JP2005233143A - Vertical blade vertical shaft wind mill - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vertical blade vertical shaft windmill capable of expanding blades in a low wind speed zone and positively utilizing lift in a high wind speed, and of adjusting blade angles in relation to wind. <P>SOLUTION: This vertical blade vertical shaft windmill does not depend on wind direction originally. Consequently, a wind direction plate is not used. A plurality of wind direction plates are arranged to rotate according to the wind direction and to open and close according to the wind speed. And angle adjustment of opening of the wind direction plate in relation to the wind direction of windmill blades is performed and wind power is effectively used. Opening of the windmill, the windmill blades, the connection plate and wind direction plate constructs a four joint link mechanism, the windmill blade is expanded in a radial direction at a low wind speed zone and blade angle is fixed at a time of the high wind speed zone. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vertical blade vertical axis wind turbine.

  Among the wind power generators, vertical-blade vertical axis wind turbines have recently tended to be used mainly as small power sources as prime movers that are less dependent on wind direction and are easier to drive at lower wind speeds than propeller-type horizontal axis wind turbines and have low wind noise. is there.

  The amount of wind power generation in Europe and the United States is 5 to 10% of the total power generation, and there is a background that wind power generation will become more important in the future than that in Japan, which is less than 1%.

  In particular, there is a need for a power generation device that uses small natural energy as an emergency power source for night lights, security lights, and communication devices in the event of a power failure in ordinary homes and shops.

In recent years, the development of solar power generation has been remarkable, but it has the disadvantage that the amount of power generation is drastically reduced in cloudy weather, rainy weather and nighttime when sunlight is weak. As an improvement measure, the hybrid type that combines photovoltaic power generation and wind power generation has also been realized, but the cost is inevitably increased compared to solar power generation or wind power generation alone. Therefore, there is a need for wind power generation that compensates for the shortcomings of solar power generation. On the other hand, wind conditions vary depending on the location. In coastal and mountainous areas, there are areas where the annual average wind speed is several meters per second or more. In order to perform wind power generation with low noise, a vertical blade type vertical axis type wind turbine tends to be used more frequently than a propeller type. The following patent documents are reference examples. Among these, Patent Document 1 is provided with blade opening control means, wind direction sensing and control mechanism for wind direction in order to efficiently use lift, but it has a drawback that is too complicated to be applied to a small windmill. Non-Patent Document 1 describes a Lumiille ventilator using a four-bar linkage mechanism and a Bukanan outer wheel (Morgan water wheel) that are referenced by the present invention.
JP 2003-155972 A JP 2000-145612 A JP 2002-317749 A Edited by Shigeru Ito “Encyclopedia of Mechanisms”, Science and Engineering, 1995

  The problem to be solved is to drive in the low wind speed region as much as possible and to rotate efficiently in the high speed region. For this purpose, it is important to have means for adjusting the wind turbine blade angle according to the wind direction and the wind speed.

  In the present invention, when a plurality of vertical blades arranged around the vertical wind turbine shaft are on the side receiving wind when rotating in a low wind speed region, the wind receiving area is large, and the wind on the opposite side is desired to be avoided. In some cases, the wind direction plate 2 is provided with a pivot shaft which is eccentric from the wind turbine shaft in the low wind speed region and coincides with the wind turbine shaft shaft in the high wind speed region. If the connecting plates are connected between the other shafts arranged away from the support shaft, the vertical blades on the side of the wind direction plate 2 open in the radial direction toward the wind when the wind direction plate faces the wind. The vertical wing on the side is in a folded state, and the wind turbine shaft rotates because there is a difference in the moment of wind on both sides with the wind direction plate 1 as a boundary. In the high wind speed range, the wind direction plate 2 approaches the wind direction plate 1 and the connecting plate pivot shaft arranged on the wind direction plate 2 rotates in alignment with the wind turbine axis. The wind direction plates 1 and 2 that follow the wind direction and operate with high efficiency are characterized in that the angle of the wind direction plate 2 is variable depending on the wind speed by pivotally supporting the respective ends.

  The vertical wing vertical axis wind turbine of the present invention is installed on the roof of a house, in a garden, a park, a passage or the like, and is effective as a temporary power source in an emergency or emergency.

  When rotating in the low speed range, the wind turbine blade pivoted parallel to the wind turbine shaft at the tip of the arm projecting from the wind turbine shaft (main shaft) and the connecting plate pivoted on another shaft arranged on the wind turbine blade are used as the wind direction plate. The problem is solved by utilizing a four-bar linkage mechanism that is pivoted and pivoted by another wind direction plate pivoted by a fixed frame that supports the wind turbine shaft.

