Stoves with air-fuel mixing chamber and tubular vaporization core and their control methods

Abstract

This invention belongs to the technical field of liquid fuel stoves, and particularly relates to a stove with an air-fuel mixing chamber and a tubular vaporization burner. It includes a stove body, a burner core, an injector, and an air-fuel mixing chamber. The tubular heater is located on the outer periphery of the burner core or on the inner wall of the combustion chamber so that the burner core can heat the tubular heater during combustion. Fuel supplied through the tubular heater is directly injected from the injector and / or exported into the mixing chamber to mix with air before being injected into the combustion chamber. By using air and fuel to mix in the mixing chamber, the liquid fuel forms an air-fuel mixture. This fuel-air mixture is pre-combusted in the combustion chamber, resulting in a high combustion rate. Furthermore, the heat generated during combustion heats the tubular heater, causing the air and liquid fuel within the heater to vaporize, thus replacing the existing method of using electric heating to vaporize liquid fuel.

Description

Technical Field

[0001] This invention belongs to the technical field of liquid fuel stoves, and particularly relates to a stove with an air-fuel mixing chamber and a heating tube vaporization core. Background Technology

[0002] After years of development, many alternative fuels are now used not only in the automotive market but also in a wide range of hotels and homes. These include alcohol-based fuels, ethylene glycol, and biomass vegetable oils, which are energy-saving, environmentally friendly, and safer than liquefied petroleum gas (LPG) and other fuels. Due to their inherent properties, alternative fuels can play a significant role in the automotive, hotel, commercial, and residential markets. Traditional alternative fuel stoves come in two types: one with a fan, which consumes a lot of fuel, lacks vaporization, is easily damaged, prone to leakage, and poses a fire hazard; the other is a vaporization stove, which uses direct current, requires continuous electricity, is inconvenient, and suffers from poor combustion. Furthermore, traditional alcohol-based fuels suffer from common problems such as inconvenient heat control, clogged burners, high fuel consumption, and easy oil leaks. Currently, most stoves on the market use electric heating in the stove cavity to vaporize and burn the liquid fuel after reaching its physical calibration value. However, these vaporization stoves suffer from structural leaks and high manufacturing costs, leading to fuel waste and safety hazards. Additionally, electric heating requires continuous AC power, and the temperature rise is affected by the size of the cavity, impacting the user experience. Summary of the Invention

[0003] To address the issues of low heating efficiency and excessive fuel consumption caused by electric heating in the aforementioned vaporization stoves, this invention provides a fuel stove with a heating tube vaporization core featuring an air-fuel mixing chamber.

[0004] This invention is achieved through the following technical solution:

[0005] A stove with an air-fuel mixing chamber and a heating tube vaporization core includes a stove body, a core with a combustion chamber located within the stove body, a tubular heater on the core, and an injector located within the combustion chamber. The combustion chamber also includes an air-fuel mixing chamber. The stove body is also equipped with an oil supply pipe for supplying liquid fuel. One end of the tubular heater is connected to the oil supply pipe, and the other end is connected to the injector within the combustion chamber. The tubular heater is located on the outer periphery of the core body or on the inner wall of the combustion chamber so that the core body can heat the tubular heater when it is burning. The fuel supplied by the tubular heater is directly sprayed from the injector and / or exported into the mixing chamber to mix with air before being sprayed into the combustion chamber.

[0006] As described above, the stove with an air-fuel mixing chamber and a heating tube vaporization core is further provided with a return pipe on the stove body that communicates with the bottom of the combustion chamber, and the return pipe is also provided with a return interface.

[0007] As described above, the stove with an air-fuel mixing chamber and a heating tube vaporization core includes at least a bottom injector erected at the bottom of the combustion chamber and a circumferential injector disposed on the inner circumferential wall of the combustion chamber with its nozzle facing obliquely downward. The bottom injector and the circumferential injector are connected inside the core through the mixing chamber, and the tubular heater is connected to the mixing chamber through a connecting pipe.

[0008] As described above, the stove with an air-fuel mixing chamber and a heating tube vaporization core is further provided with an ignition needle in the combustion chamber. The ignition needle includes a lower ignition needle facing and close to the bottom of the combustion chamber and an upper ignition needle facing and close to the bottom injector.

