A multi-stage split-body energy-saving combustion device for liquid fuel

Abstract

The application discloses a multi-stage split energy-saving combustion device for liquid fuel, which is composed of a combustion ring and an ion combustion body, the ion combustion body is composed of a base, a vaporization combustion cylinder and a cyclone air inlet cylinder, a first combustion cavity is formed between the outer wall of the cyclone air inlet cylinder and the vaporization combustion cylinder, a second combustion cavity is formed by leaving a cavity between the combustion cylinder and the ion combustion body, and a third combustion cavity is formed by the ring on the combustion cylinder and the combustion cylinder. Compared with the prior art, the application essentially changes the atomization combustion mode of the original electric injection fuel stove, does not need high-pressure atomization nozzles, realizes high-temperature vaporization combustion of the liquid fuel in the first combustion cavity, stably combusts and fully vaporizes in the second combustion cavity, fully combusts and generates heat in the third combustion cavity, and compared with the electric injection stove, the energy consumption is lower, the heat utilization rate is increased by nearly one time, the safety is higher, the independence is good, and the applicability is wide.

Description

Technical Field

[0001] This invention relates to the field of liquid fuel stoves, and more particularly to a multi-stage split-type energy-saving combustion device for liquid fuels. Background Technology

[0002] In the vast commercial stove market, liquefied petroleum gas (LPG) fuel, such as gas cylinders, is widely used in schools, 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. 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 clean fuel for kitchen stoves, made from Fischer-Tropsch synthetic hydrocarbons, industrial white oil, high-flash-point hydrocarbon compounds, and other raw materials, compounded with high-molecular-weight oxygenated compounds and additives, primarily composed of alkanes. The main advantages of this fuel are its wide applicability, low price, high calorific value, good safety, and cleanliness and environmental friendliness.

[0003] Currently, liquid fuel stoves are mainly electronically injected fuel stoves in terms of fuel supply methods. They are primarily used in commercial high-powered stoves, such as Chinese cooking stoves and large wok stoves. They are also used in other kitchen stoves such as steamers, braising pots, cooking ovens, clay pot stoves, and heaters. They use pulse oil pumps to vaporize the fuel.

[0004] The combustion process of an electronically fuel-injected stove requires that the liquid fuel be pressurized to 12 kg to ensure that the liquid fuel sprayed from the atomizing nozzle is in a mist form. This mist-like liquid fuel mixes with the air pumped in by the blower within the stove's air chamber for combustion. A 20,000-volt voltage is then generated by the ignition needle to ignite the mixture, achieving primary combustion within the stove's air chamber. After passing through the flame ring, the mixture is released into the burner for secondary, more complete combustion, thus heating the cookware. (See [link to relevant documentation]). Figure 7 Electric fuel injection stoves use an open combustion system, requiring the liquid fuel to be pressurized and atomized before being injected. Combined with a blower to aid combustion and the volume expansion of the liquid fuel during vaporization and combustion, the pressure inside the burner is also relatively high. Therefore, it's common to see flames shooting out from the sides of the pot when using high heat on many commercial stoves. At this time, much of the fuel doesn't have time to heat the bottom of the pot before being ejected from the exhaust vents on both sides of the burner. This results in a very low heat utilization rate for electric fuel injection stoves currently on the market, mostly around 22%.

[0005] Because the pressurized fuel cannot directly contact the bottom of the pot and must be kept at a certain distance from the pot, it is necessary to ensure that the liquid fuel has enough space to vaporize. As a result, the flame cannot be concentrated on the bottom of the pot for sufficient heating during secondary combustion. Although a flame-gathering ring is added to the stove to concentrate the flame, it is still difficult for the flame to be completely concentrated on the bottom of the pot. This is also the reason for the low heat utilization of open combustion systems like electric fuel injection stoves.

