Parking heater

Abstract

The utility model belongs to the technical field of heaters, and discloses a parking heater which comprises a shell, an air inlet and an air outlet. The combustion chamber is arranged in the shell and comprises an open end and a closed end, the open end faces the air outlet and comprises a high side and a low side, the end face of the open end is an inclined face, and the closed end is provided with a combustion part; and the heat exchange cavity is of a hollow structure and is arranged between the shell and the combustion chamber, an air inlet and an air outlet are formed in the side wall of the heat exchange cavity, the air inlet is communicated with the combustion part, and the air outlet is formed in the high side of the opening end. According to the parking heater, the open end of the combustion chamber is arranged to be in the non-equal-height design including the high side and the low side, high-temperature gas is made to make uniform contact with the heat exchange cavity, the effective contact area of the high-temperature gas and the heat exchange cavity is greatly increased, the heat utilization rate is increased, and the heating performance of the parking heater is improved.

Description

Technical Field

[0001] This utility model belongs to the field of heater technology and relates to a parking heater. Background Technology

[0002] With the continuous development of automotive technology and people's increasing demands for vehicle comfort, parking heaters are being used more and more widely in the automotive field. Parking heaters can provide warmth to the passenger compartment when the vehicle is parked, effectively improving the driving and riding environment in cold weather. They can also be used to preheat the engine, improving engine starting performance and reducing wear.

[0003] Existing parking heaters typically employ a traditional combustion chamber design with uniformly sized combustion chamber ends. During operation, air is introduced into the combustion chamber to mix thoroughly with fuel and undergo combustion, producing a large amount of high-temperature gas. This gas is then discharged from the exhaust port and exchanges heat with a heat exchanger along its flow path, allowing the heat exchanger to absorb heat and heat the external air or other media. However, this traditional uniform combustion chamber end-face design reveals significant drawbacks in practical applications. Due to the uniform height of the combustion chamber ends, the high-temperature gas generated during combustion exhibits significant non-uniformity as it flows towards the exhaust port, influenced by factors such as gas flow characteristics and pressure distribution. Specifically, the majority of the high-temperature gas tends to flow out from the side closer to the exhaust port, resulting in a large difference in the flow rate of high-temperature gas received by the heat exchanger on the sides closer to and farther from the exhaust port, thus causing a severe temperature imbalance on both sides of the heat exchanger.

[0004] Therefore, there is an urgent need in this field for a parking heater to solve the above-mentioned technical problems. Utility Model Content

[0005] In view of this, the purpose of this utility model is to solve the above problems and provide a parking heater, comprising:

[0006] The housing has an air inlet and an air outlet.

[0007] A combustion chamber is disposed inside the housing. The combustion chamber includes an open end and a closed end. The open end is oriented toward the air outlet and includes a high side and a low side. The end face of the open end is inclined. The closed end is provided with a combustion section.

[0008] The heat exchange cavity is a hollow structure and is located between the shell and the combustion chamber. The side wall of the heat exchange cavity is provided with an air inlet and an air outlet. The air inlet is connected to the combustion section, and the air outlet is located on the high side of the opening end.

[0009] As a further improvement of this utility model, the heat exchange chamber includes a first chamber and a second chamber. The first chamber is connected to the air outlet, and the second chamber is connected to the air inlet. A partition is provided between the first chamber and the second chamber, and the partition is sleeved on the outside of the combustion section.

[0010] As a further improvement of this utility model, the parking heater also includes a secondary heat exchanger, which is fixedly connected to the heat exchange cavity.

[0011] The bottom of the secondary heat exchanger is provided with a heat exchange groove, which is arranged around the bottom edge of the secondary heat exchanger.

[0012] The heat exchange cavity has heat exchange channels arranged axially along its sidewalls, and the heat exchange channels include a first heat exchange channel and a second heat exchange channel arranged adjacent to each other.

[0013] The first heat exchange channel connects the first cavity and the heat exchange tank, and the second heat exchange channel connects the heat exchange tank and the air outlet.

[0014] As a further improvement of this utility model, the bottom end of the second cavity is provided with a first impeller, the first impeller includes a first suction part and a first discharge part, and the first suction part is connected to the first discharge part;

[0015] The bottom end of the second cavity is also provided with an annular groove, which is disposed opposite to the first air intake and is connected to the air inlet.

