CN202203144U - Reverse rotation resisting fan - Google Patents
Reverse rotation resisting fan Download PDFInfo
- Publication number
- CN202203144U CN202203144U CN2011202853138U CN201120285313U CN202203144U CN 202203144 U CN202203144 U CN 202203144U CN 2011202853138 U CN2011202853138 U CN 2011202853138U CN 201120285313 U CN201120285313 U CN 201120285313U CN 202203144 U CN202203144 U CN 202203144U
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- China
- Prior art keywords
- reverse rotation
- fan
- counter
- synchronous motor
- blower fan
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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.)
- Expired - Lifetime
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- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The utility model relates to a fan, in particular to a reverse rotation resisting fan. In the reverse rotation resisting fan, whether the fan is rotated reversely can be detected before the fan starts, then the reverse rotation is restrained, and then the reverse rotation resisting fan of a positive rotation permanent magnet synchronous motor is started. The reverse rotation resisting fan comprises a single chip and the permanent magnet synchronous motor, wherein a control circuit is arranged between the single chip and the permanent magnet synchronous motor; and a reverse rotation brake circuit and a reverse rotation detection circuit are arranged between the single chip and the control circuit. In the reverse rotation resisting fan, the reverse rotation brake circuit and the reverse rotation detection circuit are arranged between the single chip and the control circuit, so that whether the fan is rotated reversely can be detected, and the reverse rotation can be restrained, then the permanent magnet synchronous motor is started for positive rotation, therefore, the fan is effectively protected, and loss is reduced.
Description
Technical field
The utility model relates to a kind of blower fan, specifically, relates to a kind of anti-reverse blower fan.
Background technique
Outdoor fan of air-conditioner can receive the influence of natural causes, and such as by the counter-rotating of blowing of high wind, this moment, blower fan should be able to normal starting.Because whether the speed controlling that need locate rotor-position and carry out open loop during the starting of the permanent-magnet synchronous blower fan of position-sensor-free therefore at the blower fan prestart, need reverse to blower fan and judge, and carry out reverting system and move.Not only heat exchange causes negative effect to air-conditioning for blower fan counter-rotating, and the generated energy that causes of counter-rotating causes loss to the drive circuit of air-conditioning.Across-the-line starting is adopted in blower fan control in the past mostly, causes blower fan step-out even damage easily.
Summary of the invention
Whether the anti-reverse blower fan of the utility model has overcome above-mentioned defective, provide a kind of and can before fan starting, detect blower fan and reverse, and prevents counter-rotating then, restarts the anti-reverse blower fan that just changes permagnetic synchronous motor.
The technological scheme of the anti-reverse blower fan of the utility model is such: it comprises single-chip microcomputer, permagnetic synchronous motor, between single-chip microcomputer and the permagnetic synchronous motor control circuit is set, and counter-rotating braking circuit and counter-rotating testing circuit are set between single-chip microcomputer and the control circuit.
The AD interface of counter-rotating testing circuit and single-chip microcomputer is connected, and the AD interface is provided with the sampling conversion circuit.
The counter-rotating testing circuit divides three the tunnel, links to each other with the three-phase of permagnetic synchronous motor respectively, and each road counter-rotating testing circuit is provided with dividing cell and amplitude limit unit.
It is 0V ~ 5V that the voltage of AD interface is provided with scope.
Counter-rotating braking circuit and counter-rotating testing circuit are set between anti-reverse blower fan single-chip microcomputer of the utility model and the control circuit; Can detect blower fan and whether reverse, and can prevent counter-rotating, and then the startup permagnetic synchronous motor just changes; Protect blower fan effectively, and reduced loss.
Description of drawings
Fig. 1 is the anti-reverse blower fan control skeleton diagram of the utility model;
Fig. 2 is the structural representation of the anti-reverse blower fan of the utility model;
Fig. 3 is that the current diagram of just changeing startup is braked in the utility model counter-rotating.
Embodiment
It comprises single-chip microcomputer, permagnetic synchronous motor the anti-reverse blower fan of the utility model, between single-chip microcomputer and the permagnetic synchronous motor control circuit is set, and counter-rotating braking circuit and counter-rotating testing circuit are set between single-chip microcomputer and the control circuit.The AD interface of counter-rotating testing circuit and single-chip microcomputer is connected, and the AD interface is provided with the sampling conversion circuit.The counter-rotating testing circuit divides three the tunnel, links to each other with the three-phase of permagnetic synchronous motor respectively, and each road counter-rotating testing circuit is provided with dividing cell and amplitude limit unit.It is 0V ~ 5V that the voltage of AD interface is provided with scope.