[0006] Electronic fuel injection only atomizes liquid fuel to meet combustion requirements, not truly vaporizes it, making rapid and complete combustion difficult. Furthermore, liquid fuel requires high pressure for atomization, necessitating a large power supply (220V) and external wiring, limiting its usability and preventing independent outdoor use. Existing electronic fuel injection stoves cannot be adjusted to a low flame because this reduces fuel intake, lowering nozzle pressure and hindering atomization. Therefore, a minimum flow rate is required at a certain pressure; for example, a 0.65mm diameter atomizing nozzle requires a minimum flow rate of 700g / h. Consequently, existing electronic fuel injection stoves are only suitable for high-heat cooking environments like restaurant kitchens and canteens, unsuitable for low-heat settings like hot pot restaurants and clay pot rice restaurants. Additionally, many gas stoves have flameout protection, which electronic fuel injection stoves lack due to their high operating temperatures and limited operating environment. Summary of the Invention

[0007] The purpose of this invention is to provide a multi-stage split-type energy-saving combustion device for liquid fuels, which solves the above-mentioned technical problems, subverts the combustion method of existing electronic fuel injection stoves, can completely replace the use scenarios of existing electronic fuel injection stoves, improves the heat utilization rate by nearly 100%, and greatly reduces energy consumption.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is: a multi-stage split-type energy-saving combustion device for liquid fuels, wherein the combustion device comprises a combustion chamber and an ion burner, the ion burner comprising a base, a vaporization combustion cylinder, and a cyclone intake cylinder, the vaporization combustion chamber being vertically arranged at the center of the base, the top of the vaporization combustion chamber being provided with ion flame-dispersing teeth, the cyclone intake cylinder being located inside the vaporization combustion cylinder, the outer wall of the cyclone intake cylinder forming a primary combustion chamber with the vaporization combustion cylinder, and a combustion chamber being provided at the top of the combustion cylinder. The upper ring has a lower ring for the combustion chamber. The bottom of the combustion chamber is fixedly connected to the upper end of the vaporization combustion chamber. A cavity is left between the lower ring of the combustion chamber and the ion fire-distributing teeth to form a secondary combustion chamber. A tertiary combustion chamber is formed between the upper ring of the combustion chamber and the lower ring of the combustion chamber. An oil inlet and an ignition plug mounting hole are opened on the side of the ion burner. The oil inlet of the pipe is connected to the interior of the primary combustion chamber. An air inlet and an impeller air inlet channel are provided at the bottom of the ion burner. The impeller air inlet channel is connected to the interior of the cyclone air inlet through the air inlet.

[0009] Preferably, the device also includes a combustor mounting box, which is a hollow cavity structure. The ion combustor is mounted on the upper surface of the combustor mounting box, and the impeller air inlet channel of the ion combustor is located inside the combustor mounting box. The side of the combustor mounting box is provided with a fan air inlet and an oil inlet.

[0010] Preferably, the system also includes a blower and an oil pump, wherein the blower is connected to the blower inlet of the combustor mounting box, and the oil pump is connected to the ion combustor through an oil inlet pipe.

[0011] Preferably, an annular oil passage is formed on the inner wall of the vaporization combustion cylinder, and an atomizing combustion mesh is welded onto the oil passage.

[0012] Preferably, the side of the ion burner is provided with an oil inlet and an ignition plug mounting hole, both of which are connected to the oil circuit. The oil inlet is arranged along the tangential direction of the vaporization combustion cylinder.

[0013] Preferably, the lower ring of the combustion chamber is an annular cover, located inside the combustion chamber and welded to the lower part of the combustion cylinder. A fire-gathering hole is provided in the middle of the lower ring of the combustion chamber, and the upper ring of the combustion chamber is annular and welded to the upper end face of the combustion cylinder.

[0014] Preferably, the device also includes a combustion thermocouple probe, which is vertically mounted on the ion burner and located near the combustion chamber.

[0015] Preferably, the combustion chamber is elongated, with its upper end extending to the bottom of the stove.

[0016] Preferably, a heat-insulating groove is provided between the outer wall of the vaporization combustion chamber and the base.

[0017] Preferably, the base, vaporization combustion chamber, impeller air intake channel, and cyclone air intake chamber are integrally precision cast.

