Alcohol-based liquid fuel furnace mechanism

Abstract

The present application relates to a kind of alcohol-based liquid fuel furnace mechanism, including furnace head seat and fuel mixing component, with combustion chamber in furnace head seat, fuel inlet portion is provided in combustion chamber, fuel mixing component includes gas mixing pipe and air pipe, gas mixing pipe is provided with gas mixing chamber, gas mixing pipe is provided with fuel inlet and fuel outlet respectively with gas mixing chamber communication, fuel outlet is communicated with fuel inlet portion by pipeline, air pipe is provided with air chamber, air pipe is provided with air inlet for connecting air pump and a plurality of air outlet for communicating air chamber and gas mixing chamber, by setting air pipe, gas can be from different air outlet from air chamber into gas mixing chamber, air can be quickly spread in gas mixing chamber and mix with atomized fuel in gas mixing chamber, the mixing effect of the two is better, so that fuel and air mixed gas mist can burn more fully, improve the overall combustion effect of alcohol-based liquid fuel furnace.

Description

Technical Field

[0001] This invention relates to the technical field of fuel furnaces, and more specifically to an alcohol-based liquid fuel furnace mechanism. Background Technology

[0002] An alcohol-based liquid fuel stove is a kitchen appliance that uses alcohols (such as methanol, ethanol, butanol, etc.) as fuel. When the alcohol-based liquid fuel stove is working, the liquid fuel needs to be atomized and mixed with air before being transported through pipelines to the combustion chamber of the fuel stove for combustion.

[0003] Existing devices for mixing alcohol-based liquid fuels with air typically atomize the alcohol-based liquid fuel and then blow air directly into the atomized fuel area through an air duct. The air is relatively concentrated and has a short diffusion time, which is not conducive to the mixing of air and atomized alcohol-based liquid fuel. As a result, the two enter the combustion chamber without being fully mixed, and the overall combustion effect is not ideal.

[0004] Therefore, further improvements are needed. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an alcohol-based liquid fuel furnace mechanism, which aims to at least partially solve one of the technical problems mentioned above in the prior art.

[0006] The objective of this invention is achieved as follows:

[0007] An alcohol-based liquid fuel furnace mechanism includes a burner head and a fuel mixing assembly. The burner head has a combustion chamber and a fuel inlet. The fuel mixing assembly includes a mixing pipe and an air pipe. The mixing pipe has a mixing chamber and a fuel inlet and a fuel outlet that are respectively connected to the mixing chamber. The fuel outlet is connected to the fuel inlet via a pipe. The air pipe has an air chamber and an air inlet for connecting an air pump and a plurality of air outlets for connecting the air chamber and the mixing chamber.

[0008] The air outlets are distributed along the length of the air pipe to form groups of air holes, and several groups of air holes are provided on the side wall of the air pipe corresponding to the position of the mixing chamber.

[0009] The air pipe has a protrusion at the end facing the fuel outlet. The mixing chamber forms a first air chamber that communicates with the fuel inlet and a second air chamber that communicates with the fuel outlet through the protrusion. A gap is formed between the protrusion and the side wall of the mixing chamber to connect the first air chamber and the second air chamber.

[0010] The protrusion is provided with a guide slope on the side facing the first air chamber. The guide slope is inclined from the outer wall of the air pipe toward the gap between the first and second air chambers.

[0011] The inner diameter of the second air chamber is not less than the inner diameter of the fuel outlet. The second air chamber is funnel-shaped, and its inner diameter decreases towards the fuel outlet.

[0012] The fuel inlet is located at the center of the combustion chamber on the burner head seat, and includes a nozzle located at the bottom of the burner head seat at the center of the combustion chamber. The nozzle has a central nozzle and an outer nozzle. The central nozzle is located at the center of the nozzle, and the outer nozzles are evenly distributed around the central nozzle in the circumferential direction.

[0013] The nozzle is connected to a spray head on the side facing the combustion chamber. The side wall of the spray head is provided with several spray holes distributed circumferentially, and the spray holes are inclined upward from the inside to the outside.

[0014] The bottom of the combustion chamber is provided with several air intake protrusions distributed circumferentially around the nozzle. Each air intake protrusion is provided with several air intake holes. The upper and lower ends of the air intake holes respectively penetrate the upper end face of the air intake protrusion and the bottom of the burner seat. At least part of the periphery of the upper end face of the air intake protrusion is formed with a liquid discharge slope. The upper side of the liquid discharge slope is connected to the upper end face of the air intake protrusion, and its lower side is inclined towards the bottom of the combustion chamber.

