CN104879313A - PWM controlled cooling fan based on temperature induction - Google Patents
PWM controlled cooling fan based on temperature induction Download PDFInfo
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- CN104879313A CN104879313A CN201510256125.5A CN201510256125A CN104879313A CN 104879313 A CN104879313 A CN 104879313A CN 201510256125 A CN201510256125 A CN 201510256125A CN 104879313 A CN104879313 A CN 104879313A
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- radiation fan
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- 238000001816 cooling Methods 0.000 title abstract description 11
- 230000006698 induction Effects 0.000 title abstract 5
- 230000005855 radiation Effects 0.000 claims description 52
- 230000036413 temperature sense Effects 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000000052 comparative effect Effects 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000003570 air Substances 0.000 description 8
- 241000883990 Flabellum Species 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a PWM controlled cooling fan based on temperature induction. The PWM controlled cooling fan based on the temperature induction comprises a cooling fan body, a temperature sensor, a PWM module and a control module, wherein the temperature sensor is used for collecting environmental temperature information; the PWM module is used for adjusting the rotation speed of the cooling fan body based on a received instruction; the control module is used for comparing the received temperature information respectively with a preset minimal temperature threshold value and a preset maximal temperature threshold value, and sending an instruction to the PWM module based on the comparison result. Being simple in structure and convenient to use, the PWM controlled cooling fan based on the temperature induction can automatically adjust the rotation speed of the cooling fan; and accordingly the PWM controlled cooling fan based on the temperature induction has a substantially great practical value.
Description
Technical field
The present invention relates to electrical equipment control field, particularly relate to the radiation fan controlled based on temperature sense and PWM.
Background technique
The working principle of radiation fan realizes by Conversion of Energy, that is: electric energy → electromagnetic energy → mechanical energy → kinetic energy.Its circuit theory is generally divided into various ways, and the circuit of employing is different, and the performance of radiation fan will be variant.
Radiation fan is divided into axial fan, centrifugal cutter, mixed flow fan and cross flow blower.
The blades push air of axial fan flows with the direction identical with axle.Impeller and the propeller cavitation of axial fan are somewhat similar, it operationally, the flow direction of most air-flow is parallel with axle, in other words in the axial direction.Axial fan is when inlet air flow is the free air of 0 static pressure, and it is least in power-consuming, also can be able to increase when in place along with the rising power consumption of air-flow back pressure.Axial fan is contained on the rack of electrical equipment usually, is sometimes also incorporated on motor, because axial flow fan structure is compact, can save a lot of space, simultaneously easy for installation, is therefore widely used.The feature of axial fan is higher flow rate, medium blast.
During centrifugal cutter work, blades push air flows with the direction (namely radial) perpendicular with axle, and air inlet is in the axial direction, and gives vent to anger perpendicular to axial direction.In most cases, use axial fan just can reach cooling effect, but, if when sometimes needing the blast that flow rotation 90 degree is discharged or needs are larger, just must centrifugal cutter be selected.Blower fan is strict, also belongs to centrifugal cutter.The feature of centrifugal cutter is limited flow rate, high blast.
Mixed flow fan flows to fan also known as diagonal, and just at a glance, mixed flow fan and axial fan have no difference, and in fact, the air inlet of mixed flow fan is along axis, but to give vent to anger but be diagonal along axis and vertical axis.This fan claims taper shape due to blade and outer cover, therefore causes blast higher, and under same size and other comparable performances, compared with axial fan, the noise of centrifugal cutter is lower.The feature of mixed flow fan is high flow rate and relatively high blast.
Cross flow blower can produce large-area distinguished and admirable, is generally used for the large surface of cooling equipment.The air inlet of this fan and giving vent to anger all perpendicular to axis.Cross flow fan is that the long barrel-shaped Vane wheel of use one carries out work, the bore of this barrel-shaped flabellum is all larger, because bore is large, could use lower rotating speed on the basis ensureing integrated air circulating load, thus, reduce the noise brought owing to running up.The feature of cross flow blower is low flow rate and low blast.
