An electric preheating vaporization furnace

Abstract

The utility model relates to a kind of electric preheating vaporization furnace, it is related to vaporization furnace technical field, including electric preheating valve, the electric preheating valve includes valve main body, and valve main body is provided with fuel inlet passageway, electric preheating vaporization bin and fuel ejection passageway, fuel inlet passageway is communicated with fuel ejection passageway, electric preheating vaporization bin is located between fuel inlet passageway and fuel ejection passageway, electric preheating vaporization bin is equipped with electric heating tube A, fuel from fuel inlet passageway needs to pass through electric preheating vaporization bin and is preheated by electric heating tube A after can enter fuel ejection passageway, to play the role of electric preheating to fuel, and gaseous fuel after electric preheating vaporization is directly sprayed into combustor combustion, vaporization fuel path is very short, can effectively avoid fuel cooling and condensation, while can make vaporization furnace, start quickly, combustion is sufficient.

Description

Technical Field

[0001] This utility model belongs to the field of vaporization furnace technology, and in particular relates to an electric preheating vaporization furnace. Background Technology

[0002] Existing electric preheating gasification furnaces have high energy consumption and long preheating time during use, and cannot be used when the power is off. In addition, they have problems such as not being able to be used immediately after ignition, inaccurate flame control, easy blockage, high failure rate of electrical control system, and inconvenient maintenance, making them less convenient to use. Utility Model Content

[0003] To address the problems of existing electric preheating vaporizers, such as high power supply requirements, high energy consumption, long preheating time, inability to be used immediately, inaccurate flame control, easy clogging, high failure rate of electrical control system, and inconvenient maintenance, this utility model provides a novel vaporizer. This utility model pre-integrates electric heating tubes into the combustion valve assembly. After the fuel is vaporized under the action of the electric heating tubes, it is directly injected into the burner for combustion. It achieves on-demand use with lower voltage and power consumption, and has a simple structure that is easy to maintain. It can meet the needs of multiple scenarios, including home and outdoor use, and provides a better user experience.

[0004] The technical solution provided by this utility model is: an electric preheating vaporization furnace, including an electric preheating valve. The electric preheating valve includes a valve body, on which a fuel inlet passage, an electric preheating vaporization chamber, and a fuel injection passage are provided. The fuel inlet passage and the fuel injection passage are connected. The electric preheating vaporization chamber is located between the fuel inlet passage and the fuel injection passage. An electric heating tube A is installed in the electric preheating vaporization chamber. Fuel from the fuel inlet passage must pass through the electric preheating vaporization chamber and be preheated by the electric heating tube A before entering the fuel injection passage, thereby playing the role of electric preheating of the fuel. Furthermore, the gaseous fuel after electric preheating vaporization is directly injected into the burner. The vaporized fuel has a very short path, which can effectively avoid fuel cooling and condensation. At the same time, it can make the vaporization furnace start up quickly and burn completely.

[0005] A further technical solution is: a nozzle is installed at the upper end of the fuel injection passage. After being injected through the nozzle, the fuel immediately enters the burner for combustion. In order to avoid clogging of the gas outlet on the nozzle, a purging needle A is provided in the fuel injection passage. The up and down movement of the purging needle A achieves the unblocking of the gas outlet.

[0006] A further technical solution is: the valve body is equipped with a drive device for driving the needle A to move up and down.

[0007] The driving device can be an eccentric shaft, which is set on the valve body corresponding to the side wall of the needle A. The side wall of the needle A has a groove, and the end of the eccentric shaft extends into the groove, thereby realizing the up and down movement of the needle A by rotating the eccentric shaft.

[0008] The driving device can also be a gear, which is located on the side of the needle A. The side wall of the needle A is machined with teeth, and the gear meshes with the teeth, thereby driving the needle A to move up and down by rotating the gear.

[0009] The driving device can also be a magnet. A magnet is set at the lower end of the needle A. The rack A is driven to move up and down by the principle that the like poles of the external magnet and the magnet on the needle A repel each other and the unlike poles attract each other.

[0010] A further technical solution is that a valve core is installed in the fuel inlet passage to regulate the flow rate of fuel entering the electric preheating vaporization chamber.

[0011] A further technical solution is that the valve core is equipped with a needle B at one end near the electric preheating vaporization chamber to prevent fuel from clogging during the process of entering the electric preheating vaporization chamber.

[0012] A further technical solution is as follows: the gasification furnace further includes a primary electric preheating component, which includes an outer shell and an electric heating tube B. The electric heating tube B is inserted into the outer shell and has a gap between it and the outer shell. One end of the outer shell is provided with an inlet end and the other end is provided with an outlet end. Fuel enters the outer shell through the inlet end and is heated and vaporized in the gap between the outer shell and the electric heating tube B. The vaporized fuel flows out from the outlet end. The outlet end of the primary electric preheating component is connected to the fuel inlet passage, and the fuel enters the fuel inlet passage accordingly.

[0013] A further technical solution is: a vaporization pipe is provided between the outlet end of the primary electric preheating component and the fuel inlet passage. The vaporization pipe passes above the combustion flame, and the internal fuel temperature is higher after being heated by the flame.

[0014] A further technical solution is as follows: the vaporizer also includes a liquid supply component, which includes a fuel tank, a pressure regulating valve, a liquid delivery pump, and a flow stabilizing tank. A liquid delivery pipe is provided between the lower end of the fuel tank and the flow stabilizing tank, and a return liquid pipe is provided between the upper part of the flow stabilizing tank and the fuel tank. The liquid delivery pump is connected in series with the liquid delivery pipe, the pressure regulating valve is provided with the return liquid pipe, and the liquid outlet end of the flow stabilizing tank is connected to the inlet end of the outer shell of the primary electric preheating component.

[0015] A further technical solution is as follows: a three-way valve is installed on the liquid delivery pipe upstream of the liquid delivery pump, the liquid delivery pump is installed on one branch pipe of the three-way valve, and the other branch pipe of the three-way valve short-circuit the liquid delivery pump on the liquid delivery pipe, and an air pump is installed on the fuel tank.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model combines an electric heating element A with a valve to form an electric preheating valve, which is compact and lightweight. During use, the amount of liquid fuel entering the vaporization chamber can be precisely controlled by a flow regulating valve in the fuel inlet passage. The liquid fuel directly contacts the electric heating element after entering the vaporization chamber, achieving rapid vaporization and significantly reducing preheating time and energy consumption. The vaporized fuel is directly injected into the burner from the nozzle for combustion, bypassing other pipelines and avoiding the cooling and condensation that occurs when fuel vapor passes through pipelines. This utility model results in faster start-up and more complete combustion.

[0018] 2. This utility model places the electric preheating valve close to the burner, which not only allows for precise flame control through the flow valve, but also allows the waste heat from the burner to be transferred to the valve, further improving the valve's vaporization effect.

[0019] 3. The electric preheating valve is equipped with a cleaning needle A and a cleaning needle B. During use, the cleaning needle can be used to clean the valve regularly to effectively prevent carbon buildup inside the valve. Even if the nozzle is blocked due to carbon buildup or fuel impurities, the cleaning needle can be used to quickly clear the blockage.

[0020] 4. All components of the electric preheating valve are detachable and can be quickly replaced, facilitating maintenance.

[0021] 5. The primary electric preheating component in this invention serves as a primary preheating unit. When using fuels with high vaporization difficulty, it is activated to improve the fuel vaporization rate. After the fuel combustion stabilizes, it can be turned off to save energy.

[0022] 6. The liquid supply component in this invention can deliver fuel at a constant pressure, maintaining the stability of the fuel supply pressure. It also has both electric and manual operation options; when the power is sufficient, the liquid pump can be activated to deliver fuel; when the power is depleted, fuel can be manually delivered using an air pump.

[0023] 7. In order to avoid the serious pulsation problem during the liquid delivery process of the liquid delivery pump, this utility model sets a flow stabilizing tank downstream of the fuel tank. The upper part of the flow stabilizing tank contains gas. When the pulsating fuel liquid enters the flow stabilizing tank, the gas pressure at the upper part of the flow stabilizing tank can effectively buffer part of the pulsation, reduce the liquid pulsation flowing out of the flow stabilizing tank, and make the flow rate of the delivered liquid more stable.

[0024] 8. The liquid supply assembly of this utility model obtains a controllable output pressure through a simple structural design of a constant pressure valve and a liquid delivery pump connected in series. It is no longer necessary to equip the liquid delivery pump with a frequency converter to adjust the pumping pressure. Therefore, this utility model is more simplified in structure and more cost-effective.

[0025] 9. This new type of liquid delivery pipe is equipped with a three-way valve, which, together with the one-way valve and air pump on the fuel tank, allows for free switching between manual and electric control modes. Even when the power supply is exhausted, it can still be used normally as a traditional gasification furnace by increasing the air pressure with the air pump and using alcohol for preheating, greatly increasing its practicality. Attached Figure Description

[0026] Figure 1 This is a simplified structural diagram of the entire utility model.

[0027] Figure 2 This is a cross-sectional view of the primary electric preheating component of this utility model.

[0028] Figure 3 This is a cross-sectional view of the electric preheating valve of this utility model.

[0029] Figure 4 yes Figure 3 Cross-sectional view at point AA.

[0030] In the diagram: 1. Fuel tank; 2. Fuel inlet; 3. Check valve; 4. Air pump; 5. Pressure regulating valve; 6. Liquid delivery pipe; 7. Liquid return pipe; 8. Liquid delivery pump; 9. Three-way valve; 10. Flow stabilizer; 11. Primary electric preheating assembly; 12. Vaporization pipe; 13. Electric preheating valve; 1101. Outer shell; 1102. Electric heating element B; 1103. Inlet end; 1104. Outlet end; 1301. Fuel inlet passage; 1302. Electric preheating vaporization chamber; 1303. Electric heating element A; 1304. Fuel injection passage; 1305. Needle A; 1306. Nozzle; 1307. Eccentric shaft; 1308. Seal; 1309. Valve core; 1310. Valve core sleeve; 1311. Drain pipe; 1312. Valve body. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0032] like Figure 1-4As shown, this embodiment is an electric preheating vaporization furnace, the structure of which includes an electric preheating valve 13. The electric preheating valve 13 includes a valve body 1312, on which a fuel inlet passage 1301, an electric preheating vaporization chamber 1302, and a fuel injection passage 1304 are provided. The fuel inlet passage 1301 and the fuel injection passage 1304 are connected. The electric preheating vaporization chamber 1302 is located between the fuel inlet passage 1301 and the fuel injection passage 1304. An electric heating tube A1303 is installed in the electric preheating vaporization chamber 1302, which receives fuel from... Fuel entering passage 1301 must pass through the electric preheating vaporization chamber 1302 and be preheated by the electric heating tube A1303 before entering the fuel injection passage 1304, thus achieving the function of electric preheating of fuel. The vaporized fuel after electric preheating is directly injected into the burner for combustion (the burner is not shown in the attached diagram). The vaporized fuel has a very short path, which can effectively avoid fuel cooling and condensation, allowing the vaporizer to start up quickly and be used immediately, providing a better user experience. Furthermore, since the fuel is directly injected into the burner after vaporization, the temperature is high and there is less condensation, which is more conducive to complete combustion.

[0033] A nozzle 1306 is installed at the upper end of the fuel injection passage 1304. After being injected through the nozzle 1306, the fuel directly enters the burner. In order to avoid clogging of the air outlet on the nozzle 1306, a cleaning needle A1305 is provided in the fuel injection passage 1304. The up and down movement of the cleaning needle A1305 achieves the unblocking of the air outlet.

[0034] An eccentric shaft 1307 is provided on the valve body 1312 corresponding to the side wall of the needle A1305. The side wall of the needle A1305 has a groove, and the end of the eccentric shaft 1307 extends into the groove. The needle A1305 can be moved up and down by rotating the eccentric shaft 1307.

