A fuel heating device for extremely cold highlands and a low-temperature starting control method thereof

Abstract

The application discloses an extremely cold highland fuel heating device and a low-temperature starting control method thereof, and relates to the technical field of boilers.The extremely cold highland fuel heating device comprises a rack, a gas heater is fixedly installed on the inside upper side of the rack, and a hot air outlet for delivering hot air is arranged at the rear end of the gas heater;an air outlet temperature control sensor is arranged at the front end of the hot air outlet; a controller is arranged at the head of the gas heater; a controller heating sheet is arranged in the controller; an oil pump is fixedly installed on one side of the bottom of the rack, an oil pump heater is wrapped and installed on the outside of the oil pump; and an eddy current fan is fixedly installed below the gas heater in the inside of the rack.The eddy current fan+the gas heater+the air inlet temperature sensor+the air outlet temperature sensor combination has the characteristics of large power, rapid heating, uniform air outlet, long air delivery, and automatic temperature control function; and the system key components are provided with an electric heating system, so that the system can still stably operate under the condition of an extremely cold highland of-70 DEG C.

Description

Technical Field

[0001] This invention relates to the field of boiler technology, specifically to a fuel-fired heating device for extremely cold plateaus and its low-temperature start-up control method. Background Technology

[0002] Heating devices are commonly used for winter heating and raising ambient temperature, widely applied in homes, offices, and various special low-temperature environments. Their core performance directly determines heating efficiency, safety, and applicability. Currently available heating devices suffer from numerous intractable technical defects in practical applications, severely limiting their performance and applicability. These defects are as follows:

[0003] Firstly, the fan system is poorly designed, using a single fan for both combustion and heat dissipation. Furthermore, the fan itself is weak, resulting in low air volume and short air delivery distance. This design leads to incomplete mixing of air and fuel during combustion, resulting in low combustion efficiency and fuel waste. Simultaneously, the heat dissipation process cannot achieve efficient heat transfer, significantly reducing the overall heating effect and making it difficult to meet the needs of large-area or rapid heating.

[0004] Secondly, the material of the heat exchange chamber has significant shortcomings. Existing devices mostly use aluminum heat exchange chambers, but aluminum has poor high-temperature resistance and is prone to melting and deformation in high-temperature heat exchange environments. This can not only damage the equipment structure but also potentially cause safety hazards. Due to this material limitation, the power limit of existing heating devices is greatly reduced, reaching a maximum of only 5kW, which cannot meet the needs of high-power heating scenarios and has a very limited scope of application.

[0005] Third, the existing heating devices have poor adaptability to low-temperature environments. In extreme low-temperature conditions, such as below -50°C, ignition becomes difficult. Extreme low temperatures reduce the sensitivity of the ignition system and decrease fuel activity, making it difficult to achieve rapid and stable ignition. This makes them unsuitable for heating needs in high-altitude or cold regions or special low-temperature scenarios, greatly limiting the application scenarios of the products.

[0006] In summary, existing heating devices suffer from limitations due to fan structure, heat exchange chamber material, and low-temperature ignition performance, resulting in low combustion efficiency, poor heat dissipation, limited power, and inability to operate normally in extreme low-temperature environments. Therefore, there is an urgent need to design a fuel-fired heating device for extremely cold plateaus and its low-temperature start-up control method to address these issues. Summary of the Invention

[0007] In view of this, to solve the technical problems of existing heating devices such as unreasonable fan structure, poor high-temperature resistance of heat exchange chamber material, limited power, and difficulty in ignition and normal operation in extreme low-temperature environments, this invention provides a high-power gas heater. By adopting a stainless steel heat exchange chamber, it solves the defects of traditional aluminum chambers that are prone to melting and deformation at high temperatures, greatly improving the high-temperature resistance of the equipment, enabling the device power to reach 10kW, and adapting to the needs of high-power heating scenarios. By setting a large-diameter air outlet, combined with a separate vortex fan to achieve air delivery and heat exchange, it effectively increases the air volume and air delivery distance, resulting in high heat exchange efficiency and high heating power, and completely improves the problems of incomplete combustion and poor heat dissipation caused by the shared fan in traditional devices. At the same time, key components are equipped with electric heating devices, which can achieve rapid and stable start-up in low-temperature environments, and can still operate normally under extreme low-temperature conditions of -70℃, greatly expanding the applicability of the device. The structure is reasonable and the overall performance is excellent.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an extremely cold plateau fuel-fired heating device, comprising a frame, wherein a gas heater is fixedly installed on the upper side of the inside of the frame, and an air outlet for conveying hot air is provided at the rear end of the gas heater; and an air outlet temperature control sensor is provided at the front end of the air outlet.

