A shaft-biased shape memory alloy thermoelectric engine

Abstract

This invention belongs to the field of heat engine technology and discloses a shaft-biased shape memory alloy heat engine, including a chamber, a rotor, an eccentric shaft, and multiple shape memory alloy springs. The chamber has a receiving groove; the rotor is disposed in the receiving groove and is rotatably connected to the chamber; the eccentric shaft is disposed in the receiving groove, with both ends connected to the chamber, and multiple sets of connecting plates are sleeved on the eccentric shaft, spaced apart along the length of the eccentric shaft; multiple shape memory alloy springs are circumferentially spaced on each connecting plate, with both ends of the shape memory alloy springs connected to the connecting plate and the rotor, respectively. Thus, the multiple sets of shape memory alloy springs on the eccentric shaft enable continuous conversion of thermal energy to mechanical energy when carrying a high-temperature heat medium in the chamber, improving the energy conversion efficiency and stability of the shaft-biased shape memory alloy heat engine.

Description

Technical Field

[0001] This invention relates to the field of heat engine technology, and more particularly to a shaft-biased shape memory alloy heat engine. Background Technology

[0002] A heat engine is a device that can convert thermal energy into mechanical energy. A shape memory alloy heat engine is a type of heat engine that utilizes the properties of shape memory alloy materials.

[0003] Shape memory alloys are alloy materials with special crystal structures that can undergo reversible phase transitions when the temperature changes to a certain extent, thus exhibiting a shape memory effect. The mechanical and other properties of shape memory alloys also differ at different temperatures, thereby realizing the conversion of thermal energy into mechanical energy.

[0004] Existing shape memory alloy heat engines typically include a chamber, a rotor, and an eccentric shaft. A set of shape memory alloy springs is circumferentially arranged on the side wall of the eccentric shaft, which enables the rotor to rotate relative to the chamber under temperature changes. However, when the rotor rotates, due to the weak deformation of a single set of shape memory alloy springs, not only is the rotor speed low, but discontinuous rotation may also occur, resulting in low energy conversion efficiency and poor stability of the shape memory alloy heat engine. Summary of the Invention

[0005] The purpose of this invention is to provide a shaft-biased shape memory alloy heat engine to solve the problems of low energy conversion efficiency and poor stability of shape memory alloy heat engines.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A rotating shaft biased shape memory alloy thermoelectric generator includes: a silo with a receiving groove; a rotor disposed within the receiving groove and rotatably connected to the silo; an eccentric shaft disposed within the receiving groove, with both ends connected to the silo, and multiple sets of connecting plates sleeved on the eccentric shaft, the multiple sets of connecting plates being spaced apart along the length direction of the eccentric shaft; and multiple shape memory alloy springs, with multiple shape memory alloy springs circumferentially spaced on each set of connecting plates, the two ends of each shape memory alloy spring being connected to the connecting plate and the rotor, respectively.

[0008] Preferably, the rotor includes a turntable and a fixed guide rail. There are two turntables, which are rotatably connected to the hopper. There are multiple fixed guide rails, with each end of the fixed guide rail connected to one of the two turntables. The eccentric shaft and the memory alloy spring are both disposed within the space formed by the turntables and the fixed guide rails.

[0009] Preferably, the silo is connected to two mounting bosses, and each turntable is connected to a corresponding connecting bearing. The connecting bearings are arranged in a one-to-one correspondence with the mounting bosses so that the rotor rotates relative to the mounting bosses. The two ends of the eccentric shaft are respectively connected to the two mounting bosses.

[0010] Preferably, the memory alloy spring includes a telescopic part and a mounting part. Each memory alloy spring is provided with one telescopic part and two mounting parts. The two mounting parts are respectively disposed at both ends of the telescopic part and are detachably connected to the connecting piece and the fixed guide rail, respectively.

[0011] Preferably, the turntable sidewall is provided with a plurality of fixing grooves in the circumferential direction, and the end of the fixing guide rail is disposed in the fixing groove.

[0012] Preferably, the length direction of the fixed guide rail is set at an angle to the central axis of the rotor.

