CN111834942A - Pre-alarm device for low-voltage power distribution cabinet - Google Patents
Pre-alarm device for low-voltage power distribution cabinet Download PDFInfo
- Publication number
- CN111834942A CN111834942A CN202010055894.XA CN202010055894A CN111834942A CN 111834942 A CN111834942 A CN 111834942A CN 202010055894 A CN202010055894 A CN 202010055894A CN 111834942 A CN111834942 A CN 111834942A
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- plate
- cabinet body
- cabinet
- low
- voltage distribution
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Classifications
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/026—Means for indicating or recording specially adapted for thermometers arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
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- 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
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
Abstract
The invention relates to the technical field of low-voltage power distribution cabinets, in particular to a low-voltage power distribution cabinet pre-alarm device which comprises a cabinet body, wherein a pre-tightening device is arranged on one side of the inner wall of the cabinet body, the pre-tightening device comprises a mounting plate, a first supporting plate and a single chip microcomputer are arranged on the outer side of the mounting plate and close to the bottom of the mounting plate, a second supporting plate and a first temperature sensor are arranged on the outer side of the mounting plate and close to the middle of the mounting plate, and a third supporting plate and a second temperature sensor are arranged on. This low-voltage distribution cabinet warning device in advance can detect the temperature variation at the middle part of the internal portion of cabinet through first temperature sensor, can detect the temperature variation of the internal portion top of cabinet through second temperature sensor, carries out the heat dissipation through the high-speed silence fan of single chip microcomputer control and handles to open the warning light and be used for reminding the internal portion high temperature of user's cabinet, thereby avoid the damage of the internal electrical components of cabinet.
Description
Technical Field
The invention relates to the technical field of low-voltage power distribution cabinets, in particular to a pre-alarming device of a low-voltage power distribution cabinet.
Background
Low-voltage distribution cabinet mainly used illumination and distribution's electric energy conversion and control, current low-voltage distribution cabinet all is provided with certain protect function, but basically be anti-overload, prevent the short circuit, protect function such as electric leakage, install a lot of electrical components in the low-voltage distribution cabinet, these electrical components can constantly produce the heat at the during operation, and the early warning device to the temperature in the current low-voltage distribution cabinet not, if the heat dissipation is untimely, can cause the interior bulk temperature of low-voltage distribution cabinet to rise, lead to electrical components's high temperature and damage, the conflagration takes place even, in view of this, we provide a low-voltage distribution cabinet early warning device.
Disclosure of Invention
The invention aims to provide a pre-alarming device of a low-voltage power distribution cabinet, which aims to solve the problem that no pre-alarming device for temperature exists in the existing low-voltage power distribution cabinet in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a low-voltage power distribution cabinet pre-alarm device comprises a cabinet body, wherein a pre-tightening device is arranged on one side of the inner wall of the cabinet body, the pre-tightening device comprises a vertically arranged mounting plate, the mounting plate is in threaded connection with the inner wall of the cabinet body, a first supporting plate is arranged on the outer side of the mounting plate and close to the bottom, a single chip microcomputer is arranged on the surface of the first supporting plate, a second supporting plate is arranged on the outer side of the mounting plate and in the middle, a first temperature sensor is arranged on the surface of the second supporting plate, a third supporting plate is arranged on the outer side of the mounting plate and close to the top, a second temperature sensor is arranged on the surface of the third supporting plate, a plurality of symmetrically distributed air outlet holes are formed in the positions of the two sides of the inner wall of the cabinet body and close to the edge of the top, symmetrically, the utility model discloses a high-speed silence fan that the cabinet is equipped with, the U-shaped spout by two bar boards with the inner wall of the cabinet body encloses into, two swing joint has fixed subassembly between the U-shaped spout, fixed subassembly includes the bottom plate, the surface of bottom plate and the position that is located the front edge is vertical to be equipped with first limiting plate, the surface of bottom plate and the position that is close to the middle part are vertical to be equipped with the second limiting plate, the surface of bottom plate and being located first limiting plate with position threaded connection between the second limiting plate has the high-speed silence fan that three equidistant was arranged, the top of the cabinet body is equipped with the switch board, the top of switch board and the position that is located the front edge are equipped with the fixed plate.
Preferably, the front side of the cabinet body is hinged with a first single-opening door and a second single-opening door.
