Safe warm air blower for indoor temperature rise and use method of safe warm air blower

Abstract

The invention relates to the technical field of warm air blowers, and discloses a safe warm air blower for indoor temperature rise and a using method thereof.The safe warm air blower comprises a base, an outer barrel is fixedly arranged at the top of the base, a fuel oil inner barrel is arranged on the inner side of the outer barrel, and the two ends of the outer side of the fuel oil inner barrel are fixedly connected with connecting plates used for supporting the fuel oil inner barrel. The inner adjusting plate and the outer adjusting plate are matched with the elastic structure to adjust the opening degree of the corresponding air inlet according to the air pressure, and the inner adjusting plate is matched with the variable resistance mechanism to adjust the corresponding opening degree of the proportional valve, so that the flow of fuel sprayed by the fuel spray nozzle corresponds to the flow of air actually entering the fuel oil inner cylinder; carbon deposition and fuel waste caused by insufficient fuel combustion due to the fact that the air flow is smaller than a rated value or fluctuation is reduced are avoided, the distribution amount is increased by adjusting the magnetic force of the electromagnet when the corresponding air flow channel needs to be cooled in an accelerated mode, cooling is accelerated, and the use safety of the fan heater is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of air heaters, and in particular to a safe air heater for indoor heating and a use method thereof. Background Art

[0002] A heater is a heating device that heats the airflow by burning fuel and sends out hot air. Existing direct-fired heaters include an oil pump and a fan. The fan is arranged in the outer cylinder of the heater. The gap between the outer cylinder of the fan and the inner cylinder of the fuel is a heat dissipation channel. When the airflow blown by the fan passes through the inner cylinder of the fuel, it is heated by the combustion of the oil sprayed by the fuel injector, forming a warm airflow. The warm air is discharged from the outlet of the inner cylinder of the fuel, and the cold air continuously enters the inner cylinder from the air inlet. Part of the airflow is discharged from the outlet of the inner cylinder through the heat dissipation channel to cool the inner cylinder.

[0003] However, during the use of traditional direct-fired heaters, the air flow input to the fuel inner cylinder is easily disturbed, or the aging of the fan and the carbon deposits in the fuel inner cylinder cause the input air flow to decrease, resulting in the actual air flow being less than the rated value or the input air flow fluctuating during operation, causing incomplete combustion of part of the fuel, aggravating carbon deposits and fuel waste. At the same time, it is difficult to distribute the air flow in the heat dissipation channel, and the air flow through the fuel inner cylinder and the heat dissipation channel can only be increased at the same time. It is difficult to keep the air flow in the fuel inner cylinder within the rated range when the heat dissipation needs to be increased to avoid bringing out the oil flame and increasing the heat dissipation of the outer cylinder. Users are prone to burns if they accidentally touch the high-temperature outer cylinder during operation. Summary of the invention

[0004] In view of the shortcomings of the existing paint heating devices mentioned in the background technology during use, the present invention provides a safe heater for indoor heating and a method of using the same, which has the advantages of adjusting the oil flow rate according to the air flow rate and facilitating the cleaning of the liquid remaining in the fuel injector nozzle, thereby solving the technical problems raised in the above-mentioned background technology.

[0005] The present invention provides the following technical solution: a safe air heater for indoor heating, comprising a base, an outer cylinder is fixedly arranged on the top of the base, a fuel inner cylinder is arranged on the inner side of the outer cylinder, both ends of the outer side of the fuel inner cylinder are fixedly connected with connecting plates for supporting the fuel inner cylinder, the connecting plate is fixedly connected to the outer cylinder, one end of the inner side of the fuel inner cylinder is fixedly connected with a connecting seat, one end of the connecting seat is fixedly connected with a fixing plate, one end of the fixing plate is fixedly connected with an inner baffle, one end of the fuel inner cylinder is fixedly connected with an intermediate baffle, an air inlet of the fuel inner cylinder is formed between the intermediate baffle and the inner baffle, one end of the inner wall of the outer cylinder is fixedly connected with an outer baffle matched with the intermediate baffle, and a heat dissipation channel for the outer cylinder to pass airflow is formed between the inner wall of the outer cylinder and the outer wall of the fuel inner cylinder;

[0006] An inner adjustment plate for closing the air inlet of the fuel inner cylinder is provided at one end of the inner side of the fuel inner cylinder, an outer adjustment plate for the air inlet of the heat dissipation channel is provided at one end of the inner side of the fuel inner cylinder, and an adjustment mechanism is fixedly provided at one end of the inner side of the outer cylinder. The adjustment mechanism is used to drive the inner adjustment plate and the outer adjustment plate to move according to the size of the air pressure and adjust the fuel flow rate according to the movement of the inner adjustment plate. When the air pressure increases, the opening of the corresponding air inlet is increased by making the inner adjustment plate and the outer adjustment plate click, and the fuel flow rate is correspondingly increased, so that the corresponding fuel flow rate increases when the air flow rate increases.

