CN102022366A - Outer rotor embedded type automatic-control constant-speed direct current brushless centrifugal fan and constant-speed method - Google Patents
Outer rotor embedded type automatic-control constant-speed direct current brushless centrifugal fan and constant-speed method Download PDFInfo
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- CN102022366A CN102022366A CN2010106048896A CN201010604889A CN102022366A CN 102022366 A CN102022366 A CN 102022366A CN 2010106048896 A CN2010106048896 A CN 2010106048896A CN 201010604889 A CN201010604889 A CN 201010604889A CN 102022366 A CN102022366 A CN 102022366A
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- centrifugal blower
- control constant
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Abstract
The invention relates to an outer rotor embedded type automatic-control constant-speed direct current brushless centrifugal fan and a constant-speed method, which can perform automatic constant-speed control for the rotate speed of an outer rotor embedded type centrifugal fan. The outer rotor embedded type automatic-control constant-speed direct current brushless centrifugal fan comprises a centrifugal fan and a direct current converter, wherein an automatic-control constant-speed detection circuit is arranged in the centrifugal fan, a detecting head in an F/V converter in the automatic-control constant-speed detection circuit is arranged at an outer rotor side and is used for detecting the rotating speed of the outer rotor, and the output end of an inverted adding device in the automatic-control constant-speed detection circuit is connected with the power input end of the centrifugal fan and is used for adjusting the rotating speed of the centrifugal fan. The invention has the advantages of low cost for customers to development subsequent product, high accuracy on rotating speed control, low fan manufacturing cost, long motor service life and high safety factor and is simple for operation.
Description
Technical field
The present invention relates to a kind of embedded automatic control constant speed of the external rotor brush DC centrifugal blower and the constant speed method of the automatic constant speed control of the rotating speed of the embedded centrifugal blower of external rotor can the genus external rotor centrifugal blower and make the field.
Background technique
At present, the external rotor centrifugal blower is on structural design, and the regulator of its rotating speed is arranged on outside the centrifugal blower shell, and needs to regulate manually, not only uses cumbersomely, and the rotating speed control accuracy is low, and blower fan manufacture cost height, and safety coefficient is low.
Summary of the invention
Purpose of design: avoid the deficiency in the background technique, design a kind of embedded automatic control constant speed of external rotor brush DC centrifugal blower and the constant speed method that the automatic constant speed of the rotating speed of the embedded centrifugal blower of external rotor can be controlled.
Design proposal: in order to realize above-mentioned purpose of design.The design of automatic control constant speed testing circuit in blower fan is a major technique feature of the present invention.The purpose of doing like this is: because automatic control constant speed testing circuit is made of F/V transducer, phase inverter, anti-phase adder and reference rotation speed control potential circuit, the F/V transducer can detect constantly to the rotating speed of external rotor, detected commentaries on classics band can be converted constantly to voltage signal again and by phase inverter to anti-phase adder, anti-phase adder compares according to the voltage signal and the centrifugal blower rotating speed reference rotation speed control voltage of gained, thereby realize auto-control, realize that the constant speed of centrifugal blower rotating speed is rotated the centrifugal blower power supply voltage.
Technological scheme 1: the embedded automatic control constant speed of external rotor brush DC centrifugal blower, it comprises centrifugal blower and direct current transducer, described in blower fan automatic control constant speed testing circuit, in the automatic control constant speed testing circuit in the F/V transducer detecting head be positioned at external rotor one side and be used to detect the rotating speed of external rotor, the output termination centrifugal blower power input of anti-phase adder and be used to regulate the rotating speed of centrifugal blower in the automatic control constant speed testing circuit.
Technological scheme 2: the constant speed method of the embedded automatic control constant speed of external rotor brush DC centrifugal blower, F/V transducer in the centrifugal blower in the automatic control constant speed testing circuit converts detected external rotor speed-frequency to magnitude of voltage and inputs to the input end of phase inverter, after handling, phase inverter inputs to the input end of anti-phase adder by the output terminal of phase inverter, oppositely adder compares magnitude of voltage and reference rotation speed control voltage, when magnitude of voltage is controlled voltage less than reference rotation speed, anti-phase adder is controlled the input voltage of voltage-regulation centrifugal blower to the magnitude of voltage that sets by accurate rotating speed, when magnitude of voltage is controlled voltage greater than reference rotation speed, anti-phase adder then plays the effect of dividing potential drop locking to the input voltage of centrifugal blower, the input voltage of centrifugal blower is in the scope of the magnitude of voltage that sets all the time.
