CN100354530C - Serial fan group, and method for generating match curve of rotate speed - Google Patents
Serial fan group, and method for generating match curve of rotate speed Download PDFInfo
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- CN100354530C CN100354530C CNB2004101016268A CN200410101626A CN100354530C CN 100354530 C CN100354530 C CN 100354530C CN B2004101016268 A CNB2004101016268 A CN B2004101016268A CN 200410101626 A CN200410101626 A CN 200410101626A CN 100354530 C CN100354530 C CN 100354530C
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- fan
- rotating speed
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- control module
- match curve
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Abstract
The present invention relates to a serial fan group which comprises a rotary speed control module, a first fan and a second fan, wherein the rotary speed control module receives a power supply signal and outputs a rotary speed driving signal corresponding to the power supply signal according to the curvilinear relation of rotary speed matching; the first fan is connected with the rotary speed control module, receives the drive of the power supply signal and operates in the corresponding rotary speed; the second fan is connected with the control module, receives the rotary speed driving signal and operates in the corresponding rotary speed. In the whole operating range, the serial fan group of the present invention can control the rotary speed to be in a best matching state and solves the problem that the rotary speed of the existing serial fan group can not carry out rotary speed matching control with the change of input voltage.
Description
Technical field
The present invention relates to a kind ofly, particularly relate to a kind of serial fan group and rotating speed method for generating match curve thereof that passes through rotating speed match curve relation running relevant for fan group and controlling method thereof.
Background technique
More and more faster and circuit production the dwindling gradually down along with the execution speed of central processing unit (CPU) in unit area, information processor need be used better sink, improve the stability of System Operation, and the serial fan group system has good radiating efficiency, so often be used in the information processor that needs high cooling efficiency.
And the serial fan group be with before and after two fans near arrangement, and has different each other turning to (when clockwise rotating, another then is counterclockwise), thereby make discharge quantity of fan, blast increase, and fan running efficient is also better.
In general, because the serial fan group system receives identical input voltage, so the serial fan group system is when doing rotating speed control, can only adjust the input voltage size of two fans simultaneously, control the rotating speed of two fans, such way causes the serial fan group only when high operation voltage, could make the coupling of optimum speed, but between the scope of minimum operation voltage and high operation voltage the time, the rotating speed coupling and the running efficiency of serial fan group are often not ideal.
And because the rotating speed of serial fan group need cooperate a specific rotation speeds than running (because of turning to the different rotating speed that makes the fan group relation that can interact), and this rotating speed is compared each rotating speed operating point and is not quite similar, the control mode of therefore general serial fan group can't make the efficient of serial fan group maintain best running state.
Therefore, how in whole district's operating range of serial fan group, to do the control of rotating speed coupling, become one of researcher's problem to be solved.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of serial fan group and rotating speed method for generating match curve thereof, utilize and obtain serial fan group rotating speed match curve relation in advance, and make the serial fan group by the running of rotating speed match curve relation, to solve the rotating speed control problem of serial fan group in whole district's operating range.
To achieve these goals, the invention provides a kind of serial fan group, its characteristics are, include: a rotational speed control module, receive a power supply signal, and according to rotating speed match curve relation, and output is to rotating speed drive signal that should power supply signal; One first fan is connected with this rotational speed control module, receives this power supply signal and drives, with the rotating speed running of a correspondence; And one second fan, be connected with this rotational speed control module, receive this rotating speed drive signal, with the rotating speed running of a correspondence.
Above-mentioned serial fan group, its characteristics be, this rotating speed match curve closes be this first fan with this second fan when operating best blast and the rotating speed corresponding relation of flow.
Above-mentioned serial fan group, its characteristics are that this rotational speed control module also receives the tachometer value of this first fan, with to concerning by the rotating speed match curve, export this rotating speed drive signal.
Above-mentioned serial fan group, its characteristics be, this first fan and this second fan are one to have the fan of multiple rotating speed.
The present invention also provides a kind of serial fan group, and its characteristics are, include: a rotational speed control module, receive a power supply signal, and according to rotating speed match curve relation, and output is to first and second rotating speed drive signal that should power supply signal; One first fan receives this first rotating speed drive signal, with the rotating speed running of a correspondence; And one second fan, receive this second rotating speed drive signal, with the rotating speed running of a correspondence.
