Vaporizing combustion head

Abstract

The vaporizing combustion head belongs to the components of liquid fuel combustion equipment. It includes a combustion cylinder, and a sleeve is sleeved outside the combustion cylinder. Both ends of the sleeve are hermetically and fixedly connected to the opposite ends on the combustion cylinder. An annular gas-liquid chamber is provided between the combustion cylinder and the sleeve. A liquid injection pipe is connected to the lower part at the rear end of the gas-liquid chamber, and a gas-liquid outlet pipe is connected to the upper part at the front end of the gas-liquid chamber. A jet pipe is provided at the central part inside the combustion cylinder. The front end of the jet pipe is connected to the gas-liquid outlet pipe, and a nozzle is installed at the rear end. A plurality of spray holes are evenly distributed along the circumference of the nozzle. A plurality of heat absorption plates are evenly distributed along the circumference of the jet pipe. One end of each heat absorption plate faces the jet pipe and there is a gap between it and the jet pipe, and the other end is fixedly connected to the inner wall of the combustion cylinder. This vaporizing combustion head can increase the combustion temperature of clean fuel, improve the utilization rate of clean fuel, reduce the heat dissipation of clean fuel, and has remarkable energy-saving and environmental protection effects.

Description

Technical Field

[0001] The present invention relates to the field of liquid fuel combustion equipment, and particularly to a gasification type combustion head. Background Art

[0002] In recent years, environmentally friendly hot water boilers that are designed with clean fuels and other fuels have achieved good results. Their main features are small floor area, simple structure, convenient manufacturing, construction and installation. More importantly, they have high thermal efficiency. In particular, superconducting hot water boilers have greater potential. Since most of the combustion of clean fuel boilers is for atomized flame spraying combustion, similar to light oil burners, after several years of development, practical application and continuous improvement, especially the automatic control and application technology of burners has been perfected, and the combustion emission products can meet environmental protection requirements. However, the disadvantage is that the calorific value of clean fuel is not high, which is not conducive to burners with large heat loads, and the heating temperature cannot meet the demand in colder weather. The main reasons are that the combustion temperature is not high and the consumption is also large. The main problem is due to the low calorific value of clean fuel itself. The described clean fuels include liquid fuels such as gasoline and diesel. Summary of the Invention

[0003] The purpose of the present invention is to provide a gasification type combustion head, which can increase the combustion temperature of clean fuel, improve the utilization rate of clean fuel, reduce the heat loss of clean fuel, and have remarkable energy conservation and environmental protection effects.

[0004] The technical solution of the present invention is: a gasification type combustion head, characterized in that it includes a combustion cylinder, a sleeve is sleeved outside the combustion cylinder, both ends of the sleeve are hermetically and fixedly connected to the opposite ends on the combustion cylinder, an annular gas-liquid chamber is provided between the combustion cylinder and the sleeve, a liquid injection pipe is connected to the lower part of the rear end of the gas-liquid chamber, and a gas-liquid outlet pipe is connected to the upper part of the front end of the gas-liquid chamber; a gas injection pipe is provided at the center inside the combustion cylinder, the front end of the gas injection pipe is connected to the gas-liquid outlet pipe, a nozzle is installed at the rear end, and a plurality of spray holes are evenly distributed along the circumference of the nozzle; a plurality of heat absorption plates are evenly distributed along the circumference of the gas injection pipe, one end of each heat absorption plate faces the gas injection pipe and there is a gap between it and the gas injection pipe, and the other end is fixedly connected to the inner wall of the combustion cylinder.

[0005] The front included angle between the axis of the spray hole and the gas injection pipe is 42 - 48°.

[0006] A catalyst body is installed in the gas-liquid chamber, and the catalyst body is copper foil, copper oxide foil or activated carbon containing 28 - 32% cuprous oxide powder.

[0007] An electric heating coil is sleeved on the outer wall of the sleeve.

[0008] For the described combustion tube, an ignition tube sleeve is provided at its rear. Along the circumference of the ignition tube sleeve, 2 to 4 connecting ribs are evenly distributed. One end of each connecting rib is fixedly connected to the ignition tube sleeve, and the other end is fixedly connected to the combustion tube or the sleeve. The nozzle of the ignition tube sleeve faces the mouth of the combustion tube.

