CN103982452B - Method for starting fan, device and communications equipment - Google Patents
Method for starting fan, device and communications equipment Download PDFInfo
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- CN103982452B CN103982452B CN201410223200.3A CN201410223200A CN103982452B CN 103982452 B CN103982452 B CN 103982452B CN 201410223200 A CN201410223200 A CN 201410223200A CN 103982452 B CN103982452 B CN 103982452B
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Abstract
The embodiment of the present invention provides a kind of method for starting fan, device and communications equipment.The method comprises: determine that fan is inserted in the return air position of described inside communication equipment, wherein, described fan makes described fan rotate backward at the return air that described return air position produces, and rotating backward of described fan makes the motor of described fan inside produce inverse electromotive force; The passive braking of described fan is realized by described inverse electromotive force; Start the described fan of described return air position.The embodiment of the present invention can avoid the return air of inside communication equipment to cause damage to fan.
Description
Technical field
The embodiment of the present invention relates to computer realm, particularly relates to a kind of method for starting fan, device and communications equipment.
Background technique
Along with the configuration of communications equipment improves, the power consumption of communications equipment constantly increases, and the heat of generation gets more and more.In order to realize the heat radiation of communications equipment, the number of fans of inside communication equipment gets more and more.
Increasing along with number of fans, when a fan breaks down, needs to be serviced the operation of replacing, plug fan, now, after this fan is pulled out, because other fan is also in work, then in the position at this fan place, create the return air contrary with air channel.When new fan is inserted this position, due to the existence of return air, the flabellum of new fan can rotate backward, and after fan powers on, counter-rotational flabellum will rotate forward, and now, fan will be caused to damage.
Summary of the invention
The embodiment of the present invention provides a kind of method for starting fan, device and communications equipment, causes damage to avoid the return air of inside communication equipment to fan.
First aspect, the embodiment of the present invention provides a kind of method for starting fan, is applied to communications equipment, comprising:
Determine that fan is inserted in the return air position of described inside communication equipment, wherein, the return air produced in described return air position makes described fan rotate backward, and rotating backward of described fan makes the motor of described fan inside produce inverse electromotive force;
The passive braking of described fan is realized by described inverse electromotive force;
Start the described fan of described return air position.
In conjunction with first aspect, in the first possible implementation of first aspect, the described passive braking being realized described fan by described inverse electromotive force, being comprised:
The full-bridge circuit of the motor of described fan is controlled by described inverse electromotive force, make the switching tube on the full-bridge circuit of described motor according to default sequential conducting or closedown, thus generation current in the wire loop of motor on described motor full-bridge circuit, described electric current produces passive braking force in the magnetic field of described motor, realize the passive braking of described fan, or
The drive circuit of the motor of described fan is driven by described inverse electromotive force, described drive circuit is made to control switching tube on the full-bridge circuit of the motor of described fan according to default sequential conducting or closedown, thus generation current in the wire loop of motor on described motor full-bridge circuit, described electric current produces passive braking force in the magnetic field of described motor, realizes the passive braking of described fan.
In conjunction with the first possible implementation of first aspect or first aspect, in the implementation that the second of first aspect is possible, before the described fan of described startup described return air position, also comprise: to being positioned at described inside communication equipment, the rotating speed of other fan except described fan carries out speed regulating control, to reduce the return air speed of described return air position.
In conjunction with the implementation that the second of first aspect is possible, in the third possible implementation of first aspect, described to being positioned at described inside communication equipment, the rotating speed of other fan except described fan carries out speed regulating control, to reduce the return air speed of described return air position, comprising:
Judge whether the rotating speed of other fan except described fan is less than preset rotation speed;
If not, by the rotational speed decelerates of other fan described to being less than described preset rotation speed, to reduce the return air speed of described return air position;
Wherein, when the rotating speed of other fan described is described preset rotation speed, the current return air speed that other fan described produces in described return air position equals the critical return air speed of damaging described fan.
In conjunction with the third possible implementation of first aspect, in the 4th kind of possible implementation of first aspect, before the described fan of described startup described return air position, also comprise:
When determining that the rotating speed of other fan described is less than described preset rotation speed, timing is carried out to the rotation of other fan described, determine that the rotation time of other fan described is greater than the pre-determined stability time, stablize with wind speed after making the return air reduction of speed of described return air position, thus make the described fan being positioned at described return air position rotate backward speed to reduce.
