CN105864073A - Energy saving and muting cross-flow fan - Google Patents
Energy saving and muting cross-flow fan Download PDFInfo
- Publication number
- CN105864073A CN105864073A CN201610378132.7A CN201610378132A CN105864073A CN 105864073 A CN105864073 A CN 105864073A CN 201610378132 A CN201610378132 A CN 201610378132A CN 105864073 A CN105864073 A CN 105864073A
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- Prior art keywords
- unit
- flow fan
- fan
- angle
- pulse width
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
- H02P27/085—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation wherein the PWM mode is adapted on the running conditions of the motor, e.g. the switching frequency
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2200/00—Mathematical features
- F05D2200/20—Special functions
- F05D2200/26—Special functions trigonometric
- F05D2200/261—Sine
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention is suitable for the technical field of ventilation equipment and provides an energy saving and muting cross-flow fan. The cross-flow fan comprises an impeller cover, a fan and a drive motor, wherein the impeller cover is provided with a wind cavity; the fan is housed in the wind cavity; the drive motor is installed on the impeller cover to drive the fan to rotate in the wind cavity, generates sine waves and controls the fan. The energy saving and muting cross-flow fan provided by the embodiment of the invention has the technical effects that the fan is controlled by utilizing the drive motor and the drive motor generates sine waves and controls the fan, so that the current of the fan continuously changes in a sinusoidal manner and commutation current jump is avoided, thus reducing noises generated in the operation process of the drive motor; therefore the whole energy saving and muting cross-flow fan has muting effects and meets the use requirements of people.
Description
Technical field
The invention belongs to ventilation equipment technical field, particularly relate to a kind of energy-saving mute cross flow fan.
Background technology
Filter-type door and window ventilator on existing market or the major function of ventilator of curtain wall, be available to indoor
Through the fresh air filtered, block outdoor noise and insulation simultaneously.
In order to realize above-mentioned functions, on domestic market, the portioned product of filter-type window (curtain wall) ventilator is adopted
With blower fan (also referred to as cross flow fan) as the power source of ventilator.Blower fan is a kind of brush DC (motor)
Blower fan.Owing to the blower fan on domestic market all uses square wave control mode, although this control mode is simple
Single easily realization, but there is torque pulsation and commutation noise problem simultaneously.
Along with growth in the living standard, the higher requirement of people's proposition continuous to product.Due to filter-type window
(curtain wall) ventilator is arranged on the parlor in family, study and bedroom mostly, and in daily life, user is to making an uproar
Sound is the most sensitive, installs the torque pulsation using the ventilator of blower fan of square wave control mode intrinsic and commutation is made an uproar
Sound is that client is unacceptable.
Summary of the invention
It is an object of the invention to provide a kind of energy-saving mute cross flow fan, it is intended to solve prior art is ventilated
The noise problem that device brings because of the blower fan of employing square wave control mode.
The present invention is achieved in that a kind of energy-saving mute cross flow fan, including be provided with wind chamber impeller chimney,
It is contained in the blower fan in described wind chamber and is installed on described impeller chimney to drive described blower fan in described wind chamber
The driving motor of interior rotation, described driving motor produces sinusoidal wave and controls described blower fan.
Further, the sine wave of described driving motor is three-phase sine-wave.
Further, described driving motor includes the motor winding electrically connected with external power source and controls described
Motor winding produces the control module of sinusoidal current signal, and described control module controls the width of described sinusoidal current
Value and phase place control the torque of described driving motor.
Further, the winding quantity of described motor winding is 6,9,12 or 24.
Further, described control module includes receiving the hall signal of described motor winding generation and to reception
Hall signal carry out the Hall filtering sampling unit of automatic filter and sampling, receive described Hall filtering sampling
Unit feedback tachometer value and calculate the speed regulation unit of Sinusoidal Pulse Width Modulation and receive described Hall
The angle value of filtering sampling unit feedback and the sine pulse of the modulation size of described speed regulation unit feedback
Width modulation unit, described Sinusoidal Pulse Width Modulation unit utilizes described modulation size and described angle value
Generate the minimum Sinusoidal Pulse Width Modulation of switching damage and export to described motor winding.
