CN201507462U - Brushless DC motor type electric fan - Google Patents
Brushless DC motor type electric fan Download PDFInfo
- Publication number
- CN201507462U CN201507462U CN2009201942921U CN200920194292U CN201507462U CN 201507462 U CN201507462 U CN 201507462U CN 2009201942921 U CN2009201942921 U CN 2009201942921U CN 200920194292 U CN200920194292 U CN 200920194292U CN 201507462 U CN201507462 U CN 201507462U
- Authority
- CN
- China
- Prior art keywords
- motor
- brushless motor
- electric fan
- power transistor
- brushless
- Prior art date
- 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 - Fee Related
Links
Images
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The utility model relates to a brushless dc motor type electric fan, comprising an fan impeller and a motor shaft directly fixedly mounted on the fan impeller. A brushless dc motor is arranged at the intersecting point of the fan impeller and the motor shaft, thus the utilizing efficiency can be improved to 75% to 80% in use, the electric energy can be saved by 40 to 70% than a single-phase ac motor, thereby having high utilizing efficiency and energy-saving effect. The brushless dc motor adopts the continuous speed regulation, thus the regulating range can be wide and the adjustment can be comfortable. When the brushless dc motor is in the low position, the brushless dc motor can be taken as an electric fan. The brushless dc motor type electric fan has small noise and long service life.
Description
[technical field]
The utility model relates to a kind of household electric appliance, specifically is a kind of electric fan of the dc brushless motor formula that is used to dry.
[background technique]
There are various electric fans the existing market, and its most of electric fan comprises and be arranged at outside electric fan support, is arranged at the blast fan of electric fan internal stent and is arranged at motor driver on the blast fan.Described this motor driver generally adopts the interchange single-phase asynchronous motor, and the utilization ratio when making machine operation probably has only 30% ~ 35%, causes its energy waste serious.Fix because of the gear between the motor again, cause the motor speed regulation range narrow.
[model utility content]
Technical purpose of the present utility model be provide in order to solve the problem that above-mentioned prior art exists a kind of utilization ratio height, energy-conservation, regulation range is wide, noise is little and the electric fan of the dc brushless motor formula of long service life.
In order to realize above-mentioned technical problem, the utility model provides a kind of electric fan of dc brushless motor formula, and it comprises blast fan, is used for directly fixedly mounting the machine shaft of blast fan; Be provided with dc brushless motor at blast fan and machine shaft intersection.
According to above-mentioned major technique feature, described dc brushless motor comprise be arranged at peripheral before, rear end cover, before being arranged in, the rotating shaft of rear end cover, before being arranged at, rear end cover form two ends in the rotating shaft in the space before, rear bearing is installed on the wave washer between fore bearing and the front cover, be installed on the jump ring between wave washer and the front cover, before being installed on being positioned in the rotating shaft, rotor magnetic steel between the rear bearing, be used to install the stator module of rotor magnetic steel, be installed on the stator module of rotor magnetic steel periphery, be installed on the circuit board module on the stator module, be installed on the thermal paste between circuit board module and the front cover, before being used for fixing connection, the screw of rear end cover and nut, the following felt pad that is installed on the last felt pad above the circuit board module and is installed on circuit board module inner side surface two ends.
According to above-mentioned major technique feature, described circuit board module comprises and is used to provide the power supply unit of three phase mains supply motor and is used for the control device that power supply frequency is imported in the demand conversion.
According to above-mentioned major technique feature, described control device comprises changer, be connected in motor MOTOR on the changer output terminal, be connected in the pulse duration modulation module (PWM) on the motor MOTOR and be connected in control centre on the pulse duration modulation module output terminal.
According to above-mentioned major technique feature, the power transistor Q1 to Q6 that described changer comprises capacitor C 1 and is connected in parallel in capacitor C 1 two ends respectively, after being connected in series, described power transistor Q1 and power transistor Q2 be connected in parallel in capacitor C 1 two ends, be connected in parallel in capacitor C 1 two ends after described power transistor Q3 and power transistor Q4 are connected in series, be connected in parallel in capacitor C 1 two ends after described power transistor Q5 and power transistor Q6 are connected in series.
According to above-mentioned major technique feature, described circuit board module also comprises overcurrent protector, overheat protector, overvoltage protector and under-voltage protection device.
According to above-mentioned major technique feature, described stator module comprises the enameled cable that rotates stator and be arranged at the rotation stator interior.
