CN208073836U - A kind of wind turbine - Google Patents
A kind of wind turbine Download PDFInfo
- Publication number
- CN208073836U CN208073836U CN201820465693.5U CN201820465693U CN208073836U CN 208073836 U CN208073836 U CN 208073836U CN 201820465693 U CN201820465693 U CN 201820465693U CN 208073836 U CN208073836 U CN 208073836U
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- shutter
- motor
- blade
- wind turbine
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Abstract
The utility model provides a kind of wind turbine, including：Casing, fan, transmission shaft, motor and monitoring system, fan, transmission shaft, motor and monitoring system are all located in casing, and fan is connect by transmission shaft with casing, and motor passes through belt and transmission axis connection；The side far from transmission shaft is provided with shutter on casing；Monitoring system includes that detection unit, control unit and shutter adjust unit, shutter adjusts unit and is connect with shutter, detection unit is used to detect the rotating speed of indoor environmental information and/or motor, control unit is used to generate first control signal according to the rotating speed of environmental information and/or motor, and shutter adjusts the working condition that unit is used to adjust the blade of shutter according to first control signal.Wind turbine i.e. provided by the utility model can control the working condition of the blade of shutter according to indoor environmental information and/or the rotating speed of motor so that wind turbine is more intelligent, is effectively improved the performance of wind turbine.
Description
Technical field
The utility model is related to ventilation equipment technical field more particularly to a kind of wind turbines.
Background technology
Wind turbine is a kind of instrument of conveying gas, various shapes and the wind turbine of principle exists in the prior art, to protect wind
The devices such as fan, motor inside machine, and the normal use of wind turbine is not influenced, it will usually it is set towards outdoor side in wind turbine
Shutter is set, when wind turbine needs air draft, it is only necessary to which ventilation can be realized by opening the blade of shutter.Wind in the prior art
Machine is to generate blowing when driving fan rotation by motor, blows the blade of shutter open, to realize the opening of blade of louver window,
This makes the blade of shutter that must could be opened when motor works, and the open angle of blade depends entirely on fan life
At blowing wind-force size, i.e., in the prior art the working condition of the blade of louver window on wind turbine depend on fan rotation shape
State so that the performance that the use of shutter has certain limitation, affects wind turbine.
Utility model content
The main technical problems to be solved in the utility model is to provide a kind of wind turbine, and it is up to a hundred to solve wind turbine in the prior art
The working condition of leaf window blade depends on the rotary state of fan, the problem of influencing fan performance.
In order to solve the above technical problems, the utility model provides a kind of wind turbine, including：Casing, fan, transmission shaft, motor
And monitoring system, fan, transmission shaft, motor and monitoring system are all located in casing, fan is connect by transmission shaft with casing, electricity
Machine passes through belt and transmission axis connection；The side far from transmission shaft is provided with shutter on casing；
Monitoring system includes that detection unit, control unit and shutter adjust unit, and shutter adjusts unit and shutter
Connection, detection unit are used to detect the rotating speed of indoor environmental information and/or motor, and control unit is used for according to environmental information
And/or the rotating speed of motor generates first control signal, shutter adjusts unit and is used to adjust shutter according to first control signal
Blade working condition.
Further, shutter further includes connecting rod, and the fixing end of blade is connect with connecting rod；When blade fixing end with
When connecting rod is fixedly connected, sprocket wheel is provided in connecting rod；When the fixing end of blade and connecting rod are rotatably connected, connecting rod
On be provided with and sprocket wheel and be used to support the blade support bar of blade；Sprocket wheel is connected by chain.
Further, it includes driver that shutter, which adjusts unit, and driver is connect with sprocket wheel, for being believed according to the first control
The rotation of number drive sprocket.
Further, control unit is additionally operable to generate second control signal according to environmental information, and motor includes motor control
Device, electric machine controller connect the working condition for controlling motor according to second control signal with control unit.
Further, environmental information includes indoor temperature information and/or indoor humidity information.
