A heat energy recovery device for a hydrogen fuel cell engine

Abstract

The present invention discloses a heat energy recovery device for a hydrogen fuel cell engine, belonging to the field of heat energy recovery equipment. A heat energy recovery device for a hydrogen fuel cell engine includes a fuel cell engine, and further includes: a heat collection mechanism, the heat collection mechanism is inserted on the top of the fuel cell engine, and the bottoms of the two side walls of the heat collection mechanism are connected to the two side walls of the fuel cell engine. The heat collection mechanism is used to collect the heat energy dissipated by the fuel cell engine; a power generation mechanism, the power generation mechanism is arranged on one side of the fuel cell engine, and one input end of the power generation mechanism is conductively connected to the output end of the heat collection mechanism. The power generation mechanism is used to convert the heat energy conveyed by the heat collection mechanism. The present invention can double-recycle the heat energy dissipated by the fuel cell engine, thereby improving the heat energy recovery rate and facilitating the user to utilize the recovered energy.

Description

Technical Field

[0001] The present invention relates to the field of heat energy recovery equipment, and more specifically, to a heat energy recovery device for a hydrogen fuel cell engine. Background Art

[0002] Hydrogen fuel cells are known as the "ultimate energy source of the 21st century". With no secondary pollution during the energy production process and being clean and healthy as the fundamental, after the fuel cell consumes the renewable resource "hydrogen", while generating electric energy, a large amount of heat energy is released. A hydrogen fuel cell is an energy conversion device that can continuously convert chemical energy into electric energy through oxidation-reduction reactions occurring at the anode and cathode. Characteristics: As long as the supply of fuel and oxidant is maintained, the fuel cell will continuously generate electric energy. The fuel cell converts the chemical energy stored in the fuel into electric energy. As a new type of chemical power source, the fuel cell is the fourth power generation technology after hydraulic power generation, thermal power generation, and nuclear power generation. There is an existing patent for a heat energy recovery system for a hydrogen fuel cell engine. The patent publication number CN215527769U includes a fuel cell engine, a heat dissipation system, a water-heat system, a temperature control system, and an energy recovery system. This application utilizes the heat absorption and release during the phase change process in the energy recovery system to achieve the recovery and utilization of the waste heat energy of the fuel cell, effectively solving the problem in the prior art that energy cannot be stored, ultimately realizing the concept of secondary utilization of environmental protection energy, and bringing huge benefits to the economy of energy at the same time.

[0003] Regarding the above related technologies, the inventors believe that there are the following defects: Although it can enable the recovery and utilization of the waste heat energy of the fuel cell, the heat energy recovery efficiency of its hydrogen fuel cell engine is low, resulting in the loss of most of the heat, and thus the repeated utilization rate of heat energy. Therefore, we propose a heat energy recovery device for a hydrogen fuel cell engine to solve the above existing problems. Summary of the Invention

[0004] 1. Technical Problems to be Solved

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a heat energy recovery device for a hydrogen fuel cell engine, which can double-recover the heat energy dissipated by the fuel cell engine (1), thereby improving the heat energy recovery rate and facilitating the user to utilize the recovered energy.

[0006] 2. Technical Solutions

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A heat energy recovery device for a hydrogen fuel cell engine, including a fuel cell engine, further comprising:

[0009] A heat collection mechanism, which is plugged into the top of the fuel cell engine, and the bottoms of the two side walls of the heat collection mechanism are connected to the two side walls of the fuel cell engine. The heat collection mechanism is used to collect the thermal energy dissipated by the fuel cell engine;

[0010] A power generation mechanism, which is arranged on one side of the fuel cell engine, and one input end of the power generation mechanism is conductively connected to the output end of the heat collection mechanism. The power generation mechanism is used to convert the thermal energy transported by the heat collection mechanism;

[0011] A gas pumping mechanism, which is arranged on one side of the power generation mechanism, and the input end of the gas pumping mechanism is connected to the output end corresponding to the heat collection mechanism on the power generation mechanism. The gas pumping mechanism is used to pump out the gas flowing through the power generation mechanism from the heat collection mechanism;

[0012] A heat transfer mechanism, which is sleeved outside the fuel cell engine, and the outer wall of the heat transfer mechanism is connected to the inner wall of the heat collection mechanism. At the same time, the output end of the heat transfer mechanism is conductively connected to the other input end of the power generation mechanism. The heat transfer mechanism is used to directly conduct the thermal energy dissipated outside the fuel cell engine and conduct the thermal energy to the power generation mechanism; and

[0013] A liquid reflux mechanism, which is arranged on one side of the power generation mechanism, and the input end of the liquid reflux mechanism is connected to the output end corresponding to the heat transfer mechanism on the power generation mechanism. At the same time, the output end of the liquid reflux mechanism is conductively connected to the input end of the heat transfer mechanism.

[0014] Further, the heat collection mechanism includes a collection cover, and a gas guide pipe is inlaid and connected to the top end of the collection cover. The output end of the gas guide pipe is conductively connected to one input end of the power generation mechanism;

[0015] Fixing pieces are arranged at the bottoms of the two side walls of the inner cavity of the collection cover, and one side of the fixing piece is connected to the outer wall of the fuel cell engine.

[0016] Further, the heat collection mechanism further includes a hollowed-out tray arranged at the top of the inner cavity of the collection cover and at the position of the input end of the gas guide pipe.

[0017] Further, the power generation mechanism includes a positioning frame, and thermoelectric generators are arranged on both sides of the inner cavity of the positioning frame. The thermoelectric generators are used to generate electricity by using temperature difference, so as to convert thermal energy into electrical energy for recovery;

[0018] A heat conduction component is arranged on the bottom surface of each thermoelectric generator. The heat conduction component is used to conduct heat to the bottom surface of the thermoelectric generator;

[0019] Meanwhile, a heat dissipation component is provided on the top surface of each thermoelectric power generation sheet, and the heat dissipation component is used to dissipate heat from the upper surface of the thermoelectric power generation sheet.

[0020] Furthermore, the heat conduction component includes a first aluminum plate provided on the bottom surface of the thermoelectric power generation sheet and a flow pipe provided on the bottom surface of the first aluminum plate, and the flow pipe is used to circulate hot air or hot circulating water.

[0021] Furthermore, the heat dissipation component includes a second aluminum plate provided on the top surface of the thermoelectric power generation sheet, and a plurality of heat dissipation rods are provided on the top surface of the second aluminum plate. The heat dissipation rods are used to cooperate with the second aluminum plate to quickly cool the top surface of the thermoelectric power generation sheet, so that a temperature difference is formed between the upper and lower surfaces of the thermoelectric power generation sheet;

[0022] The middle lower positions of the plurality of heat dissipation rods are connected by a holding frame, and the bottom surface of the holding frame is connected to the top surface of the second aluminum plate by a plurality of columns.

[0023] Furthermore, the gas pumping mechanism includes an exhaust pipe, an air pump is provided in the middle of the exhaust pipe, and one end of the exhaust pipe is conductively connected to the output end of one of the flow pipes.

[0024] Furthermore, the heat transfer mechanism includes a metal ring sleeved on the outer wall surface of the fuel cell engine, and a plurality of metal boxes are provided around the outer wall of the metal ring. The metal boxes are used to hold heat-conducting heat, and the bottom surfaces of the plurality of metal boxes are conductively connected by a liquid inlet pipe, and one end of the liquid inlet pipe is conductively connected to the output end of the liquid return mechanism;

[0025] The top surfaces of the plurality of metal boxes are conductively connected by a liquid outlet pipe, and the output end of the liquid outlet pipe is conductively connected to the input end of another one of the flow pipes.

[0026] Furthermore, the liquid return mechanism includes a liquid extraction pipe, one end of the liquid extraction pipe is conductively connected to the output end of the flow pipe opposite to the liquid outlet pipe, the other end of the liquid extraction pipe is provided with a fin radiator, and the output end of the fin radiator is conductively connected to the liquid inlet pipe through a return pipe;

[0027] An infusion pump is connected in series in the middle of the liquid extraction pipe.

[0028] Furthermore, a filter cotton is provided in the inner cavity of the hollow tray, and the filter cotton is used to filter the air flowing through.

[0029] 3. Beneficial effects

[0030] Compared with the prior art, the advantages of the present invention are as follows:

[0031] (1) In this solution, through the gas pumping mechanism, it can be connected to the power generation mechanism and the heat collection mechanism, so that the gas pumping mechanism can pump upward the heat dissipated by the fuel cell engine covered by the heat collection mechanism. Then, the heat can flow through the power generation mechanism and be discharged through the gas pumping mechanism. The heat transfer mechanism can be installed in the inner cavity of the heat collection mechanism or directly attached to the outer wall of the fuel cell engine, enabling the fuel cell engine to directly heat the heat transfer mechanism. Then, through the liquid reflux mechanism, it can be connected to the power generation mechanism and the heat transfer mechanism, so that the heated liquid in the heat transfer mechanism can be pumped out, flow through the power generation mechanism, and then the liquid flowing through the power generation mechanism is pumped out for cooling and finally refluxed and transported back to the heat transfer mechanism to form a cycle, which can not only cool the fuel cell engine but also recover the heat energy dissipated by the fuel cell engine;

[0032] Since both the liquid and gas flowing through the bottom surface of the power generation mechanism will heat the bottom surface of the power generation mechanism, the bottom of the power generation mechanism becomes very hot. However, the temperature of the upper surface of the power generation mechanism is low, resulting in a certain temperature difference between the upper and lower surfaces of the power generation mechanism, which facilitates the power generation of the power generation mechanism, achieving the conversion of heat energy into electrical energy and playing a role in recovering heat energy.

[0033] (2) In this solution, through the collection cover in the heat collection mechanism, it can be fixed to the outer wall of the fuel cell engine through the fixing piece and connected to one of the input ends of the power generation mechanism through the air duct, so that the hot air can be conducted to the bottom of the power generation mechanism and then heat the bottom of the power generation mechanism. Through the hollowed-out tray, the flowing hot air can be filtered to prevent foreign objects from entering the power generation mechanism.

[0034] (3) In this solution, through the positioning frame in the power generation mechanism, two thermoelectric generators can be installed and fixed. Then, the two thermoelectric generators can be respectively installed with corresponding heat conduction components and heat dissipation components. Next, the two heat conduction components are respectively connected to the heat collection mechanism and the heat transfer mechanism, enabling the dual recovery of the heat generated by the fuel cell engine. And by heating the two heat conduction components, the bottom surfaces of the two thermoelectric generators can be made very hot. At the same time, through the two heat dissipation components, the top surfaces of the two thermoelectric generators can be dissipated, resulting in a temperature difference between the upper and lower surfaces of the two thermoelectric generators, which facilitates the thermoelectric generation of the thermoelectric generators. Through the first aluminum plate in the heat conduction component, the flow pipe can be installed and the heat in the flow pipe can be conducted. The flow pipe can be used to flow hot air or hot circulating water.

[0035] (4) In this solution, through the second aluminum plate in the heat dissipation component, it can be installed on the top surface of the thermoelectric generator and can also install multiple heat dissipation rods. Through the multiple heat dissipation rods, the heat conducted on the second aluminum plate can be dissipated, thereby enabling the second aluminum plate to be quickly cooled. Furthermore, the temperature of the second aluminum plate and the first aluminum plate can be made different, forming a certain temperature difference. Through the cage and multiple columns, a stable foundation can be provided for the multiple heat dissipation rods, thereby improving the stability of the use of the multiple heat dissipation rods. Through the exhaust pipe in the gas pumping mechanism, it can be connected to the flow pipe for circulating gas, so that the hot gas in the flow pipe can be pumped out by the air pump.

[0036] (5) In this solution, through the metal ring in the heat transfer mechanism, it can be installed on the outer wall surface of the fuel cell engine and can also install multiple metal boxes. At the same time, the metal ring can transfer the heat conducted by the fuel cell engine to the metal boxes, thereby heating the metal boxes. Then, through the liquid inlet pipe, a liquid reflux mechanism can be externally connected, so that the circulating liquid can flow through the metal boxes. Then, the circulating liquid can flow through the liquid outlet pipe into the flow pipe for circulating liquid, thereby heating the corresponding first aluminum plate.

[0037] (6) In this solution, through the liquid extraction pipe in the liquid reflux mechanism, it can be conductively connected to the output end of the flow pipe opposite to the liquid outlet pipe. Through the liquid infusion pump, the circulating liquid in the metal box can be pumped into the flow pipe for circulating liquid, thereby heating the flow pipe. Then, the liquid is pumped into the fin radiator. Through the fin radiator, the circulating liquid can be cooled and the cooled circulating liquid can be transported through the return pipe to the liquid inlet pipe, thereby forming a cycle to facilitate the circulating flow of the circulating liquid. Description of the Drawings

[0038] Figure 1 is a schematic structural diagram of the present invention;

[0039] Figure 2 is a schematic side structural diagram of the present invention;

[0040] Figure 3 is a schematic structural diagram of the heat collection mechanism of the present invention;

[0041] Figure 4 is a schematic bottom structural diagram of the heat collection mechanism of the present invention;

[0042] Figure 5 is a schematic structural diagram of the power generation mechanism of the present invention;

[0043] Figure 6 is a schematic structural diagram of the heat conduction component of the present invention;

[0044] Figure 7 is a schematic structural diagram of the heat dissipation component of the present invention;

[0045] Figure 8 Schematic structural diagram of the gas pumping mechanism of the present invention;

[0046] Figure 9 Schematic structural diagram of the heat transfer mechanism of the present invention;

[0047] Figure 10 Schematic structural diagram of the liquid reflux mechanism of the present invention.

[0048] Explanation of reference numerals in the figure:

[0049] 1. Fuel cell engine; 2. Heat collection mechanism; 21. Collection cover; 22. Air duct; 23. Hollowed-out tray; 24. Fixed piece; 3. Power generation mechanism; 31. Positioning frame; 32. Thermoelectric generation sheet; 33. Heat conduction component; 331. First aluminum plate; 332. Flow pipe; 34. Heat dissipation component; 341. Second aluminum plate; 342. Heat dissipation rod; 343. Retaining frame; 344. Column; 4. Gas pumping mechanism; 41. Exhaust pipe; 42. Air pump; 5. Heat transfer mechanism; 51. Metal ring; 52. Metal box; 53. Liquid inlet pipe; 54. Liquid outlet pipe; 6. Liquid reflux mechanism; 61. Liquid extraction pipe; 62. Liquid infusion pump; 63. Fin radiator; 64. Return pipe. Specific implementation mode

[0050] 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0051] Embodiment:

[0052] Please refer to Figure 1-2, A thermal energy recovery device for a hydrogen fuel cell engine, including a fuel cell engine 1, further comprising: a heat collection mechanism 2, the heat collection mechanism 2 is inserted into the top of the fuel cell engine 1, and the bottoms of the two side walls of the heat collection mechanism 2 are connected to the two side walls of the fuel cell engine 1, and the heat collection mechanism 2 is used for collecting the thermal energy dissipated by the fuel cell engine 1; a power generation mechanism 3, the power generation mechanism 3 is arranged on one side of the fuel cell engine 1, and one input end of the power generation mechanism 3 is conductively connected to the output end of the heat collection mechanism 2, and the power generation mechanism 3 is used for converting the thermal energy conveyed by the heat collection mechanism 2; a gas pumping mechanism 4, the gas pumping mechanism 4 is arranged on one side of the power generation mechanism 3, and the input end of the gas pumping mechanism 4 is connected to the output end corresponding to the heat collection mechanism 2 on the power generation mechanism 3, and the gas pumping mechanism 4 is used for pumping out the gas flowing through the power generation mechanism 3 from the heat collection mechanism 2; a heat transfer mechanism 5, the heat transfer mechanism 5 is sleeved on the outer side of the fuel cell engine 1, and the outer wall of the heat transfer mechanism 5 is connected to the inner wall of the heat collection mechanism 2, and at the same time the output end of the heat transfer mechanism 5 is conductively connected to the other input end of the power generation mechanism 3, and the heat transfer mechanism 5 is used for directly conducting the thermal energy dissipated outside the fuel cell engine 1 and conducting the thermal energy into the power generation mechanism 3; and a liquid reflux mechanism 6, the liquid reflux mechanism 6 is arranged on one side of the power generation mechanism 3, and the input end of the liquid reflux mechanism 6 is connected to the output end corresponding to the heat transfer mechanism 5 on the power generation mechanism 3, and at the same time the output end of the liquid reflux mechanism 6 is conductively connected to the input end of the heat transfer mechanism 5;

[0053] Through the gas pumping mechanism 4, it can be conducted with the power generation mechanism 3 and the heat collection mechanism 2, so that the gas pumping mechanism 4 can pump the heat dissipated by the fuel cell engine 1 covered by the heat collection mechanism 2 upwards, and then the heat can flow through the power generation mechanism 3 and then be discharged through the gas pumping mechanism 4. Through the heat transfer mechanism 5, it can be installed in the inner cavity of the heat collection mechanism 2 and can also be directly attached to the outer wall of the fuel cell engine 1, so that the fuel cell engine 1 can directly heat the heat transfer mechanism 5. Then through the liquid reflux mechanism 6, it can be conducted with the power generation mechanism 3 and the heat transfer mechanism 5, so that the heated liquid in the heat transfer mechanism 5 can be pumped out, and then it can flow through the power generation mechanism 3, and then the liquid flowing through the power generation mechanism 3 is pumped out for cooling, and finally it is refluxed and conveyed back to the heat transfer mechanism 5 to form a cycle, which can not only play a role in cooling the fuel cell engine 1, but also recover the thermal energy dissipated by the fuel cell engine 1. Since the liquid and gas flowing through the bottom surface of the power generation mechanism 3 will heat the bottom surface of the power generation mechanism 3, the bottom of the power generation mechanism 3 will be very hot, while the temperature of the upper surface of the power generation mechanism 3 is low, so that a certain temperature difference is formed between the upper and lower surfaces of the power generation mechanism 3, which is convenient for the power generation mechanism 3 to generate electricity, achieving the conversion of thermal energy into electrical energy and playing a role in recovering thermal energy.

[0054] Refer to Figure 3, Figure 4 , the heat collection mechanism 2 includes a collection cover 21. A gas guide pipe 22 is inlaid and connected to the top end of the collection cover 21, and the output end of the gas guide pipe 22 is conductively connected to one of the input ends of the power generation mechanism 3. Fixed pieces 24 are arranged at the bottoms of both side walls of the inner cavity of the collection cover 21, and one side of each fixed piece 24 is connected to the outer wall of the fuel cell engine 1;

[0055] Through the collection cover 21 in the heat collection mechanism 2, it can be fixed to the outer wall of the fuel cell engine 1 through the fixed pieces 24 and conductively connected to one of the input ends of the power generation mechanism 3 through the gas guide pipe 22, so that hot air can be conducted to the bottom of the power generation mechanism 3, and then the bottom of the power generation mechanism 3 can be heated.

[0056] Refer to Figure 4 , the heat collection mechanism 2 further includes a hollowed-out tray 23 arranged at the top of the inner cavity of the collection cover 21 and at the position of the input end of the gas guide pipe 22. Through the hollowed-out tray 23, the flowing hot air can be filtered, and then foreign objects can be prevented from entering the power generation mechanism 3.

[0057] Refer to Figure 1 , Figure 5 , the power generation mechanism 3 includes a positioning frame 31. Thermoelectric generators 32 are arranged on both sides of the inner cavity of the positioning frame 31. The thermoelectric generators 32 are used to generate electricity by using temperature differences, so that heat energy can be converted into electrical energy for recovery; a heat conduction component 33 is arranged on the bottom surface of each thermoelectric generator 32, and the heat conduction component 33 is used to conduct heat to the bottom surface of the thermoelectric generator 32; at the same time, a heat dissipation component 34 is arranged on the top surface of each thermoelectric generator 32, and the heat dissipation component 34 is used to dissipate heat and cool the upper surface of the thermoelectric generator 32;

[0058] Through the positioning frame 31 in the power generation mechanism 3, the two thermoelectric generators 32 can be installed and fixed. Then, the two thermoelectric generators 32 can be respectively installed with corresponding heat conduction components 33 and heat dissipation components 34. Then, the two heat conduction components 33 are respectively connected to the heat collection mechanism 2 and the heat transfer mechanism 5, so that the heat generated by the fuel cell engine 1 can be recovered doubly. And by heating the two heat conduction components 33, the bottom surfaces of the two thermoelectric generators 32 can be made very hot. At the same time, through the two heat dissipation components 34, the upper surfaces of the two thermoelectric generators 32 can be dissipated heat, so that a temperature difference can be formed between the upper and lower surfaces of the two thermoelectric generators 32, so that the thermoelectric generators 32 can generate electricity by using the temperature difference.

[0059] Refer to Figure 5 , Figure 6, the heat conduction component 33 includes a first aluminum plate 331 disposed on the bottom surface of the thermoelectric generator 32 and a circulation pipe 332 disposed on the bottom surface of the first aluminum plate 331. The circulation pipe 332 is used for circulating hot air or hot circulating water. Through the first aluminum plate 331 in the heat conduction component 33, the circulation pipe 332 can be installed and the heat in the circulation pipe 332 can be conducted. Through the circulation pipe 332, hot air or hot circulating water can be circulated.

[0060] Refer to Figure 5 、 Figure 7 , the heat dissipation component 34 includes a second aluminum plate 341 disposed on the top surface of the thermoelectric generator 32. A plurality of heat dissipation rods 342 are disposed on the top surface of the second aluminum plate 341. The heat dissipation rods 342 are used to cooperate with the second aluminum plate 341 to quickly cool the top surface of the thermoelectric generator 32, so that a temperature difference is formed between the upper and lower surfaces of the thermoelectric generator 32; the middle and lower positions of the plurality of heat dissipation rods 342 are connected by a cage 343, and the bottom surface of the cage 343 is connected to the top surface of the second aluminum plate 341 through a plurality of columns 344;

[0061] Through the second aluminum plate 341 in the heat dissipation component 34, it can be installed on the top surface of the thermoelectric generator 32 and the plurality of heat dissipation rods 342 can be installed. Through the plurality of heat dissipation rods 342, the heat conducted by the second aluminum plate 341 can be dissipated, so that the second aluminum plate 341 can be quickly cooled. Furthermore, the temperature of the second aluminum plate 341 and the first aluminum plate 331 can be made different, and a certain temperature difference is formed between the two. Through the cage 343 and the plurality of columns 344, a stable foundation can be provided for the plurality of heat dissipation rods 342, and further the stability of the use of the plurality of heat dissipation rods 342 can be improved.

[0062] Refer to Figure 5 、 Figure 8 , the gas pumping mechanism 4 includes an exhaust pipe 41. An air pump 42 is disposed in the middle of the exhaust pipe 41. One end of the exhaust pipe 41 is conductively connected to the output end of one of the circulation pipes 332; through the exhaust pipe 41 in the gas pumping mechanism 4, it can be connected to the circulation pipe 332 for circulating gas, so that the hot gas in the circulation pipe 332 can be pumped out through the air pump 42.

[0063] Refer to Figure 5 、 Figure 9 , the heat transfer mechanism 5 includes a metal ring 51 sleeved on the outer wall surface of the fuel cell engine 1. A plurality of metal boxes 52 are annularly arranged on the outer wall of the metal ring 51. The metal boxes 52 are used for containing heat-conducting heat. The bottom surfaces of the plurality of metal boxes 52 are conductively connected through a liquid inlet pipe 53, and one end of the liquid inlet pipe 53 is conductively connected to the output end of the liquid return mechanism 6; the top surfaces of the plurality of metal boxes 52 are conductively connected through a liquid outlet pipe 54, and the output end of the liquid outlet pipe 54 is conductively connected to the input end of the other circulation pipe 332;

[0064] Through the metal ring 51 in the heat transfer mechanism 5, it can be installed on the outer wall surface of the fuel cell engine 1, and can also install multiple metal boxes 52. At the same time, the metal ring 51 can transfer the heat conducted by the fuel cell engine 1 to the metal box 52, thereby heating the metal box 52. Then, through the liquid inlet pipe 53, a liquid reflux mechanism 6 can be externally connected, so that the circulating liquid can flow through the metal box 52. Then, the circulating liquid can flow through the liquid outlet pipe 54 into the flow pipe 332 for circulating liquid, and then can heat the corresponding first aluminum plate 331.

[0065] Refer to Figure 9 、 Figure 10 , the liquid reflux mechanism 6 includes a liquid extraction pipe 61. One end of the liquid extraction pipe 61 is conductively connected to the output end of the flow pipe 332 opposite to the liquid outlet pipe 54. The other end of the liquid extraction pipe 61 is equipped with a fin radiator 63. The output end of the fin radiator 63 is conductively connected to the liquid inlet pipe 53 through a reflux pipe 64; a liquid infusion pump 62 is connected in series in the middle of the liquid extraction pipe 61; through the liquid extraction pipe 61 in the liquid reflux mechanism 6, it can be conductively connected to the output end of the flow pipe 332 opposite to the liquid outlet pipe 54. Through the liquid infusion pump 62, the circulating liquid in the metal box 52 can be pumped into the flow pipe 332 for circulating liquid, thereby heating the flow pipe 332, and then pumping the liquid into the fin radiator 63. Through the fin radiator 63, the circulating liquid can be cooled, and the cooled circulating liquid can be transported to the liquid inlet pipe 53 through the reflux pipe 64, thereby forming a cycle to facilitate the circulating flow of the circulating liquid.

[0066] Refer to Figure 4 , a filter cotton is arranged in the inner cavity of the hollow tray 23. Through the filter cotton, the flowing air can be filtered.

[0067] During use: Through the gas pumping mechanism 4, it can be connected to the heat collection mechanism 2 via the power generation mechanism 3, so that the gas pumping mechanism 4 can pump upward the heat dissipated by the fuel cell engine 1 covered by the heat collection mechanism 2. Then, the heat can flow through the power generation mechanism 3 and be discharged through the gas pumping mechanism 4. Through the heat transfer mechanism 5, it can be installed in the inner cavity of the heat collection mechanism 2 or directly attached to the outer wall of the fuel cell engine 1, so that the fuel cell engine 1 can directly heat the heat transfer mechanism 5. Then, through the liquid reflux mechanism 6, it can be connected to the heat transfer mechanism 5 via the power generation mechanism 3, so that the heated liquid in the heat transfer mechanism 5 can be pumped out, flow through the power generation mechanism 3, and then the liquid flowing through the power generation mechanism 3 is pumped out for cooling and finally refluxed and transported back to the heat transfer mechanism 5 to form a cycle, which can not only cool the fuel cell engine 1 but also recover the heat energy dissipated by the fuel cell engine 1. Since the liquid and gas flowing through the bottom surface of the power generation mechanism 3 will heat the bottom surface of the power generation mechanism 3, the bottom of the power generation mechanism 3 will be very hot, while the temperature of the upper surface of the power generation mechanism 3 is low, so that a certain temperature difference is formed between the upper and lower surfaces of the power generation mechanism 3, which is convenient for the power generation mechanism 3 to generate electricity, achieving the conversion of heat energy into electrical energy and playing a role in recovering heat energy;

[0068] Through the collection cover 21 in the heat collection mechanism 2, it can be fixed to the outer wall of the fuel cell engine 1 via the fixing piece 24 and connected to one of the input ends of the power generation mechanism 3 via the air duct 22, so that the hot air can be conducted to the bottom of the power generation mechanism 3 and then heat the bottom of the power generation mechanism 3. Through the hollow tray 23, the flowing hot air can be filtered to prevent foreign objects from entering the power generation mechanism 3;

[0069] Through the positioning frame 31 in the power generation mechanism 3, two thermoelectric generation chips 32 can be installed and fixed. Then, the two thermoelectric generation chips 32 can be respectively installed with corresponding heat conduction components 33 and heat dissipation components 34. Then, the two heat conduction components 33 are respectively connected to the heat collection mechanism 2 and the heat transfer mechanism 5, so that the heat generated by the fuel cell engine 1 can be recovered doubly. And by heating the two heat conduction components 33, the bottom surfaces of the two thermoelectric generation chips 32 can be made very hot. At the same time, through the two heat dissipation components 34, the top surfaces of the two thermoelectric generation chips 32 can be dissipated, so that a temperature difference is formed between the upper and lower surfaces of the two thermoelectric generation chips 32, which is convenient for the thermoelectric generation chips 32 to generate thermoelectric power. Through the first aluminum plate 331 in the heat conduction component 33, the flow pipe 332 can be installed and the heat in the flow pipe 332 can be conducted. Through the flow pipe 332, hot air or hot circulating water can be circulated;

[0070] Through the second aluminum plate 341 in the heat dissipation component 34, it can be installed on the top surface of the thermoelectric generator 32 and can also install a plurality of heat dissipation rods 342. Through the plurality of heat dissipation rods 342, the heat conducted on the second aluminum plate 341 can be dissipated, so as to quickly cool the second aluminum plate 341. Furthermore, the temperature of the second aluminum plate 341 and the first aluminum plate 331 can be made different, forming a certain temperature difference. Through the cage 343 and a plurality of columns 344, a stable foundation can be provided for the plurality of heat dissipation rods 342, and thus the stability of the use of the plurality of heat dissipation rods 342 can be improved; Through the exhaust pipe 41 in the gas pumping mechanism 4, it can be connected to the flow pipe 332 for circulating gas, so that the hot gas in the flow pipe 332 can be pumped out by the air pump 42;

[0071] Through the metal ring 51 in the heat transfer mechanism 5, it can be installed on the outer wall surface of the fuel cell engine 1 and can also install a plurality of metal boxes 52. At the same time, the metal ring 51 can transfer the heat conducted by the fuel cell engine 1 to the metal boxes 52, so as to heat the metal boxes 52. Then, through the liquid inlet pipe 53, a liquid reflux mechanism 6 can be externally connected, so that the circulating liquid can flow through the metal boxes 52, and then the circulating liquid can flow through the liquid outlet pipe 54 into the flow pipe 332 for circulating liquid, so as to heat the corresponding first aluminum plate 331;

[0072] Through the liquid extraction pipe 61 in the liquid reflux mechanism 6, it can be conductively connected to the output end of the flow pipe 332 opposite to the liquid outlet pipe 54. Through the liquid infusion pump 62, the circulating liquid in the metal box 52 can be pumped into the flow pipe 332 for circulating liquid, so as to heat the flow pipe 332. Then, the liquid is pumped into the fin radiator 63. Through the fin radiator 63, the circulating liquid can be cooled and the cooled circulating liquid can be transported through the reflux pipe 64 to the liquid inlet pipe 53, so as to form a cycle, facilitating the circulation of the circulating liquid.

[0073] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A heat energy recovery device for a hydrogen fuel cell engine, comprising a fuel cell engine (1), characterized in that: It further includes: A heat collection mechanism (2), the heat collection mechanism (2) is inserted on the top of the fuel cell engine (1), and the bottoms of both side walls of the heat collection mechanism (2) are connected to both side walls of the fuel cell engine (1), and the heat collection mechanism (2) is used to collect the thermal energy dissipated by the fuel cell engine (1); A power generation mechanism (3), the power generation mechanism (3) is arranged on one side of the fuel cell engine (1), and one input end of the power generation mechanism (3) is conductively connected to the output end of the heat collection mechanism (2), and the power generation mechanism (3) is used to convert the thermal energy conveyed by the heat collection mechanism (2); A gas pumping mechanism (4), the gas pumping mechanism (4) is arranged on one side of the power generation mechanism (3), and the input end of the gas pumping mechanism (4) is connected to the output end corresponding to the heat collection mechanism (2) on the power generation mechanism (3), and the gas pumping mechanism (4) is used to pump out the gas flowing through the power generation mechanism (3) by the heat collection mechanism (2); A heat transfer mechanism (5), the heat transfer mechanism (5) is sleeved on the outside of the fuel cell engine (1), and the outer wall of the heat transfer mechanism (5) is connected to the inner wall of the heat collection mechanism (2), and at the same time the output end of the heat transfer mechanism (5) is conductively connected to another input end of the power generation mechanism (3), and the heat transfer mechanism (5) is used to directly conduct the thermal energy dissipated outside the fuel cell engine (1) and conduct the thermal energy into the power generation mechanism (3); And A liquid reflux mechanism (6), the liquid reflux mechanism (6) is arranged on one side of the power generation mechanism (3), and the input end of the liquid reflux mechanism (6) is connected to the output end corresponding to the heat transfer mechanism (5) on the power generation mechanism (3), and at the same time the output end of the liquid reflux mechanism (6) is conductively connected to the input end of the heat transfer mechanism (5).

2. The heat energy recovery device for a hydrogen fuel cell engine according to claim 1, wherein: The heat collection mechanism (2) includes a collection cover (21), a gas guide pipe (22) is inlaid and connected to the top end of the collection cover (21), and the output end of the gas guide pipe (22) is conductively connected to one input end of the power generation mechanism (3); Fixed pieces (24) are arranged at the bottoms of both side walls of the inner cavity of the collection cover (21), and one side of the fixed piece (24) is connected to the outer wall of the fuel cell engine (1).

3. The thermal energy recovery device for a hydrogen fuel cell engine according to claim 2, wherein: The heat collection mechanism (2) further includes a hollowed-out tray (23) arranged at the top of the inner cavity of the collection cover (21) and at the position of the input end of the gas guide pipe (22).

4. The thermal energy recovery device for a hydrogen fuel cell engine according to claim 3, characterized in that: The power generation mechanism (3) includes a positioning frame (31), thermoelectric generation sheets (32) are arranged on both sides of the inner cavity of the positioning frame (31), and the thermoelectric generation sheets (32) are used to generate electricity by using temperature difference so as to be able to convert thermal energy into electric energy for recovery; A heat conduction component (33) is arranged on the bottom surface of each thermoelectric generation sheet (32), and the heat conduction component (33) is used to conduct heat to the bottom surface of the thermoelectric generation sheet (32); Meanwhile, a heat dissipation component (34) is provided on the top surface of each thermoelectric power generation sheet (32), and the heat dissipation component (34) is used to dissipate heat from the upper surface of the thermoelectric power generation sheet (32).

5. A thermal energy recovery device for a hydrogen fuel cell engine according to claim 4, characterized in that: The heat conduction component (33) includes a first aluminum plate (331) provided on the bottom surface of the thermoelectric power generation sheet (32) and a flow-through pipe (332) provided on the bottom surface of the first aluminum plate (331), and the flow-through pipe (332) is used to circulate hot air or hot circulating water.

6. The thermal energy recovery device for a hydrogen fuel cell engine according to claim 5, characterized in that: The heat dissipation component (34) includes a second aluminum plate (341) provided on the top surface of the thermoelectric power generation sheet (32), and a plurality of heat dissipation rods (342) are provided on the top surface of the second aluminum plate (341). The heat dissipation rods (342) are used to cooperate with the second aluminum plate (341) to quickly cool the top surface of the thermoelectric power generation sheet (32), so that a temperature difference is formed between the upper and lower surfaces of the thermoelectric power generation sheet (32); The middle lower positions of the plurality of heat dissipation rods (342) are connected by a cage (343), and the bottom surface of the cage (343) is connected to the top surface of the second aluminum plate (341) through a plurality of columns (344).

7. A heat energy recovery device for a hydrogen fuel cell engine according to claim 5, characterized in that: The gas pumping mechanism (4) includes an exhaust pipe (41), a gas pump (42) is provided in the middle of the exhaust pipe (41), and one end of the exhaust pipe (41) is conductively connected to the output end of one of the flow-through pipes (332).

8. The heat energy recovery device of a hydrogen fuel cell engine according to claim 5, characterized in that: The heat transfer mechanism (5) includes a metal ring (51) sleeved on the outer wall surface of the fuel cell engine (1), and a plurality of metal boxes (52) are annularly arranged on the outer wall of the metal ring (51). The metal boxes (52) are used to hold heat-conducting heat, and the bottom surfaces of the plurality of metal boxes (52) are conductively connected through a liquid inlet pipe (53), and one end of the liquid inlet pipe (53) is conductively connected to the output end of the liquid reflux mechanism (6); The top surfaces of the plurality of metal boxes (52) are conductively connected through a liquid outlet pipe (54), and the output end of the liquid outlet pipe (54) is conductively connected to the input end of another one of the flow-through pipes (332).

9. A heat energy recovery device for a hydrogen fuel cell engine according to claim 8, characterized in that: The liquid reflux mechanism (6) includes a liquid extraction pipe (61), one end of the liquid extraction pipe (61) is conductively connected to the output end of the flow-through pipe (332) corresponding to the liquid outlet pipe (54), the other end of the liquid extraction pipe (61) is provided with a fin radiator (63), and the output end of the fin radiator (63) is conductively connected to the liquid inlet pipe (53) through a reflux pipe (64); A liquid infusion pump (62) is connected in series in the middle of the liquid extraction pipe (61).

10. A heat energy recovery device for a hydrogen fuel cell engine according to claim 3, characterized in that: A filter cotton is provided in the inner cavity of the hollowed-out tray (23), and the filter cotton is used to filter the air flowing through.

Images