CN210951730U - Anti-floating object retractable air bag reducer air inlet system - Google Patents
Anti-floating object retractable air bag reducer air inlet system Download PDFInfo
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- CN210951730U CN210951730U CN201921280453.9U CN201921280453U CN210951730U CN 210951730 U CN210951730 U CN 210951730U CN 201921280453 U CN201921280453 U CN 201921280453U CN 210951730 U CN210951730 U CN 210951730U
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Abstract
The utility model discloses a prevent that floater can receive and release gasbag reducer air intake system belongs to the ventilation system field, and this air intake system fills the gassing system, gets tuber pipe air intake shutoff system, outer wall, gasbag box and gasbag reducer air intake including getting tuber pipe, gasbag. This but prevent floater receiving and releasing gasbag reducer air intake system can make and get wind gap portion edge and keep away from the building surface and reduce the air inlet speed of getting wind gap portion, reduces the new trend and gets the volume that the wind gap adsorbs the floater, keeps the cleanness of new trend system, does not influence the building facade pleasing to the eye. Meanwhile, when the fresh air intake system is checked and maintained, external natural wind, pollutants and mosquitoes can be prevented from entering the room.
Description
Technical Field
The utility model relates to a ventilation system field, especially a prevent that floater can receive and release gasbag reducer air intake system.
Background
Modern people living in towns spend an average of more than 80% of their time indoors per day. Relevant studies have shown that most indoor air pollution indexes are 5-10 times higher than outdoor air pollution indexes. Indoor air pollution has become a cause of many diseases. Therefore, the fresh air system is widely adopted in various residential buildings and public buildings, and a coarse filter made of a metal wire mesh is arranged at an air inlet part of a common fresh air inlet system. However, in the use of the air supply systems of various types of fresh air systems, flying flocculent pollutants and other pollutants floating in the air, such as catkin, poplar wadding and the like, are easily adsorbed on the metal wire mesh coarse filter of the outdoor fresh air intake, so that the resistance of the air system is increased, the air intake is reduced, and the fresh air intake channel is easily blocked when the adsorption capacity is large.
From the aerodynamics angle, the flying cotton easily adsorbs and mainly has two reasons in new trend air intake: 1) under the action of natural wind, pollutants and floating objects drift with the wind and are easy to adsorb and stay on the obstacles when contacting the obstacles. (similar to the principle of the easy accumulation of drifting refuse on beaches). The building outer wall is a huge barrier, floaters drifting along with wind easily touch the surface of the outer wall to stop moving, are easy to accumulate on the surface of the outer wall, and slowly and vertically fall down after touching the surface of the outer wall when wind power is small, and finally fall down at the root of the outer wall. And the fresh air intake is generally pasted on the outer wall and is easy to adsorb floaters from various sources which collide with the peripheral outer wall and fall after colliding with the upper outer wall, the adsorption amount is large, and the blockage is easy. 2) Because most of the existing residential buildings adopt a shear wall structure, the space between reinforcing steel bars in the wall is generally not more than 200mm, so that in order to not affect the structural safety and the reinforcing steel bars, when a fresh air system is installed in the residential building, the size of a fresh air intake is limited, generally not more than 160mm, the area of the intake is small, the air speed of the intake is easily overhigh, and according to the aerodynamic principle, the higher the air speed is, the larger the air negative pressure around the intake is. Therefore, the negative pressure around the air intake opening is larger, and the air intake opening is easier to adsorb floaters in a larger range around the air intake opening, so that more floaters are adsorbed by the air intake opening. Therefore, in order to reduce the entering amount of flying flocs in the fresh air intake, two measures of keeping the edge of the air intake part away from the surface of the outer wall of the building and reducing the air speed of the air intake part are needed from the aerodynamic principle, and the conventional fresh air intake part is tightly attached to the surface of the building, and is limited in size and high in air speed.
When the fresh air system is not used, is shut down or needs to overhaul the interior of the room after the system operates for a period of time, the port of the outer wall of the air intake opening needs to be plugged in time. In a common electric valve with a metal valve plate or a check valve with a spring-driven metal valve plate, the metal valve plate needs to be reserved to rotate in a pipeline, so gaps are reserved around the valve plate and the inner wall of the air pipe, and external mosquitoes, cold (hot) air or outdoor air (such as air of minus ten degrees or less degrees outdoors in winter in the north) containing more pollutants such as PM2.5 and the like easily enter the air pipe system through the gaps to influence indoor thermal comfort and air quality. Therefore, the common metal air valve cannot effectively plug the air pipe.
