CN104564769B - Automatic dust removal control method and automatic dust removal control device for fans - Google Patents
Automatic dust removal control method and automatic dust removal control device for fans Download PDFInfo
- Publication number
- CN104564769B CN104564769B CN201510044723.6A CN201510044723A CN104564769B CN 104564769 B CN104564769 B CN 104564769B CN 201510044723 A CN201510044723 A CN 201510044723A CN 104564769 B CN104564769 B CN 104564769B
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- Prior art keywords
- fan
- rotation speed
- automatic dust
- default rotation
- dust removing
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Classifications
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- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
Abstract
The invention discloses an automatic dust removal control method and an automatic dust removal control device for fans, and relates to control technologies for fans of computers. The automatic dust removal control method includes detecting current clockwise rotational speeds of the fans in computer system running periods; allowing the fans to keep in current states under the control when the clockwise rotational speeds are higher than second preset rotational speeds of the fans and are smaller than first preset rotational speeds of the fans; activating automatic dust removal functions of the fans when the clockwise rotational speeds are lower than or equal to the second preset rotational speeds of the fans and allowing the fans to rotate anticlockwise under the control after the clockwise rotational speeds are further reduced so as to automatically remove dust. The automatic dust removal control method and the automatic dust removal control device have the advantages that the dust can be intelligently automatically removed when computer systems run, accordingly, the user experience can be enhanced, and the competitiveness of products can be improved.
Description
Technical field
The present invention relates to computer fan control technology, particularly to a kind of fan automatic dust removing control method and correlation
Device.
Background technology
Computer particularly notebook computer is constantly to lightening development.In the case of small volume, limited space, notes
This computer needs to have good heat dispersion.
At present, notebook computer sucks, using fan, the purpose that cold air is realized to each cooling electronic component, but
During use, also can suck dust while sucking cold air, and make dust deposit in positions such as fans, lead to rotation speed of the fan
Decline, laptop radiating ability declines, not only affect computer system performance, or even relative electronic components can be reduced
Life-span.
Existing notebook computer, when using fan dedusting, typically has following two designs:
1st, fan carries out dedusting in one section of set time in computer system starting, and machine system to be calculated is normally run
When, then no dust removing effects.
2nd, fan can start dedusting in user's triggering dedusting signal.
Content of the invention
It is an object of the invention to provide a kind of fan automatic dust removing control method and device, can preferably solve calculating
The problem of intelligent automatic dust removing during machine system operation.
According to an aspect of the invention, it is provided a kind of fan automatic dust removing control method, comprising:
In computer system run duration, detection is when the rotating forward rotating speed of forefan；
When described rotating forward rotating speed is more than the second default rotation speed of the fan and the default rotation speed of the fan less than first, fan is controlled to protect
Hold current state；
When described rotating forward rotating speed is less than or equal to the second default rotation speed of the fan, start fan automatic dedusting function, so that
After described rotating forward rotating speed reduces further, fan is controlled to invert with automatic dust removing.
Preferably, described rotating forward after rotating speed reduces further, control fan reversion to include with the step of automatic dust removing:
When rotating forward rotating speed is reduced to the second default following predetermined value of rotation speed of the fan, fan is controlled to invert with automatic dust removing.
Preferably, the described first default rotation speed of the fan goes to 3200 turns for per minute 2800, and the described second default fan turns
Speed is the 65% to 70% of the first default rotation speed of the fan.
Preferably, also include:
During fan inverts, detection is when the reverse of forefan；
When described reverse reaches the second default rotation speed of the fan, control fan to stop reversion, and recover to rotate forward.
Preferably, also include:
When this dedusting terminates, and when described reverse is less than the second default rotation speed of the fan, obtain computer system fortune
The row time；
When described computer system run time is more than predetermined system run time, start automatic dust removing next time, no
Then, control fan to stop reversion, and recover to rotate forward.
According to a further aspect in the invention, there is provided a kind of fan automatic dust removing control device, comprising:
Detection module, in computer system run duration, detection is when the rotating forward rotating speed of forefan；
Processing module, for when described rotating forward rotating speed is more than the second default rotation speed of the fan and is less than the first default rotation speed of the fan
When, control fan to keep current state, and when described rotating forward rotating speed is less than or equal to the second default rotation speed of the fan, start fan
Automatic dedusting function, after described rotating forward rotating speed reduces further, to control fan to invert with automatic dust removing.
Preferably, described processing module, when rotating forward rotating speed is reduced to the second default following predetermined value of rotation speed of the fan, controls
Fan inverts with automatic dust removing.