[0009] The stove with an air-fuel mixing chamber and a heating tube vaporization core, as described above, also includes a temperature sensor located above the combustion chamber.

[0010] As described above, the stove with an air-fuel mixing chamber and a heating tube vaporization core is further provided with an air inlet pipe extending into the mixing chamber and a fan connected to the air inlet pipe on the stove body. The inlet end of the air-fuel mixing chamber is connected to a connecting pipe and an air inlet pipe, and the outlet is connected to an injector.

[0011] The stove with an air-fuel mixing chamber and a heating tube vaporization core as described above, wherein the core comprises an inner core layer and an outer core layer, the inner core layer and the outer core layer being connected by a gap and hollow connection, and the tubular heater is connected to the inner core layer.

[0012] The stove with an air-fuel mixing chamber and a heating tube vaporization core, as described above, also includes a storage device connected to the oil supply pipe and the return pipe.

[0013] As described above, the stove with an air-fuel mixing chamber and a heating tube vaporization core includes a storage device comprising a bottle with an internal fuel storage compartment, an output port on the bottle that connects to the oil supply pipe, and a return port on the bottle that connects to the return pipe. The return port is also provided with a breather valve.

[0014] This application also provides a control method for an air-fuel mixing chamber and a heating tube vaporization stove, including the following steps:

[0015] a. Turn on the storage switch and the power switch. The fan starts and introduces air into the air-fuel mixing chamber in the combustion chamber. Liquid fuel enters the mixing chamber from the storage through the delivery pump, the fuel line, and the tubular heater, and is then input into the combustion chamber from the bottom injector and the circumferential injector.

[0016] b. The upper and lower ignition needles initiate ignition, igniting the mixture of liquid fuel flowing out of the injector and air output from the blower;

[0017] c. If the thermometer detects an increase in the temperature inside the combustion chamber, ignition is successful, and excess liquid fuel at the bottom flows back to the storage tank through the return pipe for recycling.

[0018] d. The tubular heater installed on the combustion chamber is heated by combustion, which vaporizes the liquid fuel inside and the fuel-air mixture in the mixing chamber into fuel gas, and continuously sprays it into the combustion chamber from the bottom injector and the circumferential injector along with the air from the air duct to maintain combustion.

[0019] If the thermometer detects that the temperature inside the combustion chamber has not increased in step c above, the first ignition fails. The upper and lower ignition needles are restarted to start the second or multiple ignitions. At this time, the return valve is closed to prevent the fuel inside the fuel line from flowing back into the storage tank.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. This invention provides a stove with an air-fuel mixing chamber and a heating tube vaporization core. By mixing air and fuel in the mixing chamber, the liquid fuel is formed into an air-fuel mixture. The fuel-air mixture is pre-combusted in the combustion chamber, resulting in a high combustion rate. The heat generated during combustion is used to heat the tube heater, causing the air and liquid fuel inside the tube heater to vaporize. This replaces the existing method of using electric heating to vaporize liquid fuel, solving the problems of single-purpose fans, excessive fuel consumption, and dependence on electricity. Moreover, the mixed air and fuel burn completely, resulting in high heating efficiency. This makes the structure simpler, easier to use, more energy-efficient, and helps to extend the service life while reducing manufacturing costs.

[0022] 2. The stove with an air-fuel mixing chamber and a heating tube vaporization core of the present invention also has the function of recovering excess liquid fuel. Excess fuel flows back to the storage container, saving fuel and avoiding excessive fuel leakage that could cause safety hazards.

[0023] 3. The present invention provides a stove with an air-fuel mixing chamber and a heating tube-type vaporization core. The fuel sprayed by the injector is mixed with the air from the fan and then sprayed downward in an atomized manner. The amount of air from the fan controls the fuel flow rate. The fan can be turned on and off according to the temperature and fuel flow rate, or it can be forcibly turned off. The fuel combustion is more complete, environmentally friendly, energy-saving, and reduces noise. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the stove with an air-fuel mixing chamber and a heating tube vaporization core according to the present invention;

[0026] Figure 2 This is a schematic diagram of the stove with an air-fuel mixing chamber and a heating tube vaporization core according to the present invention. Figure 2 ;

[0027] Figure 3 This is a schematic diagram of the stove core;

