Rotary and dual rotary engines

Abstract

The utility model discloses an embodiment provides a kind of rotor and double rotor engine.Rotor includes main body, first protruding portion, first recess, first sealing groove and first sealing piece.First protruding portion and first recess are set on main body along the circumference of main body.First sealing groove is arranged on the surface of first recess, and the length direction of first sealing groove is same with the axial direction of main body.First sealing piece is clamped in first sealing groove, and part protrudes from the slot of first sealing groove, and first sealing piece has elasticity.An embodiment provided by the utility model can effectively reduce the gap between first sealing piece and first protruding portion, thereby improving the air tightness when first protruding portion cooperates with first recess, which helps to improve the efficiency of double rotor engine.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, specifically to a rotary and dual-rotor engine. Background Technology

[0002] In automobiles and other equipment, a combustible mixture is typically ignited and compressed. The expanding gas pushes a piston within a cylinder, causing repeated motion before being converted into axial motion. However, due to the piston's inertia, the extra work done by the repeated motion is greater than the useful work, resulting in relatively less useful work and higher energy consumption. Therefore, some existing equipment uses rotary engines to overcome this drawback. However, because the rotor is eccentric, the initial torque is also not at the axis, resulting in still relatively low useful work and high energy consumption. Furthermore, the high friction between the rotor and the inner wall shortens the engine's lifespan. Based on this, some equipment uses twin-rotor engines. The design of a twin-rotor engine differs significantly from that of a traditional piston engine. A twin-rotor engine uses two sets of two pairs of concentric rotors to form separate compression and combustion cylinders, achieving a fully centrifugal axial rotation power output, which helps reduce energy consumption and increase power. However, due to wear, vibration, and other factors, the airtightness of the two rotors in a twin-rotor engine decreases when they cooperate to intake or compress gas, thus reducing the engine's efficiency. Utility Model Content

[0003] To address at least some of the problems in the prior art, this utility model provides a rotor and dual-rotor engine that can improve rotor fit and airtightness.

[0004] A first aspect of this utility model provides a rotor for a dual-rotor engine, comprising:

[0005] main body;

[0006] First protrusion;

[0007] The first recessed portion and the first protrusion portion are disposed on the body along the circumference of the body;

[0008] A first sealing groove is provided on the surface of the first recess, and the length direction of the first sealing groove is in the same direction as the axial direction of the main body;

[0009] The first sealing element is engaged in the first sealing groove and partially protrudes from the opening of the first sealing groove. The first sealing element is elastic.

[0010] In some embodiments, the first seal is rotatably disposed in the first sealing groove.

[0011] In some embodiments, the first seal includes a first sealing sub-component and a second sealing sub-component. The first sealing sub-component is disposed at the bottom of the first sealing groove and is elastic. The second sealing sub-component is disposed on the side of the first sealing sub-component near the groove opening, and the first sealing sub-component partially protrudes from the groove opening.

[0012] In some embodiments, the first sealing groove is located on the side of the first recess in the circumferential direction of the body, near the end of the first recess.

[0013] In some embodiments, the first seal protrudes from the groove by a height of 4mm to 8mm.

[0014] In some embodiments, the wall thickness of the groove forming the first sealing groove is greater than or equal to 3.5 mm.

[0015] In some embodiments, the body has a first through hole extending along the axial direction for connection with the dual-rotor engine; on at least one of two opposite sides of the body along the axial direction, a second sealing groove is provided around the first through hole, and a second sealing element is provided in the second sealing groove surrounding the first through hole.

[0016] In some embodiments, a first lubrication groove extending circumferentially is formed on two opposite sides of the main body along the axial direction, and a second through hole is formed at the bottom of the first lubrication groove, the second through hole connecting the two first lubrication grooves on the two sides.

[0017] In some embodiments, a third through hole is provided in the wall of the second through hole, and the third through hole connects the second through hole with the surface of the first recess.

[0018] A second aspect of this utility model provides a dual-rotor engine, including a rotor, a housing, and a drive shaft as described in any of the preceding claims, wherein the drive shaft is disposed in the housing, and the two rotors are respectively sleeved on two different drive shafts for cooperation.

[0019] The rotary and dual-rotor engines provided in this embodiment of the invention have at least the following beneficial effects:

[0020] The rotor provided in this embodiment of the utility model has a first sealing groove and an elastic first sealing member protruding from the opening of the first sealing groove. When the first protrusion and the first recess are engaged, the first sealing member can abut against the first protrusion. Since the first sealing member is elastic, the elastic force generated by the first sealing member during the abutment process can effectively reduce the gap between the first sealing member and the first protrusion, thereby improving the airtightness when the first protrusion and the first recess are engaged, which helps to improve the efficiency of the dual-rotor engine.

