Generator driven by Scotch yoke internal combustion engine

Abstract

The invention belongs to the technical field of small power generation equipment, and particularly relates to a generator driven by a Scotch yoke internal combustion engine, which comprises a Scotch yoke internal combustion engine and a power generation device, and the Scotch yoke internal combustion engine is linked with a second connecting rod structure through a first connecting rod structure of a single-cylinder engine to drive a permanent magnet part to reciprocate in an electromagnetic coil; different from the mode that an existing storage battery adopts a battery cell capable of being charged and discharged circularly to store electricity, the generator driven by fuel gas in the Scotch yoke can generate electricity on site and output electric power, the requirement for long-time use can be met by using fuel oil energy, and the service life of the generator is prolonged. The generator driven by the gas in the Scotch yoke is small in overall size, relatively light in weight, convenient to carry due to the integrated structure, free of calibration and debugging during use and free of exposed rotating parts, and solves the problem that a storage battery is difficult to meet the use requirements of long-time power supply, portability and portability.

Description

Technical Field

[0001] This application belongs to the technical field of small power generation equipment, and particularly relates to a generator driven by a Scotch yoke internal combustion engine. Background Art

[0002] With the improvement of people's living standards, outdoor camping has gradually emerged, and outdoor camping equipment has been continuously developed and enriched. During outdoor camping, people need to use various electrical appliances, such as electric lights, induction cookers, audio-visual equipment, etc. Therefore, sufficient power supply is essential, and outdoor camping enthusiasts will carry camping batteries to provide power.

[0003] Currently, camping batteries generally use lithium battery cores to store electricity. This results in a very limited power storage capacity for small batteries, and they cannot provide power for a long time. While batteries with a large power storage capacity are large in volume and heavy in weight, making them inconvenient to carry. It can be seen that the current camping batteries are difficult to meet the usage requirements of outdoor camping enthusiasts for long-term power supply and being light and convenient to carry. Summary of the Invention

[0004] The purpose of this application is to provide a generator driven by a Scotch yoke internal combustion engine, aiming to solve the problem that the battery is difficult to meet the usage requirements of long-term power supply and being light and convenient to carry.

[0005] To achieve the above purpose, the technical solution adopted in this application is: A generator driven by a Scotch yoke internal combustion engine, comprising:

[0006] A Scotch yoke internal combustion engine, including a crankshaft housing, a cylinder block, a crankshaft, a first connecting rod structure, a second connecting rod structure, a slider structure, and a piston. The cylinder block is fixedly installed at one end of the crankshaft housing. The cylinder block is provided with a cylinder chamber, and the cylinder chamber communicates with the crankshaft housing. The crankshaft is provided with a first main journal, a connecting rod journal, and a second main journal that are connected in sequence. The first main journal and the second main journal can be rotatably installed in the crankshaft housing, and the connecting rod journal is located inside the crankshaft housing. One end of the first connecting rod structure and one end of the second connecting rod structure are assembled to form a connecting frame body. The connecting frame body is provided with a sliding straight groove, and the slider structure is installed in the sliding straight groove. The connecting rod journal is rotatably connected to the slider structure. The other end of the first connecting rod structure is set as a piston connecting part, and the piston connecting part extends into the cylinder chamber. The piston is installed in the cylinder chamber, and the piston connecting part is connected to the piston. The piston reciprocates in the cylinder chamber;

[0007] A power generation device, including a box shell, an electromagnetic coil, and a permanent magnet part. The box shell is fixedly connected to the other end of the crankshaft housing and communicates with the crankshaft housing. The electromagnetic coil is installed inside the box shell, and the permanent magnet part is installed at the other end of the second connecting rod structure and passes through the electromagnetic coil. The second connecting rod structure drives the permanent magnet part to reciprocate inside the electromagnetic coil, so that the permanent magnet part and the electromagnetic coil move relative to each other to cut the magnetic induction lines to generate electric energy and output it.

[0008] In some embodiments of the present application, the housing is provided with a winding cylinder, the electromagnetic coil is wound around the outer wall of the winding cylinder around the axis of the winding cylinder, the electromagnetic coil is insulated from the winding cylinder, and the permanent magnet part extends into the winding cylinder.

[0009] In some embodiments of the present application, one of a guiding straight rib and a guiding straight groove is provided on the inner wall of the winding cylinder, and the other of the guiding straight rib and the guiding straight groove is provided on the outer wall of the permanent magnet part. The extending directions of the guiding straight rib and the guiding straight groove are the same as the axial direction of the winding cylinder, and the guiding straight rib is slidably arranged in the guiding straight groove.

[0010] In some embodiments of the present application, the winding cylinder is a component made of an insulating material.

[0011] In some embodiments of the present application, the extending axis of the first link structure and the extending axis of the second link structure are on the same straight line, and the extending direction of this straight line is perpendicular to the extending direction of the sliding straight groove.

