Exhaust device

Abstract

Provided is an exhaust device capable of exhausting gas such as air by utilizing natural wind without using electric power or the like. An exhaust device 1 comprises an intake port 32 for taking in gas, and a gap 5a through which natural wind F1 passes, wherein the gap 5a has open surfaces a1 in a plurality of orientations so as to allow the natural wind F1 in each direction to pass therethrough, and generates a negative pressure region M in the gap 5a by passage of the natural wind F1, thereby exhausting the gas using the natural wind F1. The exhaust device 1 is provided with an upper member 2, a lower member 3, and one or more annular members 4. The upper member 2 has the gap 5a between the upper member 2 and an annular member 4a on the upper member 2 side among the one or more annular members 4. The lower member 3 has an intake port 32 and a lower member flow path 31 that communicates with the intake port 32 and through which the gas flows. The annular member 4 has opening portions 6a to 6d for passing the gas and the natural wind F1 at a central portion in a lateral direction (X direction), and has an outer shape that increases in diameter from the upper member 2 side toward the lower member 3 side.

Description

Exhaust device

[0001] The present invention relates to an exhaust device.

[0002] Conventionally, a technique has been proposed that utilizes natural wind to generate negative pressure by the Venturi effect and creates an airflow in the vertical direction. In Patent Document 1, it has been reported that an air collecting device using such a technique can be developed and applied to wind power generation.

[0003] Japanese Patent Application Laid-Open No. 2023-68986

[0004] The inventors of the present invention have found that by improving the air collecting device of Patent Document 1 and optimizing its shape to obtain an exhaust device, an exhaust device having excellent exhaust performance can be obtained. Note that the air collecting device of Patent Document 1 is fundamentally different in use and purpose from the exhaust device of the present invention, which aims to exhaust gases such as air, and thus does not fall under the well-known technology of the present invention.

[0005] An object of the present invention is to provide an exhaust device that can exhaust gases such as air using natural wind without using electricity or the like.

[0006] In order to solve such problems, the present invention provides an exhaust device including an air inlet for taking in gas and a gap through which natural wind passes. The gap has open surfaces in a plurality of directions so that the natural wind in each direction can pass through. By the passage of the natural wind, a negative pressure region is generated in the gap, and the gas is exhausted using the natural wind.

[0007] In the exhaust device according to the present invention, an upper member, a lower member spaced apart from the upper member in the vertical direction and arranged coaxially in the vertical direction below the upper member, and at least one annular member arranged coaxially in the vertical direction between the upper member and the lower member are provided. The upper member has the gap between the upper member and the annular member on the side of the upper member among at least one of the annular members. The lower member has the air inlet and a lower member flow path through which the gas flows in communication with the air inlet. The annular member has an opening for the gas and the natural wind to pass through at the central portion in the lateral direction, and has an outer shape that expands in diameter from the side of the upper member toward the side of the lower member.

[0008] In the exhaust device according to the present invention, if a plurality of annular members are provided, the gaps between adjacent annular members may have open surfaces in multiple directions so that natural wind from each direction can enter.

[0009] In the exhaust device according to the present invention, if a plurality of annular members are provided, the maximum diameter of the upper annular member can be larger than the maximum diameter of the lower annular member.

[0010] In the exhaust device according to the present invention, the bottom surface of the upper member may have a spherical shape that is convex downwards.

[0011] According to the present invention, it is possible to provide an exhaust device that enables the exhaust of gases such as air using natural wind without using electricity or other means.

[0012] This is a front view of an exhaust device according to a preferred embodiment of the present invention. This is a longitudinal cross-sectional view of an exhaust device according to a preferred embodiment of the present invention. This is a front view of an upper member according to another preferred embodiment of the present invention. This is a top view of an annular member 4a according to a preferred embodiment of the present invention. This is a top view of an annular member 4b according to a preferred embodiment of the present invention. This is a top view of an annular member 4c according to a preferred embodiment of the present invention. This is a top view of an annular member 4d according to a preferred embodiment of the present invention. This is a top view of a lower member according to a preferred embodiment of the present invention. This is a vector diagram of a simulation showing the exhaust flow from an exhaust device according to a preferred embodiment of the present invention. This is a photograph showing the experimental apparatus using a prototype model.

