CN112018635A - Moisture-proof device for electric equipment - Google Patents

Moisture-proof device for electric equipment Download PDF

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Publication number
CN112018635A
CN112018635A CN202010655719.4A CN202010655719A CN112018635A CN 112018635 A CN112018635 A CN 112018635A CN 202010655719 A CN202010655719 A CN 202010655719A CN 112018635 A CN112018635 A CN 112018635A
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CN
China
Prior art keywords
moisture
proof
dust
panel
electrical equipment
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Granted
Application number
CN202010655719.4A
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Chinese (zh)
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CN112018635B (en
Inventor
王志飞
王磊
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Anhui Jinyu Technology Development Co ltd
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Anhui Jinyu Technology Development Co ltd
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Priority to CN202010655719.4A priority Critical patent/CN112018635B/en
Publication of CN112018635A publication Critical patent/CN112018635A/en
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Publication of CN112018635B publication Critical patent/CN112018635B/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/56Cooling; Ventilation
    • H02B1/565Cooling; Ventilation for cabinets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/28Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/30Cabinet-type casings; Parts thereof or accessories therefor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/30Cabinet-type casings; Parts thereof or accessories therefor
    • H02B1/32Mounting of devices therein

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Patch Boards (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The invention discloses a moisture-proof device for electrical equipment, which comprises a power distribution cabinet, a fixing part and a moisture-proof dust removal box, wherein the moisture-proof dust removal box comprises a panel, a shell, a dust removal assembly and a moisture-proof assembly. According to the invention, the dust-proof plate arranged in the dust-removing component is used for preventing dust from entering the electric equipment to interfere the electric equipment, the air cylinder is used for driving the brush to regularly clean the dust-proof plate, the dust is prevented from being accumulated on the surface of the dust-proof plate, the dust-proof effect is weakened, meanwhile, the moisture absorption component arranged in the moisture-proof component is used for absorbing moisture in the air, the air with overlarge humidity is prevented from entering the electric equipment to damage the equipment, the motor is used for driving the moisture absorption component to rotate, so that the drying agent can fully absorb the moisture, meanwhile, the drying agent can be uniformly absorbed through stirring of the stirring rod, and the moisture-proof dust-removing box is detachably mounted, so that the cleaning and.

