Integrated Lubrication and Heat Dissipation Casing for Shape Memory Alloy Heat Engine Crank Drive Mechanism

Abstract

This utility model discloses an integrated lubrication and heat dissipation casing for a shape memory alloy thermoelectric crankshaft transmission mechanism, comprising a casing body, two crank bearings, and a crankshaft. The two crank bearings are respectively installed on the left and right sides of the casing body, and the crankshaft is installed inside the casing body with its two ends respectively mounted on the two crank bearings. In this utility model, the lubrication system adopts a zoned precise oil injection method. Through an oil circuit network constructed by the main oil pipe and branch pipes, combined with the cooperation of the oil pump and nozzle, it ensures that the lubricating oil can be efficiently and evenly delivered to the oil injection holes of the crank bearings, significantly reducing the coefficient of friction and the risk of wear. Simultaneously, the heat dissipation system achieves efficient circulating heat dissipation of the crankshaft through the synergistic effect of the cooling box, semiconductor cooling fins, and spiral heat dissipation pipes. The external design of the metal heat sink further enhances the heat dissipation performance, while the arrangement of dust filters and partitions ensures the long-term stable operation of the heat dissipation system.

Description

Technical Field

[0001] This utility model relates to the field of shape memory alloy heat engine technology, and more specifically, to an integrated lubrication and heat dissipation casing for a crank transmission mechanism of a shape memory alloy heat engine. Background Technology

[0002] Shape memory alloy heat engines, as a novel type of heat energy conversion device, have long faced severe challenges in lubrication and heat dissipation in their core transmission mechanisms. Traditional crank transmission mechanisms typically employ separate lubrication systems and cooling devices, a design with significant structural defects.

[0003] First, the complex piping layout not only increases the size of the equipment, but also reduces the reliability of the system;

[0004] Secondly, conventional splash lubrication methods cannot guarantee a continuous and stable oil supply to high-speed bearings, especially when the shape memory alloy phase transformation generates periodic impact loads, which can easily lead to insufficient lubrication and abnormal bearing wear.

[0005] Furthermore, existing heat dissipation solutions mostly employ external forced air cooling or simple liquid cooling, which cannot effectively address the localized high-temperature hotspots generated by shape memory alloys during thermal cycling, leading to problems such as rapid deterioration of lubricating oil and aging of seals. More seriously, under high-temperature operating conditions, the viscosity characteristics of traditional lubricating oil deteriorate sharply, further exacerbating frictional losses in the transmission system. Utility Model Content

[0006] In view of the problems existing in the prior art, the purpose of this utility model is to provide an integrated lubrication and heat dissipation casing for a shape memory alloy thermoelectric crank transmission mechanism, so as to solve the problems in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution;

[0008] A lubrication and heat dissipation integrated casing for a shape memory alloy thermoelectric crank transmission mechanism includes a casing body, two crank bearings and a crank spindle. The two crank bearings are respectively installed on the left and right sides of the casing body. The crank spindle is installed inside the casing body and its two ends are respectively installed on the two crank bearings. The casing body is equipped with a lubrication system and a heat dissipation system.

[0009] The lubrication system includes a main oil passage pipe, which is installed inside the main body of the casing and connected to an external oil pipe. Two branch pipes are installed on the main oil passage pipe. Two oil filling boxes are fixedly installed on the inner wall of the main body of the casing. An oil pump is fixedly installed on the inner wall of the oil filling box. A nozzle is installed on the inner wall of the oil filling box. The oil pump is connected to the nozzle. An oil filling hole is opened on the outer side of the crank bearing. The nozzle is correspondingly arranged with the oil filling hole.

[0010] The heat dissipation system includes a cooling box, which is fixedly installed on the inner wall of the main body of the casing. A semiconductor cooling chip is fixedly installed at the bottom of the cooling box, and the bottom end of the semiconductor cooling chip extends through and to the bottom of the main body of the casing. A liquid pump is fixedly installed on the cooling box, and a heat dissipation pipe is fixedly installed on the liquid pump. The other end of the heat dissipation pipe is wound around the crankshaft and connected to the side of the cooling box away from the liquid pump.

[0011] As a further description of the above technical solution: a partition is fixedly installed on the inner wall of the refrigeration box, and the semiconductor refrigeration chip is located on the right side of the partition.

[0012] As a further description of the above technical solution: the portion of the heat dissipation pipe that wraps around the main shaft is in a spiral state.

[0013] As a further description of the above technical solution: a dustproof net is fixedly installed at the bottom of the main body of the casing, and the dustproof net is located at the bottom of the semiconductor cooling chip.

[0014] As a further description of the above technical solution: a low-temperature tube is fixedly installed on the distribution pipe, the other end of the low-temperature tube passes through the refrigeration box and is connected to the end of the distribution pipe near the oil filling box, an electrically controlled valve one is fixedly installed on the distribution pipe, and two electrically controlled valves two are fixedly installed on the low-temperature tube.

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] In this invention, the lubrication system adopts a zoned precision oil injection method. Through the oil circuit network constructed by the main oil circuit pipe and the branch pipe, combined with the cooperation of the oil pump and the nozzle, it is ensured that the lubricating oil can be efficiently and evenly delivered to the oil injection hole of the crank bearing, which significantly reduces the coefficient of friction and the risk of wear.

[0017] Meanwhile, the cooling system achieves efficient circulating heat dissipation of the crankshaft through the synergistic effect of the cooling box, semiconductor cooling chip and spiral heat pipe. The external design of the metal heat sink further enhances the heat dissipation performance, while the arrangement of dust screen and partition ensures the long-term stable operation of the cooling system.

[0018] The specially designed low-temperature lubrication mode, through intelligent switching of the electronically controlled valve, allows the lubricating oil to selectively flow through the refrigeration box for pre-cooling, effectively solving the problem of lubricating oil performance degradation under high-temperature conditions. This deep integration of lubrication and heat dissipation functions not only optimizes the overall structural layout and reduces external pipeline connections, improving system reliability, but also intelligently adjusts the working mode according to operating conditions, ensuring that the shape memory alloy thermoelectric engine maintains optimal performance under various working environments, while greatly extending the service life of key moving parts. Attached Figure Description

[0019] Figure 1This is a three-dimensional structural diagram of the main body of the casing of this utility model;

[0020] Figure 2 This is a frontal cross-sectional view of the present invention.

[0021] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 This is a schematic diagram of the oil injection system of this utility model.

[0023] Explanation of the labels in the diagram:

[0024] 1. Casing body; 2. Crank bearing; 201. Oil filling hole; 3. Crank spindle; 4. Lubrication system; 401. Main oil passage pipe; 402. Diverter pipe; 403. Oil filling box; 404. Oil pump; 405. Nozzle; 5. Cooling system; 501. Refrigeration box; 502. Semiconductor cooling chip; 503. Liquid pump; 504. Heat dissipation pipe; 6. Partition plate; 7. Electrically controlled valve II; 8. Dustproof screen; 9. Cryogenic pipe; 10. Electrically controlled valve I. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] This solution addresses the lubrication issues of the bearings within the crankshaft housing and the heat dissipation issues of the shape memory alloy thermoelectric crank transmission mechanism, proposing Example 1:

[0027] Please see Figures 1-4 In this utility model, the integrated lubrication and heat dissipation casing of the shape memory alloy thermoelectric crank transmission mechanism includes a casing body 1, two crank bearings 2 and a crank spindle 3. The two crank bearings 2 are respectively installed on the left and right sides of the casing body 1. The crank spindle 3 is installed inside the casing body 1 and its two ends are respectively installed on the two crank bearings 2. The casing body 1 is provided with a lubrication system 4 and a heat dissipation system 5. The lubrication system 4 includes a main oil passage pipe 401, which is installed inside the casing body 1 and connected to an external oil pipe. Two branch pipes 402 are installed on the main oil passage pipe 401. Two oil filling boxes 403 are fixedly installed on the inner wall of the casing body 1. An oil pump 404 is fixedly installed on the inner wall of the oil filling box 403. A nozzle 405 is installed on the inner wall of the oil filling box 403. The oil pump 404 is connected to the nozzle 405. An oil filling hole 201 is opened on the outer side of the crank bearing 2. The nozzle 405 is correspondingly arranged with the oil filling hole 201.

[0028] The heat dissipation system 5 includes a cooling box 501, which is fixedly installed on the inner wall of the main body 1. A semiconductor cooling chip 502 is fixedly installed at the bottom of the cooling box 501. The bottom end of the semiconductor cooling chip 502 extends through and to the bottom of the main body 1. A liquid pump 503 is fixedly installed on the cooling box 501. A heat dissipation pipe 504 is fixedly installed on the liquid pump 503. The other end of the heat dissipation pipe 504 is wound around the crank shaft 3 and connected to the side of the cooling box 501 away from the liquid pump 503. The part of the heat dissipation pipe 504 wound around the shaft is in a spiral state.

[0029] In this utility model, when the shape memory alloy thermoelectric crank transmission mechanism is running, the crank main shaft 3 rotates at high speed under the support of the crank bearing 2. The internal lubrication system 4 of the casing body 1 starts working first. The external pump delivers lubricating oil through the main oil pipe 401, and distributes it to the oil injection boxes 403 on both sides through the diversion pipe 402. After the oil pump 404 pressurizes the oil, it accurately sprays the lubricating oil into the oil injection hole 201 of the crank bearing 2 through the nozzle 405 to form a stable oil film to reduce friction loss.

[0030] At the same time, the heat dissipation system 5 operates synchronously. The liquid pump 503 pumps the coolant in the cooling box 501 into the spiral heat dissipation pipe 504. The coolant absorbs the heat generated by the operation of the crankshaft 3 and then flows back to the cooling box 501. The semiconductor cooling chip 502 cools the high-temperature coolant that flows back.

[0031] Please see Figure 2 and 3 In this case, a partition 6 is fixedly installed on the inner wall of the refrigeration box 501, and the semiconductor refrigeration chip 502 is located on the right side of the partition 6.

[0032] In this invention, the partition 6 is located inside the refrigeration box 501, thereby forming a refrigeration zone and a reflux zone, which improves the cooling efficiency.

[0033] Please see Figure 2 The bottom of the main body 1 of the casing is fixedly equipped with a dustproof net 8, which is located at the bottom of the semiconductor cooling chip 502.

[0034] In this invention, the dustproof mesh 8 effectively prevents dust from clogging the heat dissipation surface of the semiconductor cooling chip 502, thereby maintaining the high-efficiency operation of the semiconductor cooling chip 502.

[0035] Based on the above embodiment one, in order to solve the problem of high lubricating oil temperature when injecting oil into the bearing, embodiment two is proposed:

[0036] Please see Figures 2-4Among them: a low-temperature pipe 9 is fixedly installed on the distributor pipe 402, the other end of the low-temperature pipe 9 passes through the refrigeration box 501 and is connected to the end of the distributor pipe 402 near the oil filling box 403, an electric control valve 10 is fixedly installed on the distributor pipe 402, and two electric control valves 7 are fixedly installed on the low-temperature pipe 9.

[0037] In this invention, when the lubricating oil temperature is detected to be too high, the system can automatically switch to low-temperature lubrication mode. At this time, the first control valve 10 is closed and the second control valve 7 is opened. The lubricating oil is diverted to flow through the low-temperature chamber of the refrigeration box 501. After being rapidly cooled by the semiconductor cooling chip 502, it enters the oil injection box 403 through the diversion pipe 402, thereby providing low-temperature lubricating oil for the crank bearing 2. This dual-mode lubrication system 4 can meet the needs of normal working conditions and effectively control the bearing temperature in high-temperature environments, ensuring the stable and reliable operation of the shape memory alloy thermoelectric engine under wide temperature range and high load conditions.

[0038] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A lubrication and heat dissipation integrated casing for a shape memory alloy thermoelectric crank transmission mechanism, comprising a casing body (1), two crank bearings (2) and a crank spindle (3), wherein the two crank bearings (2) are respectively installed on the left and right sides of the casing body (1), and the crank spindle (3) is installed inside the casing body (1) with its two ends respectively installed on the two crank bearings (2), characterized in that: The casing body (1) is equipped with a lubrication system (4) and a heat dissipation system (5). The lubrication system (4) includes a main oil pipe (401), which is installed inside the casing body (1) and connected to an external oil pipe. Two branch pipes (402) are installed on the main oil pipe (401). Two oil filling boxes (403) are fixedly installed on the inner wall of the casing body (1). An oil pump (404) is fixedly installed on the inner wall of the oil filling box (403). A nozzle (405) is installed on the inner wall of the oil filling box (403). The oil pump (404) is connected to the nozzle (405). An oil filling hole (201) is opened on the outer side of the crank bearing (2). The nozzle (405) is correspondingly arranged with the oil filling hole (201). The heat dissipation system (5) includes a cooling box (501), which is fixedly installed on the inner wall of the casing body (1). A semiconductor cooling chip (502) is fixedly installed at the bottom of the cooling box (501). The bottom end of the semiconductor cooling chip (502) extends through and to the bottom of the casing body (1). A liquid pump (503) is fixedly installed on the cooling box (501). A heat dissipation pipe (504) is fixedly installed on the liquid pump (503). The other end of the heat dissipation pipe (504) is wound around the crank spindle (3) and connected to the side of the cooling box (501) away from the liquid pump (503).

2. The lubrication and heat dissipation integrated mechanism case of the shape memory alloy heat engine crank drive mechanism according to claim 1, characterized in that: A partition (6) is fixedly installed on the inner wall of the refrigeration box (501), and the semiconductor refrigeration chip (502) is located on the right side of the partition (6).

3. The lubrication and heat dissipation integrated mechanism case of the shape memory alloy heat engine crank drive mechanism according to claim 1, characterized in that: The heat dissipation pipe (504) is spirally wound around the main shaft.

4. The lubrication and heat dissipation integrated mechanism case of the shape memory alloy heat engine crank drive mechanism according to claim 1, characterized in that: A dustproof net (8) is fixedly installed at the bottom of the main body (1) of the casing, and the dustproof net (8) is located at the bottom of the semiconductor cooling chip (502).

5. The lubrication and heat dissipation integrated mechanism case of the shape memory alloy heat engine crank drive mechanism according to claim 1, characterized in that: A low-temperature tube (9) is fixedly installed on the diversion pipe (402). The other end of the low-temperature tube (9) passes through the refrigeration box (501) and is connected to the end of the diversion pipe (402) near the oil filling box (403). An electric control valve (10) is fixedly installed on the diversion pipe (402), and two electric control valves (7) are fixedly installed on the low-temperature tube (9).

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