[0013] Preferred embodiments of the present invention will be described below with reference to the drawings. However, the present invention is not limited to the following description, and various modifications and changes are possible for those skilled in the art based on the gist of the invention as described in the claims or disclosed in the embodiments for carrying out the invention. Such modifications and changes are also within the scope of the present invention. Furthermore, all documents referenced herein are incorporated herein by reference in their entirety.

[0014] A preferred basic structure of the exhaust device 1 will be described with reference to Figures 1 to 8. Figures 1 and 2 are a front view and a longitudinal cross-sectional view of the exhaust device 1 according to a preferred embodiment of the present invention. Figures 3 to 8 are front views or top views of each component according to a preferred embodiment of the present invention.

[0015] <Overall Configuration> The exhaust device 1 generates a negative pressure region M inside by the passage of natural wind, such as a crosswind F1 as shown in Figures 1 and 2. This negative pressure region M generates an upward airflow F2 in the Y direction shown in the figures, and the structure further promotes the upward airflow F2. According to the exhaust device 1 of this embodiment, gases such as air can be exhausted with high performance by utilizing natural wind F1 without using electricity or the like.

[0016] The exhaust device 1 comprises an upper member 2, a lower member 3 spaced apart from the upper member 2 in the Y direction and positioned coaxially in the Y direction below the upper member 2, and at least one annular member 4 (in this embodiment, four, 4a to 4d) arranged coaxially in the Y direction between the upper member 2 and the lower member 3. The upper member 2, the lower member 3, and the annular member 4 have a circular outer shape when viewed from above in the Y direction. In this embodiment, the upper member 2, the lower member 3, and the annular member 4 are arranged coaxially with the central axis in the X direction, which represents the lateral direction in the figure of the exhaust device 1, in the order of upper member 2, annular member 4, and lower member 3, from the top to the bottom in the Y direction.

[0017] The following describes preferred configurations for each of the upper member 2, the annular member 4, and the lower member 3.

[0018] <Upper Member> The upper member 2 can have, for example, an internal recess and a bowl-shaped form with the central part in the X direction convex downwards. The lower surface of the upper member 2 faces the annular member 4a and has a bottom surface 21 through which the natural wind F1 passes. The bottom surface 21 of the upper member 2 has a spherical shape that convex downwards. This makes it possible to narrow the gap in the central part of the gap 5a in the X direction, and the crosswind F1 increases in velocity in the central part in the X direction as it passes through the gap 5a.

[0019] In another embodiment, as shown in Figure 3, the upper member 2 can have a substantially disc shape with its central portion in the X direction convex in the vertical direction. In this case as well, the bottom surface 21, which has a spherical shape that convex downwards, can narrow the gap in the central portion of the gap 5a in the X direction, and the crosswind F1 will have a faster flow velocity in the central portion in the X direction as it passes through the gap 5a.

[0020] <Annular Members> Each annular member 4 is an annular shape with openings 6a to 6d in the center in the X direction. Each annular member 4 has an outer shape that widens from the top to the bottom in the Y direction. In this embodiment, the maximum diameter of the upper annular member (e.g., 4a) is larger than the maximum diameter of the lower annular member (e.g., 4b). That is, the relationship of the maximum diameters of each annular member 4 is annular member 4a > annular member 4b > annular member 4c > annular member 4d. In another embodiment, the maximum diameters of each annular member 4 may all be the same. In yet another embodiment, the relationship of the maximum diameters of each annular member 4 may be annular member 4a < annular member 4b < annular member 4c < annular member 4d. In yet another embodiment, the relationship of the maximum diameters of each annular member 4 may be a repeating sequence of large and small. As will be described later, by appropriately adjusting this relationship, the effect of promoting the updraft F2 can be improved.

