CN202818180U - A three-phase brushless DC fan capable of rotating forwards and backwards - Google Patents
A three-phase brushless DC fan capable of rotating forwards and backwards Download PDFInfo
- Publication number
- CN202818180U CN202818180U CN 201220110017 CN201220110017U CN202818180U CN 202818180 U CN202818180 U CN 202818180U CN 201220110017 CN201220110017 CN 201220110017 CN 201220110017 U CN201220110017 U CN 201220110017U CN 202818180 U CN202818180 U CN 202818180U
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- China
- Prior art keywords
- fan
- phase
- low level
- reversing
- phase brushless
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- Expired - Lifetime
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- Control Of Positive-Displacement Air Blowers (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Provided is a three-phase brushless DC fan capable of rotating forwards and backwards. The three-phase brushless DC fan is characterized by comprising a high level and low level generating portion, a three-phase fan driving portion, and a fan coil winding portion.
Description
Technical field
The utility model relates to three-phase brushless DC fan (comprising 6 utmost points, 9 utmost points, 12 utmost points and above number of poles), mainly refers to a kind of three-phase brushless DC fan with positive reversing function.
Background technology
Knownly existing just reversing DC fan and be generally, the brush DC fan is being arranged, brushless single-phase and two-phase DC fan.
Summary of the invention
The utility model control system has realized that the three-phase brushless DC fan can control the purpose that is just reversing automatically.
The realization the technical solution of the utility model is: a kind of three-phase brushless DC fan that just reversing, it is characterized in that, comprising the high-low level generating portion, three-phase fans drive part, the fan loop winding partly forms, described high-low level generating portion links to each other with three-phase drive IC direction of rotation switch control pin, and the mode of three-phase drive IC direction of rotation switch control pin control fan loop winding current direction links to each other with the fan loop winding.
Described high-low level generating portion can be switching over or outside signal reaches control.
Described high-low level generating portion has a controller of adjusting reversing time, and the mode of reversing time can be fixed or adjustable.
Described controller is toggle switch, fixed resistance, variable resistor, fixed capacity or adjustable variodenser and delay circuit.
The control circuit that this three-phase dc fan is just reversing produces high-low level by control loop and changes, and control three-phase fans drive IC realizes the purpose that fan is just reversing.
This technical scheme utilizes high-low level generation loop to link to each other with three-phase drive IC direction of rotation switch control pin.By the mode of high-low level, make three-phase drive IC direction of rotation switch control pin, between high level and low level, change, thereby the direction of rotation of change fan realizes the automatically just contrary rotation of three-phase dc fan.
The beneficial effect that the utlity model has: this control system can effectively realize the positive reversing function of three-phase brushless DC fan. also can be by toggle switch, the manual control fan rotates (forward or reverse) along a fixed-direction, also can be held with delay circuit by at least one fixed resistance or variable resistor or fixed capacity or adjustable variable and form, realize that the fan reverse rotation time is adjustable, also can be by the constant time lag the electric circuit constitute, realize after the rotation of fan automatic reverse again forward.The three-phase direct-current brushless fan when realizing that direction of rotation changes without dead point phenomenon (compare common brushless rotating DC fan and have the dead point phenomenon because of the position of induction point thereof of Hall IC), it is higher that three-phase direct-current brushless is just reversing the relative conventional DC fan of fan usefulness, power consumption is lower, is the first-selection of current PC industry market.
Description of drawings
Fig. 1 is calcspar of the present utility model.
Wherein: 1, high-low level generating portion; 2, three-phase fans drive part; 3, fan loop winding.4, controller
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
As shown in the figure, a kind of three-phase brushless DC fan that just reversing, it is characterized in that, produce part 1 comprising high-low level, three-phase fans drive part 2, fan loop winding 3 parts, described high-low level produces system and links to each other with three-phase drive IC direction of rotation switch control pin, and the mode of three-phase drive IC direction of rotation switch control pin control fan loop winding current direction links to each other with the fan loop winding.