[0035] In addition to being driven by the eccentric shaft 1307, the needle A1305 can also be driven by a magnet installed at the bottom of the needle A1305. The needle A1305 can be driven by the principle of like poles repelling and unlike poles attracting on the bottom magnet of the needle A1305 by the external magnet.

[0036] A gear can also be installed on the side of the needle A1305. The side wall of the needle A1305 is machined with teeth. The meshing of the gear and teeth allows the needle A1305 to move up and down by rotating the gear.

[0037] like Figure 3 As shown, a valve core 1309 is provided in the fuel inlet passage 1301 to regulate the flow rate of fuel entering the electric preheating vaporization chamber 1302. Specifically, the valve core 1309 is threadedly connected to the inner wall of the fuel inlet passage 1301 (e.g., ...). Figure 4 As shown, Figure 4This is a cross-sectional view of the valve core. The threaded section of the valve core 1309 is not cylindrical, but has a cross-section. Liquid can flow between the cross-section and the fuel inlet passage 1301. The front end of the valve core 1309 is machined with a conical surface. By rotating the valve core 1309, the gap between the conical surface and the fuel inlet passage 1301 can be adjusted, thereby adjusting the fuel flow rate.

[0038] The valve core 1309 is provided with a needle B at one end near the electric preheating vaporization chamber 1302 to prevent fuel from clogging during the process of entering the electric preheating vaporization chamber 1302.

[0039] A valve core sleeve 1310 is threaded onto the fuel inlet passage 1301 at the end away from the electric preheating vaporization chamber 1302. A gap must be left between the valve core sleeve 1310 and the valve core 1309. A sealing element 1308 is provided between the valve core 1309 and the valve core sleeve 1310 at the end away from the needle B. The valve core sleeve 1310 is also bypassed by a drain pipe 1311. The liquid flowing into the drain pipe 1311 enters the gap between the valve core sleeve 1310 and the valve core 1309, and if it continues to flow, it enters the fuel inlet passage 1301.

[0040] The vaporizer also includes a primary electric preheating component 11, which includes an outer shell 1101 and an electric heating tube B1102. The electric heating tube B1102 is inserted into the outer shell 1101 and has a gap between it and the outer shell 1101. One end of the outer shell 1101 is provided with an inlet end and the other end is provided with an outlet end 1104. Fuel enters the outer shell 1101 through the inlet end and is heated and vaporized in the gap between the outer shell 1101 and the electric heating tube B1102. The vaporized fuel flows out from the outlet end 1104. The outlet end 1104 of the primary electric preheating component 11 is connected to the fuel inlet passage 1301, and the fuel enters the fuel inlet passage 1301 accordingly.

[0041] A vaporization pipe 12 is provided between the outlet end 1104 of the primary electric preheating component 11 and the fuel inlet passage 1301. More specifically, in this embodiment, the two ends of the vaporization pipe 12 are connected via quick connectors between the outlet end 1104 of the primary electric preheating component 11 and the drain pipe 1311 of the valve core sleeve 1310 (indirectly equivalent to being connected to the fuel inlet passage 1301). The vaporization pipe 12 passes above the combustion flame, and after being heated by the flame, the internal fuel temperature is higher, resulting in better vaporization.