Preferably, the described first default rotation speed of the fan goes to 3200 turns for per minute 2800, and the described second default fan turns
Speed is the 65% to 70% of the first default rotation speed of the fan.
Preferably, during fan reversion, the reverse of forefan is worked as in detection to described detection module, when described reversion turns
When speed reaches the second default rotation speed of the fan, described processing module controls fan to stop reversion, and recovers to rotate forward.
Preferably, when this dedusting terminates, and when described reverse is less than the second default rotation speed of the fan, described process mould
Block obtains computer system run time, and when described computer system run time is more than predetermined system run time, opens
Dynamic automatic dust removing next time, otherwise, controls fan to stop reversion, and recovers to rotate forward.
Compared with prior art, the beneficial effects of the present invention is:
By the present invention, computer system in run duration, the fan of computer can intelligent automatic dust removing, thus improving
Consumer's Experience, increased product competitiveness.
Brief description
Fig. 1 is fan automatic dust removing control method theory diagram provided in an embodiment of the present invention；
Fig. 2 is fan automatic dust removing control device block diagram provided in an embodiment of the present invention；
Fig. 3 is fan automatic dust removing control flow chart provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail it will be appreciated that described below is excellent
Select embodiment to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Fig. 1 is fan automatic dust removing control method theory diagram provided in an embodiment of the present invention, as shown in figure 1, step bag
Include:
Step s101: in computer system run duration, detection is when the rotating forward rotating speed of forefan.
Embedded controller (embedded controller, ec) can load thermal when computer system initializes
Two forms of table and fan table.Different grades of temperature corresponding fan table defined in thermal table
index；The different grades of rotating speed of fan defined in fan table.Ec passes through System Management Bus (system management
Bus, smbus) read system temperature, and according to by above table, determine rotation speed of the fan.After determining rotation speed of the fan, ec passes through
The dutycycle of pulse-width signal, controls the rotating forward rotating speed when forefan.Therefore, in this step, dutycycle can be passed through, detection
Go out the rotating forward rotating speed when forefan.
Step s102: when described rotating forward rotating speed is more than the second default rotation speed of the fan and the default rotation speed of the fan less than first,
Fan is controlled to keep current state.
In this step, the first default rotation speed of the fan is 2800 to 3200 rpms (rpm), for example, 2800rpm,
2900rpm、3000rpm、3100rpm、3200rpm.
In this step, the second default rotation speed of the fan is the 65% to 70% of the first default rotation speed of the fan, for example, 1820rpm,
1900rpm, 1950rpm, 2000rpm, 2050rpm, 2100rpm, 2200rpm etc..
Step s103: when described rotating forward rotating speed is less than or equal to the second default rotation speed of the fan, start fan automatic dust removing
Function, after described rotating forward rotating speed reduces further, to control fan to invert with automatic dust removing.
Specifically, when rotating forward rotating speed is reduced to the second default following predetermined value of rotation speed of the fan, control fan reversion with certainly
Dynamic dedusting, described predetermined value can be 100rpm, 150rpm, 200rpm, 250rpm, 300rpm etc..For example, it is assumed that second is default
Rotation speed of the fan is 2000rpm, and predetermined value is 200rpm, is reduced to below 2000rpm 200rpm when rotating forward rotating speed, that is, is reduced to little
In or be equal to 1800rpm when, control fan invert with automatic dust removing.During fan inverts, by dutycycle, detect current wind
The reverse of fan, and when described reverse reaches 2000rpm, control fan to stop reversion, and recover to rotate forward.If this
After secondary dedusting terminates, reverse still less than 2000rpm, then obtains computer system run time, when described computer system
When run time is more than predetermined system run time, start automatic dust removing next time, otherwise, control fan to stop reversion, and extensive
Multiple rotating forward.
Fig. 2 is fan automatic dust removing control device block diagram provided in an embodiment of the present invention, as shown in Fig. 2 including detection mould
Block 21 and processing module 22.
Detection module 21, in computer system run duration, by dutycycle, detects and determines just walking around when forefan
Speed.When described rotating forward rotating speed is more than or equal to the first default rotation speed of the fan, processing module 22 closes fan automatic dedusting function；
When described rotating forward rotating speed is more than the second default rotation speed of the fan and the default rotation speed of the fan less than first, processing module 22 controls fan
Keep current state；When described rotating forward rotating speed is less than or equal to the second default rotation speed of the fan, start fan automatic dedusting function,
So that after described rotating forward rotating speed reduces further, control fan reversion with automatic dust removing, be reduced to second in rotating forward rotating speed
During the following predetermined value of default rotation speed of the fan, processing module 22 controls fan to invert with automatic dust removing.During fan inverts, detection
Module passes through dutycycle, detects and determine the reverse when forefan, turns when described reverse reaches the second default fan
When fast, described processing module controls fan to stop reversion, and recovers to rotate forward.When this dedusting terminates, and described reverse is little
When the second default rotation speed of the fan, described processing module obtains computer system run time, and when described computer system fortune
When the row time is more than predetermined system run time, start automatic dust removing next time, otherwise, control fan to stop reversion, and recover
Rotate forward.