Second aspect, the embodiment of the present invention provides a kind of starting fan device, is applied to communications equipment, comprises:
Identification module in place, determine that fan is inserted in the return air position of described inside communication equipment, wherein, described fan makes described fan rotate backward at the return air that described return air position produces, and rotating backward of described fan makes the motor of described fan inside produce inverse electromotive force;
Passive brake module, for realizing the passive braking of described fan by described inverse electromotive force;
Return air starts module, for starting the described fan of described return air position.
In conjunction with second aspect, in the first possible implementation of second aspect, described passive brake module specifically for:
The full-bridge circuit of the motor of described fan is controlled by described inverse electromotive force, make the switching tube on the full-bridge circuit of described motor according to default sequential conducting or closedown, thus generation current in the wire loop of motor on described motor full-bridge circuit, described electric current produces passive braking force in the magnetic field of described motor, realize the passive braking of described fan, or
The drive circuit of the motor of described fan is driven by described inverse electromotive force, described drive circuit is made to control switching tube on the full-bridge circuit of the motor of described fan according to default sequential conducting or closedown, thus generation current in the wire loop of motor on described motor full-bridge circuit, described electric current produces passive braking force in the magnetic field of described motor, realizes the passive braking of described fan.
In conjunction with the first possible implementation of second aspect or second aspect, in the implementation that the second of second aspect is possible, also comprise: speed adjusting module, before starting the described fan of described return air position in described return air startup module, to being positioned at described inside communication equipment, the rotating speed of other fan except described fan carries out speed regulating control, to reduce the return air speed of described return air position.
In conjunction with the implementation that the second of second aspect is possible, in the third possible implementation of second aspect, described speed adjusting module specifically for:
Judge whether the rotating speed of other fan except described fan is less than preset rotation speed;
If not, by the rotational speed decelerates of other fan described to being less than described preset rotation speed, to reduce the return air speed of described return air position;
Wherein, when the rotating speed of other fan described is described preset rotation speed, the current return air speed that other fan described produces in described return air position equals the critical return air speed of damaging described fan.
In conjunction with the third possible implementation of second aspect, in the 4th kind of possible implementation of second aspect, described speed adjusting module also for:
Described speed adjusting module also for, start the described fan of described return air position in described startup module before, when determining that the rotating speed of other fan described is less than described preset rotation speed, timing is carried out to the rotation of other fan described, determine that the rotation time of other fan described is greater than the pre-determined stability time, stablize with wind speed after making the return air reduction of speed of described return air position, thus make the described fan being positioned at described return air position rotate backward speed to reduce.
The third aspect, the embodiment of the present invention provides a kind of communications equipment, and described communications equipment comprises:
Fan, electronic component, as second aspect, second aspect the first to the starting fan device as described in the 4th kind of any one possible implementation;
Wherein, described starting fan device, for controlling fan and other fan of the return air position insertion of described inside communication equipment, realizes passive braking with the fan making described return air position insert;
The air channel formed in described fan turns process is for lowering the temperature to described electronic component.
The method for starting fan that the embodiment of the present invention provides, device and communications equipment, the method is by determining that fan is inserted in the return air position of inside communication equipment, wherein, the return air produced in return air position makes fan rotate backward, and rotating backward of fan makes the motor of fan inside produce inverse electromotive force; The passive braking of fan is realized by inverse electromotive force; After fan braking, start the fan of return air position, ensure that the fan of return air position can normally start and not damage.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of method for starting fan embodiment one of the present invention;
Fig. 2 is the schematic flow sheet of method for starting fan example two of the present invention;
Fig. 3 is speed control system structure schematic diagram of the present invention.
Fig. 4 is the structural representation of starting fan device embodiment one of the present invention;
Fig. 5 is the structural representation of starting fan device embodiment two of the present invention;
Fig. 6 is the structural representation of communications device embodiments one of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technological scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the flow chart of method for starting fan embodiment one of the present invention.The method of the present embodiment is applied to communications equipment, and the executive agent of the present embodiment is starting fan device, and this starting fan device can by arbitrary software and/or hardware implementing.As shown in Figure 1, the method for the present embodiment can comprise:
Step 101, determine inside communication equipment return air position insert fan;
Step 102, realized the passive braking of fan by inverse electromotive force;
The fan of step 103, startup return air position.