Description

Moisture-proof device for electric equipment
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a moisture-proof device for the electrical equipment.
Background
When the electrical equipment works, for convenient maintenance and maintenance, the electrical equipment is arranged in the box body, when the electrical equipment is in a humid environment, a large amount of humid gas is contained in the box body, the gas can generate condensation on the box body, the short circuit damage of the electrical equipment in the cabinet body can be avoided by preventing the condensation, the stable supply of electric power is ensured, the existing equipment for dehumidifying the air mostly adopts drying agents, but the drying agents easily absorb moisture at through holes, the drying agents positioned in the inner part are difficult to be fully applied due to the contact with the air and the dehumidification of the air by external drying agents, the drying agents positioned on the outer side excessively absorb moisture, and caking is easily generated, so that the integral dehumidifying effect of the device is poor, and when the dust in the external environment is excessive, the insulation of internal electric components can be reduced when the drying agents enter the box body, the heat dissipation of the electric control cabinet can be influenced, so that the internal temperature of the electric control cabinet is increased.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a moisture-proof device for electrical equipment, which can prevent dust and remove moisture, and provide a good environment for the electrical equipment to work.
The moisture-proof device for the electrical equipment comprises a power distribution cabinet, a fixing piece and a moisture-proof dust removal box, wherein a mounting groove is formed in one side of the power distribution cabinet, the moisture-proof dust removal box is detachably mounted in the mounting groove through the fixing piece, the moisture-proof dust removal box comprises a panel, a shell, a dust removal assembly and a moisture-proof assembly, the panel is mounted on the outer side of the mounting groove, the shell is mounted in the mounting groove, the dust removal assembly and the moisture-proof assembly are sequentially mounted in the shell from the outer side of the mounting groove to the inner side of the mounting groove, and a vent used for being communicated with the outside is formed in.
Preferably, the dust removal subassembly includes dust guard, cylinder, brush, the dust guard is installed the casing is inside to be close to one side of panel, the dust guard is close to both ends are installed at both ends about one side of panel and are installed the installation piece, the spout has been seted up to the installation piece, but both ends slidable mounting is in about the brush inside the spout, the filtration pore has evenly been seted up to the dust guard, brush head one end is installed in the one side that is close to the filtration pore, the cylinder is used for the drive the brush is followed the spout slides.
Preferably, the hairbrushes are arranged in two groups, the two groups of hairbrushes are symmetrically distributed along the center line of the sliding groove, the two groups of air cylinders correspond to the hairbrushes, the air cylinders are arranged on two sides of the dust guard, and the telescopic ends of the air cylinders are connected with the hairbrushes.
Preferably, the moisture-proof component comprises a moisture-proof plate, a moisture absorption component and a motor, the moisture-proof plate is installed on one side of the panel away from the inside of the shell, the moisture absorption component is rotatably installed on one side of the panel close to the moisture-proof plate, the motor is installed on one side of the panel away from the moisture-proof plate, and the motor is in transmission connection with the moisture absorption component.
Preferably, moisture absorption component includes horn type shell, dampproofing mouth has been seted up to the dampproofing board, horn type shell is rotatable to be installed dampproofing mouth is close to one side of panel, the inlet port has been seted up on the horn type shell outer wall, horn type shell is inside to be filled there is the drier.
Preferably, the horn-shaped shell is internally provided with a stirring rod matched with the horn-shaped shell in shape, and the stirring rod is fixedly installed on the moisture-proof opening.
Preferably, the horn-shaped shell is close to and the belt pulley is installed to one side of dampproofing mouthful installation department, motor pass through the belt with horn-shaped shell transmission is connected.
Preferably, the mounting includes a fixed section of thick bamboo, fixed block, the inside slidable mounting of a fixed section of thick bamboo has the stopper, the stopper with fixed section of thick bamboo is inside to pass through spring coupling, the fixed block is installed the stopper is kept away from one side of spring mounting department.
According to the invention, the dust-proof plate arranged in the dust-removing component is used for preventing dust from entering the electric equipment to interfere the electric equipment, the air cylinder is used for driving the brush to regularly clean the dust-proof plate, the dust is prevented from being accumulated on the surface of the dust-proof plate, the dust-proof effect is weakened, meanwhile, the moisture in the air is adsorbed by the moisture absorption component arranged in the moisture-proof component, the air with overlarge humidity is prevented from entering the electric equipment to damage the equipment, the moisture absorption component is driven to rotate by the motor, the drying agent is enabled to rotate under the action of gravity, the moisture can be fully absorbed by the drying agent, meanwhile, the drying agent can be uniformly absorbed by stirring of the stirring rod, the phenomenon that the local moisture absorption of the drying agent is excessive.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a moisture-proof device for electrical equipment according to the present invention;
FIG. 2 is a schematic structural view of the moisture and dust proof box according to the present invention;
FIG. 3 is a schematic structural diagram of a dust removing assembly according to the present invention;
FIG. 4 is a schematic view of the moisture barrier assembly of the present invention;
