Gas heater for vehicle
By setting up a vent pipe in the automotive gas heater, air is introduced to promote the nitrogen oxide reaction, and pollution and energy waste caused by incomplete combustion are solved, and more efficient combustion and heating effects are achieved.
Patent Information
- Application Number
- CN202411543705.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2024-12-31
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Traditional automotive gas heaters have problems of incomplete combustion during combustion, resulting in pollutant emissions and energy waste, affecting the heating effect and equipment life of the vehicle.
An automotive gas heater is designed. By setting a ventilator in the combustion chamber, the ventilator is penetrated with air to promote the reaction of incompletely burned nitrogen oxides with oxygen, reduce pollutant emissions, and improve energy utilization efficiency.
It significantly reduces nitrogen oxide emissions, improves energy utilization efficiency, stabilizes the combustion process, extends the equipment life, and improves the heating effect and comfort in the vehicle.
Smart Images
Figure CN119222564A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of automobile accessories, and in particular to a vehicle gas heater. Background Art
[0002] With the continuous development of the automobile industry and the increasing requirements for vehicle comfort and environmental protection, the performance and functions of vehicle gas heaters as an important vehicle-mounted equipment have received more and more attention. Traditional vehicle gas heaters often have some problems in the combustion process, which limits their further application and development.
[0003] In terms of gas combustion, due to the limitations of combustion conditions and the complexity of the combustion process, it is difficult for the gas to be completely burned in the combustion chamber. This will cause the incompletely reacted gas components and the generated nitrogen oxide pollutants such as nitric oxide (NO) and nitrogen dioxide (NO2) to be directly discharged into the external environment. These pollutants not only cause serious pollution to the atmospheric environment and increase the risk of acid rain formation, but also pose a threat to the ecological environment and human health. Especially in the densely populated urban traffic environment, the accumulation of pollutants emitted by a large number of vehicles makes the problem of air quality deterioration more prominent.
[0004] From the perspective of energy utilization, the chemical energy contained in the incompletely burned gas in traditional gas heaters has not been effectively utilized, resulting in energy waste. This not only increases the fuel consumption of the vehicle and increases the operating cost, but also does not conform to the current development trend of energy conservation and environmental protection. In the context of increasingly tight energy, improving energy utilization efficiency has become an urgent problem to be solved in the design of vehicle gas heaters.
[0005] In addition, incomplete combustion can also lead to unstable combustion process, combustion fluctuations, carbon deposits, and unstable flames. These problems not only affect the heating effect of the heater, reduce the heating rate and temperature uniformity in the car, but also shorten the service life of the heater and increase equipment maintenance costs. In cold weather, passengers' demand for a warm environment in the car is more urgent, and the shortcomings of traditional heaters in these aspects are particularly prominent, and they cannot provide passengers with a fast and comfortable heating experience. Summary of the invention
[0006] The present invention provides a vehicle gas heater, which solves the problem of environmental pollution caused by incomplete combustion of gas heaters in the related art.
[0007] The technical solution of the present invention is as follows: A vehicle gas heater, comprising a housing having a mounting cavity, A combustion chamber, wherein the combustion chamber is arranged in the installation chamber, the combustion chamber has a combustion chamber and a thermal reaction chamber, a heat exchange chamber is formed between the combustion chamber and the inner wall of the installation chamber, the combustion chamber leads to the thermal reaction chamber, and the thermal reaction chamber leads to the heat exchange chamber, a burner, the burner being arranged in the combustion chamber and located on one side of the thermal reaction chamber, a vent pipe, the vent pipe leading to the thermal reaction chamber, the vent pipe having an opening, A heat exchanger, wherein the heat exchanger is located in the heat exchange cavity and exchanges heat with the heat exchange cavity. The combustion chamber has an annular baffle, which is located on one side of the thermal reaction chamber. The annular baffle has a through hole. The combustion chamber has a hot gas outlet, which is toward the annular baffle, and the opening is toward the through hole.
[0008] As a further technical solution, the ventilation pipe is a spiral pipe, the ventilation pipe is spirally wound on the inner wall of the heat exchange cavity, and the ventilation pipe has a bending portion, and the bending portion extends from the inner wall of the heat exchange cavity toward the through hole.
[0009] As a further technical solution, it also includes A smoke evacuator, the smoke evacuator is arranged on the housing, the smoke evacuator has a smoke evacuation cavity, the heat exchange cavity leads to the smoke evacuation cavity, a heat exchange tube, the heat exchange tube being connected to the heat exchanger for heat exchange, A preheater, wherein the preheater is arranged on the smoke exhauster for heat exchange, the preheater leads to the heat exchanger, the heat exchanger leads to the heat exchange tube, and the heat exchange tube leads to the preheater.
