CN210505569U - Tandem type oxygen generator - Google Patents
Tandem type oxygen generator Download PDFInfo
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- CN210505569U CN210505569U CN201920994961.7U CN201920994961U CN210505569U CN 210505569 U CN210505569 U CN 210505569U CN 201920994961 U CN201920994961 U CN 201920994961U CN 210505569 U CN210505569 U CN 210505569U
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Abstract
The utility model relates to a serial oxygen generator, which is characterized in that perforated tablets made of oxygen generating candles are sequentially connected in series and threaded on a metal wire, and the metal wire is bent into a certain shape to form a continuous tablet group as a main gas generating component. Because the tablet group has the characteristics of small diameter and long length, the low-flow and long-time oxygen supply can be ensured under the condition of low weight and volume. The solid oxygen generator overcomes the defects of large volume, heavy weight, short oxygen supply time, inconvenient carrying and use and the like of the existing solid oxygen generator, has the advantages of small volume, light weight, long oxygen release time, convenient carrying and use, long service life, 60 minutes service life and the like, and is suitable for underground mining operation of mines, coal mine work, plateau operation and mountain climbing personnel.
Description
Technical Field
The utility model relates to a serial-type oxygen generator, more specifically relate to a plurality of oxygen generators of tablet group that press into the oxygen candle tablet series connection that foraminiferous small tablet form and form together, belong to the oxygen preparation field.
Background
Most of the oxygen candles on the market supply oxygen by burning a single oxygen candle, and the disadvantages of the oxygen candles include large flow rate, short oxygen supply time, large heat productivity, large residual amount of heat and the like due to the volume and weight of the oxygen generator.
In underground mining operation of mines, plateau operation and mountain climbing personnel, portable oxygen supply equipment is needed, the size is small, and more oxygen can be supplied. The existing solid oxygen generator has the defects of large volume, heavy weight, short oxygen supply time, inconvenient carrying and use and the like. How to provide more oxygen candles under the condition of limited volume so as to improve the oxygen supply time is a technical problem to be solved urgently in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, and provides a serial solid oxygen generator, which overcomes the characteristic of short combustion time of the traditional solid oxygen generator.
The utility model discloses the purpose is realized through following technical scheme:
a tandem oxygen generator is provided, comprising an oxygen generating tablet group, a metal wire, a shell component, an ignition component and a filter layer;
an oxygen-producing tablet set for oxygen production, comprising a plurality of tablets having a through-hole in the middle; the metal wire is bent into a spring shape, and one end of the metal wire is taken as a leading-out end and led out to an ignition end of the ignition component; the metal wire penetrates through the through holes of the tablets, so that the tablets are continuously connected in series and cover the metal wire;
the shell assembly is used for limiting the metal wires connected with the tablets in series, installing the filter layer and the ignition assembly and arranging a gas outlet for discharging gas;
when the ignition assembly is used, the oxygen generating tablet group is ignited, the oxygen generating tablet group continuously burns along the metal wire to release oxygen, and the oxygen is discharged from the gas outlet after being subjected to gas purification through the filter layer.
Preferably, a heat insulating material is arranged between the oxygen generating tablet group and the shell assembly.
Preferably, the tablet is cylindrical, spherical, capsule-like or rectangular parallelepiped in shape.
Preferably, the metal wires are iron wires or copper wires, and the number of the metal wires is 1 or more than 1.
Preferably, the shell is cylindrical, rectangular or square, and is made of stainless steel.
Preferably, the heat insulation material is vermiculite, ceramic aluminum fiber cotton or silicon dioxide aerogel.
Preferably, the shell assembly comprises a shell, a lower cover, an upper cover, a top cover, an upper supporting bowl, a lower supporting bowl and a check ring; the two ends of the shell are opened, the upper cover is fixed to the top end of the shell and provided with an air outlet, and a pressure release valve is installed on the upper cover; the air outlet is mainly used for exhausting air; the pressure relief threshold is used for pressure relief; the lower cover is fixed to the bottom end of the shell, and a through hole is formed in the middle of the lower cover for mounting an ignition assembly; the upper supporting bowl and the top cover are round panels, the size of the upper supporting bowl is matched with the inner diameter of the shell, and the lower supporting bowl is a round plate and is provided with a flanging; the top cover is fixed at the top end of the shell, the upper support bowl is fixed at the middle upper part of the shell, and the top cover and the upper support bowl form an accommodating space for accommodating the filter layer; the lower supporting bowl is fixed at the bottom of the shell, and a metal wire for connecting tablets in series is arranged between the upper supporting bowl and the lower supporting bowl for axial limiting; the upper supporting bowl and the lower supporting bowl are welded with check rings and used for radially limiting the metal wires of the serially connected tablets.
