Pneumatic turbine structure

Abstract

The invention discloses a pneumatic turbine structure which comprises a rotating body and an air injection device. The rotating body is provided with an inner cavity. The air injection device is arranged in the inner cavity, the inner cavity is provided with a plurality of tooth parts around the rotating axis of the rotating body and around the air injection device, the roots of all the tooth parts are connected with the rotating body to form an inner tooth turbine structure, and the air injection device is used for injecting air flow to the surfaces of the tooth parts to drive the rotating body to rotate. According to the pneumatic turbine structure, the structure is more compact, the lightweight design requirement of a product is met, the power loss of airflow can be reduced, and the torque output efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pneumatic devices, and in particular to a pneumatic turbine structure. Background Art

[0002] Traditional aerodynamic turbines, such as radial or axial-flow turbines, feature an internal rotor, with the jet mechanism positioned around the rotor. The blades on the rotor are positioned on the outer periphery of the rotor, forming an external gear structure. However, this external gear structure results in a large overall size, which is not conducive to lightweight design requirements. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an aerodynamic turbine structure, which is more compact and is conducive to the lightweight design requirements of the product.

[0004] According to an embodiment of the present invention, the pneumatic turbine structure includes a rotating body and a jet device, wherein the rotating body has an inner cavity; the jet device is arranged in the inner cavity, and the inner cavity is arranged with a plurality of teeth around the rotation axis of the rotating body around the jet device, and the roots of all the teeth are connected to the rotating body to form an internal tooth turbine structure, and the jet device is used to spray airflow onto the surface of the teeth to drive the rotating body to rotate.

[0005] The pneumatic turbine structure according to the embodiment of the present invention has at least the following beneficial effects: by arranging the jet device in the inner cavity of the rotating body and arranging the tooth portion on the inner side of the rotating body to form an internal tooth turbine structure, the jet device can be eliminated from occupying the space outside the rotating body, so that under the same rotating body size specifications, the overall external dimensions of the pneumatic turbine structure are smaller and the structure is more compact, which is conducive to the lightweight design requirements of the product.

[0006] According to some embodiments of the present invention, a projection of the tooth portion in a direction along the rotation axis of the rotating body is in a volute shape.

[0007] According to some embodiments of the present invention, the tooth portion is a straight tooth, a helical tooth or an arc tooth.

[0008] According to some embodiments of the present invention, the jetting direction of the jetting device is adapted to the rotation direction of the tooth portion, and the jetting direction of the jetting device is tilted relative to the radial direction of the rotating body.

[0009] According to some embodiments of the present invention, the tooth portion has an air guide surface and an actuating surface facing away from each other, and the air guide surface is adapted to the jet direction of the jet device, wherein, among two adjacent tooth portions, the air guide surface of one tooth portion is connected to the actuating surface of the other tooth portion.

[0010] According to some embodiments of the present invention, the tooth portion is provided with an exhaust channel on one side or both sides along the rotation axis of the rotating body, and the exhaust channel is communicated with the inner cavity.

[0011] According to some embodiments of the present invention, a mounting body is further included, and the rotating body is rotatably sleeved on the mounting body, wherein one end of the mounting body is penetrated through the bottom wall of the inner cavity, and the jet device is installed on the mounting body, and the mounting body is provided with a boss opposite to the rotating body, and the gap between the boss and the rotating body forms an exhaust channel connected to the inner cavity, and the gap between one end of the mounting body and the bottom wall of the inner cavity, and the gap between the bottom wall of the inner cavity and the jet device are connected to form an exhaust channel.

[0012] According to some embodiments of the present invention, the jet device is provided with an air inlet channel and at least two jet channels communicating with the air inlet channel, and the jet channels are used to jet airflow toward the tooth portion.

[0013] According to some embodiments of the present invention, the air intake passage is provided with a filter.

[0014] According to some embodiments of the present invention, the pneumatic turbine structure further includes a housing, and the rotating body is rotatably mounted inside the housing via a bearing.

