A combustion device for supplying steam by vaporizing liquid fuel

Abstract

This utility model discloses a combustion device for vaporizing liquid fuel, including a vaporization gas supply component, a mixing cylinder, and a combustion cylinder. The vaporization gas supply component includes a vaporization cylinder and an electric heating element installed inside the vaporization cylinder. A liquid inlet pipe and a steam nozzle are connected to the vaporization cylinder. The mixing cylinder has a mixing chamber corresponding to the steam nozzle, and the combustion cylinder is connected to the mixing chamber. An ignition needle is correspondingly installed on the combustion cylinder. In this utility model, liquid fuel is input into an annular cavity through the liquid inlet pipe. The electric heating element is attached to the inner wall of the inner cylinder. When energized, the electric heating element uniformly heats the annular cavity, creating a high-temperature environment that reaches the vaporization temperature of the liquid fuel. The liquid fuel vaporizes into a gaseous state and is injected into the mixing chamber through the steam nozzle. The mixing chamber mixes the gaseous fuel and air, which is then input into the combustion cylinder for ignition and combustion. This method achieves the heating and vaporization of liquid fuel and thorough mixing with air, improving the fuel utilization rate of the liquid fuel.

Description

Technical Field

[0001] This utility model relates to a liquid fuel combustion device, and more particularly to a combustion device for supplying steam through liquid fuel vaporization. Background Technology

[0002] Currently, most combustion devices (such as stoves) use liquefied petroleum gas (LPG) fuel. This traditional LPG has problems such as low calorific value, high cost, low flash point, flammability, explosiveness, and significant safety hazards. Coal-based liquid fuel for stoves is a clean, non-toxic, high-flash-point liquid fuel for stoves, made from Fischer-Tropsch synthetic hydrocarbons, industrial white oil, and high-flash-point hydrocarbon compounds, compounded with high-molecular-weight oxygen-containing compounds and additives. Its main advantages are wide applicability, low price, high calorific value, good safety, and cleanliness; it is also very safe as it does not burn at room temperature. However, when liquid fuel is used in combustion devices (such as stoves), the liquid fuel sprayed into the combustion zone causes it to adhere in various places, resulting in uneven combustion. The low contact area between the liquid fuel and air makes it difficult to burn completely, leading to low combustion efficiency. Incomplete combustion also produces toxic gases such as carbon monoxide. Therefore, liquid fuel poses a significant obstacle to its application in stoves. Currently, there is a need to develop a device that can convert liquid fuel into a gaseous state and spray it for complete combustion to improve its combustion efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a combustion device for vaporizing liquid fuel and supplying steam, which realizes the heating and vaporization of liquid fuel and its thorough mixing with air, thereby improving the fuel utilization rate of liquid fuel.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A combustion device for vaporizing liquid fuel includes a vaporization gas supply component, a mixing cylinder, and a combustion cylinder. The vaporization gas supply component includes a vaporization cylinder and an electric heating element installed inside the vaporization cylinder. The vaporization cylinder is connected to a liquid inlet pipe and a steam nozzle. The mixing cylinder has a mixing chamber corresponding to the steam nozzle. The combustion cylinder is connected to the mixing chamber, and an ignition needle is installed on the combustion cylinder.

[0006] To better realize this utility model, the vaporization cylinder is composed of a double-layer cylinder structure consisting of an outer cylinder and an inner cylinder. There is a closed annular cavity between the outer cylinder and the inner cylinder. The liquid inlet pipe is connected to one end of the vaporization cylinder and communicates with the annular cavity. The steam nozzle is connected to the other end of the vaporization cylinder and communicates with the annular cavity.

[0007] Preferably, the inner cylinder of the vaporization cylinder has a hollow cavity, which is a heating cavity. The electric heating element is installed in the heating cavity of the inner cylinder and is electrically connected to a power transmission line.

[0008] Preferably, the electric heating element is a hollow cylindrical shape formed by spirally winding an electric heating wire. An inner liner rod is installed in the cavity of the hollow cylindrical body of the electric heating element. One end of the inner liner rod is fixed with an end cap plate, and the other end of the inner liner rod has a threaded section. The inner liner rod passes through the heating cavity of the inner cylindrical body and is tightly fitted with a fastening nut on the threaded section.

[0009] Preferably, the present invention further includes a mounting base, wherein the bottom of the mixing cylinder is mounted on the upper surface of the mounting base, and the vaporization gas supply component is correspondingly mounted on the lower surface of the mounting base.