[0012] In some embodiments of the present application, a guide rail is provided on the groove wall of the sliding straight groove, and a guide groove adapted to the guide rail is provided on the slider structure.

[0013] In some embodiments of the present application, the crankshaft is further provided with two balance weights, the two balance weights are respectively connected to two connecting crank positions between the first main journal and the connecting rod journal and between the second main journal and the connecting rod journal, and the two balance weights and the connecting rod journal are respectively located on both sides of the central axis of the crankshaft.

[0014] In some embodiments of the present application, the Scotch yoke internal combustion engine further includes a flywheel. One of the ends of the first main journal and the end of the second main journal is installed with a flywheel. The flywheel rotates synchronously with the crankshaft, and the flywheel is located inside the crankcase. The other of the ends of the first main journal and the end of the second main journal extends to the outside of the crankcase and is set as a starting end.

[0015] In some embodiments of the present application, the piston has a bottom dead center close to the crankshaft and a top dead center far from the crankshaft in the cylinder chamber. The piston reciprocates once between the top dead center and the bottom dead center to complete a working cycle.

[0016] In some embodiments of the present application, the crankcase is provided with a plurality of supporting feet for stable support.

[0017] The present application has at least the following beneficial effects:

[0018] In the generator driven by a Scotch yoke internal combustion engine provided in the present application, the Scotch yoke internal combustion engine is mainly formed by assembling a crankcase, a cylinder block, a crankshaft, a first connecting rod structure, a second connecting rod structure, a slider structure and a piston. Among them, the connecting frame body formed by assembling one end of the first connecting rod structure and one end of the second connecting rod structure and the slider structure constitute the yoke structure in the Scotch yoke internal combustion engine. When the air-fuel mixture burns in the cylinder chamber, it does work on the piston, and the first main journal and the second main journal of the crankshaft are rotatably installed in the crankcase, and the connecting rod journal and the slider structure are rotatably installed, so that the piston reciprocates in the cylinder chamber. Then, the first connecting rod structure and the second connecting rod structure realize linkage movement through the movement cooperation of the yoke structure and the crankshaft. Then, the second connecting rod structure drives the permanent magnet part to reciprocate to cut the magnetic induction line to generate electric energy and output it, that is, generate electricity on-site and output electricity on-site. Compared with the existing method of using a rechargeable battery core for energy storage, this generator driven by a Scotch yoke internal combustion engine can generate electricity on-site and output electricity. When in use, there is no need for calibration and debugging, and the use of fuel energy can meet the long-term power consumption requirements of outdoor camping enthusiasts. Moreover, the Scotch yoke internal combustion engine of this generator driven by a Scotch yoke internal combustion engine adopts a single-cylinder design method. Through the yoke structure, the second connecting rod structure linked with the first connecting rod structure drives the permanent magnet part to reciprocate relative to the electromagnetic coil to cut the magnetic induction line to generate electric energy and output it. Therefore, the overall design volume of this Scotch yoke internal combustion engine can be designed to be small, which also makes the overall volume of this generator small. This generator is overall light, has an integrated structure, and has no exposed rotating parts, which is convenient to carry. In this way, the generator driven by a Scotch yoke internal combustion engine of the present application not only provides convenience for outdoor camping enthusiasts, but also serves as a temporary power supply system, temporary construction power supply, and temporary charging station for unmanned equipment (such as drones) in remote areas without power grids for outdoor camping enthusiasts or outdoor workers, improving the usage experience. Moreover, it can also provide emergency power supply for disaster relief and emergency power supply for disaster inspection. It can be seen that this generator driven by a Scotch yoke internal combustion engine has a wide range of applicable scenarios and excellent application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a three-dimensional schematic diagram of the generator driven by a Scotch yoke internal combustion engine according to an embodiment of the present application;

[0021] Figure 2 is Figure 1Front elevation schematic view of a generator driven by a Scotch yoke internal combustion engine as shown;

[0022] Figure 3 is Figure 2 Top plan schematic view of a generator driven by a Scotch yoke internal combustion engine as shown;

[0023] Figure 4 is Figure 3 Cross-sectional schematic view in the direction of A-A in Figure 1 , where the crankshaft is removed;

[0024] Figure 5 is Figure 3 Cross-sectional schematic view in the direction of A-A in Figure 2 , where the crankshaft is removed;

[0025] Figure 6 is Figure 5 Enlarged schematic view at B in

[0026] Figure 7 Assembly structure schematic view of the first connecting rod structure, the second connecting rod structure, the cylinder block and the slider structure in the Scotch yoke internal combustion engine of the generator driven by the Scotch yoke internal combustion engine according to the embodiment of the present application;

[0027] Figure 8 Front elevation schematic view of the crankshaft of the Scotch yoke internal combustion engine of the generator driven by the Scotch yoke internal combustion engine according to the embodiment of the present application;

[0028] Figure 9 Assembly structure schematic view of the crankshaft and the flywheel of the Scotch yoke internal combustion engine of the generator driven by the Scotch yoke internal combustion engine according to the embodiment of the present application.

