CN110829223B - Three-level active power filter - Google Patents
Three-level active power filter Download PDFInfo
- Publication number
- CN110829223B CN110829223B CN201911077302.8A CN201911077302A CN110829223B CN 110829223 B CN110829223 B CN 110829223B CN 201911077302 A CN201911077302 A CN 201911077302A CN 110829223 B CN110829223 B CN 110829223B
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- CN
- China
- Prior art keywords
- groove
- close
- shell
- spring
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000009434 installation Methods 0.000 claims abstract description 13
- 230000017525 heat dissipation Effects 0.000 claims description 14
- 239000000428 dust Substances 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000005192 partition Methods 0.000 abstract description 4
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 7
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
- H02B1/48—Mounting of devices therein
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/20—Active power filtering [APF]
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Battery Mounting, Suspending (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a three-level active power filter which comprises a shell and a first spring, wherein support legs are fixed at four corners of the bottom of the shell, a power supply chamber is arranged inside the shell, a control chamber is arranged at the top of the shell close to the power supply chamber, the power supply chamber and the control chamber are isolated through a partition plate, an installation seat is fixed at the bottom of the power supply chamber, an installation groove is arranged at the upper end of the installation seat, ball grooves are arranged on two sides of the installation seat close to the bottom of the installation groove, and balls are arranged inside the ball grooves. This active power filter of three levels is provided with pin and first spring, removes the battery, and the battery gets into the mounting groove when inside, and the battery is impressed the pin inside in pin groove, and first spring compression, inside the battery drove the slide and gets into the spout, and when the battery got into the mounting groove completely, first spring popped out the pin, avoided the battery to move back, was convenient for fix the battery inside the mounting groove.
Description
Technical Field
The invention relates to the technical field of power filters, in particular to a three-level active power filter.
Background
The active power filter is a novel power electronic device for dynamically inhibiting harmonic waves and compensating reactive power, can compensate harmonic waves with variable size and frequency and variable reactive power, and is internally provided with a power supply.
Although the existing three-level active power filter has a large number of types and quantities, the existing three-level active power filter still has certain problems, and certain inconvenience is brought to the use of the three-level active power filter.
The existing three-level active power filter is inconvenient to install an internal storage battery when in use, generates a large amount of heat when in use, and needs to be cooled through air cooling or water cooling, and the existing air cooling structure can bring dust in the outside air into the box body, so that the three-level active power filter is inconvenient to use.
Disclosure of Invention
The invention aims to provide a three-level active power filter, which solves the problems that the conventional three-level active power filter proposed by the background art is inconvenient to install an internal storage battery when in use, generates a large amount of heat when in use, needs air cooling or water cooling for cooling, and brings dust in the outside air into a box body by using the conventional air cooling structure, so that the conventional three-level active power filter is inconvenient to use.
In order to achieve the purpose, the invention provides the following technical scheme: a three-level active power filter comprises a shell and a first spring, wherein supporting legs are fixed at four corners of the bottom of the shell, a power supply chamber is arranged inside the shell, a control chamber is arranged at the top of the shell close to the power supply chamber, wherein,
the power supply chamber is isolated from the control chamber through a partition plate, a mounting seat is fixed at the bottom of the power supply chamber, a mounting groove is formed in the upper end of the mounting seat, ball grooves are formed in two sides of the bottom, close to the mounting groove, of the mounting seat, balls are arranged inside the ball grooves, sliding grooves are formed in two sides, close to the mounting groove, of the mounting seat, a storage battery is arranged inside the mounting groove, a sliding plate is fixed on one side, close to the sliding grooves, of the storage battery, and a stop rod groove is formed in one end, close to the storage battery, of the;
the first spring is located inside the blocking rod groove, the blocking rod is connected to the side, close to the blocking rod groove, of the first spring, a heat dissipation groove is formed in the top of the control chamber, an installation plate is fixed to one side, close to the heat dissipation groove, of the control chamber, a motor is installed on one side, close to the heat dissipation groove, of the installation plate, fan blades are installed on one side, close to the heat dissipation groove, of the motor, openings are formed in two sides, close to the power supply chamber, of the shell, connecting grooves are formed in the upper side and the lower side, close to the openings, of the shell, a dust guard is arranged inside the openings, two ends of the dust guard are located inside the connecting;
the utility model discloses a dustproof dust removal device, including shell, fixed rod groove, dust guard, push rod, baffle, first spring, second spring, push rod groove, the push rod groove has been seted up to one side that the shell is close to the fixed rod groove, the fixed groove has been seted up to one side that the dust guard is close to the fixed rod groove, the inside in fixed rod groove is provided with the dead lever, the inside in push rod groove is provided with the push rod, one side that the shell is kept.
