CN115798894B - Combined type multifunctional transformer sound insulation and noise reduction device - Google Patents
Combined type multifunctional transformer sound insulation and noise reduction device Download PDFInfo
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- CN115798894B CN115798894B CN202310097307.7A CN202310097307A CN115798894B CN 115798894 B CN115798894 B CN 115798894B CN 202310097307 A CN202310097307 A CN 202310097307A CN 115798894 B CN115798894 B CN 115798894B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The invention relates to the technical field of transformers and discloses a combined type multifunctional transformer sound insulation and noise reduction device which comprises a cabinet body, wherein the inner wall of the cabinet body is connected with a clamping strip in a sliding manner, one side, far away from the cabinet body, of the clamping strip is fixedly connected with a baffle plate, the inner wall of the cabinet body is rotatably provided with a revolving door, a plurality of transformer bodies are arranged in the cabinet body, one side, close to the revolving door, of the baffle plate is clamped with a ventilation plate, sound insulation cotton is arranged between the baffle plate and the ventilation plate, and the inner wall of the ventilation plate is fixedly connected with a cutting plate.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a combined type multifunctional transformer sound insulation and noise reduction device.
Background
The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and the main components of the transformer are a primary coil and a secondary coil, and the combined transformer power cabinet and the transformer are combined, so that a plurality of transformers can be assembled in the power cabinet.
The existing transformer soundproof and noise reduction device is used for reducing noise by pasting soundproof cotton, the service life of the soundproof cotton is prolonged, at this time, the soundproof effect is greatly reduced, at this time, new soundproof cotton is required to be detached and re-pasted, but when old soundproof cotton is taken off, glue and partial soundproof cotton fragments remain on the inner wall of the cabinet body, the pasting of the follow-up soundproof cotton is affected, and therefore the combined type multifunctional transformer soundproof and noise reduction device is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the technical problem of providing a combined type multifunctional transformer sound insulation and noise reduction device aiming at the defects in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a multi-functional transformer sound insulation noise reduction device of combination, includes the cabinet body, the inner wall sliding connection of the cabinet body has the card strip, the one side fixedly connected with baffle that the card strip kept away from the cabinet body, the inner wall of the cabinet body rotates and installs the revolving door, the internally mounted of the cabinet body has a plurality of transformer bodies, the baffle is close to the one side joint of revolving door has the ventilative board, install the soundproof cotton between baffle and the ventilative board, the inner wall fixedly connected with cutting board of ventilative board; the surface of baffle and the inner wall of the cabinet body contact each other, the surface of revolving door and the surface of baffle contact each other, the surface of cutting board and the inner wall of baffle contact each other, can directly insert the baffle into the cabinet body through the card strip on the baffle and realize the combination of the cabinet body, convenient transportation after the split, when needs change soundproof cotton, take out the baffle, and pull down the ventilated plate of joint, change soundproof cotton, after changing, with ventilated plate again press on soundproof cotton and the joint advance on the baffle, cut the through-hole on the ventilated plate can be directly cut soundproof cotton simultaneously, make it communicate with the louvre on the baffle, only need clear up the soundproof cotton that cuts out prevent to block up the louvre can, need not to cut soundproof cotton by oneself according to the louvre on the baffle, direct mount can automatically cropped, very convenient.
Preferably, the inner wall of the cabinet body is provided with a gas flow guiding device, the gas flow guiding device comprises an upper partition plate and a lower partition plate, the inner walls of the upper partition plate and the lower partition plate are provided with fans, the inner wall of the upper partition plate is fixedly connected with an upper guide plate, and the inner wall of the lower partition plate is fixedly connected with a lower guide plate; the rear portion of last baffle and lower baffle and the inner wall fixed mounting of the cabinet body, the both sides of going up baffle and lower baffle and the surface mutual contact of ventilative board, and during the device operation, the fan can take away the heat that the transformer body of gas upper and lower department distributes through the direction of last deflector and lower deflector in with external air intake cabinet body, and the heat of taking away can pass through ventilative board and with the cotton contact that gives out sound insulation simultaneously, and the steam can dry the cotton that gives out damp, prevents that the environment from round clock difference in temperature is great and then leads to inside production steam and then contacts with the cotton that gives out sound, causes the cotton that gives out sound to get damp influences its sound insulation effect.
