Rotary combustion jet engine

Abstract

The present invention relates to the technical field of power machinery, and specifically to a rotary combustion jet engine, comprising a stator component and a rotor component, wherein the stator component comprises a casing, and the rotor component comprises an air compressor, a rotary fuel pump and a rotary combustion chamber which are rotatably connected to the inside of the casing and are fixedly connected in sequence; the air compressor comprises a first centrifugal impeller, a radial impeller and a second centrifugal impeller which are connected to a hollow shaft in sequence; the rotary fuel pump comprises a radial fuel delivery pump connected to the hollow shaft, a sealing ring is provided between the housing of the radial fuel delivery pump and the casing, and a fuel inlet which is connected to the blade cavity of the radial fuel delivery pump is provided on the casing; different inlets of the pneumatic fuel nozzle are connected to the fuel and high-pressure air respectively; the side wall of the rotary combustion chamber is uniformly distributed with inclined injection gas nozzles in the circumferential direction, and the side of the casing is provided with an exhaust port for exhausting exhaust gas. The engine of the present application has high power density, light weight, high efficiency, simple structure, low manufacturing cost and high reliability.

Description

Technical Field

[0001] The invention relates to the technical field of power machinery, and in particular to a rotary combustion jet engine. Background Art

[0002] There are two main types of thermal engines currently in common use: piston engines and jet engines. Piston engines have many parts, are heavy, and have a limited speed at which the piston can reciprocate to produce work. Although jet engines consume more fuel than piston engines at low speeds, their excellent high-speed performance has quickly replaced piston engines and become the mainstream of aviation engines. However, existing turbojet engines still have disadvantages such as many parts, expensive turbine blades, poor low-speed performance, and the problem of high-temperature resistance of turbine blades. Summary of the invention

[0003] The purpose of the present invention is to provide a rotary combustion jet engine with high power density, light weight, high efficiency, simple structure, low manufacturing cost and high reliability in view of the above-mentioned problems and shortcomings.

[0004] In order to achieve the above-mentioned object of the invention, the technical solution of the present invention is:

[0005] A rotary combustion jet engine comprises a stator component and a rotor component, wherein the stator component comprises a casing, and the rotor component comprises an air compressor, a rotary fuel pump and a rotary combustion chamber which are rotatably connected to the inside of the casing and are fixedly connected in sequence; the air compressor comprises a first centrifugal impeller, a radial impeller and a second centrifugal impeller which are connected to a hollow shaft in sequence, the air inlet position of the first centrifugal impeller is an air inlet at the front end of the casing, the air inlet position of the second centrifugal impeller is a plurality of air inlets on the rear end casing, the air outlet position of the radial impeller is the inside of the hollow shaft, and a plurality of air inlets are arranged in the circumference of the hollow shaft; the rotary fuel pump comprises a radial fuel delivery pump connected to the hollow shaft, the casing of the radial fuel delivery pump is connected to the casing A sealing ring is provided between them, and the sealing ring is fixed on the casing. The casing is provided with a fuel inlet connected to the blade cavity of the centripetal fuel delivery pump, and the oil outlet of the centripetal fuel delivery pump is connected to the peripheral annular cavity of the pneumatic fuel nozzle arranged in the hollow shaft, the central hole inlet section of the pneumatic fuel nozzle is connected to the inside of the front section of the hollow shaft, and the peripheral annular cavity outlet is connected to the central hole outlet section; a radial seal is provided between the rotating combustion chamber and the casing, and a spark plug is provided on its side wall, and a spark plug conductive ring passing through the rotating combustion chamber is connected to the outer side of the spark plug, and the spark plug conductive ring is in sliding contact with a carbon brush connected to the casing, and the side wall of the rotating combustion chamber is evenly distributed with inclined gas nozzles in the circumferential direction, and an exhaust port for exhausting exhaust gas is provided on the side of the casing.