[0018] Preferably, the base is provided with an annular mounting plate, and the annular mounting plate is provided with positioning mounting holes and thermocouple probe mounting holes.

[0019] Preferably, the cyclone air inlet consists of an air chamber and an air chamber cover. The air chamber cover is welded to the upper end of the air chamber, the lower end of the air chamber is fixed to the base, the bottom of the base has an air inlet that communicates with the inside of the air chamber, and several air outlets are vertically opened around the air chamber.

[0020] Preferably, the impeller air inlet channel is composed of helical teeth and a helical tooth cover plate. There are several helical teeth, which are evenly distributed along the circumference of the air inlet at the bottom of the base. The helical tooth cover plate is welded to the helical teeth.

[0021] Preferably, the air outlet is divided into a high-level air outlet and a low-level air outlet, which are arranged alternately. The high-level air outlet is located at the upper part of the air cavity, and the low-level air outlet extends from the upper part of the air cavity to the lower part of the air cavity.

[0022] Compared with the prior art, the advantages of the present invention are as follows:

[0023] (1) This invention fundamentally changes the atomization combustion method of the original electric fuel injection stove through the structural design of the ion combustion body. It transforms the open combustion method of the original electric fuel injection stove into a closed multi-stage combustion method. It does not require atomization through a high-pressure atomizing nozzle. It utilizes the temperature generated by the primary combustion in the first-stage combustion chamber, combined with the air intake of the cyclone air intake, to achieve true high-temperature vaporization of liquid fuel. It also achieves stable combustion and full vaporization in the second-stage combustion chamber and full combustion and heat generation in the third-stage combustion chamber. The heat generated will not rush out from both sides of the pot, greatly reducing heat loss. Compared with electric fuel injection stoves, the heat utilization rate is increased by nearly 100%. The energy consumption of oil and electricity is only half of the original. Moreover, it is safer, more independent, and has a wide range of applications.

[0024] (2) The present invention achieves full vaporization and stable combustion of liquid fuel through the design of a two-stage combustion chamber. When the liquid fuel is in the low-fire mode, it can stably fission and burn on the ion-split flame teeth of the two-stage combustion chamber, continuously generating stable heat.

[0025] (3) This invention, through the design of a long cylindrical combustion chamber, utilizes an open combustion method within the burner basin of the electric fuel injection stove. The liquid fuel is fully combusted within the three-stage combustion chamber, and the heat generated is directly concentrated at the bottom of the cookware for centralized heating. Compared to direct flame heating, this provides better heating and significantly improves heat utilization. As the liquid fuel burns within the three-stage combustion chamber, the heat radiation generated by the combustion chamber is also transferred from the sides to the burner basin, increasing the temperature inside the basin and preventing localized low temperatures that could cause the liquid fuel to cool down.

[0026] (5) The present invention designs a combustion body mounting box, which serves as a wind chamber. The fan blows air into the combustion body mounting box and enters the ion combustion body spirally through the impeller air intake channel, realizing the spiral jet of the cyclone air intake tube. While the fan blows air, it can also dissipate heat at the bottom of the ion combustion body, avoiding the combustion body mounting box from getting too hot and avoiding burns to users. It also provides good protection for the lines and pipelines.

[0027] (6) In order to further improve the vaporization effect of liquid fuel, the present invention provides an annular oil passage on the inner wall of the vaporization combustion chamber, and welds an atomizing combustion mesh on the oil passage, which comes into contact with and mixes with the air sprayed out by the cyclone intake, making the liquid fuel easier to vaporize and burn.

[0028] (6) Through structural design, the present invention allows thermocouple probes to be installed on the annular mounting plate of the base. The thermocouple probes do not need to be placed inside the combustion chamber, and flameout protection is achieved through monitoring of the combustion tube.