  FIG. 1 is a perspective explanatory view when wind starts to blow from the lower left direction to the upper right direction in one embodiment of the device of the present invention. The wind direction plate 1 and the wind direction plate 2 are open like arrows from the windward to the leeward.

  An illustration of a speed-up gear, a generator, a centrifugal clutch, a wind direction plate swing prevention device (damper), a voltage control device, a storage battery, and the like connected to the wind turbine shaft are omitted.

The fixed frame is fixed integrally with the equipment box, the windmill is held by the windmill shaft, and the windmill shaft is supported by the equipment box.

  The wind direction plate 1 is supported by a fixed frame, and its rotational axis coincides with the wind turbine axis. The wind direction plate 2 has its tip end pivoted at the tip end of the wind direction plate 1 and pivotally supports the connecting plate at the substantially central portion.

  FIG. 2 is an explanatory plan view of the same embodiment. The other end of the wind direction plate 2 pivoted to one end of the wind direction plate 1 is like a tip of an arrow by the action of a push spring attached to push the wind direction plates 1 and 2 open. Shows the state in the low wind speed range that is wide open.

  The wind direction plate 2 and the wind direction plate 1 have a high wind speed range in which the wind direction plates open to each other by a rotational force of a push spring, a magnetic repulsion force (not shown), a torsional blade (not shown), etc. in a low wind speed range. Are arranged so that the connecting plate pivot support axis arranged on the wind direction plate 2 coincides with the wind turbine axis.

  The claws are pivotally supported on the wind direction plate 1 with respect to the claw wheel held on the wind turbine shaft. Thus, when the wind direction plate rotates along the wind direction, the wind turbine can be accelerated only in the direction in which the claw wheel and the claw mesh with each other. A claw for another claw wheel held by the generator shaft is pivotally supported by a fixed frame to maintain the direction of rotation. This configuration has an effect that the wind direction plate rotates first when the wind begins to blow, and the windmill is simultaneously activated by the claw wheel and the claw.

  FIG. 3 shows a state in which the wind direction plate 1 and the wind direction plate 2 are overlapped and the connecting plate axis of the wind direction plate 2 is aligned with the wind turbine axis in the high wind speed region. FIG. 4 is a front explanatory view showing that the wind direction plates 1 and 2 rotate in the fixed frame and the windmill rotates in the wind direction plate.

  It is used as an emergency power source for night lights, security lights, and emergency communication equipment for small houses, roads, and parks.

It is a perspective explanatory view of a stationary state. (Example 1) It is plane explanatory drawing of a stationary state. (Example 1) It is a plane explanatory view in high-speed operation. (Example 1) It is front explanatory drawing in high-speed operation | movement. (Example 1)

Explanation of symbols

1 windmill axis 2 windmill
3 wings
4 Wind direction plate 1
5 Wind direction board 2
6 Frame 7 Connecting plate 8 Equipment box 9 Wind direction plate shaft 10 Claw wheel 11 Same claw 12 Push spring

Claims (2)

  Vertical blades Vertical axis Windmill rotation axis (hereinafter simply referred to as the windmill rotation axis), a plurality of arms of the same length are projected in the horizontal direction, and the vertical blade is supported in parallel with the windmill rotation axis at the tip. Turnable. When the wind turbine rotates in a direction against the wind direction when the wind turbine rotates, the wind resistance is folded small, and when receiving the wind, the wing is expanded to increase the wind receiving area. A four-joint link mechanism comprising a pivotable connecting plate that connects to a shaft disposed at a position that is parallel and eccentric from the wind turbine rotation axis of the wind turbine rotation shaft, and the eccentric shaft center due to a change in wind speed is the wind turbine rotation shaft A vertical wing vertical axis wind turbine comprising an adjusting mechanism capable of moving to a position coinciding with a heart.     It has a frame-type wind direction plate that goes in the direction of the wind when the wind direction changes, and has two sets of latch mechanisms by a claw wheel and a claw to regulate the direction of the wind direction plate and the wind turbine in one direction. The other set is disposed between the windmill rotating shaft and the wind direction plate 1 and between the windmill rotating shaft and the fixed frame. The wind direction plate is composed of a wind direction plate 1 that is pivotally supported by a fixed frame and a wind direction plate 2 that is pivotally supported by the wind direction plate 1, and the wind turbine is disposed inside these wind direction plates and the wind turbine shaft, the fixed frame and the wind direction plate that support the wind turbine shaft. The axes of 1 coincide. A vertical-blade vertical axis wind turbine characterized in that a wind direction plate and a wind turbine that rotate to respond to changes in the wind direction always rotate in one direction by the action of a latch mechanism.

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