[0009] The gas heater is equipped with a controller at its head; the controller is equipped with a controller heating element inside.

[0010] An oil pump is fixedly installed on one side of the bottom of the frame, and an oil pump heater is installed on the outside of the oil pump.

[0011] A vortex fan is fixedly installed inside the frame, located directly below the gas heater. A vortex fan heating element is installed on the outside of the vortex fan. An air inlet temperature sensor is fixedly installed at the air inlet end of the vortex fan.

[0012] The gas heater is also fixedly equipped with a gas supply fan at its front end, and the gas supply fan is covered with a heater.

[0013] The outlet air temperature control sensor and the inlet air temperature sensor transmit temperature data to the controller. The controller controls the gas heater, oil pump, vortex fan, and air supply fan to start and stop through wiring harnesses to achieve heating. The controller controls the start and stop of the heater of the air supply fan, the controller heating element, the oil pump heater, and the vortex fan heating element.

[0014] As a preferred embodiment of the present invention, the gas heater includes a finned heating cavity inside.

[0015] As a preferred embodiment of the present invention, the front end of the gas heater is connected to an air inlet filter element for supplying gas to the gas heater via a pipe.

[0016] As a preferred embodiment of the present invention, the air inlet end of the vortex fan is equipped with a detachable fan cover, which covers the outside of the air inlet temperature sensor.

[0017] As a preferred embodiment of the present invention, an oil tank is fixedly installed in the lower corner of the interior of the frame. The oil tank is connected to the oil pump through an oil delivery pipe, and a level gauge is installed on the oil tank.

[0018] As a preferred embodiment of the present invention, the frame adopts a rectangular frame structure made of square steel, and a number of spliced ​​thin sealing plates are installed on the outside of the frame.

[0019] As a preferred embodiment of the present invention, both the oil pump heater and the heater outside the air supply fan are provided with heater interfaces for plugging in and connecting to power supply, and both are packaged and enclosed installation structures.

[0020] As a preferred embodiment of the present invention, one end of the controller heating element and the vortex fan heating element is led out through a heating element connector via a wire, and both the controller heating element and the vortex fan heating element adopt a soft-coated heating structure.

[0021] As a preferred embodiment of the present invention, handles are installed on the upper parts of both sides of the frame, and a plurality of casters are provided at the bottom of the frame;

[0022] A CAN instrument and switch are installed on one side of the upper part of the rack;

[0023] A filler port and a liquid level display are provided on the middle of one side of the frame;

[0024] The lower side of the frame is equipped with a heater air inlet, an exhaust outlet, a CAN signal output interface, and a power interface.

[0025] A low-temperature start-up control method for a fuel-fired heating device for extremely cold plateaus, comprising the aforementioned fuel-fired heating device for extremely cold plateaus, including the following steps:

[0026] S1, Power-on initialization: Connect an external power source through the power interface, the controller performs a power-on self-test, and reads real-time data from the intake air temperature sensor and the outlet air temperature control sensor.

[0027] S2, Low Temperature Judgment and Preheating: The controller determines whether the ambient temperature is lower than the preset low temperature threshold; if so, the controller first controls the electric heating system to be turned on. The electric heating system includes the controller heating element, the oil pump heater, the vortex fan heating element, and the heater outside the air supply fan to preheat the core components.

[0028] S3, Combustion preparation: When the preheating time reaches the preset value or the temperature of the relevant components is detected to meet the start-up requirements, the controller starts the air supply fan to send air into the gas heater, and at the same time starts the oil pump to draw fuel from the fuel tank and deliver it to the combustion chamber.