Further, monitoring system further includes signal receiving unit, and signal receiving unit is for receiving exterior terminal transmission
External control signal, shutter adjust unit be additionally operable to according to external control signal control blade working condition, motor control
Device processed is additionally operable to control the working condition of motor according to external control signal.
Further, monitoring system further includes signal transmitting unit, signal transmitting unit be used for by following information extremely
Few one kind being sent to exterior terminal：
The environmental information that detection unit detects；
The work state information of blade；
The work state information of motor.
Further, solar panel is pasted on blade, solar panel is electrically connected with monitoring system and/or motor
It connects.
Further, fan is provided with spacing collar, spacing collar is connect with casing.
Further, side corresponding with shutter is provided with protection network on casing.
The utility model has the beneficial effects that：
The utility model provides a kind of wind turbine, including：Casing, fan, transmission shaft, motor and monitoring system, fan, transmission
Axis, motor and monitoring system are all located in casing, and fan is connect by transmission shaft with casing, and motor is connected by belt and transmission shaft
It connects；The side far from transmission shaft is provided with shutter on casing；Monitoring system includes detection unit, control unit and shutter tune
Unit is saved, shutter adjusts unit and connect with shutter, and detection unit is used to detect turn of indoor environmental information and/or motor
Speed, control unit are used to generate first control signal according to the rotating speed of environmental information and/or motor, and shutter adjusts unit and is used for
The working condition of the blade of shutter is adjusted according to first control signal.Wind turbine i.e. provided by the utility model, with the prior art
The angle that the rotary state that fan is depended entirely on whether opening and blade of middle blade of louver window are opened depends on rotation speed of the fan
Wind turbine compare, according to indoor environmental information and/or the rotating speed of motor, can intelligently control opening for the blade of shutter
Off status and open angle, to improve the performance of wind turbine, but also the use of wind turbine is more intelligent.
Description of the drawings
Fig. 1 is a kind of blower fan structure schematic diagram that the utility model embodiment provides；
Fig. 2 is the back structures schematic diagram of wind turbine shown in Fig. 1；
Fig. 3 is the shutter schematic diagram of wind turbine shown in Fig. 2；
Fig. 4 is another structural schematic diagram of the shutter connecting rod of wind turbine shown in Fig. 2 or Fig. 3；
Fig. 5 is the structural schematic diagram of monitoring system shown in FIG. 1.
Reference numeral：
Casing 1, fan 2, transmission shaft 3, motor 4, monitoring system 7, detection unit 71, control unit 72, shutter are adjusted
Unit 73, signal receiving unit 74, signal transmitting unit 75, shutter 5, blade 51, connecting rod 52, sprocket wheel 53, blade support
Bar 54, chain 62, driver 63, fixed column 10, spacing collar 11, protection network 12.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments of the present invention to providing in the accompanying drawings is not intended to limit requirement below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts, all
Belong to the range of the utility model protection.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the present invention, it should be noted that the orientation of the instructions such as term "upper", "lower", "bottom", "inner"
Or position relationship be based on the orientation or positional relationship shown in the drawings or the utility model product using when usually put
Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply the indicated dress
It sets or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to the utility model
Limitation in addition, term " first ", " second " etc. be only used for distinguish description, be not understood to indicate or imply relatively important
Property.
The utility model is described in further detail below by specific implementation mode combination attached drawing.