[0042] As a further technical solution, the vaporizer also includes a liquid supply assembly, which includes a fuel tank 1, a pressure regulating valve 5, a liquid delivery pump 8, and a flow stabilizing tank 10. A liquid delivery pipe 6 is provided between the lower end of the fuel tank 1 and the flow stabilizing tank 10, and a liquid return pipe 7 is provided between the upper part of the flow stabilizing tank 10 and the fuel tank 1. The liquid delivery pump 8 is connected in series with the liquid delivery pipe 6, the pressure regulating valve 5 is provided on the liquid return pipe 7, and the liquid outlet end of the flow stabilizing tank 10 is connected to the inlet end 1103 of the outer shell 1101 of the primary electric preheating assembly 11. Assuming the pumping pressure of the liquid delivery pump 8 is 0.3 MPa, and we need to maintain the hydraulic pressure in the liquid delivery pipe 6 below 0.2 MPa, we can use a constant pressure valve 5 with a constant pressure opening value of 0.2 MPa. The excess 0.1 MPa pressure is released through the constant pressure valve, thus achieving a hydraulic pressure of 0.2 MPa in the liquid delivery pipe 6. This eliminates the need for a separate frequency converter for the liquid delivery pump 8 to adjust the pumping pressure. The simple structural design of the liquid supply assembly in this embodiment, with the constant pressure valve 5 connected in series with the liquid delivery pump 8, not only facilitates obtaining a controllable output hydraulic pressure but also avoids damage to the liquid delivery pump due to overload and the risks of leakage and rupture caused by pipeline overpressure. In addition, the upper part of the flow stabilizing tank 10 contains gas. When the pulsed fuel liquid delivered by the liquid delivery pump 8 enters the flow stabilizing tank 10, the gas pressure in the upper part of the flow stabilizing tank 10 can effectively buffer part of the pulse, significantly reducing the liquid pulse flowing out of the flow stabilizing tank 10 and making the flow rate of the liquid delivered by the flow stabilizing tank 10 more stable.

[0043] The aforementioned liquid delivery pump 8 requires electrical energy. When the electrical energy is depleted, the device can also manually output hydraulic pressure. Specifically, based on the above structure, a three-way valve 9 is installed on the liquid delivery pipe 6 upstream of the liquid delivery pump 8. The liquid delivery pump 8 is installed on one branch of the three-way valve 9, and the other branch of the three-way valve 9 short-circuit the liquid delivery pump 8 to the liquid delivery pipe 6. An air pump 4 is installed on the fuel tank 1. The air pump 4 replenishes the air pressure in the fuel tank 1. Under the action of air pressure, the fuel in the tank is forced into the liquid delivery pipe 6. By manually turning the three-way valve 9, one branch connected to the liquid delivery pump 8 is closed, and the other branch is opened. In this way, the liquid bypasses the liquid delivery pump 8 and directly enters the flow stabilizing tank 10. It should be noted that at this time, the pressure on both sides of the pressure regulating valve 5 is balanced, and it does not perform the function of regulating the output of liquid pressure.

[0044] In addition, fuel tank 1 is equipped with at least a one-way valve 3 and a fuel inlet 2. The one-way valve 3 only allows gas to enter fuel tank 1. It mainly works in conjunction with the liquid delivery pump 8. After the liquid delivery pump 8 extracts liquid fuel from fuel tank 1, the pressure inside the fuel tank decreases, allowing outside gas to enter through the one-way valve 3, thus maintaining a consistent pressure inside and outside fuel tank 1. The fuel inlet 2 is used to refill fuel tank 1.

[0045] In this embodiment, the heating element A1303, the heating element B1102, and the liquid delivery pump 8 can be powered by a storage battery or by 220V AC mains power.

[0046] The working process for this application is as follows:

[0047] First, energize heating element A1303 and heating element B1102, and turn on liquid delivery pump 8.

[0048] Liquid fuel in fuel tank 1 is sent to flow stabilizing tank 10 by liquid delivery pump 8. The fuel liquid with smaller pulses flowing out of flow stabilizing tank 10 enters the inlet end of the outer shell 1101 of primary electric preheating component 11. After being preheated by electric heating tube B1102, most of the liquid fuel is vaporized and then enters vaporization tube 12. Subsequently, it enters fuel inlet passage 1301 through guide tube 1311. The flow rate is regulated by valve core 1309. The fuel enters electric preheating vaporization chamber 1302. In electric preheating vaporization chamber 1302, because the gap between electric heating tube A1303 and electric preheating vaporization chamber 1302 is very small (less than 1 mm), electric heating tube A1303 applies heat to less fuel, so that the fuel can be vaporized quickly and efficiently in a very short time, so that it can be used on demand. Once the gasifier is burning normally, because the gasification tube 12 is located above the flame, the fuel passing through the gasification tube 12 is rapidly and efficiently vaporized under the high temperature of the flame. Therefore, depending on the ease of fuel vaporization, one or two heating elements can be selectively shut off to save energy while ensuring sufficient vaporization. Furthermore, in actual use, one or more heating elements can be installed depending on the properties of the fuel.