[0016] As a further improvement of this utility model, a gas pipe is sleeved at the bottom end of the combustion section, and an oil storage tank is provided between the gas pipe and the combustion section, and an oil inlet pipe is connected to the oil storage tank.

[0017] The air pipe includes an air inlet and an air outlet, the air inlet facing the first air outlet and the air outlet extending into the interior of the combustion chamber;

[0018] The bottom of the air intake is provided with a baffle plate, and a connecting piece is radially provided on the edge of the baffle plate. The baffle plate is connected to the air intake through the connecting piece.

[0019] As a further improvement of this utility model, the parking heater also includes a motor, which is disposed near the air inlet;

[0020] The motor includes a first output shaft and a second output shaft arranged coaxially, and the first output shaft is connected to the first impeller.

[0021] As a further improvement of this utility model, the parking heater further includes a second impeller, which is connected to the second output shaft;

[0022] The second impeller includes a second intake section and a second outlet section that are interconnected, with the second intake section facing the air inlet.

[0023] As a further improvement of this utility model, heat-absorbing ribs are provided on the outside of the heat exchange cavity and the outside of the secondary heat exchange component, and the heat-absorbing ribs on the outside of the heat exchange cavity extend into the first cavity.

[0024] As a further improvement of this utility model, an ignition device is also provided outside the combustion section. The ignition device includes a heating rod that extends into the oil storage tank.

[0025] As a further improvement of this utility model, the outer wall of the shell is provided with an mounting plate, and the mounting plate is fixedly connected to the heat exchange cavity;

[0026] The air inlet, the air outlet, and the oil inlet pipe all pass through the mounting plate and are exposed outside the housing.

[0027] The technical advantages of this utility model are as follows: Compared with the prior art, the parking heater provided by this utility model, by setting the opening end of the combustion chamber to a non-equal height design including a high side and a low side, allows the high-temperature gas to contact the heat exchange cavity evenly. Compared with the traditional equal-height combustion chamber structure, this greatly increases the effective contact area between the high-temperature gas and the heat exchange cavity, allowing for more complete heat exchange. More heat can be transferred from the high-temperature gas to the heat exchange cavity and then to the incoming cold air, improving heat utilization and reducing energy waste. Under the same energy consumption, more heat energy can be output, improving the heating performance of the parking heater. Because the high-temperature gas enters the heat exchange cavity evenly and exchanges heat with it fully, the hot air flowing out after heat exchange has a more uniform temperature distribution, avoiding local uneven heating and cooling of the hot air blown out of the air outlet, thus improving the user experience. The uniform heat exchange process makes the temperature field in the combustion chamber and heat exchange cavity more stable, avoiding adverse effects on equipment components caused by local overheating or excessive temperature fluctuations. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model, not all embodiments. For those skilled in the art, other drawings obtained from these drawings without creative effort are all within the protection scope of this utility model.

[0029] Figure 1 This is a perspective view of a parking heater provided in an embodiment of the present utility model;

[0030] Figure 2 This is an exploded view of a parking heater provided in an embodiment of this utility model;

[0031] Figure 3 yes Figure 1 Cross-sectional view at point AA;

[0032] Figure 4 This is a perspective view of the secondary heat exchanger provided in an embodiment of this utility model.

[0033] Among them, 10 is the housing, 11 is the air inlet, 12 is the air outlet, and 13 is the mounting plate;

[0034] 20 is the combustion chamber, 21 is the open end, 211 is the high side, 212 is the low side, 22 is the closed end, 221 is the combustion section, 2211 is the ignition device, 222 is the gas pipe, 2221 is the air inlet, 2222 is the air outlet, 2223 is the baffle, 2224 is the connecting piece, 223 is the oil reservoir, and 2231 is the oil inlet pipe;

[0035] 30 is a heat exchange chamber, 31 is an air inlet, 32 is an air outlet, 33 is a first chamber, 34 is a second chamber, 341 is a first impeller, 3411 is a first air intake section, 3412 is a first air outlet section, 342 is an annular groove, 35 is a partition, 36 is a heat exchange channel, 361 is a first heat exchange channel, 362 is a second heat exchange channel, and 37 is a heat absorption rib.