Preferably, the inner diameter of the ball groove is matched with the outer diameter of the ball, and the ball groove and the ball form a rolling structure.
Preferably, the sliding chute is matched with the sliding plate in size, and the sliding chute and the sliding plate form a sliding structure.
Preferably, the stop lever and the mounting seat form an elastic structure through a first spring.
Preferably, the motor is fixedly connected with the mounting plate through a bolt.
Preferably, the vertical distance from the fan blade end point to the central axis of the motor is less than one half of the inner diameter of the heat dissipation groove.
Preferably, the distance from the baffle to the shell is greater than the length of the fixing rod entering the fixing groove.
Preferably, the inner diameter of the second spring is smaller than the outer diameter of the baffle, and the outer diameter of the second spring is larger than the inner diameter of the push rod groove.
Compared with the prior art, the invention has the beneficial effects that: the three-level active power filter:
1. the storage battery is moved, when the storage battery enters the mounting groove, the storage battery presses the stop lever into the stop lever groove, the first spring is compressed, the storage battery drives the sliding plate to enter the sliding groove, when the storage battery completely enters the mounting groove, the first spring ejects the stop lever, the storage battery is prevented from moving backwards, and the storage battery is convenient to fix in the mounting groove;
2. the dustproof plate and the fixed rod are arranged, the baffle is pressed to enable the fixed rod to be far away from the connecting groove, meanwhile, the second spring is compressed, after the two ends of the dustproof plate completely enter the connecting groove, the fixed rod groove is just aligned with the fixed groove, the baffle is loosened, the second spring drives the baffle to move, the baffle drives the fixed rod to enter the fixed groove through the push rod, and therefore the dustproof plate is convenient to fix;
3. be provided with spout and slide, when the battery removed at the mounting groove, the battery drove the slide and slides in the spout, through the sliding structure that spout and slide constitute, avoided the removal of battery to produce the skew.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
fig. 3 is a schematic view of a battery mounting structure according to the present invention.
In the figure: 1. the casing, 2, the stabilizer blade, 3, the power supply room, 4, the control room, 5, the baffle, 6, the mount pad, 7, the mounting groove, 8, the ball groove, 9, the ball, 10, the spout, 11, the battery, 12, the slide, 13, the gear groove, 14, first spring, 15, the pin, 16, the mounting panel, 17, the radiating groove, 18, the motor, 19, the flabellum, 20, the opening, 21, the spread groove, 22, the dust guard, 23, the fixed rod groove, 24, the push rod groove, 25, the fixed slot, 26, the dead lever, 27, the push rod, 28, the baffle, 29, the second spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a three-level active power filter comprises a shell 1, support legs 2, a power supply chamber 3, a control chamber 4, a partition plate 5, a mounting seat 6, a mounting groove 7, a ball groove 8, balls 9, a sliding groove 10, a storage battery 11, a sliding plate 12, a stop lever groove 13, a first spring 14, a stop lever 15, a mounting plate 16, a heat dissipation groove 17, a motor 18, fan blades 19, an opening 20, a connecting groove 21, a dust-proof plate 22, a fixing lever groove 23, a push rod groove 24, a fixing groove 25, a fixing rod 26, a push rod 27, a baffle 28 and a second spring 29, wherein the support legs 2 are fixed at four corners of the bottom of the shell 1, the power supply chamber 3 is arranged inside the shell 1, the control chamber 4 is arranged at the top of the shell 1 close to the power supply chamber 3,
