Multi-stage mute energy-saving combustion device

Abstract

The utility model discloses a multi-stage silent energy-saving combustion device, the combustion device is composed of an ion combustion body and a silencing combustion cylinder, the silencing combustion cylinder is fixed on a fire outlet of the ion combustion body, a ceramic silencing pipe is arranged in the silencing combustion cylinder, the ceramic silencing pipe is made of porous ceramic, and the ceramic silencing pipe is made of a ceramic material. A plurality of silencing teeth are arranged on the inner wall of a pipe hole of the ceramic silencing pipe, all the silencing teeth are arranged in the length direction of the ceramic silencing pipe and evenly distributed at intervals in the circumferential direction of the pipe hole, and compared with the prior art, the silencing combustion cylinder has the advantages that by means of the structural design of the silencing combustion cylinder, the silencing and noise reduction problems of the liquid fuel stove are solved in a breakthrough mode, and the silencing combustion cylinder is simple in structure and convenient to use. Compared with a multi-stage combustion device of a first-generation product, the multi-stage combustion device has the advantages that a combustion system is changed, liquid fuel is combusted more sufficiently, the heat utilization rate is increased, oil consumption is further reduced, noise in the combustion process is very low, the overall height is further reduced, and installation and design of small kitchen ranges such as household stoves are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of liquid fuel stoves, in particular to a multi-stage silent energy-saving combustion device. Background Art

[0002] In the vast commercial stove market, most of them use liquefied gas fuel, such as gas cylinders, which are widely used in schools, troops, restaurants, hotels and other multi-person stove occasions. This traditional liquefied gas has problems such as low calorific value, high cost, low flash point, flammability and explosion, and great safety risks. Due to the great safety risks of liquefied gas fuel, the state's supervision is becoming more and more strict, and non-residential users are prohibited from using liquefied petroleum gas. As a result, commercial stove fuels have begun to turn to safe fuels with relatively high flash points---liquid fuels (coal-based liquid fuels). Among them, coal-based liquid fuel for kitchen stoves is a non-toxic, harmless, high-flash-point, liquid clean fuel for kitchen stoves, which is made of Fischer-Tropsch synthesis hydrocarbons, industrial white oil, high-flash-point hydrocarbon compounds, etc., compounded with high-molecular oxygen-containing compounds and additives. It is made of alkane as the main component. The main advantages of this fuel oil are wide application, low price, high calorific value, good safety and clean and environmentally friendly.

[0003] At present, liquid fuel stoves are mainly electric fuel stoves in terms of fuel supply. They are mainly used in a series of commercial high-fire stoves, Chinese stir-fry stoves, and large pot stoves. They are also used in other kitchen stoves such as steamers, stew barrels, cooking stoves, clay pot stoves, and heaters. A pulse oil pump is used to vaporize the fuel. The combustion method of the electric fuel stove must first pressurize the liquid fuel to 12 kg to ensure that the liquid fuel sprayed from the atomizing nozzle is in a mist form. The misted liquid fuel can be mixed with the air injected by the fan in the wind cavity of the stove to burn, and then a 20,000-volt voltage is generated through the ignition needle to ignite the mixed gas, realizing primary combustion in the wind cavity of the stove, and then released into the stove basin after passing through the fire ring for secondary full combustion to achieve heating of the pot.

[0004] Electric fuel injection cookers belong to the development combustion system, which requires liquid fuel to be pressurized to achieve atomization and then sprayed into the stove basin. The combustion part is in the stove basin. Since 12 kg of pressure is required to ensure atomization, it can only be burned and heated in medium and high fire mode, and it is impossible to use a small fire for slow heating. It is often seen that many commercial stoves use high heat and the flame sprays out from the side of the pot. At this time, a lot of fuel does not have time to heat the bottom of the pot, and it is sprayed out from the exhaust ports on both sides of the stove basin. As a result, the thermal utilization rate of the electric fuel injection stoves on the market is very low, and the fuel is sprayed too fast to be fully burned. Therefore, the sprayed flame carries sparks, and the sparks are C atoms that are not completely burned. The thermal utilization rate of electric fuel injection cookers is mostly around 22%.

[0005] Therefore, our company developed the first generation of liquid fuel stoves, see CN202410224133.0 The invention discloses a multi-stage silent energy-saving combustion device. The product changes the atomization combustion mode of the original electric fuel injection stove essentially through the structural design of the ion combustion body, and changes the original open combustion mode of the electric fuel injection stove into a closed multi-stage combustion mode, and does not need to be atomized by a high-pressure atomizing nozzle. The temperature generated by the primary combustion in the first-stage combustion chamber in the ion combustion body is used in combination with the air intake of the cyclone air intake cylinder to realize the real high-temperature vaporization of the liquid fuel and the precise mixing of the air and fuel ratio. The liquid fuel is stably burned and fully vaporized in the second-stage combustion chamber between the ion combustion body, the lower ring of the combustion tube and the ion fire dividing teeth, and is fully burned and heated in the third-stage combustion chamber in the combustion tube, so that the liquid fuel is fully burned. The combustion device is no longer directly heated by flame, but the fuel is heated by heat radiation after full combustion. Compared with direct flame heating, the heating effect is better, the heat utilization rate is greatly improved, and the heat energy loss is greatly reduced. Compared with the electric fuel injection stove, the heat utilization rate is nearly doubled, and the energy consumption such as the amount of oil and electricity is only half of the original. In addition, the device has higher safety, good independence and wide applicability. In addition, when performing slow combustion in low-fire mode, the liquid fuel can stably fission and burn on the ion spark divider teeth in the secondary combustion chamber, continuously generating stable heat.