[0007] Preferably, the adjustment mechanism comprises a fixed block, the inner baffle is fixedly connected to the fixed block, the top and bottom surfaces of the fixed block are slidably connected to a No. 1 guide rod, both sides of the fixed block are slidably sleeved with a No. 2 guide rod, the outer side of the fixed block is fixedly connected with a guide block, the number of the guide blocks is set to be several and two by two are in a group corresponding to the No. 1 guide rod and the No. 2 guide rod respectively;

[0008] The No. 1 guide rod and the No. 2 guide rod are respectively slidably connected with the corresponding guide blocks, and the guide blocks are used to guide the sliding of the No. 1 guide rod and the No. 2 guide rod. The No. 1 guide rod is fixedly connected to the inner adjustment plate, and the No. 2 guide rod is fixedly connected to the outer adjustment plate.

[0009] Preferably, an electromagnet is fixedly provided on one side of the fixed block, a permanent magnet cooperating with the electromagnet is fixedly provided on one side of the No. 2 guide rod, the acting force between the electromagnet and the permanent magnet is an attractive force, one end of the No. 1 guide rod is fixedly connected to a spring, and one end of the spring is fixedly connected to the inner baffle.

[0010] Preferably, a fuel injector is fixedly sleeved on one side of the connecting seat, a fuel tank is fixedly arranged at the bottom of the base, a fuel pump is fixedly arranged on one side of the top of the fuel tank, an output end of the fuel pump is connected to a fuel injection pipe, one end of the fuel injection pipe is fixedly connected to the fuel injector, the fuel pump is connected to the fuel tank through an oil inlet pipe and an oil return pipe, and a proportional valve is fixedly installed on one end of the fuel injection pipe;

[0011] The regulating mechanism also includes a variable resistance mechanism, which adjusts the opening of the proportional valve according to the movement of the inner regulating plate. When the inner regulating plate moves to increase the opening of the corresponding air inlet, the resistance of the variable resistance mechanism decreases, thereby increasing the opening of the proportional valve.

[0012] Preferably, the variable resistance mechanism includes a conductive block and two resistance rods, one end of the resistance rod is fixedly connected to the inner baffle plate, the conductive block is fixedly connected to the No. 1 guide rod, the conductive block is slidably sleeved with the resistance rod, one end of the two resistance rods close to the inner baffle plate is connected to the circuit and connected in series with the proportional valve, and when the conductive block moves close to the inner baffle plate, the resistance of the two resistance rods connected to the circuit is reduced.

[0013] Preferably, a fan is fixedly provided on one side of the outer cylinder, a temperature sensor is provided on one side of the base, and a controller is fixedly provided on one side of the base, and the controller controls the rotation speed of the fan through feedback from the temperature sensor.

[0014] Preferably, a solenoid valve No. 1 is fixedly installed on one side of the fuel injection pipe, and the solenoid valve No. 1 and the electromagnet are electrically connected to the controller. When the detected temperature reaches the rated value, the magnetic force of the electromagnet is reduced. When shutting down, the magnetic force of the electromagnet is increased and the solenoid valve No. 1 is closed to distribute the air flow in the fuel inner cylinder and the heat dissipation channel.

[0015] Preferably, an exhaust pipe is fixedly provided on one side of the inner baffle, one end of the exhaust pipe is connected to the fuel injector, a No. 2 solenoid valve is fixedly installed on one end of the exhaust pipe, the No. 2 solenoid valve is electrically connected to the controller, and one end of the exhaust pipe is connected to the inner side of the outer cylinder.

[0016] A method for using a safe air heater for indoor heating, characterized in that it comprises the following steps:

[0017] S1: Start the fan, open the No. 1 solenoid valve, and adjust the fan speed according to the temperature detected by the temperature sensor;

[0018] S2: The air pressure on one side of the fan increases. The inner and outer adjustment plates move under the action of air pressure to open the fuel inner cylinder air inlet and the heat dissipation channel air inlet respectively. The inner adjustment plate drives the resistance value of the variable resistance mechanism to decrease, the proportional valve opening increases, and the oil flow rate sprayed by the fuel injector corresponds to the actual air flow rate entering the fuel inner cylinder.

