A continuously circulating rotary engine with rolling elements

Abstract

A kind of continuous circulation rotary engine of rolling child, it is characterized in that, including three sets of variable volume cavities of booster (1), compressor (2), power machine (3) arranged coaxially in turn, three sets of cavity inside are set through same output shaft (4);Each variable volume cavity inside is shaped with mutually interconnected large circle cavity (101) and small circle cavity (102), three large circle cavities are respectively equipped with eccentric rotor assembly (100a) (100b) (100c), three small circle cavities are respectively adapted to install circular band pass slot cylindrical member (8), output shaft (4) and the eccentric cam (5) of each cavity are rigidly connected;Power machine (3) and compressor (2) are sealed and arranged hollow cylindrical combustion chamber (17) between, combustion chamber is respectively communicated with the internal cavity of compressor (2), power machine (3);Booster rotor assembly and power machine rotor assembly are oppositely arranged on output shaft with 180 °, and the mass of two is matched.

Description

Technical Field

[0001] This invention relates to the field of engine technology, specifically to a rolling rotor continuous cycle rotary engine, which is particularly suitable for low-altitude economic aircraft, small aircraft, general-purpose light power equipment and other technical fields. Background Technology

[0002] Currently, mainstream engines on the market are mainly divided into three categories: reciprocating piston internal combustion engines, triangular rotor engines, and aero-turbine engines. Traditional reciprocating piston internal combustion engines rely on the reciprocating linear motion of pistons to generate power, which has technical drawbacks such as complex structure, numerous parts, low power-to-weight ratio due to intermittent four-stroke operation, easy wear and tear on the valve train, and large mechanical transmission losses. Although triangular rotor engines simplify some transmission structures, they are difficult to seal, require strict machining precision, are prone to carbon buildup in the combustion chamber, and have poor dynamic balance performance, making it difficult to operate stably for a long time. Although aero-turbine engines have excellent power-to-weight ratios, their internal structure is extremely complex, manufacturing costs are high, and subsequent maintenance and repair are difficult, making them unsuitable for low-cost, miniaturized power applications such as low-altitude economy.

[0003] In summary, existing engines generally suffer from drawbacks such as high manufacturing costs, difficulty in balancing power-to-weight ratio and overall size, large operating vibrations, complex electronic control systems, unresolved carbon buildup issues, and high maintenance costs. They cannot simultaneously meet the comprehensive requirements of easy processing, high power density, stable operation, and low-cost maintenance. Therefore, there is an urgent need to develop a new type of engine with a simple structure, convenient processing, excellent power-to-weight ratio, and stable operation. Summary of the Invention

[0004] To address the numerous technical deficiencies in existing technologies, this invention provides a continuous circulating rotary engine with a rolling rotor. The aim is to simplify component composition, reduce processing and maintenance costs, improve the overall power-to-weight ratio of the engine, and achieve continuous and stable power output by optimizing the overall engine structure and working cycle mode. At the same time, it optimizes the rotor dynamic balance structure to solve technical problems such as difficult sealing, severe carbon buildup, and large operating vibration in traditional engines.

[0005] I. Technical Solution A type of continuously circulating rotary engine with a rolling rotor is composed of three sets of variable-volume cavities with identical structural designs but different internal dimensions, arranged sequentially. Figure 2 According to the airflow and work sequence, they are booster (1), compressor (2), and power unit (3), such as Figure 1 The three variable volume cavities are arranged coaxially and have the same output shaft (4) running through them. The output shaft and the eccentric cam (5) inside each cavity are rigidly connected to achieve synchronous rotation.

[0006] The variable volume cavity is internally formed with a large circular cavity (101) and a small circular cavity (102) that are interconnected; for example Figure 2 An eccentric rotary rotor assembly (100a), (100b), and (100c) is assembled inside the large circular cavity. This rotor assembly consists of a rotor ring (6), a baffle (7), and a central eccentric cam (5). The baffle (7) and the rotor ring (6) are rigidly connected as a whole. The eccentric cam (5) is coaxially positioned at the center of the rotor ring. A circular cylindrical component (8) with a through slot is fitted inside the small circular cavity (102). The rotor baffle (7) is movably inserted into the through slot (103) of the cylindrical component with a through slot. When the eccentric cam (5) rotates, it drives the rotor ring (6) and the baffle (7) to move together, forming a continuously variable sealed working cavity in conjunction with the cylindrical component with a through slot (8). The large circular cavity is divided into two closed chambers (104) and (105) whose volumes change with rotation.