[0010] As a further technical solution, the heat exchanger has an annular heat exchange part and a planar heat exchange part, the through hole faces the planar heat exchange part, the annular heat exchange part is located at the wall of the heat exchange cavity, and the planar heat exchange part is located at the end of the annular heat exchange part.
[0011] As a further technical solution, it also includes The baffle is obliquely arranged on the planar heat exchange portion, and a plurality of baffles are arranged in an array. An annular baffle is arranged on the planar heat exchange portion, the baffle closest to the annular heat exchange portion is connected to the annular baffle, and an annular channel is formed between the annular baffle and the inner wall of the installation cavity.
[0012] As a further technical solution, the baffle has a notch, and the notch is arranged in a plurality of rows. The annular baffle has an outlet, and the outlet is arranged in a plurality of circles. The outlet leads to the annular channel, and the baffle is a twisted structure.
[0013] As a further technical solution, it also includes A partition is arranged in the annular channel, and the partition is spirally arranged in the annular channel.
[0014] As a further technical solution, it also includes a water pump, the water pump being arranged outside the shell and being in communication with the heat exchange tube to provide power for the heat exchange medium in the heat exchange tube to flow, a fan, the fan being arranged in the installation cavity and being located on a side of the combustion chamber away from the planar heat exchange portion, A mixer is arranged on a side of the fan close to the combustion chamber, and the fan is used for guiding the flow of gas and air.
[0015] As a further technical solution, the thermal reaction chamber is a trumpet-shaped chamber having a large end and a small end, and the combustion chamber leads to the small end.
[0016] As a further technical solution, it also includes An igniter is arranged in the mounting cavity and is used for igniting the burner.
[0017] The working principle and beneficial effects of the present invention are: In the present invention, the vehicle gas heater is mainly composed of a shell, a combustion chamber, a burner, a vent pipe, a heat exchanger and other parts. The shell provides a space for installation and protection for the entire device, and has an installation cavity inside. The combustion chamber is located in the installation cavity, which is the core area for realizing gas combustion and heat exchange. It includes a combustion chamber, a thermal reaction chamber and a heat exchange cavity formed between the two. The burner is arranged in the combustion chamber and is located on one side of the thermal reaction chamber, and is used to spray gas into the combustion chamber for combustion. The vent pipe leads to the thermal reaction chamber. If incompletely reacted gas appears after combustion, the necessary gas for reaction is provided through the vent pipe. The heat exchanger is located in the heat exchange cavity, and heat is exchanged with the heat exchange cavity to achieve heating of the surrounding medium. The annular baffle of the combustion chamber is located on one side of the thermal reaction chamber, and a through hole is provided on the annular baffle. The combustion chamber has a hot gas outlet 1002, and the hot gas outlet 1002 faces the annular baffle, and the opening of the vent pipe also faces the through hole of the annular baffle.
[0018] The design of the vent pipe to introduce air into the hot reaction chamber plays a key role in reducing pollutant emissions. During the combustion of gas, even if the combustion chamber is not fully burned, incompletely reacted nitrogen oxide pollutants such as nitric oxide (NO) and nitrogen dioxide (NO2) will be produced. When air is introduced into the vent pipe, these nitrogen oxides continue to react with oxygen in the high temperature environment of the hot reaction chamber, such as the following reaction: 2NO + O2 → 2NO2, and a series of subsequent complex reactions that may occur, further converting nitrogen oxides into other harmless or less harmful substances, thereby significantly reducing the emission of pollutants to the external environment. This is of great significance for improving the air quality around vehicles, especially in urban traffic environments with dense vehicles, which can reduce the pollution of nitrogen oxides to the atmospheric environment, reduce the risk of acid rain formation, and protect the ecological environment and human health.
[0019] The incompletely reacted nitrogen oxides continue to react with the oxygen introduced in the thermal reaction chamber to release heat, thus further recycling the energy. The chemical energy that might have been lost as pollutant emissions is converted into thermal energy in this way, increasing the total calorific value of the heater. This makes fuller use of the energy of the gas and improves the energy efficiency. In vehicle gas heaters, higher energy utilization means that more heat can be provided under the same fuel consumption, or the fuel consumption can be reduced when the same heating effect is achieved, thereby reducing the operating cost of the vehicle and improving economic benefits.