The present invention compares with background technique, and the one, the development cost of client's subsequent product is low; Two are to use simply; The 3rd, rotating speed control accuracy height; The 4th, the blower fan low cost of manufacture; The 5th, the motor long service life; The 6th, the safety coefficient height.
Description of drawings
Fig. 1 is the block diagram of the embedded automatic control constant speed of external rotor brush DC centrifugal blower.
Embodiment
Embodiment 1: with reference to accompanying drawing 1.The embedded automatic control constant speed of a kind of external rotor brush DC centrifugal blower, it comprises centrifugal blower and direct current transducer, described in blower fan automatic control constant speed testing circuit, in the automatic control constant speed testing circuit in the F/V transducer detecting head be positioned at external rotor one side and be used to detect the rotating speed of external rotor, the output termination centrifugal blower power input of anti-phase adder and be used to regulate the rotating speed of centrifugal blower in the automatic control constant speed testing circuit.Described automatic control constant speed testing circuit is made of F/V transducer, phase inverter, anti-phase adder and reference rotation speed control potential circuit, F/V converter voltage signal output part connects the voltage signal input end of phase inverter, the phase inverter voltage signal output end connects the voltage signal input end of anti-phase adder, the voltage signal output end of anti-phase adder connects the voltage input end of centrifugal blower, and the voltage output end of reference rotation speed control potential circuit connects the voltage input end of anti-phase adder.Described reference rotation speed control potential circuit is by resistance R
1And R
2Constitute R
1One termination VCC, R
1Another termination R
2The input end of one end and anti-phase adder, R
2Another termination.
Embodiment 2: on embodiment 1 basis, the constant speed method of the embedded automatic control constant speed of a kind of external rotor brush DC centrifugal blower, F/V transducer in the centrifugal blower in the automatic control constant speed testing circuit converts detected external rotor speed-frequency to magnitude of voltage and inputs to the input end of phase inverter, after handling, phase inverter inputs to the input end of anti-phase adder by the output terminal of phase inverter, oppositely adder compares magnitude of voltage and reference rotation speed control voltage, when magnitude of voltage is controlled voltage less than reference rotation speed, anti-phase adder is controlled the input voltage of voltage-regulation centrifugal blower to the magnitude of voltage that sets by accurate rotating speed, when magnitude of voltage is controlled voltage greater than reference rotation speed, anti-phase adder then plays the effect of dividing potential drop locking to the input voltage of centrifugal blower, the input voltage of centrifugal blower is in the scope of the magnitude of voltage that sets all the time.
What need understand is: though the foregoing description is to the present invention's detailed text description of contrasting; but these text descriptions; just the simple text of mentality of designing of the present invention is described; rather than to the restriction of invention mentality of designing; any combination, increase or modification that does not exceed mentality of designing of the present invention all falls within the scope of protection of the present invention.
Claims (4)
1. the embedded automatic control constant speed of external rotor brush DC centrifugal blower, it comprises centrifugal blower and direct current transducer, it is characterized in that: described in blower fan automatic control constant speed testing circuit, in the automatic control constant speed testing circuit in the F/V transducer detecting head be positioned at external rotor one side and be used to detect the rotating speed of external rotor, the output termination centrifugal blower power input of anti-phase adder and be used to regulate the rotating speed of centrifugal blower in the automatic control constant speed testing circuit.
2. the embedded automatic control constant speed of external rotor according to claim 1 brush DC centrifugal blower, it is characterized in that: described automatic control constant speed testing circuit is by the F/V transducer, phase inverter, anti-phase adder and reference rotation speed control potential circuit constitute, F/V converter voltage signal output part connects the voltage signal input end of phase inverter, the phase inverter voltage signal output end connects the voltage signal input end of anti-phase adder, the voltage signal output end of anti-phase adder connects the voltage input end of centrifugal blower, and the voltage output end of reference rotation speed control potential circuit connects the voltage input end of anti-phase adder.