the power supply chamber 3 is separated from the control chamber 4 through a partition plate 5, a mounting seat 6 is fixed at the bottom of the power supply chamber 3, a mounting groove 7 is formed in the upper end of the mounting seat 6, ball grooves 8 are formed in two sides of the bottom, close to the mounting groove 7, of the mounting seat 6, the inner diameter of each ball groove 8 is matched with the outer diameter of each ball 9, each ball groove 8 and each ball 9 form a rolling structure, when the storage battery 11 moves in the mounting groove 7, the storage battery 11 drives the balls 9 to roll in the ball grooves 8, sliding friction between the storage battery 11 and the mounting groove 7 is replaced by rolling friction generated by the balls 9 and the storage battery 11, friction generated by movement of the storage battery 11 is effectively reduced, the balls 9 are arranged inside the ball grooves 8, sliding grooves 10 are formed in two sides, close to the mounting groove 7, of the mounting seat 6, and the sliding grooves 10 are matched with the size of, the sliding chute 10 and the sliding plate 12 form a sliding structure, when the storage battery 11 moves in the installation groove 7, the storage battery 11 drives the sliding plate 12 to slide in the sliding chute 10, the sliding structure formed by the sliding chute 10 and the sliding plate 12 avoids the deviation generated by the movement of the storage battery 11, the storage battery 11 is arranged in the installation groove 7, the sliding plate 12 is fixed on one side of the storage battery 11 close to the sliding chute 10, and one end of the installation groove 7 close to the storage battery 11 is provided with a stop rod groove 13;
the first spring 14 is located inside the catch bar groove 13, the opening side of the first spring 14 close to the catch bar groove 13 is connected with the catch bar 15, the catch bar 15 and the mounting seat 6 form an elastic structure through the first spring 14, when the storage battery 11 enters the inside of the mounting groove 7, the storage battery 11 presses the catch bar 15 into the inside of the catch bar groove 13, the first spring 14 compresses, when the storage battery 11 completely enters the inside of the mounting groove 7, the first spring 14 pops out the catch bar 15, the storage battery 11 is prevented from moving backwards, the storage battery 11 is convenient to be fixed inside the mounting groove 7, the radiating groove 17 is opened at the top of the control chamber 4, one side of the control chamber 4 close to the radiating groove 17 is fixed with the mounting plate 16, one side of the mounting plate 16 close to the radiating groove 17 is provided with the motor 18, the motor 18 is fixedly connected with the mounting plate 16 through a bolt, one side of the motor 18 close to the radiating groove, the vertical distance from the end point of the fan blade 19 to the central axis of the motor 18 is less than one half of the inner diameter of the heat dissipation groove 17, when the motor 18 drives the fan blade 19 to rotate in the heat dissipation groove 17, the fan blade 19 is prevented from colliding with the inner wall of the heat dissipation groove 1, openings 20 are formed in two sides, close to the power supply chamber 3, of the shell 1, connecting grooves 21 are formed in the upper side and the lower side, close to the openings 20, of the shell 1, a dustproof plate 22 is arranged inside the openings 20, two ends of the dustproof plate 22 are located inside the connecting grooves 21, and a fixing rod groove 23 is formed in one side, close;
a push rod groove 24 is formed in one side, close to the fixing rod groove 23, of the shell 1, a fixing groove 25 is formed in one side, close to the fixing rod groove 23, of the dust guard 22, a fixing rod 26 is arranged inside the fixing rod groove 23, a push rod 27 is arranged inside the push rod groove 24, a baffle 28 is fixed on one side, far away from the shell 1, of the push rod 27, the distance from the baffle 28 to the shell 1 is larger than the length of the fixing rod 26 entering the fixing groove 25, the baffle 28 is pressed, the baffle 28 drives the fixing rod 26 to start to leave the inside of the fixing groove 25 through the push rod 27, the distance from the baffle 28 to the shell 1 is larger than the length of the fixing rod 26 entering the fixing groove 25, the fixing rod 26 can be completely moved out of the inside of the fixing groove 25, a second spring 29 is sleeved on the push rod 27 between the baffle 28 and the shell 1, the inner diameter of the second spring 29 is smaller, when the baffle 28 is pressed, the second spring 29 is prevented from being separated from the baffle 28 and the push rod 27, and the second spring 29 is prevented from entering the inner part of the push rod groove 24, so that the baffle 28 drives the second spring 29 to compress, and the second spring 29 generates elastic force.
