CN219786873U - Self-purification reflow oven device suitable for 5-micrometer ultra-clean working space - Google Patents
Self-purification reflow oven device suitable for 5-micrometer ultra-clean working space Download PDFInfo
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- CN219786873U CN219786873U CN202320605439.1U CN202320605439U CN219786873U CN 219786873 U CN219786873 U CN 219786873U CN 202320605439 U CN202320605439 U CN 202320605439U CN 219786873 U CN219786873 U CN 219786873U
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- 238000000746 purification Methods 0.000 title claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 66
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- 239000007924 injection Substances 0.000 claims abstract description 44
- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- 239000002245 particle Substances 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000010992 reflux Methods 0.000 claims abstract description 5
- 239000000284 extract Substances 0.000 claims abstract description 3
- 238000004140 cleaning Methods 0.000 claims description 19
- 239000013618 particulate matter Substances 0.000 claims description 12
- 238000007664 blowing Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 230000003749 cleanliness Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
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- 238000012827 research and development Methods 0.000 description 4
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- 238000003466 welding Methods 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000604 Ferrochrome Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
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- 229910000679 solder Inorganic materials 0.000 description 2
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- 229920001342 Bakelite® Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
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Abstract
The utility model relates to a self-purification reflow oven device suitable for 5-micrometer ultra-clean working space, which comprises a self-purification heating reflow device (1) and a product transmission device (2); the self-purification heating reflux device (1) comprises a shell (6), a self-purification heating module (3) in the shell (6) and a clean gas injection assembly; the product transmission device (2) comprises a bracket (14), a particle negative pressure collector (9) in the bracket (14), a motion transmission mechanism (11) and an exhaust motor (12), wherein the exhaust motor (12) extracts particles generated by the motion transmission mechanism (11) through the particle negative pressure collector (9) and an exhaust pipe and discharges the particles to the outside. Compared with the prior art, the utility model ensures the cleanliness of the gas entering the hearth, simultaneously collects and intensively processes the particulate matters, and further ensures the requirement of 5-micrometer ultra-clean space in the reflow oven.
Description
Technical Field
The utility model belongs to the technical field of reflow ovens, and relates to a self-purifying reflow oven device suitable for a 5-micrometer ultra-clean working space.
Background
Reflow ovens are devices that reliably bond surface mounted components and circuit boards together by solder alloys by providing a heated environment to heat and melt the solder paste.
With the rapid development of modern industry and advanced technology, components manufactured by a part of precise semiconductor enterprises are miniaturized more and more reliable welding environments are needed to realize long-term reliable operation of electronic equipment, so that higher requirements are put on the production environment in the production and manufacturing links, and external impurity pollution sources are needed to be prevented in the manufacturing process, so that deterioration of component performance and reduction of product yield and reliability are avoided. Therefore, a clean room working environment is required to be adopted in the semiconductor welding manufacturing process to improve the welding quality, and further, higher requirements are also put on the research and development design and production of a reflow soldering furnace. The traditional existing reflow soldering furnace is only suitable for the semiconductor industry with lower requirements on the working environment because the control on the cleanliness of the gas in the furnace is not involved in the development and design, and meanwhile, the moving transmission parts and the heat insulation materials of the equipment are easy to generate dust and other particles in the operation process. When the requirement of the high-end semiconductor industry on the working environment in the reflow oven is increased to a clean space of 5 microns, the links of the outside air, the motion transmission parts, the manufacturing materials and the like which possibly generate dust particles are necessarily comprehensively considered in the research and development design process of the reflow oven, so that the working environment of the product in the oven is ensured to reach the clean requirement of 5 microns.
Patent CN105651048A discloses a heating assembly and a furnace body using the heating assembly, comprising a bellows, a heating air outlet pipeline, a fan motor, a return air channel, an air nozzle, an air outlet, a primary air pressure distribution valve, a heater, a secondary air pressure distribution valve and a heating fan; the air box comprises a heating air outlet pipeline, a heating fan is arranged in the center of the heating air outlet pipeline, two ends of the heating air outlet pipeline extend out of a secondary air outlet pipeline, four air outlets are respectively arranged at the end parts of the secondary air outlet pipeline, a cover plate is integrally buckled at the bottom of each of the four air outlets, a plurality of air spraying nozzles are arranged on the cover plate, two sides of the heating fan inserted into the heating air outlet pipeline are provided with fan motors of the heating fan, and the fan motors of the heating fan are arranged outside a furnace chamber; the heating fan is arranged on the heating air outlet pipeline. However, the patent design research and development does not involve the use of 5-micron ultra-clean environment, so that the gas entering the furnace is not purified efficiently, and the working environment cannot meet the requirement of high welding quality of customers.