In the new trend system, coarse filter stainless steel net often is used as the first barrier of getting the wind gap portion, effectively filters pollutants such as flotage, leaf, however, in the in-service use, when spring, autumn transition season or room are vacant, when the new trend system does not use, because coarse filter stainless steel net does not cover, outdoor pollutant very easily makes dirty coarse filter stainless steel net, increases into new trend resistance and influences the air inlet quality, consequently, when the new trend system does not use, need to cover coarse filter stainless steel net. And the coarse filtration stainless steel wire mesh is arranged on the outer wall surface of a building, so that the prior art is difficult to cover.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention provides a retractable airbag reducer air intake system for preventing floating objects.
The technical scheme of the utility model as follows:
in order to achieve the above object, the utility model discloses a technical scheme is: provides an air inlet system of a buoy-proof retractable air bag reducer. Including getting the tuber pipe, the gasbag fills gassing system, the outer wall, it passes the outer wall to get tuber pipe one end, stretch out the outer wall surface, the gasbag fills gassing system and is located getting the indoor both sides of tuber pipe outer wall, its characterized in that still includes the gasbag box, gasbag reducer air intake and get tuber pipe air intake shutoff system, it is inboard to get the lower part that tuber pipe is close to the outer wall end to get tuber pipe air intake shutoff system, fill gassing headtotail with the gasbag, the gasbag box is located the outer side and gets tuber pipe mouth of pipe all around, leave in the gasbag box when gasbag reducer air intake shrink, stretch out gasbag box-shaped one-tenth gasbag reducer air intake during the inflation, gasbag reducer air intake and gasbag fill gassing head.
Coarse filter stainless steel net is prior art, establishes in getting the tuber pipe outside, and the great stainless steel of relative space prevents that bird's mesh is less, the stainless steel is denser, can effectively carry out coarse filter, avoids floater fibre etc. to get into and gets tuber pipe oral area.
The air inlet plugging system of the air taking pipe comprises an elastic self-expansion sealing air bag, an electric valve and a miniature electric communication valve, wherein the miniature electric communication valve is positioned at the upper end of the elastic self-expansion sealing air bag, the lower end of the elastic self-expansion sealing air bag is connected with the electric valve, and the electric valve is communicated with a compressed air pipe in the air bag inflation and deflation system and is connected with a reversely connected miniature electric control air compressor.
According to the buoy-proof retractable air bag reducer air inlet system, the elastic self-expansion sealing air bag is made of elastic rubber, the air taking pipe is filled with the elastic self-expansion sealing air bag in a natural state, and the elastic self-expansion sealing air bag is reduced to the inner side of the air taking pipe in a vacuum state.
The utility model provides an anti-floating object can receive and release gasbag reducer air intake system, the gasbag fills the gassing system and includes miniature automatically controlled air compressor machine, the miniature automatically controlled air compressor machine of transposition, compressed air pipe, the voltmeter, miniature automatically controlled air compressor machine is fixed and is got the tuber pipe upside in the outer wall, the miniature automatically controlled air compressor machine of transposition is fixed and is got the tuber pipe downside in the wall, miniature automatically controlled air compressor machine and the miniature automatically controlled air compressor machine of transposition all communicate gasbag reducer air intake through getting the compressed air pipe of fixing on the tuber pipe inner wall, the voltmeter is connected on the compressed air pipe that is close to gasbag reducer air intake, be used for monitoring the inside atmospheric pressure of gasbag reducer air intake.
An air inlet of the air bag reducer is arranged in the air bag box, and the air inlet of the air bag reducer is contracted in the air bag box when not inflated. The air bag is expanded to extend out of the air bag box after being inflated, and an air bag reducing pipe air inlet is formed at the end part of the air pipe of the air inlet part extending out of the outer wall.
