CN110878737A - Wind energy vacuum generating device and wind driven generator - Google Patents
Wind energy vacuum generating device and wind driven generator Download PDFInfo
- Publication number
- CN110878737A CN110878737A CN201810945972.6A CN201810945972A CN110878737A CN 110878737 A CN110878737 A CN 110878737A CN 201810945972 A CN201810945972 A CN 201810945972A CN 110878737 A CN110878737 A CN 110878737A
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- China
- Prior art keywords
- wind energy
- wind
- guide ring
- vacuum
- driven generator
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/30—Wind motors specially adapted for installation in particular locations
- F03D9/34—Wind motors specially adapted for installation in particular locations on stationary objects or on stationary man-made structures
- F03D9/35—Wind motors specially adapted for installation in particular locations on stationary objects or on stationary man-made structures within towers, e.g. using chimney effects
- F03D9/37—Wind motors specially adapted for installation in particular locations on stationary objects or on stationary man-made structures within towers, e.g. using chimney effects with means for enhancing the air flow within the tower, e.g. by heating
- F03D9/41—Wind motors specially adapted for installation in particular locations on stationary objects or on stationary man-made structures within towers, e.g. using chimney effects with means for enhancing the air flow within the tower, e.g. by heating by using the wind outside the tower, e.g. using ejectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/30—Wind power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
Abstract
The invention aims to provide a wind energy vacuum generating device and a wind driven generator, wherein a conventional vacuum generating device usually generates a certain vacuum degree in the device by consuming energy.
Description
Technical Field
The invention relates to the field of fluid dynamics and the technical field of wind power generation, in particular to a wind energy vacuum generating device and a wind driven generator.
Background
The conventional vacuum generating device usually consumes energy to generate a certain vacuum degree in the device, the wind energy vacuum generating device in the invention can absorb wind energy in the nature to generate a certain vacuum degree in the device, thereby reducing the energy consumption, providing auxiliary energy for ventilation of electromechanical equipment, buildings, factory buildings or other buildings, and simultaneously applying the wind energy vacuum generating device in the invention to the field of wind power generation, thereby creating a novel wind power generating set with low cost and simpler structure, and greatly reducing the construction cost of the wind power generating set.
Disclosure of Invention
The invention aims to provide a wind energy vacuum generating device and a wind driven generator, which can reduce the energy consumption of the vacuum generating device in the operation process by absorbing wind energy in the nature, and meanwhile, the wind energy vacuum generating device provided by the invention is applied to the field of wind power generation, so that a novel wind driven generator set with low cost and simple structure is created, and the construction cost of the wind driven generator set can be greatly reduced.
In one aspect of an embodiment of the present invention, there is provided a wind energy vacuum generating apparatus including:
the wind energy vacuum generating device is composed of a guide ring and a guide ring support.
The guide ring is used for absorbing wind energy and changing the flowing direction and the flowing speed of air, and the air flow after changing the direction can pull the air in the negative pressure cavity to flow out of the negative pressure cavity so as to generate a certain vacuum degree in the negative pressure cavity; the guide ring structure is a hollow circular table, or a hollow prismatic table with polygonal lateral edges as curves on the upper bottom surface and the lower bottom surface, or a hollow prismatic table with polygonal lateral edges as combined lines of straight lines and curves on the upper bottom surface and the lower bottom surface, or a hollow circular table with circular bus lines as combined lines of straight lines and curves on the upper bottom surface and the lower bottom surface; the center line of the guide ring is vertical to the ground plane.