[0015] A fan is provided below the burner head base, and a fan hood is connected between the fan and the burner head base. The inner side of the fan hood has an air guide chamber, and a guide plate is provided in the air guide chamber. The guide plate has several guide holes distributed around its center position. A guide vane is provided on the side of the guide hole facing the air supply structure. An opening in the horizontal direction is formed between the guide vane and the guide hole. Different guide vanes form an air guide structure for making the airflow vortex towards the air supply structure.

[0016] The outer side of the guide plate is provided with an outward flange, which is tightly connected to the inner side wall of the shroud.

[0017] The beneficial effects of this invention are:

[0018] By setting up air pipes, gas can enter the mixing chamber from different air outlets, allowing the air to quickly diffuse within the mixing chamber and mix with the atomized fuel. This results in better mixing and more complete combustion of the fuel-air mixture. The mixed air and fuel atomizes then enter the combustion chamber through the fuel inlet for combustion, improving the overall combustion performance of the alcohol-based liquid fuel furnace.

[0019] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0021] Figure 2 This is a cross-sectional schematic diagram of the fuel mixing assembly according to an embodiment of the present invention.

[0022] Figure 3 This is an exploded view of the fuel mixing assembly according to an embodiment of the present invention. Figure 1 .

[0023] Figure 4 This is an exploded view of the fuel mixing assembly according to an embodiment of the present invention. Figure 2 .

[0024] Figure 5 This is an exploded view of the burner head base according to an embodiment of the present invention. Figure 1 .

[0025] Figure 6 This is an exploded view of the burner head base according to an embodiment of the present invention. Figure 2 .

[0026] Figure 7 This is a cross-sectional schematic diagram of the burner head seat according to an embodiment of the present invention.

[0027] Figure 8 This is an enlarged view of embodiment A of the present invention.

[0028] Figure 9 This is an enlarged view of embodiment B of the present invention. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] See Figures 1-9 The alcohol-based liquid fuel furnace mechanism includes a burner head 1 and a fuel mixing assembly. The burner head 1 has a combustion chamber 11, and the combustion chamber 11 has a fuel inlet. The fuel mixing assembly includes a mixing pipe 21 and an air pipe 22. The mixing pipe 21 has a mixing chamber, and the mixing pipe 21 has a fuel inlet 213 and a fuel outlet 214 respectively communicating with the mixing chamber. The fuel outlet 214 is connected to the fuel inlet through a pipe. The air pipe 22 has an air chamber 221. The air pipe 22 is provided with an air inlet 222 for connecting the air pump and a plurality of air outlets 223 for connecting the air chamber 221 and the mixing chamber. By setting the air pipe 22, gas can enter the mixing chamber from the air chamber 221 from different air outlets 223, so that the air can quickly diffuse in the mixing chamber and mix with the atomized fuel in the mixing chamber. The mixing effect of the two is better, so that the fuel and air mixture can burn more completely. The mixed air and fuel mixture enter the combustion chamber 11 through the fuel inlet for combustion, improving the overall combustion effect of the alcohol-based liquid fuel furnace.

[0031] Furthermore, the air outlet 223 is distributed along the length of the air pipe 22 to form a group of air holes. Several groups of air holes are provided on the side wall of the air pipe 22 corresponding to the position of the mixing chamber. In this embodiment, the included angle between adjacent groups of air holes is 120°. Different groups of air holes can be combined to allow air to enter the mixing chamber from different positions, making the air distribution in the mixing chamber more uniform and more conducive to thorough mixing with the atomized fuel.

[0032] Furthermore, the end of the air pipe 22 facing the fuel outlet 214 is provided with a protrusion 224. The mixing chamber forms a first air chamber 211 communicating with the fuel inlet 213 and a second air chamber 212 communicating with the fuel outlet 214 through the protrusion 224. A gap is formed between the protrusion 224 and the side wall of the mixing chamber to connect the first air chamber 211 and the second air chamber 212. Air and atomized fuel are mixed for the first time in the first air chamber 211, and then enter the second air chamber 212 for a second mixing through the gap. The protrusion 224 allows air and fuel to have two opportunities to mix with each other. During the process of the air and fuel mist passing through the gap, the path of the air and fuel mist mixture narrows at the position of the gap, and the air and fuel mist mixture can be further atomized, and the air and atomized fuel are mixed more thoroughly.

[0033] Furthermore, a guide slope 2241 is provided on the side of the protrusion 224 facing the first air chamber 211. The guide slope 2241 is inclined from the outer wall of the air pipe 22 toward the gap between the first air chamber 211 and the second air chamber 212. The air mist passing through the outer wall of the air pipe 22 has an outward diffusion tendency under the action of the guide slope, which can play a certain blocking effect on the air mist moving in the horizontal direction, thereby prolonging the mixing time of the air mist in the first air chamber 211 and improving the mixing effect.