The miniature electric control air compressor is connected with an air inlet of the air bag reducing pipe in the air bag box through a compressed air pipe. When the miniature electric control air compressor runs, the air inlet of the air bag reducing pipe is inflated through the compressed air pipe, so that the air bag reducing pipe is expanded and extends out of the air bag box.
And the miniature electric control air compressor and the reversely connected miniature electric control air compressor are both fixed on the inner side of the outer wall and are fixed with the air pipe at the air intake part.
The reversely-connected miniature electric control air compressor is connected with an air inlet of an air bag reducing pipe in the air bag box through a compressed air pipe. When the reverse connection miniature electric control air compressor runs, air is pumped from the air inlet of the air bag reducing pipe through the compressed air pipe and is sent to the room, so that the air bag reducing pipe is contracted into the air bag box.
The buoy-proof retractable air bag reducer air inlet system is preferably characterized in that the compressed air pipe on the lower side of the air taking pipe is communicated with the air inlet plugging system of the air taking pipe.
Preferably, when the miniature electric control air compressor runs, the air inlet of the air bag reducing pipe is inflated through the compressed air pipe, so that the air bag reducing pipe expands and extends out of the air bag box.
Preferably, when the reverse connection miniature electric control air compressor runs, air is pumped from the air inlet of the air bag reducing pipe through a compressed air pipe, so that the air bag reducing pipe is contracted into the air bag box.
The utility model has the advantages that:
1) the utility model discloses be equipped with the gasbag reducer air intake that retractable distance building surface is far away, be difficult for adsorption surface floater, air inlet speed is lower can receive and release according to the condition of outdoor floater. In order to reduce the amount of floaters adsorbed by the fresh air intake opening and further reduce the amount of floaters adsorbed by the coarse filter screen, the air speed of the air intake opening needs to be reduced, the air intake opening is separated from the surface of the outer wall of the building by a certain distance, and stagnation and falling areas of the floaters on the surface of the outer wall are avoided. However, the direct expansion of the air intake opening is limited by the distance between the steel bars (and the beautiful effect of the building facade), and cannot be realized; in addition, the air intake port directly extends out of the wall surface, and the appearance of the building is influenced if the air intake port is far away from the wall surface, so that permission of a community manager is difficult to obtain. Therefore, the utility model discloses be equipped with miniature automatically controlled air compressor machine, the miniature automatically controlled air compressor machine of transposition, compressed air pipe, gasbag box, gasbag reducing pipe air intake. The air inlet of the air bag reducing pipe is formed after being inflated and extending out of the outer wall, and the air inlet of the air bag reducing pipe is formed, is far away from the surface of a building, is not easy to adsorb surface floaters, has low air inlet speed and can be folded and unfolded according to the condition of outdoor floaters. The method meets the restriction of various objective conditions and realizes a good aerodynamic anti-flying wadding effect.
2) When flying, the white wadding outside the building flies, the visibility of the facade outside the building is not high, and the influence of the air inlet of the air bag reducing pipe on the appearance of the building is small. And the air inlet of the air bag reducing pipe is in a contraction state when no flying cotton exists, and the air bag reducing pipe is contracted in the air bag box, so that the air bag reducing pipe occupies small space outside the outer wall of a building and does not influence the attractiveness of the vertical surface.
3) In the weather of wind and rain, rainwater easily enters an outdoor air inlet, and the rain-proof shutter is mostly used in the prior art. But the rain-proof cover of rain-proof tripe has to cover the air inlet portion, and effective air inlet area is less, and under the weather that the vast majority does not have rain, rain-proof tripe does not play rain-proof effect and has produced unnecessary air resistance. The utility model discloses a retractable gasbag reducer air intake stretches out the outer wall face, and the horn mouth slope is outdoor, also can regard as rain-proof air intake to use, stretches out when raining, contracts when there is not rain.
4) The air inlet of the air bag reducing pipe is in a half-shrinkage covering state, the air bag reducing pipe which can be retracted collapses and is soft, and the air inlet part is covered by the air bag reducing pipe in a drooping mode, so that floating objects and rainwater are prevented from entering the air taking pipe. The coarse filtering stainless steel wire net can be covered, and the coarse filtering stainless steel wire net is prevented from being polluted when the fresh air system is not used. And plays a role in preventing rain.
