CN107035706A - A kind of intelligent fan - Google Patents
A kind of intelligent fan Download PDFInfo
- Publication number
- CN107035706A CN107035706A CN201710284472.8A CN201710284472A CN107035706A CN 107035706 A CN107035706 A CN 107035706A CN 201710284472 A CN201710284472 A CN 201710284472A CN 107035706 A CN107035706 A CN 107035706A
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- CN
- China
- Prior art keywords
- fan
- controller
- control element
- logic control
- voltage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- 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
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
-
- 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
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/303—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/304—Spool rotational speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/50—Control logic embodiments
- F05D2270/52—Control logic embodiments by electrical means, e.g. relays or switches
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The present invention relates to a kind of intelligent fan, for being radiated to default equipment, including fan body, controller, temperature sensor, logic control element, voltage regulation unit；The controller is connected with the temperature sensor, the real time temperature for obtaining the equipment；The controller controls the voltage regulation unit by the logic control element；The voltage regulation unit feeds back to voltage adjuster using thermistor according to the change in resistance of the real time temperature of equipment, so as to adjust the size of fan wind-force, realizes fan stepless speed regulation, efficiently using electric energy, saves the energy.
Description
Technical field
The present invention relates to the radiator fan in electronic equipment, more particularly to a kind of intelligent fan.
Background technology
Now, in order to save, reduce fan noise and improve the life-span of fan, typically it can all be carried out in electronic equipment internal
Speed governing is designed.The operating temperature range that electronic equipment is set such as is divided into several regions, in low-temperature region, using low turn
Speed；Middle temperature area, using moderate rotation；High-temperature area, is turned using full speed.But this mode of speed regulation has a disadvantage that：First, adjust
Fast strategy is more rough, typically only does 2-5 grades of speed governing；Second, the high speed mode has hysteresis quality, cannot be according to environment temperature come real
When speed governing；3rd, after alignment circuit fails, fan may be stalled, if without finding in time, may damage equipment.
The content of the invention
It is an object of the invention to the shortcoming for overcoming prior art, there is provided a kind of intelligent fan.
In order to solve the above technical problems, present invention employs following technical measures：
A kind of intelligent fan, for being radiated to default equipment, including fan body, controller, temperature sensor, is patrolled
Collect control unit, voltage regulation unit；The controller is connected with the temperature sensor, for obtaining the real-time of the equipment
Temperature；The controller controls the opening and closing of the voltage regulation unit by the logic control element；The voltage
Adjustment unit includes voltage adjuster, first resistor, second resistance, the first inductance, the second electric capacity, the 4th electric capacity；The voltage
Adjuster is the adjustable DC-DC chips of output voltage, including feedback end FB, output end LX, Enable Pin EN；The voltage adjuster
Enable Pin EN be connected with the logic control element；Between the output end LX and speed electric output end of the voltage adjuster
Connect first inductance；Connected between the speed electric output end and ground terminal second electric capacity；The speed electric is defeated
Go out between end and ground terminal and be sequentially connected in series the first resistor and second resistance, and the tie point of the first resistor and second resistance
It is connected with the feedback end FB of the voltage adjuster；4th electric capacity is in parallel with the first resistor；The second resistance is
Negative tempperature coefficient thermistor；The speed electric output end connects the power end of the fan body.
As a further improvement, the fan body includes status pin, it is connected with the logic control element, for examining
Survey the rotating speed of fan.
As a further improvement, also including on-off circuit, the input voltage of the power end for selecting the fan body.
As a further improvement, the on-off circuit includes single-pole double-throw relay；The single-pole double-throw relay it is normal
Beginning connects dc source, and normal-closed end connects the speed electric output end, and common port connects the power end of the fan body；
The controller controls the single-pole double-throw relay by the logic control element.
As a further improvement, the on-off circuit includes the first triode, the second triode；First triode
Emitter stage connects dc source, and colelctor electrode connects the power end of the fan body；The emitter stage connection of second triode
The speed electric output end, colelctor electrode connects the power end of the fan body；The controller passes through the logic control
Unit controls first triode and the second triode.
As a further improvement, the controller connection control platform, for feeding back information to user.
As a further improvement, the logic control element is the logic chip based on CPLD.
As a further improvement, the temperature sensor uses LM75.
