Liquid fuel vaporization mixing device and combustion device formed by same

Abstract

The utility model discloses a liquid fuel vaporizing and mixing device and a combustion device formed thereof.The liquid fuel vaporizing and mixing device comprises a lining cylinder and an air combing guide cylinder, a conical guide seat is arranged at the bottom of the air combing guide cylinder, the bottom end of the conical guide seat is connected with the bottom end of the lining cylinder in a sealed mode, and a vaporizing and mixing cavity is formed between the air combing guide cylinder and the lining cylinder; an annular cavity is defined by the conical flow guide seat at the bottom of the vaporization mixing chamber; a plurality of air grooves communicated with the vaporization mixing chamber are circumferentially distributed in the cylinder wall of the air combing guide cylinder, and a plurality of air guide grooves communicated with the annular cavity are formed in the conical guide seat. According to the liquid fuel vaporization mixing device, the liquid fuel can be fully mixed with air, the liquid fuel attached to the cambered surface cylinder can be fully vaporized, finally, the vaporized liquid fuel can be fully mixed with the air, and the fuel utilization rate is improved.

Description

Technical Field

[0001] This utility model relates to the field of combustion heating devices, and in particular to a liquid fuel vaporization mixing device and a combustion device composed thereof. Background Technology

[0002] In the vast commercial stove market, liquefied petroleum gas (LPG) fuel, such as gas cylinders, is widely used in schools, military units, restaurants, hotels, and other multi-person stove applications. This traditional LPG has problems such as low calorific value, high cost, low flash point, flammability, explosiveness, and significant safety hazards. Due to the significant safety risks of LPG fuel, national monitoring has become increasingly strict, prohibiting non-residential users from using LPG. This has led to a shift in commercial stove fuels towards safer fuels with higher flash points—liquid fuels (coal-based liquid fuels). Coal-based liquid fuel for kitchen stoves is a non-toxic, harmless, high-flash-point liquid kitchen stove fuel mainly composed of alkanes, made from Fischer-Tropsch synthetic hydrocarbons, industrial white oil, high-flash-point hydrocarbon compounds, and other raw materials, compounded with high-molecular-weight oxygen-containing compounds and additives. The main advantages of this fuel oil (called liquid fuel) are its wide application, low price, high calorific value, good safety, and clean and environmentally friendly nature; it is also very safe as it does not burn at room temperature.

[0003] Combustion devices convert chemical energy into thermal energy through fuel combustion. The thermal energy is used to heat water for cooking or to turn water into high-temperature steam for steaming or as a power source for mechanical transmission. Existing combustion devices primarily use gaseous fuels (unsuitable for liquid fuel combustion and effective fuel-air mixing). They rely on fans to mix air and gaseous fuels, lacking a dedicated mixing device, resulting in incomplete mixing and unsuitability for liquid fuels. Therefore, there is an urgent need to research a device that can mix liquid fuels with air and achieve effective vaporization of the liquid fuel, enabling better application of liquid fuels in combustion devices. Utility Model Content

[0004] The purpose of this invention is to solve the technical problems pointed out in the background art and to provide a liquid fuel vaporization mixing device that can fully mix liquid fuel with air and fully vaporize the liquid fuel attached to the arc-shaped cylinder, thereby achieving full mixing of vaporized liquid fuel with air and improving fuel utilization.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A liquid fuel vaporization and mixing device includes an inner liner and a combing air guide tube. The bottom of the combing air guide tube has a conical guide seat, the bottom end of which is sealed to the bottom end of the inner liner. A vaporization and mixing chamber is formed between the combing air guide tube and the inner liner. The conical guide seat forms an annular cavity at the bottom of the vaporization and mixing chamber. The wall of the combing air guide tube has several air slots distributed circumferentially, which communicate with the vaporization and mixing chamber. The conical guide seat has several air guide slots that communicate with the annular cavity.

[0007] To better realize this utility model, an arc-shaped cylinder located inside the vaporization mixing chamber is attached to the inner wall of the inner liner cylinder. The cylinder wall surface of the arc-shaped cylinder is generally in the shape of a wavy arc or a continuous triangular bend.