In specific implementation process, in order to lower the temperature to the device of inside communication equipment, at inside communication equipment, multiple fan will be installed.When one of them fan breaks down, this fault fan is pulled out.Now, create return air in the position of this fault fan, this position residing for fault fan is return air position.
In a step 101, when fan inserts return air position, fan powers on, and now, return air position is carried out to the detection in place of fan, to judge whether the return air position of inside communication equipment inserts fan.It will be understood by those skilled in the art that the mode that the fan in the present embodiment inserts can have various ways, such as, by Fan Box, the insertion of fan frame, etc.For the insertion of other form of fan, the present embodiment is not particularly limited herein.Further, when fan is inserted into return air position, the return air that fan produces in return air position makes fan rotate backward, and rotating backward of fan makes the motor of fan inside produce inverse electromotive force.
In a step 102, the passive braking of fan is realized by this inverse electromotive force.In specific implementation process, the inverse electromotive force produced in return air position by the motor of fan realizes the passive braking of fan, comprises two kinds of possible implementations.
A kind of possible implementation: the full-bridge circuit being controlled the motor of described fan by described inverse electromotive force, make the switching tube on the full-bridge circuit of described motor according to default sequential conducting or closedown, thus generation current in the wire loop of motor on described motor full-bridge circuit, described electric current produces passive braking force in the magnetic field of described motor, realizes the passive braking of described fan.
Another kind of possible implementation, the drive circuit of the motor of described fan is driven by described inverse electromotive force, described drive circuit is made to control switching tube on the full-bridge circuit of the motor of described fan according to default sequential conducting or closedown, thus generation current in the wire loop of motor on described motor full-bridge circuit, described electric current produces passive braking force in the magnetic field of described motor, realizes the passive braking of described fan.
Above-mentioned two kinds of possible implementations, difference is, be a full-bridge circuit for the motor directly being controlled fan by inverse electromotive force, another kind is the drive circuit of the motor by inverse electromotive force drive fan, makes drive circuit control the full-bridge circuit of the motor of fan.In specific implementation process, when fan inside does not comprise drive circuit, or, during the heavier loads of drive circuit, directly controlled the full-bridge circuit of the motor of fan by inverse electromotive force.When fan inside comprises drive circuit, and when the load of drive circuit is lighter, control the drive circuit of the motor of fan by inverse electromotive force, controlled the full-bridge circuit of the motor of fan by drive circuit.
Below in above-mentioned two kinds of implementations, the switching tube on the full-bridge circuit of the motor of control fan is according to default sequential manner conducting or closedown, and the passive braking realizing fan is described in detail.
In specific implementation process, the full-bridge circuit of motor can be that two-phase motor or three phase motor are different according to motor.When motor is two-phase motor, full-bridge circuit comprises four switching tubes and a motor, and when motor is three phase motor, full-bridge circuit comprises six switching tubes and a motor.In the present embodiment, for two-phase motor, be described in detail.
The full-bridge circuit of two-phase motor comprises 4 switching tubes and a motor.Make motor rotation, the pair of switches pipe on necessary conducting diagonal.Then different switching tube closes situation to according to different sequential conductings, and electric current may flow through motor from left to right or from right to left, thus controls the commutation of current of electric, makes motor normal rotation.Such as, in the very first time of default sequential, wherein a switching tube is to conducting, another switching tube is to closedown, and in the second time of default sequential, this switching tube is to closedown, another switching tube conducting, make electric current then flow through motor from right to left from left to right, thus control the commutation of current of electric, make motor normal rotation.In the process of motor normal rotation, generation current in the wire loop in motor, electric current produces Lorentz force in the magnetic field of motor, and this Lorentz force is passive braking force, can stop the rotation of fan, thus realizes the passive braking of fan.
Because fan has achieved passive braking, therefore, in step 103, start the fan of return air position, thus prevent return air to the damage of fan.
The method for starting fan that the embodiment of the present invention provides, by determining that fan is inserted in the return air position of inside communication equipment, wherein, the return air that fan produces in return air position makes fan rotate backward, and rotating backward of fan makes the motor of fan inside produce inverse electromotive force; The passive braking of fan is realized by inverse electromotive force; Start the fan of return air position, not only ensure that the fan of return air position can normally start and not damage, also eliminate the constructional device that inside communication equipment prevents return air, reduce communications equipment noise, save space and the cost of communications equipment.
