CN203146377U - Driving circuit for outer rotor electronic control type air blower adjusters - Google Patents
Driving circuit for outer rotor electronic control type air blower adjusters Download PDFInfo
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- CN203146377U CN203146377U CN 201220647496 CN201220647496U CN203146377U CN 203146377 U CN203146377 U CN 203146377U CN 201220647496 CN201220647496 CN 201220647496 CN 201220647496 U CN201220647496 U CN 201220647496U CN 203146377 U CN203146377 U CN 203146377U
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Abstract
The utility model relates to a driving circuit and a driving method for outer rotor electronic control type air blower adjusters. The driving method is characterized by comprising the following steps: utilizing an AC (Alternating Current)/DC (Direct Current) conversion chip to generate power supply with an isolated property to provide a working power supply for an operational amplifier chip I and a comparator chip II, utilizing the operational amplifier chip I to produce a triangular wave signal, then entering the comparator chip II to carry out signal processing, then producing a PWM (Pulse-Width Modulation) signal, connecting the PWM signal with a rotating speed control terminal of an air blower control chip after going through an optocoupler I to realize the speed regulation function, feeding back an air blower rotating speed signal FG to a power supply system of an air blower user through an optocoupler II in real time, detecting a VS voltage in real time by utilizing a voltage detecting return circuit, rising A voltage when the VS voltage rises, turning the voltage of a control chip RES terminal into a low level when the VS voltage rises to a setting value and the A voltage reaches the reference voltage of a comparator chip III, cutting off a driving signal needed by a power module immediately by the control chip, and realizing an over-voltage protection return circuit.
Description
Technical field
The utility model relates to a kind of outer rotor blower fan power-supply system that can either fundamentally solve and is burnt, a kind of external rotor electronics control formula blower fan regulator drive circuit that the backward voltage that can avoid the counterelectromotive force of blower fan own to produce again damages the intelligent power control module belongs to the outer rotor blower fan alignment circuit and makes the field.
Background technique
CN102364114A, title " a kind of remote-control speed-regulation outer rotor shaft flow fan ", comprise fan blade, guard, terminal box, motor, it is characterized in that: comprise signal receiving module, transformation rectification circuit, demoding circuit, circuit for controlling motor, control signal emitting circuit, control signal receiving circuit, circuit for controlling motor in the described terminal box, described transformation rectification circuit is converted to Ac in the small voltage direct current that uses for each circuit; Described control signal emitting circuit is sent to the control signal receiving circuit with code signal, described control signal receiving circuit is transferred to the demoding circuit decoding with code signal, transfer to circuit for controlling motor, described circuit for controlling motor receives decoding back signal control motor rotating speed, and described signal receiving module coupling has the speed regulating control signal emission module of remote control.Its deficiency: both can't realize isolating speed governing, and not have good overvoltage protection again, and cause fan power system easy burn-out.
CN2921380Y, title " external rotor permanent magnet brshless DC motor speed governing centrifugal blower ", comprise brushless, permanently excited direct current motor and PWM inverter, the input end of PWM inverter connects power supply, the output terminal of PWM inverter connects brushless, permanently excited direct current motor, it is characterized in that arranging control circuit and sensor, the sensor output terminal connects the input end of control circuit, and the output terminal of control circuit connects the control end of PWM inverter.Its deficiency: both can't realize isolating speed governing, and not have good overvoltage protection again, and cause fan power system easy burn-out.
CN 102312847A; title " the integrated centrifugal fan that a kind of position-sensor-free drives "; under-voltage and over-voltage detection circuit is the method that adopts big resistive isolation; busbar voltage is converted into the analogue signal of control chip input by a simple discharge circuit; realize under-voltage and the overvoltage detection; this amplifier be input as busbar voltage; input resistance is got very big; feedback resistance is very little; thereby the input voltage that makes actual amplifier pin is not very big; the electric current that flows through is also very little; realized that the effect of isolating has also realized the detection of voltage simultaneously; counter electromotive force detection circuit is a low-pass filter; adopt " terminal voltage method " to realize no sensor control; by the processing to the voltage-to-ground of motor three-phase UVW; obtain rotor-position signal; the motor three-phase voltage is at first by low pass filter filters out high-frequency interferencing signal and step-down; remove direct current component by electric capacity again; compare the signal of handling with by the dummy neutral voltage that three-phase constructs then; thereby obtain the signal of back electromotive force zero-crossing; through detecting electric current; rotating speed; dutycycle; the deviation angle that busbar voltage and the parameter of electric machine are determined electric current afterflow influence compensates; make commutation constantly near best commutation, that guarantees to commutate correctly carries out constantly.Its deficiency: the dc brushless external rotor blower fan that is not suitable for the input of the application's ac power supply.