[0029] S4, Ignition and heating: The gas heater is ignited and combusted to heat the internal finned heating cavity;

[0030] S5, heat exchange air supply: The controller starts the vortex fan to draw in cold outside air and flow through the high-temperature finned heating cavity for heat exchange. The heated air is blown out from the air outlet to achieve heating.

[0031] S6, Closed-loop constant temperature control: During the heating process, the controller automatically adjusts the heating power of the gas heater and the speed of the vortex fan according to the feedback signal of the outlet air temperature control sensor to maintain the set outlet air temperature.

[0032] Compared with the prior art, the present invention provides a fuel-fired heating device for extremely cold plateaus and its low-temperature start-up control method, which has the following beneficial effects:

[0033] 1. This extremely cold plateau fuel-fired heating device and its low-temperature start-up control method adopt a combination of vortex fan + gas heater + inlet air temperature sensor + outlet air temperature sensor, which has the characteristics of high power, rapid heating, uniform air output, and long air delivery, and has an automatic temperature control function; the key components of the system are equipped with an electric heating system, which enables the system to operate stably even in extremely cold plateau conditions of -70℃; it has an internal independent fuel supply system, which can run independently for more than 10 hours after being filled with fuel, and has a compact and reasonable structure and small size.

[0034] 2. This extremely cold plateau fuel-fired heating device and its low-temperature start-up control method significantly improves heat exchange efficiency and high-temperature resistance by using a finned heating cavity instead of a traditional aluminum cavity, enabling the overall power of the device to reach 10kW, meeting the demand for high-power heating. At the same time, combustion and heat dissipation adopt independent air supply fans and vortex fans, realizing the separation control of combustion air and heat dissipation airflow, ensuring complete fuel combustion and long-distance heat transmission, effectively solving the problems of low combustion efficiency and short air supply distance of traditional devices, and further improving the comprehensive heating performance in extreme environments. Attached Figure Description

[0035] Figure 1 This is a perspective view of the overall structure of the present invention;

[0036] Figure 2 This is a left view of the overall structure of the present invention;

[0037] Figure 3 This is a rear view of the overall structure of the present invention;

[0038] Figure 4 This is a right view of the overall structure of the present invention;

[0039] Figure 5 This is a cross-sectional view of the overall structure of the present invention;

[0040] Figure 6 This is an internal diagram of the gas heater structure of the present invention;

[0041] Figure 7 This is a schematic diagram of the heater structure of the present invention;

[0042] Figure 8 This is a schematic diagram of the heating element structure of the present invention;

[0043] Figure 9 This is the control flowchart of the present invention.

[0044] In the diagram: 1. Handle; 2. CAN instrument; 3. Switch; 4. Filler neck; 5. Liquid level display; 6. Exhaust port; 7. Casters; 8. Air inlet; 9. CAN signal output interface; 10. Power interface; 11. Outlet air temperature control sensor; 12. Air outlet; 13. Gas heater; 131. Finned heating chamber; 14. Controller; 15. Controller heating element; 16. Inlet air filter; 17. Oil pump; 18. Oil pump heater; 19. Vortex fan; 20. Vortex fan heating element; 21. Inlet air temperature sensor; 22. Fan cover; 23. Oil tank; 24. Liquid level gauge; 25. Air supply fan; 26. Frame; 27. Thin sealing plate; 28. Heater interface; 29. ​​Heating element connector. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Please see Figures 1-9This invention discloses a fuel-fired heating device for extremely cold plateaus and its low-temperature start-up control method, comprising a frame 26, a gas heater 13 fixedly installed on the upper side inside the frame 26, an air outlet 12 for conveying hot air provided at the rear end of the gas heater 13; an air outlet temperature control sensor 11 provided at the front end of the air outlet 12; a controller 14 provided at the head of the gas heater 13; a controller heating element 15 provided inside the controller 14; an oil pump 17 fixedly installed on one side of the bottom of the frame 26, an oil pump heater 18 externally covered by the oil pump 17; and a vortex fan 19 fixedly installed inside the frame 26, located directly below the gas heater 13. The fan 19 is externally covered with a vortex fan heating element 20, and an intake temperature sensor 21 is fixedly installed at the intake end of the vortex fan 19. A gas supply fan 25 is also fixedly installed at the front end of the gas heater 13, and a heater is externally covered with the gas supply fan 25. The outlet temperature control sensor 11 and the intake temperature sensor 21 transmit temperature data to the controller 14. The controller 14 controls the opening and closing of the gas heater 13, the oil pump 17, the vortex fan 19, and the gas supply fan 25 through wiring harnesses to achieve heating. The controller 14 controls the opening and closing of the heater of the gas supply fan 25, the controller heating element 15, the oil pump heater 18, and the vortex fan heating element 20.

