CN201656887U - Positive, negative rotation control circuit device of a direct current fan - Google Patents
Positive, negative rotation control circuit device of a direct current fan Download PDFInfo
- Publication number
- CN201656887U CN201656887U CN2010201488503U CN201020148850U CN201656887U CN 201656887 U CN201656887 U CN 201656887U CN 2010201488503 U CN2010201488503 U CN 2010201488503U CN 201020148850 U CN201020148850 U CN 201020148850U CN 201656887 U CN201656887 U CN 201656887U
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- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005283 ground state Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model relates to a positive, negative rotation control circuit device of a direct current fan, which is electrically connected with a stator coil of the direct current fan. The positive, negative rotation control circuit device comprises a control unit, a power supply electrically connected with the control unit and a trigger switch unit. Especially the trigger switch comprises a first trigger circuit and a second trigger circuit respectively electrically connected with a Honeywell IC of the control unit and the power supply. The positive, negative polarity reverse of the power supply electrically connected with the Honeywell IC is directly forced by simultaneously triggering the first trigger circuit and the second trigger circuit at the proper time and the negative rotation of the direct current fan is controlled by the drive IC after direct informing. Because of reduced the parts through which the current passes, the power consumption is effectively reduced, the control way is easy and the cost is reduced.
Description
Technical field
The utility model relates to a kind of control circuit, particularly a kind of positive and reverse rotation control circuit device of DC fan.
Background technology
Consult Fig. 1, be A1 number " a kind of two phase electronic switch motor operation method and load output intent thereof (Method for operationof a two-phase electronically-commuted motor and motor forcarrying out said method) " patent of PCT WO2006/089605, the disclosed motor 10 of this patent is by a direct current power supply 11 power supplies, the rotating speed control of motor 10 is by a PWM (pulse widthmodulation, pulse width modulation) the frequency signal control that produced of generator 12, when the rotor 13 of motor 10 rotates, its magnetic changes and by Hall IC (Hall integrated circuit) 14 inductions and then be passed to Programmable Logic Controller 15, Programmable Logic Controller 15 provides two output signals 16,17 turning to control motor 10.
Because the electric current of two output signals 16,17 that Programmable Logic Controller 15 is exported all must be through element such as coil 18 or 19, utilize the direction of these Programmable Logic Controller 15 Control current flowing through coil 18 or 19, change the effect that motor 10 produces forward or reverse to reach, yet this kind control mode, the element that can cause electric current to pass through is more, thereby cause consumed power bigger, and the element cost is also higher.
The utility model content
It is low and control mode is easy that the purpose of this utility model provides a kind of consumed power, and the positive and reverse rotation control circuit device of the DC fan that can reduce cost.
The positive and reverse rotation control circuit device of the utility model DC fan, be electrically connected with the stator coil of a DC fan, and can export the electric current that makes this stator coil produce different flow directions, drive the rotation that the impeller of this DC fan produces corresponding direction with the magnet ring of responding to this DC fan, this positive and reverse rotation control circuit device comprises:
A control unit comprises that a drive IC that is electrically connected with this stator coil and can output drive signal and one are electrically connected the magnetic polarity that also can respond to this magnet ring with this drive IC and export the Hall IC of the sense of current of this stator coil to notify this drive IC change;
A power supply is electrically connected with this control unit; And
A trigger switch unit, comprise one first circuits for triggering and one second circuits for triggering of being electrically connected with this Hall IC and this power supply respectively, these first circuits for triggering have first trigger end that is electrically connected with one first derailing switch, a second switch device that is electrically connected between this first derailing switch and this Hall IC, and these second circuits for triggering have the 3rd derailing switch that is electrically connected with this Hall IC and second trigger end that is electrically connected with the 3rd derailing switch, and make this first trigger end and this second trigger end receive the source of same triggering signal, when this first trigger end and this second trigger end all are not triggered, this first derailing switch and this not conducting of three derailing switches, this then conducting of second switch device, this Hall IC is notified this drive IC to control this DC fan to rotate towards a specific direction, in addition when this first trigger end was triggered by a triggering signal with this second trigger end while, the conducting simultaneously of this first derailing switch and the 3rd derailing switch, this not conducting of second switch device, and make this power supply that this Hall IC is electrically connected just, the negative polarity commutation, and notify this drive IC to control this DC fan counter-rotating.
The positive and reverse rotation control circuit device of DC fan described in the utility model, described first derailing switch, second switch device, the 3rd derailing switch are transistor, all definition has base terminal, emitter-base bandgap grading end and collector terminal, this first trigger end is taken from the base terminal of this first derailing switch, and this second trigger end is taken from the base terminal of the 3rd derailing switch.
The positive and reverse rotation control circuit device of DC fan described in the utility model, the collector terminal of this first derailing switch are connected a resistor respectively with the collector terminal of this second switch device and are connected to this power supply more jointly.