[0006] Furthermore, in the above-mentioned rotary combustion jet engine, the rotary combustion chamber includes a combustion chamber shell that tapers from the middle to the upper and lower ends, and the inner wall of the combustion chamber shell is circumferentially evenly distributed with heat dissipation ribs that extend continuously from top to bottom, the spark plug is installed on the side wall at the inlet of the combustion chamber shell, the gas nozzle is arranged in the middle circumference of the combustion chamber shell, and the pneumatic fuel nozzle is connected to the hollow shaft through a plurality of radial support plates, and its lower end extends into the upper opening of the combustion chamber shell, and the upper end of the heat dissipation rib corresponds to the radial support plate of the outer ring of the pneumatic fuel nozzle.

[0007] Furthermore, in the above-mentioned rotary combustion jet engine, the combustion chamber shell has an arc-shaped transition from the middle to the upper and lower ends, the channel between the adjacent heat dissipation ribs on the upper inner wall and the lower inner wall of the combustion chamber shell is cooling air channel one, and the channel between the adjacent heat dissipation ribs on the middle inner wall of the combustion chamber shell is cooling air channel two.

[0008] Furthermore, in the above-mentioned rotary combustion jet engine, a high-pressure plunger fuel pump is provided in the blade cavity of the centripetal fuel delivery pump, the plunger pump oil inlet on the high-pressure plunger fuel pump is located inside the blade cavity of the centripetal fuel delivery pump, the oil outlet end of the high-pressure plunger fuel pump is connected to the outer peripheral annular cavity of the pneumatic fuel nozzle arranged in the hollow shaft, and a cam is provided on the side of the boost column of the high-pressure plunger fuel pump, and the cam is connected to the cam handle passing through the casing.

[0009] Furthermore, in the above-mentioned rotary combustion jet engine, the oil outlet end of the high-pressure plunger fuel pump is connected to a one-way valve, a pressure stabilizing chamber and a pressure valve in sequence, and the pressure stabilizing chamber is provided with oil inlet and outlet holes, and a pressure stabilizing spring and a piston connected to the pressure stabilizing spring are provided inside the pressure stabilizing chamber.

[0010] Furthermore, in the above-mentioned rotary combustion jet engine, the casing is configured as a left-right symmetrical two-half structure, and a plurality of bolt holes are provided on the mating surface of the casing.

[0011] Furthermore, in the above-mentioned rotary combustion jet engine, guide plates are provided on the inner wall of the casing at positions corresponding to the first centrifugal impeller, the radial impeller and the second centrifugal impeller.

[0012] Furthermore, in the above-mentioned rotary combustion jet engine, the hollow shaft is arranged into two sections, front and rear sections, and are connected by flanges and bolts, the rear section of the hollow shaft is also connected to the rotary combustion chamber by flanges and bolts, and the front section of the hollow shaft and the rotary combustion chamber are connected to the casing by bearings, and the bearings are connected to the casing or to radial support ribs in the casing.

[0013] Beneficial effects of a rotary combustion jet engine of the present invention:

[0014] Compared with a piston engine, the rotary combustion jet engine of the present invention has fewer parts and does not require a lubrication system. It can continuously burn and jet, has stable operation, low vibration, low noise, high thermal efficiency, and can reach a high rotation speed. Compared with existing turbojet engines, it does not require high-temperature turbine parts, and the rotary combustion chamber also serves as a turbine to provide torque. Therefore, the rotary combustion jet engine of the present invention has high power density, light weight, high efficiency, simple structure, low manufacturing cost, and high reliability. If used as an automobile engine, it can significantly increase the speed.

[0015] The combustion chamber of the rotary combustion jet engine of the present invention is rotating. By arranging heat dissipation ribs on the inner wall of the combustion chamber shell and making the channels between the heat dissipation ribs correspond to the cooling air circumferentially of the pneumatic fuel nozzle, cooling air can be introduced and formed into an air film on the wall of the combustion chamber, thereby effectively solving the problems of combustion chamber cooling and ablation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the principle structure of a rotary combustion jet engine according to an embodiment of the present invention.

[0017] Figure 2 The figure is a schematic diagram of the fuel supply principle structure of a rotary combustion jet engine according to an embodiment of the present invention.

[0018] Figure 3 2 is a schematic diagram of a top view and cross-section structure of a rotary combustion chamber according to an embodiment of the present invention.