A kind of control method of intelligent fan in accordance with the above, comprises the following steps：
S1, in the boot stages, whether detection fan is normal, abnormal normally then into step S2, hangs over the boot stages；
S2, controller monitors the real time temperature of the equipment in real time；
S3, when the operating temperature of equipment is less than threshold temperature, the controller is closed by the logic control element
The voltage adjuster so that fan is stalled；When temperature is optionally greater than the threshold temperature, then the voltage adjustment is opened
Device, fan is started working, and stepless speed regulation is realized by the negative tempperature coefficient thermistor.
A kind of control method in accordance with the above, the status pin of the fan body connects the logic control element,
Rotating speed for detecting fan；Also include on-off circuit, the input voltage of the power end for selecting the fan body；It is described
On-off circuit includes single-pole double-throw relay；The normally opened end connection dc source of the single-pole double-throw relay, normal-closed end connection
The speed electric output end, common port connects the power end of the fan body；The single-pole double-throw relay is by the control
Device processed is controlled by the logic control element, and the control method is further comprising the steps of：
S4, when the controller receives the stalling information of fan, while reading the present real-time temperature of the equipment；
S5, when the operating temperature of equipment is optionally greater than the threshold temperature, the controller passes through the logic control
Unit controls the on-off circuit, and dc source directly is led into fan power supply end so that fan is rotated at full speed；
Whether S6, detection fan rotates at full speed, and when fan also fails, then controller performs complete machine reset operation.
Compared with prior art, the present invention has advantages below：The present invention can be effectively according to the real-time temperature of equipment
Spend dynamically to adjust the size that fan exports wind-force, so as to efficiently utilize electric energy, save the energy；On the other hand failure is passed through
Detection can effectively improve the reliability of fan.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for specification, the reality with the present invention
Apply example to be used for explaining the present invention together, be not construed as limiting the invention.
Fig. 1 is a kind of control principle block diagram of intelligent fan of the present invention.
Fig. 2 is the circuit theory diagrams of the voltage regulation unit of the present invention.
Fig. 3 is a kind of control flow chart of intelligent fan of the present invention.
Main element symbol description
Controller 100
Temperature sensor 200
Logic control element 300
Voltage regulation unit 400
On-off circuit 500
Speed electric output end 410
Embodiment
To make the purpose, technical scheme and advantage of embodiment of the present invention clearer, below in conjunction with present invention implementation
Accompanying drawing in mode, the technical scheme in embodiment of the present invention is clearly and completely described.
In the description of the invention, it is necessary to illustrate, herein, such as first and second or the like relational terms
It is used merely to make a distinction an entity or operation with another entity or operation, and not necessarily requires or imply these
There is any this actual relation or order between entity or operation.Moreover, term " comprising ", "comprising" or its is any
Other variants are intended to including for nonexcludability, so that process, method, article or equipment including a series of key elements
Not only include those key elements, but also other key elements including being not expressly set out, or also include being this process, side
Method, article or the intrinsic key element of equipment.In the absence of more restrictions.By sentence, " including one ... limits
Key element, it is not excluded that also there is other identical element in the process including the key element, method, article or equipment ".
The correlation module being related in the system is hardware system module or is prior art Computer Software journey
The functional module that sequence or agreement are combined with hardware, computer software programs or agreement involved by the functional module itself
The technology being well known to those skilled in the art, it is not the improvements of the system；The system is improved between each module
Interaction relationship or annexation, be that the overall construction of system is improved, to be solved with solving the system
Relevant art problem.
Specific introduce is made to a kind of intelligent fan of the present invention below in conjunction with drawings and embodiments.
Refer to accompanying drawing 1-3, a kind of intelligent fan, for being radiated to default equipment, including fan body, controller
100th, temperature sensor 200, logic control element 300, voltage regulation unit 400；
The controller 100 is connected with the temperature sensor 200, and the temperature sensor 200 is arranged at the equipment
Temperature highest position, the real time temperature for obtaining the equipment, it is preferred that the temperature sensor 200 uses LM75；Institute
State controller 100 and realize stepless speed regulation and fault detect for performing the intelligent control of the fan body, can be by various types
Number CPU realize, such as the PowerPC series of Freescale.
The voltage regulation unit 400 include voltage adjuster U1, first resistor R1, second resistance R2, the first inductance L1,
Second electric capacity C2, the 4th electric capacity C4；The voltage adjuster U1 be the adjustable DC-DC chips of output voltage, including feedback end FB,
Output end LX, Enable Pin EN；The Enable Pin EN of the voltage adjuster U1 is connected with the logic control element 300；The control
Device 100 processed controls the opening and closing of the voltage regulation unit 400 by the logic control element 300；In the present embodiment,
It is preferred that the logic control element 300 use the logic chip based on CPLD, the opening and closing of the voltage adjuster U1
It is to be realized by the controller 100 to write CPLD internal register.
