CN204069488U - Circuit board of controller - Google Patents
Circuit board of controller Download PDFInfo
- Publication number
- CN204069488U CN204069488U CN201420526476.4U CN201420526476U CN204069488U CN 204069488 U CN204069488 U CN 204069488U CN 201420526476 U CN201420526476 U CN 201420526476U CN 204069488 U CN204069488 U CN 204069488U
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- China
- Prior art keywords
- circuit module
- electric power
- forceful electric
- module
- light current
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- 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.)
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- 230000001681 protective effect Effects 0.000 claims abstract description 14
- 238000009413 insulation Methods 0.000 claims description 18
- 230000032683 aging Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 3
- 238000010408 sweeping Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 101000836649 Homo sapiens Selenoprotein V Proteins 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 241000533950 Leucojum Species 0.000 description 1
- 102100027056 Selenoprotein V Human genes 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
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a circuit board of a controller, which firstly arranges a safe electric clearance between a strong current wire and a weak current wire, so that the strong current wire and the weak current wire can not be short-circuited due to too close distance; secondly, the thickness of an insulating part inside the transformer module is increased, so that the strong current coil and the weak current coil are prevented from being conducted due to the failure of the insulating part of the transformer module; and finally, an insulating protective sleeve is arranged on the weak current lead of the weak current circuit module, so that the strong current lead and the weak current lead are prevented from being communicated after the weak current lead or the strong current lead are contacted with each other in staggered and staggered modes when the weak current lead or the strong current lead drops the insulating layer due to aging. The utility model discloses reduce the probability of the intercommunication of forceful electric power circuit module and light current circuit module in three aspect for between forceful electric power circuit module and the light current circuit module, can not switch on because of the short circuit, thereby make the easy sweep the fan motor that touches and the motor line accords with the safety standard requirement.
Description
Technical field
The utility model relates to circuit engineering field, particularly relates to a kind of circuit board of controller.
Background technology
Existing domestic air conditioning sweep wind turbine and with the motor lines of sweeping wind turbine and being connected, generally be arranged on after detachable block, when detachable block is disassembled due to demand for security, sweep wind turbine and motor lines is then exposed in outside, staff can touch, and according to national safety standard requirement, the voltage easily touching parts should use light current, namely use safety extra low voltage SELV, the standard of safety extra low voltage is: 1, be no more than 42.4V to its voltage peak of interchange; 42.4V is no more than to its voltage of direct current; 2, if voltage obtains from electrical network, the transducer of winding should be separated by a safety isolating transformer or band.The device of this use safety ELV can think not charged, and staff then can touch.
In order to make to sweep wind turbine and motor lines reaches safety extra low voltage, generally forceful electric power circuit module and light current circuit module are set in air-conditioning inside in prior art, forceful electric power circuit module is connected with the 220V power supply of family expenses, light current circuit module with sweep wind turbine and be connected, then transformer is used to transfer the voltage of the 220V of forceful electric power circuit module to safety extra low voltage, again safety extra low voltage is sent to light current circuit module, by light current circuit module supply of electrical energy to sweeping wind turbine.
But in use due to the reason such as wire short circuit of transformer fault, forceful electric power circuit module or light current circuit module, easily cause intercommunication between forceful electric power and light current, cause being supplied to the safety extra low voltage sweeping wind turbine consistent with forceful electric power voltage, cause the requirement that fails safety standards, the personnel that easily cause get an electric shock, so need now a kind of circuit board of safe controller, make because of short circuit, and the voltage intercommunication between forceful electric power and light current to be caused between forceful electric power and light current.
Utility model content
The utility model provides a kind of circuit board of controller, the circuit board of controller of the present utility model can make between forceful electric power circuit module and light current circuit module, can not the conducting because of short circuit, thus make accessiblely to sweep wind turbine and motor lines meets safety standard requirement.