[0029] Among them, the reference numerals in the figure are:

[0030] 10. Scotch yoke internal combustion engine; 11. Crankshaft housing; 12. Cylinder block; 121. Cylinder chamber; 122. Top dead center; 123. Bottom dead center; 13. Crankshaft; 131. First main journal; 132. Connecting rod journal; 133. Second main journal; 134. Balance weight; 135. Central axis; 136. Starting end; 14. First connecting rod structure; 141. Piston connecting part; 15. Second connecting rod structure; 16. Connecting frame; 161. Sliding straight groove; 162. Guide rail; 17. Piston;

[0031] 20. Power generation device; 21. Housing; 211. Winding cylinder; 22. Electromagnetic coil; 23. Permanent magnet part; 231. Pin shaft; 24. Guide straight rib; 25. Guide straight groove;

[0032] 30. Slider structure;

[0033] 40. Flywheel;

[0034] 50. Support feet

[0035] 63. Cylinder head; 631. Intake passage; 632. Exhaust passage Detailed implementation manners

[0036] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and should not be construed as a limitation to the present application

[0037] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application

[0038] In addition, the terms "first", "second", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined

[0039] In the present application, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances

[0040] As Figures 1 to 9 shown, the generator driven by a scotch yoke internal combustion engine provided in the embodiment of the present application includes a scotch yoke internal combustion engine 10 and a power generation device 20. Specifically, the scotch yoke internal combustion engine 10 includes a crankcase 11, a cylinder block 12, a crankshaft 13, a first connecting rod structure 14, a second connecting rod structure 15, a slider structure 30, and a piston 17. The cylinder block 12 is fixedly installed at one end of the crankcase 11. The cylinder block 12 is provided with a cylinder chamber 121, and the cylinder chamber 121 communicates with the crankcase 11. As Figure 8 andFigure 9 As shown, the crankshaft 13 is provided with a first main journal 131, a connecting rod journal 132 and a second main journal 133 connected in sequence. As Figures 1 to 9 shown, both the first main journal 131 and the second main journal 133 can be rotatably installed on the crankshaft housing 11, the connecting rod journal 132 is located inside the crankshaft housing 11, one end of the first connecting rod structure 14 and one end of the second connecting rod structure 15 are assembled to form a connecting frame 16, the connecting frame 16 is provided with a sliding straight groove 161, the slider structure 30 is installed in the sliding straight groove 161, the connecting rod journal 132 is rotatably connected to the slider structure 30, the other end of the first connecting rod structure 14 is set as a piston connecting part 141, the piston connecting part 141 extends into the cylinder chamber 121, the piston 17 is installed in the cylinder chamber 121, the piston connecting part 141 is connected to the piston 17, and the piston 17 reciprocates in the cylinder chamber 121. As Figures 1 to 5 , Figure 7 shown, the power generation device 20 includes a box shell 21, an electromagnetic coil 22 and a permanent magnet part 23. The box shell 21 is fixedly connected to the other end of the crankshaft housing 11 and communicates with the crankshaft housing 11. The electromagnetic coil 22 is installed in the box shell 21, the permanent magnet part 23 is installed at the other end of the second connecting rod structure 15 and passes through the electromagnetic coil 22. The second connecting rod structure 15 drives the permanent magnet part 23 to reciprocate in the electromagnetic coil 22, so that the permanent magnet part 23 and the electromagnetic coil 22 move relative to each other to cut magnetic induction lines to generate electric energy and output it.