[0008] Preferably, all the air slots in the air combing guide tube are either windward slots, or all the air slots are counter-wind slots, or some of the air slots are windward slots and the remaining air slots are counter-wind slots; the windward slots are arranged to discharge air at a clockwise angle from the inner wall to the outer wall of the air combing guide tube, and the counter-wind slots are arranged to discharge air at a counter-clockwise angle from the inner wall to the outer wall of the air combing guide tube.

[0009] Preferably, the conical guide seat is composed of an annular inclined plate and a transverse base plate at an angle. The top of the annular inclined plate is connected to the bottom of the combing guide cylinder, and the transverse base plate is connected to the bottom of the inner liner cylinder. The annular cavity has a triangular cross-section, and all the air guide slots are opened on the annular inclined plate.

[0010] Preferably, in all the air guide slots on the air guide annular inclined plate, all the air guide slots are clockwise air guide slots, or all the air guide slots are counterclockwise air guide slots, or part of all the air guide slots are clockwise air guide slots and the remaining part is counterclockwise air guide slots; the clockwise air guide slots are inclined to discharge air in a clockwise direction, and the counterclockwise air guide slots are inclined to discharge air in a counterclockwise direction.

[0011] Preferably, the present invention further includes an air collecting box, which has a box shell and an air collecting chamber inside. The inner liner is part of the air collecting box and is connected to the box shell. The conical guide seat has an air inlet that communicates with the inner cavity of the combing guide tube. The air inlet of the conical guide seat communicates with the air collecting chamber of the air collecting box. The air collecting chamber of the air collecting box is provided with an air guiding arc plate corresponding to the air inlet of the conical guide seat.

[0012] Preferably, the inner liner has a fuel inlet, the fuel inlet is equipped with a fuel delivery pipe, and the oil outlet end of the fuel delivery pipe is placed in the vaporization mixing chamber.

[0013] A combustion device comprising a liquid fuel vaporization mixing apparatus, wherein an igniter corresponding to the oil outlet end of a fuel delivery pipe is installed on the inner liner; an air inlet communicating with an air collection chamber is opened at the bottom of the air collection box, and an air intake fan corresponding to the air inlet is installed at the bottom of the air collection box; a combustion cylinder is sealed and connected to the top of the inner liner, the inner cavity of the combustion cylinder is connected to the vaporization mixing chamber, and a plurality of flame heat outlets are opened on the combustion cylinder.

[0014] Preferably, a flameout protection detection needle is installed in the inner cavity of the air combing guide tube. The air combing guide tube has a top plate, and a needle through hole is opened in the center of the top plate. The detection needle end of the flameout protection detection needle passes through the needle through hole of the top plate.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0016] (1) The combing air guide tube of this utility model has the function of combing airflow. After the combing air enters the mixing chamber through the combing air guide tube, it forms a regular airflow that is clockwise or counterclockwise or half clockwise and half counterclockwise. The regular airflow promotes the full mixing of water mist liquid fuel and air. It is ignited for the first time in the vaporization mixing chamber to form pre-combustion or first-stage combustion. The combustion in the vaporization mixing chamber not only realizes the transmission of the combustion flame towards the flame spreader, but also realizes the vaporization of liquid fuel, which will be more conducive to the effective mixing with the combustion air and also help to complete combustion.

[0017] (2) The conical guide seat of this utility model is composed of an air guide annular inclined plate and a transverse bottom plate forming a triangular annular cavity at the bottom of the mixing chamber. The annular cavity is a part of the cavity at the bottom of the vaporization mixing chamber. The air guide annular inclined plate is provided with air guide grooves. After passing through all the air guide grooves, the air at the bottom of the inner cavity of the guide combination cylinder forms a regular airflow in the triangular annular cavity at the bottom of the mixing chamber, either clockwise or counterclockwise or half clockwise and half counterclockwise. The regular airflow carries away the mist-like liquid fuel or fuel-air mixture at the bottom of the annular cavity and the arc-shaped cylinder, allowing the fuel to flow and burn fully, and not easily adhering to the bottom of the annular cavity. At the same time, the clockwise airflow at the bottom of the annular cavity also plays a role in guiding the combustion fire, allowing part of the fire to fully vaporize the liquid fuel at the bottom of the annular cavity.