The guide ring support is connected with the guide ring and used for fixing the guide ring; the cavity formed by the support of the flow guide ring and the connection of the flow guide ring is a negative pressure cavity, air inside the negative pressure cavity is taken away from the negative pressure cavity by the flow of air outside the flow guide ring, so that the pressure inside the negative pressure cavity is smaller than the pressure of outside air, and a certain vacuum degree is generated inside the negative pressure cavity; the flow guide ring supporting structure is a hollow circular table, or a hollow prismatic table, or a hollow cylinder, or a hollow prismatic table with polygonal lateral edges as curves on the upper bottom surface and the lower bottom surface, or a hollow prismatic table with polygonal lateral edges as combined lines of straight lines and curves on the upper bottom surface and the lower bottom surface, or a hollow circular table with circular buses as combined lines of straight lines and curves on the upper bottom surface and the lower bottom surface; the center line of the flow guide ring support is vertical to the ground plane, and the center line of the flow guide ring support is superposed with the center line of the flow guide ring.
In another aspect of an embodiment of the present invention, there is provided a wind power generator including:
the wind driven generator consists of the wind energy vacuum generating device, a vacuum breaking device, an airflow flow regulating device, a wind energy conversion device and a ventilating duct, wherein the vacuum breaking device can be selectively installed or removed according to the material and the material strength of the wind driven generator; the ventilating duct is a bendable duct; the wind driven generator can be connected with the ground plane through a bracket.
The air flow adjusting device is connected with the wind energy vacuum generating device through a ventilation pipeline, the air flow adjusting device can adjust the air flow passing through the wind energy conversion device so as to control the size of the output load of the wind driven generator, and the air flow adjusting device is connected with the wind energy conversion device through the ventilation pipeline or directly connected with the wind energy conversion device.
The vacuum breaking device is internally provided with a vacuum breaking flow adjusting device, the vacuum degree in the negative pressure cavity can be adjusted by adjusting the air inflow of the vacuum breaking flow adjusting device, so that the aim of indirectly adjusting the output load of the wind driven generator is fulfilled, the air pressure difference between the inside and the outside of the wind driven generator can be reduced by adjusting the output load of the wind driven generator through the vacuum breaking device, the material strength of the wind driven generator can be properly reduced, and the vacuum breaking device can be selectively installed or removed according to actual conditions and the material quality of the wind driven generator; the vacuum breaking device is arranged on the ventilation pipeline between the wind energy vacuum generating device and the airflow flow adjusting device.
Wind energy conversion device pass through the air pipe with airflow flow adjusting device connects or directly is connected with airflow flow adjusting device, wind energy conversion device pass through the air pipe with the air inlet is connected or directly with the air inlet is connected, wind energy conversion device is the combination of impeller and generator or is the impeller, if when wind energy conversion device is the impeller, then need install mechanical energy transmission device between impeller and generator, wind energy conversion device can convert wind energy into mechanical energy or electric energy.
Description of the drawings:
the invention may be better understood from the following description of specific embodiments thereof taken in conjunction with the accompanying drawings, in which: other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings in which like or similar reference characters refer to the same or similar parts.
FIG. 1 is a three-dimensional view of a wind energy vacuum generator
FIG. 2 is a schematic view of a wind turbine
In FIGS. 1-2:
101. a flow guide ring; 102. the center line of the guide ring;
201. supporting the flow guide ring; 202. the flow guide ring supports the center line;
301. a negative pressure chamber;
401. a vacuum breaking device; 402. a vacuum break flow regulator; 403. a vacuum breaking device air inlet;
501. an airflow rate adjusting device;
601. a wind energy conversion device; 602. an air inlet;
701. a ventilation duct;
the specific implementation mode is as follows:
features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is in no way limited to any specific configuration and algorithm set forth below, but rather covers any modification, replacement or improvement of elements, components or algorithms without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present invention.
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. In the drawings, the thickness of regions and layers may be exaggerated for clarity. The same reference numerals denote the same or similar structures in the drawings, and thus detailed descriptions thereof will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.
In the description of the present invention, it should also be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
Technical terms related to the embodiments of the present invention:
polygonal: the figure formed by connecting a plurality of straight lines end to end or a plurality of curves end to end or a plurality of straight lines and a plurality of curves end to end.
Ground plane: perpendicular to the plane of the earth's diameter.
