An engine device

Abstract

The present invention discloses an engine device, which relates to the field of engine technology. It includes a compressor, a burner, and an expander connected in sequence, and gas or liquid is compressed in the compressor. High-temperature and high-pressure gas or high-temperature and high-pressure liquid vapor enters the expander and is converted by the expander into low-temperature and low-pressure gas or low-temperature and low-pressure condensate. The low-temperature and low-pressure condensate is continuously input into the compressor and compressed again by the compressor before entering the burner and expander. The three form a closed loop, reducing heat loss and improving the thermal efficiency of the entire process of converting thermal energy into mechanical energy. In addition, the combustion of the burner is continuous, and the expander will not generate sudden impact noise and vibration when it reciprocates, affecting the normal work of on-site workers.

Description

Technical Field

[0001] The present invention relates to the technical field of engines, and in particular to an engine device. Background Art

[0002] An engine is a device that converts other forms of energy into mechanical energy. Among them, thermal engines are the most common due to their low input and low loss.

[0003] Thermal engines are categorized as positive displacement internal combustion engines and impulse engines. Positive displacement internal combustion engines operate by introducing fuel into the compressor cylinder, where the fuel-compressed gas ignites, creating a burst of high-temperature, high-pressure gas that expands and produces work. This is a reciprocating motion. They are categorized as either four-stroke or two-stroke engines, with four and two reciprocating cycles producing one work cycle. Because this heat energy is generated instantaneously over a large area, the impact is high, generating sudden noise and vibration with each stroke, significantly disrupting the work of on-site workers. In impulse engines, fuel mixes with air in the combustion chamber and burns to form high-temperature, high-pressure gas, which then impacts the rotating impeller through a nozzle to produce work. Both types of thermal engines exhaust the high-temperature, high-pressure gas after each stroke, operating in an open-loop, one-way process. This results in significant thermal losses with each stroke and low thermal efficiency in the entire process of converting thermal energy into mechanical energy. Summary of the Invention

[0004] The purpose of the present invention is to provide an engine device with an additional expander to address the above-mentioned problems, so that the remaining part of the thermal energy after doing work can be reused to form a closed-loop one-way cycle engine device.

[0005] The technical solution adopted in the present invention is as follows:

[0006] An engine device includes a compressor, a burner, and an expander connected in sequence. Gas or liquid is compressed in the compressor, and the compressor compresses to form high-pressure gas or high-pressure liquid. The high-pressure gas enters the burner and burns to form high-temperature and high-pressure gas. The high-pressure liquid enters the burner and absorbs heat and vaporizes to form high-temperature and high-pressure liquid vapor. The high-temperature and high-pressure gas or high-temperature and high-pressure liquid vapor enters the expander, driving the expander to rotate. The expander converts the high-temperature and high-pressure gas or high-temperature and high-pressure liquid vapor into low-temperature and low-pressure gas or low-temperature and low-pressure condensate, which enters the compressor again.

[0007] Preferably, the compressor includes a compression cylinder and a compression rotor eccentrically arranged in the compression cylinder. A compression chute is provided on the compression rotor, and a compression slider is slidably connected in the compression chute. The rotation of the compression rotor drives the compression slider to always be close to the inner wall of the compression cylinder; the inner wall of the compression cylinder, the compression rotor and the compression chute form a compression eccentric cavity, and the compression chute of the compression cylinder and the compression slider form a compression chute cavity.

[0008] Preferably, the burner includes an outer shell and a combustion partition extending circumferentially from the edge of the outer shell to the interior of the outer shell; the space enclosed by the combustion partition is a combustion chamber, which is connected to the compression eccentric cavity; the remaining space inside the outer shell is a mixing chamber, which is connected to the combustion chamber.

[0009] Preferably, the combustion chamber is also connected to a fuel tank containing fuel, and a flame nozzle and an igniter are also provided in the combustion chamber, so that the fuel enters the combustion chamber and burns.

