CN116526239A - Hollow cup motor commutator segment, commutator and hollow cup motor for wet scene - Google Patents
Hollow cup motor commutator segment, commutator and hollow cup motor for wet scene Download PDFInfo
- Publication number
- CN116526239A CN116526239A CN202310814354.9A CN202310814354A CN116526239A CN 116526239 A CN116526239 A CN 116526239A CN 202310814354 A CN202310814354 A CN 202310814354A CN 116526239 A CN116526239 A CN 116526239A
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- Prior art keywords
- holes
- hole
- commutator
- wet
- hollow cup
- Prior art date
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- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 19
- 239000007787 solid Substances 0.000 claims abstract description 16
- 239000004744 fabric Substances 0.000 claims abstract description 11
- 230000035699 permeability Effects 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 239000000292 calcium oxide Substances 0.000 claims description 3
- 235000012255 calcium oxide Nutrition 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 17
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 238000005192 partition Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/04—Commutators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/006—Structural associations of commutators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/10—Connectors or connections adapted for particular applications for dynamoelectric machines
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dc Machiner (AREA)
Abstract
The invention discloses a hollow cup motor reversing sheet, a reverser and a hollow cup motor for a wet scene, wherein a plurality of holes are uniformly formed in the surface of the reversing sheet, the holes comprise a first type of holes and a second type of holes which are arranged at intervals, the first type of holes have components facing to one side of the top of the reversing sheet, the second type of holes have components facing away from one side of the top of the reversing sheet, the top of the holes is provided with a limiting part, an elastic part is arranged in the holes, one end of the elastic part is connected with the side wall of the holes, the other end of the elastic part is connected with a cover body, one end of the cover body is rotatably arranged on the side wall of the holes and limited by the limiting part, and solid powder suitable for heating and releasing water is placed in the holes and is blocked from the outside by filter cloth with water permeability. According to the invention, the periphery of the commutator segment can be heated and dried when the coreless motor stops rotating, and carbon powder generated by friction between the electric brush and the commutator segment is collected, so that the condition of sparking of the commutator segment is reduced, and the service life of the coreless motor is prolonged.
Description
Technical Field
The invention relates to the technical field of hollow cup motors, in particular to a hollow cup motor reversing piece for a wet scene, a reverser and a hollow cup motor.
Background
The hollow cup motor is a motor with a cylindrical shape, breaks through the rotor construction mode of the traditional motor in construction, adopts a coreless rotor, has the advantages of small volume, large torque, high efficiency and the like, and has wide application in the aspects of miniature remote control toys, portable electronic equipment, medical care and the like. The commutator is used as one of key components of the hollow cup motor and mainly comprises a shaft core, a plastic framework and commutating pieces, one end of the shaft core is coaxially abutted into the plastic framework, a plurality of commutating pieces are uniformly arranged around the periphery of the plastic framework and are mutually separated, and in the process of rotating the commutating pieces, the electric brushes are in contact with different commutating pieces.
However, in some moist use scenes, when the coreless motor rotates, heat is generated around the commutating pieces, so that the influence caused by a moist environment is limited, when the coreless motor stops rotating, fine water drops condensed on the surfaces of the commutating pieces can influence the partition between different commutating pieces due to the moist environment, and carbon powder generated by friction between the electric brushes and the commutating pieces can also influence the partition between the commutating pieces, so that the condition of striking fire of the commutating pieces is easily caused by the occurrence of two conditions, and the service life of the coreless motor is influenced.
Disclosure of Invention
The invention provides a hollow cup motor reversing sheet, a reverser and a hollow cup motor for a wet scene, which can heat and dry the periphery of the reversing sheet when the hollow cup motor stops rotating, collect carbon powder generated by friction between an electric brush and the reversing sheet, reduce the occurrence of ignition of the reversing sheet and prolong the service life of the hollow cup motor.