We have entered the electronic product revolution epoch needing high-performance and circuit miniaturization.The raising of electronics performance and size reduce the increase causing power consumption and heat radiation.Therefore, again and again there is heat management problems in the different solutions from PC to high-end server.System cools/heat management has become the mission critical of all high-performance electric subtense angles.Usual employing forced convection mode realizes heat management.Forced convection mode improves heat radiation by transfer thermal source inside and ambient air.Adopt brushless direct-current (BLDC) radiation fan easily can realize above-mentioned purpose.The rotating speed of this type of radiation fan depends on its RMS voltage.Can realize heat management by full speed running radiation fan, but the high rotating speed of radiation fan can cause following problem:
1. improve audible noise;
2. increase power consumption;
3. reduction of service life (mechanical wear);
4. increase blocking (control of dust).
But, cooling can be caused again when radiation fan runs lower than required rotating speed not enough, thus cause overheating components.Overheated meeting causes component faults.In order to solve problems, environmentally condition (that is: temperature) radiating fan rotation speed must be controlled.
Existing radiation fan is all generally based on the running of fixing wind speed, can not solve the problem, or waste energy, or heat sinking function is limited.
Patent " radiation fan " (application number: 201320815942.6 applyings date: 2013-12-11) discloses a kind of radiation fan, comprise Alternating Current Power Supply motor-drive circuit, Alternating Current Power Supply motor-drive circuit also comprise connect successively full bridge rectifier, reduction voltage circuit and circuit for controlling motor, electric machine and flabellum main body, wherein: full bridge rectifier comprises rectifier; Circuit for controlling motor is electrically connected with electric machine; Electric machine comprises stator, line bag, motor shell (iron-clad, magnetic stripe); Flabellum main body is fixedly connected with motor shell; Line is surrounded by multiple; Multiple line is bundled into annular arrangement and is placed in the motor shell of flabellum on stator.
The radiation fan that this model utility provides, circuit structure is simple, and has that rotating speed is high, good heat dissipation effect; Power is low, efficiency is high, energy-conservation; Adapt to wider input voltage, input ac voltage scope large (110-240V), output VDC are all 24V, stabilization of speed; The features such as practicability is wide, but it can not according to the wind speed of the temperature automatic adjustment fan of reality.
Summary of the invention
Technical problem to be solved by this invention is for problem involved in background technique, provides a kind of radiation fan controlled based on temperature sense and PWM.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
Based on the radiation fan that temperature sense and PWM control, comprise radiation fan body, temperature transducer, PWM module and control module, described control module is connected with PWM module, temperature transducer respectively, and the motor of described radiation fan body is connected with PWM module;
Described temperature inductor is for gathering the temperature information of environment and being passed to control module;
Described PWM module is used for the wind speed according to the instruction adjustment radiation fan body received;
Described control module comprises temperature comparing unit and instruction sending unit;
The minimum temperature threshold that described temperature comparing unit is used for the temperature information received to preset respectively compares with the maximum temperature threshold preset, and comparative result is passed to instruction sending unit;
Described instruction sending unit is used for the transmission when the temperature information received is less than default minimum temperature threshold and reduces the instruction of radiation fan wind speed to PWM module, and transmission increases the instruction of radiation fan wind speed to PWM module when the temperature information received is greater than default maximum temperature threshold.
As the further optimized project of radiation fan that the present invention is based on temperature sense and PWM control, the processor of described control module adopts 51 series monolithics.
As the further optimized project of radiation fan that the present invention is based on temperature sense and PWM control, the processor of described control module adopts AT89S52 single-chip microcomputer.
As the further optimized project of radiation fan that the present invention is based on temperature sense and PWM control, described temperature transducer adopts IC temperature transducer.