[0018] (3) The wall surface of the arc-shaped cylinder of this utility model is in the shape of a wave arc. The arc-shaped cylinder can fully adhere to the mist-like liquid fuel. During continuous combustion, the arc-shaped cylinder effectively increases the area of ​​the liquid fuel adhering to it, allowing the mist-like liquid fuel to be fully vaporized. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of the liquid fuel vaporization and mixing device of this utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure after partial cross-section;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure after cross-section at the middle and installation of the fuel delivery pipe;

[0022] Figure 4 This is a schematic diagram of the arc-shaped cylinder in the embodiment;

[0023] Figure 5 This is a schematic diagram of a combing guide tube with symmetrically arranged counter-wind troughs and follow-wind troughs, as exemplified in the embodiment.

[0024] Figure 6 This is a schematic diagram of the layout structure of the comb-type air guide tube with only the counter-wind trough in the embodiment;

[0025] Figure 7 This is a schematic diagram of the combing guide tube in the embodiment, in which the counter-wind trough and the co-wind trough are symmetrically arranged in the direction of fuel entry;

[0026] Figure 8 This is a schematic diagram of the air guide grooves arranged on the annular inclined plate in the embodiment;

[0027] Figure 9 This is a schematic diagram of the external structure of the combustion device in the embodiment;

[0028] Figure 10 for Figure 9 A schematic diagram of the structure after cross-section in the middle.

[0029] The names corresponding to the reference numerals in the attached figures are as follows:

[0030] 1 - Air collecting box, 11 - Inner liner, 12 - Box shell, 13 - Air guide arc plate, 2 - Air combing guide tube, 21 - Backflow groove, 22 - Downflow groove, 3 - Conical guide seat, 30 - Annular cavity, 31 - Air guide annular inclined plate, 311 - Air guide groove, 32 - Horizontal bottom plate, 4 - Fuel inlet, 41 - Fuel entry direction, 5 - Arc-shaped cylinder, 6 - Combustion cylinder, 61 - Flame heat outlet, 7 - Fuel delivery pipe. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the embodiments:

[0032] Example

[0033] like Figures 1 to 8 As shown, a liquid fuel vaporization mixing device includes an inner liner 11 and a comb-type air guide cylinder 2. The bottom of the comb-type air guide cylinder 2 has a conical guide seat 3, as shown. Figure 3As shown, the comb-type air guide cylinder 2 and the conical air guide seat 3 of this utility model can be integrally molded. The overall height of the inner liner cylinder 11 is higher than the overall height of the comb-type air guide cylinder 2, and a height difference space is formed between the top opening of the inner liner cylinder 11 and the top plate of the comb-type air guide cylinder 2, which facilitates the flow of the fuel-air mixture (the mixture of fuel and air after vaporization) toward the inner cavity of the comb-type air guide cylinder 4. The bottom end of the conical air guide seat 3 is sealed to the bottom end of the inner liner cylinder 11 (the transverse bottom plate 32 of the conical air guide seat 3 plays a connecting role), and a vaporization mixing chamber is formed between the comb-type air guide cylinder 2 and the inner liner cylinder 11. The conical air guide seat 3 forms an annular cavity 30 at the bottom of the vaporization mixing chamber.

[0034] The comb-type air guide tube 2 has several air slots distributed circumferentially on its cylinder wall, which are connected to the vaporization mixing chamber.

[0035] This utility model can be configured in the following three ways:

[0036] The first scheme: In all the air slots of the air comber 2, all the air slots are in the direction of airflow. Since all the air slots of the air comber 2 are in the direction of airflow 22, when air enters the inner cavity of the air comber 2, after passing through all the air slots (the air slots play a role in combing and guiding the airflow, and the airflow after combing and guiding enters the vaporization mixing chamber), a clockwise airflow is formed. In the vaporization mixing chamber, the clockwise airflow is fully mixed with the liquid fuel that enters successively through the fuel inlet 4 (or fuel delivery pipe 7), and then evenly distributed throughout the mixing chamber. During the combustion process, the air comber 2 and the inner liner 11 are both at high temperatures, and the vaporization mixing chamber is also a high-temperature environment. After the liquid fuel is sprayed into the mixing chamber by the pulse oil pump (the spray can be in the form of water mist), the liquid fuel vaporizes into gas in the high-temperature vaporization mixing chamber.

[0037] The second option is to make all the air ducts in the air comb duct 2 be counter-wind ducts. Figure 6 All the air slots in the air combing guide tube 2 are shown as counter-current air slots 21. Since all the air slots in the air combing guide tube 2 are counter-current air slots 21, the fan blows air into the inner cavity of the air combing guide tube 2. After passing through all the air slots (the air slots serve to comb and guide the airflow, and the airflow after combing and guiding then enters the vaporization mixing chamber), a counter-clockwise airflow is formed. The counter-clockwise airflow in the vaporization mixing chamber is fully mixed with the fuel that enters successively from the fuel inlet 4 (or fuel delivery pipe 7), and then evenly distributed throughout the vaporization mixing chamber.

[0038] The third option is to designate some of the wind ducts as downwind ducts 22 and the remaining wind ducts as upwind ducts 21.

[0039] In the above three schemes, the airflow channel is set to be inclined clockwise from the inner wall to the outer wall of the air distribution tube 2. In this way, the air discharged from the airflow channel 22 of the air distribution tube 2 will form a clockwise wind, and then enter the vaporization mixing chamber to form a clockwise airflow. The airflow channel is set to be inclined counterclockwise from the inner wall to the outer wall of the air distribution tube 2. In this way, the air discharged from the airflow channel 21 of the air distribution tube 2 will form a counterclockwise wind, and then enter the vaporization mixing chamber to form a counterclockwise airflow.

[0040] The further preferred technical solution of the third scheme in this embodiment is as follows: See Figure 7 Of all the air ducts, half are downwind ducts 22, and the other half are upwind ducts 21. Upwind ducts 41 are evenly distributed on one half of the combing guide tube 2 (i.e., all upwind ducts 41 constitute downwind duct units and are distributed on one half of the combing guide tube 2), and downwind ducts 22 are evenly distributed on the other half of the combing guide tube 2 (i.e., all downwind ducts 22 constitute downwind duct units and are distributed on one half of the combing guide tube 2). In this embodiment, the fuel inlet 4 enters fuel in the direction of fuel inlet 41 (…). Figure 7 As indicated by the arrow, the fuel entering in the fuel inlet direction 41 vaporizes into gas in a high-temperature environment. The fuel inlet 4 is located at the junction of the downwind trough unit and the upwind trough unit. Part of the fuel entering in the fuel inlet direction 41 moves clockwise under the guidance of the downwind flow of the downwind trough unit and is fully mixed at the same time. The other part moves counterclockwise under the guidance of the upwind flow of the upwind trough unit and is fully mixed at the same time.

[0041] The conical guide seat 3 has several air guide slots 311 communicating with the annular cavity 30. The conical guide seat 3 is composed of an annular inclined air guide plate 31 and a transverse base plate 32 forming an angle. The top of the annular inclined air guide plate 31 is connected to the bottom of the combing air guide cylinder 2, and the transverse base plate 32 is connected to the bottom of the inner liner cylinder 11. The transverse base plate 32 is arranged horizontally, while the annular inclined air guide plate 31 is arranged obliquely. Figure 3 As shown, the conical guide seat 3 has a triangular cross-section (the horizontal base plate 32 serves as the horizontal base, and the air guide annular inclined plate 31 serves as the inclined surface). The annular cavity 30 has a triangular cross-section (the horizontal base plate 32 and the air guide annular inclined plate 31 together form an annular cavity with a triangular cross-section), and all air guide slots 311 are formed on the air guide annular inclined plate 31. Among all the air guide slots 311 on the air guide annular inclined plate 31, the present invention can select the following three layout schemes (the same as the air slot layout method of the comb air guide tube 2):