[0013] Preferably, the angle β of the relative rotation of the fixing slots corresponding to the two fixing ends of each fixing guide rail around the rotor central axis satisfies... The shape memory alloy spring deflection angle α of the adjacent connecting pieces satisfies Where m is the number of shape memory alloy springs on a single set of connecting pieces, and n is the number of sets of connecting pieces.

[0014] Preferably, the shaft-biased shape memory alloy thermoelectric engine further includes a circulating water module, the silo is connected to an input pipe and an output pipe, and the circulating water module is connected to both the input pipe and the output pipe.

[0015] Preferably, the circulating water module includes a temperature control unit, and the shaft bias memory alloy thermoelectric generator also includes a detection module. The detection module includes a laser tachometer and a data integration and control unit. The laser tachometer is connected to the rotor and is used to detect the rotor speed. Both the laser tachometer and the temperature control unit are communicatively connected to the data integration and control unit.

[0016] Preferably, the shaft-biased shape memory alloy thermoengine further includes an output module, which includes a pulley and a generator, and the rotor is connected to the generator via the pulley.

[0017] The beneficial effects of this invention are:

[0018] A rotating shaft biased shape memory alloy thermoelectric engine includes a silo, a rotor, an eccentric shaft, and multiple shape memory alloy springs. The silo has a receiving groove. The rotor is disposed in the receiving groove and is rotatably connected to the silo. The eccentric shaft is disposed in the receiving groove and its two ends are connected to the silo. Multiple sets of connecting plates are sleeved on the eccentric shaft and are spaced apart along the length of the eccentric shaft. Multiple shape memory alloy springs are spaced apart circumferentially on each set of connecting plates, and the two ends of the shape memory alloy springs are connected to the connecting plates and the rotor, respectively.

[0019] Thus, by arranging multiple sets of shape memory alloy springs in parallel on the eccentric shaft, the shape memory alloy springs can drive the rotor to rotate when the high-temperature heat medium is carried inside the silo, realizing the continuous conversion of thermal energy into mechanical energy, and improving the energy conversion efficiency and stability of the shaft-biased shape memory alloy heat engine, avoiding the phenomenon of discontinuous rotor rotation. When one or more shape memory alloy springs break or deform, the remaining shape memory alloy springs can continue to drive the rotor to rotate, resulting in high output power and large output torque of the shaft-biased shape memory alloy heat engine, and making the structure of the shaft-biased shape memory alloy heat engine more compact, with high redundancy and a wide range of applications. Attached Figure Description

[0020] Figure 1 This is a partial structural schematic diagram of the shaft-biased shape memory alloy heat engine in Embodiment 1 of the present invention;

[0021] Figure 2 This is a schematic diagram of the connecting piece and the shape memory alloy spring in Embodiment 1 of the present invention;

[0022] Figure 3 This is a schematic diagram of the rotor structure in Embodiment 1 of the present invention;

[0023] Figure 4 This is a schematic diagram of the eccentric shaft in Embodiment 1 of the present invention;

[0024] Figure 5 This is a schematic diagram of the silo structure in Embodiment 1 of the present invention;

[0025] Figure 6 This is a schematic diagram of the second partial structure of the shaft-biased shape memory alloy heat engine in Embodiment 1 of the present invention;

[0026] Figure 7 This is a schematic diagram of the shaft-biased shape memory alloy heat engine in Embodiment 2 of the present invention;

[0027] Figure 8 This is a schematic diagram of the shaft-biased shape memory alloy heat engine in Embodiment 3 of the present invention.

