CN215640741U - Smoke monitoring system - Google Patents
Smoke monitoring system Download PDFInfo
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- CN215640741U CN215640741U CN202120672653.XU CN202120672653U CN215640741U CN 215640741 U CN215640741 U CN 215640741U CN 202120672653 U CN202120672653 U CN 202120672653U CN 215640741 U CN215640741 U CN 215640741U
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- proof box
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- 239000000779 smoke Substances 0.000 title claims abstract description 112
- 238000012544 monitoring process Methods 0.000 title claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 239000000428 dust Substances 0.000 claims description 29
- 239000012858 resilient material Substances 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 description 7
- 230000003139 buffering effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000013013 elastic material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model provides a smoke monitoring system, which comprises a smoke detection device, wherein the smoke detection device comprises: a dust-proof box; the sliding plate is connected with the inner wall of the dust-proof box in a vertical sliding manner, and the upper surfaces of two ends of the sliding plate are symmetrically provided with first springs; a smoke sensor disposed on an upper surface of the sliding plate; the sleeve is arranged inside the dust-proof box, and one end of the sleeve is fixedly connected with the inner wall of the upper side of the dust-proof box; the sliding column is arranged inside the sleeve in a sliding mode, and one end of the sliding column extends to the outside of the sleeve and is fixedly connected with the upper surface of the sliding plate. According to the utility model, the smoke sensor can be taken out of the dustproof box by pulling down the sliding plate, and an auxiliary tool is not required for dismounting the smoke sensor, so that the smoke sensor can be quickly dismounted, the dismounting efficiency of the smoke sensor is greatly improved, and the working efficiency of workers is improved.
Description
Technical Field
The utility model relates to the technical field of smoke monitoring, in particular to a smoke monitoring system.
Background
Smoke monitoring systems typically detect the concentration of smoke in the environment through a smoke sensor, also known as a smoke alarm or smoke detector, which is capable of detecting the smoke generated during a fire. The photoelectric smoke sensor is adopted in the device, and can be widely applied to places such as markets, hotels, shops, warehouses, machine rooms, houses and the like for fire safety detection. The smoke sensor is internally provided with a buzzer, and can make a strong sound after alarming.
For guaranteeing experimenter's safety, also need set up smog monitored control system in the cell experiment room, present smoke transducer adopts bolted connection's mode fixed mounting on the roof between the cell experiment room mostly, when smoke transducer damages, need use appurtenance (screwdriver) etc. to demolish smoke transducer's fixing bolt, if do not have appurtenance, be not convenient for demolish smoke transducer.
SUMMERY OF THE UTILITY MODEL
The utility model provides a smoke monitoring system which is used for solving the technical problems that most of existing smoke sensors are fixedly installed on a roof of a cell experiment room in a bolt connection mode, when the smoke sensors are damaged, the fixing bolts of the smoke sensors need to be detached by using auxiliary tools (screwdrivers) and the like, and the smoke sensors are inconvenient to detach without the auxiliary tools.
In order to solve the above technical problem, the present invention discloses a smoke monitoring system, comprising: a smoke detection device, the smoke detection device comprising:
the bottom of the dust-proof box is provided with an opening;
the sliding plate is arranged inside the dust-proof box and is in up-and-down sliding connection with the inner wall of the dust-proof box, first springs are symmetrically arranged on the upper surfaces of two ends of the sliding plate, one ends of the first springs are fixedly connected with the inner wall of the upper side of the dust-proof box, and the other ends of the first springs are fixedly connected with the upper surface of the sliding plate;
a smoke sensor disposed on an upper surface of the sliding plate;
the sleeve is arranged inside the dust-proof box, and one end of the sleeve is fixedly connected with the inner wall of the upper side of the dust-proof box;
the sliding column is arranged inside the sleeve in a sliding mode, and one end of the sliding column extends to the outside of the sleeve and is fixedly connected with the upper surface of the sliding plate.
