Range-extending type engine applied to agricultural machine

Abstract

The invention relates to the technical field of extended-range engines, and discloses an extended-range engine applied to agricultural machinery, which comprises an engine body, an air inlet pipe and an exhaust pipe, the air inlet pipe and the exhaust pipe are mounted on the engine body, and a spiral pipe is fixedly connected to the tail end of the exhaust pipe and wound outside the air inlet pipe. The tail end of the spiral pipe is sequentially connected with a power generation structure, an adsorption structure and an exhaust port, a power storage unit is installed on one side of the power generation structure, the tail end of the air inlet pipe is sequentially connected with a pressurization structure and an air inlet, and the air inlet and the exhaust port are both connected with corresponding connectors on the agricultural machine. According to the extended-range engine applied to the agricultural machine, through mutual cooperation of the spiral pipe, the power generation structure and the pressurization structure, temperature rise and pressurization of inlet air are achieved, so that the combustion efficiency of the engine body is improved, oil consumption and emission of the engine body are reduced, and the influence of low-temperature frosting on the filter is restrained; meanwhile, the energy of the tail gas is recycled, and the energy utilization rate is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of range-extended engines, specifically a range-extended engine applied to agricultural machinery. Background Art

[0002] A range-extended engine is a hybrid technology solution for new energy vehicles. In recent years, range-extended engines have gradually penetrated into the field of agricultural machinery. Its core principle is that the engine drives a generator to generate electricity, and then the electricity is used for the motor connected to the wheels, thereby driving the wheels to rotate and realizing the operation of the vehicle. At the same time, the excess electricity will be charged into the battery pack. When in low-load working conditions (such as when the agricultural machinery returns empty), it is driven purely by electricity, the engine operation stops, and the battery pack is directly used to drive the motor to operate. Compared with the internal combustion engines used in traditional agricultural machinery, when using a range-extended engine, the fuel consumption of the agricultural machinery is lower, the operation of the agricultural machinery is more stable, the noise is lower, and it can bring a better driving experience for the operator.

[0003] For example, in the prior art, the patent with the patent authorization announcement number CN103291446B discloses an engine of a range-extended electric vehicle and the electric vehicle. The engine is a piston engine, and the crankshaft of the engine is located in a crankcase. Both ends of the crankshaft extend out of the crankcase and are at least used to directly connect to the generator of the electric vehicle; the above device adopts a direct connection transmission structure, which has the advantages of high transmission efficiency, compact structure and reduced weight of the transmission system compared with the prior art, reduces energy consumption, and saves manufacturing and use costs; both ends of the crankshaft extend out of the crankcase, which can drive as many components as possible, such as components that need to be driven by power, such as those used to connect the air-conditioning compressor, oil pump, water pump, etc., improves the transmission efficiency, has a small installation space and is light in weight; and makes its working conditions adapt to the required working conditions of the range-extended electric vehicle, improves work efficiency, saves energy, effectively reduces the emissions of the engine, reduces production costs and operating costs, and is suitable for use in small and lightweight vehicles.

[0004] However, the above range-extended engine still has certain defects when in use:

[0005] When the above range-extended engine is in use, it will generate high-temperature exhaust gas, and the exhaust gas contains a large amount of unutilized energy, resulting in limited energy utilization efficiency. Moreover, if the high-temperature exhaust gas is not properly treated, it may also cause thermal pollution to the environment. Especially when used on agricultural machinery, it will damage the cultivated land and pose potential hazards to the farmland ecosystem and crop growth. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides a range-extended engine applied to agricultural machinery, which improves the utilization efficiency of exhaust gas and reduces the pollution of exhaust gas.

