CN108488079A - Device for controlling rotation speed of the fan - Google Patents
Device for controlling rotation speed of the fan Download PDFInfo
- Publication number
- CN108488079A CN108488079A CN201810166750.4A CN201810166750A CN108488079A CN 108488079 A CN108488079 A CN 108488079A CN 201810166750 A CN201810166750 A CN 201810166750A CN 108488079 A CN108488079 A CN 108488079A
- Authority
- CN
- China
- Prior art keywords
- fan
- babinet
- moving block
- water
- nozzle
- Prior art date
- 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.)
- Granted
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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
- F04D25/04—Units comprising pumps and their driving means the pump being fluid-driven
- F04D25/045—Units comprising pumps and their driving means the pump being fluid-driven the pump wheel carrying the fluid driving means, e.g. turbine blades
-
- 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
- F04D27/004—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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5853—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps heat insulation or conduction
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of devices for controlling rotation speed of the fan,Including babinet,Flabellum is equipped with outside babinet,Flabellum is equipped with the rotation axis for being located at that babinet is outer and is connect with body pivot,The bottom of box is equipped with water tank,Water tank is equipped with water-supply-pipe,Water pump is equipped in water-supply-pipe,The branch pipe of babinet is stretched into there are two being set on water-supply-pipe,First fan and the second fan include the first moving block,First rotating shaft,Second shaft and three screw blades in hollow structure,Screw blade is equipped with the evaporation layer towards air inlet hole,Three screw blade one end are arranged on the first moving block,First moving block side is arranged in the second shaft,The first moving block other side is arranged in first rotating shaft,Three screw blade other ends are equipped with can be towards the inlet opening of nozzle,First rotating shaft positioned at the first fan is equipped with pinion,Rotation axis is equipped with the master gear engaged with pinion.Increase the humidity of extraneous air, and reduces extraneous temperature.
Description
Technical field
The invention belongs to the technical field of computer fittings, more particularly to a kind of devices for controlling rotation speed of the fan.
Background technology
In the server, fan rate controlling function is an important function, is usually controlled equipped with substrate management
It is that fan rate controlling is carried out by the baseboard management controller on motherboard in the server of device, it is that basis is preset in base
Temperature that fan speed control table in board management controller and the temperature-sensitive sticker being located on motherboard are sensed controls service
Rotation speed of the fan in device.
In addition, the setting of fan speed control table needs while weighing following element：To meet certain level first
Cooling requirements, i.e., after startup of server, will not make because of temperature overheating the central processing unit being configured in server or
Other equipment can not work normally.Noise is followed by reduced, that is, reduces the noise generated due to the quick rotation of fan.Furthermore
For the power consumption for reducing needed for driving fan operation.However, above-mentioned each element mutually restricts, if heat dissipation performance required
Height must then improve rotation speed of the fan, in this way, can then lead to the raising of noise and the increase of power consumption；If to reducing noise
It is required that it is excessively high, then rotation speed of the fan must be reduced, in this way, heat dissipation performance can be then influenced, and also user can't directly control
The rotating speed of fan.
Invention content
The invention is intended to provide a kind of device for controlling rotation speed of the fan that can be balanced heat dissipation but also reduce noise.
In order to achieve the above objectives, basic technology scheme of the invention is as follows：Device for controlling rotation speed of the fan, including case
Body, the babinet outside are equipped with flabellum, and the flabellum is equipped with turn for being located at that the babinet is outer and is connect with the body pivot
Moving axis, sets that there are two fans arrange along the babinet central shaft in the babinet, and the bottom of box is equipped with water tank, the water
Case is equipped with water-supply-pipe, and water pump be connected to the water-supply-pipe is equipped in the water tank, set on the water-supply-pipe there are two stretch into
The branch pipe of the babinet, the branch tube end are equipped with the nozzle towards two fans, and the babinet side is equipped with several
Towards the fan air inlet hole, the babinet other side is equipped with several air outlets towards the flabellum, two fans
The first fan and the second fan positioned at the lower box for being respectively located at the babinet top, first fan and the
Two fans include the first moving block, first rotating shaft, the second shaft and three screw blades in hollow structure, the propeller
Leaf is equipped with the evaporation layer towards the air inlet hole, and three described screw blade one end are each attached on first moving block,
First moving block side is fixed in the second shaft, and first moving block other side is fixed in first rotating shaft, three
The screw blade other end, which is equipped with, to be set in the first rotating shaft of first fan towards the inlet opening of the nozzle
There are pinion, the rotation axis to be equipped with the master gear engaged with the pinion.