The invention is realized by the following technical scheme:
in a first aspect, the invention provides a hollow cup motor reversing sheet for a wet scene, the surface of the reversing sheet is uniformly provided with a plurality of holes, the holes comprise a first type of holes and a second type of holes which are arranged at intervals, the first type of holes have components facing to one side of the top of the reversing sheet, the second type of holes have components facing away from one side of the top of the reversing sheet, the top of the holes is provided with a limiting part, an elastic piece is arranged in the holes, one end of the elastic piece is connected with the side wall of the holes, the other end of the elastic piece is connected with a cover body, one end of the cover body is rotatably arranged on the side wall of the holes and limited by the limiting part, the cover body is suitable for being covered on the top of the holes, and solid powder suitable for water adding and heat releasing is placed in the holes and is blocked from the outside by filter cloth with water permeability;
the cover body is provided with a first state, a second state and a middle state between the first state and the second state, wherein when the hollow cup motor rotates, the cover body overcomes the tensile force of the elastic piece to cover the hole under the action of centrifugal force, and the cover body and the periphery of the reversing piece jointly form the periphery of the cylindrical surface; and in the second state, when the motor of the hollow cup stops rotating, the cover body opens the hole under the tensile force of the elastic piece.
Further, the cross section of the hole is circular.
Further, the holes comprise straight holes or curved holes.
Further, the holes are straight holes, and the projection of the straight holes on the periphery of the reversing sheet is parallel to the length direction of the reversing sheet.
Further, the top of the hole has a component toward the top side of the commutator, and also has a component parallel to the tangential direction of the outer periphery of the commutator.
Further, the limit portion includes a stopper.
Further, the solid powder includes quicklime and NaCl powder.
In a second aspect, the invention provides a commutator, which comprises a shaft core, a plastic framework and a plurality of hollow cup motor commutators for a wet scene, wherein one end of the shaft core is coaxially abutted into the plastic framework, and the commutators are uniformly arranged around the periphery of the plastic framework and are mutually separated.
In a third aspect, the invention provides a coreless motor comprising a commutator as described above.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the invention, the holes are formed on the periphery of the reversing pieces, when the hollow cup motor stops rotating in a wet scene, the elastic piece pulls the cover body to open the holes, water drops formed around the reversing pieces fall into the holes, or water mist in air is condensed on the holes or the filter cloth, carbon powder generated by friction between the reversing pieces and the electric brushes also falls into the holes to be collected, so that influence of carbon powder on partition among the reversing pieces is avoided, meanwhile, the generated carbon powder can be mixed with part of water to release heat, and the other part of water permeates the filter cloth to release heat with solid powder, so that heat is generated to heat and dry the periphery of the reversing pieces, so that moist air is driven, the condition of striking fire of the reversing pieces is reduced, and the service life of the hollow cup motor is prolonged; when the hollow cup motor rotates, the cover body covers the top of the hole under the action of centrifugal force, so that the periphery of the reversing sheet forms a transitional smooth circumferential surface, and the transitional friction between the electric brush and the reversing sheet is avoided. According to the invention, the carbon powder generated by friction between the electric brush and the reversing sheet is collected through the holes, and the heat release of the mixture of the moisture and the carbon powder in a humid environment and the heat release of the moisture and the solid powder are utilized, so that the periphery of the reversing sheet can be heated and dried when the coreless motor stops rotating, the condition that the reversing sheet is ignited is reduced, and the service life of the coreless motor is prolonged.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
fig. 1 is a schematic structural diagram of a rotor blade of a hollow cup motor for a wet scene according to an embodiment of the present invention (a cover and an inner part of a hole are not shown);
FIG. 2 is an isometric view of FIG. 1;
FIG. 3 is a right side cross-sectional view of FIG. 1 (showing the cover and the hole-interior component);
FIG. 4 is an enlarged view of FIG. 3 at A;
fig. 5 is a schematic structural diagram II of a commutator segment of a hollow cup motor for a wet scene (a cover and an inner part of a hole are not shown) according to an embodiment of the invention;
FIG. 6 is an isometric view of FIG. 5;
FIG. 7 is a schematic diagram of a commutator according to an embodiment of the present invention;
in the drawings, the reference numerals and corresponding part names:
100-reverser;
10-reversing sheets; 11-first type holes; 12-second class holes; 13-an elastic member; 14-a limiting part; 15-a cover; 16-solid powder; 17-filter cloth
20-a shaft core;
30-plastic skeleton.