[0021] The longitudinal cross-sectional shape of the annular member 4 tapers in diameter from the center downwards. Due to this shape, the gaps between adjacent annular members 4, and between the annular member 4d and the lower member 3, narrow from the outside in the X direction towards the center (d3 < d4). Therefore, when the crosswind F1 passes through the gaps 5b to 5e, the flow velocity increases from the center in the X direction towards the inside.

[0022] As shown in Figure 4, the annular member 4a has an opening 6a in the center in the X direction for the passage of natural air F1 and exhaust gas. The opening 6a is preferably circular in shape when viewed from above. The annular member 4a and the upper member 2 are connected by a plurality of connecting members 7a. A gap 5a is formed between the upper member 2 and the annular member 4a, and the gap 5a has open surfaces a1 in multiple directions, for example, four directions. Each connecting member 7a is formed of a rod-shaped or plate-shaped member that does not obstruct the gap 5a as much as possible. Therefore, natural air F1 in each direction can pass through the gap 5a.

[0023] As shown in Figure 5, the annular member 4b has an opening 6b in the center in the X direction for the passage of natural air F1 and exhaust gas. The opening 6b is preferably circular in shape in plan view. The annular member 4b and the annular member 4a are connected by a plurality of connecting members 7b. A gap 5b is formed between the annular member 4b and the annular member 4a, and the gap 5b has open surfaces b1 in multiple directions, for example, four directions. Each connecting member 7b is formed of a rod-shaped or plate-shaped member that does not obstruct the gap 5b as much as possible. Therefore, natural air F1 from each direction can enter the gap 5b.

[0024] As shown in Figure 6, the annular member 4c has an opening 6c in the center in the X direction for the passage of natural air F1 and exhaust gas. The opening 6c is preferably circular in shape in plan view. The annular member 4c and the annular member 4b are connected by a plurality of connecting members 7c. A gap 5c is formed between the annular member 4c and the annular member 4b, and the gap 5c has open surfaces c1 in multiple directions, for example, four directions. Each connecting member 7c is formed of a rod-shaped or plate-shaped member that does not obstruct the gap 5c as much as possible. Therefore, natural air F1 from each direction can enter the gap 5c.

[0025] As shown in Figure 7, the annular member 4d has an opening 6d in the center in the X direction for the passage of natural air F1 and exhaust gas. The opening 6d is preferably circular in shape in plan view. The annular member 4d and the annular member 4c are connected by a plurality of connecting members 7d. A gap 5d is formed between the annular member 4d and the annular member 4c, and the gap 5d has open surfaces d1 in multiple directions, for example, four directions. Each connecting member 7d is formed of a rod-shaped or plate-shaped member that does not obstruct the gap 5d as much as possible. Therefore, natural air F1 from each direction can enter the gap 5d.

[0026] <Lower Member> As shown in Figure 8, the lower member 3 has a lower member passage 31 in the center in the X direction for the exhausted gas to pass through. The lower member passage 31 is preferably circular in shape in plan view. The lower member 3 has an intake port 32 for taking in the exhausted gas, and the intake port 32 is in communication with the lower member passage 31 through which the gas flows. The lower member 3 has an outer shape that widens from the top to the bottom in the Y direction.

[0027] The lower member 3 and the annular member 4d are connected by a plurality of connecting members 7e. A gap 5e is formed between the lower member 3 and the annular member 4d, and the gap 5e has open surfaces e1 in multiple directions, for example, four directions. Each connecting member 7e is formed of a rod-shaped or plate-shaped member that obstructs the gap 5e as little as possible. Therefore, natural wind F1 from each direction can enter the gap 5e.

