Air flow generators, filter systems, power generation systems and carbon dioxide removal systems

Abstract

The air purification, power generation, and carbon dioxide removal systems are required to utilize airflow without requiring electricity or mechanically moving parts. These problems are solved by an airflow generating device that generates an airflow as a secondary flow caused by the airflow generated relative to a moving object as a result of the movement of the moving object, or generates an airflow that generates rotational force using airflow from the external atmosphere.

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] Reducing carbon dioxide emissions, which are believed to be the cause of global warming, and managing carbon dioxide emissions are essential technologies for protecting the global environment in the future. Carbon dioxide emissions occur in a variety of places and situations, and reducing and managing the amount of carbon dioxide is necessary in a variety of places. For example, reducing and managing carbon dioxide emissions is required inside buildings such as halls and conference rooms, medical processes in medical institutions, processes involving people, and indoor spaces where many people gather.

[0003] In particular, moving objects such as vehicles and aircraft emit large amounts of carbon dioxide from their power sources and from supporting equipment such as air conditioning systems. In passenger transport vehicles such as passenger aircraft and passenger cars, there is a need to reduce and manage the amount of carbon dioxide contained in the breath of many passengers and crew members, including drivers and pilots, and in dry ice and other cargo in the cargo compartment.

[0004] Furthermore, it is necessary to generate an air flow inside a vehicle for various reasons, such as 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]

[0005] Carbon dioxide removal devices that remove carbon dioxide are relatively large in size, requiring a large amount of land and limited installation locations. If a small carbon dioxide removal device could be created, it could be installed in urban areas or residential areas. Furthermore, if a small carbon dioxide removal device could be created, it could be installed on the rooftop or inside a room of an existing building. Furthermore, it could be installed on moving objects such as automobiles, trains, and airplanes, eliminating the need for specific installation locations, which is advantageous.

[0006] Devices such as compressors and degassing pumps have mechanical moving parts that rotate or reciprocate, which generally result in problems such as large device size and susceptibility to device failure. Furthermore, carbon dioxide removal devices generally require large amounts of power due to the drive devices that generate high-pressure and low-pressure sections, such as compressors and degassing pumps. In particular, in moving objects such as passenger aircraft and passenger cars, which have power consumption restrictions, it is difficult to provide the power needed to drive the carbon dioxide removal device. Therefore, a carbon dioxide removal device with low power requirements is required. Furthermore, a power generation device that not only requires low power but also generates the power needed for drive is also required. Furthermore, in addition to or separately from the carbon dioxide removal device, air purification to remove dust, dirt, viruses, etc. from the air may be required. In such cases, a filter device to remove dust, dirt, viruses, etc. from the air may be required.

[0007] When a vehicle travels at high speed, a large air current is generated outside the vehicle while it is moving, and many air currents exist in nature, such as wind.

[0008] If a pressure difference can be generated using an external air flow, 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 generate an air flow and thereby generate a low-pressure source that can drive a carbon dioxide removal device, a filter device, or a power generation device. Here, a "low-pressure source" is defined as an environment controlled to have a pressure lower than the pressure of the surrounding atmosphere. The air flow 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]

[0009] This problem is solved by an air flow generating device that includes air flow generating means that generates an air flow as a secondary flow caused by an air flow that is generated relative to the moving body as a result of the movement of the moving body, or an air flow generating device that generates a rotational force on a rotating shaft by an air flow in the external atmosphere.

[0010] This problem is solved by a filter system that includes an air flow generating device that generates an air flow as a secondary flow caused by an air flow that occurs relative to the moving body as a result of the moving body's movement, and a filter that is arranged so that the air flow as the secondary flow passes through.

[0011] The problem is solved by an electric power generation system including an air flow generating device having air flow generating means for generating an air flow as a secondary flow caused by an air flow generated relative to the moving body as a result of the movement of the moving body, or air flow means for generating an air flow that generates a rotational force on a rotating shaft by an air flow from the external atmosphere, and a generator having rotors that rotate around a rotating shaft by the air flow as the secondary flow, and a stator that is connected to the rotating shaft.

[0012] The problem is solved by an air flow generating device that includes air flow generating means that generates an air flow as a secondary flow caused by an air flow generated relative to the moving body as a result of the movement of the moving body, or air flow means that generates an air flow that generates a rotational force on a rotating shaft using an air flow from the external atmosphere, a pump that is driven by the rotational force of the rotating shaft, a separation device that includes a separation material inside that selectively allows carbon dioxide to pass through, and a carbon dioxide treatment device that decomposes and processes carbon dioxide.

[0013] The problem is solved by a carbon dioxide removal system comprising: an air flow generating device that generates an air flow as a secondary flow caused by an air flow generated relative to the moving body as a result of the movement of the moving body, or an air flow generating device equipped with air flow means that generates an air flow that generates a rotational force on a rotating shaft using an air flow from the external atmosphere; a pump that is driven by the rotational force of the rotating shaft generated by the air flow generating device; a separator that has a separating material inside that selectively allows carbon dioxide to pass through; and a carbon dioxide treatment device that decomposes and processes carbon dioxide. [Effects of the Invention]

[0014] This means: Remove carbon dioxide Relatively A small, compact carbon dioxide removal device can be realized. By utilizing airflow, a carbon dioxide removal device requiring less power can be realized. Furthermore, it is possible to generate power for driving. It is also possible to purify the air by removing dust, dirt, viruses, and the like from the air. The relative airflow that occurs inside a moving body can be used to generate power and remove impurities and carbon dioxide from the air without requiring power, which is one of the processes that generates carbon dioxide due to the relative airflow that occurs inside the moving body. [Brief explanation of the drawings]

[0015] [Figure 1A]FIG. 1 is a conceptual block diagram illustrating an air flow generating device 100 (embodiment 1), a filter system 200 (embodiment 2), a power generation system 300 (embodiment 3), and a carbon dioxide removal system 400 (embodiment 4) to which the air flow generating device 100 (embodiment 1) is applied. [Figure 1B] FIG. 1B is a block diagram conceptually showing a carbon dioxide removal system 400A according to a first embodiment of the carbon dioxide removal system 400 shown in FIG. 1A. [Figure 2A] 1 is a diagram showing an airflow generation device 100A according to a first mode of the first embodiment. [Figure 2B] FIG. 10 is a diagram showing an airflow generation device 100B according to a second aspect of the first embodiment. [Figure 2C] FIG. 10 is a diagram showing an airflow generation device 100C according to a third aspect of the first embodiment. [Figure 3A] FIG. 10 is a diagram showing a filter system 200 according to a second embodiment. [Figure 3B] FIG. 10 is a diagram showing a power generation system 300A according to a first aspect of the third embodiment. [Figure 3C] FIG. 10 is a diagram showing a power generation system 300B according to a second aspect of the third embodiment. [Figure 4A] FIG. 10 is a diagram showing a carbon dioxide removal system 400A according to a first aspect of the fourth embodiment. [Figure 4B] FIG. 4 illustrates a separation device for a carbon dioxide removal system 400. [Figure 4C] FIG. 1 is a diagram illustrating an example of a carbon dioxide treatment device in a carbon dioxide removal system. [Figure 4D] FIG. 10 is a diagram showing another example of a carbon dioxide treatment device in a carbon dioxide removal system. [Figure 4E] FIG. 10 is a diagram showing a carbon dioxide removal system 400 according to another aspect of the first aspect of the fourth embodiment. [Figure 5] FIG. 10 is a diagram showing a carbon dioxide removal system 400 according to a second aspect of the fourth embodiment. [Figure 6] FIG. 1 is a diagram showing an airflow generating device 100 of an embodiment A1. [Figure 7A]FIG. 10 is a perspective view of an airflow generating device according to embodiment A2 of the present invention. [Figure 7B] FIG. 10 is a cross-sectional view showing the state in which the air flow generating device of embodiment A2 of the present invention is applied to the interior of a vehicle. [Figure 7C] FIG. 10 is a perspective view of another form of the airflow generating device according to embodiment A2 of the present invention. [Figure 7D] FIG. 10 is a system diagram of an air flow generating device according to an embodiment A2 of the present invention. [Figure 7E] FIG. 10 is a diagram showing an example of use of the airflow generating device according to embodiment A2 of the present invention. [Figure 8A] FIG. 10 is a perspective view showing an example of an air intake and an air outlet when the airflow generating device of embodiment A2 of the present invention is applied to an aircraft. [Figure 8B] FIG. 10 is a perspective view showing an example of an air intake and an air exhaust when the air flow generating device of embodiment A2 of the present invention is applied to a railway vehicle. [Figure 9] FIG. 10 is a cross-sectional view showing the state in which the air flow generating device of Example A3 is applied to the interior of a vehicle. [Figure 10A] FIG. 1 is a perspective view of a filter system according to an embodiment B1 of the present invention. [Figure 10B] FIG. 1 is a system diagram of a filter system according to an embodiment B1 of the present invention. [Figure 11A] FIG. 2 is a perspective view of a power generation system according to a first mode of embodiment C1 of the present invention. [Figure 11B] FIG. 2 is a system diagram of a power generation system according to a first mode of an embodiment C1 of the present invention. [Figure 11C] FIG. 10 is a perspective view of a power generation system according to an embodiment C2 of the present invention. [Figure 11D] FIG. 10 is a system diagram of a power generation system according to an embodiment C2 of the present invention. [Figure 12A] FIG. 1 is a perspective view of a carbon dioxide removal system according to an embodiment D1 of the present invention. [Figure 12B] FIG. 1 is a system diagram of a carbon dioxide removal system according to Example D1 of the present invention. [Figure 12C] FIG. 1 is a perspective view of a carbon dioxide removal system according to Example D2 of the present invention. [Figure 12D]FIG. 1 is a system diagram of a carbon dioxide removal system according to Example D2 of the present invention. [Figure 13A] FIG. 1 is a perspective view of a carbon dioxide removal system according to embodiment D3 of the present invention. [Figure 13B] FIG. 1 is a system diagram of a carbon dioxide removal system according to Example D3 of the present invention. [Figure 13C] FIG. 1 is a perspective view of a carbon dioxide removal system according to Example D4 of the present invention. [Figure 13D] FIG. 1 is a system diagram of a carbon dioxide removal system according to Example D4 of the present invention. [Figure 14] FIG. 10 is a system diagram of one specific example of a carbon dioxide removal system according to Example D4 of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] [Embodiment Mode] Possible embodiments of the present invention include an airflow generation device 100, a filter system 200, a power generation system 300, and a carbon dioxide removal system 400. Hereinafter, with reference to Figures 1A and 1B, the airflow generation device 100, the filter system 200, the power generation system 300, and the carbon dioxide removal system 400 will be described as Embodiments 1 to 4, respectively.

[0017] All of the airflow generating devices 100 according to the first embodiment are defined as devices that utilize airflow, and there are three representative major aspects. The airflow generating device 100A of the first aspect is an aspect of airflow means that directly utilizes the airflow of the air outside the moving body (first atmosphere) relative to the moving body, which is generated by the moving body's movement, or that utilizes a naturally occurring airflow, such as an external wind, rather than the movement of the moving body. It is an airflow means that generates an airflow that generates a rotational force on a rotating shaft using the airflow of the external atmosphere. The airflow generating device 100B of the second aspect is an aspect of airflow generating means that utilizes an airflow (second atmosphere) generated by the pressure gradient of the atmosphere inside the moving body, which is generated by the flow of the first atmosphere, and generates an airflow as a secondary flow generated by the airflow generated relative to the moving body due to the movement of the moving body. The airflow generating device 100C of the third aspect is an aspect that combines the first and second aspects, in which the airflow generating device 100A of the first aspect is applied to the airflow generating device 100B of the second aspect.

[0018] The filter system 200 of the second embodiment and the power generation system 300 of the third embodiment are both filter systems 200 and power generation systems 300 that utilize the airflow generation device 100 of the first embodiment.