[0028] Figure 4 This is a schematic diagram of a fuel storage device;

[0029] Figure 5 This is a schematic diagram of the first embodiment of the stove core;

[0030] Figure 6 Example 1 of the stove core Figure 2 ;

[0031] Figure 7 Example 1 of the stove core Figure 3 ;

[0032] Figure 8 This is a schematic diagram of Embodiment 2 for the stove core;

[0033] Figure 9 This is a schematic diagram of the mixing device. Detailed Implementation

[0034] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0035] This invention is achieved through the following technical solution:

[0036] like Figures 1 to 5As shown, a stove with an air-fuel mixing chamber and a heating tube vaporization core includes a stove body 9, a core body 1 with a combustion chamber 101 located within the stove body, a tubular heater 2 located on the core body 1, and an injector 3 located within the combustion chamber 101. The combustion chamber 101 also contains an air-fuel mixing chamber 701. The stove body 9 also has an oil supply pipe 91 for supplying liquid fuel. One end of the tubular heater 2 is connected to the oil supply pipe, and the other end is connected to the injector 3 within the combustion chamber 101. The tubular heater 2 is located on the outer periphery of the core body 1 or on the inner wall of the combustion chamber 101 so that the core body 1 can heat the tubular heater 2 when it is burning. The fuel supplied by the tubular heater 2 is directly sprayed out from the injector 3 and / or exported into the mixing chamber 701 to mix with air before being sprayed into the combustion chamber. This invention provides a stove with an air-fuel mixing chamber and a heating tube vaporization core. It mixes air and fuel in the mixing chamber, forming an air-fuel mixture from liquid fuel. This mixture is pre-combusted in the combustion chamber, resulting in a high combustion rate. The heat generated during combustion heats the tube heater, vaporizing the air and liquid fuel within it. This replaces the existing method of using electric heating to vaporize liquid fuel, solving the problems of single-purpose fans, excessive fuel consumption, and reliance on electricity. Furthermore, the mixed air and fuel burn completely, resulting in high heating efficiency. This makes the structure simpler, more convenient to use, energy-saving, and improves service life while reducing manufacturing costs.

[0037] Furthermore, the stove body 9 is also provided with a return pipe 92 that communicates with the bottom of the combustion chamber 101, so that excess fuel flows back to the storage container, saving fuel and avoiding excessive fuel injection that could cause safety hazards.

[0038] In addition, the injector 3 includes at least a bottom injector 31 erected at the bottom of the combustion chamber 101 and a circumferential injector 32 located on the inner peripheral wall of the combustion chamber 101 with its nozzle facing downwards. The bottom injector 31 and the circumferential injector 32 are connected inside the stove core body 1 through a mixing chamber 701. The tubular heater 2 is connected to the mixing chamber 701 through a connecting pipe 33. After the stove is started, the oil supply pipe delivers fuel to the tubular heater 2. The fuel flows into the mixing chamber 701 inside the stove core in liquid form. The ignition needle ignites the fuel, and the flame temperature heats the tubular heater. After reaching a certain temperature, the air-fuel mixture begins to vaporize. The vaporized fuel is dispersed upwards and sprayed out by the upper injector. Moreover, multiple injectors are connected through internal pipes, which facilitates fuel supply to the tubular heater, making the structure simpler. In this design, two circumferential injectors are provided and are set at the same height.

[0039] Furthermore, the injector has an injection hole diameter between 0.5 and 1 mm. The vertical injector has a cup channel with injection holes, and a perforated flame cap is installed on the channel. Fuel penetration holes are opened at the contact part between the channel and the bottom of the furnace core. The annular injector injects downward at an angle, and the injector has two or more injection ports.

[0040] In this scheme, the oil pipeline 91 is also equipped with a delivery pump, which is a 6-12V electromagnetic brushless pump that can adjust the flow rate according to the air flow to adjust the firepower.