[0019] In the figure: 1 is a first centrifugal impeller, 2 is a centrifugal impeller, 3 is a centrifugal fuel delivery pump, 4 is a high-pressure plunger fuel pump, 5 is a cam, 6 is a rotary combustion chamber, 7 is a gas nozzle, 8 is a bearing, 9 is a flange, 10 is a spark plug, 11 is a spark plug conductive ring, 12 is a carbon brush, 13 is a pneumatic fuel nozzle, 14 is a casing, 15 is an air inlet, 16 is an exhaust port, 17 is a cooling air channel one, 18 is a cooling air channel two, 19 is a cam handle, 20 is a fuel inlet, 21 is a bolt, 22 is a heat dissipation rib plate, 23 is a non-return valve, 24 is a centrifugal fuel delivery pump blade cavity, 28 is a plunger pump inlet, 29 is a second centrifugal impeller, 30 is a bolt hole, 31 is a pressure stabilizing chamber, 31-1 is a piston, 31-2 is a pressure stabilizing spring, 32 is a guide plate, 33 is a radial seal, 34 is a pressure valve, 35 is a sealing ring, and 36 is a hollow shaft. DETAILED DESCRIPTION

[0020] The rotary combustion jet engine of the present invention is described in more detail below with reference to the accompanying drawings and through specific implementation methods.

[0021] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as a limitation on the present invention.

[0022] See also Figure 1-Figure 3 The present embodiment discloses a rotary combustion jet engine, comprising a stator component and a rotor component, the stator component comprising a casing, the rotor component comprising an air compressor, a rotary fuel pump and a rotary combustion chamber which are rotatably connected to the inside of the casing and are fixedly connected in sequence; the air compressor comprises a first centrifugal impeller, a radial impeller and a second centrifugal impeller which are connected to the hollow shaft in sequence, the air inlet position of the first centrifugal impeller is an air inlet at the front end of the casing, the air inlet position of the second centrifugal impeller is a plurality of air inlets on the rear end casing, the air outlet position of the radial impeller is the inside of the hollow shaft, a plurality of air inlets are arranged in the circumferential direction of the hollow shaft, the air is first pressed to the circumferential side by the first centrifugal impeller and the second centrifugal impeller, and then is compressed by the radial impeller and enters the inside of the hollow shaft through the air inlet on the hollow shaft; the rotary fuel pump comprises a radial fuel delivery pump connected to the hollow shaft, a sealing ring is arranged between the casing of the radial fuel delivery pump and the casing, the sealing ring is fixed to the casing to prevent the fuel from entering the casing, the casing is provided with a sealing ring which is connected to the radial fuel delivery pump and the casing. The oil inlet of the oil delivery pump is connected to the blade cavity, the oil outlet end of the centripetal oil delivery pump is connected to the peripheral annular cavity of the pneumatic fuel nozzle arranged in the hollow shaft, the central hole inlet section of the pneumatic fuel nozzle is connected to the inside of the front section of the hollow shaft, the peripheral annular cavity outlet is connected to the central hole outlet section, and the high-speed flowing air drives the fuel to be sprayed out through the jet action, and is mixed with the fuel to form a combustible mixture in an atomized state; a radial seal is provided between the rotary combustion chamber and the casing, the radial seal can seal the exhaust gas discharged from the rotary combustion chamber to prevent the exhaust gas from entering the gap between the casing and the rotary combustion chamber, a spark plug is provided on the side wall of the rotary combustion chamber, and a spark plug conductive ring passing through the rotary combustion chamber is connected to the outer side of the spark plug, the spark plug conductive ring is in sliding contact with the carbon brush connected to the casing, and can ensure that the spark plug is powered on and ignited, the side wall of the rotary combustion chamber is evenly distributed with inclined gas nozzles in the circumferential direction, and the inclined injection of gas can drive the rotor part as a whole to rotate at high speed, and an exhaust port for exhausting exhaust gas is provided on the side of the casing.

