Air flow generator

Abstract

There is a need for a device that circulates internal air without requiring electrical power and without mechanically moving parts. [Solution] The problem is solved by an air flow generating device comprising: a main duct arranged on the moving body, having a first opening communicating with an air intake port of the moving body and a second opening communicating with an air exhaust port of the moving body so that a primary flow of a first atmosphere outside the moving body is generated from the first opening to the second opening; an induction hole drilled in the wall surface of the main duct between the first opening and the second opening; an air conduit having a flow path outlet communicating with the induction hole; and a flow path inlet arranged in the second atmosphere inside the moving body.

Description

[Technical Field]

[0001] The present invention relates to an airflow generating device, a filter system, a power generation system and a carbon dioxide removal system. [Background technology]

[0002] In passenger transport vehicles such as passenger aircraft and passenger cars, it is necessary to generate an air flow inside the vehicle for various reasons, particularly for the purpose of increasing the cleanliness of the interior of the vehicle. To generate an air flow inside the vehicle, it is necessary to create a pressure difference inside the vehicle. Specifically, a high-pressure section and / or a degassing low-pressure section are generated, and an air flow is generated from the high-pressure section to the low-pressure section. For example, the high-pressure section is generated by a compressor, and the low-pressure section is generated by a degassing pump such as a vacuum pump. Summary of the Invention [Problem to be solved by the invention]

[0003] However, devices such as compressors and degassing pumps that generate high and low pressures generally require a large amount of power. This poses a problem for vehicles with power consumption restrictions, such as passenger aircraft and passenger cars. Furthermore, devices such as compressors and degassing pumps have mechanical moving parts that rotate or reciprocate, which can lead to problems such as the devices being large in size or prone to breakdowns.

[0004] When a vehicle travels at high speed, a relatively large airflow is generated outside the vehicle while it is moving. However, although the airflow generated outside the vehicle is advantageous for passenger aircraft and passenger cars because it does not require power, it cannot be directly controlled and used to generate an airflow inside the vehicle.

[0005] If a pressure difference could be generated using the airflow outside a vehicle moving at high speed, it would be desirable as a device that does not require large amounts of power, has no mechanical moving parts, is small, and is less prone to malfunction. It is particularly desirable to be able to generate an airflow inside the vehicle and thereby generate a low-pressure source. Here, a "low-pressure source" is defined as an environment controlled to have a pressure lower than the pressure of the surrounding atmosphere. Specifically, it is defined as a state in which the pressure at the airflow intake point for generating an airflow inside the vehicle is lower than the pressure around the chamber. The airflow generating device of the present invention functions as a low-pressure source generating device, and is significant as a device that produces the effect of generating a low-pressure source using this device. [Means for solving the problem]

[0006] The problem is solved by an air flow generating device comprising: a main duct arranged in the moving body, the main duct having a first opening communicating with an air intake port of the moving body and a second opening communicating with an air exhaust port of the moving body so that a primary flow of a first atmosphere outside the moving body is generated from the first opening to the second opening; and an air conduit having an induction hole drilled in a wall surface of the main duct between the first opening and the second opening, a flow path outlet communicating with the induction hole, and a flow path inlet arranged in a second atmosphere inside the moving body.

[0007] The problem is solved by a filter system comprising: an air flow generating device comprising: a main duct having a first opening communicating with an air intake port of a moving body and a second opening communicating with an air exhaust port of the moving body and arranged on the moving body so that a primary flow of a first atmosphere outside the moving body is generated from the first opening to the second opening; an air conduit having an induction hole drilled in a wall surface of the main duct between the first opening and the second opening, a flow path outlet communicating with the induction hole, and a flow path inlet arranged in a second atmosphere inside the moving body; and a filter arranged in the air conduit or in a low-pressure chamber arranged so that the interior of the chamber is in communication with the flow path inlet and has a second atmosphere acquisition port.

[0008] The problem is solved by a power generation system including an air flow generating device comprising: a main duct having a first opening communicating with an air intake port of a moving body and a second opening communicating with an air exhaust port of the moving body and arranged on the moving body so that a primary flow of a first atmosphere outside the moving body is generated from the first opening to the second opening; an air duct having an induction hole drilled in a wall surface of the main duct between the first opening and the second opening, a flow path outlet communicating with the induction hole, and a flow path inlet arranged in a second atmosphere inside the moving body; and a generator having a rotor and a stator connected to the rotation shaft and rotating blades that rotate around a rotation axis due to the flow of the second atmosphere into the air duct.

[0009] an air conduit having a first opening communicating with an air intake port of a moving body and a second opening communicating with an air discharge port of the moving body, the air conduit being arranged on the moving body so as to generate a primary flow of a first atmosphere outside the moving body from the first opening to the second opening; an induction hole formed in a wall surface of the main conduit between the first opening and the second opening, a flow path outlet communicating with the induction hole, and a flow path inlet arranged in a second atmosphere inside the moving body, the air flow generating device generating a secondary flow of the second atmosphere in the air conduit by the primary flow; a rotor that rotates around a rotation axis by the secondary flow of the second atmosphere; from the discharge port; a separation chamber which is provided with a separation material inside which carbon dioxide is selectively permeable and which is divided into a front chamber and a rear chamber by the separation material, the front chamber being in communication with a second atmosphere, and the rear chamber being connected to the suction port of the pump and arranged so as to introduce the gas of the second atmosphere which has permeated the separation material from the front chamber into the suction port of the pump; a liquid container having a liquid therein which dissolves carbon dioxide; an introduction pipe having one end which communicates with the discharge port of the pump and the other end which is located in the liquid in the liquid container and which causes the gas of the second atmosphere to pass through the liquid; and a carbon dioxide removal system which returns the gas which has passed through the liquid from the liquid in the liquid container to the inside of the moving body.

[0010] a first main conduit disposed in the movable body, the first main conduit having a first opening communicating with the outside of the movable body and a second opening communicating with the outside of the movable body so as to generate a primary flow of a first atmosphere outside the movable body from the first opening to the second opening; a first induction hole formed in a wall surface of the first main conduit between the first opening and the second opening; and a first air conduit having a flow path outlet communicating with the first induction hole and a flow path inlet disposed in a second atmosphere inside the movable body, wherein a secondary flow of the second atmosphere is generated in the first air conduit by the primary flow a second main duct disposed on the movable body, the second main duct having a first opening communicating with the outside of the movable body and a second opening communicating with the outside of the movable body so as to generate a primary flow of a first atmosphere outside the movable body from the first opening to the second opening; a second induction hole formed in a wall surface of the second main duct between the first opening and the second opening; and a second air duct having a flow path outlet communicating with the second induction hole and a flow path inlet disposed in a second atmosphere inside the movable body, wherein the primary flow causes air to flow into the second air duct. a second air flow generating device that generates a secondary flow of the second atmosphere; a first rotor that rotates around a rotation axis due to the secondary flow of the second atmosphere in the first air conduit; a second rotor that rotates around a rotation axis due to the secondary flow of the second atmosphere in the second air conduit; a pump having an inlet and an outlet, the pump being driven by the rotational force of the first rotor to discharge the second atmosphere sucked in from the inlet of the pump from the outlet of the pump; and a compressor having an inlet and an outlet, the rotation of the second rotor a compressor that drives the compressor to discharge the second atmosphere, which is sucked in through the intake port of the compressor and compressed, from the exhaust port of the compressor by a rotational force transmitted thereto; a separation chamber that communicates with the intake port of the pump and has a separation tube therein that selectively permeates carbon dioxide, the separation tube having one end communicating with the exhaust port of the compressor and the other end communicating with the second atmosphere, the separation chamber collecting the gas that has permeated through the separation tube and introducing it into the intake port; a liquid container that contains a liquid that dissolves carbon dioxide, and one end communicating with the discharge port of the pump;The problem is solved by an introduction pipe, the other end of which is positioned in the liquid in the liquid container and which passes the gas permeated from the separation tube through the liquid, and a carbon dioxide removal system which returns the gas that has passed through the liquid from the liquid in the liquid container to the inside of the moving body.