[0019] S3: When the detected temperature is greater than the rated value, the magnetic force of the electromagnet is reduced, the speed of the fan is increased, the air flow in the fuel inner cylinder is kept within the rated range, the air flow in the fuel inner cylinder is increased, and the heat dissipation efficiency of the outer cylinder is improved;

[0020] S4: When the machine is stopped, the magnetic force of the electromagnet is increased, and the electromagnet attracts the permanent magnet to drive the outer adjustment plate to move and close the air inlet of the heat dissipation channel, close the No. 1 solenoid valve, open the No. 2 solenoid valve, and let the air be discharged from the outlet of the fuel injector through the exhaust pipe to clean the fuel injector;

[0021] S5: The fan speed decreases, and the inner adjustment plate returns to its original position under the action of the spring force to close the air inlet of the fuel inner cylinder. The air is discharged from the outlet of the fuel injector through the exhaust pipe, and the fuel injector continues to be cleaned.

[0022] S6: The fan stops, the oil pump stops, and the No. 2 solenoid valve is closed until the next use.

[0023] The present invention has the following beneficial effects:

[0024] 1. The present invention drives the inner adjustment plate to close the air inlet of the fuel inner cylinder through a spring in cooperation with a No. 1 guide rod, and drives the outer adjustment plate to close the air inlet of the heat dissipation channel through an electromagnet in cooperation with a permanent magnet and a No. 2 guide rod. When the fan speed increases, the air pressure increases, and the inner adjustment plate and the outer adjustment plate are pushed to open with corresponding openings respectively. The inner adjustment plate drives the conductive block of the variable resistance mechanism to move at the same time, so that the resistance value is reduced, thereby increasing the current of the proportional valve, and the proportional valve opening increases by a corresponding proportion, so that the flow rate of the sprayed oil increases accordingly. In the process of active adjustment or passive fluctuation of the air pressure, the oil flow rate is always corresponding to the air flow rate entering the fuel inner cylinder, so as to avoid incomplete combustion of the oil, which aggravates carbon deposition and wastes fuel.

[0025] 2. The present invention adjusts the size of the magnetic force of the electromagnet. When the detected temperature reaches the rated value, the magnetic force is reduced to increase the opening of the external regulating valve, thereby increasing the fan speed, and keeping the air flow through the fuel inner cylinder within the rated range. At the same time, the air flow through the heat dissipation inner cylinder is distributed and increased, thereby reducing the temperature of the outer cylinder and improving the safety of the heater. When the heater is shut down, the magnetic force of the electromagnet is increased to close the heat dissipation channel, so that the air flow only passes through the fuel inner cylinder, thereby accelerating the heat dissipation of the workpiece in the fuel inner cylinder. At the same time, the exhaust pipe is opened and the fuel injection pipe is closed, and the air flow of the increased distribution amount is discharged from the fuel injector through the exhaust pipe, thereby cleaning the residual oil and possible carbon particles in the fuel injector, avoiding oil deterioration and fuel injector clogging, thereby increasing the service life of the heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a cross-sectional schematic diagram of the structure of the fan of the present invention;

[0028] Figure 3 For the present invention Figure 2 A magnified view of the structure at A;

[0029] Figure 4 It is a schematic cross-sectional view of the overall structure of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the electromagnet of the present invention.

[0031] In the figure: 1. outer cylinder; 2. fuel inner cylinder; 3. connecting seat; 4. fuel injector; 5. fixing plate; 6. inner baffle; 7. middle baffle; 8. outer baffle; 9. fixing block; 10. guide rod No. 1; 11. guide rod No. 2; 12. guide block; 13. inner adjustment plate; 14. outer adjustment plate; 15. electromagnet; 16. permanent magnet; 17. spring; 18. fuel injection pipe; 19. exhaust pipe; 20. solenoid valve No. 1; 21. connecting plate; 22. solenoid valve No. 2; 23. resistance rod; 24. conductive block; 25. proportional valve; 26. fan; 27. controller; 28. fuel tank; 29. ​​base; 30. fuel pump. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1

