一种基于氮氧引射器的循环呼吸器
By using a recirculating respirator based on a nitrogen-oxygen ejector, the problems of low oxygen utilization and large equipment size are solved by utilizing the oxygen and nitrogen supply system and the ejector's mixed gas supply and gas recycling, thus achieving equipment miniaturization and extended diving time.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-09-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing diving breathing apparatuses are mostly large air cylinders, which have low oxygen utilization rates, large equipment size, and are inconvenient to carry.
A recirculating respirator based on a nitrogen-oxygen ejector is used. Oxygen and nitrogen are stored in the oxygen supply system and nitrogen supply system respectively. After being mixed by the ejector, they are supplied to the oxygen mask, and the gas exhaled by the diver is recovered for recycling.
Reduce equipment size, increase oxygen carrying capacity, and extend diving time.
Smart Images
Figure CN224511428U_ABST
Abstract
Claims
1. A nitroxide-based ejector-based rebreather comprising a gas cylinder securing waist belt (1), characterized in that; It also includes an oxygen supply system (2) disposed on the surface of the gas cylinder fixing belt (1), an oxygen mask (3) disposed at the end of the oxygen supply system (2) away from the gas cylinder fixing belt (1), a nitrogen supply system (4) disposed on the surface of the gas cylinder fixing belt (1), the nitrogen supply system (4) being connected to the oxygen supply system (2), and a nitrogen recovery system (5) disposed at the output end of the oxygen mask (3), the nitrogen recovery system (5) being connected to the nitrogen supply system (4).
2. The nitric oxide based ejector based recycle respirator of claim 1, wherein, The surface of the gas cylinder fixing belt (1) is fixedly provided with multiple fixing brackets (13). The oxygen supply system (2) includes an oxygen cylinder (6) fixedly installed inside the fixing bracket (13). The output end of the oxygen cylinder (6) is connected to an oxygen supply pipe (7). The end of the oxygen supply pipe (7) away from the oxygen cylinder (6) is connected to an ejector (9). The middle part of the oxygen supply pipe (7) is provided with an oxygen pressure reducing valve (8) for adjusting the output pressure of the oxygen cylinder (6).
3. The nitric oxide based ejector based recycle respirator of claim 2, wherein, The nitrogen supply system (4) includes a nitrogen cylinder (10) fixedly installed inside the fixing frame (13). The output end of the nitrogen cylinder (10) is provided with a nitrogen supply pipe (11). The end of the nitrogen supply pipe (11) away from the nitrogen cylinder (10) is connected to an electromagnetic three-way valve (14). The output end of the electromagnetic three-way valve (14) is connected to a nitrogen return pipe (15). The end of the nitrogen return pipe (15) away from the electromagnetic three-way valve (14) is connected to an ejector (9).
4. The nitric oxide based ejector based recycle breather of claim 3, wherein, The oxygen mask (3) is provided with a three-way pipe (18) at its input end. One end of the three-way pipe (18) is connected to the output end of the ejector (9). A one-way valve is provided at the connection between the ejector (9) and the oxygen mask (3). The one-way valve can only supply air to the inside of the oxygen mask (3).
5. The nitric oxide based ejector based recycle respirator of claim 4, wherein, The nitrogen recovery system (5) includes a gas recovery pipe (16) connected to the oxygen mask (3). A one-way valve is provided at the connection between the gas recovery pipe (16) and the oxygen mask (3). The one-way valve can only release gas from the inside of the oxygen mask (3). The end of the gas recovery pipe (16) away from the oxygen mask (3) is connected to the input end of the electromagnetic three-way valve (14). A carbon dioxide adsorber (17) is provided in the middle of the gas recovery pipe (16).
6. The nitric oxide based ejector based recycle respirator of claim 5, wherein, The oxygen pressure reducing valve (8) and nitrogen pressure reducing valve (12) are adjustable pressure valves, and the ejector (9) is an adjustable ejector.