[0011] a power generation system including an air flow generating device comprising: a main duct arranged on the moving body, the main duct having a first opening communicating with an air intake port of the moving body and a second opening communicating with an air exhaust port of the moving body so that a primary flow of a first atmosphere outside the moving body is generated from the first opening to the second opening; an air conduit having an induction hole drilled in a wall surface of the main duct between the first opening and the second opening, a flow path outlet communicating with the induction hole, and a flow path inlet arranged in a second atmosphere inside the moving body; and a generator having a rotor and a stator connected to the rotation shaft, the rotor and the stator rotating around a rotation shaft due to the flow of the second atmosphere into the air conduit; and an air intake port and an exhaust port, the second atmosphere sucked in from the intake port and exhausted from the exhaust port. The problems are solved by a separation chamber which is provided with a separation material therein that selectively permeates carbon dioxide and is divided into a front chamber and a rear chamber by the separation material, the front chamber being in communication with a second atmosphere, and the rear chamber being connected to the suction port of the pump so as to introduce the gas of the second atmosphere that has permeated the separation material from the front chamber into the suction port of the pump; a liquid container having therein a liquid that dissolves carbon dioxide; an introduction pipe having one end that communicates with the discharge port of the pump and the other end that is located in the liquid in the liquid container and allows the gas of the second atmosphere to pass through the liquid; and a carbon dioxide removal system which returns the gas that has passed through the liquid from the liquid in the liquid container to the inside of the moving body.

[0012] an air flow generating device including: a main duct having a first opening communicating with an air intake port of a moving body and a second opening communicating with an air exhaust port of the moving body, the main duct being disposed on the moving body so as to generate a primary flow of a first atmosphere outside the moving body from the first opening to the second opening; an air conduit having an induction hole formed in a wall surface of the main duct between the first opening and the second opening, a flow path outlet communicating with the induction hole, and a flow path inlet disposed in a second atmosphere inside the moving body; a power generation system including: a rotating blade that rotates around a rotation axis due to the flow of the second atmosphere into the air conduit, and a generator having a rotor and a stator connected to the rotation axis; a pump having an inlet and an outlet, the pump being driven by electric power generated by the generator so as to discharge the second atmosphere drawn in from the inlet of the pump through the outlet of the pump; and an air intake port and an exhaust port. the compressor being driven by electric power generated by the generator so as to discharge the second atmosphere sucked in through the intake port of the compressor and compressed therein from the exhaust port of the compressor; a separation chamber communicating with the intake port of the pump and having therein a separation tube selectively permeating carbon dioxide, the separation chamber having one end communicating with the exhaust port of the compressor and the other end communicating with the second atmosphere, the separation chamber collecting the gas permeated from the separation tube and introducing it into the intake port; a liquid container having therein a liquid that dissolves carbon dioxide; an introduction pipe having one end communicating with the discharge port of the pump and the other end positioned in the liquid in the liquid container to pass the gas permeated from the separation tube through the liquid; and a carbon dioxide removal system that returns the gas that has passed through the liquid from the liquid in the liquid container to the inside of the moving body. [Effects of the Invention]

[0013] An air flow can be generated inside a vehicle using a device that does not require electrical power and has no mechanical moving parts. [Brief explanation of the drawings]

[0014] [Figure 1A] 1 is a perspective view of an airflow generating device according to one embodiment of the present invention; [Figure 1B] 1 is a cross-sectional view showing a state in which the airflow generating device of the first embodiment of the present invention is applied to the interior of a vehicle. [Figure 1C] FIG. 10 is a perspective view of another form of the airflow generating device according to the first embodiment of the present invention. [Figure 1D] 1 is a system diagram of an airflow generating device according to a first embodiment of the present invention. [Figure 1E] 1 is a diagram showing an example of use of the airflow generating device according to the first embodiment of the present invention. [Figure 2A] 1 is a perspective view showing an example of an air intake and an air outlet when the airflow generating device according to an embodiment of the present invention is applied to an aircraft. FIG. [Figure 2B] 1 is a perspective view showing an example of an air intake and an air exhaust when the air flow generating device according to the embodiment of the present invention is applied to a railway vehicle. FIG. [Figure 3A] FIG. 10 is a perspective view of an airflow generation device and a filter system according to a second embodiment of the present invention. [Figure 3B] FIG. 10 is a system diagram of an airflow generation device and a filter system according to a second embodiment of the present invention. [Figure 4A] FIG. 10 is a perspective view of an airflow generating device and a power generation system according to a third embodiment of the present invention. [Figure 4B] FIG. 10 is a system diagram of an airflow generating device and a power generation system according to a third embodiment of the present invention. [Figure 5A] FIG. 10 is a perspective view of an airflow generating device and a carbon dioxide removal system according to a fourth embodiment of the present invention. [Figure 5B] FIG. 10 is a system diagram of an air flow generation device and a carbon dioxide removal system according to a fourth embodiment of the present invention. [Figure 6A] FIG. 10 is a perspective view of an airflow generating device and a carbon dioxide removal system according to a fifth embodiment of the present invention. [Figure 6B] FIG. 10 is a system diagram of an air flow generation device and a carbon dioxide removal system according to a fifth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0015] [Embodiment 1] Next, with reference to Figs. 1A to 2B, an airflow generating device 1, which is a low-pressure source generating device according to a first embodiment of the present invention, will be described. Fig. 1A is a perspective view of a conceptual diagram of the basic form of the airflow generating device 1 according to the first embodiment of the present invention. Fig. 1B is a cross-sectional view of the moving body and main duct of the airflow generating device according to the first embodiment of the present invention. Fig. 1C is a perspective view of a conceptual diagram of a modified form of the basic form of the airflow generating device 1 according to the first embodiment of the present invention. Fig. 1D is a system diagram of the airflow generating device according to the first embodiment of the present invention. Fig. 1E is a diagram showing an example of use of the airflow generating device according to the first embodiment of the present invention. Fig. 2A shows an aircraft to which the airflow generating device 1 according to the present invention is applied. Fig. 2B shows a railway vehicle to which the airflow generating device 1 according to the present invention is applied.

[0016] The airflow generating device 1 of the present invention is applied to a moving vehicle (hereinafter referred to as "mobile body"). A mobile body is a vehicle that moves particularly at high speed, such as an aircraft such as a passenger plane, a railway vehicle such as a bullet train or conventional line, or an automobile. The airflow generating device 1 is disposed inside the mobile body. That is, the vehicle to which the airflow generating device 1 is applied is disposed inside a structural wall surface 10 of the mobile body. An air intake 10a and an air exhaust 10b are disposed on the structural wall surface 10.

[0017] The air intake 10a is an opening that takes in air (first atmosphere) from outside the moving body into the air flow generating device 1, and the air outlet 10b is an opening that discharges the first atmosphere, which has been taken in from the air intake 10a and passed through the air flow generating device 1, to the outside of the moving body. For example, in the case of the aircraft 81 in Fig. 2, the air intake 10a is arranged at the front of the lower part of the side of the aircraft 81, and the air outlet 10b is arranged at the rear of the lower part of the side of the aircraft 81.