Preferably, the number of the sleeves is two, and the two sleeves are symmetrical left and right about the center line of the dust box.
Preferably, the lower surface of the sliding plate is provided with a handle, and the outer surface of the handle is provided with anti-skid grains.
Preferably, the side walls of the dust-proof box are provided with dust-proof nets, and the interior of the dust-proof box is communicated with the exterior of the dust-proof box through the dust-proof nets.
Preferably, the upper surface of the dust-proof box is provided with a connecting column, one end of the connecting column is fixedly connected with the upper surface of the dust-proof box, the connecting column is far away from one end of the dust-proof box is provided with a mounting plate, mounting holes are formed in the mounting plate, and at least two mounting holes are formed in the mounting plate.
Preferably, still set up the buffering subassembly in the dust proof box, the buffering subassembly includes:
a buffer plate, a lower surface of the buffer plate being in contact with an upper surface of the smoke sensor;
the second spring, the second spring sets up the buffer board upper surface, second spring one end with buffer board upper surface fixed connection, the second spring other end with dust proof box upside inner wall fixed connection.
Preferably, still set up fixed subassembly in the dust proof box, fixed subassembly includes:
the two fixing plates are symmetrically arranged on the left side and the right side of the second spring, and the upper ends of the two fixing plates are respectively fixedly connected with the inner wall of the upper side of the dust-proof box;
the rotating shaft is arranged on the fixing plate, is perpendicular to the fixing plate and is rotatably connected with the fixing plate;
the rotating rod is arranged at one end, far away from the fixed plate, of the rotating shaft, the rotating rod is arranged in an inverted L shape, the middle of the rotating rod is fixedly connected with the rotating rod, the end, close to the buffer plate, of the rotating rod is provided with an idler wheel, the lower end of the idler wheel is in surface contact with the upper surface of the buffer plate, the end, far away from the idler wheel, of the rotating rod is provided with an anti-skid block, and the end, far away from the rotating rod, of the anti-skid block is in contact with the outer side wall of the smoke sensor;
the third spring, the third spring sets up the dwang lateral wall, third spring one end with dwang lateral wall fixed connection, the third spring other end with sleeve pipe outer wall fixed connection.
Preferably, the anti-skid block is made of soft elastic materials.
The technical scheme of the utility model has the following advantages: the utility model provides a smoke monitoring system, which comprises a smoke detection device, wherein the smoke detection device comprises: a dust-proof box; the sliding plate is connected with the inner wall of the dust-proof box in a vertical sliding manner, and the upper surfaces of two ends of the sliding plate are symmetrically provided with first springs; a smoke sensor disposed on an upper surface of the sliding plate; the sleeve is arranged inside the dust-proof box, and one end of the sleeve is fixedly connected with the inner wall of the upper side of the dust-proof box; the sliding column is arranged inside the sleeve in a sliding mode, and one end of the sliding column extends to the outside of the sleeve and is fixedly connected with the upper surface of the sliding plate. According to the utility model, the smoke sensor can be taken out of the dustproof box by pulling down the sliding plate, and an auxiliary tool is not required for dismounting the smoke sensor, so that the smoke sensor can be quickly dismounted, the dismounting efficiency of the smoke sensor is greatly improved, and the working efficiency of workers is improved.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the apparatus particularly pointed out in the written description and drawings thereof.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of a fixing assembly according to the present invention;
FIG. 4 is an enlarged view of the utility model at A in FIG. 3.
In the figure: 1. a dust-proof box; 2. an opening; 3. a sliding plate; 4. a first spring; 5. a smoke sensor; 6. a sleeve; 7. a traveler; 8. a handle; 9. a dust screen; 10. connecting columns; 11. mounting a plate; 12. mounting holes; 13. a buffer plate; 14. a second spring; 15. a fixing plate; 16. a rotating shaft; 17. rotating the rod; 18. a roller; 19. anti-skid blocks; 20. and a third spring.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions and technical features between various embodiments can be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not be within the protection scope of the present invention.
