An elliptical rotor engine with a self-supercharging structure

Abstract

The present invention discloses an elliptical rotor engine with a self-supercharging structure, wherein a partition is integrally formed between the working side wall and the connecting boss to form an intake area and an exhaust area located on both sides of the partition and isolated from each other inside the rotor, a plurality of supercharging blades are arranged in the intake area for centrifugal rotation to realize airflow supercharging, the roots of the plurality of supercharging blades are connected to the circumference of the connecting boss and are arranged at equal intervals around the rotation center to form a gradually expanding channel between each supercharging blade, a circle of converging channels is provided along the inner edge of the working side wall in the intake area, and the converging channels connect the various gradually expanding channels; the rotor of the rotary engine is partitioned on both sides by the partition to ensure normal intake and exhaust functions, and supercharging blades that rotate synchronously with the rotor are provided on the intake side of the rotor, and the rotation of the rotor is used to suck air in the intake area and drive the formation of centrifugal supercharged airflow, thereby effectively increasing the intake pressure and thereby increasing the intake volume of the combustion chamber.

Description

Technical Field

[0001] The present invention relates to the technical field of rotary engines, in particular to an elliptical rotary engine with a self-supercharging structure. Background Art

[0002] The supercharging system is a crucial component of an engine's intake and exhaust systems. Traditional engines typically utilize turbocharging, effectively utilizing exhaust energy to increase intake pressure and, in turn, boost engine power. For compact rotary engines, the supercharging system is crucial for high-altitude power recovery.

[0003] However, as a new type of engine, the elliptical rotor engine has a structure that is quite different from that of a traditional engine. Its intake and exhaust are carried out through the end covers on both sides, and the exhaust gas is not easy to collect. The turbocharging optimization structure design is complex. The rotor engine supercharging systems in the existing technology are all external supercharging systems, that is, a turbofan is arranged in the air intake duct, and the turbofan is installed on the rotating shaft. This type of external supercharging system brings additional mechanical structure, which not only increases the overall weight of the engine and increases the difficulty of assembly, but also increases the overall structural size of the rotor engine. As an aircraft engine, the elliptical rotor engine extremely pursues power-to-weight ratio and miniaturized design. Therefore, the supercharging system in the existing technology is not suitable for the elliptical rotor engine. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects in the prior art and provide an elliptical rotor engine with a self-supercharging structure to overcome one or more problems caused by the limitations and defects of the relevant technology to a certain extent.

[0005] In order to achieve the above object, the technical solution of the present invention is as follows:

[0006] An elliptical rotor engine with a self-supercharging structure includes an intake end cover, a cylinder body, an exhaust end cover, and a rotor. The rotor includes an integrally formed working side wall and a connecting boss. The working side wall is formed by connecting and closing a double-arc epicycloid to form a nearly elliptical structure. The connecting boss is coaxially arranged on the rotation center of the rotor. A partition is integrally formed between the working side wall and the connecting boss to form an intake area and an exhaust area located on both sides of the partition and isolated from each other inside the rotor. The intake area is connected to the intake hole on the intake end cover, and the exhaust area is connected to the exhaust hole on the exhaust end cover. An intake port and an exhaust port connected to the cylinder combustion chamber are provided on the outer edge surface of the working side wall at corresponding stroke phase positions. The intake port is connected to the intake area, and the exhaust port is connected to the exhaust area.

[0007] The connecting boss is higher than the plane of the partition, and several booster blades are arranged in the air intake area for centrifugal rotation to achieve airflow suction and supercharging. The roots of several booster blades are connected to the circumference of the connecting boss and are arranged at equal angles around the rotation center of the rotor to form a gradually expanding channel extending from the circumference of the connecting boss to the inner edge of the working side wall between each booster blade. A circle of converging channels is set along the inner edge of the working side wall in the air intake area, and the converging channels connect each gradually expanding channel, and the converging channels are connected to the combustion chamber through the air intake.

[0008] Furthermore, the booster blades are integrally formed with the rotor, the lower end surface thereof is integrally connected to the partition plate, and the blade tips are integrally connected to the inner edge surface of the working side wall.

[0009] Furthermore, a confluence notch is formed by removing the lower side corner of the blade end of the boost blade to connect adjacent gradually expanding channels. The confluence channel is constructed by several confluence notches, partitions and the inner edge of the working side wall.

