Oil-water mixed liquid combustion nozzle

Abstract

The utility model provides an oil-water mixed liquid combustion nozzle, and belongs to the technical field of combustors. The problem that an existing combustion nozzle is not high in oil-water mixed liquid ignition success rate is solved. The oil-water mixed liquid combustion spray head comprises an atomizing nozzle and an igniter, and further comprises a barrel-shaped ignition barrel, the outlet end of the atomizing nozzle is inserted into the inlet end of the ignition barrel, the outer side of the inlet end of the ignition barrel is sleeved with a heating coil, and the ignition end of the igniter is inserted into the side wall of the ignition barrel and located in front of the heating coil. The oil-water mixed liquid combustion nozzle improves the success rate of ignition of oil-water mixed liquid.

Description

Technical Field

[0001] This utility model belongs to the field of burner technology and relates to an oil-water mixture combustion nozzle. Background Technology

[0002] An oil-water mixture is formed by mixing a certain proportion of water into oil and stirring thoroughly. One characteristic of oil-water mixtures is that they are not easily ignited, making them relatively safe for storage, transportation, and use.

[0003] Various attempts have been made to ignite and utilize oil-water mixtures. For example, a household gas heater disclosed in Chinese patent literature [announcement number: CN2196258Y] consists of a furnace frame, pipes, valves, a vaporization pipe, an air pressurization device, a pressure limiting device, an infrared furnace plate, an electronic igniter, an oil tank, and a water tank. A small gasoline tank is fixed inside the water tank. The water and oil in the water tank and oil tank, as well as the gasoline in the small gasoline tank, are vaporized after being pressurized by air pressurization. The gasoline is then sprayed out through the vaporization pipe onto the infrared furnace plate and ignited by the electronic igniter.

[0004] Atomized droplets can increase the contact surface area between the oil and the air. When the atomized droplets are small enough, the oil-water mixture can be ignited. However, there is a problem with the uniformity of atomized particle size, meaning that the atomized particles vary in size, and the atomized droplets are still an oil-water mixture, resulting in a low success rate of ignition. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing an oil-water mixture combustion nozzle, which solves the technical problem of how to improve the success rate of oil-water mixture ignition.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] An oil-water mixture combustion nozzle includes an atomizing nozzle and an igniter, characterized in that it further includes a cylindrical ignition tube, the outlet end of the atomizing nozzle is inserted into the inlet end of the ignition tube, a heating coil is fitted on the outer side of the inlet end of the ignition tube, and the ignition end of the igniter is inserted into the side wall of the ignition tube and located in front of the heating coil.

[0008] "Forward" refers to the direction from the inlet to the outlet of the ignition tube. During ignition, the heating coil is first energized to heat the inlet of the ignition tube. Then, an oil-water mixture is introduced into the atomizing nozzle and sprayed into the inlet of the ignition tube. The atomized oil-water mixture is heated upon entering the inlet and then ignited by the igniter. The flame then exits from the outlet of the ignition tube. Heating the atomized oil-water mixture before ignition not only heats the oil, making it easier to ignite, but also evaporates the water in the mixture, reducing interference with ignition and significantly increasing the success rate of ignition after atomization. In other words, this oil-water mixture combustion nozzle improves the success rate of oil-water mixture ignition.

[0009] In the aforementioned oil-water mixture combustion nozzle, the ignition tube has a stepped structure with a diameter that increases from back to front, located between the heating coil and the ignition end of the igniter. A vent hole is provided on the ignition tube at the stepped structure.

[0010] The diameter of the ignition tube increases from back to front at the stepped structure, creating a sudden change in the flow area. This generates a negative pressure effect at the stepped structure, allowing outside air to enter the ignition tube through the vent. This ensures that the atomized and heated oil-water mixture has sufficient oxygen for smooth ignition and complete combustion.

[0011] In the aforementioned oil-water mixture combustion nozzle, the ignition tube outlet end narrows from back to front. This increases the airflow velocity at the ignition tube outlet end, thereby allowing the combustion flame to be ejected rapidly.

[0012] In the aforementioned oil-water mixture combustion nozzle, a cylindrical protective sleeve is fitted around the outside of the ignition tube. An annular gap exists between the inner side of the protective sleeve and the outer side of the ignition tube. An end cap is fixed to the inlet end of the protective sleeve, and an air inlet connector is fixed to the end cap.

