Wind collector and wind power generator

Abstract

To provide a wind collection device by which a wind in a horizontal direction outside of the device can be surely taken into the device and changed into a vertical direction, and a local production / local consumption type wind power generation apparatus.SOLUTION: A wind collection device 1 comprises: an introduction side end 2 provided at one side of a top-bottom axis O; an exhaustion-side end 3 provided at the other side; and an annular body 4 which is provided between the ends so as to be separated away from the ends. The annular body 4 forms a cone 41 the apex portion of which is removed and which includes an internal passage 42 where external air A can be circulated vertically. An exhaustion gap Go is formed between the exhaustion-side end 3 and the annular body 4. The exhaustion gap Go is opened in an omnidirectional manner toward the external air A around the top-bottom axis O and connected to the internal passage 42 of the annular body 4. A passage cross-sectional area of the exhaustion gap Go is reduced as approaching the top-bottom axis O from an outer edge of the exhaustion-side end 3. It is preferable that a plurality of annular bodies 4 are disposed between the ends 2 and 3 while being separated respectively.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a wind collecting device and a wind power generating device, and more specifically to a wind collecting device and a wind power generating device that can take in horizontal wind outside the device and change it to a vertical direction inside the device. [Background technology]

[0002] In recent years, wind turbines used in wind power generation systems are divided into two main types based on purpose and output: one is the wind turbine for large-scale power generation systems that supply electricity for the daily lives of the people and for economic activities, and the other is the wind turbine for small-scale local production and consumption power generation systems that supply a small amount of electricity to light the outdoor lights of a home.

[0003] (Problems with the Prior Art) A problem with conventional locally produced wind power generation devices is that in areas with heavy snowfall in the winter, snow accumulates on the device, preventing the windmill from rotating and ultimately preventing the device from generating electricity. For this reason, it is desirable to be able to generate electricity while preventing snow from accumulating on the windmill.

[0004] A large amount of electricity can be generated by collecting outdoor wind, taking it into the device, and installing a windmill where the wind speed is the highest and rotating it. However, the direction of the wind outdoors is usually not constant, but changes constantly from moment to moment, and it can blow from any direction within 360 degrees around the device. For this reason, it is desirable for wind power generation devices to be able to generate electricity by responding (controlling) to the wind direction outdoors in all directions.

[0005] Furthermore, wind power generation equipment installed outdoors is generally an obstacle to the wind around the equipment. Therefore, even if an inlet for collecting wind or an air guide passage is provided inside the equipment, the wind often does not enter the inlet as the designers wished, but simply passes around the equipment (obstacle). In other words, the outdoor wind passes around the obstacle as if it is trying to escape from the power generation equipment.

[0006] This undesirable flow phenomenon occurs because the air guide passage has a greater fluid resistance than the unconstrained external space surrounding the device, even if the air pressure inside the air guide passage can be lowered to a negative pressure.

[0007] (Regarding prior patent documents) Patent documents 1 to 3 are cited as examples of prior art for this type of wind power generator. Patent document 1 discloses a wind power generator that generates power from wind in all directions by connecting one or more wind collecting units to one or more power generating units. However, the inventors, who are experts in fluid dynamics, believe that when the generator described in this document is used, the wind around the periphery of the generator cannot be easily taken in by the wind intake with high fluid resistance separated by a partition plate, and in fact it can be easily assumed that the wind simply escapes around the generator.

[0008] Patent Document 2 discloses a wind collecting device that collects wind from unspecified directions toward a vertical axis wind turbine. This wind collecting device is equipped with wind collecting blades arranged in a forest around the wind turbine and radially spreading out from the wind turbine, and wind collecting members with wind collecting surfaces that cover the top and bottom of the wind collecting blades.

[0009] In the wind collecting device of Patent Document 2, the wind collecting passage from the outer periphery of the device to the central axis is divided into multiple wind collecting blades, and a wind turbine is rotatably supported inside it. However, the inventors believe that outdoor wind does not enter such a wind collecting passage with high fluid resistance, and instead the outdoor wind passes through the device along the outer periphery of the main body of the device like a fluid flow around a cylinder.

