A methanol fuel combustion device

Abstract

The utility model relates to the technical field of combustion equipment discloses a kind of methanol fuel combustion device, including stove and the combustion mechanism located in the inside of stove, installation port is opened on stove panel, and furnace pot is arranged below installation port, and the bottom of furnace pot is opened with fire hole, and combustion mechanism includes furnace end located directly below fire hole;The central position of the top surface of furnace end is provided with oil nozzle, and combustion disc is arranged outside oil nozzle, and oil pump is connected on oil pipe, and combustion mechanism further includes heater, and heater includes tungsten rod with furnace end side wall plug-in cooperation, and combustion mechanism further includes microcontroller, and the flow of oil pump is adjusted by microcontroller;Liquid methanol is heated and vaporized by heater, forms gaseous methanol, and the flow of oil pump is adjusted by microcontroller, to realize accurate control to firepower, under the premise that methanol fuel is fully combusted, firepower can be adjusted according to actual use demand, and the application range of methanol fuel combustion device is expanded.

Description

Technical Field

[0001] This utility model belongs to the field of combustion equipment technology, and specifically relates to a methanol fuel combustion device. Background Technology

[0002] As a core cooking appliance in daily life and the catering industry, stoves have evolved from burning firewood and coal to using gaseous fuels such as liquefied petroleum gas and natural gas. In recent years, with the diversification of energy structure and increasingly stringent environmental protection requirements, liquid fuels, especially methanol fuel, have received widespread attention due to their wide availability, low cost, and low content of sulfides and nitrogen oxides in combustion products.

[0003] However, directly modifying existing traditional stoves (especially those designed for liquefied petroleum gas or natural gas) to adapt to methanol fuel faces numerous technical bottlenecks. First, as a liquid fuel, methanol's physical properties (such as high latent heat of vaporization and low flash point) differ significantly from those of gaseous fuels. Direct use can lead to poor fuel atomization and incomplete vaporization, resulting in low combustion efficiency and insufficient heat load. Second, the flow rate of methanol cannot be precisely controlled, making it difficult to accurately adjust the flame intensity. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a methanol fuel combustion device to solve the technical problem that the firepower cannot be precisely controlled when using methanol as fuel in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A methanol fuel combustion device includes a stove body and a combustion mechanism located inside the stove body. The stove body panel has a circular mounting opening, and a furnace basin is arranged below the mounting opening. A flame vent is opened at the bottom of the furnace basin. The combustion mechanism includes a burner head located directly below the flame vent, and the burner head and the furnace basin are connected and fixed by a connector. An oil nozzle is arranged at the center of the top surface of the burner head, and a combustion plate is sleeved on the oil nozzle. The combustion plate is directly opposite the flame vent. An ignition needle is also arranged on the top surface of the burner head, and the ignition needle is opposite to the top surface of the combustion plate. The burner head and the fuel storage tank are connected by an oil pipe, and an oil pump is connected to the oil pipe to pressurize the fuel. The combustion mechanism also includes a heater, which includes a tungsten rod that is inserted and mated with the side wall of the burner head. The combustion mechanism also includes a microcontroller to regulate the flow rate of the oil pump.

[0007] Furthermore, the stove body is hollow inside, and a horizontal support is set at the bottom. The support includes multiple crisscrossing horizontal bars. The support is fixedly connected to the side wall of the stove body. A vertical bar is set at the intersection of the horizontal bars. The top of the vertical bar is fixedly connected to the panel of the stove body, and the bottom of the vertical bar is fixedly connected to the support bar.

[0008] Furthermore, the furnace basin has an upward-facing and flared opening, with its top outer wall fully in contact with the installation opening;

[0009] Furthermore, multiple extension blocks are evenly spaced along the circumference at the top of the side of the burner head. Fixed blocks are vertically oppositely arranged on the upper surface of the extension blocks and the upper surface of the flame hole edge. The upper and lower fixed blocks are fixedly connected by a connecting rod. The extension blocks and the flame hole edge are fixed to the fixed blocks by bolts.

[0010] Furthermore, the microcontroller is equipped with a control panel located on the side of the stove body, through which the user interacts with the device.

[0011] Furthermore, the combustion mechanism also includes a temperature sensing wire suspended outside the fuel injector, which is electrically connected to the microcontroller.