[0010] Preferably, a heat exchanger is further attached to the inner wall of the shell, and the heat exchanger is communicated with the compression chute cavity; and the mixing chamber is communicated with the heat exchanger.

[0011] Preferably, the compression eccentric chamber and the compression chute chamber are sealed and not connected to each other, gas is compressed in the compression eccentric chamber, and liquid is compressed in the compression chute chamber; combustion in the combustion chamber increases the temperature of the mixing chamber, and the high-pressure liquid formed by compression in the eccentric chamber enters the heat exchanger to absorb heat to form high-temperature and high-pressure liquid, and the high-temperature and high-pressure liquid then enters the mixing chamber to absorb heat to form liquid-vapor, and mixes with the gas entering the mixing chamber from the combustion chamber to form a high-temperature and high-pressure mixed gas.

[0012] Preferably, the expander includes an expansion cylinder and an expansion rotor eccentrically arranged in the expansion cylinder. An expansion chute is provided on the expansion rotor, and an expansion slider is slidably connected in the expansion chute. The rotation of the expansion rotor drives the expansion slider to always be close to the inner wall of the expansion cylinder; the inner wall of the expansion cylinder, the expansion rotor, and the expansion chute form an expansion eccentric cavity, and the expansion chute of the expansion cylinder and the expansion slider form an expansion chute cavity.

[0013] Preferably, the expansion cylinder has a nozzle extending outward, and the nozzle is located at one end inside the expansion cylinder with an inclined mouth. The mixing chamber is connected with the expansion eccentric cavity through the nozzle. The high-temperature and high-pressure mixed gas in the mixing chamber enters the expansion eccentric cavity to drive the expansion slider to rotate, and the expansion slider drives the expansion rotor to rotate; the expansion rotor is connected to the compression rotor in a transmission manner, and the expansion rotor drives the compression rotor to rotate to compress the gas and liquid; the compressor, burner, and expander form a power cycle.

[0014] Preferably, the expansion cylinder is also connected to a cooling box, a cooling pipe is provided in the cooling box, the inlet of the cooling pipe is connected to the liquid tank, and the outlet is connected to the compression chute cavity, and the liquid tank is also connected to the cooling box; the high-temperature and high-pressure mixed gas is expanded by the expander to form a high-temperature and low-pressure mixed gas, which enters the cooling box and is cooled by the cooling pipe to form a low-temperature and low-pressure mixed gas, and the liquid and vapor therein condense to form a condensed liquid which flows into the liquid tank.

[0015] Preferably, an elastic member is connected between the compression cylinder and the compression slider or between the expansion cylinder and the expansion slider.

[0016] In summary, due to the adoption of the above-mentioned technical solution, the beneficial effect of the present invention is that high-temperature, high-pressure gas or high-temperature, high-pressure liquid vapor enters the expander and is converted by the expander into low-temperature, low-pressure gas or low-temperature, low-pressure condensate. The low-temperature, low-pressure condensate is then fed into the compressor, compressed again by the compressor, and then enters the burner and expander, forming a closed loop. This reduces heat loss and improves the thermal efficiency of the entire process of converting thermal energy into mechanical energy. Furthermore, the burner's combustion is continuous, and the expander does not reciprocate to produce sudden impact noise and vibration, which would affect the normal work of on-site workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A cross-sectional view of an engine device.

[0018] Figure 2 A cross-sectional view of the compressor.

[0019] Figure 3 for Figure 2 Add schematic diagrams of gas and water, in which the greater the density of cross-section lines, the greater the pressure of the gas or water.

[0020] Figure 4 This is the front view of the compression rotor.

[0021] Figure 5 This is a plan view of the side of the compression rear end cover facing the compression cylinder.

[0022] Figure 6 Schematic diagram of the structure of the compression slider.

[0023] Figure 7 A cross-sectional view of the burner.