Above-mentioned serial fan group, its characteristics be, this rotating speed match curve closes be this first fan with this second fan when operating best blast and the rotating speed corresponding relation of flow.
Above-mentioned serial fan group, its characteristics be, this first fan and this second fan are one to have the fan of multiple rotating speed.
The present invention also provides a kind of rotating speed method for generating match curve of serial fan group, and its characteristics are that this serial fan group is made up of one first fan and one second fan, and its step includes: set this first with many groups tachometer value of this second fan; Make this serial fan group according to the running of many group tachometer values, to obtain a plurality of blast and flow curve; Decision is this blast and the pairing local optimum value of flow curve respectively; And utilize this local optimum value correspondence respectively this first with this second rotation speed of the fan value, draw out the rotating speed match curve of this serial fan.
Above-mentioned rotating speed method for generating match curve, its characteristics be, organize tachometer value is benchmark with the tachometer value of this first fan more, and the tachometer value scope of adjusting this second fan obtains.
Above-mentioned rotating speed method for generating match curve, its characteristics be, organize tachometer value is benchmark with the tachometer value of this second fan more, and the tachometer value scope of adjusting this first fan obtains.
Above-mentioned rotating speed method for generating match curve, its characteristics be, this first fan and this second fan are one to have the fan of multiple rotating speed.
Effect of the present invention is the serial fan group in whole district's operating range, can both control rotating speed at the optimum Match state, and the rotating speed that solves the serial fan group can't carry out the problem that the rotating speed coupling is controlled along with the variation of input voltage.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Figure 1A is the system block diagrams of first embodiment of the invention;
Figure 1B is the system block diagrams of second embodiment of the invention;
Fig. 2 is a flow chart of steps of the present invention;
Fig. 3 is the setting tachometer value table of serial fan group of the present invention;
Fig. 4 is blast and flow (P-Q) curve synoptic diagram among the present invention; And
Fig. 5 is the rotating speed match curve schematic representation among the present invention.
Wherein, reference character:
The 10-rotational speed control module
20-serial fan group, 21-first fan
22-second fan, 40-local optimum value
It is benchmark and the tachometer value that changes the second rotation speed of the fan scope with first rotation speed of the fan that step 100-sets many groups
Step 101-makes the serial fan group set the running of running tachometer value by many groups, to obtain a plurality of blast and flow curve
Step 102-determines the local optimum value of its blast and flow curve
Step 103-utilizes first and second rotation speed of the fan value of each local optimum value correspondence, draws out the rotating speed match curve of serial fan group
Embodiment
Please refer to Figure 1A, the system block diagrams for first embodiment of the invention includes: rotational speed control module 10, first fan 21 and second fan 22.
Rotational speed control module 10, characteristic circuit with rotating speed match curve relation, in order to receive power supply signal, and according to the rotating speed match curve of characteristic circuit relation, the rotating speed drive signal that output is corresponding, so that first fan 21 and second fan 22 operate with rotating speed match curve relation, wherein rotational speed control module 10 can be arranged on fan or the host board (not shown).
So, when power supply signal changes, the rotating speed of first fan 21 changes and changes along with power supply signal, and second fan 22 receives the rotating speed drive signal of rotational speed control module 10 outputs, to produce corresponding rotating speed, this makes the rotating speed of first fan 21 and second fan 22, is keeping the corresponding relation running according to the rotating speed match curve, wherein rotational speed control module 10 can design with first fan 21 or with second fan 22 and connect, and it does not influence serial fan group 20 rotating speed control relation.
In addition, when the number of fans of serial fan group 20 for surpassing two when above, rotational speed control module 10 is done corresponding design according to number of fans, make fan of each rotational speed control module 10 corresponding control, thereby serial fan group 20 is all operated with best blast (Air Pressure) and flow (AirFlow) relation in whole district's operating range.
Please refer to Figure 1B, the system block diagrams for second embodiment of the invention includes: rotational speed control module 10, first fan 21 and second fan 22.
Second embodiment and first embodiment's difference is: rotational speed control module 10 does not need by feedback controling mode serial fan group 20 to be controlled, promptly produce first fan, 21 drive signals and second fan, 22 drive signals respectively by rotational speed control module 10, so that first fan 21 and second fan 22 turn round according to the rotating speed match curve, its partial circuit operating principle no longer illustrates at this as first embodiment.