[0007] like Figure 1 The power unit consists of a power unit rear cover (9), a power unit housing (10), a power unit front cover (11), and an internally adapted power unit rotor assembly (100c) and a power unit slotted cylindrical component (8); the compressor consists of a compressor rear cover (12), a compressor housing (13), a compressor front cover (14), and an internally adapted compressor rotor assembly (100b) and a compressor slotted cylindrical component (8); the booster consists of a compressor front cover (14), a booster housing (15), a booster front cover (16), and an internally adapted booster rotor assembly (100a) and a booster slotted cylindrical component (8).

[0008] A hollow cylindrical combustion chamber (17) is sealed between the front cover (11) of the power engine and the rear cover (12) of the compressor. Its internal structure is similar to that of the combustion chamber of a turbojet engine. Spark plugs (18) for ignition and fuel injectors (19) for fuel injection are respectively sealed on both sides of the combustion chamber. The rotor assembly inside the turbocharger and the rotor assembly of the power engine are arranged at 180° opposite each other on the output shaft, and their masses are matched to counteract the inertial centrifugal force generated by high-speed rotation.

[0009] The gas passage layout is as follows: Figure 4 An external air inlet (106) is opened on one side of the compressor housing (1), and an internal air inlet (107) and a matching internal airflow channel (108) are provided on the compressor front cover (14). An internal connecting air hole (109) (110) is opened on the compressor rear cover (12) and the dynamo front cover (11). Two connecting air holes are provided in the combustion chamber, which are sealed and connected to the compressor rear cover air hole (109) and the dynamo front cover air hole (110) respectively. An exhaust port (111) is opened on the other side of the dynamo housing. The whole machine has no traditional valve-type valve distribution mechanism, and all air holes are normally open.

[0010] II. Working Principle This engine adopts a continuous cycle operating mode, abandoning the traditional four-stroke power logic of internal combustion engines, and achieving continuous and stable combustion inside the combustion chamber. Figure 4 Outside air enters the cavity through the compressor housing inlet (106), and is initially compressed as the compressor rotor assembly (100a) rotates. It then enters the compressor (2) through the compressor front cover inlet (107) and the internal airflow channel (108). In this invention, the volume of the compressor (1) can be larger or smaller than the volume of the power unit (3). Both ratios can achieve the technical effect of this invention. However, in practical applications, it is recommended that the volume of the compressor (1) be larger than the volume of the power unit (3) to increase the intake volume of the engine and improve combustion efficiency. The volume ratio of the compressor (1) to the compressor (2) is 50:1. After the air is compressed, a high compression ratio of 50:1 is achieved. When the compressor rotor assembly (100b) rotates and gradually approaches the zero-degree position, the cavity volume gradually decreases. The high-pressure air in the cavity is transported to the combustion chamber through the air hole (109) of the compressor rear cover (12).

[0011] Inside the combustion chamber, high-pressure air and fuel continuously injected by the fuel injector are fully mixed. After a single ignition by the spark plug, continuous and stable combustion is achieved, generating high-temperature and high-pressure gas. Since the volume of the power unit (3) chamber is much larger than that of the compressor (2) chamber, a greater power output is achieved. The high-temperature and high-pressure gas expands along the volume gradient towards the power unit side. The gas enters the power unit through the air hole (110) of the power unit front cover (11), driving the power unit rotor assembly (100c) to rotate, thereby driving the output shaft to output rotational power.

[0012] The output shaft drives the compressor (2) and booster (1) to run continuously through a rigid connection, forming a continuous cycle power output closed loop; the exhaust gas after the work is completed is discharged through the exhaust port (111) of the power machine housing. The whole machine adopts a continuous cycle form. The intake, compression, combustion and exhaust processes of the engine are completed by the rotation of the rotor assembly to achieve volume change. There is no four-stroke intermittent work process. Beneficial effects

[0013] 1. Significantly reduced processing and manufacturing costs: The core components of the engine are all regular geometric structures such as circles and squares, which can be precision-machined by conventional machining equipment such as lathes and milling machines. The rotor assembly adopts a split assembly structure, and the processing technology of each component is simple, without the need for high-precision machining equipment, effectively reducing production and processing costs.