[0009] The described heat absorption plate is a trapezoidal plate with one right-angled side. The right-angled side of the trapezoidal plate is located at the front end of the combustion tube. The short horizontal side of the trapezoidal plate faces the described air injection pipe. The long horizontal side of the trapezoidal plate is fixedly connected to the inner wall of the combustion tube. The inclined side of the trapezoidal plate is located behind the described nozzle or spray hole.

[0010] For the described trapezoidal plate, a triangular bending part Ⅰ with an interior angle of 95° to 175° is provided at its front end. Two of the vertices of the triangular bending part Ⅰ are the two endpoints of the right-angled side in the trapezoidal plate, and the third vertex of the triangular bending part Ⅰ is any point on the short horizontal side at 1 / 3 to 1 / 5 of the front end of the trapezoidal plate.

[0011] A conical fire concentrating ring is installed at the front end of the combustion tube. The wide mouth of the fire concentrating ring is hermetically and fixedly connected to the mouth of the combustion tube along the circumference, and the narrow mouth of the fire concentrating ring is a flared mouth that turns outwards.

[0012] The described heat absorption plate is a quadrilateral plate. The outer horizontal side of the quadrilateral plate is fixedly connected to the inner wall of the combustion tube. The front end of the outer horizontal side is located at the front end of the combustion tube. The inner horizontal side of the quadrilateral plate faces the described air injection pipe. The front inclined side of the quadrilateral plate extends into the described fire concentrating ring, and the rear inclined side of the quadrilateral plate is located behind the described nozzle or spray hole.

[0013] For the described quadrilateral plate, a triangular bending part Ⅱ with an interior angle of 95° to 175° is provided at its front end. Two of the vertices of the triangular bending part Ⅱ are the two endpoints of the front inclined side in the quadrilateral plate, and any point on the inner horizontal side at 0 to 1 / 3 from the back to the front in the quadrilateral plate located in the fire concentrating ring is the third vertex of the triangular bending part Ⅱ.

[0014] The working mode and principle of the present invention are as follows: First, preheat the vaporizing combustion head so that components such as the combustion tube, sleeve, gas-liquid outlet pipe, manifold, air injection pipe, and heat absorption plate in the vaporizing combustion head reach the specified temperature. Usually, it is better to visually see that each heat absorption plate reaches a fiery red color (about 485 degrees to 885 degrees). Then, inject liquid fuel into the described gas-liquid chamber through the liquid injection pipe. When the liquid fuel passes through the gas-liquid chamber, gas-liquid outlet pipe, manifold, and air injection pipe in sequence, it is continuously vaporized and expanded by the high temperature, and the vaporized gas further becomes superheated gas at high temperature. Finally, it is sprayed out at high speed from the spray holes on the nozzle and meets the oxygen in the air to assist combustion and burn violently. During combustion, the combustion tube, sleeve, gas-liquid outlet pipe, manifold, and air injection pipe are heated again to vaporize the liquid fuel, and the work is carried out in a cycle.

[0015] The advantages of the present invention are as follows: The liquid fuel is heated into gas for combustion, which can save more fuel compared with traditional atomized combustion. Under the condition of using the same liquid fuel, after the liquid fuel in the present application is vaporized, it becomes superheated gas, with a higher combustion temperature, high utilization rate of clean fuel, less heat loss, and remarkable energy conservation and environmental protection effects.

[0016] The spray holes with a front included angle of 42 - 48° can make the sprayed vaporized fuel be sprayed and burned along the air flow direction, avoid air resistance, and make the combustion effect better.

[0017] When using alcohol-based environmental protection fuel as the liquid fuel, an appropriate proportion of water can be added to the fuel. When the heat absorption plate burns into a fiery red color, the catalyst can catalytically decompose the water in the liquid fuel into hydrogen and oxygen for combustion support. In the presence of carbon, the liquid fuel decomposes into combustible gas, which can further increase the flame temperature. It is measured that when the alcohol-based environmental protection fuel with 6000 kcal / Kg after adding water (the modified alcohol-based environmental protection fuel disclosed in Chinese Patent Application No. ZL201110066595.7) is gasified and burned, the flame temperature can reach 1065°C, which is 235°C higher than the temperature of atomized combustion of other fuels with 10000 kcal / Kg.