Description of the embodiments
As described in the background art, the hollow cup motor is a motor with a cylindrical shape, and structurally breaks through the rotor construction mode of the traditional motor, adopts a coreless rotor, thus having the advantages of small volume, large torque, high efficiency and the like, and being widely applied to miniature remote control toys, portable electronic equipment, medical care and the like. The commutator is used as one of key components of the hollow cup motor and mainly comprises a shaft core, a plastic framework and commutating pieces, one end of the shaft core is coaxially abutted into the plastic framework, a plurality of commutating pieces are uniformly arranged around the periphery of the plastic framework and are mutually separated, and in the process of rotating the commutating pieces, the electric brushes are in contact with different commutating pieces.
However, in some moist use scenes, when the coreless motor rotates, heat is generated around the commutating pieces, so that the influence caused by a moist environment is limited, when the coreless motor stops rotating, fine water drops condensed on the surfaces of the commutating pieces can influence the partition between different commutating pieces due to the moist environment, and carbon powder generated by friction between the electric brushes and the commutating pieces can also influence the partition between the commutating pieces, so that the condition of striking fire of the commutating pieces is easily caused by the occurrence of two conditions, and the service life of the coreless motor is influenced.
Based on the above, the inventor creates a hollow cup motor commutator segment, a commutator and a hollow cup motor for a wet scene in the application so as to solve the technical problems.
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Examples
Referring to fig. 1 to 6, in a first aspect, the present invention provides a hollow cup motor commutator segment 10 for a wet scene, wherein a plurality of holes are uniformly formed on the surface of the commutator segment 10. The holes comprise first holes 11 and second holes 12 which are arranged at intervals, the first holes 11 have components facing the top side of the reversing sheet 10, the second holes 12 have components facing away from the top side of the reversing sheet 10, the top of each hole is provided with a limiting part 14, and elastic pieces 13 are arranged in the holes. For example, the elastic member 13 may be a spring. One end of the elastic piece 13 is connected with the side wall of the hole, the other end is connected with the cover body 15, one end of the cover body 15 is rotatably arranged on the side wall of the hole and limited by the limiting part 14, the cover body 15 is suitable for being covered on the top of the hole, solid powder 16 suitable for water adding and heat release is placed in the hole, and the solid powder is blocked with the outside by filter cloth 17 with water permeability. Here, the hole does not penetrate through the commutator segment 10. Here, that is, water droplets can penetrate the filter cloth 17 into the solid powder 16, and the solid powder 16 cannot pass through the filter cloth 17, so that the solid powder 16 is poured out by gravity when the empty cup motor is stopped. For example, the limit stop 14 may include a stop. Here, the first type holes 11 and the second type holes 12 are arranged so that water droplets and carbon powder can be collected when the commutator 100 is in any posture. For example, as shown in fig. 1, 2, 5, and 6, the first type holes 11 are arranged in rows, the second type holes 12 are arranged between the first type holes 11 of adjacent rows, for example, the first type holes 11 may also be arranged in columns, and the second type holes 12 are arranged between the first type holes 11 of adjacent columns, and the invention is not limited thereto. Here, that is, the first type holes 11 and the second type holes 12 exist, so that at least one type of holes can collect water drops and carbon powder, thereby releasing heat and drying the commutator segment 10 and the surrounding environment thereof.
The cover 15 has a first state, a second state and a middle state between the first state and the second state, wherein the first state is that when the hollow cup motor rotates, the cover 15 overcomes the pulling force of the elastic piece 13 to cover the hole under the action of centrifugal force, and the cover 15 and the periphery of the reversing piece 10 together form the periphery of the cylindrical surface; in the second state, when the coreless motor is stopped, the cover 15 opens the hole under the tension of the elastic member 13. For example, the material of the cover 15 may be consistent with the material of the segment 10.