[0020] The ventilation pipe introduces air into the thermal reaction chamber, which changes the gas composition and concentration distribution in the thermal reaction chamber and promotes the further progress of the combustion reaction. In addition to reacting with nitrogen oxides, the oxygen in the air can also react with the incompletely burned gas components to make the combustion more complete. This optimized combustion performance not only helps to reduce pollutant emissions and improve energy utilization, but also makes the combustion process more stable, reduces combustion fluctuations and incomplete combustion caused by problems such as carbon deposition and flame instability. Stable combustion performance can extend the service life of the heater, reduce equipment maintenance costs, and ensure that the vehicle can obtain stable and reliable heating effects under various working conditions.
[0021] The incoming air interacts with the combustion products and incompletely reacted substances in the thermal reaction chamber, enhancing the thermal reaction effect. The temperature distribution in the thermal reaction chamber is more uniform, and the heat transfer is more sufficient, making the entire heat exchange process more efficient. This is conducive to improving the heat exchange efficiency of the heat exchanger, so that more heat can be effectively transferred to the interior space of the vehicle, and improving the heating rate and temperature uniformity in the vehicle. In cold weather, after the vehicle starts the heater, passengers can feel the warmth more quickly, and can enjoy a more comfortable temperature at different locations in the car, which improves riding comfort. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.
[0023] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 Based Figure 1 A is a schematic diagram of the enlarged structure of the middle part; Figure 3 It is a partial structural schematic diagram of the present invention.
[0024] In the figure: shell 1, installation cavity 101, combustion chamber 2, combustion cavity 201, thermal reaction cavity 202, heat exchange cavity 102, burner 3, ventilation pipe 4, opening 401, heat exchanger 5, annular baffle 203, through hole 205, hot gas outlet 204, bending portion 402, smoke exhauster 6, heat exchange tube 7, preheater 8, annular heat exchange portion 501, plane heat exchange portion 502, baffle 9, annular baffle 10, annular channel 1001, notch 901, outlet 1002, partition 11, water pump 12, fan 13, mixer 14, large end 206, small end 207, igniter 15. DETAILED DESCRIPTION
[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.
[0026] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".
[0027] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0028] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0029] Reference Figure 1~Figure 3 , which is the first embodiment of the present invention, proposes a vehicle gas heater, including a shell 1, the shell 1 has an installation cavity 101, a combustion chamber 2 is arranged in the installation cavity 101, the combustion chamber 2 has a combustion cavity 201 and a thermal reaction cavity 202, a heat exchange cavity 102 is formed between the combustion chamber 2 and the inner wall of the installation cavity 101, the combustion cavity 201 leads to the thermal reaction cavity 202, the thermal reaction cavity 202 leads to the heat exchange cavity 102, and a burner 3 is arranged in the combustion chamber 2 and is located at the thermal reaction cavity 202. On one side of the heat reaction chamber 202, the vent pipe 4 leads to the thermal reaction chamber 202, and the vent pipe 4 has an opening 401. The heat exchanger 5 is located in the heat exchange chamber 102 and exchanges heat with the heat exchange chamber 102. The combustion chamber 2 has an annular baffle 203, which is located on one side of the thermal reaction chamber 202. The annular baffle 203 has a through hole 205. The combustion chamber 201 has a hot gas outlet 204, which faces the annular baffle 203, and the opening 401 faces the through hole 205.
[0030] In this embodiment, the vehicle gas heater is mainly composed of a shell 1, a combustion chamber 2, a burner 3, a vent pipe 4 and a heat exchanger 5. The shell 1 provides a space for installation and protection for the entire device, and has an installation cavity 101 inside. The combustion chamber 2 is located in the installation cavity 101, which is the core area for realizing gas combustion and heat exchange. It includes a combustion chamber 201, a thermal reaction chamber 202 and a heat exchange cavity 102 formed therebetween. The burner 3 is arranged in the combustion chamber 2 and is located on one side of the thermal reaction cavity 202, and is used to spray gas into the combustion cavity 201 for combustion. The vent pipe 4 leads to the thermal reaction cavity 202. If incompletely reacted gas appears after combustion, the necessary gas for reaction is provided through the vent pipe 4. The heat exchanger 5 is located in the heat exchange cavity 102, and realizes heating of the surrounding medium by heat exchange with the heat exchange cavity 102. The annular retaining portion 203 of the combustion chamber 2 is located on one side of the thermal reaction cavity 202, and a through hole 205 is provided on the annular retaining portion 203. The combustion chamber 201 has a hot gas outlet 204 , which faces the annular stopper 203 , and the opening 401 of the vent pipe 4 also faces the through hole 205 of the annular stopper 203 .