[0034] Furthermore, the inner diameter of the second gas chamber 212 is not less than the inner diameter of the fuel outlet 214. The second gas chamber 212 is funnel-shaped, and its inner diameter decreases towards the fuel outlet 214. This causes the gas mist to narrow during the flow from the second gas chamber 212 to the fuel outlet 214. Under the action of Bernoulli's principle, the gas mist in this process can be accelerated, making the gas mist discharged from the fuel outlet 214 at a higher speed, and the gas mist can enter the fuel furnace through the pipe more quickly.

[0035] Furthermore, the fuel inlet is located on the burner head seat 1 at the center of the combustion chamber 11, including a nozzle 12 located at the bottom of the burner head seat 1 at the center of the combustion chamber 11. The nozzle 12 is provided with a central nozzle 121 and an outer nozzle 122. The central nozzle 121 is located at the center of the nozzle 12, and the outer nozzle 122 is evenly distributed around the central nozzle 121 in the circumferential direction, so that the fuel sprayed through the nozzle 12 can be atomized in an outward diverging manner and better diffuse to different positions of the combustion chamber 11.

[0036] Furthermore, a nozzle 13 is connected to the side of the nozzle 12 facing the combustion chamber 11. The side wall of the nozzle 13 is provided with several circumferentially distributed injection holes 131. The injection holes 131 are inclined upward from the inside to the outside, which further enhances the effect of the atomized fuel spreading outward.

[0037] Furthermore, the bottom of the combustion chamber 11 is provided with several air intake protrusions 14 distributed circumferentially around the nozzle 12. The air intake protrusions 14 are provided with several air intake holes 141. The upper and lower ends of the air intake holes 141 respectively penetrate the upper end face of the air intake protrusions 14 and the bottom of the burner head seat 1. The air intake protrusions 14 create a height difference between the air intake holes 141 and the bottom of the burner head seat 1, so that fuel droplets can drip onto the bottom surface of the burner head seat 1 and then be vaporized by the high temperature generated when the fuel furnace is working, reducing the chance of fuel droplets accumulating on the surface of the air intake protrusions 14.

[0038] When the fuel furnace is working, it generates an upward hot airflow, which creates a negative pressure in the combustion chamber 11. Air can enter the combustion chamber 11 from the outside of the burner seat 1 through the air inlet 141, which provides secondary oxygen to the fuel and air mixture in the combustion chamber 11, thereby increasing the oxygen content in the combustion chamber 11, making the fuel burn more completely, and also causing the gas in the combustion chamber 11 to tend to rise, making the fire generated by the fuel furnace more intense.

[0039] At least a portion of the periphery of the upper end face of the air intake boss 14 is formed with a liquid discharge slope 142. The upper side of the liquid discharge slope 142 is connected to the upper end face of the air intake boss 14, and its lower side is inclined towards the bottom of the combustion chamber 11. By setting the liquid discharge slope 142 on the air intake boss 14, the fuel droplets attached to the air intake boss 14 can be prevented from accumulating near the air intake hole 141, reducing the chance of the air intake hole 141 being blocked by fuel droplets. This ensures that air can smoothly enter the combustion chamber 11 from the air intake hole 141, making the fuel combustion effect more stable. Moreover, the liquid droplets attached to the air intake boss 14 can be reduced by the liquid discharge slope 142, reducing the chance of them flowing from the air intake hole 141 to the outside of the bottom of the burner head seat 1 before being vaporized, thus avoiding fuel waste.

[0040] Furthermore, a blower 3 is provided below the burner head base 1, and a wind hood 4 is connected between the blower 3 and the burner head base 1. The inner side of the wind hood 4 has an air guide chamber 41. The wind hood 4 can make the airflow generated by the blower 3 more concentrated, thereby further improving the efficiency of air entering the combustion chamber 11 from the air supply structure.

[0041] A guide plate 5 is provided inside the air guide cavity 41. The guide plate 5 has several guide holes 51 distributed around its center. A guide vane 52 is provided on the side of the guide hole 51 facing the air supply structure. The guide vane 52 and the guide hole 51 form an opening in the horizontal direction. Different guide vanes 52 form an air guide structure to make the air flow in a vortex towards the air supply structure. After the air flow passes through the guide hole 51, it tends to rotate and rise upward around the center of the air guide cavity under the action of the guide vane 52, thereby making the air flow in the air guide cavity form a vortex, increasing the kinetic energy of the air flow, and the air flow can enter the combustion chamber 11 more efficiently.