According to above-mentioned major technique feature, the both sides of described front and rear cover are respectively arranged with the fixed hole that is used for screw and fixed by nut.
According to above-mentioned major technique feature, described capacitor C 1 two ends also are provided with the AC/DC transducer that is installed on the motor periphery.
Useful technique effect of the present utility model: because of being provided with dc brushless motor at blast fan and machine shaft intersection, making it can improve utilization ratio in use is 75% to 80%, 40% to 70% electric energy be can save than exchanging single phase motor, thereby utilization ratio height and energy-saving effect reached.Again because of dc brushless motor adopts stepless speed regulation, it is wide and regulate comfortable to make that it can reach regulation range.Accomplish when very low when described dc brushless motor, can also be used for electric fan and use, be i.e. dual-use.In addition, the utility model also has the technique effect of the little and long service life of noise.
Below in conjunction with drawings and Examples, the technical solution of the utility model is described in further detail.
[description of drawings]
Fig. 1 is the schematic representation of electric fan in the utility model;
Fig. 2 is the STRUCTURE DECOMPOSITION schematic representation of dc brushless motor in the utility model;
Fig. 3 is the schematic cross-section of dc brushless motor in the utility model;
Fig. 4 is the line work principle schematic of the electronic parts and components of circuit board module in the utility model.
[embodiment]
Please refer to Fig. 1 to shown in Figure 4, below in conjunction with the electric fan of concrete a kind of dc brushless motor formula, it comprises blast fan 1, is used for directly fixedly mounting the machine shaft of blast fan 1, is provided with dc brushless motor in blast fan 1 and machine shaft intersection.
Described dc brushless motor comprise be arranged at peripheral before, rear end cover 2,3, before being arranged in, rear end cover 2,3 rotating shaft 4, before being arranged at, rear end cover 2, before the two ends in 3 rotating shafts 4 that form in the space, rear bearing 5,6, be installed on the wave washer 7 between fore bearing 5 and the front cover 2, be installed on the jump ring 8 between wave washer 7 and the front cover 2, before being installed on being positioned in the rotating shaft 4, rear bearing 5, rotor magnetic steel 9 between 6, be used to install the stator module 20 of rotor magnetic steel 9, be installed on the stator module 10 of rotor magnetic steel 9 peripheries, be installed on the circuit board module 11 on the stator module 10, be installed on the thermal paste 14 between circuit board module 11 and the front cover 2, before being used for fixing connection, rear end cover 2,3 nut 15, be installed on last felt pad 16 above the circuit board module 11 and the following felt pad 17 that is installed on circuit board module 11 inner side surface two ends.Described stator module 10 comprises the enameled cable that rotates stator and be arranged at the rotation stator interior.The both sides of described front and rear cover 2,3 are respectively arranged with the fixed hole 18 that is used for screw and fixed by nut.
Described circuit board module 11 comprises and is used to provide the power supply unit of three phase mains supply motor and is used for the control device that power supply frequency is imported in the demand conversion.Described circuit board module also comprises overcurrent protector, overheat protector, overvoltage protector and under-voltage protection device.
Described control device comprises changer, be connected in motor MOTOR on the changer output terminal, be connected in the pulse duration modulation module (PWM) on the motor MOTOR and be connected in control centre on the pulse duration modulation module output terminal.The power transistor Q1 to Q6 that described changer comprises capacitor C 1 and is connected in parallel in capacitor C 1 two ends respectively, after being connected in series, described power transistor Q1 and power transistor Q2 be connected in parallel in capacitor C 1 two ends, be connected in parallel in capacitor C 1 two ends after described power transistor Q3 and power transistor Q4 are connected in series, be connected in parallel in capacitor C 1 two ends after described power transistor Q5 and power transistor Q6 are connected in series.Described capacitor C 1 two ends also are provided with the AC/DC transducer that is installed on the motor periphery.
Dc brushless motor is a kind of of synchronous machine, that is to say that the rotating speed of rotor magnetic steel 10 is influenced by the speed of stator module 10 rotating magnetic fields and rotor magnetic steel number of poles (P); Be N=120.f/P, under rotor magnetic steel 9 number of poles fixation case, the frequency that changes stator module 10 rotating magnetic fields just can change the rotating speed of rotor magnetic steel 9.Be arranged at the circuit board module 11 on the dc brushless motor, the frequency of control stator module 10 rotating magnetic fields is also feedback the rotating speed of rotor magnetic steel 9 to control centre and is proofreaied and correct repeatedly, in the hope of reaching the mode near the direct current generator characteristic.That is to say that dc brushless motor can still can control rotor magnetic steel 9 and keep certain rotating speed in the rated load scope when load variations.