[0023] The working principle of the centrifugal impeller in this embodiment is opposite to that of the centrifugal impeller. The centrifugal impeller has axial air intake and radial exhaust. The centrifugal force generated by the high-speed rotation of the centrifugal impeller increases the speed of the gas, improves the kinetic energy, and converts the kinetic energy into pressure energy. The centrifugal impeller has radial air intake and axial exhaust. The air inlet is large and the exhaust port is small. The high-speed rotation of the centrifugal impeller compresses the air toward the axis, increases the gas speed and kinetic energy, and converts the kinetic energy into pressure energy. The compression of the centrifugal impeller is similar to the compression of a ramjet. Ramjet compression requires high-speed forward flight, while the compression of the centrifugal impeller requires high-speed circular rotation compression.

[0024] In this embodiment, preferably, the rotating combustion chamber includes a combustion chamber shell that tapers from the middle to the upper and lower ends, and the inner wall of the combustion chamber shell is circumferentially evenly distributed with heat dissipation ribs that extend continuously from top to bottom. The spark plug is installed on the side wall at the inlet of the combustion chamber shell, and the gas nozzle is arranged in the middle circumference of the combustion chamber shell to facilitate the expansion of the combustible mixture. The pneumatic fuel nozzle is connected to the hollow shaft through a plurality of radial support plates, and its lower end extends into the upper opening of the combustion chamber shell. The upper end of the heat dissipation rib corresponds to the radial support plate of the outer circle of the pneumatic fuel nozzle. A small amount of high-pressure air enters the pneumatic fuel nozzle from the middle, and most of the high-pressure air enters between the heat dissipation ribs to cool the combustion chamber shell. Most of the air cools the combustion chamber and finally enters the combustion chamber to participate in combustion, which is equivalent to continuing to mix and burn with the fuel after preheating, so that the fuel burns fully.

[0025] In this embodiment, specifically, the combustion chamber shell has an arc-shaped transition from the middle to the upper and lower ends. The channel between adjacent heat dissipation ribs on the upper inner wall and the lower inner wall of the combustion chamber shell is cooling air channel one, and the channel between adjacent heat dissipation ribs on the middle inner wall of the combustion chamber shell is cooling air channel two.

[0026] In the present embodiment, preferably, a high-pressure plunger fuel pump is provided in the vane cavity of the centripetal fuel delivery pump, the plunger pump oil inlet on the high-pressure plunger fuel pump is located inside the vane cavity of the centripetal fuel delivery pump, the oil outlet end of the high-pressure plunger fuel pump is connected to the peripheral annular cavity of the pneumatic fuel nozzle arranged in the hollow shaft, a cam is provided on the side of the boost column of the high-pressure plunger fuel pump, and the cam is connected to a cam handle passing through the casing. When the multiple high-pressure plunger pumps in the centripetal fuel delivery pump rotate at a high speed with the centripetal fuel delivery pump, the boost columns on each high-pressure plunger pump are compressed by the cam in turn, which can increase the fuel pressure, and the other end of the cam handle passes through the casing. The setting of the high-pressure plunger fuel pump can further increase the fuel pressure, and the angle of the cam handle can be conveniently adjusted outside the casing to control the size of the throttle, and the size of the throttle can be adjusted in real time by adjusting the cam handle from the outside. The cam handle is a throttle controller, which is used to adjust the size of the throttle and shut down.

[0027] In this embodiment, preferably, the oil outlet end of the high-pressure plunger fuel pump is connected with a one-way valve, a pressure stabilizing chamber and a pressure valve in sequence. The one-way valve allows fuel to flow in only one direction. The pressure stabilizing chamber is provided with oil inlet and outlet holes, and a pressure stabilizing spring and a piston connected to the pressure stabilizing spring are provided inside the pressure stabilizing chamber. Since there is a gap between the cam and the boost column in rotational contact, the fuel supply pressure may be unstable. The pressure stabilizing chamber is provided between the outlet of the high-pressure plunger fuel pump and the one-way valve, which can reduce the fluctuation of the fuel supply pressure. When the high-pressure plunger fuel pump presses the fuel into between the outlet of the high-pressure plunger fuel pump and the one-way valve, the fuel pressure acts on the piston of the pressure stabilizing chamber, causing the piston to move and compress the pressure stabilizing spring. When the high-pressure plunger fuel pump does not press the oil, the pressure is reduced, and the pressure stabilizing spring is restored to reset the piston, so that the oil pressure between the outlet of the high-pressure plunger fuel pump and the one-way valve is stable. The purpose of setting the pressure valve is that when the fuel pumped out by the high-pressure plunger fuel pump reaches a certain pressure, when the fuel pressure is greater than the pressure of the pressure valve, the fuel flows into the pneumatic fuel nozzle through the pressure valve, and when the fuel pressure is less than the pressure of the pressure valve, the fuel does not flow out.