As shown in fig. 1-2, a wind energy vacuum generating device and a wind power generator according to an embodiment of the present invention includes:
a wind energy vacuum generating device is composed of a guide ring 101 and a guide ring support 201.
The guide ring 101 is used for absorbing wind energy and changing the flowing direction and the flowing speed of air, and the air flow after changing the direction can pull the air in the negative pressure cavity 301 to flow out of the negative pressure cavity 301, so that a certain vacuum degree is generated in the negative pressure cavity 301; the structure of the flow guide ring 101 is a hollow circular truncated cone, or a hollow frustum with polygonal lateral edges as curves on the upper bottom surface and the lower bottom surface, or a hollow frustum with polygonal lateral edges as combined lines of straight lines and curves on the upper bottom surface and the lower bottom surface, or a hollow circular truncated cone with circular generatrixes as combined lines of straight lines and curves on the upper bottom surface and the lower bottom surface; the deflector ring centerline 102 is perpendicular to the ground plane.
The guide ring support 201 is connected with the guide ring 101 and used for fixing the guide ring 101; the cavity formed by connecting the guide ring support 201 and the guide ring is a negative pressure cavity 301, air flow outside the guide ring takes air inside the negative pressure cavity 301 away from the negative pressure cavity 301, so that the pressure inside the negative pressure cavity 301 is smaller than the pressure of outside air, and a certain vacuum degree is generated inside the negative pressure cavity 301; the structure of the guide ring support 201 is a hollow circular truncated cone, or a hollow prismatic table, or a hollow cylinder, or a hollow prismatic table with polygonal lateral edges as curves on the upper bottom surface and the lower bottom surface, or a hollow prismatic table with polygonal lateral edges as combined lines of straight lines and curves on the upper bottom surface and the lower bottom surface, or a hollow circular truncated cone with circular generatrixes as combined lines of straight lines and curves on the upper bottom surface and the lower bottom surface; the flow guide ring support centerline 202 is perpendicular to the ground plane, and the flow guide ring support centerline 202 coincides with the flow guide ring centerline 102.
A wind driven generator is composed of a wind energy vacuum generating device, a vacuum breaking device 401, an airflow flow adjusting device 501, a wind energy conversion device 601 and a ventilating duct 701, wherein the ventilating duct 701 is a bendable pipeline, the vacuum breaking device 401 can be selectively installed or removed according to the material and the material strength of the wind driven generator, and the wind driven generator can be connected with the ground level through a support.
The airflow flow adjusting device 501 is connected with the wind energy vacuum generating device through a ventilation pipeline, the airflow flow adjusting device 501 can adjust the airflow flow passing through the wind energy conversion device 601 so as to control the output load of the wind driven generator, and the airflow flow adjusting device 501 is connected with the wind energy conversion device through the ventilation pipeline or directly connected with the wind energy conversion device 601.
The vacuum breaking device 401 is internally provided with a vacuum breaking flow adjusting device 402, the vacuum degree in the negative pressure cavity 301 can be adjusted by adjusting the air inflow of the vacuum breaking flow adjusting device 402, so that the aim of indirectly adjusting the output load of the wind driven generator is fulfilled, the vacuum breaking device 401 is used for adjusting the output load of the wind driven generator, the air pressure difference between the inside and the outside of the wind driven generator can be reduced, the material strength of the wind driven generator can be properly reduced, and the vacuum breaking device 401 can be selectively installed or removed according to the actual condition and the material of the wind driven generator; the vacuum breaking device 401 is mounted on the ventilation duct between the wind energy vacuum generating device and the airflow flow regulating device 401.
The wind energy conversion device 601 is connected with the airflow flow rate adjusting device 501 through a ventilation duct or directly connected with the airflow flow rate adjusting device 501, the wind energy conversion device 601 is a combination of an impeller and a generator or is an impeller, if the wind energy conversion device 601 is an impeller, a mechanical energy transmission device needs to be installed between the impeller and the generator, and the wind energy conversion device 601 can convert wind energy into mechanical energy or electric energy.
