Rotor engine

Abstract

The invention provides a rotor engine. The rotor engine comprises a shell, a main shaft, two main shaft gears, a limiting shaft and two rotor gears, wherein the main shaft is rotatably arranged on the shell in a penetrating mode, and the two main shaft gears, the limiting shaft and the two rotor gears are contained in the shell. The two main shaft gears are sequentially sleeved on the main shaft along the axial direction of the main shaft; the limiting shaft is parallel to the spindle; the two rotor gears are sequentially arranged in the axial direction of the limiting shaft, each rotor gear comprises an outer gear ring and a rotor hinge, the outer gear rings are meshed with the main shaft gear, and working holes are formed in the outer gear rings; the rotor hinge is located in the working hole and connected with the outer gear ring, and the rotor hinge is rotationally arranged on the limiting shaft in a sleeving mode; one part of the rotor hinge extends along the axial direction of the limiting shaft so as to extend into the working hole of the other rotor gear to divide the working hole into four working cavities; the working cavity can drive the rotor gear and the main shaft gear to rotate through the rotor blade by burning and acting, so that friction loss among the main shaft gear, the rotor gear and the shell is effectively avoided, and the sealing performance of the rotor engine is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of engines, and particularly to a rotary engine. Background Art

[0002] In related technologies, a rotary engine is an internal combustion engine that uses a rotating triangular rotor to replace a traditional reciprocating piston. It has a simple structure and has performance such as high rotational speed and smooth rotation.

[0003] The rotary engine includes a housing and a triangular rotor. A rotating cavity is formed in the housing. The triangular rotor is rotatably arranged in the housing. During the use of the rotary engine, the outer peripheral wall of the triangular rotor will squeeze the inner peripheral wall of the rotating cavity, so that the outer peripheral wall of the triangular rotor and the inner peripheral wall of the housing are easily damaged by friction, and the sealing performance is poor. Summary of the Invention

[0004] The purpose of the present application is to provide a rotary engine with good sealing performance.

[0005] To solve the above technical problems, the present application adopts the following technical solutions: According to one aspect of the present application, the present application provides a rotary engine, which includes: a housing, a main shaft, two main shaft gears, a limiting shaft and two rotor gears; a rotating cavity is formed in the housing; the main shaft is rotatably passed through the housing; the two main shaft gears are located in the rotating cavity, and the two main shaft gears are sequentially and fixedly sleeved on the main shaft along the axial direction of the main shaft; in the projection plane perpendicular to the rotation axis of the main shaft, the geometric center projections of the two main shaft gears are located on both sides of the projection of the rotation axis of the main shaft, and the projections of the two main shaft gears are symmetrically arranged with respect to the rotation axis of the main shaft; the limiting shaft is located in the rotating cavity and is limited on the housing, and the axis of the limiting shaft is parallel to the rotation axis of the main shaft; the two rotor gears are sequentially arranged in the rotating cavity along the axial direction of the limiting shaft, the rotor gear includes an outer tooth ring and rotor blades, the outer tooth ring meshes with the main shaft gear, a working hole is formed in the outer tooth ring and penetrates through the rotor gear along the axial direction of the limiting shaft; the rotor blades are located in the working hole and are connected to the outer tooth ring, and the rotor blades are rotatably sleeved on the limiting shaft; a part of the rotor blades extends along the axial direction of the limiting shaft to extend into the working hole of the other rotor gear to separate the working hole; wherein, the two outer tooth rings, the adjacent parts of the two rotor blades and the opposite end walls of the rotating cavity enclose a working cavity for combustion and work.

[0006] In some embodiments, the cross-section of the working hole is circular; in the projection plane perpendicular to the axis of the limiting shaft, the center projection of the working hole, the geometric center projection of the rotor gear and the center projection of the limiting shaft coincide.

[0007] In some embodiments, the rotor blade includes a sleeve portion, two partition portions, and at least two extension portions. The sleeve portion is rotatably sleeved on the limiting shaft. The two partition portions both extend along the radial direction of the sleeve. The inner ends of the two partition portions are connected to opposite sides of the sleeve. The outer ends of the partition portions are closely attached to and connected to the inner peripheral wall of the outer toothed ring. The extension portions protrude from the partition portions, and the extension portions extend along the axial direction of the limiting shaft toward the adjacent rotor gears. The inner side wall of the extension portion is attached to the outer peripheral wall of the sleeve portion of other rotor gears, the outer side wall of the extension portion is attached to the inner peripheral wall of the working cavity of other rotor gears, and the end face of the extension portion is attached to the end wall of the working cavity.

[0008] In some embodiments, in the circumferential direction of the sleeve portion, the distance between the two side walls at the inner end of the partition portion changes linearly.

[0009] In some embodiments, in the projection plane perpendicular to the axial direction of the limiting shaft, the angle change range between the projections of any two adjacent rotor blades is 60° to 120°.

[0010] In some embodiments, the number of teeth of the rotor gear is twice the number of teeth of the main shaft gear, and the rotor gear is conjugate with the main shaft gear.

[0011] In some embodiments, in the rotation direction of the rotor gear, the housing is sequentially provided with an air inlet hole, an ignition hole, and an exhaust hole around the limiting shaft. The working cavity can sequentially and cyclically communicate with the air inlet hole, the ignition hole, and the exhaust hole during rotation.

[0012] In some embodiments, in the axial direction of the limiting shaft, the size parameter of the outer periphery of the outer toothed ring is less than or equal to the size parameter of the inner periphery of the outer toothed ring.