[0010] Furthermore, Patent Document 3 discloses a wind collecting system for wind power generation that collects wind from around buildings from any direction. This wind collecting system has multiple wind collecting sections on the entire surface of each side wall of the building, and a negative pressure generating chamber on the roof of the building. The wind collecting sections and the negative pressure generating chamber are connected by air guide pipes and a wind power generation room.

[0011] It is interesting that Patent Document 3 generates negative pressure in the negative pressure generating chamber, takes it in the wind collecting section on the side wall, and releases the wind from the building that has passed through the wind power generation chamber, but unless the outside air (natural wind) from the roof passes reliably through the flow path of the negative pressure generating chamber, the pressure inside the chamber cannot be negative, and the wind from the building that has passed through the wind power generation chamber cannot be exhausted. In the opinion of the inventors, it is more natural for the outside air (especially the outside air on the rooftop where there are no obstacles) to flow around the negative pressure generating chamber rather than entering the flow path inside the negative pressure generating chamber, which has high flow path resistance.

[0012] Furthermore, the wind collection system of Patent Document 3 is an extremely large-scale system that utilizes the entire building, making it difficult to apply to the above-mentioned small-scale local production and consumption type wind collection system. [Prior art documents] [Patent documents]

[0013] [Patent Document 1] JP 2013-127235 A [Patent Document 2] International Publication No. 2011 / 161821 Brochure [Patent Document 3] JP 2005-098256 A Summary of the Invention [Problem to be solved by the invention]

[0014] The present invention has been made in consideration of the above circumstances, and has an object to provide a wind collecting device that can reliably take in horizontal wind outside the device and change it to a vertical direction inside the device.

[0015] In addition, the present invention aims to provide a locally produced, locally consumed wind power generation device that can reliably take in horizontal wind outside the device, change it to a vertical direction, and use that wind to rotate a power-generating wind turbine. [Means for solving the problem]

[0016] That is, the present invention has, for example, the following configurations and features. (Aspect 1) An introduction end portion provided on one side of a top-bottom axis extending in a vertical direction; An exhaust side end portion provided on the other of the top and bottom axes; an annular body provided between the inlet end and the exhaust end so as to be spaced apart from each end and having a central axis coaxial with the top and bottom axes; A wind collecting device comprising: the annular body is a cone with an apex portion removed and an internal passage through which external air can flow upward and downward, the converging side of the cone facing the exhaust side end and the diverging side of the cone facing the introduction side end, an exhaust gap is formed between the exhaust side end and the annular body, and an introduction gap is formed between the introduction side end and the annular body, The exhaust gap is open to the outside air in all directions around the axis and is connected to the internal passage of the annular body, A flow passage cross-sectional area of ​​the exhaust gap decreases from the outer edge of the exhaust side end toward the axis, The external air that flows horizontally into the inlet gap changes its flow to a vertical direction, enters the internal passage, and merges with the external air flowing through the exhaust gap. And, The outer peripheral side wall and the inner peripheral side wall of the annular body each have a cross-sectional shape that is curved so as to protrude outward. , A wind collecting device characterized by: (Aspect 2) the introduction end defines a bowl shape, the bottom of the bowl narrowing toward the axis and extending toward the interior passage of the annular body; 2. The wind collecting device according to claim 1, (Aspect 3) The flow passage cross-sectional area of ​​the internal passage of the annular body is smaller on the narrower side than on the divergent side. 3. The wind collecting device according to aspect 1 or 2. (Aspect 4) The annular bodies are arranged in a plurality of rows between the inlet end and the exhaust end, and are spaced apart from each other vertically, An annular gap is formed between adjacent annular bodies, The annular gap is open in all directions toward the outside air around the central axis and is connected to the internal passage of the annular body. Aspect 1 to 3 characterized by the above 3 13. The wind collecting device according to any one of claims 1 to 12. (Aspect 5) Aspect 1~ 4 The wind collecting device according to any one of the preceding claims, and a wind turbine for wind power generation is rotatably mounted in the internal passage of the annular body. A wind power generating device comprising: (Aspect 6) The inlet end or the exhaust end arranged on the sky side is used as a snow protection roof, and For snow protection Solar panels are installed on the exterior surface of the roof. An embodiment characterized by the above 5 The wind power generation device according to claim 1. Effect of the Invention

[0017] According to the wind collecting device of the present invention, an exhaust gap is formed through which outside air can pass in all directions around the axis. In other words, a part of the wind collecting device (the exhaust gap) is open in all directions (open). As a result, the flow resistance in this gap is as low as the flow resistance around the periphery of the wind collecting device, and outside air can flow in.