FIG. 5 is a cross-sectional view taken at A of FIG. 4 in accordance with the teachings of the present invention;
fig. 6 is a schematic structural diagram of a fixing member according to the present invention.
In the figure: 1-power distribution cabinet, 2-fixed part, 3-moisture-proof dust removal box, 21-fixed cylinder, 22-limit plate, 23-fixed block, 24-spring, 31-ventilation opening, 32-panel, 33-shell, 341-dust-proof plate, 342-cylinder, 343-filter hole, 344-brush, 345-installation block, 346-chute, 351-moisture-proof plate, 352-horn-shaped shell, 353-belt pulley, 354-belt, 355-motor, 356-stirring rod and 357-air inlet hole.
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.
Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-6, an electrical equipment moisture-proof device comprises a power distribution cabinet 1, a fixing member 2 and a moisture-proof dust removal box 3, wherein a mounting groove is formed in one side of the power distribution cabinet 1, the moisture-proof dust removal box 3 is detachably mounted inside the mounting groove through the fixing member 2, the moisture-proof dust removal box 3 comprises a panel 32, a shell 33, a dust removal assembly and a moisture-proof assembly, the panel 32 is mounted outside the mounting groove, the shell 33 is mounted inside the mounting groove, the dust removal assembly and the moisture-proof assembly are sequentially mounted inside the shell 33 from the outside of the mounting groove to the inside of the mounting groove; the dust removing assembly comprises a dust guard 341, a cylinder 342 and a brush 344, the dust guard 341 is installed at one side close to the panel 32 in the shell 33, the upper end and the lower end of one side of the dust guard 341 close to the panel 32 are provided with installation blocks 345, the installation blocks 345 are provided with sliding grooves 346, the upper end and the lower end of the brush 344 can be slidably installed in the sliding grooves 346, the dust guard 341 is uniformly provided with filter holes 343, one end of the brush head of the brush 344 is installed at one side close to the filter holes 343, and the cylinder 342 is used for driving the brush 344 to slide along the; the two groups of brushes 344 are symmetrically distributed along the central line of the sliding groove 346, the two groups of air cylinders 342 are arranged corresponding to the brushes 344, the air cylinders 342 are arranged on two sides of the dust-proof plate 341, and the telescopic ends of the air cylinders 342 are connected with the brushes 344; the moisture-proof assembly comprises a moisture-proof plate 351, a moisture absorption assembly and a motor 355, wherein the moisture-proof plate 351 is arranged on one side, far away from the panel 32, in the shell 33, the moisture absorption assembly is rotatably arranged on one side, close to the panel 32, of the moisture-proof plate 351, the motor 355 is arranged on one side, far away from the panel 32, of the moisture-proof plate 351, and the motor 355 is in transmission connection with the moisture absorption assembly; the moisture absorption assembly comprises a horn-shaped shell 352, the moisture-proof plate 351 is provided with a moisture-proof port, the horn-shaped shell 352 is rotatably arranged on one side of the moisture-proof port close to the panel 32, the outer wall of the horn-shaped shell 352 is provided with an air inlet hole 357, and a drying agent is filled in the horn-shaped shell 352; a stirring rod 356 which is matched with the horn-shaped shell 352 in shape is arranged in the horn-shaped shell 352, and the stirring rod 356 is fixedly installed with the moisture-proof opening; a belt pulley 353 is arranged on one side of the horn-shaped shell 352 close to the installation position of the moisture-proof opening, and the motor 355 is in transmission connection with the horn-shaped shell 352 through a belt 354; the fixing part 2 comprises a fixing barrel 21 and a fixing block 23, a limiting block 22 is slidably mounted inside the fixing barrel 21, the limiting block 22 is connected with the inside of the fixing barrel 21 through a spring 24, and the fixing block 23 is mounted on one side, far away from the mounting position of the spring 24, of the limiting block 22.
During operation, the damp-proof dust removal box 3 presses the fixing block 23 back to the inside of the fixing cylinder 21, the damp-proof dust removal box 3 is installed inside the installation groove, the fixing block 23 is ejected out under the action of the spring 24 to fix the damp-proof dust removal box, air enters from the vent 31, dust is filtered at the filter holes 343 of the dust guard 341, the filtered air enters the moisture absorption assembly through the filter holes 343 and enters the horn-shaped shell 352 through the air inlet 357, the air is dehumidified through the desiccant filled inside, meanwhile, the motor 355 rotates to drive the horn-shaped shell 352 to rotate, so that the desiccant rotates along the inner wall under the action of gravity, the air contact area is increased, the stirring rod 356 inside aggravates the motion of the desiccant, the local moisture absorption of the desiccant is avoided, the waste of the desiccant is not only caused, and the desiccant is prevented from being located at the through hole to absorb moisture regularly and cause caking, and the, the surface of the dust-proof plate 341 is cleaned by the brush 344.
To sum up, this electrical equipment dampproof device prevents through the inside dust guard that sets up of dust removal subassembly that the dust from getting into electrical equipment inside and disturbing electrical equipment, and drive the brush through the cylinder and regularly clean the dust guard, prevent that the dust from piling up on the dust guard surface, weaken dustproof effect, moisture in the air is adsorbed through the inside moisture absorption subassembly that sets up of dampproofing subassembly simultaneously, prevent that the too big air of humidity from getting into electrical equipment inside and causing the damage to equipment, it rotates to drive moisture absorption subassembly through the motor, make the drier rotatory under the action of gravity, make the drier can fully absorb moisture, make the drier evenly absorb through the puddler stirring simultaneously, avoid the local excessive moisture absorption of drier, and dampproofing dust removal case is demountable installation, be convenient for clear up and maintain.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (8)