[0036] 40 is a secondary heat exchanger, and 41 is a heat exchange tank;

[0037] 50 is the motor, 51 is the first output shaft, 52 is the second output shaft, 53 is the second impeller, 531 is the second intake section, and 532 is the second exhaust section. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0039] To make the description of this disclosure more detailed and complete, illustrative descriptions of the embodiments and specific examples of this utility model are provided below; however, this is not the only form of implementing or using the specific embodiments of this utility model. The embodiments cover the features of multiple specific embodiments and the methods, steps, and sequences for constructing and operating these specific embodiments. However, other specific embodiments can also be used to achieve the same or equivalent functions and sequence of steps. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0040] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0041] It should be understood that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in sequences other than those illustrated or described herein.

[0042] In the description of this utility model, the terms "front", "rear", "top", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] Please refer to Figures 1-4 One embodiment of this utility model provides a parking heater to solve the problem that there is a large difference in the flow rate of high-temperature gas received by the heat exchanger on the two sides near the exhaust port and far from the exhaust port in the existing parking heater, which causes a serious temperature imbalance on both sides of the heat exchanger.

[0044] Specifically, please refer to Figure 1 A perspective view of a parking heater provided in an embodiment of this utility model. Figure 2This is an exploded view of a parking heater according to an embodiment of the present invention. The parking heater includes a housing 10, a combustion chamber 20, and a heat exchange cavity 30. Specifically, the housing 10 has an air inlet 11 and an air outlet 12. Outside air enters the parking heater through the air inlet 11, and the parking heater heats the air before it flows out through the air outlet 12. The combustion chamber 20 is located inside the housing 10 and includes an open end 21 and a closed end 22. The open end 21 is positioned towards the air outlet 12. The open end 21 includes a high side 211 and a low side 212. The end face of the open end 21 is a slope. The closed end 22 is provided with a combustion section 221. The heat exchange chamber 30 is a hollow structure. The heat exchange chamber 30 is located between the shell 10 and the combustion chamber 20. The side wall of the heat exchange chamber 30 is provided with an air inlet 31 and an air outlet 32. The air inlet 31 communicates with the combustion section 221. The air outlet 32 ​​is located on the high side 211 of the open end 21. By setting the opening end 21 of the combustion chamber 20 as an inclined surface, the opening end 21 includes a high side 211 and a low side 212, and the air outlet 32 ​​is located on the high side 211 of the opening end 21, this unique structure changes the natural flow path of high-temperature gas. When fuel and air are mixed and burned in the combustion chamber 20 to generate high-temperature gas, based on the characteristics of hot air naturally flowing upward and towards the direction of low pressure, combined with the height difference at the end of the combustion chamber 20, the high-temperature gas is more likely to spread from the low side 212 and flow towards the high side 211, that is, flow orderly towards the air outlet 32. Furthermore, the design of the height decreasing as the distance from the air outlet 32 ​​increases, so that the high-temperature gas inside the entire combustion chamber 20 can more evenly converge towards the air outlet 32 ​​under the guidance of this height difference. This avoids the situation in the traditional equal-height structure where high-temperature gas concentrates and flows out rapidly from a local area, thereby achieving more uniform entry of high-temperature gas into the heat exchange chamber 30. Outside air enters the parking heater through the air inlet 11. The air then comes into contact with the wall of the heat exchange chamber 30. The heat exchange chamber 30 uses the heat carried by the high-temperature gas flowing in from the combustion chamber 20 to exchange heat with the incoming cold air through heat conduction, causing the cold air temperature to gradually rise and become hot air. The heated air flows out through the air outlet 12 on the housing 10, providing warm air for the environment that needs heating and improving the heating efficiency of the parking heater.