[0013] In some embodiments, the main shaft gear is an eccentric circular gear or an eccentric non-circular gear; the rotor gear is an elliptical gear or a quasi-elliptical gear conjugate with the main shaft gear; in the plane perpendicular to the axial direction of the limiting shaft, the pitch curve of the rotor gear can be obtained by a numerical solution method according to the conjugate principle from the pitch curve equation of the main shaft gear.

[0014] In some embodiments, first bearings are sleeved on both ends of the main shaft; the housing is provided with a main shaft hole relative to the first bearings, and the first bearings are accommodated in the main shaft hole; and / or, at least two second bearings are sleeved on the limiting shaft relative to the two rotor gears.

[0015] It can be seen from the above technical solutions that the present application has at least the following advantages and positive effects: In this application, when the rotary engine combusts and does work, the four working chambers in the rotary engine do work respectively to drive the rotor blades to rotate around the limiting shaft. During the rotation of the rotor blades, the outer gear ring is driven to rotate around the limiting shaft, and the outer gear ring meshes with the main shaft gear, so that the two rotor gears rotate in the same direction with differential speed under the limitation of the two main shaft gears. The two rotor gears rotate in the same direction with differential speed, so that the two main shaft gears rotate in the same direction and at the same speed around the rotation axis of the main shaft. Driven by the main shaft gears, the main shaft rotates around its own rotation axis, so that the main shaft can apply a driving force externally.

[0016] During the rotation of the main shaft gears and the rotor gears, the rotational pressure on the main shaft gears and the rotor gears is concentrated on the main shaft and the limiting shaft. There is no need to extrude the circumferential side wall of the rotating cavity on the circumferential sides of the main shaft gears and the rotor gears, thus effectively avoiding the frictional loss between the main shaft gears, the rotor gears and the housing, ensuring the sealing performance of the rotary engine, and extending the service life of the rotary engine. Moreover, the contact surfaces between the structures forming the working chamber are plane or cylindrical surfaces, effectively ensuring the sealing between the structures forming the working chamber. Brief Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the rotary engine of the present invention.

[0018] Figure 2 is an exploded schematic structural diagram of the rotary engine of the present invention.

[0019] Figure 3 is an exploded schematic diagram of the housing of the rotary engine of the present invention.

[0020] Figure 4 is a schematic structural diagram of the rotary engine of the present invention after removing the housing.

[0021] Figure 5 is a first schematic structural diagram of the rotary engine of the present invention when it is working.

[0022] Figure 6 is a second schematic structural diagram of the rotary engine of the present invention when it is working.

[0023] Figure 7 is a third schematic structural diagram of the rotary engine of the present invention when it is working.

[0024] Figure 8 is a fourth schematic structural diagram of the rotary engine of the present invention when it is working.

[0025] Figure 9 is a fifth schematic structural diagram of the rotary engine of the present invention when it is working.

[0026] Figure 10 is a sixth schematic structural diagram of the rotary engine of the present invention when it is working.

[0027] Figure 11 It is the seventh structural schematic diagram when the rotary engine of the present invention is working.

[0028] Figure 12 It is the eighth structural schematic diagram when the rotary engine of the present invention is working.

[0029] The description of the reference numerals is as follows: 100, housing; 101, rotating cavity; 110, first protection part; 120, second protection part; 131, intake hole; 132, ignition hole; 133, exhaust hole; 141, main shaft hole; 142, limiting hole; 200, main shaft; 210, first bearing; 300, main shaft gear; 400, limiting shaft; 410, second bearing; 500, rotor gear; 510, outer tooth ring; 511, working hole; 520, rotor blade; 521, sleeve part; 522, separating part; 523, extending part; 531, first working cavity; 532, second working cavity; 533, third working cavity; 534, fourth working cavity. Detailed implementation manners

[0030] Typical implementation manners reflecting the features and advantages of the present application will be described in detail in the following description. It should be understood that the present application can have various variations in different implementation manners, all of which do not depart from the scope of the present application, and the descriptions and illustrations therein are essentially for illustrative purposes and not for limiting the present application.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0032] In the related art, a rotary engine includes a housing and a triangular rotor disposed within the housing. A rotating cavity is formed within the housing. During the combustion and power generation process of the rotary engine, the outer peripheral wall of the triangular rotor will abut and press against the peripheral side wall of the rotating cavity, causing friction between the triangular rotor and the housing. At the same time, due to the extremely high rotational speed of the triangular rotor, the contact area between the triangular rotor and the housing is prone to frictional damage, resulting in poor sealing of the rotary engine, power reduction, and in severe cases, even engine damage.

[0033] Figure 1 is a schematic structural diagram of the rotary engine of the present invention. Figure 2 is an exploded schematic structural diagram of the rotary engine of the present invention.