[0019] The carbon dioxide removal system 400 of the fourth embodiment can take two forms: a first form (carbon dioxide removal system 400A) and a second form (carbon dioxide removal system 400B). The carbon dioxide removal system 400A of the first form uses air flow generator 100A and air flow generator 100C, while the carbon dioxide removal system 400B of the second form uses air flow generator 100B. The carbon dioxide removal system 400A of the first form and the carbon dioxide removal system 400B of the second form are conceptually shown in FIG. 1A, with the carbon dioxide removal system 400A of the first form being particularly shown in FIG. 1B.

[0020] Below, the air flow generating device 100 of the first embodiment, the filter system 200 of the second embodiment, the power generating system 300 of the third embodiment, and the carbon dioxide removal system 400A of the first aspect of the fourth embodiment will first be outlined with reference to Fig. 1A, followed by an outline of the carbon dioxide removal system 400B of the second aspect of the fourth embodiment with reference to Fig. 1B. After that, the air flow generating device 100 of the first embodiment, the filter system 200 of the second embodiment, the power generating system 300 of the third embodiment, and the carbon dioxide removal system 400 of the fourth embodiment will each be explained in detail.

[0021] 1A is a conceptual diagram showing an airflow generation device 100 according to an embodiment of the present invention, a filter system 200 using the same, a power generation system 300, and a carbon dioxide removal system 400. Typically, the airflow generation device 100 is functionally connected to a wake arrangement device X in a manner appropriate for each. The connection manner between the airflow generation device 100 and the wake arrangement device X will be described in detail below in the respective descriptions of Embodiments 1 to 4. The wake arrangement device X is selected from any one of a filter device 250, a power generation device 350, and a carbon dioxide removal device 450.

[0022] 1A is a diagram showing a filter system 200, a power generation system 300, and a carbon dioxide removal system 400 when each of these wake arrangement devices X is selected. That is, the filter system 200 includes the air flow generation device 100 and the filter device 250, the power generation system 300 includes the air flow generation device 100 and the power generation device 350, and the carbon dioxide removal system 400A includes the air flow generation device 100 and the carbon dioxide removal device 450. When FIG. 1A shows the filter system 200, the filter device 250 is applied, when the power generation system 300 is shown, the power generation device 350 is applied, and when the carbon dioxide removal system 400A is shown, the carbon dioxide removal device 450 is applied.

[0023] FIG. 1B is a conceptual diagram of FIG. 1A that particularly illustrates the features of a carbon dioxide removal system 400A of a first aspect of embodiment 4 of the present invention. The drive source DS is a drive source that generates a rotational force of a rotating shaft so as to transmit the rotational force to the carbon dioxide removal device 450. As described below, the carbon dioxide removal device 450 includes a compressor 452 and a degassing pump 453. The drive source DS is a drive means that generates an air flow that generates a rotational force of a rotating shaft that drives the compressor 452 and the degassing pump 453. The rotational force generated by the drive source DS is transmitted as a drive force to the compressor 452 and the degassing pump 453. The drive source DS is the air flow generation device 100A of the first aspect of embodiment 1 and the air flow generation device 100C of the third aspect, as drive means that generates an air flow that generates a rotational force of a rotating shaft using an air flow from the external atmosphere. Another embodiment of the drive source DS is a drive device that is an electric motor or engine that rotates the drive shaft so as to generate rotational force on the rotating shaft by an electric motor or an internal combustion engine without using air flow, rather than an air flow means that uses air flow from the external atmosphere.

[0024] The airflow generating device 100 of the first embodiment, the filter system 200 of the second embodiment, the power generation system 300 of the third embodiment, and the carbon dioxide removal system 400 of the fourth embodiment will be described in detail below.

[0025] (Embodiment 1: Airflow Generating Device 100) The airflow generating device 100 is applied by being mounted on a moving vehicle (hereinafter referred to as "mobile body"). Mobile bodies are vehicles that travel particularly at high speeds, such as automobiles, aircraft such as passenger planes, and railway vehicles such as bullet trains and conventional trains.

[0026] The air flow generating device 100 has three representative embodiments according to the present invention. The air flow generating device 100A of the first embodiment utilizes the airflow of the external atmosphere. The air flow generating device 100A of the first embodiment directly utilizes the relative flow of air (first atmosphere) outside the moving body caused by the movement of the moving body, or directly utilizes an airflow generated by the external atmosphere, such as wind. The air flow generating device 100B of the second embodiment utilizes the flow of the atmosphere (second atmosphere) inside the moving body caused by the flow of the first atmosphere. The air flow generating device 100C of the third embodiment is an embodiment in which the air flow generating device 100A of the first embodiment is applied to the air flow generating device 100B of the second embodiment.

[0027] The relative flow of the first atmosphere with respect to the moving body is an external air flow relative to the moving body that occurs when the moving body moves. The flow of the second atmosphere inside the moving body is an air flow inside the moving body that is induced by a decrease in static pressure in the first atmosphere that occurs due to the relative flow of the first atmosphere. Three embodiments of the air flow generating device 100A, the air flow generating device 100B, and the air flow generating device 100C will be described below with reference to Figures 2A to 2C.

[0028] (Air flow generating device 100A of the first embodiment) First, referring to FIG. 2A , a first embodiment of the airflow generating device 100A will be described. The first embodiment of the airflow generating device 100A includes a plurality of blades 101, a rotating shaft 102, and an outer wall 103 disposed downstream of the plurality of blades 101. The plurality of blades 101 are disposed around the rotating shaft 102, and generate a rotational force for the rotating shaft 102 due to an airflow from the external atmosphere. The plurality of blades 101 are arranged in accordance with the airflow so as to rotate the rotating shaft 102. For example, the rotating shaft 102 may be configured to rotate around its central axis due to an airflow WV in a direction along the axial direction of the rotating shaft 102, or may be configured to rotate around its central axis due to an airflow perpendicular to the axial direction of the rotating shaft 102. In response to these various types of airflow, the rotating shaft 102 is rotatably disposed around the rotating shaft 102, which serves as the center of rotation, by the plurality of blades 101. In the airflow generating device 100A, the flow of the first atmosphere rotates the multiple blades 101 and the rotating shaft 102, and the rotating shaft 102 transmits the rotational force. The airflow generating device 100A functions to transmit the rotational force for driving a compressor or a degassing pump (described later) via the rotating shaft 102. The multiple blades 101 do not need to be housed in an outer wall 103 serving as a housing as shown in FIG. 2A , but may be exposed, for example, like a windmill. The flow of the first atmosphere may be a relative air flow of the first atmosphere with respect to the moving object caused by the movement of the moving object, or may be an air flow of the external atmosphere such as wind. The outer wall 103 can be arranged as necessary to strengthen the airflow. An example of arranging the outer wall 103 will be described below.

[0029] Furthermore, the airflow generating device 100A includes an air intake 103a exposed to the outside for taking in a first atmosphere, and an exhaust port 103b for exhausting the first atmosphere. The outer wall 103 forms an outer wall that isolates the air intake 103a and the exhaust port 103b from the outside. The airflow generating device 100A is typically a so-called fan, and the relative flow of the first atmosphere causes the multiple blades 101 and the rotating shaft 102 to rotate, thereby also functioning to take the first atmosphere into the outer wall 103 inside the airflow generating device 100A. The rotating shaft 102 rotates as the airflow flows from the air intake 103a to the exhaust port 103b.

[0030] (Air flow generating device 100B of second embodiment) Next, an air flow generation device 100B of a second embodiment will be described with reference to FIG. 2B . The air flow generation device 100B of the second embodiment includes a main duct 110 and an air conduit 130. The main duct 110 has an opening 110a, which is exposed to the outside at one end and serves as an inlet for taking in a first atmosphere, and an opening 110b, which is an outlet for discharging the first atmosphere, at the other end. A primary flow P of the first atmosphere is generated from the opening 110a, which serves as an inlet, to the opening 110b, which serves as an outlet. The primary flow P is a flow that is generated by the movement of the mobile object and that is taken into the main duct 110. The air conduit 130 is fluidly connected to the main duct 110 via an induction hole 111a at one end thereof. The static pressure of the first atmosphere in the main duct 110 decreases due to the flow velocity of the primary flow P, and the pressure in the induction hole 111a in the air conduit 130 decreases. As a result, a secondary flow Q is generated as an air flow of the second atmosphere in the air conduit 130. A specific example of the air flow generation device 100B of the second aspect will be described later.

[0031] (Air flow generating device 100C of third embodiment) Next, referring to FIG. 2C , an airflow generating device 100C of a third embodiment will be described. The airflow generating device 100C of the third embodiment is a combination of the airflow generating device 100B of the second embodiment and the airflow generating device 100A of the first embodiment. The airflow generating device 100A and the airflow generating device 100B used in the third embodiment are the same as those in the first and second embodiments. The airflow generating device 100A of the first embodiment is disposed in the secondary flow Q of the second atmosphere of the airflow generating device 100B of the second embodiment. Descriptions of the same parts as those in the first and second embodiments will be omitted. In the airflow generating device 100C of the third embodiment, the air intake 103a of the airflow generating device 100A of the first embodiment is disposed at the outlet 111b of the air conduit 130. The secondary flow Q of the second atmosphere rotates the multiple blades 101 of the air flow generation device 100A, and the force of the relative flow of the second atmosphere is transmitted as a rotational force of the rotating shaft 102. In the air flow generation device 100C of the third embodiment, air is also discharged from the outlet 103b. The biggest difference between the air flow generation device 100C of the third embodiment and the air flow generation device 100A of the first embodiment is that, in the air flow generation device 100A of the first embodiment, the multiple blades 101 and the rotating shaft 102 rotate due to the atmosphere flow taken in from the air intake 103a to the outer wall 103, but in the air flow generation device 100C of the third embodiment, the multiple blades 101 and the rotating shaft 102 rotate due to the atmosphere flow from the outlet 103b.

[0032] (Embodiment 2: Filter System 200) Referring to FIG. 3A, a filter system 200 according to an embodiment of the present invention will be described. The filter system 200 includes an airflow generator 100 and a filter device 250, which is a wake arrangement device X, fluidly connected to each other by a wake duct 1001. The filter device 250 includes a filter medium 251 therein. In the filter system 200, the airflow generator 100 can be any of the airflow generator 100A of the first embodiment, the airflow generator 100B of the second embodiment, or the airflow generator 100C of the third embodiment. However, the airflow generator 100B of the second embodiment is particularly effective. In this case, the air conduit 130 of the airflow generator 100B of the second embodiment serves as the wake duct 1001, and the flow path inlet 130a and flow path outlet 130b of the air conduit 130 serve as the inlet 1001a and outlet 1001b of the wake duct 1001. When the airflow generator 100A of the first embodiment or the airflow generator 100C of the third embodiment is used, the airflow generator 100A and the airflow generator 100C function as a rectifier. In these cases, the inlet 1001a of the wake duct 1001 is connected to the outlet 103b of the airflow generator 100A, and the outlet 1001b of the wake duct 1001 is connected to the inlet of the filter device 250. By placing the filter device 250 including the filter media 251 downstream of the airflow generator 100, the airflow generator 100 can function as a filter system 200. By selecting an appropriate material for the filter media 251 depending on the target to be captured, the filter media 251 can capture impurities contained in the air introduced from the wake duct 104. A specific example of the filter system 200 will be described later.

[0033] (Third embodiment: power generation system 300) 3B and 3C, a power generation system 300 according to an embodiment of the present invention will be described. The power generation system 300 includes an airflow generating device 100 and a power generation device 350 serving as a wake arrangement device. The power generation system 300 can take two forms. The power generation system 300A of the first form uses the airflow generating device 100B of the second form. The air conduit 130 of the airflow generating device 100B of the second form serves as a wake duct 1001, and the flow path inlet 130a and flow path outlet 130b of the air conduit 130 serve as an inlet 1001a and an outlet 1001b of the wake duct 1001. The power generation system 300B of the second form uses the airflow generating device 100A of the first form or the airflow generating device 100C of the third form. In the power generation system 300B, an inlet 1001a of a wake duct 1001 is connected to an outlet 103b of the airflow generation device 100A, and an outlet 1001b of the wake duct 1001 is connected to an inlet of a filter device 250. That is, the power generation system 300A of the first embodiment utilizes the secondary air flow inside the air conduit 130, which is the wake duct 1001. On the other hand, the power generation system 300B of the second embodiment utilizes the rotational force of the rotating shaft 102 generated by the airflow generation device 100A of the first embodiment or the airflow generation device 100C of the third embodiment.

[0034] First, a power generation system 300A of a first embodiment will be described with reference to Fig. 3B. In the power generation system 300A of the first embodiment, a power generation device 350A, which is a wake arrangement device X, is fluidly connected to the air conduit 130 of the airflow generating device 100B of the second embodiment, which is a wake duct 1001. The power generation device 350A is equipped with a rotor blade row 351 and a generator 352 inside. The rotor blade row 351 is rotated by air introduced from the flow path outlet 130b of the air conduit 130 of the airflow generating device 100B, and the rotation of the rotor blade row 351 causes a power generating body (not shown) in the generator 352 to rotate within a magnetic field (not shown), thereby functioning as the power generation system 300A that generates electricity. The rotor blade row 351 may be caused to rotate in a direction perpendicular to the flow direction of the airflow introduced from the air duct 130, which is the wake duct 1001, or may be caused to rotate around a shaft in a direction along the flow direction of the airflow introduced from the air duct 130, which is the wake duct 1001. The rotor blade row 351 may be rotated by the airflow introduced from the air duct 130, which is the wake duct 1001, thereby rotating the rotary shaft 351a and operating the generator 352.

[0035] A power generation system 300B of a second embodiment will be described with reference to FIG. 3C . In the power generation system 300B of the second embodiment, a power generation device 350, which is a wake arrangement device X, is fluidly connected to the airflow generating device 100. The airflow generating device 100 applied here can be either the airflow generating device 100A of the first embodiment or the airflow generating device 100C of the third embodiment. The power generation device 350B includes a generator 352. The generator 352 of the power generation device 350B is connected to the rotating shaft 102 of the airflow generating device 100A of the first embodiment or the airflow generating device 100C of the third embodiment. The rotational force of the rotating shaft 102 of the airflow generating device 100A of the first embodiment or the airflow generating device 100C of the third embodiment causes a power generating body (not shown) in the generator 352 of the power generation device 350B to rotate in a magnetic field (not shown), thereby functioning as the power generation system 300B to generate electricity. Specific examples of the power generation system 300, namely, a first embodiment power generation system 300A and a second embodiment power generation system 300B, will be described later.

[0036] (Embodiment 4: Carbon Dioxide Removal System 400) As described above, the carbon dioxide removal system 400 of the fourth embodiment is classified into a first aspect of the carbon dioxide removal system 400A that uses the air flow generation device 100A and the air flow generation device 100C, and a second aspect of the carbon dioxide removal system 400B that uses the air flow generation device 100C. Each aspect will be described below.

[0037] The carbon dioxide removal system 400A of the first embodiment is an embodiment that uses a driving source DS (particularly the embodiment shown in FIG. 1B). The carbon dioxide removal system 400A of the first embodiment will be described with reference to FIGS. 4A to 4D. The carbon dioxide removal device 450 connected to the driving source DS includes a separator 451, a compressor 452, a degassing pump 453, and a carbon dioxide treatment device 454.

[0038] The drive source DS is connected to the carbon dioxide removal device 450. The carbon dioxide removal device 450 includes both a compressor 452 and a degassing pump 453. The compressor 452 includes a compressor suction port, a compressor discharge port, and a compressor rotating shaft 452S. The compressor 452 draws gas through the compressor suction port, compresses it to the compressor discharge port, and discharges it as the compressor rotating shaft 452S rotates. Any type of compressor can be used as the compressor 452 as long as the gas drawn in can be compressed in the process from the compressor suction port to the compressor discharge port as the compressor rotating shaft 452S rotates. The compressor 452 can be, for example, a rotary compressor that compresses gas by the rotation of the compressor rotating shaft 452S, or a reciprocating compressor that compresses gas by converting the rotation of the compressor rotating shaft 452S into reciprocating motion. The degassing pump 453 has a pump suction port, a pump discharge port, and a pump rotating shaft 453S. The degassing pump 453 draws gas through the pump suction port, compresses it, and discharges it through the pump discharge port as the pump rotating shaft 453S rotates. Any type of degassing pump can be used as the degassing pump 453, as long as it can draw gas from the pump suction port to the pump discharge port as the pump rotating shaft 453S rotates. The degassing pump 453 can be, for example, a rotary degassing pump (using a rotor, or a scroll or rotary that moves a predetermined volume) that draws gas by rotating the pump rotating shaft 453S, or a reciprocating degassing pump that converts the rotation of the pump rotating shaft 453S into reciprocating motion to compress the gas.

[0039] The drive source DS has a rotating shaft, which is connected to the compressor rotating shaft 452S and the pump rotating shaft 453S so as to be able to transmit a rotational force. Figures 4A and 4B show this state schematically. The drive shaft of the drive source DS transmits a rotational force to the compressor rotating shaft 452S and the pump rotating shaft 453S to rotate them and drive the compressor 452 and the degassing pump 453, respectively.

[0040] The drive source DS is, for example, a drive means for generating an airflow from an external ambient airflow, which generates a torque on a rotating shaft, in the airflow generating device 100A of the first aspect of the first embodiment and the airflow generating device 100C of the third aspect of the first embodiment. For example, the drive source DS may be a drive device that utilizes an airflow such as wind, or a relative airflow generated by the movement of a moving object. Another aspect of the drive source DS is a drive device that is an electric motor or an engine, which rotates a drive shaft by an electric motor or an internal combustion engine to generate a torque on the rotating shaft.

[0041] Various modes can be used for coupling the drive shaft of the drive source DS to each of the compressor rotary shaft 452S and the pump rotary shaft 453S. As long as the rotational force of the drive shaft of the drive source DS can be transmitted to each of the compressor rotary shaft 452S and the pump rotary shaft 453S, any conceivable coupling mode can be used. While FIG. 4A illustrates the drive shaft of the drive source DS in parallel with each of the compressor rotary shaft 452S and the pump rotary shaft 453S, this is not limiting. For example, the drive shaft of the drive source DS can be coaxially coupled to at least two of the compressor rotary shaft 452S and the pump rotary shaft 453S, or all of them can be coaxially coupled. Furthermore, when the drive shaft of drive source DS and at least two of compressor rotary shaft 452S and pump rotary shaft 453S are coaxially coupled, or when none of them are coaxially coupled, the drive shaft of drive source DS may be coupled via a rotary belt or gears so that the rotational force of the drive shaft of drive source DS can be transmitted to compressor rotary shaft 452S and / or pump rotary shaft 453S. Figure 4A is understood to be a schematic and conceptual illustration of all of these coupling modes.

[0042] 4A schematically shows one drive source DS, two drive sources DS may be provided, with their respective drive shafts coupled to the compressor rotation shaft 452S and the pump rotation shaft 453S so as to transmit rotational force to each other. When the drive source DS is the airflow generation device 100A, the compressor rotation shaft 452S and the pump rotation shaft 453S are coupled to the rotation shaft 102 of the airflow generation device 100A so as to transmit rotational force.

[0043] The rotational force of the drive source DS is transmitted to the rotary shaft 452S of the compressor 452 to operate the compressor 452, and is also transmitted to the rotary shaft 453S of the degassing pump 453 to operate the degassing pump 453. When the compressor 452 operates, air taken in through the compressor intake port is compressed by the compressor 452 and introduced into the front chamber 451a of the separation device 451. On the other hand, when the degassing pump 453 operates, the inside of the rear chamber 451b of the separation device 451 is degassed, thereby reducing the back pressure of the rear chamber 451b relative to the front chamber 451a.

[0044] Separator 451 is separated into front chamber 451a and rear chamber 451b by carbon dioxide separator 451c. Front chamber 451a is fluidly connected to compressor 452 via pipe 455 on the upstream side, and is connected to pipe 457 on the downstream side, through which pipe it is opened to the atmosphere. Rear chamber 451b has front chamber 451a on the upstream side, and is fluidly connected to degassing pump 453 via carbon dioxide pipe 456 on the downstream side. Gas degassed by degassing pump 453 is released to the atmosphere via degassing pipe 458. Carbon dioxide removal system 400 has both compressor 452 and degassing pump 453, and by pressurizing front chamber 451a with compressor 452 and depressurizing rear chamber 451b with degassing pump 453, it is possible to create a large pressure difference between front chamber 451a and rear chamber 451b, thereby realizing a small carbon dioxide removal device.

[0045] Here, referring to FIG. 4B, separation device 451 will be described. Separator 451 includes separation material 451c, front chamber 451a, and rear chamber 451b. Separator 451 is partitioned into front chamber 451a and rear chamber 451b by separation material 451c. In FIG. 4A, front chamber 451a and rear chamber 451b are shown in separation device 451 as a single chamber. In an embodiment of the present invention, front chamber 451a and rear chamber 451b do not necessarily have to be a single chamber. This includes a case where multiple separation materials 451c are used to partition the device into multiple front chambers 451a and multiple rear chambers 451b, and also includes a case where multiple front chambers 451a are defined as a single set of front chambers 451a and multiple rear chambers 451b are defined as a single set of rear chambers 451b. Furthermore, the shape of the plurality of separation members 451c may be complex, and separation device 451 includes all aspects as long as separation member 451c divides separation device 451 into front chamber 451a and rear chamber 451b.

[0046] The separation material 451c is made of a material that can selectively separate carbon dioxide molecules from oxygen molecules and nitrogen molecules by its molecular sieve effect on carbon dioxide molecules. The separation device 451 is equipped with an inlet P, an air outlet Q, and a carbon dioxide outlet R. The inlet P is an opening for introducing air (oxygen and nitrogen) containing carbon dioxide into the separation device 451. The air outlet Q is an outlet for discharging oxygen and nitrogen, which are air components from which carbon dioxide has been separated by the separation material 451c. On the other hand, the carbon dioxide outlet R is an outlet for discharging carbon dioxide separated from oxygen and nitrogen, which are air components containing carbon dioxide, from the separation device 451. The inlet P and the air outlet Q are connected to the front chamber 451a but not to the rear chamber 451b. Conversely, the carbon dioxide outlet R is connected to the rear chamber 451b but not to the front chamber 451a. The inlet P is located at the end opposite the air outlet Q.

[0047] Specifically, the average molecular diameter of carbon dioxide molecules is 0.33 nanometers, with a nominal variation of 0.32 to 0.34 nanometers. The average molecular diameter of oxygen molecules is 0.34 nanometers, with a nominal variation of 0.34 to 0.36 nanometers. The average molecular diameter of nitrogen molecules is 0.36 nanometers, with a nominal variation of 0.36 to 0.38 nanometers. The separation material 451c is made of a material with a large number of permeation pores smaller than 0.34 nanometers and larger than 0.33 nanometers, and is capable of exhibiting a molecular sieve effect on carbon dioxide molecules, such that carbon dioxide molecules pass through the permeation pores of the separation material 451c, but nitrogen and oxygen molecules do not. In this way, various materials can be selected as materials that exhibit a molecular sieve effect on carbon dioxide molecules.

[0048] Separation material 451c is a material capable of selectively separating carbon dioxide molecules from oxygen and nitrogen. As shown in FIG. 4B , separation material 451c can be a porous material formed by bundling many elongated thin tubes 4511, each of which has perforations 4511a with a diameter that allows carbon dioxide molecules to pass through but not nitrogen or oxygen molecules. The bundle of many elongated thin tubes 4511 forms front chamber 451a. Thin tubes 4511 can be formed from various materials. Thin tubes 4511 with perforations 4511a can be formed from a porous material. For example, thin tubes 4511, which are separation material 451c, can be formed from a polyimide film with perforations 4511a with a diameter that allows carbon dioxide molecules to pass through but not nitrogen or oxygen molecules, and the thin tubes 4511 can be arranged in a cluster. For example, a carbon dioxide separation module manufactured by UBE Corporation can be used.

[0049] The thin tube 4511 having the through holes 4511a may be formed of porous carbon fiber in a tubular shape, with gaps that allow carbon dioxide molecules to pass through but prevent nitrogen and oxygen molecules from passing through. For example, porous carbon fiber manufactured by Toray Industries, Inc. may be used.

[0050] The capillaries 4511 may be formed as a cluster of numerous ceramic particles having gaps, and by applying a solvent, the gaps may be formed into permeable holes 4511a that allow carbon dioxide molecules to pass through but block nitrogen and oxygen molecules. For example, the capillaries may be formed from a DDR-type zeolite membrane for carbon dioxide separation manufactured by NGK INSULATORS, LTD.

[0051] Separation material 451c is not limited to the materials described here, and various materials can be used as long as they are capable of selectively separating carbon dioxide molecules from oxygen and nitrogen. Furthermore, various materials can be used as separation material 451c as long as they have permeable holes 4511a that penetrate from the front to the back and have a diameter that allows carbon dioxide molecules to pass through but not nitrogen molecules and oxygen molecules. As long as separation material 451c divides the chamber into front chamber 451a and rear chamber 451b, it is defined as separation device 451.

[0052] A rear chamber 451b is arranged outside a front chamber 451a formed as a bundle of elongated thin tubes 4511. The front chamber 451a is defined as the inside of the elongated thin tubes 4511, and the rear chamber 451b is defined as the outside of the elongated thin tubes 4511. One end of each bundle of elongated thin tubes 4511 is an inlet P, and the other end opposite thereto is an air outlet Q. A carbon dioxide outlet R is arranged in the rear chamber 451b. A pipe 457 for discharging oxygen and nitrogen, which are air components, is connected to the air outlet Q, and a carbon dioxide pipe 456, which is a pump pipe for discharging carbon dioxide, is connected to the carbon dioxide outlet R. The front chamber 451a and the rear chamber 451b are connected by a permeation hole 4511a. The permeation hole 4511a allows carbon dioxide to pass through but not nitrogen molecules and oxygen molecules. Therefore, the carbon dioxide separated from the oxygen and nitrogen passes through the permeation hole 4511a and flows into the rear chamber 451b, and is then discharged from the separation device 451 via a carbon dioxide pipe 456, which serves as a pump pipe connected from the rear chamber 451b to a carbon dioxide outlet R. The separation material 451c is formed by bundling elongated thin tubes 4511 and has high fluid resistance. When air containing carbon dioxide is pressurized and introduced into the separation material 451c through an inlet P at one end of the thin tubes 4511, the carbon dioxide-containing air flows through each of the many bundled elongated thin tubes 4511. During this process, the carbon dioxide flows out of the thin tubes 4511 through the permeation hole 4511a. As the air reaches the air outlet 4c at one end of the thin tubes 4511, the carbon dioxide is removed from the air, and oxygen and nitrogen, which are components of the air, are discharged from the air outlet Q. Separation material 451c is a long thin tube 4511 with a large fluid resistance, and therefore, unless pressurized, air containing carbon dioxide will not flow into tube 4511. On the other hand, as long as air containing carbon dioxide is pressurized and flowed inside tube 4511, all of the carbon dioxide flows out of tube 4511 from permeation hole 4511a, and the air discharged from air outlet Q does not contain carbon dioxide. 4A, when 200 milliliters (approximately 0.24 grams) of air at standard atmospheric pressure contains 0.04 percent (approximately 0.00016 grams) of carbon dioxide at point A where the carbon dioxide is drawn into compressor 452, if compressor 452 pressurizes point B, which represents front chamber 451a, to 0.4 megapascals and reduces the pressure at point D of carbon dioxide pipe 456, which represents the pressure in back chamber 451b connected to degassing pump 453, to minus 94 megapascals, the amount of carbon dioxide in the gas released to the atmosphere at point C of pipe 457 via front chamber 451a of separator 451 is zero grams (0 percent) by weight. On the other hand, at point D of carbon dioxide pipe 456, which passes from front chamber 451a of separator 451 through separation material 451c to back chamber 451b and connects to degassing pump 453, the same amount of carbon dioxide as at point B, 0.04 percent (approximately 0.00016 grams), can be confirmed. This indicates that separator 451 can selectively separate and remove all carbon dioxide based on a standard of 0.04 percent (approximately 0.00016 grams) of carbon dioxide per 200 milliliters (approximately 0.24 grams) of air at standard atmospheric pressure. If a larger amount of carbon dioxide than this is supplied to front chamber 451a of separator 451, or if the pressure difference between compressor 452 and degassing pump 453 is not ensured, there is a possibility that carbon dioxide will be mixed at point C of pipe 457 via front chamber 451a. Therefore, a valve (not shown) can be installed between front chamber 451a and pipe 457, and the opening and closing amount of the valve can be adjusted to ensure the flow rate to rear chamber 451b.

[0053] Carbon dioxide removal system 400A further includes carbon dioxide treatment device 454. Carbon dioxide treatment device 454 decomposes and removes carbon dioxide that selectively passes through separation material 451c of separator 451 and is discharged from rear chamber 451b through carbon dioxide pipe 456. Carbon dioxide treatment device 454 is defined as a device having at least the function of storing carbon dioxide. Carbon dioxide treatment device 454 can be, for example, a tank capable of storing carbon dioxide therein. In the case of a tank, it is detachably attached to carbon dioxide discharge end 55a of carbon dioxide piping 55, and when the tank serving as carbon dioxide treatment device 454 is filled with carbon dioxide, it enables the carbon dioxide inside to be decomposed and disposed of by external carbon dioxide disposal equipment.

[0054] The carbon dioxide treatment device 454 has a certain volume capable of storing carbon dioxide and is capable of internally decomposing carbon dioxide. As shown in FIG. 4C , the carbon dioxide treatment device 454 includes an electrolyte 454a, such as an aqueous solution or alcohol solution, that readily dissolves carbon dioxide. The carbon dioxide pipe 456 passes through the electrolyte 454a. The carbon dioxide that passes through the electrolyte 454a dissolves in water and is decomposed, resulting in a CO2-free gas that is discharged through the degassing pipe 458. For example, if the electrolyte is water, 1.45 grams of carbon dioxide can be completely dissolved in 1 kilogram of water. Therefore, by refluxing the necessary amount of electrolyte according to the amount of carbon dioxide supplied, the carbon dioxide flowing from the carbon dioxide pipe 456 to the carbon dioxide treatment device 454 can be almost completely decomposed. Furthermore, the carbon dioxide treatment device 454 can also include an electrolysis device 4541, as shown in FIG. 4D . The electrolysis device 4541 can further increase the amount of decomposition of the small amount of carbon dioxide remaining after dissolution of the electrolyte. For example, an electrolytic reduction method can be used for the electrolysis device 4541. That is, electrolyzer 4541 includes cathode electrode 4542 and anode electrode 4543 connected to power source 4541a, gas supply cell 4545, gas exhaust cell 4546, two electrolyte solution supply cells 4547, and electrolyte membrane 4544. The two electrolyte solution supply cells 4547 are arranged to sandwich electrolyte membrane 4544. The electrolyte solution supply cell 4547 and gas exhaust cell 4546 are arranged to sandwich anode electrode 4543. The electrolyte solution supply cell 4547 and gas supply cell 4545 are arranged to sandwich cathode electrode 4542. Electrolyte membrane 4544 has the ability to mainly transmit ions and is, for example, a solid polymer electrolyte membrane, which can be an anion exchange membrane. Anode electrode 4543 includes catalyst layer 4543a made of iridium oxide. Cathode electrode 4542 includes catalyst layer 4542a made of copper nanoparticles. The gas supply cell 4545 and the gas exhaust cell 4546 are provided with grooves for gas flow, and the two electrolyte supply cells 4547 are each provided with grooves for electrolyte flow. Carbon dioxide pipe 456 is connected to gas supply cell 4545, and carbon dioxide is supplied to cathode electrode 4542 through a groove inside gas supply cell 4545. In other words, the longer the groove, the more carbon dioxide comes into contact with the electrode, and therefore more carbon dioxide can be decomposed. Therefore, it is preferable that the groove has a serpentine structure. Electrolyte supply cell 4547 is connected to electrolyte supply pipe 4547a and electrolyte discharge pipe 4547b, the former supplying the electrolyte to electrolyte supply cell 4547 and the latter discharging the electrolyte from electrolyte supply cell 4547. The electrolyte is supplied to anode electrode 4543 and cathode electrode 45422 from a groove inside electrolyte supply cell 4547. Various electrolytes can be used, for example, an aqueous potassium bicarbonate solution. A voltage is applied from power supply 4541a to anode electrode 4543 as the positive electrode and cathode electrode 4542a as the negative electrode. Carbon dioxide supplied from electrolyte supply pipe 4547a is decomposed by catalyst layer 4543a of anode electrode 4543, and reacts with hydrogen produced by electrolysis of the electrolyte to become reduced substances such as methanol, ethanol, propanol, methane, and ethylene. Carbon monoxide is also produced during the decomposition process in the catalyst layer. These decomposed gases, which contain almost no carbon dioxide, are discharged from degassing pipe 458. In addition to hydrogen, oxygen is also produced by electrolysis of the electrolyte, and this oxygen is discharged from the gas discharge cell 4546 through the oxygen pipe 5659. When 1 gram of carbon dioxide is supplied to the electrolyzer 4541 from the carbon dioxide pipe 456, at least 0.5 grams (approximately 50 percent by weight) of the carbon dioxide can be decomposed into alcohol, etc. The electrolyzer 4541 makes it possible to further completely decompose the trace amounts of carbon dioxide remaining in the carbon dioxide flowing into the carbon dioxide treatment device 454.

[0055] As a further development of the carbon dioxide removal system 400A of the first embodiment, a feedback pipe 459 can be provided. As shown in FIG. 4E, the gas that passes through the carbon dioxide treatment device 454 and is discharged from the degassing pipe 458 may contain a small amount of residual carbon dioxide that has not been completely decomposed. For this reason, a feedback pipe 459 can be further provided. The feedback pipe 459 is a pipe that returns the degassing pipe 458 that passes through the carbon dioxide treatment device 454 to the intake port of the compressor 452. With the feedback pipe 459, any trace amount of carbon dioxide that may still remain among the carbon dioxide that has been discharged and removed from the rear chamber 451b of the separator 451 to the pipe 458 by the degassing pump 453 can be completely removed by passing the carbon dioxide through the compressor 452, the front chamber 451a of the separator 451, the separating material 451c of the separator 451, the rear chamber 451b, and the carbon dioxide treatment device 454 two or more times.

[0056] Next, a carbon dioxide removal system 400B of the second embodiment will be described with reference to Figure 5. The device configuration of the carbon dioxide removal device 450 of the second embodiment is almost the same as that of the first embodiment. The carbon dioxide removal device 450 includes a separation device 451, a compressor 452, a degassing pump 453, and a carbon dioxide treatment device 454. The piping configuration is also the same as that of the first and second embodiments. Here, the carbon dioxide removal system 400B of the second embodiment will be described with reference to the parts that differ from the first embodiment.

[0057] In the carbon dioxide removal system 400B of the second aspect, the drive source DS is used in the carbon dioxide removal system 400A of the first aspect, but instead of the drive source DS, an air flow generation device 100B of the second aspect of Embodiment 1 is applied. The air conduits 130 of the two air flow generation devices 100B are connected to low-pressure chambers 150, respectively. A rotor 160 is provided inside each low-pressure chamber 150, and the rotor 160 is rotated by the secondary flow, which is the air flow inside the air conduit 130. The rotor 160 is rotatably connected to a rotating shaft 452a of a compressor 452 and a rotating shaft 453a of a degassing pump 453, and rotates the rotating shaft 452a of the compressor 452 and the rotating shaft 453a of the degassing pump 453. Various methods can be used to rotate the rotary shaft 452a and the rotary shaft 453a of the degassing pump 453, such as by arranging a rotor, as long as the rotary shaft 452a of the compressor 452 and the rotary shaft 453a of the degassing pump 453 are rotated by a secondary flow. For example, the system may be configured equivalent to the air flow generating device 100C without arranging the low-pressure chamber 150 and the rotor 160. In this case, the secondary flow in the air conduit 130 rotates the rotary shaft 452a of the compressor 452 and the rotary shaft 453a of the degassing pump 453, thereby operating the compressor 452 and the degassing pump 453, just like the carbon dioxide removal system 400A of the first embodiment and the carbon dioxide removal system 400B of the third embodiment. [Example]

[0058] Next, examples of each of the first to fourth embodiments explained so far will be described below. For convenience, the first to fourth embodiments will be designated by the symbols A to D, respectively, and the numbers of the examples in A to D will be written alongside each other. For example, example 1 of the first embodiment will be designated as example A1, and example 2 of the fourth embodiment will be designated as example D2. Each example is a partial example of each of the embodiments, and all matters explained in the first to fourth embodiments will be applied as they are, even if they are not explained in each example.

[0059] [Example A1 (First Example of Embodiment 1)] Referring to FIGS. 2A and 6, an airflow generating device 100A, which is a low-pressure source generating device according to Example 1 of the first embodiment of the present invention, will be described. In Example 1 of the first embodiment, the airflow generating device 100A is fixed to the ground or a building and operates using an airflow, such as wind, taken in through the air intake 103a of the airflow generating device 100A. Referring to FIG. 6, another example is an airflow generating device 100A fixed to a moving body and operates using a relative airflow generated by the movement of the moving body. FIG. 6 is a conceptual diagram of this example of the airflow generating device 100A according to the present invention. The airflow generating device 100A is applied to a moving body 1, which is a moving vehicle. The moving body 1 is a vehicle that moves at high speed, and typical examples include automobiles such as private cars or transport trucks, aircraft such as passenger planes, and railway vehicles such as bullet trains and conventional trains. Here, an automobile 81, such as a transport truck, will be used as an example of the moving body 1. The airflow generating device 100A is disposed inside or outside the automobile 81. FIG. 6 shows an example in which the airflow generating device 100A is applied to the outside of the automobile 81, for example, in an air deflector. The air intake 103a of the airflow generating device 100A is disposed so as to be exposed to the outside of the moving body 1. When the automobile 81 moves, a relative airflow is generated, causing the multiple blades 101 and the rotating shaft 102 to rotate, and the rotating shaft 102 transmits a rotational force. This rotational force drives a wake-arranged device such as a compressor 452 or a degassing pump 453. An example in which the airflow generating device is applied to a wake-arranged device will be described later.

[0060] [Example A2 (Second Example of Embodiment 1)] With reference to Figures 7A to 8B, an airflow generating device 100B, which is a low-pressure source generating device according to a second embodiment of the present invention, will be described. Figure 7A is a perspective view of a basic configuration of the airflow generating device 100B according to embodiment A2 of the present invention. Figure 7B is a cross-sectional view of the airflow generating device 100B according to embodiment A2 of the present invention, focusing on the moving body 1 and the main duct 110. Figure 7C is a perspective view of a basic configuration of the airflow generating device 100B according to embodiment A2 of the present invention, which is modified from the basic configuration of the airflow generating device 100B according to embodiment A2 of the present invention. Figure 7D is a system diagram of the airflow generating device 100B according to embodiment A2 of the present invention. Figure 7E is a diagram showing an example of use of the airflow generating device 100B according to embodiment A2 of the present invention. Figure 8A shows an aircraft 82 to which the airflow generating device 100B according to the present invention is applied. Figure 8B shows a railway vehicle 83 to which the airflow generating device 100B according to the present invention is applied.

[0061] The air flow generating device 100B of Example A2 is also applied to a moving body 1, similar to the air flow generating device 100A of Example A1. The moving body 1 to which the air flow generating device 100B of Example A2 is applied is also a vehicle that moves particularly at high speed, and is particularly effective in aircraft such as passenger planes and railway vehicles such as bullet trains and conventional trains. The air flow generating device 100B is disposed inside the moving body. That is, the air flow generating device 100B is disposed inside a structural wall surface 10 of the moving body 1. An air intake 10a and an air exhaust 10b are disposed on the structural wall surface 10.

[0062] The air intake 10a is an opening that takes in air (first atmosphere) from outside the moving body 1 into the air flow generating device 100B, and the air outlet 10b is an opening that discharges the first atmosphere that has been taken in from the air intake 10a and passed through the air flow generating device 100B to the outside of the moving body. For example, in the case of the aircraft 82 in Fig. 8, the air intake 10a is arranged at the front of the lower part of the side of the aircraft 82, and the air outlet 10b is arranged at the rear of the lower part of the side of the aircraft 82.

[0063] As examples of the mobile body 1 to which the air flow generating device 100B of embodiment A2 is particularly effective, an aircraft 82 and a railway vehicle 83 are shown. In the case of the railway vehicle 83 shown in Fig. 8, an air intake 10a is arranged at the front lower part of the side of each car of the railway vehicle 83, and an air exhaust port 10b is arranged at the bottom rear part of each car. In either case, the front of the mobile body 1 is the upstream side where the air intake port 10a is arranged, and the rear of the mobile body 1 is the downstream side where the air exhaust port 10b is arranged. The application of the air flow generating device 100B is not limited to aircraft 82 and railway vehicles 83, but can be applied to all mobile bodies 1.

[0064] The airflow generation device 100B of the present invention comprises a main duct 110, an induction hole 110c, and an air conduit 130. The main duct 110 has a first opening 110a and a second opening 110b at both ends. The induction hole 110c is disposed in the wall surface of the main duct 110.

[0065] The first opening 110a communicates with the air intake 10a, and the second opening 110b 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 pipe 110, from when the first atmosphere is taken in through the air intake 10a to when it is discharged through the second opening 110b.

[0066] The main duct 110 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 110a is also arranged forward in the traveling direction of the moving body so as not to resist 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 110b 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.

[0067] For example, as shown in FIG. 7B , the main conduit 110 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 110 may be a hollow tubular conduit extending along the moving body's direction of travel. The main conduit 110 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. 7B , the main conduit 110 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 110 so as to form the main conduit 110 between the plate and the structural wall surface 10.

[0068] An induction hole 110c is drilled in the wall surface of the main conduit 110. The induction hole 110c can be, for example, a slit-shaped elongated hole extending perpendicular to the direction in which the main conduit 110 extends. The size of the cross section of the main conduit 110 can be constant from the first opening 110a to the second opening 110b, but as shown in Figures 6A and 6B, the cross section of the main conduit 110 may be large at the first opening 110a and the second opening 110b and may narrow near the induction hole 110c.

[0069] If the cross-sectional size of the main conduit 110 is constant from the first opening 110a to the second opening 110b, the speed of the primary flow P inside the main conduit 110 will be approximately constant, whereas if the cross-sectional size of the main conduit 110 narrows near the induction hole 110c, the speed of the primary flow P will accelerate near the induction hole 110c. Furthermore, the shape of the wall surface of the main conduit 110 may be made variable, and a control device may be provided to control the wall surface of the main conduit 110, and the ratio of the cross-sectional area of ​​the induction hole 110c to the area of ​​the first opening 110a may be made variable, thereby controlling the static pressure near the induction hole 110c.

[0070] The air conduit 130 is disposed inside a movable body under a second atmosphere different from the first atmosphere. Here, "different" means that the first atmosphere is the air outside the movable body and the second atmosphere is the atmosphere inside the movable body, while both are air. 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 130 includes a flow path inlet 130a and a flow path outlet 130b. In one embodiment, as shown in FIG. 6A, the flow path inlet 130a can be exposed to the interior of the movable body. In this case, the flow path inlet 130a 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 130 through the flow path inlet 130a. The air is taken into the air conduit 130 through the flow path inlet 130a and flows out through the flow path outlet 130b of the air conduit 130 to the induction hole 110c.

[0071] In the basic configuration of the first embodiment, the flow path inlet 130a of the air conduit 130 is exposed. However, as a modified configuration of the first embodiment, as shown in FIG. 7C , a low-pressure chamber 150 having an opening 150a serving as a second atmosphere intake port exposed to the second atmosphere inside the movable body can be arranged, and the flow path inlet 130a can be connected to the interior of the movable body via the interior of the low-pressure chamber 150. In this configuration, the low-pressure chamber 150 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 130 from the opening 150a of the low-pressure chamber 150 through the low-pressure chamber 150. The secondary flow Q is taken into the air conduit 130 from the opening 150a through the low-pressure chamber 150 and flows out through the flow path outlet 130b of the air conduit 130 to the induction hole 110c. The following description will be given in the form in which a low-pressure chamber 150 is arranged (Figure 7C), but the same applies to an example in which a low-pressure chamber 150 is not arranged and the flow path inlet 130a is exposed to the inside of the moving body and functions as a low-pressure source.

[0072] Because the flow velocity of the second atmosphere in the air conduit 130 is lower than that of the primary flow P of the first atmosphere in the main conduit 110, the static pressure of the first atmosphere near the induction hole 110c of the main conduit 110 is lower than that of the second atmosphere in the air conduit 130. Therefore, at the flow path outlet 130b of the air conduit 130, the second atmosphere is drawn into the main conduit 110 through the induction hole 110c of the main conduit 110. As a result, the pressure of the second atmosphere near the flow path outlet 130b of the air conduit 130 becomes lower than that at the flow path inlet 130a. To compensate for this, a secondary flow Q of the second atmosphere may be generated through the air conduit 130 from the flow path inlet 130a to the flow path outlet 130b. As a result, a secondary flow Q of the second atmosphere is generated from the inside of the low-pressure chamber 150 via the flow path inlet 130a, and the internal pressure of the low-pressure chamber 150 decreases. Since low pressure chamber 150 has opening 150a, secondary flow Q of the second atmosphere around low pressure chamber 150 is generated, which has the effect of generating a flow toward low pressure chamber 150, which serves as a low pressure source in the environment in which low pressure chamber 150 is installed. For example, secondary flow Q is generated in the room of movable body 80 even if there is no opening such as a window.

[0073] 7E is a cross-sectional view of a pressurized section inside an aircraft 82, which is a passenger plane. As shown in FIG. 7E, by arranging a low-pressure chamber 150, the air inside the aircraft 82, which is the second atmosphere, flows toward the low-pressure chamber 150. For example, by providing a plurality of low-pressure chambers 150 (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 130a, a secondary flow Q can be induced toward each of the openings 150a (1501a, 1502a, 1503a, 1504a, 1505a, 1506a). Naturally, the low pressure chambers 150 (1501, 1502, 1503, 1504, 1505, 1506) may not be provided, and the flow path inlet 130a may be exposed.

[0074] For example, various purposes can be achieved by generating an air flow toward the low pressure chamber 150 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 150 can be used for various purposes.

[0075] Furthermore, as described above, when the cross-sectional size of the main conduit 110 in the vicinity of the induction hole 110c of the main conduit 110 is narrowed to be smaller than the first opening 110a and the second opening 110b, the Venturi effect further reduces the pressure of the first atmosphere in the vicinity of the induction hole 110c of the main conduit 110. This makes it possible to further increase the secondary flow Q of the second atmosphere via the air conduit 130 from the flow path inlet 130a to the flow path outlet 130b.

[0076] When the airflow generating device 100B is applied to a moving body, the air conduit 130, the flow path inlet 130a, and the flow path outlet 130b are arranged inside the moving body. The second atmosphere is the atmosphere inside the moving body. If the flow path inlet 130a 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 110c and discharged to the outside of the moving body. Specifically, in the case of an aircraft 82, 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.

[0077] Valves 140a, 140b, and 140c can be provided at the first opening 110a, the second opening 110b, and the induction hole 110c, 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 140a, 140b, and 140c, it is possible to control the flow rate of the secondary flow Q of the second atmosphere passing through the air conduit 130 from the flow path inlet 130a to the flow path outlet 130b. Furthermore, valves (not shown) can also be provided at the flow path inlet 130a and the flow path outlet 130b as needed.

[0078] Furthermore, by arranging doors serving as valves at the openings, air inlet 10a and air outlet 10b, and controlling the opening area of ​​the doors, the flow of the first atmosphere itself can be controlled, and the secondary flow Q of the second atmosphere can be controlled through the 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 140a, 140b, and 140c, thereby controlling the flow rate of the first atmosphere and the flow rate of the second atmosphere inside main conduit 110. Similarly, when valves (not shown) are arranged at flow path inlet 130a and flow path outlet 130b, 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.

[0079] The airflow generating device 100B can directly generate an airflow inside a moving object without requiring any mechanical moving parts or electrical power. The airflow generated by the airflow generating device 100B can generate a low-pressure source at the flow path inlet 130a, so the airflow generating device 100B also functions as a low-pressure source generating device. By utilizing the airflow generated by the airflow generating device 100B of the first embodiment and the low-pressure source generated thereby, the airflow generating device 100B can be applied to devices that achieve various purposes.

[0080] [Example A3 (Third Example of Embodiment 1)] 2A and 9, an airflow generator 100C of Example A3, which is a third example of the first embodiment of the present invention, will be described. The airflow generator 100C is an example in which the airflow generator 100A of Example A1 is applied to the airflow generator 100B of Example A2. As shown in FIG. 9, the airflow generator 100A of Example A1 is arranged so as to be joined to the flow path inlet 130a of the air conduit 130 of the airflow generator 100B of Example A2. Since the secondary flow Q at the flow path inlet 130a of the air conduit 130 of the airflow generator 100B is an air suction flow, the outlet 103b of the airflow generator 100A of Example A1 is joined to the flow path inlet 130a of the air conduit 130. When a secondary flow Q is generated by the primary flow P in the airflow generating device 100B, the secondary flow Q rotates the blades 101 and the rotating shaft 102, and the rotating shaft 102 transmits a rotational force. The rotational force drives a wake-arranged device such as a compressor 452 or a degassing pump 453. An example of application to a wake-arranged device will be described later.

[0081] Example B1 (First Example of Second Embodiment) Next, with reference to FIGS. 10A and 10B, a filter system 200 using an air flow generating device 100B will be described as Example B1, which is a first example of the second embodiment. The filter system 200 is compatible with the air flow generating device 100B of Example A2. FIG. 9A is a perspective view of the filter system 2 of Example B1 of the present invention. FIG. 9B shows a system diagram of the filter system 200. Example A2 differs from Example B1 in that a filter device 250 is used as the low-pressure chamber 150 of Example A2. The filter device 250 includes a filter medium 251. Only the differences from Example B1 will be described here. Furthermore, although not shown, the filter system 200 may be formed by directly arranging the filter medium 251 at the flow path inlet 130a of the air conduit 130 without the filter device 250.

[0082] The filter system 200 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.

[0083] A filter medium 251 is disposed inside the filter device 250, which serves as a low-pressure chamber. The filter medium 251 has the property of allowing the second atmosphere to pass through but not allowing 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 filter device 250, which serves as a low-pressure chamber, from the opening 250a and passes through the filter medium 251. The components to be captured are captured by the filter media 251, and the secondary flow Q from which the components to be captured have been removed flows from the filter device 250, which serves as a low-pressure chamber, to the air conduit 130 via the flow path inlet 130a. As described above, the second atmosphere is the air inside the vehicle, such as the air inside a room inside the vehicle, such as a 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.

[0084] The filter media 251 can be made from a porous material suitable for the object to be captured. For air purification, a wide variety of porous materials with numerous micropores, such as HEPA filters, activated carbon, and nonwoven fabrics, can be used. For carbon dioxide removal, the filter media 251 can be made from a carbon dioxide adsorbing porous material with numerous micropores, such as silica, calcium, or magnesium. This allows the filter system 200 to remove impurities from the air serving as the second atmosphere according to the characteristics of the filter media 251, thereby purifying the air inside the mobile body. The purified air serving as the second atmosphere flows from the air conduit 130 through the flow path inlet 130a and the induction hole 110c into the main conduit 110, where it is exhausted from the second opening 110b of the main conduit 110.

[0085] [Example C1 (First Example of Embodiment 3)] Next, with reference to FIGS. 11A and 11B, a power generation system 300 using the air flow generating device 100B of Example A2 will be described as Example C1, which is a first example of the third embodiment of the present invention. FIG. 11A is a perspective view of the power generation system 300 to which the air flow generating device 100B is applied. FIG. 11B shows a system diagram of the power generation system 300. The difference from the air flow generating device 100B of Example A2 is that the air flow generating device 100B is provided with a rotor 160 and a generator 170 in the low-pressure chamber 150. The air flow generating device 100B is the same as that described in Example A2, and only the differences from Example A2 will be described here. As described above, Example A2 may have a configuration in which the filter device 250 serving as the low-pressure chamber is not provided, but the rotor 160 is provided at the flow path inlet 130a of the air conduit 130, and the generator is rotated by the rotary shaft 160a of the rotor 160 to generate power. Furthermore, when the airflow generation device 100B is made to function as the power generation system 3, in a configuration in which a low-pressure chamber of the filter device 250 is disposed, which is a modified configuration of the basic configuration of the first embodiment, a rotor may be disposed inside the low-pressure chamber of the filter device 250. This will be described later.

[0086] The rotor 160 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 130a to the flow path outlet 130b, and can rotate around the rotary shaft 160a due to the secondary flow Q of the second atmosphere. The rotor 160 may be a rotor having a blade row in which the direction of the secondary flow Q is the same as the direction in which the rotary shaft 160a extends, or a rotor having a blade row in which the direction of the secondary flow Q is perpendicular to the direction in which the rotary shaft 160a extends. The rotor 160 can be a blade having a blade row of various shapes as long as it can rotate around the rotary shaft 160a due to the secondary flow Q. FIGS. 11A and 11B show an example of a rotor having a blade row in which the direction is perpendicular to the direction in which the rotary shaft 160a extends.

[0087] The generator 170 is not particularly limited as long as it generates electricity through rotation, and is typically a generator including a stator 170a and a rotor 170b. One of the stator 170a and the rotor 170b includes a magnet, and the other of the stator 170a and the rotor 170b includes a coil. The rotating shaft 160a is joined to the rotor 170b of the generator 170.

[0088] When the airflow generating device 100B generates a secondary flow Q in the second atmosphere, the secondary flow Q rotates the rotor 160, which in turn rotates the rotating shaft 160a. When the rotating shaft 160a rotates, the rotor 170b rotates, causing the coil to rotate within the magnetic field, and the generator 170 generates electricity by generating induction machine power in the coil and outputting it to the output line 170c. For example, when the primary flow P in the first atmosphere in the main duct 110 is 900 km / h, the secondary flow Q in the second atmosphere in the air duct 130 is 100 km / h. At this time, the rotation speed of the rotating shaft 160a becomes 1250 rpm, and an output of 0.06 kW is obtained from the generator.

[0089] The power output by the generator 170 of the power generation system 300 can be used for various purposes. For example, it can be used to operate various devices of a mobile object. By generating power using the airflow generation device 100B without using the power required for operating or running the mobile object, the power can be applied to various devices of the mobile object.

[0090] Example C2 (Second Example of Third Embodiment) Next, referring to Figs. 11C and 11D, a power generation system 300 using the air flow generator 100A of Example A1 or the air flow generator 100C of Example A3 will be described as Example C2, a second example of the third embodiment of the present invention. The power generation system 300 differs from Example C1 in that the air flow generator 100A or the air flow generator 100C is used instead of the air flow generator 100B. Because the air flow generators 100A and 100C have the same configuration, an example in which the air flow generator 100A is applied will be described here. Fig. 11C is a perspective view of the power generation system 300 to which the air flow generator 100A is applied. Fig. 11D shows a system diagram of the power generation system 300.

[0091] The configuration of the generator 170 is the same as in Example C1. The rotating shaft 102 of the airflow generating device 100A is joined to a rotating shaft 160a which is joined to a rotor 170b of the generator 170. When the moving body 1 travels, a relative airflow occurs, causing the plurality of blades 101 and the rotating shaft 102 to rotate, and the rotating shaft 102 transmits a rotational force to the rotating shaft 160a. The rotational force rotates the rotor 170b of the generator 170, causing the generator 170 to generate electricity.

[0092] [Example D1 (First Example of Embodiment 4)] Next, with reference to FIGS. 12A and 12B, a carbon dioxide removal system 400B of a second aspect using the air flow generation device 100B of Example A2 will be described as Example D1, which is a first example of Embodiment 3. FIGS. 12A and 12B respectively show a conceptual perspective view and a system diagram of the carbon dioxide removal system 400 as Example D1. The carbon dioxide removal system 400 includes an air flow generation device 100B and a carbon dioxide removal device 450. In Example D1, the carbon dioxide removal device 450 includes a degassing pump 453, a separation device 451, and a carbon dioxide treatment device 454. While Embodiment 4 includes at least one of a compressor 452 and a degassing pump 453, Example D1 is an example that includes only the degassing pump 453. The carbon dioxide removal device 450 includes a rotor 160, a degassing pump 453, a separation device 18, and a carbon dioxide treatment device 454.

[0093] In Example D1, a rotor 160 rotating around a rotary shaft 160a is provided in the flow of secondary flow Q to air conduit 130 in low pressure chamber 150. Air flow generating device 100B is the same as in Embodiment 1. Flow path inlet 130a of air conduit 130 may be exposed to the inside of the moving body, or flow path inlet 130a of air conduit 130 may be directly connected to low pressure chamber 150, and opening 150a of low pressure chamber 150 may be exposed to the inside of the moving body.

[0094] The rotor 160 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 130a to the flow path outlet 130b, and can rotate around the rotary shaft 160a due to the secondary flow Q of the second atmosphere. The rotor 160 may be a rotor having a blade row in which the direction of the secondary flow Q is the same as the direction in which the rotary shaft 160a extends, or a rotor having a blade row in which the direction of the secondary flow Q is perpendicular to the direction in which the rotary shaft 160a extends. The rotor 160 can be a blade having a blade row of various shapes as long as it can rotate around the rotary shaft 160a due to the secondary flow Q. FIGS. 12A and 12B show an example of a rotor having a blade row in which the direction is perpendicular to the direction in which the rotary shaft 160a extends.

[0095] The degassing pump 453 includes an exhaust port 453OUT and an intake port 453IN located in the second atmosphere. The degassing pump 453 is a degassing pump typified by a vacuum pump. For the sake of explanation, the degassing pump 453 will be described below using a pump employing a rotary impeller. However, the degassing pump 453 does not require a rotary impeller as long as it can suck in gas from the intake port 453IN to the exhaust port 453OUT. As explained in the embodiment, a rotary or scroll pump that uses rotation to discharge gas while retaining it in a predetermined volume may also be used. The rotating shaft 160a of the rotor 160 is coupled to an impeller inside the degassing pump 453 so that rotation is transmitted to the impeller. The degassing pump 453 is driven by the rotational force of the rotor 160 to discharge gas in the second atmosphere sucked in through the intake port 452IN from the exhaust port 452OUT. The degassing pump 453 can typically be a rotary pump that can directly use the rotation around the rotating shaft 160a, but the degassing pump 453 can also be a positive displacement reciprocating pump that reciprocates a piston using a mechanism such as a crank.

[0096] The separation device 451 has a separation material 451c disposed therein and is a chamber divided by the separation material 451c into two chambers: a front chamber 451a and a rear chamber 451b. The front chamber 451a has an opening in part so that it is exposed to and communicates with the second atmosphere, and the rear chamber 451b communicates with an intake port 453IN of the degassing pump 453. The rear chamber 451b is connected to the intake port 453IN of the degassing pump 453 so that gas of the second atmosphere that has permeated the separation material 451c from the front chamber 451a is introduced into the intake port 453IN of the degassing pump 453. The separation material 451c is a membrane that selectively allows carbon dioxide to permeate. The separation material 451c is, for example, a polymer-based material membrane, i.e., a nanoporous film having numerous nanopores that selectively allows carbon dioxide molecules to permeate but does not allow nitrogen and oxygen to permeate. Separation material 451c is, for example, a polymer film with numerous nanopores that are larger than the average size of a carbon dioxide molecule (0.33 nanometers) and smaller than the average size of a nitrogen molecule in air (0.36 nanometers). Furthermore, by making the film thin, particularly 250 nanometers or less, it is possible to selectively allow carbon dioxide to permeate.

[0097] Front chamber 451a 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 airplane, is used. Meanwhile, the pressure in rear chamber 451b is degassed by degassing pump 453. The pressure difference between front chamber 451a and rear chamber 451b causes carbon dioxide in the second atmosphere generated inside the moving body to pass through separation material 451c. This allows carbon dioxide to selectively pass through separation material 451c and be collected in rear chamber 451b by so-called membrane separation. Meanwhile, other components of air, such as nitrogen, cannot pass through front chamber 451a through separation material 451c, and remain in front chamber 451a or return to the inside of the moving body.

[0098] The gas of the second atmosphere that has passed through the separation material 451c is introduced into the degassing pump 453 from the intake port 453IN via the rear chamber 451b. Most of the gas of the second atmosphere that has passed through the separation material 451c is carbon dioxide, but since small amounts of nitrogen and oxygen, which are components of air, also permeate the separation material 451c, the gas of the second atmosphere that has passed through the separation material 451c also contains small amounts of nitrogen and oxygen. The degassing pump 453 uses the rotational force transmitted from the rotor 160 to discharge the gas of the second atmosphere that contains carbon dioxide that has been sucked in from the intake port 453IN through the exhaust port 453OUT.

[0099] The carbon dioxide removal system 400 includes a carbon dioxide treatment device 454 having a liquid electrolyte 454a therein that dissolves carbon dioxide. Examples of the liquid electrolyte 454a that dissolves carbon dioxide include water and an ionic liquid. The liquid electrolyte 454a may be any liquid that has high solubility in carbon dioxide. An end of the exhaust port 452OUT of the degassing pump 453 is located in the liquid electrolyte 454a inside the carbon dioxide treatment device 454. Alternatively, an inlet pipe having one end communicating with the exhaust port 452OUT of the degassing pump 453 and the other end located in the liquid of the carbon dioxide treatment device 454 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 exhaust port 453OUT or may be formed as a separate component connected to the exhaust port 453OUT. The gas of the second atmosphere containing carbon dioxide introduced into the carbon dioxide treatment device 454 from the exhaust port 453OUT passes through the liquid electrolyte 454a, and the carbon dioxide in the gas of the second atmosphere is dissolved in the liquid electrolyte 454a by so-called solution separation.

[0100] The gas that has passed through liquid electrolyte 454a of carbon dioxide treatment device 454 is returned to the inside of the movable body. As a method for returning the gas that has passed through liquid electrolyte 454a to the inside of the movable body, for example, a collector 454b that collects the air that has passed through liquid electrolyte 454a from the top of carbon dioxide treatment device 454 is disposed above carbon dioxide treatment device 454. The air collected by collector 454b is returned to the inside of the movable body from exhaust pipe 454c using a circulation device (not shown), and returns to the second atmosphere as fresh gas from which carbon dioxide has been removed.

[0101] This allows the degassing pump 453 to be driven by the airflow generating device 100B without supplying power to the degassing pump 453.

[0102] As described above, in the carbon dioxide removal system 400 of Example D1, the rotating shaft 160a of the rotor 160 is coupled to the impeller of the degassing pump 453 so that rotational force is transmitted to the impeller. However, as a modification of Example D1, it is also possible to provide a carbon dioxide removal system (not shown) in a form that includes the power generation system 300 of Embodiment 3 in which the rotating shaft 160a of the rotor 160 is coupled to the generator 170 rather than being coupled to the impeller of the degassing pump 453 so that rotational force is transmitted to the impeller, and in which the degassing pump 453 is operated so that the impeller of the degassing pump 453 is driven by the electric power generated by the generator 170 of the power generation system 300. Example D1 is one of the examples of Embodiment 4, and all of the matters described in Embodiment 4 are also applicable to Example D1.

[0103] [Example D2 (Second Example of Embodiment 4)] Next, with reference to Figures 12C and 12D, a carbon dioxide removal system 400 using the air flow generator 100A of Example A1 or the air flow generator 100C of Example A3 will be described as Example D2, which is a second example of the fourth embodiment of the present invention. The difference from the carbon dioxide removal system 400 of Example D1 is that the air flow generator 100A or the air flow generator 100C is used instead of the air flow generator 100B. Since the air flow generators 100A and 100C have the same configuration, an example in which the air flow generator 100A is applied will be described here. Figure 12C is a perspective view of the carbon dioxide removal system 400 using the air flow generator 100A. Also, Figure 11D shows a system diagram of the carbon dioxide removal system 400.

[0104] The configuration of the carbon dioxide removal device 450 of the carbon dioxide removal system 400 is the same as in Example D1. The rotating shaft 102 of the air flow generation device 100A is joined to the rotating shaft 160a of the degassing pump 453 of the carbon dioxide removal device 450. When the moving body 1 travels, a relative air flow is generated, causing the multiple blades 101 and the rotating shaft 102 to rotate, and the rotating shaft 102 transmits a rotational force to the rotating shaft 160a. This rotational force rotates the degassing pump 453 of the carbon dioxide removal device 450, thereby degassing the rear chamber 451b. Other points are the same as in Example D1. Example D2 is one of the examples of embodiment 4, and all of the matters described in embodiment 4 are also applicable to Example D2.

[0105] [Example D3 (Third Example of Embodiment 4)] Next, with reference to Figures 13A and 13B, a carbon dioxide removal system 400 using the air flow generation device 100B will be described as Example D3, which is a third example of Embodiment 4. Figures 13A and 13B show a conceptual perspective view and a system diagram, respectively, of the carbon dioxide removal system 400 of the third example D3. The carbon dioxide removal system 400 includes the air flow generation device 100B, a rotor 160, a compressor 452, a degassing pump 453, a separator 451, and a carbon dioxide treatment device 454. In Example D2, front chamber 451a and rear chamber 451b are separated by separation material 451c, and rear chamber 451b is degassed by degassing pump 453 so that carbon dioxide selectively passes through separation material 451c. However, Example D1 differs in that separation tube 451d is disposed inside separator 451, the inside of separator 451 is degassed by degassing pump 453, and then compressor 452 pressurizes separation tube 451d to pass a second atmosphere through it, thereby selectively separating carbon dioxide from separation tube 451d. Here, as Example D3, differences from Example D1 will be described, and the same parts will be explained only as supplementary explanations. Separation tube 451d is obtained by forming separation material 451c of separator 451 into a tubular shape, and the details of separation tube 451d are the same as those of separator 451. Carbon dioxide removal system 400 is provided with both compressor 452 and degassing pump 453, and by pressurizing front chamber 451a with compressor 452 and depressurizing rear chamber 451b with degassing pump 453, a large pressure difference can be achieved between front chamber 451a and rear chamber 451b, thereby realizing a small carbon dioxide removal device.

[0106] Compressor 452 includes an intake port 452IN for introducing the second atmosphere into compressor 452, and an exhaust port 452OUT for discharging the second atmosphere compressed by compressor 452. Separator 451 also includes a separation pipe 451d therein, which communicates with exhaust port 452OUT and includes an exhaust port 451da for discharging the second atmosphere from separator 451.

[0107] In Example D3, the air flow generating device 100B is used as the driving force for driving the compressor 452. Therefore, Example D3 includes two air flow generating devices 100B: a first air flow generating device 100Ba and a second air flow generating device 100Bb. The first air flow generating device 100Ba drives the degassing pump 453, and the second air flow generating device 100Bb drives the compressor 452. The first air flow generating device 100Ba and the second air flow generating device 100Bb have the same structure and mechanism as the air flow generating device 100B described in Example A1.

[0108] The first air flow generating device 100Ba 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 can rotate around a rotary shaft 161 a by the air flow of the second atmosphere in the first air conduit 131 .

[0109] On the other hand, the second air flow generation device 100Bb 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 rotary shaft 162a by the air flow of the second atmosphere in the second air conduit 132.

[0110] 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.

[0111] 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.

[0112] The degassing pump 453 is the same as in Example D1 and includes an inlet 453IN and an outlet 453OUT. For the sake of explanation, the following describes the compressor 452 and degassing pump 453 as compressors and pumps using rotary vanes. However, the compressor 452 does not require rotary vanes as long as it can draw gas from the inlet 452IN to the outlet 452OUT, and the degassing pump 453 does not require rotary vanes as long as it can draw gas from the inlet 452IN to the outlet 452OUT. As explained in the embodiment, rotary or scroll compressors and pumps that use rotation to discharge gas while confining it to a predetermined volume may also be used. The rotating shaft 161a of the first rotary vane 161 is coupled to an impeller inside the degassing pump 453 so that rotation is transmitted to the impeller. The rotational force of the first rotary vane 161 is transmitted to drive the degassing pump 453 to draw in the second atmosphere through the inlet 452IN and discharge it through the outlet 452OUT of the degassing pump 453. The compressor 452, which is a characteristic configuration of the embodiment D3, includes an intake port 452IN and an exhaust port 452OUT. The rotary shaft 162a of the second rotary blade 162 is coupled to an impeller inside the compressor 452 so that rotation is transmitted to the impeller. The rotary force of the second rotary blade 162 is transmitted to the compressor 452, and the compressor 452 is driven to suck in the second atmosphere through the intake port 452IN of the compressor 452, compress it, and discharge it from the exhaust port 452OUT.

[0113] Separation device 451 includes separation tube 451d therein. Separation device 451 communicates with intake port 453IN of degassing pump 453, collects carbon dioxide permeated from separation tube 451d, and introduces it into intake port 453IN. Separation tube 451d has one end connected to exhaust port 452OUT of compressor 452 and the other end connected to the second atmosphere, and is a tube that selectively permeates carbon dioxide. Separation tube 451d is, for example, a tube formed by forming a thin film of a polymer material into a tubular shape. Separation tube 451d is also a separation tube formed by forming separation material 451c described in the embodiment into a tubular shape. The interior of separation tube 451d corresponds to front chamber 451a of separation device 451 described in the embodiment, and the interior of separation device 451 and the outside of separation tube 451d corresponds to rear chamber 451b of separation device 451. "Selective carbon dioxide permeation" means that carbon dioxide mainly permeates, and nitrogen does not mainly permeate, but only a small amount, if any. Separation tube 451d has a main gas flow along the direction in which separation tube 451d extends, and carbon dioxide permeates in the thickness direction of the polymeric material separation membrane that constitutes separation tube 451d, which is along the radial direction of separation tube 451d. Therefore, a longer separation tube 451d is more effective for allowing more carbon dioxide to permeate. For example, separation tube 451d can be formed into a spiral shape and housed inside separation device 451, allowing separation tube 451d to be housed inside separation device 451 in a small volume.

[0114] When the carbon dioxide-containing air flowing into separation tube 451d from exhaust port 452OUT is pressurized and flows, only nitrogen, which cannot pass through the polymer separation film layer, passes through separation tube 451d and is returned to the second atmosphere from exhaust port 451e. On the other hand, oxygen and carbon dioxide other than nitrogen pass through the polymer separation membrane and flow into separation tube 451d by permeating in the radial direction into separation device 451.

[0115] Similar to Example D1, carbon dioxide removal system 400 includes carbon dioxide treatment device 454, which contains liquid electrolyte 454a that dissolves carbon dioxide, and an inlet pipe having one end connected to exhaust port 453OUT of degassing pump 453 and the other end located in liquid electrolyte 454a of carbon dioxide treatment device 454, through which gas of a second atmosphere passes through the liquid. Gas passing through liquid electrolyte 454a in carbon dioxide treatment device 454 is returned to the interior of the moving body. That is, carbon dioxide introduced so as to permeate into separation device 451, along with small amounts of nitrogen and oxygen, are introduced into degassing pump 453 through intake port 453IN and discharged through exhaust port 453OUT, similar to Example 4. Then, carbon dioxide is introduced into carbon dioxide treatment device 454 and passes through liquid electrolyte 454a. Carbon dioxide dissolves in liquid electrolyte 454a by so-called solution separation, similar to Example 4. Details of carbon dioxide treatment device 454 have already been described.

[0116] Similar to Example D1, carbon dioxide removal system 400 can also be configured to further include a collector that collects gas that has passed through liquid electrolyte 454a from the top of carbon dioxide treatment device 454, 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 electrolyte 454a from liquid electrolyte 454a of carbon dioxide treatment device 454 is circulated back into the interior of the moving body.

[0117] In this way, the carbon dioxide removal system 400 can separate carbon dioxide without requiring any mechanical moving parts or electricity by utilizing the airflow generation device 100B.

[0118] As described above, in the carbon dioxide removal system 400 of Example D3, the rotating shaft 161a of the first rotor 161 is coupled to the impeller of the degassing pump 453 so as to transmit rotational force, and the rotating shaft 162a of the second rotor 162 is coupled to the impeller of the compressor 452 so as to transmit rotational force. However, as a modification of Example D3, it is also possible to provide a carbon dioxide removal system (not shown) in which the first rotor 161 and the second rotor 162 are not provided, the power generation system 300 of Example C1 is included, and the degassing pump 453 and the compressor 452 are operated so as to drive the impellers of the degassing pump 453 and the compressor 452 with electric power generated by the generator 170 of the power generation system 3. Example D3 is one of the examples of Embodiment 4, and all of the matters described in Embodiment 4 are also applicable to Example D3.

[0119] Example D4 (Fourth Example of the Fourth Embodiment) Next, with reference to Figures 13C and 13D, a carbon dioxide removal system 400 using the air flow generator 100A of Example A1 or the air flow generator 100C of Example A3 will be described as Example D4, a fourth example of the fourth embodiment of the present invention. The difference from the carbon dioxide removal system 400 of Example D3 is that the air flow generator 100A or the air flow generator 100C is used instead of the air flow generator 100B. Because the air flow generators 100A and 100C have the same configuration, an example in which the air flow generator 100A is applied will be described here. In Example D4, two air flow generators 100A are used as a representative example. Figure 13C is a perspective view of the carbon dioxide removal system 400 of Example D4 in which the air flow generator 100A is applied. Also, Figure 13D shows a system diagram of the carbon dioxide removal system 400 of Example D4.

[0120] The configuration of the carbon dioxide removal device 450 of the carbon dioxide removal system 400 is the same as in Example D3. The rotating shaft 102 of one air flow generating device 100A is joined to the rotating shaft 160a of the degassing pump 453 of the carbon dioxide removal device 450. The rotating shaft 102 of the other air flow generating device 100A is joined to the rotating shaft 160a of the compressor 452 of the carbon dioxide removal device 450. As the moving body 1 moves, a relative air flow is generated, causing the multiple blades 101 and rotating shaft 102 in each air flow generating device 100A to rotate, and the rotating shaft 102 transmits rotational force to the rotating shaft 160a. This rotational force rotates the compressor 452 of the carbon dioxide removal device 450, pressurizing the separation pipe 451d and degassing the inside of the chamber of the separation device 451 outside the separation pipe 451d. Other points are the same as in Example D1. Although separation tube 451d is described in Example D4, it is the same as separation device 451 described in carbon dioxide removal system 400A of the first aspect of Embodiment 4, and can have the same configuration as separation device 451.

[0121] Although the example using two air flow generating devices 100A has been described in Example D4, an embodiment using only one air flow generating device 100A is also possible. The rotating shaft 102 of one air flow generating device 100A is mechanically joined to the rotating shaft 160a of the compressor 452 of the carbon dioxide removing device 450 and the rotating shaft 160a of the degassing pump 453 of the carbon dioxide removing device 450. The mechanical joining can be achieved, for example, by using gears, chains, belts, etc. to connect the rotating shaft 102 to the rotating shaft 160a of the compressor 452 of the carbon dioxide removing device 450 and the rotating shaft 160a of the degassing pump 453 of the carbon dioxide removing device 450 so that the rotational force of the rotating shaft 102 can be transmitted to the rotating shafts 160a of the compressor 452 and the degassing pump 453. At least two of the rotating shaft 102 of the air flow generation device 100A, the rotating shaft 160a of the compressor 452 of the carbon dioxide removal device 450, and the rotating shaft 160a of the degassing pump 453 of the carbon dioxide removal device 450 may be coaxially coupled. A feedback pipe FD may also be provided.

[0122] A more specific implementation state of Example D4 will be described with reference to FIG. 14 . In Example D4, for example, the air flow generating device 100A is disposed outside a vehicle, and the carbon dioxide removing device 450 is disposed in a closed space such as a passenger cabin or cargo hold of the vehicle, thereby removing carbon dioxide from the closed space. Closed spaces such as the passenger cabin or cargo hold of a vehicle are spaces where carbon dioxide is likely to be generated from passenger breathing or refrigerated cargo such as dry ice. The vehicle may be a truck, a railroad car, or an airplane. For example, the air flow generating device 100A is disposed in the air deflector section of a truck, which is the vehicle 1 in FIG. 6, with its air intake 103a facing forward in the direction of travel of the vehicle 1. The carbon dioxide removing device 450 is then installed in the loading platform 81a. A compressor 452 and a degassing pump 453 are operated by the driving force of the air flow generating device 100A. When compressor 452 and degassing pump 453 operate, air containing carbon dioxide in the closed space is sucked in through inlet 453IN, pressurized, and introduced into separation tube 451d. Carbon dioxide seeps out of separation tube 451d and is introduced into carbon dioxide treatment device 454 via inlet 453IN and outlet 453OUT of degassing pump 453. Nitrogen and oxygen from which carbon dioxide has been removed are discharged into the outside atmosphere through outlet 451e. In carbon dioxide treatment device 454, carbon dioxide passes through electrolyte 454a to dissolve in water, and the decomposed gas passes through the space in collector 454b and is discharged from exhaust pipe 454c. Carbon dioxide treatment device 454 can also be configured to include an electrolysis device 4541.

[0123] Example D4 can also be applied, for example, by fixing the carbon dioxide removal system 400, including the air flow generating device 100A, to the ground and placing the rest in a predetermined closed space on the ground, thereby removing carbon dioxide from the closed space. The closed space is a space from which carbon dioxide is to be removed, such as a room indoors. It can also be applied by placing the carbon dioxide removal system 400 on a mobile body, thereby removing carbon dioxide from a closed space inside the mobile body. The closed space is a space from which carbon dioxide is to be removed, such as a passenger cabin, driver's cab, or cargo area of ​​the mobile body. The closed space may or may not be airtight. It may be any closed space that can be filled with carbon dioxide. [Explanation of symbols]

[0124] 1. Mobile 10 Structural wall 81 Automobiles 82 Aircraft 83 Railway Vehicles 100 Air flow generator 200 Filter System 250 Filter Device 300 Power Generation System 350 Power Generation Equipment 400 Carbon Dioxide Removal System 450 Carbon Dioxide Removal Device 451 Separation device 452 Compressor 453 Degassing Pump 454 Carbon dioxide treatment equipment

Claims

1. A carbon dioxide separation device which is partitioned and separated into a front chamber defined as the inside of the elongated thin tubes and a rear chamber defined as the outside of the elongated thin tubes by a separating material which separates the carbon dioxide molecules from the oxygen molecules and the nitrogen molecules, the carbon dioxide molecules being formed as a number of elongated thin tubes of a porous material so as to have permeable holes of a diameter which allow carbon dioxide molecules to pass through but nitrogen molecules and oxygen molecules do not, or permeable holes which are gaps between particles which allow carbon dioxide molecules to pass through but the nitrogen molecules and the oxygen molecules do not; a compressor having a compressor suction port and a compressor discharge port communicating with the front chamber, the compressor being driven by a driving force generated on a drive shaft of a drive source and pressurizing the front chamber with gas containing carbon dioxide and air sucked in through the compressor suction port; a degassing pump that includes a pump suction port and a pump discharge port that communicate with the rear chamber, and that is driven by a driving force transmitted from the drive shaft of the drive source to reduce the pressure in the rear chamber; a carbon dioxide removal system in which the carbon dioxide molecules are separated from the oxygen molecules and the nitrogen molecules by the separation material using a pressure difference between the front chamber and the rear chamber due to the pressurization in the front chamber by the compressor and the depressurization in the rear chamber by the degassing pump, an exhaust pipe for exhausting gas containing air from which carbon dioxide has been removed from the front chamber; a carbon dioxide treatment device disposed downstream of the degassing pump, the carbon dioxide treatment device comprising: a carbon dioxide pipe for discharging a gas containing carbon dioxide from the rear chamber; an electrolyte that easily dissolves carbon dioxide so that the carbon dioxide discharged from the carbon dioxide pipe passes through the electrolyte; and a carbon dioxide treatment device that decomposes the carbon dioxide discharged from the pump outlet; a degassing pipe for discharging a gas not containing carbon dioxide from the carbon dioxide treatment device; a feedback pipe communicating the degassing pipe with the compressor suction port.

2. The carbon dioxide removal system of claim 1 , wherein the carbon dioxide treatment device further comprises an electrolysis device.

3. the compressor comprises a compressor rotating shaft; the degassing pump comprises a pump rotating shaft; 2. The carbon dioxide removal system according to claim 1, wherein at least two of the drive shaft, the compressor rotary shaft, and the pump rotary shaft are directly coupled or mechanically joined so that the driving force of the drive shaft of the drive source is transmitted to the compressor rotary shaft and the pump rotary shaft.

4. 4. The carbon dioxide removal system of claim 3, wherein the direct coupling is a coaxial coupling and the mechanically coupled coupling is a coupling via a gear, chain, or belt.

5. the compressor comprises a compressor rotating shaft; the degassing pump comprises a pump rotating shaft; 3. The carbon dioxide removal system according to claim 2, wherein at least two of the drive shaft, the compressor rotary shaft, and the pump rotary shaft are directly coupled or mechanically joined so that the driving force of the drive shaft of the drive source is transmitted to the compressor rotary shaft and the pump rotary shaft.

6. 6. The carbon dioxide removal system of claim 5, wherein the direct coupling is a coaxial coupling and the mechanically coupled coupling is a coupling via a gear, chain, or belt.

7. the drive source is an airflow generating device having a rotor that rotates due to a relative airflow and rotates the drive shaft by the rotation thereof, the driving force transmitted to the degassing pump is a driving force generated in the drive shaft when the rotor is rotated by the air flow, The carbon dioxide removal system according to claim 1 , wherein the driving force transmitted to the compressor is a driving force generated in the drive shaft when the rotor blades are rotated by the air flow.

8. 8. The carbon dioxide removal system of claim 7, wherein the relative air flow is an air flow generated by the movement of a moving body, a naturally occurring air flow, or an air flow as a secondary flow generated in the air conduit due to a pressure drop inside the air conduit communicating with the main conduit caused by an air flow generated inside the main conduit relative to the moving body due to the movement of the moving body.

9. The carbon dioxide removal system according to claim 8 , wherein the moving object is an aircraft, a railway vehicle, or an automobile.

10. A carbon dioxide removal system as described in claim 8, wherein the naturally occurring air flow is wind.

11. The carbon dioxide removal system according to claim 1 , wherein the driving source is a motor or an engine.

12. A carbon dioxide removal system described in any one of claims 1 to 6, wherein the separation material is made of a material that can selectively separate carbon dioxide molecules from oxygen molecules and nitrogen molecules by using a molecular sieve effect on the carbon dioxide molecules.

13. A carbon dioxide removal system as described in claim 12, wherein the porous material is a polyimide film, porous carbon fiber, or ceramic.

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