[0045] This embodiment of a parking heater utilizes a non-uniform height design at the end of the combustion chamber 20 to ensure uniform contact between high-temperature gas and the heat exchange cavity 30. Compared to a traditional uniform height combustion chamber 20 structure, this significantly increases the effective contact area between the high-temperature gas and the heat exchange cavity 30, allowing for more thorough heat exchange. More heat is transferred from the high-temperature gas to the heat exchange cavity 30 and then to the incoming cold air, improving heat utilization and reducing energy waste. Under the same energy consumption, more heat energy can be output, enhancing the heating performance of the parking heater. Because the high-temperature gas enters the heat exchange cavity 30 uniformly and undergoes thorough heat exchange, the hot air flowing out after heat exchange has a more uniform temperature distribution, preventing localized uneven heating of the hot air blown out of the air outlet 12 and improving the user experience. The uniform heat exchange process makes the temperature field within the combustion chamber 20 and the heat exchange cavity 30 more stable, avoiding adverse effects on equipment components caused by localized overheating or excessive temperature fluctuations.

[0046] As a further improvement to this utility model, please refer to Figure 3The heat exchange chamber 30 includes a first chamber 33 and a second chamber 34. The first chamber 33 is connected to the air outlet 32, and the second chamber 34 is connected to the air inlet 31. A partition 35 is provided between the first chamber 33 and the second chamber 34, and the partition 35 is sleeved on the outside of the combustion section 221. By setting the heat exchange chamber 30 to include a first chamber 33 and a second chamber 34, the first chamber 33 and the second chamber 34 are separated by the partition 35, and the partition 35 is sleeved on the outside of the combustion section 221. The first chamber 33 is directly connected to the air outlet 32, so that the high-temperature gas generated after the fuel combustion in the combustion section 221 enters the first chamber 33 after passing through the inclined surface of the opening end 21 of the combustion chamber 20, and is finally discharged from the air outlet 32. The second chamber 34 is connected to the air inlet 31, and outside air enters the second chamber 34 through the air inlet 31, flows in a certain way in the second chamber 34, and enters the combustion section 221 to provide the oxygen required for the combustion reaction. The first chamber 33 and the second chamber 34 are separated by a partition 35, allowing the air entering the combustion chamber 221 and the exhaust gas to flow along independent and clearly defined paths. This effectively prevents exhaust gas from mixing with the air to be burned, ensuring that the air entering the combustion chamber 221 always has a suitable oxygen content and purity. This allows the fuel to mix fully and stably with the air for combustion, greatly improving combustion efficiency and reducing problems such as incomplete combustion and the generation of harmful gases. This enhances the performance and environmental friendliness of the parking heater. The first chamber 33 is connected to the air outlet 32, allowing sufficient space and time for the high-temperature gas generated during combustion to exchange heat with the chamber walls, facilitating heat recovery and utilization. The clearly defined and interconnected chamber structure enhances the overall stability of the equipment, avoiding problems such as abnormal heating of components and unstable pressure caused by disordered gas mixing and chaotic flow. It also reduces the risk of safety accidents caused by abnormal combustion and high-temperature gas leakage, ensuring the safety of the parking heater during operation, extending its service life, and reducing maintenance and replacement costs.

