A waste heat utilization auxiliary heating vehicle heater based on thermoelectric power generation

Abstract

This invention belongs to the technical field of auxiliary vehicle heaters utilizing waste heat from thermionic power generation, and specifically relates to an auxiliary vehicle heater based on thermionic power generation. The heater is used for auxiliary heating during engine startup in engineering vehicles such as transport trucks and lorries. During the combustion process in the heater, not all the heat from fuel combustion is converted into heat in the circulating water, resulting in heat energy loss. This invention designs a heater based on thermionic power generation that utilizes the waste heat from the combustion chamber outlet to reheat the circulating water. This invention reuses the waste heat generated at the outlet by using thermionic power to convert the thermal energy of the waste heat into electrical energy, which is then used to reheat the circulating water through an electric heating mantle, thus improving the heat conversion efficiency of the heater.

Description

Technical Field

[0001] This invention belongs to the technical field of auxiliary vehicle heaters that utilize waste heat from thermionic power generation, and specifically relates to an auxiliary vehicle heater that utilizes waste heat from thermionic power generation. Technical Background

[0002] The heater is used for auxiliary heating during engine startup in engineering vehicles such as transport trucks and lorries. Its function is to prevent engine startup failure in low-temperature environments and to reduce preheating time. During the combustion process in the heater, not all the heat from fuel combustion is converted into heat for the circulating water, resulting in heat loss. This invention, based on thermoelectronic design, utilizes the waste heat from the combustion chamber outlet to provide auxiliary heating for the circulating water, thus improving the heater's efficiency. Summary of the Invention

[0003] This invention is a waste heat recovery vehicle heater based on thermionic power generation, comprising an inlet (1), an outlet (2), an air inlet (3), an air outlet (4), a pump oil pipe (5), a combustion chamber (6), a heat exchange chamber (7), an electric heating jacket (8), a fuel evaporation mesh (9), an ignition plug (10), an outer P-type semiconductor (11), an outer N-type semiconductor (12), an inner N-type semiconductor (13), and an inner P-type semiconductor (14). Circulating water enters through the inlet (1), flows around the heat exchange chamber, and then to the outlet (2). Air enters the combustion chamber (6) through the air inlet (3). Simultaneously, the pump oil pipe (5) pumps fuel onto the fuel evaporation mesh (9), which, via the ignition plug (10), burns in the combustion chamber (6). The combustion gases raise the temperature of the heat exchange chamber (7), heating the circulating water outside the heat exchange chamber. The combustion gases are then discharged from the air outlet (4). The combustion gases raise the temperature of the air outlet (4), creating a temperature difference with the external environment and the air inlet (3). The inner P-type semiconductor (14) contacts the air inlet, the outer P-type semiconductor (11) contacts the external environment, and the inner N-type semiconductor (13) and outer N-type semiconductor (12) contact the air outlet (4). The inner and outer connecting wires (16) connect the outer N-type semiconductor (12) and the inner P-type semiconductor (14). The positive electrode wire (17) and the negative electrode wire (18) connect the outer P-type semiconductor (11) and the inner N-type semiconductor (13) to the external load electric heating jacket (8), forming a circuit loop. The generated thermoelectric potential is enough to drive the electric heating jacket (8) to heat up, converting the thermoelectric potential energy back into electrical energy to reheat the circulating water.

[0004] Based on the insufficient heat conversion efficiency of the heater, the present invention reuses the waste heat generated by the air outlet (4), uses thermionic energy to convert the heat energy of the waste heat into electrical energy, and uses the electrical energy to reheat the circulating water through the electric heating jacket, thereby improving the heat conversion efficiency of the heater. Attached Figure Description

[0005] Figure 1 A schematic diagram of an auxiliary heat heater for vehicles that utilizes waste heat from thermionic power generation.

[0006] Figure 2 Left view of a vehicle heater that utilizes waste heat from thermionic power generation.