[0015] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0017] Figure 1 is a schematic radial cross-sectional view of an aerodynamic turbine structure according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of a rotating body of an aerodynamic turbine structure is shown;

[0019] Figure 3 for Figure 1 A schematic diagram of an air jet device of an aerodynamic turbine structure is shown;

[0020] Figure 4 Schematic diagram of an axial cross-section of the pneumatic turbine structure (when provided with a mounting body) according to an embodiment of the present invention;

[0021] Figure 5 Schematic diagram of an axial cross-section of the pneumatic turbine structure (when provided with a housing) according to an embodiment of the present invention.

[0022] Reference numerals:

[0023] Rotating body 100, inner cavity 110, tooth portion 111, air guide surface 111a, actuating surface 111b, jet device 200, air inlet channel 210, jet channel 220, filter element 300, mounting body 400, boss 410, air supply channel 420, exhaust channel 500, outer casing 600, sliding seat 610, bearing 700, first dynamic sealing structure 810, and second dynamic sealing structure 820. DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0026] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference Figures 1 to 3 According to an embodiment of the present invention, the pneumatic turbine structure includes a rotating body 100 and an injection device 200. The rotating body 100 has an inner cavity 110; the injection device 200 is arranged in the inner cavity 110, wherein the inner cavity 110 is arranged with a plurality of teeth 111 around the injection device 200 around the rotation axis of the rotating body 100, and the roots of all the teeth 111 are connected to the rotating body 100 to form an internal gear turbine structure. The injection device 200 is used to spray airflow onto the surface of the tooth 111 to drive the rotating body 100 to rotate.

[0029] By arranging the jet device 200 in the inner cavity 110 of the rotating body 100 and arranging the tooth portion 111 on the inner side of the rotating body 100 to form an internal tooth turbine structure, the jet device 200 can be eliminated from occupying the space outside the rotating body 100, so that under the same size specifications of the rotating body 100, the overall outer dimensions of the aerodynamic turbine structure are smaller and the structure is more compact, which is conducive to the lightweight design requirements of the product. In addition, the tooth portion 111 is arranged in the inner cavity 110 of the rotating body 100, so that the tooth portion 111 can directly utilize the high-speed rotating airflow ejected by the jet device 200 in the inner cavity 110, eliminating the need to set a guide structure on the outside of the rotating body 100, reducing the power loss of the airflow, and improving the torque output efficiency.

[0030] Reference Figure 1 and Figure 2 According to some embodiments of the present invention, the projection of the tooth portion 111 in the direction along the rotation axis of the rotating body 100 is in a vortex shape. As a result, the end of the tooth portion 111 close to the jet device 200 is small in size and the root of the tooth portion 111 is large in size. The tooth portion 111 is stronger, can withstand greater jet pressure, and has a longer service life.

[0031] Reference Figure 1 and Figure 2 According to some embodiments of the present invention, the tooth portion 111 is a straight tooth, that is, the tooth portion 111 extends in a straight line along the rotation axis of the rotating body 100. With the above arrangement, the tooth portion 111 has a simple structure and is easy to produce using a mold.

[0032] like Figure 1 As shown, according to some embodiments of the present invention, the tooth portion 111 and the rotating body 100 can be integrally formed, thereby further reducing production costs. Figure 1 The dotted line in the circle is shown.

[0033] It should be noted that, in other embodiments, the tooth portion 111 and the rotating body 100 may be produced separately and then assembled, and the assembly may be performed by means of bolts, clamping, plugging, etc.

[0034] According to other embodiments of the present invention, the tooth portion 111 may also be configured as a helical tooth or an arc tooth, and the specific shape may refer to the helical tooth or arc tooth structure of a gear.

[0035] Reference Figure 1 、 Figure 3 and Figure 4According to some embodiments of the present invention, the jet device 200 is provided with an air inlet channel 210 and at least two jet channels 220 communicating with the air inlet channel 210. The jet channels 220 are used to inject airflow toward the tooth portion 111. With this configuration, the jet device 200 can include a main body, in which all of the air inlet channels 210 and all of the jet channels 220 are integrated. The outer periphery of the main body can be configured as a circle. As a result, the jet device 200 has a lower production cost and is more convenient to install.