In order to solve the above technical problems, the utility model provides a kind of wind turbine, referring to Fig. 1-Fig. 5, which includes casing
1, fan 2, transmission shaft 3, motor 4 and monitoring system 7, fan 2, transmission shaft 3, motor 4 and monitoring system 7 are all located in casing 1,
Fan 2 is connect by transmission shaft 3 with casing 1, and motor 4 is connect by belt with transmission shaft 3.Specifically, one in 1 faced chamber of casing
The centre position of side is provided with fixed column 10, and fan 2 is fixed on by transmission shaft 3 in fixed column 10；Motor 4 specifically can be such as figure
The position on the right side of bottom of shell, monitoring system 7 in casing 1 are arranged shown in 1 specifically can be as shown in Figure 1 arranged in casing
Position in 1 on the left of bottom of shell；It is to be appreciated that the present embodiment to the installation position of motor 4 and monitoring system 7 not
It is specifically limited, can specifically be arranged as needed.Further, the side far from transmission shaft 3 on casing 1 is provided with blinds
Window 5, the side opposite with shutter 5 is provided with protection network 12 on casing 1；Side i.e. outside casing faced chamber is provided with shutter
5, indoor side is provided with protection network 12.Further, fan 2 is provided with spacing collar 11, spacing collar 11 and machine
Shell 1 connects, the rotation position for limiting fan 2, while can limit the direction of motion that fan 2 forms air-flow in rotation,
Improve the transfer efficiency of air-flow.
Further, in this embodiment monitoring system include that detection unit, control unit and shutter adjust unit, hundred
Leaf window adjusts unit and is connect with shutter, and detection unit is used to detect the rotating speed of indoor environmental information and/or motor, and control is single
For generating first control signal according to the rotating speed of environmental information and/or motor, shutter adjusts unit and is used for according to first member
Control the working condition of the blade of Signal Regulation shutter.Further, shutter further includes connecting rod, the fixing end of blade with
Connecting rod connects；When the fixing end of blade is fixedly connected with the connecting rod, sprocket wheel is provided in connecting rod；When the fixing end of blade
It is provided with sprocket wheel when being rotatably connected with connecting rod, in connecting rod and is used to support the blade support bar of blade；Sprocket wheel passes through chain
Item connects.Further, it includes driver that shutter, which adjusts unit, and driver is connect with sprocket wheel, for being believed according to the first control
The rotation of number drive sprocket.Specifically, referring to Fig. 5, the monitoring system 7 in the present embodiment includes detection unit 71, control unit
72 and shutter adjust unit 73.Fig. 2-Fig. 4 is referred to, shutter includes four groups of blades 51 and connecting rod 52, and blade 51 is consolidated
Fixed end is connect with connecting rod 52；It includes driver 63 that shutter, which adjusts unit 73, and shutter adjusts unit 73 and connect with shutter 5
Can be specifically the connection of sprocket wheel 53 in 5 the lowermost connecting rod 52 of driver 63 and shutter, driver 63 connects with sprocket wheel 53
It connects for driving the lowermost sprocket wheel 53 to rotate, the lowermost sprocket wheel 53 rotation drives three sprocket wheels 53 rotation of upper end.
Further, Fig. 3 is referred to, when the fixing end of blade 51 is fixedly connected with connecting rod 52, sprocket wheel is provided in connecting rod 52
53, you can connecting rod 52 can be driven to rotate by drive sprocket 53, to be rotated with movable vane piece 51, realize blade 51
Open the adjustment with closing and open angle；The wind turbine of the structure can realize blade of louver window when fan does not rotate
It opens, natural ventilation is then carried out by the shutter；Further, the wind turbine of the structure so that the open angle of blade can
Adjust, and the open angle can be fixed, compared with the prior art in the open angle of blade place one's entire reliance upon fan wind-force size
Scheme, be effectively improved the application performance of wind turbine.Fig. 3 and Fig. 4 are referred to, when fixing end and the connecting rod 52 of blade 51 can
When rotation connection, it is provided with sprocket wheel 53 in connecting rod 52 and is used to support the blade support bar 54 of blade, i.e., when sprocket wheel 53 rotates
Connecting rod 52 is driven to rotate, at this time since blade 51 and connecting rod 52 are rotatably connected, blade 51 does not rotate, and works as blade support
After bar 54 makes the blade support bar 54 be contacted with blade 51 with the rotation of connecting rod 52, the blade support bar 54 is with movable vane piece 51 1
Rotation is played, to realize opening and closing and the adjustment of open angle of blade 51；The blade of the shutter of the structure, both may be used
When fan rotates, to be opened by the blowing that fan generates, it can also be controlled and be opened by control system；So that the use of the wind turbine
More diversification improves the performance of wind turbine.Further, the angular range of the opening of the blade 51 is 0 °~120 °.