[0021] The dual-rotor engine provided in this embodiment of the invention uses the aforementioned rotor, which can improve airtightness, thereby improving the efficiency of air intake and gas compression, and thus improving the efficiency of the dual-rotor engine. Attached Figure Description

[0022] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0023] Figure 1 This is a first-view schematic diagram of a portion of the rotor structure in the first embodiment of this utility model.

[0024] Figure 2 This is a second-view schematic diagram of a portion of the rotor structure in the second embodiment of this utility model.

[0025] Figure 3 for Figure 2 Enlarged schematic diagram of region D in the middle.

[0026] Figure 4 for Figure 2 A schematic diagram of section AA in the diagram.

[0027] Figure 5 for Figure 2 A schematic diagram of the BB section.

[0028] Figure 6 for Figure 5 A magnified diagram of region C in the image.

[0029] Explanation of reference numerals in the attached figures

[0030] 10. Rotor; 11. Main body; 12. First protrusion; 13. First recess; 14. First sealing groove; 141. Groove opening; 15. First sealing element; 151. First sealing sub-element; 152. Second sealing sub-element; 16. First through hole; 17. Second sealing groove; 18. Second sealing element; 20. First lubrication groove; 21. Second through hole; 22. Third through hole; 23. Second lubrication groove. Detailed Implementation

[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0032] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] It should also be noted that the division of multiple embodiments in this utility model is only for the convenience of description and should not constitute a special limitation. Features in various embodiments can be combined and referenced in each other without contradiction.

[0035] However, due to factors such as wear and vibration, gaps can easily form between the raised and recessed parts of the two rotors in a twin-rotor engine when they work together to compress or draw in gas. This reduces the airtightness, allowing gas to leak out and thus reducing the efficiency of gas intake or compression, thereby reducing the overall efficiency of the twin-rotor engine.

[0036] Based on this, such as Figures 1 to 5 As shown, this utility model embodiment provides a dual-rotor engine, including a housing and a drive shaft, the drive shaft being disposed in the housing, and also including two rotors 10 provided in this utility model embodiment, the two rotors 10 being respectively sleeved on two different drive shafts for cooperation.

[0037] The rotor 10 provided in this embodiment of the present invention is used in a dual-rotor engine and includes a main body 11, a first protrusion 12, a first recess 13, a first sealing groove 14, and a first sealing element 15.

[0038] The main body 11 has a first through hole 16 extending axially along the main body 11 for connection with a dual-rotor engine. Specifically, the rotor 10 is sleeved on the drive shaft through the first through hole 16, so as to be driven by the drive shaft to rotate around the drive shaft, or the rotor 10 drives the drive shaft to rotate. Specifically, the first through hole 16 is interference-fitted with the drive shaft to improve the tightness of the assembly.

[0039] The first protrusion 12 and the first recess 13 are arranged circumferentially on the main body 11. In a dual-rotor engine, two rotors 10 connected to different drive shafts can rotate synchronously in opposite directions. For example, the two rotors 10 rotate at the same speed but in opposite directions; one rotor 10 rotates clockwise and the other rotor 10 rotates counterclockwise. The first protrusion 12 on one rotor 10 can cooperate with the first recess 13 on the other rotor 10, and also cooperate with the housing to draw in or compress gas. In some specific embodiments, one rotor 10 is provided with two first protrusions 12 and two first recesses 13. The two first protrusions 12 are centrally symmetrical about the first through hole 16, and the two first recesses 13 are centrally symmetrical about the first through hole 16. Thus, when the two rotors 10 engage, each rotation adds an additional pair of first protrusions 12 and first recesses 13, which helps improve the efficiency of the dual-rotor engine. Furthermore, the two first recesses 13 and the two first protrusions 12 are symmetrical about the first through-hole 16, resulting in a more uniform mass distribution of the rotors 10. This makes it easier for the rotation center of the rotors 10 to coincide with their center of gravity, thereby improving the stability of the rotors 10 during rotation, further reducing vibration, minimizing the gaps generated when the two rotors 10 engage, and increasing the efficiency of the dual-rotor engine. Moreover, the two first protrusions 12 and the two first recesses 13 are evenly spaced along the circumference of the main body 11. This further improves the stability of the rotors 10 during rotation, further reducing vibration, and further minimizing the gaps generated when the two rotors 10 engage, thus improving the efficiency of the dual-rotor engine.