The beneficial effects of the utility model are: first of these first circuits for triggering trigger and second trigger end of these second circuits for triggering by triggering simultaneously, positive and negative polarity commutation with the power supply that directly forces Hall IC and be electrically connected, make Hall IC can notify this drive IC to control this DC fan counter-rotating, because the utility model is just in time changed the positive and negative polarity of the power supply of this Hall IC, can reach and make fan produce rotating, therefore can effectively reduce the element that electric current passes through, reduce the consumption of power, and control mode is easy, and then can reduce cost.
Description of drawings
Fig. 1 is a circuit diagram, and PCT WO2006/089605 A1 patent is described;
Fig. 2 is a calcspar, and a preferred embodiment of the positive and reverse rotation control circuit device of the utility model DC fan is described;
Fig. 3 is a circuit diagram, the circuit arrangement aspect of each component units of this preferred embodiment of aid illustration.
Embodiment
Below in conjunction with drawings and Examples the utility model is elaborated.
Consult Fig. 2, Fig. 3, be a preferred embodiment of the positive and reverse rotation control circuit device 2 of the utility model DC fan, this positive and reverse rotation control circuit device 2 comprises a control unit 21, the 22 and trigger switch unit 23 of power supply (Vcc) that are electrically connected with this control unit 21.
This control unit 21 comprises a drive IC 211 and the Hall IC 212 that is electrically connected with this drive IC 211 that can export a drive signal.And this power supply (Vcc) 22 is in order to supply each unit required electric power.In addition, this trigger switch unit 23 comprises one first circuits for triggering 231 and one second circuits for triggering 232 that are electrically connected with this Hall IC 212 and this power supply (Vcc) 22 respectively, these first circuits for triggering 231 have first trigger end 233 that is electrically connected with one first a derailing switch Q1 and a resistor R 6, a second switch device Q2 who is electrically connected between this first derailing switch Q1 and this Hall IC 212, the first derailing switch Q1 and second switch device Q2 do explanation with the transistor form, the two has all defined a base terminal B, an one emitter-base bandgap grading end E and a collector terminal C, this first trigger end 233 is taken from the base terminal B of this first derailing switch Q1, and this first derailing switch Q1 is connected a resistor R 1 respectively with the collector terminal C of this second switch device Q2, R2 is connected to this power supply (Vcc) 22 more jointly.In addition, these second circuits for triggering 232 have the 3rd a derailing switch Q3 who is electrically connected with this Hall IC 212 and second trigger end 234 that is electrically connected with the 3rd derailing switch Q3, the 3rd derailing switch Q3 also does explanation with the transistor form, same definition has a base terminal B, an emitter-base bandgap grading end E and a collector terminal C, and this second trigger end 234 connects the base terminal B of the 3rd derailing switch Q3 by a resistor R 7; Moreover first trigger end 233 and second trigger end 234 receive the source of same triggering signal.Wherein, the source of this triggering signal has a variety of, for example, suppose that DC fan of the present utility model is one to be installed in the ventilation fan between the indoor and outdoor, if when indoor air quality belongs to normal range (NR), fan runs well, thereby in outdoor air suction chamber, when surpassing arm's length standard if indoor air quality is relatively poor, the air quality detecting system will send a triggering signal and give the trigger switch unit, making the counter-rotating of this fan, thereby room air is expelled to outdoor.
Consult Fig. 2, Fig. 3, in the use, this positive and reverse rotation control circuit device 2 is applied to control the impeller 33 generation rotatings of DC fan, be connected with the stator coil 31 of DC fan by output connecting pin this drive IC 211, first trigger end 233 of this trigger switch unit 23 then is connected to a control system that is connected with this DC fan with second trigger end 234, when this control system is not sent triggering signal, the first derailing switch Q1 and the 3rd derailing switch Q3 conducting that all is not triggered this moment, the first derailing switch Q1 and the 3rd derailing switch Q3 all are in open-circuit condition, second switch device Q2 then is a conducting state, 22 the 4th pin input Hall IC 212 of power supply this moment (Vcc) by resistor R 3 and Hall IC 212, this moment Hall IC 212 the 4th pin be the positive pole+, the 2nd pin of Hall IC 212 then owing to this second switch device Q2 be switched on be in ground state be negative pole-, Hall IC 212 will normally be notified this drive IC to output current to this stator coil 31 to produce the magnetic flux of a specific direction this moment, and respond to the rotation that the magnet ring 32 of this DC fan produces corresponding direction with the impeller 33 that drives this DC fan.
In addition, this control system is required according to environment and a triggering signal that in good time send triggers first trigger end 233 and second trigger end 234 of this trigger switch unit 23 simultaneously, this moment first derailing switch Q1 and equal conducting of the 3rd derailing switch Q3 and form ground connection, the base stage B of second switch device Q2 because of the conducting ground connection of the first derailing switch Q1 just as the not conducting of opening circuit, the electric power of power Vcc can pass through resistor R 2, the 2nd pin of Hall IC 212 imported Hall IC 212 and is anodal (+), the 4th pin that connects the Hall IC 212 of the 3rd derailing switch Q3 then is in ground state and is negative pole (-), so, the power supply that directly makes this Hall IC 212 just, negative polarity is exchanged (polarity as shown in Fig. 3 bracket is with original opposite), then this Hall IC 212 will directly be notified this electric current that drive IC 211 outputs make this stator coil 31 produce in contrast to aforementioned flow direction, and respond to the impeller 33 generation counter-rotatings of magnet ring 32 these DC fan of drive of this DC fan.