[0018] In addition, the air collection device of the present invention is configured so that the exhaust gap is shortest at the axis of the device. In other words, since the flow passage area decreases from the outer periphery of the device to the center of the device, the air that enters the device increases in flow velocity the most (in other words, the pressure decreases the most) when passing near the axis (Bernoulli's theorem). In other words, the exhaust gap becomes the negative pressure generating part.

[0019] Furthermore, since the annular body of the air collecting device of the present invention has an internal passage formed in it that guides external air into the device and connects to the exhaust gap, wind that collides horizontally near the annular body passes through the internal passage, changes direction vertically, and is then guided to the exhaust gap, which is the negative pressure generating section, and exhausted outside the device.

[0020] In addition, the internal passage of the wind collector or wind power generator of the present invention is tapered toward the negative pressure generating section, so the flow rate gradually increases (pressure decreases), promoting the flow of wind from the internal passage to the exhaust gap. By mounting a power-generating wind turbine at this point of increased flow rate, it becomes possible to generate electricity efficiently.

[0021] Furthermore, by arranging multiple such annular bodies with internal passages in series in the wind collecting device or wind power generating device of the present invention, multiple wind turbines can be placed along a single wind flow collected within the device, thereby realizing cascaded power generation. [Brief description of the drawings]

[0022] [Figure 1] FIG. 2 is a diagram showing an outline (numerical analysis model) of a wind collecting device of a comparative example (early stage of study by the present inventors). [Diagram 2] FIG. 13 is a diagram showing the results of numerical analysis (pressure distribution and flow velocity distribution) in a comparative example model. [Diagram 3] 1A and 1B are a perspective view and a cross-sectional view showing a wind collecting device of a first embodiment. [Figure 4] FIG. 11 is a perspective view showing a wind collecting device of a second embodiment and a partially cutaway perspective view thereof. [Diagram 5] 13 is a graph comparing the results of numerical analysis (flow velocity) of Example 3 and Comparative Example. [Figure 6] FIG. 13 is a diagram showing the results of numerical analysis (pressure distribution and flow velocity distribution) for a three-stage annular body model in Example 3. [Figure 7] FIG. 13 is a diagram showing a prototype of a wind collecting device and a wind turbine according to the present invention (Example 4) and the results of a flow velocity test. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] The present invention will be described below based on the embodiments shown in the drawings, but the present invention is not limited to the specific embodiments described below. In addition, the same reference numerals are used for the same or corresponding parts in each drawing.

[0024] (Comparative example (initial concept plan)) The present inventors have studied a wind collector 101 that can be equipped with a power-generating wind turbine and can redirect external lateral (horizontal) wind A to a vertical direction and take it in. Figures 1(a) and (b) show an outline (numerical analysis model described below) of the wind collector 101 as a concept proposal from the early stages of the study (hereinafter also referred to as the "comparative example"). The wind collector 101 of this comparative example is provided with upper and lower disks 102, 103 spaced apart from each other (disks with tapered cross-sectional shapes in the illustration), and a hollow cylinder 104 is connected to the center of the lower disk 103 and extends downward. Both the top 104a and the bottom 104b of the hollow cylinder 104 are open (i.e., perforated), and the top 104a of the hollow cylinder 104 perforates the lower disk 103, so that the internal flow path 105 of the hollow cylinder 104 is connected to the gap (negative pressure generating portion) 106 between the disks 102, 103.

[0025] (Bernoulli's principle) By the way, it is known that as the flow velocity of fluid A increases, its pressure decreases (Bernoulli's principle). It is also known that fluid A, such as air, flows from a point of high pressure to a point of low pressure.