[0034] Refer to Figure 1 and Figure 2 According to the present application, a rotary engine is provided, which includes: a housing 100, a main shaft 200, two main shaft gears 300, a limiting shaft 400, and two rotor gears 500. A rotating cavity 101 is formed within the housing 100. The main shaft 200 is rotatably disposed through the housing 100. The two main shaft gears 300 are located within the rotating cavity 101. The main shaft gears 300 are fixedly sleeved on the main shaft 200, and the two main shaft gears 300 are arranged in sequence along the axial direction of the main shaft 200. In the projection plane perpendicular to the rotation axis of the main shaft 200, the geometric center projections of the two main shaft gears 300 are located on both sides of the projection of the rotation axis of the main shaft 200, and the projections of the two main shaft gears 300 are symmetrically arranged with respect to the projection of the rotation axis of the main shaft 200. The limiting shaft 400 is located within the rotating cavity 101 and is limited on the housing 100. The axis of the limiting shaft 400 is parallel to the rotation axis of the main shaft 200. The two rotor gears 500 are arranged in sequence along the axial direction of the limiting shaft 400 within the rotating cavity 101. The rotor gear 500 includes an outer tooth ring 510 and rotor blades 520. The outer tooth ring 510 meshes with the main shaft gear 300. A working hole 511 penetrating the rotor gear 500 along the axial direction of the limiting shaft 400 is formed within the outer tooth ring 510. The rotor blades 520 are located within the working hole 511 and are connected to the outer tooth ring 510. The rotor blades 520 are rotatably sleeved on the limiting shaft 400. A part of the rotor blades 520 extends along the axial direction of the limiting shaft 400 to extend into the working hole 511 of another rotor gear 500 to partition the working hole 511. Wherein, the two outer tooth rings 510, the adjacent parts of any two adjacent rotor blades 520, and the opposite end walls of the rotating cavity 101 enclose a working cavity for combustion and power generation.

[0035] When the rotary engine is operating, the main shaft 200 is driven by an external force to drive the two main shaft gears 300 to rotate synchronously. The main shaft gear 300 meshes with the rotor gear 500 to drive the rotor gear 500 to rotate around the limiting shaft 400. During the rotation of the two rotor gears 500, the two rotor blades 520 rotate in the same direction and at different speeds in a cyclic manner around the limiting shaft 400.

[0036] After the rotary engine is started, the four working chambers in the rotary engine perform work respectively to drive the rotor blade 520 to rotate around the limit shaft 400. During the rotation of the rotor blade 520, the outer gear ring 510 is driven to rotate around the limit shaft 400. The outer gear ring 510 meshes with the main shaft gear 300, so that the two rotor gears 500 rotate in the same direction with different speeds under the limitation of the two main shaft gears 300. The two rotor gears 500 rotate in the same direction with different speeds, so that the main shaft gear 300 rotates in the same direction and at the same speed around the rotation axis of the main shaft 200. The main shaft 200 is driven by the main shaft gear 300 to rotate around its own rotation axis, so that the main shaft 200 can apply a driving force externally.

[0037] Moreover, during the rotation of the rotary engine, the working chamber is located inside the rotor gear 500. When the main shaft gear 300 and the rotor gear 500 are stressed and rotate, the rotation pressure is concentrated on the main shaft 200 and the limit shaft 400, effectively preventing the outer peripheral walls of the main shaft gear 300 and the rotor gear 500 from being pressed against the peripheral side wall of the rotation chamber 101, avoiding the frictional damage between the outer peripheral walls of the main shaft gear 300 and the rotor gear 500 and the housing 100, improving the sealing performance of the rotary engine, and extending the service life of the rotary engine. At the same time, the contact surfaces between the various structures forming the working chamber are plane or cylindrical surfaces, effectively ensuring the sealing performance between the various component structures of the working chamber.

[0038] Figure 3 It is an exploded view of the housing of the rotary engine of the present invention.

[0039] Refer to Figures 1 to 3 , in this embodiment, a rotation chamber 101 is formed in the housing 100, and the main shaft gear 300 and the rotor gear 500 are accommodated in the rotation chamber 101, so that the main shaft gear 300 and the rotor gear 500 can rotate and perform work in the rotation chamber 101, thereby driving the main shaft 200 to rotate to apply a driving force externally.

[0040] The inner peripheral wall of the rotation chamber 101 in the housing 100 is spaced from the main shaft gear 300 and the rotor gear 500 to prevent the main shaft gear 300 and the rotor gear 500 from being pressed against the inner peripheral wall of the rotation chamber 101, avoiding frictional damage to the main shaft gear 300, the rotor gear 500 and the housing 100, and extending the service life of the rotary engine.

[0041] In some embodiments, a filler is disposed in the rotating cavity 101. The filler can immerse a part of the main shaft 200, the main shaft gear 300, and the rotor gear 500, so that the filler can lubricate the rotary engine. Moreover, the filler can transfer the heat generated when the combustion chamber performs work through the rotor gear 500 to the housing 100 sufficiently, improving the heat dissipation efficiency of the rotary engine. At the same time, the rotary engine of the present application does not need to use a water jacket with high processing difficulty for heat dissipation, effectively simplifying the heat dissipation structure of the rotary engine and reducing the production cost of the rotary engine.

[0042] In other embodiments, the filler can be a liquid medium with heat transfer and lubrication functions.

[0043] Refer to Figures 1 to 3 , in this embodiment, the housing 100 is divided into a first protection part 110 and a second protection part 120, and the first protection part 110 and the second protection part 120 are respectively arranged along the axial direction of the main shaft 200. The first protection part 110 and the second protection part 120 are detachably connected to facilitate the installation, disassembly, and maintenance of the rotary engine.

[0044] Refer to Figures 1 to 3 , in this embodiment, an air inlet hole 131, a spark plug hole 132, and an exhaust hole 133 are sequentially formed on the housing 100, and the air inlet hole 131, the spark plug hole 132, and the exhaust hole 133 are respectively arranged circumferentially around the limiting shaft 400. During the rotation of the rotary engine, the working cavity can be sequentially and circularly communicated with the air inlet hole 131, the spark plug hole 132, and the exhaust hole 133.