As the further optimized project of radiation fan that the present invention is based on temperature sense and PWM control, described IC temperature transducer adopts DS18B20 type temperature transducer.
As the further optimized project of radiation fan that the present invention is based on temperature sense and PWM control, described radiation fan body adopts brushless direct-current radiation fan.
The present invention adopts above technological scheme compared with prior art, has following technique effect:
1. structure is simple, easy to use;
2. can according to the wind speed of temperature automatic adjustment radiation fan, energy-saving and emission-reduction.
Embodiment
Below technological scheme of the present invention is described in further detail:
The invention discloses a kind of radiation fan controlled based on temperature sense and PWM, comprise radiation fan body, temperature transducer, PWM module and control module, described control module is connected with PWM module, temperature transducer respectively, and the motor of described radiation fan body is connected with PWM module;
Described temperature inductor is for gathering the temperature information of environment and being passed to control module;
Described PWM module is used for the wind speed according to the instruction adjustment radiation fan body received;
Described control module comprises temperature comparing unit and instruction sending unit;
The minimum temperature threshold that described temperature comparing unit is used for the temperature information received to preset respectively compares with the maximum temperature threshold preset, and comparative result is passed to instruction sending unit;
Described instruction sending unit is used for the transmission when the temperature information received is less than default minimum temperature threshold and reduces the instruction of radiation fan wind speed to PWM module, and transmission increases the instruction of radiation fan wind speed to PWM module when the temperature information received is greater than default maximum temperature threshold.
The processor of described control module adopts 51 series monolithics, preferential employing AT89S52 single-chip microcomputer.
Described temperature transducer adopts IC temperature transducer, preferential employing DS18B20 type temperature transducer.
Described radiation fan body adopts brushless direct-current radiation fan.
Those skilled in the art of the present technique are understandable that, unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Above-described embodiment; object of the present invention, technological scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. based on the radiation fan that temperature sense and PWM control, it is characterized in that, comprise radiation fan body, temperature transducer, PWM module and control module, described control module is connected with PWM module, temperature transducer respectively, and the motor of described radiation fan body is connected with PWM module;
Described temperature inductor is for gathering the temperature information of environment and being passed to control module;
Described PWM module is used for the wind speed according to the instruction adjustment radiation fan body received;
Described control module comprises temperature comparing unit and instruction sending unit;
The minimum temperature threshold that described temperature comparing unit is used for the temperature information received to preset respectively compares with the maximum temperature threshold preset, and comparative result is passed to instruction sending unit;
Described instruction sending unit is used for the transmission when the temperature information received is less than default minimum temperature threshold and reduces the instruction of radiation fan wind speed to PWM module, and transmission increases the instruction of radiation fan wind speed to PWM module when the temperature information received is greater than default maximum temperature threshold.
2. the radiation fan controlled based on temperature sense and PWM according to claim 1, it is characterized in that, the processor of described control module adopts 51 series monolithics.
3. the radiation fan controlled based on temperature sense and PWM according to claim 2, is characterized in that, the processor of described control module adopts AT89S52 single-chip microcomputer.
4. the radiation fan controlled based on temperature sense and PWM according to claim 1, it is characterized in that, described temperature transducer adopts IC temperature transducer.
5. the radiation fan controlled based on temperature sense and PWM according to claim 4, is characterized in that, described IC temperature transducer adopts DS18B20 type temperature transducer.