Preferably, the ignition assembly comprises an electronic igniter and an igniter retainer; the igniter is fixed through the igniter fixing piece, the lower end of the igniter fixing piece penetrates through the through hole of the lower cover, and the lower supporting bowl is propped against the upper end of the igniter fixing piece so as to position the igniter fixing piece; the metal wire leading-out end is connected to the ignition end of the igniter along the axial direction of the shell.
Preferably, the upper cover is provided with an air outlet, the air outlet is provided with an air outlet spring and an air outlet one-way valve, when the pressure is greater than the minimum air outlet pressure of the air outlet spring, oxygen passes through the air outlet one-way valve to be exhausted in a one-way mode, and external air cannot enter the series oxygen generator.
Preferably, the upper cover is provided with a pressure release valve which comprises a pressure release spring and a pressure release one-way valve, when the pressure of the air outlet of the pressure release spring is greater than the pressure of the air outlet of the pressure release spring due to the accident, the air is exhausted in one way through the pressure release one-way valve, and the external air cannot enter the series oxygen generator.
Preferably, the shell assembly comprises a shell, an upper cover, a top cover, an upper support bowl, a lower support bowl, a check ring and a fixed pipe; the upper end of the shell is provided with an opening, the upper cover is welded to the top end of the cylindrical shell, the upper cover is provided with an air outlet, and a pressure release valve is installed; the middle of the upper cover is provided with a through hole for installing an ignition assembly; the upper supporting bowl and the top cover are circular panels, the size of the upper supporting bowl is matched with the inner diameter of the shell, and the lower supporting bowl is a cylindrical sleeve; the top cover is fixed at the top end of the shell, the upper support bowl is fixed at the middle upper part of the shell, a fixed pipe is longitudinally arranged in the middle of an accommodating space formed by the top cover and the upper support bowl, and a filter layer is arranged outside the fixed pipe; the lower supporting bowl is fixed at the bottom end of the shell, and a metal wire connected with tablets in series is placed between the upper supporting bowl and the bottom end of the shell for axial limiting; the upper supporting bowl is welded with a check ring, and the check ring and the lower supporting bowl are used for radially limiting the metal wires of the serially-connected tablets.
Preferably, the ignition assembly comprises an ignition pin and a mechanical impact igniter; the mechanical impact type igniter penetrates through the through holes of the upper cover and the top cover to be fixed, the excitation pin is arranged on the mechanical impact type igniter and is exposed outside the upper cover; the mechanical impact type igniter is in mechanical fit riveting with the top cover and the fixed pipe, and the sealing performance is guaranteed.
Compared with the prior art, the utility model have following advantage:
(1) the utility model discloses a serial-type oxygen generator has realized the requirement of long-time oxygen suppliment, is applicable to the operational requirement of low flow, long-time oxygen suppliment very much, like the mining operation in the pit of mine, plateau operation, the long work of operating time such as mountain-climbing, has fine market prospect.
(2) The utility model discloses a serial-type oxygen generator surface temperature is low, because the low flow oxygen suppliment, and it is very low to produce required heat and the temperature of oxygen tablet decomposition, and in addition the separation of thermal insulation material, can reduce surface temperature by a wide margin with traditional oxygen generator, reduces volume and weight.
(3) The serial oxygen generator of the utility model has small volume, long oxygen supply time, length of 240mm and diameter of 130mm, and the oxygen supply time of the oxygen generator can reach 1 hour.
(4) The utility model discloses a tablet is established ties to the wire, can preheat subsequent tablet in advance through the wire, has guaranteed the continuity of burning.