[0034] See also Figure 1-Figure 5 , a safe air heater for indoor heating, comprising a base 29, an outer cylinder 1 is fixedly arranged on the top of the base 29, a fuel inner cylinder 2 is arranged on the inner side of the outer cylinder 1, both ends of the outer side of the fuel inner cylinder 2 are fixedly connected with connecting plates 21 for supporting the fuel inner cylinder 2, one end of the connecting plate 21 is fixedly connected to the inner wall of the outer cylinder 1, one end of the inner side of the fuel inner cylinder 2 is fixedly connected with a connecting seat 3, one side of the connecting seat 3 is fixedly sleeved with a fuel injector 4, one end of the connecting seat 3 is fixedly connected with a fixing plate 5, one end of the fixing plate 5 is fixedly connected with an inner baffle 6, one end of the fuel inner cylinder 2 is fixedly connected with an intermediate baffle 7, an air inlet of the fuel inner cylinder 2 is formed between the intermediate baffle 7 and the inner baffle 6, and the air inlet of the fuel inner cylinder 2 is annular, one end of the inner wall of the outer cylinder 1 is fixedly connected with an outer baffle 8 cooperating with the intermediate baffle 7, a heat dissipation channel for the outer cylinder 1 to pass through is formed between the inner wall of the outer cylinder 1 and the outer wall of the fuel inner cylinder 2, and an air inlet of the heat dissipation channel is formed between the outer baffle 8 and the intermediate baffle 7.

[0035] A fixed block 9 is fixedly connected at the midpoint of one side of the inner baffle 6, and one side of the top and bottom surfaces of the fixed block 9 is slidably connected to a No. 1 guide rod 10, and both sides of the fixed block 9 are slidably sleeved with a No. 2 guide rod 11, and the outer side of the fixed block 9 is fixedly connected with a guide block 12, and the number of guide blocks 12 is set to be several and two groups correspond to the No. 1 guide rod 10 and the No. 2 guide rod 11 respectively, and the No. 1 guide rod 10 and the No. 2 guide rod 11 are slidably sleeved with the corresponding guide blocks 12, and the guide blocks 12 are respectively connected to the No. 1 guide rod 10 and the No. 2 guide rod 11. The sliding of the guide rod 11 is used for guiding. One end of the guide rod 10 is fixedly connected with an inner adjustment plate 13 for closing the air inlet of the fuel inner cylinder 2. One end of the guide rod 11 is fixedly connected with an outer adjustment plate 14 for closing the air inlet of the heat dissipation channel. The cross-sectional shape of the inner adjustment plate 13 and the outer adjustment plate 14 is wedge-shaped, so that the air inlet of the fuel inner cylinder 2 is closed when the inner adjustment plate 13 is against the middle baffle 7 and the inner baffle 6. The shapes of the contact surfaces of the middle baffle 7 and the inner baffle 6 with the inner adjustment plate 13 are all adapted to the inner adjustment plate 13.

[0036] When the inner adjustment plate 13 moves away from the middle baffle 7 and the inner baffle 6, the air inlet of the fuel inner cylinder 2 is opened, and as the moving distance of the inner adjustment plate 13 increases, the opening of the air inlet of the fuel inner cylinder 2 becomes larger, and when the outer adjustment plate 14 abuts against the middle baffle 7 and the outer baffle 8, the heat dissipation channel is closed, and the shapes of the contact surfaces of the middle baffle 7 and the outer baffle 8 with the outer adjustment plate 14 are adapted to the outer adjustment plate 14, and when the outer adjustment plate 14 moves away from the middle baffle 7 and the outer baffle 8, the air inlet of the heat dissipation channel is opened, and as the moving distance of the inner adjustment plate 13 increases, the opening of the air inlet of the heat dissipation channel becomes larger. The larger the degree, an electromagnet 15 is fixedly provided on one side of the fixed block 9, a permanent magnet 16 cooperating with the electromagnet 15 is fixedly provided on one side of the No. 2 guide rod 11, and the acting force between the electromagnet 15 and the permanent magnet 16 is an attractive force, which is used to cooperate with the No. 2 guide rod 11 to drive the outer adjustment plate 14 to move toward the heat dissipation channel. A spring 17 is fixedly connected to one end of the No. 1 guide rod 10, and one end of the spring 17 is fixedly connected to the inner baffle 6. The spring 17 cooperates with the No. 1 guide rod 10 to drive the inner adjustment plate 13 to move toward the air inlet of the fuel inner cylinder 2.

[0037] A fan 26 is fixedly provided at one end of the inner side of the outer cylinder 1. The fan 26 generates airflow when it works. The air pressure on the outer adjustment plate 14 and the inner adjustment plate 13 near the fan 26 increases. When the air pressure is greater than the elastic force of the spring 17 and the attraction between the electromagnet 15 and the permanent magnet 16, the inner adjustment plate 13 and the outer adjustment plate 14 are pushed. The initial elastic force of the spring 17 is equal to the attraction between the electromagnet 15 and the permanent magnet 16. The airflow enters the fuel inner cylinder 2 through the fuel inner cylinder inlet 2 and the fuel injector 4 respectively. After the sprayed fuel is ignited, it heats the air in the fuel inner cylinder 2 to form warm air, and part of the airflow dissipates heat to the outer cylinder 1 through the heat dissipation channel. A fuel tank 28 is fixedly arranged at the bottom of the base 29, and an oil pump 30 is fixedly arranged on one side of the top of the fuel tank 28. The output end of the fuel pump 30 is connected to the fuel injection pipe 18, and one end of the fuel injection pipe 18 is fixedly connected to the fuel injector 4. The fuel pump 30 is connected to the fuel tank 28 through the oil inlet pipe and the oil return pipe. When the oil pressure in the oil pump 30 is higher than the rated value, the oil returns to the fuel tank 28 through the oil return pipe.

