CN201629718U - Electromagnetic shielding frequency changer - Google Patents
Electromagnetic shielding frequency changer Download PDFInfo
- Publication number
- CN201629718U CN201629718U CN2010201306789U CN201020130678U CN201629718U CN 201629718 U CN201629718 U CN 201629718U CN 2010201306789 U CN2010201306789 U CN 2010201306789U CN 201020130678 U CN201020130678 U CN 201020130678U CN 201629718 U CN201629718 U CN 201629718U
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- China
- Prior art keywords
- electromagnetic shielding
- plastic
- conductive fiber
- frequency converter
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000004033 plastic Substances 0.000 claims abstract description 52
- 229920003023 plastic Polymers 0.000 claims abstract description 52
- 239000000835 fiber Substances 0.000 claims abstract description 30
- 229920013657 polymer matrix composite Polymers 0.000 claims description 7
- 239000011160 polymer matrix composite Substances 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000000805 composite resin Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000005855 radiation Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 238000007747 plating Methods 0.000 description 6
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 206010030312 On and off phenomenon Diseases 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001149 thermolysis Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model relates to the field of motor control. An electromagnetic shielding frequency changer comprises a plastic shell which adopts a plastic electromagnetic shielding shell that comprises a plastic layer, the plastic layer is internally buried with a conductive fiber layer, and the conductive fiber layer is a fiber layer made by adopting conductive fiber; the plastic electromagnetic shielding shell is provided with radiating holes, and the radiating holes are provided with filtering nets. Due to the adoption of the technical scheme, the electromagnetic shielding frequency changer has electromagnetic shielding function and strong antijamming capability, prevents dust and particles, enhances the stability, and has obvious energy conservation effect; and also can effectively resist electromagnetic waves generated by the work of the electromagnetic shielding frequency changer, thus being beneficial to reducing radiation on human body, and being particularly applicable to occasions needing the frequency changer, such as subways, electric trains and the like in public places.
Description
Technical field
The utility model relates to Motor Control Field, is specifically related to a kind of frequency converter.
Background technology
In order to strengthen antijamming capability, frequency converter needs electromagnetic shielding, traditional frequency converter generally adopts metal shell as electromagnetic shielding shell, though metal shell has electro-magnetic screen function, but processing more complicated, cost height, Heavy Weight, its profile also is not easy to be shaped in addition, and it is not too suitable to be used for the frequency converter electromagnetic shielding.The plastic casing that generally uses can but not have electro-magnetic screen function to the satisfied profile of people now.
In addition, owing to have high power device in the frequency converter, its caloric value is very big, and for guaranteeing the frequency converter operate as normal, frequency converter requires to have better heat radiating effect mostly.In the existing frequency converter, in order to make frequency converter have better heat radiating effect, be typically provided with radiator fan and a plurality of thermovent, the heat of frequency converter inside is diffused to the external world, though have good thermolysis, but also brought following problem: the dust tightness of frequency converter is poor, and thermovent enters dust easily in the heat radiation process, influences the operate as normal of frequency converter.
Now a lot of vehicles with electric power as the energy, as subway, electric power train, electric power bus (electric car) etc.Frequency converter on these electrical means of communication produces faint electromagnetic wave sometimes, and in the motor fluctuation of service, or under the situation of overload, the electromagnetic wave of generation is stronger, can have influence to instrument and equipment and human pilot in some cases.
The utility model content
The purpose of this utility model is, a kind of electromagnetic shielding frequency converter is provided, and solves above technical problem.
The technical problem that the utility model solved can realize by the following technical solutions:
The electromagnetic shielding frequency converter comprises a plastic casing, it is characterized in that, described plastic casing adopts the plastics electromagnetic shielding shell, described plastics electromagnetic shielding shell comprises plastic layer, is embedded with conductive fiber layer in the described plastic layer, and described conductive fiber layer is the fibrage of being made by conductive fiber;
Described plastics electromagnetic shielding shell is provided with louvre, and described louvre is provided with screen pack.