Example 1:
an embodiment of the present invention provides a smoke monitoring system, as shown in fig. 1 to 4, including: a smoke detection device, the smoke detection device comprising:
the dust-proof box comprises a dust-proof box 1, wherein an opening 2 is formed in the bottom of the dust-proof box 1;
the sliding plate 3 is arranged inside the dust-proof box 1, the sliding plate 3 is connected with the inner wall of the dust-proof box 1 in a vertical sliding manner, first springs 4 are symmetrically arranged on the upper surfaces of two ends of the sliding plate 3, one ends of the first springs 4 are fixedly connected with the inner wall of the upper side of the dust-proof box 1, and the other ends of the first springs 4 are fixedly connected with the upper surface of the sliding plate 3;
a smoke sensor 5, wherein the smoke sensor 5 is arranged on the upper surface of the sliding plate 3;
the sleeve 6 is arranged inside the dustproof box 1, and one end of the sleeve 6 is fixedly connected with the inner wall of the upper side of the dustproof box 1;
the sliding column 7 is arranged inside the sleeve 6 in a sliding mode, and one end of the sliding column 7 extends to the outside of the sleeve 6 and is fixedly connected with the upper surface of the sliding plate 3.
The working principle and the beneficial effects of the technical scheme are as follows: the smoke monitoring system comprises a smoke detection device, the smoke detection device comprises a dust-proof box 1, a sliding plate 3 is arranged in the dust-proof box 1 in a sliding mode, a smoke sensor 5 is placed on the sliding plate 3, the smoke sensor 5 adopts a wireless smoke sensor, the wireless smoke sensor is OZT-115CZ, the smoke concentration in an installation environment can be detected through the smoke sensor 5, whether fire danger exists in a cell experiment room or not is confirmed, the smoke sensor 5 is arranged in the dust-proof box 1, the dust-proof box 1 has a dustproof function, dust attached to the surface of the smoke sensor 5 can be reduced, the smoke sensor 5 is protected, the service life of the smoke sensor 5 is prolonged, when the smoke sensor 5 needs to be overhauled or replaced, the sliding plate 3 is pulled downwards, the sliding plate 3 slides downwards along the inner wall of the dust-proof box 1, the sliding plate 3 slides downwards to drive a sliding column 7 to slide along the inner wall of a sleeve 6, first spring 4 is tensile, until sliding plate 3 from opening 2 roll-off, then can take off smoke sensor 5 from sliding plate 3, then loosen sliding plate 3, sliding plate 3 is inside the dust proof box 1 of re-sliding under the effect of first spring 4, after smoke sensor 5 changes or overhauls and finishes, pull out sliding plate 3 from dust proof box 1 inside once more, then put smoke sensor 5 on sliding plate 3 upper surface, place the back that finishes, loosen sliding plate 3, under the guide effect of sleeve 6, sliding plate 3 slides in dust proof box 1 inside again, smoke sensor 5 installs and finishes, this smoke detection device does not need auxiliary tool to carry out dismantling of smoke sensor 5, the quick assembly disassembly of smoke sensor 5 of being convenient for, smoke sensor 5's dismouting efficiency has been promoted greatly, staff's work efficiency has been improved.
Optionally, an intelligent fire-fighting evacuation system is further connected into the smoke monitoring system, so that experimenters can be rapidly evacuated from a cell laboratory conveniently when fire danger occurs, and when the smoke sensor 5 detects that the smoke concentration exceeds a preset range, the smoke sensor 5 can give an alarm to the central control device and control the door control to unlock, so that the experimenters can be rapidly evacuated.
Example 2
On the basis of the above embodiment 1, as shown in fig. 1, the two sleeves 6 are provided, and the two sleeves 6 are symmetrical to each other about the center line of the dust box 1.