The principle and advantageous effect of this programme are：
1, in order to solve the technical issues of fan speed control table generates excessive power consumption, this programme is sprayed by the clear water in water tank
It is mapped to fan, drives fan to rotate using the flow velocity of water, and then drive first rotating shaft rotation, pinion to drive main tooth by fan
Wheel rotation so that flabellum rotates, and need not additionally use power equipment, therefore, during flabellum rotates, not will produce power consumption
The phenomenon that；Its effect principle is：First, artificially starting water pump, the clear water in water tank is introduced into water-supply-pipe by water pump,
Secondary, the clear water in water-supply-pipe enters nozzle along branch pipe, and clear water is ejected into the screw blade of fan by nozzle, drives propeller
Leaf rotates, and screw blade drives first rotating shaft rotation, the pinion rotation in first rotating shaft, since pinion and master gear are nibbled
It closes, therefore, master gear rotation drives rotation axis rotation, and then drives flabellum rotation, and the power of flabellum rotation is carried by clear water
For, therefore, the unused power equipment of whole process.
2, in order to solve noise by fan speed control table and then the technical issues of bring the thermal diffusivity of flabellum, this programme passes through
Evaporation layer reduce the temperature of server internal；Its effect principle is：When the first fan and the second fan rotate, can lead to
It crosses air inlet hole and absorbs hot-air in a large amount of computer box, the clear water of nozzle injection can soak evaporation layer, and hot-air enters steaming
It sends out in layer, is absorbed heat to hot-air by evaporation layer, the clear water on evaporation layer is evaporated generation vaporization phenomenon, and pass through
Vapor after vaporization is discharged into the external world by screw blade by exhaust vent, increases the humidity of extraneous air, and is reduced outer
The temperature on boundary.
3, rotating speed is improved in order to solve flabellum, thus the technical problem for causing flabellum noise excessive, this programme pass through clear water
Enter the rotating speed of the amount control flabellum in fan；Its effect principle is：With the propeller of the first fan and the second fan
In leaf rotation process, when nozzle injection clear water can excessively be entered in screw blade by the inlet opening of screw blade, increase
The weight of screw blade, when the clear water impact force of nozzle injection is gradually reduced, screw blade rotating speed can slow down gradually, and drive the
One shaft velocity of rotation slows down, and then controls the rotating speed of flabellum, when clear water is very few enters screw blade, screw blade rotating speed
Soon so that flabellum also rotating speed block.
Further, the first rotating shaft for being located at second fan is equipped with first bevel gear, is equipped with below the rotation axis
The second bevel gear engaged with the first bevel gear, the second bevel gear is interior to be equipped with rotating bar, and the rotating bar top is set
There is the wet cotton block being in contact with the rotation axis.So that the first rotation axis on first bevel gear rotation, due to first bevel gear with
Second bevel gear engages, and therefore, first bevel gear drives second bevel gear rotation, and then the rotation of vertical direction is converted into level
The rotation in direction, second bevel gear drive rotating bar rotation, and the wet cotton block at the top of rotating bar also and then rotates, the process of rotation
In, rotation axis surface is cleaned.During the first fan and the second fan constantly rotate so that rotation axis and wet cotton
Block relatively rotates, and the vapor discharged from exhaust vent, and a small amount of vapor can be absorbed by wet cotton block, if wet cotton block is absorbed
Vapor it is excessive, just have water droplet and dripped from wet cotton block, can determine whether that the clear water dosage in water tank is excessive, if wet cotton block is inhaled
The vapor of receipts is very few, and wet cotton block itself just has and can do, and the friction that can be generated with rotation axis is excessive, can send out sound of ripping, tittering, frying, burning, etc sound
Sound can determine whether that the clear water dosage in water tank is very few.
Further, the tank top offers several through-holes.When the clear water of nozzle injection sprays down from top to bottom
When, it is entered in water tank by the through-hole of water tank, clear water is introduced into branch pipe further through the water pump of water tank, recycled.
Further, further include the second moving block, the rotation axis is connect with second moving block, the flabellum with it is described
Second moving block connects.Rotation axis drives flabellum rotation by the second moving block, and the second moving block, which can facilitate, transmits rotation axis
On active force to flabellum.