[0018] Using an electric heating coil can enable the gasification combustion head to quickly reach the working temperature, with fast startup, no need for other heat source assistance, and low energy consumption.

[0019] The ignition tube sleeve can be connected to the ignition tube on the atomized combustion machine, that is, the gasification combustion head is installed at the front end of the atomized combustion machine, making the nozzle of the ignition tube of the atomized combustion machine face the mouth of the combustion cylinder and the central axes of the two tend to coincide. Based on the above structure, 1. The components of the gasification combustion head can be heated by the atomized combustion machine to reach the startup temperature. After the gasification combustion head starts, the atomized combustion machine can be turned off; 2. The atomized combustion machine and the combustion cylinder are combined into a composite double-stage gasification combustion head. When using alcohol-based environmental protection fuel as the liquid fuel, the flame temperature obtained from the first-stage atomized combustion plus the second-stage gasification decomposition combustion is higher. When this structure is used in combination with the catalyst structure, an appropriate proportion of water can be added to the alcohol-based environmental protection fuel, and the obtained flame temperature is much higher than that of the unmodified alcohol-based environmental protection fuel without adding water.

[0020] The front part of the trapezoidal plate has a larger area, which can increase the heat absorption area. The area of the rear hypotenuse gradually converges to avoid heat loss due to air entry. This shape has better heat absorption and heat conduction effects and less heat loss.

[0021] The triangular bending part Ⅰ can guide the sprayed combustion air flow to have a certain rotational force. When the matched gas-gas and gas-liquid form a rotating body, the gas density of the same volume can be increased, the oxygen content is increased, the combustion is more complete, the flame is concentrated and powerful, and the combustion temperature is higher.

[0022] The described fire concentrating ring compresses the combusting gas through the principle of "converging and concentrating fire", making the density of the combusting gas greater, the flow rate faster, and the oxygen content higher. It can effectively increase the temperature at the outlet of the burner head and the flame temperature, and at the same time obtain a longer flame.

[0023] One end of the described quadrilateral plate extends into the fire concentrating ring to obtain high-temperature heat energy to maintain the working efficiency of the burner head. The described triangular bending part II can pressurize and rotate the compressed combusting gas in the fire concentrating ring, further increasing the density and oxygen content of the combusting gas, and can obtain a flame that rotates forward powerfully, has a strong firepower, and a longer spraying and burning distance, further increasing the environmental protection and energy-saving effect.

[0024] It has been proved by practice that under the condition of using the same liquid fuel, the flame temperature generated by the gasification combustion of this application is 250 - 350 °C higher than that generated by the traditional atomization combustion, fully indicating that the gasification burner head of this application has a high thermal efficiency. Description of the Drawings

[0025] Figure 1 It is a schematic diagram of the internal structure of the gasification burner head of the present invention in the pitching direction.

[0026] Figure 2 It is Figure 1 The schematic cross-sectional structure diagram along the A - A direction in

[0027] Figure 3 It is Figure 1 The enlarged schematic diagram of the partial B in

[0028] Figure 4 It is the front view of the front end of the gasification burner head of the present invention.

[0029] Figure 5 It is Figure 4 The rear view of

[0030] Figure 6 It is another schematic diagram of the structure of the gasification burner head of the present invention.

[0031] Figure 7 It is Figure 6 The left view of

[0032] Figure 8 It is the assembly schematic diagram of the gasification burner head of the present invention and the atomization burner.

[0033] Figure 9 It is the schematic diagram of the structure where the heat absorption plate in the present invention is a trapezoidal plate.

[0034] Figure 10 It is Figure 9 The top view of

[0035] Figure 11 This is a schematic structural view of the heat absorption plate being a quadrilateral plate in the present invention.