The working principle and the beneficial effects of the technical scheme are as follows: the sleeve pipe 6 is provided with two, slides along 6 inner walls of sleeve pipe in two sleeve pipes 6 respectively and is provided with traveller 7, through setting up two sleeve pipes 6 and traveller 7, can provide the direction for the slip of sliding plate 3, has also improved the stability when sliding plate 3 slides greatly.
Example 3
On the basis of the embodiment 1 or 2, as shown in fig. 1, the lower surface of the sliding plate 3 is provided with a handle 8, and the outer surface of the handle 8 is provided with anti-skid lines.
The working principle and the beneficial effects of the technical scheme are as follows: the handle 8 is installed on the lower surface of the sliding plate 3, the sliding plate 3 can be pulled through the handle 8, the sliding plate 3 is convenient to pull out from the interior of the dustproof box 1, the anti-slip lines are arranged on the outer surface of the handle 8, the friction force between a user's hand and the handle 8 can be increased, and the sliding is not easy to slip when the handle 8 is pulled.
Example 4
On the basis of any one of embodiments 1-3, as shown in fig. 1 and 2, the side walls of the dust-proof box 1 are provided with dust-proof nets 9, and the interior of the dust-proof box 1 is communicated with the exterior of the dust-proof box 1 through the dust-proof nets 9.
The working principle and the beneficial effects of the technical scheme are as follows: all inlay at dust proof box 1 lateral wall and establish and install dust screen 9, dust screen 9 can make dust proof box 1 inside and outside intercommunication, has realized the inside circulation of air with the outside of dust proof box 1, and the smoke transducer 5 of also being convenient for accurately detects the smoke concentration in the air, and dust screen 9 that dust proof box 1 set up can block the dust, reduces smoke transducer 5 surface adhesion's dust quantity, has improved smoke transducer 5's cleanliness.
Example 5
On the basis of any one of embodiments 1-4, as shown in fig. 1, a connecting column 10 is arranged on the upper surface of the dust-proof box 1, one end of the connecting column 10 is fixedly connected with the upper surface of the dust-proof box 1, a mounting plate 11 is arranged at one end, far away from the dust-proof box 1, of the connecting column 10, mounting holes 12 are formed in the mounting plate 11, and at least two mounting holes 12 are arranged.
The working principle and the beneficial effects of the technical scheme are as follows: the connecting column 10 is arranged on the upper surface of the dust-proof box 1, the connecting column 10 is connected with the mounting plate 11, the mounting hole 12 is formed in the mounting plate 11, the mounting plate 11 can be fixed on a roof through the mounting bolt in the mounting hole 12, the dust-proof box 1 is fixedly mounted on the roof, and only the sliding plate 3 needs to be pulled when the smoke sensor 5 is dismounted, so that the working efficiency is improved.
Example 6
On the basis of any one of embodiments 1 to 5, as shown in fig. 1, a buffering assembly is further disposed in the dust-proof box 1, and the buffering assembly includes:
a buffer plate 13, wherein the lower surface of the buffer plate 13 is in contact with the upper surface of the smoke sensor 5;
The working principle and the beneficial effects of the technical scheme are as follows: set up the buffering subassembly in dust proof box 1, the buffering subassembly includes buffer board 13 and second spring 14, place the sliding plate 3 back when smoke sensor 5, loosen sliding plate 3, sliding plate 3 drives smoke sensor 5 and slides to dust proof box 1, smoke sensor 5 upper surface contacts with buffer board 13 gradually, and drive buffer board 13 upward movement, second spring 14 compression, the elasticity that utilizes second spring 14 can slow down smoke sensor 5 upward movement's speed, avoid 3 sliding speed of sliding plate to make the smoke sensor 5 upper surface at the excessive speed to cause and receive the distance striking and damage, the effectual smoke sensor 5 that has protected, the life of smoke sensor 5 has been improved.