[0041] In addition, such as Figure 9 As shown, the oil pipeline 91 is also equipped with a return valve and a mixing device 52. The mixing device is used to introduce air and mix the fuel on the oil pipeline before outputting it to the tubular heater 2. Its main function is to pre-mix the fuel and air to form an atomized fuel-air mixture, thereby improving combustion efficiency. Specifically, the mixing device 52 includes a housing 521, a gas chamber 522 disposed within the housing 521, and a mixing chamber 523. An air supply pipe 53 is connected to the gas chamber 522, and an atomizing nozzle is connected to the mixing chamber 523. Several air channels 524 are provided between the gas chamber 522 and the mixing chamber 523. The housing 521 is also provided with a fuel channel 525 communicating with the mixing chamber 523. The air introduced from the air supply pipe and the fuel introduced from the oil pipeline enter the mixing chamber for pre-mixing after passing through the air channels 524 and the fuel channels 525. In this design, the optimal air-to-fuel ratio is controlled between 8 and 14:1.

[0042] Furthermore, the combustion chamber 101 is also equipped with ignition needles, including a lower ignition needle 81 facing and close to the bottom of the combustion chamber 101 and an upper ignition needle 82 facing and close to the bottom injector 31. Since there are multiple injectors, after a period of ignition, fuel ejected from the bottom injector may remain at the bottom. To address this issue, this solution includes a return pipe 92 to maximize the return of fuel from the combustion chamber to the storage tank, thus avoiding fuel waste.

[0043] Additionally, a temperature sensor 7 is located above the combustion chamber 101. The temperature sensor 7 is used to detect the temperature of the flame during combustion in the combustion chamber, and its position facilitates contact with the outer flame.

[0044] Furthermore, the stove body 9 is also equipped with an air inlet duct 71 that extends into the mixing chamber 701 within the combustion chamber 101, and a fan 72 connected to the air inlet duct 71 and mounted on the stove body 9. The fan can be turned on, off, or forcibly shut off according to temperature control and fuel flow regulation, resulting in more complete fuel combustion, environmental friendliness, energy saving, and reduced noise.

[0045] The specific structure of the stove core is as follows: the stove core body 1 includes an inner layer 111 and an outer layer 112, with a hollow gap connecting the inner layer 111 and the outer layer 112. The tubular heater 2 is connected to the inner layer 111. The hollow layer facilitates the installation of the tubular heater. The outer layer is mainly a closed design, serving as a protective layer to prevent fuel leakage or external flame combustion. The inner layer is a combustion layer, primarily designed for heat transfer and high-temperature resistance, preventing the heating element from burning through.

[0046] In this design, the tubular heater 2 is coiled around the outer periphery of the stove core body 1 or the inner wall of the combustion chamber 101. This coiling arrangement ensures that the tubular heater 2 is in full contact with the inner or outer wall of the stove core body 1, allowing for rapid heating during the first combustion cycle, thus improving thermal efficiency and vaporization speed. Furthermore, it replaces electric heating, eliminating the need for an electric heating element. This results in a simpler structure, greater ease of use, energy savings, extended service life, and reduced manufacturing costs.

[0047] As described above, the tubular heater 2 in this application is implemented in two ways: either on the outer wall or inside the cavity. For embodiment one, as... Figures 5 to 7 As shown, the tubular heater 2 is located on the outer periphery of the stove core body 1. This structure is relatively simple and easy to manufacture and install.

[0048] Furthermore, for better fit, the outer peripheral wall of the cooktop body 1 is provided with a spiral-shaped embedding groove 21. This allows the tubular heater portion to be embedded into the embedding groove 21, facilitating positioning and installation, and increasing the contact area between the tubular heater and the outer wall of the cooktop, thereby improving thermal efficiency.

[0049] For the tubular heater embodiment two, as follows Figure 8 As shown, the tubular heater 2 is located on the inner wall of the combustion chamber 101. Compared with Embodiment 1, this method places the tubular heater inside the combustion chamber and sets a heat transfer ring around the tubular heater. During combustion, the heat transfer ring does not directly heat the tubular heater, preventing it from burning through. The heat transfer ring transfers heat quickly, resulting in the highest thermal efficiency. In addition, the stove core body 1 has a through hole 102 that penetrates its outer peripheral wall and connects to the combustion chamber 101. One end of the tubular heater 2 passes through this through hole and connects to the outer oil supply pipe.

[0050] Furthermore, in embodiment three of the tubular heater, the tubular heater 2 can be wound around the outer wall of the stove core body 1, with one end penetrating into the combustion cavity through the through hole, and the inner end still set on the inner wall of the combustion cavity in a spiral winding manner, that is, the tubular heater 2 is wound around the inner and outer walls of the stove core.