Preferably, triangular air outlet pieces are symmetrically arranged on two sides of the cabinet body and close to the top edge, one side, attached to the cabinet body, of each triangular air outlet piece is of an open structure and communicated with the air outlet hole, a protective net is arranged at an opening at the bottom of each triangular air outlet piece, a strip-shaped plate is arranged at the bottom of each triangular air outlet piece, and the strip-shaped plate is in threaded connection with the cabinet body.
Preferably, the two sides of the inner wall of the cabinet body and the positions above the fixed assemblies are provided with symmetrically distributed strip-shaped supporting blocks, the surfaces of the strip-shaped supporting blocks are provided with filtering plates, the surfaces of the filtering plates and the positions at the front side edge are provided with first filtering screens, the first filtering screens are positioned right above the high-speed silent fan, the surfaces of the filtering plates and the positions at the rear side edge are provided with second filtering screens, and the pore diameters of the second filtering screens are larger than those of the first filtering screens.
Preferably, a handle groove is formed in the position, close to the middle of the top, on the front side of the first limiting plate.
Preferably, the surface of the bottom plate is provided with a limiting strip at a position located at the edge of the rear side, the second limiting plate is movably connected with an ash deposition box between the limiting strips, and the ash deposition box is located under the second filter screen.
Preferably, the first temperature sensor is electrically connected with the single chip microcomputer through a lead.
Preferably, the second temperature sensor is electrically connected with the single chip microcomputer through a lead.
Preferably, the high-speed mute fan is electrically connected with the single chip microcomputer through a wire.
Preferably, the warning light is electrically connected with the single chip microcomputer through a lead.
Compared with the prior art, the invention has the beneficial effects that:
this low-voltage distribution cabinet warning device in advance can detect the temperature variation at the middle part of the internal portion of cabinet through first temperature sensor, can detect the temperature variation of the internal portion top of cabinet through second temperature sensor, carries out the heat dissipation through the high-speed silence fan of single chip microcomputer control and handles to open the warning light and be used for reminding the internal portion high temperature of user's cabinet, thereby avoid the damage of the internal electrical components of cabinet.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the bottom structure of the interior of the cabinet of the present invention;
FIG. 3 is a schematic structural view of a triangular air outlet member according to the present invention;
FIG. 4 is a schematic view of the construction of the pretensioning device according to the present invention;
FIG. 5 is a schematic diagram of a filter plate structure according to the present invention;
FIG. 6 is a schematic structural view of a high-speed silent fan, an ash tray and a fixing component in the present invention;
fig. 7 is a schematic structural view of a fixing assembly according to the present invention.
In the figure: triangular air outlet part 1, opening structure 10, protective screening 11, strip-shaped plate 12, cabinet body 2, first singly open door 20, second singly open door 21, exhaust vent 22, switch board 23, fixed plate 24, strip-shaped supporting block 25, U-shaped spout 26, preloading device 3, mounting panel 30, first supporting plate 31, second supporting plate 32, third supporting plate 33, singlechip 34, first temperature sensor 35, second temperature sensor 36, high-speed silent fan 4, warning light 5, filter 6, first filter screen 60, second filter screen 61, fixed subassembly 7, bottom plate 70, first limiting plate 71, handle groove 710, second limiting plate 72, limiting strip 73, deposition box 8.
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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second", "third" 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, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1-7, the present invention provides a technical solution:
a pre-alarm device of a low-voltage power distribution cabinet comprises a cabinet body 2, a pre-tightening device 3 is arranged on one side of the inner wall of the cabinet body 2, the pre-tightening device 3 comprises a vertically arranged mounting plate 30, the mounting plate 30 is in threaded connection with the inner wall of the cabinet body 2, a first supporting plate 31 is arranged on the outer side of the mounting plate 30 and close to the bottom, a single chip microcomputer 34 is arranged on the surface of the first supporting plate 31, a second supporting plate 32 is arranged on the outer side of the mounting plate 30 and located in the middle, a first temperature sensor 35 is arranged on the surface of the second supporting plate 32, temperature change in the middle of the interior of the cabinet body 2 is detected through the first temperature sensor 35, a third supporting plate 33 is arranged on the outer side of the mounting plate 30 and close to the top, a second temperature sensor 36 is arranged on the surface of the third supporting plate 33, temperature change above the interior of the cabinet body 2 is detected through the, the heat in the cabinet body 2 is dissipated through the air outlet 22, the two sides of the inner wall of the cabinet body 2 and the position close to the bottom are provided with the U-shaped chutes 26 which are symmetrically distributed, the U-shaped chutes 26 are surrounded by two strip-shaped plates and the inner wall of the cabinet body 2, the fixing component 7 is movably connected between the two U-shaped chutes 26, the fixing component 7 comprises a bottom plate 70, the surface of the bottom plate 70 and the position at the front side edge are vertically provided with a first limiting plate 71, the surface of the bottom plate 70 and the position close to the middle are vertically provided with a second limiting plate 72, the surface of the bottom plate 70 and the position between the first limiting plate 71 and the second limiting plate 72 are in threaded connection with three high-speed mute fans 4 which are arranged at equal intervals, the heat in the cabinet body 2 is blown upwards through the high-speed mute fans 4 and is dissipated from the air outlet 22, the top of the cabinet body 2 is provided with a control cabinet, the surface of fixed plate 24 is provided with warning light 5, reminds the inside high temperature of user's cabinet body 2 through warning light 5.