Above-mentioned first default rotation speed of the fan goes to 3200 turns for per minute 2800, and the described second default rotation speed of the fan is first
The 65% to 70% of default rotation speed of the fan.
Fig. 3 is fan automatic dust removing control flow chart provided in an embodiment of the present invention, as shown in figure 3, step includes:
Step s301: computer system is run.
Step s302: judge fan running speed whether more than or equal to a certain value (i.e. the first default rotation speed of the fan, with
As a example 3000rpm), if so, then execution step s310, otherwise execution step s303.
Described fan running speed refers to the rotating forward rotating speed when forefan.
Step s303: judge fan running speed whether less than or equal to a certain value (i.e. the second default rotation speed of the fan, with
As a example 2000rpm), if so, then execution step s304, otherwise execution step s311.
Step s304:ec detecting fan duty is less than a certain value (2000rpm), and fan dedusting function is opened.
Ec detecting controls the dutycycle (duty cycle) of rotation speed of the fan, and determines the rotating forward when forefan according to dutycycle
Rotating speed.
Step s305: judge rotation speed of the fan whether than the rotating speed (2000rpm) in fan table low setting value (with
As a example 200rpm), if low 200rpm, that is, rotation speed of the fan is less than 1800rpm, then execution step s306, otherwise execution step s311.
Step s306: fan inverts and starts dedusting.
Step s307: judge whether rotation speed of the fan reaches the rotating speed (2000rpm) in fan table, if reaching
2000rpm, then execution step s308, otherwise execution step s309.
Step s308: this dedusting terminates, fan recovers rotating forward state.
Step s309: whether (i.e. predetermined system run time with 100h is detecting system run time more than a certain value
Example), if so, then execution step s301, otherwise execution step s308.
Step s310: automatic dedusting function is closed.
Step s311: keep current state.
From the present embodiment, user using in notebook product process, when the rotating speed of fan operation is higher than a certain setting
During definite value (as 3000rpm), fan automatic dedusting function is closed；User using in notebook product process, when fan runs
Rotating speed be less than a certain setting value (as 2000rpm) when, fan automatic dedusting function open.After dedusting function is opened, fan is detectd
Survey the corresponding rotation speed of the fan of duty cycle, if now rotating speed a certain particular value low compared with the rotating speed in fan table is (such as
200rpm), fan starts to invert and starts dedusting.After dedusting finishes, ec detect rotation speed of the fan whether with fan table in set
Definite value is consistent, if unanimously, after dedusting terminates, fan recovers rotating forward state；If inconsistent, after dedusting terminates, detecting system
Whether run time is more than a certain setting value (as 100 hours)；If greater than 100 hours, continue second dedusting；If less than
100 hours, after dedusting terminates, fan recovered rotating forward state.
In sum, the present invention has following technical effect that
By the present invention, user in system operation, notebook fan can intelligent automatic dust removing, product is increased with this competing
Strive power.
Although being described in detail to the present invention above, the invention is not restricted to this, those skilled in the art of the present technique
Various modifications can be carried out according to the principle of the present invention.Therefore, all modifications made according to the principle of the invention, all should be understood to
Fall into protection scope of the present invention.
Claims (6)
1. a kind of fan automatic dust removing control method is it is characterised in that include:
In computer system run duration, detection is when the rotating forward rotating speed of forefan；
When described rotating forward rotating speed is more than the second default rotation speed of the fan and the default rotation speed of the fan less than first, fan is controlled to keep working as
Front state；
When described rotating forward rotating speed is less than or equal to the second default rotation speed of the fan, start fan automatic dedusting function, so that in institute
State rotating forward rotating speed reduce further after, control fan invert with automatic dust removing；
During fan inverts, detection is when the reverse of forefan；
When described reverse reaches the second default rotation speed of the fan, control fan to stop reversion, and recover to rotate forward；
When this dedusting terminates, and when described reverse is less than the second default rotation speed of the fan, when obtaining computer system operation
Between；
When described computer system run time is more than predetermined system run time, start automatic dust removing next time, otherwise, control
Fan processed stops reversion, and recovers to rotate forward.