[0006] However, this technology still has the following shortcomings:

[0007] 1. Regardless of the first generation of liquid fuel stoves developed by our company or the existing electric fuel injection stoves, liquid fuel is injected by pressurization and blown into the air by a fan to assist combustion. However, since the stove bodies of household stoves and commercial stoves are open, it is impossible to set a silencer at the air outlet. Therefore, when used on household stoves and commercial stoves, the noise is unavoidable. When the existing electric fuel injection stoves burn at high fire, the noise is mostly more than 85 decibels. The first generation of liquid fuel stoves developed by our company has greatly reduced oil supply pressure and air volume, and its noise decibel is only 70 decibels. If the noise problem can be solved, it will greatly promote the application and promotion of liquid fuel stoves, especially household stoves and other places that require a quiet working environment.

[0008] 2. The long cylindrical design of the combustion tube is designed for commercial stoves with stove basins. First, in order to ensure that the liquid fuel burns and generates heat in the combustion tube, the combustion tube needs to be of a certain length to provide combustion space; second, the combustion tube is placed in the stove basin, which can be directly aimed at the bottom of the pot for heat energy heating, and the burning tube can release heat directly into the stove basin around it after it is red. The disadvantage is that the combustion tube is too long, and household stoves usually only have an open burner structure, without a stove basin structure. The combustion tube is too long and is in a red-hot state, so it is not conducive to the installation design of household stoves, and is only suitable for stoves with a deeper stove basin structure or closed stoves. Summary of the invention

[0009] The purpose of the utility model is to provide a multi-stage silent energy-saving combustion device which solves the above-mentioned problems and has higher thermal utilization rate, faster heating and lower noise than the first-generation products.

[0010] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a multi-stage silent and energy-saving combustion device, the combustion device is composed of an ion combustion body and a silencer combustion tube, the caliber of the silencer combustion tube is the same as the caliber of the fire outlet of the ion combustion body, and is fixed on the fire outlet of the ion combustion body, and a ceramic silencer tube is arranged in the silencer combustion tube, the ceramic silencer tube adopts porous ceramics, and a plurality of silencer teeth are opened on the inner wall of the tube hole of the ceramic silencer tube, and the silencer teeth are arranged along the length direction of the ceramic silencer tube, and are evenly spaced along the circumferential direction of the tube hole.

[0011] Preferably, the silencer combustion tube is composed of an upper furnace ring and a lower straight tube, the furnace ring is disc-shaped, the straight tube is tubular, and the diameter of the furnace ring is larger than the outer diameter of the straight tube.

[0012] Preferably, the outer diameter of the ceramic silencer pipe matches the inner diameter of the silencer combustion tube, and the ceramic silencer pipe consists of an upper silencer tube and a lower silencer tube, and the upper silencer tube and the lower silencer tube of the ceramic silencer pipe are integrally formed.

[0013] Preferably, the tube hole of the upper silencer is narrow at the bottom and wide at the top, and the diameter of the tube hole of the lower silencer is the same as the diameter of the lower end of the upper silencer.

[0014] Preferably, a fire dividing plate is provided on the top of the silencer combustion tube.

[0015] Preferably, the ion combustion body is mainly composed of a base, an air inlet is opened at the center of the base, and a cyclone air inlet cylinder and a vaporization combustion cylinder are provided on the top surface of the base from the inside to the outside in sequence. The bottom surface of the base is provided with an impeller air inlet mechanism, and the impeller air inlet mechanism is internally connected with the cyclone air inlet cylinder through the air inlet. A number of air outlets are vertically opened around the cyclone air inlet cylinder, and a primary combustion chamber is formed between the outer wall of the cyclone air inlet cylinder and the vaporization combustion cylinder. An oil inlet and an ignition plug mounting hole are opened on the side of the ion combustion body, and the oil inlet is connected to the inside of the primary combustion chamber. The lower end of the silencer combustion cylinder is fixed to the upper end of the vaporization combustion cylinder.

[0016] Preferably, a circle of annular vaporization combustion net is fixedly provided on the inner wall of the vaporization combustion cylinder, and an annular limiting protrusion for limiting the vaporization combustion net is provided on the top surface of the base.

[0017] Preferably, it further comprises an oil pump and an ignition plug, wherein the ignition plug is installed in the ignition plug installation hole, the oil pump is connected to the oil inlet on the ion combustion body through an oil inlet pipe, and the oil inlet is opened along the tangent direction of the vaporization combustion cylinder.