Further, the branch pipe includes the first branch pipe and the second branch pipe below first branch pipe, the nozzle
Including be arranged the top of the box the first nozzle and the second nozzle in the wall box is set, first nozzle with
The first branch pipe connection, second nozzle are connected to second branch pipe.Since the first branch pipe is located at the upper of the second branch pipe
Side, therefore, the clear water in water-supply-pipe first flows into the second branch pipe, and the second fan is driven to rotate first, and secondly, clear water flows into
First branch pipe drives the rotation of the first fan.
Further, the evaporation layer is CELdek wet curtains.CELdek wet curtains are by the fibrous paper of addition special chemical raw material
Slurry is processed into undulatory fibrous paper, made of stickup.It has good hygroscopicity and wet stiffening property (soak tall and straight degree),
Its chemical composition will not with flow, air-flow effect and decompose.
Description of the drawings
Fig. 1 is the structural schematic diagram of device embodiment of the present invention for controlling rotation speed of the fan；
Fig. 2 is the sectional view for the device that Fig. 1 is used to control rotation speed of the fan.
Specific implementation mode
Below by the further details of explanation of specific implementation mode：
Reference numeral in Figure of description includes：Babinet 1, screw blade 2, first rotating shaft 3, water tank 4, water pump 5, first
Branch pipe 6, the second branch pipe 7, the first nozzle 8, the second nozzle 9, inlet opening 10, evaporation layer 11, the second shaft 12, the first moving block
13, pinion 14, master gear 15, rotation axis 16, the second moving block 17, air inlet hole 18, exhaust vent 19, first bevel gear 20,
Two bevel gears 21, rotating bar 22, wet cotton block 23.
Explanation：Being subject to up and down in attached drawing up and down in the present embodiment.
Embodiment is substantially as shown in Fig. 1：Device for controlling rotation speed of the fan, including babinet 1 are equipped in babinet 1
Two fans arranged under upper along 1 central shaft of babinet, the fan are divided into the first fan and the second fan, the first fan position
In the top of babinet 1, the second fan is located at the lower part of babinet 1, and 1 bottom of babinet is equipped with water tank 4, and water tank 4 is trepanning case, water tank
Offer multiple through-holes on 4, be with hole on water tank 4, for by extraneous clear water by being introduced into water tank 4 into hole, water tank 4
Left side is equipped with the water-supply-pipe being connected to water tank 4, and water pump 5 is equipped in water tank, and 6 He of the first branch pipe is separately installed on water-supply-pipe
Second branch pipe 7, the first branch pipe 6 are located at the top of the second branch pipe 7, and the first branch pipe 6 is stretched into from 1 top of babinet in babinet 1, second
Pipe 7 is stretched into from the left side of babinet 1 in babinet 1, is equipped with the first nozzle 8 on the first branch pipe 6, and the first nozzle 8 is towards the first fan
Top, is equipped with the second nozzle 9 on the second branch pipe 7, and the second nozzle 9 is towards the left of the second fan, first fan and second
Fan includes first rotating shaft 3.
As shown in Fig. 2, first fan and the second fan include the second shaft 12 and three screw blades 2, screw blade 2
In hollow structure, inlet opening 10 is offered on 2 outside of screw blade, 2 inside of screw blade is mounted on the first moving block 13, the
Two shafts, 12 right end is mounted on 13 left side of the first moving block, and for the setting of 12 left end of the second shaft in 1 left side of babinet, first rotating shaft 3 is left
End is mounted on 13 right side of the first moving block, and the setting of 3 right end of first rotating shaft is on 1 right side of babinet.12 are offered on 1 left side of babinet
Air inlet hole 18, babinet offer 10 exhaust vents 19 on 1 right side, are mounted on each screw blade 2 towards air inlet hole 18
Evaporation layer 11, the evaporation layer 11 use CELdek wet curtains, and CELdek wet curtains are added by the fibre pulp of addition special chemical raw material
The corrugated fibrous paper of work, made of stickup.It has good hygroscopicity and wet stiffening property (soak tall and straight degree), changes
Study point will not with flow, air-flow effect and decompose.
It is externally provided in babinet 1 and is relatively set with the second moving block 17 with exhaust vent 19, fan is installed on the second moving block 17
Leaf, the flabellum are the existing flabellum using in computer fan, and rotation axis 16, rotation axis 16 are equipped in 17 left end of the second moving block
It is rotatably connected on outside babinet 1, master gear 15 is installed in rotation axis 16, master gear 15 top is equipped with engages with master gear 15
Pinion 14, pinion 14 are mounted in the first rotating shaft 3 of the first fan, and 15 lower section of master gear is equipped with first bevel gear 20, the
One bevel gear 20 is mounted in the first rotating shaft 3 of the second fan, and 20 right end of first bevel gear is equipped with and is engaged with first bevel gear 20
Second bevel gear 21, rotating bar 22 is installed, 22 top of rotating bar is equipped with wet cotton block 23, wet cotton block in second bevel gear 21
23 are located at 16 lower section of rotation axis, and are in contact with rotation axis 16.