Example 7
On the basis of embodiment 6, as shown in fig. 3 and 4, a fixing assembly is further disposed in the dust-proof box 1, and the fixing assembly includes:
the two fixing plates 15 are symmetrically arranged on the left side and the right side of the second spring 14, and the upper ends of the two fixing plates 15 are respectively fixedly connected with the inner wall of the upper side of the dustproof box 1;
the rotating shaft 16 is arranged on the fixed plate 15, and the rotating shaft 16 is perpendicular to the fixed plate 15 and is rotatably connected with the fixed plate 15;
the rotating rod 17 is arranged at one end, far away from the fixed plate 15, of the rotating shaft 16, the rotating rod 17 is arranged in an inverted L shape, the middle position of the rotating rod 17 is fixedly connected with the rotating rod 17, one end, close to the buffer plate 13, of the rotating rod 17 is provided with an idler wheel 18, the lower end of the idler wheel 18 is in surface contact with the upper surface of the buffer plate 13, one end, far away from the idler wheel 18, of the rotating rod 17 is provided with an anti-skid block 19, one end, far away from the rotating rod 17, of the anti-skid block 19 is in contact with the outer side wall of the smoke sensor 5, and the anti-skid block 19 is made of a soft elastic material;
third spring 20, third spring 20 sets up the dwang 17 lateral wall, third spring 20 one end with dwang 17 lateral wall fixed connection, the third spring 20 other end with 6 outer wall fixed connection of sleeve pipe.
The working principle and the beneficial effects of the technical scheme are as follows: under the action of the third spring 20, the roller 18 arranged at one end of the rotating rod 17 is always in contact with the upper surface of the buffer plate 13, when the buffer plate 13 moves upwards, the buffer plate 13 drives the rotating rod 17 to rotate around the rotating shaft 16 through the roller 18, the rotating rod 17 rotates to drive the anti-skid blocks 19 to move towards the direction close to the smoke sensor 5 until the anti-skid blocks 19 are in contact with the outer wall of the smoke sensor 5, at the moment, the third spring 20 stretches, because the anti-skid blocks 19 are made of soft elastic materials and have anti-skid effects, the two anti-skid blocks 19 are in contact with the outer wall of the smoke sensor 5 at the same time, the smoke sensor 5 can be clamped and fixed inside the dust-proof box 1, so that the smoke sensor 5 is positioned at the center of the sliding plate 3, the smoke sensor 5 is not easy to shake inside the dust-proof box 1, the stability of the smoke sensor 5 is improved, and the smoke sensor 5 is prevented from shaking and being damaged in the dust-proof box 1, the service life of the smoke sensor 5 is further extended.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A smoke monitoring system, comprising: a smoke detection device, the smoke detection device comprising:
the dust-proof box (1), the bottom of the dust-proof box (1) is provided with an opening (2);
the sliding plate (3) is arranged inside the dust-proof box (1), the sliding plate (3) is connected with the inner wall of the dust-proof box (1) in a vertical sliding mode, first springs (4) are symmetrically arranged on the upper surfaces of two ends of the sliding plate (3), one ends of the first springs (4) are fixedly connected with the inner wall of the upper side of the dust-proof box (1), and the other ends of the first springs (4) are fixedly connected with the upper surface of the sliding plate (3);
a smoke sensor (5), wherein the smoke sensor (5) is arranged on the upper surface of the sliding plate (3);
the sleeve (6) is arranged inside the dust-proof box (1), and one end of the sleeve (6) is fixedly connected with the inner wall of the upper side of the dust-proof box (1);
the sliding column (7) is arranged inside the sleeve (6) in a sliding mode, and one end of the sliding column (7) extends to the outside of the sleeve (6) and is fixedly connected with the upper surface of the sliding plate (3).
2. A smoke monitoring system according to claim 1, wherein said sleeves (6) are provided in two, said two sleeves (6) being left-right symmetric about a centre line of said dust bin (1).