[0024] Figure 8 A cross-sectional view of the expander.

[0025] Figure 9 for Figure 8 Add schematic diagrams of gas and water, in which the greater the density of cross-section lines, the greater the pressure of the gas or water.

[0026] Figure 10 This is the front view of the expansion rotor.

[0027] Figure 11 This is the front view of the cooling pipe.

[0028] Markings in the figure: compressor-1, compression cylinder-11, compression eccentric chamber-111, compression chute chamber-112, compression heat sink-113, compression rotor-12, compression chute-121, compression lubrication long groove-122, compression front cover-13, air outlet-131, water outlet-132, water inlet-133, compression lubrication ring groove-134, compression rear cover-14, compression slider-15, slider lubrication groove-151, compression spring-16, burner-2, housing-21, mixing chamber-211, heat exchanger -22, combustion partition-23, combustion chamber-231, ignition partition-24, ignition chamber-241, fuel tank-25, fuel pump-26, flame nozzle-27, igniter-28, expander-3, expansion cylinder-31, expansion eccentric chamber-311, expansion chute chamber-312, expansion rotor-32, expansion chute-321, expansion lubricating slot-322, expansion slider-33, cooling box-34, cooling pipe-341, cooling fin-342, water tank-35, expansion spring-36, nozzle-37. DETAILED DESCRIPTION

[0029] The present invention will be described in detail below with reference to the accompanying drawings.

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] Please see Figure 1 , an engine device, including a compressor 1, a burner 2, and an expander 3 connected in sequence.

[0032] Please see Figures 2 to 5The compressor 1 includes a compression cylinder 11, a compression rotor 12 eccentrically arranged in the compression cylinder 11, a compression front cover 13 and a compression rear cover 14 respectively covering both sides of the compression cylinder 11 and being sealed therewith; the compression rotor 12 is radially provided with 3 to 10 compression chutes 121, which are evenly arranged along the circumference of the compression rotor 12, and a compression slider 15 is slidably connected in each compression chute 121, and a solid lubricant is provided at the connection between the two; the rotation of the compression rotor 12 generates centrifugal force to drive the compression slider 15 to always be in close contact with the inner wall of the compression cylinder 11; the sum of the lengths of the compression slider 15 and the compression chute 121 is greater than the maximum distance between the compression rotor 12 and the compression cylinder 11, so as to prevent the compression rotor 12 from throwing the compression slider 15 away from the compression chute 121 during rotation; the inner wall of the compression cylinder 11, the compression rotor 12, and the compression chute 121 form a compression eccentric chamber 111, and the compression chute 121 of the compression cylinder 11 and the compression slider 15 form a compression chute chamber 112. The compression eccentric chamber 111 and the compression chute chamber 112 are sealed and non-communicative. Gas is compressed in the compression eccentric chamber 111, and water is compressed in the compression chute chamber 112. As the compression rotor 12 rotates clockwise, the gas in the compression eccentric chamber 111 is driven by the compression slider 15 to move from the left half of the compression cylinder 11 to the right half of the compression cylinder 11. The pressure of the gas in the compression eccentric chamber 111 in the right half of the compression cylinder 11 gradually increases in the clockwise direction. The water in the compression chute chamber 112 is driven by the compression slider 15 to move from the left half of the compression cylinder 11 to the right half of the compression cylinder 11. The pressure of the water in the compression chute chamber 112 in the right half of the compression cylinder 11 gradually increases in the clockwise direction. The compression front end cover 13 is provided with an air outlet 131, a water outlet 132, an air inlet, and a water inlet 133. The air outlet 131 is connected to the compression eccentric chamber 111 where the gas pressure is the highest, the water outlet 132 is connected to the compression chute chamber 112 where the water pressure is the highest, the air inlet is connected to the compression eccentric chamber 111 located in the left half of the compression cylinder 11, and the water inlet 133 is connected to the compression chute chamber 112 located in the left half of the compression cylinder 11.