[0031] The design of the vent pipe 4 to introduce air into the thermal reaction chamber 202 plays a key role in reducing pollutant emissions. During the combustion of gas, even if the combustion chamber 2 fails to fully burn, incompletely reacted nitrogen oxide pollutants such as nitric oxide NO and nitrogen dioxide NO2 will be produced. After the vent pipe 4 introduces air, these nitrogen oxides continue to react with oxygen in the high temperature environment of the thermal reaction chamber 202, for example, the following reaction occurs: 2NO + O2 → 2NO2, and a series of subsequent complex reactions may occur, so that the nitrogen oxides are further converted into other harmless or less harmful substances, thereby significantly reducing the emission of pollutants to the external environment. This is of great significance for improving the air quality around vehicles, especially in urban traffic environments with dense vehicles, which can reduce the pollution of nitrogen oxides to the atmospheric environment, reduce the risk of acid rain formation, and protect the ecological environment and human health.
[0032] The incompletely reacted nitrogen oxides continue to react with the introduced oxygen in the thermal reaction chamber 202 to release heat, thereby further recycling energy. The chemical energy that might have been lost as pollutant emissions is converted into thermal energy in this way, increasing the total calorific value of the heater. This makes more full use of the energy of the fuel gas and improves energy efficiency. In a vehicle gas heater, higher energy utilization means that more heat can be provided under the same fuel consumption, or the amount of fuel used can be reduced when the same heating effect is achieved, thereby reducing the operating cost of the vehicle and improving economic benefits.
[0033] The vent pipe 4 introduces air into the thermal reaction chamber 202, which changes the gas composition and concentration distribution in the thermal reaction chamber 202 and promotes the further progress of the combustion reaction. In addition to reacting with nitrogen oxides, the oxygen in the air can also react with the incompletely burned fuel gas components to make the combustion more complete. This optimized combustion performance not only helps to reduce pollutant emissions and improve energy utilization, but also makes the combustion process more stable, reduces combustion fluctuations and incomplete combustion caused by problems such as carbon deposition and flame instability. Stable combustion performance can extend the service life of the heater, reduce equipment maintenance costs, and ensure that the vehicle can obtain stable and reliable heating effects under various operating conditions.
[0034] The air introduced interacts with the combustion products and incompletely reacted substances in the thermal reaction chamber 202, enhancing the thermal reaction effect. The temperature distribution in the thermal reaction chamber 202 is more uniform, and the heat transfer is more sufficient, making the entire heat exchange process more efficient. This is conducive to improving the heat exchange efficiency of the heat exchanger 5, so that more heat can be effectively transferred to the interior space of the vehicle, and the heating rate and temperature uniformity in the vehicle are improved. In cold weather, after the vehicle starts the heater, passengers can feel the warmth more quickly, and can enjoy a more comfortable temperature at different locations in the vehicle, which improves riding comfort.
[0035] Furthermore, the ventilation pipe 4 is a spiral pipe, and the ventilation pipe 4 is spirally wound on the inner wall of the heat exchange cavity 102 . The ventilation pipe 4 has a bending portion 402 , and the bending portion 402 extends from the inner wall of the heat exchange cavity 102 toward the through hole 205 .
[0036] In this embodiment, the vent pipe 4 is designed as a spiral pipe, which is spirally wound on the inner wall of the heat exchange chamber 102. This design not only increases the contact area between the vent pipe 4 and the heat exchange chamber 102, improves the heat exchange efficiency, but also enables the vent pipe 4 to be better laid out in a limited space. At the same time, the vent pipe 4 has a bending portion 402, which extends from the inner wall of the heat exchange chamber 102 to the through hole 205, and its function is to more accurately guide the gas flow to the thermal reaction chamber 202, promote the uniform distribution and mixing of the gas in the thermal reaction chamber 202, and further improve the combustion and heat exchange effect. The vent pipe 4 is tightly wound on the inner wall of the heat exchange chamber 102 in a spiral shape, and the spiral spacing is uniform, so that the gas can be evenly heated when flowing in the vent pipe 4. When the hot gas in the combustion chamber 201 flows in the heat exchange chamber 102, the heat will be transferred to the spiral vent pipe 4 through the inner wall of the heat exchange chamber 102. Since the contact area between the vent pipe 4 and the inner wall of the heat exchange chamber 102 is increased, the heat transfer is more sufficient. The gas in the vent pipe 4 continuously absorbs heat during the flow process, and the temperature gradually increases. This preheating effect helps the gas to better mix with the hot gas after combustion after entering the thermal reaction chamber 202, promotes the combustion reaction, and improves the combustion efficiency.