[0036] Reference Figure 4 According to some embodiments of the present invention, the air inlet passage 210 is provided with a filter 300 . Thus, the filter 300 can filter the airflow entering the air inlet passage 210 , thereby preventing impurities in the airflow from clogging the jet device 200 .

[0037] Reference Figure 1 According to some embodiments of the present invention, the jetting direction of the jet device 200 is adapted to the rotation direction of the tooth portion 111, thereby ensuring that the airflow ejected by the jet device 200 can drive the rotating body 100 to rotate after hitting the tooth portion 111.

[0038] Reference Figure 1 According to some embodiments of the present invention, the jet direction of the jet device 200 is tilted relative to the radial direction of the rotating body 100 to optimize the airflow direction, reduce the power loss of the airflow, and improve the torque output efficiency of the aerodynamic turbine structure.

[0039] Specifically, if Figure 1 As shown, a certain radial direction of the rotating body 100 (ie Figure 1 The direction represented by the horizontal center line is perpendicular to the line from the center of the rotating body 100 to the point where the jet channel 220 is connected to the air inlet channel 210. The jet channel 220 is inclined relative to the radial direction, and the inclination angle α between the jet direction of the jet channel 220 and the radial direction is 5-30°.

[0040] Reference Figure 1 and Figure 2 According to some embodiments of the present invention, the tooth portion 111 has an air guide surface 111a and an actuating surface 111b that face away from each other, and the air guide surface 111a is adapted to the jet direction of the jet device 200. Among them, among two adjacent tooth portions 111, the air guide surface 111a of one tooth portion 111 is connected to the actuating surface 111b of the other tooth portion 111. Thus, the air guide surface 111a of one tooth portion 111 can guide the airflow ejected from the jet device 200 to the actuating surface 111b of the other tooth portion 111, thereby optimizing the flow path of the airflow, thereby further improving the torque output efficiency of the aerodynamic turbine structure.

[0041] Reference Figure 1 and Figure 2 In some embodiments, the projection of the actuating surface 111b in the direction along the rotation axis of the rotating body 100 is arc-shaped, so that the actuating surface 111b can more effectively receive the power of the airflow, increase the torque output of the pneumatic turbine structure, and further improve the torque output efficiency of the pneumatic turbine structure.

[0042] Reference Figure 1 and Figure 2 In a specific implementation, in order to ensure that the air guide surface 111a is adapted to the jet direction of the jet device 200, the air guide surfaces 111a of all the tooth portions 111 are distributed in a vortex shape. The air guide surfaces 111a face the jet device 200 and can be arranged along the jet direction of the jet device 200. When a jet channel 220 of the jet device 200 ejects air toward a certain air guide surface 111a, the angle between the jet direction of the jet channel 220 and the air guide surface 111a is less than 30°, thereby reducing the airflow power loss caused by the air guide surface 111a.

[0043] It should be noted that, in other embodiments, the teeth 111 may also be configured as blades, that is, the teeth 111 are configured as arc-shaped blades, and all blades are distributed in a vortex shape.

[0044] Reference Figure 4 According to some embodiments of the present invention, the tooth portion 111 is provided with an exhaust channel 500 on one side or both sides along the rotation axis of the rotating body 100, and the exhaust channel 500 is connected to the inner cavity 110. By setting the exhaust channel 500 of the rotating body 100 on the outside of the tooth portion 111, the airflow ejected by the jet device 200 will not be directly discharged from between two adjacent tooth portions 111 after acting on the tooth portion 111, and thus the tooth portion 111 can receive more power from the airflow, thereby improving the work efficiency.