The electromagnetic shielding frequency converter that adds the conductive fiber layer structure in the plastic layer of employing plastics electromagnetic shielding shell, frequency converter than metal shell is compared, have in light weight, be easy to processing, characteristics such as cost is low, corrosion resistance is good, and can be applied to the shell of the electromagnetic shielding frequency converter complex-shaped, that volume is little; Compare with the frequency converter of pure plastic casing, both had the advantage of pure plastic casing, have the unexistent electromagnetic shielding action of pure plastic casing again.Because the conductive fiber layer of electromagnetic shielding frequency converter is embedded in the plastic layer of plastics electromagnetic shielding shell, so can use for a long time, do not need to consider the resistance to wear and the corrosivity of conductive fiber layer, and the part that in use contacts with electronic component is plastics, be electrically non-conductive material, guaranteed safe in utilization.The utility model had both had the characteristics that plastic product is easy to be shaped, and also had the radiation-resistant characteristics of electromagnetic shielding that electric conducting material just possesses.
The utility model that adds the conductive fiber layer structure in the plastic layer of employing plastics electromagnetic shielding shell, increased electromagnetic shielding action, make the utility model antijamming capability strong, strengthened stability of the present utility model, and then also strengthened the stability of the motor that is attached thereto.The bigger situation of motor power consumption is to be in rotary speed unstabilization regularly, has increased motor stabilizing and can significantly reduce energy consumption, has remarkable energy saving effect.Especially for heavy-duty motor, such as dragging hoisting machinery, rolling the motor of main equipments such as paper machine, its energy-saving effect is more remarkable.
The utility model that adds the conductive fiber layer structure in the plastic layer of employing plastics electromagnetic shielding shell, increased electromagnetic shielding action, can also effectively stop the electromagnetic wave that the work because of the electromagnetic shielding frequency converter produces, help reducing the radiation of human body, be specially adapted to the occasion that subway in the public place, electric power train etc. need frequency converter.
Characteristics such as that the PVC layer that described plastic layer can adopt the PVC material to make, PVC material have is corrosion-resistant, mechanical strength height.
Described plastic layer also can be adopted as the resin-based composite bed that polymer matrix composites are made.
Described conductive fiber can be a kind of or any several composition or the compound in carbon fiber, plating carbon fiber, metallized glass fiber, plating boron fibre and the plating silicon carbide fibre etc.
Described plastics electromagnetic shielding shell is provided with at least two louvres, and described two louvres are separately positioned on the both sides of plastics electromagnetic shielding shell.Be provided with a plurality of louvres and can accelerate heat radiation of the present utility model.
Described screen pack can adopt screen cloth.Screen cloth filters dust, particle is effective, and cost is low.The louvre that is provided with screen pack not only can effectively distribute the interior heat of electromagnetic shielding frequency converter, prevents that also extraneous dust from entering electromagnetic shielding frequency converter inside.
Beneficial effect: owing to adopted technique scheme, the utlity model has electro-magnetic screen function, advantage such as shield effectiveness is good, antijamming capability is strong, dustproof.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of the utility model plastic casing.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose with effect is easy to understand, below in conjunction with the further elaboration the utility model of concrete diagram.
With reference to Fig. 1, Fig. 2, the electromagnetic shielding frequency converter comprises the plastics electromagnetic shielding shell, and the plastics electromagnetic shielding shell comprises plastic layer 1, is embedded with conductive fiber layer 2 in the plastic layer 1, and conductive fiber layer 2 is fibrages of being made by conductive fiber; Characteristics such as that the PVC layer that plastic layer 1 can adopt the PVC material to make, PVC material have is corrosion-resistant, mechanical strength height.The resin-based composite bed that plastic layer 1 also can adopt polymer matrix composites to make, as the BMC polymer matrix composites, the BMC polymer matrix composites have good electric property and mechanical performance, thermal endurance, chemical resistance, adapt to various moulding processs again.SMC polymer matrix composites and for example, SMC polymer matrix composites have superior electric property, corrosion-resistant, light weight, engineering design is easy and advantage such as flexible.Conductive fiber can be a kind of or any several composition or the compound in carbon fiber, plating carbon fiber, metallized glass fiber, plating boron fibre and the plating silicon carbide fibre etc.Conductive fiber can be long conductive fiber.Conductive fiber can be short incisal guide electricity fiber, and short incisal guide electricity fiber production cost is lower, can also adopt the waste material that produces when producing long conductive fiber to produce the electric fiber of this weak point incisal guide.