The anti-reverse blower fan of the utility model is before the starting of permanent-magnet synchronous blower fan; The counter-rotating testing circuit is to the detection of the three-phase voltage on the permagnetic synchronous motor power line; If counter-rotating, natural wind can drag rotor permanent magnet and rotate, permanent-magnetic synchronous motor stator can induce sinusoidal counterelectromotive force; And then on the permagnetic synchronous motor power line, produce sinusoidal voltage, through the AD port of single-chip microcomputer its sample conversion is obtained the permagnetic synchronous motor back-emf signal again through this voltage being carried out electric resistance partial pressure.This circuit not only can obtain blower fan turning through the phase sequence of three-phase back-emf signal, and can obtain rotation speed of fan according to the counterelectromotive force frequency.Afterwards, with reference to Fig. 1, the size that determines to apply retarding torque according to the counter-rotating rotation speed of fan is controlled in the counter-rotating braking, makes it can brake stall rapidly.The current waveform schematic representation of counter-rotating braking is as shown in Figure 3.In addition; Diode among Fig. 2 in the counter-rotating testing circuit plays the amplitude limit effect, if counterelectromotive force surpasses the ability that can brake, then diode current flow; The AD port voltage of single-chip microcomputer is limited at+5V; The reverse load torque that this moment, natural wind produced surpasses the forward torque output that can brake, and the counter-rotating braking can't be implemented, and this moment will be by single-chip microcomputer to the upper-position unit output alarm.At last, the permagnetic synchronous motor of counter-rotating braking stall through positioning control after, just changeing starting, get into normally and control.
In addition, though permagnetic synchronous motor can just change starting, if natural wind is bigger, make the counter-rotating torque bigger, the square ability of just walking around is descended to some extent, the fast scope of just walking around can be weakened.If just walking around speed can not reach the rotating speed of air-conditioning heat exchange requirement the time because natural wind is more greatly a blower fan, single-chip microcomputer can make blower fan remain on possible maximum (top) speed, and sends the excessive information of natural wind to upper-position unit, is taken further measures by upper-position unit.
The above; It only is the preferred embodiment of the utility model; Be not to be the restriction of the utility model being made other form, any professional and technical personnel of being familiar with possibly utilize the technology contents of above-mentioned announcement to change or be modified as the equivalent embodiment of equivalent variations.But every the utility model technological scheme content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of the utility model technological scheme according to the technical spirit of the utility model.
Claims (4)
1. anti-reverse blower fan, it comprises single-chip microcomputer, permagnetic synchronous motor, between single-chip microcomputer and the permagnetic synchronous motor control circuit is set, and it is characterized in that, counter-rotating braking circuit and counter-rotating testing circuit are set between single-chip microcomputer and the control circuit.
2. anti-reverse blower fan according to claim 1 is characterized in that, the AD interface of counter-rotating testing circuit and single-chip microcomputer is connected, and the AD interface is provided with the sampling conversion circuit.
3. anti-reverse blower fan according to claim 1 is characterized in that, the counter-rotating testing circuit divides three the tunnel, links to each other with the three-phase of permagnetic synchronous motor respectively, and each road counter-rotating testing circuit is provided with dividing cell and amplitude limit unit.
4. anti-reverse blower fan according to claim 1 is characterized in that, it is 0V ~ 5V that the voltage of AD interface is provided with scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202853138U CN202203144U (en) | 2011-08-08 | 2011-08-08 | Reverse rotation resisting fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202853138U CN202203144U (en) | 2011-08-08 | 2011-08-08 | Reverse rotation resisting fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202203144U true CN202203144U (en) | 2012-04-25 |
Family
ID=45967266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202853138U Expired - Lifetime CN202203144U (en) | 2011-08-08 | 2011-08-08 | Reverse rotation resisting fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202203144U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954010A (en) * | 2014-04-30 | 2014-07-30 | 广东威灵电机制造有限公司 | Air-conditioner outdoor fan starting control method and control device and air-conditioner adopting same |