Drawings
FIG. 1 is a schematic structural view of a first embodiment of a tandem type oxygen generator according to the present invention;
FIG. 2 is a schematic structural view of a second embodiment of a tandem type oxygen generator according to the present invention;
wherein 1, an air outlet; 2. a pressure relief valve; 3. an upper cover; 4. the top cover 5 is a filter layer; 6. a housing; 7. mounting a bowl; 8. a retainer ring; 9. iron wires; 10. a tablet group; 11. a thermal insulation material; 12. a bowl is held down; 13. an electronic igniter; 14. a lower cover; 15. an igniter retainer; 16. a copper wire; 17. an energizing pin; 18. a mechanical impact igniter; 19. and fixing the tube.
Detailed Description
A series oxygen generator is provided, wherein a plurality of tablets with holes made of oxygen candle formula are serially connected on a metal wire, the metal wire is bent into a certain shape, such as a spring shape, to prepare a thin and long tablet group, the tablets are ignited from one end of the tablet group, and the flame is transmitted from one end to the tail end of the tablet group in order, thereby carrying out long-time and low-flow oxygen supply. The upper and lower supporting bowls fix the tablet group, and the generated oxygen is purified by the filter layer and then discharged from the air outlet for breathing of people. And arranging a heat insulating material which is mainly in a loose porous structure and is used for keeping internal heat not to dissipate and reducing the temperature of the shell, wherein vermiculite, ceramic aluminum cellucotton, silicon dioxide aerogel and the like are commonly used. The material of the wire is a common metal. The number of the metal wires is one or more. The bent shape can be in various shapes, so that the tablet group can be continuously and orderly burnt, and the tablet group is usually in a spring shape.
Example 1
As shown in FIG. 1, the in-line solid oxygen generator comprises an oxygen generating tablet group 10, an iron wire 9, a shell component, an electronic igniter 13, an igniter fixing member 15, a heat insulating material 11 and a filter layer 5.
The oxygen generating tablet group 10 comprises a plurality of tablets, the tablets are cylinders with the length of 1cm and the diameter of 1cm or cubes or other cuboid shapes with the length of 1cm and the side length of the section of 1cm in the positive direction of 1cm, and through holes are formed in the middle; the iron wire 9 is bent into a spring shape, and one end of the iron wire is a leading-out end along the axial direction of the spring. Tablets 10 are threaded over wire 9, distributed throughout the wire, and tightly connected in series, the ingredients of which are common in the art of oxygen production tablets. The tablet composition is similar to conventional oxygen-generating candles and generates oxygen upon combustion, and the tablets are compressed into perforated tablets which are serially connected to a wire in sequence and form a shaped tablet set.
The shell component comprises a cylindrical shell 6, a lower cover 14, an upper cover 3, a top cover 4, an upper support bowl 7, a lower support bowl 12 and a check ring 8. Two ends of the cylindrical shell 6 are opened, the upper cover 3 is welded to the top end of the cylindrical shell 6, the upper cover 3 is provided with an air outlet 1, and the pressure release valve 2 is installed; the gas outlet 1 is mainly used for exhausting gas, a gas outlet spring and a one-way valve are arranged on the gas outlet, the gas outlet spring controls the minimum gas outlet pressure of the gas outlet spring, the gas outlet spring can only pass through the one-way valve to exhaust gas in a one-way mode, and external gas cannot enter the generator. The pressure release valve 2 is used for releasing pressure, comprises a pressure release spring and a pressure release one-way valve, and when the pressure of the air outlet of the pressure release spring is greater than the pressure of the air outlet of the pressure release spring due to the fact that accidents are prevented, the air is exhausted in a one-way mode through the pressure release one-way valve, and the external air cannot enter the series oxygen generator. The lower cover 14 is welded to the bottom end of the cylindrical housing 6, and a through hole is provided in the middle for mounting an igniter fixing member 15. The upper supporting bowl 7 and the top cover 4 are circular panels, the size of the upper supporting bowl and the size of the top cover 4 are matched with the inner diameter of the shell 6, the lower supporting bowl 12 is a circular plate and is provided with a flanging, and the upper supporting bowl 7, the lower supporting bowl 12 and the top cover 4 are fixed on the shell 6 through spot welding. The top cover 4 is fixed on the top end of the shell 6 in a spot welding mode, the upper supporting bowl 7 is fixed on the middle upper portion of the shell 6, and the top cover 4 and the upper supporting bowl 7 form an accommodating space for accommodating the filter layer 5. The lower support bowl 12 is fixed at the bottom of the shell 6, and an iron wire 9 and an oxygen generating tablet group 10 are arranged between the upper support bowl and the lower support bowl for axial limiting. The upper supporting bowl and the lower supporting bowl are provided with openings, so that smooth discharge of gas is ensured, and certain structuredness is also kept. The upper supporting bowl and the lower supporting bowl are welded with a retainer ring 8 and used for radially limiting the iron wire 9 and the oxygen generating tablet group 10. Wherein, the oxygen generating tablet group 10 and the shell 6, the upper supporting bowl and the lower supporting bowl are filled by a heat insulating material 11, which mainly plays the roles of heat insulation and heat preservation. Here, the heat insulating material is vermiculite.
