CN114901038A - Regulator cubicle temperature automatic balance adjustment equipment - Google Patents
Regulator cubicle temperature automatic balance adjustment equipment Download PDFInfo
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- CN114901038A CN114901038A CN202210481345.8A CN202210481345A CN114901038A CN 114901038 A CN114901038 A CN 114901038A CN 202210481345 A CN202210481345 A CN 202210481345A CN 114901038 A CN114901038 A CN 114901038A
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- fixing support
- driving mechanism
- fixing
- cabinet body
- driving
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- 238000009423 ventilation Methods 0.000 claims abstract description 21
- 230000000903 blocking effect Effects 0.000 claims abstract description 16
- 239000000428 dust Substances 0.000 claims description 16
- 229920000742 Cotton Polymers 0.000 claims description 14
- 238000005192 partition Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20154—Heat dissipaters coupled to components
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20127—Natural convection
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20181—Filters; Louvers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20209—Thermal management, e.g. fan control
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Ventilation (AREA)
Abstract
The invention discloses automatic temperature balance adjusting equipment for an electric cabinet, which comprises a cabinet body, wherein a ventilating hood is arranged on one side of the cabinet body, a windshield mechanism is arranged in a groove formed in the ventilating hood, the windshield mechanism comprises a first fixing support, a second fixing support and a plurality of wind blocking pieces arranged between the first fixing support and the second fixing support, two ends of fixing shafts fixedly arranged on the plurality of wind blocking pieces are respectively and rotatably arranged on the first fixing support and the second fixing support, and the plurality of fixing shafts penetrate through the first fixing support and are sleeved with driven wheels. According to the invention, the windshield mechanism is arranged in the groove of the ventilation hood, so that the gap between two adjacent wind blocking pieces can be adjusted, the size of the wind gap and the size of the wind inlet are further changed, and the proper wind gap size is selected according to different use environments, so that the abnormal temperature change in the electrical cabinet is avoided, and the temperature is kept in a proper range.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to automatic temperature balance adjusting equipment for an electric cabinet.
Background
The electrical cabinet is a cabinet for protecting electrical components from working normally, a plurality of electrical components are usually arranged in one electrical cabinet, and the electrical cabinet is widely applied to industries such as environmental protection industry, power system, metallurgical system, nuclear power industry, fire protection and traffic industry. Although most of the electrical cabinets are arranged indoors at present, some electrical cabinets in the fields of power systems, environmental protection industries, traffic industries and the like are arranged outdoors.
The invention with the application number of CN2018116069448 discloses an energy-saving heat-dissipation electrical cabinet, wherein external air is extracted from a blast port through a blower, blown into a blast pipe and blown out from heat dissipation holes in heat dissipation pipes, the external air can be aligned to electrical elements with high heat in the working process to dissipate the heat, and the heat is discharged from vent holes, and the heat dissipation effects of the electrical elements in the electrical cabinet can be better due to a plurality of groups of heat dissipation pipes and heat dissipation holes; when the outside air is too low, the cold air extracted by the blower can be directly poured into the electrical cabinet, so that the working temperature of components in the electrical cabinet is too low, and the operation of the components is influenced; when the air is too humid, the moisture in the air can influence the operation of components in the electrical cabinet and accelerate the aging of the components.
Disclosure of Invention
The invention aims to provide automatic temperature balance adjusting equipment for an electrical cabinet, which solves the following technical problems: (1) cold air extracted by the blower can be directly filled into the electrical cabinet to influence the operation of components; (2) when the air is too humid, the moisture in the air can influence the operation of components in the electrical cabinet.
The purpose of the invention can be realized by the following technical scheme:
the automatic temperature balance adjusting device for the electric cabinet comprises a cabinet body, wherein a ventilating hood is arranged on one side of the cabinet body, a windshield mechanism is arranged in a groove formed in the ventilating hood and comprises a first fixing support, a second fixing support and a plurality of wind blocking pieces arranged between the first fixing support and the second fixing support, two ends of fixing shafts fixedly arranged on the plurality of windshield pieces are respectively rotatably arranged on the first fixing support and the second fixing support, and the plurality of fixing shafts penetrate through the first fixing support and are sleeved with driven wheels; and a dust filter screen for filtering dust in the air and adsorption cotton for adsorbing moisture in the humid air are arranged in the ventilation hood.