[0033] Please see Figure 7The burner 2 includes a shell 21, a heat exchanger 22 attached to the inner wall of the shell 21, a combustion partition 23 extending circumferentially from the edge of the shell 21 to the inside of the shell 21, and an ignition partition 24 extending circumferentially from the center of the end of the shell 21 to the inside of the shell 21; the heat exchanger 22 is connected to the water outlet 132, and the high-pressure water output from the water outlet 132 directly enters the heat exchanger 22 to absorb heat; the space surrounded by the combustion partition 23 is a combustion chamber 231, and the combustion chamber 231 is connected to the air outlet 131, and the high-pressure gas output from the air outlet 131 directly enters the combustion chamber 231, and the combustion chamber 231 is also connected to a fuel tank 25 containing fuel, and a fuel pump 26 is provided at the connection between the two. When the fuel pump 26 is turned on, the fuel in the fuel tank 25 is input into the combustion chamber 231, and the high-pressure gas in the combustion chamber 231 is mixed with the fuel. The materials are mixed and burned, and a flame nozzle 3727 and an igniter 28 are also provided in the combustion chamber 231. The heads of the two are aligned with each other and cooperate to ignite the high-pressure air and fuel in the combustion chamber 231; the space surrounded by the ignition partition 24 is the ignition chamber 241, and the ignition chamber 241 is located in the combustion chamber 231 and the two are connected, so that the flame is first generated stably and then enters the combustion chamber 231 to prevent the high-pressure gas and fuel from directly contacting the flame nozzle 3727 and the igniter 28 and exploding; the remaining space inside the shell 21 is the mixing chamber 211, and the mixing chamber 211 is connected to the heat exchanger 22 and the combustion chamber 231. The gas and heat generated in the combustion chamber 231 slowly enter the mixing chamber 211 to prevent the fuel still burning in the combustion chamber 231 from contacting and reacting with the water vapor in the mixing chamber 211 over a large area.

[0034] Please see Figures 8 to 11The expander 3 includes an expansion cylinder 31, an expansion rotor 32 eccentrically disposed within the expansion cylinder 31, and an expansion front cover and an expansion rear cover respectively covering both sides of the expansion cylinder 31 and being sealed therewith. The expansion rotor 32 is radially provided with 3 to 10 expansion chutes 321, which are evenly arranged circumferentially along the expansion rotor 32. An expansion slider 33 is slidably connected within each expansion chute 321, and a solid lubricant is provided at the connection between the two. The rotation of the expansion rotor 32 generates centrifugal force, which drives the expansion slider 33 to always adhere to the inner wall of the expansion cylinder 31. The sum of the lengths of the expansion slider 33 and the expansion chute 321 is greater than the maximum distance between the expansion rotor 32 and the expansion cylinder 31, thereby preventing the expansion slider 33 from being thrown off the expansion chute 321 during rotation of the expansion rotor 32. The inner wall of the expansion cylinder 31, the expansion rotor 32, and the expansion chute 321 define an expansion eccentric chamber 311, and the expansion chute 321 of the expansion cylinder 31 and the expansion slider 33 define an expansion chute chamber 312. The expansion eccentric chamber 311 and the expansion chute chamber 312 are sealed and not connected to each other. The expansion eccentric chamber 311 contains gas input from the mixing chamber 211, and the expansion chute chamber 312 contains hydraulic oil. The expansion cylinder 31 has a nozzle 37 extending outward. One end of the nozzle 37 is located inside the expansion cylinder 31 and has an inclined opening. The outlet of the nozzle 37 is aligned with the side of the expansion slider 33. The mixing chamber 211 is connected to the expansion eccentric chamber 311 through the nozzle 37. The high-temperature and high-pressure mixed gas in the mixing chamber 211 enters the expansion eccentric chamber 311 along the nozzle 37, driving the expansion slider 33 to rotate, which in turn drives the expansion rotor 32 to rotate. The expansion rotor 32 is connected to the compression rotor 12 via a rack and pinion transmission. The expansion rotor 32 drives the compression rotor 12 to rotate and compress gas and water. The compression rotor 12 does not require additional power to drive, thereby increasing thermal efficiency. The expansion cylinder 31 is also connected to the cooling box 34. A cooling pipe 341 is fixed in the cooling box 34. The inlet of the cooling pipe 341 is connected to the water tank 35, and the outlet is connected to the water inlet of the compression front cover 13. A water pump is provided at the connection point between the water tank 35 and the inlet of the cooling pipe 341. The water tank 35 is also connected to the bottom of the cooling box 34 to collect condensed water formed inside the cooling box 34. The cooling box 34 is provided with an exhaust hole for discharging the gas therein. The compressor 1, the burner 2, and the expander 3 form a power cycle. The expansion rotor 32 rotates counterclockwise, and the gas in the expansion eccentric chamber 311 is driven by the expansion slider 33 to move from the left half of the expansion cylinder 31 to the right half of the expansion cylinder 31. The pressure of the gas in the expansion eccentric chamber 311 in the right half of the expansion cylinder 31 gradually decreases counterclockwise. The water in the expansion chute chamber 312 is driven by the expansion slider 33 to move from the left half of the expansion cylinder 31 to the right half of the expansion cylinder 31. The pressure of the water in the expansion chute chamber 312 in the right half of the expansion cylinder 31 gradually decreases counterclockwise.