Described high-low level generating portion can be switching over or outside signal reaches control.
Described high-low level generating portion has a controller of adjusting reversing time, and the mode of reversing time can be fixed or adjustable.
Described controller is toggle switch, fixed resistance, variable resistor, fixed capacity or adjustable variodenser and delay circuit.
This just reversing the three-phase brushless DC fan by high-low level produce system, three-phase fans drive part, the fan winding coil forms.This control system produces system by high-low level, and level links to each other with three-phase drive IC direction of rotation switch control pin automatically by height conversion on earth, realizes automatically just contrary rotation of fan.
1. high-low level produces part: its major function is the conversion of high-low level.Also can be by fixing toggle switch, the realization high-low level produces, the manual control fan rotates (forward or reverse) along a fixed-direction, also can be by outside signal control, also can be held with delay circuit by at least one variable resistor or adjustable variable and form, realize that the fan reverse rotation time is adjustable, also can be by the constant time lag the electric circuit constitute, realize after the rotation of fan automatic reverse again forward.
2. the three-phase fans drive partly: its major function is the variation change fan direction of rotation that produces the high-low level of part according to high-low level.
3. fan loop winding.
Operation principle
High-low level produces system and will export high level when the fan plugged, three-phase drive IC direction of rotation switch control pin is according to high level, the fan loop winding current flows to and is U → V → W, be converted to low level by high level behind the automatic time delay, the fan loop winding current flows to and is U → W → V, thereby reaches the purpose of fan opposite spin.
Claims (4)
1. one kind is just being reversed the three-phase brushless DC fan, it is characterized in that, comprising the high-low level generating portion, three-phase fans drive part, the fan loop winding partly forms, described high-low level generating portion links to each other with three-phase drive IC direction of rotation switch control pin, and the mode of three-phase drive IC direction of rotation switch control pin control fan loop winding current direction links to each other with the fan loop winding.
2. just reversing as claimed in claim 1 the three-phase brushless DC fan, it is characterized in that, the high-low level generating portion can be switching over or outside signal reaches control.
3. just reversing as claimed in claim 1 the three-phase brushless DC fan, it is characterized in that, described high-low level generating portion has a controller of adjusting reversing time.
4. just reversing as claimed in claim 3 the three-phase brushless DC fan, it is characterized in that, described controller is toggle switch, fixed resistance, variable resistor, fixed capacity, adjustable variodenser or delay circuit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220110017 CN202818180U (en) | 2012-03-21 | 2012-03-21 | A three-phase brushless DC fan capable of rotating forwards and backwards |
| TW101208994U TWM443079U (en) | 2012-03-21 | 2012-05-11 | Push-pull three-phase brushless DC fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220110017 CN202818180U (en) | 2012-03-21 | 2012-03-21 | A three-phase brushless DC fan capable of rotating forwards and backwards |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202818180U true CN202818180U (en) | 2013-03-20 |
Family
ID=47876986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220110017 Expired - Lifetime CN202818180U (en) | 2012-03-21 | 2012-03-21 | A three-phase brushless DC fan capable of rotating forwards and backwards |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202818180U (en) |
| TW (1) | TWM443079U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521483A (en) * | 2013-10-12 | 2014-01-22 | 国家电网公司 | Automatic dust removing device for cooler for forced oil circulation power transformer and dust removing method thereof |
-
2012
- 2012-03-21 CN CN 201220110017 patent/CN202818180U/en not_active Expired - Lifetime
- 2012-05-11 TW TW101208994U patent/TWM443079U/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521483A (en) * | 2013-10-12 | 2014-01-22 | 国家电网公司 | Automatic dust removing device for cooler for forced oil circulation power transformer and dust removing method thereof |
| CN103521483B (en) * | 2013-10-12 | 2017-01-04 | 国家电网公司 | Strong oil circulation power transformer cooler automatic dust removing method |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM443079U (en) | 2012-12-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |
|
| CX01 | Expiry of patent term |