Preferably, the mode of speed regulation of described speed regulation unit uses 0-10V speed governing or uses pulse width
Modulation system speed governing.
Further, described control module also includes being arranged at described Hall filtering sampling unit and described speed
Regulation unit between with the speed computing unit that described tachometer value is calculated and be arranged at described Hall filter
Between ripple sampling unit and described Sinusoidal Pulse Width Modulation unit and receive described speed computing unit calculate
The angle evaluation unit of tachometer value and described angle value, described angle evaluation unit utilizes described tachometer value and changes
Phase information estimates the anglec of rotation of described motor wound rotor.
Further, described control module also includes arranging and above-mentioned angle evaluation unit and described sine pulse
Between width modulation unit and provide the advance angle adjustment unit of leading angle, described angle evaluation unit exports
The leading angle that provides of angle value and described advance angle adjustment unit generate described Sinusoidal Pulse Width Modulation list
The anglec of rotation needed for unit, described motor winding receives this anglec of rotation.
Relative to prior art, the present invention has the technical effect that this energy-saving mute cross flow fan utilizes described driving
Motor controls described blower fan, and described driving motor produces sine wave and controls described blower fan, so that described blower fan
Electric current be sinusoidal consecutive variations, without converting commutating current sudden change, thus reduce in described driving motor operation course
Noise produce so that whole energy-saving mute cross flow fan has muting function, meets the use demand of people.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be to the embodiment of the present invention or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, disclosed below is attached
Figure is only some embodiments of the present invention, for those of ordinary skill in the art, is not paying creation
Property work on the premise of, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structure chart that the embodiment of the present invention provides energy-saving mute cross flow fan；
Fig. 2 is the system block diagram driving motor in Fig. 1；
Fig. 3 is the sectional view of A-A in Fig. 1；
Fig. 4 to Fig. 6 is the sectional view of B-B in Fig. 1.
Description of reference numerals:
| 10 | Impeller chimney | 30 | Drive motor |
| 12 | Wind chamber | 32 | Motor winding |
| 14 | Air inlet | 34 | Control module |
| 15 | Air outlet | 340 | Hall filtering sampling unit |
| 16 | First bracer | 342 | Speed regulation unit |
| 18 | Second bracer | 344 | Sinusoidal Pulse Width Modulation unit |
| 20 | Blower fan | 345 | Speed computing unit |
| 346 | Angle evaluation unit | ||
| 348 | Advance angle adjustment unit |
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, wherein certainly
Begin to same or similar label eventually represent same or similar element or there is the unit of same or like function
Part.The embodiment described below with reference to accompanying drawing is exemplary, it is intended to be used for explaining the present invention, and not
It is understood that as limitation of the present invention.
In describing the invention, it is to be understood that term " length ", " width ", " on ",
D score, "front", "rear", "left", "right", " vertically ", " level ", " top ",
Orientation or the position relationship of the instruction such as " end " " interior ", " outward " are based on orientation shown in the drawings or position
Relation, be for only for ease of describe the present invention and simplify describe rather than instruction or hint indication device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this
Bright restriction.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or dark
Show relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ",
The feature of " second " can express or implicitly include one or more this feature.The present invention's
In description, " multiple " are meant that two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " even
Connect ", the term such as " fixing " should be interpreted broadly, connect for example, it may be fixing, it is also possible to be removable
Unload connection, or integral；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, also
Can be indirectly connected to by intermediary, can be connection or the phase interaction of two elements of two element internals
By relation.For the ordinary skill in the art, can understand that above-mentioned term exists as the case may be
Concrete meaning in the present invention.
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example, the present invention is further elaborated.
Refer to Fig. 1 to Fig. 6, the energy-saving mute cross flow fan that the embodiment of the present invention provides includes being provided with wind chamber
Impeller chimney 10, the blower fan 20 being contained in described wind chamber 12 of 12 and be installed on described impeller chimney 10
With the driving motor 30 driving described blower fan 20 to rotate in described wind chamber 12, described driving motor 30 produces
Raw sine wave also controls described blower fan 20.
