Stirling prime mover and stirling generator

Abstract

The present application relates to the technical field of engine, and provides a Stirling prime mover and a Stirling generator. The Stirling prime mover comprises: a Stirling engine comprising a hot-end heater; a shell structure capable of containing a first working medium, the shell structure being sleeved on the Stirling engine and being oppositely arranged with the hot-end heater, so that at least part of the hot-end heater is inside the shell structure; and a heat pipe comprising a condensing section and an evaporation section for being connected with a heat source, the condensing section extending into the shell structure. Compared with the form that the heat pipe directly extends into the hot-end heater, the coupling area of the shell structure sleeved on the Stirling engine and opposite to the hot-end heater is larger, so that the heat transfer efficiency and the heat transfer capacity between the shell structure and the hot-end heater are higher. The length of the condensing section of the heat pipe extending into the shell structure is not limited, so that the condensing section can completely extend into the shell structure, and the heat of the condensing section of the heat pipe can be fully utilized.

Description

Technical Field

[0001] This invention relates to the field of engine technology, and in particular to a free-piston Stirling prime mover and a free-piston Stirling generator. Background Technology

[0002] The Stirling engine is an external combustion engine that generates power through the thermal expansion and contraction of the working gas inside the engine, converting thermal energy into mechanical energy. The Stirling engine includes a hot-end heater. This heater is located in the expansion chamber and is used to heat the working gas. Existing technology typically utilizes heat pipe heating for heat exchange; the evaporation section of the heat pipe is connected to a heat source, and the condensation section extends into the hot-end heater to release heat and heat the working gas.

[0003] In the existing technology, the heat transfer efficiency and capacity between the heat pipe and the hot-end heater cannot be further improved due to the limited length of the condenser section of the heat pipe extending into the hot-end heater, thus limiting the power increase of the Stirling engine. Summary of the Invention

[0004] This invention provides a Stirling prime mover and a Stirling generator to solve the problem in the prior art where the length of the condenser section of the heat pipe extending into the hot end heater is limited, which prevents the improvement of heat transfer efficiency and capacity between the heat pipe and the hot end heater, and consequently prevents the power of the Stirling engine from being increased. This invention achieves the effect of improving the heat transfer efficiency and capacity between the heat pipe and the hot end heater.

[0005] This invention provides a Stirling prime mover, comprising:

[0006] Stirling engine, including hot-end heater;

[0007] A housing structure capable of accommodating a first working fluid, the housing structure being fitted onto the Stirling engine and disposed opposite to the hot-end heater, such that at least a portion of the hot-end heater is located inside the housing structure;

[0008] A heat pipe includes a condensing section and an evaporating section for connection to a heat source, the condensing section extending into the housing structure.

[0009] According to the present invention, a Stirling prime mover further includes a first liquid-absorbing core disposed inside the housing structure, wherein a first end of the first liquid-absorbing core is connected to the hot end heater, and a second end extends away from the hot end heater.

[0010] According to the present invention, a Stirling prime mover further includes a second liquid-absorbing core, which is disposed in the housing structure, and a first end of the second liquid-absorbing core is close to the hot end heater, and a second end is close to the heat pipe.

[0011] According to the Stirling prime mover provided by the present invention, a third liquid suction core is further included, which is disposed on the outer surface of the condensation section.

[0012] According to the present invention, a Stirling prime mover further includes a support member disposed near the hot end heater, the extension direction of the support member being parallel to the axial direction of the Stirling engine, and both ends of the support member being connected to the inner wall of the housing structure to support the housing structure.

[0013] According to the present invention, a Stirling prime mover further includes a cylindrical structure disposed within the shell structure, both ends of the cylindrical structure being connected to the shell structure, a condensing section extending into the cylindrical structure, and a gap between the condensing section and the cylindrical structure for accommodating a second working fluid.

[0014] According to a Stirling prime mover provided by the present invention, the cylindrical structure is configured as a cylindrical structure or a rectangular cylindrical structure.

[0015] According to a Stirling prime mover provided by the present invention, the rectangular cylinder structure is configured as a plurality of such structures, each of the rectangular cylinder structures is provided with at least two heat pipes, and the plurality of rectangular cylinder structures are arranged in a ring structure.

[0016] According to a Stirling prime mover provided by the present invention, the Stirling engine is configured as an opposed Stirling engine, the opposed Stirling engine includes two hot-end heaters, both of which are at least partially located inside the housing structure;

[0017] And / or, the number of Stirling engines is set to at least two.

[0018] And / or, the number of heat pipes is set to at least two.

[0019] The present invention also provides a Stirling generator, including the Stirling prime mover described above;

[0020] The generator is connected to the Stirling engine, and the Stirling engine can drive the generator to generate electricity.

[0021] The Stirling prime mover provided by this invention heats the first working fluid within the housing structure by fitting a housing structure onto the Stirling engine opposite the hot-end heater. The working fluid inside the heat pipe evaporates and absorbs heat at the heat source, then condenses and releases heat in the condensation section, thereby heating the first working fluid within the housing structure. The first working fluid absorbs heat, evaporates, and then releases heat in the hot-end heater, thus heating the working gas flowing through the hot-end heater within the Stirling engine.

[0022] This configuration offers several advantages. First, compared to existing technologies where the heat pipe extends directly into the hot-end heater, the shell structure, fitted within the Stirling engine and positioned opposite the hot-end heater, provides a larger coupling area, resulting in higher heat transfer efficiency and capacity between the two. Second, the length of the heat pipe's condenser section extending into the shell structure is unrestricted, allowing it to fully penetrate the shell structure and thus fully utilize the heat from the condenser section, improving the efficiency of heat pipe heat utilization.

[0023] In addition, since the heat pipe does not need to extend into the interior of the hot-end heater, there is no need to make major adjustments to the structure of the Stirling engine, or even to the Stirling engine itself, thus allowing the Stirling engine to maintain its advantages of high efficiency and compactness.

[0024] Furthermore, the Stirling generator provided by the present invention incorporates the Stirling prime mover provided by the present invention, and therefore also possesses all the aforementioned advantages of the Stirling prime mover. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the connection structure between the free piston Stirling engine and the linear generator provided in this embodiment of the invention;

[0027] Figure 2 This is a schematic diagram of the structure of the first Stirling prime mover provided in the embodiments of the present invention;

[0028] Figure 3 yes Figure 2 The top view of the view shown;

[0029] Figure 4 This is a schematic diagram of the structure of the second Stirling prime mover provided in the embodiments of the present invention;

[0030] Figure 5 yes Figure 4 The top view of the view shown;

[0031] Figure 6 This is a schematic diagram of the structure of the third Stirling prime mover provided in the embodiments of the present invention;

[0032] Figure 7This is a schematic diagram of the structure of the fourth Stirling prime mover provided in the embodiments of the present invention;

[0033] Figure 8 yes Figure 7 The top view of the view shown;

[0034] Figure 9 This is a schematic diagram of the structure of the fifth Stirling prime mover provided in the embodiments of the present invention;

[0035] Figure 10 yes Figure 9 The top view of the view shown;

[0036] Figure 11 This is a partial schematic diagram of the external shape of the Stirling engine provided in an embodiment of the present invention;

[0037] Figure 12 This is a schematic diagram of the structure of the crank-connecting rod type Stirling engine provided in the embodiment of the present invention.

[0038] Figure label:

[0039] 1. Hot end heater; 2. Regenerator; 3. Cold end heat exchanger; 4. Shell; 5. Discharge device; 6. Power piston; 7. Expansion chamber; 8. Compression chamber; 9. Back chamber; 10. Generator mover; 11. Generator stator; 12. Shell structure; 13. Heat pipe; 14. First liquid suction core; 15. Support component; 16. Cylindrical structure; 17. Rectangular cylinder structure; 18. Connecting rod; 19. Flywheel. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0041] The following is combined with Figures 1 to 12 The Stirling prime mover provided in the embodiments of the present invention is described.

[0042] Specifically, the Stirling prime mover includes a Stirling engine, a housing structure 12, and a heat pipe 13.

[0043] The Stirling engine includes a hot-end heater 1.

[0044] For example, such as Figure 1 As shown, a Stirling engine can be configured as a free-piston Stirling engine. A free-piston Stirling engine also includes a housing 4, an exhaust manifold 5, a power piston 6, a regenerator 2, and a cold-end exhaust manifold 3.

[0045] Both the discharger 5 and the power piston 6 are slidably disposed within the housing 4. The discharger 5 and the first end of the housing 4 form an expansion cavity 7, and the end of the discharger 5 away from the expansion cavity 7 forms a compression cavity 8 with the power piston 6. The end of the power piston 6 away from the compression cavity 8 forms a back cavity 9 with the second end of the housing 4. Along the direction from the expansion cavity 7 to the compression cavity 8, the hot-end heater 1, the regenerator 2, and the cold-end heat exhauster 3 are arranged sequentially. The hot-end heater 1, the regenerator 2, and the cold-end heat exhauster 3 can all be configured as cylindrical or annular structures to allow the discharger 5 to pass through.

[0046] The operation of a free-piston Stirling engine includes:

[0047] First, the power piston 6 starts from the bottom dead center and moves towards the first end of the outer casing 4 simultaneously with the discharger 5, so that the working gas is compressed in the compression chamber 8 and released to the outside through the cold end heat exhauster 3.

[0048] Then, the power piston 6 continues to move towards the first end of the outer casing 4, and the discharger 5 moves towards the second end of the outer casing 4. The working gas flows from the compression chamber 8 through the regenerator 2 into the expansion chamber 7, releasing heat to the regenerator 2 along the way, and the temperature of the working gas decreases.

[0049] Then, the working gas expands within the expansion chamber 7 by absorbing heat from the hot-end heater 1, causing the exhaust device 5 to move towards the second end of the outer casing 4 and pushing the power piston 6 towards the second end of the outer casing 4. During this process, the regenerator 2 converts thermal energy into acoustic energy (mechanical energy), which in turn drives the power piston 6 through the working gas.

[0050] Finally, the power piston 6 continues to move towards the second end of the outer casing 4, the discharger 5 moves towards the first end of the outer casing 4, and the working gas flows from the expansion chamber 7 through the regenerator 2 into the compression chamber 8, releasing heat to the regenerator 2 along the way, causing the temperature of the regenerator 2 to rise and the temperature of the working gas to fall.

[0051] After completing one cycle, thermal energy is converted into mechanical energy, and the power piston 6 and the discharge device 5 undergo simple harmonic motion, with the phase of the discharge device 5 leading that of the power piston 6.

[0052] It should be noted that the working gas in a Stirling engine includes, but is not limited to, helium and hydrogen.

[0053] Of course, the Stirling engine is not limited to a free-piston Stirling engine. For example, see reference... Figure 12As shown, the Stirling engine can also be a crank-connecting rod type Stirling engine. Unlike the free piston Stirling engine, the crank-connecting rod type Stirling engine also includes a flywheel 19 and a connecting rod 18. The exhaust manifold 5 and the power piston 6 are respectively connected to the flywheel 19 via the connecting rod 18. Specifically, the two ends of the connecting rod 18 corresponding to the exhaust manifold 5 are rotatably connected to the exhaust manifold 5 and the flywheel 19, respectively. The two ends of the connecting rod 18 corresponding to the power piston 6 are rotatably connected to the power piston 6 and the flywheel 19, respectively.

[0054] refer to Figures 2-10 As shown, the housing structure 12 is capable of accommodating a first working fluid. The housing structure 12 is fitted onto the Stirling engine and is disposed opposite to the hot-end heater 1, such that at least a portion of the hot-end heater 1 is located inside the housing structure 12. Optionally, the housing structure 12 is fitted onto the outer casing 4 of the Stirling engine and is disposed opposite to the hot-end heater 1. It should be noted that the first working fluid includes, but is not limited to, water, ammonia, acetone, mercury, sodium, and sodium-potassium.

[0055] refer to Figures 2-10 As shown, heat pipe 13 includes a condensing section and an evaporating section for connection to a heat source, with the condensing section extending into the shell structure 12. A working fluid is contained within heat pipe 13, including but not limited to water, ammonia, acetone, mercury, sodium, and sodium-potassium. The working fluid absorbs heat in the evaporating section and evaporates into a gaseous state, then flows to the condensing section where it condenses and releases heat. During use, heat pipe 13 can be arranged vertically with the condensing section above and the evaporating section below, so that the working fluid condensed into a liquid state in the condensing section can flow back to the evaporating section under gravity. Alternatively, a wick can be installed inside heat pipe 13. The wick can be a wire mesh installed inside heat pipe 13, a long groove extending axially along the inner wall of heat pipe 13, or a spiral groove spirally arranged along the inner wall of heat pipe 13. The wick, through capillary force, allows the liquid working fluid in the condensing section to flow back to the evaporating section.

[0056] The Stirling prime mover provided in this embodiment of the invention heats the first working fluid within the housing structure 12 by fitting the housing structure 12 onto the Stirling engine at the position opposite to the hot-end heater 1. The working fluid inside the heat pipe 13 evaporates and absorbs heat at the heat source, then condenses and releases heat in the condensation section, thereby heating the first working fluid within the housing structure 12. The first working fluid absorbs heat, evaporates, and then flows to the hot-end heater 1 to release heat, thereby heating the working gas flowing through the hot-end heater 1 within the Stirling engine.

[0057] This configuration offers several advantages. First, compared to the existing technology where the heat pipe 13 extends directly into the hot-end heater 1, the shell structure 12, fitted onto the Stirling engine and facing the hot-end heater 1, provides a larger coupling area between the shell structure 12 and the hot-end heater 1. This results in higher heat transfer efficiency and capacity between the shell structure 12 and the hot-end heater 1. Here, heat transfer efficiency refers to a faster heat exchange rate between the shell structure 12 and the hot-end heater 1, and higher heat transfer capacity refers to a greater amount of heat exchange between the shell structure and the hot-end heat exchanger. Second, the length of the condenser section of the heat pipe 13 extending into the shell structure 12 is unrestricted, allowing it to fully extend into the shell structure 12. This enables full utilization of the heat from the condenser section of the heat pipe 13, improving its heat utilization rate.

[0058] In addition, since the heat pipe 13 does not need to extend into the interior of the hot end heater 1, there is no need to make major adjustments to the original structure of the Stirling engine, or even any adjustments to the original structure of the Stirling engine, thus enabling the Stirling engine to maintain its advantages of high efficiency and compactness.

[0059] refer to Figure 11 As shown, in some embodiments of the present invention, the outer surface of the hot-end heater 1 is provided with a groove. By providing a groove on the outer surface of the hot-end heater 1, the contact area with the first working fluid inside the shell structure 12 can be increased, thereby further improving the heat transfer efficiency and heat transfer capacity between the hot-end heat exchanger and the shell structure 12.

[0060] refer to Figures 2-10 As shown, in some embodiments provided by the present invention, the Stirling prime mover also includes a first liquid-absorbing core 14 disposed inside the housing structure 12.

[0061] The first end of the first liquid-absorbing core 14 is connected to the hot-end heater 1, and the second end extends away from the hot-end heater 1. The first liquid-absorbing core 14 can draw out the first working fluid from the hot-end heater 1 through capillary force.

[0062] For example, the first end of the first liquid-absorbing core 14 extends into a groove on the outer surface of the hot end heater 1, and the second end extends away from the hot end heater 1.

[0063] The first working fluid releases heat and condenses into a liquid state at the hot-end heater 1, easily accumulating in the groove. On the one hand, the accumulated liquid first working fluid easily hinders heat exchange between the hot-end heater 1 and the gaseous first working fluid, resulting in a decrease in the heat transfer efficiency of the hot-end heater 1. On the other hand, it reduces the amount of first working fluid available for heat conduction within the shell structure, thus leading to a decrease in heat transfer efficiency. By providing the first liquid wick 14, the first working fluid accumulated in the groove on the outer surface of the hot-end heater 1 can be discharged, allowing the first working fluid to re-enter the heat conduction cycle, thereby improving the heat transfer efficiency.

[0064] For example, the first absorbent core 14 may include a wire mesh, one end of which extends into the groove and the other end extends out of the groove. Alternatively, the wire mesh may be wound into a cylindrical structure, one end of which extends into the groove and the other end extends out of the groove. Alternatively, the first absorbent core 14 may include a rod and a wire mesh wound around the rod, one end of which extends into the groove and the other end extends out of the groove. Alternatively, the first absorbent core 14 may include a rod, the outer wall of which has a spiral groove spirally arranged along the outer surface of the rod, or a long groove extending axially along the outer wall of the rod.

[0065] Furthermore, the number of grooves is set to multiple, and the number of first liquid-absorbing cores 14 is the same as the number of grooves and corresponds one-to-one.

[0066] In some embodiments provided by the present invention, the Stirling prime mover also includes a second liquid suction core.

[0067] The second liquid-absorbing core is disposed on the housing structure 12, with the first end of the second liquid-absorbing core close to the hot end heater 1 and the second end close to the heat pipe 13.

[0068] By setting a second wick, the first working fluid, which condenses into a liquid state at the hot end heater 1, can travel along the second wick to the condensation section of the heat pipe 13 to reabsorb heat, thereby improving the circulation efficiency of the first working fluid between the condensation section and the hot end heater 1, and thus improving the heat transfer efficiency.

[0069] For example, the second liquid-absorbing core can be a wire mesh disposed inside the housing structure 12, such as a sintered wire mesh. Alternatively, the second liquid-absorbing core can be an elongated groove disposed on the inner surface of the housing structure 12.

[0070] In some embodiments provided by the present invention, the Stirling prime mover also includes a third liquid suction core.

[0071] The third liquid suction core is located on the outer surface of the condensation section.

[0072] By setting a third wicking core, the first working fluid can be distributed along the third wicking core on the outer surface of the condensing section, thereby preventing the first working fluid from accumulating only at the bottom of the condensing section. This increases the contact area between the first working fluid and the condensing section, thereby improving the heating effect and efficiency of the condensing section on the first working fluid.

[0073] For example, the third suction core may include a wire mesh wound and covering the surface of the condensation section. Alternatively, the third suction core may include an elongated groove disposed on the outer surface of the condensation section and extending axially along the condensation section. Alternatively, the third suction core may include a spiral groove disposed on the outer surface of the condensation section and spirally arranged along the outer surface of the condensation section.

[0074] refer to Figures 2-10As shown, in some embodiments provided by the present invention, the Stirling prime mover further includes a support member 15, which is disposed near the hot-end heater 1. The extending direction of the support member 15 is parallel to the axial direction of the Stirling engine, and both ends of the support member 15 are connected to the inner wall of the housing structure 12 to support the housing structure 12. It should be noted that the axial direction of the Stirling engine refers to the displacement direction of the exhaust device 5.

[0075] By providing a support member 15 to support the shell structure 12, the problem of deformation of the shell structure 12 due to increased temperature and pressure can be avoided.

[0076] Optionally, the number of support members 15 is set to multiple, and the multiple support members 15 are evenly distributed along the circumference of the Stirling engine. Further, two support members 15 form a group, and multiple groups of support members 15 are evenly distributed along the circumference of the Stirling engine. Two support members 15 in each group are distributed radially along the Stirling engine, and there is a gap between the two support members 15 to improve the permeability of the gaseous second working fluid.

[0077] refer to Figures 4-6 , Figure 9 and Figure 10 As shown, in some embodiments provided by the present invention, the Stirling prime mover also includes a cylindrical structure.

[0078] The cylindrical structure is housed within the shell structure 12, with both ends connected to the shell structure 12. A condensing section extends into the cylindrical structure, and a gap exists between the condensing section and the cylindrical structure to accommodate a second working fluid. The second working fluid includes, but is not limited to, water, ammonia, acetone, mercury, sodium, and sodium-potassium compounds. During operation, the condensing section of the heat pipe 13 transfers heat to the cylindrical structure via the second working fluid, and then transfers it to the first working fluid within the shell structure 12 via the cylindrical structure.

[0079] By setting up a cylindrical structure, the assembly precision requirements for the heat pipe 13 to extend into the shell structure 12 can be reduced, thereby reducing the assembly difficulty and having better engineering applicability.

[0080] Furthermore, the third liquid-absorbing core is disposed on the outer surface of the cylindrical structure.

[0081] Alternatively, the extension direction of the cylinder structure is parallel to the axis of the Stirling engine.

[0082] Optionally, the first end of the housing structure 12 is fitted onto the Stirling engine, and the second end of the housing structure 12 is used for the extension of the heat pipe 13. The thickness of the second end of the housing structure 12 can be determined by the length of the condensing section of the heat pipe 13, so that the condensing section can be fully extended into the housing structure 12.

[0083] In some embodiments provided by the present invention, the cylindrical structure is configured as a cylindrical structure 16 or a rectangular cylindrical structure 17.

[0084] refer to Figure 10 As shown, in some embodiments of the present invention, multiple rectangular cylindrical structures 17 are provided, each rectangular cylindrical structure 17 is provided with at least two heat pipes 13, and the multiple rectangular cylindrical structures 17 are arranged in a ring structure.

[0085] By arranging multiple rectangular cylindrical structures into a ring structure, the problem of reduced heat exchange caused by the inability of the first working fluid inside the shell structure 12 to flow back to the heat pipe 13 at the center can be avoided.

[0086] refer to Figure 6 As shown, in some embodiments provided by the present invention, the Stirling engine is configured as an opposed Stirling prime mover.

[0087] The opposed Stirling engine includes two hot-end heaters 1, both of which are at least partially located inside the housing structure 12. It should be noted that the opposed Stirling engine actually consists of two Stirling engines placed opposite each other, with the first ends of the two Stirling engines coaxially arranged and interconnected, meaning that the two Stirling engines share a single expansion chamber 7.

[0088] Thus, the moving parts of the opposed Stirling engine experience forces of equal magnitude but opposite direction. Through phase cancellation, the vibration of the Stirling engine can be significantly reduced, and the working efficiency of a single engine can be effectively improved. Simultaneously, the housing structure 12 and heat pipe 13 can simultaneously heat the two hot-end heaters 1, resulting in a simple structure that is easy to manufacture.

[0089] refer to Figure 7 , Figure 8 As shown, in some embodiments provided by the present invention, the number of Stirling engines is set to at least two.

[0090] This configuration allows a single heat source to simultaneously heat the hot-end heaters 1 of at least two Stirling engines. Furthermore, by simultaneously supplying heat to at least two Stirling engines through the housing structure 12, even if some Stirling engines stop operating while at least two Stirling engines are running, there will be no uneven heat flow to the heat source.

[0091] refer to Figures 2-10 As shown, in some embodiments provided by the present invention, the number of heat pipes 13 is set to at least two. By setting at least two heat pipes 13, the problem of single-point failure of a constant heat flow heat source can be avoided, and even if a heat pipe 13 fails, it will not affect the heat exchange process.

[0092] This invention also provides a Stirling generator.

[0093] Specifically, a Stirling generator includes a generator and a Stirling prime mover as described above.

[0094] The generator is connected to the Stirling engine so that the Stirling engine can drive the generator to produce electricity.

[0095] refer to Figure 1 As shown, optionally, the generator is configured as a linear generator. And the Stirling engine is configured as a free-piston Stirling engine. The linear generator includes a generator stator 11 and a generator mover 10. (Reference) Figure 1 As shown, the generator stator 11 is connected to the housing 4 of the free-piston Stirling engine, and the generator mover 10 is connected to the power piston 6. The power piston 6 drives the generator mover 10 to move, causing the generator mover 10 to move relative to the generator stator 11, thereby generating electrical energy. For example, the generator stator 11 can be a generator coil, and the generator mover 10 can be a generator magnet.

[0096] Of course, the generator is not limited to being a linear generator. For example, in other embodiments provided by the present invention, the generator is configured as a rotary generator, and the Stirling engine is configured as a crank-connecting rod type Stirling engine. The input shaft of the rotary generator is connected to the flywheel of the crank-connecting rod type engine so that the flywheel can drive the rotary generator to rotate and generate electricity.

[0097] It should be noted that the Stirling generator includes all the advantages of the Stirling prime mover, which will not be elaborated here.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A Stirling prime mover, characterized in that, include: Stirling engine, including hot-end heater (1); A housing structure (12) capable of accommodating a first working fluid is fitted onto the Stirling engine and disposed opposite to the hot-end heater (1). The housing structure (12) surrounds and encloses the hot-end heater (1) such that at least a portion of the hot-end heater (1) is located inside the housing structure (12). The heat pipe (13) includes a condensing section and an evaporating section for connection to a heat source, the condensing section extending into the shell structure (12) and the condensing section being completely located inside the shell structure (12); The coupling area between the shell structure (12) and the hot end heater (1) is greater than the coupling area between the heat pipe (13) and the hot end heater (1) when the heat pipe (13) extends directly into the hot end heater (1).

2. The Stirling prime mover according to claim 1, characterized in that, It also includes a first liquid-absorbing core (14) disposed inside the housing structure (12), the first end of the first liquid-absorbing core (14) being connected to the hot end heater (1), and the second end extending away from the hot end heater (1).

3. The Stirling prime mover according to claim 1, characterized in that, It also includes a second liquid-absorbing core, which is disposed in the housing structure (12), with a first end of the second liquid-absorbing core close to the hot end heater (1) and a second end close to the heat pipe (13).

4. The Stirling prime mover according to claim 1, characterized in that, It also includes a third liquid-absorbing core, which is disposed on the outer surface of the condensation section.

5. The Stirling prime mover according to claim 1, characterized in that, It also includes a support member (15) which is located close to the hot end heater (1). The extension direction of the support member (15) is parallel to the axial direction of the Stirling engine, and both ends of the support member (15) are connected to the inner wall of the housing structure (12) to support the housing structure (12).

6. The Stirling prime mover according to claim 1, characterized in that, It also includes a cylindrical structure, which is disposed within the shell structure (12), and both ends of the cylindrical structure are connected to the shell structure (12). The condensing section extends into the cylindrical structure, and there is a gap between the condensing section and the cylindrical structure for accommodating the second working fluid.

7. The Stirling prime mover according to claim 6, characterized in that, The cylindrical structure is configured as a cylindrical structure (16) or a rectangular cylindrical structure (17).

8. The Stirling prime mover according to claim 7, characterized in that, The rectangular cylindrical structure (17) is configured as a plurality of such structures, each of which is provided with at least two heat pipes (13), and the plurality of rectangular cylindrical structures (17) are arranged in a ring structure.

9. The Stirling prime mover according to claim 1, characterized in that, The Stirling engine is configured as an opposed Stirling engine, which includes two hot-end heaters (1), both of which are at least partially located inside the housing structure (12); And / or, the number of Stirling engines is set to at least two; And / or, the number of heat pipes (13) is set to at least two.

10. A Stirling generator, characterized in that, Includes a generator and a Stirling prime mover as described in any one of claims 1-9; The generator is connected to the Stirling engine, and the Stirling engine can drive the generator to generate electricity.

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