[0047] As a further improvement to this utility model, please refer to Figure 4The parking heater further includes a secondary heat exchanger 40, which is fixedly connected to the heat exchange chamber 30. The bottom of the secondary heat exchanger 40 is provided with a heat exchange groove 41, which is arranged around the bottom edge of the secondary heat exchanger 40. The sidewall of the heat exchange chamber 30 is provided with a heat exchange channel 36 along the axial direction. The heat exchange channel 36 includes a first heat exchange channel 361 and a second heat exchange channel 362 arranged adjacent to each other. The first heat exchange channel 361 connects the first chamber 33 and the heat exchange groove 41, and the second heat exchange channel 362 connects the heat exchange groove 41 and the air outlet 32. By providing the secondary heat exchanger 40 and the corresponding heat exchange channel 36, and with the heat exchange groove 41 at the bottom of the secondary heat exchanger 40 arranged around the bottom edge, a specific space is provided for the secondary heat exchange of high-temperature gas. The heat exchange channel 36, which is axially arranged on the side wall of the heat exchange chamber 30, is composed of an adjacent first heat exchange channel 361 and a second heat exchange channel 362. The first heat exchange channel 361 connects the first chamber 33 with the heat exchange tank 41 of the secondary heat exchange element 40, so that the high-temperature gas flowing out of the first chamber 33 after combustion can smoothly enter the heat exchange tank 41. The second heat exchange channel 362 connects the heat exchange tank 41 and the gas outlet 32, so that the high-temperature gas after being reheated by the heat exchange tank 41 can flow along this channel to the gas outlet 32 ​​for discharge. After high-temperature gas is generated by combustion in the combustion section 221, the gas first enters the first chamber 33 for initial heat exchange, exchanging heat with the inner wall of the first chamber 33. While its temperature decreases, it still carries heat energy. Subsequently, this high-temperature gas flows through the first heat exchange channel 361 into the heat exchange tank 41 of the secondary heat exchanger 40. In the heat exchange tank 41, the high-temperature gas undergoes another round of heat exchange with the wall of the heat exchange tank 41, further releasing heat and causing the gas temperature to decrease again. After this secondary heat exchange process, the further cooled high-temperature gas flows through the second heat exchange channel 362 to the outlet 32 ​​for discharge, completing the entire heat exchange and exhaust process. Compared to the traditional structure with only one heat exchange, this design allows for a more complete release and utilization of the heat carried by the high-temperature gas. More heat can be transferred to the air to be heated, improving the overall heat utilization rate of the parking heater. This allows for the output of more heat energy with the same fuel consumption, enhancing the heating effect of the equipment and providing a warmer environment for users.

[0048] As a further improvement to this utility model, please refer to Figure 2 and Figure 3The bottom end of the second cavity 34 is provided with a first impeller 341, which includes a first intake part 3411 and a first outlet part 3412, and the first intake part 3411 and the first outlet part 3412 are connected. The bottom end of the second cavity 34 is also provided with an annular groove 342, which is disposed opposite to the first intake part 3411 and is connected to the air inlet 31. The first impeller 341, which includes a first intake part 3411 and a first outlet part 3412, is provided at the bottom end of the second cavity 34 and the two are connected to each other to form an air circulation channel. An annular groove 342 is provided at the bottom of the second cavity 34. The annular groove 342 is positioned opposite to the first intake section 3411 of the first impeller 341, and the annular groove 342 is connected to the air inlet 31, allowing air to flow along a specific path. Outside air enters the annular groove 342 through the air inlet 31, and then, due to the rotation of the first impeller 341, the air is drawn from the annular groove 342 into the first intake section 3411 of the first impeller 341. After passing through the internal channel of the impeller, the air flows out from the first outlet section 3412 and then flows to the combustion section 221, providing the necessary air for the combustion reaction. Through the orderly intake, sorting, and delivery of air by the first impeller 341, combined with the air-gathering effect of the annular groove 342, the air entering the combustion section 221 can be made more uniform, stable, and with controllable flow rate. This helps the fuel and air mix in a more ideal ratio, making the combustion reaction more stable, greatly improving the completeness of combustion, and ensuring that the parking heater can work stably and efficiently during long-term operation, continuously providing heat to the outside world.