[0028] The connecting members 7a to 7e are auxiliary components intended solely for connecting the individual components and do not affect the performance of the exhaust system 1. The shape, number, and mounting position of the connecting members 7a to 7e can be changed as appropriate.

[0029] <Exhaust Mechanism> Referring to Figure 2, the exhaust mechanism when a natural crosswind F1 acts on the exhaust device 1 will be explained.

[0030] Assume that a crosswind, indicated by arrow F1, passing in the X direction acts on the exhaust device 1. The gap 5a narrows towards the center in the X direction (d1 < d2). Therefore, as mentioned above, when the crosswind F1 passes through the gap 5a, its velocity increases in the center in the X direction. According to Bernoulli's theorem, the pressure in the center in the X direction decreases compared to the outside. That is, a negative pressure region M is generated in the center of the gap 5a in the X direction. Due to the generation of this negative pressure region M, an upward airflow F2 is generated in the Y direction at the center of the exhaust device 1 in the X direction.

[0031] As mentioned above, the gap 5b narrows from the outside in the X direction towards the center (d3 < d4). Therefore, a negative pressure region is generated within gap 5b, which has the effect of promoting the updraft F2. The same principle applies to gaps 5c to 5e, which also promotes the updraft F2.

[0032] The annular members 4a and 4b widen in diameter from the top to the bottom in the Y direction. Therefore, the crosswind F1 enters the gap 5b upward toward the center in the X direction, as indicated by arrow F3, thus promoting the updraft F2. The same principle applies to gaps 5c to 5e, which also promotes the updraft F2. As mentioned above, the effect of promoting the updraft F2 can be improved by appropriately adjusting the relative sizes of the maximum diameters of each annular member 4.

[0033] As described above, by generating a negative pressure region M in the gap 5a and promoting the upward airflow F2 caused by the generation of the negative pressure region M, gases such as air taken in from the intake port 32 can be exhausted with an increased airflow rate through the path of lower member flow path 31 → opening 6d → opening 6c → opening 6b → opening 6a → gap 5a.

[0034] <Simulation and experimental results> In the initial model based on the structure of the air collector described in Patent Document 1, the simulation results showed that the exhaust volume (airflow) was 570 m³. ３ It was / h. In contrast, in the structure of this embodiment, 910m ３The value was / h, and the exhaust performance improved by approximately 1.6 times. Figure 9 shows the flow velocity vector diagram of the simulation results at this time. From the figure, it can be seen that the air and other gases taken in from the intake port 32 are exhausted through the path of lower member flow path 31 → opening 6d → opening 6c → opening 6b → opening 6a → gap 5a.

[0035] Furthermore, a prototype exhaust device 1 was fabricated using a 3D printer, and experiments were conducted using a fixed passive DAC system (air collector). The results showed that the air collection performance matched the simulation (outside wind speed of 5 m / s and internal DAC wind speed of 0.22 m / s). In addition, it was confirmed that the airflow inside exhaust device 1 increased as the outside wind speed increased, indicating that the design is independent of wind speed. Figure 10 shows the experimental setup.

[0036] <Summary> As described in detail above, the exhaust device 1 according to this embodiment includes an intake port 32 for taking in gas and a gap 5a through which natural wind F1 passes. The gap 5a has open surfaces a1 in multiple directions so that natural wind F1 from each direction can pass through. The passage of natural wind F1 generates a negative pressure region M in the gap 5a, and the gas is exhausted using the natural wind F1.

[0037] With this configuration, it becomes possible to exhaust gases such as air using natural wind F1 without using electricity or other power sources.

[0038] Furthermore, the exhaust device 1 according to this embodiment comprises an upper member 2, a lower member 3 spaced apart from the upper member 2 in the vertical direction (Y direction) and arranged coaxially C in the vertical direction (Y direction) below the upper member 2, and at least one annular member 4 arranged coaxially C in the vertical direction (Y direction) between the upper member 2 and the lower member 3, wherein the upper member 2 has a gap 5a between it and the annular member 4a on the side of the upper member 2 of the at least one annular member 4, the lower member 3 has an intake port 32 and a lower member flow path 31 through which gas flows in communication with the intake port 32, and the annular member 4 has openings 6a to 6d in the central part in the lateral direction (X direction) for gas and natural wind F1 to pass through, and has an outer shape that widens in diameter from the side of the upper member 2 to the side of the lower member 3.