Further, in this embodiment the blade 51 of shutter 5 and the logarithm of connecting rod 52 that provide can be specifically arranged as needed,
It can be four couple as shown in Figures 2 and 3, can also be five pairs, the six arbitrary logarithms of equity.
Further, detection unit 71 is used to detect the rotating speed of indoor environmental information and/or motor, and environmental information includes
Indoor temperature and/or indoor humidity.Specifically, detection unit 71 can only include the temperature electricity for detecting indoor environment temperature
Sub- meter, and/or the humidity electronic, horological gauge of indoor humidity is measured, indoor temperature is measured by the temperature electronic meter
Degree, passes through the indoor humidity of humidity electronic, horological flowmeter measurement；In addition, the detection unit can also only include tachometric survey meter, it should
Tachometric survey meter connect the rotating speed for measurement motor with the electric machine controller of motor 4；Certainly, the temperature electronic meter, wet
Degree electronic, horological gauge and tachometric survey meter can also be arranged simultaneously as needed.Control unit 72 connect with detection unit 71 and is used for
First control signal is generated according to the rotating speed of environmental information and/or motor, the first control signal is then sent to shutter
Unit 73 is adjusted, shutter is made to adjust unit 73 according to the on off state of the blade of first control signal adjusting shutter 5 and beat
Angle of release degree.Specifically, it includes when control that control unit 72 generates first control signal according to the rotating speed of environmental information and/or motor
When unit 72 judges that indoor temperature is more than certain value and/or humidity more than certain value according to environmental information, control blade is generated
51 first control signals opened, or the first control signal for increasing 52 open angle of blade is generated, so that indoor gas
It can be discharged faster；When control unit 72 judges that indoor temperature is less than certain value and/or humidity is small according to environmental information
After certain value, the first control signal that control blade 51 is closed is generated, or generate and reduce the first of 52 open angle of blade
Control signal；Or the first control signal for 51 open angle of regulation blade is generated according to the rotating speed of motor 4, for example work as electricity
When the rotating speed of machine 4 is more than certain value, the first control signal for increasing 51 open angle of blade is generated, so that indoor gas can be with
It is discharged faster；When the rotating speed of motor 4 is less than certain value, the first control signal for reducing 51 open angle of blade is generated.
It is then single according to detection it is possible to further pre-set the correspondence of environmental information and/or rotating speed and first control signal
The environmental information and/or rotating speed that member 71 detects are matched with the correspondence, inquire corresponding first control signal, then
The first control signal is sent to corresponding shutter and adjusts unit 73.
Further, control unit is additionally operable to generate second control signal according to environmental information, and motor includes motor control
Device, electric machine controller connect on off state and/or rotating speed for controlling motor according to second control signal with control unit.Tool
Body, motor 4 further includes electric machine controller, and the second control signal of generation is sent to electric machine controller by control unit 72, electricity
Machine controller controls the on off state and/or rotating speed of motor 4 according to the second control signal.Electric machine controller is according to second control
The on off state and/or rotating speed of signal control motor 4 processed include：When control unit 72 judges indoor temperature according to environmental information
When being more than certain value more than certain value and/or humidity, the second control signal that control motor 4 is opened is generated, or generate and accelerate electricity
The second control signal of the rotating speed of machine 4, so that motor work is to accelerate the discharge of indoor gas；When control unit 72 is according to ring
Border information judges that indoor temperature is less than certain value and/or humidity less than the second control for after certain value, generating the control closing of motor 4
Signal processed, or the second control signal for the rotating speed for reducing motor 4 is generated, effectively to save electric energy.I.e. the electric machine controller can
It, can be with regulation motor according to the indoor temperature and/or humidity of current assembling, to control the startup and closing of motor
Rotating speed so that wind turbine is more intelligent to the adjusting of indoor environment and rationalizes, and is effectively improved the performance of wind turbine.