[0029] (7) Through the casting structure design, the base, vaporization combustion cylinder, impeller air inlet channel and cyclone air inlet cylinder are integrally precision cast, which greatly increases the structural connection stability and sealing. The entire ion burner only has the flame outlet on the top of the vaporization combustion cylinder and the air inlet of the impeller air inlet channel at the bottom of the base, so there is no need to worry about the leakage of liquid fuel.

[0030] (8) This invention fundamentally changes the vaporization combustion method of liquid fuel. It only requires a 12V DC fan with a maximum power of 60W. When the fire is small, the fan only needs to work at 20W. It can be used independently with a portable battery. It has low energy consumption and does not require an external power source. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the internal cross-sectional structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the overall external structure of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of the ion combustion body of the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of the bottom impeller air inlet channel of the ion combustion body of the present invention;

[0035] Figure 5 This is a schematic diagram of the internal structure of the combustion chamber and ion-separating teeth of the present invention;

[0036] Figure 6 This is a schematic diagram illustrating the structural principle of the present invention applied to a commercial stove;

[0037] Figure 7 This is a schematic diagram illustrating the structural principle of an existing electronic fuel injection stove applied to commercial stoves.

[0038] In the diagram: 1. Primary combustion chamber; 2. Secondary combustion chamber; 3. Tertiary combustion chamber; 4. Base; 41. Air inlet; 42. Insulation groove; 43. Mounting plate; 44. Oil inlet; 45. Ignition plug mounting hole; 5. Vaporization combustion chamber; 51. Oil circuit; 52. Atomizing combustion mesh; 6. Cyclone air inlet; 61. Air chamber cylinder; 62. Air chamber cover; 63. High-position air outlet; 64. Low-position air outlet; 7. Impeller air inlet channel; 71. Helical teeth; 72. Helical tooth cover plate; 8. Ionization flame distribution teeth; 9. Combustion cylinder; 10. Combustion body mounting box; 11. Oil pump; 111. Oil inlet pipe; 12. Fan; 13. Thermocouple probe; 14. Cookware; 15. Stove basin; 16. Electronic fuel injection stove; 17. Nozzle. Detailed Implementation

[0039] The present invention will be further described below, specifically as follows: A multi-stage split-type energy-saving combustion device for liquid fuels, see [link to relevant documentation]. Figures 1 to 6 The combustion device consists of a combustion chamber 9 and an ion burner. The ion burner comprises a base 4, a vaporization combustion chamber 5, and a cyclone inlet cylinder 6. The vaporization combustion chamber 5 is vertically positioned at the center of the base 4. The top of the vaporization combustion chamber 5 is equipped with ion flame-dispersing teeth 8. The cyclone inlet cylinder 6 is located inside the vaporization combustion chamber 5. A primary combustion chamber 1 is formed between the outer wall of the cyclone inlet cylinder 6 and the vaporization combustion chamber 5. The combustion chamber 9 has an upper ring at the top and a lower ring at the bottom. The bottom of the combustion chamber 9 is connected to the vaporization combustion chamber 5. The upper end of the combustion chamber 5 is fixedly connected. A cavity is left between the lower ring of the combustion chamber 9 and the ion fire-distributing tooth 8 to form a secondary combustion chamber 2. A tertiary combustion chamber 3 is formed between the upper ring of the combustion chamber 9 and the lower ring of the combustion chamber 9. An oil inlet 44 and an ignition plug mounting hole 45 are opened on the side of the ion burner. The oil inlet 44 is connected to the interior of the primary combustion chamber 1. An air inlet 41 and an impeller air intake channel 7 are provided at the bottom of the ion burner. The impeller air intake channel 7 is connected to the interior of the cyclone air intake cylinder 6 through the air inlet 41.