1. The utility model provides an electrical equipment dampproof device which characterized in that: including switch board, mounting, dampproofing dust removal case, the mounting groove has been seted up to switch board one side, dampproofing dust removal case passes through mounting demountable installation is in inside the mounting groove, dampproofing dust removal case includes panel, casing, dust removal subassembly, dampproofing subassembly, the panel mounting is in the mounting groove outside, the casing is installed inside the mounting groove, the casing inside by the mounting groove outside extremely install in proper order in the mounting groove inboard side the dust removal subassembly dampproofing subassembly, the vent that is used for with external intercommunication is seted up to the panel.
2. The electrical equipment moisture barrier of claim 1, wherein: the dust removal assembly comprises a dust guard, a cylinder and a brush, the dust guard is installed inside the shell and close to one side of the panel, the dust guard is close to the upper end and the lower end of one side of the panel, an installation block is installed at the upper end and the lower end of the panel, a sliding groove is formed in the installation block, the upper end and the lower end of the brush are slidably installed inside the sliding groove, filter holes are evenly formed in the dust guard, one end of the brush head of the brush is installed on one side close to the filter holes, and the cylinder is used for driving the brush to slide along.
3. The electrical equipment moisture barrier of claim 2, wherein: the dust guard is characterized in that the hairbrushes are arranged in two groups, the hairbrushes are symmetrically distributed along the center line of the sliding groove, the air cylinders correspond to the hairbrushes in two groups, the air cylinders are arranged on two sides of the dust guard, and the telescopic ends of the air cylinders are connected with the hairbrushes.
4. The electrical equipment moisture barrier of claim 1, wherein: the moisture-proof assembly comprises a moisture-proof plate, a moisture absorption assembly and a motor, the moisture-proof plate is installed on one side, away from the panel, of the shell, the moisture absorption assembly is rotatably installed on one side, close to the panel, of the moisture-proof plate, the motor is installed on one side, away from the panel, of the moisture-proof plate, and the motor is in transmission connection with the moisture absorption assembly.
5. The electrical equipment moisture barrier of claim 4, wherein: moisture absorption subassembly includes horn type shell, dampproofing board has seted up damp-proof mouth, horn type shell is rotatable to be installed dampproofing mouth is close to one side of panel, the inlet port has been seted up on the horn type shell outer wall, the inside packing of horn type shell has the drier.
6. The electrical equipment moisture barrier of claim 5, wherein: the horn-shaped shell is internally provided with a stirring rod matched with the horn-shaped shell in shape, and the stirring rod is fixedly installed with the moisture-proof opening.
7. The electrical equipment moisture barrier of claim 5, wherein: the horn-shaped shell is close to with the belt pulley is installed to one side of dampproofing mouthful installation department, motor pass through the belt with horn-shaped shell transmission is connected.
8. The electrical equipment moisture barrier of claim 1, wherein: the mounting is including a fixed section of thick bamboo, fixed block, the inside slidable mounting of a fixed section of thick bamboo has the stopper, the stopper with fixed section of thick bamboo is inside to pass through spring coupling, the fixed block is installed the stopper is kept away from one side of spring mounting department.
CN202010655719.4A 2020-07-09 2020-07-09 Moisture-proof device for electric equipment Active CN112018635B (en)