[0037] The main function of the bend 402 is to guide the gas to flow to the thermal reaction chamber 202. After the gas in the vent pipe 4 is preheated by the spiral part, it can be directly sprayed into the thermal reaction chamber 202 through the bend 402, and because the extension direction of the bend 402 corresponds to the position of the through hole 205, the gas can be more evenly distributed in the thermal reaction chamber 202. This allows the gas to be more fully mixed with the hot gas after combustion, further improving the completeness of combustion and the efficiency of thermal reaction. At the same time, the design of the bend 402 also helps to reduce the resistance of the gas during the flow process, ensuring the smooth supply of gas.
[0038] Furthermore, it also includes a smoke exhauster 6, which is arranged on the shell 1, and the smoke exhauster 6 has a smoke exhaust chamber. The heat exchange chamber 102 leads to the smoke exhaust chamber. The heat exchange tube 7 is connected to the heat exchanger 5 for heat exchange. The preheater 8 is arranged on the smoke exhauster 6 for heat exchange. The preheater 8 leads to the heat exchanger 5, the heat exchanger 5 leads to the heat exchange tube 7, and the heat exchange tube 7 leads to the preheater 8.
[0039] In this embodiment, the smoke exhauster 6 is arranged on the housing 1, and is used to exhaust the exhaust gas after combustion. It has a smoke exhaust chamber connected to the heat exchange chamber 102 to ensure that the smoke after combustion can be discharged smoothly. The heat exchange pipe 7 is connected to the heat exchanger 5, and plays an important role in heat transfer and medium transportation. The preheater 8 is arranged on the smoke exhauster 6 for heat exchange, and fully utilizes the waste heat of the exhaust to preheat the medium entering the heat exchanger 5, forming a complete and efficient heat exchange circulation system.
[0040] By adding a preheater 8, the waste heat of the exhaust gas is used to preheat the medium, which greatly improves the efficiency of energy utilization. It reduces the consumption of gas, reduces the operating cost of the vehicle, and also meets the requirements of energy conservation and environmental protection. The setting of the heat exchange tube 7 enables the heat to be more efficiently transferred and distributed between the heat exchanger 5, the preheater 8 and the parts that need heat. A complete heat exchange circulation system is formed to ensure that the medium can be heated evenly, and the heating effect and stability are improved. In a low temperature environment, the preheater 8 can heat the medium in advance, so that the heater can reach the working temperature faster, improve the starting performance and heating speed of the vehicle in cold weather, and provide a more comfortable environment for the driver and passengers. The outside of the exhaust gas 6 and the preheater 8 are wrapped with insulation materials, which effectively reduces the loss of heat during the transmission process. At the same time, the reasonable structural design and layout also reduce the risk of heat leakage and improve the thermal efficiency of the entire heater. By optimizing the heat exchange process and reducing heat loss, the operating temperature and thermal stress of each component of the heater are reduced, thereby extending the service life of the equipment. The probability of component damage and failure caused by overheating is reduced, and the reliability and stability of the heater are improved.
[0041] Furthermore, the heat exchanger 5 has an annular heat exchange portion 501 and a planar heat exchange portion 502 , the through hole 205 faces the planar heat exchange portion 502 , the annular heat exchange portion 501 is located at the cavity wall of the heat exchange cavity 102 , and the planar heat exchange portion 502 is located at the end of the annular heat exchange portion 501 .
[0042] In this embodiment, the heated gas enters the thermal reaction chamber 202 from the combustion chamber 201, and is blown toward the planar heat exchange part 502 through the hot gas outlet 204 after being fully reacted in the thermal reaction chamber 202, and heat is exchanged through the planar heat exchange part 502. When the gas passes through the hot gas outlet 204, it will first exchange heat with the planar heat exchange part 502. It should be noted that the heat exchange medium in the heat exchanger 5 flows from the annular heat exchange part 501 to the planar heat exchange part 502, so that the medium heated by the high-temperature gas is the medium of the highest temperature part of the heat exchange part in the heat exchanger 5, which can improve the heat exchange efficiency and enhance the heat exchange effect.
[0043] Furthermore, it also includes a baffle 9, which is tiltedly arranged on the planar heat exchange part 502, and a plurality of baffles 9 are arranged in an array. An annular baffle plate 10 is arranged on the planar heat exchange part 502, and the baffle 9 closest to the annular heat exchange part 501 is connected to the annular baffle plate 10, and an annular channel 1001 is formed between the annular baffle plate 10 and the inner wall of the installation cavity 101.
[0044] In this embodiment, the baffle 9 is tilted on the planar heat exchange portion 502, and a plurality of baffles 9 are arranged in an array, and a certain angle is formed between adjacent baffles 9. The tilt angle and arrangement of the baffles 9 are carefully designed to optimize the flow path and heat exchange efficiency of the gas in the planar heat exchange portion 502. When the hot gas blows from the through hole 205 to the planar heat exchange portion 502, the baffle 9 can guide the gas to form a tortuous flow path on the planar heat exchange portion 502, increase the contact time and contact area between the gas and the planar heat exchange portion 502, and thus improve the heat exchange effect.