[0045] In some embodiments, in the rotation direction of the rotor gear 500, the air inlet hole 131, the spark plug hole 132, and the exhaust hole 133 are sequentially arranged. The air inlet hole 131 is used to input fuel into the working cavity. After the fuel is input into the working cavity, it is compressed. The working cavity after compressing the fuel rotates to the spark plug hole 132. The spark plug hole 132 ignites the fuel in the working cavity so that the fuel burns and performs work to drive the rotor blade 520 to rotate. When the fuel in the working cavity burns and performs work, the working cavity rotates to the exhaust hole 133 to discharge the waste gas in the working cavity through the exhaust hole 133, facilitating the subsequent cyclic work of the working cavity.

[0046] In some embodiments, the air inlet hole 131, the spark plug hole 132, and the exhaust hole 133 are all arranged on the end walls of the first protection part 110 and / or the second protection part 120 along the axial direction of the limiting shaft 400, so that gas can directly enter and exit the working cavity through the end wall of the first protection part 110.

[0047] Refer to Figures 1 to 3, in this embodiment, within the projection plane perpendicular to the axial direction of the limiting shaft 400, the projection of the ignition hole 132 is close to the side of the projection of the working chamber away from the limiting shaft 400, so as to facilitate the ignition of the fuel, enabling the gas formed after the fuel burns to fully press the rotor blade 520.

[0048] In some embodiments, within the projection plane perpendicular to the axial direction of the limiting shaft 400, the projections of the intake hole 131 and the exhaust hole 133 are arranged close to the middle of the working chamber, so as to facilitate the full diffusion of the fuel in the combustion chamber or the full discharge of the exhaust gas from the combustion chamber. In other embodiments, within the projection plane perpendicular to the axial direction of the limiting shaft 400, the projections of the intake hole 131 and the exhaust hole 133 are close to the side of the projection of the working chamber away from the limiting shaft.

[0049] In other embodiments, the intake hole 131 and the exhaust hole 133 are arranged in an arc shape around the circumference of the limiting shaft 400, so as to extend the passage space of the gas, enabling the fuel gas to fully enter the working chamber or the exhaust gas to fully discharge from the working chamber.

[0050] In other embodiments, within the plane perpendicular to the axial direction of the limiting shaft 400, the length of the exhaust hole 133 in the circumferential direction of the limiting shaft 400 is less than or equal to the length of the rotor blade 520 in the circumferential direction of the limiting shaft 400, and the length of the intake hole 131 in the circumferential direction of the limiting shaft 400 is less than or equal to the length of the rotor blade 520 in the circumferential direction of the limiting shaft 400, so that the projections of the exhaust hole 133 and the intake hole 131 are within the projection range of the rotor blade 520, thereby enabling the rotor blade 520 to fully separate multiple working chambers, avoiding the communication between adjacent two working chambers during intake and exhaust, and ensuring the safety, reliability and stability of the rotary engine.

[0051] In some embodiments, within the projection plane perpendicular to the limiting shaft 400, the included angle between the central projection of the exhaust hole 133 and the central projection of the intake hole 131 to the projection of the rotation axis of the limiting shaft 400 is 60°.

[0052] Figure 4 is a schematic structural diagram of the rotary engine of the present invention after removing the housing.

[0053] Refer to Figures 1 to 4 , in this embodiment, the rotary engine includes a main shaft 200. The main shaft 200 is rotatably disposed on the housing 100. The main shaft 200 can not only receive an external driving force to drive the main shaft gear 300 to rotate around the rotation axis of the main shaft 200, but also apply an external driving force to drive the rotation of an external mechanical structure.

[0054] In some embodiments, first bearings 210 are sleeved on both ends of the main shaft 200. The housing 100 is provided with a main shaft 200 hole 141 relative to the first bearings 210, and the first bearings 210 are accommodated in the main shaft 200 hole 141 to reduce the frictional force when the main shaft 200 rotates relative to the housing 100, and ensure the stability, reliability and safety of the rotary engine.

[0055] In other embodiments, the first bearing 210 can be a cylindrical roller bearing. In other embodiments, the first bearing 210 can be a sealed bearing to prevent dust and other debris from entering the rotating cavity 101 through the main shaft 200 hole 141.

[0056] Refer to Figures 1 to 4 , in this embodiment, the rotary engine further includes two main shaft gears 300. The two main shaft gears 300 are both accommodated in the rotating cavity 101. The two main shaft gears 300 are arranged in sequence along the axial direction of the main shaft 200. In the projection plane perpendicular to the axial direction of the main shaft 200, the geometric center projections of the two main shaft gears 300 are located on both sides of the projection of the rotation axis of the main shaft 200, and the projections of the two main shaft gears 300 are symmetrically arranged relative to the projection of the rotation axis of the main shaft 200, so as to facilitate the meshing of the two main shaft gears 300 with the rotor gear 500 and limit the rotation speed and rotation direction of the rotor gear 500, thereby ensuring the differential rotation of the two rotor gears 500 in the same direction and avoiding the kinetic energy loss caused by the reverse rotation of any two adjacent rotor gears 500.

[0057] In some embodiments, the main shaft gear 300 is an eccentric circular gear. In other embodiments, the main shaft gear can be an eccentric non-circular gear.

[0058] In some embodiments, on the circumferential direction of the main shaft 200, the facing sides of the two main shaft gears 300 can be closely attached to improve the connection strength between the two main shaft gears 300 and the main shaft 200, and ensure the stability and reliability during the rotation of the main shaft 200 and the main shaft gears 300.

[0059] In other embodiments, the two main shaft gears 300 can be arranged at intervals along the axial direction of the main shaft 200 to reduce the thickness of the main shaft gears 300, thereby improving the load-bearing capacity and reliability of the main shaft 200.