[0040] This invention, through the structural design of the primary combustion chamber 1 of the ion burner, eliminates the need for atomization of liquid fuel entering the primary combustion chamber 1 via the high-pressure atomizing nozzle 17. Only a small amount of liquid fuel needs to be injected into the primary combustion chamber 1, where the cyclone air intake 6 generates a cyclone that disperses, cracks, and vaporizes the liquid fuel, thus meeting the ignition conditions. After ignition, the liquid fuel continues to burn within the primary combustion chamber 1, generating a large amount of high temperature during primary combustion. Simultaneous air intake via the cyclone air intake 6 ensures complete vaporization and combustion of the subsequent liquid fuel. The continuous heat generated within the primary combustion chamber 1 means that liquid combustion and vaporization no longer rely on nozzle atomization but are achieved through sustained high-temperature vaporization. This structural design significantly reduces the amount of fuel and electricity consumed by the combustion device. Furthermore, the flame will not rapidly escape from both sides of the cookware 14 due to rapid gas flow, preventing waste of the heat generated by the fuel.

[0041] This invention forms a secondary combustion chamber 2 within the combustion chamber 9 inside the vaporization combustion chamber 5 by using ion-split flame teeth 8 and the lower ring of the combustion chamber 9. Due to the cyclone air intake method, the flame is relatively chaotic. Through the structural design of the secondary combustion chamber 2, the flame is evenly separated by ion-split flame teeth 8, so that the liquid fuel can burn stably in the secondary combustion chamber 2 and further fully vaporize and burn the liquid fuel. Especially at low flame, the liquid fuel can form a stable blue flame combustion surface on the ion-split flame teeth 8, and the combustion is concentrated by the lower ring of the combustion chamber 9 and enters the tertiary combustion chamber 3.

[0042] Since the oil inlet method of this invention no longer requires high-pressure upward injection, and the vaporization of liquid fuel is concentrated at the bottom, the designed elongated combustion chamber 9 can directly concentrate the heat of the flame to the bottom of the stove. The design of the combustion chamber 9 allows the fuel to be fully burned in the three-stage combustion chamber 3, and concentrates the heat generated by the combustion and fission of the liquid fuel in the combustion chamber 9, thereby concentrating the heating of the bottom of the pot 14. This is more efficient than direct flame heating and greatly improves the heat utilization rate. The combustion of liquid fuel in the three-stage combustion chamber 3 causes the combustion chamber 9 to glow red and heat up. The heat radiation generated is also transferred to the burner 15 to increase the temperature inside the burner 15 and prevent the liquid fuel from cooling down due to localized low temperatures.

[0043] Existing electric fuel injection stoves require a minimum oil flow rate to achieve atomization through their atomizing nozzles. For example, a 0.65mm diameter atomizing nozzle requires a minimum flow rate of 700g / h, making it impossible to activate the low-heat mode. This application, however, fundamentally changes the vaporization combustion method by redesigning the primary combustion chamber 1 of the ion burner. The heat from the primary combustion chamber 1 enables true vaporization of the liquid fuel. When adjusting to a low heat setting, the oil flow rate can be adjusted to 120g / h, allowing vaporization combustion to occur through the temperature within the primary combustion chamber 1.

[0044] Existing electronic fuel-injected stoves 16 require a 120W fan 12 powered by a 220V power supply, resulting in high energy consumption. In contrast, the multi-stage split-type energy-saving combustion device for liquid fuels described in this application fundamentally changes the vaporization combustion method of liquid fuels. It only requires a 12V DC fan 12 with a maximum power of 60W. At low flame, the fan 12 only needs 20W of power, allowing for independent operation with a portable battery. This results in low energy consumption, eliminates the need for an external power source, and makes it suitable for use in catering applications such as hot pot restaurants.

[0045] In a comparative experiment, 5 kg of water was added to each of the two cookware 14 in the experimental and control examples, and the initial water temperature was measured to be 13°C. The experimental and control cookware were simultaneously turned on at maximum heat.

[0046] The control example uses an electric spray stove to heat 5 kg of water from 13°C to 97°C boiling point, which takes 4 minutes, consumes about 150 grams of oil, and has a heat utilization rate of about 22%.

[0047] The experimental example uses the multi-stage split energy-saving combustion device for liquid fuel of the present invention for heating, which takes 2 minutes and 40 seconds, consumes about 85 grams of oil, and achieves a heat utilization rate of about 45%.