[0045] The annular baffle 10 is arranged on the planar heat exchange part 502, the baffle 9 closest to the annular heat exchange part 501 is connected to the annular baffle 10, and an annular channel 1001 is formed between the annular baffle 10 and the inner wall of the installation cavity 101. The setting of the annular baffle 10 further guides the flow direction of the gas, so that the gas after passing through the baffle 9 can flow in an orderly manner along the annular channel 1001. The annular channel 1001 not only contributes to the uniform distribution of the gas, but also enables the gas to have a more sufficient heat exchange with the planar heat exchange part 502 and the inner wall of the installation cavity 101 during the flow process, thereby improving the efficiency and uniformity of the entire heat exchange process. At the same time, the annular baffle 10 can also play a certain protective role, reduce the interference and damage of external factors to the planar heat exchange part 502, and ensure the stable operation of the heat exchanger 5.
[0046] Furthermore, the baffle 9 has a notch 901 , which is arranged in a plurality of rows. The annular baffle 10 has an outlet 1002 , which is arranged in a plurality of circles. The outlet 1002 leads to the annular channel 1001 . The baffle 9 is a twisted structure.
[0047] In this embodiment, the notch 901 of the baffle 9 is designed so that the gas can form a more complex flow pattern when flowing through the baffle 9. A plurality of notches 901 are arranged to increase the contact area between the gas and the baffle 9, further promoting heat exchange. When the hot gas is blown from the through hole 205 to the planar heat exchange portion 502, part of the gas passes through the notch 901 on the baffle 9 and enters the annular cavity formed by the outermost baffle 9 and the annular baffle 10.
[0048] This flow mode prolongs the residence time of the gas in the annular cavity, allowing the gas to fully exchange heat with the wall of the annular cavity, further improving the heat exchange efficiency. At the same time, the circumferentially arranged outlets 1002 can make the gas after heat exchange in the annular cavity flow out more evenly, mix with the gas in other parts, and optimize the heat distribution in the entire heat exchange cavity 102. The staggered arrangement of the outlet 1002 and the inlet can also prevent the gas from forming a short-circuit flow in the annular cavity, ensuring that each gas can fully participate in the heat exchange process, thereby maximizing the heat exchange effect and energy utilization efficiency of the vehicle gas heater. The baffle 9 with a twisted structure further increases the heat exchange area, making the heat exchange more uniform.
[0049] Furthermore, it also includes a partition 11, which is arranged in the annular channel 1001, and the partition 11 is spirally arranged in the annular channel 1001.
[0050] In this embodiment, the partition 11 is arranged in the annular channel 1001, and the partition 11 is arranged in a spiral manner in the annular channel 1001. The spiral design of the partition 11 increases the flow path length of the gas in the annular channel 1001, so that the gas can have a more sufficient heat exchange with the wall surface of the annular channel 1001. When the gas flows in the annular channel 1001, due to the blocking and guidance of the partition 11, the gas is forced to flow along the spiral path of the partition 11, thereby increasing the contact time and contact area between the gas and the partition 11 and the wall surface of the annular channel 1001. In this way, the heat exchange efficiency can be further improved, so that more heat can be transferred from the gas to the components around the annular channel 1001.
[0051] In addition, the spiral partition 11 can also stabilize the airflow. The gas flows in the annular channel 1001 in a more orderly manner, reducing the turbulence and fluctuation of the airflow, thereby reducing energy loss and improving the stability and reliability of the entire heat exchange system. At the same time, the presence of the partition 11 can also enhance the structural strength of the annular channel 1001 and prevent the annular channel 1001 from being deformed or damaged due to gas pressure or other external forces during long-term use.
[0052] Furthermore, it also includes a water pump 12, which is arranged on the outside of the shell 1 and is connected to the heat exchange tube 7 to provide power for the flow of heat exchange medium in the heat exchange tube 7. The fan 13 is arranged in the installation cavity 101 and is located on the side of the combustion chamber 2 away from the planar heat exchange part 502. The mixer 14 is arranged on the side of the fan 13 close to the combustion chamber 2. The fan 13 is used to guide the flow of gas and air.