[0010] Furthermore, the upper edge of the air inlet is flush with or lower than the upper edge of the converging notch.

[0011] Furthermore, the area on the intake side of the partition close to the air inlet is sunken to form an intake flow channel that is connected to the air inlet, and a protrusion is formed on the exhaust side of the partition. The intake flow channel extends from the inner edge of the working side wall to the outer peripheral surface of the connecting boss. The lower edge of the air inlet is located at the bottom of the intake flow channel, which is used to increase the diameter of the air inlet.

[0012] Furthermore, the area on the partition close to the exhaust port protrudes into the exhaust area to form a collection barrier, and the collection barrier area is sunken to set an exhaust channel, and the exhaust channel is connected to the exhaust hole for exhaust. The exhaust area is protruded with several reinforcing ribs distributed according to dynamic balance, and the two ends of the reinforcing ribs are respectively connected to the inner edge of the working side wall and the outer peripheral surface of the connecting boss.

[0013] Furthermore, the number of booster blades is no less than 9.

[0014] Furthermore, the booster blades are arranged at an angle, and the angle between the blade plane and the axial generatrix of the connecting boss is 30°-75°.

[0015] Compared with the prior art, the elliptical rotor engine with a self-supercharging structure of the present invention has the following beneficial effects:

[0016] The structure of the rotor is improved and designed. The rotor is partitioned on both sides by partitions to isolate the intake and exhaust, ensuring normal intake and exhaust functions. At the same time, booster blades that rotate synchronously with the rotor are set on the intake side of the rotor. The rotation of the rotor is used to suck the air in the intake area and drive the formation of centrifugal boost airflow, which effectively increases the intake pressure and thus improves the intake volume of the combustion chamber. The booster blades also have a structural reinforcement function. While ensuring the basic requirements of the rotor structural strength, the rotor engine is given the function of self-supercharging. The booster blades are built into the rotor. Compared with the external booster impeller, it does not increase the mechanical structure and accessories of the rotor engine, does not occupy additional installation space of the rotor engine, and is in line with the design concept of high power-to-weight ratio and miniaturization of aircraft engines. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the elliptical rotor engine disclosed in the present invention;

[0018] Figure 2 This is an exploded view of the assembly of the elliptical rotor engine disclosed in the present invention;

[0019] Figure 3 It is a cross-sectional view of the elliptical rotor engine disclosed in the present invention;

[0020] Figure 4 for Figure 2 A perspective view of the middle rotor from the intake side;

[0021] Figure 5 for Figure 2 Side view of the intake side of the middle rotor;

[0022] Figure 6 for Figure 2 A perspective view of the middle rotor from the exhaust side.

[0023] In the figure: 1. Intake end cover; 11. Intake hole; 2. Cylinder body; 3. Exhaust end cover; 31. Exhaust hole; 4. Eccentric shaft; 5. Counterweight; 6. Phase gear ring; 7. Phase gear; 8. Rotor; 81. Working side wall; 82. Booster blade; 83. Converging gap; 84. Intake port; 85. Exhaust port; 86. Exhaust channel; 87. Reinforcement rib; 88. Intake flow channel; 9. Rotation bearing; 10. Revolution bearing. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only the best embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0025] This embodiment provides an elliptical rotor engine with a self-supercharging structure, such as Figure 1-Figure 3 As shown, the rotary engine includes an intake end cover 1, a cylinder body 2, an eccentric shaft 4, a counterweight 5, a phase gear ring 6, a phase gear 7, a rotation bearing 9, a revolution bearing 10, an exhaust end cover 3 and a rotor 8. The structure and composition of the rotor 8 engine refer to the known technology; the rotor 8 has rotation and revolution motion under the meshing transmission of the phase gear 7 and the phase gear ring 6, and the rotation angular velocity is greater than the revolution angular velocity. Therefore, compared with the technical route of using the impeller to rotate synchronously with the eccentric shaft 4 to achieve intake supercharging in the prior art, the effect of using the rotation of the rotor 8 for self-supercharging is better;

[0026] like Figure 4-Figure 6 As shown, the rotor 8 includes an integrally formed working side wall 81 and a connecting boss. The working side wall 81 is a nearly elliptical structure formed by connecting and closing double-arc epitrochoids. The connecting boss is arranged at the rotation center of the rotor 8. The phase gear 7 is installed through the central axis hole of the connecting boss. The working side wall 81 and the connecting boss are connected by an integrally formed partition, which simultaneously divides the interior of the rotor 8 into an intake area located on the intake side of the partition and an exhaust area on the exhaust side.