As a further scheme of the invention, a first driving wheel is sleeved on a connecting rod fixedly arranged at the top of the second fixed support, a second driving wheel is sleeved on an output shaft of a driving motor arranged at the bottom of the second fixed support, the first driving wheel and the second driving wheel are in driving connection with the inside of the belt, and a plurality of driven wheels are in driving connection with the inside of the belt.
As a further scheme of the invention, a first sliding groove and a second sliding groove are formed in both sides of the ventilation hood, the dust filter screen is arranged in a first fixing frame, and first sliding blocks fixedly arranged at both ends of the first fixing frame are respectively slidably arranged in the two first sliding grooves.
As a further scheme of the present invention, the absorbent cotton is disposed in a second fixing frame, and second sliding blocks fixedly mounted at two ends of the second fixing frame are slidably mounted in the two second sliding grooves, respectively.
As a further scheme of the invention, a first driving mechanism for driving the first fixing frame to ascend and descend and a second driving mechanism for driving the second fixing frame to ascend and descend are arranged in the ventilation hood, the first driving mechanism is arranged on one side of the second driving mechanism, and the first driving mechanism and the second driving mechanism are identical in structure.
As a further scheme of the invention, the first driving mechanism comprises two partition plates, a lifting screw is rotatably mounted between the two partition plates, an output shaft of a lifting motor fixedly mounted on the partition plate at the bottom is fixedly connected with the end part of the lifting screw, the two partition plates are both fixed in the ventilation hood, a first sliding block close to one side of the first driving mechanism is in threaded connection with the lifting screw of the first driving mechanism, and a second sliding block close to one side of the second driving mechanism is in threaded connection with the lifting screw of the second driving mechanism.
As a further scheme of the invention, a plurality of exhaust holes are formed in one side of the cabinet body, which is far away from the ventilating hood, and a temperature sensor for detecting the temperature in the cabinet body is arranged in the cabinet body.
As a further scheme of the invention, a door plate is rotatably arranged on one side of the cabinet body.
The invention has the beneficial effects that:
according to the automatic temperature balance adjusting device for the electrical cabinet, the windshield mechanism is arranged in the groove of the ventilation hood, so that the gap between two adjacent wind blocking pieces can be adjusted, the sizes of the wind opening and the wind inlet amount are changed, and the proper size of the wind opening is selected according to different use environments, so that the temperature change abnormality in the electrical cabinet is avoided, and the temperature is kept in a proper range; the absorption cotton that sets up in the protection casing is arranged in the moisture of absorption air, avoids moist air direct access cabinet internal, influences the operation of the internal components and parts of cabinet.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of an automatic temperature balance adjustment device for an electrical cabinet according to the present invention;
FIG. 2 is a schematic view of the construction of a windshield mechanism of the present invention;
FIG. 3 is a schematic view of the construction of the ventilation hood of the present invention;
fig. 4 is a schematic structural view of the first drive mechanism of the present invention.
In the figure: 1. a cabinet body; 2. a ventilation hood; 21. a groove; 22. a first sliding groove; 23. a second sliding groove; 24. a second fixing frame; 25. adsorbing cotton; 26. a first fixing frame; 27. a dust filter screen; 28. a second slider; 29. a first slider; 3. a windshield mechanism; 31. a first fixed bracket; 32. a second fixed bracket; 33. a wind blocking sheet; 34. a driven wheel; 35. a connecting rod; 36. a first drive pulley; 37. a fixed shaft; 38. a second transmission wheel; 39. a belt; 4. a first drive mechanism; 41. lifting a screw rod; 42. a lifting motor; 43. a partition plate; 5. a second drive mechanism; 6. a door panel.