3. the embedded automatic control constant speed of external rotor according to claim 1 brush DC centrifugal blower is characterized in that: described reference rotation speed control potential circuit is by resistance R
1And R
2Constitute R
1One termination VCC, R
1Another termination R
2The input end of one end and anti-phase adder, R
2Another termination.
4. the constant speed method of the embedded automatic control constant speed of an external rotor brush DC centrifugal blower, it is characterized in that: the F/V transducer in the centrifugal blower in the automatic control constant speed testing circuit converts detected external rotor speed-frequency to magnitude of voltage and inputs to the input end of phase inverter, after handling, phase inverter inputs to the input end of anti-phase adder by the output terminal of phase inverter, oppositely adder compares magnitude of voltage and reference rotation speed control voltage, when magnitude of voltage is controlled voltage less than reference rotation speed, anti-phase adder is controlled the input voltage of voltage-regulation centrifugal blower to the magnitude of voltage that sets by accurate rotating speed, when magnitude of voltage is controlled voltage greater than reference rotation speed, anti-phase adder then plays the effect of dividing potential drop locking to the input voltage of centrifugal blower, the input voltage of centrifugal blower is in the scope of the magnitude of voltage that sets all the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106048896A CN102022366A (en) | 2010-12-25 | 2010-12-25 | Outer rotor embedded type automatic-control constant-speed direct current brushless centrifugal fan and constant-speed method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106048896A CN102022366A (en) | 2010-12-25 | 2010-12-25 | Outer rotor embedded type automatic-control constant-speed direct current brushless centrifugal fan and constant-speed method |
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| Publication Number | Publication Date |
|---|---|
| CN102022366A true CN102022366A (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106048896A Pending CN102022366A (en) | 2010-12-25 | 2010-12-25 | Outer rotor embedded type automatic-control constant-speed direct current brushless centrifugal fan and constant-speed method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2714449B2 (en) * | 1989-08-08 | 1998-02-16 | 株式会社日立製作所 | Variable speed pump system |
| WO2004030200A1 (en) * | 2002-09-30 | 2004-04-08 | Sanyo Denki Co.,Ltd. | Brushless dc fan motor |
| WO2007102226A1 (en) * | 2006-03-09 | 2007-09-13 | Fujitsu Limited | Fan apparatus, electronic apparatus, and control method for them |
| CN101408186A (en) * | 2008-11-21 | 2009-04-15 | 中兴通讯股份有限公司 | Fan control device and method as well as multiple-fan control device and method |
| CN201224669Y (en) * | 2008-06-06 | 2009-04-22 | 招商局重工(深圳)有限公司 | Crane speed regulating device for conventional control |
| CN201568331U (en) * | 2009-11-02 | 2010-09-01 | 杭州微光电子股份有限公司 | Electronically regulated external rotor axial-flow fan |
| CN201902356U (en) * | 2010-12-25 | 2011-07-20 | 杭州顿力电器有限公司 | Outer rotor embedded type automatic control constant-speed brushless direct current centrifugal fan |
-
2010
- 2010-12-25 CN CN2010106048896A patent/CN102022366A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2714449B2 (en) * | 1989-08-08 | 1998-02-16 | 株式会社日立製作所 | Variable speed pump system |
| WO2004030200A1 (en) * | 2002-09-30 | 2004-04-08 | Sanyo Denki Co.,Ltd. | Brushless dc fan motor |
| WO2007102226A1 (en) * | 2006-03-09 | 2007-09-13 | Fujitsu Limited | Fan apparatus, electronic apparatus, and control method for them |
| CN201224669Y (en) * | 2008-06-06 | 2009-04-22 | 招商局重工(深圳)有限公司 | Crane speed regulating device for conventional control |
| CN101408186A (en) * | 2008-11-21 | 2009-04-15 | 中兴通讯股份有限公司 | Fan control device and method as well as multiple-fan control device and method |
| CN201568331U (en) * | 2009-11-02 | 2010-09-01 | 杭州微光电子股份有限公司 | Electronically regulated external rotor axial-flow fan |
| CN201902356U (en) * | 2010-12-25 | 2011-07-20 | 杭州顿力电器有限公司 | Outer rotor embedded type automatic control constant-speed brushless direct current centrifugal fan |
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Application publication date: 20110420 |