[0051] Furthermore, the combustion chamber 101 is also equipped with an ignition needle and a flame cap. Additionally, the tubular heater can use various pipe types, such as circular or square. In this design, one end of the tubular heater 2 is the mounting end connected to the injector, allowing connection to annular, direct-injection, or multi-hole atomizing injectors. This design includes an air-fuel mixing chamber, with annular, square, or other types of air-fuel mixing chambers 701 located at the connection point between the fuel supply pipe 91 and the injector 3. The direct-injection injector is mounted at the bottom of the stove core body 1, while the annular and multi-hole atomizing injectors are mounted on the inner walls around the stove core. The combustion chamber, located at the injector, is equipped with umbrella-shaped or conical flame caps.

[0052] In this design, the stove core body 1 has an outwardly turned edge 11 located above the combustion chamber 101, and the edge 11 has several ventilation holes 12. This satisfies the combustion requirements.

[0053] In this design, the stove body can be used for single or double burners. Its specific structure includes a combustion chamber 901, an oil supply chamber 902, and an electrical compartment 903, all isolated from each other. The stove core is located on the combustion chamber. The electrical wiring in the combustion chamber, oil supply chamber, and electrical compartment is sheathed with corrugated tubing or flame-retardant material. The oil supply chamber is equipped with a delivery pump 904, oil pipes, oil circuits, and an air-fuel mixing chamber. The electrical compartment is equipped with a pulse generator 905, a fan, relays, etc. A controller is also located in the electrical compartment, mounted flush against the lower part of the stove's panel, with the display screen facing upwards and flush against the transparent portion of the panel. The controller offers multiple opening methods: buttons, touch, and knobs. The controller primarily controls ignition, flow rate adjustment, fan start / stop, and airflow based on the stove's on / off status.

[0054] Furthermore, the pulse generator is fixedly installed inside the electrical box. In this design, two ignition needles are used: one placed next to the injector in the air-fuel mixing chamber, and the other at the bottom of the stove burner core. The burner core is circular and has temperature sensor mounting holes. A return flow hole is located at the bottom. A ring-shaped air vent is located around the injector in the air-fuel mixing chamber, and the vents are vertically fan-shaped. The bottom air-fuel mixing chamber is at a certain height from the fan-shaped vent, and a vertical injector mounting hole is located in the bottom air-fuel mixing chamber. The temperature sensor probe faces upwards, contacting the combustion flame. The temperature sensor is connected to the fan solenoid valve; in cold start mode, the fan solenoid valve opens, and the fan starts.

[0055] This solution also provides a fuel storage device, which is connected to the oil supply pipe 91 and the return pipe 92, and the oil supply pipe 91 is equipped with a return valve.

[0056] Specifically, the storage device 6 includes a bottle body 61 with a fuel storage compartment 601 inside, an output port 62 on the bottle body 61 that is connected to the oil supply pipe 91, and a return port 63 on the bottle body 61 that is connected to the return pipe 92. The return port 63 is also provided with a breather valve.

[0057] In addition, an explosion-proof material layer is provided between its fuel storage compartment 601 and the shell, which helps to prevent explosion during combustion, protect the storage compartment, and reduce the risk of disaster.

[0058] The specific structure is as follows: The output port has a connecting pipe that leads directly to the bottom of the fuel storage compartment 601, and the fuel is delivered to the stove through the oil supply pipe. The outermost part of the output port is equipped with a clamp and threaded connector for connecting the output pipeline. A check valve is installed at the supply port to prevent fuel from flowing back into the storage container and to prevent ignition difficulties. The storage container is designed to be round or square and is filled with explosion-proof material to prevent explosions. The upper part of the storage container has an oil supply pipe port, an explosion-proof material filling port, and a valve plug. The valve plug is equipped with a return port and a breather valve hole. The return port is connected to the return pipe. The return port and the breather valve are equipped with self-closing valves. The valves are directly closed when the storage container is tilted to 45 degrees or is accidentally tipped over. The valve plug can be unscrewed and fuel can be added by connecting a funnel. After adding fuel, the valve can be tightened again.