[0036] In the figure, 1 is a sleeve, 2 is a zirconium cotton insulation layer, 3 is a gas-liquid chamber, 4 is a catalyst body, 5 is a combustion cylinder, 6 is a gas-liquid outlet pipe, 7 is a manifold, 8 is a jet pipe, 9 is a jet hole, 10 is a nozzle, 11 is a heat absorption plate, 12 is a liquid injection pipe, 13 is the axis line of the jet hole, 14 is the front included angle, 15 is the axis line of the jet pipe, 16 is an ignition pipe sleeve, 17 is a connecting rib, 18 is a rear bevel edge, 19 is a quadrilateral plate, 20 is an outer horizontal side, 21 is an inner horizontal side, 22 is an electric heating coil, 23 is a front bevel edge, 24 is a flame concentrating ring, 25 is a flare, 26 is an atomizing burner, 27 is an ignition pipe, 28 is a trapezoidal plate, 29 is a long horizontal side, 30 is a right-angled side, 31 is a triangular bending part Ⅰ, 32 is a short horizontal side, 33 is an oblique angled side, 34 is an interior angle, 35 is a triangular bending part Ⅱ. Specific embodiments

[0037] An atomizing combustion head, which includes a combustion cylinder 5. A sleeve 1 is sleeved outside the combustion cylinder, and both ends of the sleeve are hermetically and fixedly connected to the opposite ends on the combustion cylinder. An annular gas-liquid chamber 3 is provided between the combustion cylinder and the sleeve. A liquid injection pipe 12 is connected to the lower part at the rear end of the gas-liquid chamber, and a gas-liquid outlet pipe 6 is connected to the upper part at the front end of the gas-liquid chamber; a jet pipe 8 is provided at the center inside the combustion cylinder. The front end of the jet pipe is connected to the gas-liquid outlet pipe, and a nozzle 10 is installed at the rear end. A plurality of jet holes 9 are evenly distributed along the circumference of the nozzle; a plurality of heat absorption plates 11 are evenly distributed along the circumference of the jet pipe. One end of each heat absorption plate faces the jet pipe and there is a gap between it and the jet pipe, and the other end is fixedly connected to the inner wall of the combustion cylinder.

[0038] The front included angle 14 between the axis line 13 of the jet hole and the axis line 15 of the jet pipe is 42 - 48°.

[0039] The gas-liquid chamber is internally provided with a catalyst body 4, and the catalyst body is copper foil, copper oxide foil or activated carbon containing 28 - 32% cuprous oxide powder.

[0040] The sleeve has an electric heating coil 22 sleeved on its outer wall.

[0041] The combustion cylinder is provided with an ignition pipe sleeve 16 at its rear. There are 2 - 4 connecting ribs 17 evenly distributed along the circumference of the ignition pipe sleeve. One end of each connecting rib is fixedly connected to the ignition pipe sleeve, and the other end is fixedly connected to the combustion cylinder or the sleeve. The pipe orifice of the ignition pipe sleeve faces the barrel orifice of the combustion cylinder.

[0042] The heat absorption plate is a trapezoidal plate 28 with one end being a right-angled side. The right-angled side 30 of the trapezoidal plate is located at the front end of the combustion cylinder. The short horizontal side 32 of the trapezoidal plate faces the jet pipe. The long horizontal side 29 of the trapezoidal plate is fixedly connected to the inner wall of the combustion cylinder. The oblique angled side 33 of the trapezoidal plate is located behind the nozzle or the jet hole.

[0043] The trapezoidal plate has a triangular bending portion I 31 with an interior angle 34 of 95° to 175° at its front end. Two of the vertices of the triangular bending portion I are the two endpoints of the right-angled side of the trapezoidal plate, and the third vertex of the triangular bending portion I is any point on the short horizontal side at 1 / 3 to 1 / 5 of the front end of the trapezoidal plate.

[0044] A conical fire concentrating ring 24 is installed at the front end of the combustion cylinder. The wide mouth of the fire concentrating ring is hermetically and fixedly connected to the mouth of the combustion cylinder along the circumference, and the narrow mouth of the fire concentrating ring is an outwardly turned flared mouth 25.

[0045] The heat absorption plate described is a quadrilateral plate 19. The outer horizontal side 20 of the quadrilateral plate is fixedly connected to the inner wall of the combustion cylinder. The front end of this outer horizontal side is located at the front end of the combustion cylinder. The inner horizontal side 21 of the quadrilateral plate faces the spray pipe. The front inclined side 23 of the quadrilateral plate extends into the fire concentrating ring, and the rear inclined side 18 of the quadrilateral plate is located behind the nozzle or the spray hole.