The utility model provides a kind of circuit board of controller, comprising:
Forceful electric power circuit module, the voltage changing module be connected with described forceful electric power circuit module, the light current circuit module be connected with described voltage changing module;
Electric clearance between the forceful electric power cabling of described forceful electric power circuit module and the light current cabling of described light current circuit module is 3mm, and creepage distance is 2.6-8mm;
Electric clearance and the creepage distance of the insulating element between the primary coil of described voltage changing module inside and secondary coil are at least 3mm; Run through insulation thickness at least 0.16mm.
The weak-current lead of described light current circuit module is provided with insulation protective jacket.
Preferably, the thickness of described insulation protective jacket is at least 1mm.
Preferably, described electric clearance is 3mm.
Preferably, described creepage distance is 5mm.
Preferably, also comprise:
The weak-current lead of described forceful electric power circuit module is provided with insulation protective jacket.
Preferably, described voltage changing module comprises:
Transformer, or transducer.
Preferably, the voltage of described light current circuit module is less than 42.4V.
The utility model provides a kind of circuit board of controller, and first the utility model arranges safe electric clearance by between forceful electric power cabling and light current cabling, makes forceful electric power cabling and light current cabling can not the short circuit because distance is too near; Secondly, thickness is strengthened to the insulating element of voltage changing module inside, a lateral coil due to transformer is forceful electric power coil, opposite side coil is light current coil, insulating element is in centre, insulating element thickness is increased, thus prevents voltage changing module due to insulating element fault, by forceful electric power coil and the conducting of light current coil; Finally, be provided with insulation protective jacket by the weak-current lead of light current circuit module, prevent weak-current lead or forceful electric power wire due to aging and insulating barrier is come off time, straggly staggered in contact with each other after, cause forceful electric power wire and weak-current lead intercommunication.
The utility model reduces the probability of the intercommunication of forceful electric power circuit module and light current circuit module in three, make between forceful electric power circuit module and light current circuit module, can not the conducting because of short circuit, thus make accessiblely to sweep wind turbine and motor lines meets safety standard requirement.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of Fig. 1 a kind of circuit board of controller disclosed in the utility model embodiment;
The circuit board electric clearance schematic diagram of Fig. 2 a kind of controller disclosed in the utility model embodiment;
The circuit board creepage distance schematic diagram of Fig. 3 a kind of controller disclosed in the utility model embodiment;
The schematic diagram of Fig. 4 a kind of circuit board transformer of controller disclosed in the utility model embodiment;
The schematic diagram of Fig. 5 a kind of insulation protective jacket of circuit board of controller disclosed in the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides a kind of circuit board of controller, as shown in Figure 1, controller comprises:
Forceful electric power circuit module 100, the voltage changing module 200 be connected with described forceful electric power circuit module 100, the light current circuit module 300 be connected with described voltage changing module 200; Outside controller, what be connected by motor lines 401 with light current circuit module 300 in addition sweeps wind turbine 400.
The utility model is improved the circuit structure on controller by three aspects, will be described in detail one by one below:
First aspect: the electric clearance between the forceful electric power cabling of described forceful electric power circuit module 100 and the light current cabling of described light current circuit module 300 is 3mm, and creepage distance is 2.6-8mm;
Wherein electric clearance is the shortest space length recorded between two conductive parts or between conductive parts and equipment protection interface.Namely, when ensureing that electric property is stablized with safety, the beeline insulated can be realized by air.Creepage distance is the beeline measured along exhausted insulating surface on two adjacent conductors or a conductor and adjacent motor casing surface.As shown in Figure 2, be the schematic diagram of electric clearance, wherein horizontal line represents the electric clearance between two devices, and as shown in Figure 3, be the schematic diagram of creepage distance, wherein thick line identifies the creepage distance between two devices.
Cabling is on circuit board by wire that Copper Foil is formed, forceful electric power cabling is the Copper Foil formed between forceful electric power device and connects, light current cabling is the Copper Foil formed between light current device and connects, forceful electric power cabling and light current cabling interlaced arrangement on controller, when the electric clearance of forceful electric power cabling and light current cabling is nearer, easily cause short circuit, in order to preventing short circuit situation, the utility model is according to electrical standards GB4706.1-2005, for forceful electric power cabling and light current cabling arrange rational secured electrical gap, forceful electric power cabling and light current cabling is made to there is not the possibility of short circuit.