[0048] Compared to existing electric fuel injection stoves, the fuel consumption of this invention is nearly half that of existing electric fuel injection stoves, and the heat utilization rate is almost doubled. Moreover, it only requires a 12V power supply, compared to the 220V power supply of existing electric fuel injection stoves. It consumes less electricity, has lower energy consumption, and is safer to use. It can be powered by a rechargeable battery and does not require an external power cord, making it convenient to use the stove in outdoor areas without power, greatly expanding its usability.

[0049] Liquid fuel is burned in each stage of the combustion chamber of the combustion device, resulting in a relatively high overall temperature. Considering its installation and use, a combustion body mounting box 10 is designed. The combustion body mounting box 10 is a hollow cavity structure. The ion combustion body is installed on the upper surface of the combustion body mounting box 10. The impeller air inlet channel 7 of the ion combustion body is located inside the combustion body mounting box 10. The side of the combustion body mounting box 10 is provided with a fan 12 air inlet 41 and an oil inlet 44. The combustion body mounting box 10 serves as an air chamber. The fan 12 blows air into the combustion body mounting box 10, which then spirals into the ion combustion body through the impeller air inlet channel 7, realizing the spiral jet of the cyclone air inlet 6. While blowing air, the fan 12 can also dissipate heat from the bottom of the ion combustion body, preventing the combustion body mounting box 10 from overheating and burning the user. It also provides good protection for the wiring and pipelines. The wiring and oil pipes can pass through the combustion body mounting box 10 and connect to the ion combustion body.

[0050] It also includes a blower 12 and an oil pump 11. The blower 12 is connected to the blower 12 air inlet 41 of the combustor mounting box 10 and supplies air to the ion combustor through the blower 12. The oil pump 11 is connected to the oil inlet 44 of the ion combustor through the oil inlet pipe 111 and inputs liquid fuel into the ion combustor through the oil pump 11.

[0051] To further improve the vaporization effect of liquid fuel, the present invention provides an annular oil passage 51 on the inner wall of the vaporization combustion cylinder 5, and a ring of atomizing combustion mesh 52 is welded on the oil passage 51. The liquid fuel is transported into the annular oil passage 51 through the oil inlet pipe 111 and dispersed in an annular shape, which is more conducive to contact with the air ejected from the cyclone air inlet 6 and dispersed on the atomizing combustion mesh 52, thereby improving the atomization effect during ignition. When the primary combustion chamber 1 is continuously burning, the liquid fuel on the primary atomizing combustion mesh 52 in the oil passage 51 is also more easily vaporized.

[0052] The side of the ion burner is provided with an oil inlet 44 and an ignition plug mounting hole 45. The ignition plug mounting hole 45 is used to install the ignition piston for ignition operation. Both the oil inlet 44 and the ignition plug mounting hole 45 are connected to the oil passage 51. The oil inlet 44 is set along the tangent direction of the vaporization combustion chamber 5 so that the input liquid fuel is better distributed along the annular oil passage 51.

[0053] The base 4 is surrounded by annular mounting plates 43. These plates have positioning mounting holes and thermocouple probe 13 mounting holes. The base 4 is fixed to the upper surface of the burner mounting box 10 by positioning screws that match the positioning mounting holes. The base also includes a combustion thermocouple probe 13, which is vertically mounted on the ion burner and located near the combustion chamber 9. The annular mounting plates 43 around the base 4 provide space for the installation of the thermocouple probe 13. The thermocouple probe 13 does not need to be placed inside the combustion chamber. Monitoring by the combustion chamber 9 indicates that the ion burner has extinguished when the temperature is very low and a large amount of fuel is still entering, requiring flameout protection.

[0054] Since the continuous combustion in the primary combustion chamber 1 generates a large amount of heat, in order to prevent the vaporization combustion tube 5 from directly transferring its heat to the combustion body mounting box 10 around the base 4, a heat insulation groove 42 is left between the outer wall of the vaporization combustion tube 5 and the base 4 to reduce its heat transfer.