The working principle is as follows: when air flows through the flow guide ring 101, the air flow direction and the air flow speed can be changed, and meanwhile, partial air in the negative pressure cavity 301 can be taken away, so that the pressure in the negative pressure cavity 301 is smaller than atmospheric pressure, therefore, external air can enter the negative pressure cavity 301 through the wind energy conversion device 601, the airflow flow regulating device 501 and the ventilation pipeline 701 under the action of atmospheric pressure and is finally discharged from the negative pressure cavity 301, when the air flows through the wind energy conversion device, the wind energy conversion device 601 can absorb energy generated by the air flow, the airflow flow regulating device 501 can regulate the airflow flow flowing through the wind energy conversion device 601, and therefore the purpose of controlling the energy output rate of the wind energy conversion device 601 is achieved, the airflow flow regulating device 501 can be closed in the maintenance process, and the wind energy conversion device 601 is maintained; by adjusting the vacuum breaking flow adjusting device 402 inside the vacuum breaking device 401, the airflow passing through the vacuum breaking device 401 can be adjusted, so that the vacuum degree inside the negative pressure cavity 301 and the output load of the wind driven generator can be indirectly adjusted, and the material strength of the ventilation pipeline 701, the guide ring 101 and the guide ring support 201 can be reduced by using the vacuum breaking device.
Claims (7)
1. A wind energy vacuum generating device, comprising:
the wind energy vacuum generating device consists of a guide ring (101) and a guide ring support (201), wherein a cavity formed by connecting the guide ring support (201) and the guide ring (101) is a negative pressure cavity (301); the center line (102) of the guide ring is superposed with the support center line (202) of the guide ring and is vertical to the ground plane; the flow guide ring (101) is used for absorbing wind energy and changing the air flowing direction and the air flowing speed of the air flowing through the flow guide ring (101), the air with the changed flowing direction can drive the air in the negative pressure cavity (301) to flow out of the negative pressure cavity (301), so that the air pressure in the negative pressure cavity (301) is smaller than the external air pressure, and a certain vacuum degree is generated in the negative pressure cavity (301).
2. The wind energy vacuum generator as defined in claim 1, wherein:
the structure of the flow guide ring (101) is a hollow circular truncated cone, or a hollow frustum with polygonal lateral edges as curves on the upper bottom surface and the lower bottom surface, or a hollow frustum with polygonal lateral edges as straight lines and curved combined lines on the upper bottom surface and the lower bottom surface, or a hollow circular truncated cone with circular bus lines as curves on the upper bottom surface and the lower bottom surface, or a hollow circular truncated cone with circular bus lines as straight lines and curved combined lines on the upper bottom surface and the lower bottom surface.
3. The wind energy vacuum generator as defined in claim 1, wherein:
the structure of the flow guide ring support (201) is a hollow circular truncated cone, or a hollow prismatic table, or a hollow cylinder, or the upper bottom surface and the lower bottom surface are hollow prismatic tables with polygonal lateral edges as curves, or the upper bottom surface and the lower bottom surface are hollow prismatic tables with polygonal lateral edges as straight lines and curved combined lines, or the upper bottom surface and the lower bottom surface are hollow circular truncated cones with circular buses as curves, or the upper bottom surface and the lower bottom surface are hollow circular truncated cones with circular buses as straight lines and curved combined lines.