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. 1-4, the invention is an automatic temperature balance adjusting device for an electrical cabinet, comprising a cabinet body 1, a door panel 6 rotatably mounted on one side of the cabinet body 1, a handle disposed on the door panel 6, a ventilation hood 2 disposed on one side of the cabinet body 1, a damper mechanism 3 disposed in a groove 21 formed on the ventilation hood 2, the damper mechanism 3 including a first fixing bracket 31 and a second fixing bracket 32, a plurality of wind blocking pieces 33 disposed between the first fixing bracket 31 and the second fixing bracket 32, a wind gap formed between two adjacent wind blocking pieces 33, and an external air entering the ventilation hood 2 through the wind gap, wherein in different use environments, a proper size of the wind gap is selected to avoid temperature variation abnormality in the cabinet body 1, so that the temperature is maintained in a proper range, the wind blocking pieces 33 are fixedly mounted on a fixing shaft 37, two ends of the fixing shafts 37 are respectively rotatably mounted on the first fixing bracket 31 and the second fixing bracket 32, a plurality of fixed shafts 37 penetrate through the first fixed support 31 and are sleeved with driven wheels 34, the top of the second fixed support 32 is fixedly provided with a connecting rod 35, the end part of the connecting rod 35 is sleeved with a first driving wheel 36, the bottom of the second fixed support 32 is provided with a driving motor, an output shaft of the driving motor is sleeved with a second driving wheel 38, the first driving wheel 36 and the second driving wheel 38 are in driving connection with the inside of a belt 39, and the driven wheels 34 are in driving connection with the inside of the belt 39;
when the temperature sensor in the cabinet body 1 detects that the temperature in the cabinet body 1 is too high: the driving motor is started, an output shaft of the driving motor drives the second driving wheel 38 to rotate, the second driving wheel 38 drives the first driving wheel 36 to rotate through the belt 39, and then drives the driven wheels 34 which are connected in the belt 39 in a transmission mode to rotate, the driven wheels 34 drive the wind blocking pieces 33 to rotate through the fixed shafts 37, the wind blocking pieces 33 are perpendicular to the space between the first fixed support 31 and the second fixed support 32, the size of the wind port is increased, the air intake is increased, and the temperature in the cabinet body 1 is further reduced.
Referring to fig. 3 and 4, a dust filter screen 27 for filtering dust in air is arranged in the ventilation hood 2, adsorption cotton 25 for adsorbing moisture in humid air is also arranged in the ventilation hood 2, first sliding grooves 22 and second sliding grooves 23 are formed in both sides of the ventilation hood 2, the dust filter screen 27 is arranged in a first fixing frame 26, first sliding blocks 29 are fixedly arranged at both ends of the first fixing frame 26, the first fixing frame 26 is respectively slidably arranged in the two first sliding grooves 22 through the two first sliding blocks 29, the adsorption cotton 25 is arranged in a second fixing frame 24, second sliding blocks 28 are fixedly arranged at both ends of the second fixing frame 24, and the second fixing frame 24 is respectively slidably arranged in the two second sliding grooves 23 through the two second sliding blocks 28;
air enters the ventilation hood 2 from a gap between the adjacent wind blocking pieces 33, passes through the dust filter screen 27 and enters the cabinet body 1 to cool the cabinet body 1, and the dust filter screen 27 is used for filtering dust and the like in the air;
when the air is too humid, the lifting motor 42 on the second driving mechanism 5 is started, the lifting motor 42 drives the second sliding block 28 on the lifting screw 41 to move upwards, and further drives the absorbent cotton 25 in the second fixing frame 24 to move upwards, so that when the air passes through the absorbent cotton 25, moisture in the air is absorbed by the absorbent cotton 25, and the moist air is prevented from directly entering the cabinet body 1 to influence the operation of components in the cabinet body 1;
when the dust filter 27 needs to be replaced: the lifting motor 42 on the first driving mechanism 4 is started, and the lifting motor 42 drives the first sliding block 29 on the lifting screw 41 to move downwards, so as to drive the dust filter screen 27 in the first fixing frame 26 to move downwards, so as to replace the dust filter screen 27 in the first fixing frame 26.