[0046] The quadrilateral plate has a triangular bending portion II 35 with an interior angle of 95° to 175° at its front end. Two of the vertices of the triangular bending portion II are the two endpoints of the front inclined side of the quadrilateral plate. Any point on the inner horizontal side at 0 to 1 / 3 from the back to the front in the quadrilateral plate located within the fire concentrating ring is the third vertex of the triangular bending portion II.

[0047] The following further elaborates on the vaporizing combustion head (hereinafter referred to as the combustion head) of the present application in conjunction with the accompanying drawings:

[0048] As Figures 1 to 5 shown, in the present application, the "front" refers to the end of the combustion head that sprays flames outward during operation, and the "rear" refers to the end of the combustion head that inhales air for combustion assistance during operation;

[0049] There are 2 to 3 gas-liquid outlet pipes; the front end of the spray pipe is simultaneously connected to each gas-liquid outlet pipe through a manifold 7, that is, one end of the manifold is connected to the spray pipe, and the other end is simultaneously connected to each gas-liquid outlet pipe.

[0050] The combustion cylinder, sleeve, liquid injection pipe, gas-liquid outlet pipe, manifold, spray pipe, heat absorption plate, fire concentrating ring, etc. are cast from cast iron material or high-temperature resistant cast steel material or high-temperature resistant stainless steel material, or can be rolled and welded from iron plate or steel plate or high-temperature resistant stainless steel plate or titanium plate or titanium alloy plate, or can be made by turning with a lathe according to design requirements and then welded with iron pipe or steel pipe or various high-temperature resistant stainless steel pipes or titanium and titanium alloy pipes, etc. Among them, the heat absorption plate is cut according to the shape and size required by the design, and the above materials with a temperature resistance of more than 1300°C are also used and fixed on the inner wall of the combustion cylinder by welding to prevent it from being burned out during long-term use and affecting its vaporization effect;

[0051] The front section of the combustion cylinder has a combustion chamber in its internal space, and the rear section has an intake chamber in its internal space. The nozzle is located in the combustion chamber;

[0052] The described nozzle can be purchased as a copper hexagonal nut type, or can be made of stainless steel nuts, iron nuts or copper nuts. One end of the nut is sealed by welding, and the other end of the nut is threadedly connected to the rear end of the gas injection pipe by using a threaded connection structure. Holes are drilled on each of the six surfaces of the nut to communicate each hole with the gas injection pipe. The described nozzle can also adopt a commercially available high-temperature resistant multi-tube nozzle, which can be installed at the rear end of the gas injection pipe. The aperture size and the number of holes are determined according to actual needs, but it is necessary to ensure that the gas is evenly distributed for combustion.

[0053] The gas-liquid outlet pipe, the manifold and the gas injection pipe are hermetically fixedly connected by welding, or the above three pipes are formed into one body by bending or molding. The liquid injection pipe is sequentially communicated with the gas-liquid outlet pipe, the manifold and the gas injection pipe through a chamber.

[0054] The volume of the gas-liquid chamber is determined according to parameters such as the size of the burner head and the feeding pressure. However, it should be noted that the phenomenon of delayed injection of the injected fuel and resulting afterburning caused by too large a volume of the combustion chamber should be reduced as much as possible. According to actual needs such as the demand for combustion heat energy, the wall thickness of each pipe or cylinder and the number and thickness of each heat absorption plate are determined according to actual needs. The size, length, thickness and other parameters of the flame concentrating ring are also determined according to actual needs.

[0055] The injection direction of the injection holes is forward injection. The front included angle refers to the included angle in the front formed between the axis line of the injection hole and the axis line of the gas injection pipe. The front included angle between the axis line of each injection hole and the axis line of the gas injection pipe is preferably 45°.

[0056] The outer wall of the described sleeve is wrapped with a zirconium wool heat insulation layer 2. It can wrap the heat energy of the vaporizing burner head inside the vaporizing burner head, so that the heat energy is fully utilized. The zirconium wool heat insulation layer is a commercially available material, and it can be cut and used after purchase.

[0057] Copper foil is loaded into the gas-liquid chamber. After the gas-liquid chamber is closed, when using the vaporizing burner head, the vaporizing burner head is preheated to the working temperature, the burner head is ignited and made to work for half an hour, and a copper oxide layer is formed on the surface of the copper foil in the gas-liquid chamber, and then it can be used as a catalyst body. Or, copper foil that forms copper oxide by heating is directly loaded into the gas-liquid chamber.