Concrete, electric clearance between forceful electric power cabling and light current cabling needs the operating voltage of foundation product, overvoltage category and the class of pollution three conditions to assess, and creepage distance needs the operating voltage of foundation product, PCB material rate and the class of pollution three conditions to assess, wherein operating voltage is the rated operational voltage of air-conditioning, is generally 220V; Overvoltage classification is the voltage class through forceful electric power circuit module 100 and light current circuit module 300, be divided into one-level, secondary, three grades, corresponding pulse voltage is 1500V, 2500V, 4000V respectively, and needed for pulse voltage is larger, electric clearance is larger.
PCB material is the material of the PCB at controller place, is divided into material group I, II, III a, III b tetra-class, partitioning standards relative discharge tracking index (CTI) value of material group, material group I:600≤CTI; Material group II: 400≤CTI < 600; Material group III a:175≤CTI < 400; Material group III b:100≤CTI < 175, the conductivity of different materials is different, and rank is higher, and to represent conductivity higher, and required creepage distance is larger.
The class of pollution is that the grade of pollution level in air is divided into 1 grade, 2 grades, 2 grades and 4 grades.1 grade of pollution: do not pollute or only dry, dielectric pollution occur, pollution can not have an impact; 2 grades of pollutions: except the pollution accidental in short-term caused by foreseeable condensation, dielectric pollution only occurs; 3 grades of pollutions: the pollution of conductivity or the non-conductive pollution of drying occur, and this pollution can make it have conductivity by foreseeable condensation; 4 grades of pollutions: the pollution of the lasting conductivity of the generation caused by conductivity dust, rainwater or snowflake.When the class of pollution in air is higher, the conductivity representing air is larger, and when the conductive impurity in air is more, short circuit possibility increases, so need to increase electric clearance and creepage distance.
Preferably, described electric clearance is 3mm, and described creepage distance is 5mm.
Enumerate concrete example below: when the operating voltage of product is 220V, when overvoltage category is II, the electric clearance obtained through professional assessment is 3mm; Be III a when the operating voltage of product is 220V, PCB material, when the class of pollution is 2 grades, assessing through the creepage distance of specialty the creepage distance obtained is 5mm.
Second aspect: electric clearance and the creepage distance of the insulating element 203 between the primary coil of described voltage changing module 200 inside and secondary coil are at least 3mm; Run through insulation thickness at least 0.16mm.
As shown in Figure 4, voltage changing module 200 connects forceful electric power circuit module 100 and light current circuit module 300, it is light current voltage that object is forceful electric power voltage transitions, voltage changing module 200 has primary coil 201 and secondary coil 202 and an insulating element 203, such as iron core, insulating element 203 is arranged in the middle of two coils, wherein primary coil 201 is connected with forceful electric power circuit module 100, secondary coil 202 is connected with light current circuit module 300, forceful electric power circuit module 100 and light current circuit module 300 separate by middle insulating element 203, when insulating element 203 no longer insulate, then can cause forceful electric power circuit module 100 and light current circuit module 300 conducting, cause forceful electric power voltage and the intercommunication of light current voltage.
So in order to prevent this from occurring, the utility model increases the layer electric clearance of insulating element 203, creepage distance and thickness, makes the thickness of insulating barrier reach electrical standards, and then the object playing insulation enabling insulating element stable.
The third aspect: the wire of described light current circuit module 300 is provided with insulation protective jacket 301.
As shown in Figure 5, in forceful electric power circuit module 100 and light current circuit module 200 except having forceful electric power cabling and light current cabling, also have forceful electric power wire and weak-current lead, forceful electric power wire and weak-current lead are crisscross arranged at the circuit board of controller, after aging due to the insulating barrier of wire, weak-current lead or the electric leakage of forceful electric power wire can be caused, when weak-current lead touches the forceful electric power cabling on forceful electric power wire or forceful electric power circuit module 100, weak-current lead and the intercommunication of forceful electric power wire can be caused, and then cause the voltage swept on wind turbine 400 to be forceful electric power voltage.