[0018] 3, for example, air intakes 10a are arranged at the front lower part of the side of each car of the railway vehicle 82, and air outlets 10b are arranged at the rear lower part of each car. In either case, the front of the moving body is the upstream side where air intakes 10a are arranged, and the rear of the moving body is the downstream side where air outlets 10b are arranged. Here, aircraft 81 and railway vehicle 82 are shown as examples, but the air flow generating device 1 can be applied to all moving bodies and is not limited to aircraft 81 and railway vehicle 82.

[0019] The airflow generating device 1 of the present invention comprises a main duct 11, an induction hole 11c, and an air conduit 13. The main duct 11 has a first opening 11a and a second opening 11b at both ends. The induction hole 11c is arranged in the wall surface of the main duct 11.

[0020] The first opening 11a communicates with the air intake 10a, and the second opening 11b communicates with the air discharge port 10b. The air intake 10a and the air discharge port 10b are exposed to a first atmosphere. This causes a primary flow P of the first atmosphere to be generated in the main duct 11, from when the first atmosphere is taken in through the air intake 10a, introduced through the first opening 11a, and discharged through the second opening 11b.

[0021] The main duct 11 is a duct extending along the traveling direction of the moving body. The air intake 10a is arranged to open forward in the traveling direction of the moving body, so the first opening 11a is also arranged forward in the traveling direction of the moving body so as not to cause resistance to the flow of the first atmosphere from the air intake 10a. Similarly, the air exhaust 10b is arranged to open backward in the traveling direction of the moving body, so the second opening 11b is also arranged backward in the traveling direction of the moving body so as not to stagnate the flow of the first atmosphere from the air exhaust 10b. The primary flow P of the first atmosphere is a flow of air relative to the moving body.

[0022] For example, as shown in FIG. 1B , the main conduit 11 may be a flow path defined between a portion of the outside or inside of the structural wall surface 10 of the moving body and a plate member disposed opposite that portion. Alternatively, the main conduit 11 may be a hollow tubular conduit extending along the moving body's direction of travel. The main conduit 11 may be formed in various forms as long as it extends along the moving body's direction of travel. For example, as shown in FIG. 1B , the main conduit 11 may be formed inside the moving body as a separate conduit from the structural wall surface 10. Furthermore, although not shown, a plate facing the structural wall surface 10 may be disposed inside the moving body, and the structural wall surface 10 may be used as part of the main conduit 11 so as to form the main conduit 11 between the plate and the structural wall surface 10.

[0023] An induction hole 11c is drilled in the wall surface of the main conduit 11. The induction hole 11c can be, for example, a slit-shaped elongated hole extending perpendicular to the direction in which the main conduit 11 extends. The size of the cross section of the main conduit 11 can be constant from the first opening 11a to the second opening 11b, but as shown in Figures 1A and 1B, the cross section of the main conduit 11 may be large at the first opening 11a and the second opening 11b and may narrow near the induction hole 11c.

[0024] If the cross-sectional size of the main conduit 11 is constant from the first opening 11a to the second opening 11b, the speed of the primary flow P inside the main conduit 11 will be approximately constant, whereas if the cross-section of the main conduit 11 narrows near the induction hole 11c, the speed of the primary flow P will accelerate near the induction hole 11c. Furthermore, the shape of the wall surface of the main conduit 11 may be made variable, and a control device may be provided to control the wall surface of the main conduit 11, and the ratio of the cross-sectional area of ​​the induction hole 11c to the area of ​​the first opening 11a may be made variable, thereby controlling the static pressure near the induction hole 11c.

[0025] The air conduit 13 is disposed inside the movable body, which is under a second atmosphere different from the first atmosphere. Here, "different" means that both the first and second atmospheres are air, but the first atmosphere is the air outside the movable body, while the second atmosphere is the atmosphere inside the movable body. For example, as described below, the second atmosphere is the air inside the movable body, and can be said to be air containing carbon dioxide and germs emitted by personnel inside the movable body. The air conduit 13 includes a flow path inlet 13a and a flow path outlet 13b. In one embodiment, as shown in FIG. 1A, the flow path inlet 13a can be exposed to the interior of the movable body. In this case, the flow path inlet 13a functions as a low-pressure source, and secondary flow Q of the second atmosphere inside the movable body is directly introduced into the air conduit 13 from the flow path inlet 13a. The air is introduced into the air conduit 13 from the flow path inlet 13a and flows out of the air conduit 13 through the flow path outlet 13b to the induction hole 11c.

[0026] In the basic form of the first embodiment, the flow path inlet 13a of the air conduit 13 is exposed. However, as a modified form of the basic form of the first embodiment, as shown in Fig. 1C, a low-pressure chamber 15 having an opening 15a serving as a second atmosphere intake port exposed to the second atmosphere inside the movable body can be arranged, and the flow path inlet 13a can be connected to the inside of the movable body via the interior of the low-pressure chamber 15. In this case, the low-pressure chamber 15 functions as a low-pressure source inside the movable body, and secondary flow Q of the second atmosphere inside the movable body is taken into the air conduit 13 from the opening 15a of the low-pressure chamber 15 through the low-pressure chamber 15. The secondary flow Q is taken into the air conduit 13 from the opening 15a through the low-pressure chamber 15 and flows out through the flow path outlet 13b of the air conduit 13 to the induction hole 11c. The following description will be given in the form in which a low-pressure chamber 15 is arranged (Figure 1C), but the same applies to an example in which a low-pressure chamber 15 is not arranged and the flow path inlet 13a is exposed to the inside of the moving body and functions as a low-pressure source.

[0027] Because the flow velocity of the second atmosphere in the air conduit 13 is lower than that of the primary flow P of the first atmosphere in the main conduit 11, the static pressure of the first atmosphere near the induction hole 11c of the main conduit 11 is lower than that of the second atmosphere in the air conduit 13. Therefore, at the flow path outlet 13b of the air conduit 13, the second atmosphere is drawn into the main conduit 11 from the induction hole 11c of the main conduit 11. As a result, the pressure of the second atmosphere near the flow path outlet 13b of the air conduit 13 is lower than that of the flow path inlet 13a, and to compensate for this, a secondary flow Q of the second atmosphere can be generated via the air conduit 13 from the flow path inlet 13a to the flow path outlet 13b. As a result, a secondary flow Q of the second atmosphere is generated from inside the low-pressure chamber 15 via the flow path inlet 13a, and the internal pressure of the low-pressure chamber 15 is reduced. Since low pressure chamber 15 has opening 15a, secondary flow Q of the second atmosphere around low pressure chamber 15 is generated, which has the effect of generating a flow toward low pressure chamber 15, which serves as a low pressure source in the environment in which low pressure chamber 15 is installed. For example, secondary flow Q is generated in the room of mobile body 80 even if there is no opening such as a window.

[0028] 1E is a cross-sectional view of a pressurized section inside an aircraft 81, which is a passenger plane. As shown in FIG. 1E, by arranging a low-pressure chamber 15, the air inside the aircraft 81, which is the second atmosphere, flows toward the low-pressure chamber 15. For example, by providing a plurality of low-pressure chambers 15 (1501, 1502, 1503, 1504, 1505, 1506) and fluidly connecting each of the low-pressure chambers 1501, 1502, 1503, 1504, 1505, 1506 to the flow path inlet 13a, a secondary flow Q can be induced toward each of the openings 15a (1501a, 1502a, 1503a, 1504a, 1505a, 1506a). Naturally, the low pressure chambers 15 (1501, 1502, 1503, 1504, 1505, 1506) may not be provided, and the flow path inlets 13a may be exposed.