Summary of the invention
Purpose of design: avoid the deficiency in the background technique, design a kind of outer rotor blower fan power-supply system that can either fundamentally solve and burnt, a kind of external rotor electronics control formula blower fan regulator drive circuit that the backward voltage that can avoid the counterelectromotive force of blower fan own to produce again damages the intelligent power control module.
Design proposal: 1, the related external rotor electronics control blower fan of the application is the brush DC blower fan of ac power supply input, the power-supply system of the power-supply system of this brush DC blower fan and blower fan user's rotational speed regulation is two independently systems, as if needing the control rotation speed of fan two power-supply systems must be realized isolating otherwise two power-supply systems of meeting scaling loss.The application is on the basis of the existing rotating speed alignment circuit of outer rotor blower fan for this reason, the power supply that utilizes AC/DC conversion chip to generate to have isolation characteristic provides working power for operational amplifier chip and comparator chip, utilizing the operational amplifier chip to produce to enter behind the triangular signal comparator chip to carry out signal handles the back and produces pwm signal, this pwm signal is connected with the rotating speed control port of blower fan control chip by light idol back again, realize speed-regulating function, rotation speed of fan signal FG then feeds back to blower fan user power-supply system in real time by optocoupler, thereby realizes purpose of design of the present utility model.2, the application's external rotor electronics control blower fan is the brush DC blower fan of ac power supply input.The inner permanent magnet that uses of this blower fan, when there is counterelectromotive force in blower fan in rotary course, during the blower fan proper functioning, the VS voltage of intelligent power control module end is VDC after the rectification.When rotation speed of fan from a high speed to the low speed adjustment process, because the inertia of wind wheel itself, cause the actual speed of blower fan to be higher than the theoretical rotational speed of the control chip of blower fan, the counterelectromotive force of blower fan itself produces backward voltage and is added to after the rectification at VS place of intelligent power control module end itself on the VDC, there is linear relationship in the inertia of the size of backward voltage and the maximum speed of blower fan and wind wheel, be that rotating speed is more high, inertia is more big, backward voltage is more high.After the VS place voltage of intelligent power control module end after the stack was higher than the power model maximum working voltage, then power model easily was damaged.The application is on the basis of the existing rotating speed alignment circuit of outer rotor blower fan for this reason; utilize the voltage detecting loop to detect the VS voltage of intelligent power control module end in real time; when the VS voltage of intelligent power control module end raises; comparator chip III signal input part A point voltage also increases; when VS voltage is increased to setting value; after comparator chip III signal input part A point voltage reaches voltage and reaches comparator chip III conducting voltage; make brush DC blower fan logical drive chip RES terminal voltage become low level; brush DC blower fan logical drive chip is the needed driving signal of switch-off power module immediately; the winding of blower fan utilization itself consumes U1 and makes it to reduce until identical with VDC behind the direct current, realizes the overvoltage protection loop.
Technological scheme: a kind of external rotor electronics control formula blower fan regulator drive circuit is characterized in that being made of isolation characteristic alignment circuit, overvoltage crowbar; Power output end output+10V the power supply of insulating power supply in the described isolation characteristic alignment circuit, the grounding end GND2 of insulating power supply connects operational amplifier chip I grounding end, the grounding end of comparator chip II, the signal output part of optocoupler II, capacitor C 1 negative pole, diode D1 negative pole, capacitor C 1 positive pole connects the signal input part of operational amplifier chip I, diode D1 positive pole switches through fast output terminal, the signal input part of optocoupler II connects the FG signal end, the signal termination Intelligent Power Module signal input part of insulating power supply, the signal output part of operational amplifier chip I connects the signal input part of comparator chip II, the signal output part of comparator chip II connects the signal input part of optocoupler I, and the signal output part of optocoupler I connects brush DC blower fan logical drive chip signal input end; Described overvoltage crowbar is by resistance R 1; resistance R 2; resistance R 3; comparator chip III and brush DC blower fan logical drive chip constitute; resistance R 1; resistance R 2 one ends also connect comparator chip III signal input part; another termination Vs of resistance R 1; resistance R 2 the other end ground connection; comparator chip III signal output part connects Res end and resistance R 3 one ends of brush DC blower fan logical drive core; the Vreg end of resistance R 3 another termination brush DC blower fan logical drive cores; rotating speed control port in the brush DC blower fan logical drive chip connects the signal output part of optocoupler I in the isolation characteristic alignment circuit, the signal input part of brush DC blower fan logical drive chip signal output termination Intelligent Power Module and brush DC blower fan.
