Stirling engine combustion chamber structure capable of using various fuels

Abstract

The invention relates to a Stirling engine combustion chamber structure capable of using multiple fuels, which comprises a first combustion chamber and a second combustion chamber, the second combustion chamber is positioned below the first combustion chamber, and the first combustion chamber and the second combustion chamber are communicated and are separated by a push-pull partition plate; the first combustion chamber comprises a barrel, the two ends of the barrel are plugged through an end cover and a sealing cover respectively, the heating end of an engine hot air cylinder penetrates through the end cover and extends into the barrel, an annular mounting plate arranged on the outer wall of the heating end in a sleeving mode is arranged in the barrel, and the annular mounting plate abuts against the end cover and is rotationally connected with the end cover. And a plurality of first heat storage rods are vertically and fixedly connected to the annular mounting plate. The two combustion chambers are arranged, the first combustion chamber and the second combustion chamber can be selectively used, the first combustion chamber and the second combustion chamber use different fuels, and the combustion chamber structure provides a heat source for the Stirling engine and has wide fuel applicability.

Description

Technical Field

[0001] The invention relates to the technical field of Stirling engines, and in particular to a Stirling engine combustion chamber structure capable of using multiple fuels. Background Art

[0002] The Stirling engine outputs power through a cycle of cooling, compression, heat absorption, and expansion of the working medium (hydrogen or helium) in the cylinder, so it is also called a heat engine. The Stirling engine is an external combustion engine, and its effective efficiency is generally between that of a gasoline engine and a diesel engine.

[0003] Patent application No. 2016101992624 discloses a Stirling engine, including an exhaust gas treatment device, a heat exchanger, a refrigeration device, a compressor, a transmission shaft, a turbine, a Stirling hot end heating chamber, a Stirling hot end, a Stirling cold end refrigeration chamber, a Stirling cold end, a gas generator, etc. The heating system of the present invention uses repeated piston double-cylinder combustion to supply gas, and both sides of the piston have combustion work, which has a high power-to-weight ratio and can reduce the weight of the entire Stirling engine system; the combustion gas produced by the combustion passes through the turbine, driving the compressor to pressurize the intake air, which is beneficial to improve the combustion efficiency; at the same time, the turbine drives the refrigeration equipment to cool the air and cool the cold end of the Stirling engine, thereby improving the efficiency of the Stirling engine; the present invention designs a relatively high power-to-weight ratio and clean hot end supply system, while reducing the temperature of the cold end, improving the efficiency of the Stirling engine and reducing emissions, and has a good market prospect.

[0004] The structure disclosed in patent application No. 2016101992624 can only use gas to heat the Stirling hot end heating chamber, and cannot use other fuels such as wood and charcoal for heating. The fuel applicability is poor and is relatively limited in actual use. In addition to the structure disclosed in patent application No. 2016101992624, looking at the technical field, there is currently no Stirling engine combustion chamber structure that can use multiple fuels to heat the heating chamber. In order to make up for the shortcomings of the existing structure, the inventor improves the existing combustion chamber and proposes a Stirling engine combustion chamber structure that can use multiple fuels. Summary of the invention

[0005] The present invention aims at the deficiencies of the prior art and provides a Stirling engine combustion chamber structure capable of using multiple fuels.

[0006] According to a first aspect of the present invention, there is provided a Stirling engine combustion chamber structure that can use a variety of fuels, comprising a first combustion chamber and a second combustion chamber, the second combustion chamber being located below the first combustion chamber, the first combustion chamber and the second combustion chamber being connected and separated by a partition that can be pushed and pulled, a feeding port for adding fuel is provided on the side wall of the second combustion chamber, the feeding port is covered by a cover plate that can be switched and adjusted, and a switchable ash discharge door for ash discharge is provided at the lower part of the second combustion chamber; the first combustion chamber comprises a cylinder body, the two ends of the cylinder body are respectively sealed by end covers and sealing covers, the heating end of the engine hot cylinder passes through the end cover and extends into the cylinder body, an annular mounting plate is provided in the cylinder body and is sleeved on the outer wall of the heating end, the annular mounting plate is abutted against the end cover and is rotatably connected to the end cover, and a plurality of first heat storage rods are vertically fixed on the annular mounting plate.