Patent CN204345770U discloses a portable purifying electric heating fireplace, comprising a fireplace shell, a nylon net primary filter, a honeycomb medium filter, a high-efficiency filter, a heating effect display lamp, pseudo carbon, a flame effect motor, a blower and an electric heater. The bottom of the fireplace shell is provided with an air return opening, and the bottom of the fireplace shell is provided with a nylon net primary filter, a honeycomb medium filter, a high-efficiency filter, a heating effect display lamp and a flame effect motor in turn; a blower is arranged above the flame effect motor and is connected with the rear wall in the wall furnace shell; the front surface of the flame effect motor is provided with ornamental flame glass, pseudo carbon and panel glass; an air outlet is arranged on the front surface of the fireplace shell above the panel glass; the fireplace shell at the air outlet is connected with an electric heater. However, although the nylon net primary filter, the honeycomb medium filter and the high-efficiency filter are adopted in the patent, the air quality in the furnace can be effectively controlled, but no mention is made of the treatment of particles such as dust generated by a motion transmission part and a heat insulation material in the operation process of the reflow furnace, and the purification mode of the heating fireplace is insufficient to ensure the 5-micrometer ultra-clean environment of the reflow furnace.
Disclosure of Invention
The utility model aims to overcome at least one defect in the prior art and provide a self-purification reflow oven device suitable for 5-micrometer ultra-clean working space.
The aim of the utility model can be achieved by the following technical scheme:
one of the technical schemes of the utility model is to provide a self-purification reflow oven device suitable for 5 micron ultra-clean working space, which comprises a self-purification heating reflow device and a product transmission device;
the self-purification heating reflux device comprises a shell, a self-purification heating module and a clean gas injection assembly, wherein the self-purification heating module is arranged in the shell, the self-purification heating module is used for heating and filtering gas in a hearth, so that the temperature and cleanliness of air in the whole hearth are in a controllable state, and the clean gas injection assembly is used for extracting external gas and filtering and injecting the external gas into the self-purification heating module, so that the air in the whole hearth is in a positive pressure state, the inflow of external unclean air is avoided, and the air in the hearth is further ensured to be in an ultra-clean state;
the product transmission device comprises a bracket, a particulate matter negative pressure collector, a motion transmission mechanism and an exhaust motor, wherein the particulate matter negative pressure collector and the exhaust tube are used for extracting particulate matters generated by the motion transmission mechanism, and the particulate matters are discharged to the outside, so that the requirement of gas in a hearth for meeting 5-micrometer ultra-clean space is further ensured.
Further, the clean gas injection assembly includes a clean gas injection tube, a HEPA (High Efficiency Particulate Air) filter, a gas injection tube, and a gas injection motor.
Further, the HEPA filter is connected with the gas injection motor through a gas injection pipe.
Further, the HEPA filter is connected with the self-purification heating module through a clean gas injection pipe.
Further, the self-purification heating module comprises an inner air inlet channel, an outer air inlet channel, a heating unit, a built-in HEPA filter and a blowing motor, wherein the outer air inlet channel is connected with a clean gas injection pipe.
Further, a dust-free heat preservation module is arranged in the shell, and a self-purification heating module is embedded in the dust-free heat preservation module.
Further, the two ends below the motion transmission mechanism are provided with particle negative pressure collectors.
Further, the exhaust motor is connected with the particulate matter negative pressure collector through a first exhaust pipe.
Further, the exhaust motor is connected with the motion transmission mechanism through a second exhaust pipe.
Further, the exhaust motor is connected with the exhaust pipe.
As the preferred technical scheme, clean gas injection pipe, first exhaust column, exhaust pipe and second exhaust column adopt stainless steel or silica gel glass fiber, casing and support adopt stainless steel or 45 # steel, HEPA filter and built-in HEPA filter adopt HEPA high-efficient filter, motion drive mechanism adopt sprocket belt, gear chain, rack and pinion or worm gear, dust-free heat preservation module adopt integral type or split type gypsum board or thermal-insulated bakelite, heating element adopt ferrochrome heater strip.