In this embodiment, the front side of the cabinet body 2 is hinged with a first single-opening door 20 and a second single-opening door 21, so that a user can conveniently install electrical components and conveniently take out the fixed component 7, thereby conveniently maintaining the high-speed silent fan 4 and cleaning the dust box 8.
Specifically, the both sides of the cabinet body 2 and the position that is close to the top edge are equipped with symmetrical distribution's triangle-shaped air-out spare 1, one side that triangle-shaped air-out spare 1 and the cabinet body 2 pasted mutually is open structure 10, and be linked together with exhaust vent 22, make the heat can enter into triangle-shaped air-out spare 1 from exhaust vent 22 in, the opening part of triangle-shaped air-out spare 1 bottom is equipped with protection network 11, prevent that the insect from entering into the cabinet body 2 in, the bottom of triangle-shaped air-out spare 1 is equipped with strip shaped plate 12, strip shaped plate 12 and the 2 threaded connection of the cabinet body, make triangle-shaped air-out spare.
Further, the both sides of the internal wall of cabinet 2 and the position that is located fixed subassembly 7 top are equipped with the bar supporting shoe 25 of symmetric distribution, the surface of bar supporting shoe 25 is provided with filter 6, the surface of filter 6 and the position that is located the front edge limit are equipped with first filter screen 60, first filter screen 60 is located high-speed silence fan 4 directly over, the surface of filter 6 and the position that is located the rear edge limit are equipped with second filter screen 61, the aperture of second filter screen 61 is greater than first filter screen 60's aperture, first filter screen 60 can prevent that the dust from entering into high-speed silence fan 4, second filter screen 61 can make the dust enter into deposition box 8.
Further, a handle groove 710 is formed in the front side of the first limiting plate 71 and the position close to the middle of the top, so that a user can take the fixing assembly 7 out of the cabinet 2 conveniently.
Further, the surface of the bottom plate 70 and the position at the edge of the rear side are provided with a limiting strip 73, an ash deposition box 8 is movably connected between the second limiting plate 72 and the limiting strip 73, the ash deposition box 8 is positioned under the second filter screen 61, and dust in the cabinet body 2 can be collected through the ash deposition box 8 and is convenient to process.
Further, the first temperature sensor 35 is electrically connected to the single chip microcomputer 34 through a wire, an output end of the first temperature sensor 35 is electrically connected to an input end of the wire, and an output end of the wire is electrically connected to a pin PA1 of the single chip microcomputer 34.
Further, the second temperature sensor 36 is electrically connected to the single chip microcomputer 34 through a wire, an output end of the second temperature sensor 36 is electrically connected to an input end of the wire, and an output end of the wire is electrically connected to a pin PA2 of the single chip microcomputer 34.
Further, the high-speed mute fan 4 is electrically connected to the single chip microcomputer 34 through a wire, a PB10 pin of the single chip microcomputer 34 is electrically connected to an input end of the wire, and an output end of the wire is electrically connected to an input end of the high-speed mute fan 4.
In addition, the warning light 5 is electrically connected to the single chip microcomputer 34 through a wire, a PB14 pin of the single chip microcomputer 34 is electrically connected to an input end of the wire, and an output end of the wire is electrically connected to an input end of the warning light 5.