Please refer to Fig. 2, for rotating speed match curve of the present invention produces flow chart of steps, at first, step 100 is set many groups tachometer value to be measured, promptly the tachometer value with first fan is a benchmark, adjust the tachometer value scope of second fan, set tachometer values, or be benchmark with the tachometer value of second fan to obtain many groups, adjust the tachometer value scope of first fan, to obtain many group tachometer values; Step 101 makes the serial fan group set the tachometer value running according to many groups, to obtain a plurality of blast and flow curve.
Please refer to Fig. 3, be the setting tachometer value table of serial fan group of the present invention, at first, fix the rotating speed of first fan 21, and adjust second fan, 22 rotating speeds, when first fan, 21 tachometer values are set at 1000 commentaries on classics, adjust second fan, 22 rotating speeds respectively and forward 1200 commentaries on classics to from 800, to produce 5 groups of tachometer values (, explain, and non-limiting 5 groups of tachometer values) with 5 groups of tachometer values at this, then, do the running test with these 5 groups of tachometer values, and obtain corresponding 5 blast and flow (P-Q) curve, as shown in Figure 4.
Then, according to fan operating state demand (example, the high rotating speed or the slow-speed of revolution), select required blast and flow (P-Q) curve, and determine local optimum value 40 in this curve, again according to the local optimum value 40 that determines, obtain pairing fan revolution value, so circulation, elder generation changes the setting tachometer value of serial fan group and tests, just can obtain the local optimum value of serial fan group in region-wide operating range, draw out a coupling speed curves with the tachometer value of each local optimum value correspondence again, as shown in Figure 5, last, export the drive signal of first fan 21 and second fan 22 by rotational speed control module 10 according to the rotating speed match curve, so that the serial fan group is with the coupling rotation speed operation.
Please refer to Fig. 5, be rotating speed match curve schematic representation of the present invention, and the rotating speed match curve is formed by the pairing tachometer value drafting of each the local optimum value that obtains Fig. 4, transverse axis is first fan, 21 rotating speeds, the longitudinal axis is second fan, 22 rotating speeds, when first fan, 21 rotating speeds were rotating speed 1, corresponding characteristic curve can find second fan 22 to be rotating speed 2, and rotating speed 1 and rotating speed 2 have the performance of best blast and flow; When first fan, 21 rotating speeds rise to rotating speed 3, corresponding curve can find second fan, 22 rotating speeds to rise to rotating speed 4, and rotating speed 3 and rotating speed 4 have the performance of best blast and flow, this curve corresponding relation, utilize method of trial and error to find out the rotating speed matching relationship of first fan 21 and second fan 22, and reach above-mentioned curve corresponding relation by characteristic circuit.
In addition, when the number of fans of serial fan group for surpassing two when above, still can utilize aforesaid way, draw out its rotating speed match curve graph of a relation, to get the information such as rotating speed corresponding relation of each fan, and the rotating speed by rotational speed control module control serial fan group, so that the serial fan group operates with optimum operation efficient in whole district's operating range.
By this control mode that obtains rotating speed match curve relation in advance, can allow first fan and second fan according to the running of rotating speed match curve relation, making the serial fan group is optimum operation efficient all at each operating point, reaches the purpose of control serial fan group.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of claim of the present invention.
Claims (9)
1, a kind of serial fan group is characterized in that, includes:
One rotational speed control module receives a power supply signal, and according to rotating speed match curve relation, and output is to rotating speed drive signal that should power supply signal;
One first fan is connected with this rotational speed control module, receives this power supply signal and drives, with the rotating speed running of a correspondence; And
One second fan is connected with this rotational speed control module, receives this rotating speed drive signal, with the running of the rotating speed of a correspondence, wherein this rotating speed match curve close be this first fan with this second fan when operating best blast and the rotating speed corresponding relation of flow.
2, serial fan group according to claim 1 is characterized in that, this rotational speed control module also receives the tachometer value of this first fan, with to concerning by the rotating speed match curve, exports this rotating speed drive signal.
3, serial fan group according to claim 1 is characterized in that, this first fan and this second fan are one to have the fan of multiple rotating speed.