[0012] The beneficial effects of this utility model are as follows:

[0013] Compared with existing technologies, this method uses a heater to heat and vaporize liquid methanol to form gaseous methanol. Then, a microcontroller adjusts the flow rate of the oil pump, thereby achieving precise control of the firepower. While ensuring complete combustion of methanol fuel, the firepower can be adjusted according to actual usage needs, expanding the applicability of the methanol fuel combustion device. Attached Figure Description

[0014] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0015] Figure 1 This is a schematic diagram of the methanol fuel combustion device in Embodiment 1 of this utility model;

[0016] Figure 2 This is a top view of the methanol fuel combustion device in Embodiment 1 of this utility model;

[0017] Figure 3 for Figure 2 Enlarged view at point A1;

[0018] Figure 4 This is a schematic diagram of the internal structure of the methanol fuel combustion device in Embodiment 1 of this utility model;

[0019] Figure 5 for Figure 4 Enlarged view at point A2;

[0020] Figure 6 This is a cross-sectional view of the oil nozzle, limiting cylinder, and combustion disc in Embodiment 1 of this utility model.

[0021] The following labels are shown in the attached diagram:

[0022] Stove body 1, panel 101, bracket 102, vertical rod 103, mounting port 104, burner basin 105, burner frame 106, flame vent 107, combustion mechanism 2, burner head 201, extension block 202, fixing block 203, connecting rod 204, oil nozzle 205, limit cylinder 206, combustion plate 207, oil pipe 208, oil pump 209, tungsten rod 210, microcontroller 211, ignition needle 212, temperature sensing wire 213. Detailed Implementation

[0023] Example 1, specifically as follows Figures 1-6 As shown.

[0024] A methanol fuel combustion device includes a stove body 1 and a combustion mechanism 2 located inside the stove body 1.

[0025] like Figure 1 As shown, the stove body 1 is generally rectangular in shape, with supports at all four vertices of its bottom. The stove body 1 is hollow inside, and a horizontal support 102 is installed at its bottom. The support 102 includes multiple crisscrossing horizontal bars, which are welded and fixed to the side wall of the stove body 1. A vertical bar 103 is installed at the intersection of the horizontal bars. The top of the vertical bar 103 is welded and fixed to the panel 101 of the stove body 1, and the bottom of the vertical bar 103 is welded and fixed to the support 102. By setting up the support 102 and the vertical bar 103, the overall structural strength of the stove body 1 can be enhanced, improving its resistance to deformation and load-bearing capacity. On the other hand, it increases the fixing points for related equipment, facilitating the installation of related equipment.

[0026] A circular mounting opening 104 is provided on the panel 101. A furnace frame 106 is provided around the mounting opening 104. The furnace frame 106 is welded and fixed to the upper surface of the panel 101. The furnace frame 106 supports the pot body and provides sufficient air intake channels to ensure complete combustion of fuel and timely discharge of exhaust gas.

[0027] Below the mounting port 104, a furnace basin 105 is provided. The furnace basin 105 has an upward-facing and flared opening. Its top outer wall is in complete contact with the mounting port 104 and the two are fixed by welding. A fire-through hole 107 is opened at the bottom of the furnace basin 105. The flame generated by the combustion of fuel passes through the fire-through hole 107 and heats the pot body on the furnace frame 106.

[0028] The combustion mechanism 2 includes a burner head 201 located directly below the flame hole 107. In this embodiment, the burner head 201 is cylindrical in shape, and the burner head 201 is connected and fixed to the furnace basin 105 by a connector. Specifically, multiple extension blocks 202 are evenly welded along the circumferential direction on the top side of the burner head 201. Fixed blocks 203 are vertically oppositely arranged on the upper surface of the extension blocks 202 and the upper surface of the flame hole 107. The upper and lower fixed blocks 203 are fixedly connected by a connecting rod 204. The extension blocks 202 and the flame hole 107 are fixed to the fixed blocks 203 by bolts.

[0029] An oil nozzle 205 is installed at the center of the top surface of the burner head 201. In this embodiment, the diameter of the oil outlet hole of the oil nozzle is 1.6mm-2.0mm. A limiting cylinder 206 is installed around the oil nozzle 205. The limiting cylinder 206 is welded and fixed to the burner head 201, and a gap is left between the inner wall of the limiting cylinder 206 and the oil nozzle 205. A combustion plate 207 is installed on the outer sleeve of the oil nozzle 205. The combustion plate 207 is directly opposite the flame hole 107. The bottom of the combustion plate 207 is fitted onto the limiting cylinder 206. The combustion plate 207 guides the mixture of gas and air to burn evenly, stably, and efficiently.

