An electrified liquid fuel burner

Abstract

An electrified liquid fuel burner, the nozzle is installed on the gasification chamber, and is arranged towards the air inlet end of the ejector pipe; the gasification chamber is connected with the gasification chamber of the nozzle; the electric heating body extends into the gasification chamber; the oil pump sends the liquid fuel to the gasification chamber through the oil inlet pipe, and drops or sprays to the electric heating body; the electric heating body can heat the gasification chamber, convert the liquid fuel into gas state, and form high-pressure gas in the gasification chamber, which is sprayed into the ejector pipe from the nozzle. The utility model, liquid fuel is heated by the electric heating body in the gasification chamber before entering the combustion area (ejector pipe), and is completely converted into gas state (gas). The gaseous fuel is fully premixed with air in the ejector pipe, and burns more quickly and completely after entering the furnace head. The condensation of unburned liquid particles at low temperature in the traditional atomization technology is fundamentally avoided, the root cause of white smoke emission is eliminated, and the environmental protection performance is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of liquid fuel burner technology, and in particular to an electrified liquid fuel burner. Background Technology

[0002] Traditional liquid fuel combustion devices achieve fuel combustion based on atomization injection technology. The core principle is to atomize liquid fuel into micron-sized particles using a high-pressure nozzle, which are then ignited by an ignition system to form a diffuse flame. However, this technology has significant inherent drawbacks in practical applications: when the burner enters the shutdown phase, the rapid drop in the combustion chamber temperature gradient causes unburned atomized fuel to quickly condense and liquefy. This phase change process produces a double negative impact.

[0003] Firstly, residual fuel forms larger droplet clusters at low temperatures, creating white smoke containing unburned hydrocarbons in the combustion chamber, resulting in residual smoke emissions. Secondly, condensed fuel can cause secondary deposits at the nozzle throat and burner guide groove, leading to blockages that require periodic unblocking and maintenance using physical probes.

[0004] Therefore, further improvements are needed. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an electrified liquid fuel burner.

[0006] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: an electrified liquid fuel burner, including: a burner head, an ejector tube, a nozzle, a gasification chamber, an electric heating element, an oil inlet pipe, and an oil pump;

[0007] The burner head is equipped with an ejector tube; the nozzle is installed in the gasification chamber and faces the air inlet end of the ejector tube; the gasification chamber surrounds and connects to the gasification chamber of the nozzle; the electric heating element extends into the gasification chamber; the oil pump delivers liquid fuel to the gasification chamber through the oil inlet pipe, and drips or sprays it onto the electric heating element; the electric heating element can heat the gasification chamber and convert the liquid fuel into a gaseous state, forming high-pressure gas in the gasification chamber, which is then injected from the nozzle into the ejector tube.

[0008] Optionally, the electric heating element is a heating rod, which extends into the vaporization chamber.

[0009] Optionally, the electric heating element is provided with a stainless steel protective shell.

[0010] Optionally, the vaporization chamber is cylindrical, and the heating rod is rod-shaped; the outer diameter of the heating rod is slightly smaller than the inner diameter of the vaporization chamber, and the outer wall of the heating rod and the inner wall of the vaporization chamber are spaced apart to form an annular gap cavity, and the oil inlet pipe is connected to the annular gap cavity.

[0011] Optionally, the depth of the annular gap cavity is between 0.3 mm and 2 mm.

[0012] Optionally, the depth of the annular gap cavity is between 0.5 mm and 1 mm.

[0013] Optionally, the outer wall of the heating rod is provided with a spiral air guide groove extending toward the nozzle.

[0014] Optionally, the heating element is kept stable in the range of 260°C to 300°C.

[0015] Optionally, the oil inlet pipe of the ejector tube has several air inlets; the oil inlet pipe is located on the outer periphery and end face of the air inlet end of the ejector tube.

[0016] Optionally, the burner head is provided with an ignition needle and a sensing needle; the burner head is installed on the cooktop housing, and the cooktop housing is provided with an igniter and a control panel.