3. A smoke monitoring system according to claim 1, wherein said sliding panel (3) is provided with a grip (8) on its lower surface, said grip (8) being provided with anti-slip threads on its outer surface.
4. A smoke monitoring system according to claim 1, wherein said dust-proof box (1) side walls are provided with dust-proof nets (9), and the interior of said dust-proof box (1) is communicated with the exterior of said dust-proof box (1) through said dust-proof nets (9).
5. A smoke monitoring system according to claim 1, wherein a connection column (10) is arranged on the upper surface of the dust box (1), one end of the connection column (10) is fixedly connected with the upper surface of the dust box (1), a mounting plate (11) is arranged on the end of the connection column (10) far away from the dust box (1), mounting holes (12) are arranged in the mounting plate (11), and at least two mounting holes (12) are arranged.
6. A smoke monitoring system according to claim 1, wherein a cushioning assembly is further provided within said dust bin (1), said cushioning assembly comprising:
a buffer plate (13), wherein the lower surface of the buffer plate (13) is in contact with the upper surface of the smoke sensor (5);
second spring (14), second spring (14) set up buffer board (13) upper surface, second spring (14) one end with buffer board (13) upper surface fixed connection, second spring (14) other end with dust proof box (1) upside inner wall fixed connection.
7. A smoke monitoring system according to claim 6, wherein a fixing assembly is further arranged in said dust box (1), said fixing assembly comprising:
the two fixing plates (15) are symmetrically arranged on the left side and the right side of the second spring (14), and the upper ends of the two fixing plates (15) are fixedly connected with the inner wall of the upper side of the dustproof box (1) respectively;
the rotating shaft (16) is arranged on the fixing plate (15), and the rotating shaft (16) is perpendicular to the fixing plate (15) and is in rotating connection with the fixing plate (15);
the rotating rod (17) is arranged at one end, away from the fixed plate (15), of the rotating shaft (16), the rotating rod (17) is arranged in an inverted L shape, the middle position of the rotating rod (17) is fixedly connected with the rotating rod (17), an idler wheel (18) is arranged at one end, close to the buffer plate (13), of the rotating rod (17), the lower end of the idler wheel (18) is in surface contact with the upper surface of the buffer plate (13), an anti-skid block (19) is arranged at one end, away from the idler wheel (18), of the rotating rod (17), and the end, away from the rotating rod (17), of the anti-skid block (19) is in contact with the outer side wall of the smoke sensor (5);
third spring (20), third spring (20) set up dwang (17) lateral wall, third spring (20) one end with dwang (17) lateral wall fixed connection, third spring (20) other end with sleeve pipe (6) outer wall fixed connection.
8. A smoke monitoring system according to claim 7, wherein said anti-skid pads (19) are made of a soft resilient material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120672653.XU CN215640741U (en) | 2021-04-01 | 2021-04-01 | Smoke monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120672653.XU CN215640741U (en) | 2021-04-01 | 2021-04-01 | Smoke monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215640741U true CN215640741U (en) | 2022-01-25 |
Family
ID=79935198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120672653.XU Active CN215640741U (en) | 2021-04-01 | 2021-04-01 | Smoke monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215640741U (en) |
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2021
- 2021-04-01 CN CN202120672653.XU patent/CN215640741U/en active Active
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Address after: Room 01-02, Floor 10, Room 101, Building 1 to 11, Block 3, No. 186, South 4th Ring West Road, Fengtai District, Beijing 100070 Patentee after: Beijing Dana Experimental Technology Co.,Ltd. Country or region after: China Address before: Room 01-02, 10th Floor, Room 101, Floors 1-11, Building 1, Zone 3, No. 186 South Fourth Ring West Road, Fengtai District, Beijing Patentee before: BEIJING DYNAFLOW EXPERIMENT TECHNOLOGY Co.,Ltd. Country or region before: China |