The working principle is as follows: when the three-level active power filter is used, firstly, the box door is opened, the stop lever 15 is pressed into the stop lever groove 13, the storage battery 11 is moved out of the mounting groove 7, the storage battery 11 drives the balls 9 to roll in the ball grooves 8, meanwhile, the storage battery 11 drives the sliding plate 12 to move in the sliding groove 10, a new storage battery 11 is replaced, the storage battery 11 is moved, when the storage battery 11 enters the mounting groove 7, the stop lever 15 is pressed into the stop lever groove 13 by the storage battery 11, the first spring 14 is compressed, the storage battery 11 drives the sliding plate 12 to enter the sliding groove 10, when the storage battery 11 completely enters the mounting groove 7, the first spring 14 ejects the stop lever 15 to prevent the storage battery 11 from moving backwards, the storage battery 11 is conveniently fixed inside the mounting groove 7, then the stop lever 28 is pressed, the stop lever 28 drives the fixing rod 26 to leave the inside the fixing groove 25 through the push rod 27, and the dustproof, cleaning the dust-proof plate 22, then pressing the baffle 28, making the fixed rod 26 keep away from the connecting groove 21, making the second spring 29 compress, after the two ends of the dust-proof plate 22 completely enter the inside of the connecting groove 21, the fixed rod groove 23 just aligns with the fixed groove 25, loosening the baffle 28, the second spring 29 drives the baffle 28 to move, the baffle 28 drives the fixed rod 26 to enter the inside of the fixed groove 25 through the push rod 27, so as to fix the dust-proof plate 22, then closing the box door, starting the motor 18, the motor 18 drives the fan blade 19 to rotate, discharging the air in the box body, the outside air enters the box body through the opening 20, meanwhile, the air is filtered through the dust-proof plate 22, and the dust is prevented from entering the inside of the housing 1.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (6)
1. A three-level active power filter comprising a housing (1) and a first spring (14), characterized in that: the four corners of the bottom of the shell (1) are fixed with support legs (2), the interior of the shell (1) is provided with a power supply chamber (3), the top of the shell (1) close to the power supply chamber (3) is provided with a control chamber (4), wherein,
the power supply chamber (3) and the control chamber (4) are isolated by a clapboard (5), an installation seat (6) is fixed at the bottom of the power supply chamber (3), an installation groove (7) is arranged at the upper end of the installation seat (6), the two sides of the bottom of the mounting seat (6) close to the mounting groove (7) are provided with ball grooves (8), the ball (9) is arranged in the ball groove (8), the inner diameter of the ball groove (8) is matched with the outer diameter of the ball (9), and the ball groove (8) and the ball (9) form a rolling structure, the two sides of the mounting seat (6) close to the mounting groove (7) are provided with sliding grooves (10), a storage battery (11) is arranged in the mounting groove (7), a sliding plate (12) is fixed on one side of the storage battery (11) close to the sliding groove (10), one end of the mounting groove (7) close to the storage battery (11) is provided with a stop rod groove (13);
the first spring (14) is positioned inside the blocking rod groove (13), the blocking rod (15) is connected with the first spring (14) close to the opening side of the blocking rod groove (13), the top of the control chamber (4) is provided with a heat dissipation groove (17), one side of the control chamber (4) close to the heat dissipation groove (17) is fixed with a mounting plate (16), a motor (18) is arranged on one side of the mounting plate (16) close to the heat dissipation groove (17), one side of the motor (18) close to the heat dissipation groove (17) is provided with a fan blade (19), the two sides of the shell (1) close to the power supply chamber (3) are provided with openings (20), the upper and lower sides of the shell (1) close to the opening (20) are provided with connecting grooves (21), a dustproof plate (22) is arranged in the opening (20), two ends of the dustproof plate (22) are positioned in the connecting groove (21), a fixed rod groove (23) is formed in one side, close to the connecting groove (21), of the shell (1);
the utility model discloses a dustproof cover for automobile engine, including shell (1), fixed rod groove (23), push rod groove (24) have been seted up to one side that shell (1) is close to fixed rod groove (23), fixed slot (25) have been seted up to one side that dust guard (22) are close to fixed rod groove (23), the inside in fixed rod groove (23) is provided with dead lever (26), the inside in push rod groove (24) is provided with push rod (27), one side that shell (1) were kept away from in push rod (27) is fixed with baffle (28), the cover has second spring (29) on push rod (27) between baffle (28) and shell (1), the internal diameter of second spring (29) is less than the external diameter of baffle (28), and the external diameter of second spring (29) is greater than the internal diameter in push rod.