According to the invention, the holes are formed on the periphery of the reversing sheet 10, when the coreless motor stops rotating in a wet scene, the elastic piece 13 pulls the cover body 15 to open the holes, water drops formed around the reversing sheet 10 fall into the holes, or water mist in air is condensed on the holes or the filter cloth 17, carbon powder generated by friction between the reversing sheet 10 and the electric brush also falls into the holes to be collected, so that the influence of the carbon powder on the separation between the reversing sheets 10 is avoided, meanwhile, the generated carbon powder can be mixed with part of water to release heat, and the other part of water is mixed with the solid powder 16 through the filter cloth 17 to release heat, so that the periphery of the reversing sheet 10 is heated and dried by the generated heat, the wet air is driven, the condition that the reversing sheet 10 is ignited is reduced, and the service life of the coreless motor is prolonged; when the coreless motor rotates, the cover body 15 covers the top of the hole under the action of centrifugal force, so that the periphery of the reversing sheet 10 forms a transitional smooth circumferential surface, and the transitional friction between the electric brush and the reversing sheet 10 is avoided. According to the invention, when the holes collect carbon powder generated by friction between the electric brush and the commutator segments 10, the heat release caused by mixing of moisture and carbon powder in a humid environment and the heat release caused by mixing of moisture and solid powder 16 are utilized, so that the periphery of the commutator segments 10 can be heated and dried when the coreless motor stops rotating, the condition that the commutator segments 10 are ignited is reduced, and the service life of the coreless motor is prolonged.
In some embodiments, as shown in fig. 1-6, the cross-section of the holes may be circular. For example, further, the holes may include straight holes or curved holes, and Qu Kong refers to holes with curved central axes.
In some embodiments, as shown in fig. 1 to 4, the holes are straight holes, and the projection of the straight holes on the outer circumference of the commutator segment 10 is parallel to the length direction of the commutator segment 10. So set up, be in under the vertical state at the hollow cup motor, can collect carbon dust and water droplet better, the effect of heating stoving is better.
In some embodiments, as shown in fig. 5, 6, the top of the hole has a component toward the top side of the commutator 100, as well as a component parallel to the tangential direction of the periphery of the commutator 100. So set up, the acquisition ability of hole in two directions is more balanced.
In some embodiments, the solid powder 16 includes quicklime and NaCl powder. Both are capable of physically releasing heat in the case of mixed water. In addition, in other embodiments, magnesium powder or the like may be used, and the present invention is not limited thereto.
As shown in fig. 7, in a second aspect, the present invention provides a commutator 100, which includes a shaft core 20, a plastic skeleton 30, and a plurality of hollow cup motor segments 10 for wet scenes as above, wherein one end of the shaft core 20 is coaxially abutted into the plastic skeleton 30, and the plurality of segments 10 are uniformly arranged around the periphery of the plastic skeleton 30 and are mutually separated. Here, the isolating means that the commutator segments 10 are insulated from each other, and the commutator segments 10 can be isolated from each other by providing a gap, or the commutator segments 10 can be isolated from each other by the plastic frame 30. For example, the commutator segment 10 may be tile-shaped. For example, the number of the commutator segments 10 may be five, corresponding to five windings.