[0042] The first scheme: All the air guide grooves 311 on the annular inclined plate 31 are clockwise air guide grooves. The air flow enters the conical guide seat 3 (i.e. the bottom of the inner cavity of the combing guide tube 2) and the air flow enters the annular cavity from all the clockwise air guide grooves to form a clockwise air flow. The clockwise air flow carries away the atomized liquid fuel or fuel-air mixture at the bottom of the annular cavity and the arc-shaped tube 5, allowing the fuel to flow and burn completely, and not easily adhere to the bottom of the annular cavity. At the same time, the clockwise air flow at the bottom of the annular cavity also plays a role in guiding the combustion fire, allowing some of the fire to fully vaporize the liquid fuel at the bottom of the annular cavity.

[0043] The second option is that all the air guide slots 311 on the annular inclined plate 31 are counterclockwise air guide slots. The air flow enters the air inlet of the shaped guide seat 3 (i.e., the bottom of the inner cavity of the combing guide tube 2). The air flow enters the annular cavity from all the counterclockwise air guide slots to form a counterclockwise air flow. The counterclockwise air flow carries away the atomized liquid fuel or fuel-air mixture at the bottom of the annular cavity and the arc-shaped tube 5, allowing the fuel to flow and burn completely, and preventing it from easily adhering to the bottom of the annular cavity. At the same time, the counterclockwise air flow at the bottom of the annular cavity also plays a role in guiding the combustion fire, allowing some of the fire to fully vaporize the liquid fuel at the bottom of the annular cavity.

[0044] The third option: Part of all the air guide slots 311 on the annular inclined plate 31 are clockwise air guide slots, and the remaining part is counterclockwise air guide slots. In this embodiment, the arrangement of air guide slots 311 on the annular inclined plate 31 is the same as the third option of the combing guide tube 4, in which half of the air guide slots 311 are clockwise air guide slots and the other half of the air guide slots 311 are counterclockwise air guide slots, so that one half of the annular cavity forms a clockwise airflow and the other half of the annular cavity forms a counterclockwise airflow. After meeting, they swirl and rise, realizing fuel flow and complete combustion.

[0045] In the above three schemes, the clockwise air guide duct is set to tilt clockwise for air outlet, and the counter-wind duct is set to tilt counter-clockwise for air outlet.

[0046] In some embodiments, an arc-shaped cylinder 5 located inside the vaporization mixing chamber is attached to the inner wall of the inner liner 11. The cylinder wall of the arc-shaped cylinder 5 is generally in the shape of a wavy arc or a continuous triangular bend. The arc-shaped cylinder 5 is made of iron-chromium-aluminum material. The arc-shaped cylinder 5 can fully adhere to the atomized liquid fuel, allowing the atomized liquid fuel to be fully vaporized during continuous combustion (the arc-shaped cylinder 5 effectively increases the area of ​​the liquid fuel adhering).

[0047] This utility model also includes an air collecting box 1, which has a box shell 12 and an air collecting chamber inside. The inner liner 11 is part of the air collecting box 1 and is connected to the box shell 12. The conical guide seat 3 has an air inlet that communicates with the inner cavity of the combing guide tube 2. The air inlet of the conical guide seat 3 communicates with the air collecting chamber of the air collecting box 1. The air collecting chamber of the air collecting box 1 is provided with an air guiding arc plate 13 corresponding to the air inlet of the conical guide seat 3 (the air in the air collecting chamber is blown into the air inlet of the conical guide seat 3 through each air guiding arc plate 13, and then enters the inner cavity of the combing guide tube 2).

[0048] In some embodiments, the inner liner 11 has a fuel inlet 4, and a fuel delivery pipe 7 is installed on the fuel inlet 4. The oil outlet end of the fuel delivery pipe 7 is placed in the vaporization mixing chamber.