The described energy-saving mute cross flow fan that the embodiment of the present invention provides utilizes described driving motor 30 to control institute
State blower fan 20, and described driving motor 30 produces the described blower fan 20 of sinusoidal wave control, so that described blower fan 20
Electric current be sinusoidal consecutive variations, without converting commutating current sudden change, thus reduce described driving motor 30 running
In noise produce so that whole energy-saving mute cross flow fan has muting function, meets the use need of people
Ask.
In this embodiment, described impeller chimney 10 includes air inlet and the air outlet communicated with described wind chamber 12,
And first bracer extending and abutting with blower fan 20 in being provided with described wind chamber 12 in described impeller chimney 10
And it is relative with described blower fan 20 to be formed between the described air inlet of connection and air outlet in described wind chamber 12
Second bracer of runner.
Further, the sine wave of described driving motor 30 is three-phase sine-wave.Utilize three-phase sine-wave continuous
Change is to drive described blower fan 20 so that the change of whole converting commutating current is smooth, there is not sudden change, thus significantly
Reduce the noise that described driving motor 30 runs.
Refer to Fig. 1 to Fig. 3, further, described driving motor 30 includes electrically connecting with external power source
Motor winding 32 and control described motor winding 32 and produce the control module 34 of sinusoidal current signal, described
Control module 34 controls the amplitude of described sinusoidal current and phase place to control the torque of described driving motor 30.
Described sinusoidal wave control is by described motor winding 32 is applied certain voltage, makes described motor winding
32 produce sinusoidal current, reach to control described driving motor by the amplitude and phase place controlling described sinusoidal current
The purpose of 30 torques, so that the phase current of described driving motor 30 is sinusoidal and consecutive variations, thus
Greatly reduce the noise that described driving motor 30 runs.Preferably, described sine wave is three-phase sine-wave.
Refer to Fig. 4 to Fig. 6, further, the winding quantity of described motor winding 32 is 6,9
12 or 24, but it is not limited to this.By arranging the motor winding 32 of different winding quantity to meet not
Same technical need.In this embodiment, magnetic pole is that multipole is arranged, such as 4 poles, 6 poles or 8 poles etc.,
But it is not limited to this.
Refer to Fig. 2, further, described control module 34 includes that receiving described motor winding 32 produces
Hall signal and the hall signal received is carried out the Hall filtering sampling unit of automatic filter and sampling
340, receive the tachometer value of described Hall filtering sampling unit 340 feedback and calculate Sinusoidal Pulse Width Modulation
Speed regulation unit 342 and receive described Hall filtering sampling unit 340 feedback angle value and described speed
The Sinusoidal Pulse Width Modulation unit 344 of the modulation size of degree regulation unit 342 feedback, described positive taut pulse
Rushing width modulation unit 344 utilizes described modulation size and described angle value just generating switching damage minimum
String pulse width modulation also exports to described motor winding 32.
The hall signal input that described motor winding 32 produces is carried out certainly to described Hall filtering sampling unit 340
Dynamic filtering and sampling, obtain reliable commutation signal, and this commutation signal is used as estimating described driving motor 30
The angle of rotor and rotating speed；And utilize described speed regulation unit 342 to regulate described Hall filtering sampling unit
The tachometer value of 340 feedbacks sinusoid pulse width modulation needed for the described Sinusoidal Pulse Width Modulation unit 344 of calculating,
Described sinusoid pulse width modulation regulation unit also receives the angle value of described Hall filtering sampling unit 340 feedback,
The minimum Sinusoidal Pulse Width Modulation of switching damage is generated also according to the sinusoid pulse width modulation received and angle value
In output extremely described motor winding 32.
In this embodiment, described speed regulation unit 342 also receives given rotating speed, such as, receive 0-10V
Speed electric, modulates the rotating speed of corresponding described driving motor 30 further according to the magnitude of voltage inputted.It is appreciated that
Ground, the mode of speed regulation of described speed regulation unit 342 uses 0-10V speed governing.
In this embodiment, described speed regulation unit 342 uses pulse width modulation, i.e. input pulse width
Ratio between dutycycle 0-100% of degree modulation, the rate value further according to input duty cycle adjusts correspondence
The rotating speed of described driving motor 30.