Preferably, the inner wall at the bottom of the lower guide plate is provided with a swinging plug-flow device, the swinging plug-flow device comprises a rotating plate, the top of the rotating plate is fixedly connected with a lug, and the inner wall below the lower guide plate is rotationally connected with an impeller; the surface of rotor plate is rotated through torsional spring and the inner wall of deflector bottom down and is connected, the surface of impeller and the surface mutual contact of lug, the gas that the fan blown out can contact and promote the impeller rotation with the impeller, and the impeller can strike the lug on the rotor plate and make the rotor plate take place the swing, and the rotor plate after the swing can reset under the torsional spring effect for the rotor plate reciprocates the swing, and then can further guide gas, promotes the scope that gas blown out, promotes the drying effect of blowing of soundproof cotton.
Preferably, the inner wall of the cabinet body is provided with a dehumidifying sliding device, the dehumidifying sliding device comprises a filter plate, the inner wall of the filter plate is rotationally connected with a screw rod, the surface of the screw rod is in transmission connection with a transmission plate, the inner wall of the transmission plate is fixedly connected with a plurality of transmission rods, the surface of the transmission rods is in sliding connection with a sliding block, the inner wall of the filter plate is provided with a sliding groove, and the surface of the sliding block is fixedly connected with a limiting rod; the surface of filter and ventilative board between the installation fixed, the surface of drive plate and the inner wall sliding connection of filter, the surface of gag lever post and the inner wall mutual contact of spout drive the lead screw through the motor of peripheral hardware and rotate, the lead screw can drive by the spacing drive plate of filter and remove, the drier in the drive plate can drive and remove, and the drier can further remove the moisture to soundproof cotton, can remove together through the slider on the drive rod when the drive plate removes, and gag lever post on the slider is arranged in the spout, consequently the slider can be along the spout and move about when self reciprocates to can promote the drier that the drive plate takes up to turn, and then replace drier water absorption department and non-water absorption department, promote the result of use of drier.
By adopting the technical scheme, the invention can bring the following beneficial effects:
1. this multi-functional transformer of combination formula gives sound insulation and falls device of making an uproar, through the cooperation operation between the cabinet body, baffle, card strip, revolving door, transformer body, air-permeable plate, cutting board, the soundproof cotton, when needs change the soundproof cotton, take out the baffle to pull down the air-permeable plate of joint, change soundproof cotton, press the air-permeable plate again on soundproof cotton and the joint enters on the baffle after the change is accomplished, can quick replacement, need not to paste and clear up.
2. This multi-functional transformer of combination formula gives sound insulation and falls device of making an uproar, through last baffle, last deflector, fan, lower baffle, cooperation operation between the deflector down, can dry the soundproof cotton and remove the tide, prevent that the environment from round clock the difference in temperature great and then lead to inside production steam and then with the soundproof cotton contact, cause the soundproof cotton to wet influence its sound insulation effect.
3. This multi-functional transformer of combination formula gives sound insulation and falls device of making an uproar for the rotor plate carries out reciprocating swing through the cooperation operation between rotor plate, lug, the impeller, and then can further guide to gas, promotes the scope that gas blown out, promotes soundproof cotton's drying effect of blowing.
4. This multi-functional transformer of combination formula gives sound insulation and falls device of making an uproar through cooperation operation between filter, lead screw, drive plate, transfer line, spout, slider, the gag lever post to can promote the drier that the drive plate area was played and turn, and then replace drier water absorption department and non-water absorption department, promote the result of use of drier.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a transformer body according to the present invention;
FIG. 3 is a schematic view of a baffle structure according to the present invention;
FIG. 4 is a schematic view of the multi-directional structure of the upper partition of the present invention;
FIG. 5 is a schematic view of a lower guide plate structure according to the present invention;
fig. 6 is a half cross-sectional view of a filter plate structure of the present invention.