With reference to Fig. 1, the plastics electromagnetic shielding shell is provided with louvre 3, and louvre 3 is provided with screen pack.Louvre 3 can be provided with one, be arranged on a side of plastics electromagnetic shielding shell, also can on the plastics electromagnetic shielding shell, be provided with at least two louvres 3 as required, two louvres 3 are separately positioned on the both sides of plastics electromagnetic shielding shell, about can being, or be symmetrical set, also can irregularly be provided with.Be provided with a plurality of louvres 3 and can accelerate heat radiation of the present utility model.Screen pack can adopt screen cloth, and it is effective that screen cloth filters dust, and cost is low.The louvre that is provided with screen pack not only can effectively distribute the interior heat of electromagnetic shielding frequency converter, prevents that also extraneous dust from entering electromagnetic shielding frequency converter inside.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. the electromagnetic shielding frequency converter comprises a plastic casing, it is characterized in that, described plastic casing adopts the plastics electromagnetic shielding shell, described plastics electromagnetic shielding shell comprises plastic layer, is embedded with conductive fiber layer in the described plastic layer, and described conductive fiber layer is the fibrage of being made by conductive fiber;
Described plastics electromagnetic shielding shell is provided with louvre, and described louvre is provided with screen pack.
2. electromagnetic shielding frequency converter according to claim 1 is characterized in that: the PVC layer of described plastic layer for adopting the PVC material to make.
3. electromagnetic shielding frequency converter according to claim 1 is characterized in that: the resin-based composite bed of described plastic layer for adopting polymer matrix composites to make.
4. according to claim 1,2 or 3 described electromagnetic shielding frequency converters, it is characterized in that: described plastics electromagnetic shielding shell is provided with at least two louvres, and described two louvres are separately positioned on the both sides of plastics electromagnetic shielding shell.
5. electromagnetic shielding frequency converter according to claim 4 is characterized in that: described screen pack adopts screen cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201306789U CN201629718U (en) | 2010-03-12 | 2010-03-12 | Electromagnetic shielding frequency changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201306789U CN201629718U (en) | 2010-03-12 | 2010-03-12 | Electromagnetic shielding frequency changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201629718U true CN201629718U (en) | 2010-11-10 |
Family
ID=43061117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201306789U Expired - Fee Related CN201629718U (en) | 2010-03-12 | 2010-03-12 | Electromagnetic shielding frequency changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201629718U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217637A (en) * | 2018-09-21 | 2019-01-15 | 东莞方凡智能科技有限公司 | Lightweight inverter with electromagnetic shielding |
| CN111769747A (en) * | 2020-06-15 | 2020-10-13 | 珠海格力电器股份有限公司 | Control device and method of frequency converter and frequency converter |
-
2010
- 2010-03-12 CN CN2010201306789U patent/CN201629718U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217637A (en) * | 2018-09-21 | 2019-01-15 | 东莞方凡智能科技有限公司 | Lightweight inverter with electromagnetic shielding |
| CN111769747A (en) * | 2020-06-15 | 2020-10-13 | 珠海格力电器股份有限公司 | Control device and method of frequency converter and frequency converter |
| CN111769747B (en) * | 2020-06-15 | 2021-08-31 | 珠海格力电器股份有限公司 | Control device and method of frequency converter and frequency converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Junda Machinery Co Ltd, Shanghai Assignor: Shanghai Haiguang Frequency Conversion Motor Technology Co.,Ltd. Contract record no.: 2012310000122 Denomination of utility model: Electromagnetic shielding frequency changer Granted publication date: 20101110 License type: Exclusive License Record date: 20120723 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101110 Termination date: 20140312 |