[0059] In addition, a delivery pipe is usually installed between the storage device and the oil inlet pipe of the stove to extend the oil supply. The delivery pipe is connected to the oil supply port of the storage container. A filter is installed between the delivery pipe and the storage container. The inner tube of the delivery pipe is a corrosion-resistant and high-temperature resistant flexible hose, and the hose is covered with a stainless steel sleeve to prevent fire.

[0060] This application also provides a control method for a vaporizer with an air-fuel mixing chamber and a heating tube, comprising the following steps:

[0061] a. Turn on the memory 6 switch, turn on the power switch, start the fan, and introduce air into the air-fuel mixing chamber 701 in the combustion chamber; liquid fuel enters the mixing chamber 701 from the memory 6 through the delivery pump 904, the oil supply pipe 91, and the tubular heater 2, and is then input into the combustion chamber 101 from the bottom injector 31 and the circumferential injector 32.

[0062] b. The upper ignition needle 82 and the lower ignition needle 81 initiate ignition, igniting the mixture of liquid fuel flowing out of the injector and air output from the blower;

[0063] c. If the temperature sensor 7 detects an increase in the combustion chamber temperature, ignition is successful. Excess liquid fuel at the bottom flows back to the storage tank 6 through the return pipe 92 for recycling.

[0064] d. The tubular heater 2 located on the combustion chamber is heated by combustion, so that the liquid fuel inside and the fuel-air mixture in the mixing chamber 701 are vaporized into fuel gas, and together with the air from the air duct, it is continuously sprayed into the combustion chamber from the bottom injector 31 and the circumferential injector 32 to maintain combustion.

[0065] If the temperature sensor 7 detects that the combustion chamber temperature has not increased in step c above, the first ignition fails. The upper ignition needle 82 and the lower ignition needle 81 are restarted to start the second ignition or multiple ignitions. At this time, the return valve is closed to prevent the fuel inside the fuel pipe from flowing back into the storage.

[0066] The process is as follows: Open the storage container delivery pipe switch, and air enters the storage container 6 through the breather valve to prevent negative pressure from affecting the delivery pump's oil suction. Press the controller button or touch switch on the stove, and the fan 72 starts, the delivery pump starts, and the pulse begins its first ignition. An air-fuel mixture is injected from the permeation hole and atomized by the circumferential injector in the air-fuel mixing chamber 701. The bottom and top ignition needles simultaneously ignite the fuel. The temperature sensor probe detects the temperature, and the ignition needle stops igniting. Excess fuel is returned to the storage container through the return hole. If the stove has not been used for a long time, the pulse will initiate secondary or multiple ignitions based on the temperature data sensed by the temperature sensor until the fuel is burned. The fuel combustion temperature heats the surrounding heating channel pipes. When the temperature reaches approximately 70 degrees Celsius, the liquid fuel and air mixture begins to vaporize. The fuel is injected in vaporized form by the upward or downward injectors, the fan stops rotating, and the delivery pump's flow rate can be adjusted according to the button or touch switch. The firepower increases with increasing airflow and decreases with decreasing airflow. Pressing the button or touch switch again turns off the power, and the fan and delivery pump stop working.

[0067] This invention provides a stove with an air-fuel mixing chamber and a heating tube vaporization core. It mixes air and fuel in the mixing chamber, forming an air-fuel mixture from liquid fuel. This mixture is pre-combusted in the combustion chamber, resulting in a high combustion rate. The heat generated during combustion heats the tube heater, vaporizing the air and liquid fuel within it. This replaces the existing method of using electric heating to vaporize liquid fuel, solving the problems of single-purpose fans, excessive fuel consumption, and reliance on electricity. Furthermore, the mixed air and fuel burn completely, resulting in high heating efficiency. This makes the structure simpler, more convenient to use, energy-saving, and improves service life while reducing manufacturing costs.

[0068] This application also features excess liquid fuel recovery, with excess fuel flowing back to the storage container, saving fuel and preventing excessive fuel leakage that could cause safety hazards. Furthermore, the fuel sprayed from the injector mixes with the air from the fan and is then atomized and sprayed downwards. The fan's airflow rate controls the fuel flow rate, and the system can be turned on and off based on temperature and fuel flow, or even forced off. This results in more complete fuel combustion, is environmentally friendly, saves electricity, and reduces noise.