Claims

1. An electric preheating vaporization furnace, characterized in that: The device includes an electric preheating valve (13), which includes a valve body (1312). The valve body (1312) is provided with a fuel inlet passage (1301), an electric preheating vaporization chamber (1302), and a fuel injection passage (1304). The fuel inlet passage (1301) is connected to the fuel injection passage (1304). The electric preheating vaporization chamber (1302) is located between the fuel inlet passage (1301) and the fuel injection passage (1304). An electric heating tube A (1303) is installed in the electric preheating vaporization chamber (1302). The fuel from the fuel inlet passage (1301) must pass through the electric preheating vaporization chamber (1302) and be preheated by the electric heating tube A (1303) before entering the fuel injection passage (1304).

2. The electric preheating vaporization furnace according to claim 1, characterized in that: A nozzle (1306) is installed at the upper end of the fuel injection passage (1304), and a needle A (1305) is provided inside the fuel injection passage (1304).

3. The electric preheating vaporization furnace according to claim 2, characterized in that: The valve body (1312) is provided with a drive device for driving the needle A (1305) to move up and down.

4. The electric preheating vaporization furnace according to claim 1, characterized in that: A valve core (1309) is provided in the fuel inlet passage (1301) to regulate the flow rate of fuel entering the electric preheating vaporization chamber (1302).

5. An electric preheating vaporization furnace according to claim 4, characterized in that: The valve core (1309) is equipped with a needle B at one end near the electric preheating vaporization chamber (1302) to prevent fuel from getting clogged during the process of entering the electric preheating vaporization chamber (1302).

6. The electric preheating vaporization furnace according to claim 1, characterized in that: The gasification furnace also includes a primary electric preheating component (11), which includes an outer shell (1101) and an electric heating tube B (1102). The electric heating tube B (1102) is inserted into the outer shell (1101) and has a gap between it and the outer shell (1101). One end of the outer shell (1101) is provided with an inlet end and the other end is provided with an outlet end (1104). The outlet end (1104) of the primary electric preheating component (11) is connected to the fuel inlet passage (1301).

7. An electric preheating vaporization furnace according to claim 6, characterized in that: A vaporization pipe (12) is provided between the outlet end (1104) of the primary electric preheating component (11) and the fuel inlet passage (1301). The vaporization pipe (12) passes above the combustion flame and is heated by the flame.

8. An electric preheating vaporization furnace according to claim 6, characterized in that: The vaporizer also includes a liquid supply assembly, which includes a fuel tank (1), a pressure regulating valve (5), a liquid delivery pump (8), and a flow stabilizer (10). A liquid delivery pipe (6) is provided between the lower end of the fuel tank (1) and the flow stabilizer (10). A return liquid pipe (7) is also provided between the upper part of the flow stabilizer (10) and the fuel tank (1). The liquid delivery pump (8) is connected in series with the liquid delivery pipe (6). The pressure regulating valve (5) is provided on the return liquid pipe (7). The liquid outlet of the flow stabilizer (10) is connected to the inlet end (1103) of the outer shell (1101) of the primary electric preheating assembly (11).

9. An electric preheating vaporization furnace according to claim 8, characterized in that: A three-way valve (9) is installed on the liquid delivery pipe (6) upstream of the liquid delivery pump (8). The liquid delivery pump (8) is installed on one of the branches of the three-way valve (9). The other branch of the three-way valve (9) connects the liquid delivery pump (8) to the liquid delivery pipe (6) via a short circuit. An air pump (4) is installed on the fuel tank (1).

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