[0045] Reference Figure 4 and Figure 5According to some embodiments of the present invention, the aerodynamic turbine structure further includes a mounting body 400, and the rotating body 100 is rotatably sleeved on the mounting body 400, wherein one end of the mounting body 400 is penetrated through the bottom wall of the inner cavity 110, and the jet device 200 is installed on the mounting body 400, and the mounting body 400 is provided with a boss 410 opposite to the rotating body 100, and the gap between the boss 410 and the rotating body 100 forms an exhaust channel 500 connected to the inner cavity 110, and the gap between one end of the mounting body 400 and the bottom wall of the inner cavity 110, and the gap between the bottom wall of the inner cavity 110 and the jet device 200 are connected to form the exhaust channel 500. With the above arrangement, when the two exhaust channels 500 discharge airflow, the rotating body 100 and the mounting body 400 can be separated by the airflow, and when the jet device 200 sprays airflow toward the tooth portion 111, the rotating body 100 and the jet device 200 can also be separated by the airflow. In this way, the rotating body 100 is suspended relative to the mounting body 400 and the jet device 200, the friction encountered by the rotating body 100 during rotation is reduced, the noise and wear of the rotating body 100 during rotation are reduced, and high-speed rotation of the rotating body 100 is achieved.

[0046] According to some embodiments of the present invention, the air inlet of the air inlet channel 210 is annular, and the filter element 300 is arranged at the air inlet of the air inlet channel 210. With the above arrangement, the filter element 300 is more convenient to disassemble and assemble, and the air inlet channel 210 can more evenly deliver airflow to each jet channel 220.

[0047] During the specific implementation process, an air supply channel 420 is provided on the mounting body 400, and the outlet of the air supply channel 420 is located on the side surface of the boss 410 facing the jet device 200. The outlet of the air supply channel 420 is annular, and the air inlet of the air intake channel 210 is provided on the side surface of the jet device 200 facing the boss 410, wherein the outlet of the air supply channel 420 is connected to the air inlet of the air intake channel 210, and the jet device 200 is fitted and sealed with the boss 410.

[0048] It is conceivable that the pneumatic turbine structure can be set as a multi-stage pneumatic turbine. In this case, more than two rotating bodies 100 are set along the axis, and the jet device 200 can be correspondingly set with more than two layers of jet channels 220, or more than two jet devices 200 are correspondingly set.

[0049] Reference Figure 5According to some embodiments of the present invention, the pneumatic turbine structure may further include a housing 600, wherein the mounting body 400 is mounted within the housing 600, and the rotating body 100 is rotatably mounted within the housing 600 via a bearing 700. The gap between the housing 600 and the rotating body 100 is connected to the exhaust passage 500 between the boss 410 and the rotating body 100, so that exhaust is discharged through the gap between the housing 600 and the rotating body 100. Thus, the housing 600 can protect the rotating body 100, the bearing 700, and other components within it.

[0050] Reference Figure 5 In some embodiments, a first dynamic sealing structure is provided between the rotating body 100 and the outer shell 600. When the jet device 200 drives the rotating body 100 to rotate, the first dynamic sealing structure opens the gap between the rotating body 100 and the outer shell 600. When the jet device 200 stops driving the rotating body 100 to rotate, the first dynamic sealing structure closes the gap between the rotating body 100 and the outer shell 600, thereby preventing external dust from entering the gap between the rotating body 100 and the outer shell 600, so as to prevent dust from affecting the normal operation of components such as the bearing 700 and the rotating body 100.

[0051] Reference Figure 4 and Figure 5 It is conceivable that, in some embodiments, the gap between one end of the mounting body 400 and the bottom wall of the inner cavity 110 may also be configured with a second dynamic sealing structure 820. When the jet device 200 drives the rotating body 100 to rotate, the second dynamic sealing structure 820 opens the gap between one end of the mounting body 400 and the bottom wall of the inner cavity 110 to allow exhaust. When the jet device 200 stops driving the rotating body 100 to rotate, the second dynamic sealing structure 820 closes the gap between one end of the mounting body 400 and the bottom wall of the inner cavity 110, thereby preventing external dust from entering the gap between one end of the mounting body 400 and the bottom wall of the inner cavity 110.

[0052] The second dynamic sealing structure 820 may be configured as a movable sealing structure, at least a portion of which may be movable to open or close a corresponding gap.

[0053] Reference Figure 4 and Figure 5 , the rotating body 100 can be configured as a movable component. In this case, a sliding seat 610 is slidably mounted within the housing 600, and the rotating body 100 is rotatably mounted on the sliding seat 610 via a bearing 700. Thus, the rotating body 100 can be moved along the rotation axis to drive a portion of the movable sealing structure. Of course, in other embodiments, a portion of the movable sealing structure can also be configured as an independent movable component. In specific implementations, the movable component can be driven by an external drive, airflow, or other means.