Refer to Fig. 2, further, described control module 34 also includes being arranged at described Hall filtering sampling
Calculate single with the speed that described tachometer value is calculated between unit 340 and described speed regulation unit 342
Unit 345 and be arranged at described Hall filtering sampling unit 340 and described Sinusoidal Pulse Width Modulation unit
Between 344 and receive described speed computing unit 345 calculate tachometer value and described angle value angle estimation
Unit 346, described angle evaluation unit 346 utilize motor described in described tachometer value and commutation data-evaluation around
Organize the anglec of rotation of 32 rotors.Utilize described speed computing unit 345 to calculate the rotating speed of commutation signal and to incite somebody to action
Rotating speed output is to described speed regulation unit 342 and described angle evaluation unit 346, described angle pro form bill
Unit 346 is according to the tachometer value received and the angle value of described Hall filtering sampling unit 340 output, to obtain
Export to rotary angle signal to described Sinusoidal Pulse Width Modulation unit 344.
Refer to Fig. 2, further, described control module 34 also includes arranging and above-mentioned angle evaluation unit
Between 346 and described Sinusoidal Pulse Width Modulation unit 344 and the advance angle adjustment unit of leading angle is provided
348, it is super that the angle value of described angle evaluation unit 346 output and described advance angle adjustment unit 348 provide
Front angle generates the anglec of rotation needed for described Sinusoidal Pulse Width Modulation unit 344, described motor winding 32
Receive this anglec of rotation.Advance angle △ is compensated, with described angle by arranging described advance angle adjustment unit 348
The angle value of degree evaluation unit 346 output is synthetically formed the anglec of rotation.So, described sinusoid pulse width modulation is adjusted
Joint unit utilizes modulation and the anglec of rotation to generate switching loss minimum Sinusoidal Pulse Width Modulation, and exports extremely
Inversion unit.
In the various embodiments described above, described energy-saving mute cross flow fan is building doors and windows energy-saving mute cross flow fan
Or the quiet cross flow fan of curtain-wall energy-saving, but it is also not necessarily limited to this.
The blower fan 20 that various embodiments of the present invention provide can be crossflow fan, axial flow blower or centrifugal blower,
But it is not limited to this, it is also possible to be other direct current generators.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Any amendment, equivalent and the improvement etc. made within bright spirit and principle, should be included in the present invention
Protection domain within.
Claims (8)
1. an energy-saving mute cross flow fan, it is characterised in that include being provided with the impeller chimney in wind chamber, being contained in
Blower fan in described wind chamber and be installed on described impeller chimney to drive described blower fan to rotate in described wind chamber
Driving motor, described driving motor produces and sinusoidal wave also controls described blower fan.
2. energy-saving mute cross flow fan as claimed in claim 1, it is characterised in that described driving motor
Sine wave is three-phase sine-wave.
3. energy-saving mute cross flow fan as described in claim 1 or 2, it is characterised in that described driving
Motor includes the motor winding electrically connected with external power source and controls described motor winding generation sinusoidal current letter
Number control module, described control module controls the amplitude of described sinusoidal current and phase place controls described driving
The torque of motor.
4. energy-saving mute cross flow fan as claimed in claim 3, it is characterised in that described motor winding
Winding quantity is 6,9,12 or 24.
5. energy-saving mute cross flow fan as claimed in claim 3, it is characterised in that described control module bag
Include and receive the hall signal of described motor winding generation and the hall signal received is carried out automatic filter and sampling
Hall filtering sampling unit, receive described Hall filtering sampling unit feedback tachometer value and calculate positive taut pulse
Rush the speed regulation unit of width modulated and receive angle value and the institute of described Hall filtering sampling unit feedback
State the Sinusoidal Pulse Width Modulation unit of the modulation size of speed regulation unit feedback, described sine pulse width
Degree modulating unit utilizes described modulation size and described angle value to generate the sine pulse width that switching damage is minimum
Degree modulation also exports to described motor winding.