5) When the elastic self-expansion sealing air bag expands, the outer wall port of the air intake opening is blocked in time, and external pollutants, mosquitoes, cold (hot) air or outdoor air containing more pollutants such as sand and dust are effectively prevented from entering the room to influence indoor thermal comfort and air quality. In addition, because the shutdown state of the fresh air system in transition seasons and unmanned use lasts longer than the sealing state of outdoor floaters or rainfall, the air pipe is sealed by the elastic force of the air bag in the sealing state by adopting the elastic self-expansion sealing air bag, and the air compressor is not required to continuously pressurize
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
the parts in the drawings are numbered as follows: 1-reversely connected miniature electric control air compressor, 2-compressed air pipe, 3-electric valve, 4-elastic self-expansion sealed air bag, 5-miniature electric communication valve, 6-coarse filtration stainless steel wire net, 7-air bag box, 8-outer wall, 9-miniature electric control air compressor, 10-air taking pipe, 11-air bag reducing pipe air inlet, 12-electric pressure gauge, 13-wall attached flying wadding area
FIG. 2 is a schematic view of the air inlet of the airbag reducer in a contracted state; in fig. 2 the self-inflating resilient bladder is shown in an inflated sealing condition.
FIG. 3 is a schematic structural view of the air inlet of the air bag reducer in a half-contracted covering state; the self-inflating resilient bladder is shown in figure 3 in a deflated state.
Fig. 4 is an enlarged view of the airbag case, the electric pressure gauge, the electric valve, the elastic self-expanding sealing airbag and the micro electric communicating valve of the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Fig. 1 is a schematic diagram of the structure of the air inlet system of the retractable air bag reducing pipe for the anti-floating object of the present invention, which comprises a reverse connection miniature electric control air compressor 1, a compressed air pipe 2, an electric valve 3, an elastic self-expanding sealing air bag 4, a miniature electric communication valve 5, a coarse filtering stainless steel wire net 6, an air bag box 7, an outer wall 8, a miniature electric control air compressor 9, an air intake pipe 10, an air inlet 11 of the air bag reducing pipe, a voltage meter 12, and an attached wall flying wadding area 13. One end of the air taking pipe 10 penetrates through the building outer wall 8 and extends out of the surface of the outer wall 8, a coarse filtering stainless steel wire mesh 6 is installed at the port of the air taking pipe 10, and the air bag box 7 is installed on the outer wall 8 around the port of the air taking pipe 10. The reverse connection miniature electric control air compressor 1, the compressed air pipe 2, the electric pressure gauge 12 and the miniature electric control air compressor 9 form an air bag inflation and deflation system. Miniature automatically controlled air compressor machine 9 is installed at 8 indoor sides of outer wall air intaking pipe 10 upsides, and it communicates gasbag reducer air intake 11 in the gasbag box 7 through compressed air pipe 2, and the miniature automatically controlled air compressor machine 1 of transposition is installed at 8 indoor sides of outer wall air intaking pipe 10 downside, and it communicates gasbag reducer air intake 11 in the gasbag box 7 through compressed air pipe 2, and voltage force meter 12 fixed mounting is on the compressed air pipe that is close to gasbag reducer air intake 11. The electric valve 3, the elastic self-expansion sealing air bag 4 and the micro electric communication valve 5 form an air inlet plugging system of the air taking pipe, one end of the electric valve 3 is communicated with the compressed air pipe 2, the other end of the electric valve is communicated with the elastic self-expansion sealing air bag 4, and the upper part of the elastic self-expansion sealing air bag 4 is connected with the micro electric communication valve 5. A wall-attached flying area 13 is formed between the outer wall 8 and the air inlet 11 of the air bag reducer.
The air inlet of the retractable air bag reducer has four working states:
the working state I is as follows: and an air charging and air inlet working state. When the floating objects in the outdoor air are more, the miniature electric control air compressor inflates the air inlet of the air bag reducing pipe through the compressed air pipe during operation, so that the air bag reducing pipe expands to extend out of the air bag box to form the air inlet in the shape of a reducing pipe, and a large amount of flying cotton fibers are prevented from entering the air taking pipe.