Fig. 2 is the schematic flow sheet of method for starting fan example two of the present invention.As shown in Figure 2, the method for starting fan that the embodiment of the present invention provides, comprising:
Step 201, determine inside communication equipment return air position insert fan;
Step 202, realized the passive braking of fan by inverse electromotive force;
Step 203, to being positioned at inside communication equipment, the rotating speed of other fan except fan carries out speed regulating control, to reduce the return air speed of return air position;
Step 204, when determining that the rotating speed of other fan is less than preset rotation speed, timing is carried out to the rotation of other fan, determine that the rotation time of other fan is greater than the pre-determined stability time, stablize with wind speed after making the return air reduction of speed of return air position, thus make the fan being positioned at return air position rotate backward speed to reduce;
The fan of step 205, startup return air position.
Step 201 in the present embodiment is similar with the step 101 in Fig. 1 embodiment, and step 202 is similar with the step 102 in Fig. 1 embodiment, and step 205 is similar with the step 103 in Fig. 1 embodiment.The present embodiment repeats no more herein.
It will be understood by those skilled in the art that in the present embodiment, the execution of step 203 and step 204 and the execution of step 202, do not have strict sequential relationship, first can perform step 203 and step 204 yet, then perform step 202.
In specific implementation process, have multiple fan at inside communication equipment, the wind speed size of other fan affects the return air speed of return air position.When the wind speed of other fan reduces, the return air speed of return air position also can reduce, when return air speed reduces, just very little on the impact of the fan just inserted.But, when the wind speed of other fan is larger, the return air speed of return air position is very large, when being realized the passive braking of fan by inverse electromotive force, also cannot stoping the reversion of fan completely, therefore, also needing being positioned at inside communication equipment, the rotating speed of other fan except fan carries out speed regulating control, to reduce the return air speed of return air position.
Therefore, in the present embodiment, the rotating speed of other fan judged except fan is also needed whether to be less than preset rotation speed, if not, by the rotational speed decelerates of other fan to being less than preset rotation speed.Wherein, when the rotating speed of other fan is described preset rotation speed, the current return air speed that other fan described produces in described return air position equals the critical return air speed of damaging described fan.In specific implementation process, measure the critical return air speed of each fan damage, the critical return air speed of fan damage, after test obtains, the performance parameter that can be used as this fan forever uses.It will be understood by those skilled in the art that the size of fan, the differences such as the flabellum number of fan and shape, then the critical return air speed of fan damage is by different.Further, when the rotating speed of other fan is less than preset rotation speed, the return air speed that other fan produces in return air position is less than the critical return air speed of the described fan of damage.It will be appreciated by those skilled in the art that, the return air speed that other fan produces in return air position is not only relevant to the current rotating speed of other fan, also with the number of fans of other fan, fan performance, fan dimension, position of fan, and the position, air channel of inside communication equipment is relevant, namely many factors determines the return air speed of return air position jointly.Therefore, considering the preset rotation speed of other fan, when making the rotating speed of this other fan be preset rotation speed, when the current return air speed that other fan produces in return air position equals the critical return air speed of damaging this fan, also to consider the number of fans of other fan, fan performance, fan dimension, position of fan, and the position, air channel of inside communication equipment.Such as, when other condition is identical, when only number of fans is different, then number of fans is more, then the preset rotation speed of other fan is lower.Therefore, after the experiment of experience limited number of time, this preset rotation speed value can be determined.
The method for starting fan that the present embodiment provides, to being positioned at described inside communication equipment, the rotating speed of other fan except described fan carries out speed regulating control, to reduce the return air speed of described return air position; Start the described fan of described return air position, not only ensure that the fan of return air position can normally start and not damage, the equipment also eliminating inside communication equipment prevents the constructional device of return air, reduces communications equipment noise, saves space and the cost of communications equipment.
Alternatively, after step 203, can carry out step 204.When the rotating speed of other fan is less than preset rotation speed, timing is carried out to the rotation of other fan, determine that the rotation time of other fan is greater than the pre-determined stability time.