[0060] Refer to Figures 1 to 4 , in this embodiment, the connection method between the main shaft gear 300 and the main shaft 200 can include detachable connection methods such as snap connection, key connection, and hydraulic expansion sleeve. In some embodiments, the connection method between the main shaft gear 300 and the main shaft 200 can also include fixed connection methods such as welding.

[0061] Refer to Figures 1 to 4, in this embodiment, the rotary engine includes a limiting shaft 400. The limiting shaft 400 is located in the rotating cavity 101. The axis of the limiting shaft 400 is parallel to the rotation axis of the main shaft 200. The limiting shaft 400 is used to support and limit the two rotor gears 500 to prevent the rotor gears 500 from vibrating and shifting during rotation.

[0062] In some embodiments, the housing 100 is provided with two limiting holes 142 relative to the limiting shaft 400, and the two limiting holes 142 are respectively arranged on the first protection part 110 and the second protection part 120. The two ends of the limiting shaft 400 are respectively limited in the two limiting holes 142. In some other embodiments, a dust cover (not shown in the figure) may be provided on the housing 100 relative to the limiting holes 142.

[0063] In some other embodiments, the limiting shaft 400 is detachably connected to the housing 100 so that the limiting shaft 400 is detachably limited on the housing 100.

[0064] In some other embodiments, after the limiting shaft 400 is connected to the housing 100, the limiting shaft 400 does not need to rotate around its own axis relative to the housing 100, thereby ensuring the stability and reliability of the limiting shaft 400 when the rotor gear 500 rotates.

[0065] Refer to Figures 1 to 4 , in this embodiment, a plurality of second bearings 410 are sleeved on the limiting shaft 400, and the plurality of second bearings 410 are arranged in sequence along the axial direction of the limiting shaft 400. The second bearings 410 are located between the limiting shaft 400 and the rotor gears 500. The plurality of second bearings 410 are respectively arranged corresponding to the two rotor gears 500 to facilitate the rotation of the rotor gears 500 around the limiting shaft 400, prevent the rotor gears 500 from frictionally damaging the limiting shaft 400 during rotation, and ensure the safety and reliability of the rotary engine during rotation.

[0066] In some embodiments, there are two second bearings 410, and the two second bearings 410 are arranged corresponding to the two rotor gears 500 one by one.

[0067] In some embodiments, the second bearing 410 is a cylindrical roller bearing.

[0068] Refer to Figures 1 to 4 , in this embodiment, the rotary engine includes two rotor gears 500. The two rotor gears 500 are rotatably sleeved on the second bearings 410 in sequence along the axial direction of the limiting shaft 400. The opposite sides of the two rotor gears 500 are closely attached, and the outermost two rotor gears 500 are closely attached to the two end walls of the rotating cavity 101 to improve the sealing performance of the working cavity. The two rotor gears 500 are meshed with the two main shaft gears 300 to enable the kinetic energy transfer during fuel combustion and work.

[0069] In some embodiments, the rotor gear 500 is an elliptical gear.

[0070] In other embodiments, factors such as manufacturing tolerances and errors are considered. In a plane perpendicular to the axial direction of the limiting shaft 400, the outer contour of the rotor gear 500 can be approximately elliptical, and the outer contour of the main shaft gear 300 can be approximately circular, so that the main shaft gear 300 can be meshed and conjugated with the rotor gear 500.

[0071] In other embodiments, the main shaft gear 300 can be an eccentric non-circular gear, and the rotor gear 500 can be an approximately elliptical gear conjugated with the main shaft gear 300. In a plane perpendicular to the axial direction of the limiting shaft 400, the pitch curve of the approximately elliptical gear can be obtained by a numerical solution method according to the conjugate principle from the pitch curve equation of the main shaft gear 300. The conjugate principle is that when the pitch curves of two gears in contact rotate through the same arbitrary arc length without sliding and pure rolling, the sum of the polar radii remains unchanged.

[0072] Refer to Figure 2 and Figure 4 , in this embodiment, the rotor gear 500 includes an outer tooth ring 510 and rotor blades 520. The outer tooth ring 510 is sleeved on the limiting shaft 400 and is spaced from the limiting shaft 400. A working hole 511 is provided in the outer tooth ring 510 and axially penetrates through the rotor gear 500 along the limiting shaft 400. The two working holes 511 are communicated in sequence. The two outer tooth rings 510 are closely attached to each other, and the outer end faces of the two outer tooth rings 510 are closely attached to the two end walls of the rotating cavity 101, effectively improving the sealing performance of the working hole 511, thereby ensuring the sealing performance of the working cavity.

[0073] In some embodiments, the cross-section of the working hole 511 is circular, so as to facilitate the rotation of the rotor blade 520 in the working hole 511 of another rotor gear 500, thereby facilitating the expansion or contraction of the volume of the working cavity.

[0074] In some embodiments, in the axial direction of the limiting shaft 400, the dimension parameter of the outer circumference of the outer tooth ring 510 is less than or equal to the dimension parameter of the inner circumference of the outer tooth ring 510, so as to reduce the friction force between the outer tooth ring 510 and the end wall of the rotating cavity 101 while ensuring the structural strength of the outer tooth ring 510, reduce the friction force between any two adjacent outer tooth rings 510, and ensure the stable, reliable and safe operation of the rotor engine.

[0075] Refer to Figure 2 and Figure 4, in this embodiment, the rotor blade 520 is located within the working hole 511 of the outer gear ring 510 and is fixedly connected to the inner peripheral wall of the working hole 511 to avoid the outer gear ring 510, facilitating the close fit between the two outer gear rings 510. The rotor blade 520 is rotatably sleeved on the limiting shaft 400, such that the rotor blade 520 and the outer gear ring 510 can rotate synchronously around the limiting shaft 400.