[0055] The lower ring of the combustion chamber 9 is an annular cover-shaped body. The lower ring of the combustion chamber 9 is located inside the combustion chamber 9 and welded to the lower part of the combustion chamber 9, forming a secondary combustion chamber 2 between it and the ion-dispersing flame tooth 8, so as to realize the stable vaporization and combustion of liquid fuel. A flame-gathering hole is opened in the middle of the lower ring of the combustion chamber 9, which gathers the burning liquid fuel through the flame-gathering hole, so that it burns along the length of the combustion chamber 9. The upper ring of the combustion chamber 9 is annular and welded to the upper end face of the combustion chamber 9. The upper ring of the combustion chamber 9 plays a heat-gathering role at the top of the combustion chamber 9, so as to better heat the pot 14.

[0056] By designing the casting structure, the base 4, vaporization combustion cylinder 5, impeller air inlet channel 7, and cyclone air inlet cylinder 6 are integrally precision cast, greatly increasing the structural connection stability and sealing. The entire ion combustion body only has the flame outlet on the top of the vaporization combustion cylinder 5 and the air inlet 41 of the impeller air inlet channel 7 at the bottom of the base 4. There is no need to worry about liquid fuel leakage. After the combustion device is shut down, the residual liquid fuel will only flow into the primary combustion chamber 1 after condensation, and there will be no external leakage. When ignited again, it can directly vaporize and burn, which greatly improves the safety of the equipment.

[0057] This invention achieves rotary air intake through the impeller air intake channel 7, and the cyclone air intake cylinder 6 uses lateral jetting, enabling the air to be rotary-jet-driven within the primary combustion chamber 1, which is beneficial for the dispersion and atomization of liquid fuel. To realize the above-mentioned air intake method, the cyclone air intake cylinder 6 has been structurally designed.

[0058] The cyclone air inlet 6 is composed of an air chamber 61 and an air chamber cover 62. The air chamber cover 62 is welded to the upper end of the air chamber 61. The lower end of the air chamber 61 is fixed to the base 4. The bottom of the base 4 is provided with an air inlet 41 that communicates with the inside of the air chamber 61. Several air outlets are vertically provided around the air chamber 61.

[0059] To improve airflow efficiency and ensure complete vaporization and combustion of the liquid fuel in both the upper and lower parts of the primary combustion chamber 1, the air outlets are divided into two types: a high-position air outlet 63 and a low-position air outlet 64. The high-position air outlet 63 and the low-position air outlet 64 are arranged alternately. The high-position air outlet 63 is located at the upper part of the air chamber cylinder 61, and the low-position air outlet 64 extends from the upper part of the air chamber cylinder 61 to the lower part of the air chamber cylinder 61. The high-position air outlet 63 ensures that the liquid fuel in the upper part of the primary combustion chamber 1 is in full contact with the air, improving its vaporization and combustion effect and preventing a large amount of unvaporized liquid fuel from entering the secondary combustion chamber 2.

[0060] To achieve rotary air intake, the impeller air intake channel 7 was designed. The impeller air intake channel 7 consists of helical teeth 71 and helical tooth cover plates 72. There are several helical teeth 71, which are evenly distributed along the circumference of the air inlet 41 at the bottom of the base 4. The helical tooth cover plates 72 are welded to the helical teeth 71. After the helical tooth cover plates 72 are installed, when the fan 12 is turned on, air can only enter from the gaps between the helical teeth 71 and enter the cyclone air intake channel 6 in a spiral shape, thus realizing helical cyclone jet.

[0061] The multi-stage split-type energy-saving combustion device of this invention can be designed with corresponding models according to the application environment to meet the needs of various working environments. For example, a 100,000 kcal multi-stage split-type energy-saving combustion device can be used in steam generators in food processing plants. A 50,000 kcal multi-stage split-type energy-saving combustion device can be used in small steam generators in food processing plants. A 25,000 kcal multi-stage split-type energy-saving combustion device can be used in the field of commercial stoves. A 15,000 kcal multi-stage split-type energy-saving combustion device can be used in steam cabinets, rice cookers, and other fields. A 5,000 kcal multi-stage split-type energy-saving combustion device can be used in the fields of clay pot rice, hot pot, and household stoves.