In the figure: 1. a cabinet body; 2. a baffle; 21. clamping strips; 3. a revolving door; 4. a gas flow guiding device; 41. an upper partition plate; 42. an upper guide plate; 43. a blower; 44. a lower partition plate; 45. a lower guide plate; 5. swinging the plug-flow device; 51. a rotating plate; 52. a bump; 53. an impeller; 6. a dehumidifying sliding device; 61. a filter plate; 62. a screw rod; 63. a drive plate; 64. a transmission rod; 65. a chute; 66. a slide block; 67. a limit rod; 7. a transformer body; 8. a ventilation plate; 9. cutting a plate; 10. and (5) soundproof cotton.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
1-6, a combined type multifunctional transformer sound insulation and noise reduction device comprises a cabinet body 1, wherein the inner wall of the cabinet body 1 is slidably connected with a clamping strip 21, one side, away from the cabinet body 1, of the clamping strip 21 is fixedly connected with a baffle plate 2, a revolving door 3 is rotatably arranged on the inner wall of the cabinet body 1, a plurality of transformer bodies 7 are arranged in the cabinet body 1, one side, close to the revolving door 3, of the baffle plate 2 is clamped with a ventilation plate 8, sound insulation cotton 10 is arranged between the baffle plate 2 and the ventilation plate 8, and the inner wall of the ventilation plate 8 is fixedly connected with a cutting plate 9; the surface of baffle 2 and the inner wall of cabinet body 1 contact each other, the surface of revolving door 3 and the surface of baffle 2 contact each other, the surface of cutting board 9 and the inner wall of baffle 2 contact each other, can directly insert baffle 2 into the combination of cabinet body 1 through the card strip 21 on the baffle 2, convenient transportation after the split, when need change soundproof cotton 10, take out baffle 2, and pull down the ventilative board 8 of joint, change soundproof cotton 10, press ventilative board 8 on soundproof cotton 10 again and the joint enters baffle 2 after the change is accomplished, simultaneously cutting board 9 on ventilative board 8 can directly cut open the through-hole on soundproof cotton 10, make its and the louvre intercommunication on the baffle 2, only need clear up the soundproof cotton 10 of excision prevent to block up the louvre can, need not to cut soundproof cotton 10 by oneself according to the louvre on the baffle 2, direct mount can automatically cut, very convenient.
Preferably, the inner wall of the cabinet body 1 is provided with a gas guiding device 4, the gas guiding device 4 comprises an upper partition board 41 and a lower partition board 44, a fan 43 is arranged on the inner walls of the upper partition board 41 and the lower partition board 44, an upper guide board 42 is fixedly connected on the inner wall of the upper partition board 41, and a lower guide board 45 is fixedly connected on the inner wall of the lower partition board 44; the rear portion of going up baffle 41 and lower baffle 44 and the inner wall fixed mounting of cabinet body 1, go up the both sides of baffle 41 and lower baffle 44 and the surface mutual contact of air-permeable plate 8, when the device is operated, fan 43 can draw in the external air conditioning in cabinet body 1 and take away the heat that the transformer body 7 of gas upper and lower department gives off through the direction of last deflector 42 and lower deflector 45, the heat of taking away can be through air-permeable plate 8 and with the cotton 10 contact that gives off sound insulation simultaneously, the steam can dry the cotton 10 that gives off damp, prevent that the environment from round clock difference in temperature is great and then lead to inside production steam and then contact with cotton 10 that gives off sound, cause cotton 10 to receive damp influences its sound insulation effect.