[0027] The intake end cover 1 and the exhaust end cover 3 are respectively sealed and connected to the two end surfaces of the working side wall 81. The intake area is composed of the space between the intake end cover 1 and the partition. The supercharged fan blades 82 are arranged in the intake area. The exhaust area is composed of the space between the exhaust end cover 3 and the partition. Several triangular-structured intake holes 11 are distributed in an annular manner on the intake end cover 1. The intake holes 11 are directly opposite to the area where the supercharged fan blades 82 are involved. The outer edge of the working side wall 81 is provided with an intake port 84 and an exhaust port 85 connected to the combustion chamber of the cylinder 2. The setting position and diameter width of the intake port 84 and the exhaust port 85 correspond to the valve timing phase position and valve timing angle of the intake stroke and exhaust stroke respectively. The intake port 84 is connected to the intake area, and the exhaust port 85 is connected to the exhaust area.

[0028] The two ends of the connecting boss are higher than the plane of the partition, and its end face should be lower than the end face of the working side wall 81. In order to improve the structural strength of the rotor 8, the boost blade 82 also serves as a reinforcing fin, and its blade root is fixedly connected to the circumference of the connecting boss, or is an integrally formed structure, and its blade lower end face is fixedly connected to the partition or integrally formed to form a connection, and the blade end is fixedly connected to the inner side of the working side wall 81 or is an integrally connected structure. Therefore, the length of the boost blade 82 is different, and it is adapted to the spacing between the circumference of the connecting boss and the inner side of the working side wall 81. The number of boost blades 82 is not less than 9 to ensure the boost effect. Several boost blades 82 are arranged at equal angles around the rotation center of the rotor 8, and a gradually expanding channel is formed between two adjacent boost blades 82. The airflow in the gradually expanding channel forms a centrifugal boost intake with high-speed rotation. In order to form a gradually expanding channel connecting each The confluence channel of the channel is formed by cutting off the lower corner of the fan blade end along the plane of the partition and the inner edge of the working side wall 81 to form a confluence notch 83. The confluence notch 83, the partition and the inner edge of the working side wall 81 are constructed to form a circle of confluence channels that sequentially connect each gradually expanding channel and are closed. The confluence notch 83 is the cross-section of the confluence channel. The air inlet 84 is connected to the confluence channel and is located on the outer side of the confluence channel. The upper edge of the confluence notch 83 should be flush with or higher than the upper edge line of the air inlet 84. The airflow is retracted through the boost blades 82 in front of the air inlet 84. The boost blades 82 generate centrifugal force as the rotor 8 rotates at high speed. The centrifugal force quickly pushes the airflow to the confluence channel outside the boost blades 82, forming a strong airflow. The airflows in multiple gradually expanding channels converge in the confluence channel at the wall of the rotor 8, and finally flow into the combustion chamber from the air inlet 84, thereby realizing the pressurization of the intake system.

[0029] The structural design of the booster blades 82 is based on the structure of centrifugal impeller blades. The blades are tilted to increase the airflow contact area and guide the retracted airflow inward. The angle between the blade plane and the axial generatrix, i.e., the tilt angle θ, is 30°-75° to ensure the entrainment of air. In addition, the blade ends should be appropriately twisted to reduce the obstruction of the baffle plane on the airflow.

[0030] In this embodiment, to further increase the intake flow rate, the area near the air inlet 84 on the partition is sunken to form an intake flow channel 88 that extends and connects to the air inlet 84. The width of the intake flow channel 88 is not less than the width of the air inlet 84, and the lower edge of the air inlet 84 is located at the bottom of the intake flow channel 88. This increases the height of the air inlet 84 and thus the intake cross-sectional area. At the same time, the sunken structure is used as a reinforcement structure of the rotor 8. The intake flow channel 88 forms a bulge on the exhaust side of the partition and extends from the inner edge of the working side wall 81 to the outer peripheral surface of the connecting boss.