[0038] A proportional valve 25 is fixedly installed at one end of the injection pipe 18. The proportional valve 25 is an electromagnetic proportional valve, and the opening of the proportional valve 25 increases as the current flowing through it increases. A variable resistance mechanism is fixedly arranged on one side of the inner baffle plate 6 near the bottom. Specifically, the variable resistance mechanism includes a conductive block 24 and two resistor rods 23. One end of the resistor rod 23 is fixedly connected to the inner baffle plate 6, and the conductive block 24 is fixedly connected to the No. 1 guide rod 10. The conductive block 24 is slidably sleeved with the resistor rod 23. One end of the two resistor rods 23 close to the inner baffle plate 6 is connected to the circuit and is connected in series with the proportional valve 25. The inner adjustment plate 13 overcomes the elastic force of the spring 17 under the action of air pressure and moves to open the air inlet of the fuel inner cylinder 2. The inner adjustment plate 13 drives the No. 1 guide rod 10 to move, and the No. 1 guide rod 10 drives the conductive block 24 to move. The conductive block 24 connects the two resistor rods 23.

[0039] The conductive block 24 moves closer to the inner baffle 6, the resistance of the two resistor rods 23 connected to the circuit decreases, the circuit voltage remains unchanged, the current passing through the proportional valve 25 increases, the opening of the proportional valve 25 increases, thereby increasing the oil flow rate sprayed from the injector 4, and the oil flow rate sprayed from the injector 4 increases as the opening of the air inlet of the fuel inner cylinder 2 opened by the inner adjustment plate 13 increases, that is, as the speed of the fan 26 increases within the rated range, the inner adjustment plate 13 and the outer adjustment plate 14 move, the opening of the air inlet of the fuel inner cylinder 2 increases by the inner adjustment plate 13, and the actual air flow rate entering the fuel inner cylinder 2 increases, and at the same time drives the conductive block 24 to slide to reduce the resistance of the variable resistance mechanism, increase the opening of the proportional valve 25, and increase the flow rate of the oil sprayed from the injector 4 synchronously, and increase the efficiency of heating air, so that the oil flow rate sprayed from the injector 4 is adapted to the actual air flow rate, avoiding air flow fluctuations that lead to partial incomplete combustion of the oil and aggravate carbon deposition, thereby ensuring the combustion efficiency of the oil.

[0040] Embodiment 2

[0041] See also Figure 2-Figure 5 On the basis of the first embodiment, it also includes a temperature sensor, which is fixedly arranged on one side of the base 29. The temperature sensor can also be arranged at the temperature detection position in the room as needed. A controller 27 is fixedly arranged on one side of the base 29. The controller 27 controls the rotation speed of the fan 26 through the feedback of the temperature sensor, thereby adjusting the flow rate of the oil sprayed by the fuel injector 4 according to the temperature. During the adjustment process, the actual air flow rate is always adapted to the oil flow rate. The electromagnet 15 is electrically connected to the controller 27. The controller 27 controls the flow rate flowing through the electromagnet 15. When the detected temperature reaches the rated value, the fuel injector 4 sprays the oil at the rated flow rate, so that the magnetic force between the electromagnet 15 and the permanent magnet 16 is reduced, and the rotation speed of the fan 26 is increased. The air flow rate in the fuel inner cylinder 2 changes within the rated range to avoid air Excessive flow drives the oil flame to spray out of the fuel inner cylinder 2, and the air flow through the heat dissipation channel increases, and the heat dissipation efficiency of the outer cylinder 1 is increased when the heating efficiency is increased. While ensuring that the air flow in the fuel inner cylinder 2 is within the rated range, the heat dissipation of the outer cylinder 1 is accelerated to avoid excessive temperature of the outer cylinder 1, thereby avoiding accidental burns to users and improving the safety of the heater. A solenoid valve No. 1 20 is fixedly installed on one side of the fuel injection pipe 18. When the machine is shut down, the solenoid valve No. 1 20 is closed and the fuel injector 4 stops spraying oil. After that, the magnetic force of the electromagnet 15 is increased to make the electromagnet 15 attract the permanent magnet 16. The permanent magnet 16 drives the outer adjustment plate 14 to move and close the air inlet of the heat dissipation channel, so that the airflow generated by the rotation of the fan blades of the fan 26 enters the fuel inner cylinder 2 only from the air inlet of the fuel inner cylinder 2, thereby improving the heat dissipation efficiency of the workpiece inside the fuel inner cylinder 2.