By above explanation as can be known, the positive and reverse rotation control circuit device 2 of the utility model DC fan is by above-mentioned structure design, utilize and trigger first trigger end 233 of first circuits for triggering 231 and second trigger end 234 of second circuits for triggering 232 simultaneously, directly to force power supply that Hall IC 212 is electrically connected just, the negative polarity commutation, make Hall IC 212 can and then notify this this DC fan counter-rotating of drive IC 211 controls, because the power supply that the utility model is just in time changed this Hall IC 212 just, negative polarity, can make DC fan produce rotating, therefore for above-mentioned prior art, just can effectively reduce the element that electric current passes through, so can effectively reduce the consumption of power, and control mode is easy, and can reduce cost simultaneously.
Claims (3)
1. the positive and reverse rotation control circuit device of a DC fan, be electrically connected with the stator coil of a DC fan, and can export the electric current that makes this stator coil produce different flow directions, drive the rotation that the impeller of this DC fan produces corresponding direction with the magnet ring of responding to this DC fan, it is characterized in that this positive and reverse rotation control circuit device comprises:
A control unit comprises that a drive IC that is electrically connected with this stator coil and can output drive signal and one are electrically connected the magnetic polarity that also can respond to this magnet ring with this drive IC and export the Hall IC of the sense of current of this stator coil to notify this drive IC change;
A power supply is electrically connected with this control unit; And
A trigger switch unit, comprise one first circuits for triggering and one second circuits for triggering of being electrically connected with this Hall IC and this power supply respectively, these first circuits for triggering have first trigger end that is electrically connected with one first derailing switch, a second switch device that is electrically connected between this first derailing switch and this Hall IC, and these second circuits for triggering have the 3rd derailing switch that is electrically connected with this Hall IC and second trigger end that is electrically connected with the 3rd derailing switch, and make this first trigger end and this second trigger end receive the source of same triggering signal, when this first trigger end and this second trigger end all are not triggered, this first derailing switch and the 3rd not conducting of derailing switch, this then conducting of second switch device, this Hall IC is notified this drive IC to control this DC fan to rotate towards a specific direction, in addition when this first trigger end was triggered by a triggering signal with this second trigger end while, the conducting simultaneously of this first derailing switch and the 3rd derailing switch, this not conducting of second switch device, and make this power supply that this Hall IC is electrically connected just, the negative polarity commutation, and notify this drive IC to control this DC fan counter-rotating.
2. the positive and reverse rotation control circuit device of DC fan according to claim 1, it is characterized in that, described first derailing switch, second switch device, the 3rd derailing switch are transistor, all definition has base terminal, emitter-base bandgap grading end and collector terminal, this first trigger end is taken from the base terminal of this first derailing switch, and this second trigger end is taken from the base terminal of the 3rd derailing switch.
3. the positive and reverse rotation control circuit device of DC fan according to claim 2 is characterized in that, the collector terminal of this first derailing switch is connected a resistor respectively and is connected to this power supply jointly with the collector terminal of this second switch device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201488503U CN201656887U (en) | 2010-03-22 | 2010-03-22 | Positive, negative rotation control circuit device of a direct current fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201488503U CN201656887U (en) | 2010-03-22 | 2010-03-22 | Positive, negative rotation control circuit device of a direct current fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201656887U true CN201656887U (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201488503U Expired - Lifetime CN201656887U (en) | 2010-03-22 | 2010-03-22 | Positive, negative rotation control circuit device of a direct current fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201656887U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI426675B (en) * | 2010-12-31 | 2014-02-11 | Delta Electronics Inc | Fan systems, fan control circuits and fan control methods |
| CN105352034A (en) * | 2015-10-27 | 2016-02-24 | 重庆绿彰科技发展有限公司 | Efficient HEPA combined type filter ventilator |
| CN104488188B (en) * | 2012-07-23 | 2016-12-14 | 株式会社明电舍 | Motor drive circuit |
-
2010
- 2010-03-22 CN CN2010201488503U patent/CN201656887U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI426675B (en) * | 2010-12-31 | 2014-02-11 | Delta Electronics Inc | Fan systems, fan control circuits and fan control methods |
| CN104488188B (en) * | 2012-07-23 | 2016-12-14 | 株式会社明电舍 | Motor drive circuit |
| CN105352034A (en) * | 2015-10-27 | 2016-02-24 | 重庆绿彰科技发展有限公司 | Efficient HEPA combined type filter ventilator |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |