Air turbine and power generation device

Abstract

An air turbine and a power generation device, the air turbine comprising a chamber, a valve and a rotor. The chamber comprises a first opening communicating with the atmosphere; the air pressure in the chamber is adjustable, and the difference between the air pressure in the chamber and the atmospheric pressure comprises a first air pressure difference and a second air pressure difference; the valve is connected with the chamber and is configured to open under the action of the first air pressure difference to form a first air flow by the chamber communicating with the atmosphere through the valve and the first opening respectively, and to close under the action of the second air pressure difference to form a second air flow by the chamber communicating with the atmosphere through the first opening, the directions of the first air pressure difference and the second air pressure difference being opposite; the rotor is configured to rotate under the drive of the second air flow. The air turbine can be used for power generation to convert the kinetic energy of the rotor into electrical energy, for example, the first air pressure difference and the second air pressure difference are obtained by utilizing the fluctuation of waves, and ultimately the wave energy is converted into electrical energy.

Description

Technical Field

[0001] At least one embodiment of this disclosure relates to an air turbine and a power generation device. Background Technology

[0002] Current wave energy development technologies (referring to the conversion of wave energy into electrical energy) mainly include oscillating buoy type, wave-overtaking type, and oscillating water column type. Typically, the oscillating buoy type relies on wave energy to propel a buoy, transferring the wave energy to energy conversion devices such as hydraulic motors to generate electricity. The wave-overtaking type directs waves to a higher elevation, allowing seawater to pass through a lower-level water turbine for energy conversion, ultimately converting the seawater's kinetic energy into electrical energy. The oscillating water column type converts wave energy into the kinetic energy of gas, and then further converts the gas's kinetic energy into electrical energy to generate electricity. Summary of the Invention

[0003] At least one embodiment of this disclosure provides an air turbine, which includes an air chamber, an air valve, and a rotor. The air chamber includes a first opening communicating with the atmosphere; the air pressure inside the air chamber is adjustable, and the pressure difference between the air chamber and the atmospheric pressure includes a first pressure difference and a second pressure difference; the air valve is connected to the air chamber and configured to open under the action of the first pressure difference to allow the air chamber to communicate with the atmosphere through the air valve and the first opening to form a first airflow, and to close under the action of the second pressure difference to allow the air chamber to communicate with the atmosphere through the first opening to form a second airflow, wherein the directions of the first pressure difference and the second pressure difference are opposite; the rotor is configured to rotate under the drive of the second airflow.

[0004] For example, in an air turbine provided in at least one embodiment of this disclosure, the air valve includes a valve plate and a rectifier. The valve plate is fixed between the air chamber and the atmosphere, and includes a first plate surface and a second plate surface opposite to the first plate surface; the first plate surface faces the direction of the first airflow entering the air chamber via the air valve, and the valve plate has a through hole extending through the valve plate in a direction from the first plate surface to the second plate surface; the rectifier is disposed on the second plate surface of the valve plate; when the air pressure in the air chamber is greater than the atmospheric pressure, generating the first air pressure difference, the rectifier is configured to move away from the through hole under the action of the first air pressure difference to open the air valve; when the air pressure in the air chamber is less than the atmospheric pressure, generating the second air pressure difference, the rectifier is configured to seal the through hole under the action of the second air pressure difference to close the air valve.

[0005] For example, the air turbine provided in at least one embodiment of this disclosure further includes an air guide tube, which includes a first end and a second end; the rotor is located in the air guide tube, the first end of the air guide tube is in communication with the atmosphere, and the second end of the air guide tube is connected to a first opening of the air chamber so that the air guide tube is in communication with the air chamber.

[0006] For example, in an air turbine provided in at least one embodiment of this disclosure, the air turbine further includes a valve box; the valve box includes a first end, a second end, and a sidewall; the first end has a first opening connected to the second end of the air guide pipe to communicate the valve box with the air guide pipe; the second end is opposite to the first end and has a second opening; the second opening is connected to the first opening of the air chamber to communicate the valve box with the air chamber; the sidewall is located between the first end and the second end of the valve box and includes the valve plate.

[0007] For example, in an air turbine provided in at least one embodiment of this disclosure, the second end of the air duct is directly connected to the first opening of the air chamber; the air chamber further includes a second opening; the air valve includes a valve box, the valve box including a first end, a second end, and a sidewall; the first end is isolated from the atmosphere; the second end is opposite to the first end and has a second opening; the second opening of the valve box is connected to the second opening of the air chamber to communicate between the valve box and the air chamber; the sidewall is located between the first end and the second end and includes the valve plate.

[0008] For example, in an air turbine provided in at least one embodiment of this disclosure, the valve box includes a plurality of said sidewalls connected to each other, each of said sidewalls including said valve plate.

[0009] For example, in at least one embodiment of the air turbine provided in this disclosure, the first plate faces the atmosphere; the air pressure in the air chamber is greater than atmospheric pressure to form the second pressure difference, and the gas in the air chamber flows through the rotor and enters the atmosphere to form the second airflow; the air pressure in the air chamber is less than atmospheric pressure to form the first pressure difference, and the gas in the atmosphere enters the air chamber through the air valve and the first end of the air guide pipe to form the first airflow; or, the second plate faces the atmosphere; the air pressure in the air chamber is less than atmospheric pressure to form the second pressure difference, and the gas in the atmosphere flows through the rotor and enters the air chamber to form the second airflow; the air pressure in the air chamber is greater than atmospheric pressure to form the first air pressure, and the gas in the air chamber enters the atmosphere through the air valve and the first end of the air guide pipe to form the first airflow.

[0010] For example, in an air turbine provided in at least one embodiment of this disclosure, the rectifier includes a first portion and a second portion connected to each other; the first portion is at least partially fixed to the valve plate, and the second portion is configured to leave the through hole under the action of the first air pressure difference and close the through hole under the action of the second air pressure difference.

[0011] For example, in an air turbine provided in at least one embodiment of this disclosure, the air duct is a straight pipe extending from the first opening of the air chamber to the rotor; the direction from the first portion of the rectifier to the second portion of the rectifier is parallel to the extending direction of the air duct.

[0012] For example, in an air turbine provided in at least one embodiment of this disclosure, the first part and the second part are integrally formed, or the first part is connected to the second part by a connector.

[0013] For example, in the air turbine provided in at least one embodiment of this disclosure, the rectifier is made of metal and has a thickness of 1mm-3mm in the direction from the first plate surface to the second plate surface; or, the rectifier is made of rubber or silicone and has a thickness of 1mm-5mm.

[0014] For example, in an air turbine provided in at least one embodiment of this disclosure, the valve plate further includes a support frame located in a through hole, the support frame including at least a pair of opposing ends, each of the at least one pair of ends being connected to the inner wall of the through hole, the support frame dividing the through hole into a plurality of non-communicating portions.

[0015] For example, in the air turbine provided in at least one embodiment of this disclosure, the support frame is cross-shaped or star-shaped.

[0016] For example, in an air turbine provided in at least one embodiment of this disclosure, the valve plate has a plurality of the through holes; a rectifier is provided for each of the plurality of through holes, or n adjacent through holes in the plurality of through holes share a rectifier, where n is a positive integer greater than or equal to 2.

[0017] For example, in an air turbine provided in at least one embodiment of this disclosure, the rotor includes a turntable and a plurality of rotating blades; the plurality of rotating blades are disposed around the turntable on the edge of the turntable, wherein each of the plurality of rotating blades includes a first surface configured to receive a second airflow, the plurality of rotating blades being configured to rotate under the action of the second airflow to drive the turntable to rotate; at least a portion of the first surface of each of the plurality of rotating blades faces the direction of the second airflow.

[0018] For example, in an air turbine provided in at least one embodiment of this disclosure, the rotor further includes a first shroud surrounding and connected to the plurality of rotating blades; the first shroud is a closed ring in the direction surrounding the plurality of rotating blades; the width of the first shroud in the axial direction of the rotor is greater than or equal to the thickness of the turntable in the axial direction of the rotor, the axial direction of the rotor being perpendicular to the surface of the turntable.

[0019] For example, in at least one embodiment of the air turbine provided in this disclosure, a stator is further included, which is located on one side of the rotor and configured such that the second airflow flows through the stator and then through the rotor, and includes a disk and a plurality of guide vanes; the disk includes a central region and an edge region surrounding the central region; the plurality of guide vanes are located in the edge region, arranged around the central region, and configured to guide the second airflow to the rotor.

[0020] For example, in an air turbine provided in at least one embodiment of this disclosure, the turntable includes a first shaft hole and a second shaft hole that are through each other; the rotor also includes a rotor shaft, a turntable, a first bearing, and a second bearing; the rotor shaft is installed in the first shaft hole and includes a first end and a second end opposite to the first end, the first end of the rotor shaft is located on a first side of the turntable near the stator, and the second end of the rotor shaft is located on a second side of the turntable away from the stator; the turntable is fixedly connected to the rotor shaft, located in the second shaft hole, connected to the turntable of the rotor, and configured to rotate under the drive of the turntable of the rotor when the turntable of the rotor rotates; the first bearing is sleeved on the rotor shaft and located on the side of the turntable near the first end of the rotor shaft; the second bearing is sleeved on the rotor shaft and located on the side of the turntable near the second end of the rotor shaft.

[0021] For example, in an air turbine provided in at least one embodiment of this disclosure, the rotor shaft and the shaft disc are made of steel, and the part of the rotor other than the rotor shaft and the shaft disc is made of organic material.

[0022] For example, in an air turbine provided in at least one embodiment of this disclosure, the stator further includes a guide cone located on the side of the stator's disk away from the rotor; the guide cone includes a first end and a second end opposite to each other in a first direction from the stator to the rotor; the first end of the guide cone is connected to the central region of the stator's disk, and from the second end of the guide cone to the first end of the guide cone, at least a portion of the cross-section of the guide cone gradually increases in size in a second direction, the second direction being perpendicular to the first direction.

[0023] For example, in an air turbine provided in at least one embodiment of this disclosure, the at least portion of the guide cone is conical, or the at least portion of the guide cone is part of a sphere.

[0024] For example, in an air turbine provided in at least one embodiment of this disclosure, the stator further includes a second surrounding band that surrounds and is connected to the plurality of guide vanes and is fixedly connected to the inner wall of the air duct to fix the stator to the air duct, wherein the second surrounding band is closed in the direction surrounding the plurality of guide vanes.

[0025] For example, in an air turbine provided in at least one embodiment of this disclosure, the guide cone, the stator's disc, the second shroud, and the plurality of guide vanes are integrally formed.

[0026] At least one embodiment of this disclosure also provides a power generation device, which includes any of the air turbines and generators provided in the embodiments of this disclosure, the generator including a rotating shaft connected to the rotor and configured to rotate under the drive of the rotor.

[0027] For example, in a power generation device provided in at least one embodiment of this disclosure, the gas chamber further includes a third opening configured to allow liquid to enter the gas chamber through the third opening, and the liquid level fluctuates to make the gas pressure in the gas chamber adjustable; the first opening is located on the upper side of the gas chamber near the rotor, and the third opening is located on the lower side of the gas chamber away from the rotor.

[0028] For example, in a power generation device provided in at least one embodiment of this disclosure, the generator further includes a housing located on the side of the rotor away from the gas chamber; when the rotor includes a rotor shaft, a first end of the generator shaft is connected to the housing, and a second end of the generator shaft opposite to the first end is connected to the rotor shaft.

[0029] For example, in a power generation device provided in at least one embodiment of this disclosure, the rotor shaft includes a first end near the generator; a bonding groove is provided on the surface of the first end of the rotor shaft facing the generator, and a second end of the generator shaft is located in the bonding groove.

[0030] For example, in at least one embodiment of the power generation device provided in this disclosure, the device further includes: a generator mounting base and a generator protective cover; the generator is mounted on the generator mounting base; when the air turbine includes an air duct, the rotor is located in the air duct, the air duct includes a first end and a second end, the first end of the air duct communicates with the atmosphere, the second end of the air duct is connected to a first opening of the air chamber to communicate with the air chamber, the generator mounting base has an air hole connected to the first end of the air duct and configured such that gas in the air chamber is discharged through the air hole or gas in the atmosphere enters the air chamber through the air hole; the generator protective cover covers the generator body and is mounted on the generator mounting base, wherein the generator mounting base and the generator protective cover are sealed together, and the air outlet is located on the outside of the generator protective cover.

[0031] For example, in at least one embodiment of the power generation device provided in this disclosure, a protective structure is further included, located on the side of the generator protective cover away from the rotor, and includes a protective cap mounting base, a protective cap, and a protective cap bracket, connected to the generator mounting base; the protective cap covers the generator mounting base and the protective cap mounting base; the orthographic projection of the generator mounting base on a plane parallel to the surface of the protective cap mounting base facing the protective cap and the orthographic projection of the protective cap mounting base on the same plane are both located within the orthographic projection of the protective cap on the same plane; the protective cap bracket connects the protective cap and the protective cap mounting base to mount the protective cap on the protective cap mounting base. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0033] Figure 1A This is a schematic diagram of the structure of an air turbine provided in one embodiment of the present disclosure;

[0034] Figure 1B for Figure 1A A schematic cross-sectional view of the air turbine is shown.

[0035] Figure 2A-2B A schematic diagram of the structure of a valve for an air turbine provided in an embodiment of this disclosure;

[0036] Figure 2C This is a schematic diagram of the structure of another air valve for an air turbine provided in an embodiment of the present disclosure;

[0037] Figure 2D A schematic diagram of the structure of another type of air valve for an air turbine provided in an embodiment of this disclosure;

[0038] Figure 2E A schematic diagram of the structure of another air valve for an air turbine provided in an embodiment of this disclosure;

[0039] Figure 2F This is a schematic diagram of the structure of another air valve for an air turbine provided in an embodiment of the present disclosure;

[0040] Figure 2G A schematic diagram of the structure of a rectifier plate of an air valve for an air turbine provided in an embodiment of this disclosure;

[0041] Figures 3A-3B A schematic diagram of the structure of a rotor disk for an air turbine rotor provided in one embodiment of the present disclosure;

[0042] Figure 3C A schematic diagram of the structure of the stator of an air turbine provided in an embodiment of this disclosure;

[0043] Figure 3D A schematic diagram of the structure of an air turbine stator combined with a flow guide cone provided in an embodiment of this disclosure;

[0044] Figure 3E A schematic diagram showing how the stator guides the airflow to the rotor;

[0045] Figure 3F A schematic diagram of the structure of a turntable for another rotor of an air turbine provided in an embodiment of this disclosure;

[0046] Figure 3G-3H This is a schematic diagram of the structure of the rotor shaft and rotor disk provided in an embodiment of the present disclosure;

[0047] Figure 4A This is a schematic diagram of the structure of an air turbine provided in one embodiment of the present disclosure;

[0048] Figure 4B for Figure 4A A schematic cross-sectional view of the air turbine is shown.

[0049] Figure 5 This is a schematic diagram of another air turbine structure provided in an embodiment of the present disclosure;

[0050] Figure 6 This is a schematic diagram of the structure of another air turbine provided in an embodiment of the present disclosure;

[0051] Figure 7A This is a schematic diagram of the structure of a power generation device provided in one embodiment of the present disclosure;

[0052] Figure 7B for Figure 7A A cross-sectional schematic diagram of the power generation device shown;

[0053] Figure 8A A partial schematic diagram of a power generation device provided in an embodiment of this disclosure;

[0054] Figure 8B A partial schematic diagram of a power generation device provided in one embodiment of this disclosure is shown below;

[0055] Figure 8C Partial schematic diagram three of a power generation device provided in an embodiment of this disclosure;

[0056] Figures 9A-9C for Figure 7B A schematic diagram of the generator mounting base for the power generation device in the diagram;

[0057] Figure 10 for Figure 7A A schematic diagram of the protection structure of the power generation device in the diagram;

[0058] Figure 11A This is a schematic diagram of another air turbine structure provided in an embodiment of the present disclosure;

[0059] Figure 11B This is a schematic diagram of another air turbine structure provided in an embodiment of the present disclosure;

[0060] Figure 11C This is a schematic diagram of another air turbine structure provided in an embodiment of the present disclosure. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0062] Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "inner," "outer," "upper," and "lower" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0063] The accompanying drawings in this disclosure are not drawn to scale, and the specific dimensions of each structure can be determined according to actual needs. The drawings described in this disclosure are only structural schematic diagrams.

[0064] In current oscillating water column wave energy generation devices, the energy conversion efficiency of air turbines is relatively low, or the rotors of air turbines are prone to stalling and generate significant noise. Rotor stall refers to the phenomenon where, when the pressure difference between the air-facing and air-repellent surfaces of the rotor blades is too large, the airflow within the boundary layer on the air-repellent surface of the rotor blades transforms into turbulence, causing a sharp drop in rotor energy conversion efficiency. Therefore, designing an air turbine capable of stable operation in the reciprocating airflow generated by an oscillating water column wave energy generation device and designing a power generation device to achieve high energy conversion efficiency are of great significance.

[0065] At least one embodiment of this disclosure provides an air turbine, which includes an air chamber, an air valve, and a rotor. The air chamber includes a first opening communicating with the atmosphere; the air pressure inside the air chamber is adjustable, and the pressure difference between the air chamber and the atmospheric pressure includes a first pressure difference and a second pressure difference; the air valve is connected to the air chamber and configured to open under the action of the first pressure difference, so that the air chamber communicates with the atmosphere through the air valve and the first opening to form a first airflow, and to close under the action of the second pressure difference, so that the air chamber communicates with the atmosphere through the first opening to form a second airflow, the first pressure difference and the second pressure difference being in opposite directions; the rotor is configured to rotate under the drive of the second airflow. This air turbine can be used to generate electricity by converting the kinetic energy of the rotor into electrical energy, for example, by using wave fluctuations to obtain the first and second pressure differences, thereby ultimately converting wave energy into electrical energy. The power generation device using this air turbine can react rapidly to the pressure difference in real time to generate electricity, with high power generation efficiency.

[0066] For example, Figure 1A This is a schematic diagram of an air turbine structure provided in one embodiment of the present disclosure. Figure 1B for Figure 1A The diagram shows a cross-sectional view of an air turbine. Figure 1A and Figure 1B As shown, the air turbine includes an air chamber 2, an air valve 3, and a rotor 4. The air chamber 2 includes a first opening 21 communicating with the atmosphere, and the air pressure within the air chamber 2 is adjustable. The pressure difference between the air chamber 2 and atmospheric pressure includes a first pressure difference and a second pressure difference. The first pressure difference and the second pressure difference are in opposite directions, that is, their values ​​are opposite in sign. The air valve 3 is connected to the air chamber 2 and configured to open under the action of the first pressure difference, allowing the air chamber 2 to communicate with the atmosphere through both the air valve 3 and the first opening 21 to form a first airflow, and to close under the action of the second pressure difference, allowing the air chamber to communicate with the atmosphere through the first opening 21 to form a second airflow. For example, in... Figure 1A Figure 1BIn the illustrated embodiment, the air valve 3 is located between the air chamber 2 and the rotor 4. When the air pressure in the air chamber 2 is lower than atmospheric pressure, a first pressure difference is generated. Under the action of this first pressure difference, the air valve 3 opens to allow the atmosphere and the air chamber 2 to communicate with each other. Gas in the atmosphere enters the air chamber 2 through the first opening 21 and the air valve 3, generating a first airflow. When the air pressure in the air chamber 2 is higher than atmospheric pressure, a second pressure difference is generated. Under the action of this second pressure difference, the air valve 3 closes to allow gas in the air chamber 2 to enter the atmosphere through the first opening 21, generating a second airflow. That is, the first opening 21 is the only outlet for the gas in the air chamber 2. The rotor 4 is configured to rotate under the drive of the second airflow. The rotor 4 is located outside the second outlet 21 of the air chamber 2, so that the second airflow is sprayed onto the rotor and drives the rotor to rotate. Thus, the air turbine can realize the opening or closing of the air valve 3 under the action of the first and second pressure differences to achieve real-time and rapid control of whether the second airflow driving the rotor to rotate is generated. The kinetic energy generated during rotor rotation can be used to generate electricity, thereby achieving real-time control to convert the kinetic energy of the airflow into the kinetic energy of the rotor. Furthermore, during the operation of this air turbine, the air valve 3 can be opened or closed under the influence of a first and a second pressure difference, eliminating the need for manual opening or closing of the valve 3 and the procedure of judging the relationship between the air pressure inside the air chamber 2 and atmospheric pressure before deciding whether to open or close the valve 3. Therefore, this air turbine can adapt to rapid conversion between the first and second pressure differences, achieving high energy conversion efficiency. For example, the air chamber 2 can be configured to allow liquid to enter, and the liquid surface fluctuations can make the air pressure inside the air chamber 2 adjustable. For example, the liquid could be waves, such as ocean waves. Thus, this air turbine can be used in power generation devices operating in seawater, allowing ocean waves to enter the air chamber 2 to convert the energy of the ocean waves, such as kinetic energy, into the potential energy and kinetic energy of the air, then into the kinetic energy of the rotor, and finally into electrical energy to generate electricity. Generally, the kinetic energy generated when ocean waves rise is greater than when they fall. In this embodiment, the second airflow is generated by compressing the air in the air chamber 2 when the waves rise. At this time, the energy of the second airflow is relatively large, and higher power generation efficiency can be achieved by using the second airflow to generate electricity.

[0067] For example, the air turbine also includes an air guide tube 1, which has a first end and a second end; the rotor 4 is located in the air guide tube 1, the first end of the air guide tube 1 is open to the atmosphere, and the second end of the air guide tube 1 is connected to the first opening 21 of the air chamber 2 to connect the air guide tube 1 with the air chamber 2. For example, as Figure 1B As shown, the air valve 3 is located between the air chamber 2 and the air guide pipe 1. The air guide pipe 1 and the rotor 4 located within it allow the second airflow to be concentrated and directed towards the rotor 4, reducing gas energy loss and improving energy utilization, thereby increasing the power generation efficiency of the power generation device using this air turbine. The second airflow enters the air guide pipe 1 through the first opening 21, flows through the rotor 4, and then enters the atmosphere from the first end of the air guide pipe 1.

[0068] For example, the air duct 1 includes multiple parts that are connected to each other by flanges to facilitate the installation of a rotor and a stator in the air duct 1.

[0069] For example, such as Figure 1A and Figure 1B As shown, the air turbine also includes a valve box 30, which includes a first end, a second end, and a side wall 301. The first end of the valve box 30 has a first opening, which connects to the second end of the air guide pipe 1 to communicate between the valve box 30 and the air guide pipe 1. For example, the first end of the valve box 30 and the second end of the air guide pipe 1 are connected by welding or bolts, etc., which is not limited in this embodiment, and those skilled in the art can implement it according to conventional techniques. The second end of the valve box 30 is opposite to the first end and has a second opening, which connects to the first opening of the air chamber to communicate between the valve box and the air chamber; the side wall 301 is located between the first end and the second end of the valve box 30.

[0070] like Figure 1A and Figure 1BThe valve 3 includes a valve plate 31 and a rectifier plate 32. In this embodiment, the side wall 301 of the valve box 30 includes the valve plate 31, for example, the side wall 301 is constructed as the valve plate 31. In other embodiments, the valve plate 31 may be part of the side wall 301. The valve plate 31 is fixedly connected between the air chamber 2 and the air guide pipe 1. Since the first end of the air guide pipe 1 is in communication with the atmosphere, the valve plate 31 is fixedly connected between the air chamber 2 and the atmosphere. The valve plate 31 includes a first plate surface 311 and a second plate surface 312 opposite to the first plate surface 311. For example, the first plate surface 311 faces the atmosphere. The first airflow includes a portion that enters the air chamber 2 through the valve 3 and a portion that enters the air chamber 2 sequentially through the air guide pipe 1 and the first opening 21 of the air chamber 2; the first plate surface 311 faces the direction of the first airflow entering the air chamber 2 through the valve 3. The valve plate 31 has a through hole 35 extending from the first plate surface 311 to the second plate surface 312. A rectifier 32 is disposed on the second plate surface 312 of the valve plate 31. The air pressure in the air chamber 2 is lower than the atmospheric pressure, resulting in a first air pressure difference. The rectifier 32 is configured to leave the through hole 35 under the action of the first air pressure difference, thereby opening the air valve 3 and connecting the air chamber 2 with the atmosphere. The gas in the atmosphere enters the valve box 30 through the through hole 35 and enters the air chamber 2 through the first opening 21. At the same time, the gas in the atmosphere enters the air chamber 2 through the first end of the air guide pipe 1, the valve box 30, and the first opening 21 of the air chamber 2 to form a first airflow. The air pressure in the air chamber 2 is higher than the atmospheric pressure, resulting in a second air pressure difference. The rectifier 32 is configured to seal the through hole 35 under the action of the second air pressure difference, thereby closing the air valve 3 and allowing the gas in the air chamber 2 to enter the atmosphere through the first opening 21 to generate a second airflow. That is, the first opening 21 is the only outlet for the gas in the air chamber 2. The rotor 4 is configured to rotate under the drive of the second airflow. The rotor 4 is located outside the second outlet 21 of the air chamber 2, so that the second airflow is sprayed toward the rotor 4 and drives the rotor 4 to rotate.

[0071] For example, the valve box 30 includes a plurality of sidewalls 301 connected to each other, each of the plurality of sidewalls 301 including the valve plate 31 to increase the flow rate of the first airflow, thereby increasing the conversion speed of the first airflow and the second airflow, thereby increasing the energy conversion efficiency. When the air turbine is applied in a power generation device, it can improve the power generation efficiency.

[0072] For example, in Figure 1A-1B In the embodiment shown, the first plate surface 311 of the valve plate 31 is rectangular in shape, but is not limited to a rectangle.

[0073] For example, the rectifier 32 includes a first portion 321 and a second portion 322 connected to each other. The first portion 321 is at least partially fixed to the valve plate 31; for example, the end 323 of the first portion 321 remote from the second portion 322 is fixed to the valve plate 31. Figure 2G This is a schematic diagram of a rectifier, such as... Figure 2G As shown, the end 323 of the first portion 321 of the rectifier 32, away from the second portion 322, has a hole 324 penetrating the rectifier, as... Figure 1B As shown, the end of the first part 321 of the rectifier 32 away from the second part 322 is fixed to the valve plate 31 by a fastener 325 passing through the hole 324. The second part 322 is not fixed to the valve plate 31. In its natural state (when the air pressure in the air chamber 2 is equal to the atmospheric pressure), it hangs down and adheres to the first plate surface 311 of the valve plate 31. Therefore, when the air pressure in the air chamber 2 is less than the atmospheric pressure and a first air pressure difference is generated, the second part 322 leaves the through hole 35 under the action of the first air pressure difference, that is, it moves away from the second plate surface 312 and leaves the through hole 35. This allows the gas in the atmosphere to enter the valve box 30 through the through hole 35 and then enter the air chamber 2. At the same time, the gas in the atmosphere enters the air chamber 2 through the first end of the air guide pipe 1, thereby generating a first airflow. Furthermore, when the air pressure in the air chamber 2 is greater than the atmospheric pressure and a second air pressure difference is generated, the second part 322 is subjected to pressure along the direction from the second plate surface 312 to the first plate surface 311 under the action of the second pressure difference and adheres to the second plate surface 312 of the valve plate 31. Thus, at this time, the rectifier plate 32 closes the through hole 35 so that the gas in the air chamber 2 cannot be discharged through the air valve 3, but can only enter the air guide pipe 1 through the first opening 21, flow through the rotor 4 in the air guide pipe 1 and then be discharged, for example, into the atmosphere, thereby forming a second airflow.

[0074] For example, the air duct 1 is a straight pipe extending from the first opening 21 of the air chamber 2 to the rotor 4. The straightness of the air duct 1 reduces the path of the second airflow, improving energy utilization efficiency, thereby increasing power generation efficiency when the air turbine is used for power generation. The direction from the first portion 321 to the second portion 322 of the rectifier 32 is parallel to the extension direction of the air duct 1, so that during the operation of the air turbine, the second portion 322 of the rectifier 32 hangs down under gravity to cover the through hole 35. For example, the extension direction of the air duct 1 is the same as the direction of the fluctuation of the liquid level in the air chamber 2. Compared to other cases, in this embodiment, when the rectifier 32 is attached to the first plate surface 311 of the valve plate 31 to close the through hole 35, the sealing effect is relatively good and it is also easier to manufacture.

[0075] For example, the rectifier 32 can be made of a soft material with a certain degree of flexibility, such as rubber or silicone. The thickness of the rectifier 32 along the direction from the first plate surface 311 to the second plate surface 312 is 1mm-3mm. Alternatively, the rectifier 32 can also be made of metal, with a thickness of 1mm-5mm along the direction from the first plate surface 311 to the second plate surface 312. If the rectifier is too thick, it will be difficult to open the through hole 35 under a certain first air pressure difference; if the rectifier is too thin, it will be difficult to close the through hole 35 under a certain second air pressure difference. The flexibility and effectiveness of the rectifier in achieving its above-mentioned functions are related to its material and thickness. Within the above range, a relatively stable and instantaneous control of the opening and closing of the air valve can be achieved. The entire air turbine can be made very large or very small. It can range from several meters in size to a few centimeters in size. The size of the through hole and the rectifier are designed according to the overall size of the air turbine and the size of the valve plate; this embodiment does not limit this.

[0076] For example, in Figure 1A-1B In the illustrated embodiment, the first part 321 and the second part 322 are integrally formed, meaning that the first part 321 and the second part 322 are made of the same material and there is no seam between them. Of course, in other embodiments, the first part 321 can also be connected to the second part 322 by a connector.

[0077] For example, such as Figure 1A-1B As shown, the direction from the first part 321 of the rectifier 32 to the second part 322 of the rectifier 32 is perpendicular to the direction from the first end 11 of the air guide tube 1 to the second end 12 of the air guide tube 1. This is to facilitate the second part 322 of the rectifier 32 to hang down under the action of gravity to cover the through hole 35 during the operation of the air turbine. Compared with other cases, in this embodiment, when the rectifier 32 is attached to the first plate surface 311 of the valve plate 31 to close the through hole 35, the sealing effect is relatively good and it is also easy to manufacture.

[0078] The size of the rectifier 32 is larger than the size of the through hole 35, so that the rectifier can cover and seal the through hole 35 when the air valve 3 is closed. For example, a 1cm-4cm margin is left around the through hole 35 on the valve plate 31 to ensure the air chamber is sealed when the air valve 3 is closed. For example, the rectifier 32 is circular with a diameter of 330mm, and the through hole 35 is circular with a diameter of 300mm. Alternatively, the rectifier 32 is rectangular with a length and width of 330mm*330mm, and the through hole rectifier is rectangular with a length and width of 300mm*300mm, so that the air valve 3 has a more stable control effect. The dimensions of the rectifier and the through hole are not limited in this embodiment. The above data are exemplary. The specific dimensions of the rectifier can be designed according to the size of the hole in actual applications. The size of the hole can be designed according to the size of the valve plate and the magnitude of the first and second air pressure differences.

[0079] For example, such as Figure 1A-1B As shown, the valve plate 31 also includes a support frame 34 located in the through hole 35. The support frame 34 includes at least one pair of opposing ends, each of which is connected to the inner wall of the through hole 35. The support frame 34 divides the through hole 35 into multiple non-communicating parts. For example, in this embodiment, the support frame 34 divides the through hole 35 into six non-communicating parts. Thus, when the rectifier 32 adheres to the valve plate 31 and closes the through hole 35 under the action of the second pressure difference, the support frame 34 provides support to the rectifier 32 to enhance the stability of the rectifier 32's operating state, ensure the sealing effect, and extend the life of the rectifier 32.

[0080] For example, the support frame 34 can be integrally formed with the valve plate 31 to simplify the structure and manufacturing process. Alternatively, the support frame 34 can also be manufactured separately and fixed to the wall of the through hole 35 on the valve plate 31 by fasteners such as nuts.

[0081] For example, in Figure 1A-1B In the illustrated embodiment, the support frame 34 comprises a plurality of strips that intersect each other.

[0082] For example, the planar shape of the rectifier segment can be circular, rectangular, etc. Correspondingly, the planar shapes of the first portion 321 and the second portion 322 can be, for example, rectangular, semi-circular, sector-shaped, etc. Of course, the planar shape of the rectifier segment is not limited to the types listed above, and the embodiments of this disclosure do not limit the planar shape of the rectifier segment.

[0083] Figures 2A-2F This is a schematic diagram of the structure of a valve for one of several air turbines provided in an embodiment of this disclosure. For example, in Figure 2A-2BIn the illustrated embodiment, the support frame 34 is cross-shaped; in the embodiment shown in 2C, the support frame 34 is star-shaped. Of course, the shape of the support frame 34 is not limited to the types listed above, and this disclosure does not limit the shape of the support frame 34. For example, as... Figure 2D As shown, in some embodiments, a support frame may not be provided in the through hole 35.

[0084] For example, in this embodiment, the valve plate 31 is circular in shape. For example, as Figure 2E and Figure 1B As shown, the first surface 311 of the valve plate 31 is rectangular in shape. The shape of the first surface 311 of the valve plate 31 is not limited to the types listed above. The above embodiments are merely exemplary. This disclosure does not limit the shape of the first surface 311 of the valve plate 31, and those skilled in the art can select it as needed.

[0085] For example, such as Figure 2F As shown, the valve plate 31 has a plurality of through holes 35; a rectifier 32 is provided for each of the plurality of through holes 35. Alternatively, in other embodiments, n adjacent through holes 35 share a single rectifier 32, where n is a positive integer greater than or equal to 2. Providing multiple through holes 35 is advantageous when the airflow rate is large, allowing the airflow to pass rapidly through the valve and be injected onto the stator and rotor; furthermore, when the size of the air turbine is large, providing multiple through holes is more beneficial to the stability and reliability of the valve 3 operation than a single through hole.

[0086] Figures 3A-3B This is a schematic diagram of the structure of an air turbine rotor according to an embodiment of the present disclosure. Figure 3C-3D This is a schematic diagram of the structure of the stator of an air turbine provided in an embodiment of this disclosure. (Combined with...) Figure 1A-1B and Figures 3A-3B The rotor 4 includes a turntable 41 and a plurality of rotating blades 44. The plurality of rotating blades 44 are arranged around the edge of the turntable 41, for example, evenly arranged around the edge of the turntable 41, to ensure that the airflow flows evenly through the rotor, stabilizing the rotor's rotation and the generated kinetic energy, thereby ensuring relatively stable power generation efficiency. Each of the plurality of rotating blades 44 includes a first surface 441, configured to receive a second airflow. The plurality of rotating blades 44 are configured to rotate under the action of the second airflow to drive the turntable 41 to rotate; at least a portion of the first surface 441 of each of the plurality of rotating blades faces the second end of the air duct 1, i.e., facing the direction of the second airflow. Thus, the second airflow flows through the rotor 4 in a direction from the second end of the air duct 1 to the first end of the air duct 1.

[0087] For example, such as Figure 3AAs shown, the rotor 4 may further include a first surrounding band 43, which surrounds and connects to the plurality of rotating blades 44. The first surrounding band 43 is a closed ring in the direction surrounding the plurality of rotating blades 44. The width of the first surrounding band 43 in the axial direction of the rotor 4 is greater than or equal to the thickness of the turntable 41 in the axial direction of the rotor 4, and the axial direction of the rotor 4 is perpendicular to the surface of the turntable 41. This ensures that the first surrounding band 44 covers the entire rotating blade 44, so that the first surrounding band 43 can better protect the plurality of rotating blades 44 and improve the lifespan of the rotor 4.

[0088] For example, in Figure 3A In the embodiment of the rotor shown, the rotor 4 has a shaft hole 45 on its turntable 41. The air turbine also includes a rotor shaft ( Figure 3A Not shown, equivalent to Figure 1B The rotor shaft 46 passes through the shaft hole 45 and is connected to the turntable 41. For example, the shaft hole 45 includes a main body and a protrusion that communicates with the main body. For example, the cross-sectional shape of the main body of the shaft hole 45 in the direction perpendicular to the axial direction is circular, and the cross-sectional shape of the protrusion in the direction perpendicular to the axial direction is square. Thus, the rotor shaft is fitted into the turntable 41 through the shaft hole 45. Therefore, the rotor shaft is configured such that the rotation of the multiple rotating blades 44 drives the turntable 41 and the rotor shaft to rotate.

[0089] Combination Figure 1A-1B and Figure 3C-3D The air turbine may also include a stator 5, which is fixed in the air duct 1 and located on the side of the rotor 4 near the air chamber 2, configured so that the second airflow passes through the stator 5 before flowing through the rotor 4. Furthermore, the stator 5 includes a disk 51 and multiple guide vanes 52, the disk 51 of the stator 5 including a central region and an edge region surrounding the central region. Figure 3C As shown, on the first side of the stator 5 facing the rotor, the central region of the stator 5's disc 51 includes a first bearing housing 54, in which a first bearing 11 is mounted; the position of the first bearing 11 will be described later. Multiple guide vanes 52 are located in the edge region, arranged around the central region, and configured to guide the airflow to the rotor 4. Thus, the stator 5 functions as a guide to improve the energy utilization rate of the airflow, thereby improving the conversion efficiency of the airflow's energy into electrical energy throughout the entire process, ultimately utilizing the rotor's kinetic energy.

[0090] For example, multiple guide vanes 52 of the stator 5 are welded inside the air guide tube 1, for example, welded to the wall of the first cavity; or, as... Figure 3CAs shown, the stator 5 also includes a second surrounding band 53, which surrounds and is connected to the plurality of guide vanes 52. It is fixedly connected to the inner wall of the air duct 1 to fix the stator 5 to the air duct 1. The second surrounding band 53 is closed in the direction surrounding the plurality of guide vanes 52. For example, the second surrounding band 53 is welded to the inner wall of the air duct 1.

[0091] Figure 3F This is a schematic diagram of another rotor for an air turbine provided in one embodiment of the present disclosure. Figure 3G-3H This is a schematic diagram of the rotor shaft and rotor disk provided in one embodiment of the present disclosure. (Combined with...) Figure 1B and Figure 3F-3H In one embodiment, for example, the turntable 41 includes a first shaft hole 451 and a second shaft hole 452 that are through each other; the rotor 4 also includes a rotor shaft 46, a turntable 47, a first bearing 11, and a second bearing 12. The rotor shaft 46 is mounted in the first shaft hole 451 and includes a first end and a second end opposite to the first end. The first end of the rotor shaft 46 is located on a first side of the turntable 47 near the stator 5, and the second end of the rotor shaft 46 is located on a second side of the turntable 47 away from the stator 5. The turntable 47 is fixedly connected to the rotor shaft 46, for example, the turntable 47 and the rotor shaft 46 are integrally formed, which is simple to manufacture and can simplify the structure of the rotor. For example, the turntable 47 is located in the second shaft hole 452, connected to the turntable 41 of the rotor 4, and configured to rotate under the drive of the turntable 41 of the rotor 4 when the turntable 41 of the rotor 4 rotates. The first bearing 11 is sleeved on the rotor shaft 46, located on the side of the turntable 41 near the first end of the rotor shaft 46. It serves to bear and support the turntable 41, rotor shaft 46, and turntable 47 of the rotor 4, and to bear the weight of these components, thus reducing the load on the rotor shaft. The second bearing 12 is sleeved on the rotor shaft 46, located on the side of the turntable 41 near the second end of the rotor shaft 46. The first bearing 11 and the second bearing 12 can also share the axial force and the circumferential force perpendicular to the axial direction received by the rotor shaft during operation, which helps to improve the lifespan of the rotor shaft.

[0092] For example, such as Figure 3H As shown, the first end of the rotor shaft 46 has a keyway 465. When the air turbine is used in a generator, the keyway 465 is used to connect with the generator shaft so that the generator shaft 71 rotates with the rotation of the rotor shaft.

[0093] For example, such as Figure 3GAs shown, the rotor also includes a first collar 463 and a second collar 464, both of which are fixed to the rotor shaft 46, for example, both are integrally formed with the rotor shaft 46. The first bearing 11 includes an outer ring and an inner ring located outside the inner ring (the outer side refers to the side of the inner ring away from the rotor shaft 46), and the second bearing 12 includes an outer ring and an inner ring. The first collar 463 is located on the side of the first bearing 11 near the rotating shaft disc 47. The surface of the first collar 463 facing the first bearing 11 is in contact with the surface of the inner ring of the first bearing 11 facing the first collar 463. Thus, the first collar 463 supports the first bearing 11 and enhances the protection of the rotor shaft 46. The second collar 464 is located on the side of the second bearing 12 near the rotating shaft disc 47. The surface of the second collar 464 facing the second bearing 12 is in contact with the surface of the inner ring of the second bearing 12 facing the second collar 464. Thus, the second collar 464 supports the second bearing 12 and enhances the protection of the rotor shaft 46.

[0094] For example, the rotor shaft 46 and the shaft disc 47 are made of steel, while the parts of the rotor 4 other than the rotor shaft 46 and the shaft disc 47 are made of organic materials. The large mass of the rotor shaft, made of steel, increases the rotor's moment of inertia, preventing the rotor speed from immediately rising to a high value when encountering strong airflow. This improves the stability of the air turbine's operation and consequently enhances the stability of the power generation device using this air turbine. Using organic materials for the other parts of the rotor reduces the weight of the power generation device while ensuring its stable operation, facilitating installation and transportation. This weight reduction is particularly important for large-sized power generation devices, as it reduces the requirements for installation equipment, a crucial point in practical engineering.

[0095] For example, in one embodiment, the rotating shaft turntable 47 and the turntable 41 are connected by bolts. For example, the turntable 41 includes bolt holes 453, and the rotating shaft turntable 47 and the turntable 41 are connected by bolt holes 453, bolts, and nuts. Of course, the connection method between the rotating shaft turntable 47 and the turntable 41 is not limited to the above method, as long as the rotating shaft turntable 47 and the rotating shaft 46 can be rotated under the drive of the turntable 41.

[0096] Figure 3D This is a schematic diagram of the structure of an air turbine stator combined with a guide cone according to an embodiment of the present disclosure. Figure 1A-1B and Figure 3DThe stator 5 also includes a guide cone 6, which is located on the side of the stator 5's disk 51 away from the rotor 4. The guide cone 6 includes a first end and a second end opposite to each other in a first direction, which is the direction from the stator to the rotor, i.e., from the second end of the air guide pipe 1 to the first end of the air guide pipe 1. The first end of the guide cone 6 is connected to the central region of the stator 5's disk 51, for example, by welding or threading. Figure 3C As shown, for example, on the second side of the guide cone facing the stator 5, the central region of the disk 51 of the stator 5 includes a stator thread 55, and the disk 51 of the stator 5 is connected to the guide cone 6 through the stator thread 55. Alternatively, the first end of the guide cone 6 is integrally formed with the disk 51 of the stator 5 to simplify the structure of the stator. From the second end to the first end of the guide cone 6, the cross-sectional dimension of at least a portion of the guide cone 6 gradually increases in the second direction, which is perpendicular to the first direction, to accelerate the airflow, increase the kinetic energy of the gas, thereby increasing the kinetic energy of the subsequently obtained rotor, and thus increasing the electrical energy obtained by converting the rotor's kinetic energy into electrical energy. Therefore, it is possible to improve the utilization rate of gas energy and the energy conversion efficiency of converting gas energy into electrical energy throughout the process. For example, the at least portion of the guide cone 6 is conical, such as conical or pyramidal, or the at least portion of the guide cone 6 is part of a sphere.

[0097] For example, the guide cone 6, the stator 5's disc 51, the second surrounding belt 53, and multiple guide vanes 52 are integrally formed, which helps to simplify the structure and manufacturing process of the air turbine.

[0098] For example, the materials of rotor 4, stator 5 and guide cone 6 can all be metallic materials, such as corrosion-resistant metals, such as aluminum, aluminum alloy, stainless steel, etc., or organic materials, such as photosensitive resin. In this case, the stator can be made by 3D printing.

[0099] Figure 3E A schematic diagram showing how the stator guides the airflow to the rotor, combined with... Figures 3A-3B and Figure 3EThe configuration of multiple guide vanes 52 of the stator 5 to guide the airflow to the rotor 4 will be described below. The vertical cross-sectional shape of the rotating blade 44 is crescent-shaped, and the curvature of one side of the first face 441 of the rotating blade 44 is greater than the curvature of one side of the second face 442. The portion of the first face 441 of each of the multiple rotating blades 44 closest to the stator 5 faces the direction of the incoming airflow. The vertical cross-section of the guide vane 52 of the stator 5 consists of a straight segment 522 and an arc segment 521, and the direction of the airflow discharged by the straight segment 522 is aligned with the direction of the airflow inflow on the side of the first face 441 adjacent to it on the rotating blade 44. The airflow discharged from the straight segment 522 of the guide vane 52 is guided to the first face 441 of the rotating blade 44, and the rotating blade 44 rotates under the action of this airflow.

[0100] Figure 4A This is a schematic diagram of another air turbine structure provided in an embodiment of the present disclosure. Figure 4B for Figure 4A The diagram shows a cross-sectional view of an air turbine. Figure 4A and Figure 4B The illustrated embodiments and Figure 1A and Figure 1B The illustrated embodiments have the following differences. Figure 4A and Figure 4B In the illustrated embodiment, the second plate surface 312 faces the atmosphere, and at least a portion of the first surface 441 of each of the plurality of rotating blades 44 faces the first end of the air guide pipe 1, i.e., facing the direction of the second airflow. The air pressure in the air chamber 2 is less than the atmospheric pressure to form the second pressure difference. Under the action of the second pressure difference, the rectifier plate 31 adheres to the second plate surface 312 of the valve plate 32 and closes the through hole 35. The gas in the atmosphere enters the air guide pipe through the first end of the air guide pipe 1, flows through the rotor 4, and then enters the air chamber 2 through the first opening 21 to form the second airflow. The air pressure in the air chamber 2 is greater than the atmospheric pressure to form the first air pressure. The gas in the air chamber 2 enters the atmosphere through the air valve 3 and the first end of the air guide pipe 1 to form the first airflow.

[0101] For example, Figure 4A and Figure 4B In the illustrated embodiment, the stator 5 is fixed in the air guide tube 1, located on the side of the rotor 4 away from the air chamber 2, configured so that the second airflow passes through the stator 5 and then through the rotor 4. The guide cone 6 is located on the side of the stator 5's disc 51 away from the rotor 4, and the guide cone 6 includes a first end and a second end opposite to each other in a first direction, which is the direction from the stator to the rotor, i.e., from the first end of the air guide tube 1 to the second end of the air guide tube 1.

[0102] The air turbine provided in this embodiment can achieve the same level as... Figure 1A and 1BThe technical effects of the air turbine shown are the same or similar to those of the air turbine illustrated, and will not be repeated here. Other unmentioned features and corresponding technical effects of the air turbine provided in this embodiment are similar to those of the air turbine shown in this embodiment. Figure 1A and 1B The same applies to the embodiments shown; please refer to the previous description.

[0103] Figure 5 This is a schematic diagram of the structure of another air turbine provided in an embodiment of the present disclosure. Figure 5 The illustrated embodiments and Figure 1A and Figure 1B The illustrated embodiment has the following differences. The second end of the air duct 1 is directly connected to the first opening 21 of the air chamber 2; direct connection means that there are no other connecting structures, such as transition pipes, between the second end of the air duct 1 and the first opening 21 of the air chamber 2. Compared to other methods, direct connection of the air duct 1 to the air chamber 2 can improve the gas flow rate and energy utilization efficiency, thereby improving the power generation efficiency when the air turbine is used for power generation. The air chamber 2 also includes a second opening 22; the valve box 30 includes a first end, a second end, and sidewalls. The first end of the valve box 30 is isolated from the atmosphere; the second end of the valve box 30 is opposite to its first end and has a second opening; the second opening of the valve box 30 is connected to the second opening 21 of the air chamber 2 to communicate between the valve box 30 and the air chamber 2; the sidewall 301 is located between the first end and the second end of the valve box 30 and is configured to include the valve plate 31, for example, the valve box 30 includes a plurality of interconnected sidewalls 301, each sidewall 301 being configured as a valve plate 31.

[0104] Figure 5The illustrated embodiment, with the first plate surface 311 facing the atmosphere, has a rectifier 32 disposed on the second plate surface 312 of the valve plate 31, i.e., the rectifier 32 is located inside the valve box 30. The valve plate 31 has a through hole 35 extending through the valve plate 31 in the direction from the first plate surface 311 to the second plate surface 312. When the air pressure in the air chamber 2 is lower than the atmospheric pressure, creating a first air pressure difference, the rectifier 32 is configured to leave the through hole 35 under the action of the first air pressure difference, thereby opening the air valve 3, thus connecting the air chamber 2 with the atmosphere. Gas in the atmosphere enters the valve box 30 through the through hole 35 and enters the air chamber 2 through the second opening 22. At the same time, gas in the atmosphere enters the air chamber 2 through the first end of the air guide pipe 1, the valve box 30, and the first opening 21 of the air chamber 2, thereby forming a first airflow. Therefore, the first airflow includes a portion that enters the air chamber 2 sequentially through the air valve 3 and the second opening 22 of the air chamber, and a portion that enters the air chamber 2 sequentially through the air guide pipe 1 and the first opening 21 of the air chamber 2. Thus, the first plate surface 311 faces the direction of the first airflow entering the valve box 30 via the air valve 3. When the air pressure inside the air chamber 2 is greater than atmospheric pressure, creating a second pressure difference, the rectifier plate 32 is configured to seal the through hole 35 under the action of the second pressure difference, causing the air valve 3 to close. This allows the gas in the air chamber 2 to enter the atmosphere through the first opening 21, generating a second airflow. That is, the first opening 21 is the only outlet for the gas in the air chamber 2. The rotor 4 is configured to rotate under the drive of the second airflow. The rotor 4 is located outside the second outlet 21 of the air chamber 2, so that the second airflow is sprayed onto the rotor 4, causing the rotor 4 to rotate. Thus, Figure 5 The illustrated embodiments are able to achieve the same level as Figure 1B The technical effects of the illustrated embodiment are similar and will not be repeated here. The specific structures of rotor 4 and stator 5 are similar to those shown. Figure 1B The same applies to the embodiments shown, and can be found in the previous related descriptions.

[0105] Of course, in another embodiment... Figure 5 The second plate surface of the valve plate 31 can face the atmosphere. In this case, the valve disc is located outside the valve box 30. Correspondingly, the specific structures of the rotor 4 and the stator 5 are the same as those of the valve plate 31. Figure 4B The same applies to the embodiments shown, and can be found in the previous related descriptions.

[0106] Figure 5 Other unmentioned features and corresponding technical effects of the air turbine provided in the illustrated embodiment are consistent with... Figure 1A and 1B The same applies to the embodiments shown; please refer to the previous description.

[0107] Figure 6 This is a schematic diagram of the structure of another air turbine provided in an embodiment of the present disclosure. Figure 6 The illustrated embodiments and Figure 5The illustrated embodiment differs in the following ways. The valve housing 30 includes a sidewall 301. For example, the valve housing 30 includes a connecting pipe 302, which is curved and includes a portion parallel to a first direction and a second portion intersecting the first portion. The connecting pipe 302 includes a first opening and a second opening opposite the first opening. The first opening of the connecting pipe 302 connects to a second opening 22 of the air chamber to communicate with the air chamber 2. An air valve 3 is disposed at the second opening of the connecting pipe 302, for example, a valve plate 30 is linked to the connecting pipe 302 to cover the second opening of the connecting pipe 302. Of course, in other embodiments, the valve plate 30 may also be located inside the connecting pipe 302. Figure 6 Taking the first plate surface 311 of the valve plate 32 facing the atmosphere and the rectifier 32 located inside the valve box as an example, in other embodiments, the second plate surface 312 of the valve plate 32 may also face the atmosphere and the rectifier 32 may be located outside the valve box.

[0108] exist Figure 6 In the illustrated embodiment, when the air pressure inside the air chamber 2 is lower than atmospheric pressure, creating a first pressure difference, the rectifier plate 32 is configured to leave the through hole 35 under the action of the first pressure difference, causing the air valve 3 to open, thereby connecting the air chamber 2 with the atmosphere. Gas in the atmosphere enters the connecting pipe 302 of the valve box 30 through the through hole 35, and then enters the air chamber 2 through the second opening 22. Simultaneously, gas in the atmosphere enters the air chamber 2 through the first end of the air guide pipe 1, the valve box 30, and the first opening 21 of the air chamber 2, thus forming a first airflow. Therefore, the first airflow includes a portion entering the air chamber 2 sequentially through the air valve 3 and the second opening 22 of the air chamber, and a portion entering the air chamber 2 sequentially through the air guide pipe 1 and the first opening 21 of the air chamber 2. Therefore, the first plate surface 311 faces the direction of the first airflow entering the valve box 30 through the air valve 3. When the air pressure inside chamber 2 exceeds atmospheric pressure, creating a second pressure difference, the rectifier plate 32 is configured to seal the through hole 35 under the action of the second pressure difference, thereby closing the air valve 3. This allows the gas in chamber 2 to enter the atmosphere through the first opening 21, generating a second airflow. The first opening 21 is the only outlet for the gas in chamber 2. The rotor 4 is configured to rotate under the drive of the second airflow. The rotor 4 is positioned outside the second outlet 21 of chamber 2, so the second airflow is sprayed onto the rotor 4, causing it to rotate.

[0109] Figure 6 Other unmentioned features and corresponding technical effects of the air turbine provided in the illustrated embodiment are consistent with... Figure 5 The same applies to the embodiments shown; please refer to the previous description.

[0110] It should be noted that the specific structure of the valve box includes various forms, and the above are just a few examples. Any other modifications that can achieve the functions of the valve box described above are within the protection scope of this disclosure.

[0111] At least one embodiment of this disclosure also provides a power generation device, which includes any of the air turbines and generators provided in the embodiments of this disclosure. The generator includes a shaft connected to a rotor and configured to rotate under the drive of the rotor. Thus, the power generation device can convert the energy of the generated airflow into electrical energy, achieving high power generation efficiency.

[0112] For example, Figure 7A This is a schematic diagram of the structure of a power generation device provided in one embodiment of the present disclosure. Figure 7B for Figure 7A A schematic cross-sectional view of the power generation device is shown. Figures 7A-7B As shown, the generator includes a shaft 71, which is connected to the rotor 4 and configured to rotate under the drive of the rotor 4.

[0113] For example, the air chamber 2 also includes a third opening 23, which is configured to allow liquid to enter the air chamber 2 through the third opening 23, and the liquid surface fluctuates to make the air pressure inside the air chamber 2 adjustable. For example, the liquid entering the air chamber 2 is a wave, such as ocean waves. This power generation device can be used to operate in seawater, thereby allowing ocean waves to enter the air chamber 2 to convert the energy of the ocean waves, such as kinetic energy, into electrical energy to generate electricity. The power generation process of the power generation device is explained below using ocean waves as an example.

[0114] The first opening 21 is located on the upper side of the air chamber 2 near the rotor 4, and the third opening 23 is located on the lower side of the air chamber 2 away from the rotor 4. This creates a height difference between the first opening 21, the second opening 22, and the third opening 23 of the air chamber 2. As the waves rise and fall, the volume of seawater entering the air chamber 2 changes, thus altering the gas volume of the air chamber 2. Consequently, as the waves rise and fall, when the seawater level rises, the gas inside the air chamber 2 is compressed, increasing the gas pressure; conversely, when the seawater level rises, the gas volume inside the air chamber 2 increases, decreasing the gas pressure.

[0115] Figure 8A This is a partial schematic diagram of a power generation device provided according to an embodiment of the present disclosure. For example, such as... Figure 7B and Figure 8AAs shown, the generator also includes a housing 73, located on the side of the rotor 4 away from the air chamber 2. The first end of the generator shaft 71 is connected to the housing 73, and the second end of the generator shaft 71, opposite to the first end, is connected to the rotor shaft 46. The end of the rotor shaft 46 closest to the generator shaft 71 has a keyway 465, and the second end of the generator shaft 71 is located in the keyway 465, thus connecting to the rotor shaft 46. This allows the first shaft 71 to rotate with the rotor shaft. Compared to a design where the generator shaft 71 and rotor shaft 46 are a single, integrally formed shaft, the first bearing 11 and the second bearing 12 also bear the weight of the generator shaft 71, reducing the load on the generator shaft 71. Furthermore, the first bearing 11 and the second bearing 12 can also share the axial force and the circumferential force perpendicular to the axial direction on the generator shaft 71 during operation, helping to prevent damage to the generator shaft 71 due to stress and improving its lifespan. Damage to the generator shaft 71 is a serious problem during the operation of the power generation device. The embodiments disclosed herein can greatly reduce the damage to the generator shaft 71, reduce this problem, extend the life of the generator shaft, and improve the reliability of the power generation device operation.

[0116] For example, Figure 8B This is a partial schematic diagram of a power generation device provided in one embodiment of the present disclosure. (See diagram below.) Figure 8B As shown, the generator's shaft 71 and rotor shaft 46 are integrally formed and are on the same shaft to simplify the structure of the power generation device.

[0117] For example, Figure 8C A partial schematic diagram three is provided for a power generation device according to an embodiment of this disclosure. (See diagram three.) Figure 8C As shown, the rotating shaft disk 47 and the rotor disk 41 are integrally formed to simplify the structure of the power generation device.

[0118] like Figures 7A-7B As shown, this embodiment includes a power generation device. Figure 1A-1BThe following describes the operation of the power generation device, using an air turbine as an example. For instance, when the power generation device is in operation, the third opening 23 of the air chamber 2 of the power generation device is placed in seawater. As the liquid level in chamber 2 rises, the gas in chamber 2 is compressed, resulting in a pressure difference between the chamber and atmospheric pressure. The rectifier 32 is configured to move away from the through-hole 35 under the action of the first pressure difference, thereby opening the valve 3 and connecting chamber 2 with the atmosphere. Gas in the atmosphere enters the valve box 30 through the through-hole 35 and then enters chamber 2 through the first opening 21. Simultaneously, gas in the atmosphere enters chamber 2 through the first end of the air guide pipe 1, the valve box 30, and the first opening 21, forming a first airflow. As the liquid level in chamber 2 drops, the gas volume in chamber 2 increases, resulting in a pressure difference between the chamber and atmospheric pressure. The rectifier 32 is configured to seal the through-hole 35 under the action of the second pressure difference, thereby closing the valve 3 and allowing the gas in chamber 2 to enter the atmosphere through the first opening 21, thus generating a second airflow. In other words, the first opening 21 is the only outlet for the gas in chamber 2. The rotating blades of rotor 4 are configured to rotate under the drive of a second airflow, thereby rotating the rotor disk 41. The rotating disk 41 drives the rotor shaft 46 to rotate, and simultaneously, the generator shaft 71 connected to the rotor shaft 46 rotates to generate electricity. Generally, the kinetic energy generated when a wave rises is greater than that generated when the wave is falling. Figures 7A-7B In the embodiment shown, the second airflow is generated by compressing the air in the air chamber 2 when the waves rise. At this time, the energy of the second airflow is relatively large, and higher power generation efficiency can be achieved by using the second airflow to generate electricity.

[0119] The following were conducted in the laboratory: Figure 7A The power generation device shown is tested. During the experiment, water waves are generated, which oscillate within an air chamber to change the air pressure. In this experimental procedure, the wave parameters (wave period, wave height, etc.) refer to the parameters of the water wave. The experimental conditions are as follows: The generator is a 60V AC generator. Three loads—a suitable resistor, a 12V battery, and a 24V battery—are connected to the generator to charge the 12V and 24V batteries respectively. Under different wave heights and periods, the rotor speed of the air turbine varies, thus affecting the generator's output. During the power generation test, under specific wave height and period conditions, the electricity generated by the generator is used as a power source connected to a sliding rheostat. The resistance of the rheostat is adjusted; the resistance at which the maximum power generation is achieved is the suitable resistance.

[0120] The parameters of the regular wave (with fixed wave height and period) include: wave period (the time interval for a wave to travel from one wave crest or trough to the next wave crest or trough) 2.45s, and wave height (the height difference between the wave crest and trough when the liquid surface fluctuates) approximately 150mm. Multiple tests were conducted under each condition, and the test data are shown in Table 1.

[0121] The power generation efficiency is defined as the ratio between the power generated by the generator and the wave power acting on the wave energy absorption device.

[0122] Table 1. Experimental data under regular wave conditions.

[0123]

[0124]

[0125] The results in Table 1 show that the overall power generation efficiency is high, all above 20%, and even reaching over 30%. The highest power generation efficiency, reaching 34.02%, is achieved when a suitable resistor is connected. The power generation efficiency is also high when charging a 12V battery. Therefore, a 12V battery was selected for the experiment, and the power generation results under different cycles are shown in Table 2.

[0126] Table 2. Experimental data under regular wave conditions.

[0127]

[0128] The results in Table 2 show that under the above conditions, the power generation efficiency is above 20%, and even reaches above 30%. The overall power generation efficiency is relatively high in unidirectional airflow power generation devices. The power generation efficiency is the highest, reaching 33.19%, when the wave period is around 2.45 seconds.

[0129] Compared to regular waves, irregular waves are closer to actual ocean wave conditions. To investigate the power generation efficiency under irregular wave conditions (wave height is not a fixed value), an experiment was conducted under irregular wave conditions with a wave period of 2.55s and a wave height of about 200mm. The power generation test results are shown in Table 3.

[0130] Table 3. Experimental data under irregular wave conditions.

[0131] Electric power W Wave heightmm Wave period s Wave power W efficiency% 7.09 172.4 2.557 45.57 11.67 9.48 178.0 2.562 53.68 15.56 10.39 186.5 2.549 55.90 17.66 11.3 189.5 2.556 57.43 18.59 22.65 245.8 2.549 104.76 19.68 21.1 250.4 2.546 112.60 21.62 20.97 254.6 2.550 112.51 18.74

[0132] The results in Table 3 show that under the above irregular wave conditions, the power generation efficiency is mostly around 20%. In the unidirectional airflow power generation device, the overall power generation efficiency is relatively high under irregular wave conditions; the power generation efficiency is the highest, reaching 21.62%, when the wave height is 250.4 mm.

[0133] Figures 9A-9C for Figure 7B A schematic diagram of the generator mounting base for the power generation device. For example, combined with... Figure 7B and Figures 9A-9C The power generation unit also includes a generator mounting base 9 and a generator protective cover 75. The generator is mounted on the generator mounting base 9; as Figure 9A and 9BAs shown, the first mounting base 9 has a generator mounting groove 92 and a generator shaft through hole at its center. The generator is installed in the generator mounting groove 92, for example, the generator shaft 71 is located in the generator mounting groove 92; the generator shaft 71 passes through the generator shaft through hole and enters the air duct 1. Figure 9B The first side of the generator mounting bracket 9 is shown. Figure 9C The diagram shows the second side of the generator mounting base 9, opposite to its first side. This second side is provided with a second bearing housing 94, on which the second bearing is mounted. The generator mounting base 9 is fixedly connected to the first end of the first air duct 1, such as by welding or bolting. Figure 9A In the illustrated embodiment, the first mounting base 9 is equivalent to a flange, and the connection between the generator's first mounting base 9 and the first air duct 1 is a flange connection. Those skilled in the art can refer to conventional techniques for specific connection methods, and this embodiment does not limit this. A generator protective cover 75 covers the generator body 73 and is mounted on the generator mounting base 9. The generator mounting base 9 and the generator protective cover 75 are sealed together to seal the generator in a space, preventing corrosion from rainwater, seawater, fog, etc. The generator mounting base 9 has an air hole 91. Gas in the air duct 1 is discharged through the air hole 91, or gas from the atmosphere enters the air duct 1 through the air hole 91, and then enters the air chamber 2. The air hole 91 is located on the outside of the generator protective cover, so that the gas can pass through the air hole 91, ensuring that gas in the air duct can be discharged smoothly or that gas from the atmosphere can enter the air duct and then the air chamber, while preventing rainwater and seawater from entering the air duct.

[0134] For example, combining Figure 7B and Figure 10 The power generation unit also includes a protective structure 13, located on the side of the generator protective cover away from the rotor 4, and includes a protective cap mounting base 131, a protective cap 132, and a protective cap bracket 133. The protective cap mounting base 131 is connected to the generator mounting base 9; for example, the protective cap mounting base 131 is a flange, and the connection between the protective cap mounting base 131 and the generator mounting base 9 is a flange connection. The protective cap 132 covers the generator mounting base 9 and the protective cap mounting base 131. The orthographic projection of the generator mounting base 9 on a plane parallel to the protective cap mounting base 131 facing the protective cap, and the orthographic projection of the protective cap mounting base 131 on the same plane, are both located within the orthographic projection of the protective cap 132 on the same plane, to prevent rainwater and seawater from entering the vent pipe 1. The protective cap bracket 133 connects the protective cap 132 to the protective cap mounting base 131 to mount the protective cap 132 onto the protective cap mounting base 131.

[0135] The power generation device provided in this disclosure includes other types of air ventilation provided in this disclosure. The working process of the power generation device is similar to... Figures 7A-7B The power generation device shown has a similar working process and technical effect. Figure 11A This is a schematic diagram of another power generation device provided in an embodiment of the present disclosure. The power generation device includes... Figure 5 The air turbine shown; Figure 11B This is a schematic diagram of another power generation device provided in an embodiment of the present disclosure. The power generation device includes... Figure 6 The air turbine shown. Figure 11A and Figure 11B The structure of the power generation device shown, including the air duct 1, generator, rotor, stator, etc., is similar to... Figure 7B The same as in the previous section, the protective structure 13 and other bonding structures are also the same. Figure 7B For the same information, please refer to the previous description. For example, refer to the embodiments concerning air turbines for the working processes of various air turbines and the above. Figures 7A-7B The operation of the power generation device shown is the same as the operation of various generators provided in the embodiments of this disclosure.

[0136] For example, some embodiments of this disclosure provide an air turbine that may include multiple air valves, or multiple air ducts and multiple rotors, with each rotor corresponding to one of the multiple air ducts. For example, an air turbine may include multiple air valves and multiple air ducts, with each air valve corresponding to one of the multiple air ducts. Exemplarily, Figure 11C This is a schematic diagram of another power generation device provided in an embodiment of the present disclosure. The air turbine of this power generation device includes multiple air valves, namely a first air valve 3 and a second air valve 3'. The air chamber also includes a fourth opening 24, and the second air valve 3' is connected to the fourth opening 24. The structure of the second air valve 3' is the same as that of the first air valve 3, as described in the previous embodiments. A first airflow can simultaneously enter the air chamber 2 via the first air valve 3 and the second air valve 3'. Compared to the case of setting only one air valve, this increases the gas flow rate, thereby improving power generation efficiency.