Preferably, the inner wall at the bottom of the lower guide plate 45 is provided with a swinging plug-flow device 5, the swinging plug-flow device 5 comprises a rotating plate 51, the top of the rotating plate 51 is fixedly connected with a lug 52, and the inner wall below the lower guide plate 45 is rotatably connected with an impeller 53; the surface of rotor plate 51 rotates through the inner wall of torsional spring and bottom deflector 45 bottom and is connected, the surface of impeller 53 and the surface mutual contact of lug 52, the gas that fan 43 blown out can contact and promote the impeller 53 rotation with impeller 53, the lug 52 on the rotor plate 51 can be impacted to impeller 53 makes rotor plate 51 take place the swing, and the rotor plate 51 after the swing can reset under the torsional spring effect, make rotor plate 51 reciprocate the swing, and then can further guide the gas, promote the scope that the gas blown out, promote the drying effect of blowing of soundproof cotton 10.
Preferably, the inner wall of the cabinet body 1 is provided with a dehumidifying sliding device 6, the dehumidifying sliding device 6 comprises a filter plate 61, the inner wall of the filter plate 61 is rotatably connected with a screw rod 62, the surface of the screw rod 62 is in transmission connection with a transmission plate 63, the inner wall of the transmission plate 63 is fixedly connected with a plurality of transmission rods 64, the surface of the transmission rods 64 is in sliding connection with a sliding block 66, the inner wall of the filter plate 61 is provided with a sliding groove 65, and the surface of the sliding block 66 is fixedly connected with a limiting rod 67; the surface of the filter plate 61 is fixedly arranged between the filter plate 8 and the ventilation plate 8, the surface of the transmission plate 63 is in sliding connection with the inner wall of the filter plate 61, the surface of the limiting rod 67 is in contact with the inner wall of the chute 65, the screw rod 62 is driven by an external motor to rotate, the screw rod 62 drives the transmission plate 63 limited by the filter plate 61 to move, the moving transmission plate 63 drives the drying agent in the filter plate 61 to move, the drying agent can further dehumidify the soundproof cotton 10, the transmission plate 63 moves together through the sliding block 66 on the transmission rod 64, the limiting rod 67 on the sliding block 66 is positioned in the chute 65, and therefore the sliding block 66 moves left and right along the chute 65 while moving up and down, so that the drying agent carried by the transmission plate 63 can be pushed to turn, the drying agent is replaced by the water absorbing position and the non-water absorbing position of the drying agent, and the use effect of the drying agent is improved.
According to the working principle, the baffle 2 can be directly inserted into the cabinet body 1 through the clamping strips 21 on the baffle 2 to realize the combination of the cabinet body 1, the cabinet body is convenient to transport after being split, when the soundproof cotton 10 needs to be replaced, the baffle 2 is pulled out, the clamped ventilation plate 8 is detached, the soundproof cotton 10 is replaced, after the replacement is completed, the ventilation plate 8 is pressed on the soundproof cotton 10 again and is clamped into the baffle 2, meanwhile, the through holes are cut through the soundproof cotton 10 directly by the cutting plate 9 on the ventilation plate 8, the soundproof cotton is communicated with the radiating holes on the baffle 2, the cut soundproof cotton 10 only needs to be cleaned out to prevent the radiating holes from being blocked, the soundproof cotton 10 does not need to be automatically sheared according to the radiating holes on the baffle 2, and the soundproof cotton is directly and conveniently and automatically sheared;
when the device is operated, the fan 43 can suck external cold air into the cabinet body 1 and take away heat emitted by the transformer body 7 at the upper and lower positions of the air through the guide of the upper guide plate 42 and the lower guide plate 45, meanwhile, the taken away heat can pass through the ventilation plate 8 and be in contact with the soundproof cotton 10, the soundproof cotton 10 can be dried and dehumidified by hot air, and the environment is prevented from being greatly different in day and night temperature, so that water vapor is generated inside and is in contact with the soundproof cotton 10, and the soundproof cotton 10 is affected by the damp;
the air blown out by the fan 43 contacts with the impeller 53 and pushes the impeller 53 to rotate, the impeller 53 can strike the lug 52 on the rotating plate 51 to enable the rotating plate 51 to swing, and the swinging rotating plate 51 can reset under the action of the torsion spring to enable the rotating plate 51 to swing reciprocally, so that the air can be further guided, the air blowing range is improved, and the blowing and drying effects of the soundproof cotton 10 are improved;
the screw rod 62 is driven to rotate through an external motor, the screw rod 62 can drive the driving plate 63 limited by the filter plate 61 to move, the moving driving plate 63 can drive the drying agent in the filter plate 61 to move, the drying agent can further dehumidify the soundproof cotton 10, the driving plate 63 moves and simultaneously moves together through the sliding block 66 on the driving rod 64, the limiting rod 67 on the sliding block 66 is positioned in the sliding groove 65, and therefore the sliding block 66 can move left and right along the sliding groove 65 while moving up and down by the sliding groove 65, so that the drying agent carried by the driving plate 63 can be pushed to turn, the water absorbing position and the non-water absorbing position of the drying agent are replaced, and the using effect of the drying agent is improved.