Further, monitoring system further includes signal receiving unit, and signal receiving unit is for receiving exterior terminal transmission
External control signal, shutter adjust unit be additionally operable to according to external control signal control blade working condition, motor control
Device processed is additionally operable to control the working condition of motor according to external control signal.Specifically, referring to Fig. 5, monitoring system 7 includes letter
Number receiving unit 74, monitoring system 7 receive the external control signal that exterior terminal is sent by signal receiving unit 74, outside this
Terminal, which can be specifically computer, mobile phone, remote controler etc., can occur to control the terminal of signal.External control signal can be specifically
The signal for opening or closing blade 51 can also be the signal of 51 open angle of regulation blade, can also be that control motor 4 is opened
Or the signal closed, or control the signal etc. of the rotating speed of motor 4.The external control signal that signal receiving unit 74 will receive
It is sent to control unit 72, after control unit 72 analyzes the external control signal, corresponding shutter is sent to and adjusts
Unit 73 or electric machine controller make shutter adjust unit 73 or electric machine controller and are carried out accordingly according to the external control signal
Operation, so that associated user can be remotely controlled the working condition of the wind turbine, improves the performance of wind turbine.
Further, Fig. 5 is referred to, monitoring system further includes signal transmitting unit 75, and signal transmitting unit 75 is used for will
At least one of following information is sent to exterior terminal：The environmental information that detection unit detects；The working condition of blade is believed
Breath；The work state information of motor.Specifically, for convenience of relevant staff know the wind turbine working environment information and/or
Whether indoor temperature and/or humidity information that detection unit 4 detects, motor the information such as can be opened by work state information
It is sent to associated external terminal by signal transmitting unit 75, so that relevant staff is known by the exterior terminal above-mentioned
Information, to be easily managed to the working condition of the wind turbine.
Further, solar panel is pasted on blade 51, solar panel connects with monitoring system and/or motor
It connects.Specifically, to save energy consumption and the wind turbine being made to could be used that when having a power failure, solar cell can be attached on blade 51
Plate, solar panel can be connect with monitoring system 7 for give monitoring system 7 power, can also be connect with motor 4 for
Motor 4 is powered.
The utility model provides a kind of wind turbine, including：Casing, fan, transmission shaft, motor and monitoring system, fan, transmission
Axis, motor and monitoring system are all located in casing, and fan is connect by transmission shaft with casing, and motor is connected by belt and transmission shaft
It connects；The side far from transmission shaft is provided with shutter on casing；Monitoring system includes detection unit, control unit and shutter tune
Unit is saved, shutter adjusts unit and connect with shutter, and detection unit is used to detect turn of indoor environmental information and/or motor
Speed, control unit are used to generate first control signal according to the rotating speed of environmental information and/or motor, and shutter adjusts unit and is used for
The working condition of the blade of shutter is adjusted according to first control signal.Wind turbine i.e. provided by the utility model, with the prior art
The opening of middle blade needs to rotate by fan, and the angle that blade is opened is compared depending on the wind turbine of rotation speed of the fan, Ke Yigen
According to indoor environmental information and/or the rotating speed of motor, the working condition of the blade of shutter is intelligently controlled, to effectively
Improve the performance of wind turbine；Further, wind turbine provided in this embodiment is effectively improved wind turbine by the way that monitoring system is arranged
Intelligent management and use.
The above content is combine specific embodiment further detailed description of the utility model, and it cannot be said that
The specific implementation of the utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field
For, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, all should be considered as belonging to
In the scope of protection of the utility model.
Claims (10)
1. a kind of wind turbine, which is characterized in that including：Casing, fan, transmission shaft, motor and monitoring system, the fan, transmission
Axis, motor and monitoring system are all located in the casing, and the fan is connect by the transmission shaft with the casing, the electricity
Machine passes through belt and the transmission axis connection；The side far from the transmission shaft is provided with shutter on the casing；
The monitoring system includes that detection unit, control unit and shutter adjust unit, and the shutter adjusts unit and institute
Shutter connection is stated, the detection unit is used to detect the rotating speed of indoor environmental information and/or the motor, and the control is single
For member for generating first control signal according to the rotating speed of the environmental information and/or the motor, the shutter adjusts unit
Working condition for the blade for adjusting the shutter according to the first control signal.
