Vertical axis wind turbine capable of self-adapting to wind direction

Abstract

The vertical axis wind driven generator comprises a wind direction rudder and a fan impeller, a flow guide cover is arranged outside the fan impeller, the flow guide cover is connected with the wind direction rudder, a wind direction flow guide plate is further arranged on one side of the flow guide cover, the wind direction flow guide plate is parallel to the wind direction rudder, and the flow guide cover rotates relative to the fan impeller. The low-wind starting capability and the low-wind-speed working capability of the wind driven generator are greatly improved.

Description

Technical Field

[0001] The utility model relates to a wind power generation device, in particular to a vertical axis wind power generator capable of self-adapting to wind direction. Background Art

[0002] Small wind turbines that complement each other with solar power are usually installed at a low height. Since they are installed close to the ground, the wind speed is low, which makes it difficult to start the wind turbines and the wind speed is difficult to support the full power operation of the wind turbines. If the weather is bad, insufficient electricity generated by solar energy will affect the normal operation of electrical equipment, and in serious cases may cause loss or damage of equipment data.

[0003] The solution proposed in the invention patent of "A blade device for a vertical axis wind generator" (application number 2022106834088) disclosed by China on November 23, 2023 is to add a fairing on the leeward side of the fan impeller to eliminate the resistance on the leeward side of the fan impeller to improve the starting ability of the fan impeller, but it simply shields the resistance on the leeward side of the fan impeller, does not effectively utilize the wind force on the leeward side of the fan impeller, and the effective windward area of ​​the fan impeller does not change, which is not very helpful in improving the starting and work of the fan impeller. Utility Model Content

[0004] The utility model aims to provide a vertical axis wind turbine which can adapt to wind direction, and solves the problems that low-altitude wind turbines are difficult to start and difficult to operate at full power due to insufficient wind speed.

[0005] To achieve the purpose of the utility model, it includes: a wind vane and a fan impeller, wherein a guide cover is provided outside the fan impeller, the guide cover is connected to the wind vane, and a wind guide plate is also provided on one side of the guide cover, the wind guide plate and the wind vane are parallel, and the guide cover rotates relative to the fan impeller.

[0006] The air outlet of the deflector is matched with the windward surface of the fan impeller that is doing work.

[0007] The wind deflector plate extends to the rear of the air outlet.

[0008] The deflector is connected to the wind vane through a fixing frame, and the upper part and the lower part of the fixing frame are respectively provided with perforations.

[0009] The perforation is movably connected to the rotating shaft of the fan impeller.

[0010] The area of ​​the air outlet of the air guide cover is smaller than the area of ​​the air confluence port of the air guide cover.

[0011] The utility model uses a guide plate arranged on one side of the guide cover to shield the resistance on the leeward side of the fan impeller, and at the same time, the wind forms a negative pressure area on the inner side of the guide plate and the fan impeller area. The airflow in the negative pressure area forms a vortex, and the vortex wind direction is the same as the rotation direction of the fan impeller. Under the action of the vortex, the fan impeller is driven to rotate, which greatly improves the low-wind starting ability and working ability of the wind turbine generator under low wind speed. Secondly, the area of ​​the air outlet of the guide cover is smaller than the area of ​​the confluence port of the guide cover, and the wind speed of the air outlet is increased by the guide cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the front view of the utility model. Figure 2 This is an exploded view of the parts of the utility model. Figure 3 This is a working principle diagram of the utility model. DETAILED DESCRIPTION

[0013] like Figure 1 , Figure 2 and Figure 3 The utility model shown includes: a wind vane 3 and a fan impeller 4, a guide cover 2 is provided outside the fan impeller 4, the guide cover 2 is connected to the wind vane 3, and a wind deflector 1 is also provided on one side of the guide cover 2, the wind deflector 1 is parallel to the wind vane 3, a confluence port 6 is provided at the front of the guide cover 2, and a wind outlet 5 is provided at the rear of the guide cover, and the area of ​​the wind outlet 5 is smaller than the area of ​​the confluence port 6. The wind outlet 5 is adapted to the positive working windward surface of the fan impeller 4, which means that the wind direction through the wind outlet 5 is perpendicular to the positive working windward surface of the fan impeller 4 during operation. The wind deflector 1 extends to the rear of the wind outlet.

[0014] The deflector 2 is connected to the wind vane 3 through a fixed frame. The upper and lower parts of the fixed frame are respectively provided with perforations, which are movably connected to the rotating shaft of the fan impeller 4. The deflector 2 rotates relative to the fan impeller 4, thereby driving the deflector 2 to face the direction of wind through the wind vane 3.

[0015] When the wind blows, the wind deflector 1 of the utility model is parallel to the wind direction under the action of the wind force and the wind direction rudder 3. At this time, the cross section of the confluence port 6 of the air guide cover 2 is perpendicular to the wind direction so as to collect more air volume, and then acts on the fan impeller 4 after being accelerated through the air discharge port 5. At the same time, a negative pressure area is formed in the non-windward area of ​​the wind deflector 1 and the fan impeller 4, so that the airflow forms a vortex in the negative pressure area. The wind direction of the vortex is the same as the rotation direction of the fan impeller 4. Under the action of the vortex, the fan impeller is assisted in rotating, and the wind energy is used to do work on the fan impeller to the maximum extent.

[0016] The above-mentioned embodiments only express several implementation methods of the utility model, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A vertical axis wind turbine capable of self-adapting to wind direction, comprising: A wind vane (3) and a fan impeller (4), characterized in that a guide hood (2) is provided outside the fan impeller (4), the guide hood (2) is connected to the wind vane (3), and a wind guide plate (1) is provided on one side of the guide hood (2), the wind guide plate (1) and the wind vane (3) are parallel, and the guide hood (2) rotates relative to the fan impeller (4).

2. A vertical axis wind turbine capable of self-adapting to wind direction according to claim 1, characterized in that: The air outlet (5) of the deflector (2) is adapted to the windward surface of the fan impeller (4) that is doing work.

3. A vertical axis wind turbine capable of self-adapting to wind direction according to claim 1 or 2, characterized in that: The wind deflector plate (1) extends to the rear of the air discharge port (5).

4. A vertical axis wind turbine capable of self-adapting to wind direction according to claim 1 or 2, characterized in that: The deflector (2) is connected to the wind vane (3) via a fixing frame, and the upper and lower parts of the fixing frame are respectively provided with perforations.

5. A vertical axis wind turbine capable of self-adapting to wind direction according to claim 4, characterized in that: The perforation is movably connected to the rotating shaft of the fan impeller (4).

6. A vertical axis wind turbine capable of self-adapting to wind direction according to claim 2, characterized in that: The area of ​​the air discharge port (5) of the air guide cover (2) is smaller than the area of ​​the confluence port (6) of the air guide cover (2).

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