[0026] In light of the above-mentioned theorem, in the wind collecting device 101 of the comparative example shown in Fig. 1, the gap 106 between the disks 102 and 103 expands vertically as it approaches the outer periphery and narrows as it approaches the center of the device (vertical axis O), so the flow speed of the wind A passing between the disks 102 and 103 increases near the center of the device (vertical axis O) and the pressure decreases (i.e., the gap 106 becomes a negative pressure generating part). Also, in the internal flow path 105 of the hollow cylinder 104, the outside air A is sucked from the opening hole of the bottom 104b toward the through hole of the top 104a connected to the negative pressure generating part 106 where the pressure is relatively reduced. In other words, the outside wind A blowing horizontally changes its flow to vertical and is collected into the wind collecting device 101.

[0027] (Points to improve on in the initial concept) However, the wind collecting device 101 of the comparative example at the beginning of the study has the following points to be improved. First, (1) it cannot be said that the structure makes it easy for wind A to be collected from the openings in the bottom 104b of the hollow cylinder 104. In other words, unless a sufficient pressure drop is achieved in the negative pressure generating unit 106, the horizontal wind A cannot be taken into the internal flow path 105 and changed to a vertical direction, and even if a power-generating wind turbine can be placed in this internal flow path 105, it is difficult to obtain the desired rotation of the wind turbine and the desired power generation capacity. (2) Wind A that hits parts other than the bottom 104b, for example, near the outer wall of the body 104c of the hollow cylinder 104, simply passes around the body 104c and cannot be used for wind collection at all. EXAMPLES

[0028] 3(a) and (b) are a perspective view and a cross-sectional view showing the wind collecting device 1 (1A) of the present invention (Example 1). The wind collecting device 1 can be used as a wind power generator by additionally mounting a power generating windmill 7 (see also FIG. 7(b)) described later. As shown in each drawing of FIG. 3, the wind collecting device 1 mainly comprises an inlet end portion 2, an exhaust end portion 3, and an annular body 4. Support rods 5 are provided to support the above-mentioned elements 2 to 4 at predetermined positions and intervals within the wind collecting device 1. In the illustrated example, three support rods 5 are installed along the outer periphery of the annular body 4, spaced apart from each other by 120° with respect to the vertical axis O. In addition, a support pole 6 may be provided to hold the wind collecting device 1 at a predetermined height from the ground (not shown). Next, details of each element will be described.

[0029] (Introducing end) The introduction side end 2 is provided on one side of the vertical axis O (upper side in FIG. 3, lower side in FIG. 4). The introduction side end 2 forms a bowl-shaped body 21. More specifically, the bottom 22 of the bowl-shaped body 21 extends from the outer periphery toward the center (vertical axis O) toward the internal passage 42 of the annular body 4.

[0030] (Cyclic body) Between the inlet end 2 and the exhaust end 3, at least one annular body 4 (three annular bodies 4a, 4b, and 4c in the figure) is provided so as to be spaced apart from each end 2, 3. The annular body 4 has a central axis O coaxially with the vertical axis O. R That is, the inlet end 2, the exhaust end 3, and the annular body 4 are arranged on the same axis. Here, the main body of the annular body 4 forms a cone 41 with a vertex portion (not shown) removed. Inside the cone 41, an internal passage 42 is provided through which the external air A can flow vertically up and down. In the illustrated example, the converging side 41a of the cone 41 is oriented toward the exhaust end 3, and the diverging side 41b is oriented toward the inlet end 2. The cross-sectional area of ​​the flow passage of the internal passage 42 is largest at the diverging side 41b, and gradually decreases toward the narrowing side 41a. Therefore, the flow velocity of the air flowing through the internal passage 42 increases and its pressure decreases as it advances toward the narrowing side 41a.

[0031] (Power generating wind turbines) Furthermore, in order to use the wind collecting device 1 as a wind power generator, a power generating windmill 7 (hereinafter also simply referred to as a "windmill"; see FIG. 7(b)) and a rotating shaft (not shown) for rotating the windmill 7 may be additionally installed in the internal passage 42. In particular, from the viewpoint of power generation efficiency, it is preferable to mount the windmill 7 on the end narrowing side 41a where the flow rate of the taken-in fluid A becomes high. Also, in the wind collecting device 1, a generator (not shown) may be installed inside 23 of the inlet end 2 or inside 33 of the exhaust end 3 and connected to the rotating shaft, or a generator connected to the windmill 7 may be installed outside the wind collecting device 1, or a windmill formed integrally with the generator may be mounted. Furthermore, the wind collecting device 1 may be configured to simultaneously perform solar power generation by mounting a solar panel (not shown) on the outer surface of the inlet end 2 (exhaust end 3 in another embodiment 2) arranged on the sky side.