[0029] For example, various purposes can be achieved by generating an air flow toward the low pressure chamber 15 to remove contaminants such as bacteria contained in the air inside the vehicle 80, or to remove increased carbon dioxide exhaled by passengers. The internal space of the low pressure chamber 15 can be used for various purposes.

[0030] Furthermore, as described above, when the cross-sectional size of the main conduit 11 in the vicinity of the induction hole 11c of the main conduit 11 is narrowed to be smaller than the first opening 11a and the second opening 11b, the Venturi effect further reduces the pressure of the first atmosphere in the vicinity of the induction hole 11c of the main conduit 11. This makes it possible to further increase the secondary flow Q of the second atmosphere via the air conduit 13 from the flow path inlet 13a to the flow path outlet 13b.

[0031] When the airflow generating device 1 is applied to a moving body, the air duct 13, the flow path inlet 13a, and the flow path outlet 13b are arranged inside the moving body. The second atmosphere is the atmosphere inside the moving body. If the flow path inlet 13a is connected to, for example, a passenger compartment inside the moving body, the secondary flow Q of the atmosphere inside the passenger compartment can be naturally merged with the primary flow P through the induction hole 11c and discharged to the outside of the moving body. Specifically, in the case of an aircraft 81, for example, the speed of the primary flow P is 900 km / h, and the speed of the secondary flow Q is 100 km / h.

[0032] Valves 14a, 14b, and 14c can be provided at the first opening 11a, the second opening 11b, and the induction hole 11c, respectively, as needed. This makes it possible to limit the timing of discharge to the outside, and by controlling the opening and closing amounts of the valves 14a, 14b, and 14c, it is possible to control the flow rate of the secondary flow Q of the second atmosphere from the flow path inlet 13a to the flow path outlet 13b via the air conduit 13. Furthermore, valves (not shown) can also be provided at the flow path inlet 13a and the flow path outlet 13b as needed.

[0033] Furthermore, by arranging opening / closing doors as valves at the openings, air inlet 10a and air outlet 10b, and controlling the opening area of ​​the opening / closing doors, the flow of the first atmosphere itself can be controlled, and the secondary flow Q of the second atmosphere can be controlled through control of the primary flow P of the first atmosphere. For example, a control device (not shown) can be arranged to control the opening and closing amounts of air inlet 10a, air outlet 10b, and valves 14a, 14b, and 14c, thereby controlling the flow rate of the first atmosphere and the flow rate of the second atmosphere inside main conduit 11. Similarly, when valves (not shown) are arranged at flow path inlet 13a and flow path outlet 13b, the opening and closing amounts of these valves can be controlled by the control device to directly control the flow rate and flow rate of the second atmosphere.

[0034] The airflow generating device 1 can directly generate an airflow inside a moving object without requiring any mechanical moving parts or electricity. The airflow generated by the airflow generating device 1 can generate a low-pressure source at the flow path inlet 13a, so the airflow generating device 1 also functions as a low-pressure source generating device. By utilizing the airflow generated by the airflow generating device 1 of the first embodiment and the low-pressure source generated thereby, the airflow generating device 1 can be applied to devices that achieve various purposes.

[0035] For example, in the basic configuration of the first embodiment, by arranging a filter member (not shown) in the flow path cross section of the air conduit 13, the airflow generating device 1 can function as a filter system. For example, a filter member (not shown) is arranged at the flow path inlet 13a or inside the air conduit 13. This allows all of the secondary flow Q of the second atmosphere introduced into the air conduit 13 to pass through the filter member (not shown), and by selecting an appropriate filter member depending on the object to be captured, the airflow generating device 1 can also function as a filter system. Furthermore, when the airflow generating device 1 is made to function as the filter system 2, a modification of the basic configuration of the first embodiment in which the low-pressure chamber 15 is arranged can be made in which a filter member is arranged inside the low-pressure chamber 15. This is described below as the second embodiment. The selection of the filter member will be described later in the second embodiment.

[0036] Furthermore, for example, in the basic configuration of the first embodiment, a power generation system can be configured by arranging a rotor near the flow path inlet 13a and connecting the rotor's rotation shaft to a generator. That is, the rotor (not shown) is rotated by the secondary flow Q of the second atmosphere introduced from the flow path inlet 13a toward the air conduit 13, and the rotation of the rotation shaft caused by the rotor (not shown) rotates a power generator in the generator within a magnetic field, thereby functioning as a power generation system (not shown). Furthermore, when the airflow generating device 1 is configured as the power generation system 3, a configuration in which a low-pressure chamber 15 is arranged, which is a modified configuration of the basic configuration of the first embodiment, may be configured so that a rotor is arranged inside the low-pressure chamber 15. This will be described later as a third embodiment.

[0037] [Embodiment 2] Next, a filter system 2 using the air flow generating device 1 will be described as a second embodiment of the present invention with reference to Figs. 3A and 3B. Fig. 3A is a perspective view of the filter system 2 to which the air flow generating device 1 of the first embodiment of the present invention is applied. Fig. 3B shows a system diagram of the filter system 2. The difference from the first embodiment is that a filter 15b is disposed in the low-pressure chamber 15. Only the differences from the first embodiment will be described here. As described above, in the first embodiment, the filter system 2 may be formed by disposing the filter 15b at the flow path inlet 13a of the air conduit 13 without disposing the low-pressure chamber 15.

[0038] The filter system 2 is a device intended for air purification, for example, by removing contaminants such as bacteria contained in the air inside a vehicle, or for removing carbon dioxide exhaled by passengers, and is intended to protect the environment by purifying the polluted air inside the vehicle and then releasing it into the outside air.

[0039] A filter 15b is disposed inside the low-pressure chamber 15. The filter 15b has a characteristic that it allows the second atmosphere to pass through but does not allow the components to be captured, which are impurities contained in the second atmosphere, to pass through. As a result, a secondary flow Q containing the components to be captured is introduced into the low-pressure chamber 15 from the opening 15a and passes through the inside of the filter 15b. The components to be captured are captured by the filter 15b, and the secondary flow Q from which the components to be captured have been removed flows from the low-pressure chamber 15 to the air conduit 13 via the flow path inlet 13a. As described above, the second atmosphere is the air inside the vehicle, i.e., the air inside the vehicle, such as the passenger cabin. The air of the second atmosphere is air containing carbon dioxide and germs exhaled by people inside the vehicle, such as passengers in the passenger cabin.

[0040] A porous material can be selected for the filter 15b depending on the target to be captured. For air purification, a wide variety of porous materials with many micropores, such as HEPA filters, activated carbon, and nonwoven fabrics, can be used. For carbon dioxide removal, the filter 15b can also be a carbon dioxide adsorbing porous material with many micropores formed from a carbon dioxide adsorbing material such as silica, calcium, or magnesium. This allows the filter system 2 to remove impurities from the air serving as the second atmosphere according to the characteristics of the filter 15b, thereby purifying the air inside the mobile body. The purified air serving as the second atmosphere flows from the air conduit 13 through the flow path inlet 13a and the induction hole 11c into the main conduit 11 and is exhausted from the second opening 11b of the main conduit 11.

[0041] [Embodiment 3] Next, referring to Fig. 4A and Fig. 4B, a power generation system 3 using the airflow generating device 1 will be described as a third embodiment of the present invention. Fig. 4A is a perspective view of the power generation system 3 to which the airflow generating device 1 of the first embodiment of the present invention is applied. Fig. 4B shows a system diagram of the power generation system 3. The power generation system 3 differs from the first embodiment in that a rotor 16 is provided in the low-pressure chamber 15, and a generator 21 is provided. Only the differences from the first embodiment will be described here. As described above, the low-pressure chamber 15 in the first embodiment may be omitted, and the rotor 16 may be disposed at the flow path inlet 13a of the air conduit 13, and the generator may be rotated by the rotation shaft 16a of the rotor 16 to generate power.