[0062] The above provides a detailed description of a multi-stage split-type energy-saving combustion device for liquid fuels provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Modifications and improvements to the present invention are possible without exceeding the concept and scope specified in the appended claims. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A multi-stage split-type energy-saving combustion device for liquid fuels, characterized in that: The combustion device consists of a combustion cylinder and an ion burner. The ion burner comprises a base, a vaporization combustion cylinder, and a cyclone intake cylinder. The vaporization combustion cylinder is vertically positioned at the center of the base. The top of the vaporization combustion cylinder has ion-distributing teeth. The cyclone intake cylinder is located inside the vaporization combustion cylinder, and a primary combustion chamber is formed between the outer wall of the cyclone intake cylinder and the vaporization combustion cylinder. The top of the combustion cylinder has an upper ring, and the bottom has a lower ring. The bottom of the combustion cylinder is fixedly connected to the upper end of the vaporization combustion cylinder. A cavity is left between the lower ring and the ion-distributing teeth to form a secondary combustion chamber. A tertiary combustion chamber is formed between the upper and lower rings. The side of the ion burner has an oil inlet and an ignition plug mounting hole. The oil inlet communicates with the interior of the primary combustion chamber. The bottom of the ion burner has an air inlet and an impeller air intake channel. The impeller air intake channel communicates with the interior of the cyclone intake cylinder through the air inlet.

2. The multi-stage split-type energy-saving combustion device for liquid fuel according to claim 1, characterized in that: It also includes a combustor mounting box, which is a hollow cavity structure. The ion combustor is mounted on the upper surface of the combustor mounting box. The impeller air inlet channel of the ion combustor is located inside the combustor mounting box. The side of the combustor mounting box is provided with a fan air inlet and an oil inlet.

3. A multi-stage split-type energy-saving combustion device for liquid fuel according to claim 2, characterized in that: It also includes a blower and an oil pump, wherein the blower is connected to the blower inlet of the combustor mounting box, and the oil pump is connected to the ion combustor through an oil inlet pipe.

4. A multi-stage split-type energy-saving combustion device for liquid fuel according to claim 1, characterized in that: A ring-shaped oil passage is formed on the inner wall of the vaporization combustion cylinder, and an atomizing combustion mesh is welded onto the oil passage.

5. A multi-stage split-type energy-saving combustion device for liquid fuel according to claim 4, characterized in that: The side of the ion burner is provided with an oil inlet and an ignition plug mounting hole, both of which are connected to the oil circuit. The oil inlet is arranged along the tangential direction of the vaporization combustion cylinder.

6. A multi-stage split-type energy-saving combustion device for liquid fuel according to claim 1, characterized in that: The lower ring of the combustion chamber is an annular cover-shaped body. The lower ring of the combustion chamber is located inside the combustion chamber and welded to the lower part of the combustion chamber. A fire-gathering hole is opened in the middle of the lower ring of the combustion chamber. The upper ring of the combustion chamber is annular and welded to the upper end face of the combustion chamber.

7. A multi-stage split-type energy-saving combustion device for liquid fuel according to claim 1, characterized in that: It also includes a combustion thermocouple probe, which is vertically mounted on the ion burner and located near the combustion cylinder.

8. A multi-stage split-type energy-saving combustion device for liquid fuel according to claim 1, characterized in that: The combustion chamber is a long cylindrical shape, with its upper end extending to the bottom of the stove.

9. A multi-stage split-type energy-saving combustion device for liquid fuel according to claim 1, characterized in that: A heat-insulating groove is left between the outer wall of the vaporization combustion cylinder and the base.

10. A multi-stage split-type energy-saving combustion device for liquid fuel according to claim 1, characterized in that: The base, vaporization combustion cylinder, impeller air intake channel, and cyclone air intake cylinder are integrally precision cast.

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