[0010] Preferably, the lower surface of the mounting base is bolted to a vaporization cylinder mounting bracket, the vaporization gas supply assembly is detachably mounted on the vaporization cylinder mounting bracket with a nut, and the steam injection direction of the steam nozzle is directed towards the center of the mixing chamber.

[0011] Preferably, a fire-gathering plate is installed around the outside of the combustion cylinder.

[0012] Preferably, the overall length of the electric heating element corresponds to the overall length of the heating cavity of the inner cylinder; a high-pressure pulse pump is installed on the liquid inlet pipe.

[0013] Preferably, the outer cylinder of the vaporization cylinder has a steam outlet that communicates with the annular cavity, and the steam outlet is connected to the steam inlet located at the nozzle; both ends of the annular cavity have sealing ends.

[0014] Preferably, the outer wall of the outer cylinder is provided with a heat-insulating coating or is sealed with heat-insulating material; the outer wall of the electric heating element is correspondingly attached to the inner wall of the inner cylinder.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0016] (1) This utility model provides a combustion device for liquid fuel. Liquid fuel is input into an annular cavity through an inlet pipe. An electric heating element is attached to the inner wall of the inner cylinder. When the electric heating element is powered, it can uniformly heat the annular cavity, so that the annular cavity is in a high-temperature environment and reaches the vaporization temperature of the liquid fuel. The liquid fuel vaporizes into a gaseous state and is injected into the mixing chamber through the steam nozzle. The mixing chamber mixes the gaseous fuel and air and inputs it into the combustion cylinder for ignition and combustion. This utility model can realize the heating and vaporization of liquid fuel and fully mix it with air, thereby improving the fuel utilization rate of liquid fuel.

[0017] (2) The vaporization cylinder of this utility model is provided with a liquid inlet pipe at one end and a steam nozzle at the other end. The liquid fuel moves from the liquid inlet pipe to the steam nozzle under the action of air pressure, which can gradually and fully vaporize the liquid fuel. At the same time, the annular cavity surrounds the electric heating element, and the liquid fuel inside the annular cavity can be heated evenly, which improves the vaporization efficiency.

[0018] (3) The electric heating element of this utility model is made of an electric heating wire spirally wound into a cylinder, which is detachably installed inside the vaporization cylinder by means of an inner liner rod. The installation and disassembly are very convenient, and it has the advantages of ingenious structure, novelty and reliable performance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the combustion device in the embodiment;

[0020] Figure 2 for Figure 1 A structural diagram from another perspective;

[0021] Figure 3 This is a schematic diagram of the vaporization cylinder.

[0022] Figure 4 This is a schematic diagram of the internal structure of the vaporization cylinder after cross-section.

[0023] Figure 5 This is a schematic diagram of the structure in the embodiment where the electric heating element is mounted on the inner liner rod;

[0024] Figure 6 This is a schematic diagram of the inner liner rod in the embodiment.

[0025] The names corresponding to the reference numerals in the attached figures are as follows:

[0026] 1 - Vaporizing cylinder, 2 - Outer cylinder, 3 - Inner cylinder, 31 - Heating cylinder cavity, 4 - Annular cavity, 41 - Sealing end, 5 - Liquid inlet pipe, 6 - Steam outlet, 7 - Steam nozzle, 8 - Electric heating element, 9 - Power transmission line, 10 - Inner liner rod, 101 - Threaded section, 102 - End cover plate, 11 - Fitting nut, 12 - Vaporizing cylinder mounting bracket, 121 - Nut, 13 - Mixing cylinder, 131 - Mixing cavity, 14 - Mounting base, 15 - Flame concentrator, 16 - Combustion cylinder. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the embodiments:

[0028] Example

[0029] like Figures 1-6As shown, a combustion device for vaporizing liquid fuel includes a vaporization gas supply assembly, a mixing cylinder 13, and a combustion cylinder 16. The vaporization gas supply assembly includes a vaporization cylinder 1 and an electric heating element 8 installed inside the vaporization cylinder 1. A liquid inlet pipe 5 and a steam nozzle 7 are connected to the vaporization cylinder 1. Preferably, a high-pressure pulse pump is installed on the liquid inlet pipe 5. The mixing cylinder 13 has a mixing chamber 131 corresponding to the steam nozzle 7 (see [link to image]). Figure 1 The injection direction of the nozzle 7 is towards the center line of the mixing chamber 131. The gaseous fuel is mixed with air in the mixing chamber 131 and enters the combustion tube 16 for combustion. The combustion tube 16 is connected to the mixing chamber 131, and an ignition needle is installed on the combustion tube 16 (the ignition needle is used to ignite the vaporized liquid fuel).