[0040] The first sealing groove 14 is provided on the surface of the first recess 13, and the length direction of the first sealing groove 14 is in the same direction as the axial direction of the main body. The first sealing member 15 is engaged in the first sealing groove 14 and partially protrudes from the groove opening 141 of the first sealing groove 14. The first sealing member 15 is elastic. It can be understood that the width of the groove opening 141 of the first sealing groove 14 is smaller than the width inside the first sealing groove 14 and the width of the first sealing member 15 along the circumference of the main body 11. Therefore, the first sealing member 15 can be engaged in the first sealing groove 14 by being limited by the groove wall near the groove opening 141 of the first sealing groove 14, which can reduce the probability of the first sealing member 15 falling out of the first sealing groove 14. Thus, when the first protrusion 12 and the first recess 13 engage, the first seal 15 partially protrudes from the opening 141 of the first sealing groove 14, allowing it to abut against the first protrusion 12. During this contact, the first seal 15, being elastic, can be compressed, reducing resistance to the first protrusion 12. Furthermore, the elastic force generated by the first seal 15 effectively reduces the gap between it and the first protrusion 12, thereby improving the airtightness of the engagement between the first protrusion 12 and the first recess 13, which helps improve the efficiency of the dual-rotor engine. It is understood that after the first recess 13 and the first protrusion 12 engage, the first seal 15 can spring back to partially protrude from the opening 141 of the first sealing groove 14. It is understood that the axial direction of the main body is perpendicular to the circumferential direction. Figure 2 For ease of viewing, only one first sealing groove 14 with a first sealing element 15 is shown. In actual applications, each first sealing groove 14 is equipped with a first sealing element 15.

[0041] Specifically, see Figure 2The first sealing groove 14 is provided on the side of the first recess 13 that is close to the end of the first recess 13 on the circumference of the main body 11. Thus, the first seal 15 can abut against the first protrusion 12 when the first recess 13 and the first protrusion 12 begin to engage, thereby reducing gas leakage at the beginning of the intake or compression of gas and helping to improve the efficiency of the dual-rotor engine; or the first seal 15 can abut against the first protrusion 12 when the first recess 13 and the first protrusion 12 end to engage, thereby reducing gas leakage at the end of the intake or compression of gas and also helping to improve the efficiency of the dual-rotor engine. Furthermore, each first recess 13 is provided with two first sealing grooves 14, and the two first sealing grooves 14 are respectively located on both sides of the two ends of the first recess 13 that are close to the first recess 13 on the circumference of the main body 11. In this way, the first seal 15 can abut against the first protrusion 12 when the first recess 13 and the first protrusion 12 begin to engage and when they end to engage, thereby reducing gas leakage at the beginning or end of the intake or compression of gas, and further helping to improve the efficiency of the dual rotor engine.

[0042] In some specific embodiments, the first seal 15 is rotatably disposed in the first sealing groove 14. That is, when the first seal 15 abuts against the first protrusion 12, the first seal 15 can rotate. This reduces the resistance exerted by the first seal 15 on the first protrusion 12, helps to stabilize the rotation of the rotor 10 and helps to reduce the impact on the rotational speed of the rotor 10, thereby helping to improve the efficiency of the dual-rotor engine, and also reducing the wear of the first seal 15 and the first cam. Specifically, the first seal 15 is cylindrical, which facilitates rotation and helps to reduce resistance.

[0043] In some specific embodiments, the first seal 15 protrudes from the groove 141 by a height of 4mm to 8mm. Figure 3 In the diagram, L1 indicates the height of the first seal protruding from the groove. Specifically, for example, the height of the first seal 15 protruding from the groove 141 is 4mm, 5mm, 6mm, 7mm, or 8mm. This avoids the first seal 15 protruding too little, resulting in insufficient contact with the first protrusion 12, making it difficult to reduce gaps, thus hindering the reduction of gas leakage and improving airtightness, which is detrimental to improving the efficiency of the dual-rotor engine. At the same time, it also avoids the first seal 15 protruding too much, which would cause excessive resistance between the first seal 15 and the first protrusion 12, affecting the rotational speed and stability of the rotor 10, and thus affecting the efficiency of the dual-rotor engine, helping to reduce wear on the first protrusion 12 and the first seal 15.