[0017] The beneficial effects of this invention are as follows: Compared to traditional atomized jet combustion technology, the core design of introducing a forced gasification using an electric heating element brings significant multiple benefits: Before entering the combustion zone (injector tube), the liquid fuel is efficiently heated by the electric heating element in the gasification chamber and completely converted into a gaseous state (fuel gas). The gaseous fuel is fully premixed with air in the injector tube, resulting in faster and more complete combustion after entering the burner. This fundamentally avoids the condensation of unburned liquid particles at low temperatures during shutdown, as is common in traditional atomization technology, eliminating the root cause of white smoke emissions and significantly improving environmental performance. It effectively prevents blockage of key components. Because the fuel undergoes forced gasification and phase change before combustion, there are no unburned liquid fuel droplets in the combustion chamber or subsequent processes. During shutdown cooling, there is no liquid fuel available for condensation and secondary liquefaction deposition. Therefore, key parts such as the nozzle throat and burner guide groove will not experience physical blockage caused by the accumulation of condensed fuel, as is common in traditional technologies, completely solving the persistent problem of condensation and deposition during shutdown.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the structure of the electrified liquid fuel burner of this utility model.

[0021] Explanation of key component symbols:

[0022] 10. Burner head; 11. Ignition needle; 12. Induction needle; 20. Injector tube; 21. Air inlet; 30. Nozzle; 40. Vaporization chamber; 41. Vaporization chamber; 50. Electric heating element; 51. Air guide groove; 60. Oil inlet pipe; 70. Oil pump; 80. Annular gap cavity; 90. Stove shell; 91. Igniter; 92. Control panel; Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] Example

[0028] Reference Figure 1The present invention proposes an electrified liquid fuel burner, comprising: a burner head 10, an ejector tube 20, a nozzle 30, a gasification chamber 40, an electric heating element 50, an oil inlet pipe 60, and an oil pump 70.

[0029] The burner head 10 is provided with an ejector tube 20; the nozzle 30 is installed in the gasification chamber 40 and is positioned towards the air inlet end of the ejector tube 20; the gasification chamber 40 surrounds and connects to the gasification chamber 41 of the nozzle 30; the electric heating element 50 extends into the gasification chamber 40; the oil pump 70 delivers liquid fuel to the gasification chamber 40 through the oil inlet pipe 60, and drips or sprays it onto the electric heating element 50; the electric heating element 50 can heat the gasification chamber 40 and convert the liquid fuel into a gaseous state, and form high-pressure gas in the gasification chamber 41, which is then injected from the nozzle 30 into the ejector tube 20.

[0030] Compared to traditional atomized jet combustion technology, this invention introduces a core design involving forced gasification using an electric heating element 50, resulting in several significant benefits: Before entering the combustion zone (ejector tube 20), the liquid fuel is efficiently heated and completely converted into a gaseous state (fuel gas) by the electric heating element 50 within the gasification chamber 40. The gaseous fuel is fully premixed with air within the ejector tube 20, leading to faster and more complete combustion upon entering the burner head 10. This fundamentally avoids the condensation of unburned liquid particles at low temperatures during shutdown, as is common in traditional atomization technologies, eliminating the root cause of white smoke emissions and significantly improving environmental performance. It also effectively prevents blockage of key components. Because the fuel undergoes forced gasification and phase change before combustion, there are no unburned liquid fuel droplets in the combustion chamber or subsequent processes. During shutdown cooling, there is no liquid fuel available for condensation and secondary liquefaction deposition. Therefore, key components such as the nozzle throat and burner guide groove will not experience physical blockage caused by the accumulation of condensed fuel, as is common in traditional technologies, completely solving the persistent problem of condensation and deposition during shutdown.

[0031] In this embodiment, the electric heating element 50 is a heating rod that extends into the gasification chamber 41. The design of directly inserting a rod-shaped heating element into the gasification chamber 41 increases the contact area between the heating element and the fuel, accelerating the heat absorption and gasification of the droplets; shortens the gasification path, reducing fuel residence time and avoiding localized high-temperature cracking and carbon buildup; and results in a compact structure, reducing the volume of the gasification chamber 41 and improving thermal response speed and energy efficiency.

[0032] Preferably, the heating element 50 is provided with a stainless steel protective shell. This prevents fuel from directly contacting the heating wire, avoids corrosive fuel from eroding the heating element, and extends its lifespan; it also prevents metal oxidation and pulverization at high temperatures from contaminating the fuel gas, ensuring clean combustion.

[0033] In this embodiment, the vaporization chamber 41 is cylindrical, and the heating rod is rod-shaped. The outer diameter of the heating rod is slightly smaller than the inner diameter of the vaporization chamber 41. The outer wall of the heating rod and the inner wall of the vaporization chamber 41 form an annular gap cavity 80, and the oil inlet pipe 60 is connected to the annular gap cavity 80. The fuel forms a liquid film within the narrow gap, doubling the heated area and increasing the vaporization rate. The narrow channel has a throttling effect on the fuel flow, stabilizing the pressure in the vaporization chamber 41 and ensuring injection uniformity.