4, a kind of serial fan group is characterized in that, includes:
One rotational speed control module receives a power supply signal, and according to rotating speed match curve relation, and output is to first and second rotating speed drive signal that should power supply signal;
One first fan receives this first rotating speed drive signal, with the rotating speed running of a correspondence; And
One second fan receives this second rotating speed drive signal, with the running of the rotating speed of a correspondence, wherein this rotating speed match curve close be this first fan with this second fan when operating best blast and the rotating speed corresponding relation of flow.
5, serial fan group according to claim 4 is characterized in that, this first fan and this second fan are one to have the fan of multiple rotating speed.
6, a kind of rotating speed method for generating match curve of serial fan group is characterized in that, this serial fan group is made up of one first fan and one second fan, and its step includes:
Set this first with many groups tachometer value of this second fan;
Make this serial fan group according to the running of many group tachometer values, to obtain a plurality of blast and flow curve;
Decision is this blast and the pairing local optimum value of flow curve respectively; And
Utilize this local optimum value correspondence respectively this first with this second rotation speed of the fan value, draw out the rotating speed match curve of this serial fan.
7, rotating speed method for generating match curve according to claim 6 is characterized in that, organize tachometer value is benchmark with the tachometer value of this first fan more, and the tachometer value scope of adjusting this second fan obtains.
8, rotating speed method for generating match curve according to claim 6 is characterized in that, organize tachometer value is benchmark with the tachometer value of this second fan more, and the tachometer value scope of adjusting this first fan obtains.
9, rotating speed method for generating match curve according to claim 6 is characterized in that, this first fan and this second fan are one to have the fan of multiple rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101016268A CN100354530C (en) | 2004-12-21 | 2004-12-21 | Serial fan group, and method for generating match curve of rotate speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101016268A CN100354530C (en) | 2004-12-21 | 2004-12-21 | Serial fan group, and method for generating match curve of rotate speed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1796796A CN1796796A (en) | 2006-07-05 |
| CN100354530C true CN100354530C (en) | 2007-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004101016268A Expired - Fee Related CN100354530C (en) | 2004-12-21 | 2004-12-21 | Serial fan group, and method for generating match curve of rotate speed |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101399517B (en) * | 2007-09-28 | 2012-07-18 | 升达科技有限公司 | Linear type fan rotation speed characteristic design circuit |
| EP2226507B1 (en) * | 2007-10-29 | 2018-09-05 | Sanyo Denki Co., Ltd. | Control method for a counter-rotating axial fan |
| CN101403391B (en) * | 2008-10-07 | 2012-05-23 | 同济大学 | Novel duplicate-power double-fan intelligent monitoring protection device |
| MX2011012551A (en) | 2009-10-27 | 2012-10-05 | Huntair Inc | Fan array control system. |
| US9017893B2 (en) * | 2011-06-24 | 2015-04-28 | Watt Fuel Cell Corp. | Fuel cell system with centrifugal blower system for providing a flow of gaseous medium thereto |
| DE102017116399A1 (en) * | 2017-07-20 | 2019-01-24 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Method for controlling at least two fans |
| CN108953186B (en) * | 2018-07-09 | 2021-04-27 | 广东美的环境电器制造有限公司 | Fan with cooling device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10257642A1 (en) * | 2002-12-10 | 2004-07-08 | Robert Bosch Gmbh | Motor vehicle double blower fan device wherein the two blowers can be controlled independently by use of a fan control unit and a temperature regulated switch |
| TWI220442B (en) * | 2003-04-11 | 2004-08-21 | Feature Integration Technology | Multi-speed intelligent fan speed control method |
| TWI222268B (en) * | 2003-08-26 | 2004-10-11 | Delta Electronics Inc | Fan system |
-
2004
- 2004-12-21 CN CNB2004101016268A patent/CN100354530C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10257642A1 (en) * | 2002-12-10 | 2004-07-08 | Robert Bosch Gmbh | Motor vehicle double blower fan device wherein the two blowers can be controlled independently by use of a fan control unit and a temperature regulated switch |
| TWI220442B (en) * | 2003-04-11 | 2004-08-21 | Feature Integration Technology | Multi-speed intelligent fan speed control method |
| TWI222268B (en) * | 2003-08-26 | 2004-10-11 | Delta Electronics Inc | Fan system |
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| CN1796796A (en) | 2006-07-05 |
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Granted publication date: 20071212 Termination date: 20211221 |