[0044] In some specific embodiments, the thickness of the wall forming the first sealing groove 14 is greater than or equal to 3.5 mm. Because the first sealing groove 14 is formed on the main body 11, the wall of the first sealing groove 14 is a portion of the main body 11. Figure 3 In the diagram, L2 indicates the thickness of the wall of the first sealing groove 14. It is understood that the thickness of the wall of the first sealing groove 14 can be non-uniform. Specifically, for example, the wall thickness can be 3.5mm, 3.79mm, 4mm, 5.5mm, or 6mm. Thus, when the first protrusion 12 abuts against the first seal 15, the wall of the first sealing groove 14 can withstand the force applied by the first seal 15, helping to prevent damage to the rotor 10 due to forces encountered during operation, improving the durability of the rotor 10, and extending its service life.

[0045] In some specific embodiments, the depth of the first sealing groove 14 is 6mm~12mm. Figure 3 In the text, L3 indicates the depth of the first sealing groove 14. For example, the depth of the first sealing groove 14 can be 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, or 12mm. This avoids the first sealing element 15 from easily falling off due to an insufficient depth of the first sealing groove 14, while also avoiding the overall structural strength of the rotor 10 from being reduced due to an excessive depth, thereby reducing the probability of the rotor 10 being damaged by stress.

[0046] The rotor 10 provided in this embodiment of the present invention has a first sealing groove 14 and an elastic first sealing member 15 that can partially protrude from the groove opening 141 of the first sealing groove 14. When the first protrusion 12 and the first recess 13 are engaged, the first sealing member 15 can abut against the first protrusion 12. Since the first sealing member 15 is elastic, the elastic force generated by the first sealing member 15 during the abutment process can effectively reduce the gap generated between the first sealing member 15 and the first protrusion 12, thereby improving the airtightness when the first protrusion 12 and the first recess 13 are engaged, which helps to improve the efficiency of the dual rotor engine.

[0047] The dual-rotor engine provided in this embodiment of the present invention uses the aforementioned rotor 10, which can improve air tightness, thereby improving the efficiency of air intake and gas compression, and thus improving the efficiency of the dual-rotor engine.

[0048] In some embodiments, see Figure 2The first sealing element 15 includes a first sealing sub-element 151 and a second sealing sub-element 152. The first sealing sub-element 151 is disposed at the bottom of the first sealing groove 14 and is elastic. The second sealing sub-element 152 is disposed on the side of the first sealing sub-element 151 near the groove opening 141, and a portion of the first sealing sub-element 151 protrudes from the groove opening 141. The second sealing sub-element 152 can separate the first sealing sub-element 151 from the first cam, thus reducing the requirements for high temperature resistance, friction resistance, and other properties of the material used to manufacture the first sealing sub-element 151. Furthermore, the second sealing sub-element 152 can achieve rebound with the help of the first sealing sub-element 151, thus reducing the requirements for rebound performance of the material used to manufacture the second sealing sub-element 152. In this way, functional separation can be achieved, reducing material requirements, and thus helping to improve the performance of both the first sealing sub-element 151 and the second sealing sub-element 152 while reducing manufacturing costs.

[0049] Specifically, the first sealing element 151 is made of an elastic, high-temperature and high-pressure resistant material, such as fluororubber, phenyl silicone rubber, borosilicate rubber, polyimide, etc. The second sealing element 152 is made of a wear-resistant metal, such as iron, high-carbon steel, alloy tool steel, stainless steel, etc.

[0050] In some specific embodiments, the second sealing element 152 is rotatable, which reduces the resistance exerted by the second sealing element 152 on the first protrusion 12, helps to stabilize the rotation of the rotor 10 and reduces the impact on the rotor speed, thereby improving the efficiency of the dual-rotor engine. It also reduces wear between the second sealing element 152 and the first protrusion 12, extending their service life. Specifically, the second sealing element 152 is cylindrical, which facilitates rotation and further reduces the resistance exerted by the second sealing element 152 on the first protrusion 12. Furthermore, the first sealing element 151 is also cylindrical, which avoids obstructing the rotation of the second sealing element 152, further reducing the resistance exerted by the second sealing element 152 on the first protrusion 12.

[0051] In some embodiments, see Figures 2 to 5 On at least one of the two axially opposite sides of the main body 11, a second sealing groove 17 is provided around the first through hole 16, and a second sealing element 18 is provided in the second sealing groove 17 surrounding the first through hole 16. When the drive shaft passes through the first through hole 16, the second sealing element 18 can seal the gap between the hole wall of the first through hole 16 and the drive shaft, thereby improving the airtightness of the dual-rotor engine and helping to improve the efficiency of the dual-rotor engine.