[0013] The air inlet connector connects to the air pipe, which in turn connects to the air compressor. Compressed air is introduced into the annular gap through the air inlet connector. This compressed air not only enters the ignition tube through the vent hole, aiding in ignition and complete combustion, but also flows rapidly from back to front in the annular gap, providing ventilation, cooling, and heat insulation. This prevents the protective cylinder from overheating, thus protecting the user from burns.

[0014] In the aforementioned oil-water mixture combustion nozzle, the outlet end of the protective cylinder narrows from back to front. This increases the airflow velocity at the outlet end of the protective cylinder, thereby allowing the combustion flame to be ejected more rapidly.

[0015] In the aforementioned oil-water mixture combustion nozzle, the outlet of the protective cylinder is located in front of the ignition cylinder outlet. This allows the hot air flowing from the annular gap to fully mix with the flame ejected from the ignition cylinder, not only ensuring more complete fuel combustion and preventing fuel waste, but also fully utilizing the heat absorbed by the air in the annular gap, improving thermal efficiency and reducing energy waste.

[0016] In the aforementioned oil-water mixture combustion nozzle, a protruding retaining ring is provided on the outer side of the ignition tube in front of the ignition end of the igniter. A shoulder is provided on the inner side of the protective tube. A positioning screw is threaded through and connected to the side wall of the protective tube behind the shoulder. The retaining ring is axially fixed between the shoulder and the positioning screw, and the end of the positioning screw abuts against the outer side of the protective tube. Several air passages are provided on the retaining ring.

[0017] During assembly, the ignition tube is inserted into the protective tube from the rear, with the retaining ring resting against the shoulder. Then, the positioning screw is tightened to fix the retaining ring between the shoulder and the positioning screw. Simultaneously, the end of the positioning screw rests against the outer surface of the ignition tube, ensuring circumferential fixation. Assembly is convenient and the structure is stable. The vent hole ensures the flow of compressed air and guarantees the heat insulation protection of the annular gap.

[0018] In the aforementioned oil-water mixture combustion nozzle, a fixing sleeve is fixedly connected to the outer end face of the end cap. The atomizing nozzle passes through and is fixedly connected to the fixing sleeve. A vent hole is provided on the side wall of the fixing sleeve. The fixing sleeve is used to fix the atomizing nozzle and facilitates the installation of the atomizing nozzle. The vent hole is used to protect the flow of gas inside and outside the cylinder.

[0019] In the aforementioned oil-water mixture combustion nozzle, a thermocouple is also fixedly connected to the end cap. The measuring end of the thermocouple is inserted into the protective cylinder and located between the inlet end of the ignition cylinder and the heating coil, with the measuring end of the thermocouple close to the inlet end of the ignition cylinder. The thermocouple is generally equipped with a temperature display and is used to measure the temperature of the ignition cylinder, i.e., the combustion temperature, facilitating the understanding of the flame intensity.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] A heating coil is incorporated to preheat the atomized oil-water mixture before ignition, improving the ignition success rate. A protective sleeve and air inlet connector enhance safety during use. This nozzle, when used with oil-water mixtures, is safe and reliable, boasting a high ignition success rate and high combustion efficiency, thus reducing energy costs. Furthermore, it can be manufactured in various specifications for different applications, such as factories and restaurants. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the oil-water mixture combustion nozzle.

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the protective cylinder, end cap, and fixing sleeve in the oil-water mixture combustion nozzle.

[0024] Figure 3 This is a cross-sectional structural diagram of the oil-water mixture combustion nozzle.

[0025] Figure 4 This is a schematic diagram illustrating the control principle of the oil-water mixture combustion nozzle.

[0026] In the diagram, 1. Atomizing nozzle; 1a. Oil inlet connector; 1b. Air connector; 2. Igniter; 3. Igniter tube; 3a. Vent hole; 3b. Retaining ring; 3c. Air passage hole; 4. Protective sleeve; 4a. Shoulder; 4b. Positioning screw; 5. End cap; 6. Fixing sleeve; 6a. Vent hole; 7. Annular gap; 8. Air inlet connector; 9. Heating coil; 9a. Coil fixing connector; 10. Thermocouple; 11. Air source; 12. Air regulating valve; 13. Oil tank; 14. Oil quantity regulating valve; 15. Heating start switch; 16. Ignition switch; 17. Power supply; 18. T-connector. Detailed Implementation