[0030] The vaporization cylinder 1 is composed of a double-layer cylinder structure consisting of an outer cylinder 2 and an inner cylinder 3. There is a closed annular cavity 4 between the outer cylinder 2 and the inner cylinder 3 (the annular cavity 4 is used to enter liquid fuel and heat it into gas and spray it out through the steam nozzle 7). Both ends of the annular cavity 4 have sealed ends 41. The liquid inlet pipe 5 is connected to one end of the vaporization cylinder 1 and communicates with the annular cavity 4. The steam nozzle 7 is connected to the other end of the vaporization cylinder 1 and communicates with the annular cavity 4.

[0031] The inner cylinder 3 of the vaporization cylinder 1 has a hollow cavity, which is a heating cavity 31. (See below) Figure 4 The heating cavity 31 is a hollow cavity along the length of the inner cylinder 3. The length of the heating cavity 31 is preferably the same as the length of the inner cylinder 3. An electric heating element 8 is fitted into the heating cavity 31 of the inner cylinder 3 and is electrically connected to a power transmission line 9. Preferably, the overall length of the electric heating element 8 corresponds to the overall length of the heating cavity 31 of the inner cylinder 3. The electric heating element 8 preferably fills the heating cavity 31 (of course, the length of the electric heating element 8 can also be less than the length of the heating cavity 31, and the electric heating element 8 can only concentrate heating in a certain area inside the heating cavity 31).

[0032] The electric heating element 8 is a hollow cylindrical shape formed by spirally winding an electric heating wire. An inner liner rod 10 is installed inside the cavity of the hollow cylindrical body of the electric heating element 8 (the hollow cylindrical body of the electric heating element 8 is used to install the inner liner rod 10). Figure 6As shown, one end of the inner liner rod 10 is fixed with an end cap 102, and the other end of the inner liner rod 10 has a threaded section 101. The inner liner rod 10 passes through the heating cylinder cavity 31 of the inner cylinder 3 and is tightly fitted with a fastening nut 11 threaded onto the threaded section 101. In use, the inner liner rod 10 is first inserted into the heating cylinder cavity 31 of the inner cylinder 3, with the end cap 102 aligned with the end side of the vaporization cylinder 1. The threaded section 101 of the inner liner rod 10 extends slightly beyond the other end side of the vaporization cylinder 1. The electric heating element 8 is then inserted from the other end side of the vaporization cylinder 1 and fitted onto the outside of the inner liner rod 10. After assembly, the fastening nut 11 is then threaded onto the threaded section 101 to secure the electric heating element 8 tightly into the heating cylinder cavity 31 (see [reference]). Figure 5 , Figure 5 To demonstrate the internal structure, the vaporization cylinder 1 is not installed; the electric heating element 8 is fitted onto the inner liner rod 10, with both ends clamped to the vaporization cylinder 1 via end caps 102 and fastening nuts 11, respectively. After installation, the outer wall of the electric heating element 8 is fitted to the inner wall of the inner cylinder 3.

[0033] like Figure 1 , Figure 2 As shown, this utility model also includes a mounting base 14, with the bottom of the mixing cylinder 13 mounted on the upper surface of the mounting base 14, and the vaporization gas supply component correspondingly mounted on the lower surface of the mounting base 14. Preferably, a vaporization cylinder mounting bracket 12 is bolted to the lower surface of the mounting base 14, and the vaporization gas supply component is detachably mounted on the vaporization cylinder mounting bracket 12 via a nut 121. The steam injection direction of the steam nozzle 7 is directed towards the center of the mixing chamber 131. A ignition concentrator 15 is mounted around the outside of the combustion cylinder 16 for ignition.

[0034] like Figure 4 As shown, the outer cylinder 2 of the vaporization cylinder 1 has a through-hole 6 that communicates with the annular cavity 4, and the steam outlet 6 is connected to the steam inlet end of the steam nozzle 7. The outer wall of the outer cylinder 2 of this utility model is provided with a heat-insulating coating or is sealed with heat-insulating material.