When the rotating speed of other fan is less than preset rotation speed, now, although the return air speed of return air position has started to reduce, but also do not stablize, therefore, timing being carried out to the rotation of other fan, when determining that the rotation time of other fan is greater than the pre-determined stability time, just starting the fan of return air position.Now, the return air speed of return air position not only lowers, also highly stable, very little on the impact of fan, and the fan inserted in return air position can not be caused to damage.
Fig. 3 is speed control system structure schematic diagram of the present invention.As shown in Figure 3, its fan 1 is fan, and fan 2, fan 3, fan 4 are other fan.Whether testing module in place is in place for detecting fan, and situation in place is reported speed adjusting module, and fan control module 1 is for monitoring fan 1 i.e. fan, and fan control module 2 is for monitoring other fan.When fan control module 2 monitors the wind speed of other fan, the wind speed of other fan is reported speed adjusting module, determined whether to carry out speed governing to other fan by speed adjusting module, when speed adjusting module determines that other fan needs speed governing, issue speed-regulating instruction to fan control module 2, perform speed-regulating instruction by fan control module 2.It will be understood by those skilled in the art that when fan 1 that is fan normal rotation time, also need to rotate according to certain rotating speed, the rotating speed of fan 1 is handed down to fan control module 1 by speed adjusting module, is regulated and controled by fan control module 1 pair of fan 1.It will be appreciated by those skilled in the art that, the internal structure of above-mentioned speed control system is only schematic, in specific implementation process, such as, the division of described module, is only a kind of logical function and divides, actual can have other dividing mode when realizing, such as multiple module can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.
The embodiment of the present invention is by rotating backward the inverse electromotive force of generation, achieve the passive braking of fan in return air position, not only ensure that the fan of return air position can normally start and not damage, the equipment also eliminating inside communication equipment prevents the constructional device of return air, reduce communications equipment noise, save space and the cost of communications equipment.
To sum up, the present embodiment realizes the passive braking of the fan of return air position by inverse electromotive force, and reduction is except the rotating speed of other fan of the fan of return air position, reduces the return air speed of return air position, the damage of the fan preventing return air position from inserting.
Fig. 4 is the structural representation of starting fan device embodiment one of the present invention.As shown in Figure 4, the starting fan device 40 that the embodiment of the present invention provides comprises: identification module 401 in place, and passive brake module 402 and return air start module 403.
Identification module 401 in place, determine that fan is inserted in the return air position of described inside communication equipment, wherein, described fan makes described fan rotate backward at the return air that described return air position produces, and rotating backward of described fan makes the motor of described fan inside produce inverse electromotive force;
Passive brake module 402, for realizing the passive braking of described fan by described inverse electromotive force;
Return air starts module 403, for starting the described fan of described return air position.
The starting fan device that the embodiment of the present invention provides, can perform embodiment of the method as shown in Figure 1, and it realizes principle and technique effect is similar, repeats no more herein.
Fig. 5 is the structural representation of starting fan device embodiment two of the present invention.The present embodiment realizes on the basis of Fig. 4 embodiment, specific as follows:
Described passive brake module 402 specifically for:
The full-bridge circuit of the motor of described fan is controlled by described inverse electromotive force, make the switching tube on the full-bridge circuit of described motor according to default sequential conducting or closedown, thus generation current in the wire loop of motor on described motor full-bridge circuit, described electric current produces passive braking force in the magnetic field of described motor, realize the passive braking of described fan, or
The drive circuit of the motor of described fan is driven by described inverse electromotive force, described drive circuit is made to control switching tube on the full-bridge circuit of the motor of described fan according to default sequential conducting or closedown, thus generation current in the wire loop of motor on described motor full-bridge circuit, described electric current produces passive braking force in the magnetic field of described motor, realizes the passive braking of described fan.
Alternatively, also comprise: speed adjusting module 404, before starting the described fan of described return air position in described return air startup module, to being positioned at described inside communication equipment, the rotating speed of other fan except described fan carries out speed regulating control, to reduce the return air speed of described return air position.
Alternatively, described speed adjusting module 404 specifically for:
Judge whether the rotating speed of other fan except described fan is less than preset rotation speed;
If not, by the rotational speed decelerates of other fan described to being less than described preset rotation speed, to reduce the return air speed of described return air position;
Wherein, when the rotating speed of other fan described is described preset rotation speed, the current return air speed that other fan described produces in described return air position equals the critical return air speed of damaging described fan.