[0058] The method for making the activated carbon containing 28-32% cuprous oxide powder is as follows: Mix the commercially available cuprous oxide powder and the commercially available activated carbon in the stated ratio, preferably in the ratio of 30% cuprous oxide powder to 70% activated carbon. After uniformly mixing the cuprous oxide powder and the activated carbon, a mixture is obtained. Under continuous stirring, calculated by weight, add liquid silica gel equal to 28-32% of the total amount of the mixture to the mixture uniformly. The addition amount of the liquid silica gel is preferably 30%. After continuously stirring evenly, an adhesive is obtained. Press the adhesive into a strip, rod or sheet shape that can be placed in the gas-liquid chamber with a mold.

[0059] As Figures 6 to 8 shown, the electric heating coil is a commercially available product. Purchase it according to the sleeve diameter and use it according to its instruction manual. The electric heating coil is a device that can convert electrical energy into heat energy to heat an object. Compared with general fuel heating, electric heating can obtain a higher temperature, and the heating is rapid, and it is easy to realize automatic control and remote control of the temperature. Applying the structure of the electric heating coil and being equipped with an AC fan or a DC fan for active air supply, and using a solenoid valve and an automatic control facility for intelligent control, the burner head of the present application can be used in the catering service industry.

[0060] The ignition tube sleeve is used to connect with the ignition tube 27 in the atomizing burner 26. The atomizing burner is a commercially available product. Select an appropriate model according to needs and use it. The ignition tube sleeve is used to surround the ignition tube of the atomizing burner, so as to fix the burner head at the front end of the ignition tube of the atomizing burner through the connecting ribs. That is, the size and dimensions of the ignition tube sleeve depend on the outer diameter of the ignition tube. The ignition tube sleeve can purchase a commercially available semi-buckle metal hoop, which is convenient for disassembly, or a circular metal ring can also be used and fixed on the ignition tube of the atomizing burner through conventional connecting parts or methods such as set screws or bolts.

[0061] When the atomizing burner is directly used in cooperation with the burner head of the present application, problems such as occasional ignition failure, shutting down the burner, high temperature of the burner head, flame lag back to the inside of the burner and burning out accessories, and explosion caused by backflow during combustion will occur. In the present application, the ignition tube sleeve is connected to the combustion cylinder or sleeve through 2-4 connecting ribs, and a large amount of external air is supplemented at the gaps along the circumference of each connecting rib, so that the combustion air flow is sprayed along the designed direction of the burner head, perfectly solving the above technical problems.

[0062] As Figure 9 and Figure 10As shown in the figure, on the trapezoidal plate, any point a located at 1 / 3 to 1 / 5 of the front end of the short horizontal side and the two end points b and c of the right-angled side enclose a triangular area. Among them, point a is used as the folding point on the short horizontal side, and line ab is used as the folding line. The trapezoidal plate within this triangular area is bent to one side until the included angle between the short horizontal side of line ac and the other short horizontal sides is 95 to 175°, and this included angle is preferably 166°. The upward bending directions of the trapezoidal plates located in the same combustion cylinder are the same.

[0063] As Figure 11 shown in the figure, on the quadrilateral plate, any point d on the inner horizontal side within the range from the back to the front 0 to 1 / 3 of the quadrilateral plate within the fire concentrating circle and the two end points e and f of the front inclined side enclose a triangular area. Among them, point d is used as the folding point on the inner horizontal side, and line de is used as the folding line. The quadrilateral plate within this triangular area is bent to one side until the included angle between the inner horizontal side of line df and the other inner horizontal sides is 95 to 175°, and this included angle is preferably 125 to 155°, especially 135° and 145°. Figure 11 In the figure, line eg is the dividing line. On the right end (front end) of line eg is one side of the quadrilateral plate placed within the fire concentrating circle, and on the left end (rear end) is one side of the quadrilateral plate placed within the combustion cylinder. The bending directions on the quadrilateral plates located in the same combustion cylinder are the same.

[0064] Whether using an atomizing burner or an electric heating coil to make the components related to the burner head reach the working temperature requirements, then the burner head can heat the heat absorption plate by its own combustion heat. The heat absorption plate transfers the heat to the gas-liquid chamber to heat the liquid fuel, causing it to vaporize and decompose. The gas moves to the vaporization nozzle for uniform combustion. For example: Use the flame ejected from the ignition tube of the atomizing burner to preheat the components of the burner head. When the preheating requirements are met, open the fuel pump valve to inject liquid fuel into the burner head. The atomized flame ignites the burner head, and the air volume can be increased through auxiliary equipment such as a blower. After the flame burns stably, the atomizing burner can be turned off, and only the gasification combustion of the burner head is used to meet the heat energy required by itself. Or the atomizing burner can also not be turned off, and the first-stage fire of the atomizing burner and the second-stage fire of the burner head are used simultaneously to supply the required facilities. Therefore, the burner head of this application can not only independently vaporize the fuel for decomposed high-temperature combustion, but also be supplied to the manufacturers of atomizing burners. Install the burner head of this application on the atomizing burner to form a vaporization and decomposition type burner that can vaporize and decompose the fuel. The burner head of this application has been verified through a large number of applications. A small-power burner can be used in combination with different power burner heads. The purpose of using the burner is only to preheat the burner head. To truly make the heat absorption plate reach a stable temperature, it is mainly achieved by the ultra-high temperature generated after the gasification combustion of the burner head, making the heat absorption plate continuously show a fiery red color. During use, it can be adjusted to a smaller value at the beginning, then gradually increased, and finally adjusted to the required heat.

[0065] Working principle of the burner head of the present application: The burner head is preheated by the first-stage fire of the atomizing burner to reach the working temperature, and then the second-stage fire can be ignited. When the liquid fuel containing water or other fuels is pumped into the feed pipe and flows to the bottom of the gas-liquid chamber. The liquid fuel will be heated, vaporized, and catalytically decomposed when it contacts the inner wall of the gas-liquid chamber and the surface of the catalyst. When the liquid fuel is pumped into the gas-liquid chamber, the fuel at the lower part of the gas-liquid chamber is liquid, the fuel in the middle part is in a gas-liquid mixed state, and most of the fuel at the upper part is vaporized and decomposed into gas. Assuming that there is no 100% vaporization, the remaining liquid fuel passing through the red-hot gas-liquid outlet pipe, manifold, and jet pipe will also be vaporized at high temperature. The vaporized gas becomes superheated gas, which is more likely to decompose water into hydrogen and oxygen. As long as it is ejected from the spray holes of the nozzle, it can burn evenly and violently. The above principle makes the working condition of the burner head of the present application more stable as the working time is longer. The gas discharged by the gasification combustion is more environmentally friendly and energy-saving than the gas generated by the atomizing combustion. It can burn continuously in a cycle, continuously heating the heating facility to meet the requirements, and ultimately achieving fuel savings and environmental protection. However, there are certain technical requirements for the liquid fuel. One is that there should be no mechanical impurities; the other is that there should be no chemical impurities and gums, otherwise the oil circuit and the cavity will be blocked. The burner head of the present application is particularly suitable for using the fuels prepared by Chinese Patent Application Nos. ZL201110066595.7 and ZL201111100764377.6.

[0066] Gasification and decomposition route of the present invention: Ignite the atomizing burner → Preheat the burner head → Reach the required preheating → Ignite the burner head → Gasify and decompose the gas → Gas-liquid passage → Superheated gas → Uniform combustion → Heating facility → After the burner head works stably or turn off the atomizing burner → Only the burner head heats the heating facility → Meet the user's needs.

[0067] Compared with the prior art, the present application has a simple design structure, creates a gasification combustion method, thus changing the original atomizing combustion method. The gasification combustion method has a strong combustion firepower, rotates concentratedly and powerfully, has a high combustion temperature (about 250-350°C higher than the atomizing combustion method), small heat loss, low fuel consumption, safe and practical, and high thermal efficiency. When adding some high-boiling substances or other liquid fuels to the modified alcohol-based environmental protection fuel, gasification combustion can also be carried out under the action of gasification and catalysis of the burner head. It not only saves fuel, but also greatly improves its thermal efficiency. At the same time, the flue gas discharged meets the national environmental protection standard requirements, and it is also safe and reliable to use, has strong applicability, and broad application prospects, and is a product needed by people.