Described circuit board module 11 is matched by power supply unit and control device and forms, and power supply unit provides three phase mains and gives motor, and control device then is to change the input power supply frequency on demand.Power supply unit can directly be imported the control device of 15V-310VDC with direct current.Described changer is to power transistor Q6 by 6 power transistor Q1, its divide for the upper arm that constitutes by power transistor Q1, Q3, Q5 and by power transistor Q2, Q4, Q6) underarm that constitutes, last underarm connection motor is as the switch of control flows through motor coil.Control device is the switching frequency of pulse duration modulation module (PWM) decision power transistor Q1 to Q6 formation and the opportunity of changer commutation.When load change, DC brushless motor speed can be stable at setting value and can not change too big speed controlling, so the Hall transducer of energy induction field is equipped with in dc brushless motor inside, loop circuit control as speed, simultaneously also as the foundation of phase sequence control, be mainly used in speed controlling.
Describedly go up the switch that underarm constitutes, flow through the in regular turn coil of stator module 10 inside of electric current is produced forward or counter-rotating magnetic field, and interact, then make its up time or inverse time rotate with the magnet of rotor magnetic steel 9.When rotor magnetic steel 9 rotations induced position of another group signal, control device was opened next group power transistor again again, and so circulation motor just can be rotated further up to control device according to same direction and determine to want rotor magnetic steel 9 to stop then to close upper arm or only open underarm; If dc brushless motor rotor magnet steel is reverse, then the power transistor opening sequence is opposite.
When rotating, the speed that the command signal that control device can be again formed according to the speed of setting and the speed that adds deduct changes is compared or by the software computing, is decided by next group switch conduction and ON time length again.Speed is then opened length inadequately, and speed is excessive then to shorten, and this partially-working is just finished by pulse duration modulation module (PWM).Pulse duration modulation module (PWM) is the fast or slow mode of decision motor speed.Circuit board module 11 also has overcurrent protector, overheat protector, overvoltage protector, under-voltage protection device.
Based on above-mentioned, dc brushless motor have response fast, bigger starting torque, possess the performance that nominal torque can be provided from zero rotating speed to rated speed.
In sum, because being provided with dc brushless motor in blast fan 1 and machine shaft intersection, be 75% to 80% so that it can improve utilization ratio in use, save 40% to 70% electric energy than AC single phase motor, thereby reach utilization ratio height and energy-saving effect. Again because dc brushless motor adopts stepless speed regulation, so that it can reach adjustable range is wide and regulate comfortable. When described dc brushless motor is accomplished when very low, can also be used for electric fan and use, be i.e. dual-use. In addition, the utility model also has the technique effect of the little and long service life of noise.
Claims (9)
1. the electric fan of a dc brushless motor formula, it comprises blast fan, is used for directly fixedly mounting the machine shaft of blast fan; It is characterized in that: be provided with dc brushless motor at blast fan and machine shaft intersection.
2. the electric fan of dc brushless motor formula according to claim 1, it is characterized in that: described dc brushless motor comprise be arranged at peripheral before, rear end cover, before being arranged in, the rotating shaft of rear end cover, before being arranged at, rear end cover form two ends in the rotating shaft in the space before, rear bearing is installed on the wave washer between fore bearing and the front cover, be installed on the jump ring between wave washer and the front cover, before being installed on being positioned in the rotating shaft, rotor magnetic steel between the rear bearing, be used to install the stator module of rotor magnetic steel, be installed on the stator module of rotor magnetic steel periphery, be installed on the circuit board module on the stator module, be installed on the thermal paste between circuit board module and the front cover, before being used for fixing connection, the screw of rear end cover and nut, the following felt pad that is installed on the last felt pad above the circuit board module and is installed on circuit board module inner side surface two ends.
3. the electric fan of dc brushless motor formula according to claim 2 is characterized in that: described circuit board module comprises and is used to provide the power supply unit of three phase mains supply motor and is used for the control device that power supply frequency is imported in the demand conversion.
4. the electric fan of dc brushless motor formula according to claim 3 is characterized in that: described control device comprises changer, be connected in motor MOTOR on the changer output terminal, be connected in the pulse duration modulation module (PWM) on the motor MOTOR and be connected in control centre on the pulse duration modulation module output terminal.