[0137] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1. An air turbine, comprising: An air chamber includes a first opening communicating with the atmosphere, wherein the air pressure inside the air chamber is adjustable, and the difference between the air pressure inside the air chamber and the atmospheric pressure includes a first pressure difference and a second pressure difference. An air valve, connected to the air chamber and configured to open under the action of a first air pressure difference to allow the air chamber to communicate with the atmosphere through the air valve and the first opening to form a first airflow, and to close under the action of a second air pressure difference to allow the air chamber to communicate with the atmosphere through the first opening to form a second airflow, wherein the first air pressure difference and the second air pressure difference are in opposite directions; and The rotor is configured to rotate under the drive of the second airflow. The air turbine further includes an air guide tube, which has a first end and a second end. The first end of the air guide tube is located on the side of the second end of the air guide tube away from the air chamber. The rotor is located in the air guide tube and at the first end of the air guide tube. The first end of the air guide tube is open to the atmosphere. The air turbine further includes a valve box, the valve box comprising: a first end having a first opening connected to a second end of the air guide pipe to communicate the valve box with the air guide pipe; a second end opposite to the first end and having a second opening, wherein the second opening is connected to a first opening of the air chamber to communicate the valve box with the air chamber; and a sidewall located between the first end and the second end of the valve box and including a valve plate, the air valve including the valve plate and a flow straightener disposed on the valve plate. The air valve is located between the air guide pipe and the air chamber, and the radial dimension of the air guide pipe is smaller than the radial dimension of the valve box. The rotor includes a turntable, the turntable having a first shaft hole and a second shaft hole that are through each other; the rotor also includes a rotor shaft, a turntable, a first bearing, and a second bearing. The rotor shaft is installed in the first shaft hole and includes a first end and a second end opposite to the first end. The first end of the rotor shaft is located on a first side of the turntable near the stator, and the second end of the rotor shaft is located on a second side of the turntable away from the stator. The turntable is fixedly connected to the rotor shaft, located in the second shaft hole, connected to the turntable of the rotor, and configured to rotate under the drive of the turntable of the rotor when the turntable of the rotor rotates; the first bearing is sleeved on the rotor shaft and located on the side of the turntable near the first end of the rotor shaft; the second bearing is sleeved on the rotor shaft and located on the side of the turntable near the second end of the rotor shaft.

2. The air turbine according to claim 1, wherein, The valve plate is fixed between the air chamber and the atmosphere, and includes a first plate surface and a second plate surface opposite to the first plate surface. The first plate surface faces the direction of the first airflow entering the air chamber through the air valve. The valve plate has a through hole that runs through the valve plate in the direction from the first plate surface to the second plate surface. The rectifier is disposed on the second plate surface of the valve plate. When the air pressure in the air chamber is less than atmospheric pressure, the first air pressure difference is generated. The rectifier is configured to move away from the through hole under the action of the first air pressure difference to open the air valve. When the air pressure in the air chamber is greater than atmospheric pressure, the second air pressure difference is generated. The rectifier is configured to seal the through hole under the action of the second air pressure difference to close the air valve.

3. The air turbine according to claim 1, wherein, The valve box includes a plurality of sidewalls connected to each other, each of the plurality of sidewalls including the valve plate. The air guide tube includes multiple sections connected to each other by flanges, and the multiple sections have the same radial dimension. The rotor is disposed in a first section of the multiple sections away from the air chamber, and a second section of the multiple sections near the air chamber is configured to accommodate at least a portion of the stator.

4. The air turbine according to claim 2, wherein, The first plate faces the atmosphere; the air pressure in the air chamber is greater than the atmospheric pressure to form the second air pressure difference, and the gas in the air chamber enters the atmosphere after flowing through the rotor to form the second airflow; the air pressure in the air chamber is less than the atmospheric pressure to form the first air pressure difference, and the gas in the atmosphere enters the air chamber through the air valve and the first end of the air guide pipe to form the first airflow.

5. The air turbine according to claim 2, wherein, The rectifier segment comprises a first part and a second part connected to each other, wherein... The first portion is at least partially fixed to the valve plate, and the second portion is configured to leave the through hole under the action of the first air pressure difference and close the through hole under the action of the second air pressure difference.

6. The air turbine according to claim 5, wherein, The air guide pipe is a straight pipe that extends from the first opening of the air chamber to the rotor; The direction from the first part of the rectifier to the second part of the rectifier is parallel to the extension direction of the air duct.

7. The air turbine according to claim 5, wherein, The first part and the second part are integrally formed, or, The first part is connected to the second part via a connector.

8. The air turbine according to claim 2, wherein, The rectifier is made of metal and has a thickness of 1mm-3mm along the direction from the first plate surface to the second plate surface; or, the rectifier is made of rubber or silicone and has a thickness of 1mm-5mm.

9. The air turbine according to claim 2, wherein, The valve plate also includes: A support frame, located in the through hole, includes at least one pair of opposing ends, each of which is connected to the inner wall of the through hole, and the support frame divides the through hole into a plurality of non-communicating portions.

10. The air turbine according to claim 9, wherein, The support frame is cross-shaped or star-shaped.

11. The air turbine according to claim 1 or 2, wherein, The valve plate has a plurality of the through holes; Each of the plurality of through holes is provided with a rectifier plate, or n adjacent through holes in the plurality of through holes share a rectifier plate, where n is a positive integer greater than or equal to 2.

12. The air turbine according to claim 1 or 2, wherein, The rotor further includes: a plurality of rotating blades disposed around the edge of the turntable, wherein each of the plurality of rotating blades includes a first surface configured to receive the second airflow, and the plurality of rotating blades are configured to rotate under the action of the second airflow to drive the turntable to rotate; At least a portion of the first surface of each of the plurality of rotating blades faces the direction of the second airflow.

13. The air turbine according to claim 12, wherein, The rotor also includes: A first surrounding band surrounds and is connected to the plurality of rotating blades, wherein the first surrounding band is a closed loop in the direction surrounding the plurality of rotating blades; The width of the first shroud in the axial direction of the rotor is greater than or equal to the thickness of the turntable in the axial direction of the rotor, and the axial direction of the rotor is perpendicular to the surface of the turntable.

14. The air turbine according to claim 12, further comprising: A stator, located on one side of the rotor, configured such that the second airflow passes through the stator and then through the rotor, and includes: The roulette wheel includes a central region and an edge region surrounding the central region; Multiple guide vanes are located in the edge region, arranged around the central region, and configured to guide the second airflow to the rotor.

15. The air turbine according to claim 1, wherein, The rotor shaft and the rotor disk are made of steel, while the parts of the rotor other than the rotor shaft and the rotor disk are made of organic materials.

16. The air turbine according to claim 14, wherein, The stator also includes: A guide cone is located on the side of the stator's disk away from the rotor, wherein the guide cone includes a first end and a second end opposite to each other in a first direction from the stator to the rotor; The first end of the guide cone is connected to the central region of the stator's disk. From the second end of the guide cone to the first end, the cross-sectional dimension of at least a portion of the guide cone gradually increases in a second direction, which is perpendicular to the first direction.

17. The air turbine according to claim 16, wherein, The at least portion of the flow guide cone is conical, or the at least portion of the flow guide cone is part of a sphere.

18. The air turbine according to claim 16, wherein, The stator also includes: A second enclosure surrounds and connects to the plurality of guide vanes, and is fixedly connected to the inner wall of the air duct to fix the stator to the air duct, wherein the second enclosure is closed in the direction surrounding the plurality of guide vanes.

19. The air turbine according to claim 18, wherein, The guide cone, the stator's wheel, the second shroud, and the plurality of guide vanes are integrally formed.

20. A power generation device comprising an air turbine and a generator according to any one of claims 1-19, the generator comprising a shaft connected to and configured to rotate under the drive of the rotor.

21. The power generation device according to claim 20, wherein, The air chamber further includes a third opening configured to allow liquid to enter the air chamber through the third opening, and the liquid level fluctuates to make the air pressure in the air chamber adjustable. The first opening is located on the upper side of the air chamber near the rotor, and the third opening is located on the lower side of the air chamber away from the rotor.

22. The power generation device according to claim 20, wherein, The generator also includes a housing located on the side of the rotor away from the air chamber; When the rotor includes a rotor shaft, the first end of the generator shaft is connected to the machine body, and the second end of the generator shaft opposite to the first end is connected to the rotor shaft.

23. The power generation device according to claim 22, wherein, The rotor shaft includes a first end near the generator; A bonding groove is provided on the surface of the first end of the rotor shaft facing the generator, and the second end of the generator shaft is located in the bonding groove.

24. The power generation device according to any one of claims 20-23, further comprising: A generator mounting base, wherein the generator is mounted on the generator mounting base; when the air turbine includes an air duct, the rotor is located in the air duct, the air duct includes a first end and a second end, the first end of the air duct is in communication with the atmosphere, and the second end of the air duct is connected to a first opening of the valve box to communicate the air duct with the valve box; the generator mounting base has an air hole connected to the first end of the air duct and configured such that gas in the air chamber is discharged through the air hole or gas in the atmosphere enters the air chamber through the air hole; and A generator protective cover covers the generator body and is mounted on the generator mounting base, wherein the generator mounting base is sealed to the generator protective cover, and the vent is located on the outside of the generator protective cover.

25. The power generation device according to claim 24, further comprising: A protective structure, located on the side of the generator protective cover away from the rotor, includes: A protective cap mounting bracket is connected to the generator mounting bracket; A protective cap covers the generator mounting base and the protective cap mounting base, wherein the orthographic projection of the generator mounting base on a plane parallel to the surface of the protective cap mounting base facing the protective cap and the orthographic projection of the protective cap mounting base on the same plane are both located within the orthographic projection of the protective cap on the same plane. A protective cap bracket connects the protective cap to the protective cap mounting base to mount the protective cap onto the protective cap mounting base.

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