[0014] 2. Excellent power-to-weight ratio: It adopts a continuous cycle power-on mode, eliminating the power loss caused by the intermittent power-on of the four-stroke cycle, and its power-to-weight ratio is comparable to that of an aircraft turbine engine; the eccentric rotor structure can stably achieve high-speed operation of 20,000 rpm, further improving the overall power density and realizing small size and high power output, perfectly adapting to low-altitude economic power application scenarios.

[0015] 3. Simple and highly reliable overall structure: The number of parts is greatly reduced, eliminating the complex valve train mechanism such as valves and camshafts in traditional engines. There are no reciprocating linear motion parts, and all parts are rotary motion components. The mechanical transmission loss is small, the fatigue wear of parts is low, and the service life of the whole machine is effectively extended.

[0016] 4. Smooth and vibration-free operation: The booster rotor assembly and the power unit rotor assembly are arranged at 180° opposite each other and are of matched mass. During high-speed rotation, the inertial centrifugal forces cancel each other out, achieving dynamic balance of the whole machine. There is no obvious vibration during operation, and the running stability is extremely strong.

[0017] 5. Optimize sealing and carbon buildup issues: The rotor seal structure is simpler than traditional triangular rotors and piston seals, significantly reducing the difficulty of sealing; during rotor movement, all working surfaces are in full contact, with no dead corners for carbon buildup, and it has self-cleaning properties, preventing carbon buildup from affecting engine operating efficiency.

[0018] 6. No electronic control system: It adopts a continuous combustion cycle process with single ignition and continuous fuel injection. It does not require ECU to precisely control the ignition and fuel injection phase, which simplifies the structure to a configuration without an electronic control system, reduces the occurrence rate of electronic control failures, and improves the engine's adaptability to complex operating conditions.

[0019] 7. Low maintenance and repair costs: The machine adopts a segmented shell structure, which can be assembled simply by parallel alignment, making disassembly and assembly convenient; the number of vulnerable parts is very small, and the efficiency of later maintenance and parts replacement is high, which greatly reduces the later maintenance costs.

[0020] 8. Linear and smooth power output: The continuous combustion and continuous power operation mode ensures that the power output is free of pulse fluctuations and has a linear and smooth output characteristic, which can meet the needs of equipment with high requirements for power stability.

[0021] 9. Highly efficient and controllable compression ratio: By matching the volume of the turbocharger and the compressor, a stable ultra-high compression ratio of 50:1 can be achieved, which makes the fuel and air mix more fully, improves combustion efficiency and overall engine thermal efficiency, and optimizes fuel economy.

[0022] 10. Strong modular adaptability: The three sets of variable volume cavity structures have the same shape, with only differences in size, which facilitates modular mass production. Different power level models can be quickly derived by adjusting the cavity volume to adapt to the power needs of multiple scenarios. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall components of the present invention; Figure 2 This is a schematic diagram of the variable volume cavity structure of the present invention; Figure 3This is a schematic diagram of the eccentric rotor structure of the present invention; Figure 4 This is a schematic diagram of the gas flow path of the present invention; Detailed Implementation

[0024] The technical solution of the present invention will be described completely, clearly and accurately below with reference to specific embodiments: The core of the present invention is a continuous cycle rolling rotor engine, which consists of three sets of coaxially arranged variable volume rolling rotor cavities, namely, a booster (1), a compressor (2), and a power unit (3) in sequence. The three cavities share a common output shaft (4), which is inserted into the shaft hole (114) of the eccentric cam (5) and rigidly fixedly connected to the eccentric cam (5) inside each cavity to achieve synchronous rotation.

[0025] Assembly: First, assemble the three rotor assemblies, such as... Figure 3 Insert the protruding end (112) of the baffle (7) into the corresponding groove (113) of the rotor ring (6) and fix it rigidly. Then insert the eccentric convex shaft (5) into the rotor ring (6) to form the rotor assembly (100a) (100b) (100c). The installation method of the three rotor assemblies of the booster, compressor and power machine is the same.