The igniter 13 and the igniter fixing piece 15 penetrate through the through hole of the lower cover 14, and the lower supporting bowl 12 supports against the igniter fixing piece 15 so as to position the igniter fixing piece and keep stability and coaxiality. The leading-out end of the iron wire 9 is connected to the ignition end of the igniter 13.
The filtering layer 5 is a commonly used filtering layer, and is composed of potassium hydroxide, lithium hydroxide, hopcalite, a molecular sieve, sodium peroxide and the like, and mainly has the functions of absorbing a small amount of carbon monoxide, carbon dioxide, chlorine and the like generated in the decomposition process of the oxygen-producing tablets and ensuring the purity and safety of the absorbed gas.
When the gas purifier is used, the igniter 13 is excited, the igniter 13 fires, the first tablet of the spring-shaped tablet group 9 connected in series is ignited, oxygen is decomposed and discharged, the oxygen continuously burns along the iron wire 9, the oxygen is continuously discharged under the protection of the heat insulating material 11, and the discharged gas is purified through the filter layer 5 and then is discharged from the gas outlet 1. After ignition, the iron wire is heated to preheat subsequent tablets in advance, so that the continuity of combustion is ensured.
Example 2
Fig. 2 is a structural sectional view of an embodiment of the present invention; in this embodiment, copper wire is used instead of iron wire, and mechanical impact type igniter is used for ignition. The series solid oxygen generator comprises an oxygen generating tablet group 10, a copper wire 16, a shell component, a heat insulating material 11, a filter layer 5, an excitation pin 17 and a mechanical impact type igniter 18.
The shell component comprises a cylindrical shell 6, an upper cover 3, a top cover 4, an upper support bowl 7, a lower support bowl 12, a check ring 8 and a fixed pipe 19. The upper end of the cylindrical shell 6 is opened, the upper cover 3 is welded to the top end of the cylindrical shell 6, the upper cover 3 is provided with an air outlet 1, and the pressure release valve 2 is installed. The upper cover 3 is provided with a through hole in the middle for mounting a mechanical impact igniter 18. The upper supporting bowl 7 and the top cover 4 are circular panels, the size of the upper supporting bowl is matched with the inner diameter of the shell 6, the lower supporting bowl 12 is a cylindrical sleeve, and the upper supporting bowl 7, the lower supporting bowl 12 and the top cover 4 are fixed on the shell 6 through spot welding. The top cover 4 is fixed on the top end of the shell 6, the upper support bowl 7 is fixed on the middle upper part of the shell 6, the top cover 4 and the upper support bowl 7 form an accommodating space, a fixing pipe 19 is longitudinally arranged in the middle of the accommodating space, and the filter layer 5 is arranged outside the fixing pipe. The lower support bowl 12 is fixed at the bottom end of the shell 6, and a copper wire 16 and the oxygen producing tablet group 10 are arranged between the upper support bowl and the bottom end of the shell 6 for axial limiting. The upper supporting bowl is welded with a retainer ring 8, and the retainer ring 8 and the lower supporting bowl are used for radially limiting the iron wire 9 and the oxygen generating tablet group 10. Wherein, the oxygen producing tablet group 10, the shell 6 and the upper support bowl are filled by a heat insulating material 11, and the heat insulating material is ceramic aluminum fiber cotton.
The upper cover 3 and the top cover 4 are provided with coaxial through holes, the mechanical impact type igniter 18 penetrates through the through holes of the upper cover 3 and the top cover 4 to be fixed, the excitation pin 17 is arranged on the mechanical impact type igniter 18 and is exposed outside the upper cover 3, and operation is facilitated. The upper cover 3 is welded on the shell 15, and the mechanical impact type igniter 2 is mechanically matched and riveted with the top cover 4 and the fixed tube 19, so that the sealing performance of low air pressure is ensured.