2. wind turbine as described in claim 1, which is characterized in that the shutter further includes connecting rod, the fixation of the blade
End is connect with the connecting rod；When the fixing end of the blade is fixedly connected with the connecting rod, it is arranged in the connecting rod
There is sprocket wheel；When the fixing end of the blade and the connecting rod are rotatably connected, sprocket wheel and use are provided in the connecting rod
In the blade support bar for supporting the blade；The sprocket wheel is connected by chain.
3. wind turbine as claimed in claim 2, which is characterized in that it includes driver that the shutter, which adjusts unit, the driving
Device is connect with the sprocket wheel, for driving the sprocket wheel to rotate according to the first control signal.
4. wind turbine as described in any one of claims 1-3, which is characterized in that described control unit is additionally operable to according to the environment
Information generates second control signal, and the motor includes electric machine controller, and the electric machine controller is connect with described control unit
Working condition for controlling the motor according to the second control signal.
5. wind turbine as claimed in claim 4, which is characterized in that the environmental information includes indoor temperature information and/or interior
Humidity information.
6. wind turbine as claimed in claim 4, which is characterized in that the monitoring system further includes signal receiving unit, the letter
Number receiving unit is used to receive the external control signal of exterior terminal transmission, and the shutter adjusts unit and is additionally operable to according to
External control signal controls the working condition of the blade, and the electric machine controller is additionally operable to according to the external control signal control
Make the working condition of the motor.
7. wind turbine as claimed in claim 6, which is characterized in that the monitoring system further includes signal transmitting unit, the letter
Number transmission unit is used at least one of following information being sent to the exterior terminal：
The environmental information that the detection unit detects；
The work state information of the blade；
The work state information of the motor.
8. wind turbine as described in any one of claims 1-3, which is characterized in that it is pasted with solar panel on the blade,
The solar panel is electrically connected with the monitoring system and/or the motor.
9. wind turbine as described in any one of claims 1-3, which is characterized in that the fan is provided with spacing collar, it is described
Spacing collar is connect with the casing.
10. wind turbine as described in any one of claims 1-3, which is characterized in that corresponding with the shutter on the casing
Side is provided with protection network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820465693.5U CN208073836U (en) | 2018-04-03 | 2018-04-03 | A kind of wind turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820465693.5U CN208073836U (en) | 2018-04-03 | 2018-04-03 | A kind of wind turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208073836U true CN208073836U (en) | 2018-11-09 |
Family
ID=64043068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820465693.5U Expired - Fee Related CN208073836U (en) | 2018-04-03 | 2018-04-03 | A kind of wind turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208073836U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111687751A (en) * | 2020-06-19 | 2020-09-22 | 安徽雪城超细碳酸钙有限公司 | Ash removal device and method for ceramic polishing rod |
| CN115218488A (en) * | 2022-09-20 | 2022-10-21 | 江苏中南鼓风机有限公司 | Solar environment-friendly and energy-saving induced draft fan and use method thereof |
-
2018
- 2018-04-03 CN CN201820465693.5U patent/CN208073836U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111687751A (en) * | 2020-06-19 | 2020-09-22 | 安徽雪城超细碳酸钙有限公司 | Ash removal device and method for ceramic polishing rod |
| CN115218488A (en) * | 2022-09-20 | 2022-10-21 | 江苏中南鼓风机有限公司 | Solar environment-friendly and energy-saving induced draft fan and use method thereof |
| CN115218488B (en) * | 2022-09-20 | 2022-12-13 | 江苏中南鼓风机有限公司 | Solar environment-friendly and energy-saving induced draft fan and use method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20181109 Termination date: 20200403 |