[0007] 1. Water inlet, 2. Water outlet, 3. Air inlet, 4. Air outlet, 5. Oil pump pipe, 6. Combustion chamber, 7. Heat exchange chamber

[0008] 8. Electric heating jacket, 9. Fuel evaporation mesh, 10. Ignition plug, 11. Outer P-type semiconductor, 12. Outer N-type semiconductor, 13. Inner N-type semiconductor, 14. Inner P-type semiconductor, 15. Heater shell, 16. Inner and outer connecting wires, 17. Positive electrode wire, 18. Negative electrode wire. Detailed Implementation

[0009] A waste heat recovery vehicle heater based on thermionic power generation utilizes the combustion gases to raise the temperature of the air outlet (4), creating a temperature difference with the external environment and the air inlet (3). The inner P-type semiconductor (14) contacts the air inlet, while the outer P-type semiconductor (11) contacts the external environment, resulting in a relatively low temperature. The inner N-type semiconductor (13) and the outer N-type semiconductor (12) contact the air outlet (4), resulting in a relatively high temperature. A layer of thermionic material is distributed in both the inner and outer layers of the air outlet (4). Thermionic material is a PN junction semiconductor material that is easily excited by heat. The inner N-type semiconductor (13) and the outer N-type semiconductor (12) are close to the air outlet (4) pipe, while the inner P-type semiconductor (14) is close to the air inlet (3), and the P-type semiconductor is close to the external side. According to the characteristics of thermionic semiconductors, a thermoelectric potential can be generated when there is a relative temperature difference between the N-type semiconductor and the P-type semiconductor. Because the temperature generated by combustion creates a high temperature difference between the two sides of the thermionic electrons, electrons in the N-type semiconductor overcome the NP junction interface barrier and enter the P-type semiconductor, thereby generating an electric potential on both sides of the thermionic electrons. The inner and outer layer connecting wires (16) connect the outer N-type semiconductor (12) and the inner P-type semiconductor (14), and the positive electrode wire (17) and the negative electrode wire (18) connect the outer P-type semiconductor (11) and the inner N-type semiconductor (13) to the external load electric heating sleeve (8), forming a circuit loop. By connecting the thermionic electrons on both sides to the electric heating sleeve (8) with wires, the generated thermoelectric potential is enough to drive the electric heating sleeve (8) to heat up, converting the thermoelectric potential energy back into electrical energy to heat the circulating water.

Claims

1. A waste heat recovery auxiliary heating vehicle heater based on thermionic power generation, characterized in that: It consists of a water inlet (1), a water outlet (2), an air inlet (3), an air outlet (4), an oil pump pipe (5), a combustion chamber (6), a heat exchange chamber (7), an electric heating jacket (8), a fuel evaporation mesh (9), an ignition plug (10), an outer P-type semiconductor (11), an outer N-type semiconductor (12), an inner N-type semiconductor (13), and an inner P-type semiconductor (14).

2. The auxiliary vehicle heater based on thermionic power generation for waste heat utilization according to claim 1, characterized in that: The combustion gases will raise the temperature of the air outlet (4). A layer of thermionic material is distributed in the inner and outer layers of the air outlet (4). Thermionic material is a PN junction semiconductor material that is easily excited by heat. The inner N-type semiconductor (13) and the outer N-type semiconductor (12) are close to the air outlet (4) pipe, the inner P-type semiconductor (14) is close to the air inlet (3), and the P-type semiconductor is close to the outside side. Due to the high temperature generated by combustion, a high temperature difference is generated on both sides of the thermionic material. Therefore, the electrons in the N-type semiconductor will overcome the NP junction interface barrier and enter the P-type semiconductor, thereby generating an electric potential on both sides of the thermionic material. The thermionic material on both sides is connected by wires, and an electric heating jacket (8) is put on the outside of the circulating water. The thermionic material on both sides is connected to the electric heating jacket (8) by wires. The electric heating jacket (8) has an electric heating wire. When the thermionic material generates an electric potential, the electric heating jacket (8) will heat up, thereby heating the circulating water.

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