The invention provides a combined type multifunctional transformer sound insulation and noise reduction device, the method and the way for realizing the technical scheme are numerous, the above is only the preferred embodiment of the invention, and it should be pointed out that a plurality of improvements and modifications can be made to the person skilled in the art without departing from the principle of the invention, and the improvements and the modifications are also regarded as the protection scope of the invention. The components not explicitly described in this embodiment can be implemented by using the prior art.
Claims (3)
1. The utility model provides a multi-functional transformer sound insulation of combination device of making an uproar falls, includes cabinet body (1), its characterized in that: the novel multifunctional intelligent cabinet temperature control cabinet is characterized in that a clamping strip (21) is slidably connected to the inner wall of the cabinet body (1), a baffle plate (2) is fixedly connected to one side, away from the cabinet body (1), of the clamping strip (21), a revolving door (3) is rotatably installed on the inner wall of the cabinet body (1), a plurality of transformer bodies (7) are installed in the cabinet body (1), an air-permeable plate (8) is clamped to one side, close to the revolving door (3), of the baffle plate (2), an soundproof cotton (10) is installed between the baffle plate (2) and the air-permeable plate (8), a cutting plate (9) is fixedly connected to the inner wall of the air-permeable plate (8), and through holes are cut through the soundproof cotton (10) directly, so that the soundproof cotton is communicated with radiating holes in the baffle plate (2);
the inner wall of the cabinet body (1) is provided with a gas guide device (4), the gas guide device (4) comprises an upper partition plate (41) and a lower partition plate (44), a fan (43) is arranged on the inner walls of the upper partition plate (41) and the lower partition plate (44), an upper guide plate (42) is fixedly connected to the inner wall of the upper partition plate (41), a lower guide plate (45) is fixedly connected to the inner wall of the lower partition plate (44), when the device is in operation, the fan (43) pumps external cold air into the cabinet body (1) and takes away heat emitted by a transformer body (7) at the upper and lower positions through the upper guide plate (42) and the lower guide plate (45), and meanwhile, the taken away heat is in contact with soundproof cotton (10) through a ventilation plate (8);
the rear parts of the upper partition plate (41) and the lower partition plate (44) are fixedly arranged on the inner wall of the cabinet body (1), and the two sides of the upper partition plate (41) and the lower partition plate (44) are in contact with the surface of the ventilation plate (8);
the inner wall at the bottom of the lower guide plate (45) is provided with a swinging plug flow device (5), the swinging plug flow device (5) comprises a rotating plate (51), the top of the rotating plate (51) is fixedly connected with a lug (52), and the inner wall below the lower guide plate (45) is rotatably connected with an impeller (53);
the surface of the rotating plate (51) is rotationally connected with the inner wall at the bottom of the lower guide plate (45) through a torsion spring, and the surface of the impeller (53) is in contact with the surface of the lug (52);
the air blown by the fan (43) contacts with the impeller (53) and pushes the impeller (53) to rotate, the impeller (53) impacts the lug (52) on the rotating plate (51) to enable the rotating plate (51) to swing, and the swinging rotating plate (51) is reset under the action of the torsion spring to enable the rotating plate (51) to swing in a reciprocating mode;
the inner wall of the cabinet body (1) is provided with a dehumidifying sliding device (6), the dehumidifying sliding device (6) comprises a filter plate (61), the inner wall of the filter plate (61) is rotationally connected with a screw rod (62), the surface transmission of the screw rod (62) is connected with a transmission plate (63), the inner wall of the transmission plate (63) is fixedly connected with a plurality of transmission rods (64), the surface of the transmission rod (64) is slidingly connected with a sliding block (66), a sliding groove (65) is formed in the inner wall of the filter plate (61), and the surface of the sliding block (66) is fixedly connected with a limiting rod (67).