[0049] As a further improvement of this utility model, a gas pipe 222 is sleeved at the bottom end of the combustion section 221, and an oil storage tank 223 is provided between the gas pipe 222 and the combustion section 221. An oil inlet pipe 2231 is connected to the oil storage tank 223. The gas pipe 222 includes an air inlet end 2221 and an air outlet end 2222. The air inlet end 2221 faces the first air outlet section 3412, and the air outlet end 2222 extends into the interior of the combustion section 221. A baffle 2223 is provided at the bottom of the air inlet end 2221, and a connecting piece 2224 is radially provided on the edge of the baffle 2223. The baffle 2223 is connected to the air inlet end 2221 through the connecting piece 2224. By sleeved with an air pipe 222 at the bottom of the combustion section 221, a key channel for air delivery in the combustion system is provided. The air pipe 222 has an air inlet end 2221 and an air outlet end 2222. An oil storage tank 223 is provided between the air pipe 222 and the combustion section 221. The oil storage tank 223 is connected to an external oil supply system through an oil inlet pipe 2231 to store and continuously replenish fuel. The air inlet end 2221 of the air pipe 222 faces the first air outlet 3412 of the first impeller 341 and can receive the air discharged from the first air outlet 3412. Its air outlet end 2222 extends into the interior of the combustion section 221 to deliver air to the core area of ​​the combustion section 221. A baffle 2223 is provided at the bottom of the air inlet 2221. A connecting piece 2224 is radially arranged on the edge of the baffle 2223. The baffle 2223 is connected to the air inlet 2221 through the connecting piece 2224. The baffle 2223 rectifies the air entering the air pipe 222. When the air discharged from the first air outlet 3412 flows towards the air inlet 2221 of the air pipe 222, the air velocity and direction are not uniform. The baffle 2223 can block some of the chaotic airflow, so that the air passes through the baffle. After the baffle 2223, the air enters the air pipe 222 more smoothly and orderly. The connecting piece 2224 firmly connects the baffle 2223 to the air inlet 2221, ensuring that the baffle 2223 will not easily fall off or shift under airflow impact, thus ensuring its normal function. On the other hand, the radial arrangement of the connecting piece 2224 also helps to disperse the impact force of the airflow on the baffle 2223, allowing the baffle 2223 to withstand the airflow force more stably and maintain the stability of the structure. In the actual working process, external fuel is continuously supplied to the oil storage tank 223 for storage through the fuel inlet pipe 2231. At the same time, the first impeller 341 rotates, drawing air in from the annular groove 342 and discharging it through the first air outlet 3412. The air then flows to the air inlet 2221 of the air pipe 222. At the air inlet 2221, after being rectified by the baffle 2223, the air becomes more regular and then enters the air pipe 222, flowing along the internal channel of the air pipe 222 towards the air outlet 2222. During this process, air mixes with fuel in fuel tank 223 and is ignited by ignition device 2211, initiating a stable combustion process and providing a continuous source of heat energy for the parking heater.The coordinated operation of the baffle plate 2223, the connecting plate 2224, the air pipe 222, and the oil reservoir 223 optimizes the preparation process of air and fuel before combustion, making the air and fuel entering the combustion chamber 221 mix more evenly and fully, resulting in more stable and efficient combustion, and improving the overall heating performance of the parking heater.

[0050] As a further improvement of this utility model, the parking heater also includes a motor 50, which is positioned close to the air inlet 11. The motor 50 includes a first output shaft 51 and a second output shaft 52 arranged coaxially, with the first output shaft 51 connected to the first impeller 341. By positioning the motor 50 close to the air inlet 11, it is beneficial for the motor 50 to better utilize the space near the air inlet 11, and it also facilitates its coordinated operation with related components. The motor 50 has a first output shaft 51 and a second output shaft 52 arranged coaxially, and its dual-shaft structure design enables it to drive multiple components simultaneously. The first output shaft 51 is connected to the first impeller 341, meaning that when the motor 50 rotates, it can directly transmit power to the first impeller 341 through the first output shaft 51, driving the first impeller 341 to rotate. When the parking heater starts operating, the first output shaft 51 rotates after the motor 50 starts. The first impeller 341 rotates along with the first output shaft 51. The rotation of the first impeller 341 generates a low-pressure zone through its first intake section 3411 during rotation. It relies on the pressure difference to draw in outside air through the annular groove 342 and then discharge it through the first exhaust section 3412, so that the air can enter the air pipe 222 in an orderly manner. Finally, it provides a stable and continuous air supply to the combustion section 221, ensuring that the fuel and air can be fully mixed during combustion, thereby achieving stable and efficient combustion and laying the foundation for the equipment to generate heat energy.

[0051] As a further improvement of this utility model, the parking heater further includes a second impeller 53, which is connected to the second output shaft 52. The second impeller 53 includes a second intake section 531 and a second outlet section 532 that are interconnected, with the second intake section 531 facing the air inlet 11. The second impeller 53 in the parking heater obtains its power source by being connected to the second output shaft 52 of the motor 50, and rotates when the motor 50 starts running. Since the second intake section 531 of the second impeller 53 is arranged facing the air inlet 11, a low-pressure area is formed near the second intake section 531 when the impeller rotates. Under the influence of external air pressure, outside air is continuously drawn into the second intake section 531 of the second impeller 53 through the air inlet 11. The air then passes through interconnected channels inside the second impeller 53 and is discharged from the second outlet section 532. This discharged air becomes the air to be heated inside the parking heater, flowing to the heat exchange chamber 30 for heat exchange, thus initiating the subsequent heating process. By actively drawing air in through the air inlet 11 via the second impeller 53, compared to natural air intake, a more stable and sufficient supply of air to be heated is ensured for the parking heater, avoiding problems such as poor heating effect due to insufficient air, and improving the heating performance and reliability of the equipment.