[0042] Embodiment 3

[0043] See also Figure 2-Figure 5 On the basis of the second embodiment, an exhaust pipe 19 is fixedly provided on one side of the inner baffle plate 6, one end of the exhaust pipe 19 is connected to the fuel injector 4, a No. 2 solenoid valve 22 is fixedly installed on one end of the exhaust pipe 19, the No. 2 solenoid valve 22 is electrically connected to the controller 27, one end of the exhaust pipe 19 is connected to the inner side of the outer cylinder 1, when the machine is shut down, the No. 1 solenoid valve 20 is closed and the No. 2 solenoid valve 22 is opened, so that the airflow can discharge the remaining oil in the fuel injector 4 through the exhaust pipe 19 to avoid the residual oil from deteriorating. At the same time, the air inlet of the heat dissipation channel is closed to improve the efficiency of the airflow through the exhaust pipe 19 and the cleaning efficiency. The wind force of the fan 26 is reduced until the air inlet of the fuel inner cylinder 2 is closed. At this time, the airflow is only discharged from the fuel injector 4 through the exhaust pipe 19 to further ensure the cleaning efficiency. After the fan 26 stops, the oil pump 30 stops.

[0044] A method for using a safe air heater for indoor heating comprises the following steps:

[0045] S1: Start the fan 26, open the No. 1 solenoid valve 20, and adjust the speed of the fan 26 according to the temperature detected by the temperature sensor.

[0046] S2: The air pressure on one side of the fan 26 increases, and the inner adjustment plate 13 and the outer adjustment plate 14 move under the action of the air pressure to open the air inlet of the fuel inner cylinder 2 and the air inlet of the heat dissipation channel respectively. The inner adjustment plate 13 drives the resistance value of the variable resistance mechanism to decrease, and the opening of the proportional valve 25 increases. The oil flow rate sprayed by the injector 4 corresponds to the actual air flow rate entering the fuel inner cylinder 2.

[0047] S3: When the detected temperature is greater than the rated value, the magnetic force of the electromagnet 15 is reduced, and the rotation speed of the fan 26 is increased, so that the air flow in the fuel inner cylinder 2 is maintained within the rated range, the air flow in the fuel inner cylinder 2 is increased, and the heat dissipation efficiency of the outer cylinder 1 is improved.

[0048] S4: When shutting down, the magnetic force of the electromagnet 15 is increased, and the electromagnet 15 attracts the permanent magnet 16 to drive the outer adjustment plate 14 to move and close the air inlet of the heat dissipation channel, close the No. 1 solenoid valve 20, open the No. 2 solenoid valve 22, and allow the air to be discharged from the outlet of the injector 4 through the exhaust pipe 19 to clean the injector 4.

[0049] S5: The speed of the fan 26 decreases, and the inner adjustment plate 13 is reset under the elastic force of the spring 17 to close the air inlet of the fuel inner cylinder 2, and the air is discharged from the outlet of the fuel injector 4 through the exhaust pipe 19, and the fuel injector 4 continues to be cleaned.

[0050] S6: The fan 26 stops, the oil pump 30 stops, and the No. 2 solenoid valve 22 is closed and is ready for next use.

[0051] The method of use (working principle) of the present invention is as follows:

[0052] The controller 27 adjusts the current speed of the fan 26 according to the temperature feedback from the temperature sensor, so that the air pressure changes, so that the inner adjustment plate 13 and the outer adjustment plate 14 respectively adjust the opening sizes of the air inlet of the fuel inner cylinder 2 and the air inlet of the heat dissipation channel according to the air pressure. At the same time, the inner adjustment plate 13 cooperates with the No. 1 guide rod 10 to drive the conductive block 24 to move, so that the resistance value of the resistor rod 23 connected to the circuit is reduced, the current passing through the proportional valve 25 is increased, the opening of the proportional valve 25 is increased, and the flow rate of the oil sprayed from the injector 4 is increased. In the process of active and passive changes in air pressure, the oil flow rate corresponds to the actual current air flow rate passing through the fuel inner cylinder 2.