According to the utility model, the self-purification heating module is used for ensuring the cleanliness of air entering the reflow oven, meanwhile, the clean gas injection assembly is added for optimizing the air quantity entering the hearth, and the dust-free heat preservation module is used for avoiding the generation of particulate matters in the oven body. And meanwhile, particles generated by a moving part such as a chain due to friction and the like in the moving process are taken away by a second exhaust tube under the mounting plate of the moving part, and particles generated by a transmission part such as a gear in the moving process are completed by a particle negative pressure collector under the transmission part.
According to the utility model, on the basis of the existing heating module and gas injection assembly, the HEPA high-efficiency filter is arranged in the heating module and the gas injection assembly, so that particles with the particle size of more than 5 microns can be effectively filtered; meanwhile, clean gas is continuously injected, so that the gas in the whole hearth is in a positive pressure state, the entry of external gas is prevented, and the cleanness of the gas in the hearth is further ensured.
According to the heat-insulating rock wool adopted by the furnace body, particles such as rock wool fibers and dust are easy to generate, the gypsum heat-insulating module which is specially designed without dust is adopted, and on the basis of meeting the functions of the original heat-insulating rock wool, the design requirement on the cleanliness of the heat-insulating module by 5 microns is increased, so that the cleanliness of gas in the furnace can be ensured.
The utility model adds a negative pressure collector of the particles under the transmission parts such as gears and the moving parts such as chains, and controls the suction force of the negative pressure collector of the particles by controlling and adjusting the suction motor through frequency conversion, thereby ensuring that the particles such as powder generated by mechanical friction can be collected and intensively treated in time, and further ensuring the cleanliness of the gas in the whole hearth.
Compared with the prior art, the utility model has the following advantages:
(1) The self-purification heating module and the clean gas injection assembly are adopted, so that the cleanliness of gas entering the hearth is improved;
(2) According to the utility model, the original heat-insulating rock wool is removed, and a dust-free heat-insulating module is adopted in the furnace body, so that the generation of particulate matters is effectively controlled;
(3) The utility model increases the negative pressure collector of the particulate matters, collects and concentrates the particulate matters generated by the motion transmission mechanism, and strictly controls the generation and diffusion of the large particulate matters in the hearth.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a self-cleaning reflow oven apparatus suitable for use in a 5 micron ultra clean work space in accordance with an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a self-purifying heating reflow apparatus according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a dust-free thermal insulation module according to an embodiment of the utility model;
FIG. 4 is a schematic diagram of a self-purifying heating module according to an embodiment of the present utility model;
fig. 5 is a schematic structural diagram of a product transmission device according to an embodiment of the present utility model.
The figure indicates:
1-self-purification heating reflux unit, 2-product transmission, 3-self-purification heating module, 4-clean gas injection pipe, 5-HEPA filter, 6-casing, 7-gas injection pipe, 8-gas injection motor, 9-particulate matter negative pressure collector, 10-first exhaust pipe, 11-motion transmission mechanism, 12-exhaust motor, 13-exhaust pipe, 14-support, 15-second exhaust pipe, 16-dust-free heat preservation module, 17-interior inlet channel, 18-outer inlet channel, 19-heating unit, 20-built-in HEPA filter, 21-blowing motor.
Detailed Description
The present utility model will be described in detail with reference to specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present utility model is not limited to the following examples.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying positive importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Examples:
a self-cleaning reflow oven device suitable for 5-micrometer ultra-clean working space is mainly composed of a self-cleaning heating reflow device 1 at the top and a product transmission device 2 at the bottom as shown in figure 1. Six pairs of supports and wheels are arranged at the bottom of the device for fixing and moving.