Referring to fig. 4, a plurality of exhaust holes are formed in one side of the cabinet body 1 away from the ventilation hood 2, and a temperature sensor for detecting the internal temperature of the cabinet body 1 is arranged in the cabinet body 1; the ventilating hood 2 is internally provided with a first driving mechanism 4 for driving the first fixing frame 26 to ascend and descend, the ventilating hood 2 is internally further provided with a second driving mechanism 5 for driving the second fixing frame 24 to ascend and descend, the first driving mechanism 4 is arranged on one side of the second driving mechanism 5, the first driving mechanism 4 and the second driving mechanism 5 are identical in structure, the first driving mechanism 4 comprises two partition plates 43, a lifting screw 41 is rotatably arranged between the two partition plates 43, a lifting motor 42 is fixedly arranged on the partition plate 43 at the bottom, an output shaft of the lifting motor 42 is fixedly connected with the end part of the lifting screw 41, the two partition plates 43 are fixed in the ventilating hood 2, one of the first sliding blocks 29 is in threaded connection with the lifting screw 41 of the first driving mechanism 4, and one of the second sliding blocks 28 is in threaded connection with the lifting screw 41 of the second driving mechanism 5.
Referring to fig. 1 to 4, the working process of the automatic temperature balance adjustment device for the electrical cabinet of the present embodiment is as follows:
when the temperature sensor in the cabinet body 1 detects that the temperature in the cabinet body 1 is too high: the driving motor is started, an output shaft of the driving motor drives the second driving wheel 38 to rotate, the second driving wheel 38 drives the first driving wheel 36 to rotate through the belt 39, and further drives the driven wheels 34 in the belt 39 and connected in a transmission mode to rotate, the driven wheels 34 drive the wind blocking pieces 33 to rotate through the fixed shafts 37, so that the wind blocking pieces 33 are perpendicular to the space between the first fixed support 31 and the second fixed support 32, the size of a wind port is increased, the wind inlet amount is increased, and the temperature in the cabinet body 1 is reduced;
when the air is moist, start elevator motor 42 on the second actuating mechanism 5, elevator motor 42 drives the second sliding block 28 rebound on the elevating screw 41, and then drives the absorption cotton 25 rebound in the second mount 24 for the air is when adsorbing cotton 25, and moisture in the air is adsorbed by absorption cotton 25, avoids moist air directly to get into the cabinet body 1 in, influences the operation of the interior components and parts of cabinet body 1.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (8)
1. The automatic temperature balance adjusting device for the electric cabinet comprises a cabinet body (1), wherein a ventilating hood (2) is arranged on one side of the cabinet body (1), and is characterized in that a windshield mechanism (3) is arranged in a groove (21) formed in the ventilating hood (2), the windshield mechanism (3) comprises a first fixing support (31), a second fixing support (32) and a plurality of wind blocking pieces (33) arranged between the first fixing support (31) and the second fixing support (32), two ends of a fixing shaft (37) fixedly arranged on the plurality of wind blocking pieces (33) are respectively rotatably arranged on the first fixing support (31) and the second fixing support (32), and the plurality of fixing shafts (37) penetrate through the first fixing support (31) and are sleeved with driven wheels (34); and a dust filter screen (27) for filtering dust in the air and adsorption cotton (25) for adsorbing moisture in the humid air are arranged in the ventilation hood (2).
2. The regulator apparatus of claim 1, wherein a first driving wheel (36) is sleeved on a connecting rod (35) fixedly mounted at the top of the second fixing support (32), a second driving wheel (38) is sleeved on an output shaft of a driving motor mounted at the bottom of the second fixing support (32), the first driving wheel (36) and the second driving wheel (38) are connected in a belt (39) in a transmission manner, and a plurality of driven wheels (34) are connected in the belt (39) in a transmission manner.
3. The regulator apparatus according to claim 1, wherein the first sliding groove (22) and the second sliding groove (23) are formed on both sides of the ventilation hood (2), the dust filter (27) is disposed in a first fixing frame (26), and first sliding blocks (29) fixedly mounted on both ends of the first fixing frame (26) are slidably mounted in the two first sliding grooves (22), respectively.