[0026] Assembly process of the working machine: such as Figure 1 The power unit housing (10) is aligned and sealed with the power unit rear cover (9). Then, the power unit rotor assembly (100c) and the power unit slotted cylindrical component (8) are installed. After the components are assembled, the output shaft (4) is inserted into the hole (114) of the eccentric cam shaft of the rotor assembly and fixed with liquid nitrogen cold fitting. It is rigidly connected with the eccentric cam (5). Finally, the power unit front cover (11) is sealed and installed. After the power unit is assembled, the combustion chamber cavity component (17) is installed on one side of the power unit front cover (11) and then precisely aligned and assembled with the compressor.

[0027] Compressor assembly process: Align and seal the compressor rear cover (12) with the combustion chamber component (17), then connect the compressor housing (13), install the compressor rotor assembly (100b) and the compressor slotted cylindrical component (8), the output shaft (4) is still cold-installed with liquid nitrogen and is rigidly connected with the eccentric cam (5), and finally seal and install the compressor front cover (14).

[0028] The compressor assembly process is as follows: First, align and assemble the compressor housing (15) with the compressor front cover (14) as the rear support shell, then install the compressor rotor assembly (100a) and the compressor cylindrical component with through groove (8). The output shaft (4) is still cold-installed with liquid nitrogen and is rigidly connected with the eccentric cam (5). Finally, seal and install the compressor front cover (16).

[0029] After the entire housing and internal components are assembled, bearing seats (20) with built-in bearings are installed on the outer surfaces of the outermost power engine rear cover (9) and the turbocharger front cover (16) respectively, so that the output shaft can achieve stable rotation support through the bearing (21); finally, spark plugs (18) and fuel injectors (19) are sealed and installed at preset positions on both sides of the combustion chamber to ensure that the combustion chamber is sealed and there is no gas leakage.

[0030] The combustion chamber seal is located between the front cover (11) of the dynamometer and the rear cover (12) of the compressor. During assembly, it is necessary to ensure that the two connecting air holes of the combustion chamber are precisely aligned and sealed with the air holes (109) of the rear cover of the compressor and the air holes (110) of the front cover of the dynamometer. All air passage connection parts are sealed to prevent air leakage. All air holes are kept open.

[0031] When the machine starts up, fuel is continuously injected into the combustion chamber through the fuel injector (19), and at the same time, the output shaft rotates to drive the three rotor assemblies to start rotating initially; such as Figure 4 Outside air is drawn in and initially compressed through the intake port (106) of the compressor (1). Then, it is sent into the compressor (2) through holes A and B of the compressor front cover (14) to complete the secondary high-pressure compression. The high-pressure air then enters the combustion chamber through hole C and mixes with fuel. Then, the spark plug (18) ignites the inside of the combustion chamber and continues to burn, producing high-temperature and high-pressure gas. The gas drives the rotor assembly of the power machine (3) to rotate continuously through hole D of the power machine front cover (11), driving the output shaft to output power stably. At this time, the power machine (3) performs work to achieve shaft power output. The exhaust gas after the work is completed is discharged synchronously through the power machine exhaust port (111) to achieve continuous cycle operation.

[0032] In the processing stage of this invention, all the circular cavities (101) (102), rotor ring (6), slotted cylindrical component (8), eccentric cam (5), and output shaft (4) can be precision machined by lathe. The baffle (7) and the segmented housing (9) (10) (11) (12) (13) (14) (15) (16) can be produced by conventional machining processes. The simple components greatly reduce the assembly difficulty. During operation, the rotor dynamic balance structure eliminates operating vibration, leaves no carbon residue, and has no complex valve train mechanism, ensuring long-term efficient and stable operation of the engine.

Claims

1. A rolling rotor continuous cyclic rotary engine, characterized in that, The system includes three sets of variable volume chambers arranged coaxially in sequence: a booster (1), a compressor (2), and a power unit (3). The same output shaft (4) runs through the interior of each set of chambers. Each set of variable volume chambers has interconnected large circular cavities (101) and small circular cavities (102). Eccentric rotor assemblies (100a), (100b), and (100c) are respectively installed in the three large circular cavities. Circular cylindrical components (8) with through slots are respectively installed in the three small circular cavities. The output shaft (4) is rigidly connected to the eccentric cams (5) of each chamber. A hollow cylindrical combustion chamber (17) is sealed between the power unit (3) and the compressor (2). The combustion chamber is connected to the interior chambers of the compressor (2) and the power unit (3). The booster rotor assembly and the power unit rotor assembly are arranged opposite each other at 180° on the output shaft, and their masses are matched.