The self-cleaning heating reflux device 1, as shown in fig. 2 to 4, mainly comprises a self-cleaning heating module 3, a clean gas injection assembly, a shell 6 and a dust-free heat preservation module 16. The dust-free heat preservation module 16 is arranged below the shell 6, twenty through holes are formed in the top plate of the dust-free heat preservation module 16, and ten self-purification heating modules 3 are embedded. The clean gas injection assembly is arranged above the shell 6 and mainly comprises a clean gas injection pipe 4, a HEPA (High Efficiency Particulate Air) filter 5, a gas injection pipe 7 and a gas injection motor 8, wherein the HEPA filter 5 and the gas injection motor 8 are arranged on the shell 6 and are connected through the gas injection pipe 7, and the HEPA filter 5 and the self-purification heating module 3 are connected through the clean gas injection pipe 4. The self-purification heating module 3 mainly comprises an inner air inlet channel 17, an outer air inlet channel 18, a heating unit 19 and a built-in HEPA filter 20, wherein the outer air inlet channel 18 is connected with the clean gas injection pipe 4.
Clean gas injection pipe 4, gas injection pipe 7, first exhaust column 10, exhaust pipe 13 and second exhaust column 15 adopt silica gel glass fiber, casing 6 and support 14 adopt stainless steel, HEPA filter 5 and built-in HEPA filter 20 adopt HEPA high efficiency filter V-BANK HEPA FILTER of sharp clean production, gas injection motor 8, exhaust motor 12 and blowing motor 21 adopt NIDEC customization, particulate matter negative pressure collector 9 adopts heler research and development, motion transmission mechanism 11 adopts gear and chain, dust-free heat preservation module 16 adopts split type gypsum board, heating unit 19 adopts ferrochrome heater strip.
When the reflow oven works, air in the hearth is heated and filtered through the self-purification heating module 3 arranged in the shell 6, and after air extracted by the air injection motor 8 is filtered through the HEPA filter 5 through the air injection pipe 7, the air in the whole hearth is injected into the respective purification heating module 3 through the clean air injection pipe 4, so that the air in the whole hearth is in a positive pressure state, the inflow of external unclean air is avoided, and the air in the hearth is further ensured to be in an ultra-clean state. When the self-purification heating module 3 works, the impeller is driven to rotate through the rotation of the double-blowing motor 21, the self-purification heating module 3 sucks air from the inside of the hearth, then the air enters the self-purification heating module 3 through the inner air inlet channel 17, is heated by the heating unit 19, enters the built-in HEPA filter 20 and returns to the inside of the hearth after being purified. When the furnace body is in a working state, the process is always in a circulating mode, so that the temperature and the cleanliness of air in the whole hearth are in a controllable state. Meanwhile, the dust-free heat preservation module 16 is arranged between the shell 6 and the self-purification heating module 3, and can not cause secondary pollution to clean air while playing a good heat preservation role on the clean air in the hearth.
The product transmission device 2, as shown in fig. 5, mainly comprises a particulate matter negative pressure collector 9, a first exhaust pipe 10, a motion transmission mechanism 11, an exhaust motor 12, a discharge pipe 13, a bracket 14 and a second exhaust pipe 15. A motion transmission mechanism 11 is arranged above the bracket 14, and particulate matter negative pressure collectors 9 are arranged at two ends below the motion transmission mechanism 11. Two exhaust motors 12 are arranged below the support 14, the exhaust motors 12 are connected with the particulate matter negative pressure collector 9 through a first exhaust pipe 10, the exhaust motors 12 are connected with the motion transmission mechanism 11 through a second exhaust pipe 15, and the exhaust motors 12 are connected with the discharge pipe 13.
The particle negative pressure collectors 9 are arranged at two ends of the support 14, when the reflow oven operates, the exhaust motor 12 extracts particles generated by the transmission part and the moving part through the particle negative pressure collectors 9 and the second exhaust tube 15 arranged below the motion transmission mechanism 11, and the particles are discharged to a designated space through the discharge tube 13, so that the air in the hearth is ensured to meet the requirement of 5-micrometer ultra-clean space.
The cleanliness test of the self-purification reflow oven device suitable for 5-micrometer ultra-clean working space comprises the following steps: the reflow oven was first transported to a clean room with a clean rating of 10K, and after the reflow oven was turned on for 4 h, a cleanliness test was performed, with a test instrument of KANOMAX 3905. The experiment shows that the particles of the air in the clean room are shown in table 1, the particles of the air in the middle position in the reflow oven are shown in table 2, and the experiment data shows that the quantity of the particles of 5 microns and above in the air in the reflow oven is zero, so that the design requirement is met.