Connect the first inductance L1 between the output end LX of the voltage adjuster U1 and speed electric output end 410,
Connect the second electric capacity C2 between the speed electric output end 410 and ground terminal, constitutes LC filter circuits；The speed electric
The first resistor R1 and second resistance R2, and the first resistor R1 and second are sequentially connected in series between output end 410 and ground terminal
Resistance R2 tie point is connected with the feedback end FB of the voltage adjuster U1；The 4th electric capacity C4 and first resistor R1
It is in parallel；The second resistance R2 is negative tempperature coefficient thermistor, is arranged on the device temperature highest position；The speed governing
Voltage output end 410 connects the power end of the fan body.Between the COMP ends of the voltage adjuster U1 and ground terminal successively
Connect 3rd resistor R3 and the 3rd electric capacity C3, sets the switching frequency of the voltage adjuster U1；Power input VIN connections are straight
Flow power supply VIN, and the first electric capacity C1 that connects between ground terminal；Output voltage Vout=Vin* (the 1+ of the voltage adjuster U1
R1/R2), when the device temperature is raised, R2 resistance will reduce so that the output voltage Vout of the voltage adjuster U1 increases
Plus, the rotation speed of the fan increase；When device temperature reduction, R2 resistance will increase so that the voltage adjuster U1's
Output voltage Vout reduces, and the rotation speed of the fan reduces.The present embodiment is when it is implemented, the equipment is risen after machine, in boot ranks
Section, the controller 100 detects whether the fan is normal, and main program is entered if normal, and the controller 100 is monitored in real time
The real time temperature of the equipment, when temperature is less than threshold temperature, the controller 100 passes through the logic control element 300
Close the voltage adjuster U1 so that fan is stalled；When temperature is higher than the threshold temperature, then the voltage adjustment is opened
Device U1, according to the feedback adjustment voltage output of the negative tempperature coefficient thermistor, so as to realize the stepless speed regulation of fan.This reality
Apply in example, it is preferred that the threshold voltage is -10 DEG C of the maximum operating temperature of the equipment, in the present embodiment, the threshold value electricity
Press as 30 DEG C.In order to more preferably obtain suitable feedback resistance, it is preferred that the second resistance R2 is using thermistor and common electricity
Resistance connection in series-parallel is formed, wherein, the selection of thermistor and conventional, electric-resistance, the " device temperature-fan turn to be obtained according to Thermal test
Relation between speed-voltage adjuster output voltage-feedback resistance resistance " four is determined.
Further, in preferred embodiments of the present invention, the fan body includes status pin, with the logic control
Unit 300 processed is connected, and the rotating speed of the fan is detected by the logic control element 300.When turn for detecting the fan
When speed is 0, then the controller 100 is advertised in the way of interruption.
Further, in preferred embodiments of the present invention, in addition to on-off circuit 500, for selecting the fan sheet
The input voltage of the power end of body, the power end of the fan body can select to connect the speed electric output end 410, root
Stepless speed regulation is realized according to the change of temperature, also may be selected to be directly connected to dc source, allows the fan to rotate at full speed.The present embodiment
In, it is preferred that the on-off circuit 500 includes single-pole double-throw relay K1；The normally opened end of the single-pole double-throw relay K1 connects
Meet dc source VIN, the normal-closed end connection speed electric output end 410, the power end of the common port connection fan body；
The controller 100 controls the single-pole double-throw relay K1 by the logic control element 300.When it is implemented, just
The power end of the fan body connects the speed electric output end 410 during normal service condition, when the controller 100 is received
The real time temperature of the equipment is read while stalling information to the fan, if the real time temperature of the equipment reaches setting
Threshold temperature when, then judge that the voltage regulation unit 400 breaks down, now the controller 100 passes through the logic
Control unit 300 controls the single-pole double-throw relay K1, the power end of the fan body is connected to the dc source
VINSo that the fan is rotated at full speed.Further, it can detect whether the fan rotates at full speed, if fan also fails,
Then the controller 100 performs complete machine reset operation.
Further, in other embodiments, the on-off circuit 500 includes the first triode, the second triode；It is described
The emitter stage connection dc source V of first triodeIN, the power end of the colelctor electrode connection fan body；Two or three pole
The emitter stage of pipe connects the speed electric output end 410, and colelctor electrode connects the power end of the fan body；The controller
100 control first triode and the second triode by the logic control element 300.When it is implemented, normally making
Used time, control second triode ON, the first triode cut-off, the power end connection tune of the fan body
Fast voltage output end 410.The real-time of the equipment is read while the controller 100 receives the fan stalling information
Temperature, if the real time temperature of the equipment reaches the threshold temperature of setting, judges that the voltage regulation unit 400 occurs
Failure, now the controller 100 first triode ON, described second are controlled by the logic control element 300
Triode ends, and the power end of the fan body is connected to the dc source VINSo that the fan is rotated at full speed.