[0035] In use, a high-pressure pulse pump is installed on the liquid inlet pipe 5. The high-pressure pulse pump pulses liquid fuel in the form of water mist or fine water droplets into the annular cavity 4 through the liquid inlet pipe 5. The power transmission line 9 supplies power to the electric heating element 8. The electric heating element 8 is located inside the inner cylinder 3 and heats up to form a high-temperature environment. The high temperature is transferred to the annular cavity 4, and the annular cavity 4 achieves rapid vaporization of the liquid fuel. As the electric heating element 8 continues to heat up, the heat inside the annular cavity 4 is evenly distributed. The gas flows from the liquid inlet pipe 5 to the direction of the steam nozzle 7 and forms a stable airflow. The airflow carries the liquid fuel and gradually vaporizes it fully. The air pressure inside the annular cavity 4 increases and is ejected into the mixing chamber 131 through the steam nozzle 7. During the stabilization phase, the temperature near the inlet pipe 5 in the annular cavity 4 reaches the boiling point (i.e., vaporization temperature) of the liquid fuel. The liquid fuel vaporizes upon entering the annular cavity 4. The vaporized gas carries away the partially vaporized liquid fuel from the inlet pipe 5 towards the nozzle 7, where it is gradually vaporized, resulting in more complete vaporization. After complete vaporization, the fuel gas is ejected through the nozzle 7 and supplied to the mixing chamber 131. Figure 1 As shown, air also enters the bottom of the mixing chamber 131 of the mixing cylinder 13. The gaseous fuel mixes with the air in the mixing chamber 131. The gaseous fuel and air are transported to the combustion cylinder 16 for combustion (the ignition needle plays the role of ignition and combustion). The flame generated by the combustion in the combustion cylinder 16 is focused to the central area by the fire-concentrating plate 16. If a pot is placed on the fire-concentrating plate 16, the bottom of the pot can be heated.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A combustion apparatus for vaporizing a liquid fuel for combustion, characterized by: The device includes a vaporization gas supply assembly, a mixing cylinder, and a combustion cylinder. The vaporization gas supply assembly includes a vaporization cylinder and an electric heating element installed inside the vaporization cylinder. The vaporization cylinder is connected to a liquid inlet pipe and a steam nozzle, and a high-pressure pulse pump is installed on the liquid inlet pipe. The mixing cylinder has a mixing chamber corresponding to the steam nozzle, and the combustion cylinder is connected to the mixing chamber. An ignition needle is installed on the combustion cylinder. The vaporization cylinder consists of a double-layered structure composed of an outer cylinder and an inner cylinder, with a closed annular cavity between the outer and inner cylinders. The liquid inlet pipe is connected to one end of the vaporization cylinder and communicates with the annular cavity, and the steam nozzle is connected to the other end of the vaporization cylinder and communicates with the annular cavity. The inner cylinder of the vaporization cylinder has a hollow cavity, which serves as a heating cavity. The electric heating element is installed in the heating cavity of the inner cylinder and is electrically connected to a power transmission line.

2. A combustion apparatus according to claim 1, wherein: The electric heating element is made of an electric heating wire spirally wound into a hollow cylindrical shape. An inner liner rod is installed in the cavity of the hollow cylinder of the electric heating element. One end of the inner liner rod is fixed with an end cap plate, and the other end of the inner liner rod has a threaded section. The inner liner rod passes through the heating cavity of the inner cylinder and is tightly fitted with a fastening nut on the threaded section.

3. A combustion apparatus according to claim 1, wherein: It also includes a mounting base, with the bottom of the mixing cylinder mounted on the upper surface of the mounting base, and the vaporization gas supply component mounted on the lower surface of the mounting base.

4. A combustion apparatus according to claim 3, wherein: The lower surface of the mounting base is bolted to a vaporization cylinder mounting bracket. The vaporization gas supply assembly is detachably mounted on the vaporization cylinder mounting bracket with a nut. The steam injection direction of the steam nozzle is towards the center of the mixing chamber.

5. The combustion device for vaporizing and supplying steam from liquid fuel according to claim 1, characterized in that: The combustion cylinder is surrounded by a fire-gathering plate.

6. A combustion apparatus according to claim 4, wherein: The overall length of the electric heating element corresponds to the overall length of the heating cavity of the inner cylinder; a high-pressure pulse pump is installed on the liquid inlet pipe.

7. A combustion apparatus according to claim 1, wherein: The outer cylinder of the vaporization cylinder has a through-hole that communicates with the annular cavity, and the steam outlet is connected to the steam inlet located at the nozzle; both ends of the annular cavity have sealing ends.

8. A combustion apparatus according to claim 1, wherein: The outer wall of the outer cylinder is provided with a heat-insulating coating or is sealed with heat-insulating material; the outer wall of the electric heating element is correspondingly attached to the inner wall of the inner cylinder.

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