2. The combined type multifunctional transformer sound insulation and noise reduction device according to claim 1, wherein: the surface of baffle (2) and the inner wall of cabinet body (1) contact each other, the surface of revolving door (3) and the surface of baffle (2) contact each other, the surface of cutting board (9) and the inner wall of baffle (2) contact each other.
3. The combined type multifunctional transformer sound insulation and noise reduction device according to claim 1, wherein: the surface of the filter plate (61) is fixedly arranged between the surface of the filter plate (61) and the ventilation plate (8), the surface of the transmission plate (63) is in sliding connection with the inner wall of the filter plate (61), and the surface of the limiting rod (67) is in contact with the inner wall of the chute (65).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310097307.7A CN115798894B (en) | 2023-02-10 | 2023-02-10 | Combined type multifunctional transformer sound insulation and noise reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310097307.7A CN115798894B (en) | 2023-02-10 | 2023-02-10 | Combined type multifunctional transformer sound insulation and noise reduction device |
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| Publication Number | Publication Date |
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| CN115798894A CN115798894A (en) | 2023-03-14 |
| CN115798894B true CN115798894B (en) | 2023-05-05 |
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| CN202310097307.7A Active CN115798894B (en) | 2023-02-10 | 2023-02-10 | Combined type multifunctional transformer sound insulation and noise reduction device |
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Citations (2)
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| CN211119955U (en) * | 2019-12-11 | 2020-07-28 | 冉海南 | Noise reduction device for central air-conditioning fan coil |
| CN112700964A (en) * | 2020-12-29 | 2021-04-23 | 广州灰黄电子商务有限公司 | Sound insulation equipment suitable for power capacitor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH094914A (en) * | 1995-06-16 | 1997-01-10 | Mitsubishi Heavy Ind Ltd | Air conditioner |
| JP3098998U (en) * | 2003-07-02 | 2004-03-18 | 学校法人日本大学 | Wind direction change mechanism of air conditioner |
| CN209301048U (en) * | 2018-05-25 | 2019-08-27 | 泉州骆贵贸易有限公司 | A kind of sound-proof material assembling structure of household appliance |
| CN213338574U (en) * | 2020-11-13 | 2021-06-01 | 沈阳科技学院 | Computer noise reduction device |
| CN214795828U (en) * | 2021-06-08 | 2021-11-19 | 武汉市鸿骏四维科技有限公司 | Control cabinet with sound insulation and noise reduction functions |
| CN216016108U (en) * | 2021-11-02 | 2022-03-11 | 广州汇盛自动化科技有限公司 | Ceramic equipment control cabinet with good heat dissipation effect |
| CN114530309A (en) * | 2022-03-09 | 2022-05-24 | 姜兴慧 | Outdoor transformer with bird function is driven to high efficiency |
| CN217652637U (en) * | 2022-05-12 | 2022-10-25 | 江苏金益达消防科技有限公司 | Soundproof door with replaceable soundproof filling layer |
| CN218002706U (en) * | 2022-10-10 | 2022-12-09 | 阿特美斯智能电气有限公司 | Temperature measuring device for bus cabinet |
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2023
- 2023-02-10 CN CN202310097307.7A patent/CN115798894B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211119955U (en) * | 2019-12-11 | 2020-07-28 | 冉海南 | Noise reduction device for central air-conditioning fan coil |
| CN112700964A (en) * | 2020-12-29 | 2021-04-23 | 广州灰黄电子商务有限公司 | Sound insulation equipment suitable for power capacitor |
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| CN115798894A (en) | 2023-03-14 |
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