Further, in preferred embodiments of the present invention, the controller 100 connects control platform, for by information
Feed back to user.After the equipment plays machine, when the controller 100 detects that the fan is abnormal, the control can be passed through
Platform processed feeds back to user；During operation, when detecting the failure of voltage regulation unit 400, the control can also be passed through
Platform processed informs user.
Further, in preferred embodiments of the present invention, the logic control element 300 is the logic core based on CPLD
Piece.
The control method of a kind of speed regulating control of intelligent fan in accordance with the above and failure detector, including following step
Suddenly：
S1, in the boot stages, whether detection fan is normal, abnormal normally then into step S2, hangs over the boot stages；
S2, controller 100 monitors the operating temperature of the equipment in real time；
S3, when the operating temperature of equipment is less than threshold temperature, the controller 100 passes through the logic control element
300 close the voltage adjuster U1 so that fan is stalled；When temperature is optionally greater than the threshold temperature, then open described
Voltage adjuster U1, fan is started working, and stepless speed regulation is realized by the negative tempperature coefficient thermistor.
A kind of control method in accordance with the above, the status pin of the fan body connects the logic control element
300, the rotating speed for detecting fan；Also include on-off circuit 500, the input electricity of the power end for selecting the fan body
Pressure；The on-off circuit 500 includes single-pole double-throw relay K1；The normally opened end connection direct current of the single-pole double-throw relay K1
Source VIN, the normal-closed end connection speed electric output end 410, the power end of the common port connection fan body；The hilted broadsword
Double-throw relay K1 is controlled by the controller 100 by the logic control element 300, and the control method also includes
Following steps：
S4, when the controller 100 receives the stalling information of fan, while reading the current real-time temperature of the equipment
Degree；
S5, when the operating temperature of equipment is optionally greater than the threshold temperature, the controller 100 passes through the logic control
Unit 300 processed controls the on-off circuit 500, directly by dc source VINLead to fan power supply end so that fan is rotated at full speed；
Whether S6, detection fan rotates at full speed, and when fan also fails, then controller 100 performs complete machine reset operation；Work as wind
Fan is rotated at full speed, then failure is fed back into user by the control platform.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements done etc. should be included within the scope of protection of the invention.
Claims (10)
1. a kind of intelligent fan, for being radiated to default equipment, it is characterised in that including fan body, controller, temperature
Sensor, logic control element, voltage regulation unit；
The controller is connected with the temperature sensor, the real time temperature for obtaining the equipment；
The controller controls the opening and closing of the voltage regulation unit by the logic control element；
The voltage regulation unit includes voltage adjuster, first resistor, second resistance, the first inductance, the second electric capacity, the 4th electricity
Hold；The voltage adjuster is the adjustable DC-DC chips of output voltage, including feedback end FB, output end LX, Enable Pin EN；Institute
The Enable Pin EN for stating voltage adjuster is connected with the logic control element；
Connected between the output end LX of the voltage adjuster and speed electric output end first inductance；The speed electric
Connected between output end and ground terminal second electric capacity；Described first is sequentially connected in series between the speed electric output end and ground terminal
Resistance and second resistance, and the feedback end FB companies of the tie point of the first resistor and second resistance and the voltage adjuster
Connect；4th electric capacity is in parallel with the first resistor；The second resistance is negative tempperature coefficient thermistor；The speed governing electricity
Output end is pressed to connect the power end of the fan body.
It is and described 2. intelligent fan according to claim 1, it is characterised in that the fan body includes status pin
Logic control element is connected, the rotating speed for detecting fan.
3. intelligent fan according to claim 2, it is characterised in that also including on-off circuit, for selecting the fan
The input voltage of the power end of body.
4. intelligent fan according to claim 3, it is characterised in that the on-off circuit includes single-pole double-throw relay；
The normally opened end connection dc source of the single-pole double-throw relay, normal-closed end connects the speed electric output end, and common port connects
Connect the power end of the fan body；The controller controls the single-pole double-throw relay by the logic control element.