[0032] (Cross-sectional shape of the annular body) The cross-sectional shape of the annular body 4 will also be mentioned. Completely different from that of a rotor of a normal aircraft engine, the annular body 4 of the embodiment is characterized in that the outer peripheral side wall 41c and the inner peripheral side wall 41d each have a curved cross-sectional shape that bulges outward. By adopting such a unique cross-sectional shape, the fluid A passing through the annular body 4 does not easily separate from the outer peripheral side wall 41c and the inner peripheral side wall 41d, and vortex formation is also less likely to occur near the boundary of the annular body 4.

[0033] (Exhaust end) An exhaust side end 3 is provided on the other side of the vertical axis O (lower side in the example of FIG. 3). This exhaust side end 3 is a disk 31 (dorayaki-shaped in the illustrated example), and has a curved surface 32 that gradually rises toward the annular body 4 as it approaches the vertical axis O from the outer edge. Between the curved surface 32 and the annular body 4, an exhaust gap G connected to an internal passage 42 is provided. o This exhaust gap G o is open to the outside in all directions around the axis O. Also, the exhaust gap G in the direction of the axis O o The distance is the lead-in gap G i and annular gap G RTherefore, as shown in FIG. 3(b), a relatively large amount of outside air A (A1) enters the exhaust gap G. o Furthermore, the exhaust gap G o is gradually narrowed from the outer periphery (outer edge) of the disk 31 due to the presence of the curved surface 32 described above, and is configured to be shortest (where the flow path cross-sectional area is smallest) at the center (vertical axis O).

[0034] (Suppression of fluid resistance and generation of negative pressure) Exhaust gap G between exhaust end 3 and annular body 4 o Since the above-mentioned flow path structure is adopted, the outside air A behaves as follows. The direction of the outside air A (A1) around the wind collecting device 1 may change from moment to moment, but the exhaust gap G o Since the gap is open in all directions around the axis O, the flow resistance is extremely small, and the external air A1 from any direction can flow through the gap G o In addition, the exhaust gap G defined by the curved surface 32 of the exhaust side end 3 and the cone 41 of the annular body 4 can pass through. o Since the distance L is shortest at the central axis O in cross-sectional view (where the cross-sectional area of ​​the flow path is the smallest), according to Bernoulli's theorem, the external air A1 passing horizontally has the greatest flow velocity and the lowest pressure near this axis O.

[0035] On the other hand, exhaust gap G o is connected to the internal passage 42 in the vertical direction near the vertical axis O. In other words, the internal passage 42 is connected to the exhaust gap G o and the lead-in gap G, which will be described later. i Therefore, the exhaust gap G o is the exhaust gap G o The horizontal external air A1 entering the intake gap G is passed through while changing its flow velocity (pressure). i The horizontal external air A2 that has entered the air intake 41 is also taken in via the internal passage 42, and the external air A1 and A2 are ultimately discharged to the outside of the wind collecting device 1. Therefore, the introduction gap G iThe flow direction of the outside air A2 passing through the internal passage 42 changes from horizontal to vertical to horizontal.

[0036] (Installation of multiple ring bodies) The annular body 4 has a plurality of annular gaps G between the inlet end 2 and the exhaust end 3. R It is more preferable that the wind turbines 7 are arranged at a distance of 100 mm from each other. Since at least one wind turbine 7 can be mounted in each ring-shaped body 4, one or more wind turbines 7 can be stored in one wind collecting device 1 depending on the desired power generation output. Please refer to Fig. 3(b) for the area W in which the wind turbines 7 can be mounted. Fig. 3(b) shows that the wind turbines 7 are mounted only on the middle ring-shaped body 4b.

[0037] In this manner, in this embodiment, by arranging multiple annular bodies 4a-4c with internal passages 42 in series, multiple wind turbines 7 can be placed along the flow of a single wind A collected within the wind collecting device 1, thereby realizing cascaded power generation.