The fixing tube 19 is welded with the upper supporting bowl 7 and the retainer ring 8, and the integral structure of the fixing tube is used for fixing the tablet group together with the lower supporting bowl 12.
The lower supporting bowl and the upper supporting bowl are fixed on the shell through spot welding, and both the lower supporting bowl and the upper supporting bowl are provided with holes, so that smooth discharge of gas is guaranteed, and certain structuredness is also kept.
The filter layer is fixed through a top cover and an upper supporting bowl, and the top cover is also provided with an opening.
When the device is used, the excitation pin 17 is pulled to excite the mechanical ignition tool 18, the ignition tool 18 is ignited to ignite the first tablet in the shape of the tablet group connected in series, oxygen is decomposed and discharged and continuously combusted along the copper wire, the oxygen is continuously discharged under the protection of the heat insulation material 11, and the discharged gas is purified through the filter layer 5 and then discharged from the gas outlet 1. This way, ignition and outgassing from the same head can reduce the length and volume of a portion of the generator.
The above description is only for the best embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention.
The details of the present invention not described in detail in the specification are well known to those skilled in the art.
Claims (12)
1. A serial oxygen generator is characterized by comprising an oxygen generating tablet group, a metal wire, a shell component, an ignition component and a filter layer;
an oxygen-producing tablet set for oxygen production, comprising a plurality of tablets having a through-hole in the middle; the metal wire is bent into a spring shape, and one end of the metal wire is taken as a leading-out end and led out to an ignition end of the ignition component; the metal wire penetrates through the through holes of the tablets, so that the tablets are continuously connected in series and cover the metal wire;
the shell assembly is used for limiting the metal wires connected with the tablets in series, installing the filter layer and the ignition assembly and arranging a gas outlet for discharging gas;
when the ignition assembly is used, the oxygen generating tablet group is ignited, the oxygen generating tablet group continuously burns along the metal wire to release oxygen, and the oxygen is discharged from the gas outlet after being subjected to gas purification through the filter layer.
2. The in-line oxygen generator of claim 1, wherein: and a heat insulating material is arranged between the oxygen generating tablet group and the shell component.
3. The in-line oxygen generator of claim 1 or 2, wherein: the tablet is cylindrical, spherical, capsule-shaped or rectangular, and has one hole or more than one hole.
4. The in-line oxygen generator of claim 1 or 2, wherein: the metal wires are iron wires or copper wires, and the number of the metal wires is 1 or more than 1.
5. The in-line oxygen generator of claim 1 or 2, wherein: the shell is cylindrical, cuboid or square, and is made of stainless steel.
6. The in-line oxygen generator of claim 2, wherein: the heat insulating material is vermiculite, ceramic aluminum fiber cotton or silicon dioxide aerogel.
7. The in-line oxygen generator of claim 1 or 2, wherein: the shell component comprises a shell, a lower cover, an upper cover, a top cover, an upper supporting bowl, a lower supporting bowl and a check ring; the two ends of the shell are opened, the upper cover is fixed to the top end of the shell and provided with an air outlet, and a pressure release valve is installed on the upper cover; the air outlet is mainly used for exhausting air; the pressure relief threshold is used for pressure relief; the lower cover is fixed to the bottom end of the shell, and a through hole is formed in the middle of the lower cover for mounting an ignition assembly; the upper supporting bowl and the top cover are round panels, the size of the upper supporting bowl is matched with the inner diameter of the shell, and the lower supporting bowl is a round plate and is provided with a flanging; the top cover is fixed at the top end of the shell, the upper support bowl is fixed at the middle upper part of the shell, and the top cover and the upper support bowl form an accommodating space for accommodating the filter layer; the lower supporting bowl is fixed at the bottom of the shell, and a metal wire for connecting tablets in series is arranged between the upper supporting bowl and the lower supporting bowl for axial limiting; the upper supporting bowl and the lower supporting bowl are welded with check rings and used for radially limiting the metal wires of the serially connected tablets.
8. The in-line oxygen generator of claim 7, wherein: the ignition assembly comprises an electronic igniter and an igniter fixing piece; the igniter is fixed through the igniter fixing piece, the lower end of the igniter fixing piece penetrates through the through hole of the lower cover, and the lower supporting bowl is propped against the upper end of the igniter fixing piece so as to position the igniter fixing piece; the metal wire leading-out end is connected to the ignition end of the igniter along the axial direction of the shell.