The utility model is compared with background technique, and the one, not only realized the isolation characteristic speed governing of external rotor electronics control blower fan, and the easy deficiency of burning of the power-supply system of having avoided background technique to exist; The design of excess voltage protection has fundamentally avoided the backward voltage of the counterelectromotive force generation of blower fan own to the damage of intelligent power control module.
Description of drawings
Fig. 1 is the schematic representation of external rotor electronics control formula blower fan regulator drive circuit.
Embodiment
Embodiment 1: with reference to accompanying drawing 1.A kind of external rotor electronics control formula blower fan regulator drive circuit is made of isolation characteristic alignment circuit, overvoltage crowbar; Power output end output+10V the power supply of insulating power supply in the described isolation characteristic alignment circuit, the grounding end GND2 of insulating power supply connects operational amplifier chip I grounding end, the grounding end of comparator chip II, the signal output part of optocoupler II, capacitor C 1 negative pole, diode D1 negative pole, capacitor C 1 positive pole connects the signal input part of operational amplifier chip I, diode D1 positive pole switches through fast output terminal, the signal input part of optocoupler II connects the FG signal end, the signal termination Intelligent Power Module signal input part of insulating power supply, the signal output part of operational amplifier chip I connects the signal input part of comparator chip II, the signal output part of comparator chip II connects the signal input part of optocoupler I, and the signal output part of optocoupler I connects brush DC blower fan logical drive chip signal input end; Described overvoltage crowbar is by resistance R 1; resistance R 2; resistance R 3; comparator chip III and brush DC blower fan logical drive chip constitute; resistance R 1; resistance R 2 one ends also connect comparator chip III signal input part; another termination Vs of resistance R 1; resistance R 2 the other end ground connection; comparator chip III signal output part connects Res end and resistance R 3 one ends of brush DC blower fan logical drive core; the Vreg end of resistance R 3 another termination brush DC blower fan logical drive cores; rotating speed control port in the brush DC blower fan logical drive chip connects the signal output part of optocoupler I in the isolation characteristic alignment circuit, the signal input part of brush DC blower fan logical drive chip signal output termination Intelligent Power Module and brush DC blower fan.Capacitor C 1 two ends and connecting resistance R5, resistance R 5 one ends are connected with the signal input part of resistance R 4 one ends and operational amplifier chip I, and resistance R 4 the other ends are the speed controling signal input end.Diode D1 positive pole switches through fast output terminal by resistance R 6.Brush DC blower fan logical drive chip is provided with the FG interface and is connected with the signal input part FG of optocoupler II.The method for driving of its external rotor electronics control formula blower fan regulator drive circuit: utilize AC/DC conversion chip 0 to generate the power supply with isolation characteristic and working power is provided for operational amplifier chip I and comparator chip II, entering comparator chip II behind the triangular signal that operational amplifier chip I produces carries out producing pwm signal after signal is handled, this pwm signal is connected with the rotating speed control port of blower fan control chip by after the optocoupler I again, realize speed-regulating function, rotation speed of fan signal FG feeds back to blower fan user power-supply system in real time by the optocoupler II; Utilize the voltage detecting loop to detect the VS voltage of intelligent power control module end in real time; when the VS voltage of intelligent power control module end raises; comparator chip III signal input part A point voltage also increases; when the VS voltage of intelligent power control module end is increased to setting value; after comparator chip III signal input part A point voltage reaches reference potential; after the comparator chip III conducting voltage; make brush DC blower fan logical drive chip RES terminal voltage become low level; brush DC blower fan logical drive chip is the needed driving signal of switch-off power module immediately; the winding of blower fan utilization itself consumes U1; make it to reduce until identical with VDC behind the direct current, realize the overvoltage protection loop.