Alternatively, described speed adjusting module 404 also for:
Start the described fan of described return air position in described startup module before, when determining that the rotating speed of other fan described is less than described preset rotation speed, timing is carried out to the rotation of other fan described, determine that the rotation time of other fan described is greater than the pre-determined stability time, stablize with wind speed after making the return air reduction of speed of described return air position, thus make the described fan being positioned at described return air position rotate backward speed to reduce.
The starting fan device that the embodiment of the present invention provides, can perform said method embodiment, and it realizes principle and technique effect is similar, repeats no more herein.
Fig. 6 is the structural representation of communications device embodiments one of the present invention.The communications equipment 60 that the present embodiment provides comprises, fan, in the present embodiment, is not particularly limited the number of fan, herein for convenience of explanation, the number of fan is 3, comprises fan 601, fan 602, fan 603, the fan that its fan 603 inserts for return air position.Communications equipment 60 also comprises electronic component 604, the starting fan device 605 as shown in Fig. 4 or Fig. 5 embodiment.It will be appreciated by those skilled in the art that; electronic component 604 in the present embodiment can represent multiple electronic component; this electronic component can be resistance, electric capacity, inductance, potentiometer, transformer, triode, diode etc.; it will be appreciated by those skilled in the art that; electronic component is the basis of composition electronic product, and the electronic product of various electronic component composition is also in protection scope of the present invention.
In the present embodiment, described starting fan device 605, for controlling fan 603 and other fan, i.e. fan 601 and the fan 602 of the return air position insertion of described inside communication equipment, realizes passive braking with the fan 603 making described return air position insert.Concrete implementation can with reference to Fig. 4 and Fig. 5 embodiment.
The air channel formed in described fan turns process is for lowering the temperature to described electronic component 604.Particularly, when fan 601, when fan 602 and fan 603 rotate, the air channel of formation as shown by the arrows in Figure 6, can lower the temperature to electronic component 604, can normally work to make electronic component 604.It will be understood by those skilled in the art that the air channel in the present embodiment is only schematic, in specific implementation process, different according to the position of each fan, the direction in air channel will change to some extent, and the direction of the present embodiment to air channel is not particularly limited.
It will be appreciated by those skilled in the art that, in specific implementation process, starting fan device 605 in the present embodiment, the identification module in place 401 that its inside comprises can in the outside setting separately of each fan, passive brake module 402 and return air start module 403 not only can in the outside setting separately of each fan, can also be integrated in each fan inner, namely each fan inside includes passive brake module 402 and return air startup module 403.
One of ordinary skill in the art will appreciate that: all or part of step realizing above-mentioned each embodiment of the method can have been come by the hardware that programming instruction is relevant.Aforesaid program can be stored in a computer read/write memory medium.This program, when performing, performs the step comprising above-mentioned each embodiment of the method; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above each embodiment is only in order to illustrate technological scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technological scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristics; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technological scheme.
Claims (9)
1. a method for starting fan, is characterized in that, is applied to communications equipment, comprising:
Determine that fan is inserted in the return air position of described inside communication equipment, wherein, the return air produced in described return air position makes described fan rotate backward, and rotating backward of described fan makes the motor of described fan inside produce inverse electromotive force;
The passive braking of described fan is realized by described inverse electromotive force;
Start the described fan of described return air position;
The described passive braking being realized described fan by described inverse electromotive force, being comprised:
The full-bridge circuit of the motor of described fan is controlled by described inverse electromotive force, make the switching tube on the full-bridge circuit of described motor according to default sequential conducting or closedown, thus generation current in the wire loop of motor on described motor full-bridge circuit, described electric current produces passive braking force in the magnetic field of described motor, realize the passive braking of described fan, or
The drive circuit of the motor of described fan is driven by described inverse electromotive force, described drive circuit is made to control switching tube on the full-bridge circuit of the motor of described fan according to default sequential conducting or closedown, thus generation current in the wire loop of motor on described motor full-bridge circuit, described electric current produces passive braking force in the magnetic field of described motor, realizes the passive braking of described fan.
2. method according to claim 1, is characterized in that, before the described fan of described startup described return air position, also comprises:
To being positioned at described inside communication equipment, the rotating speed of other fan except described fan carries out speed regulating control, to reduce the return air speed of described return air position.