[0028] In this embodiment, preferably, the casing is configured as a left-right symmetrical two-half structure, and a plurality of bolt holes are provided on the joint surface of the casing to facilitate manufacturing.

[0029] In this embodiment, preferably, guide plates are provided on the inner wall of the casing at positions corresponding to the first centrifugal impeller, the radial impeller and the second centrifugal impeller. The function of providing the guide plates is to rectify the air compressed by the centrifugal impeller compressor so that the compressed air flows along the channels between the guide plates, which is conducive to further compression of the air by the radial impeller.

[0030] In this embodiment, specifically, the hollow shaft can be set to two sections, front and rear, and connected by flanges and bolts. The rear section of the hollow shaft is also connected to the rotating combustion chamber by flanges and bolts. The front section of the hollow shaft and the rotating combustion chamber are connected to the casing by bearings, and the bearings are connected to the casing or to radial support ribs in the casing.

[0031] The working principle of the rotary combustion jet engine of the present embodiment is as follows: at the beginning, the starter drives the rotor part of the rotary combustion jet engine to rotate, and the air is compressed by the first centrifugal impeller and the second centrifugal impeller through the air inlet 15 and enters the casing, and then is further compressed by the centripetal impeller and enters the hollow shaft and flows into the rotary combustion chamber for pressure expansion and temperature increase. At the same time, the fuel is pressurized by the centripetal fuel delivery pump through the oil inlet 20, and is further pressurized by the high-pressure plunger fuel pump and pumped into the peripheral annular cavity of the pneumatic fuel nozzle. The high-pressure air in the central hole of the pneumatic fuel nozzle atomizes and mixes the fuel and high-pressure air in the peripheral annular cavity through the jet action and then sprays them into the rotary combustion chamber. The fuel and air are mixed to form a combustible mixture, which is ignited and burned by the spark plug, and the high-temperature and high-pressure gas formed after combustion is ejected at a high speed through the gas nozzle, thereby driving the rotor part including the air compressor, the rotary fuel pump and the rotary combustion chamber to rotate at a high speed, and the rotary combustion jet engine enters a self-operating state, and then separates from the starter, and the exhaust gas is finally discharged from the exhaust port on the casing.

[0032] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the invention belongs. The use of "first", "second" and similar words in the specification and claims of this application does not indicate any order, quantity or importance, but is only used to distinguish different components. Similarly, the use of "one" or "an" and other similar words does not necessarily indicate a quantitative limitation. "Include" or "comprising" and other similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0033] The exemplary implementation modes of the present invention are described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present invention, various modifications and variations can be made to the above-mentioned specific embodiments, and various combinations of the technical features and structures proposed in the present invention can be made without exceeding the protection scope of the present invention.