[0034] In this embodiment, after testing and verification, to ensure a better electrothermal gasification effect on liquid fuel, the depth of the annular gap cavity 80 is between 0.3 mm and 2 mm.

[0035] Preferably, the depth of the annular gap cavity 80 is between 0.5 mm and 1 mm.

[0036] In this embodiment, the outer wall of the heating rod is provided with a spiral air guide groove 51 extending toward the nozzle 30. The unique design of the spiral air guide groove 51 on the outer wall of the heating rod forms a unidirectional flow barrier, causing the vaporized and expanding liquid fuel to spirally expand forward and bulge out, preventing the high-temperature combustion gas in the combustion chamber from flowing back into the vaporization chamber 41. At the same time, it effectively squeezes out residual liquid fuel or particulate matter in the vaporization chamber 41, avoiding blockage of the vaporization chamber 40 and the nozzle 30.

[0037] Preferably, after testing and experimentation, in order to ensure a better and faster vaporization and expansion effect of the liquid fuel, the heating of the electric heating element 50 is stabilized in the range of 260°C to 300°C.

[0038] In this embodiment, the oil inlet pipe 60 of the ejector tube 20 has several air inlets 21; the oil inlet pipe 60 is located on the outer periphery and end face of the air inlet end of the ejector tube 20. The end face and circumferential air intake form a three-dimensional ejector flow field, eliminating dead zones in air intake, improving air ejection performance, and ensuring a stable air-fuel ratio.

[0039] In this embodiment, the burner head 10 is provided with an ignition needle 11 and a sensing needle 12; the burner head 10 is installed on the stove housing 90, and the stove housing 90 is provided with an igniter 91 and a control panel 92.

[0040] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. An electrified liquid fuel burner, characterized in that, include: Burner head, ejector tube, nozzle, gasification chamber, electric heating element, oil inlet pipe and oil pump; The furnace head is equipped with an ejector tube; The nozzle is installed in the vaporization chamber and is positioned towards the air inlet end of the ejector tube; the vaporization chamber surrounds and connects to the vaporization chamber of the nozzle. The electric heating element extends into the gasification chamber; the oil pump delivers liquid fuel to the gasification chamber through the oil inlet pipe, and drips or sprays it onto the electric heating element; the electric heating element heats the gasification chamber and converts the liquid fuel into a gaseous state, forming high-pressure gas in the gasification chamber, which is then injected into the ejector pipe from the nozzle.

2. The electrified liquid fuel burner according to claim 1, characterized in that: The electric heating element is a heating rod, which extends into the vaporization chamber.

3. The electrified liquid fuel burner according to claim 2, characterized in that: The electric heating element is equipped with a stainless steel protective shell.

4. The electrified liquid fuel burner according to claim 2, characterized in that: The vaporization chamber is cylindrical, and the heating rod is rod-shaped. The outer diameter of the heating rod is slightly smaller than the inner diameter of the vaporization chamber. The outer wall of the heating rod and the inner wall of the vaporization chamber are spaced apart to form an annular gap cavity, and the oil inlet pipe is connected to the annular gap cavity.

5. The electrified liquid fuel burner according to claim 4, characterized in that: The depth of the annular gap cavity is between 0.3 mm and 2 mm.

6. The electrified liquid fuel burner according to claim 5, characterized in that: The depth of the annular gap cavity is between 0.5 mm and 1 mm.

7. The electrified liquid fuel burner according to claim 4, characterized in that: The outer wall of the heating rod is provided with a spiral air guide groove extending toward the nozzle.

8. The electrified liquid fuel burner according to claim 1, characterized in that: The heating element maintains a stable temperature between 260°C and 300°C.

9. The electrified liquid fuel burner according to claim 1, characterized in that: The oil inlet pipe of the ejector tube has several air inlets; the oil inlet pipe is located on the outer periphery and end face of the air inlet end of the ejector tube.

10. The electrified liquid fuel burner according to claim 1, characterized in that: The burner head is equipped with an ignition needle and a sensing needle; the burner head is installed on the stove housing, and the stove housing is equipped with an igniter and a control panel.

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