[0042] The rotor 16 has multiple blade rows, and a portion of the blade rows is always exposed to the secondary flow Q of the second atmosphere from the flow path inlet 13a to the flow path outlet 13b, allowing the rotor 16 to rotate around the rotation axis 16a due to the secondary flow Q of the second atmosphere. The rotor 16 may be a rotor having a blade row in which the direction of the secondary flow Q is the same as the direction of the rotation axis 16a, or may be a rotor having a blade row in which the direction of the secondary flow Q is perpendicular to the direction of the rotation axis 16a. The rotor 16 may have a blade row of various shapes as long as it can rotate around the rotation axis 16a due to the secondary flow Q. FIGS. 4A and 4B show an example of a rotor having a blade row in which the direction is perpendicular to the direction of the rotation axis 16a.

[0043] The generator 21 is not particularly limited as long as it generates electricity through rotation, and is typically a generator including a stator 21a and a rotor 21b. One of the stator 21a and the rotor 21b includes a magnet, and the other of the stator 21a and the rotor 21b includes a coil. The rotating shaft 16a is joined to the rotor 21b of the generator 21.

[0044] When the airflow generating device 1 generates a secondary flow Q in the second atmosphere, the secondary flow Q rotates the rotor 16, which in turn rotates the rotating shaft 16a. When the rotating shaft 16a rotates, the rotor 21b rotates, causing the coil to rotate within the magnetic field. This generates induction motor power in the coil, which is then output to the output line 21c by the generator 21. For example, when the primary flow P in the first atmosphere in the main duct 11 is 900 km / h, the secondary flow Q in the second atmosphere in the air duct 13 is 100 km / h. At this time, the rotation speed of the rotating shaft 16a becomes 1250 rpm, and the generator generates an output of 0.06 kW.

[0045] The electricity output by the generator 21 can operate various devices of the mobile body, and by generating electricity using the air flow generating device 1, the electricity can be applied to various devices of the mobile body without using the electricity required for operating or running the mobile body.

[0046] [Embodiment 4] Next, a carbon dioxide removal system 4 using the air flow generating device 1 will be described as a fourth embodiment of the present invention with reference to Figures 5A and 5B. Figures 5A and 5B respectively show a conceptual perspective view and a system diagram of the air flow generating device 1 and the carbon dioxide removal system 4 of the present invention as the fourth embodiment. The carbon dioxide removal system 4 includes the air flow generating device 1, a rotor 16, a pump 17, a separation chamber 18, and a liquid container 19.

[0047] In the basic form of embodiment 1, flow path inlet 13a of air duct 13 is exposed to the inside of the moving body, or in a form modified from the basic form of embodiment 1, flow path inlet 13a of air duct 13 is directly connected to low pressure chamber 15 and opening 15a of low pressure chamber 15 is exposed to the inside of the moving body. Embodiment 4 differs in that a rotor 16 rotating around rotation axis 16a is provided in the flow of secondary flow Q to air duct 13 in low pressure chamber 15. The airflow generating device 1 is the same as in embodiment 1.

[0048] The rotor 16 has multiple blade rows, and a portion of the blade rows is always exposed to the secondary flow Q of the second atmosphere from the flow path inlet 13a to the flow path outlet 13b, allowing the rotor 16 to rotate around the rotation axis 16a due to the secondary flow Q of the second atmosphere. The rotor 16 may be a rotor having a blade row in which the direction of the secondary flow Q is the same as the direction of the rotation axis 16a, or may be a rotor having a blade row in which the direction of the secondary flow Q is perpendicular to the direction of the rotation axis 16a. The rotor 16 may have a blade row of various shapes as long as it can rotate around the rotation axis 16a due to the secondary flow Q. FIGS. 5A and 5B show an example of a rotor having a blade row in which the direction is perpendicular to the direction of the rotation axis 16a.

[0049] Pump 17 has a discharge port 172 and a suction port 171 disposed in the second atmosphere. Pump 17 is a degassing pump typified by a vacuum pump. Rotating shaft 16a of rotor 16 is coupled to an impeller inside pump 17 so that rotation is transmitted to the impeller. Pump 17 is driven by the transmission of the rotational force of rotor 16 to discharge gas in the second atmosphere sucked in through suction port 171 from discharge port 172. Pump 17 can typically be a rotary pump that can directly use the rotation around rotating shaft 16a, but pump 17 can also be a positive displacement reciprocating pump that reciprocates a piston using a mechanism such as a crank.

[0050] The separation chamber 18 has a separation material 181 disposed therein and is divided by the separation material 181 into two chambers: a front chamber 18a and a rear chamber 18b. The front chamber 18a has an opening in part so that it is exposed to and communicates with the second atmosphere, and the rear chamber 18b communicates with the suction port 171 of the pump 17. The rear chamber 18b is connected to the suction port 171 of the pump 17 so that gas of the second atmosphere that has permeated through the separation material 181 from the front chamber 18a is introduced into the suction port 171 of the pump 17. The separation material 181 is a membrane that selectively allows carbon dioxide to pass through. The separation material 181 is, for example, a polymeric material membrane that is a nanoporous film having numerous nanopores that are impermeable to nitrogen and oxygen but selectively allow carbon dioxide molecules to pass through. The separation material 181 is, for example, a polymeric film having numerous nanopores that are larger than the average size of carbon dioxide molecules (0.33 nanometers) and smaller than the average size of nitrogen molecules in air (0.36 nanometers). Furthermore, by making the film thickness 250 nanometers or less, it is possible to selectively allow carbon dioxide to permeate.

[0051] Front chamber 18a is exposed to the second atmosphere inside the moving body, and the pressure inside the moving body, for example, 0.8 atmospheres in the cabin of an aircraft, is maintained. Meanwhile, the pressure in rear chamber 18b is reduced by pump 17. The pressure difference between front chamber 18a and rear chamber 18b causes carbon dioxide in the second atmosphere generated inside the moving body to pass through separation material 181. This allows carbon dioxide to selectively pass through separation material 181 and be collected in rear chamber 18b by so-called membrane separation. Meanwhile, other components of air, such as nitrogen, cannot pass through separation material 181 in front chamber 18a, and remain in front chamber 18a or return to the inside of the moving body.

[0052] The gas of the second atmosphere that has passed through the separation material 181 is introduced into the pump 17 from the suction port 171 via the rear chamber 18b. Most of the gas of the second atmosphere that has passed through the separation material 181 is carbon dioxide, but small amounts of nitrogen and oxygen, which are components of air, also permeate the separation material 181, so the gas of the second atmosphere that has passed through the separation material 181 also contains small amounts of nitrogen and oxygen. The pump 17 uses the rotational force transmitted from the rotor 16 to discharge the gas of the second atmosphere that contains carbon dioxide that has been sucked in from the suction port 171 from the discharge port 172.