3. method according to claim 2, is characterized in that, described to being positioned at described inside communication equipment, the rotating speed of other fan except described fan carries out speed regulating control, to reduce the return air speed of described return air position, comprising:
Judge whether the rotating speed of other fan except described fan is less than preset rotation speed;
If not, by the rotational speed decelerates of other fan described to being less than described preset rotation speed, to reduce the return air speed of described return air position;
Wherein, when the rotating speed of other fan described is described preset rotation speed, the current return air speed that other fan described produces in described return air position equals the critical return air speed of damaging described fan.
4. method according to claim 3, is characterized in that, before the described fan of described startup described return air position, also comprises:
When determining that the rotating speed of other fan described is less than described preset rotation speed, timing is carried out to the rotation of other fan described, determine that the rotation time of other fan described is greater than the pre-determined stability time, stablize with wind speed after making the return air reduction of speed of described return air position, thus make the described fan being positioned at described return air position rotate backward speed to reduce.
5. a starting fan device, is characterized in that, is applied to communications equipment, comprising:
Identification module in place, determine that fan is inserted in the return air position of described inside communication equipment, wherein, described fan makes described fan rotate backward at the return air that described return air position produces, and rotating backward of described fan makes the motor of described fan inside produce inverse electromotive force;
Passive brake module, for realizing the passive braking of described fan by described inverse electromotive force;
Return air starts module, for starting the described fan of described return air position;
Described passive brake module specifically for:
The full-bridge circuit of the motor of described fan is controlled by described inverse electromotive force, make the switching tube on the full-bridge circuit of described motor according to default sequential conducting or closedown, thus generation current in the wire loop of motor on described motor full-bridge circuit, described electric current produces passive braking force in the magnetic field of described motor, realize the passive braking of described fan, or
The drive circuit of the motor of described fan is driven by described inverse electromotive force, described drive circuit is made to control switching tube on the full-bridge circuit of the motor of described fan according to default sequential conducting or closedown, thus generation current in the wire loop of motor on described motor full-bridge circuit, described electric current produces passive braking force in the magnetic field of described motor, realizes the passive braking of described fan.
6. device according to claim 5, it is characterized in that, also comprise: speed adjusting module, before starting the described fan of described return air position in described return air startup module, to being positioned at described inside communication equipment, the rotating speed of other fan except described fan carries out speed regulating control, to reduce the return air speed of described return air position.
7. device according to claim 6, is characterized in that, described speed adjusting module specifically for:
Judge whether the rotating speed of other fan except described fan is less than preset rotation speed;
If not, by the rotational speed decelerates of other fan described to being less than described preset rotation speed, to reduce the return air speed of described return air position;
Wherein, when the rotating speed of other fan described is described preset rotation speed, the current return air speed that other fan described produces in described return air position equals the critical return air speed of damaging described fan.
8. device according to claim 7, it is characterized in that, described speed adjusting module also for, start the described fan of described return air position in described startup module before, when determining that the rotating speed of other fan described is less than described preset rotation speed, timing is carried out to the rotation of other fan described, determine that the rotation time of other fan described is greater than the pre-determined stability time, stablize with wind speed after making the return air reduction of speed of described return air position, thus make the described fan being positioned at described return air position rotate backward speed to reduce.
9. a communications equipment, is characterized in that, described communications equipment comprises:
Fan, electronic component, the starting fan device as described in any one of claim 5 to 8;
Wherein, described starting fan device, for controlling fan and other fan of the return air position insertion of described inside communication equipment, realizes passive braking with the fan making described return air position insert;
The air channel formed in described fan turns process is for lowering the temperature to described electronic component.
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| CN106151082B (en) * | 2015-03-27 | 2017-11-24 | 深圳兴奇宏科技有限公司 | The method for preventing starting fan operating from burning |
| CN107084513A (en) * | 2017-06-21 | 2017-08-22 | 广东美的暖通设备有限公司 | The blower fan of windy air conditioner starts control method, device and air-conditioning |
| CN113074132B (en) * | 2021-03-25 | 2022-11-18 | 山东英信计算机技术有限公司 | Regulation and control method and system for preventing hot plug fan from reversing and computer storage medium |
| CN113323903B (en) * | 2021-06-18 | 2023-08-08 | 广东湾区智能终端工业设计研究院有限公司 | Method and device for hot start of fan |
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