[0028] In the picture:

[0029] 1. Silo; 11. Receiving groove; 12. Mounting boss; 13. Input pipe; 14. Output pipe; 2. Rotor; 21. Turntable; 211. Connecting bearing; 212. Fixing groove; 22. Fixing guide rail; 23. Output shaft; 3. Eccentric shaft; 31. Connecting piece; 311. Connecting screw; 312. Connecting nut; 4. Memory alloy spring; 41. Telescopic part; 42. Mounting part; 5. Circulating water module; 6. Detection module; 61. Laser tachometer; 62. Data integration and control unit; 63. Gearbox; 64. Brake; 7. Output module; 71. Pulley; 72. Generator; 73. Hydrothermal source. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0031] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0034] Example 1

[0035] See Figure 1 and Figure 2 This invention provides a shaft-biased shape memory alloy heat engine, including a silo 1, a rotor 2, an eccentric shaft 3, and multiple shape memory alloy springs 4. The silo 1 has a receiving groove 11; the rotor 2 is disposed in the receiving groove 11 and is rotatably connected to the silo 1; the eccentric shaft 3 is disposed in the receiving groove 11, and its two ends are connected to the silo 1. Multiple sets of connecting plates 31 are sleeved on the eccentric shaft 3, and the multiple sets of connecting plates 31 are spaced apart along the length direction of the eccentric shaft 3; multiple shape memory alloy springs 4 are spaced apart circumferentially on each set of connecting plates 31, and the two ends of the shape memory alloy springs 4 are respectively connected to the connecting plate 31 and the rotor 2.

[0036] In this embodiment, the silo 1 is a semi-cylindrical structure with an open top, and the silo 1 is made of transparent material. The length direction of the receiving groove 11 is parallel to the length direction of the silo 1. The outer radius of the rotor 2 is 100mm. The length direction of the rotor 2 is parallel to the length direction of the silo 1, and the rotation axis of the rotor 2 is parallel to the length direction of the silo 1. The two ends of the rotor 2 are rotatably connected to the two ends of the silo 1. The length direction of the eccentric shaft 3 is parallel to the length direction of the silo 1, and it is eccentrically set inside the silo 1. The eccentricity of the eccentric shaft 3 is 30mm. The two ends of the eccentric shaft 3 are fixedly connected to the silo 1. The connecting piece 31 is sleeved on the eccentric shaft 3 and rotatably connected to the eccentric shaft 3.

[0037] Furthermore, the connecting piece 31 has a disc structure, and multiple sets of connecting pieces 31 are spaced apart on the eccentric shaft 3. That is, the memory alloy springs 4 set on the multiple sets of connecting pieces 31 are equally spaced; a set of connecting pieces 31 has twelve memory alloy springs 4 evenly spaced around the circumference.

[0038] Thus, multiple sets of shape memory alloy springs 4 are mounted on the eccentric shaft 3. When the chamber 1 carries a high-temperature heat medium (such as hot liquid or hot gas), the eccentric shaft 3 can cause the resultant torque of the shape memory alloy springs 4 to deviate from equilibrium, thereby driving the rotor 2 to rotate. Since the rotor 2 is connected to the end of the shape memory alloy springs 4 that is away from the eccentric shaft 3, the rotor 2 can drive multiple sets of shape memory alloy springs 4 to continue rotating when it rotates, thereby realizing the continuous conversion of thermal energy to mechanical energy, improving the energy conversion efficiency of the shaft-biased shape memory alloy heat engine, and enhancing the stability of the shaft-biased shape memory alloy heat engine, avoiding the phenomenon of discontinuous rotation of the rotor 2. When one or more sets of shape memory alloy springs 4 are deformed or broken, the other shape memory alloy springs 4 can continue to deform and make the rotor 2 rotate, so that the shaft-biased shape memory alloy heat engine has high output power, large output torque, reliable structure, and can achieve high integration, high redundancy, and wide applicability.

[0039] It is understandable that the shape memory alloy spring 4 can be helical or zigzag, as long as it can undergo a large deformation in its length direction. The shape memory alloy spring 4 is made of nickel-titanium shape memory alloy material. The material of the shape memory alloy spring 4 can also be nickel-based shape memory alloy, iron-based shape memory alloy, or other materials with shape memory effect. The specific shape and material of the shape memory alloy spring 4 can be flexibly adjusted according to actual needs, as long as it can generate a shape memory effect under temperature changes and drive the rotor 2 to rotate. Not much will be listed here. Furthermore, the number of shape memory alloy springs 4 on a set of connecting pieces 31 and the number of sets of connecting pieces 31 on an eccentric shaft 3 can be adjusted according to actual needs.

[0040] It should be noted that when rotor 2 rotates clockwise, the area below the water level is a high-temperature heat medium. At this time, the temperature of the shape memory alloy spring 4 below the water level rises and undergoes an austenitic transformation, which increases the elastic coefficient of the shape memory alloy spring 4. The shape memory alloy spring 4 above the water level is in a lower temperature environment, so its elastic coefficient is smaller. The resultant torque of the tension of the shape memory alloy spring 4 above and below the water level on the rotation axis of rotor 2 is clockwise, causing each shape memory alloy spring 4 to start rotating clockwise. During the rotation, the shape memory alloy spring 4 entering the high-temperature heat medium undergoes an austenitic transformation, and the phase transformation stress increases the elastic coefficient of the shape memory alloy spring 4. The shape memory alloy spring 4 leaving the high-temperature heat medium undergoes a martensitic transformation through air cooling, and its elastic coefficient decreases. This keeps the overall resultant force state of the connecting piece 31 unchanged, thus realizing the continuous clockwise rotation of rotor 2.

[0041] See Figures 1 to 4 In some embodiments, the rotor 2 includes a turntable 21 and a fixed guide rail 22. There are two turntables 21, which are rotatably connected to the bin 1 respectively. There are multiple fixed guide rails 22, with both ends of the fixed guide rails 22 connected to the two turntables 21 respectively. The eccentric shaft 3 and the memory alloy spring 4 are both arranged in the space formed by the turntables 21 and the fixed guide rails 22.

[0042] In this embodiment, the high-temperature heat medium is hot water, and the water level line of the hot water is flush with the axis of the turntable 21 (that is, the distance between the water level line and the axis of the turntable 21 is 0). There are 12 fixed guide rails 22. That is, the end of each memory alloy spring 4 on the same set of connecting pieces 31 that is away from the connecting piece 31 is connected to each fixed guide rail 22. Both ends of each fixed guide rail 22 are detachably connected to the two turntables 21 by bolts. The diameter of the turntable 21 is smaller than the diameter of the silo 1.

[0043] Thus, the fixed guide rail 22 and the connecting piece 31 can restrict the position of the shape memory alloy spring 4, so that the shape memory alloy spring 4 on each set of connecting pieces 31 can be radially connected to the rotor 2, thereby realizing the stable and continuous rotation of the rotor 2 and improving the energy conversion efficiency and stability of the shaft bias shape memory alloy heat engine.

[0044] It is understandable that the water level of the hot water can be higher or lower than the axis of the turntable 21, but it cannot submerge the entire rotor 2. In this embodiment, the power of the shaft-biased shape memory alloy heat engine is highest when the water level is flush with the axis of the turntable 21. The number of fixed guide rails 22 and the connection method with the turntable 21 can be flexibly adjusted, and will not be described in detail here.

[0045] See Figures 3 to 5 In some embodiments, the silo 1 is connected to two mounting bosses 12, and each turntable 21 is connected to a corresponding connecting bearing 211. The connecting bearings 211 and the mounting bosses 12 are arranged in a one-to-one correspondence so that the rotor 2 rotates relative to the mounting bosses 12. The two ends of the eccentric shaft 3 are respectively connected to the two mounting bosses 12.

[0046] Two mounting bosses 12 are provided on the two end walls of the receiving groove 11. The mounting bosses 12 are cylindrical structures. The two turntables 21 are rotatably connected to the mounting bosses 12 through corresponding connecting bearings 211. The two ends of the eccentric shaft 3 are fixedly connected to the mounting bosses 12.

[0047] Thus, the mounting boss 12 can stably support the rotor 2 and make the rotor 2 rotate smoothly and continuously. Compared with connecting the rotor 2 and the chamber 1 through the rotating shaft, the mounting boss 12 can make the structure of the shaft-biased shape memory alloy heat engine more compact, and at the same time avoid the movement interference between the rotor 2 and the shape memory alloy spring 4 when the rotor 2 rotates, thereby improving the stability of the shaft-biased shape memory alloy heat engine.

[0048] It is understandable that the connection between the mounting boss 12 and the turntable 21 can be flexibly adjusted. In this embodiment, the mounting boss 12 and the turntable 21 are connected by the connecting bearing 211 in order to reduce the resistance during the rotation of the turntable 21 and improve the energy conversion efficiency of the shaft bias memory alloy heat engine.

[0049] See Figure 1 and Figure 2 In some embodiments, the memory alloy spring 4 includes a telescopic part 41 and a mounting part 42. Each memory alloy spring 4 is provided with one telescopic part 41 and two mounting parts 42. The two mounting parts 42 are respectively provided at both ends of the telescopic part 41, and the two mounting parts 42 are detachably connected to the connecting piece 31 and the fixed guide rail 22 respectively.

[0050] In this embodiment, the connecting piece 31 is connected with a connecting screw 311 and a connecting nut 312. A set of connecting pieces 31 includes two connecting pieces 31. The connecting screw 311 and the connecting nut 312 can press the two connecting pieces 31 together and fix one of the mounting parts 42 of the memory alloy spring 4, so that the relative position of the memory alloy spring 4 and the connecting piece 31 is fixed. The other mounting part 42 of the memory alloy spring 4 is arranged towards the fixed guide rail 22. The fixed guide rail 22 is connected with a connector (not shown in the figure). The connector is connected to the mounting part 42 so that the memory alloy spring 4 is connected to the fixed guide rail 22.

[0051] It is understood that the connector can be a rivet, bolt, slider or other structure. The type of connector can be flexibly adjusted according to actual needs. The fixed guide rail 22 can be provided with a groove (not shown in the figure) for accommodating the connector, so as to limit the shape memory alloy spring 4. This embodiment does not limit this.

[0052] See Figure 1 In some embodiments, the side wall of the turntable 21 is provided with a plurality of fixing grooves 212. The ends of the fixing guide rails 22 are disposed in the fixing grooves 212. That is, each fixing guide rail 22 includes two fixing ends (not shown in the figure). The two fixing ends are respectively disposed at both ends of the fixing guide rail 22 and are respectively disposed in the fixing grooves 212 of the two turntables 21. Bolts pass through the fixing grooves 212 and connect the fixing guide rails 22 and the turntables 21.

[0053] Thus, when one or more memory alloy springs 4 break or deform, the corresponding fixed guide rail 22 can be removed to quickly replace the memory alloy spring 4, thereby improving the stability of the shaft bias memory alloy thermoelectric engine and keeping the energy conversion efficiency stable.

[0054] See Figure 3 In some embodiments, the length direction of the fixed guide rail 22 is set at an angle to the central axis of the rotor 2, that is, the fixed guide rail 22 is deflected on the turntable 21.

[0055] Thus, when rotor 2 rotates, the number of springs entering the high-temperature heat medium from the air is unevenly distributed over time, causing drastic changes in the resultant torque and resulting in uneven rotational speed. By deflecting the fixed guide rail 22, the shape memory alloy springs 4 can be evenly distributed within the circumference, ensuring that the number of shape memory alloy springs 4 remains constant at all times. This enables the shaft-biased shape memory alloy heat engine to maintain stable and uniform operation even under load, extending its service life and improving its stability and energy conversion efficiency.

[0056] It is understandable that the length direction of the fixed guide rail 22 can also be parallel to the central axis of the rotor 2. The angle between the length direction of the fixed guide rail 22 and the central axis of the rotor 2 can be flexibly adjusted according to actual design needs and the performance of the memory alloy spring 4. This will not be listed in detail here.

[0057] See Figures 1 to 3 In some embodiments, the angle β of the relative rotation of the fixing slots 212 corresponding to the two fixed ends of each fixed guide rail 22 around the central axis of the rotor 2 satisfies The deflection angle α of the shape memory alloy spring 4 of the adjacent connecting piece 31 satisfies Where m is the number of shape memory alloy springs 4 on a single set of connecting pieces 31, and n is the number of sets of connecting pieces 31. In this embodiment, the deflection angle α of the shape memory alloy springs 4 of adjacent connecting pieces 31 is 1.875°, and the angle β of the relative rotation of the fixing slots 212 corresponding to the two fixed ends of each fixed guide rail 22 around the central axis of the rotor 2 (that is, the deflection angle of the fixed guide rail 22) is 30°.

[0058] Furthermore, in some embodiments, the length L1 of rotor 2 satisfies L1=n(d1+1)+2d2, where n is the number of groups of connecting pieces 31, d1 is the thickness of connecting pieces 31, and d2 is the thickness of turntable 21. For example, the number of groups of connecting pieces 31 n is 16, the thickness of connecting pieces 31 d1 is 14mm, and the thickness of turntable 21 d2 is 16mm. Thus, the length L1 of rotor 2 is 272mm.

[0059] In other embodiments, the length L2 of the fixed guide rail 22 satisfies Where R is the radius of rotor 2. For example, the radius R of rotor 2 is 100mm. Therefore, the length L2 of fixed guide rail 22 is approximately 275.02mm.

[0060] See Figure 6 In some embodiments, the shaft-biased shape memory alloy heat engine further includes a circulating water module 5. The silo 1 is connected to an input pipe 13 and an output pipe 14, and the circulating water module 5 is connected to both the input pipe 13 and the output pipe 14. In this embodiment, the input pipe 13 and the output pipe 14 are respectively located at both ends of the silo 1.

[0061] In this way, the circulating water module 5 can regulate the temperature of the heat medium inside the silo 1 by circulating and heating the heat medium, and keep the temperature of the heat medium inside the silo 1 constant.

[0062] Understandably, the inlet pipe 13 can also be used to connect with a heat medium that stores waste heat, so that the heat medium enters the silo 1 and converts the waste heat into mechanical energy, and the cooled heat medium is transported to the outside through the outlet pipe 14.

[0063] Example 2

[0064] See Figure 7 The difference from Embodiment 1 is that in some embodiments, the circulating water module 5 includes a temperature control unit (not shown in the figure), and the shaft bias memory alloy thermoelectric engine also includes a detection module 6. The detection module 6 includes a laser tachometer 61 and a data integration and control unit 62. The laser tachometer 61 is connected to the rotor 2 and is used to detect the rotational speed of the rotor 2. Both the laser tachometer 61 and the temperature control unit are communicatively connected to the data integration and control unit 62.

[0065] Continue to refer to Figure 7 The detection module 6 also includes a transmission 63 and a Branisbrough brake 64. One end of the rotor 2 is fixedly connected to an output shaft 23. The end of the output shaft 23 away from the rotor 2 is connected to the transmission 63. The output end of the transmission 63 is connected to the Branisbrough brake 64. The data integration and control unit 62 is communicatively connected to the Branisbrough brake 64.

[0066] It should be noted that activating the temperature control module heats the heat medium in the circulating water module 5, allowing the heated heat medium to enter the chamber 1 and drive the rotor 2 to rotate under the action of the shape memory alloy spring 4. After the temperature of the heat medium inside the chamber 1 stabilizes to the set temperature, the rotor 2 rotates at a stable speed. The laser tachometer 61 is activated, and the rotational speed of the rotor 2 is obtained through the laser beam. By adjusting the Branisbrück 64, the resistance torque can be gradually increased, and a constant torque is applied to the rotor 2 through the gearbox 63 and the output shaft 23. The data integration and control module can obtain the coordinate points of the output power of the shaft-biased shape memory alloy heat engine with respect to temperature, rotational speed, and resistance torque.

[0067] Thus, by using the detection module 6 to detect and adjust the shaft-biased shape memory alloy heat engine, it is easy to adjust the shaft-biased shape memory alloy heat engine to maximize its output power and improve its energy conversion efficiency.

[0068] Example 3

[0069] See Figure 8 The difference from Embodiment 1 is that, in some embodiments, the shaft-biased shape memory alloy thermoelectric engine further includes an output module 7, which includes a pulley 71 and a generator 72, with the rotor 2 connected to the generator 72 via the pulley 71. The output module 7 also includes a hydrothermal source 73, which is connected to the input pipe 13.

[0070] In this way, by inputting a high-temperature heat medium into the silo 1, the shaft-biased shape memory alloy heat engine can convert thermal energy into mechanical energy, and then convert it into electrical energy through the generator 72, thereby realizing waste heat utilization and improving the energy conversion efficiency of the shaft-biased shape memory alloy heat engine.

[0071] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A shaft-biased shape memory alloy thermoelectric engine, characterized in that, include: A silo (1) is provided with a receiving groove (11); Rotor (2), the rotor (2) is disposed in the receiving groove (11), and the rotor (2) is rotatably connected to the bin (1); An eccentric shaft (3) is disposed in the receiving groove (11). Both ends of the eccentric shaft (3) are connected to the bin (1). Multiple sets of connecting pieces (31) are sleeved on the eccentric shaft (3). The multiple sets of connecting pieces (31) are spaced apart along the length direction of the eccentric shaft (3). Multiple shape memory alloy springs (4) are arranged circumferentially on a set of connecting pieces (31). The two ends of the shape memory alloy springs (4) are respectively connected to the connecting pieces (31) and the rotor (2). The rotor (2) includes a turntable (21) and a fixed guide rail (22). There are two turntables (21), which are rotatably connected to the bin (1) respectively. There are multiple fixed guide rails (22), which are connected to the two turntables (21) at both ends respectively. The eccentric shaft (3) and the memory alloy spring (4) are both located in the space formed by the turntables (21) and the fixed guide rails (22). The turntable (21) has multiple fixing grooves (212) circumferentially opened on its side wall, and the end of the fixing guide rail (22) is disposed in the fixing groove (212); The length direction of the fixed guide rail (22) is set at an angle to the central axis of the rotor (2); The angle β of the relative rotation of the two fixed ends of each fixed guide rail (22) corresponding to the fixed groove (212) around the central axis of the rotor (2) satisfies The deflection angle α of the shape memory alloy spring (4) of the adjacent connecting piece (31) satisfies ,in, The number of shape memory alloy springs (4) on a single connecting piece (31), The number of groups of the connecting piece (31).

2. The shaft-biased shape memory alloy thermomechanical system according to claim 1, characterized in that, The silo (1) is connected to two mounting bosses (12), and each turntable (21) is connected to a corresponding connecting bearing (211). The connecting bearings (211) and the mounting bosses (12) are arranged in a one-to-one correspondence so that the rotor (2) rotates relative to the mounting bosses (12). The two ends of the eccentric shaft (3) are respectively connected to the two mounting bosses (12).

3. The shaft-biased shape memory alloy thermomechanical system according to claim 1, characterized in that, The memory alloy spring (4) includes a telescopic part (41) and a mounting part (42). Each memory alloy spring (4) is provided with one telescopic part (41) and two mounting parts (42). The two mounting parts (42) are respectively provided at both ends of the telescopic part (41). The two mounting parts (42) are detachably connected to the connecting piece (31) and the fixed guide rail (22).

4. The shaft-biased shape memory alloy thermoelectric engine according to any one of claims 1-3, characterized in that, The shaft bias memory alloy thermoelectric engine also includes a circulating water module (5). The silo (1) is connected to an input pipe (13) and an output pipe (14). The circulating water module (5) is connected to both the input pipe (13) and the output pipe (14).

5. The shaft-biased shape memory alloy thermomechanical system according to claim 4, characterized in that, The circulating water module (5) includes a temperature control unit, and the shaft bias memory alloy thermoelectric generator also includes a detection module (6). The detection module (6) includes a laser tachometer (61) and a data integration and control unit (62). The laser tachometer (61) is connected to the rotor (2) and is used to detect the rotational speed of the rotor (2). The laser tachometer (61) and the temperature control unit are both communicatively connected to the data integration and control unit (62).

6. The shaft-biased shape memory alloy thermomechanical system according to any one of claims 1-3, characterized in that, The shaft bias memory alloy thermoelectric engine also includes an output module (7), which includes a pulley (71) and a generator (72). The rotor (2) is connected to the generator (72) through the pulley (71).

Images