Clear water will be filled in water tank 4 in advance, artificial to start water pump 5, the clear water in water tank 4 is introduced into water-supply-pipe by water pump 5
It is interior, the first branch pipe 6 and the second branch pipe 7 are flowed up to by water-supply-pipe respectively, since the first branch pipe 6 is located at the second branch pipe 7
Top, therefore, the clear water in water-supply-pipe first flow into the second branch pipe 7, will be clear by the second nozzle 9 on the second branch pipe 7
Water sprays on the screw blade 2 of the second fan, and the impact force of clear water makes the screw blade 2 of the second fan rotate, and drives second
Fan rotates, and the second fan drives the first moving block 13 rotation on the second fan, be located at the first rotation during rotation
The first rotating shaft 3 of 13 left and right end portions of block and the second shaft 12 follow the first moving block 13 to rotate and rotate, further so that first
First bevel gear 20 in rotation axis 16 rotates, since first bevel gear 20 is engaged with second bevel gear 21, the first cone tooth
Wheel 20 drives second bevel gear 21 to rotate, and then the rotation for being converted into horizontal direction of vertical direction, second bevel gear 21
Rotating bar 22 is driven to rotate, the wet cotton block 23 at 22 top of rotating bar also and then rotates, during rotation, to 16 surface of rotation axis
It is cleaned.
Secondly, the clear water in water-supply-pipe is flowed into the first branch pipe 6, by the first nozzle 8 on the first branch pipe 6 by clear water
It sprays on the screw blade 2 of the first fan so that the screw blade 2 of the first fan rotates, and the rotation of the first fan is driven, first
During fan rotates, since the first rotating shaft 3 of 13 left and right end portions of the first moving block and the second shaft 12 follow the first rotation
Block 13 is rotated and is rotated, therefore so that and the pinion 14 in first rotating shaft 3 rotates, since pinion 14 is engaged with master gear 15,
Therefore, pinion 14 drives master gear 15 to rotate, and master gear 15 drives rotation axis 16 to rotate, and rotation axis 16 drives the second moving block
17 rotations, and then drive flabellum rotation so that flabellum generates wind-force and blows outward.
In above process, in 2 rotation process of screw blade of the first fan and the second fan, 8 He of the first nozzle
The clear water of second nozzle 9 injection can be entered by the inlet opening 10 of screw blade 2 in screw blade 2 on a small quantity, increase propeller
The weight of leaf 2.When 2 weight of screw blade gradually increases, the clear water impact force of the first nozzle 8 and the injection of the second nozzle 9 is kept
Constant, still, 2 velocity of rotation of screw blade will slow down gradually.Before, when the first fan and the second fan rotate, can lead to
It crosses air inlet hole 18 and absorbs hot-air in a large amount of computer box, the clear water of the first nozzle 8 and the injection of the second nozzle 9 can soak evaporation
Layer 11, hot-air enters in evaporation layer 11, is absorbed heat to hot-air by evaporation layer 11, since 2 rotating speed of screw blade subtracts
Slowly, increase evaporation layer 11 to absorb heat the time to hot-air, the clear water on evaporation layer 11 is evaporated generation vaporization phenomenon, and pass through
Moisture discharge after vaporization to the external world is increased the humidity of extraneous air by the exhaust vent 19 of screw blade 2, and is reduced outer
The temperature on boundary.
On the other hand, during the first fan and the second fan constantly rotate so that rotation axis 16 and wet cotton block 23
The vapor for relatively rotating, and being discharged from exhaust vent 19, a small amount of vapor can be absorbed by wet cotton block 23, if 23 institute of wet cotton block
The vapor of absorption is excessive, just has water droplet and is dripped from wet cotton block 23, can determine whether that the clear water dosage in water tank 4 is excessive, if wet
The vapor that cotton block 23 is absorbed is very few, and wet cotton block 23 itself is relatively dry, and the friction that can be generated with rotation axis 16 is excessive, meeting
Sound of ripping, tittering, frying, burning, etc sound is sent out, can determine whether that the clear water dosage in water tank 4 is very few.