[0053] In this embodiment, the water pump 12 is arranged on the outside of the shell 1 and is connected to the heat exchange tube 7. The water pump 12 provides power for the flow of the heat exchange medium in the heat exchange tube 7 to ensure that the heat exchange medium can circulate in the entire heat exchange system. By accurately controlling the flow and pressure of the water pump 12, the flow rate of the heat exchange medium can be adjusted to match the combustion process and the heat exchange requirements. This can ensure that the heat exchanger 5 can continuously and efficiently absorb and transfer heat, and improve the overall performance of the heater. For example, at the initial start of the vehicle, the water pump 12 can run at a higher speed to speed up the circulation of the heat exchange medium, so that the heater quickly reaches the operating temperature and provides warmth in the vehicle. After the vehicle runs stably, the water pump 12 can adjust the speed according to actual needs to maintain a suitable heat exchange efficiency while reducing energy consumption.
[0054] The fan 13 is arranged in the installation cavity 101 and is located on the side of the combustion chamber 2 away from the planar heat exchange portion 502. The fan 13 is mainly used for guiding the flow of gas and air. During the combustion process, the fan 13 can evenly introduce air into the combustion chamber 2, and fully mix it with the gas ejected from the burner 3 to ensure the stability and completeness of the combustion. At the same time, the fan 13 can also promote the flow of post-combustion gas in the heat exchange cavity 102, speed up the speed of heat transfer to the heat exchanger 5, and improve the heat exchange efficiency. In addition, the operation of the fan 13 can also help adjust the air pressure in the installation cavity 101, ensure that the entire heater system operates within a normal pressure range, and prevent safety problems or performance degradation caused by abnormal pressure.
[0055] The mixer 14 is arranged on the side of the fan 13 close to the combustion chamber 2. The function of the mixer 14 is to further optimize the mixing effect of the gas and the air. It can make the gas and the air fully mixed before entering the combustion chamber 2 to form a more ideal combustible mixture. This can improve the combustion efficiency, reduce the generation of incomplete combustion products, and reduce pollutant emissions. The design of the mixer 14 usually takes into account factors such as the flow rate, pressure and mixing ratio of the gas, and realizes efficient mixing of the gas and the air through reasonable structure and flow channel design.
[0056] Furthermore, the thermal reaction chamber 202 is a trumpet-shaped chamber having a large end 206 and a small end 207 , and the combustion chamber 201 leads to the small end 207 .
[0057] In the present embodiment, the thermal reaction chamber 202 is a trumpet-shaped cavity having a large end 206 and a small end 207, and the combustion chamber 201 leads to the small end 207. The trumpet-shaped thermal reaction chamber 202 design has many advantages. First, the small end 207 is connected to the combustion chamber 201, so that the burned gas can enter the thermal reaction chamber 202 at a higher speed. As the thermal reaction chamber 202 gradually expands to the large end 206, the flow rate of the gas gradually decreases, thereby extending the residence time of the gas in the thermal reaction chamber 202. This provides more sufficient time for the incompletely burned gas to fully react with the air introduced by the vent pipe 4, further promotes the conversion of pollutants such as nitrogen oxides and the continued combustion of incompletely burned fuel gas, improves combustion efficiency and reduces pollutant emissions. Secondly, the structure of the trumpet-shaped cavity helps the gas to form a more uniform flow field distribution in the thermal reaction chamber 202. After the gas enters from the small end 207, it will gradually fill the entire thermal reaction chamber 202 in the process of diffusing to the large end 206, so that the gas can contact and mix more fully with the wall of the thermal reaction chamber 202 and the air at the outlet 1002 of the vent pipe 4. This uniform flow field distribution is conducive to improving the effect and stability of the thermal reaction, reducing local overheating or overcooling, and thus improving the performance and reliability of the entire heater. In addition, the large end 206 of the trumpet-shaped thermal reaction chamber 202 can also provide better conditions for the subsequent heat exchange process. When the gas flowing out of the thermal reaction chamber 202 enters the heat exchange chamber 102, due to the larger space of the large end 206, the gas can diffuse more smoothly around the heat exchanger 5 and perform more sufficient heat exchange with the heat exchanger 5. In this way, the heat exchange efficiency of the heat exchanger 5 can be improved, so that more heat can be effectively transferred to the heat exchange medium, providing the required heating effect for the vehicle.
[0058] Furthermore, an igniter 15 is included. The igniter 15 is arranged in the installation cavity 101 and is used for igniting the burner 3 .
[0059] In this embodiment, the igniter 15 is arranged in the mounting cavity 101 and is used for igniting the burner 3. The design of the igniter 15 should be efficient and reliable. It can quickly ignite the gas ejected from the burner 3 when the vehicle is started or needs to be heated, ensuring that the heater can be put into operation in time.
[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.