[0049] A combustion device comprising a liquid fuel vaporization mixing apparatus includes an igniter mounted on an inner liner 11, corresponding to the oil outlet of a fuel delivery pipe 7. A pulse oil pump (connected to a fuel tank) is installed on the fuel delivery pipe 7. Fuel is output through the outlet of the fuel delivery pipe 7, and the igniter performs ignition accordingly. An air inlet communicating with an air collection chamber is located at the bottom of the air collection box 1, and an air intake fan corresponding to the air inlet is installed at the bottom of the air collection box 1. A combustion cylinder 6 is sealed to the top of the inner liner 11. The inner cavity of the combustion cylinder 6 communicates with the vaporization mixing chamber, and the combustion cylinder 6 has several flame heat outlets 61.

[0050] A flameout protection detection needle is installed inside the air distribution tube 2. The air distribution tube 2 has a top plate with a needle through hole in the center. The probe tip of the flameout protection detection needle passes through the needle through hole in the top plate. The probe tip of the flameout protection detection needle is placed in the space between the top of the air distribution tube 2 and the combustion tube 6 to detect the flameout temperature and provide emergency flameout protection. When the flameout protection detection needle detects flameout, it immediately shuts down the pulse oil pump and the air intake fan, or restarts the ignition process via the igniter.

[0051] In use, this utility model is mainly used for liquid fuel (of course, it can also be used for gaseous fuel). Liquid fuel is stored in the fuel tank, and the fuel delivery pipe 7 (under the power output of the pulse oil pump) sprays the liquid fuel in the fuel tank into a water mist and enters the vaporization mixing chamber from the fuel inlet 4. The igniter is used to ignite the water mist liquid fuel. The blower blows air into the air collecting chamber of the air collecting box 1 through the air inlet. The air gathers in the inner cavity of the comb guide tube 2 and the conical guide seat 3 assembly. The bottom of the comb guide tube 2 is the conical guide seat 3, and the inner cavity of the comb guide tube 2 is filled with air at a certain pressure. The air at the bottom of the inner cavity of the comb guide tube 2 enters the annular cavity at the bottom of the mixing chamber through the various guide grooves 311 of the conical guide seat 3 and forms a certain regular airflow (any of the three types of airflow, in this embodiment, the third type of airflow with guide grooves 311 is preferred). The airflow carries away the atomized liquid fuel or fuel-air mixture at the bottom of the annular cavity and the arc-shaped cylinder 5, allowing the fuel to flow and burn completely, and not easily adhering to the bottom of the annular cavity. At the same time, the airflow at the bottom of the annular cavity also plays a role in guiding the combustion, allowing some of the fire to fully vaporize the liquid fuel at the bottom of the annular cavity. The air inside the comb-flow guide tube 2 is guided and combed by the various air slots in the comb-flow guide tube 2 to form the required airflow. The air slots act as combing channels, and the airflow enters the vaporization mixing chamber after being combed by the air slots. The airflow follows a certain pattern (any of the three methods of airflow, but in this embodiment, the third method of air slot design is preferred), which enhances the mixing efficiency of fuel and air and achieves more thorough mixing. The air that enters the vaporization mixing chamber after being combed by the comb-flow guide tube 2 promotes the mixing of fuel and air. The mixture of fuel and air is called an air-fuel mixture (containing vapor). The fuel (including chemical fuel, water mist liquid fuel, air, etc.) is first ignited in the vaporization mixing chamber (this initial ignition can be called pre-combustion or primary combustion; the initial combustion in the vaporization mixing chamber can be called combustion chamber A). During continuous combustion, the air guide tube 2, the inner liner 11, and the vaporization mixing chamber are all high-temperature environments. The fuel entering the vaporization mixing chamber is liquid fuel oil, which immediately vaporizes upon entry and is transported towards the combustion cylinder 6). The air-fuel mixture enters the inner cavity of the combustion cylinder 6 and burns inside and outside the inner cavity (this can be called secondary combustion). Figure 9 , Figure 10 As shown, the combustion chamber 6 is cylindrical in shape, but it can also be a traditional burner head structure.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A liquid fuel vaporization and mixing device, characterized in that: The device includes an inner liner and a combing air guide tube. The bottom of the combing air guide tube has a conical guide seat, and the bottom end of the conical guide seat is sealed to the bottom end of the inner liner. A vaporization mixing chamber is formed between the combing air guide tube and the inner liner. The conical guide seat forms an annular cavity at the bottom of the vaporization mixing chamber. The wall of the combing air guide tube has several air slots that communicate with the vaporization mixing chamber in a circular pattern. The conical guide seat has several air guide slots that communicate with the annular cavity.