6. energy-saving mute cross flow fan as claimed in claim 5, it is characterised in that the regulation of described speed is single
The mode of speed regulation of unit uses 0-10V speed governing or uses pulse width modulation speed governing.
7. energy-saving mute cross flow fan as claimed in claim 5, it is characterised in that described control module is also
Including being arranged between described Hall filtering sampling unit and described speed regulation unit so that described tachometer value is entered
Speed computing unit that row calculates and be arranged at described Hall filtering sampling unit and described sinusoid pulse width modulation
Between modulating unit and receive described speed computing unit calculate tachometer value and described angle value angle estimation
Unit, described angle evaluation unit utilizes motor wound rotor described in described tachometer value and commutation data-evaluation
The anglec of rotation.
8. energy-saving mute cross flow fan as claimed in claim 5, it is characterised in that described control module is also
Including arranging between above-mentioned angle evaluation unit and described Sinusoidal Pulse Width Modulation unit and providing advance angle
The advance angle adjustment unit of degree, the angle value of described angle evaluation unit output and described advance angle adjustment unit
The leading angle provided generates the anglec of rotation needed for described Sinusoidal Pulse Width Modulation unit, described motor around
Group receives this anglec of rotation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016103438445 | 2016-05-23 | ||
| CN201610343844 | 2016-05-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105864073A true CN105864073A (en) | 2016-08-17 |
Family
ID=56642983
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620521735.3U Expired - Fee Related CN205779809U (en) | 2016-05-23 | 2016-05-31 | Energy-saving mute cross flow fan |
| CN201610378132.7A Pending CN105864073A (en) | 2016-05-23 | 2016-05-31 | Energy saving and muting cross-flow fan |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620521735.3U Expired - Fee Related CN205779809U (en) | 2016-05-23 | 2016-05-31 | Energy-saving mute cross flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN205779809U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205779809U (en) * | 2016-05-23 | 2016-12-07 | 深圳市悦享电器有限公司 | Energy-saving mute cross flow fan |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224272A (en) * | 1998-12-21 | 1999-07-28 | 成都希望电子研究所 | Quasi-superconductor speed stabilizing system |
| CN1433950A (en) * | 2002-01-24 | 2003-08-06 | 北京航天万源稀土电机应用技术有限公司 | Rareearth permanent-magnet self-synchronous gearless elevator driving control system |
| CN103731076A (en) * | 2014-01-02 | 2014-04-16 | 东南大学 | Electric bicycle control method based on permanent magnet brushless direct current motor |
| CN204830316U (en) * | 2015-06-26 | 2015-12-02 | 深圳市悦享电器有限公司 | Ventilator |
| CN204993150U (en) * | 2015-09-30 | 2016-01-20 | 浙江迈雷科技有限公司 | Air conditioner coil pipe fan drive ware |
| CN205779809U (en) * | 2016-05-23 | 2016-12-07 | 深圳市悦享电器有限公司 | Energy-saving mute cross flow fan |
-
2016
- 2016-05-31 CN CN201620521735.3U patent/CN205779809U/en not_active Expired - Fee Related
- 2016-05-31 CN CN201610378132.7A patent/CN105864073A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224272A (en) * | 1998-12-21 | 1999-07-28 | 成都希望电子研究所 | Quasi-superconductor speed stabilizing system |
| CN1433950A (en) * | 2002-01-24 | 2003-08-06 | 北京航天万源稀土电机应用技术有限公司 | Rareearth permanent-magnet self-synchronous gearless elevator driving control system |
| CN103731076A (en) * | 2014-01-02 | 2014-04-16 | 东南大学 | Electric bicycle control method based on permanent magnet brushless direct current motor |
| CN204830316U (en) * | 2015-06-26 | 2015-12-02 | 深圳市悦享电器有限公司 | Ventilator |
| CN204993150U (en) * | 2015-09-30 | 2016-01-20 | 浙江迈雷科技有限公司 | Air conditioner coil pipe fan drive ware |
| CN205779809U (en) * | 2016-05-23 | 2016-12-07 | 深圳市悦享电器有限公司 | Energy-saving mute cross flow fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN205779809U (en) | 2016-12-07 |
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Application publication date: 20160817 |
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