TWI405900B - Wind power generator - Google Patents

Abstract

A wind power generator includes a housing, an impeller, an empennage connecting stick, an empennage and at least buffering element. An energy generating unit is accommodated in the housing, and the impeller is coupled to the energy generating unit. One end of the empennage connecting stick is connected with the housing via a rotating shaft for allowing the empennage is fixed on the other end of the empennage connecting stick. Also, the buffering element is connected with the empennage connecting stick and the housing and located there between.

Description

Wind Turbines

The present invention relates to a wind turbine and its steering buffer design.

At present, commercial wind turbines can be divided into horizontal axis and vertical axis. In the fan market, the horizontal axis is the majority, but the blade rotation surface must be perpendicular to the inflow wind direction, so it must have the function of correcting the wind direction, large Fans use a yaw control system, while small fans have a tail structure. The horizontal axis fan is usually set in an area with high wind speed and stable wind direction. The location conditions are as follows: 1. The wind field is excellent (the wind speed is above 6m/s and the wind direction is fixed). 2, the erection height is sufficient (generally recommended to be more than 10m, depending on the location). 3. There is no shelter at the upwind of the site.

Most small horizontal axis wind turbines are designed to achieve maximum wind energy. A fixed tail is required to ensure that the impeller can face the positive wind direction. The steering mechanism is sensed by the tail and drives the fan to turn the impeller to change the wind direction. This type of design is suitable for wind direction. Use in stable areas.

However, more and more small horizontal axis wind turbines are now used in urban areas, such as street lights, garden landscaping, building roofs and other areas with more shelter. These installation sites are not guaranteed to have a smooth wind direction, and because of the surface The high roughness makes the turbulence intensity of the wind field larger than that of the suburban area, while the gusts with high turbulence intensity have a higher chance of occurrence. The effect of the gust on the fan is that the momentary lateral gusts cause the tail to be affected and turn, originally aligned The wind turbine entering the wind direction is turned by the instantaneous gust. If the deflection angle exceeds 60 degrees, the inflow wind energy will be reduced to half. After the wind turbine turns, the wind turbine has deviated from the inflow wind direction and the blade speed is reduced or even stopped. It is necessary to re-align the inflow wind direction and accelerate again. During the period from the lateral gust to the end of the gust and then realign the wind direction, the power generation will almost decrease to 0, and the delay of the inflow wind may not last until the fan Accelerated completion. Therefore, in the urban area, the fixed tail small horizontal axis wind turbine will greatly reduce the overall power generation due to the instantaneous lateral gusts causing the fan to turn.

Therefore, how to provide a wind power generator and its buffer structure can prevent the wind turbine from being turned by the instantaneous crosswind, causing the reciprocating stop and restarting, resulting in a decrease in power generation efficiency, thereby making the power generation performance of the small wind turbine better. It is widely used by users and is one of the most important topics at present.

In view of the above problems, an object of the present invention is to provide a wind power generator equipped with a buffer structure for buffering a wind turbine generator that encounters an instantaneous lateral gust, and the wind turbine reduces or stops the impeller rotation speed due to the bias. Make wind turbines continue to generate electricity.

In order to achieve the above objective, the present invention provides a wind power generator including a casing housing a power generating unit, an impeller connected to the power generating unit, and a tail connecting rod connected to the casing by a rotating shaft portion, and the rotating shaft The tail link can be rotated, and the tail is fixedly connected to the tail link. The opposite end of the rod connected to the casing and at least one buffer structure are respectively connected between the tail connecting rod and the casing.

According to the present invention, a wind power generator and a buffer structure thereof can prevent the wind turbine from being reciprocated due to gusts, and the blades are stopped and restarted, resulting in a decrease in power generation efficiency, thereby making the power generation performance of the small wind turbine more efficient. It is widely used by users.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a wind power generator and a buffer structure thereof according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same elements will be described with the same reference numerals.

Referring to FIG. 1 , FIG. 2A and FIG. 3A simultaneously, a wind power generator 10 includes a casing 11 , a tail connecting rod 13 , a tail 15 and at least one buffer structure 16 . The casing 11 is provided with a power generating unit (not shown). The impeller 12 is connected to the power generating unit to convert the rotating mechanical energy into electrical energy. The tail connecting rod 13 is connected to the casing 11 by a rotating shaft portion 14 and rotated. The shaft portion 14 can provide rotation of the tail connecting rod 13, and the tail portion 15 is fixedly connected to the opposite end of the tail connecting rod 13 connected to the casing 11, and the buffer structure 16 is respectively connected between the tail connecting rod 13 and the casing 11. The buffer structure 16 is a spring or a damping element having a returning mechanism, one end of which is connected to the tail connecting rod 13 and the other end is connected to the casing 11.