[0076] Refer to Figure 2 and Figure 4 , in this embodiment, the rotor blade 520 includes a sleeve portion 521, two partition portions 522, and at least two extension portions 523. The sleeve portion 521 is rotatably sleeved on the limiting shaft 400. The two partition portions 522 both extend along the radial direction of the sleeve. The inner ends of the two partition portions 522 are fixedly connected to opposite sides of the sleeve. The outer ends of the partition portions 522 are closely attached to and fixedly connected to the inner peripheral wall of the outer gear ring 510. The extension portions 523 protrude from the partition portions 522, and the extension portions 523 extend along the axial direction of the limiting shaft 400 towards the adjacent rotor gear 500. The inner side wall of the extension portion 523 is attached to the outer peripheral wall of the sleeve portion 521 of another rotor gear 500, the outer side wall of the extension portion 523 is attached to the inner peripheral wall of the working hole 511 of another rotor gear 500, and the end face of the extension portion 523 is attached to the end wall of the rotating cavity 101 to ensure the sealing between the rotor blade 520 and the two outer gear rings 510 and the end wall of the rotating cavity 101. Thus, the space formed by connecting the two working holes 511 by the two rotor blades 520 is divided into four working chambers.

[0077] When the two rotor gears 500 rotate, the rotor blade 520 of one of the rotor gears 500 rotates synchronously with the outer gear ring 510 it is connected to and rotates around the sleeve 521 within the working hole 511 of the other outer gear ring 510 to achieve the expansion and contraction of the volume of the working chamber, thereby facilitating the realization of the four strokes of intake, compression, ignition, and exhaust of the working chamber.

[0078] In some embodiments, in the plane perpendicular to the axial direction of the limiting shaft 400, the projections of the partition portions 522 and the extension portions 523 coincide, thereby being able to ensure the sealing between the rotor blade 520 and the outer gear ring 510 while ensuring the structural strength of the rotor blade 520.

[0079] In this embodiment, in the circumferential direction of the sleeve portion 521, the distance between the two side walls at the inner end of the partition portion 522 changes linearly.

[0080] In some embodiments, in the circumferential direction of the sleeve portion 521, the spacing between the two side walls of the inner end of the partition portion 522 gradually decreases, which can reduce the angle between the tangent at the connection between the sleeve portion 521 and the partition portion 522 and the partition portion 522, so as to reduce the angle of the partition portion 522 occupied by the sleeve portion 521 in the circumferential direction while ensuring the structural strength of the sleeve portion 521 and the partition portion 522, thereby reducing the minimum angle between the two rotor leaves 520, reducing the minimum volume of the working chamber, and improving the compression efficiency and exhaust efficiency of the fuel.

[0081] When the two rotor leaves 520 rotate to the minimum angle, the partial facing side walls between the two adjacent partitions 522 are pressed against each other. On the one hand, the volume of the working chamber can be reduced to fully compress the fuel or quickly discharge the exhaust gas. On the other hand, the stability, safety and feasibility of the two rotor gears 500 during rotation can be ensured.

[0082] In other embodiments, in the circumferential direction of the sleeve portion 521 , the distance between the two side walls of the inner end of the partition portion 522 may gradually increase so as to increase the volume of the working chamber while limiting the rotation angle of the rotor page 520 , thereby increasing the fuel compression ratio.

[0083] In some embodiments, a heat dissipation channel (not shown in the figure) is opened at the back end of the two rotor gears 500, and the heat dissipation channel extends along the extension direction of the rotor page 520. One end of the heat dissipation channel is connected to the rotating cavity 101, and the other end of the heat dissipation channel is connected to the gap between the limit shaft 400 and the rotor gear 500, so as to facilitate the filler to lubricate and cool the limit shaft 400 and the rotor page 520.

[0084] In other embodiments, the heat dissipation channel may be recessed on the opposite end surfaces of the two rotor pages 520. In other embodiments, the heat dissipation channel may penetrate the rotor gear 500 along the extension direction of the rotor page 520.

[0085] See also Figures 1 to 4 In this embodiment, in the projection plane perpendicular to the axis of the limiting shaft 400, the projection of the center of the working hole 511, the projection of the geometric center of the rotor gear 500 and the projection of the center of the limiting shaft 400 coincide, so that the rotation axis of the rotor gear 500 is located at the geometric center of the rotor gear 500, so that the pressure borne by the rotor gear 500 is evenly transmitted to all parts, effectively improving the structural strength and reliability of the rotor gear 500, and ensuring the stability of the rotor gear 500 when rotating. In addition, it can also ensure smooth and reliable power transmission when the rotor gear 500 is meshed with the main shaft gear 300.

[0086] Figure 5 It is a first structural schematic diagram of the rotary engine of the present invention when it is working.

[0087] See also Figures 1 to 5, in this embodiment, the two rotor gears 500 are respectively a first gear member and a second gear member. The two rotor vanes 520 within the first gear member and the second gear member divide the two working holes 511. The space formed after connection is divided into four working chambers. The four working chambers respectively include a first working chamber 531, a second working chamber 532, a third working chamber 533, and a fourth working chamber 534. The first working chamber 531, the second working chamber 532, the third working chamber 533, and the fourth working chamber 534 can cycle through the intake stroke, the compression stroke, the combustion stroke, and the exhaust stroke.

[0088] Refer to Figure 5 , at this time, the first working chamber 531 is in the state at the end of the compression stroke and the start of the combustion stroke, the second working chamber 532 is in the state at the end of the combustion stroke and the start of the exhaust stroke, the third working chamber 533 is in the state at the end of the exhaust stroke and the start of the intake stroke, and the fourth working chamber 534 is in the state at the end of the intake stroke and the start of the compression stroke.