And a second working state: and (5) inflation and rainproof working state. When outdoor weather is handed over, the miniature electric control air compressor inflates the air inlet of the air bag reducing pipe through the compressed air pipe during operation, so that the air bag reducing pipe expands to extend out of the air bag box to form an air inlet in a gradually reducing pipe shape and extends out of the wall surface, and the air inlet in a horn shape slopes outdoors, so that the aim of preventing rainwater from entering the air taking pipe is fulfilled.
And a third working state: a contracted state. When no floating object or rainfall exists in the outdoor air, the miniature electric control air compressor is reversely connected to operate, and the air inlet of the retractable air bag reducing pipe is contracted into the air bag box.
And the working state is four: semi-collapsed cover state. When floaters or rainfall exists in outdoor air and the fresh air system stops working, the miniature electric control air compressor is reversely connected to operate, and when the reducing pipe of the retractable air bag shrinks and collapses, the reducing pipe of the retractable air bag sags to cover the air inlet part, so that the floaters and the rainwater are prevented from entering the air intake pipe. The mode is used for supplementing the elastic self-expansion sealing air bag, the coarse filtering stainless steel wire net can be covered, and the coarse filtering stainless steel wire net is prevented from being polluted by pollutants. And plays a role in preventing rain.
The compressed air pipe close to the air inlet of the air bag reducing pipe is provided with a voltage meter which can monitor the air pressure in the air inlet of the air bag reducing pipe, and the voltage meter is positive pressure relative to the atmospheric pressure in the inflation air inlet (or rain-proof) working state; in the semi-shrinkage covering state, the pressure of the electric pressure gauge is basically the same as the atmospheric pressure; in the contraction state, the pressure of the electric pressure gauge is negative pressure relative to the atmospheric pressure in the contraction process, and the pressure is basically the same as the atmospheric pressure after the contraction is finished.
The elastic self-expansion sealing air bag in the air inlet plugging system of the air intake pipe is made of elastic rubber,
the elastic self-expanding sealed air bag has two working states:
the working state I is as follows: a self-expanding state. In this state, the micro electric communication valve is opened, the electric valve is closed, the internal air pressure of the elastic self-expansion sealing air bag is the same as that of the outside, and the air inlet section is sealed in a self-expansion state.
And a second working state: vacuum contracted state. In this state, the micro electric communication valve is closed, the electric valve is opened first, the reversely connected micro electric control air compressor is started to vacuumize the elastic self-expansion sealed air bag, and the elastic self-expansion sealed air bag is contracted into a small ball. Then, the electric valve is closed, the elastic self-expansion sealing air bag keeps a small ball state, and the section of the air pipe can normally enter air.
When the fresh air system is stopped due to a fault or the system needs to overhaul the interior of the chamber after running for a period of time, the elastic self-expansion sealing air bag is in a self-expansion working state. The working state can also effectively prevent external mosquitoes, cold (hot) air or outdoor air containing more pollutants such as sand and dust (such as air of minus ten degrees outdoor in winter in the north) from entering the air pipe system to influence indoor thermal comfort and air quality.
The utility model discloses an aerify and the conversion of gassing state, effectively reduced the flying wadding volume that gets into and get the tuber pipe, and then reduced the amount of coarse filter net absorbent floater, improved coarse filter's efficiency, prevent simultaneously that rainy weather rainwater from getting into and getting the tuber pipe. Because the air inlet and the air outlet of the air bag reducing pipe can be extended and contracted, a large amount of space is not occupied on the surface of the outer wall of the building, and the attractive effect of the vertical face of the building is maintained. When the elastic self-expansion sealing air bag expands, the port of the outer wall of the air intake opening is blocked in time, so that external mosquitoes, cold (hot) air or outdoor air containing more pollutants such as sand and dust (such as outdoor air of minus ten degrees in winter in the north) are effectively prevented from entering the air pipe system to influence indoor thermal comfort and air quality.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the same principle as the present invention.