[0035] Please see Figure 4 、 Figure 5 Furthermore, a compression lubrication long groove 122 is provided on both sides of the compression rotor 12 facing the compression front end cover 13 and the compression rear end cover 14, which is close to the compression slide groove 121 and contains solid lubricant. A compression lubrication ring groove 134 is circumferentially provided on one side of the compression front end cover 13 and the compression rear end cover 14 facing the compression rotor 12, which contains solid lubricant. The compression lubrication long groove 122 and the compression lubrication ring groove 134 are opposite to each other, and the solid lubricants inside the two are always in contact, thereby improving the smoothness of the rotation of the compression rotor 12 relative to the compression front end cover 13 and the compression rear end cover 14, and ensuring the sealing between the compression rotor 12 and the compression front end cover 13 and the compression rear end cover 14.

[0036] Please see Figure 10 Furthermore, expansion rotor 32 is provided with expansion lubrication long grooves 322 on both sides facing expansion front end cover and expansion rear end cover, which are close to expansion slide groove 321 and filled with solid lubricant, elastic rubber and sealing strip. Expansion front end cover and expansion rear end cover are provided with expansion lubrication ring grooves in the circumferential direction on one side facing expansion rotor 32, which are filled with solid lubricant. Expansion lubrication long groove 322 and expansion lubrication ring groove are facing each other, and the solid lubricants inside the two are always in contact, thereby improving the smoothness of rotation of expansion rotor 32 relative to expansion front end cover and expansion rear end cover, and ensuring the sealing between expansion rotor 32 and expansion front end cover and expansion rear end cover.

[0037] Please see Figure 6 Furthermore, slider lubrication grooves 151 are opened on both sides of the compression slider 15 facing the compression cylinder 11, and on both sides of the expansion slider 33 facing the expansion cylinder 31. Solid lubricant, elastic rubber, and sealing strips are provided in the sliders to improve the smoothness of the compression slider 15 relative to the compression cylinder 11 and the expansion slider 33 relative to the expansion cylinder 31, and ensure the sealing between the compression slider 15 and the compression cylinder 11, and the expansion slider 33 and the expansion cylinder 31.