[0018] Preferably, it also includes a combustion body mounting box, which is a hollow cavity structure. The ion combustion body is installed on the upper surface of the combustion body mounting box. The impeller air intake mechanism of the ion combustion body is located in the combustion body mounting box. A fan is provided at the bottom of the combustion body mounting box, and the air outlet of the fan is connected to the inside of the combustion body mounting box.

[0019] Preferably, a thermocouple probe is further included, which is vertically mounted on the cyclone air inlet cylinder, and the upper end of the thermocouple probe passes through the cyclone air inlet cylinder and is located at the lower part of the ceramic muffler.

[0020] Compared with the prior art, the advantages of the utility model are:

[0021] (1) A silencer combustion tube is designed on the ion combustion body, and a ceramic silencer tube is designed inside the silencer combustion tube. Compared with the first generation product, the combustion system of the liquid fuel has changed. After the ceramic silencer tube is installed in the utility model, a vortex hot air field is formed at the lower part of the ceramic silencer tube as a secondary combustion chamber, and a hot air field is formed at the upper part of the ceramic silencer tube as a tertiary combustion chamber. When the liquid fuel is vaporized and burned in the primary combustion chamber, the burning flame spirals up from the top of the ion combustion body and enters the secondary combustion chamber for full combustion. In the tertiary combustion chamber, heat is released in a concentrated manner and converted into thermal energy, which is ejected from the top of the silencer combustion tube to heat the cookware. The thermal utilization rate of the entire combustion device is improved, and fuel consumption is further reduced.

[0022] (2) The ceramic silencer completely solves the noise problem of liquid fuel stoves. Through testing, when this generation of products is turned on at a low fire, there is basically no sound and it is in a silent state. When the maximum air volume and oil intake are turned on, the noise is only more than 60 decibels, which is far lower than the standard of 85 decibels for liquid fuel stoves. This is a breakthrough solution to the problem of silencing and noise reduction of liquid fuel stoves that has existed for many years.

[0023] (3) The silencer combustion tube designed by the utility model reduces the outer wall temperature of the three-stage combustion chamber of the silencer combustion tube to 600-700°C through the heat-collecting and heat-insulating effect inside the ceramic silencer tube. The requirement can be met by using 401 iron-chromium-aluminum stainless iron material, which greatly reduces the material cost and reduces the heat energy released from the outer wall of the silencer combustion tube to the furnace basin. Therefore, even if the overall height of the silencer combustion tube is shortened, the heat released from the outer wall of the silencer combustion tube will not cause damage to the furnace basin due to high-temperature baking.

[0024] (4) Due to the design of the silencer combustion tube and the ceramic silencer tube, the combustion system has been greatly shortened and the heat utilization rate has been improved. The height of the silencer combustion tube is much shorter than the original long cylindrical combustion tube, which greatly reduces the overall height of the combustion device and reduces the restrictions on the size of the stove basin and the height of the stove body, which is more conducive to the installation design of small stoves such as household stoves.

[0025] (5) The utility model has essentially changed the atomization combustion mode of the original electric fuel injection stove through the structural design of the ion combustion body, and changed the original open combustion mode of the electric fuel injection stove into a closed multi-stage combustion mode, and there is no need for atomization through a high-pressure atomizing nozzle. The temperature generated by the primary combustion in the first-stage combustion chamber is used in conjunction with the air intake of the cyclone air intake cylinder to achieve true high-temperature vaporization of the liquid fuel, and stable combustion and full vaporization in the second-stage combustion chamber, and full combustion and heat generation in the third-stage combustion chamber. The generated heat will not rush out quickly from the two sides of the cookware, which greatly reduces the heat energy loss. Compared with the electric fuel injection stove, the heat utilization rate is increased by nearly one-fold, and the energy consumption such as oil and electricity is only half of the original. In addition, the utility model has higher safety, good independence, and wide applicability.

[0026] (6) The utility model has essentially changed the vaporization combustion mode of liquid fuel. It only needs to use a 12V DC fan with a maximum power of 60W. When the fire is low, the fan's working power is only 20W. It can be used independently with a mobile battery. It has low energy consumption and does not require an external power cord. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the ceramic muffler pipe of the utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the ion combustion body of the utility model;

[0031] Figure 5 The utility model is a schematic diagram of the installation structure in the stove basin of a commercial stove.

[0032] In the figure: 1. Silenced combustion tube; 11. Furnace ring; 12. Straight tube; 2. Ion combustion body; 21. Base; 22. Vaporization combustion tube; 23. Cyclone air inlet tube; 24. Impeller air inlet mechanism; 25. Oil inlet; 3. Combustion body installation box; 4. Oil pump; 5. Fan; 6. Fire distributor; 7. Ceramic silencer; 71. Upper silencer; 72. Lower silencer; 8. Vaporization combustion net; 9. Thermocouple probe; 10. Furnace basin. DETAILED DESCRIPTION

[0033] The utility model will be further described below: A multi-stage silent energy-saving combustion device for liquid fuel, see Figures 1 to 5 The combustion device is composed of an ion combustion body 2 and a muffler combustion tube 1.