Above-described is only the embodiment of the present invention, and the common sense such as well known concrete structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these should also be considered as protection scope of the present invention, these all do not interfere with what the present invention was implemented
Effect and patent practicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as specific implementation mode can be used for explaining the content of claim.
Claims (6)
1. the device for controlling rotation speed of the fan, it is characterised in that：Including babinet, flabellum, the fan are equipped with outside the babinet
There are two along the case equipped with being set in the rotation axis that the babinet is outer and is connect with the body pivot, the babinet for leaf
The fan of body central shaft arrangement, the bottom of box are equipped with water tank, and the water tank is equipped with water-supply-pipe, be equipped in the water tank with
The water pump of water-supply-pipe connection is set there are two the branch pipe for stretching into the babinet on the water-supply-pipe, and the branch tube end is equipped with
Towards the nozzle of two fans, the babinet side is equipped with several air inlet holes towards the fan, and the babinet is another
Side is equipped with several air outlets towards the flabellum, and two fans are respectively the first wind positioned at the babinet top
Fan and the second fan positioned at the lower box, first fan and the second fan include the first moving block, first turn
Axis, the second shaft and three screw blades in hollow structure, the screw blade are equipped with the evaporation towards the air inlet hole
Layer, three described screw blade one end are each attached on first moving block, and first moving block side is fixed on second
In shaft, first moving block other side is fixed in first rotating shaft, and three screw blade other ends are equipped with can court
To the inlet opening of the nozzle, the first rotating shaft for being located at first fan is equipped with pinion, the rotation axis be equipped with
The master gear of the pinion engagement.
2. the device according to claim 1 for controlling rotation speed of the fan, it is characterised in that：Positioned at second fan
First rotating shaft is equipped with first bevel gear, and the second bevel gear engaged with the first bevel gear is equipped with below the rotation axis,
Rotating bar is equipped in the second bevel gear, the rotating bar top is equipped with the wet cotton block being in contact with the rotation axis.
3. the device according to claim 1 for controlling rotation speed of the fan, it is characterised in that：The tank top offers
Several through-holes.
4. the device according to claim 1 for controlling rotation speed of the fan, it is characterised in that：Further include the second moving block,
The rotation axis is connect with second moving block, and the flabellum is connect with second moving block.
5. the device according to claim 1 for controlling rotation speed of the fan, it is characterised in that：The branch pipe includes first
Pipe and the second branch pipe below first branch pipe, the nozzle include be arranged the top of the box the first nozzle and
The second nozzle in the wall box is set, and first nozzle is connected to first branch pipe, second nozzle and institute
State the connection of the second branch pipe.
6. the device according to claim 1 for controlling rotation speed of the fan, it is characterised in that：The evaporation layer is CELdek
Wet curtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810166750.4A CN108488079B (en) | 2018-02-28 | 2018-02-28 | For controlling the device of rotation speed of the fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810166750.4A CN108488079B (en) | 2018-02-28 | 2018-02-28 | For controlling the device of rotation speed of the fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108488079A true CN108488079A (en) | 2018-09-04 |
| CN108488079B CN108488079B (en) | 2019-08-20 |
Family
ID=63341132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810166750.4A Active CN108488079B (en) | 2018-02-28 | 2018-02-28 | For controlling the device of rotation speed of the fan |
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| Country | Link |
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| CN (1) | CN108488079B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302970A (en) * | 2020-11-02 | 2021-02-02 | 张善庆 | Hydraulic control folding fire-fighting fan |
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| CN104454117A (en) * | 2014-11-27 | 2015-03-25 | 奇瑞商用车（安徽）有限公司 | Automobile engine cooling fan blade rotating speed control system and method |
| CN204591707U (en) * | 2015-04-20 | 2015-08-26 | 马存亿 | Water wheel fan used for cooling tower |
| CN106989045A (en) * | 2017-06-09 | 2017-07-28 | 郑州云海信息技术有限公司 | A kind of data center's water cooling unit cabinet PWM control methods |
| CN206889303U (en) * | 2017-07-11 | 2018-01-16 | 象山建乐电器有限公司 | Multifunctional fan |
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| CN112302970A (en) * | 2020-11-02 | 2021-02-02 | 张善庆 | Hydraulic control folding fire-fighting fan |
| CN112302970B (en) * | 2020-11-02 | 2021-08-13 | 德州福莱特环保科技有限公司 | Hydraulic control folding fire-fighting fan |
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