2. The rolling rotor continuous circulating rotary engine according to claim 1, characterized in that, The eccentric rotor assembly (100a), (100b), and (100c) consists of a rotor ring (6), a baffle (7), and an eccentric cam (5). The baffle (7) is rigidly fixed to the rotor ring (6), and the eccentric cam (5) is coaxially located at the center of the rotor ring (6). The rotor baffle (7) is movably inserted into the through slot (103) of the cylindrical component with a through slot. When the eccentric rotor assembly (100a), (100b), and (100c) rotate in the stator housing cavity, they cooperate to form two independent sealed working chambers (104) and (105) with continuously variable volumes.

3. A rolling rotor continuous circulating rotary engine according to claim 1, characterized in that, The power unit (3) is composed of a power unit rear cover (9), a power unit housing (10), a power unit front cover (11), an internal power unit rotor assembly (100c), and a power unit slotted cylindrical component (8); the compressor (2) is composed of a compressor rear cover (12), a compressor housing (13), a compressor front cover (14), an internal compressor rotor assembly (100b), and a compressor slotted cylindrical component (8); the booster compressor (1) is composed of a compressor front cover (14), a booster compressor housing (15), a booster compressor front cover (16), an internal booster compressor rotor assembly (100a), and a booster compressor slotted cylindrical component (8).

4. A rolling rotor continuous circulating rotary engine according to claim 1, characterized in that, The engine adopts a continuous cycle working mode, and continuous combustion is achieved inside the combustion chamber (17). The compressor (2) continuously delivers high-pressure air to the combustion chamber (17). The high-temperature and high-pressure gas generated by the combustion of oil and gas flows into the larger working machine (1) to drive the rotor to rotate. The output shaft (4) synchronously drives the compressor (2) and the booster (1) to operate, achieving continuous power output without four-stroke intermittent.

5. A rolling rotor continuous circulating rotary engine according to claim 1, characterized in that, An external air inlet (106) is provided on one side of the compressor housing (15). The compressor front cover (14) is provided with an internal air inlet (107) and an airflow channel (108). The compressor rear cover (12) and the dynamo front cover (11) are both provided with internal connecting air holes (109) (110). The combustion chamber is provided with two corresponding air holes, which are sealed and connected to the compressor rear cover air hole (109) and the dynamo front cover air hole (110) respectively. An exhaust port (111) is provided on the other side of the dynamo housing. The whole machine has no valve distribution mechanism, and all air holes are kept open.

6. A rolling rotor continuous circulating rotary engine according to claim 1, characterized in that, The outer sides of the power unit rear cover (9) and the booster front cover (16) are respectively equipped with bearing seats (20) with built-in bearings (21), and the output shaft (4) is rotated and supported by the bearings (21).

7. A rolling rotor continuous circulating rotary engine according to claim 1, characterized in that, Spark plugs (18) and fuel injectors (19) are sealed on both sides of the combustion chamber (17). Its internal structure is similar to that of a turbojet engine combustion chamber. The combustion chamber is continuously burned by a single ignition of the spark plug, and fuel is continuously injected with fuel through the fuel injector. There is no need to adjust the ignition and fuel injection phase.

8. A rolling rotor continuous circulating rotary engine according to claim 1, characterized in that, The volume ratio of the booster (1) to the compressor (2) reaches 50:1, achieving an air compression ratio of 50:

1. After the air is initially compressed by the booster, it is then compressed again by the compressor before entering the combustion chamber (17).

9. A rolling rotor continuous cyclic rotary engine according to claim 1, characterized in that, The three variable volume chambers have the same structure and shape, only the internal volume size is different. The volume of the power engine (3) chamber is much larger than that of the compressor (2) chamber, thus achieving greater power output; the volume of the booster (1) chamber is larger than that of the power engine (3) chamber, thus allowing more air to enter and improving combustion efficiency.

Images