[0034] The ion combustion body 2 is mainly composed of a base 21, on the top surface of the base 21 are arranged from the inside to the outside in sequence a cyclone air inlet cylinder 23 and a vaporization combustion cylinder 22, a primary combustion chamber is formed between the cyclone air inlet cylinder 23 and the vaporization combustion cylinder 22, an air inlet is opened at the center of the base 21, the air inlet is located in the cyclone air inlet cylinder 23, the bottom surface of the base 21 is provided with an impeller air inlet mechanism 24, the impeller air inlet mechanism 24 is connected with the interior of the cyclone air inlet cylinder 23 through the air inlet, a plurality of air outlets are vertically opened around the side walls of the cyclone air inlet cylinder 23, an oil inlet 25 and an ignition plug mounting hole are provided on the side of the ion combustion body 2, the oil inlet 25 is connected with the interior of the primary combustion chamber. Through the structural design of the first-level combustion chamber of the ion combustion body 2, the liquid fuel entering the first-level combustion chamber does not need to be atomized by the high-pressure atomizing nozzle. The cyclone blown out by the cyclone air inlet cylinder 23 can achieve the dispersion and cracking of the liquid fuel and fill the entire first-level combustion chamber for ignition and combustion. After increasing the amount of oil intake, the high temperature generated by the primary ignition combustion can achieve full vaporization and combustion of the liquid fuel. The combustion can continue to generate high temperature. The liquid fuel is continuously vaporized by high temperature, so that the vaporization conditions of the liquid combustion of the utility model no longer rely on the nozzle atomization. Moreover, compared with the atomization method of the nozzle, the vaporization method of the utility model is a real high-temperature vaporization, and its liquid fuel molecules are smaller, more evenly distributed, and easier to burn. Compared with the electric fuel injection gas stove, the oil intake, power consumption, and ventilation volume of the utility model are greatly reduced, and the thermal efficiency is also higher.

[0035] The first generation of products mainly provide a sufficient closed combustion space for the combustion of liquid fuel through a long cylindrical combustion tube, but require sufficient installation height between the stove and the pot, which will increase the depth of the stove basin 10 and the overall height of the stove body, affecting the design of various stove bodies for different purposes, and cannot be silenced.

[0036] In order to enable liquid fuel to be fully burned and silenced, the utility model designs a silencer combustion tube 1, the lower end of the silencer combustion tube 1 is fixed to the upper end of the vaporization combustion tube 22, the lower part of the silencer combustion tube 1 is a secondary combustion chamber, and the upper part is a tertiary combustion chamber, the ceramic silencer tube 7 is composed of an upper silencer 71 and a lower silencer 72, the upper silencer 71 is located in the tertiary combustion chamber, and the lower silencer 72 is located in the secondary combustion chamber.

[0037] Since the ion combustion body 2 adopts a spiral air intake method, the liquid fuel is gasified by the cyclone, so the flame ejected from the ion combustion body 2 flows with the gas, and is also cyclone-shaped. When the cyclone-shaped flame enters the secondary combustion chamber, the rotation force will gradually slow down, and the gas will be silenced during the rotation. At the same time, the incompletely burned liquid fuel gas will be completely burned, and the generated heat energy will vertically enter the tertiary combustion chamber for further silencing and noise reduction and release heat upwards. The tertiary combustion chamber can further prevent the liquid fuel from being incompletely burned.

[0038] The utility model is provided with a ceramic muffler tube 7 in the muffler combustion tube 1, see Figure 3 In terms of material selection, through experimental tests, the ceramic silencer tube 7 is made of porous mullite ceramics. The porous mullite ceramics have the characteristics of high porosity, low density, high temperature resistance, and high mechanical strength. Through its porous and breathable physical structure, it can well eliminate the noise generated during the gas circulation process of the utility model, and has a good silencing and noise reduction effect. In the structural design of the ceramic silencer tube 7, a number of silencer teeth are opened on the inner wall of the tube hole of the ceramic silencer tube 7. The silencer teeth form a wavy undulating structure in the tube hole. When the liquid fuel is vaporized and burned in the primary combustion chamber, the burning flame spirally rises from the top of the ion combustion body 2. A part of the rotating flame enters the pores in the ceramic silencer tube 7 for silencing and noise reduction. A part of the rotating flame enters the tube hole of the ceramic silencer tube 7, and further silencing and noise reduction is performed through the undulating silencer teeth, and fully burns and generates heat. The heat generated is converted into vertically upward heat and ejected from the upper part of the ceramic silencer tube 7. Its silencer The tooth design can also play the role of guiding the wind in the vertical direction. The rising spiral gas will gradually become silent and slow down, and finally burn completely and convert into heat energy, and spray out from the top of the silencer combustion tube 1 in the vertical direction. The design of the ceramic silencer tube 7 completely solves the noise problem of the liquid fuel stove. Through testing, when this generation of products is turned on with a low fire, basically no sound can be heard and it is in a silent state. When the maximum air volume and oil intake are turned on, the noise is only more than 60 decibels, which is far lower than the standard of liquid fuel stoves below 85 decibels. It has solved the problem of silencing and noise reduction of liquid fuel stoves for many years.