[0054] It is conceivable that, in other embodiments, the second dynamic sealing structure 820 may also be configured as an airbag sealing structure, which may expand or contract by inflating or deflating air, thereby closing or opening the corresponding gap.

[0055] The first dynamic sealing structure may refer to the configuration of the second dynamic sealing structure 820 , and the specific configuration will not be described in detail here.

[0056] It should be noted that when the pneumatic turbine structure is not provided with a mounting body 400 and a housing 600, a limiting structure may be provided between the jet device 200 and the rotating body 100 to prevent the jet device 200 from separating from the rotating body 100; when the pneumatic turbine structure is provided with a mounting body 400 but not provided with a housing 600, a limiting structure may be provided between the mounting body 400 and the rotating body 100 to prevent the jet device 200 from separating from the rotating body 100. The limiting structure may be provided in more than one manner. For example, the limiting structure may be provided as a bearing 700, or the limiting structure may include an annular limiting protrusion.

[0057] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the scope of the present invention.

Claims

1. A pneumatic turbine structure, characterized in that: include: A rotating body (100) having an inner cavity (110); An air injection device (200) is disposed in the inner cavity (110); The inner cavity (110) is provided with a plurality of teeth (111) around the rotation axis of the rotating body (100) and around the jet device (200), and the roots of all the teeth (111) are connected to the rotating body (100) to form an internal gear turbine structure, and the jet device (200) is used to spray airflow onto the surface of the teeth (111) to drive the rotating body (100) to rotate.

2. The pneumatic turbine structure according to claim 1, characterized in that: The projection of the tooth portion (111) in the direction along the rotation axis of the rotating body (100) is in a volute shape.

3. The pneumatic turbine structure according to claim 2, characterized in that: The tooth portion (111) is a straight tooth, a helical tooth or an arc tooth.

4. The pneumatic turbine structure according to claim 1, characterized in that: The jetting direction of the jetting device (200) is adapted to the rotation direction of the tooth portion (111), and the jetting direction of the jetting device (200) is tilted relative to the radial direction of the rotating body (100).

5. The pneumatic turbine structure according to claim 1, characterized in that: The tooth portion (111) has a wind guide surface (111a) and an actuating surface (111b) that face away from each other, and the wind guide surface (111a) is adapted to the jetting direction of the jetting device (200). Among two adjacent tooth portions (111), the wind guide surface (111a) of one tooth portion (111) is connected to the actuating surface (111b) of the other tooth portion (111).

6. The pneumatic turbine structure according to claim 1, characterized in that: The tooth portion (111) is provided with an exhaust channel (500) on one side or both sides along the rotation axis of the rotating body (100), and the exhaust channel (500) is communicated with the inner cavity (110).

7. The pneumatic turbine structure according to claim 6, characterized in that: The invention also includes a mounting body (400), wherein the rotating body (100) is rotatably sleeved on the mounting body (400), wherein one end of the mounting body (400) is penetrated through the bottom wall of the inner cavity (110), and the jet device (200) is mounted on the mounting body (400), and the mounting body (400) is provided with a boss (410) opposite to the rotating body (100), and the gap between the boss (410) and the rotating body (100) forms an exhaust channel (500) connected to the inner cavity (110), and the gap between one end of the mounting body (400) and the bottom wall of the inner cavity (110) and the gap between the bottom wall of the inner cavity (110) and the jet device (200) are connected to form the exhaust channel (500).

8. The pneumatic turbine structure according to claim 1, characterized in that: The jet device (200) is provided with an air inlet channel (210) and at least two jet channels (220) communicating with the air inlet channel (210), and the jet channels (220) are used to jet airflow toward the tooth portion (111).

9. The pneumatic turbine structure according to claim 8, characterized in that: The air intake passage (210) is provided with a filter element (300).

10. The pneumatic turbine structure according to claim 1, characterized in that: It also includes a housing (600), and the rotating body (100) is rotatably mounted inside the housing (600) via a bearing.

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