What need understand is: though above-described embodiment is to the mentality of designing of the present utility model detailed text description of contrasting; but these text descriptions; just the simple text of the utility model mentality of designing is described; rather than to the restriction of the utility model mentality of designing; any combination, increase or modification that does not exceed the utility model mentality of designing all falls in the protection domain of the present utility model.
Claims (4)
1. an external rotor electronics control formula blower fan regulator drive circuit is characterized in that being made of isolation characteristic alignment circuit, overvoltage crowbar; Power output end output+10V the power supply of insulating power supply in the described isolation characteristic alignment circuit, the grounding end GND2 of insulating power supply connects operational amplifier chip I grounding end, the grounding end of comparator chip II, the signal output part of optocoupler II, capacitor C 1 negative pole, diode D1 negative pole, capacitor C 1 positive pole connects the signal input part of operational amplifier chip I, diode D1 positive pole switches through fast output terminal, the signal input part of optocoupler II connects the FG signal end, the signal termination Intelligent Power Module signal input part of insulating power supply, the signal output part of operational amplifier chip I connects the signal input part of comparator chip II, the signal output part of comparator chip II connects the signal input part of optocoupler I, and the signal output part of optocoupler I connects brush DC blower fan logical drive chip signal input end; Described overvoltage crowbar is by resistance R 1; resistance R 2; resistance R 3; comparator chip III and brush DC blower fan logical drive chip constitute; resistance R 1; resistance R 2 one ends are connected in parallel and connect comparator chip III signal input part; another termination Vs of resistance R 1; resistance R 2 the other end ground connection; comparator chip III signal output part connects Res end and resistance R 3 one ends of brush DC blower fan logical drive core; the Vreg end of resistance R 3 another termination brush DC blower fan logical drive cores; rotating speed control port in the brush DC blower fan logical drive chip connects the signal output part of optocoupler I in the isolation characteristic alignment circuit, the signal input part of brush DC blower fan logical drive chip signal output termination Intelligent Power Module and brush DC blower fan.
2. external rotor electronics according to claim 1 is controlled formula blower fan regulator drive circuit, it is characterized in that: capacitor C 1 two ends and connecting resistance R5, resistance R 5 one ends are connected with the signal input part of resistance R 4 one ends and operational amplifier chip I, and resistance R 4 the other ends are the speed controling signal input end.
3. external rotor electronics according to claim 1 is controlled formula blower fan regulator drive circuit, and it is characterized in that: diode D1 positive pole switches through fast output terminal by resistance R 6.
4. external rotor electronics according to claim 1 is controlled formula blower fan regulator drive circuit, and it is characterized in that: brush DC blower fan logical drive chip is provided with the FG interface and is connected with the signal input part FG of optocoupler II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220647496 CN203146377U (en) | 2012-11-30 | 2012-11-30 | Driving circuit for outer rotor electronic control type air blower adjusters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220647496 CN203146377U (en) | 2012-11-30 | 2012-11-30 | Driving circuit for outer rotor electronic control type air blower adjusters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203146377U true CN203146377U (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220647496 Withdrawn - After Issue CN203146377U (en) | 2012-11-30 | 2012-11-30 | Driving circuit for outer rotor electronic control type air blower adjusters |
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| CN (1) | CN203146377U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016378A (en) * | 2012-11-30 | 2013-04-03 | 杭州顿力电器有限公司 | Driving circuit and driving method of external rotor electronic control type fan adjuster |
| CN107420334A (en) * | 2017-06-09 | 2017-12-01 | 深圳市盛仕达电子有限公司 | A kind of speed-adjusting and control system of pipeline fan |
-
2012
- 2012-11-30 CN CN 201220647496 patent/CN203146377U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016378A (en) * | 2012-11-30 | 2013-04-03 | 杭州顿力电器有限公司 | Driving circuit and driving method of external rotor electronic control type fan adjuster |
| CN103016378B (en) * | 2012-11-30 | 2015-07-08 | 杭州顿力电器有限公司 | Driving circuit and driving method of external rotor electronic control type fan adjuster |
| CN107420334A (en) * | 2017-06-09 | 2017-12-01 | 深圳市盛仕达电子有限公司 | A kind of speed-adjusting and control system of pipeline fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130821 Effective date of abandoning: 20150708 |
|
| RGAV | Abandon patent right to avoid regrant |