6. the radiation fan controlled based on temperature sense and PWM according to claim 4, it is characterized in that, described radiation fan body adopts brushless direct-current radiation fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510256125.5A CN104879313A (en) | 2015-05-20 | 2015-05-20 | PWM controlled cooling fan based on temperature induction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510256125.5A CN104879313A (en) | 2015-05-20 | 2015-05-20 | PWM controlled cooling fan based on temperature induction |
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| CN104879313A true CN104879313A (en) | 2015-09-02 |
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| CN201510256125.5A Withdrawn CN104879313A (en) | 2015-05-20 | 2015-05-20 | PWM controlled cooling fan based on temperature induction |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109656777A (en) * | 2018-11-20 | 2019-04-19 | 山东超越数控电子股份有限公司 | A kind of reducing fan noise regulation method, apparatus, terminal and storage medium |
| CN110017295A (en) * | 2019-02-25 | 2019-07-16 | 睿高(广州)通信技术有限公司 | Temprature control method, computer equipment and the storage medium of satellite power amplifier transmitter |
| CN110485091A (en) * | 2019-09-02 | 2019-11-22 | 陈思 | A kind of gas-liquid dyeing machine wind speed adjustment equipment using temperature change |
| CN110630553A (en) * | 2019-10-10 | 2019-12-31 | 佛山格尼斯磁悬浮技术有限公司 | Self-adaptive temperature adjusting method, device and system of magnetic suspension blower |
| CN111749920A (en) * | 2020-06-19 | 2020-10-09 | 烽火通信科技股份有限公司 | Stepless speed regulation method and device for fan of electromechanical system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10143257A (en) * | 1996-11-08 | 1998-05-29 | Sansha Electric Mfg Co Ltd | Electric power unit |
| US20050237690A1 (en) * | 2002-08-06 | 2005-10-27 | Dhuey Michael J | Quiet fan speed control |
| CN101424949A (en) * | 2007-11-01 | 2009-05-06 | 大唐移动通信设备有限公司 | Blower fan rotate speed control method for electronic appliance and device |
| CN202396132U (en) * | 2011-12-22 | 2012-08-22 | 青岛海信电器股份有限公司 | Fan radiating control circuit and television |
| CN202402306U (en) * | 2011-12-05 | 2012-08-29 | 深圳宝龙达信息技术股份有限公司 | Intelligent control circuit for electric fan |
-
2015
- 2015-05-20 CN CN201510256125.5A patent/CN104879313A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10143257A (en) * | 1996-11-08 | 1998-05-29 | Sansha Electric Mfg Co Ltd | Electric power unit |
| US20050237690A1 (en) * | 2002-08-06 | 2005-10-27 | Dhuey Michael J | Quiet fan speed control |
| CN101424949A (en) * | 2007-11-01 | 2009-05-06 | 大唐移动通信设备有限公司 | Blower fan rotate speed control method for electronic appliance and device |
| CN202402306U (en) * | 2011-12-05 | 2012-08-29 | 深圳宝龙达信息技术股份有限公司 | Intelligent control circuit for electric fan |
| CN202396132U (en) * | 2011-12-22 | 2012-08-22 | 青岛海信电器股份有限公司 | Fan radiating control circuit and television |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109656777A (en) * | 2018-11-20 | 2019-04-19 | 山东超越数控电子股份有限公司 | A kind of reducing fan noise regulation method, apparatus, terminal and storage medium |
| CN110017295A (en) * | 2019-02-25 | 2019-07-16 | 睿高(广州)通信技术有限公司 | Temprature control method, computer equipment and the storage medium of satellite power amplifier transmitter |
| CN110485091A (en) * | 2019-09-02 | 2019-11-22 | 陈思 | A kind of gas-liquid dyeing machine wind speed adjustment equipment using temperature change |
| CN110630553A (en) * | 2019-10-10 | 2019-12-31 | 佛山格尼斯磁悬浮技术有限公司 | Self-adaptive temperature adjusting method, device and system of magnetic suspension blower |
| CN111749920A (en) * | 2020-06-19 | 2020-10-09 | 烽火通信科技股份有限公司 | Stepless speed regulation method and device for fan of electromechanical system |
| CN111749920B (en) * | 2020-06-19 | 2021-11-26 | 烽火通信科技股份有限公司 | Stepless speed regulation method and device for fan of electromechanical system |
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Application publication date: 20150902 |