2. method according to claim 1, it is characterised in that described rotating forward after rotating speed reduces further, controls fan
Reversion is included with the step of automatic dust removing:
When rotating forward rotating speed is reduced to the second default following predetermined value of rotation speed of the fan, fan is controlled to invert with automatic dust removing.
3. method according to claim 1 and 2 is it is characterised in that the described first default rotation speed of the fan is per minute 2800
Go to 3200 turns, the described second default rotation speed of the fan is the 65% to 70% of the first default rotation speed of the fan.
4. a kind of fan automatic dust removing control device is it is characterised in that include:
Detection module, in computer system run duration, detection is when the rotating forward rotating speed of forefan；
Processing module, for when described rotating forward rotating speed is more than the second default rotation speed of the fan and the default rotation speed of the fan less than first,
Control fan holding current state, and when described rotating forward rotating speed is less than or equal to the second default rotation speed of the fan, start fan certainly
Dynamic dedusting function, after described rotating forward rotating speed reduces further, to control fan to invert with automatic dust removing；
During fan reversion, the reverse of forefan is worked as in detection to described detection module, when described reverse reaches second
During default rotation speed of the fan, described processing module controls fan to stop reversion, and recovers to rotate forward；
When this dedusting terminates, and when described reverse is less than the second default rotation speed of the fan, described processing module obtains and calculates
Machine system operation time, and when described computer system run time is more than predetermined system run time, start next time certainly
Dynamic dedusting, otherwise, controls fan to stop reversion, and recovers to rotate forward.
5. device according to claim 4 it is characterised in that described processing module rotate forward rotating speed be reduced to second preset
During the following predetermined value of rotation speed of the fan, fan is controlled to invert with automatic dust removing.
6. the device according to claim 4 or 5 is it is characterised in that the described first default rotation speed of the fan is per minute 2800
Go to 3200 turns, the described second default rotation speed of the fan is the 65% to 70% of the first default rotation speed of the fan.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510044723.6A CN104564769B (en) | 2015-01-28 | 2015-01-28 | Automatic dust removal control method and automatic dust removal control device for fans |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510044723.6A CN104564769B (en) | 2015-01-28 | 2015-01-28 | Automatic dust removal control method and automatic dust removal control device for fans |
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| CN104564769A CN104564769A (en) | 2015-04-29 |
| CN104564769B true CN104564769B (en) | 2017-01-18 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113419614A (en) * | 2021-03-31 | 2021-09-21 | 联想(北京)有限公司 | Control method and control device for heat dissipation component |
| CN113606029B (en) * | 2021-08-31 | 2022-11-01 | 三一重机有限公司 | Control method and control device for cooling fan, engineering machine and storage medium |
| CN115355287B (en) * | 2022-06-30 | 2023-10-27 | 九方泰禾国际重工(青岛)股份有限公司 | Forward and reverse rotation transmission device of cooling fan |
| CN115360925A (en) * | 2022-09-13 | 2022-11-18 | 阳光电源股份有限公司 | Power converter and automatic dust cleaning method |
| CN117458954B (en) * | 2023-12-21 | 2024-03-08 | 珠海格力电器股份有限公司 | Motor protection control method and device, fan and air conditioner |
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| CN102996483A (en) * | 2011-09-13 | 2013-03-27 | 宏碁股份有限公司 | Automatic dust removing fan device and dust removing method for same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001251077A (en) * | 2000-03-06 | 2001-09-14 | Yamaha Corp | Fan driving device for electronic equipment |
| JP2002242878A (en) * | 2001-02-14 | 2002-08-28 | Hitachi Kokusai Electric Inc | Air blasting cooling system |
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|---|---|---|---|---|
| CN1967442A (en) * | 2005-11-18 | 2007-05-23 | 纬创资通股份有限公司 | Method for dedusting by radiator fan and dust cleaning apparatus for computer device |
| CN101783185A (en) * | 2008-09-19 | 2010-07-21 | 英特尔公司 | Reducing accumulation of dust particles on a heat dissipating arrangement |
| CN102996483A (en) * | 2011-09-13 | 2013-03-27 | 宏碁股份有限公司 | Automatic dust removing fan device and dust removing method for same |
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| CN104564769A (en) | 2015-04-29 |
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Effective date of registration: 20201215 Address after: 601-g6-1, 6th floor, building 2, No. 6, Shangdi West Road, Haidian District, Beijing 100085 Patentee after: Lenovo Kaitian Technology Co., Ltd Address before: 230601 418, 4 building, Hai Heng mansion 6, Cui Wei Road, Hefei economic and Technological Development Zone, Anhui Patentee before: HEFEI LCFC INFORMATION TECHNOLOGY Co.,Ltd. |
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