[0089] Figure 6 is the second structural schematic diagram when the rotary engine of the present invention is working.

[0090] Refer to Figure 6 , at this time, the first working chamber 531 is in the state during the combustion stroke, the second working chamber 532 is in the state during the exhaust stroke, the third working chamber 533 is in the state during the intake stroke, and the fourth working chamber 534 is in the state during the compression stroke.

[0091] Figure 7 is the third structural schematic diagram when the rotary engine of the present invention is working.

[0092] Refer to Figure 7 , at this time, the first working chamber 531 is in the state at the end of the combustion stroke and the start of the exhaust stroke, the second working chamber 532 is in the state at the end of the exhaust stroke and the start of the intake stroke, the third working chamber 533 is in the state at the end of the intake stroke and the start of the compression stroke, and the fourth working chamber 534 is in the state at the end of the compression stroke and the start of the combustion stroke.

[0093] Figure 8 is the fourth structural schematic diagram when the rotary engine of the present invention is working.

[0094] Refer to Figure 8 , at this time, the first working chamber 531 is in the state during the exhaust stroke, the second working chamber 532 is in the state during the intake stroke, the third working chamber 533 is in the state during the compression stroke, and the fourth working chamber 534 is in the state during the combustion stroke.

[0095] Figure 9 is the fifth structural schematic diagram when the rotary engine of the present invention is working.

[0096] Refer to Figure 9 , at this time, the first working chamber 531 is in the state at the end of the exhaust stroke and the beginning of the intake stroke, the second working chamber 532 is in the state at the end of the intake stroke and the beginning of the compression stroke, the third working chamber 533 is in the state at the end of the compression stroke and the beginning of the combustion stroke, and the fourth working chamber 534 is in the state at the end of the combustion stroke and the beginning of the exhaust stroke.

[0097] Figure 10 It is the sixth structural schematic diagram when the rotary engine of the present invention is working.

[0098] Refer to Figure 10 , at this time, the first working chamber 531 is in the state during the intake stroke, the second working chamber 532 is in the state during the compression stroke, the third working chamber 533 is in the state during the combustion stroke, and the fourth working chamber 534 is in the state during the exhaust stroke.

[0099] Figure 11 It is the seventh structural schematic diagram when the rotary engine of the present invention is working.

[0100] Refer to Figure 11 , at this time, the first working chamber 531 is in the state at the end of the intake stroke and the beginning of the compression stroke, the second working chamber 532 is in the state at the end of the compression stroke and the beginning of the combustion stroke, the third working chamber 533 is in the state at the end of the combustion stroke and the beginning of the exhaust stroke, and the fourth working chamber 534 is in the state at the end of the exhaust stroke and the beginning of the intake stroke.

[0101] Figure 12 It is the eighth structural schematic diagram when the rotary engine of the present invention is working.

[0102] Refer to Figure 12 , at this time, the first working chamber 531 is in the state during the compression stroke, the second working chamber 532 is in the state during the combustion stroke, the third working chamber 533 is in the state during the exhaust stroke, and the fourth working chamber 534 is in the state during the intake stroke.

[0103] Refer to Figure 12 and Figure 1 , at this time, the first working chamber 531 is again in the state at the end of the compression stroke and the beginning of the combustion stroke, the second working chamber 532 is again in the state at the end of the combustion stroke and the beginning of the exhaust stroke, the third working chamber 533 is again in the state at the end of the exhaust stroke and the beginning of the intake stroke, and the fourth working chamber 534 is again in the state at the end of the intake stroke and the beginning of the compression stroke.

[0104] At this time, the first working chamber 531, the second working chamber 532, the third working chamber 533, and the fourth working chamber 534 have all completed the four-stroke working process in sequence, so that the rotary engine continuously outputs driving force, ensuring the stability and reliability of the operation of the rotary engine.

[0105] Refer to Figures 5 to 12 , in this embodiment, in the projection plane perpendicular to the axial direction of the limiting shaft 400, the angle change range between the projections of any two adjacent rotor pages 520 is 60° to 120°. That is, the adjacent two rotor pages 520 in any working chamber can cycle and change between 60° and 120°.

[0106] Refer to Figures 5 to 12 , in this embodiment, the teeth on the rotor gear 500 are evenly distributed on the outer peripheral wall of the rotor gear 500. The teeth of the main shaft gear 300 are evenly distributed on the outer peripheral wall of the main shaft gear 300. The number of teeth of the rotor gear 500 is twice the number of teeth of the main shaft gear 300, and the rotor gear 500 and the main shaft gear 300 are conjugate.

[0107] Refer to Figures 1 to 12 , this application provides a rotary engine, which, when working, first drives the main shaft 200 to rotate by an external force. When the main shaft 200 rotates, it drives the rotor gear 500 to rotate through the main shaft gear 300, so that the four working chambers change, and the intake stroke, compression stroke, combustion stroke, and exhaust stroke are respectively carried out.

[0108] When the working chamber is in the combustion stroke, in the rotation direction of the rotor page 520, the burning fuel expands to push the front rotor page 520 to rotate. The front rotor page 520 rotates to drive the first gear member connected to this rotor page 520 to rotate. The first gear member rotates to drive a main shaft gear 300 to rotate. The main shaft gear 300 drives another main shaft gear 300 to rotate through the main shaft 200, and the other main shaft gear 300 drives the second gear member to rotate forward. The second gear member rotates to make the rear rotor page 520 of the combustion chamber in the combustion stroke rotate forward, thereby completing the position change of the working chamber, so that a single working chamber can sequentially complete the intake stroke, compression stroke, combustion stroke, and exhaust stroke.