[0030] An ignition needle 212 is also provided on the top surface of the burner head 201. The ignition needle 212 is electrically connected to a high-voltage pulse generator (not shown in the figure). The ignition needle 212 is opposite to the top surface of the combustion plate 207. An electric spark is generated by the ignition needle 212 to ignite the fuel. The burner head 201 is connected to the fuel storage tank (not shown in the figure) through an oil pipe 208. An oil pump 209 is connected to the oil pipe 208. The oil pump 209 pressurizes the fuel (methanol), so that the fuel can enter the burner head 201 from the fuel storage tank and be sprayed out from the oil nozzle 205.

[0031] However, since methanol is a liquid fuel, it cannot be fully atomized by the fuel nozzle 205 alone, resulting in incomplete combustion. This leads to two problems: first, it wastes resources and the firepower cannot meet the needs of use; second, it generates toxic and harmful gases (such as carbon monoxide), endangering the life, health and safety of workers.

[0032] In this regard, the combustion mechanism 2 also includes a heater, which includes a tungsten rod 210 that is inserted into the side wall of the burner head 201. By energizing the tungsten rod 210, resistance heating is formed, causing its temperature to rise sharply, thereby heating the liquid methanol in the burner head 201, so that the methanol fuel is rapidly vaporized to form gaseous methanol. The gaseous methanol is sprayed out through the nozzle 205 to complete the combustion.

[0033] To achieve precise control of the heat output range (e.g., low, medium, high), in this embodiment, the combustion mechanism 2 also includes a microcontroller 211 (model STM32F030K6T6). The microcontroller 211 is equipped with a control panel located on the side of the stove body 1, allowing for user interaction. The oil pump 209, high-voltage pulse generator (model 20KV / 086-S), and heater 210 are electrically connected to the microcontroller 211. In operation, the heater 210 first heats and vaporizes the liquid methanol to form gaseous methanol. Then, the microcontroller 211 adjusts the flow rate of the oil pump 209, thereby achieving precise heat control. While ensuring complete combustion of the methanol fuel, the heat output can be adjusted according to actual usage needs, expanding the applicability of the methanol fuel combustion device.

[0034] To further ensure safe use, the combustion mechanism 2 also includes a temperature sensing wire 213 suspended outside the fuel nozzle 205. The temperature sensing wire 213 is electrically connected to the microcontroller 211. Its purpose is to prevent insufficient vaporization and methanol liquid overflow that could cause a safety accident.

[0035] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A methanol fuel combustion device, characterized in that, The device includes a stove body and a combustion mechanism located inside the stove body. The stove body panel has a circular mounting opening, and a burner basin is located below the mounting opening. A flame vent is located at the bottom of the burner basin. The combustion mechanism includes a burner head located directly below the flame vent, and the burner head is connected and fixed to the burner basin by a connector. An oil nozzle is located at the center of the top surface of the burner head, and a combustion plate is fitted over the oil nozzle. The combustion plate is directly opposite the flame vent. An ignition needle is also located on the top surface of the burner head, and the ignition needle is opposite the top surface of the combustion plate. The burner head is connected to the fuel storage tank by an oil pipe, and an oil pump is connected to the oil pipe to pressurize the fuel. The combustion mechanism also includes a heater, which includes a tungsten rod that is inserted and mated with the side wall of the burner head. The combustion mechanism also includes a microcontroller, which regulates the flow rate of the oil pump.

2. The methanol fuel combustion device according to claim 1, characterized in that, The stove body is hollow inside, and a horizontal support is set at the bottom. The support consists of multiple crisscrossing horizontal bars. The support is fixedly connected to the side wall of the stove body. A vertical bar is set at the intersection of the horizontal bars. The top of the vertical bar is fixedly connected to the panel of the stove body, and the bottom of the vertical bar is fixedly connected to the support bar.

3. The methanol fuel combustion device according to claim 2, characterized in that, The furnace basin has an upward-facing, flared opening, with its top outer wall fully in contact with the installation opening.

4. The methanol fuel combustion device according to claim 3, characterized in that, Multiple extension blocks are evenly spaced along the circumference on the top side of the burner head. Fixed blocks are vertically opposite each other on the upper surface of the extension blocks and the upper surface of the flame hole. The upper and lower fixed blocks are fixedly connected by a connecting rod. The extension blocks and the flame hole are fixed to the fixed blocks by bolts.

5. The methanol fuel combustion device according to claim 4, characterized in that, The microcontroller is equipped with a control panel, which is located on the side of the stove body, allowing users to interact with the system.

6. The methanol fuel combustion device according to claim 5, characterized in that, The combustion mechanism also includes a temperature sensing wire suspended outside the fuel injector, which is electrically connected to the microcontroller.

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