Claims
1. A vehicle gas heater, characterized in that: include A housing (1), wherein the housing (1) has a mounting cavity (101), A combustion chamber (2), the combustion chamber (2) being arranged in the installation chamber (101), the combustion chamber (2) comprising a combustion chamber (201) and a thermal reaction chamber (202), a heat exchange chamber (102) being formed between the combustion chamber (2) and an inner wall of the installation chamber (101), the combustion chamber (201) leading to the thermal reaction chamber (202), and the thermal reaction chamber (202) leading to the heat exchange chamber (102), a burner (3), the burner (3) being arranged in the combustion chamber (2) and located on one side of the thermal reaction chamber (202), a vent pipe (4), the vent pipe (4) leading to the thermal reaction chamber (202), the vent pipe (4) having an opening (401), A heat exchanger (5), the heat exchanger (5) being located in the heat exchange cavity (102) and exchanging heat with the heat exchange cavity (102); the combustion chamber (2) having an annular retaining portion (203), the annular retaining portion (203) being located on one side of the thermal reaction cavity (202), the annular retaining portion (203) having a through hole (205), the combustion cavity (201) having a hot gas outlet (204), the hot gas outlet (204) facing the annular retaining portion (203), and the opening (401) facing the through hole (205).
2. A vehicle gas heater according to claim 1, characterized in that: The ventilation pipe (4) is a spiral pipe, the ventilation pipe (4) is spirally wound and arranged on the inner wall of the heat exchange cavity (102), the ventilation pipe (4) has a bending portion (402), and the bending portion (402) extends from the inner wall of the heat exchange cavity (102) towards the through hole (205).
3. A vehicle gas heater according to claim 1, characterized in that: Also includes A smoke exhauster (6), the smoke exhauster (6) being arranged on the housing (1), the smoke exhauster (6) having a smoke exhaust cavity, the heat exchange cavity (102) leading to the smoke exhaust cavity, a heat exchange tube (7), the heat exchange tube (7) being in communication with the heat exchanger (5) and being used for heat exchange, A preheater (8), wherein the preheater (8) is arranged on the smoke exhauster (6) for heat exchange, the preheater (8) leads to the heat exchanger (5), the heat exchanger (5) leads to the heat exchange tube (7), and the heat exchange tube (7) leads to the preheater (8).
4. A vehicle gas heater according to claim 3, characterized in that: The heat exchanger (5) comprises an annular heat exchange portion (501) and a planar heat exchange portion (502); the through hole (205) faces the planar heat exchange portion (502); the annular heat exchange portion (501) is located on the cavity wall of the heat exchange cavity (102); and the planar heat exchange portion (502) is located at the end of the annular heat exchange portion (501).
5. A vehicle gas heater according to claim 4, characterized in that: Also includes a baffle (9), wherein the baffle (9) is arranged obliquely on the planar heat exchange portion (502), and a plurality of the baffles (9) are arranged in an array. An annular baffle (10), the annular baffle (10) being arranged on the planar heat exchange portion (502), the baffle (9) closest to the annular heat exchange portion (501) being connected to the annular baffle (10), and an annular channel (1001) being formed between the annular baffle (10) and the inner wall of the installation cavity (101).
6. A vehicle gas heater according to claim 5, characterized in that: The baffle (9) has a notch (901), and the notches (901) are arranged in a plurality of rows. The annular baffle (10) has an outlet (1002), and the outlets (1002) are arranged in a plurality of circles. The outlets (1002) lead to the annular channel (1001), and the baffle (9) is a twisted structure.
7. A vehicle gas heater according to claim 5, characterized in that: Also includes A partition (11), wherein the partition (11) is arranged in the annular channel (1001), and the partition (11) is spirally arranged in the annular channel (1001).
8. A vehicle gas heater according to claim 7, characterized in that: Also includes a water pump (12), the water pump (12) being arranged outside the housing (1) and being in communication with the heat exchange tube (7) to provide power for the heat exchange medium in the heat exchange tube (7) to flow. a fan (13), the fan (13) being arranged in the installation cavity (101) and located on a side of the combustion chamber (2) away from the planar heat exchange portion (502), A mixer (14), the mixer (14) being arranged on a side of the fan (13) close to the combustion chamber (2), the fan (13) being used for guiding the flow of fuel gas and air.
9. The vehicle gas heater according to claim 1, characterized in that: The thermal reaction chamber (202) is a trumpet-shaped chamber, the thermal reaction chamber (202) having a large end (206) and a small end (207), and the combustion chamber (201) leads to the small end (207).
10. A vehicle gas heater according to claim 1, characterized in that: Also includes An igniter (15), the igniter (15) being arranged in the mounting cavity (101) and used for igniting the burner (3).