Claims

1. A rotary combustion jet engine, It is characterized in that It comprises a stator component and a rotor component, wherein the stator component comprises a casing, and the rotor component comprises an air compressor, a rotary fuel pump and a rotary combustion chamber which are rotatably connected inside the casing and are fixedly connected in sequence; The air compressor comprises a first centrifugal impeller, a radial impeller and a second centrifugal impeller which are sequentially connected to the hollow shaft, the air inlet position of the first centrifugal impeller is the air inlet at the front end of the casing, the air inlet position of the second centrifugal impeller is a plurality of air inlets on the rear end casing, the air outlet position of the radial impeller is the inside of the hollow shaft, and a plurality of air inlets are arranged in the circumference of the hollow shaft; The rotary fuel pump comprises a centripetal fuel delivery pump connected to a hollow shaft, a sealing ring is provided between the shell of the centripetal fuel delivery pump and the casing, the sealing ring is fixed to the casing, a fuel inlet connected to the blade cavity of the centripetal fuel delivery pump is provided on the casing, an oil outlet end of the centripetal fuel delivery pump is connected to the peripheral annular cavity of a pneumatic fuel nozzle arranged in the hollow shaft, a central hole inlet section of the pneumatic fuel nozzle is connected to the interior of the front section of the hollow shaft, and an outlet of the peripheral annular cavity is connected to an outlet section of the central hole; A radial seal is provided between the rotating combustion chamber and the casing, and a spark plug is provided on the side wall thereof. The outer side of the spark plug is connected to a spark plug conductive ring that passes through the rotating combustion chamber. The spark plug conductive ring is in sliding contact with a carbon brush connected to the casing. The side wall of the rotating combustion chamber is evenly distributed with inclined fuel gas nozzles in the circumferential direction, and an exhaust port for exhausting exhaust gas is provided on the side of the casing.

2. A rotary combustion jet engine according to claim 1, It is characterized in that The rotating combustion chamber includes a combustion chamber shell that tapers from the middle to the upper and lower ends, and the inner wall of the combustion chamber shell is circumferentially evenly distributed with heat dissipation ribs that extend continuously from top to bottom. The spark plug is installed on the side wall at the inlet of the combustion chamber shell, and the gas nozzle is arranged in the middle circumference of the combustion chamber shell. The pneumatic fuel nozzle is connected to the hollow shaft through a plurality of radial support plates, and its lower end extends into the upper opening of the combustion chamber shell. The upper end of the heat dissipation rib corresponds to the radial support plate of the outer ring of the pneumatic fuel nozzle.

3. A rotary combustion jet engine according to claim 2, It is characterized in that The combustion chamber shell has an arc-shaped transition from the middle to the upper and lower ends. The channel between adjacent heat dissipation ribs on the upper inner wall and the lower inner wall of the combustion chamber shell is cooling air channel one, and the channel between adjacent heat dissipation ribs on the middle inner wall of the combustion chamber shell is cooling air channel two.

4. A rotary combustion jet engine according to claim 1, It is characterized in that A high-pressure plunger fuel pump is provided in the vane cavity of the centripetal fuel delivery pump, the plunger pump oil inlet on the high-pressure plunger fuel pump is located inside the vane cavity of the centripetal fuel delivery pump, the oil outlet end of the high-pressure plunger fuel pump is connected to the outer peripheral annular cavity of the pneumatic fuel nozzle arranged in the hollow shaft, and a cam is provided on the side of the boost column of the high-pressure plunger fuel pump, and the cam is connected to the cam handle passing through the casing.

5. A rotary combustion jet engine according to claim 4, It is characterized in that The oil outlet of the high-pressure plunger fuel pump is connected with a one-way valve, a pressure stabilizing chamber and a pressure valve in sequence. The pressure stabilizing chamber is provided with oil inlet and outlet holes, and a pressure stabilizing spring and a piston connected to the pressure stabilizing spring are arranged inside the pressure stabilizing chamber.

6. A rotary combustion jet engine according to claim 1, It is characterized in that The casing is arranged as two halves symmetrical on the left and right, and a plurality of bolt holes are arranged on the butt joint surface of the casing.

7. A rotary combustion jet engine according to claim 1, It is characterized in that Guide plates are arranged on the inner wall of the casing at positions corresponding to the first centrifugal impeller, the radial impeller and the second centrifugal impeller.

8. A rotary combustion jet engine according to claim 1, It is characterized in that The hollow shaft is configured to be divided into two sections, front and rear sections, which are connected by flanges and bolts. The rear section of the hollow shaft is also connected to the rotating combustion chamber by flanges and bolts. The front section of the hollow shaft and the rotating combustion chamber are connected to the casing by bearings. The bearings are connected inside the casing or inside radial support ribs inside the casing.

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