[0047] Please see Figure 1 , 4 5. The unit includes a frame 26, on the upper side of which a gas heater 13 is fixedly mounted. The gas heater 13 includes a finned heating chamber 131. An air inlet filter 16 for supplying gas to the gas heater 13 is connected to the front end of the gas heater 13 via a pipe. An air outlet 12 for delivering hot air is provided at the rear end of the gas heater 13; an air outlet temperature control sensor 11 is provided at the front end of the air outlet 12.

[0048] In this embodiment, the finned heating chamber 131 is made of high-temperature resistant stainless steel, which can maintain structural stability in high-temperature environments and avoid melting and deformation, thereby supporting long-term operation at a high power of 10kW; the outlet air temperature control sensor 11 is set at the front end of the air outlet 12 to monitor the temperature of the output hot air in real time; the air inlet filter 16 can effectively filter impurities and particulate matter in the air, ensuring that the air entering the gas heater 13 is clean, improving combustion efficiency and extending the service life of the equipment.

[0049] Please see Figure 1 , 34. A controller 14 is provided at the head of the gas heater 13; a controller heating element 15 is provided inside the controller 14; an oil pump 17 is fixedly installed on one side of the bottom of the frame 26, and an oil pump heater 18 is installed on the outside of the oil pump 17; a vortex fan 19 is fixedly installed inside the frame 26, located directly below the gas heater 13, and a vortex fan heating element 20 is installed on the outside of the vortex fan 19; an inlet temperature sensor 21 is fixedly installed at the air inlet end of the vortex fan 19; a detachable fan cover 22 is installed at the air inlet end of the vortex fan 19, which covers the outside of the inlet temperature sensor 21. A gas supply fan 25 is also fixedly provided at the front end of the gas heater 13, and a heater is installed on the outside of the gas supply fan 25; both the oil pump heater 18 and the heater on the outside of the gas supply fan 25 are provided with heater interfaces 28 for connecting to power supply, and both are packaged and installed in a covered structure. One end of the controller heating element 15 and the vortex fan heating element 20 is led out through the heating element connector 29 via a wire. Both the controller heating element 15 and the vortex fan heating element 20 adopt a soft-covered heating structure.

[0050] In this embodiment, the controller 14 serves as the control core of the device, coordinating the operation of various components through an internal program. In extremely cold environments, the controller 14 can first control the activation of various electric heating components to preheat the controller 14, oil pump 17, vortex fan 19, and air supply fan 25, ensuring that they maintain normal operating temperature in an environment of -70℃. The vortex fan 19 is specifically used for heat dissipation and heat exchange, and can powerfully blow the heated air to the air outlet 12 to achieve long-distance air supply and heating.

[0051] Please see Figure 1 , 3 The outlet air temperature control sensor 11 and the inlet air temperature sensor 21 transmit temperature data to the controller 14. The controller 14 controls the gas heater 13, oil pump 17, vortex fan 19 and air supply fan 25 to achieve heating through wiring harnesses. The controller 14 controls the heater of air supply fan 25, controller heating element 15, oil pump heater 18 and vortex fan heating element 20 to start and stop.