[0053] The carbon dioxide removal system 4 includes a liquid container 19 having a liquid 191 therein that dissolves carbon dioxide. Examples of the liquid that dissolves carbon dioxide include water and an ionic liquid. The liquid may be any liquid that has high solubility in carbon dioxide. An end of an outlet 172 of the pump 17 is located in the liquid 191 inside the liquid container 19. Alternatively, an inlet pipe having one end communicating with the outlet 172 of the pump 17 and the other end located in the liquid in the liquid container 19 may be disposed in the carbon dioxide removal system 4, and the gas of the second atmosphere may be passed through the liquid from the inlet pipe. The inlet pipe may be formed as part of the outlet 172, or may be formed as a separate member connected to the outlet 172. The gas of the second atmosphere containing carbon dioxide introduced into the liquid container 19 from the outlet 172 passes through the liquid 191, and the carbon dioxide in the gas of the second atmosphere is dissolved in the liquid 191 by so-called solution separation.

[0054] The gas that has passed through the liquid 191 in the liquid container 19 is returned to the inside of the moving body. As a method for returning the gas that has passed through the liquid 191 to the inside of the moving body, for example, a collector 192 that collects the air that has passed through the liquid 191 from the top of the liquid container 19 is disposed in the liquid container 19 above the liquid container 19. The air collected by the collector 192 is returned to the inside of the moving body from a return pipe 193 using a return device (not shown), and returns to the second atmosphere as fresh gas from which carbon dioxide has been removed.

[0055] This allows the pump 17 to be driven by the airflow generating device 1 without supplying power to the pump 17.

[0056] As described above, in the basic form of the carbon dioxide removal system of embodiment 4, rotating shaft 16a of rotor 16 is coupled to the impeller of pump 17 so that rotational force is transmitted to the impeller. However, as a modified form of embodiment 4, rotating shaft 16a of rotor 16 is not coupled to the impeller of pump 17 so that rotational force is transmitted to the impeller, but rotating shaft 16a of rotor 16 is coupled to generator 21, and a carbon dioxide removal system (not shown) can be provided as in embodiment 3, in which power generation system 3 is provided and pump 17 is operated so that the impeller of pump 17 is driven by electric power generated by generator 21 of power generation system 3.

[0057] [Embodiment 5] Next, with reference to FIGS. 6A and 6B, a carbon dioxide removal system 4 using an air flow generating device 1 will be described as a fifth embodiment of the present invention. FIGS. 6A and 6B respectively show a conceptual perspective view and a system diagram of the air flow generating device 1 and the carbon dioxide removal system 4 of the present invention as the fifth embodiment. The carbon dioxide removal system 4 includes the air flow generating device 1, a rotor 16, a pump 17, a separation chamber 18, and a liquid container 19. In the third embodiment, a separation material 181 is used in the separation chamber 18, and the pressure in the rear chamber 18b is reduced so that carbon dioxide selectively passes through the separation material 181. However, in the fifth embodiment, a separation tube 183 is disposed in the separation chamber 18, and a pressurized second atmosphere is passed through the separation tube 183 to selectively separate carbon dioxide from the separation tube 183. Here, the fifth embodiment will be described with respect to the differences from the first to fourth embodiments, and the explanation of the same parts will be limited to supplementary explanation.

[0058] In addition to the components of the fourth embodiment, the fifth embodiment further includes a compressor 12. The compressor 12 includes an intake port 12a for introducing the second atmosphere into the compressor 12 and an exhaust port 12b for discharging the second atmosphere compressed by the compressor 12. The separation chamber 18 also includes a separation pipe 183, which communicates with the exhaust port 12b and has an exhaust port 183a for discharging the second atmosphere from the separation chamber 18.

[0059] In the fifth embodiment, the driving force for driving the compressor 12 is also utilized by the airflow generating device 1. Therefore, in the fifth embodiment, two airflow generating devices 1 are provided: a first airflow generating device 1a and a second airflow generating device 1b. The first airflow generating device 1a drives the pump 17, and the second airflow generating device 1b drives the compressor 12. The first airflow generating device 1a and the second airflow generating device 1b have the same structure and mechanism as the airflow generating device 1 described in the first embodiment.

[0060] The first air flow generating device 1a includes a first main duct 111, a first induction hole 111c, a first air conduit 131, and a first low-pressure chamber 151. The first main duct 111 has a first opening 111a at one end and a second opening 111b at the other end, and is disposed on the movable body so that a primary flow of a first atmosphere outside the movable body is generated from the first opening 111a to the second opening 111b. The first induction hole 111c is bored in the wall of the first main duct 111 between the first opening 111a and the second opening 111b. The first air conduit 131 has a flow path inlet 131a at one end and a flow path outlet 131b at the other end. The flow path outlet 131b is connected to the first induction hole 111c, and the flow path inlet 131a is disposed in a second atmosphere inside the movable body. A first rotary blade 161 is provided inside the first low pressure chamber 151 , and the first rotary blade 161 is rotatable around a rotation axis 161 a by the air flow of the second atmosphere in the first air conduit 131 .

[0061] On the other hand, the second air flow generating device 1b includes a second main duct 112, a second induction hole 112c, a second air conduit 132, and a second low-pressure chamber 152. The second main duct 112 has a first opening 112a at one end and a second opening 112b at the other end, and is disposed on the movable body so that a primary flow of a first atmosphere outside the movable body is generated from the first opening 112a to the second opening 112b. The second induction hole 112c is bored in the wall of the second main duct 112 between the first opening 112a and the second opening 112b. The second air conduit 132 has a flow path inlet 132a at one end and a flow path outlet 132b at the other end. The flow path outlet 132b is connected to the second induction hole 112c, and the flow path inlet 132a is disposed in the second atmosphere inside the movable body. The second low pressure chamber 152 is provided with a second rotor 162, which can rotate around a rotation axis 162a by the air flow of the second atmosphere in the second air conduit 132.

[0062] Valves 141a, 141b, and 141c may be provided at the first opening 111a of the first main conduit 111, the second opening 111b of the first main conduit 111, and the first induction hole 111c, respectively, as required. Valves 142a, 142b, and 142c may also be provided at the first opening 112a of the second main conduit 112, the second opening 112b of the second main conduit 112, and the second induction hole 112c, respectively, as required. Valves (not shown) may also be provided at the flow path inlet 131a of the first air conduit 131, the flow path outlet 131b of the first air conduit 131, the flow path inlet 132a of the second air conduit 132, and the flow path outlet 132b of the second air conduit 132, as required.

[0063] The first main duct 111 and the second main duct 112 can typically be configured to communicate in parallel with a common air intake 10a and air discharge 10b, as shown in Fig. 6B. Alternatively, a configuration (not shown) may be adopted in which the first opening 111a of the first main duct 111 and the first opening 112a of the second main duct 112 communicate with different air intakes, and the second opening 111b of the first main duct 111 and the second opening 112b of the second main duct 112 communicate with different air discharges. The first opening 111a of the first main conduit 111, the second opening 112b of the second main conduit 112, the second opening 111b of the first main conduit 111, and the first opening 112a of the second main conduit 112 are connected to the outside of the moving body through openings provided in the moving body, and various forms can be taken as long as a primary flow P of the first atmosphere from the first opening 111a of the first main conduit 111 to the second opening 111b of the first main conduit 111 and a primary flow P from the first opening 112a of the second main conduit 112 to the second opening 112b of the second main conduit 112 can be generated.

[0064] The pump 17 is the same as in the fourth embodiment, and includes an inlet port 171 and an outlet port 172. A rotating shaft 161a of the first rotor 161 is coupled to an impeller inside the pump 17 so that rotation is transmitted thereto. The rotational force of the first rotor 161 is transmitted to the pump 17, driving the pump 17 to suck in the second atmosphere from the inlet port 171 and discharge it from the outlet port 172 of the pump 17. The compressor 12, which is a characteristic configuration of the fifth embodiment, includes an inlet port 12a and an outlet port 12b. A rotating shaft 162a of the second rotor 162 is coupled to an impeller inside the compressor 12 so that rotation is transmitted thereto. The rotational force of the second rotor 162 is transmitted to the compressor 12, driving the compressor 12 to suck in the second atmosphere from the inlet port 12a of the compressor 12, compress it, and discharge it from the outlet port 12b.