[0041] In the generator driven by a Scotch yoke internal combustion engine provided in this application, the Scotch yoke internal combustion engine 10 is mainly assembled and formed by a crankshaft housing 11, a cylinder block 12, a crankshaft 13, a first connecting rod structure 14, a second connecting rod structure 15, a slider structure 30, and a piston 17. Among them, a connecting frame body 16 formed by assembling one end of the first connecting rod structure 14 and one end of the second connecting rod structure 15 and the slider structure 30 constitute the yoke structure in the Scotch yoke internal combustion engine 10, so that there are no exposed rotating parts in the whole generator. When the air-fuel mixture burns in the cylinder chamber 121, it does work on the piston 17, and the first main journal 131 and the second main journal 133 of the crankshaft 13 are rotatably installed in the crankshaft housing 11, and the connecting rod journal 132 and the slider structure 30 are rotatably installed, so that the piston 17 reciprocates in the cylinder chamber 121. Then, the first connecting rod structure 14 and the second connecting rod structure 15 realize linkage movement through the movement cooperation of the yoke structure and the crankshaft 13. Then, the second connecting rod structure 15 drives the permanent magnet part 23 to reciprocate to cut the magnetic induction line to generate electric energy and output it, that is, generate electricity on-site and output electricity on-site. Compared with the existing method of storing electricity using a rechargeable battery core that can be charged and discharged cyclically, the generator driven by the Scotch yoke internal combustion engine can generate electricity on-site and output electricity, and does not require calibration and debugging during use, and using fuel energy can meet the long-term power consumption requirements of outdoor camping enthusiasts. Moreover, the Scotch yoke internal combustion engine 10 of the generator driven by the Scotch yoke internal combustion engine adopts a single-cylinder design method. Through the yoke structure, the second connecting rod structure 15 linked with the first connecting rod structure 14 drives the permanent magnet part 23 to reciprocate relative to the electromagnetic coil 22 to cut the magnetic induction line to generate electric energy and output it. Therefore, the overall design volume of the Scotch yoke internal combustion engine 10 can be designed to be small, which also makes the overall volume of the generator small. The whole generator is light, has an integrated structure, and has no exposed rotating parts, which is convenient to carry. In this way, the generator driven by the Scotch yoke internal combustion engine of this application can not only provide convenience for outdoor camping enthusiasts, but also be used as a temporary power supply system, temporary construction power supply, and temporary charging station for unmanned equipment (such as drones) for outdoor camping enthusiasts or outdoor workers in remote areas without power grids, improving the user experience. Moreover, it can also be used for emergency power supply for disaster relief and emergency power supply for disaster inspection. It can be seen that the generator driven by the Scotch yoke internal combustion engine has a wide range of applicable scenarios and excellent application prospects.

[0042] Among them, in the Scotch yoke internal combustion engine 10, the yoke structure is a key component for realizing the conversion between rotational motion and reciprocating linear motion. The yoke structure is generally composed of a frame (connecting frame 16) and a slider (slider structure 30). The connecting frame 16 is provided with a sliding groove (sliding straight groove 161) extending along a specific direction. The slider structure 30 can slide back and forth in the sliding straight groove 161, and the connecting rod journal 132 of the crankshaft 13 is rotatably connected to the slider structure 30. The yoke structure is compact in design and can effectively utilize the accommodation space of the crankcase 11, improve space utilization, and is suitable for realizing complex motion conversion in a limited space. Moreover, since the motion conversion process is simple and direct, the yoke structure can efficiently convert rotational motion into linear motion, or efficiently convert linear motion into rotational motion, thereby significantly reducing the overall volume of the generator of the present application. In the embodiment of the present application, the yoke structure cooperates with the connecting rod journal 132 of the crankshaft 13, so that the first connecting rod structure 14 and the piston 17 can continuously reciprocate in the cylinder chamber 121, and drive the second connecting rod structure 15 to move to output power. That is, the linear motion work of the piston 17 and the first connecting rod structure 14 is converted into the rotational energy storage of the crankshaft 13, and the linear motion work of the first connecting rod structure 14 also drives the second connecting rod structure 15 to move in conjunction. Then, the rotational energy stored in the crankshaft 13 is released to push the first connecting rod structure 14 and the piston 17 to complete the intake, compression and exhaust processes in the cylinder chamber 121, and the release of the rotational energy stored in the crankshaft 13 also drives the second connecting rod structure 15 to move and reset. Therefore, in the Scotch yoke internal combustion engine 10 of the generator, the crankshaft 13 plays an auxiliary function of storing energy and releasing energy to assist the first connecting rod structure 14, the piston 17 and the second connecting rod structure 15 to complete the reciprocating motion, and the crankshaft 13 is not responsible for outputting power.

[0043] In the power generation device 20 of the Scotch yoke internal combustion engine driven generator, as Figures 4 to 6 As shown, the housing 21 is provided with a bobbin 211, the electromagnetic coil 22 is wound around the axis of the bobbin 211 and is wound around the outer wall of the bobbin 211, the permanent magnet portion 23 extends into the bobbin 211, and the second connecting rod structure 15 drives the permanent magnet portion 23 to reciprocate in the bobbin 211, so that the permanent magnet portion 23 and the electromagnetic coil 22 cut the magnetic flux lines, and the electromagnetic coil 22 generates electrical energy and outputs it. When the electromagnetic coil 22 generates current due to cutting the magnetic flux lines and has its own magnetic field and electric field, because the electromagnetic coil 22 is wound around the axis of the bobbin 211 and is wound around the outer wall of the bobbin 211, the interaction between the magnetic field of the electromagnetic coil 22 itself and the permanent magnetic field of the permanent magnet portion 23 is suppressed, so that the electromagnetic coil 22 can remain stable in the housing 21, thereby ensuring that the electromagnetic coil 22 and the permanent magnet portion 23 always stably cut the magnetic flux lines to generate stable electrical energy and output it.

[0044] Moreover, the electromagnetic coil 22 is insulated from the winding cylinder 211, and there is a gap between the electromagnetic coil 22 and the metal material part of the case 21, that is, the electromagnetic coil 22 and the metal material part of the case 21 are insulated by an air gap. The electric energy generated by the electromagnetic coil 22 cutting the magnetic induction line will not leak to the winding cylinder 211. In this way, it is possible to prevent the case 21, the crankshaft case 11 and the cylinder block 12 of the generator driven by the Scottish yoke internal combustion engine from being electrified, that is, the overall outer shell of the generator is not electrified, preventing outdoor camping enthusiasts from getting an electric shock when using the generator and ensuring the safety of electricity use.

[0045] Preferably, the winding cylinder 211 is a component made of an insulating material. On the one hand, the insulating winding cylinder 211 ensures that the current generated by the electromagnetic coil 22 cutting the magnetic induction line will not leak to the metal material part of the case 21. On the other hand, during the process of the permanent magnet part 23 and the electromagnetic coil 22 reciprocating relative to each other to cut the magnetic induction line to generate electric energy, it is possible to avoid the winding cylinder 211 generating an eddy current effect and heating up to affect the permanent magnetic field of the permanent magnet part 23, thereby improving the power generation efficiency. In some embodiments of the present application, the insulating material used for the winding cylinder 211 includes but is not limited to ceramic materials, phenolic plastics (commonly known as bakelite), etc., which have the characteristics of high temperature resistance and high strength.

[0046] In some embodiments of the present application, as Figure 4 shown, the shape profile of the permanent magnet part 23 is adapted to the through-hole profile of the winding cylinder 211, and the outer wall of the permanent magnet part 23 and the hole wall of the winding cylinder 211 are in clearance fit or transition fit. In this way, the permanent magnet part 23 is driven by the second link structure 15 to slide in the winding cylinder 211. Just by applying lubricating grease or maintaining an oil film between the outer wall of the permanent magnet part 23 and the hole wall of the winding cylinder 211, the lubrication effect between the permanent magnet part 23 and the winding cylinder 21 is ensured, so that the permanent magnet part 23 can reciprocate smoothly and stably in the winding cylinder 211.

[0047] In some embodiments of the present application, the end of the second link structure 15 is fixedly connected to the permanent magnet part 23. In this embodiment, the outer wall of the permanent magnet part 23 and the hole wall of the winding cylinder 211 are in clearance fit, and the permanent magnet part 23 is kept suspended in the winding cylinder 211, that is, the permanent magnet part 23 and the winding cylinder 211 always remain non-contact.

[0048] In some other embodiments of the present application, the end of the second link structure 15 is rotatably connected to the permanent magnet part 23 through a pin shaft 231. In this embodiment, the outer wall of the permanent magnet part 23 and the hole wall of the winding cylinder 211 can be either clearance-fitted or transition-fitted. During the process that the second link structure 15 drives the permanent magnet part 23 to reciprocate in the winding cylinder 211 following the linkage of the first link structure 14, when the Scotch yoke internal combustion engine 10 burns the air-fuel mixture to generate power, vibration is inevitably generated. Since the end of the second link structure 15 and the permanent magnet part 23 can rotate relative to each other through the pin shaft 231, the amount of vibration transmitted from the second link structure 15 to the permanent magnet part 23 can be reduced, thereby reducing or even avoiding the situation that the permanent magnet part 23 rigidly knocks against the hole wall of the winding cylinder 211, effectively protecting the permanent magnet part 23 and the winding cylinder 211, and at the same time reducing the generation of noise.

[0049] In order to further enable the permanent magnet part 23 to always reciprocate smoothly and stably in the winding cylinder 211, therefore, one of the guide straight ribs 24 and the guide straight grooves 25 is provided on the inner wall of the winding cylinder 211, and the other of the guide straight ribs 24 and the guide straight grooves 25 is provided on the outer wall of the permanent magnet part 23. The extending directions of the guide straight ribs 24 and the guide straight grooves 25 are consistent with the axial direction of the winding cylinder 211, and the guide straight ribs 24 are slidably arranged in the guide straight grooves 25. As Figure 5 and Figure 6 shown, in the embodiment of the present application, the guide straight ribs 24 are provided on the inner wall of the winding cylinder 211, and the guide straight grooves 25 are provided on the outer wall of the permanent magnet part 23. Through the mutual guiding cooperation between the guide straight ribs 24 and the guide straight grooves 25, not only can the reciprocating movement of the permanent magnet part 23 in the winding cylinder 211 be guided, but also to a certain extent, the situation that the permanent magnet part 23 relatively shakes in the winding cylinder 211 due to the vibration transmitted by the second link structure 15 is restricted, improving the smoothness and stability of the reciprocating movement of the permanent magnet part 23 in the winding cylinder 211. Moreover, the guide straight grooves 25 are helpful for coating and retaining grease or lubricating oil, ensuring the lubrication effect of the relative reciprocating movement between the permanent magnet part 23 and the winding cylinder 211.

[0050] In the generator driven by the Scotch yoke internal combustion engine in the embodiment of the present application, as Figure 4 and Figure 5As shown, the extension axis of the first connecting rod structure 14 of the Scotch yoke internal combustion engine 10 and the extension axis of the second connecting rod structure 15 are on the same straight line, and the extension direction of this straight line is perpendicular to the extension direction of the sliding straight groove 161. That is to say, the extension direction of the first connecting rod structure 14 is opposite to the extension direction of the second connecting rod structure 15. In this way, the cylinder block 12, the crankcase 11 and the housing 21 of the generator driven by this Scotch yoke internal combustion engine are arranged in a straight line. The cylinder block 12, the crankcase 11 and the housing 21 can be assembled and fixed by long bolts passing through the three, which simplifies the assembly process and can improve the assembly strength of the cylinder block 12, the crankcase 11 and the housing 21, and the work is reliable.

[0051] In the Scotch yoke internal combustion engine 10 of the generator driven by the Scotch yoke internal combustion engine in the embodiment of the present application, as Figure 7 shown, a guide rail 162 is provided on the groove wall of the sliding straight groove 161, and the slider structure 30 is provided with a guide groove adapted to the guide rail 162. When the slider structure 30 reciprocates in the sliding straight groove 161, the guide rail 162 and the guide groove cooperate to improve the limiting effect of the connecting frame 16 on the slider structure 30, and the cooperation of the guide rail 162 and the guide groove can also reduce the vibration impression caused by friction and assembly clearance and improve the transmission efficiency. Specifically, guide rails 162 are provided on the opposite side walls of the sliding straight groove 161, and guide grooves are provided on the corresponding side walls of the slider structure 30.

[0052] In the Scotch yoke internal combustion engine 10 of the generator driven by the Scotch yoke internal combustion engine in the embodiment of the present application, as Figure 8 and 9As shown, the crankshaft 13 is further provided with two balance weights 134. The two balance weights 134 are respectively connected to two connecting crank positions between the first main journal 131 and the connecting rod journal 132 and between the second main journal 133 and the connecting rod journal 132. Moreover, the two balance weights 134 and the connecting rod journal 132 are respectively located on both sides of the central axis 135 of the crankshaft 13. The main function of the balance weights 134 is to balance the rotational centrifugal force and its torque of the crankshaft 13, and can also balance the reciprocating inertia force and its torque of the first connecting rod structure 14 and the second connecting rod structure 15. And the setting of the two balance weights 134 can reduce the load on the main bearings (i.e., the bearing shells assembled corresponding to the first main journal 131 and the second main journal 133), making the rotation of the crankshaft 13 more stable, and thus making the overall operation of the scotch yoke internal combustion engine 10 more stable. Further, the overall mass of the crankshaft 13 provided with the balance weights 134 increases, so that the crankshaft 13 can store sufficient rotational energy after rotating, and release the rotational energy by itself to drive the first connecting rod structure 14 and the piston 17 to complete the intake, compression and exhaust processes in the cylinder chamber 121. And the release of the rotational energy stored by the crankshaft 13 also drives the second connecting rod structure 15 to move back to its original position. And the oil-gas mixture continuously burns in the cylinder chamber 121 to do work on the piston 17 and the first connecting rod structure 14. In this way, the scotch yoke internal combustion engine 10 and the power generation device 20 always operate continuously and stably, realizing stable power output.

[0053] Further, as Figure 9 shown, the scotch yoke internal combustion engine 10 further includes a flywheel 40. The flywheel 40 is installed at one of the ends of the first main journal 131 and the end of the second main journal 133. The flywheel 40 rotates synchronously with the crankshaft 13, and the flywheel 40 is located inside the crankcase 11 (the whole generator has no exposed rotating parts). The other of the ends of the first main journal 131 and the second main journal 133 extends to the outside of the crankcase 11 and is set as a starting end 136. During the operation of the scotch yoke internal combustion engine 10, the oil-gas mixture burns and does work to push the piston 17 and the first connecting rod structure 14, and is converted into rotational mechanical energy of the synchronous rotation of the crankshaft 13 and the flywheel 40 through the yoke structure. Moreover, the main function of the flywheel 40 is to store a part of the energy during the work process, and release the rotational mechanical energy during other processes (intake, compression and exhaust), and balance the speed fluctuation of the crankshaft 13. By storing more sufficient rotational mechanical energy in the flywheel 40, it is ensured that the first connecting rod structure 14 and the piston 17 can quickly and smoothly complete the intake, compression and exhaust processes, improving the working reliability of the scotch yoke internal combustion engine 10.

[0054] Moreover, the end of the first main journal 131 or the second main journal 133 extending to the outside of the crankshaft housing 11 is set as the starting end 136. The crankshaft 13 is driven manually (handle or pull cord) to rotate, thereby driving the first connecting rod structure 14 and the piston 17 to perform starting compression on the oil-gas mixture, and then igniting or compressing the oil-gas mixture to complete the starting.

[0055] When the ignition method is adopted, the oil-gas mixture is a mixture of gasoline and air, and the Scotch yoke internal combustion engine 10 is correspondingly equipped with a control circuit module, a spark plug, a fuel supply system, a storage battery, etc.; when the compression ignition method is adopted, the oil-gas mixture is a mixture of diesel and air, and the Scotch yoke internal combustion engine 10 is correspondingly equipped with a control circuit module, a fuel supply system, a storage battery, etc.

[0056] In the Scotch yoke internal combustion engine 10 of the generator driven by the Scotch yoke internal combustion engine in the embodiment of the present application, as Figure 4 and Figure 5 shown, the piston 17 has a bottom dead center 123 close to the crankshaft 13 and a top dead center 122 far from the crankshaft 13 in the cylinder chamber 121. The piston 17 reciprocates once between the top dead center 122 and the bottom dead center 123 to complete a working cycle. That is to say, the piston 17 reciprocates between the top dead center 122 and the bottom dead center 123 in the cylinder chamber 121 (the piston 17 moves once between the top dead center 122 and the bottom dead center 123 for one stroke), and converts the thermal energy generated by burning the oil-gas mixture into the linear motion mechanical energy of the piston 17 and the first connecting rod structure 14, and then drives the second connecting rod structure 15 to move, thereby driving the power generation device 20 to operate to output electric energy. The piston 17 reciprocates once between the top dead center 122 and the bottom dead center 123 to complete a working cycle, that is, the piston completes four processes of intake, compression, power generation, and exhaust within two strokes in the cylinder chamber 121 (the connecting rod journal 132 rotates one circle around the central axis 135 of the crankshaft 13). That is to say, the Scotch yoke internal combustion engine 10 is a single-cylinder two-stroke internal combustion engine.

[0057] Of course, in some other embodiments of the present application, the Scotch yoke internal combustion engine 10 can also be a single-cylinder four-stroke internal combustion engine. In a single-cylinder four-stroke internal combustion engine, the piston 17 reciprocates twice between the top dead center 122 and the bottom dead center 123 to complete a working cycle, that is, the piston completes four processes of intake, compression, power generation, and exhaust within four strokes in the cylinder chamber 121 (one stroke corresponds to completing one of the four processes of intake, compression, power generation, and exhaust).

[0058] In the Scotch yoke internal combustion engine 10 of the generator driven by the Scotch yoke internal combustion engine in the embodiment of the present application, as Figures 1 to 5As shown in the figure, a cylinder head 63 is fixedly covered at one end of the cylinder block 12 away from the crankcase 11. The cylinder head 63 is provided with an intake passage 631 and an exhaust passage 632, and both the intake passage 631 and the exhaust passage 632 communicate with the cylinder chamber 121. When the piston 17 performs an intake stroke, the intake passage 631 is opened and the exhaust passage 632 is closed, and then the air-fuel mixture enters the cylinder chamber 121 from the intake passage 631; when the piston 17 performs a compression stroke and a power stroke, both the intake passage 631 and the exhaust passage 632 are closed; when the piston 17 performs an exhaust stroke, the intake passage 631 is closed and the exhaust passage 632 is opened, and then the piston 17 squeezes the waste generated by combustion in the cylinder chamber 121 and discharges it from the exhaust passage 632. In the scotch yoke internal combustion engine 10, valves are assembled in both the intake passage 631 and the exhaust passage 632, and a camshaft assembly for controlling the opening or closing of the valves is assembled on the cylinder head 63. The camshaft assembly is powered by the crankshaft 13 through belt drive, chain drive or gear drive. Moreover, the scotch yoke internal combustion engine 10 is equipped with a cooling system for cooling the cylinder block 12, ensuring that the scotch yoke internal combustion engine 10 can operate normally within an appropriate working temperature range, so as to provide continuous power for the power generation device 20 to generate electricity continuously and output.

[0059] Due to the complex terrain and ground conditions at the outdoor site, generally pitted ground, in order to make the generator driven by the scotch yoke internal combustion engine place stably on the outdoor ground, as Figure 1 、 Figure 2 、 Figure 4 and Figure 5 shown, the crankcase 11 is provided with a plurality of support feet 50 for stable support. Further, each support foot 50 is set to be able to be telescopically adjusted, so that the generator can be adaptively adjusted for different outdoor grounds to maintain stability.

[0060] In the generator driven by the scotch yoke internal combustion engine of the present application, in order to output the electric energy generated by the electromagnetic coil 22 cutting the magnetic induction line with a stable voltage and current for outdoor camping enthusiasts to use, the power generation device 20 further includes an inverter circuit module, a voltage stabilizing module, a voltage transformation module, etc. In this way, the electric energy generated by the electromagnetic coil 22 cutting the magnetic induction line can be output with a stable voltage and current, and multiple voltage outputs can be realized through the voltage transformation module, enabling outdoor camping enthusiasts to select a suitable output voltage according to the voltage requirements of the electrical appliances, such as different output voltages of 12V, 24V, 36V, 48V and 220V, etc.

[0061] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A generator driven by a Scotch yoke internal combustion engine, characterized in that, Comprising: A Scotch yoke internal combustion engine, including a crankshaft housing, a cylinder block, a crankshaft, a first connecting rod structure, a second connecting rod structure, a slider structure and a piston. The cylinder block is fixedly installed at one end of the crankshaft housing. The cylinder block is provided with a cylinder chamber, and the cylinder chamber communicates with the crankshaft housing. The crankshaft is provided with a first main journal, a connecting rod journal and a second main journal connected in sequence. The first main journal and the second main journal are both rotatably installed in the crankshaft housing. The connecting rod journal is located inside the crankshaft housing. One end of the first connecting rod structure and one end of the second connecting rod structure are assembled to form a connecting frame body. The connecting frame body is provided with a sliding straight groove. The slider structure is installed in the sliding straight groove. The connecting rod journal is rotatably connected with the slider structure. The other end of the first connecting rod structure is set as a piston connecting part. The piston connecting part extends into the cylinder chamber. The piston is installed in the cylinder chamber. The piston connecting part is connected with the piston. The piston reciprocates in the cylinder chamber; A power generation device, including a box shell, an electromagnetic coil and a permanent magnet part. The box shell is fixedly connected to the other end of the crankshaft housing and communicates with the crankshaft housing. The electromagnetic coil is installed inside the box shell. The permanent magnet part is installed at the other end of the second connecting rod structure and penetrates through the electromagnetic coil. The second connecting rod structure drives the permanent magnet part to reciprocate in the electromagnetic coil, so that the permanent magnet part and the electromagnetic coil move relative to each other to cut magnetic induction lines to generate electric energy and output.

2. The generator driven by the Scotch yoke internal combustion engine according to claim 1, wherein The box shell is provided with a winding cylinder. The electromagnetic coil is wound around the outer wall of the winding cylinder around the axis of the winding cylinder. Insulation is provided between the electromagnetic coil and the winding cylinder. The permanent magnet part extends into the winding cylinder.

3. The generator driven by the Scotch yoke internal combustion engine according to claim 2, wherein One of a guiding straight rib and a guiding straight groove is provided on the inner wall of the winding cylinder. The other of the guiding straight rib and the guiding straight groove is provided on the outer wall of the permanent magnet part. The extending directions of the guiding straight rib and the guiding straight groove are the same as the axial direction of the winding cylinder. The guiding straight rib is slidably arranged in the guiding straight groove.

4. The generator driven by the Scotch yoke internal combustion engine according to claim 2, wherein The winding cylinder is a component made of insulating material.

5. The generator driven by the Scotch yoke internal combustion engine according to any one of claims 1-4, wherein The extending axis of the first connecting rod structure and the extending axis of the second connecting rod structure are on the same straight line, and the extending direction of this straight line is perpendicular to the extending direction of the sliding straight groove.

6. The generator driven by the Scotch yoke internal combustion engine according to any one of claims 1-4, wherein Guide rails are provided on the groove walls of the sliding straight groove. The slider structure is provided with guide grooves adapted to the guide rails.

7. The generator driven by the Scotch yoke internal combustion engine according to any one of claims 1-4, wherein The crankshaft is further provided with two balance weights, which are respectively connected to two connecting crank positions between the first main journal and the connecting rod journal and between the second main journal and the connecting rod journal, and the two balance weights and the connecting rod journal are respectively located on both sides of the central axis of the crankshaft.

8. The generator driven by a Scotch yoke internal combustion engine according to any one of claims 1-4, wherein the Scotch yoke internal combustion engine further includes a flywheel, and the flywheel is installed at one of the ends of the first main journal and the end of the second main journal. The flywheel rotates synchronously with the crankshaft, and the flywheel is located inside the crankcase, and the other of the ends of the first main journal and the end of the second main journal extends to the outside of the crankcase and is set as a starting end.

9. The generator driven by a Scotch yoke internal combustion engine according to any one of claims 1-4, wherein the piston has a bottom dead center close to the crankshaft and a top dead center far from the crankshaft in the cylinder chamber, and the piston reciprocates once between the top dead center and the bottom dead center to complete one working cycle.

10. The generator driven by a Scotch yoke internal combustion engine according to any one of claims 1-4, wherein the crankcase is provided with a plurality of support feet for stable support.

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