[0052] In this embodiment, through the closed-loop control of the aforementioned sensor and controller 14, the device can achieve fully automatic temperature regulation. When the outlet air temperature control sensor 11 detects that the outlet air temperature deviates from the set value, the controller 14 automatically adjusts the heating power of the gas heater 13 and the speed of the vortex fan 19 to maintain a constant outlet air temperature. At the same time, the ambient temperature fed back by the inlet air temperature sensor 21 is used to trigger the low-temperature heating logic. When the ambient temperature is extremely low, each heating element is automatically activated to ensure reliable start-up and stable operation of the system under extremely cold conditions of -70℃.

[0053] Please refer to the figure. An oil tank 23 is fixedly installed in the lower corner of the inside of the frame 26. The oil tank 23 is connected to the oil pump 17 through an oil supply pipe. A level gauge 24 is installed on the oil tank 23.

[0054] In this embodiment, the fuel tank 23 is used to store fuel. The fuel pump 17 draws fuel from the fuel tank 23 through the fuel pipeline and pressurizes and delivers it to the combustion chamber of the gas heater 13. The level gauge 24 detects the remaining fuel in the fuel tank 23 in real time and displays it intuitively through the level display table 5 on one side of the frame 26, so that the user can replenish fuel in time through the fuel filler port 4 and ensure that the device can operate continuously and independently for more than 10 hours.

[0055] Please see Figure 1 , 2 4. The frame 26 adopts a rectangular frame structure made of square steel, and several spliced ​​thin sealing plates 27 are installed on the outside of the frame 26.

[0056] In this embodiment, the frame 26 adopts a rectangular frame structure made of square steel, which has the advantages of high strength, light weight and strong torsion resistance, and can adapt to the transportation of complex road conditions in the plateau. The thin sealing plate 27 is spliced ​​and wrapped around the outside of the frame 26, which not only plays a role in protection and heat preservation, but also facilitates quick disassembly and provides sufficient operating space for the inspection and maintenance of internal core components.

[0057] Please see Figure 2 Handles 1 are installed on the upper sides of both sides of the frame 26, and several casters 7 are installed at the bottom of the frame 26. The handles 1 and casters 7 work together to give the whole machine excellent mobility, which is convenient for short-distance movement and deployment in high-altitude and field environments. The casters 7 are preferably heavy-duty swivel casters and are equipped with brake components, which can lock securely during operation to prevent accidental slippage and ensure safe use. A CAN instrument 2 and a switch 3 are installed on the upper side of one side of the frame 26; an oil filler 4 and a liquid level display 5 are installed in the middle of one side of the frame 26; and a heater air inlet 8, an exhaust port 6, a CAN signal output interface 9, and a power interface 10 are installed on the lower side of one side of the frame 26.

[0058] In this embodiment, the aforementioned operating components, interfaces, and instruments are centrally arranged on the same side of the frame 26, forming a centralized operating area, which facilitates power supply access, fuel filling, exhaust emission, operation status monitoring, and external communication for users; the CAN instrument 2 is used to display temperature, oil level, and equipment status information, the CAN signal output interface 9 supports connection with a remote terminal to realize data uploading and remote control, and the power interface 10 is used to connect to an external power source to provide working power for the whole machine.

[0059] A low-temperature start-up control method for a fuel-fired heating device for extremely cold plateaus, comprising a fuel-fired heating device for extremely cold plateaus, including the following steps:

[0060] S1, Power-on initialization: Connect the external power supply through the power interface 10, the controller 14 performs a power-on self-test, and reads the real-time data of the intake air temperature sensor 21 and the outlet air temperature control sensor 11.

[0061] S2, Low Temperature Judgment and Preheating: Controller 14 determines whether the ambient temperature is lower than the preset low temperature threshold; if so, controller 14 first controls the start of the electric heating system, which includes the controller heating element 15, oil pump heater 18, vortex fan heating element 20, and heaters outside the air supply fan 25, to preheat the core components; the low temperature threshold is -50℃; when the ambient temperature detected by the intake air temperature sensor 21 is lower than -50℃, controller 14 forcibly starts the electric heating system until the temperature of each component rises to the normal operating range; controller 14 sends the preheating status, start-up progress, and operating data to CAN instrument 2 for display through CAN communication interface 9, and supports receiving control commands from remote terminals through CAN communication interface 9 to realize remote low temperature start-up and monitoring;

[0062] S3, Combustion preparation: When the preheating time reaches the preset value or the temperature of the relevant components is detected to meet the start-up requirements, the controller 14 starts the air supply fan 25 to send air into the gas heater 13, and at the same time starts the oil pump 17 to draw fuel from the oil tank 23 and deliver it to the combustion chamber.