[0007] To achieve the above object, the present invention provides the following technical solutions: A range-extended engine applied to agricultural machinery, including an engine body, an intake pipe and an exhaust pipe installed on the engine body. A spiral pipe is fixedly connected to the end of the exhaust pipe, and the spiral pipe is wound around the outside of the intake pipe. The end of the spiral pipe is sequentially connected to a power generation structure, an adsorption structure and an exhaust port. A power storage unit is installed on one side of the power generation structure. The end of the intake pipe is sequentially connected to a supercharging structure and an air inlet, and both the air inlet and the exhaust port are connected to corresponding interfaces on the agricultural machinery. The power generation structure is electrically connected to the power storage unit, and the power generation structure is electrically connected to the supercharging structure. A heat conduction material (such as whether to add thermal grease) is filled between the contact area of the spiral pipe and the intake pipe or between them.

[0008] Further, the power generation structure includes a fixed box fixedly connected to the end of the spiral pipe. A heat conduction plate is fixedly connected to the middle of the fixed box. A heating pipe and a bismuth telluride semiconductor plate are installed in the fixed box. The heating pipe and the bismuth telluride semiconductor plate are separated by the heat conduction plate. The top of the heating pipe is connected to the spiral pipe in communication. The bottom of the heating pipe is fixedly connected to a connecting pipe. Water inlets and water outlets are respectively opened on the upper and lower surfaces of the fixed box on the side close to the heating pipe. Sealing covers are sleeved on the outer walls of the water inlets and the water outlets. The heating pipe is arranged as a corrugated pipe. A heat conduction liquid is added on one side of the heating pipe in the fixed box. A sealing plate for providing fixation to the heat conduction plate is installed on one side of the fixed box. A fixing plate is fixedly connected to one side of the sealing plate. A stud is fixedly connected to one side of the fixed box. A clamping groove for clamping with the stud is opened on the surface of the fixing plate. A fixing sleeve is threadedly connected to the outer wall of the stud.

[0009] Further, the power storage unit includes a connecting box installed on the side of the fixed box away from the stud. A lithium battery is slidably connected in the connecting box. A cover plate is rotatably connected to the top of the connecting box. The lithium battery is electrically connected to the bismuth telluride semiconductor plate.

[0010] Further, the supercharging structure includes a turbine housing installed at the end of the intake pipe. A rotating disk is rotatably connected in the turbine housing. A fixed frame is fixedly connected to one side of the turbine housing. A motor is fixedly connected to the fixed frame. The output shaft of the motor is fixedly connected to the rotating disk. A plurality of equally spaced turbine blades are fixedly connected to the outside of the rotating disk. The motor is electrically connected to both the lithium battery and the bismuth telluride semiconductor plate. The top opening of the turbine housing is fixedly connected to the air inlet.

[0011] Further, the adsorption structure includes an adsorption box fixedly connected to the end of the connecting pipe. A plurality of adsorption grooves are opened on the outer wall of the adsorption box. A placement box is slidably connected in each adsorption groove. An adsorption block is installed in the placement box. An air outlet pipe is fixedly connected to the top surface of the placement box. An exhaust port is installed at the end of the air outlet pipe. A plurality of air guide holes are opened on the bottom surface of each placement box.

[0012] Further, a handle is fixedly connected to the outside of the placement box.

[0013] Furthermore, one side of the bottom of the connection box is fixedly connected with a diversion pipe. A diversion groove corresponding to the position of the diversion pipe is opened on one side of the fixed box close to the heating pipe. A closing plate is fixedly connected to one side of the diversion pipe located inside the connection box.

[0014] Furthermore, a sealing plug is fixedly connected inside the diversion pipe, and the sealing plug is of a valve structure.

[0015] Furthermore, a plurality of heat conducting fins are fixedly connected to one side of the heat conducting plate close to the heating pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The range extender engine applied to agricultural machinery realizes the heating and pressurization of the intake air through the mutual cooperation of the spiral pipe, the power generation structure and the pressurization structure, thereby improving the combustion efficiency of the engine body, reducing the fuel consumption and emissions of the engine body, suppressing the influence of low-temperature frosting on the filter, and at the same time recovering the energy of the exhaust gas, improving the energy utilization rate and reducing the temperature of the exhaust gas; by using the adsorption structure, the hierarchical adsorption of the exhaust gas is realized, thereby reducing the content of pollutants in the exhaust gas, achieving the effect of energy conservation and emission reduction, improving the utilization efficiency of the exhaust gas, and reducing the pollution of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structure diagram of the whole of the present invention;

[0019] Figure 2 is a three-dimensional structure diagram of the engine body of the present invention;

[0020] Figure 3 is a three-dimensional structure diagram of the spiral pipe, the pressurization structure and the adsorption structure of the present invention;

[0021] Figure 4 is a three-dimensional structure diagram of the spiral pipe and the pressurization structure of the present invention;

[0022] Figure 5 is a three-dimensional split structure diagram of the electricity storage structure and the power generation structure of the present invention;

[0023] Figure 6 is a three-dimensional split structure diagram of the power generation structure of the present invention;

[0024] Figure 7 is a three-dimensional split sectional structure diagram of the power generation structure of the present invention;

[0025] Figure 8 is a three-dimensional structure diagram of the heat conducting plate and the heat conducting fins of the present invention;

[0026] Figure 9Schematic diagram of the three-dimensional split cross-sectional structure of the diversion tube, closing plate and sealing plug of the present invention;

[0027] Figure 10 Schematic diagram of the three-dimensional split structure of the adsorption structure of the present invention;

[0028] Figure 11 Schematic diagram of the three-dimensional split structure of the placement box, adsorption block and handle of the present invention;

[0029] Figure 12 Schematic three-dimensional structure diagram of the pressurization structure of the present invention;

[0030] Figure 13 Schematic three-dimensional structure diagram of the motor, rotating disk and turbine blade of the present invention.

[0031] In the figure: 1, engine body; 2, intake pipe; 3, exhaust pipe; 4, spiral pipe; 5, intake port; 6, exhaust port; 7, fixed box; 8, heat conducting plate; 9, heating pipe; 10, connecting pipe; 11, water inlet; 12, water outlet; 13, bismuth telluride semiconductor plate; 14, sealing plate; 15, fixing plate; 16, stud; 17, fixing sleeve; 18, sealing cover; 19, connecting box; 20, lithium battery; 21, cover plate; 22, turbine housing; 23, rotating disk; 24, fixing frame; 25, motor; 26, turbine blade; 27, adsorption box; 28, adsorption groove; 29, placement box; 30, adsorption block; 31, air guide hole; 32, handle; 33, heat conducting fin; 34, diversion tube; 35, diversion groove; 36, closing plate; 37, sealing plug; 38, outlet pipe. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0033] Please refer to Figures 1 to 13 , an extended-range engine applied to agricultural machinery, including an engine body 1, an intake pipe 2 and an exhaust pipe 3 installed on the engine body 1. The end of the exhaust pipe 3 is fixedly connected with a spiral pipe 4. The spiral pipe 4 is wound around the outside of the intake pipe 2. The end of the spiral pipe 4 is sequentially connected with a power generation structure, an adsorption structure and an exhaust port 6. A power storage unit is installed on one side of the power generation structure. The end of the intake pipe 2 is sequentially connected with a pressurization structure and an intake port 5. Both the intake port 5 and the exhaust port 6 are connected to the corresponding interfaces on the agricultural machinery. The spiral pipe 4 can transfer the heat in the exhaust gas to the intake air, thereby preheating the intake air, increasing the intake air temperature, reducing the energy required for fuel atomization, which helps to improve the combustion efficiency, reduce the fuel consumption and emissions of the engine body 1, reduce the emissions of HC under cold start conditions, and at the same time inhibit the influence of low-temperature frosting on the filter.

[0034] As a preferred technical solution of the present invention, the power generation structure includes a fixed box 7 fixedly connected to the end of the spiral tube 4. A heat conduction plate 8 is fixedly connected to the middle of the fixed box 7. A heating tube 9 and a bismuth telluride semiconductor plate 13 are installed in the fixed box 7. The heating tube 9 and the bismuth telluride semiconductor plate 13 are separated by the heat conduction plate 8. The top end of the heating tube 9 is communicated with the spiral tube 4. A connecting tube 10 is fixedly connected to the bottom end of the heating tube 9. Water inlets 11 and water outlets 12 are respectively opened on the upper and lower surfaces of the fixed box 7 near the heating tube 9. Sealing covers 18 are sleeved on the outer walls of the water inlets 11 and the water outlets 12. The heating tube 9 is arranged as a wavy pipeline. A heat conduction liquid is added on one side of the heating tube 9 in the fixed box 7. A sealing plate 14 for providing fixation to the heat conduction plate 8 is installed on one side of the fixed box 7. A fixing plate 15 is fixedly connected to one side of the sealing plate 14. A stud 16 is fixedly connected to one side of the fixed box 7. A clamping groove for clamping with the stud 16 is opened on the surface of the fixing plate 15. A fixing sleeve 17 is threadedly connected to the outer wall of the stud 16. The bismuth telluride semiconductor plate 13 is made of bismuth telluride material. Bismuth telluride is a good thermoelectric material with a high Seebeck coefficient and a low thermal conductivity, and its figure of merit for thermoelectricity is relatively high, which can convert the environmental temperature difference into electrical energy. The heat conduction liquid is a liquid with high heat conduction efficiency, high chemical stability and low thermal expansion coefficient, such as hydrogenated terphenyl type heat conduction oil, silicon-based heat conduction liquid, etc.

[0035] As a preferred technical solution of the present invention, the electricity storage unit includes a connection box 19 installed on the side of the fixed box 7 away from the stud 16. A lithium battery 20 is slidably connected in the connection box 19. A cover plate 21 is rotatably connected to the top of the connection box 19. The lithium battery 20 is electrically connected to the bismuth telluride semiconductor plate 13. The electricity storage unit itself can be connected to an external power supply. The power generation structure is mainly used to supplement the power supply of the electricity storage unit itself to realize the rational utilization of resources.

[0036] As a preferred technical solution of the present invention, the supercharging structure includes a turbine housing 22 installed at the end of the intake pipe 2. A rotating disk 23 is rotatably connected in the turbine housing 22. A fixing frame 24 is fixedly connected to one side of the turbine housing 22. A motor 25 is fixedly connected to the fixing frame 24. The output shaft of the motor 25 is fixedly connected to the rotating disk 23. A plurality of equally spaced turbine blades 26 are fixedly connected to the outside of the rotating disk 23. The motor 25 is electrically connected to both the lithium battery 20 and the bismuth telluride semiconductor plate 13. The top opening of the turbine housing 22 is fixedly connected to the air inlet 5. The supercharging structure can supercharge the intake air, increase the intake air flow rate, thereby optimizing the combustion process, improving the engine power output and fuel economy, and further reducing harmful emissions.

[0037] As a preferred technical solution of the present invention, the adsorption structure includes an adsorption box 27 fixedly connected to the end of the connecting pipe 10. A plurality of adsorption grooves 28 are formed in the outer wall of the adsorption box 27. A placement box 29 is slidably connected in each adsorption groove 28. An adsorption block 30 is installed in the placement box 29. The top surface of the placement box 29 is fixedly connected to an air outlet pipe 38. An exhaust port 6 is installed at the end of the air outlet pipe 38. A plurality of air guide holes 31 are formed in the bottom surface of each placement box 29. Different adsorption materials are placed in each placement box 29, which are, from bottom to top, a VOCs adsorption layer, a CO2 adsorption layer, a molecular sieve adsorption layer, etc., capable of adsorbing VOCs, CO2 and other pollutants in the tail gas. The VOCs adsorption layer adopts an activated carbon fiber-metal organic framework composite material, the CO2 adsorption layer adopts an amine-functionalized mesoporous silica gel, and the molecular sieve adsorption layer adopts a rare earth-modified molecular sieve.

[0038] It should be noted that the placement box 29 and the adsorption box 27 are hermetically connected to prevent the leakage of tail gas.

[0039] As a preferred technical solution of the present invention, a handle 32 is fixedly connected to the outside of the placement box 29. The handle 32 facilitates the operator to pull the placement box 29.

[0040] As a preferred technical solution of the present invention, a diversion pipe 34 is fixedly connected to one side of the bottom of the connection box 19. A diversion groove 35 corresponding to the position of the diversion pipe 34 is formed in one side of the fixed box 7 close to the heating pipe 9. A closing plate 36 is fixedly connected to one side of the diversion pipe 34 located in the connection box 19. When the lithium battery 20 catches fire, the closing plate 36 will be ignited, thereby opening the diversion pipe 34. At this time, the liquid in the connection box 19 will flow into the connection box 19 through the diversion pipe 34 to initially extinguish the lithium battery 20 and improve the safety during the use of the lithium battery 20. The closing plate 36 should be made of a material with a low melting point, high strength, corrosion resistance and good sealing performance.

[0041] As a preferred technical solution of the present invention, a sealing plug 37 is fixedly connected in the diversion pipe 34. The sealing plug 37 is of a valve structure. The sealing plug 37 only allows the liquid to flow from the connection box 19 to the fixed box 7, preventing the fire extinguishing liquid from flowing back and avoiding the corrosion of the heating pipe 9 by the fire extinguishing liquid.

[0042] As a preferred technical solution of the present invention, a plurality of heat conducting fins 33 are fixedly connected to the side of the heat conducting plate 8 close to the heating pipe 9. The heat conducting fins 33 can increase the heat exchange area of the heat conducting plate 8 and improve the heat exchange efficiency of the heat conducting plate 8, thereby achieving a better power generation effect.

[0043] The working principle of the present invention is as follows:

[0044] After the engine body 1 starts, the high-temperature exhaust gas generated during its operation will first enter the spiral tube 4 to preheat the intake air, and then enter the heating tube 9 to heat the heat-conducting liquid. The heat-conducting liquid will then transfer the heat to the heat-conducting fins 33 and the heat-conducting plate 8, thereby generating a temperature difference on both sides of the bismuth telluride semiconductor plate 13. The bismuth telluride semiconductor plate 13 generates electric energy, which will be preferentially supplied to the motor 25 to drive the turbine blade 26 to rotate, realizing the supercharging of the intake air. The excess electric energy will be supplied to the lithium battery 20. Subsequently, the exhaust gas will enter from the bottom of the adsorption box 27 through the connecting pipe 10, pass through the VOCs adsorption layer, the CO2 adsorption layer and the molecular sieve adsorption layer in sequence, and then be discharged through the exhaust port 6 after being processed.

[0045] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An extended-range engine applied to agricultural machinery, comprising an engine body (1), an intake pipe (2) and an exhaust pipe (3) mounted on the engine body (1), characterized in that, The end of the exhaust pipe (3) is fixedly connected to a spiral pipe (4). The spiral pipe (4) is wound around the outside of the intake pipe (2). The end of the spiral pipe (4) is successively connected to a power generation structure, an adsorption structure and an exhaust port (6). A power storage unit is installed on one side of the power generation structure. The end of the intake pipe (2) is successively connected to a pressurization structure and an air inlet (5). Both the air inlet (5) and the exhaust port (6) are connected to the corresponding interfaces on the agricultural machinery. The power generation structure and the power storage unit are electrically connected, and the power generation structure and the pressurization structure are electrically connected.

2. The range extender engine applied to agricultural machinery according to claim 1, characterized in that, The power generation structure includes a fixed box (7) fixedly connected to the end of the spiral pipe (4). A heat conduction plate (8) is fixedly connected to the middle of the fixed box (7). A heating pipe (9) and a bismuth telluride semiconductor plate (13) are installed in the fixed box (7). The heating pipe (9) and the bismuth telluride semiconductor plate (13) are separated by the heat conduction plate (8). The top of the heating pipe (9) is connected to the spiral pipe (4). The bottom end of the heating pipe (9) is fixedly connected to a connecting pipe (10). Water inlets (11) and water outlets (12) are respectively opened on the upper and lower surfaces of the fixed box (7) close to the heating pipe (9). Sealing caps (18) are sleeved on the outer walls of the water inlets (11) and the water outlets (12). The heating pipe (9) is arranged as a corrugated pipe. A heat conduction liquid is added on one side of the heating pipe (9) in the fixed box (7). A sealing plate (14) for providing fixation to the heat conduction plate (8) is installed on one side of the fixed box (7). A fixing plate (15) is fixedly connected to one side of the sealing plate (14). A stud (16) is fixedly connected to one side of the fixed box (7). A clamping groove for clamping with the stud (16) is opened on the surface of the fixing plate (15). A fixing sleeve (17) is threadedly connected to the outer wall of the stud (16).

3. The range extender engine applied to agricultural machinery according to claim 2, characterized in that, The power storage unit includes a connecting box (19) installed on the side of the fixed box (7) away from the stud (16). A lithium battery (20) is slidably connected in the connecting box (19). A cover plate (21) is rotatably connected to the top of the connecting box (19). The lithium battery (20) and the bismuth telluride semiconductor plate (13) are electrically connected.

4. The range extender engine applied to agricultural machinery according to claim 3, characterized in that, The pressurization structure includes a turbine housing (22) installed at the end of the intake pipe (2). A rotating disk (23) is rotatably connected in the turbine housing (22). A fixing frame (24) is fixedly connected to one side of the turbine housing (22). A motor (25) is fixedly connected to the fixing frame (24). The output shaft of the motor (25) is fixedly connected to the rotating disk (23). A plurality of equally spaced turbine blades (26) are fixedly connected to the outside of the rotating disk (23). The motor (25) is electrically connected to both the lithium battery (20) and the bismuth telluride semiconductor plate (13). The top opening of the turbine housing (22) is fixedly connected to the air inlet (5).

5. The range extender engine applied to agricultural machinery according to claim 2, 3 or 4, characterized in that the adsorption structure includes an adsorption box (27) fixedly connected to the end of the connecting pipe (10). A plurality of adsorption grooves (28) are formed in the outer wall of the adsorption box (27). A placement box (29) is slidably connected in each adsorption groove (28). An adsorption block (30) is installed in the placement box (29). An air outlet pipe (38) is fixedly connected to the top surface of the placement box (29). An exhaust port (6) is installed at the end of the air outlet pipe (38). A plurality of air guide holes (31) are formed in the bottom surface of each placement box (29).

6. The range extender engine applied to agricultural machinery according to claim 5, characterized in that, A handle (32) is fixedly connected to the outside of the placement box (29).

7. The range extender engine applied to agricultural machinery according to claim 3, 4 or 6, characterized in that, A flow guide pipe (34) is fixedly connected to one side of the bottom of the connection box (19). A flow guide groove (35) corresponding to the position of the flow guide pipe (34) is formed in one side of the fixed box (7) close to the heating pipe (9). A sealing plate (36) is fixedly connected to one side of the flow guide pipe (34) located in the connection box (19).

8. The range extender engine applied to agricultural machinery according to claim 7, characterized in that, A sealing plug (37) is fixedly connected in the flow guide pipe (34). The sealing plug (37) is of a valve structure.

9. The range extender engine applied to agricultural machinery according to claim 2, 3, 4, 6 or 8, characterized in that, A plurality of heat conducting fins (33) are fixedly connected to one side of the heat conducting plate (8) close to the heating pipe (9).

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