[0069] The above description provides one or more embodiments in conjunction with specific content, and does not imply that the specific implementation of the present invention is limited to these descriptions. Any methods or structures that are similar to or identical to those of the present invention, or any technical deductions or substitutions made based on the concept of the present invention, should be considered within the scope of protection of the present invention.

Claims

1. A stove with an air-fuel mixing chamber and a tubular vaporization core, characterized in that, The appliance includes a cooker body, a cooker core with a combustion chamber located within the cooker body, a tubular heater located on the cooker core, and an injector located within the combustion chamber. The combustion chamber also includes an air-fuel mixing chamber. The cooker body is also equipped with an oil supply pipe for supplying liquid fuel. One end of the tubular heater is connected to the oil supply pipe, and the other end is connected to the injector within the combustion chamber. The tubular heater is located on the outer periphery of the cooker core or on the inner wall of the combustion chamber so that the cooker core can heat the tubular heater when it is burning. The fuel supplied by the tubular heater is directly sprayed out from the injector and / or exported into the mixing chamber to mix with air before being sprayed into the combustion chamber. The injector includes at least a bottom injector that is erected at the bottom of the combustion chamber and a circumferential injector that is disposed on the inner peripheral wall of the combustion chamber with the nozzle facing obliquely downward. The bottom injector and the circumferential injector are connected inside the stove core through a mixing chamber. The tubular heater is connected to the mixing chamber through a connecting pipe. The stove body is also provided with an air inlet pipe that runs through the mixing chamber and a fan connected to the air inlet pipe on the stove body. The inlet end of the air-fuel mixing chamber is connected to a connecting pipe and an air inlet pipe, and the outlet is connected to an injector. The stove body is also provided with a return pipe that communicates with the bottom of the combustion chamber, and the return pipe is also provided with a return interface; It also includes a storage device connected to the oil pipeline and return pipeline.

2. The stove with an air-fuel mixing chamber and a tubular vaporization core according to claim 1, characterized in that, The combustion chamber is also provided with an ignition needle, which includes a lower ignition needle facing and close to the bottom of the combustion chamber and an upper ignition needle facing and close to the bottom injector.

3. The stove with an air-fuel mixing chamber and a tubular vaporization core according to claim 2, characterized in that, It also includes a temperature sensor located above the combustion chamber.

4. The stove with an air-fuel mixing chamber and a tubular vaporization core according to claim 1, characterized in that, The cooktop core includes an inner layer and an outer layer, which are connected by a gap. The tubular heater is connected to the inner layer of the cooktop core.

5. The stove with an air-fuel mixing chamber and a tubular vaporization core according to claim 1, characterized in that, The storage device includes a bottle body with an internal fuel storage compartment, an output port on the bottle body that connects to the oil delivery pipe, and a return port on the bottle body that connects to the return pipe. The return port is also equipped with a breather valve.

6. A control method for an air-fuel mixing chamber and a heating tube type vaporization stove, characterized in that, Includes the following steps: a. Turn on the memory switch and the power switch. The fan will start and introduce air into the air-fuel mixing chamber inside the combustion chamber. Liquid fuel is fed from the storage tank into the mixing chamber via a delivery pump, a fuel line, and a tubular heater, and then fed into the combustion chamber through the bottom injector and the circumferential injector. b. The upper and lower ignition needles initiate ignition, igniting the mixture of liquid fuel flowing out of the injector and air output from the blower; c. If the thermometer detects an increase in the temperature inside the combustion chamber, ignition is successful, and excess liquid fuel at the bottom flows back to the storage tank through the return pipe for recycling. d. The tubular heater installed on the combustion chamber is heated by combustion, which vaporizes the liquid fuel inside and the fuel-air mixture in the mixing chamber into fuel gas, and continuously sprays it into the combustion chamber from the bottom injector and the circumferential injector along with the air from the air duct to maintain combustion. If the thermometer detects that the temperature inside the combustion chamber has not increased in step c above, the first ignition fails. The upper and lower ignition needles are restarted to start the second or multiple ignitions. At this time, the return valve is closed to prevent the fuel inside the fuel line from flowing back into the storage tank.

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