2. The liquid fuel vaporization and mixing device according to claim 1, characterized in that: The inner wall of the liner is attached to an arc-shaped cylinder located inside the vaporization mixing chamber. The cylinder wall is generally wavy or continuously triangularly bent.

3. A liquid fuel vaporization mixing device according to claim 1 or 2, characterized in that: All the air ducts in the air combing guide tube are either all wind-following ducts, or all the air ducts are all wind-reverse ducts, or some of the air ducts are wind-following ducts and the remaining air ducts are wind-reverse ducts; the wind-following ducts are arranged to discharge air at a clockwise angle from the inner wall to the outer wall of the air combing guide tube, and the wind-reverse ducts are arranged to discharge air at a counterclockwise angle from the inner wall to the outer wall of the air combing guide tube.

4. The liquid fuel vaporization and mixing device according to claim 3, characterized in that: The conical guide seat is composed of an air-guiding annular inclined plate and a transverse base plate at an angle. The top of the air-guiding annular inclined plate is connected to the bottom of the air-combing guide cylinder, and the transverse base plate is connected to the bottom of the inner liner cylinder. The annular cavity has a triangular cross-section, and all air-guiding grooves are opened on the air-guiding annular inclined plate.

5. A liquid fuel vaporization mixing device according to claim 4, characterized in that: In all the air guide slots on the air guide annular inclined plate, all air guide slots are clockwise air guide slots, or all air guide slots are counterclockwise air guide slots, or part of all air guide slots are clockwise air guide slots and the remaining part is counterclockwise air guide slots; the clockwise air guide slots are set to discharge air at a clockwise angle, and the counterclockwise air guide slots are set to discharge air at a counterclockwise angle.

6. The liquid fuel vaporization mixing device according to claim 1, characterized in that: It also includes an air collecting box, which has a box shell and an air collecting chamber inside. The inner liner is part of the air collecting box and is connected to the box shell. The conical guide seat has an air inlet that communicates with the inner cavity of the combing guide tube. The air inlet of the conical guide seat communicates with the air collecting chamber of the air collecting box. The air collecting chamber of the air collecting box is provided with an air guide arc plate corresponding to the air inlet of the conical guide seat.

7. A liquid fuel vaporization mixing device according to claim 6, characterized in that: The inner liner has a fuel inlet, and a fuel delivery pipe is installed on the fuel inlet. The oil outlet end of the fuel delivery pipe is placed in the vaporization mixing chamber.

8. A combustion device comprising the liquid fuel vaporization mixing apparatus of claim 7, characterized in that: An igniter corresponding to the oil outlet end of the fuel delivery pipe is installed on the inner liner; an air inlet communicating with the air collection chamber is opened at the bottom of the air collection box, and an air intake fan corresponding to the air inlet is installed at the bottom of the air collection box; a combustion cylinder is sealed and connected to the top of the inner liner, the inner cavity of the combustion cylinder is connected to the vaporization mixing chamber, and several flame heat outlets are opened on the combustion cylinder.

9. A combustion device according to claim 8, characterized in that: The comb-type air guide tube has a flameout protection detection needle installed in its inner cavity. The comb-type air guide tube has a top plate with a needle through hole in the center of the top plate. The probe end of the flameout protection detection needle passes through the needle through hole in the top plate.

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