Claims

1. Gasification type combustion head, characterized in that: It includes a combustion cylinder (5). A sleeve (1) is sleeved outside the combustion cylinder. Both ends of the sleeve are hermetically and fixedly connected to the opposite ends on the combustion cylinder. An annular gas-liquid chamber (3) is provided between the combustion cylinder and the sleeve. A liquid injection pipe (12) is connected to the lower part at the rear end of the gas-liquid chamber, and a gas-liquid outlet pipe (6) is connected to the upper part at the front end of the gas-liquid chamber. In the center inside the combustion cylinder, there is a jet pipe (8). The front end of the jet pipe is connected to the gas-liquid outlet pipe, and a nozzle (10) is installed at the rear end. A plurality of spray holes (9) are evenly distributed along the circumference of the nozzle. A plurality of heat absorption plates (11) are evenly distributed along the circumference of the jet pipe. One end of each heat absorption plate faces the jet pipe and there is a gap between them, and the other end is fixedly connected to the inner wall of the combustion cylinder.

2. The vaporizing combustion head according to claim 1, wherein: The gas-liquid chamber is filled with a catalyst body (4), and the catalyst body is copper foil, copper oxide foil or activated carbon containing 28-32% cuprous oxide powder.

3. The vaporizing combustion head according to claim 1, wherein: On the outer wall of the sleeve, an electric heating coil (22) is sleeved.

4. The vaporizing combustion head according to claim 1, wherein: Behind the combustion cylinder, there is an ignition pipe sleeve (16). Along the circumference of the ignition pipe sleeve, 2-4 connecting ribs (17) are evenly distributed. One end of each connecting rib is fixedly connected to the ignition pipe sleeve, and the other end is fixedly connected to the combustion cylinder or the sleeve. The pipe orifice of the ignition pipe sleeve faces the barrel orifice of the combustion cylinder.

5. The vaporizing combustion head according to claim 1, characterized in that: The heat absorption plate is a trapezoidal plate (28) with one right-angled side. The right-angled side (30) of the trapezoidal plate is located at the front end of the combustion cylinder. The short horizontal side (32) of the trapezoidal plate faces the jet pipe. The long horizontal side (29) of the trapezoidal plate is fixedly connected to the inner wall of the combustion cylinder. The inclined side (33) of the trapezoidal plate is located behind the nozzle or the spray holes.

6. The vaporizing combustion head according to claim 5, wherein: At the front end of the trapezoidal plate, there is a triangular bending part Ⅰ (31) with an inner angle (34) of 95-175°. Two of the vertices of the triangular bending part Ⅰ are the two endpoints of the right-angled side in the trapezoidal plate, and the third vertex of the triangular bending part Ⅰ is any point on the short horizontal side at 1 / 3-1 / 5 of the front end of the trapezoidal plate.

7. The vaporizing combustion head according to claim 1, characterized in that: At the front end of the combustion cylinder, a conical fire concentrating ring (24) is installed. The wide mouth of the fire concentrating ring is hermetically and fixedly connected to the barrel orifice of the combustion cylinder along the circumference, and the narrow mouth of the fire concentrating ring is an outward-turning flared mouth (25).

8. The vaporizing combustion head according to claim 7, wherein: The heat absorption plate is a quadrilateral plate (19). The outer horizontal side (20) of the quadrilateral plate is fixedly connected to the inner wall of the combustion cylinder. The front end of the outer horizontal side is located at the front end of the combustion cylinder. The inner horizontal side (21) of the quadrilateral plate faces the jet pipe. The front inclined side (23) of the quadrilateral plate extends into the fire concentrating ring, and the rear inclined side (18) of the quadrilateral plate is located behind the nozzle or the spray holes.

9. The vaporizing combustion head according to claim 8, characterized in that: At the front end of the quadrilateral plate, there is a triangular bending part Ⅱ (35) with an inner angle of 95-175°. Two of the vertices of the triangular bending part Ⅱ are the two endpoints of the front inclined side in the quadrilateral plate, and the third vertex of the triangular bending part Ⅱ is any point on the inner horizontal side at 0-1 / 3 from the back to the front in the quadrilateral plate located in the fire concentrating ring.

Images