[0065] The separation chamber 18 includes a separation tube 183 therein. The separation chamber 18 communicates with the suction port 171 of the pump 17, collects carbon dioxide permeated from the separation tube 183, and introduces it into the suction port 171. The separation tube 183 has one end communicating with the exhaust port of the compressor and the other end communicating with the second atmosphere, and is a tube that selectively permeates carbon dioxide. The separation tube 183 is, for example, a tube formed by tubularly forming a thin film of a polymer material. The separation tube 183 is, for example, a separation tube formed by forming a polymer material separation membrane, which is a nanoporous film having numerous nanopores, into microtubes with a hollow cross section having a minute radius, and arranging these in the form of a cluster bundle. The term "selectively permeating carbon dioxide" means that carbon dioxide mainly permeates, and nitrogen does not mainly permeate, but only slightly, if at all. Separation tube 183 has a main gas flow along the direction in which separation tube 183 extends, and carbon dioxide is allowed to permeate in the thickness direction of the polymeric material separation membrane that constitutes separation tube 183, which is along the radial direction of separation tube 183. Therefore, a longer separation tube 183 is more effective for allowing more carbon dioxide to permeate, and so, for example, separation tube 183 can be formed into a spiral shape and housed inside separation chamber 18, allowing separation tube 183 to be housed inside separation chamber 18 in a small volume.

[0066] When the carbon dioxide-containing air that flows into separation tube 183 from exhaust port 12b is pressurized and flows, only nitrogen, which cannot pass through the polymer separation film layer, passes through separation tube 183 and is returned to the second atmosphere from exhaust port 183a. On the other hand, oxygen and carbon dioxide other than nitrogen pass through the polymer separation membrane and flow into separation chamber 18 so as to seep out in the radial direction of separation tube 183.

[0067] As in the fourth embodiment, carbon dioxide removal system 4 includes liquid container 19 having liquid 191 therein that dissolves carbon dioxide, and an inlet pipe having one end communicating with outlet 172 of pump 17 and the other end located in liquid 191 in liquid container 19 for passing gas of the second atmosphere through the liquid, and the gas that has passed through liquid 191 in liquid container 19 is returned to the inside of the moving body. That is, carbon dioxide introduced so as to seep into separation chamber 18, together with small amounts of nitrogen and oxygen, are introduced from inlet 171 to pump 17 and discharged from outlet 172, as in the fourth embodiment. Then, the carbon dioxide is introduced into liquid container 19 and passes through liquid 191, and carbon dioxide dissolves in liquid 191 by so-called solution separation, as in the fourth embodiment.

[0068] Similar to the fourth embodiment, carbon dioxide removal system 4 can also be configured to further include a collector that collects gas that has passed through liquid 191 from the top of liquid container 19, and a reflux device that circulates the gas collected by the collector back into the interior of the moving body. Then, the gas that has passed through liquid 191 from liquid 191 in liquid container 19 is circulated back into the interior of the moving body.

[0069] In this way, the carbon dioxide removal system 4 can separate carbon dioxide by utilizing an air flow generating device without requiring any mechanical moving parts or electricity.

[0070] As described above, in the basic configuration of the carbon dioxide removal system of embodiment 5, the rotating shaft 161a of the first rotor 161 is coupled to the impeller of the pump 17 so as to transmit rotational force, and the rotating shaft 162a of the second rotor 162 is coupled to the impeller of the compressor 12 so as to transmit rotational force. However, as a variation of embodiment 5, a carbon dioxide removal system (not shown) can be configured in which the first rotor 161 and the second rotor 162 are not provided, but the power generation system 3 of embodiment 3 is provided, and the pump 17 and the compressor 12 are operated so as to drive the impellers of the pump 17 and the compressor 12 with electric power generated by the generator 21 of the power generation system 3. [Explanation of symbols]

[0071] 1. Air flow generator 2. Filter System 3 Power generation system 4. Carbon dioxide removal system 10 Structural wall 11 Main pipeline 11a 1st opening 11b 2nd opening 11c Attraction hole 12 Compressor 13 Air duct 14 Valves 15 Low pressure chamber 16 rotor blades 17 Pump 18 Separation room 19 Liquid containers 21 Generator 81 Aircraft 82 Railway Vehicles 111 1st main pipeline 112 2nd main pipeline 131 First Air Pipe 132 Second air duct 151 First Low Pressure Chamber 152 Second Low Pressure Chamber 161 First Rotor 162 Second Rotor

Claims

1. An airflow generating device that is arranged inside a structural wall surface of a moving body, the airflow generating device comprising: a main pipe line disposed on the moving body, the main pipe line including a first opening communicating with an air intake opening that opens in a structural wall surface of the moving body toward the front in the moving direction of the moving body, and a second opening communicating with an air exhaust opening that opens in the structural wall surface of the moving body toward the rear in the moving direction of the moving body, the main pipe line being disposed on the moving body so that a primary flow of a first atmosphere outside the moving body is generated from the first opening to the second opening; an induction hole formed in a wall surface of the main pipe between the first opening and the second opening; an air conduit having a flow path outlet communicating with the induction hole and a flow path inlet disposed in a second atmosphere inside the moving body; an air flow generating device that generates a secondary flow of the second atmosphere in the air conduit by the primary flow;

2. 2. The airflow generating device according to claim 1, An air flow generating device in which at least one of the first opening, the second opening, the induction hole, the flow path inlet, the flow path outlet, the air intake of the moving body, and the air exhaust port has a valve.

3. 3. The airflow generating device according to claim 1 or 2, The air flow generating device, wherein the moving body is an aircraft, a railway vehicle, or an automobile.

4. 2. The airflow generating device according to claim 1, An airflow generating device comprising a filter disposed in the air conduit or in a low-pressure chamber disposed so as to communicate with the flow path inlet and having a second atmosphere intake port.

5. 5. The airflow generating device according to claim 4, An air flow generating device in which at least one of the first opening, the second opening, the induction hole, the flow path inlet, the flow path outlet, the air intake of the moving body, and the air exhaust port has a valve.

6. 5. The airflow generating device according to claim 4, The air flow generating device, wherein the moving body is an aircraft, a railway vehicle, or an automobile.

7. 6. The airflow generating device according to claim 5, The air flow generating device, wherein the moving body is an aircraft, a railway vehicle, or an automobile.

8. 8. The airflow generating device according to claim 4, wherein: The filter is an airflow generating device made of a porous material having many tiny holes.

9. 9. The airflow generating device according to claim 8, An airflow generating device in which the porous material is made of a material that adsorbs carbon dioxide.

10. The airflow generating device according to claim 1; a rotor that rotates about a rotation axis due to the flow of the second atmosphere into the air conduit; an electric generator having a rotor and a stator connected to the rotating shaft;

11. 11. The airflow generating device according to claim 10, The airflow generating device wherein the rotor is disposed in a low pressure chamber communicating with the flow path inlet.

12. 11. The airflow generating device according to claim 10, An air flow generating device in which at least one of the first opening, the second opening, the induction hole, the flow path inlet, the flow path outlet, the air intake of the moving body, and the air exhaust port has a valve.

13. 12. The airflow generating device according to claim 11, An air flow generating device in which at least one of the first opening, the second opening, the induction hole, the flow path inlet, the flow path outlet, the air intake of the moving body, and the air exhaust port has a valve.