4. The regulator apparatus according to claim 3, wherein the absorbent cotton (25) is disposed in a second fixed frame (24), and second sliding blocks (28) fixedly mounted at two ends of the second fixed frame (24) are slidably mounted in the two second sliding grooves (23), respectively.
5. The automatic temperature balance adjusting device for the electrical cabinet according to claim 4, wherein a first driving mechanism (4) for driving the first fixing frame (26) to ascend and descend and a second driving mechanism (5) for driving the second fixing frame (24) to ascend and descend are arranged in the ventilation hood (2), the first driving mechanism (4) is arranged on one side of the second driving mechanism (5), and the first driving mechanism (4) and the second driving mechanism (5) are identical in structure.
6. The automatic temperature balance adjusting device of the electrical cabinet according to claim 5, wherein the first driving mechanism (4) comprises two partition plates (43), a lifting screw (41) is rotatably installed between the two partition plates (43), an output shaft of a lifting motor (42) fixedly installed on the bottom partition plate (43) is fixedly connected to the end of the lifting screw (41), the two partition plates (43) are both fixed in the ventilation hood (2), a first sliding block (29) close to one side of the first driving mechanism (4) is in threaded connection with the lifting screw (41) of the first driving mechanism (4), and a second sliding block (28) close to one side of the second driving mechanism (5) is in threaded connection with the lifting screw (41) of the second driving mechanism (5).
7. The automatic temperature balance adjusting device for the electrical cabinet according to claim 1, wherein a plurality of exhaust holes are formed in one side of the cabinet body (1) away from the ventilation hood (2), and a temperature sensor for detecting the internal temperature of the cabinet body (1) is arranged in the cabinet body (1).
8. The automatic temperature balance adjusting device for the electric cabinet according to claim 1, wherein a door panel (6) is rotatably installed on one side of the cabinet body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210481345.8A CN114901038A (en) | 2022-05-05 | 2022-05-05 | Regulator cubicle temperature automatic balance adjustment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210481345.8A CN114901038A (en) | 2022-05-05 | 2022-05-05 | Regulator cubicle temperature automatic balance adjustment equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114901038A true CN114901038A (en) | 2022-08-12 |
Family
ID=82719575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210481345.8A Pending CN114901038A (en) | 2022-05-05 | 2022-05-05 | Regulator cubicle temperature automatic balance adjustment equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114901038A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211720103U (en) * | 2020-05-04 | 2020-10-20 | 郑州莱坤电气设备有限公司 | Power distribution cabinet with good heat dissipation effect |
| DE202020106623U1 (en) * | 2019-12-30 | 2020-12-03 | Taicang Denasen Mechanical & Electrical Engineering Co., Ltd. | Internally adjustable control cabinet |
| CN213178678U (en) * | 2020-08-13 | 2021-05-11 | 苏州力良建筑装饰工程有限公司 | Workshop ventilation system |
| CN112864874A (en) * | 2020-12-17 | 2021-05-28 | 安徽建筑大学 | Switch board safety device |
| CN113825050A (en) * | 2021-09-18 | 2021-12-21 | 安徽省恒裕泰数码科技有限公司 | Portable sound equipment |
-
2022
- 2022-05-05 CN CN202210481345.8A patent/CN114901038A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202020106623U1 (en) * | 2019-12-30 | 2020-12-03 | Taicang Denasen Mechanical & Electrical Engineering Co., Ltd. | Internally adjustable control cabinet |
| CN211720103U (en) * | 2020-05-04 | 2020-10-20 | 郑州莱坤电气设备有限公司 | Power distribution cabinet with good heat dissipation effect |
| CN213178678U (en) * | 2020-08-13 | 2021-05-11 | 苏州力良建筑装饰工程有限公司 | Workshop ventilation system |
| CN112864874A (en) * | 2020-12-17 | 2021-05-28 | 安徽建筑大学 | Switch board safety device |
| CN113825050A (en) * | 2021-09-18 | 2021-12-21 | 安徽省恒裕泰数码科技有限公司 | Portable sound equipment |
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