TABLE 1 particulate matter of clean indoor air
| Diameter (μm) | Quantity of |
| 0.3 | 25044 |
| 0.5 | 4191 |
| 1.0 | 1592 |
| 3.0 | 310 |
| 5.0 | 140 |
| 10.0 | 93 |
TABLE 2 particulate matter of air in the middle position inside reflow oven
| Diameter (μm) | Quantity of |
| 0.3 | 41 |
| 0.5 | 10 |
| 1.0 | 5 |
| 3.0 | 0 |
| 5.0 | 0 |
| 10.0 | 0 |
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.
Claims (10)
1. A self-cleaning reflow oven device suitable for 5-micrometer ultra-clean working space, which is characterized by comprising a self-cleaning heating reflow device (1) and a product transmission device (2);
the self-purification heating reflux device (1) comprises a shell (6), a self-purification heating module (3) and a clean gas injection assembly, wherein the self-purification heating module (3) is used for heating and filtering gas in a hearth, and the clean gas injection assembly is used for extracting external gas and filtering and injecting the external gas into the self-purification heating module (3);
the product transmission device (2) comprises a bracket (14), a particle negative pressure collector (9) in the bracket (14), a motion transmission mechanism (11) and an exhaust motor (12), wherein the exhaust motor (12) extracts particles generated by the motion transmission mechanism (11) through the particle negative pressure collector (9) and an exhaust pipe and discharges the particles to the outside.
2. A self-cleaning reflow oven apparatus suitable for use in a 5 micron ultra clean work space according to claim 1, wherein the clean gas injection assembly includes a clean gas injection tube (4), a HEPA filter (5), a gas injection tube (7) and a gas injection motor (8).
3. A self-cleaning reflow oven apparatus for 5 μm ultra-clean workspaces according to claim 2, wherein the HEPA filter (5) is connected to the gas injection motor (8) via a gas injection tube (7).
4. A self-cleaning reflow oven apparatus suitable for use in 5 μm ultra-clean workspaces according to claim 2, wherein the HEPA filter (5) is connected to the self-cleaning heating module (3) via a clean gas injection tube (4).
5. The self-cleaning reflow oven device suitable for 5-micrometer ultra-clean working space according to claim 4, wherein the self-cleaning heating module (3) comprises an inner air inlet channel (17), an outer air inlet channel (18), a heating unit (19), a built-in HEPA filter (20) and a blowing motor (21), and the outer air inlet channel (18) is connected with a clean gas injection pipe (4).
6. A self-cleaning reflow oven apparatus suitable for 5 μm ultra-clean work space according to claim 1, wherein the housing (6) is provided with a dust-free thermal insulation module (16), and the dust-free thermal insulation module (16) is embedded with a self-cleaning heating module (3).
7. A self-cleaning reflow oven apparatus suitable for 5 μm ultra-clean work space according to claim 1, wherein the two ends below the motion driving mechanism (11) are provided with particulate matter negative pressure collectors (9).
8. A self-cleaning reflow oven apparatus suitable for use in 5 micron ultra clean work space according to claim 1, wherein the suction motor (12) is connected to the particulate matter negative pressure collector (9) through a first suction pipe (10).
9. A self-cleaning reflow oven apparatus suitable for use in 5 micron ultra clean workspaces according to claim 1, wherein the suction motor (12) is connected to the motion transmission mechanism (11) via a second suction pipe (15).
10. A self-cleaning reflow oven apparatus suitable for use in 5 μm ultra-clean workspaces according to claim 1, wherein the suction motor (12) is connected to a drain (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320605439.1U CN219786873U (en) | 2023-03-24 | 2023-03-24 | Self-purification reflow oven device suitable for 5-micrometer ultra-clean working space |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320605439.1U CN219786873U (en) | 2023-03-24 | 2023-03-24 | Self-purification reflow oven device suitable for 5-micrometer ultra-clean working space |
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| Publication Number | Publication Date |
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| CN219786873U true CN219786873U (en) | 2023-10-03 |
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|---|---|---|---|
| CN202320605439.1U Active CN219786873U (en) | 2023-03-24 | 2023-03-24 | Self-purification reflow oven device suitable for 5-micrometer ultra-clean working space |
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| Country | Link |
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| CN (1) | CN219786873U (en) |
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