[0038] Please see Figure 2 、 Figure 8 Furthermore, a compression spring 16 is connected between the compression cylinder 11 and the compression slider 15, and an expansion spring 36 is connected between the expansion cylinder 31 and the expansion slider 33. This ensures that the compression slider 15 or the expansion slider 33 always clings to the inner wall of the compression cylinder 11 or the expansion cylinder 31 during the rotation of the compression rotor 12 or the expansion rotor 32, thereby preventing the compression rotor 12 or the expansion rotor 32 from failing to rotate at the required speed, which would result in the compression slider 15 or the expansion slider 33 not being able to fully adhere to the inner wall of the compression cylinder 11 or the expansion cylinder 31 due to the centrifugal force.

[0039] Please see Figure 2 Furthermore, compression cooling fins 113 are evenly distributed on the outer wall of the compression cylinder 11.

[0040] Please see Figure 8 Furthermore, cooling fins 342 are attached to the inner wall of the cooling box 34 .

[0041] The working principle of this device is as follows: the compression rotor 12 rotates clockwise, driving the compression slider 15 to cling to the inner wall of the compression cylinder 11;

[0042] The gas in the compression eccentric chamber 111 is compressed to form high-pressure gas and enters the combustion chamber 231 through the gas outlet 131 of the compression front cover 13. The fuel in the fuel tank is input into the combustion chamber 231 by the fuel pump 26. The high-pressure gas is mixed with the fuel and ignited by the flame nozzle 3727 and the burner 2. The generated combustion gas and heat enter the mixing chamber 211.

[0043] The water in the compression chute cavity 112 is compressed to form high-pressure water, which enters the heat exchanger 22 to absorb heat and form high-temperature and high-pressure water. The high-temperature and high-pressure water then enters the mixing chamber 211 to absorb heat and form high-temperature and high-pressure steam.

[0044] The combustion gas and water vapor mix to form a high-temperature and high-pressure mixed gas, which enters the expansion eccentric chamber 311 through the nozzle 37 to drive the expansion slider 33 to rotate, drive the expansion rotor 32 to rotate, and drive the compression rotor 12 to rotate to continue compression;

[0045] The high-temperature, high-pressure mixed gas in the expansion eccentric chamber 311 expands to form a high-temperature, low-pressure mixed gas, which enters the cooling box 34 and is cooled by the cooling pipe 341 to form a low-temperature, low-pressure mixed gas. The water vapor in the mixed gas turns into condensed water and adheres to the outer wall of the cooling pipe 341. It accumulates and drips to the bottom of the cooling box 34 and flows into the water tank 35. The remaining low-temperature, low-pressure mixed gas is discharged into the atmosphere through the exhaust hole.

[0046] The cooling water in the cooling pipe 341 absorbs the heat of the high-temperature, low-pressure mixed gas to form hot water, which then enters the compression chute cavity 112 through the outlet of the cooling pipe 341 and the water inlet of the compression front cover 13 to continue compression.

[0047] The compressor 1, the burner 2 and the expander 3 form a closed power loop, which reduces the heat energy loss in the whole process and ensures that the thermal efficiency is fully utilized to the greatest extent.

[0048] The principles and implementation methods of the present invention are described herein using specific embodiments. The description of the above embodiments is intended only to facilitate understanding of the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0049] In the description of the present invention, it should be noted that the terms "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