2. A three-level active power filter according to claim 1, characterized in that: the sliding chute (10) is matched with the sliding plate (12) in size, and the sliding chute (10) and the sliding plate (12) form a sliding structure.
3. A three-level active power filter according to claim 1, characterized in that: the stop lever (15) and the mounting seat (6) form an elastic structure through a first spring (14).
4. A three-level active power filter according to claim 1, characterized in that: the motor (18) is fixedly connected with the mounting plate (16) through bolts.
5. A three-level active power filter according to claim 1, characterized in that: the vertical distance from the end point of the fan blade (19) to the central axis of the motor (18) is less than one half of the inner diameter of the heat dissipation groove (17).
6. A three-level active power filter according to claim 1, characterized in that: the distance between the baffle (28) and the shell (1) is larger than the length of the fixing rod (26) entering the fixing groove (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911077302.8A CN110829223B (en) | 2019-11-06 | 2019-11-06 | Three-level active power filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911077302.8A CN110829223B (en) | 2019-11-06 | 2019-11-06 | Three-level active power filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110829223A CN110829223A (en) | 2020-02-21 |
| CN110829223B true CN110829223B (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911077302.8A Expired - Fee Related CN110829223B (en) | 2019-11-06 | 2019-11-06 | Three-level active power filter |
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| Country | Link |
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| CN (1) | CN110829223B (en) |
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| CN207947523U (en) * | 2017-11-07 | 2018-10-09 | 重庆鼎满科技发展有限公司 | A kind of dust-proof radiating power control cabinet |
| CN208028381U (en) * | 2018-01-31 | 2018-10-30 | 天津市俊达新源电气设备有限公司 | A kind of heat dissipation power distribution box being conveniently replaceable Air Filter |
| CN208284795U (en) * | 2018-06-25 | 2018-12-25 | 许昌市长江高压计量设备有限公司 | A kind of box type transformer having dustproof and waterproof function |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206211377U (en) * | 2016-12-02 | 2017-05-31 | 扬州新扬开关设备有限公司 | A kind of active power filtering power cabinet |
| CN206930648U (en) * | 2017-07-13 | 2018-01-26 | 孙均辉 | A kind of collection device of wasted nickel catalyst |
| CN207782239U (en) * | 2018-01-16 | 2018-08-28 | 广州市超盛医疗器械有限公司 | A kind of distribution box of detachable dustproof net |
| CN208142648U (en) * | 2018-05-14 | 2018-11-23 | 武汉鑫诚欣科技有限公司 | A kind of intelligent power control cabinet |
| CN208707866U (en) * | 2018-10-23 | 2019-04-05 | 江苏河海乾诚智能科技有限公司 | A kind of dustproof computer speaker |
| CN209088311U (en) * | 2018-12-14 | 2019-07-09 | 深圳泉欣诚科技有限公司 | It is a kind of it is for building can dust-proof radiating electric power cabinet |
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2019
- 2019-11-06 CN CN201911077302.8A patent/CN110829223B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207947523U (en) * | 2017-11-07 | 2018-10-09 | 重庆鼎满科技发展有限公司 | A kind of dust-proof radiating power control cabinet |
| CN208028381U (en) * | 2018-01-31 | 2018-10-30 | 天津市俊达新源电气设备有限公司 | A kind of heat dissipation power distribution box being conveniently replaceable Air Filter |
| CN208284795U (en) * | 2018-06-25 | 2018-12-25 | 许昌市长江高压计量设备有限公司 | A kind of box type transformer having dustproof and waterproof function |
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| CN110829223A (en) | 2020-02-21 |
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