oxygen generating tank 1 and the air inlet port 13 are connected to the lower interface of the exhalation air storage bag 12, the gas outlet 2 of the oxygen generating tank 1 is connected to the lower interface of the suction storage air bag 4, and the upper interface of the exhalation air storage bag 12 is one-way with the exhaled air of the breathing valve 7. The port 11 is connected, and the upper interface of the suction storage air bag 4 is connected with the one-way port 5 of the inhalation gas of the breathing valve 7 . The suction and storage air bag 4 is also equipped with an exhaust valve 3, which is used to remove excess gas when the oxygen production is large, so as to ensure that the internal pressure of the system will not be too high. The upper interface of the breathing valve 7 is connected with a breathing tube 9 and a mouthpiece 10, and the breathing valve 7 is equipped with an exhalation valve sheet 10 and an inhalation valve sheet 6 to control the flow direction of the air flow. Expiratory gas one-way mouth 11.

The airflow flow mode when people wear it is: when exhaling, the airflow passes through the mouthpiece 8, the breathing tube 9, the exhalation valve plate 10 on the respiration valve 7, the exhaled air one-way port 11, the exhaled air storage bag 12, and the oxygen-generating tank. The gas end 13 enters the oxygen generating agent drug layer of the oxygen generating tank 1, and the water vapor and carbon dioxide in the exhaled air are absorbed, and the oxygen produced enters the air storage air bag 4 from the gas outlet end 2 of the oxygen generating tank. When inhaling, the inhalation storage airbag 4 enters the human lung through the inhalation air one-way port 5 of the exhalation valve 7, the inhalation valve sheet 6, the breathing catheter 9, and the mouthpiece 8, and a breathing cycle is completed so far, and the process is repeated. until the end of wearing.

Claims (2)

1. A self-rescuer with double air storage bags is characterized in that: there is an exhalation air storage bag 12 on the exhalation air path, an inhalation air storage bag 4 on the inhalation air path, the lower interface of the exhalation air storage bag 12 is connected to the oxygen tank 1 The inlet port 13 is connected, and the upper port is connected with the exhaled gas one-way port 11 of the breathing valve 7; Port 5 is connected. 2. The double air storage bag self-rescuer according to claim 1, characterized in that: the exhalation valve 7 is equipped with an exhalation valve 10 and an inhalation valve 6, and the respiration valve 7 has an inhalation air one-way port 5, an exhalation air One-way port 11.

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