14. 14. An airflow generating device according to any one of claims 10 to 13, The air flow generating device, wherein the moving body is an aircraft, a railway vehicle, or an automobile.

15. 2. The airflow generating device according to claim 1, a rotor that rotates around a rotation axis due to the flow of the second atmosphere; an airflow generating device comprising: a pump having an intake port and an exhaust port, the pump being driven to discharge the second atmosphere sucked in through the intake port from the exhaust port when the rotational force of the rotor is transmitted; and a separation chamber having a separation material therein that selectively allows carbon dioxide to pass therethrough, the separation material dividing the separation material into a front chamber and a rear chamber, the front chamber communicating with the second atmosphere, and the rear chamber connected to the intake port of the pump so as to introduce gas of the second atmosphere that has permeated the separation material from the front chamber into the intake port of the pump.

16. 16. The airflow generating device of claim 15, a liquid container having a liquid therein that dissolves carbon dioxide; an introduction pipe having one end communicating with the discharge port of the pump and the other end positioned in the liquid in the liquid container to allow the gas of the second atmosphere to pass through the liquid; an airflow generating device that causes the gas that has passed through the liquid in the liquid container to return to the inside of the moving body;

17. 16. The airflow generating device of claim 15, An air flow generating device in which at least one of the first opening, the second opening, the induction hole, the flow path inlet, the flow path outlet, the air intake of the moving body, and the air exhaust port has a valve.

18. 18. An airflow generating device according to any one of claims 15 to 17, The air flow generating device, wherein the moving body is an aircraft, a railway vehicle, or an automobile.

19. 18. An airflow generating device according to any one of claims 15 to 17, The air flow generating device, wherein the separating material is a polymeric material membrane having a large number of nanopores that selectively allow carbon dioxide molecules to pass through.

20. an airflow generating device comprising a first airflow generating device and a second airflow generating device disposed inside a structural wall surface of a moving body, the first airflow generating device comprising: a first main duct disposed on the moving body, the first main duct having a first opening communicating with an air intake opening in the structural wall surface of the moving body toward the front in the moving direction of the moving body; and a second opening communicating with an air exhaust opening in the structural wall surface of the moving body toward the rear in the moving direction of the moving body; a first induction hole bored in the wall surface of the first main duct between the first opening and the second opening; and a first air duct having a flow path outlet communicating with the first induction hole and a flow path inlet disposed in a second atmosphere inside the moving body, the first airflow generating device comprising: a first main duct disposed on the moving body so as to generate a primary flow of a first atmosphere outside the moving body from the first opening to the second opening; a second air flow generating device for generating a secondary flow of the second atmosphere in the first air duct, the second air flow generating device comprising: a second main duct disposed on the movable body, the second main duct having a first opening communicating with an air intake opening in the structural wall surface of the movable body toward the front in the moving direction of the movable body and a second opening communicating with an air exhaust opening in the structural wall surface of the movable body toward the rear in the moving direction of the movable body, the second main duct having a first opening communicating with an air intake ... second induction hole formed in the wall surface of the second main duct between the first opening and the second opening, the second main duct having a flow path outlet communicating with the second induction hole and a flow path inlet disposed in the second atmosphere inside the movable body, the second main duct having a second induction hole formed in the wall surface of the second main duct between the first opening and the second opening, the second main duct having a flow path outlet communicating with the second induction hole and a flow path inlet disposed in the second atmosphere inside the movable body, the second main duct having a second air duct having a second induction hole a first rotor that rotates about a rotation axis due to the secondary flow of the second atmosphere in the first air conduit; a second rotor that rotates about a rotation axis due to the secondary flow of the second atmosphere in the second air conduit; a pump having a suction port and a discharge port, the pump being driven to discharge the second atmosphere drawn in through the suction port of the pump by a rotational force of the first rotor transmitted thereto from the discharge port of the pump; a compressor having an intake port and an exhaust port, the compressor being driven to discharge the second atmosphere, which is sucked in through the intake port of the compressor and compressed by the rotational force of the second rotor, from the exhaust port of the compressor; a separation chamber communicating with the suction port of the pump, the separation chamber having a separation tube therein that selectively permeates carbon dioxide, the separation tube having one end communicating with the exhaust port of the compressor and the other end communicating with the second atmosphere, the separation chamber collecting the gas that has permeated from the separation tube and introducing it into the suction port.

21. 21. The airflow generating device of claim 20, At least one of the first opening, the second opening, the first induction hole, the second induction hole, the flow path inlet, and the flow path outlet has a valve.

22. 22. The airflow generating device according to claim 20 or 21, The air flow generating device, wherein the moving body is an aircraft, a railway vehicle, or an automobile.

23. 22. The airflow generating device according to claim 20 or 21, a liquid container having a liquid therein that dissolves carbon dioxide; an introduction pipe having one end communicating with the discharge port of the pump and the other end positioned in the liquid in the liquid container to allow the gas permeated from the separation tube to pass through the liquid; An airflow generating device that causes the gas that has passed through the liquid in the liquid container to return to the inside of the moving body.

24. 22. The airflow generating device according to claim 20 or 21, The separation tube is an air flow generating device in which a thin film of a polymer material is formed into a tubular shape.

25. An airflow generating device according to any one of claims 10 to 13; a pump having an inlet and an outlet, the pump being driven by the electric power generated by the generator so as to discharge the second atmosphere sucked in through the inlet through the outlet; an airflow generating device comprising: a separation chamber having a separation material therein that selectively allows carbon dioxide to pass therethrough, the separation material dividing the chamber into a front chamber and a rear chamber, the front chamber communicating with a second atmosphere, and the rear chamber connected to the suction port of the pump so as to introduce gas of the second atmosphere that has permeated the separation material from the front chamber into the suction port of the pump.

26. 26. The airflow generating device of claim 25, a liquid container having a liquid therein that dissolves carbon dioxide; an introduction pipe having one end communicating with the discharge port of the pump and the other end positioned in the liquid in the liquid container to allow the gas of the second atmosphere to pass through the liquid; an airflow generating device that causes the gas that has passed through the liquid in the liquid container to return to the inside of the moving body;

27. 26. The airflow generating device of claim 25, The air flow generating device, wherein the moving body is an aircraft, a railway vehicle, or an automobile.

28. An airflow generating device according to any one of claims 10 to 13; a pump having a suction port and a discharge port, the pump being driven by electric power generated by the generator so as to discharge the second atmosphere sucked in through the suction port of the pump from the discharge port of the pump; a compressor having an intake port and an exhaust port, the compressor being driven by electric power generated by the generator so as to discharge the second atmosphere, which has been sucked in through the intake port of the compressor and compressed, from the exhaust port of the compressor; a separation chamber communicating with the suction port of the pump, the separation chamber having a separation tube therein that selectively permeates carbon dioxide, the separation tube having one end communicating with the exhaust port of the compressor and the other end communicating with the second atmosphere, the separation chamber collecting the gas that has permeated from the separation tube and introducing it into the suction port.

29. 29. The airflow generating device of claim 28, a liquid container having a liquid therein that dissolves carbon dioxide; an introduction pipe having one end communicating with the discharge port of the pump and the other end positioned in the liquid in the liquid container to allow the gas permeated from the separation tube to pass through the liquid; An airflow generating device that causes the gas that has passed through the liquid in the liquid container to return to the inside of the moving body.

30. 29. The airflow generating device of claim 28, The air flow generating device, wherein the moving body is an aircraft, a railway vehicle, or an automobile.

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