| CN104218857A (en) * | 2014-08-19 | 2014-12-17 | 广东威灵电机制造有限公司 | Air conditioner and method and system for controlling starting of outdoor fans of air conditioner |
| CN104564754A (en) * | 2013-10-12 | 2015-04-29 | 珠海格力电器股份有限公司 | Fan detection control method and system |
| CN104753404A (en) * | 2013-12-26 | 2015-07-01 | 台达电子工业股份有限公司 | Fan motor brake device and control method thereof |
| CN104779854A (en) * | 2015-03-19 | 2015-07-15 | 四川长虹电器股份有限公司 | Upwind drag control method for outdoor fan |
| CN104779849A (en) * | 2015-03-19 | 2015-07-15 | 四川长虹电器股份有限公司 | Method for detecting and controlling positive/negative rotation of outdoor fan during upwind running |
| CN106762753A (en) * | 2017-02-10 | 2017-05-31 | 联想(北京)有限公司 | A kind of fan, steering monitoring method and electronic equipment |
| CN108131317A (en) * | 2017-12-04 | 2018-06-08 | 深圳创维空调科技有限公司 | A kind of outer wind turbine of air-conditioning and its counnter attack rotary driving device and method |
| CN109268299A (en) * | 2018-08-17 | 2019-01-25 | 珠海格力电器股份有限公司 | Fan steering detection device and method and fan |
| CN110260472A (en) * | 2019-05-10 | 2019-09-20 | 珠海格力电器股份有限公司 | Fan control method, device, equipment, outdoor unit and air conditioner |
| CN110868117A (en) * | 2018-08-27 | 2020-03-06 | 硕呈科技股份有限公司 | Fixed rotation direction starting method of single-phase sensorless direct current brushless motor |
| CN111740656A (en) * | 2020-06-17 | 2020-10-02 | 深圳和而泰智能控制股份有限公司 | Motor control method and related device |
| CN113719973A (en) * | 2021-08-30 | 2021-11-30 | Tcl空调器(中山)有限公司 | Air conditioner headwind control method and device, air conditioner and readable storage medium |
-
2011
- 2011-08-08 CN CN2011202853138U patent/CN202203144U/en not_active Expired - Lifetime
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564754A (en) * | 2013-10-12 | 2015-04-29 | 珠海格力电器股份有限公司 | Fan detection control method and system |
| CN104753404A (en) * | 2013-12-26 | 2015-07-01 | 台达电子工业股份有限公司 | Fan motor brake device and control method thereof |
| CN104753404B (en) * | 2013-12-26 | 2018-01-30 | 台达电子工业股份有限公司 | Fan motor brake gear and its control method |
| CN103954010A (en) * | 2014-04-30 | 2014-07-30 | 广东威灵电机制造有限公司 | Air-conditioner outdoor fan starting control method and control device and air-conditioner adopting same |
| CN104218857A (en) * | 2014-08-19 | 2014-12-17 | 广东威灵电机制造有限公司 | Air conditioner and method and system for controlling starting of outdoor fans of air conditioner |
| CN104218857B (en) * | 2014-08-19 | 2017-10-31 | 广东威灵电机制造有限公司 | A kind of air conditioner and its outdoor fan method for starting-controlling and system |
| CN104779854A (en) * | 2015-03-19 | 2015-07-15 | 四川长虹电器股份有限公司 | Upwind drag control method for outdoor fan |
| CN104779849A (en) * | 2015-03-19 | 2015-07-15 | 四川长虹电器股份有限公司 | Method for detecting and controlling positive/negative rotation of outdoor fan during upwind running |
| CN104779854B (en) * | 2015-03-19 | 2018-04-10 | 四川长虹电器股份有限公司 | Outdoor fan drags control method against the wind |
| CN106762753B (en) * | 2017-02-10 | 2019-04-23 | 联想(北京)有限公司 | A kind of fan, steering monitoring method and electronic equipment |
| CN106762753A (en) * | 2017-02-10 | 2017-05-31 | 联想(北京)有限公司 | A kind of fan, steering monitoring method and electronic equipment |
| CN108131317A (en) * | 2017-12-04 | 2018-06-08 | 深圳创维空调科技有限公司 | A kind of outer wind turbine of air-conditioning and its counnter attack rotary driving device and method |
| CN108131317B (en) * | 2017-12-04 | 2020-06-09 | 深圳创维空调科技有限公司 | Air conditioner external fan and anti-reverse driving device and method thereof |
| CN109268299A (en) * | 2018-08-17 | 2019-01-25 | 珠海格力电器股份有限公司 | Fan steering detection device and method and fan |
| CN109268299B (en) * | 2018-08-17 | 2023-11-03 | 珠海格力电器股份有限公司 | Fan steering detection device, detection method and fan |
| CN110868117A (en) * | 2018-08-27 | 2020-03-06 | 硕呈科技股份有限公司 | Fixed rotation direction starting method of single-phase sensorless direct current brushless motor |
| CN110868117B (en) * | 2018-08-27 | 2021-06-25 | 硕呈科技股份有限公司 | Fixed rotation direction starting method of single-phase sensorless direct current brushless motor |
| CN110260472A (en) * | 2019-05-10 | 2019-09-20 | 珠海格力电器股份有限公司 | Fan control method, device, equipment, outdoor unit and air conditioner |
| CN110260472B (en) * | 2019-05-10 | 2020-11-13 | 珠海格力电器股份有限公司 | Fan control method, device, equipment, outdoor unit and air conditioner |
| CN111740656A (en) * | 2020-06-17 | 2020-10-02 | 深圳和而泰智能控制股份有限公司 | Motor control method and related device |
| CN113719973A (en) * | 2021-08-30 | 2021-11-30 | Tcl空调器(中山)有限公司 | Air conditioner headwind control method and device, air conditioner and readable storage medium |
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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: 20120425 |