[0038] (Annular gap) Annular gap G between the annular bodies 4 R Since the exhaust end 3 is open to the outside in all directions around the axis O, the flow resistance is low, and the horizontal external air A3 flows through the annular gap G. R Therefore, in this embodiment, the outside air A is easily passed through the introduction gap G as shown by the reference symbols A2 and A3. i As well as each annular gap G R It is therefore possible for a larger amount of outside air A1 to A3 to be taken in from the entire outer circumferential surface of the wind collecting device 1, as compared to the initial design which is the comparative example described above.

[0039] (Operation of wind collector) The main elements 2 to 4 constituting the wind collector 1 have been described above, but we will now review how the wind collector 1 works when in use. i and the exhaust gap G on the other end oand at least one annular gap G provided therebetween. R There are three types:

[0040] The exhaust gap G is extremely long in the direction of the vertical axis O and is open in all directions horizontally except for the location where the support rod 5 is installed. o A large amount of outside air A1 can pass through, and the pressure is lowest near the axis O.

[0041] On the other hand, the introduction gap G i and annular gap G R Similarly, the exhaust gap G is open in all directions horizontally and is in a negative pressure state. o and in the direction of the celestial axis O, so the gap between them G i ,G R The external air A2 and A3 flowing nearby are introduced through the inlet gap G i and annular gap G R into the internal passage 42 and the exhaust gap G o The air flows through the exhaust gap G. o and is discharged from the wind collecting device 1. At this time, when the wind passes through a portion (e.g., the above-mentioned region W) where the flow path of the internal passage 42 of each annular body 4 (4a, 4b, 4c) is narrowest, if the wind turbine 7 is placed at that portion, it can be rotated efficiently. EXAMPLES

[0042] (Modification of the upside-down arrangement) The wind collecting device 1 of the present invention is not limited to the above-mentioned embodiment 1, and various modified examples are possible. For example, the main elements 2 to 4 of embodiment 1, except for the support 6, may be arranged upside down, as in the wind collecting device 1B of embodiment 2 shown in each drawing of FIG. 4. In this upside-down configuration, the introduction side end 2 is arranged downward (on the ground side) and the exhaust side end 3 is arranged upward (on the sky side), so that the introduction gap G i and annular gap G R The outside air A2 and A3 that entered the exhaust gap G changes direction vertically upward and o The air is then discharged outside the wind collecting device 1 via the

[0043] (Advantages of upside down placement) In the configuration shown in the second embodiment, the narrowing side 41a of each ring-shaped body 4 is located at the top and the widening side 41b is located at the bottom, so to speak, in an "unfolded umbrella" state. Therefore, even if the wind collecting device 1 is installed outdoors for a long period of time, dead leaves, garbage, etc. are unlikely to enter the vicinity of the wind turbine 7 inside the ring-shaped body 4.

[0044] (Variations with rings of different sizes) For example, although each of the ring-shaped bodies 4 arranged in the first and second embodiments has the same shape and dimensions, this is not limiting. Although not shown, it is also possible to arrange ring-shaped bodies 4 in which the size of the cone 41 is gradually reduced. For example, a configuration may be adopted in which the size (diameter) of the ring-shaped body 4 closest to one end (inlet end 2) is the largest, and the size of the ring-shaped body 4 is gradually reduced as it approaches the other end (exhaust end 3). With such a configuration, it is expected that a larger amount of external air A2, A3 is passed through the wind collecting device 1 (wind turbine 7), thereby increasing the power generation capacity. EXAMPLES

[0045] (Performance evaluation by numerical analysis) Next, we carried out a numerical analysis to understand the characteristics of the fluid flowing in the above-mentioned initial model (comparative example) and the wind collecting device 1 of the present invention. m was set to 3.3 m / s, which corresponds to the annual average flow velocity in Niigata City. Other analysis parameters are shown in Table 1 below.

[0046] [Table 1]

[0047] The constraints were that the width was within 600 mm, and the length was unlimited. In addition, in all the numerical analysis models, the calculations were performed without the wind turbine 7 being placed.

[0048] (Numerical analysis results of the initial model (comparison example)) As mentioned above, FIG. 1 shows the wind collecting device 101 (numerical analysis model) of the comparative example. FIGS. 2(a) and (b) show the pressure distribution and flow velocity distribution of the comparative example obtained by this numerical analysis. As a result, the average flow velocity of fluid A passing through the area enclosed by the square in FIG. 2(b) in the internal flow path 105 of the hollow cylinder 104 as the area where the wind turbine can be mounted is V W = 0.78 m / s (meters per second). The above analysis results are also shown as Sample A in Figure 5, which will be described later.