[0052] In some embodiments, see Figure 4 and Figure 5On two axially opposite sides of the main body 11, first lubrication grooves 20 extending circumferentially are formed respectively. A second through hole 21 is formed at the bottom of each first lubrication groove 20, connecting the two first lubrication grooves 20 on the two sides. The first lubrication grooves 20 and the second through hole 21 can form a lubrication oil passage, thereby facilitating lubrication of the rotor 10 and the interior of the dual-rotor engine housing. Specifically, on the two axially opposite sides of the main body 11, a second lubrication groove 23 is also formed along the line connecting the first through hole 16 and the first protrusion 12. The second lubrication groove 23 communicates with the first lubrication groove 20, thereby increasing the area of ​​the rotor 10 surface covered by the lubrication oil passage and further facilitating lubrication.

[0053] In some embodiments, see Figure 1 , Figure 2 , Figure 5 and Figure 6 A third through hole 22 is formed in the wall of the second through hole 21, connecting the second through hole 21 to the surface of the first recess 13. A lubricating oil passage connects to the surface of the first recess 13 to lubricate it. When the first recess 13 mates with the first protrusion 12, the lubricant on the surface of the first recess 13 can also lubricate the surface of the first protrusion 12. This reduces wear caused by the mating of the first recess 13 and the first protrusion 12, as well as wear caused by the mating of the first protrusion 12 with the housing of the dual-rotor engine, extending the service life of the rotor 10. It also helps improve the airtightness of the mating of the first recess 13 and the first protrusion 12, reducing gas leakage, and further improves the airtightness of the mating of the first protrusion 12 with the housing, thus increasing the efficiency of the dual-rotor engine.

[0054] In some specific embodiments, the surface of rotor 10 is machined using a slow wire EDM process, which helps to improve the surface roughness and thermal stability of rotor 10, and the slow wire EDM process has high machining accuracy, which helps to reduce wear.

[0055] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A rotor (10) for a dual-rotor (10) engine, characterized in that, include: Main body (11); First protrusion (12); The first recess (13) and the first protrusion (12) are disposed on the body (11) along the circumferential direction of the body (11); The first sealing groove (14) is provided on the surface of the first recess (13), and the length direction of the first sealing groove (14) is in the same direction as the axial direction of the main body; The first sealing element (15) is engaged in the first sealing groove (14) and partially protrudes from the opening (141) of the first sealing groove (14). The first sealing element (15) is elastic.

2. The rotor (10) according to claim 1, characterized in that, The first seal (15) is rotatably disposed in the first sealing groove (14).

3. The rotor (10) according to claim 1, characterized in that, The first sealing element (15) includes a first sealing sub-element (151) and a second sealing sub-element (152). The first sealing sub-element (151) is disposed at the bottom of the first sealing groove (14) and is elastic. The second sealing sub-element (152) is disposed on the side of the first sealing sub-element (151) near the groove opening (141) and the first sealing sub-element (151) partially protrudes from the groove opening (141).

4. The rotor (10) according to claim 1, characterized in that, The first sealing groove (14) is provided on the side of the first recess (13) in the circumferential direction of the main body (11), near the end of the first recess (13).

5. The rotor (10) according to claim 1, characterized in that, The height of the first seal (15) protruding from the groove (141) is 4mm to 8mm.

6. The rotor (10) according to claim 1, characterized in that, The wall thickness of the groove forming the first sealing groove (14) is greater than or equal to 3.5 mm.

7. The rotor (10) according to claim 1, characterized in that, The main body (11) has a first through hole (16) extending along the axial direction for connection with the dual rotor (10) engine; on at least one of the two opposite sides of the main body (11) along the axial direction, a second sealing groove (17) is provided around the first through hole (16), and a second sealing element (18) is provided in the second sealing groove (17) surrounding the first through hole (16).

8. The rotor (10) according to claim 1, characterized in that, On two opposite sides of the main body (11) along the axial direction, a first lubrication groove (20) extending in the circumferential direction is formed respectively. A second through hole (21) is formed at the bottom of the first lubrication groove (20). The second through hole (21) connects the two first lubrication grooves (20) on the two sides.

9. The rotor (10) according to claim 8, characterized in that, The second through hole (21) has a third through hole (22) in its wall, and the third through hole (22) connects the second through hole (21) with the surface of the first recess (13).

10. A dual-rotor (10) engine, characterized in that, It includes a rotor (10) as described in any one of claims 1-9, a housing, and a drive shaft, wherein the drive shaft is disposed in the housing, and the two rotors (10) are respectively sleeved on two different drive shafts for cooperation.

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