It should be noted that the high-speed mute fan 4 involved in the present invention is an HTF-I high-speed mute fan produced by shandong shanghai air conditioning equipment ltd, the first temperature sensor 35 and the second temperature sensor 36 are both temperature sensors with a model of DS18B20-NTC produced by jinyuan hang electronics ltd, huizhou, and the single chip microcomputer 34 is a single chip microcomputer with a model of STM32F030R8T6 produced by huazhijie electronics ltd, shenzhen; in addition, the high-speed mute fan, the temperature sensor and the singlechip which are related in the invention are the prior art, and can be completely realized by technicians in the field, needless to say, the protection content of the invention does not relate to the improvement of the structures and the working principles of the high-speed mute fan, the temperature sensor and the singlechip.
When the low-voltage distribution cabinet pre-alarming device of the embodiment is used, when the temperature above the inner part of the cabinet body 2 rises, the second temperature sensor 36 detects the temperature change and then inputs an electric signal to the singlechip 34 through a lead, when the temperature in the middle of the cabinet 2 rises, the first temperature sensor 35 detects the temperature change and then inputs an electric signal to the singlechip 34 through a lead, the singlechip 34 receives the signal and then carries out digital processing, and outputs the signal to the high-speed mute fan 4 and the warning light 5, at this time, the high-speed mute fan 4 is started, the upward airflow is generated in the cabinet body 2, the heat can enter the triangular air outlet part 1 along with the airflow from the air outlet hole 22, and is discharged from the protective net 11, the warning lamp 5 can flash to remind the user that the temperature inside the cabinet body 2 is too high, so that the user can deal with the temperature in time, and the electric appliance elements in the cabinet body 2 are prevented from being damaged.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a low-voltage distribution cabinet early warning device, includes the cabinet body (2), its characterized in that: one side of the inner wall of the cabinet body (2) is provided with a pre-tightening device (3), the pre-tightening device (3) comprises a vertically arranged mounting plate (30), the mounting plate (30) is in threaded connection with the inner wall of the cabinet body (2), a first supporting plate (31) is arranged on the outer side of the mounting plate (30) and close to the bottom, a single chip microcomputer (34) is arranged on the surface of the first supporting plate (31), a second supporting plate (32) is arranged on the outer side of the mounting plate (30) and located at the middle part of the mounting plate, a first temperature sensor (35) is arranged on the surface of the second supporting plate (32), a third supporting plate (33) is arranged on the outer side of the mounting plate (30) and close to the top, a second temperature sensor (36) is arranged on the surface of the third supporting plate (33), a plurality of symmetrically distributed air outlet holes (22) are formed in the two sides of the inner, the utility model discloses a cabinet, including the cabinet body (2), the cabinet body (2) both sides just be close to the position of bottom and be equipped with the U-shaped spout (26) of symmetric distribution, U-shaped spout (26) enclose by two strip shaped plates with the inner wall of the cabinet body (2), two swing joint has fixed subassembly (7) between U-shaped spout (26), fixed subassembly (7) include bottom plate (70), the surface of bottom plate (70) just is located the position of leading edge and vertically is equipped with first limiting plate (71), the surface of bottom plate (70) just is close to the position of middle part and vertically is equipped with second limiting plate (72), the surface of bottom plate (70) just is located the position threaded connection between first limiting plate (71) and second limiting plate (72) has three high-speed silence fan (4) of arranging equidistantly, the top of the cabinet body (2) is equipped with switch board (23), the top of switch board (23) just is located the position of leading edge and is equipped with fixed plate (24, and a warning lamp (5) is arranged on the surface of the fixing plate (24).
2. The low-voltage distribution cabinet pre-warning device according to claim 1, characterized in that: the front side of the cabinet body (2) is hinged with a first single-opening door (20) and a second single-opening door (21).
3. The low-voltage distribution cabinet pre-warning device according to claim 1, characterized in that: the both sides of the cabinet body (2) and the position that is close to the top edge are equipped with symmetrical distribution's triangle-shaped air-out spare (1), triangle-shaped air-out spare (1) with one side that the cabinet body (2) pasted mutually is open structure (10), and with exhaust vent (22) are linked together, the opening part of triangle-shaped air-out spare (1) bottom is equipped with protection network (11), the bottom of triangle-shaped air-out spare (1) is equipped with strip shaped plate (12), strip shaped plate (12) with the cabinet body (2) threaded connection.