5. the electric fan of dc brushless motor formula according to claim 4, it is characterized in that: the power transistor Q1 to Q6 that described changer comprises capacitor C 1 and is connected in parallel in capacitor C 1 two ends respectively, after being connected in series, described power transistor Q1 and power transistor Q2 be connected in parallel in capacitor C 1 two ends, be connected in parallel in capacitor C 1 two ends after described power transistor Q3 and power transistor Q4 are connected in series, be connected in parallel in capacitor C 1 two ends after described power transistor Q5 and power transistor Q6 are connected in series.
6. according to the electric fan of claim 2 or 3 described dc brushless motor formulas, it is characterized in that: described circuit board module also comprises overcurrent protector, overheat protector, overvoltage protector and under-voltage protection device.
7. the electric fan of dc brushless motor formula according to claim 2 is characterized in that: described stator module comprises the enameled cable that rotates stator and be arranged at the rotation stator interior.
8. the electric fan of dc brushless motor formula according to claim 2 is characterized in that: the both sides of described front and rear cover are respectively arranged with the fixed hole that is used for screw and fixed by nut.
9. the electric fan of dc brushless motor formula according to claim 5 is characterized in that: described capacitor C 1 two ends also are provided with the AC/DC transducer that is installed on the motor periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201942921U CN201507462U (en) | 2009-09-08 | 2009-09-08 | Brushless DC motor type electric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201942921U CN201507462U (en) | 2009-09-08 | 2009-09-08 | Brushless DC motor type electric fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201507462U true CN201507462U (en) | 2010-06-16 |
Family
ID=42468589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201942921U Expired - Fee Related CN201507462U (en) | 2009-09-08 | 2009-09-08 | Brushless DC motor type electric fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201507462U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619768A (en) * | 2011-12-26 | 2012-08-01 | 格力电器（中山）小家电制造有限公司 | Direct-current brushless electric fan and control method thereof |
| CN103701291A (en) * | 2013-12-27 | 2014-04-02 | 富阳新马工具有限公司 | Alternating-current input brushless direct-current motor for fan |
-
2009
- 2009-09-08 CN CN2009201942921U patent/CN201507462U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619768A (en) * | 2011-12-26 | 2012-08-01 | 格力电器（中山）小家电制造有限公司 | Direct-current brushless electric fan and control method thereof |
| CN103701291A (en) * | 2013-12-27 | 2014-04-02 | 富阳新马工具有限公司 | Alternating-current input brushless direct-current motor for fan |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2430506B1 (en) | A motor controller and related method | |
| Jovanovic et al. | The use of doubly fed reluctance machines for large pumps and wind turbines | |
| CN101807827B (en) | Digital motor | |
| WO2015154697A1 (en) | Direct current brushless motor system for drain pump, and control method and control device thereof | |
| CN101892998A (en) | Direct-current frequency conversion electric fan | |
| CN201488082U (en) | DC brushless motor type smoke exhaust ventilator | |
| CN201507462U (en) | Brushless DC motor type electric fan | |
| CN102006008A (en) | Variable frequency control system of single/three phase permanent magnet motor of home appliance and control method | |
| CN113241990A (en) | SPIM motor drive circuit and method | |
| CN201263116Y (en) | High-efficiency energy-saving rare-earth permanent magnet direct drive device | |
| Feng et al. | Analysis and comparison of three-phase variable frequency PMSM with single-phase induction motor in household appliances | |
| CN215120636U (en) | SPIM motor drive circuit | |
| CN201515278U (en) | digital motor | |
| CN215120635U (en) | SPIM motor drive circuit | |
| CN215120634U (en) | SPIM motor drive circuit | |
| CN113315447B (en) | SPIM motor drive circuit and method | |
| CN203339920U (en) | Two-phase brushless direct-current motor | |
| CN113315448A (en) | SPIM motor drive circuit and method | |
| CN201140389Y (en) | Frequency conversion electric tool | |
| CN113315446A (en) | SPIM motor drive circuit and method | |
| CN203243267U (en) | Major loop circuit of two-phase direct current brushless temperature control fan | |
| CN113422561A (en) | SPIM motor drive circuit and method | |
| CN103269193A (en) | Major loop circuit of two-phase direct current brushless temperature control fan | |
| CN102664570B (en) | Lampblack absorber | |
| Lu et al. | A new short-time high-overload BLDC driving system based on electronic flywheel and time-division switching control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100616 Termination date: 20180908 |