[0042] Furthermore, the outer side of the guide plate 5 is provided with an outward flange 53, which is tightly connected to the inner sidewall of the shroud 4. The outward flange 53 can improve the connection strength between the guide plate 5 and the shroud 4, and at the same time, the guide plate 5 does not need to be thickened, thus reducing material costs.

[0043] The above embodiments are merely preferred embodiments of the present invention, and the present invention may have other implementations. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope set forth in the claims of this application.

Claims

1. An alcohol-based liquid fuel furnace mechanism, comprising a burner head (1) and a fuel mixing assembly, wherein the burner head (1) has a combustion chamber (11) and a fuel inlet is provided in the combustion chamber (11), characterized in that, The fuel mixing assembly includes a mixing pipe (21) and an air pipe (22). The mixing pipe (21) has a mixing chamber inside. The mixing pipe (21) has a fuel inlet (213) and a fuel outlet (214) that are respectively connected to the mixing chamber. The fuel outlet (214) is connected to the fuel inlet through a pipe. The air pipe (22) has an air chamber (221) inside. The air pipe (22) has an air inlet (222) for connecting an air pump and a plurality of air outlets (223) for connecting the air chamber (221) and the mixing chamber. The air pipe (22) has a protrusion (224) at the end facing the fuel outlet (214). The mixing chamber forms a first air chamber (211) communicating with the fuel inlet (213) and a second air chamber (212) communicating with the fuel outlet (214) through the protrusion (224). A gap is formed between the protrusion (224) and the side wall of the mixing chamber to connect the first air chamber (211) and the second air chamber (212). The protrusion (224) has a guide slope (2241) on the side facing the first air chamber (211). The guide slope (2241) is inclined from the outer wall of the air pipe (22) toward the gap between the first air chamber (211) and the second air chamber (212).

2. The alcohol-based liquid fuel furnace mechanism according to claim 1, characterized in that: The air outlet (223) is distributed along the length of the air pipe (22) to form a group of air holes, and the side wall of the air pipe (22) is provided with a number of groups of air holes corresponding to the position of the mixing chamber.

3. The alcohol-based liquid fuel furnace mechanism according to claim 1, characterized in that: The inner diameter of the second air chamber (212) is not less than the inner diameter of the fuel outlet (214). The second air chamber (212) is funnel-shaped, and its inner diameter decreases in the direction of the fuel outlet (214).

4. The alcohol-based liquid fuel furnace mechanism according to any one of claims 1-3, characterized in that: The fuel inlet is located on the burner head seat (1) at the center of the combustion chamber (11). The nozzle (12) is located at the bottom of the burner head seat (1) at the center of the combustion chamber (11). The nozzle (12) is provided with a central nozzle (121) and an outer nozzle (122). The central nozzle (121) is located at the center of the nozzle (12), and the outer nozzle (122) is evenly distributed around the central nozzle (121) in the circumferential direction.

5. The alcohol-based liquid fuel furnace mechanism according to claim 4, characterized in that: The nozzle (12) is connected to a nozzle (13) on the side facing the combustion chamber (11). The nozzle (13) has several circumferentially distributed spray holes (131) on its side wall. The spray holes (131) are inclined upward from the inside to the outside.

6. The alcohol-based liquid fuel furnace mechanism according to claim 4, characterized in that: The bottom of the combustion chamber (11) is provided with a number of air intake protrusions (14) distributed around the nozzle (12). The air intake protrusions (14) are provided with a number of air intake through holes (141). The upper and lower ends of the air intake through holes (141) respectively penetrate the upper end face of the air intake protrusions (14) and the bottom of the burner head seat (1). At least a partial liquid discharge slope (142) is formed around the upper end face of the air intake protrusions (14). The upper side of the liquid discharge slope (142) is connected to the upper end face of the air intake protrusions (14), and its lower side is inclined towards the bottom of the combustion chamber (11).

7. The alcohol-based liquid fuel furnace mechanism according to claim 6, characterized in that: A blower (3) is provided below the burner head seat (1). A hood (4) is connected between the blower (3) and the burner head seat (1). The inner side of the hood (4) has a gas guide chamber (41). A guide plate (5) is provided in the gas guide chamber (41). A number of guide holes (51) are provided on the guide plate (5) around its center position. A guide plate (52) is provided on the side of the guide hole (51) facing the gas supply structure. An opening is formed between the guide plate (52) and the guide hole (51) in the horizontal direction. Different guide plates (52) form a gas guide structure for making the air flow in a vortex towards the gas supply structure.

8. The alcohol-based liquid fuel furnace mechanism according to claim 7, characterized in that: The outer side of the guide plate (5) is provided with an outward flange (53), which is tightly connected to the inner wall of the wind shroud (4).

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