4. The low-voltage distribution cabinet pre-warning device according to claim 1, characterized in that: the both sides of the cabinet body (2) inner wall just are located the position of fixed subassembly (7) top is equipped with symmetric distribution's bar supporting shoe (25), the surface of bar supporting shoe (25) is provided with filter (6), the surface of filter (6) and the position that is located the front edge are equipped with first filter screen (60), first filter screen (60) are located directly over high-speed silent fan (4), the surface of filter (6) and the position that is located the rear edge are equipped with second filter screen (61), the aperture of second filter screen (61) is greater than the aperture of first filter screen (60).
5. The low-voltage distribution cabinet pre-warning device according to claim 1, characterized in that: a handle groove (710) is formed in the position, close to the middle of the top, on the front side of the first limiting plate (71).
6. The low-voltage distribution cabinet pre-warning device according to claim 4, characterized in that: the surface of bottom plate (70) and the position that is located the rear edge limit is equipped with spacing (73), second limiting plate (72) with swing joint has deposition box (8) between spacing (73), deposition box (8) are located under second filter screen (61).
7. The low-voltage distribution cabinet pre-warning device according to claim 1, characterized in that: the first temperature sensor (35) is electrically connected with the single chip microcomputer (34) through a conducting wire.
8. The low-voltage distribution cabinet pre-warning device according to claim 1, characterized in that: the second temperature sensor (36) is electrically connected with the singlechip (34) through a lead.
9. The low-voltage distribution cabinet pre-warning device according to claim 1, characterized in that: the high-speed mute fan (4) is electrically connected with the singlechip (34) through a lead.
10. The low-voltage distribution cabinet pre-warning device according to claim 1, characterized in that: the warning lamp (5) is electrically connected with the singlechip (34) through a lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010055894.XA CN111834942A (en) | 2020-01-18 | 2020-01-18 | Pre-alarm device for low-voltage power distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010055894.XA CN111834942A (en) | 2020-01-18 | 2020-01-18 | Pre-alarm device for low-voltage power distribution cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN111834942A true CN111834942A (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010055894.XA Pending CN111834942A (en) | 2020-01-18 | 2020-01-18 | Pre-alarm device for low-voltage power distribution cabinet |
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| CN (1) | CN111834942A (en) |
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| CN207426424U (en) * | 2017-10-27 | 2018-05-29 | 宿迁市万和泰化工有限公司 | A kind of power distribution cabinet for being convenient for dedusting and heat sinking function |
| CN108155571A (en) * | 2018-01-10 | 2018-06-12 | 刘嘉豪 | A kind of stable low voltage equipment of high heat dissipation |
| CN108199273A (en) * | 2017-12-07 | 2018-06-22 | 安徽北电气自动化科技有限公司 | Electric box automatic dust removing apparatus and dust removal method |
| CN207801173U (en) * | 2017-11-23 | 2018-08-31 | 国网江苏省电力公司盐城供电公司 | A kind of novel electric power cabinet |
| CN207801215U (en) * | 2018-02-10 | 2018-08-31 | 陈建安 | A kind of heat dissipation dedusting switchgear |
| CN209016465U (en) * | 2018-11-30 | 2019-06-21 | 国网河南省电力公司方城县供电公司 | A kind of electric power cabinet |
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2020
- 2020-01-18 CN CN202010055894.XA patent/CN111834942A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711814A (en) * | 2017-03-06 | 2017-05-24 | 山东杰光电气科技股份有限公司 | Power distribution cabinet and temperature adjustment method thereof |
| CN207426424U (en) * | 2017-10-27 | 2018-05-29 | 宿迁市万和泰化工有限公司 | A kind of power distribution cabinet for being convenient for dedusting and heat sinking function |
| CN207801173U (en) * | 2017-11-23 | 2018-08-31 | 国网江苏省电力公司盐城供电公司 | A kind of novel electric power cabinet |
| CN108199273A (en) * | 2017-12-07 | 2018-06-22 | 安徽北电气自动化科技有限公司 | Electric box automatic dust removing apparatus and dust removal method |
| CN108155571A (en) * | 2018-01-10 | 2018-06-12 | 刘嘉豪 | A kind of stable low voltage equipment of high heat dissipation |
| CN207801215U (en) * | 2018-02-10 | 2018-08-31 | 陈建安 | A kind of heat dissipation dedusting switchgear |
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Application publication date: 20201027 |