[0027] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0028] like Figure 1 and Figure 2As shown, an oil-water mixture combustion nozzle includes an atomizing nozzle 1, an igniter 2, and a cylindrical ignition tube 3 and a protective tube 4. The protective tube 4 is fitted onto the outside of the ignition tube 3. An end cap 5 is fixed to the inlet end of the protective tube 4 by screws, and a fixing sleeve 6 is fixed to the center of the outer end face of the end cap 5. The fixing sleeve 6 can be integrally formed on the end cap 5 or fixed to the end cap 5 by welding. The outer surface of the fixing sleeve 6 is hexagonal, and the inner surface of the fixing sleeve 6 has internal threads. The atomizing nozzle 1 passes through and is threaded onto the fixing sleeve 6. Tightening the atomizing nozzle 1 fixes the atomizing nozzle 1 to the fixing sleeve 6. The atomizing nozzle 1 is an existing structure, also known as a fuel atomizing nozzle 1, and can be purchased directly from the market. The atomizing nozzle 1 preferably has two inlet ends and one outlet end, resulting in small atomized particles and high uniformity. One inlet end of the atomizing nozzle 1 is equipped with a fuel inlet connector 1a for connecting to fuel, and the other inlet end of the atomizing nozzle 1 is equipped with an air connector 1b for connecting to compressed air. The outlet end of the atomizing nozzle 1 is inserted into the inlet end of the ignition tube 3. Six vent holes 6a are provided on the side wall of the fixing sleeve 6, and the number of vent holes 6a can be increased or decreased as appropriate. An air inlet connector 8 and a thermocouple 10 are also fixedly connected to the end cap 5. The air inlet connector 8 connects to compressed air, and the measuring end of the thermocouple 10 is inserted into the protective cylinder 4 and located between the inlet end of the ignition tube 3 and the heating coil 9, with the measuring end of the thermocouple 10 close to the inlet end of the ignition tube 3.

[0029] like Figure 2 and Figure 3As shown, there is an annular gap 7 between the inner side of the protective cylinder 4 and the outer side of the ignition cylinder 3. A heating coil 9 is fitted onto the outer side of the inlet end of the ignition cylinder 3, and a coil fixing connector 9a is fixed to the end cap 5. One end of the heating coil 9 passes through and is fixed in the coil fixing connector 9a. There are two igniters 2, which are fixed to the outer side of the protective cylinder 4. The ignition end of the igniter 2 passes through the side wall of the protective cylinder 4 and is inserted into the side wall of the ignition cylinder 3. The ignition end of the igniter 2 is located in front of the heating coil 9. There is a stepped structure on the ignition cylinder 3 between the heating coil 9 and the ignition end of the igniter 2, with the diameter increasing from back to front. Several vent holes 3a are arranged circumferentially at the stepped structure on the ignition cylinder 3. The outer surface of the ignition tube 3 has a protruding retaining ring 3b in front of the ignition end of the igniter 2. A shoulder 4a is provided on the inner surface of the protective tube 4. A positioning screw 4b is threaded through and connected to the side wall of the protective tube 4 behind the shoulder 4a. The retaining ring 3b is axially fixed between the shoulder 4a and the positioning screw 4b, with the end of the positioning screw 4b abutting against the outer surface of the protective tube 4. Several positioning screws 4b are arranged sequentially along the circumference of the protective tube 4, such as three or four. The retaining ring 3b has several through-holes 3c arranged sequentially along the circumference. The outlet of the protective tube 4 is located in front of the outlet of the ignition tube 3. The outlet end of the ignition tube 3 tapers from back to front, and the outlet end of the protective tube 4 also tapers from back to front. To facilitate the forming of the ignition tube 3, it is machined in two parts and then welded together. The weld is located in front of the retaining ring 3b. A fixing plate is also fixed on the outer side of the protective cylinder 4, which fixes the protective cylinder 4 to the base or clamp.