Claims

1. An engine device, characterized in that: The system comprises a compressor, a burner and an expander connected in sequence. Gas or liquid is compressed in the compressor, which forms high-pressure gas or high-pressure liquid. The high-pressure gas enters the burner and burns to form high-temperature and high-pressure gas. The high-pressure liquid enters the burner and absorbs heat to vaporize to form high-temperature and high-pressure liquid vapor. The high-temperature and high-pressure gas or high-temperature and high-pressure liquid vapor enters the expander, driving the expander to rotate. The expander converts the high-temperature and high-pressure gas or high-temperature and high-pressure liquid vapor into low-temperature and low-pressure gas or low-temperature and low-pressure condensate, which then enters the compressor again. The compressor includes a compression cylinder and a compression rotor eccentrically arranged in the compression cylinder. The compression rotor is provided with a compression chute. A compression slider is slidably connected in the compression chute. The rotation of the compression rotor drives the compression slider to always be in close contact with the inner wall of the compression cylinder. The inner wall of the compression cylinder, the compression rotor, and the compression chute form a compression eccentric cavity. The compression chute of the compression cylinder and the compression slider form a compression chute cavity. The expander includes an expansion cylinder; the expansion cylinder is also connected to a cooling box, a cooling pipe is provided in the cooling box, the inlet of the cooling pipe is connected to the liquid tank, and the outlet is connected to the compression chute cavity, and the liquid tank is also connected to the cooling box; the high-temperature and high-pressure liquid vapor in the burner is mixed with the high-temperature and high-pressure gas entering the mixing chamber from the combustion chamber of the burner to form a high-temperature and high-pressure mixed gas; the high-temperature and high-pressure mixed gas is expanded by the expander to form a high-temperature and low-pressure mixed gas, which enters the cooling box and is cooled by the cooling pipe to form a low-temperature and low-pressure mixed gas, and the liquid vapor therein condenses to form a condensed liquid which flows into the liquid tank.

2. An engine device according to claim 1, characterized in that: The burner includes an outer shell and a combustion partition extending circumferentially from the edge of the outer shell to the interior of the outer shell; the space enclosed by the combustion partition is a combustion chamber, which is connected to the compression eccentric cavity; the remaining space inside the outer shell is a mixing chamber, which is connected to the combustion chamber.

3. An engine device according to claim 2, characterized in that: The combustion chamber is also connected to a fuel tank containing fuel. A flame nozzle and an igniter are also provided in the combustion chamber, and the fuel enters the combustion chamber and burns.

4. An engine device according to claim 2 or 3, characterized in that: A heat exchanger is also attached to the inner wall of the shell, and the heat exchanger is communicated with the compression chute cavity; the mixing chamber is communicated with the heat exchanger.

5. An engine device according to claim 4, characterized in that: The compression eccentric chamber and the compression chute chamber are sealed and not connected to each other. Gas is compressed in the compression eccentric chamber, and liquid is compressed in the compression chute chamber. Combustion in the combustion chamber increases the temperature of the mixing chamber. The high-pressure liquid compressed in the eccentric chamber enters the heat exchanger to absorb heat to form high-temperature and high-pressure liquid. The high-temperature and high-pressure liquid then enters the mixing chamber to absorb heat to form liquid-vapor, and mixes with the gas entering the mixing chamber from the combustion chamber to form a high-temperature and high-pressure mixed gas.

6. An engine device according to claim 5, characterized in that: The expander includes an expansion rotor eccentrically arranged in an expansion cylinder, an expansion chute is provided on the expansion rotor, an expansion slider is slidably connected in the expansion chute, and the rotation of the expansion rotor drives the expansion slider to always be close to the inner wall of the expansion cylinder; the inner wall of the expansion cylinder, the expansion rotor, and the expansion chute form an expansion eccentric cavity, and the expansion chute of the expansion cylinder and the expansion slider form an expansion chute cavity.

7. An engine device according to claim 6, characterized in that: The expansion cylinder is provided with a nozzle extending outward, and one end of the nozzle located inside the expansion cylinder is an inclined port. The mixing chamber is connected to the expansion eccentric cavity through the nozzle. The high-temperature and high-pressure mixed gas in the mixing chamber enters the expansion eccentric cavity to drive the expansion slider to rotate, and the expansion slider drives the expansion rotor to rotate; the expansion rotor is connected to the compression rotor in a transmission manner, and the expansion rotor drives the compression rotor to rotate to compress the gas and liquid; the compressor, burner, and expander form a power cycle.

8. An engine device according to any one of claims 6 to 7, characterized in that: An elastic member is connected between the compression cylinder and the compression slider or between the expansion cylinder and the expansion slider.

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