Claims (8)
1. The utility model provides an anti-floating object gasbag reducing pipe air intake system that can receive and release, is including getting tuber pipe, gasbag fill gassing system, outer wall, it passes the outer wall to get tuber pipe one end, stretches out the outer wall surface, gasbag fill gassing system is located get indoor both sides of tuber pipe outer wall, its characterized in that still includes gasbag box, gasbag reducing pipe air intake and gets tuber pipe air intake shutoff system, get tuber pipe air intake shutoff system and be located get the lower part inboard that the tuber pipe is close to the outer wall end, with gasbag fill gassing headtotail, the gasbag box is located the outer wall outside get tuber pipe mouth all around, leave when the gasbag reducing pipe air intake contracts in the gasbag box, stretch out during the inflation gasbag box becomes gasbag reducing pipe air intake, gasbag reducing pipe air intake with gasbag fill gassing system intercommunication.
2. The buoy resistant retractable air bag reducer air inlet system as claimed in claim 1, wherein the air inlet plugging system of the air intake pipe comprises an elastic self-expanding sealed air bag, an electric valve and a micro electric communication valve, the micro electric communication valve is located at the upper end of the elastic self-expanding sealed air bag, the lower end of the elastic self-expanding sealed air bag is connected with the electric valve, and the electric valve is communicated with the air bag inflation and deflation system.
3. The buoy resistant retractable air bag reducer air inlet system as claimed in claim 2, wherein the elastic self-expandable sealing air bag is made of elastic rubber, and is self-expandable to fill the air intake pipe by virtue of elasticity of the elastic self-expandable sealing air bag in a natural state, and is reduced inside the air intake pipe in a vacuum state.
4. The flotage preventing retractable air bag reducer air inlet system according to claim 1, wherein the air bag inflation and deflation system comprises a micro electric control air compressor, a reversely connected micro electric control air compressor, a compressed air pipe and a voltage force meter, the micro electric control air compressor is fixed on the inner side of the outer wall and on the upper side of the air intake pipe, the reversely connected micro electric control air compressor is fixed on the inner side of the wall and on the lower side of the air intake pipe, the micro electric control air compressor and the reversely connected micro electric control air compressor are both communicated with the air bag reducer air inlet through the compressed air pipe fixed on the inner wall of the air intake pipe, and the voltage force meter is connected to the compressed air pipe close to the air bag reducer air inlet and used for monitoring air pressure inside the air bag reducer air inlet.
5. The buoyant article-stowable air bag reducer air intake system of claim 4, wherein said compressed air duct on the underside of said intake duct communicates with said intake duct plugging system.
6. The anti-float retractable air bag reducer air inlet system according to claim 4, wherein said electrically controlled micro air compressor inflates said air bag reducer air inlet to a positive pressure relative to atmospheric pressure through said compressed air tube during operation, causing it to expand and extend out of said air bag box.
7. The anti-float retractable air bag reducer air intake system of claim 4, wherein said reverse miniature electrically controlled air compressor is operated to draw air from said air bag reducer air intake through said compressed air duct to an internal negative pressure relative to atmospheric pressure, causing it to deflate into said air bag box.
8. The anti-floater retractable air bag reducer air inlet system according to claim 4, wherein when said reverse-connected electrically controlled air compressor is operated, said air is pumped from said air bag reducer air inlet to the inside of said air bag reducer air inlet by said compressed air pipe, and the pressure inside said air bag reducer air inlet is substantially equal to the atmospheric pressure, so that said retractable air bag reducer collapses and becomes soft, and drops down to cover the air inlet, thereby preventing floaters and rainwater from entering the air intake pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921280453.9U CN210951730U (en) | 2019-08-08 | 2019-08-08 | Anti-floating object retractable air bag reducer air inlet system |
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| CN201921280453.9U CN210951730U (en) | 2019-08-08 | 2019-08-08 | Anti-floating object retractable air bag reducer air inlet system |
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| CN210951730U true CN210951730U (en) | 2020-07-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578978A (en) * | 2019-08-08 | 2019-12-17 | 北京王府科技有限公司 | Floater-preventing retractable air bag reducer air inlet system and operation method thereof |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578978A (en) * | 2019-08-08 | 2019-12-17 | 北京王府科技有限公司 | Floater-preventing retractable air bag reducer air inlet system and operation method thereof |
| CN110578978B (en) * | 2019-08-08 | 2021-05-11 | 北京王府科技有限公司 | Floater-preventing retractable air bag reducer air inlet system and operation method thereof |
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