[0030] like Figure 4As shown, the air source 11, such as the outlet pipe of an air compressor, is connected to the air regulating valve 12. The air regulating valve 12 is used to regulate the total flow of compressed air. The outlet end of the air regulating valve 12 is connected to a three-way connector 18. The two outlet ends of the three-way connector 18 are connected to the air inlet connector 8 on the end cover 5 and the air inlet connector 1b of the atomizing nozzle 1 via air pipes. Both air pipes can also be connected to a pressure regulating valve and a solenoid valve. The pressure regulating valve facilitates air pressure regulation, and the solenoid valve automatically shuts off when the power is off. The oil-water mixture is stored in an oil tank 13. The oil outlet pipe of the oil tank 13 is connected to the oil quantity regulating valve 14. The oil outlet end of the oil quantity regulating valve 14 is connected to the oil inlet connector 1a of the atomizing nozzle 1 via an oil pipe. A heating start switch 15 is installed between the power supply 17 and the heating coil 9, and an ignition switch 16 is installed between the power supply 17 and the igniter 2. Thermocouple 10 is also connected to the power supply 17 for temperature measurement. A temperature display can also be installed to show the temperature measured by the thermocouple 10. Thermocouple 10 and temperature display can be purchased as a set. The control system can be installed in a control box, and the air regulating valve 12, oil quantity regulating valve 14, heating start switch 15, ignition switch 16, and temperature display are installed on the door of the control box. The tee connector 18, pressure regulating valve, and solenoid valve are fixed inside the control box.

[0031] During ignition, the heating coil 9 is first energized to heat the inlet end of the ignition tube 3. Then, a mixture of oil and water and compressed air are introduced into the atomizing nozzle 1 and sprayed into the inlet end of the ignition tube 3, where the atomized mixture is heated. After heating, it is ignited by the igniter 2, and then the flame is ejected from the outlet end of the ignition tube 3. The ratio of air to oil and water mixture can be adjusted by regulating the opening of the three-way valve 12 and the fuel quantity regulating valve 14, thereby adjusting the flame intensity. The atomized mixture is heated before ignition, which not only heats the oil, making it easier to ignite, but also evaporates the water in the mixture, reducing the interference of water on ignition. This greatly improves the success rate of ignition of the mixture after atomization and ensures complete combustion of the fuel.

[0032] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. An oil-water mixture combustion nozzle, comprising an atomizing nozzle (1) and an igniter (2), characterized in that, It also includes a cylindrical ignition tube (3), the outlet end of the atomizing nozzle (1) is inserted into the inlet end of the ignition tube (3), a heating coil (9) is fitted on the outside of the inlet end of the ignition tube (3), and the ignition end of the igniter (2) is inserted on the side wall of the ignition tube (3) and located in front of the heating coil (9).

2. The oil-water mixture combustion nozzle according to claim 1, characterized in that, The ignition tube (3) has a stepped structure with a diameter that increases from back to front between the heating coil (9) and the ignition end of the igniter (2), and a vent hole (3a) is provided on the ignition tube (3) at the stepped structure.

3. The oil-water mixture combustion nozzle according to claim 1, characterized in that, The outlet end of the ignition tube (3) narrows from back to front.

4. The oil-water mixture combustion nozzle according to any one of claims 1-3, characterized in that, The outer side of the ignition tube (3) is fitted with a cylindrical protective tube (4). There is an annular gap (7) between the inner side of the protective tube (4) and the outer side of the ignition tube (3). An end cap (5) is fixed on the inlet end of the protective tube (4), and an air inlet connector (8) is fixed on the end cap (5).

5. The oil-water mixture combustion nozzle according to claim 4, characterized in that, The outlet end of the protective cylinder (4) narrows from back to front.

6. The oil-water mixture combustion nozzle according to claim 4, characterized in that, The outlet of the protective cylinder (4) is located in front of the outlet of the ignition cylinder (3).

7. The oil-water mixture combustion nozzle according to claim 4, characterized in that, The outer side of the ignition tube (3) has a protruding retaining ring (3b) in front of the ignition end of the igniter (2). The inner side of the protective tube (4) is provided with a shoulder (4a). A positioning screw (4b) is threaded through and connected to the side wall of the protective tube (4) behind the shoulder (4a). The retaining ring (3b) is axially fixed between the shoulder (4a) and the positioning screw (4b), and the end of the positioning screw (4b) abuts against the outer side of the protective tube (4). The retaining ring (3b) has several air holes (3c) that pass through from front to back.

8. The oil-water mixture combustion nozzle according to claim 4, characterized in that, A fixing sleeve (6) is fixedly connected to the outer end face of the end cap (5), and the atomizing nozzle (1) is inserted through and fixedly connected to the fixing sleeve (6). A vent hole (6a) is provided on the side wall of the fixing sleeve (6).

9. The oil-water mixture combustion nozzle according to claim 4, characterized in that, A thermocouple (10) is also fixedly connected to the end cap (5). The measuring end of the thermocouple (10) is inserted into the protective cylinder (4) and located between the inlet end of the ignition cylinder (3) and the heating coil (9), and the measuring end of the thermocouple (10) is close to the inlet end of the ignition cylinder (3).

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