[0039] In addition, the installation design of the porous ceramic ceramic silencer tube 7, in addition to achieving the effect of silencing and reducing noise, has the following unexpected effects on the liquid fuel stove:

[0040] 1. Due to the installation of the ceramic silencer 7, the combustion and heat flow mode of the liquid fuel have also changed compared with the first generation of products. When the liquid fuel burns in the first-stage combustion chamber, since the cavity of the first-stage combustion chamber is not very large and the temperature in the cavity is about 600°C, it cannot be completely and fully burned during the liquid vaporization combustion process. A large amount of C0, combustible gas and oil vapor will be generated in the first-stage combustion chamber and enter the second-stage combustion chamber with the blown cyclone. After the ceramic silencer 7 is installed, after the spiral gas enters the lower silencer 72, the incompletely burned liquid fuel and oil vapor will gather at the lower part of the ceramic silencer 7 due to the obstruction of the ceramic silencer 7, and a vortex hot air field with heat gathering effect will be formed at the lower part. The gathering temperature of the hot air field is to The temperature of the part is much higher than that when the ceramic silencer tube 7 is not installed. The high-temperature infrared field in the hot air field plays a heat gathering role, so that the fuel entering later can be quickly and fully burned, greatly improving the heat utilization rate, so that the CO, combustible gas and oil vapor coming out of the first-level combustion chamber are completely burned in the hot air field, and the second-level combustion is realized. The temperature of the second-level combustion chamber reaches about 800°C. Since the gas is fully burned in the vortex hot air field, the heat generated by its combustion will be released in the third-level combustion chamber. Therefore, a second heat field will be formed in the third-level combustion chamber, and its temperature can reach about 1300°C, which can reheat the fuel to ensure its complete combustion, and release the heat energy outward at the same time, and heat the pot by the high-temperature heat energy released by the combustion. Through the structural design of the utility model, the fire outlet on the third-level combustion chamber is almost invisible, because the flame of the liquid fuel combustion is completely converted into heat energy, and the pot is heated by heat radiation. Compared with the first generation product, due to the design of the ceramic silencer 7, its combustion system has changed, the thermal utilization rate of the entire combustion device has been improved, and the fuel consumption has been further reduced.

[0041] 2. Since the utility model performs high-temperature oxygen-rich combustion in the muffler combustion tube 1, the internal temperature is very high. When the ceramic muffler tube 7 is not inserted, the temperature of the outer wall of the three-stage combustion chamber of the muffler combustion tube 1 is about 1200°C. The muffler combustion tube 1 can only use high-temperature resistant 310S austenitic chromium-nickel stainless steel material. This stainless steel material has good high-temperature resistance and oxidation resistance, but the price is relatively high. However, after the ceramic muffler tube 7 is installed, since the ceramic material has a good internal heat collection and external heat insulation effect, the heat energy is concentrated in the ceramic muffler tube 7, which can further improve the heat utilization rate, and the temperature of the outer wall of the three-stage combustion chamber of the muffler combustion tube 1 drops to 600-700°C, that is, the use of 401 iron-chromium-aluminum stainless iron material can meet the requirements, which greatly reduces the material cost, and at the same time reduces the heat energy released from the outer wall of the muffler combustion tube 1 to the furnace basin 10, and it is no longer necessary to heat the air in the furnace basin 10 through the long cylindrical combustion tube to the outside like the first generation product. In addition, since the furnace basin 10 is mostly made of cast iron, if the silencer combustion tube 1 is shortened, the three-stage combustion chamber will be close to the bottom of the furnace basin 10. If the outer wall of the silencer combustion tube 1 is still at a high temperature of 1200°C, the bottom of the furnace basin 10 will be damaged due to long-term high-temperature baking. After placing the ceramic silencer tube 7 of the utility model, the temperature of its outer wall is reduced, which greatly extends the service life of the furnace basin 10.

[0042] 3. Due to the addition of the ceramic silencer tube 7, the combustion system has been greatly shortened, the heat utilization rate has been improved, and the height of the silencer combustion tube 1 is much shorter than the original long cylindrical combustion tube, which greatly reduces the overall height of the combustion device, reduces the restrictions on the size of the stove basin 10 and the height of the stove body, and is more conducive to the installation design of small stoves such as household stoves.

[0043] Since the liquid fuel of the utility model burns too fully, there is no open flame at the fire outlet, and the sound is very small after silencing and noise reduction. When used on specific gas stoves, such as clay pot rice stoves and hot pot stoves, consumers hope to see open flames to create an atmosphere. At the same time, the open flames also play a certain warning role. Before such products leave the factory, they need to adjust the oil intake and air intake ratio by setting, increase the blast volume, and speed up the blowing of gas to reduce the combustion efficiency. A small amount of flame blows out from the top of the combustion device. Moreover, some large commercial stoves and open kitchen restaurants do not need to adjust the oil intake and air intake ratio, which can provide a quiet dining environment.