[0031] In addition, in order to improve the exhaust gas emission efficiency in the exhaust area, the area near the exhaust port 85 on the partition is raised into the exhaust area to form a bus block, and an exhaust channel 86 is set in the bus block. The exhaust channel 86 is connected to the exhaust hole 31 for exhaust. There are three exhaust holes 31, which are respectively corresponding to the exhaust stroke phases of the three combustion chambers; the idle area of ​​the exhaust area is provided with several reinforcing ribs 87 connected to the inner edge of the working side wall 81 and the outer peripheral surface of the boss, and the several reinforcing ribs 87 should be distributed according to dynamic balance.

[0032] The directional words such as "upper", "lower", "side", "end", "bottom", "front", "back" mentioned in this article are references to Figures 1-6 The description is based on the orientation, positional relationship, or airflow direction shown in the corresponding drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to being constructed and operated in a specific orientation;

[0033] Furthermore, some of the above terms may be used to express other meanings besides indicating a direction or positional relationship. For example, the terms "on" and "in" may also be used to express a dependency or connection relationship in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An elliptical rotor engine with a self-supercharging structure, comprising an intake end cover, a cylinder block, an exhaust end cover, and a rotor, wherein the rotor comprises an integrally formed working sidewall and a connecting boss, the working sidewall being formed by connecting and closing a double-arc epitrochoid curve to form a nearly elliptical structure, and the connecting boss being coaxially disposed at the rotor's rotational center, characterized in that: A partition is integrally formed between the working side wall and the connecting boss to form an intake area and an exhaust area located on both sides of the partition and isolated from each other inside the rotor, the intake area is connected to the intake hole on the intake end cover, and the exhaust area is connected to the exhaust hole on the exhaust end cover. An intake port and an exhaust port connected to the cylinder combustion chamber are provided on the outer edge surface of the working side wall at corresponding stroke phase positions, the intake port is connected to the intake area, and the exhaust port is connected to the exhaust area; The connecting boss is higher than the plane of the partition, and several boost blades are arranged in the air intake area for synchronous rotation to achieve airflow suction and centrifugal supercharging. The roots of several boost blades are connected to the circumference of the connecting boss and are arranged at equal angles around the rotation center of the rotor to form a gradually expanding channel extending from the circumference of the connecting boss to the inner edge of the working side wall between each of the boost blades. A circle of converging channels is provided along the inner edge of the working side wall in the air intake area, and the converging channels connect each of the gradually expanding channels, and the converging channels are connected to the combustion chamber through the air intake.

2. The elliptical rotor engine with a self-supercharging structure according to claim 1, characterized in that: The booster blade is integrally formed with the rotor, the lower end surface thereof is integrally connected to the partition plate, and the blade tip is integrally connected to the inner edge surface of the working side wall.

3. The elliptical rotor engine with a self-supercharging structure according to claim 2, characterized in that: A confluence notch is formed by removing the lower side corner of the blade end of the boost blade to connect the adjacent gradually expanding channels. The confluence channel is formed by a plurality of the confluence notches, the partition plate and the inner edge of the working side wall.

4. The elliptical rotor engine with a self-supercharging structure according to claim 3, characterized in that: The upper edge of the air inlet is flush with or lower than the upper edge of the converging notch.

5. The elliptical rotor engine with a self-supercharging structure according to claim 4, characterized in that: The area on the air inlet side of the partition close to the air inlet is sunken to form an intake flow channel connected to the air inlet, and a protrusion is formed on the exhaust side of the partition. The intake flow channel extends from the inner edge of the working side wall to the outer peripheral surface of the connecting boss, and the lower edge of the air inlet is located at the bottom of the intake flow channel.

6. The elliptical rotor engine with a self-supercharging structure according to claim 1, characterized in that: The area on the partition close to the exhaust port protrudes into the exhaust area to form a collection blockage, and the collection blockage area is sunken to set an exhaust channel, and the exhaust channel is connected to the exhaust hole for exhaust. The exhaust area is protruded with several reinforcing ribs distributed according to dynamic balance, and the two ends of the reinforcing ribs are respectively connected to the inner edge of the working side wall and the outer peripheral surface of the connecting boss.

7. The elliptical rotor engine with a self-supercharging structure according to claim 3, characterized in that: The number of the booster blades is no less than 9.

8. The elliptical rotor engine with a self-supercharging structure according to claim 1, characterized in that: The booster blades are tilted, and the angle between the blade plane and the axial generatrix of the connecting boss is 30°-75°.

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