Please refer to FIG. 2A, FIG. 2B and FIGS. 3A and 3B at the same time. As shown in FIG. 2A, the impeller 12 turns is provided in a first wind direction inlet wind W1. When moving, the tail connecting rod 13 is in line with the impeller shaft 17 without an angle, and when the tail 15 is subjected to a second direction of entering the wind W2 different from the first direction (as shown in FIG. 2B), the tail 15 is subjected to the first The wind force of the wind entering the wind W2 in the two directions drives the tail connecting rod 13 to rotate with the rotating shaft portion 14 and forms an angle A with the impeller shaft 17 of less than 30 degrees. At present, as shown in FIG. 3A and FIG. 4A, if the buffer structure 16 is exemplified by a spring, the spring will provide a reaction force of the tail connecting rod 13 due to the elastic force of compression and stretching, so that the force of the tail connecting rod 13 is not As for the immediate transmission to the casing 11, the casing 11 and the impeller 12 are not easily deflected by the instantaneous second direction of the wind entering the wind W2, and when the second direction of the incoming wind W2 disappears, the elastic position of the spring can be used for the tail. The connecting rod 13 is returned to a state where the angle with the impeller shaft 17 is 0 degree, and the impeller 12 is continuously rotated to generate electricity efficiently.

If the buffer structure 16 is a damping mechanism with a returning mechanism, the damping absorbs the energy of the tail connecting rod 13 driven by the tail fins 15, so that the force of the tail connecting rod 13 is not immediately transmitted to the casing 11, causing the casing 11 and the impeller. The rotation of 12 turns to R, and when the second direction inlet wind W2 disappears, the damping element 16 having the replying mechanism can return the tail connecting rod 13 to an angle of 0 degree with the impeller shaft 17, so that the impeller 12 continues to operate. The wind turbine described above is disposed on a tower or structural support.

Referring to FIGS. 2A and 2B and FIGS. 4A and 4B simultaneously, unlike the above embodiment, the buffer structure 16 is in the same direction as the extending direction of the tail connecting rod 13 and is connected to the casing 11, and mainly provides a stretching by a spring. It The returning force resists the rotational force provided by the tail connecting rod 13 or provides a tensile resistance against the rotational force provided by the tail connecting rod 13 to prevent the impeller 12 and the casing 11 from entering the second direction due to the lateral moment. The wind W2 causes a rotational turn R, which is perpendicular to the empennage connecting rod 13 in the above embodiment, and at the same time utilizes the tension, the squeezing spring and the damping for different embodiments.

While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

10‧‧‧Wind Generator

11‧‧‧Shell

12‧‧‧ Impeller

13‧‧‧Tail link rod

14‧‧‧Rotary shaft

15‧‧‧tail

16‧‧‧ Buffer structure

17‧‧‧ Impeller shaft

W1‧‧‧First direction

W2‧‧‧ second direction into the wind

A‧‧‧ angle

R‧‧‧Rotation direction

Figure 1 is a side view of a wind power generator of the present invention.

Fig. 2A is a top view of the wind power generator of Fig. 1.

Figure 3A is a schematic diagram of the P portion of Figure 2A.

Figure 4A is a schematic illustration of another embodiment of the P portion of Figure 2A.

Figure 2B is a top view of the wind turbine generator in the first direction when it enters the wind in the second direction.

Figure 3B is a schematic diagram of the P portion of Figure 2B.

Figure 4B is a schematic view of another embodiment of the P portion of Figure 2B.

10‧‧‧Wind Generator

11‧‧‧Shell

12‧‧‧ Impeller

13‧‧‧Tail link rod

15‧‧‧tail

Claims (6)

A wind power generator includes: a casing housing a power generating unit; an impeller connected to the power generating unit by an impeller shaft, the first direction entering the wind to provide the impeller rotation; and a tail connecting rod, by a a rotating shaft portion is connected to the casing, and the rotating shaft portion can provide a rotary swing of the tail connecting rod; a tail wing fixedly connected to the tail connecting rod and disposed at the other end of the casing connected to the tail connecting rod And a single buffer structure, which is respectively connected to the tail connecting rod and the casing, one end of the buffer structure is connected with the tail connecting rod, and the other end is connected with the casing, when the tail is subjected to a second direction of entering the wind The tail connecting rod forms an angle with the impeller shaft. A wind power generator includes: a casing housing a power generating unit; an impeller connected to the power generating unit by an impeller shaft, the first direction entering the wind to provide the impeller rotation; and a tail connecting rod, by a a rotating shaft portion is connected to the casing, and the rotating shaft portion can provide a rotary swing of the tail connecting rod; a tail wing fixedly connected to the tail connecting rod and disposed at the other end of the casing connected to the tail connecting rod And two sets of buffer structures disposed separately from each other in the casing, wherein each of the buffer structures has two buffer structures on opposite sides of the tail connecting rod, one end of each buffer structure is connected to the tail connecting rod, and One end is connected to the casing, and when the tail is subjected to a second direction of wind, the tail connecting rod forms an angle with the impeller shaft. The wind power generator of claim 1 or 2, wherein any one of the buffer structures is a spring or a damping element having a returning mechanism, and when the external force disappears, the replying mechanism of the damping element provides a reply The force can return the empennage link to an angle of 0 degrees to the axis of the impeller. The wind power generator of claim 2, wherein the buffer structure is perpendicular to the tail connecting rod, and at the same time, the buffering effect is achieved by the action of stretching and pressing. The wind power generator of claim 1, wherein the buffer structure is substantially the same as the extension direction of the tail connecting rod and is connected to the casing. A wind power generator according to claim 1 or 2, further comprising a tower connected to the casing.