[0052] As a further improvement of this utility model, heat-absorbing ribs 37 are provided on the exterior of both the heat exchange cavity 30 and the secondary heat exchange component 40. By providing heat-absorbing ribs 37 on the exterior of both the heat exchange cavity 30 and the secondary heat exchange component 40, the contact area between the heat exchange cavity 30 and the air to be heated is increased, thereby better absorbing heat. The heat-absorbing ribs 37 on the exterior of the heat exchange cavity 30 extend into the first cavity 33, allowing the heat-absorbing ribs 37 to directly contact the high-temperature gas generated after combustion in the first cavity 33, further improving the heat absorption effect of the heat exchange cavity 30. When the fuel in the combustion section 221 burns and generates high-temperature gas, the high-temperature gas enters the first cavity 33 for heat exchange. The heat-absorbing ribs 37 extending into the first cavity 33 utilize their large surface area to fully contact the high-temperature gas, absorbing heat from the gas through thermal conduction. The heat is transferred along the ribs 37 to their portion located outside the heat exchange cavity 30. Similarly, the heat-absorbing ribs 37 outside the secondary heat exchange component 40 increase their contact area with the air to be heated, absorbing heat dissipated during the secondary heat exchange process. This heat absorbed by the ribs 37 is transferred to the air to be heated entering from the air inlet 11 and flowing through the outside of the heat exchange cavity 30, raising the temperature of the air and achieving effective heat utilization and transfer, thus improving the overall heating effect of the parking heater. The distribution of the heat-absorbing ribs 37 outside the heat exchange cavity 30 and the secondary heat exchange component 40 allows for more even heat transfer from the high-temperature gas to the air to be heated, improving heat exchange efficiency. This reduces fuel consumption to achieve the same heating effect, achieving energy savings. Simultaneously, more efficient heat utilization also helps reduce harmful gas emissions caused by incomplete combustion, playing a positive role in environmental protection and meeting the energy-saving and environmentally friendly requirements of heating equipment.

[0053] As a further improvement of this utility model, an ignition device 2211 is also provided on the outside of the combustion section 221. The ignition device 2211 includes a heating rod (not shown) that extends into the oil reservoir 223. By extending the heating rod into the oil reservoir 223, the ignition device 2211 can directly act on the fuel, greatly improving the reliability of ignition. When the parking heater starts working, the ignition device 2211 is powered, energizing the heating rod. Due to its own heating properties, the heat generated by the heating rod is transferred to the combustible mixture formed by the fuel and air in the oil reservoir 223, triggering a combustion reaction. This results in a continuous and stable combustion state within the combustion section 221, releasing a large amount of heat energy. This lays the foundation for the subsequent heat exchange and external heat output of the entire parking heater. Ignition by extending the heating rod into the oil reservoir 223 through the ignition device 2211 ensures a high ignition success rate and enhances the safety of equipment operation. To avoid safety hazards such as fuel leakage and deflagration caused by improper ignition, the combustion process is started and carried out in a controllable state, ensuring that the entire parking heater is in a safe and stable state during operation.