In a third aspect, the present invention provides a coreless motor comprising a commutator 100 as above.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (9)
1. The hollow cup motor reversing sheet for the wet scene is characterized in that a plurality of holes are uniformly formed in the surface of the reversing sheet, each hole comprises a first hole and a second hole which are arranged at intervals, the first hole has a component facing to one side of the top of the reversing sheet, the second hole has a component facing away from one side of the top of the reversing sheet, a limiting part is arranged at the top of the hole, an elastic piece is arranged in the hole, one end of the elastic piece is connected with the side wall of the hole, the other end of the elastic piece is connected with a cover body, one end of the cover body is rotatably arranged on the side wall of the hole and limited by the limiting part, the cover body is suitable for being arranged at the top of the hole in a covering mode, and solid powder suitable for water heating and heat release is placed in the hole and is blocked from the outside by filter cloth with water permeability;
the cover body is provided with a first state, a second state and a middle state between the first state and the second state, wherein when the hollow cup motor rotates, the cover body overcomes the tensile force of the elastic piece to cover the hole under the action of centrifugal force, and the cover body and the periphery of the reversing piece jointly form the periphery of the cylindrical surface; and in the second state, when the motor of the hollow cup stops rotating, the cover body opens the hole under the tensile force of the elastic piece.
2. The coreless motor commutator bar for a wet scene as defined in claim 1, wherein the cross-section of the hole is circular.
3. The coreless motor commutator bar for wet scenes according to claim 2, wherein the holes comprise straight holes or curved holes.
4. A coreless motor commutator bar for a wet scene as defined in claim 3, wherein the holes are straight holes, and the projection of the straight holes on the periphery of the commutator bar is parallel to the length direction of the commutator bar.
5. A coreless motor commutator bar for a wet scene as defined in claim 3, in which the top of the hole has a component toward the top side of the commutator and also has a component parallel to the tangential direction of the outer periphery of the commutator.
6. The coreless motor commutator bar for a wet scene as defined in claim 1, wherein the limit portion includes a stopper.
7. The coreless motor commutator bar for a wet scene as defined in any one of claims 1 to 6, wherein the solid powder includes quicklime and NaCl powder.
8. The commutator is characterized by comprising a shaft core, a plastic framework and a plurality of hollow cup motor commutators for wet scenes, wherein one end of the shaft core is coaxially abutted into the plastic framework, and the commutators are uniformly arranged around the periphery of the plastic framework and are mutually separated.
9. A coreless motor comprising the commutator of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310814354.9A CN116526239B (en) | 2023-07-05 | 2023-07-05 | Hollow cup motor commutator segment, commutator and hollow cup motor for wet scene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310814354.9A CN116526239B (en) | 2023-07-05 | 2023-07-05 | Hollow cup motor commutator segment, commutator and hollow cup motor for wet scene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116526239A true CN116526239A (en) | 2023-08-01 |
| CN116526239B CN116526239B (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310814354.9A Active CN116526239B (en) | 2023-07-05 | 2023-07-05 | Hollow cup motor commutator segment, commutator and hollow cup motor for wet scene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116526239B (en) |
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| CN211018597U (en) * | 2020-01-13 | 2020-07-14 | 青岛特朗德机电有限公司 | Motor with dampproofing function |
| CN112351646A (en) * | 2020-10-27 | 2021-02-09 | 南京汇荣电气***有限公司 | Network monitoring device with electric damp-proof function and use method thereof |
| CN214478532U (en) * | 2021-03-23 | 2021-10-22 | 银川华卢鑫达电气设备有限公司 | Dampproof device of distribution box |
| KR102294154B1 (en) * | 2021-04-21 | 2021-08-27 | 파워코리아 주식회사 | Moisture removal device in generator body using the damper of the synchronous generator |
| CN214899609U (en) * | 2021-05-21 | 2021-11-26 | 国网江苏省电力有限公司扬中市供电分公司 | Dehumidification device for distribution box |
| CN115506177A (en) * | 2021-06-03 | 2022-12-23 | 三菱电机株式会社 | Insulating sheet, method for manufacturing same, and rotating electric machine |
| CN215638361U (en) * | 2021-09-07 | 2022-01-25 | 常州市迅驰干燥设备有限公司 | Centrifugal drier |
| CN115810960A (en) * | 2022-11-29 | 2023-03-17 | 南京华腾汽配有限公司 | High-strength rotary shunting automobile commutator |
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| CN116526239B (en) | 2023-09-05 |
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