[0053] When shutting down, close the No. 1 solenoid valve 20 and open the No. 2 solenoid valve 22. The airflow is discharged from the fuel injector 4 through the exhaust pipe 19 to clean the oil in the fuel injector 4 and prevent the residual oil from deteriorating. The magnetic force of the electromagnet 15 is increased so that the electromagnet 15 attracts the permanent magnet 16 to drive the outer adjustment plate 14 to move and close the heat dissipation channel. The airflow can only pass through the fuel inner cylinder 2, which accelerates the heat dissipation of the workpiece in the fuel inner cylinder 2 and increases the air flow through the exhaust pipe 19 to improve the cleaning efficiency.

Claims

1. A safe air heater for indoor heating, comprising a base (29), an outer cylinder (1) is fixedly arranged on the top of the base (29), a fuel inner cylinder (2) is arranged inside the outer cylinder (1), both ends of the outer side of the fuel inner cylinder (2) are fixedly connected with connecting plates (21) for supporting the fuel inner cylinder (2), the connecting plate (21) is fixedly connected to the outer cylinder (1), and one end of the inner side of the fuel inner cylinder (2) is fixedly connected with a connecting seat (3), characterized in that: One end of the connection seat (3) is fixedly connected to a fixing plate (5), one end of the fixing plate (5) is fixedly connected to an inner baffle (6), one end of the fuel inner cylinder (2) is fixedly connected to an intermediate baffle (7), an air inlet of the fuel inner cylinder (2) is formed between the intermediate baffle (7) and the inner baffle (6), one end of the inner wall of the outer cylinder (1) is fixedly connected to an outer baffle (8) matched with the intermediate baffle (7), and a heat dissipation channel for the outer cylinder (1) to pass airflow is formed between the inner wall of the outer cylinder (1) and the outer wall of the fuel inner cylinder (2); An inner adjustment plate (13) for closing the air inlet of the fuel inner cylinder (2) is provided at one end of the inner side of the fuel inner cylinder (2), an outer adjustment plate (14) for the air inlet of the heat dissipation channel is provided at one end of the inner side of the fuel inner cylinder (2), and an adjustment mechanism is fixedly provided at one end of the inner side of the outer cylinder (1), the adjustment mechanism is used to drive the inner adjustment plate (13) and the outer adjustment plate (14) to move according to the size of the air pressure and adjust the fuel flow according to the movement of the inner adjustment plate (13), when the air pressure increases, the opening of the corresponding air inlet is increased by causing the inner adjustment plate (13) and the outer adjustment plate (14) to be clamped, and the fuel flow is increased accordingly, so that the corresponding fuel flow increases when the air flow increases, and the adjustment mechanism can adjust the air inlet opening to distribute the air flow through the fuel inner cylinder (2) and the heat dissipation channel, and when the fuel inner cylinder (2) or the outer cylinder (1) needs to be cooled faster, the corresponding air flow is increased.

2. A safe air heater for indoor heating according to claim 1, characterized in that: The adjustment mechanism comprises a fixed block (9), the inner baffle plate (6) is fixedly connected to the fixed block (9), the top and bottom surfaces of the fixed block (9) are slidably connected to a first guide rod (10), both sides of the fixed block (9) are slidably sleeved with a second guide rod (11), the outer side of the fixed block (9) is fixedly connected to a guide block (12), and the number of the guide blocks (12) is set to be several and two by two in a group respectively corresponding to the first guide rod (10) and the second guide rod (11); The first guide rod (10) and the second guide rod (11) are respectively slidably sleeved with corresponding guide blocks (12), and the guide blocks (12) are used to guide the sliding of the first guide rod (10) and the second guide rod (11). The first guide rod (10) is fixedly connected to the inner adjustment plate (13), and the second guide rod (11) is fixedly connected to the outer adjustment plate (14).

3. A safe air heater for indoor heating according to claim 2, characterized in that: An electromagnet (15) is fixedly arranged on one side of the fixed block (9), a permanent magnet (16) cooperating with the electromagnet (15) is fixedly arranged on one side of the second guide rod (11), the acting force between the electromagnet (15) and the permanent magnet (16) is an attractive force, and a spring (17) is fixedly connected to one end of the first guide rod (10), and one end of the spring (17) is fixedly connected to the inner baffle (6).