[0049] A numerical analysis was also carried out on the wind collecting device 1 of the present invention (Example 3) under the same analytical conditions as the comparative example. Specifically, models in which the annular bodies 4 are arranged in one stage, two stages, or three stages were constructed and calculations were carried out (see Samples B to D in FIG. 5). FIG. 5 shows the flow velocity V of the fluid A flowing into the wind turbine mountable area W of each of the models Samples A to D. W This is a graph comparing the above.

[0050] From FIG. 5, the flow velocity V W The result is that the flow velocity V of the fluid A passing through the region W increases as the number of annular bodies 4 increases, which is higher than the result of the model of the comparative example (Sample A). In addition, when comparing the analysis models of this embodiment (Samples B to D), the flow velocity V of the fluid A passing through the region W increases as the number of annular bodies 4 increases. W In the case of the model in which the three-stage annular body 4 is arranged (Sample D, see also reference numeral 1C in FIG. 6(a)), the inflowing main flow velocity V m Fluid A enters wind collector 1 at a speed of V = 3.3 m / s. W It was found that the turbine passes through the area W where a wind turbine can be installed while maintaining a high flow velocity of 2.08 m / s.

[0051] FIG. 6(a) shows an analytical model in which three stages of annular bodies 4 are arranged, and FIG. 6(b) and (c) show the pressure distribution and flow velocity distribution in the case where this model is numerically analyzed. From these results, it is clear that the external air A that collides with the wind collector 1 (1C) in the horizontal direction (from left to right in the figure) flows through the introduction gap G. i and annular gap G RThe exhaust gas then enters the exhaust gap G with great force, changes course vertically (downward), passes through the internal flow passage 42, and enters the exhaust gap G. o After merging with the wind collector 1C, it was found that the wind was discharged horizontally from the wind collector 1C. i and annular gap G R In the region where fluid A enters, the flow velocity is high, and the exhaust gap G o Now, the fluids A2 and A3 that have passed through the internal passage 42 and the exhaust gap G o It was found that the flow velocity is high in the downstream (discharge) area from the point where the fluid A1 flowing in from the upstream joins the fluid A2. EXAMPLES

[0052] (Prototype of wind collector) A wind collector 1D simulating the three-stage installation model (see Sample D in FIG. 5 and also 1C in FIG. 6(a)) that showed the highest fluid characteristics in the above-mentioned numerical analysis was actually prototyped and subjected to a wind tunnel experiment (see Example 4, FIG. 7(a)). In the wind tunnel experiment, a hot-wire anemometer probe was attached to the area W where a wind turbine can be mounted on the middle (second) stage of the annular body 4b, and the flow velocity V of fluid A, which is the junction of fluids A2 and A3 passing through said area W, was measured. W The measurement positions of the probe were set at four points within the above-mentioned area W, and measurements were taken twice at each point. In addition, the main flow velocity V of the fluid A flowing into the wind collector 1D in the wind tunnel was m was set to three conditions: 3 m / s, 5 m / s, and 7 m / s.

[0053] (Flow velocity measurement using prototype device) Figure 7(c) shows the main flow velocity V m The current velocity V in the wind turbine mounting area W for W (also called "through velocity"). The illustrated through velocity V W is the average flow velocity obtained by measuring four points twice. The horizontal axis is the main flow velocity V m The vertical axis shows the setting conditions of the main flow velocity V m Through-flow velocity V W The dashed line indicates 100% (measured passing velocity V W is the mainstream speed V mThe dashed line shows the ratio calculated by the numerical analysis described above. From Fig. 7(c), the main flow velocity V m The flow velocity V is about 90% of the W The flow velocity V is higher than the calculated values ​​of the analytical models shown in Figs. 5 and 6. W was found to have been actually obtained.