Priority Applications (1)

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CN202010655719.4A CN112018635B (en) 2020-07-09 2020-07-09 Moisture-proof device for electric equipment

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Application Number Priority Date Filing Date Title
CN202010655719.4A CN112018635B (en) 2020-07-09 2020-07-09 Moisture-proof device for electric equipment

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CN112018635A true CN112018635A (en) 2020-12-01
CN112018635B CN112018635B (en) 2022-05-24

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112952725A (en) * 2021-01-29 2021-06-11 云南电网有限责任公司电力科学研究院 Cable pit dehumidifier
CN113472134A (en) * 2021-05-27 2021-10-01 淮南万泰电子股份有限公司 Mining flame proof Variable Frequency Speed Governing (VFSG) all-in-one
CN114721183A (en) * 2022-03-12 2022-07-08 深圳市骏通电子科技有限公司 LED backlight driving device, LED backlight module and liquid crystal display screen
CN117438914A (en) * 2023-12-18 2024-01-23 本溪钢铁(集团)信息自动化有限责任公司 Dampproofing electric control box casing

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Publication number Priority date Publication date Assignee Title
CN106595260A (en) * 2016-10-25 2017-04-26 无锡市跨克微营养素有限公司 Drying mechanism for drying agents
EP3324716A2 (en) * 2016-10-27 2018-05-23 Rodolfo Caciolli System for the cooling of heat-producing electronic components
CN208047047U (en) * 2018-02-08 2018-11-02 张钦文 A kind of energy conservation and environmental protection electronic instrument ventilating dust-arrester
CN208425077U (en) * 2018-05-17 2019-01-22 南京晶能新能源智能汽车制造有限公司 A kind of license plate scanning device of car networking
CN209710481U (en) * 2018-11-09 2019-11-29 寿光天顺达农业科技有限公司 Circuit safety device of liquid manure all-in-one
CN210040956U (en) * 2019-07-23 2020-02-07 南京健顺电器控制设备有限公司 Feeder cabinet with dust removal and moisture prevention functions
CN210350432U (en) * 2019-08-29 2020-04-17 陕西美成电气成套设备有限公司 Switch cabinet

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106595260A (en) * 2016-10-25 2017-04-26 无锡市跨克微营养素有限公司 Drying mechanism for drying agents
EP3324716A2 (en) * 2016-10-27 2018-05-23 Rodolfo Caciolli System for the cooling of heat-producing electronic components
CN208047047U (en) * 2018-02-08 2018-11-02 张钦文 A kind of energy conservation and environmental protection electronic instrument ventilating dust-arrester
CN208425077U (en) * 2018-05-17 2019-01-22 南京晶能新能源智能汽车制造有限公司 A kind of license plate scanning device of car networking
CN209710481U (en) * 2018-11-09 2019-11-29 寿光天顺达农业科技有限公司 Circuit safety device of liquid manure all-in-one
CN210040956U (en) * 2019-07-23 2020-02-07 南京健顺电器控制设备有限公司 Feeder cabinet with dust removal and moisture prevention functions
CN210350432U (en) * 2019-08-29 2020-04-17 陕西美成电气成套设备有限公司 Switch cabinet

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112952725A (en) * 2021-01-29 2021-06-11 云南电网有限责任公司电力科学研究院 Cable pit dehumidifier
CN113472134A (en) * 2021-05-27 2021-10-01 淮南万泰电子股份有限公司 Mining flame proof Variable Frequency Speed Governing (VFSG) all-in-one
CN114721183A (en) * 2022-03-12 2022-07-08 深圳市骏通电子科技有限公司 LED backlight driving device, LED backlight module and liquid crystal display screen
CN117438914A (en) * 2023-12-18 2024-01-23 本溪钢铁(集团)信息自动化有限责任公司 Dampproofing electric control box casing
CN117438914B (en) * 2023-12-18 2024-02-23 本溪钢铁(集团)信息自动化有限责任公司 Dampproofing electric control box casing

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