[0007] Preferably, in order to realize the rotation connection between the annular mounting plate and the end cover, two arc-shaped guide through holes are arranged opposite to each other on the end cover, and two connecting screws are fixed on the annular mounting plate, and the two connecting screws respectively pass through the two arc-shaped guide through holes, and a fixing nut for locking and fixing is connected on each connecting screw. The annular mounting plate is sleeved on the heating end and through the cooperation of the connecting screw and the arc-shaped guide through hole, the annular mounting plate can be driven to rotate by turning the connecting screw. When the annular mounting plate rotates, the first heat storage rod is driven to rotate accordingly. When the second combustion chamber is used for heating, the uniform heating effect of the first heat storage rod can be improved by rotating the annular mounting plate. The annular mounting plate can be manually rotated and adjusted according to the needs of use. After adjusting the position, the fixing nut is locked to ensure that the annular mounting plate is close to the end cover and the annular mounting plate is positioned at the same time. The first heat storage rod plays the role of temporarily storing heat to heat the hot cylinder. It plays the role of ensuring uniform heating of the hot cylinder without causing the hot cylinder to be hot and cold due to the sudden cold of gas, charcoal or wood.

[0008] Preferably, in order to further improve the heat storage effect, a plurality of second heat storage rods are vertically fixed at the end of the heating end, and the first heat storage rod and the second heat storage rod are both aluminum silicon alloy rods, which have a good heat storage effect. Whether it is heating the first combustion chamber or the second combustion chamber, the first heat storage rod and the second heat storage rod are heated first, and then the first heat storage rod and the second heat storage rod transfer the heat to the hot cylinder, and then the engine can work.

[0009] Preferably, a gas inlet is provided on the sealing cover, and an electronic igniter is installed on the gas inlet; a smoke exhaust pipe is provided at the center of the sealing cover, a fuel oil delivery pipe runs through the smoke exhaust pipe and is connected to a fuel oil atomizing burner located inside the sealing cover, and an oil mist igniter is provided on the sealing cover. The first combustion chamber can be heated by two fuels, one is gas and the other is fuel oil. When gas is used, the gas enters from the gas inlet and is ignited by the electronic igniter; when fuel oil is used, the fuel oil is input through the fuel oil delivery pipe, atomized by the fuel oil atomizing burner, and ignited by the oil mist igniter.

[0010] Preferably, the partition is an arc-shaped partition, and an arc-shaped insertion hole for inserting the arc-shaped partition is provided on the side wall of the second combustion chamber. A guard plate located outside the second combustion chamber is fixed to the end of the partition, and the guard plate can cover the arc-shaped insertion hole to reduce heat loss.

[0011] Preferably, in order to facilitate the push-pull adjustment of the partition, a first driving cylinder for driving the push-pull adjustment of the partition is installed on the side wall of the second combustion chamber, the cylinder body of the first driving cylinder is fixed to the side wall of the second combustion chamber, and the piston rod of the first driving cylinder is connected to the guard plate. The partition can be driven to push and pull by providing power through the first driving cylinder. When the partition is pulled out, the first combustion chamber and the second combustion chamber are connected, and the heat generated by the combustion in the second combustion chamber enters the first combustion chamber and heats the first heat storage rod and the second heat storage rod. When the first combustion chamber is used and the second combustion chamber is not used, the partition is pushed in, the first combustion chamber and the second combustion chamber are separated, and the heat generated by the combustion in the first combustion chamber heats the first heat storage rod and the second heat storage rod.

[0012] Preferably, the cover plate is hinged to the side wall of the second combustion chamber. To facilitate the switch adjustment of the cover plate, a second driving cylinder for driving the switch adjustment of the cover plate is installed on the side wall of the second combustion chamber. The cylinder body of the second driving cylinder is hinged to the side wall of the second combustion chamber, and the piston rod of the second driving cylinder is hinged to the cover plate. The power provided by the second driving cylinder can drive the switch adjustment of the cover plate. When fuel needs to be added, the cover plate is opened. The second combustion chamber uses wood or charcoal as fuel.

[0013] Preferably, the ash discharge door includes two door panels, each of which is hinged to the side wall of the second combustion chamber. Two third driving cylinders are installed on the side wall of the second combustion chamber, and the two third driving cylinders are respectively used to drive the opening and closing of the two door panels; the cylinder body of each third driving cylinder is fixed to the side wall of the second combustion chamber, and the piston rod of each third driving cylinder is connected to the corresponding door panel through a pull rod, one end of the pull rod is hinged to the door panel, and the other end is hinged to the piston rod. The opening and closing of the two door panels are realized by the cooperation of the two third driving cylinders, and when the two door panels are opened, the ash in the second combustion chamber is discharged.

[0014] Preferably, a grate is installed in the second combustion chamber, wood or charcoal is placed on the grate, and a charcoal lighter is installed on the side wall of the second combustion chamber.

[0015] A second aspect of the present invention provides a new energy vehicle chassis, comprising the above-mentioned Stirling engine combustion chamber structure.

[0016] The third aspect of the present invention provides a method for heating a hot cylinder using the above-mentioned combustion chamber structure, heating by combustion of fuel supplied by the first combustion chamber, heating by combustion of fuel supplied by the second combustion chamber, or heating by combustion of fuel supplied by the first combustion chamber and combustion of fuel supplied by the second combustion chamber at the same time.

[0017] Preferably, when the fuel supplied by the first combustion chamber is burned for heating, the partition is closed to separate the first combustion chamber from the second combustion chamber, and the gas is ignited by the electronic igniter, and the gas combustion heats the first heat storage rod and the second heat storage rod, thereby achieving hot cylinder heating;

[0018] Preferably, when the fuel supplied by the second combustion chamber is burned for heating, the partition is opened to connect the first combustion chamber with the second combustion chamber, the cover plate is opened to add wood or charcoal into the second combustion chamber, the wood or charcoal is ignited by the charcoal lighter, the wood or charcoal burns to heat the first heat storage rod and the second heat storage rod, thereby achieving heating of the hot cylinder, and during the heating process, the annular mounting plate is rotated to heat the first heat storage rod evenly;

[0019] Preferably, when the fuel supplied by the first combustion chamber burns and the fuel supplied by the second combustion chamber burns to heat simultaneously, the partition is opened to connect the first combustion chamber and the second combustion chamber, and the gas combustion heats the first heat storage rod and the second heat storage rod, while the wood or charcoal combustion heats the first heat storage rod and the second heat storage rod, thereby achieving hot cylinder heating.

[0020] The beneficial effects of the present invention are:

[0021] The present application sets up two combustion chambers, that is, the fuel supplied by the first combustion chamber can be used alone for combustion heating, and the fuel supplied by the second combustion chamber can be used alone for combustion heating. At the same time, the fuel supplied by the first combustion chamber and the fuel supplied by the second combustion chamber can be burned for heating at the same time. The first combustion chamber and the second combustion chamber use different fuels. The combustion chamber structure of the present application provides a heat source for the Stirling engine and has a wide range of fuel applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 Another perspective stereogram of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the present invention from one viewing angle;

[0025] Figure 4 This is a schematic diagram of the internal structure of the present invention from another perspective;

[0026] As shown in the figure:

[0027] 1. Cylinder, 2. End cover, 3. Gas inlet, 4. Oil mist igniter, 5. Sealing cover, 6. Smoke exhaust pipe, 7. Fuel delivery pipe, 8. Partition, 9. Guard plate, 10. Cover plate, 11. Second combustion chamber, 12. Door plate, 13. Pull rod, 14. Third drive cylinder, 15. Second drive cylinder, 16. First drive cylinder, 17. Air inlet, 18. Hot cylinder, 19. Arc guide through hole, 20. Fixing nut, 21. Annular mounting plate, 22. First heat storage rod, 23. Second heat storage rod, 24. Fuel atomizing burner, 25. Grate. DETAILED DESCRIPTION

[0028] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0029] like Figure 1-4 As shown, the present invention includes a first combustion chamber and a second combustion chamber 11, the second combustion chamber 11 is located below the first combustion chamber, the first combustion chamber and the second combustion chamber 11 are connected and separated by a push-pull partition 8, a feeding port for adding fuel is provided on the side wall of the second combustion chamber 11, the feeding port is covered by a cover plate 10 that can be opened and closed, and an ash discharge door for ash discharge that can be opened and closed is provided at the lower part of the second combustion chamber 11. The first combustion chamber includes a cylinder 1, and the two ends of the cylinder 1 are respectively blocked by an end cover 2 and a sealing cover 5, the heating end of the engine hot cylinder 18 passes through the end cover 2 and extends into the cylinder 1, and an annular mounting plate 21 is provided inside the cylinder 1 and is sleeved on the outer wall of the heating end, the annular mounting plate 21 is abutted against the end cover 2 and is rotatably connected to the end cover 2, and a plurality of first heat storage rods 22 are vertically fixed to the annular mounting plate 21.

[0030] In this embodiment, in order to realize the rotational connection between the annular mounting plate 21 and the end cover 2, two arc-shaped guide through holes 19 arranged opposite to each other are provided on the end cover 2, and two connecting screws are fixedly connected to the annular mounting plate 21. The two connecting screws respectively pass through the two arc-shaped guide through holes 19, and a fixing nut 20 for locking and fixing is connected to each connecting screw. The annular mounting plate 21 is sleeved on the heating end, and through the cooperation of the connecting screw and the arc-shaped guide through hole 19, the annular mounting plate 21 can be driven to rotate by turning the connecting screw. When the annular mounting plate 21 rotates, the first heat storage rod 22 is driven to rotate accordingly. When the second combustion chamber 11 is used for heating, the uniform heating effect of the first heat storage rod 22 can be improved by rotating the annular mounting plate 21. Especially in the early stage of heating, the uniform heating effect of the first heat storage rod 22 can be significantly improved by rotating the annular mounting plate 21, and the heating speed can be increased. The annular mounting plate 21 can be manually rotated and adjusted according to the use requirements. After adjusting the position, the fixing nut 20 is locked to ensure that the annular mounting plate 21 is close to the end cover 2 and the annular mounting plate 21 is positioned. The first heat storage rod 22 plays the role of temporarily storing heat to heat the hot cylinder 18. It plays the role of ensuring that the hot cylinder 18 is evenly heated to avoid the hot cylinder from being hot and cold.

[0031] In this embodiment, an air inlet 17 is provided on the cylinder 1 .

[0032] In this embodiment, in order to further improve the heat storage effect, a plurality of second heat storage rods 23 are vertically fixed at the end of the heating end. Furthermore, the first heat storage rod 22 and the second heat storage rod 23 are both aluminum silicon alloy rods, which have a good heat storage effect. Whether the first combustion chamber is heated or the second combustion chamber 11 is heated, the first heat storage rod 22 and the second heat storage rod 23 are heated first, and then the first heat storage rod 22 and the second heat storage rod 23 transfer the heat to the hot cylinder 18, and then the engine can work.

[0033] In this embodiment, a gas inlet 3 is provided on the sealing cover 5, and an electronic igniter is installed on the gas inlet 3. A smoke exhaust pipe 6 is provided at the center of the sealing cover 5, and a fuel oil delivery pipe 7 passes through the smoke exhaust pipe 6 and is connected to a fuel oil atomizing burner 24 located inside the sealing cover 5. The fuel oil atomizing burner 24 is an existing structure, and an oil mist igniter 4 is provided on the sealing cover 5. The first combustion chamber can be heated by two fuels, one is gas and the other is fuel oil. When gas is used, the gas enters from the gas inlet 3 and is ignited by the electronic igniter; when fuel oil is used, the fuel oil is input through the fuel oil delivery pipe 7, atomized by the fuel oil atomizing burner 24, and ignited by the oil mist igniter 4.

[0034] In this embodiment, the partition 8 is an arc-shaped partition 8, and an arc-shaped socket for inserting the arc-shaped partition 8 is provided on the side wall of the second combustion chamber 11. The protective plate 9 located outside the second combustion chamber 11 is fixedly connected to the end of the partition 8, and the protective plate 9 can cover the arc-shaped socket to reduce heat loss. Furthermore, in order to facilitate the push-pull adjustment of the partition 8, a first driving cylinder 16 for driving the push-pull adjustment of the partition 8 is installed on the side wall of the second combustion chamber 11. The cylinder body of the first driving cylinder 16 is fixed to the side wall of the second combustion chamber 11, and the piston rod of the first driving cylinder 16 is connected to the protective plate 9. The partition 8 can be pushed and pulled by providing power through the first driving cylinder 16. When the partition 8 is pulled out, the first combustion chamber and the second combustion chamber 11 are connected, and the heat generated by the combustion in the second combustion chamber 11 enters the first combustion chamber and heats the first heat storage rod 22 and the second heat storage rod 23. When the first combustion chamber is used and the second combustion chamber 11 is not used, the partition 8 is pushed in to separate the first combustion chamber and the second combustion chamber 11 , and the heat generated by the combustion in the first combustion chamber heats the first heat storage rod 22 and the second heat storage rod 23 .

[0035] In this embodiment, the cover plate 10 is hinged to the side wall of the second combustion chamber 11. In order to facilitate the opening and closing of the cover plate 10, a second driving cylinder 15 for driving the opening and closing of the cover plate 10 is installed on the side wall of the second combustion chamber 11. The cylinder body of the second driving cylinder 15 is hinged to the side wall of the second combustion chamber 11, and the piston rod of the second driving cylinder 15 is hinged to the cover plate 10. The second driving cylinder 15 provides power to drive the opening and closing of the cover plate 10. When fuel needs to be added, the cover plate 10 is opened. The second combustion chamber 11 uses wood or charcoal as fuel.

[0036] In this embodiment, the ash discharge door includes two door panels 12, each of which is hinged to the side wall of the second combustion chamber 11. Two third driving cylinders 14 are installed on the side wall of the second combustion chamber 11, and the two third driving cylinders 14 are respectively used to drive the two door panels 12 to open and close. The cylinder body of each third driving cylinder 14 is fixed to the side wall of the second combustion chamber 11, and the piston rod of each third driving cylinder 14 is connected to the corresponding door panel 12 through a pull rod 13, one end of the pull rod 13 is hinged to the door panel 12, and the other end is hinged to the piston rod. The opening and closing of the two door panels 12 are realized by the cooperation of the two third driving cylinders 14. When the two door panels 12 are opened, the ash in the second combustion chamber 11 is discharged.

[0037] In this embodiment, a grate 25 is installed in the second combustion chamber 11, wood or charcoal is placed on the grate 25, and a charcoal lighter (not shown in the figure) is installed on the side wall of the second combustion chamber 11, and the charcoal lighter is an existing structure.

[0038] The present application sets up two combustion chambers, that is, the fuel supplied by the first combustion chamber can be used alone for combustion heating, and the fuel supplied by the second combustion chamber 11 can be used alone for combustion heating. At the same time, the fuel supplied by the first combustion chamber and the fuel supplied by the second combustion chamber 11 can be burned for heating at the same time. The first combustion chamber and the second combustion chamber 11 use different fuels. The combustion chamber structure of the present application provides a heat source for the Stirling engine and has a wide range of fuel applicability.

[0039] The method of heating the hot cylinder by using the above combustion chamber structure is heating by burning the fuel supplied by the first combustion chamber or by burning the fuel supplied by the second combustion chamber 11 or by burning the fuel supplied by the first combustion chamber and the fuel supplied by the second combustion chamber 11 at the same time.

[0040] Preferably, when the fuel supplied by the first combustion chamber is burned for heating, the partition 8 is closed to separate the first combustion chamber from the second combustion chamber, and the gas is ignited by the electronic igniter, and the gas combustion heats the first heat storage rod 22 and the second heat storage rod 23, thereby realizing the heating of the hot cylinder;

[0041] Preferably, when the fuel supplied by the second combustion chamber is burned for heating, the partition 8 is opened to connect the first combustion chamber with the second combustion chamber 11, the cover plate 10 is opened to add wood or charcoal into the second combustion chamber 11, and the wood or charcoal is ignited by a charcoal lighter. The combustion of the wood or charcoal heats the first heat storage rod 22 and the second heat storage rod 23, thereby realizing the heating of the hot cylinder. During the heating process, the annular mounting plate 21 is rotated to heat the first heat storage rod 22 evenly.

[0042] Preferably, when the fuel supplied by the first combustion chamber burns and the fuel supplied by the second combustion chamber 11 burns to heat simultaneously, the partition 8 is opened to connect the first combustion chamber and the second combustion chamber, and the gas combustion heats the first heat storage rod and the second heat storage rod, while the wood or charcoal combustion heats the first heat storage rod and the second heat storage rod, thereby realizing hot cylinder heating.

[0043] The specific calculation steps for the fuel consumption of the above Stirling engine combustion chamber structure are:

[0044] (1) Calculate the engine's shaft power Wsh based on the engine's torque M and speed n. The calculation formula is:

[0045]

[0046] (2) Based on the type, structure and lubrication conditions of the engine, the mechanical efficiency of the engine used in the calculation is taken as η = 80%;

[0047] (3) Calculate the engine output power W net The calculation formula is:

[0048]

[0049] (4) Calculate the indicated power Wcy of the engine. The calculation formula is:

[0050]

[0051] (5) Based on the indicated work obtained, calculate the indicated power of the engine. Then, based on the working cycle efficiency ηi and the external efficiency ηf, obtain the required heat Wr per unit time. The calculation formula is:

[0052]

[0053] Among them, ηf=ηHηV, ηH is generally 80%-85%. ηV is generally 90%-100%. ηi is generally about 80%;

[0054] (6) When using gas or oil as fuel for heating, the combustion calorific value of the gas or liquid is known, Q kJ / mol, and the heat required for the normal operation of the engine is determined according to step 5, and the injection speed and flow rate of the gas or oil are determined;

[0055] (7) When charcoal or wood is used as fuel for heating, the calorific value of combustion of charcoal or wood is known, Qg kJ / mol. Based on the heat required for normal operation of the engine determined in step 5, determine the cavity of the charcoal or wood combustion chamber and the amount of charcoal or wood required.

[0056] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by using existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention, and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A Stirling engine combustion chamber structure capable of using multiple fuels, Features: The invention comprises a first combustion chamber and a second combustion chamber, wherein the second combustion chamber is located below the first combustion chamber, the first combustion chamber and the second combustion chamber are connected and separated by a partition which can be pushed and pulled, a feeding port for adding fuel is provided on the side wall of the second combustion chamber, the feeding port is covered by a cover which can be switched and adjusted, and a switchable ash discharge door for discharging ash is provided at the lower part of the second combustion chamber; the first combustion chamber comprises a cylinder body, the two ends of the cylinder body are respectively sealed by end covers and sealing covers, the heating end of the engine hot cylinder passes through the end cover and extends into the cylinder body, an annular mounting plate which is sleeved on the outer wall of the heating end is provided in the cylinder body, the annular mounting plate is abutted against the end cover and is rotatably connected to the end cover, and a plurality of first heat storage rods are vertically fixed on the annular mounting plate.

2. A Stirling engine combustion chamber structure capable of using multiple fuels according to claim 1, Features: Two arc-shaped guide through holes are arranged opposite to each other on the end cover, and two connecting screws are fixedly connected to the annular mounting plate. The two connecting screws pass through the two arc-shaped guide through holes respectively, and a fixing nut for locking and fixing is connected to each connecting screw.

3. A Stirling engine combustion chamber structure capable of using multiple fuels according to claim 2, Features: A plurality of second heat storage rods are vertically fixed to the end of the heating end, and the first heat storage rod and the second heat storage rod are both aluminum-silicon alloy rods.

4. A Stirling engine combustion chamber structure capable of using multiple fuels according to claim 1, Features: A gas inlet is arranged on the sealing cover, and an electronic igniter is installed on the gas inlet; a smoke exhaust pipe is arranged at the center of the sealing cover, a fuel oil delivery pipe passes through the smoke exhaust pipe and is connected to a fuel oil atomizing burner located inside the sealing cover, and an oil mist igniter is arranged on the sealing cover.

5. A Stirling engine combustion chamber structure capable of using multiple fuels according to claim 1, Features: The partition is an arc-shaped partition, and an arc-shaped insertion hole for inserting the arc-shaped partition is provided on the side wall of the second combustion chamber, and a guard plate located outside the second combustion chamber is fixedly connected to the end of the partition; A grate is installed in the second combustion chamber, and a charcoal lighter is installed on the side wall of the second combustion chamber.

6. A Stirling engine combustion chamber structure capable of using multiple fuels according to claim 5, Features: A first driving cylinder for driving the partition to push and pull adjustment is installed on the side wall of the second combustion chamber, the cylinder body of the first driving cylinder is fixed to the side wall of the second combustion chamber, and the piston rod of the first driving cylinder is connected to the guard plate.

7. A Stirling engine combustion chamber structure capable of using multiple fuels according to claim 6, Features: The cover plate is hinged to the side wall of the second combustion chamber. A second driving cylinder for driving the cover plate to switch is installed on the side wall of the second combustion chamber. The cylinder body of the second driving cylinder is hinged to the side wall of the second combustion chamber. The piston rod of the second driving cylinder is hinged to the cover plate.

8. A Stirling engine combustion chamber structure capable of using multiple fuels according to claim 7, Features: The ash discharge door includes two door panels, each of which is hinged to the side wall of the second combustion chamber. Two third driving cylinders are installed on the side wall of the second combustion chamber, and the two third driving cylinders are respectively used to drive the two door panel switches; the cylinder body of each third driving cylinder is fixed to the side wall of the second combustion chamber, and the piston rod of each third driving cylinder is connected to the corresponding door panel through a pull rod, one end of the pull rod is hinged to the door panel, and the other end is hinged to the piston rod.

9. A new energy vehicle chassis, Features: The invention comprises a Stirling engine combustion chamber structure as described in any one of claims 1 to 8.

10. A method for heating a hot cylinder using the combustion chamber structure according to any one of claims 1 to 8, Features: The heating is performed by burning the fuel supplied to the first combustion chamber, or by burning the fuel supplied to the second combustion chamber, or by burning the fuel supplied to the first combustion chamber and the fuel supplied to the second combustion chamber at the same time.

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