[0054] (Windmill rotation experiment) The inventors also prototyped a wind turbine 7 as shown in FIG. 7(b) and placed it in the wind turbine mounting area W (specifically, the second-stage annular body 4b) in the wind collecting device 1D. Then, the wind speed (main flow speed V m The wind collector 1D was placed under a condition where the wind speed was 10 m / s, and the rotation speed of the wind turbine 7 was measured using a high-speed camera.

[0055] (Windmill rotation experiment results) As a result, the main wind speed is V m = 10 m / s, it was found that the wind turbine 7 rotates at 70 rpm. In this way, it was confirmed that in the actual prototype wind collector 1D, the horizontal external air A changes its flow direction to vertical and flows into the wind collector 1D with great force, rotates the wind turbine 7 with great force, and is then discharged outside the wind collector 1D. [Industrial Applicability]

[0056] According to the present invention, it is possible to provide a wind collecting device that can reliably and forcefully take in horizontal wind (external air) inside the device and change it to a vertical direction, and to provide a locally produced and locally consumed wind power generation device that can use the taken-in wind to rotate a power-generating wind turbine.

[0057] The wind collecting device and wind power generating device of the present invention, which exhibit such remarkable effects, are not found in similar markets, nor have they been proposed in related academic societies, and therefore have extremely high industrial value and applicability. [Explanation of symbols]

[0058] 1, 1A, 1B, 1C, 1D Wind collector (or its analytical model) 2 Introduction end 3 Exhaust end 4,4a,4b,4c Cyclic bodies 5 Support rod 6 pillars 7. Windmills for generating electricity (windmills) 21 Bowl-shaped body 22 Bottom of the inlet end 23 Inside of the inlet end 31 Disc 32 Curved Surface 33 Inside the exhaust end 41 Cone 41a, 41b, 41c, 41d: narrowing side, widening side, outer peripheral side wall, inner peripheral side wall 42 Internal passage A, A1, A2, A3 Fluid (external air, wind) G i ,G o ,G R Inlet gap, exhaust gap, annular gap L Exhaust gap distance O,O R Vertical axis of the wind collector, central axis of the ring body V m ,V W Main flow velocity, flow velocity in the area where a wind turbine can be mounted (through flow velocity) W Wind turbine mounting area

Claims

1. An introduction end portion provided on one side of a top-bottom axis extending in a vertical direction; An exhaust side end portion provided on the other of the top and bottom axes; an annular body provided between the inlet end and the exhaust end so as to be spaced apart from each end and having a central axis coaxial with the top and bottom axes; A wind collecting device comprising: the annular body is a cone with an apex portion removed and an internal passage through which external air can flow upward and downward, the converging side of the cone facing the exhaust side end and the diverging side of the cone facing the introduction side end, an exhaust gap is formed between the exhaust side end and the annular body, and an introduction gap is formed between the introduction side end and the annular body, The exhaust gap is open to the outside air in all directions around the axis and is connected to the internal passage of the annular body, A flow passage cross-sectional area of ​​the exhaust gap decreases from the outer edge of the exhaust side end toward the axis, The external air that flows into the introduction gap in a horizontal direction changes its flow to a vertical direction, enters the internal passage, and merges with the external air flowing through the exhaust gap; and The outer peripheral side wall and the inner peripheral side wall of the annular body each have a cross-sectional shape curved so as to protrude outward. A wind collecting device characterized by:

2. the introduction end defines a bowl shape, the bottom of the bowl narrowing toward the axis and extending toward the interior passage of the annular body; The wind collecting device according to claim 1 .

3. The wind collecting device according to claim 1 or 2, wherein a flow passage cross-sectional area of ​​the internal passage of the annular body is smaller on the narrowing side than on the widening side.

4. The annular bodies are arranged in a plurality of rows between the inlet end and the exhaust end, and are spaced apart from each other vertically, An annular gap is formed between adjacent annular bodies, The annular gap is open in all directions toward the outside air around the central axis and is connected to the internal passage of the annular body. The wind collecting device according to any one of claims 1 to 3.

5. A wind collecting device according to any one of claims 1 to 4, and a wind turbine for wind power generation is rotatably mounted in the internal passage of the annular body. A wind power generating device comprising:

6. The inlet side end or the exhaust side end arranged on the sky side is used as a snow protection roof, and a solar panel is installed on the outer surface of the snow protection roof.

6. The wind power generating device according to claim 5.

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