So the weak-current lead all on light current circuit module 300 of the utility model installs insulation protective jacket 301 additional; when the wire of the aging rear inside of weak-current lead exposed in outside time; outside has insulation protective jacket 301 to wrap up; prevent weak-current lead directly and forceful electric power wire or the intercommunication of forceful electric power cabling, and then prevent the generation of dangerous situation.
In order to play good insulation effect, the thickness of preferred insulation protective jacket is at least 1mm.
Preferably, the voltage changing module 200 in the utility model comprises: transformer, or transducer.Reach safety extra low voltage to make to sweep wind turbine 400, voltage changing module 200 inputs to described light current circuit module 300 voltage after changing should be less than 42.4V, to reach safety standard requirement.
The utility model provides a kind of circuit board of controller, and first the utility model arranges safe electric clearance by between forceful electric power cabling and light current cabling, makes forceful electric power cabling and light current cabling can not the short circuit because distance is too near; Secondly, thickness is strengthened to the insulating element of voltage changing module inside, a lateral coil due to transformer is forceful electric power coil, opposite side coil is light current coil, insulating element is in centre, insulating element thickness is increased, thus prevents voltage changing module due to insulating element fault, by forceful electric power coil and the conducting of light current coil; Finally, be provided with insulation protective jacket by the weak-current lead of light current circuit module, prevent weak-current lead or forceful electric power wire due to aging and insulating barrier is come off time, straggly staggered in contact with each other after, cause forceful electric power wire and weak-current lead intercommunication.
The utility model reduces the probability of the intercommunication of forceful electric power circuit module and light current circuit module in three, make between forceful electric power circuit module and light current circuit module, can not the conducting because of short circuit, thus make accessiblely to sweep wind turbine and motor lines meets safety standard requirement.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a circuit board for controller, is characterized in that, comprising:
Forceful electric power circuit module, the voltage changing module be connected with described forceful electric power circuit module, the light current circuit module be connected with described voltage changing module;
Electric clearance between the forceful electric power cabling of described forceful electric power circuit module and the light current cabling of described light current circuit module is 3mm, and creepage distance is 2.6-8mm;
Electric clearance and the creepage distance of the insulating element between the primary coil of described voltage changing module inside and secondary coil are at least 3mm; Run through insulation thickness at least 0.16mm;
The weak-current lead of described light current circuit module is provided with insulation protective jacket.
2. circuit board as claimed in claim 1, it is characterized in that, the thickness of described insulation protective jacket is at least 1mm.
3. circuit board as claimed in claim 1, it is characterized in that, described electric clearance is 3mm.
4. circuit board as claimed in claim 1, it is characterized in that, described creepage distance is 5mm.
5. circuit board as claimed in claim 1, is characterized in that, also comprise:
The weak-current lead of described forceful electric power circuit module is provided with insulation protective jacket.
6. circuit board as claimed in claim 1, it is characterized in that, described voltage changing module comprises:
Transformer, or transducer.
7. circuit board as claimed in claim 1, it is characterized in that, the voltage of described light current circuit module is less than 42.4V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420526476.4U CN204069488U (en) | 2014-09-12 | 2014-09-12 | Circuit board of controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420526476.4U CN204069488U (en) | 2014-09-12 | 2014-09-12 | Circuit board of controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204069488U true CN204069488U (en) | 2014-12-31 |
Family
ID=52210924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420526476.4U Expired - Fee Related CN204069488U (en) | 2014-09-12 | 2014-09-12 | Circuit board of controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204069488U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114895085A (en) * | 2022-04-27 | 2022-08-12 | 威胜集团有限公司 | Three-phase electric energy meter circuit board structure |
-
2014
- 2014-09-12 CN CN201420526476.4U patent/CN204069488U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114895085A (en) * | 2022-04-27 | 2022-08-12 | 威胜集团有限公司 | Three-phase electric energy meter circuit board structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |