Split liquid-cooled multi-channel parallel flow internal combustion engine exhaust gas waste heat generator

Abstract

The invention discloses a split liquid cooling type multi-channel parallel flow internal combustion engine exhaust gas waste heat generator which comprises a trapezoidal pipeline, a split type multi-channel parallel flow central independent generator set and a split type liquid cooling heat dissipation module. According to the trapezoidal ventilation pipeline, a cylindrical air inlet pipe is arranged on the corresponding face of the trapezoidal bottom edge, square gas flow dividing holes are formed in the corresponding face of the trapezoidal bevel edge, and the square gas flow dividing holes are spaced differentially. The split type multi-channel parallel flow central independent generator set is a single small generator set which is composed of a central ventilation pipeline and a thermoelectric module and operates independently. The split type liquid cooling heat dissipation module is an efficient heat dissipation module composed of various flow dividing pipelines and a heat dissipation water tank. According to the split type central independent generator set, a trapezoid ventilation pipeline is designed, the size and the inclination angle of each side of a specific trapezoid are set, the split type multi-channel parallel flow power generation module is designed, and heat dissipation, ventilation and power generation of each split type central independent generator set are independently carried out.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature difference power generation devices, and in particular to a split liquid-cooled multi-channel parallel flow internal combustion engine exhaust gas waste heat generator. Background Art

[0002] With the tremendous development of society and economy, internal combustion engines that directly convert the internal energy of fossil energy into mechanical energy are widely used to drive vehicles such as cars, ships, and trains. However, the conversion efficiency of internal combustion engines for fossil energy has remained at 40% for many years, and most of the energy is discharged into the atmosphere in the form of waste heat. In recent years, researchers have proposed a number of improvement measures to address this problem, such as exhaust gas recirculation, exhaust gas Rankine cycle, and exhaust gas temperature difference power generation. Among them, the thermoelectric generator used in the exhaust gas temperature difference power generation technology has the advantages of simple and compact structure, no noise during operation, and light weight. It is a potential choice for improving the efficiency of internal combustion engines in small cars.

[0003] The basic principle of the exhaust gas temperature difference generator is the Seebeck effect: two metals connected together will generate electromotive force under the temperature difference. Therefore, the common thermoelectric generator has three basic components: a heat exchanger for capturing heat from the exhaust gas, a thermoelectric module for converting heat into electrical energy, and a cooling device for removing excess heat and forming a temperature difference. The core of the exhaust gas temperature difference power generation technology is to optimize these three components.

[0004] The heat exchanger of the exhaust gas temperature difference generator is usually a separate ventilation pipe. The exhaust gas transfers heat to the temperature difference power generation plate through this pipe. Such a structure will cause the exhaust gas temperature to gradually decrease in the process of flowing in the pipe, and the flow rate is uneven. When it reaches the rear end of the pipe, there is not enough heat to generate electricity. At the same time, the positions on both sides of the pipe away from the air inlet cannot meet the corresponding temperature requirements to generate electricity. To solve this problem, only changing the length of the pipe will not only further reduce the power generation, but also fail to fully utilize the heat. Therefore, it is necessary to optimize this device and change the ventilation and diversion structure of the power generation module at the same time.

[0005] Exhaust temperature difference generators usually use an integrated water cooling device or a co-cooling device to dissipate heat for dozens of thermoelectric modules. The cooling water will first cool the front row of modules in the cooling device before flowing to the rear. At this time, the cooling water has been heated by the front module and cannot guarantee the cooling effect of the rear module, which causes the rear module to generate less electricity due to insufficient temperature difference, and the heat dissipation effect of the cooling device is poor. To address this problem, if the cooling water flow rate is simply increased, the water resistance of the system will inevitably increase due to the increase in water volume, and the water pump power required by the system will increase, thereby reducing the net power output of the entire system. Therefore, it is necessary to optimize the design of the cooling device of the thermoelectric generator. Summary of the invention

[0006] The purpose of the present invention is to provide a split liquid-cooled multi-channel parallel flow internal combustion engine exhaust gas waste heat generator, which is used to solve the problem that the heat of traditional thermoelectric generators cannot be fully utilized and the heat dissipation is insufficient, resulting in high power generation efficiency and low cost. The split multi-channel parallel flow central independent generator set allows the temperature of the gas to be basically the same when it enters each central ventilation duct. When the exhaust gas passes through each central ventilation duct, the temperature, flow rate and other states of the gas at the same position of each unit are basically the same, so that the heat transfer efficiency of each thermoelectric module is basically the same, and the working state of the thermoelectric module is the same, which improves the utilization rate of the exhaust gas heat and the thermoelectric power generation sheet, thereby improving the power generation efficiency and saving material costs. The split liquid cooling heat dissipation module is divided into multiple partitions, and multiple flow control valves are set to control the appropriate liquid flow and flow rate, reduce the temperature difference between various parts of the water tank, reduce refrigeration energy consumption, achieve high efficiency and energy saving, set a serpentine liquid pipeline, increase the heat dissipation area, and improve the heat dissipation efficiency. At the same time, the design of the split multi-channel parallel flow generator set and the trapezoidal ventilation duct reduces the volume of the generator set.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A split liquid-cooled multi-channel parallel flow internal combustion engine exhaust gas waste heat generator, comprising a trapezoidal ventilation duct, a plurality of split multi-channel parallel flow central independent generator sets, a split liquid-cooled heat dissipation module and a total connection bolt, wherein each group of the split multi-channel parallel flow central independent generator sets is formed by two thermoelectric modules, a central ventilation duct and two heat dissipation water tanks connected by the total connection bolts;

[0009] Each heat dissipation water tank is connected to two main water inlet manifolds through eight small water inlet manifolds, and is connected to two main water outlet pipes and a water outlet confluence pipe through two small water outlet pipes to form a split liquid cooling module;

[0010] A plurality of parallel-arranged split multi-channel parallel-flow central independent generator sets are connected with a trapezoidal air inlet duct and a trapezoidal air outlet duct by bolts to form a complete generator;

[0011] The split multi-channel parallel flow central independent generator set is installed between the trapezoidal air inlet duct and the trapezoidal air outlet duct. The air inlet and the air outlet of the central ventilation duct of the split multi-channel parallel flow central independent generator set are respectively connected to the square gas diversion holes of the trapezoidal air inlet duct and the trapezoidal air outlet duct. Each square gas diversion hole on the trapezoidal air inlet duct and the trapezoidal air outlet duct corresponds to a split multi-channel parallel flow central independent generator set; the dimensions of the trapezoidal air inlet duct and the trapezoidal air outlet duct are all fixed values.

[0012] As a further solution of the present invention: square gas diversion holes with differentiated spacing are arranged on the corresponding surfaces of the hypotenuse of the trapezoidal ventilation duct.

[0013] As a further solution of the present invention: the central ventilation duct has a high-density heat-absorbing fin group and a low-density heat-absorbing fin group inside, and the two largest external surfaces are provided with grooves with a thickness of one-third of the thermoelectric module to place the thermoelectric module.

[0014] As a further solution of the present invention: a split serpentine liquid channel is arranged inside the heat dissipation water tank, which is divided into four parts in total, each part corresponds to two water inlets and one water outlet, so as to reduce the temperature difference of the liquid in various places in the water tank, and grooves with a thickness of one-third of the thermoelectric module are arranged on the two largest external surfaces, which cooperate with the external grooves of the central ventilation duct to place the thermoelectric module, thereby ensuring that the cold end of the thermoelectric module is not in contact with the hot end, thereby reducing heat transfer from the hot end to the cold end.

[0015] As a further solution of the present invention: the trapezoidal air intake duct is provided with a cylindrical air intake pipe on the surface corresponding to the bottom edge of the trapezoid, and a square gas diversion hole is provided on the surface corresponding to the hypotenuse of the trapezoid. The intervals between the square gas diversion holes gradually increase from the circular air intake pipe to the upper bottom of the trapezoid, and the interior is a hollow structure.

[0016] As a further solution of the present invention: the trapezoidal air outlet duct is provided with a cylindrical air inlet pipe on the surface corresponding to the bottom edge of the trapezoid, and a square gas diversion hole is provided on the surface corresponding to the hypotenuse of the trapezoid. The intervals between the square gas diversion holes gradually decrease from the circular air inlet pipe to the upper bottom of the trapezoid, and the interior thereof is a hollow structure.

[0017] As a further solution of the present invention: the central ventilation duct has internal heat-conducting fins, a high-density heat-absorbing fin group is close to the air inlet, and a low-density heat-absorbing fin group is far away from the air inlet.

[0018] As a further solution of the present invention: the edge of the central ventilation duct is extended and fixed by bolt connection to ensure that the extended portion fits with the bevel surface of the trapezoidal ventilation duct.

[0019] As a further solution of the present invention: the small water inlet diverter pipe is provided with a small flow control valve;

[0020] Four long diversion channels and one total diversion channel are arranged inside the total water inlet diversion pipe, and a total flow control valve is arranged at the water inlet of each long diversion channel;

[0021] As a further solution of the present invention: the small water outlet pipe is provided with two water inlets; the main water outlet pipe is provided with water inlets which is half of the total number of the small water outlet pipes; the water outlet confluence pipe is provided with two water inlets and one water outlet.

[0022] Beneficial effects of the present invention:

[0023] The present invention adopts a trapezoidal air inlet duct, a trapezoidal air outlet duct and a central ventilation duct to replace the single-channel ventilation duct used in the traditional thermoelectric generator, and adopts a multi-channel parallel flow power generation module. The gas passes through the gas diversion hole of the trapezoidal air inlet duct and passes through each split central independent generator set corresponding to the gas diversion hole at the required flow rate and temperature. Because the fixed design of the length of each side of the trapezoidal duct and the inclination angle of the hypotenuse, the temperature of all gases is basically the same when entering each independent power generation module, and the gas cooling conditions are basically the same when passing through each split central independent generator set. At the same time, because the ventilation, power generation and heat dissipation of each split central independent generator set are independent, the working state of each split central independent generator set is not affected by other split central independent generator sets, and the power generation power of the same position of each split central independent generator set is basically the same, which improves the efficiency of thermoelectric power generation and heat utilization. The split-type liquid cooling module is partitioned multiple times inside and has multiple flow control valves to control the appropriate liquid flow and velocity, reduce the temperature difference between different parts of the water tank, reduce refrigeration energy consumption, achieve high efficiency and energy saving, and set up serpentine liquid pipelines to increase the heat dissipation area and improve the heat dissipation efficiency. At the same time, the design of the split-type multi-channel parallel flow generator set and the trapezoidal ventilation pipeline reduces the volume and material cost of the generator set. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the explosion of a split liquid-cooled multi-channel parallel flow internal combustion engine exhaust waste heat generator;

[0026] Figure 2 It is a schematic diagram of the interior of the central ventilation duct;

[0027] Figure 3 It is a schematic diagram of a trapezoidal air inlet duct and a trapezoidal air outlet duct;

[0028] Figure 4 This is the external schematic diagram of the radiator tank;

[0029] Figure 5 This is a schematic diagram of the interior of the radiator tank;

[0030] Figure 6 This is a schematic diagram of the total water inlet manifold;

[0031] Figure 7 It is a schematic diagram of a small water inlet manifold;

[0032] Figure 8 It is a simplified schematic diagram of the heat sink;

[0033] Fig. 9 It is a schematic diagram of a small water outlet pipe;

[0034] Fig.10 This is a schematic diagram of the main water outlet pipe;

[0035] Fig.11 This is a schematic diagram of the outlet confluence pipe;

[0036] Fig.12 It is a simplified assembly diagram of a split liquid-cooled multi-channel parallel-flow internal combustion engine exhaust gas waste heat generator;

[0037] Fig.13 It is a simplified exploded schematic diagram of a split liquid-cooled multi-channel parallel-flow internal combustion engine exhaust waste heat generator;

[0038] Fig.14 It is a schematic diagram of the assembly of a split liquid-cooled multi-channel parallel flow internal combustion engine exhaust gas waste heat generator.

[0039] In the figure: 1. Trapezoidal ventilation duct; 11. Trapezoidal air inlet duct; 12. Trapezoidal air outlet duct; 2. Split multi-channel parallel flow central independent generator set; 21. Central ventilation duct; 22. Thermoelectric module; 23. High-density heat-absorbing fin group; 24. Low-density heat-absorbing fin group; 25. Bolts; 3. Split liquid cooling module; 31. Main water inlet manifold; 32. Main flow control valve; 33. Small water inlet manifold; 34. Small flow control valve; 35. Heat dissipation water tank; 36. Small water outlet pipe; 37. Main water outlet pipe; 38. Water outlet confluence pipe; 4. Main connecting bolts. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-12 As shown, the present invention is a split liquid-cooled multi-channel parallel flow internal combustion engine exhaust gas waste heat generator, including a trapezoidal ventilation duct 1, a split multi-channel parallel flow central independent generator set 22, a split liquid-cooled heat dissipation module 33 and a total connecting bolt 44.

[0042] The thermoelectric modules 22 are interconnected thermoelectric power generation sheets that generate electromotive force by transferring heat, thereby generating electricity.

[0043] The central ventilation duct 21 has a low-density heat-absorbing fin group 24 and a high-density heat-absorbing fin group 23 inside, so that the heat on the hot end surface of the temperature difference power generation sheet is evenly distributed.

[0044] The trapezoidal air intake duct 11 is provided with a cylindrical air intake pipe on the surface corresponding to the bottom side of the trapezoid, and a square gas diversion hole is provided on the surface corresponding to the hypotenuse of the trapezoid. The intervals between the square gas diversion holes gradually increase from the circular air intake pipe to the upper bottom of the trapezoid. The interior is a hollow structure, and the dimensions of all aspects are fixed values, so that the temperature of the exhaust gas entering each split central independent generator set is basically the same, and the temperature changes are basically the same.

[0045] The trapezoidal air outlet duct 12 is provided with a cylindrical air inlet pipe on the surface corresponding to the bottom edge of the trapezoid, and a square gas diversion hole is provided on the surface corresponding to the hypotenuse of the trapezoid. The intervals between the square gas diversion holes gradually decrease from the circular air inlet pipe to the upper bottom of the trapezoid. The interior is a hollow structure, and each of its diversion air outlets corresponds to the outlet of each split central independent generator set for exhaust.

[0046] The split multi-channel parallel flow central independent generator set 2 is installed between the trapezoidal air inlet duct 11 and the trapezoidal air outlet duct 12. The air inlet and air outlet of the central ventilation duct 21 of the split multi-channel parallel flow central independent generator set 2 are respectively connected to the square gas diversion holes of the trapezoidal air inlet duct 11 and the trapezoidal air outlet duct 12. Each square diversion hole on the trapezoidal air inlet duct 11 and the trapezoidal air outlet duct 12 corresponds to a split multi-channel parallel flow central independent generator set 2. Multiple split multi-channel parallel flow central independent generator sets 2 are connected to the trapezoidal air inlet duct 11 and the trapezoidal air outlet duct 12 by bolts.

[0047] The split multi-channel parallel flow central independent generator set 2 is composed of a plurality of split central independent generators arranged in parallel and installed on a trapezoidal air inlet duct 11 and a trapezoidal air outlet duct 12. The multi-channel parallel flow power generation is realized, so that the working state of each split central independent generator set is not affected by other power generation modules, and the power generation power of the same position of each split central independent generator set is basically the same, which improves the efficiency of temperature difference power generation sheet and heat utilization and reduces the volume of the entire generator.

[0048] The split type central independent generator set is formed by arranging a heat sink 35, a thermoelectric module 22, and a central ventilation pipe 21 in sequence, which is easy to assemble.

[0049] The central ventilation duct 21 has internal heat-conducting fins, a low-density heat-absorbing fin group 24 close to the air inlet, and a high-density heat-absorbing fin group 23 far away from the air inlet, so that the heat absorption is more uniform and sufficient.

[0050] The edge of the central ventilation duct 21 is extended and fixed by bolts to ensure that the extended portion fits with the beveled surfaces of the trapezoidal air inlet duct 11 and the trapezoidal air outlet duct 12 to ensure air tightness.

[0051] A split serpentine liquid channel is arranged inside the heat dissipation water tank 35, which is divided into four parts in total, each part corresponds to two water inlets and one water outlet, so as to reduce the temperature difference of the liquid in various places in the water tank, reduce the refrigeration energy consumption, and achieve high efficiency and energy saving; the two largest external surfaces are provided with grooves of one-third of the thickness of the thermoelectric module 22, which are matched with the external groove of the central ventilation duct 21 to place the thermoelectric module 22, ensuring that the cold end of the thermoelectric module 22 is not in contact with the hot end, reducing the heat transfer from the hot end to the cold end, improving the power generation efficiency, and extending the life of the temperature difference power generation sheet.

[0052] The small water inlet manifold 33 is provided with a small flow control valve 34 to control the flow rate and flow velocity of the liquid in each area of ​​the heat dissipation water tank 35, thereby reducing the temperature difference between each area of ​​the water tank and achieving efficient heat dissipation.

[0053] Four long diversion channels and one total diversion channel are arranged inside the total water inlet diversion pipe 31. A total flow control valve 32 is arranged at the water inlet of each long diversion channel to control the liquid flow rate entering each long diversion channel to be appropriate, thereby controlling the liquid flow rate at each water inlet of the small water inlet diversion pipe 33, so as to facilitate the control of the liquid flow rate and flow rate entering the heat dissipation water tank 35.

[0054] The small water outlet pipe 36 is provided with two water inlets, which reduces the consumables of the water outlet pipe and the reabsorption of liquid energy after heat absorption, and reduces the refrigeration energy consumption. At the same time, the liquid in the small water outlet pipe 36 flows in the direction of gravity, which reduces the energy consumption of the water pump.

[0055] The main water outlet pipe 37 is provided with water inlets which are half the total number of the small water outlet pipes 36 , and drainage can be completed by installing two main water outlet pipes 37 , which has a simple structure and reduces consumables.

[0056] The water outlet confluence pipe 38 is provided with two water inlets and one water outlet, so as to merge and discharge the liquid, thereby reducing the number of drainage pipes.

[0057] The main components of the present invention include a trapezoidal ventilation duct 1, a split multi-channel parallel flow central independent generator set 2, a split liquid cooling heat dissipation module 3, and a total connection bolt 4. Other components include a trapezoidal air intake duct 11, a trapezoidal air outlet duct 12, a split central ventilation duct 21, a thermoelectric module 22, a high-density heat-absorbing fin group 23, a low-density heat-absorbing fin group 24, a bolt 25, a total water inlet manifold 31, a total flow control valve 32, a small water inlet manifold 33, a small flow control valve 34, a heat dissipation water tank 35, a small water outlet pipe 36, a total water outlet pipe 37, and a water outlet confluence pipe 38. The thermoelectric module 22 is firstly pasted together with the central ventilation duct 21 and the heat dissipation water tank 35 with thermal conductive silicone grease, and then the total connection bolt 4 is passed through each central ventilation duct 21 and fixed and clamped with a nut to form the required split multi-channel parallel flow central independent generator set 2. A split-type central independent generator set 2 is placed parallel to the gas diversion holes corresponding to the trapezoidal air inlet duct 11 and the trapezoidal air outlet duct 12. The high-density fin group 23 in the duct corresponds to the air outlet, and the low-density fin group 24 in the duct corresponds to the air inlet. The trapezoidal air inlet duct 11, the trapezoidal air outlet duct 12 and the split-type multi-channel parallel flow central independent generator set 2 are connected by bolts 25. The air inlet and air outlet of the central ventilation duct of the split-type multi-channel parallel flow central independent generator set 2 are connected to the square gas diversion holes of the trapezoidal air inlet duct 11 and the trapezoidal air outlet duct 12 accordingly. A small water inlet manifold 33 is installed at each water inlet of the radiator water tank with a nut, the water inlet of the small water inlet manifold 33 is connected to each water outlet of the main water inlet manifold 31 with a nut, a small water outlet pipe 36 is installed at each water outlet with a nut, the water outlet of each small water outlet pipe 36 is connected to the water inlet of the main water outlet pipe 37 with a nut, and the water outlet of each main water outlet pipe 37 is connected to each water inlet of the water outlet confluence pipe 38 with a nut.

[0058] The trapezoidal air intake duct 11 is provided with a cylindrical air intake pipe on the surface corresponding to the bottom edge of the trapezoid, and a square gas diversion hole is provided on the surface corresponding to the hypotenuse of the trapezoid. The intervals between the square gas diversion holes gradually increase from the circular air intake pipe to the upper bottom of the trapezoid. The interior is a hollow structure, and the dimensions of all aspects are fixed values, so that the temperature of the exhaust gas entering the split multi-channel parallel flow central independent generator set 2 is basically the same, and the temperature changes are basically the same.

[0059] The trapezoidal air outlet pipe 12 is a cylindrical air inlet pipe set on the surface corresponding to the bottom edge of the trapezoid, and a square gas diversion hole is set on the surface corresponding to the hypotenuse of the trapezoid. The interval between the square gas diversion holes gradually decreases from the circular air inlet pipe to the upper bottom of the trapezoid, and its interior is a hollow structure. Each gas diversion hole corresponds to the outlet of the split multi-channel parallel flow central independent generator set 2 for exhaust.

[0060] The split multi-channel parallel flow central independent generator set 2 is installed between the trapezoidal air inlet duct 11 and the trapezoidal air outlet duct 12. The air inlet and the air outlet of the central ventilation duct of the split multi-channel parallel flow central independent generator set 2 are respectively connected to the square gas diversion holes of the trapezoidal air inlet duct 11 and the trapezoidal air outlet duct 12. Each square gas diversion hole on the trapezoidal air inlet duct 11 and the trapezoidal air outlet duct 12 corresponds to a split multi-channel parallel flow central independent generator set 2. The split multi-channel parallel flow central independent generator set 2 is connected to the trapezoidal air inlet duct 11 and the trapezoidal air outlet duct 12 by bolts 25.

[0061] The split multi-channel parallel flow central independent generator set 2 is formed by a plurality of split central independent generators arranged in parallel and installed on a trapezoidal air inlet duct 11 and a trapezoidal air outlet duct 12. The multi-channel parallel flow power generation is realized, so that the working state of the split central independent generator set is not affected by other power generation modules, and the power generation power of the same position of each split central independent generator set is basically the same, which improves the efficiency of temperature difference power generation sheet and heat utilization and reduces the volume of the entire generator.

[0062] The split type central independent generator set is formed by arranging a heat sink, a thermoelectric module, and a central ventilation duct in sequence, which is convenient for assembly.

[0063] The central ventilation duct 21 has internal heat-conducting fins, a low-density heat-absorbing fin group 24 close to the air inlet, and a high-density heat-absorbing fin group 23 far away from the air inlet, so that the heat absorption is more uniform and sufficient.

[0064] The edge of the central ventilation duct 21 is extended and fixed by bolts 25 to ensure that the extended portion fits with the bevel surface of the trapezoidal ventilation duct to ensure air tightness.

[0065] A split serpentine liquid channel is arranged inside the heat dissipation water tank 35, which is divided into four parts in total, each part corresponds to two water inlets and one water outlet, so as to reduce the temperature difference of the liquid in various places in the water tank, reduce the refrigeration energy consumption, and achieve high efficiency and energy saving; the two largest external surfaces are provided with grooves of one-third of the thickness of the thermoelectric module 22, which are matched with the external groove of the central ventilation duct 21 to place the thermoelectric module 22, so as to ensure that the cold end of the thermoelectric module is not in contact with the hot end, reduce the heat transfer from the hot end to the cold end, improve the power generation efficiency, and extend the life of the thermoelectric power generation sheet.

[0066] The small water inlet manifold 33 is provided with a small flow control valve to control the flow rate and flow velocity of the liquid in each area of ​​the heat dissipation water tank 35, thereby reducing the temperature difference between each area of ​​the heat dissipation water tank 35 and achieving efficient heat dissipation.

[0067] Four long diversion channels and one total diversion channel are arranged inside the total water inlet diversion pipe 31. A total flow control valve 32 is arranged at the water inlet of each long diversion channel to control the liquid flow rate entering each long diversion channel to be appropriate, thereby controlling the liquid flow rate at each water inlet of the small water inlet diversion pipe 33, so as to facilitate the control of the liquid flow rate and flow rate entering the heat dissipation water tank 35.

[0068] The small water outlet pipe 36 is provided with two water inlets, which reduces the consumables of the water outlet pipe and the reabsorption of liquid energy after heat absorption, and reduces the refrigeration energy consumption. At the same time, the liquid in the small water outlet pipe 36 flows in the direction of gravity, which reduces the energy consumption of the water pump.

[0069] The main water outlet pipe 37 is provided with water inlets which are half the total number of the small water outlet pipes. The drainage can be completed by installing two main water outlet pipes, which has a simple structure and reduces consumables.

[0070] The water outlet confluence pipe 38 is provided with two water inlets and one water outlet, so as to merge and discharge the liquid, thereby reducing the number of drainage pipes.

[0071] The working principle of the present invention is as follows: exhaust gas is introduced into the trapezoidal air intake duct 11, and the exhaust gas enters the split multi-channel parallel flow central independent generator set 2 through the square gas diversion holes on the hypotenuse surface of the trapezoidal air intake duct 11, passes through each split central independent generator set, passes through the central ventilation duct 21, and is then discharged from the trapezoidal air outlet duct 12. Heat is transferred to the heat dissipation water tank 35 through the central ventilation duct 21, the low-density heat-absorbing fin group 24, the high-density heat-absorbing fin group 23, the thermoelectric module 22, and the thermal conductive silicone grease for heat dissipation.

[0072] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A split liquid-cooled multi-channel parallel flow internal combustion engine exhaust gas waste heat generator, characterized in that: It comprises a trapezoidal ventilation duct (1), a multi-group split multi-channel parallel flow central independent generator set (2), a split liquid cooling heat dissipation module (3) and a main connection bolt (4), wherein each group of the split multi-channel parallel flow central independent generator set (2) is formed by connecting two thermoelectric modules (22), a central ventilation duct (21) and two heat dissipation water tanks (35) via the main connection bolt (4); Each heat dissipation water tank (35) is connected to two main water inlet shunt pipes (31) via eight small water inlet shunt pipes (33), and is connected to two main water outlet pipes (37) and a water outlet confluence pipe (38) via two small water outlet pipes (36) to form a split-type liquid cooling heat dissipation module (3); A plurality of parallel-arranged split-type multi-channel parallel-flow central independent generator sets (2) are connected to a trapezoidal air inlet duct (11) and a trapezoidal air outlet duct (12) via bolts (25) to form a complete generator.

2. A split liquid-cooled multi-channel parallel flow internal combustion engine exhaust heat generator according to claim 1, characterized in that: The corresponding surface of the hypotenuse of the trapezoidal ventilation duct (1) is provided with square gas diversion holes with differentiated spacing.

3. The split liquid-cooled multi-channel parallel flow internal combustion engine exhaust heat generator according to claim 1, characterized in that: The central ventilation duct (21) has a high-density heat-absorbing fin group (23) and a low-density heat-absorbing fin group (24) inside, and two largest external surfaces are provided with grooves with a thickness of one-third of the thermoelectric module (22) for placing the thermoelectric module (22).

4. The split liquid-cooled multi-channel parallel flow internal combustion engine exhaust heat generator according to claim 1, characterized in that: The heat dissipation water tank (35) is provided with a split serpentine liquid channel inside, which is divided into four parts in total, each part corresponding to two water inlets and one water outlet, and the two largest external surfaces are provided with grooves with a thickness of one-third of the thermoelectric module (22) to place the thermoelectric module (22).

5. The split liquid-cooled multi-channel parallel flow internal combustion engine exhaust waste heat generator according to claim 1, characterized in that: The trapezoidal air intake duct (11) is provided with a cylindrical air intake pipe on the surface corresponding to the bottom edge of the trapezoid, and a square gas diversion hole is provided on the surface corresponding to the hypotenuse of the trapezoid. The intervals between the square gas diversion holes gradually increase from the circular air intake pipe to the upper bottom of the trapezoid, and the interior thereof is a hollow structure.

6. The split liquid-cooled multi-channel parallel flow internal combustion engine exhaust heat generator according to claim 1, characterized in that: The trapezoidal air outlet duct (12) is provided with a cylindrical air inlet pipe on the surface corresponding to the bottom edge of the trapezoid, and a square gas diversion hole is provided on the surface corresponding to the hypotenuse of the trapezoid. The intervals between the square gas diversion holes gradually decrease from the circular air inlet pipe to the upper bottom of the trapezoid, and the interior thereof is a hollow structure.

7. The split liquid-cooled multi-channel parallel flow internal combustion engine exhaust heat generator according to claim 1, characterized in that: The central ventilation duct (21) has internal heat-conducting fins, a high-density heat-absorbing fin group (23) close to the air inlet, and a low-density heat-absorbing fin group (24) far from the air inlet.

8. The split liquid-cooled multi-channel parallel flow internal combustion engine exhaust heat generator according to claim 1, characterized in that: The edge of the central ventilation duct (21) is extended and fixed by bolts (25) to ensure that the extended portion fits the bevel surface of the trapezoidal ventilation duct (1).

9. The split liquid-cooled multi-channel parallel flow internal combustion engine exhaust heat generator according to claim 1, characterized in that: The small water inlet diverter pipe (33) is provided with a small flow control valve (34); Four long diversion channels and one main diversion channel are arranged inside the main water inlet diversion pipe (31), and a main flow control valve (32) is arranged at the water inlet of each long diversion channel.

10. The split liquid-cooled multi-channel parallel flow internal combustion engine exhaust heat generator according to claim 1, characterized in that: The small water outlet pipe (36) is provided with two water inlets; the main water outlet pipe (37) is provided with one-half of the total number of water inlets of the small water outlet pipes (36); and the water outlet confluence pipe (38) is provided with two water inlets and one water outlet.

Images