4. A safe air heater for indoor heating according to claim 2, characterized in that: A fuel injection nozzle (4) is fixedly sleeved on one side of the connecting seat (3); a fuel tank (28) is fixedly arranged at the bottom of the base (29); a fuel pump (30) is fixedly arranged on one side of the top of the fuel tank (28); an output end of the fuel pump (30) is connected to a fuel injection pipe (18); one end of the fuel injection pipe (18) is fixedly connected to the fuel injection nozzle (4); the fuel pump (30) is connected to the fuel tank (28) through an oil inlet pipe and an oil return pipe; and a proportional valve (25) is fixedly installed on one end of the fuel injection pipe (18); The regulating mechanism also includes a variable resistance mechanism, which regulates the opening of the proportional valve (25) according to the movement of the inner regulating plate (13). When the inner regulating plate (13) moves to increase the opening of the corresponding air inlet, the resistance of the variable resistance mechanism decreases, thereby increasing the opening of the proportional valve (25).

5. A safe air heater for indoor heating according to claim 4, characterized in that: The variable resistance mechanism comprises a conductive block (24) and two resistance rods (23); one end of the resistance rod (23) is fixedly connected to the inner baffle (6); the conductive block (24) is fixedly connected to the first guide rod (10); the conductive block (24) and the resistance rod (23) are slidably sleeved; one end of the two resistance rods (23) close to the inner baffle (6) is connected to the circuit and connected in series with the proportional valve (25); when the conductive block (24) moves close to the inner baffle (6), the resistance of the two resistance rods (23) connected to the circuit is reduced.

6. A safe air heater for indoor heating according to claim 4, characterized in that: A fan (26) is fixedly arranged on one side of the outer cylinder (1), a temperature sensor is arranged on one side of the base (29), and a controller (27) is fixedly arranged on one side of the base (29). The controller (27) controls the rotation speed of the fan (26) through feedback from the temperature sensor.

7. A safe air heater for indoor heating according to claim 6, characterized in that: A first solenoid valve (20) is fixedly installed on one side of the fuel injection pipe (18). The first solenoid valve (20) and the electromagnet (15) are electrically connected to a controller (27). When the detected temperature reaches a rated value, the magnetic force of the electromagnet (15) is reduced. When the machine is shut down, the magnetic force of the electromagnet (15) is increased and the first solenoid valve (20) is closed to distribute the air flow in the fuel inner cylinder (2) and the heat dissipation channel.

8. The safety air heater for indoor heating according to claim 6, characterized in that: An exhaust pipe (19) is fixedly provided on one side of the inner baffle (6), one end of the exhaust pipe (19) is connected to the fuel injector (4), a second solenoid valve (22) is fixedly installed on one end of the exhaust pipe (19), the second solenoid valve (22) is electrically connected to a controller (27), and one end of the exhaust pipe (19) is connected to the inner side of the outer cylinder (1).

9. A method for using a safe air heater for indoor heating according to claim 8, characterized in that: The following steps are involved: S1: Start the fan (26), open the No. 1 solenoid valve (20), and adjust the speed of the fan (26) according to the temperature detected by the temperature sensor; S2: the air pressure on one side of the fan (26) increases, and the inner adjustment plate (13) and the outer adjustment plate (14) move under the action of the air pressure to open the air inlet of the fuel inner cylinder (2) and the air inlet of the heat dissipation channel respectively, the inner adjustment plate (13) drives the resistance value of the variable resistance mechanism to decrease, the opening of the proportional valve (25) increases, and the oil flow rate sprayed by the fuel injection nozzle (4) corresponds to the actual air flow rate entering the fuel inner cylinder (2); S3: When the detected temperature is greater than the rated value, the magnetic force of the electromagnet (15) is reduced, the rotation speed of the fan (26) is increased, the air flow rate in the fuel inner cylinder (2) is kept within the rated range, the air flow rate in the fuel inner cylinder (2) is increased, and the heat dissipation efficiency of the outer cylinder (1) is improved; S4: When the machine is stopped, the magnetic force of the electromagnet (15) is increased, the electromagnet (15) attracts the permanent magnet (16) to drive the outer adjustment plate (14) to move and close the air inlet of the heat dissipation channel, close the No. 1 solenoid valve (20), open the No. 2 solenoid valve (22), and allow the air to be discharged from the outlet of the fuel injector (4) through the exhaust pipe (19), thereby cleaning the fuel injector (4); S5: The speed of the fan (26) decreases, and the inner adjustment plate (13) returns to its original position under the elastic force of the spring (17) to close the air inlet of the fuel inner cylinder (2), and the air is discharged from the outlet of the fuel injection nozzle (4) through the exhaust pipe (19), and the fuel injection nozzle (4) continues to be cleaned; S6: The fan (26) stops, the oil pump (30) stops, and the second solenoid valve (22) is closed, waiting for the next use.

Images