[0063] S4, Ignition and heating: Gas heater 13 is ignited and combusted to heat the internal finned heating cavity 131;

[0064] S5, heat exchange air supply: The controller 14 starts the vortex fan 19, which draws in the cold outside air and flows through the high-temperature finned heating cavity 131 for heat exchange. The heated air is blown out from the air outlet 12 to achieve heating.

[0065] S6, Closed-loop constant temperature control: During the heating process, the controller 14 automatically adjusts the heating power of the gas heater 13 and the speed of the vortex fan 19 according to the feedback signal of the outlet air temperature control sensor 11 to maintain the set outlet air temperature; after S6, there is also a shutdown and purging step: when it is necessary to shut down, the controller 14 controls the gas heater 13 to shut down and shuts down the oil pump 17 and the air supply fan 25; the vortex fan 19 continues to run for a preset time to purge the residual heat in the finned heating cavity 131 to prevent the internal components from aging due to high temperature, and then controls the vortex fan 19 to stop running and disconnects the power supply of the whole machine.

[0066] The working principle and usage process of this invention: When the boiler is working in an extremely cold environment, the device is connected to an external power source through the power interface 10, and sufficient fuel is added to the oil tank 23 through the fuel filler port 4. The device is started by turning on the switch 3. The controller 14 is powered on and initialized, reading the data from the inlet air temperature sensor 21 and the outlet air temperature control sensor 11. If the ambient temperature is detected to be extremely low (e.g., below -50℃), the controller 14 first turns on each electric heating component to preheat the oil pump 17, the controller 14, the vortex fan 19, and the air supply fan 25.

[0067] After heating to the preset temperature, the gas heater 13 starts to ignite. The oil pump 17 pumps fuel into the oil inlet of the gas heater 13. The vortex fan 19 starts to work, drawing in cold air and delivering it to the heat exchange chamber of the gas heater 13. The gas heater 13 ignites and burns, heating the finned heating chamber 131. The air is then blown out through the air outlet 12 after passing through the heating chamber heater, thus achieving the purpose of heating.

[0068] There is an exhaust temperature control sensor 11 inside the air outlet 12. The oil volume of the gas heater 13 is adjusted in real time according to the exhaust temperature, thereby adjusting the exhaust temperature. When the intake temperature reaches the set temperature, the gas heater 13 stops working; when the temperature is lower than the set temperature, the gas heater 13 starts.

[0069] When shutdown is required, a command is sent through switch 3, and controller 14 controls gas heater 13 to shut down, oil pump 17 and gas supply fan 25 to stop working, vortex fan 19 continues to run for a period of time to blow away residual heat before shutdown, and finally disconnect the power supply.

[0070] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0071] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fuel-fired heating device for extremely cold plateaus, comprising a frame (26), characterized in that: A gas heater (13) is fixedly installed on the upper side of the inside of the frame (26). The gas heater (13) has an air outlet (12) for conveying hot air at its rear end. An air outlet temperature control sensor (11) is provided at the front end of the air outlet (12). The gas heater (13) is equipped with a controller (14) at its head; the controller (14) is equipped with a controller heating element (15) inside. An oil pump (17) is fixedly installed on one side of the bottom of the frame (26), and an oil pump heater (18) is installed on the outside of the oil pump (17). The frame (26) is fixedly installed with a vortex fan (19) located directly below the gas heater (13). The vortex fan (19) is covered with a vortex fan heating element (20). The air inlet end of the vortex fan (19) is fixedly installed with an air inlet temperature sensor (21). The gas heater (13) is also fixedly provided with a gas supply fan (25) at the front end, and the gas supply fan (25) is covered with a heater. The outlet temperature control sensor (11) and the inlet temperature sensor (21) transmit temperature data to the controller (14). The controller (14) controls the gas heater (13), oil pump (17), vortex fan (19), and gas supply fan (25) to start and stop through wiring harnesses to achieve heating. The controller (14) controls the heater of the gas supply fan (25), the controller heating element (15), the oil pump heater (18), and the vortex fan heating element (20) to start and stop.