[0044] Comparative experiment: The electric fuel injection gas stove and the first generation product were used as control examples to conduct a comparative test with the experimental example of the utility model. 5 kg of water was added to the three pots respectively, and the initial water temperature was measured to be 13°. The experimental example and the control example were turned on at the maximum fire at the same time.

[0045] Comparative example - existing electric fuel injection gas stove: using liquid fuel electric fuel injection stove to heat 5 kg of water from 13° to 97° boiling, it takes 4 minutes, the fuel consumption is about 150 grams, and the heat utilization rate is about 22%;

[0046] Comparative example - first generation product: adopts multi-stage split energy-saving combustion device for heating, which takes 2 minutes and 40 seconds, consumes about 85 grams of fuel, and the heat utilization rate can reach about 45%.

[0047] Experimental Example - The utility model: adopts the second generation of multi-stage silent energy-saving combustion device for heating, which takes 2 minutes and 220 seconds, consumes about 75 grams of fuel, and the heat utilization rate can reach about 50%.

[0048] When the utility model and the existing electric fuel injection gas stove have the same oil supply, it is difficult to find flames when the utility model with a ceramic silencer is working, because the liquid fuel has been completely burned in the silencer combustion tube, and what is sprayed out is heat energy in the form of heat, while the combustion stove of the existing electric fuel injection gas stove has a very high flame spray height and is accompanied by sparks, which are incompletely burned carbon atoms.

[0049] As a preferred solution, the muffler teeth are arranged along the length direction of the ceramic muffler tube 7, and are evenly spaced along the circumferential direction of the tube hole, so that the muffler teeth form an undulating wave shape in the circumferential direction, which is more conducive to the muffler and noise reduction of the spiral flame. The heat after the muffler and noise reduction is discharged upward along the vertical direction of the muffler teeth. The tube hole of the upper muffler 71 is a gradually expanding shape with a narrow bottom and a wide top, which can realize the heat energy to be blown out upward, which is conducive to heating the bottom of the pot. The tube hole diameter of the lower muffler 72 is the same as the lower end hole diameter of the upper muffler 71 to facilitate the transition.

[0050] The upper silencer tube 71 and the lower silencer tube 72 of the ceramic silencer tube 7 are integrally formed, and the outer diameter of the ceramic silencer tube 7 matches the inner diameter of the silencer combustion tube 1. The integrally formed structural design allows the ceramic silencer tube 7 to be processed and formed in one step, and the installation is also very convenient. After fixing the silencer combustion tube 1, the ceramic silencer tube 7 only needs to be placed in the silencer combustion tube 1.

[0051] The upper part of the silencer combustion tube 1 is disc-shaped, and the lower part is tubular. The ceramic silencer tube 7 is placed in the silencer combustion tube 1, and the outer wall shape of the ceramic silencer tube 7 matches the inner diameter shape of the silencer combustion tube 1. The silencer combustion tube 1 is composed of a straight tube 12 and a furnace ring 11. The outer diameter of the furnace ring 11 is larger than the outer diameter of the straight tube 12. The small diameter straight tube 12 structure is convenient for passing through the furnace hole at the bottom of the furnace basin 10 and connecting with the ion burner ion combustion body 2. The enlarged diameter furnace ring 11 structure is convenient for forming a heating plate to increase its heating area for the pot. The disc-shaped furnace ring 11 structure can also play a supporting role when installing the ceramic silencer tube 7. A fire dividing plate 6 is provided on the top of the silencer combustion tube 1, and the fire dividing plate 6 can evenly disperse the heat ejected from the top of the silencer combustion tube 1.

[0052] Compared with the first generation product, the present invention not only designs the structure of the muffler combustion tube 1, but also adds the design of the ceramic muffler tube 7. Due to the change of its combustion system, the ion combustion body 2 is also further optimized. Figure 4 :

[0053] 1. Due to the generation of the vortex hot air field at the lower part of the silencer combustion tube 1, the secondary combustion chamber is no longer a fixed cavity structure. It will move up or down with the change of the amount of oil intake. It is no longer limited to the space between the lower rings of the ion fire-dividing tooth combustion tube. The vortex hot air field formed by the utility model can more easily ensure its stable combustion during the change of the oil intake amount. Therefore, the utility model cancels the design of the ion fire-dividing tooth.

[0054] 2. The first generation product has an annular oil path on the inner wall of the vaporization combustion cylinder 22, and a circle of vaporization combustion net 8 is welded on the oil path. After the liquid fuel enters from the oil inlet 25, it first enters the annular oil path and then burns on the vaporization combustion net 8. However, the utility model no longer has an annular oil path, firstly because it is difficult to open the oil path on the inner wall and it is inconvenient to process. Secondly, the area of ​​the vaporization combustion net 8 is not very large, and the area of ​​the oil film formed is limited.