[0109] The four working chambers complete the combustion stroke in sequence, so that the two rotor gears 500 rotate in the same direction with different speeds, the two main shaft gears 300 rotate around the main shaft 200 at the same speed and in the same direction, and the main shaft 200 continuously applies a driving force to the outside to drive other structures to work.

[0110] Moreover, when the rotary engine is operating, the rotor blade 520 is located inside the external gear ring 510. When the working chamber combusts and does work to rotate with the rotor blade 520, the rotor blade 520 drives the external gear ring 510 to rotate around the limit shaft 400, thereby preventing the outer peripheral wall of the external gear ring 510 from squeezing the peripheral side wall of the rotating chamber 101, effectively avoiding frictional damage to the inner peripheral wall of the working chamber, ensuring the sealing performance of the rotary engine, and extending the service life of the rotary engine.

[0111] The above embodiments are only illustrative examples of the structure. The structures in each embodiment are not fixedly combined structures. Without structural conflicts, the structures in multiple embodiments can be arbitrarily combined and used.

[0112] Although the present application has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present application can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A rotary engine, characterized in that: include: A housing having a rotating chamber therein; A main shaft rotatably disposed on the housing; Two main shaft gears, which are located in the rotating cavity, and the two main shaft gears are fixedly sleeved on the main shaft in sequence along the axial direction of the main shaft; in a projection plane perpendicular to the main shaft rotation axis, the geometric center projections of the two main shaft gears are located on both sides of the projection of the main shaft rotation axis, and the projections of the two main shaft gears are symmetrically arranged relative to the main shaft rotation axis; A limiting shaft, which is located in the rotating cavity and limited on the housing, and the axis of the limiting shaft is parallel to the rotating axis of the main shaft; Two rotor gears are sequentially arranged in the rotating cavity along the axial direction of the limiting shaft, the rotor gear comprises an outer gear ring and a rotor leaf, the outer gear ring is meshed with the main shaft gear, a working hole penetrating the rotor gear along the axial direction of the limiting shaft is arranged in the outer gear ring; the rotor leaf is located in the working hole and connected to the outer gear ring, and the rotor leaf is rotatably sleeved on the limiting shaft; a portion of the rotor leaf extends along the axial direction of the limiting shaft to extend into the working hole of the other rotor gear to separate the working holes; The two outer gear rings, the adjacent parts of the two rotor leaves and the opposite end walls of the rotating chamber together form a working chamber for combustion and work.

2. The rotary engine according to claim 1, characterized in that: The cross section of the working hole is circular; in a projection plane perpendicular to the axis of the limiting shaft, the projection of the center of the working hole, the projection of the geometric center of the rotor gear and the projection of the center of the limiting shaft coincide with each other.

3. The rotary engine according to claim 1 or 2, characterized in that: The rotor leaf includes a sleeve portion, two partition portions and at least two extension portions, the sleeve portion is rotatably sleeved on the limit shaft, the two partition portions both extend along the radial direction of the sleeve, the inner ends of the two partition portions are connected to the opposite sides of the sleeve, and the outer ends of the partition portions are tightly fitted and connected to the inner circumferential wall of the outer gear ring; the extension portion is protruding on the partition portion, and the extension portion extends toward the adjacent rotor gear along the axial direction of the limit shaft, the inner side wall of the extension portion is fitted to the outer circumferential wall of the sleeve portion of the other rotor gears, the outer side wall of the extension portion is fitted to the inner circumferential wall of the working cavity of the other rotor gears, and the end face of the extension portion is fitted to the end wall of the working cavity.

4. The rotary engine according to claim 3, characterized in that: In the circumferential direction of the sleeve portion, the distance between the two side walls of the inner end of the partition portion changes linearly.

5. The rotary engine according to claim 1, characterized in that: In a projection plane perpendicular to the axial direction of the limiting shaft, the angle between the projections of any two adjacent rotor leaves varies in the range of 60° to 120°.

6. The rotary engine according to claim 5, characterized in that: The number of teeth of the rotor gear is twice the number of teeth of the main shaft gear, and the rotor gear is conjugate with the main shaft gear.

7. The rotary engine according to claim 1, characterized in that: In the rotation direction of the rotor gear, the shell is provided with an air inlet hole, an ignition hole and an exhaust hole in sequence around the limiting axis, and the working chamber can cyclically connect the air inlet hole, the ignition hole and the exhaust hole in sequence during rotation.

8. The rotary engine according to claim 1, characterized in that: In the axial direction of the limiting shaft, a dimension parameter of an outer circumference of the outer gear ring is less than or equal to a dimension parameter of an inner circumference of the outer gear ring.

9. The rotary engine according to claim 1, characterized in that: The main shaft gear is an eccentric circular gear or an eccentric non-circular gear; The rotor gear is an elliptical gear or a quasi-elliptical gear conjugated with the main shaft gear; in a plane perpendicular to the axial direction of the limiting shaft, the pitch curve of the rotor gear can be obtained by the numerical solution method of the pitch curve equation of the main shaft gear according to the conjugation principle.

10. The rotary engine according to claim 1, characterized in that: Both ends of the main shaft are sleeved with first bearings; the housing is provided with a main shaft hole relative to the first bearing, and the first bearing is accommodated in the main shaft hole; And / or, the limiting shaft is provided with at least two second bearings relative to the two rotor gear sleeves.

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