2. The fuel-fired heating device for extremely cold plateaus according to claim 1, characterized in that: The interior of the gas heater (13) includes a finned heating chamber (131).

3. The fuel-fired heating device for extremely cold plateaus according to claim 1, characterized in that: The front end of the gas heater (13) is connected by a pipe to an air inlet filter (16) for supplying gas to the gas heater (13).

4. The fuel-fired heating device for extremely cold plateaus according to claim 1, characterized in that: The vortex fan (19) has a removable fan cover (22) installed at the air inlet end, which covers the outside of the air inlet temperature sensor (21).

5. The fuel-fired heating device for extremely cold plateaus according to claim 1, characterized in that: An oil tank (23) is fixedly installed in the lower corner of the inside of the frame (26). The oil tank (23) is connected to the oil pump (17) through an oil pipeline. A level gauge (24) is installed on the oil tank (23).

6. The fuel-fired heating device for extremely cold plateaus according to claim 1, characterized in that: The frame (26) adopts a rectangular frame structure made of square steel, and several spliced ​​thin sealing plates (27) are installed on the outside of the frame (26).

7. The fuel-fired heating device for extremely cold plateaus according to claim 1, characterized in that: The oil pump heater (18) and the external heater of the air supply fan (25) are both equipped with heater interfaces (28) for plugging in and connecting to power supply, and both are packaged and installed in a covered structure.

8. The fuel-fired heating device for extremely cold plateaus according to claim 1, characterized in that: One end of the controller heating element (15) and the vortex fan heating element (20) is led out through the heating element connector (29) by a wire. Both the controller heating element (15) and the vortex fan heating element (20) adopt a soft-covered heating structure.

9. A fuel-fired heating device for extremely cold plateaus according to claim 1, characterized in that: Handles (1) are installed on the upper part of both sides of the frame (26), and several casters (7) are provided at the bottom of the frame (26). A CAN instrument (2) and a switch (3) are provided on one side of the rack (26); A filling port (4) and a liquid level display (5) are provided on the middle of one side of the frame (26). The lower side of the frame (26) is provided with a heater air inlet (8), an exhaust port (6), a CAN signal output interface (9), and a power interface (10).

10. A low-temperature start-up control method for an extremely cold plateau fuel-fired heating device, comprising the extremely cold plateau fuel-fired heating device as described in any one of claims 1-9, characterized in that: Includes the following steps: S1, power-on initialization: connect the external power supply through the power interface (10), the controller (14) performs a power-on self-test, and reads the real-time data of the intake air temperature sensor (21) and the exhaust air temperature control sensor (11); S2, Low temperature determination and preheating: The controller (14) determines whether the ambient temperature is lower than the preset low temperature threshold; if so, the controller (14) first controls the start of the electric heating system, which includes the controller heating element (15), the oil pump heater (18), the vortex fan heating element (20), and the heater outside the air supply fan (25) to preheat the core components. S3, Combustion preparation: When the preheating time reaches the preset value or the temperature of the relevant components is detected to meet the start-up requirements, the controller (14) starts the air supply fan (25) to send air into the gas heater (13), and at the same time starts the oil pump (17) to extract fuel from the oil tank (23) and deliver it to the combustion chamber; S4, Ignition and heating: The gas heater (13) is ignited and combusted to heat the internal finned heating cavity (131). S5, heat exchange air supply: The controller (14) starts the vortex fan (19), which draws in the outside cold air and flows through the high-temperature finned heating cavity (131) for heat exchange. The heated air is blown out from the air outlet (12) to achieve heating. S6, Closed-loop constant temperature control: During the heating process, the controller (14) automatically adjusts the heating power of the gas heater (13) and the speed of the vortex fan (19) according to the feedback signal of the outlet air temperature control sensor (11) to maintain the set outlet air temperature.

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