[0055] The utility model does not have an oil circuit on the vaporization combustion tube 22, but an annular vaporization combustion net 8 is arranged inside the vaporization combustion tube 22, and the liquid fuel is directly sprayed into the primary combustion chamber, collides with the cyclone generated by the cyclone air inlet tube 23 to be dispersed, and scattered on the vaporization combustion net 8 around, and dispersed and cracked on the vaporization combustion net 8, which makes it easier to vaporize and burn. The height of the vaporization combustion net 8 can be flush with the height of the vaporization combustion tube 22, and the area is greatly increased. The top surface of the base 21 is provided with an annular limiting protrusion for limiting the vaporization combustion net 8, and the annular limiting protrusion can limit the vaporization combustion net 8, and the vaporization combustion net 8 can be welded and fixed to the annular limiting protrusion and the inner wall of the vaporization combustion tube 22 by spot welding.

[0056] The utility model also includes an oil pump 4 and an ignition plug, wherein the ignition plug is installed in the ignition plug installation hole, and the oil pump 4 is connected to the oil inlet 25 on the ion combustion body 2 through an oil inlet pipe, and the oil inlet 25 is opened along the tangent direction of the vaporization combustion tube 22 so that the liquid fuel input from the oil inlet 25 is distributed along the annular oil path, and the oil pump 4 is connected to the ion combustion body 2 through the oil inlet pipe, and the ignition plug is installed in the ignition plug installation hole, and the ignition operation is performed through the ignition plug.

[0057] Liquid fuel will burn in the combustion chambers of each level of the combustion device, and the overall temperature is relatively high. Considering the installation and use issues, a combustion body installation box 3 is designed. The combustion body installation box 3 is a hollow cavity structure. The ion combustion body 2 is installed on the upper top surface of the combustion body installation box 3, and the impeller air intake mechanism 24 of the ion combustion body 2 is located in the combustion body installation box 3. A fan 5 is provided at the bottom of the combustion body installation box 3, and the air outlet of the fan 5 is connected to the inside of the combustion body installation box 3. The combustion body installation box 3 serves as a wind cavity. The fan 5 pumps air into the combustion body installation box 3, and the air enters the ion combustion body 2 through the impeller air intake mechanism 24 to realize the spiral jet of the cyclone air intake cylinder 23. The fan 5 can also dissipate heat from the bottom of the ion combustion body 2 while blowing air, so as to avoid the combustion body installation box 3 from being too high in temperature and scalding the user. It can also play a good role in cooling and protecting the circuits, pipelines and electrical components. The circuits and oil pipes can pass through the combustion body installation box 3 and be connected to the ion combustion body 2.

[0058] It also includes a thermocouple probe 9, which is vertically installed on the cyclone air inlet cylinder 23, and the upper end of the thermocouple probe 9 passes through the cyclone air inlet cylinder 23 and is located in the lower silencer tube of the ceramic silencer tube 7. The flame combustion state can be detected by the thermocouple probe 9 to determine whether the liquid fuel is burning so as to perform flameout protection.

[0059] In order to realize rotating air intake in the first-stage combustion chamber, the cyclone air intake cylinder 23 adopts bottom spiral air intake and side spiral air jet, so that the air can rotate in the first-stage combustion chamber, which is beneficial to the dispersed atomization of liquid fuel. In order to realize the air intake method in the above manner, the cyclone air intake cylinder 23 is structurally designed. The cyclone air intake cylinder 23 is composed of a wind chamber cylinder and a wind chamber cover. The lower end of the wind chamber cylinder is fixed on the base 21, and the air outlet is located in the wind chamber cylinder. The wind chamber cover is welded to the upper end of the wind chamber cylinder, and an installation hole for installing the thermocouple probe 9 is opened in the middle of the wind chamber cover to facilitate the installation of the thermocouple probe 9.

[0060] The impeller air intake mechanism 24 is composed of a spiral tooth and a spiral tooth cover plate. There are several spiral teeth, and the spiral teeth are evenly distributed along the circumferential direction of the air inlet at the bottom of the base 21. The spiral tooth cover plate is welded to the spiral teeth. In order to realize the rotary air intake, the impeller air intake channel is designed. The impeller air intake channel is composed of a spiral tooth and a spiral tooth cover plate. There are several spiral teeth, and the spiral teeth are evenly distributed along the circumferential direction of the air inlet at the bottom of the base 21. The spiral tooth cover plate is welded to the spiral teeth. After the spiral tooth cover plate is installed, when the fan 5 is turned on, the air can only enter from the gap between the spiral teeth and enter the cyclone air intake cylinder 23 in a spiral shape, so as to realize the spiral cyclone jet.

[0061] In order to improve the cyclone air outlet effect and ensure that the liquid fuel in the upper and lower parts of the first-level combustion chamber can be fully vaporized and burned, the air outlet is divided into two types: a high-position air outlet and a low-position air outlet. The high-position air outlet and the low-position air outlet are arranged in sequence at intervals. The high-position air outlet is opened at the upper part of the wind chamber tube, and the low-position air outlet is opened from the upper part of the wind chamber tube to the lower part of the wind chamber tube. The opening of the high-position air outlet can ensure that the liquid fuel in the upper part of the first-level combustion chamber is fully in contact with the air, thereby improving its vaporization and combustion effect and avoiding a large amount of unvaporized liquid fuel from entering the secondary combustion chamber.