4. A wind power generator, characterized in that it comprises a wind energy vacuum generating device according to any one of claims 1 to 3,
the method also comprises the following characteristics:
the wind driven generator consists of the wind energy vacuum generating device, a vacuum breaking device (401), an airflow flow adjusting device (501), a wind energy conversion device (601) and a ventilating duct (701); the wind energy vacuum generating device is connected with the airflow flow regulating device (501) through a ventilating duct (701); the airflow flow adjusting device (501) is connected with the wind energy conversion device (601) through a ventilation pipeline (701) or directly connected with the wind energy conversion device (601); the vacuum breaking device (401) is arranged on a ventilation pipeline (701) between the wind energy vacuum generating device and the airflow flow regulating device (501), and the vacuum breaking device (401) can be selectively installed or removed according to the material and the material strength of the wind driven generator; the ventilating duct (701) is a bendable duct; the wind driven generator can be connected with the ground plane through a bracket.
5. A wind power generator as claimed in claim 4, wherein:
a vacuum destruction flow adjusting device (402) is arranged in the vacuum destruction device (401), and the vacuum degree in the negative pressure cavity (301) can be adjusted by adjusting the air inflow of the vacuum destruction flow adjusting device (402), so that the purpose of indirectly adjusting the output load of the wind driven generator is achieved; the vacuum breaking device (401) is used for adjusting the output load of the wind driven generator, so that the air pressure difference between the inside and the outside of the wind driven generator can be reduced, and the material strength of the wind driven generator can be properly reduced.
6. A wind power generator as claimed in claim 4, wherein:
the airflow flow regulating device (501) can regulate the airflow passing through the wind energy conversion device (601), so that the output load of the wind driven generator is controlled.
7. A wind power generator as claimed in claim 4, wherein:
the wind energy conversion device (601) is a combination of an impeller and a generator or is an impeller, if the wind energy conversion device (601) is an impeller, a mechanical energy transmission device needs to be arranged between the impeller and the generator, and the wind energy conversion device (601) can convert wind energy into mechanical energy or electric energy.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810945972.6A CN110878737A (en) | 2018-08-20 | 2018-08-20 | Wind energy vacuum generating device and wind driven generator |
| DE112019002656.9T DE112019002656T5 (en) | 2018-08-20 | 2019-08-16 | Vacuum generating device for wind energy and wind power generator |
| PCT/CN2019/101077 WO2020038297A1 (en) | 2018-08-20 | 2019-08-16 | Wind-powered vacuum generation device and wind power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810945972.6A CN110878737A (en) | 2018-08-20 | 2018-08-20 | Wind energy vacuum generating device and wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110878737A true CN110878737A (en) | 2020-03-13 |
Family
ID=69592272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810945972.6A Pending CN110878737A (en) | 2018-08-20 | 2018-08-20 | Wind energy vacuum generating device and wind driven generator |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN110878737A (en) |
| DE (1) | DE112019002656T5 (en) |
| WO (1) | WO2020038297A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2386853C1 (en) * | 2009-02-09 | 2010-04-20 | Сергей Иванович Коломацкий | Vortex wind plant |
| CN202510290U (en) * | 2012-04-20 | 2012-10-31 | 申昌颜 | Wind driven generator with windmills |
| WO2015192102A1 (en) * | 2014-06-12 | 2015-12-17 | Imperial Wind Corporation | Horizontally channeled vertical axis wind turbine |
| CN108119299B (en) * | 2017-12-15 | 2019-09-27 | 浙江立思能源科技股份有限公司 | Wind-driven generator |
| CN107905955A (en) * | 2017-12-30 | 2018-04-13 | 长沙紫宸科技开发有限公司 | A kind of scalable remittance wind generating equipment for being suitable for rural family expenses |
| CN208595034U (en) * | 2018-08-20 | 2019-03-12 | 甘肃慧风节能有限公司 | A kind of wind energy vacuum generating device and a kind of wind-driven generator |
-
2018
- 2018-08-20 CN CN201810945972.6A patent/CN110878737A/en active Pending
-
2019
- 2019-08-16 WO PCT/CN2019/101077 patent/WO2020038297A1/en active Application Filing
- 2019-08-16 DE DE112019002656.9T patent/DE112019002656T5/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020038297A1 (en) | 2020-02-27 |
| DE112019002656T5 (en) | 2021-08-19 |
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