CN217823537U - Fan electric connection grounding device for improving conduction emission resistance and radiation emission resistance - Google Patents
Fan electric connection grounding device for improving conduction emission resistance and radiation emission resistance Download PDFInfo
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- CN217823537U CN217823537U CN202221707248.8U CN202221707248U CN217823537U CN 217823537 U CN217823537 U CN 217823537U CN 202221707248 U CN202221707248 U CN 202221707248U CN 217823537 U CN217823537 U CN 217823537U
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- capacitor
- circuit board
- fan
- emission resistance
- contact area
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
A fan electric connection grounding device for improving the conduction emission resistance and the radiation emission resistance belongs to the technical field of brushless direct current fans. The device is characterized in that three branches are connected in parallel between a power supply positive electrode and a power supply negative electrode of a circuit board, copper is coated on an arc-shaped contact area of the circuit board, and a mounting surface, which is used for being connected with the circuit board and is not subjected to paint spraying treatment, of a fan shell is lapped with the contact area. After the operation, the impedance of the ground wire can be reduced, the conduction emission resistance and the radiation emission resistance can be improved, the voltage drop can be reduced, and the power supply efficiency can be improved.
Description
Technical Field
The utility model belongs to the technical field of brushless direct current fan, in particular to improve fan electricity continuous grounding device of anti conduction transmission and radiation emission ability.
Background
Due to the particularity of the semi-open structure of the fan, when the fan is connected with a circuit board, in order to avoid electric conduction, paint is often sprayed on a shell of the fan, copper-clad treatment is not carried out on the circuit board, and after the two operations, the fan is weak in conduction emission resistance and radiation emission resistance.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an improve fan electricity continuous grounding device of anti conduction transmission and radiation emission ability to the not enough of prior art existence.
The technical scheme adopted by the utility model is as follows: the utility model provides an improve fan electricity continuous grounding device of anti conduction emission and radiation emission ability, its technical essential is, three branch road of parallel connection between the power positive negative pole of circuit board, do respectively: the fan shell is used for being connected with the circuit board, a mounting surface which is not painted is lapped with the contact area.
In the scheme, the circuit board and the fan shell are grounded together.
The utility model has the advantages that: the fan electric connection grounding device for improving the conduction emission resistance and the radiation emission resistance is characterized in that three branches are connected in parallel between a power supply positive electrode and a power supply negative electrode of a circuit board, copper is coated on an arc contact area of the circuit board, and a mounting surface, which is used for being connected with the circuit board and is not subjected to paint spraying treatment, of a fan shell is lapped with the contact area. After the operation, the impedance of the ground wire can be reduced, the conduction emission resistance and the radiation emission resistance can be improved, the voltage drop can be reduced, and the power supply efficiency can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view illustrating a connection between a fan and a circuit board according to an embodiment of the present invention;
FIG. 2 is a schematic view of a fan mounting surface according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a circuit of three parallel branches of the circuit board according to an embodiment of the present invention.
The numbers in the figure illustrate the following: 1 circuit board, 2 fans, 3 installation faces.
Detailed Description
The above objects, features and advantages of the present invention will be more clearly understood and the present invention will be explained in more detail with reference to the accompanying drawings 1 to 3 and the detailed description thereof.
The housing material of the fan 2 adopted in the embodiment is die-cast aluminum alloy, and the material of the circuit board 1 is an epoxy laminated glass cloth board, which are fastened and matched through bonding or screws. Three branches are connected in parallel between the positive power supply +28V and the negative power supply GND of the circuit board, and the three branches are respectively: the fan comprises a first parallel branch formed by serially connecting a capacitor C1 and a capacitor C2, a second parallel branch formed by serially connecting a capacitor C1A and a capacitor C2A, and a third parallel branch formed by serially connecting a capacitor C1B and a capacitor C2B, wherein a first node on a connecting line of the capacitor C1 and the capacitor C2, a second node on a connecting line of the capacitor C1A and the capacitor C1B, and a third node on a connecting line of the capacitor C1B and the capacitor C2B are connected to an arc-shaped contact area of a circuit board, the position of the area is adapted to a mounting surface of a fan shell, and copper is coated on the surface of the contact area in the embodiment. The fan housing is used for connecting with the circuit board, and the mounting surface 3 which is not painted overlaps with the contact area.
Utilize fan electric continuity ground device that improves anti conduction emission and radiation emission ability, include the following step:
in the embodiment, the circuit board at the lap joint part of the circuit board 1 and the fan shell is coated with copper, and the fan shell at the lap joint part of the circuit board and the fan shell is not painted, so that the impedance of a ground wire can be reduced after operation, the conductive emission resistance and the radiation emission resistance can be improved, the voltage drop can be reduced, and the power supply efficiency can be improved; and the circuit board of the embodiment is grounded with the fan power supply and used for reducing the loop area. The contact position of the fan housing and the circuit board is not painted, and the painting protection area is shown in fig. 3.
The electric continuity is realized by covering copper on the matching position of the circuit board and the shell and not spraying paint on the contact position of the fan shell and the circuit board, the contact area between the shell and the circuit board is increased, and the aims of improving the conduction emission resistance and the radiation emission resistance are fulfilled.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (2)
1. The utility model provides an improve fan electricity continuity grounding device of anti conduction emission and radiation emission ability which characterized in that, three branch road of parallel connection between the power positive negative pole of circuit board, do respectively: the fan comprises a first parallel branch formed by connecting a first capacitor and a second capacitor in series, a second parallel branch formed by connecting the second capacitor and a third capacitor in series, and a third parallel branch formed by connecting a fourth capacitor and a fifth capacitor in series, wherein a first node between the first capacitor and the second capacitor, a second node between the second capacitor and the third capacitor, and a third node between the fourth capacitor and the fifth capacitor are connected to an arc-shaped contact area of a circuit board, the surface of the contact area is coated with copper, and a mounting surface, which is used for being connected with the circuit board and is not subjected to paint spraying treatment, of a fan shell is lapped with the contact area.
2. The fan electrical continuity grounding system for enhancing resistance to conducted and radiated emissions of claim 1, wherein said circuit board is common to the fan housing power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221707248.8U CN217823537U (en) | 2022-07-05 | 2022-07-05 | Fan electric connection grounding device for improving conduction emission resistance and radiation emission resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221707248.8U CN217823537U (en) | 2022-07-05 | 2022-07-05 | Fan electric connection grounding device for improving conduction emission resistance and radiation emission resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217823537U true CN217823537U (en) | 2022-11-15 |
Family
ID=83963379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221707248.8U Active CN217823537U (en) | 2022-07-05 | 2022-07-05 | Fan electric connection grounding device for improving conduction emission resistance and radiation emission resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217823537U (en) |
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2022
- 2022-07-05 CN CN202221707248.8U patent/CN217823537U/en active Active
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