9. The in-line oxygen generator of claim 7, wherein: the upper cover is provided with a gas outlet, the gas outlet is provided with a gas outlet spring and a gas outlet one-way valve, when the pressure is greater than the minimum gas outlet pressure of the gas outlet spring, oxygen passes through the gas outlet one-way valve to be exhausted in a one-way mode, and external gas cannot enter the series oxygen generator.
10. The in-line oxygen generator of claim 9, wherein: the upper cover is provided with a pressure release valve which comprises a pressure release spring and a pressure release one-way valve, when the pressure of the air outlet which is larger than the pressure release spring is caused to be inside due to the accident, the air is exhausted in one way through the pressure release one-way valve, and the outside air cannot enter the interior of the serial oxygen generator.
11. The in-line oxygen generator of claim 1 or 2, wherein: the shell component comprises a shell, an upper cover, a top cover, an upper support bowl, a lower support bowl, a check ring and a fixed pipe; the upper end of the shell is provided with an opening, the upper cover is welded to the top end of the cylindrical shell, the upper cover is provided with an air outlet, and a pressure release valve is installed; the middle of the upper cover is provided with a through hole for installing an ignition assembly; the upper supporting bowl and the top cover are circular panels, the size of the upper supporting bowl is matched with the inner diameter of the shell, and the lower supporting bowl is a cylindrical sleeve; the top cover is fixed at the top end of the shell, the upper support bowl is fixed at the middle upper part of the shell, a fixed pipe is longitudinally arranged in the middle of an accommodating space formed by the top cover and the upper support bowl, and a filter layer is arranged outside the fixed pipe; the lower supporting bowl is fixed at the bottom end of the shell, and a metal wire connected with tablets in series is placed between the upper supporting bowl and the bottom end of the shell for axial limiting; the upper supporting bowl is welded with a check ring, and the check ring and the lower supporting bowl are used for radially limiting the metal wires of the serially-connected tablets.
12. The in-line oxygen generator of claim 11, wherein: the ignition assembly comprises an excitation pin and a mechanical impact igniter; the mechanical impact type igniter penetrates through the through holes of the upper cover and the top cover to be fixed, and the excitation pin is arranged on the mechanical impact type igniter and is exposed out of the upper cover; the mechanical impact type igniter is in mechanical fit riveting with the top cover and the fixed pipe, and the sealing performance is guaranteed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920994961.7U CN210505569U (en) | 2019-06-28 | 2019-06-28 | Tandem type oxygen generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920994961.7U CN210505569U (en) | 2019-06-28 | 2019-06-28 | Tandem type oxygen generator |
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| CN210505569U true CN210505569U (en) | 2020-05-12 |
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| CN201920994961.7U Active CN210505569U (en) | 2019-06-28 | 2019-06-28 | Tandem type oxygen generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113713606A (en) * | 2021-07-22 | 2021-11-30 | 中国船舶重工集团公司第七一八研究所 | Purifying material and purifying bed layer for chemical oxygen generator |
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2019
- 2019-06-28 CN CN201920994961.7U patent/CN210505569U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113713606A (en) * | 2021-07-22 | 2021-11-30 | 中国船舶重工集团公司第七一八研究所 | Purifying material and purifying bed layer for chemical oxygen generator |
| CN113713606B (en) * | 2021-07-22 | 2024-04-02 | 中国船舶重工集团公司第七一八研究所 | Purifying material and purifying bed layer for chemical oxygen generator |
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Inventor after: Wang Qiuyu Inventor after: Zhang Ling Inventor after: Ruan Jiasheng Inventor after: Fu Wenbin Inventor after: Xue Hailong Inventor after: Wang Chen Inventor after: Hu Xiaojia Inventor after: Zhai Lianfeng Inventor after: Xi Liang Inventor after: Zhu Lining Inventor after: Liu Liu Inventor before: Wang Qiuyu Inventor before: Ruan Jiasheng Inventor before: Xue Hailong Inventor before: Wang Chen Inventor before: Hu Xiaojia Inventor before: Zhai Lianfeng Inventor before: Xi Liang Inventor before: Zhu Lining Inventor before: Liu Liu Inventor before: Zhang Ling |