[0054] As a further improvement of this utility model, the outer wall of the housing 10 is provided with a mounting plate 13, which is fixedly connected to the heat exchange chamber 30. The air inlet 31, the air outlet 32, and the oil inlet pipe 2231 all pass through the mounting plate 13 and are exposed to the outside of the housing 10. The mounting plate 13, installed on the outer wall of the housing 10, together with the housing 10, forms a closed and orderly overall structure. The housing 10 provides external protection for the entire parking heater, while the mounting plate 13 further fixes the heat exchange chamber 30 and other components on the housing 10, and rationally arranges the air inlet 31, the air outlet 32, and the oil inlet pipe 2231, ensuring the structural stability of the parking heater and the reasonable installation positions of each component, making the appearance and internal structure of the parking heater more regular and orderly. The mounting plate 13 is fixedly connected to the heat exchange chamber 30, ensuring that the heat exchange chamber 30 is securely installed on the housing 10. This ensures that the air inlet 31 and air outlet 32 ​​on the heat exchange chamber 30 can be accurately connected to the outside world, facilitating the normal entry and exit of air and exhaust gas. Together with the heat exchange chamber 30, they complete the heat exchange and related gas flow functions, ensuring that the air can smoothly participate in combustion after entering through the air inlet 31. The exhaust gas generated by combustion is discharged through the air outlet 32, and fuel is supplied to the oil storage tank 223 through the oil inlet pipe 2231 for combustion. This ensures the smooth connection of all working links inside the entire parking heater and realizes the function of external heating.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A parking heater, characterized in that, include: The housing has an air inlet and an air outlet. A combustion chamber is disposed inside the housing. The combustion chamber includes an open end and a closed end. The open end is oriented toward the air outlet and includes a high side and a low side. The end face of the open end is inclined. The closed end is provided with a combustion section. The heat exchange cavity is a hollow structure and is located between the shell and the combustion chamber. The side wall of the heat exchange cavity is provided with an air inlet and an air outlet. The air inlet is connected to the combustion section, and the air outlet is located on the high side of the opening end.

2. The parking heater according to claim 1, characterized in that: The heat exchange chamber includes a first chamber and a second chamber. The first chamber is connected to the air outlet, and the second chamber is connected to the air inlet. A partition is provided between the first chamber and the second chamber, and the partition is sleeved on the outside of the combustion section.

3. The parking heater according to claim 2, characterized in that: The parking heater also includes a secondary heat exchanger, which is fixedly connected to the heat exchange chamber. The bottom of the secondary heat exchanger is provided with a heat exchange groove, which is arranged around the bottom edge of the secondary heat exchanger. The heat exchange cavity has heat exchange channels arranged axially along its sidewalls, and the heat exchange channels include a first heat exchange channel and a second heat exchange channel arranged adjacent to each other. The first heat exchange channel connects the first cavity and the heat exchange tank, and the second heat exchange channel connects the heat exchange tank and the air outlet.

4. The parking heater according to claim 2, characterized in that: The bottom end of the second cavity is provided with a first impeller, which includes a first suction part and a first discharge part, and the first suction part is connected to the first discharge part; The bottom end of the second cavity is also provided with an annular groove, which is disposed opposite to the first air intake and is connected to the air inlet.

5. The parking heater according to claim 4, characterized in that: The bottom end of the combustion unit is fitted with a gas pipe, and an oil storage tank is provided between the gas pipe and the combustion unit. An oil inlet pipe is connected to the oil storage tank. The air pipe includes an air inlet and an air outlet, the air inlet facing the first air outlet and the air outlet extending into the interior of the combustion chamber; The bottom of the air intake is provided with a baffle plate, and a connecting piece is radially provided on the edge of the baffle plate. The baffle plate is connected to the air intake through the connecting piece.

6. The parking heater according to claim 3, characterized in that: The parking heater also includes a motor, which is located near the air inlet. The motor includes a first output shaft and a second output shaft arranged coaxially, and the first output shaft is connected to the first impeller.

7. The parking heater according to claim 6, characterized in that: The parking heater also includes a second impeller, which is connected to the second output shaft; The second impeller includes a second intake section and a second outlet section that are interconnected, with the second intake section facing the air inlet.

8. The parking heater according to claim 3, characterized in that: Both the exterior of the heat exchange cavity and the exterior of the secondary heat exchanger are provided with heat-absorbing ribs, with the heat-absorbing ribs on the exterior of the heat exchange cavity extending into the first cavity.

9. The parking heater according to claim 5, characterized in that: An ignition device is also provided outside the combustion section. The ignition device includes a heating rod that extends into the oil storage tank.

10. The parking heater according to claim 5, characterized in that: The outer wall of the shell is provided with an mounting plate, which is fixedly connected to the heat exchange cavity; The air inlet, the air outlet, and the oil inlet pipe all pass through the mounting plate and are exposed outside the housing.

Images