[0039] According to such a configuration, when the wind speed of the natural wind F1 increases, the flow rate inside the exhaust device 1 also increases, and it is possible to achieve a design that is independent of the wind speed.

[0040] Further, in the exhaust device 1 according to the present embodiment, when a plurality of annular members 4 are provided, the annular member gaps 5b to 5d between adjacent annular members 4 have annular member open surfaces b1 to d1 in a plurality of directions so that the natural wind F1 in each direction can enter.

[0041] According to such a configuration, it is possible to efficiently utilize the natural wind F1 in each direction and enhance the promoting effect on the upward airflow F2.

[0042] Further, in the exhaust device 1 according to the present embodiment, when a plurality of annular members 4 are provided, the maximum diameter of the upper annular member (for example, 4a) is larger than the maximum diameter of the lower annular member (for example, 4b).

[0043] According to such a configuration, the promoting effect on the upward airflow F2 can be enhanced.

[0044] Further, in the exhaust device 1 according to the present embodiment, the bottom surface 21 of the upper member 2 has a spherical shape that protrudes downward.

[0045] According to such a configuration, the flow velocity of the natural wind F1 passing through the gap 5a can be made faster at the central portion in the X direction, so that the generation of the negative pressure region M can be promoted.

[0046] <Modification Example> Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the gist of the invention. For example, the shapes of the upper member 2, the lower member 3, and the annular member 4 are not limited to the illustrated shapes and can be appropriately modified.

[0047] Furthermore, in the above embodiment, the case where four annular members 4a to 4d are provided has been described, but the number of annular members 4 can be one to three, five or more. Also, a configuration without the annular member 4 can be adopted. When the annular member 4 is not provided, a negative pressure region M is generated in the gap between the upper member 2 and the lower member 3.

[0048] 1 Exhaust device 2 Upper member 21 Bottom surface of upper member 3 Lower member 31 Flow path of lower member 32 Intake port 4, 4a, 4b, 4c, 4d Annular member 5a Gap 5b, 5c, 5d Gap (Gap between annular members) 6a, 6b, 6c, 6d Opening a1 Open surface b1, c1, d1 Open surface (Open surface between annular members) F1 Crosswind (Natural wind) M Negative pressure region

Claims

1. An exhaust device comprising an air intake for taking in gas and a gap through which natural air passes, wherein the gap has open surfaces in multiple directions so that the natural air can pass through in each direction, and a negative pressure region is generated in the gap by the passage of the natural air, and the gas is exhausted using the natural air.

2. An exhaust device according to claim 1, comprising: an upper member; a lower member spaced vertically apart from the upper member and arranged coaxially in the vertical direction below the upper member; and at least one annular member arranged coaxially in the vertical direction between the upper member and the lower member, wherein the upper member has the gap between the at least one annular member and the annular member on the side of the upper member; the lower member has an air intake port and a lower member flow path communicating with the air intake port through which the gas flows; the annular member has an opening in its lateral central portion for the passage of the gas and the natural wind, and has an outer shape that widens in diameter from the side of the upper member to the side of the lower member.

3. The exhaust device according to claim 2, wherein, when a plurality of the annular members are provided, the gaps between adjacent annular members have open surfaces in multiple directions so that natural wind from each direction can enter.

4. The exhaust device according to claim 2, wherein, when a plurality of the annular members are provided, the maximum diameter of the upper annular member is greater than the maximum diameter of the lower annular member.

5. The exhaust device according to claim 2, wherein the bottom surface of the upper member has a spherical shape that is convex downward.

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