[0062] The base 21, vaporization combustion tube 22, impeller air intake mechanism 24 and cyclone air intake tube 23 are integrally precision-cast, and the integral precision-casting greatly increases the structural connection stability and sealing performance. The entire ion combustion body 2 has only a flame outlet on the vaporization combustion tube 22 and an air inlet on the impeller air intake mechanism 24 at the bottom of the base 21. There is no need to worry about the leakage of liquid fuel. After the combustion device is shut down, the remaining liquid fuel will only flow into the primary combustion chamber after condensation, and there will be no external leakage. When ignited next time, it can be directly vaporized and burned, which greatly improves the safety of the equipment.

[0063] The above is a detailed introduction to a multi-stage silent and energy-saving combustion device for liquid fuel provided by the utility model. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model; at the same time, for general technical personnel in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope, and changes and improvements to the utility model will be possible without exceeding the concept and scope specified in the attached claims. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A multi-stage silent energy-saving combustion device, characterized in that: The combustion device consists of an ion combustion body and a silencer combustion tube. The caliber of the silencer combustion tube is the same as the caliber of the fire outlet of the ion combustion body and is fixed on the fire outlet of the ion combustion body. A ceramic silencer tube is arranged in the silencer combustion tube. The ceramic silencer tube is made of porous ceramics. A plurality of silencer teeth are arranged on the inner wall of the tube hole of the ceramic silencer tube. The silencer teeth are arranged along the length direction of the ceramic silencer tube and are evenly spaced along the circumferential direction of the tube hole.

2. A multi-stage silent energy-saving combustion device according to claim 1, characterized in that: The muffler combustion tube is composed of an upper furnace ring and a lower straight tube. The furnace ring is disc-shaped, and the straight tube is tubular. The diameter of the furnace ring is greater than the outer diameter of the straight tube.

3. A multi-stage silent and energy-saving combustion device according to claim 2, characterized in that: The outer diameter of the ceramic silencer pipe matches the inner diameter of the silencer combustion tube. The ceramic silencer pipe consists of an upper silencer tube and a lower silencer tube. The upper silencer tube and the lower silencer tube of the ceramic silencer pipe are integrally formed.

4. A multi-stage silent and energy-saving combustion device according to claim 3, characterized in that: The pipe hole of the upper silencer is narrow at the bottom and wide at the top and gradually expands, and the diameter of the pipe hole of the lower silencer is the same as the diameter of the lower end of the upper silencer.

5. The multi-stage silent and energy-saving combustion device according to claim 1 is characterized in that: A fire distribution plate is arranged on the top of the silencer combustion tube.

6. The multi-stage silent and energy-saving combustion device according to claim 1 is characterized in that: The ion combustion body is mainly composed of a base, the center of which is provided with an air inlet, and the top surface of the base is provided with a cyclone air inlet cylinder and a vaporization combustion cylinder in sequence from the inside to the outside, and the bottom surface of the base is provided with an impeller air inlet mechanism, and the impeller air inlet mechanism is connected to the inside of the cyclone air inlet cylinder through the air inlet, and a plurality of air outlets are vertically provided around the cyclone air inlet cylinder, and a primary combustion chamber is formed between the outer wall of the cyclone air inlet cylinder and the vaporization combustion cylinder, and an oil inlet and an ignition plug mounting hole are provided on the side of the ion combustion body, and the oil inlet is connected to the inside of the primary combustion chamber, and the lower end of the silencer combustion cylinder is fixed to the upper end of the vaporization combustion cylinder.

7. A multi-stage silent and energy-saving combustion device according to claim 6, characterized in that: A circle of annular vaporization combustion net is fixedly arranged on the inner wall of the vaporization combustion cylinder, and an annular limiting protrusion for limiting the vaporization combustion net is arranged on the top surface of the base.

8. The multi-stage silent and energy-saving combustion device according to claim 6, characterized in that: It also includes an oil pump and an ignition plug. The ignition plug is installed in the ignition plug installation hole. The oil pump is connected with the oil inlet on the ion combustion body through an oil inlet pipe. The oil inlet is opened along the tangent direction of the vaporization combustion cylinder.

9. The multi-stage silent and energy-saving combustion device according to claim 6, characterized in that: It also includes a combustion body installation box, which is a hollow cavity structure. The ion combustion body is installed on the upper surface of the combustion body installation box. The impeller air intake mechanism of the ion combustion body is located in the combustion body installation box. A fan is provided at the bottom of the combustion body installation box, and the air outlet of the fan is connected to the inside of the combustion body installation box.

10. The multi-stage silent and energy-saving combustion device according to claim 6, characterized in that: It also includes a thermocouple probe, which is vertically installed on the cyclone air inlet cylinder, and the upper end of the thermocouple probe passes through the cyclone air inlet cylinder and is located at the lower part of the ceramic muffler pipe.

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