5. intelligent fan according to claim 3, it is characterised in that the on-off circuit includes the first triode, second
Triode；The emitter stage connection dc source of first triode, colelctor electrode connects the power end of the fan body；It is described
The emitter stage of second triode connects the speed electric output end, and colelctor electrode connects the power end of the fan body；It is described
Controller controls first triode and the second triode by the logic control element.
6. intelligent fan according to claim 1, it is characterised in that the controller connects control platform, for that will believe
Breath feeds back to user.
7. intelligent fan according to claim 1, it is characterised in that the logic control element is the logic based on CPLD
Chip.
8. intelligent fan according to claim 1, it is characterised in that the temperature sensor uses LM75.
9. a kind of control method of intelligent fan according to claim 1, it is characterised in that comprise the following steps：
S1, in the boot stages, whether detection fan is normal, abnormal normally then into step S2, hangs over the boot stages；
S2, controller monitors the real time temperature of the equipment in real time；
S3, when the operating temperature of equipment is less than threshold temperature, the controller is closed described by the logic control element
Voltage adjuster so that fan is stalled；When temperature is optionally greater than the threshold temperature, then the voltage adjuster, wind are opened
Fan is started working, and stepless speed regulation is realized by the negative tempperature coefficient thermistor.
10. a kind of control method according to claim 9, it is characterised in that the status pin connection institute of the fan body
Logic control element is stated, the rotating speed for detecting fan；Also include on-off circuit, the power end for selecting the fan body
Input voltage；The on-off circuit includes single-pole double-throw relay；The normally opened end connection direct current of the single-pole double-throw relay
Power supply, normal-closed end connects the speed electric output end, and common port connects the power end of the fan body；The single-pole double throw
Relay is controlled by the controller by the logic control element, and the control method is further comprising the steps of：
S4, when the controller receives the stalling information of fan, while reading the present real-time temperature of the equipment；
S5, when the operating temperature of equipment is optionally greater than the threshold temperature, the controller passes through the logic control element
The on-off circuit is controlled, dc source is directly led into fan power supply end so that fan is rotated at full speed；
Whether S6, detection fan rotates at full speed, and when fan also fails, then controller performs complete machine reset operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710284472.8A CN107035706B (en) | 2017-04-25 | 2017-04-25 | A kind of intelligent fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710284472.8A CN107035706B (en) | 2017-04-25 | 2017-04-25 | A kind of intelligent fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107035706A true CN107035706A (en) | 2017-08-11 |
| CN107035706B CN107035706B (en) | 2019-05-28 |
Family
ID=59536041
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710284472.8A Expired - Fee Related CN107035706B (en) | 2017-04-25 | 2017-04-25 | A kind of intelligent fan |
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| Country | Link |
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| CN (1) | CN107035706B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120368A (en) * | 2020-01-18 | 2020-05-08 | 东莞市奇芳电气有限公司 | Energy-saving control fan |
| CN111945387A (en) * | 2020-07-31 | 2020-11-17 | 青岛海尔滚筒洗衣机有限公司 | Drive module and washing machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141624A (en) * | 2014-07-25 | 2014-11-12 | 北京机械设备研究所 | Stepless speed regulation circuit for fan |
| CN204200638U (en) * | 2014-10-11 | 2015-03-11 | 上海坤地机电科技有限公司 | There is the driver circuit for controlling speed of fan of automatic regulation function |
| CN204721265U (en) * | 2015-05-25 | 2015-10-21 | 福建农林大学 | Based on the DC motor speed automatic regulating equipment of DS18B20 temperature sensor |
-
2017
- 2017-04-25 CN CN201710284472.8A patent/CN107035706B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141624A (en) * | 2014-07-25 | 2014-11-12 | 北京机械设备研究所 | Stepless speed regulation circuit for fan |
| CN204200638U (en) * | 2014-10-11 | 2015-03-11 | 上海坤地机电科技有限公司 | There is the driver circuit for controlling speed of fan of automatic regulation function |
| CN204721265U (en) * | 2015-05-25 | 2015-10-21 | 福建农林大学 | Based on the DC motor speed automatic regulating equipment of DS18B20 temperature sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120368A (en) * | 2020-01-18 | 2020-05-08 | 东莞市奇芳电气有限公司 | Energy-saving control fan |
| CN111945387A (en) * | 2020-07-31 | 2020-11-17 | 青岛海尔滚筒洗衣机有限公司 | Drive module and washing machine |
| CN111945387B (en) * | 2020-07-31 | 2023-12-05 | 重庆海尔滚筒洗衣机有限公司 | Driving module and washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107035706B (en) | 2019-05-28 |
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