CN207688123U - A kind of secondary air atomizing fuel nozzle - Google Patents

Abstract

The utility model discloses a two-stage air atomization fuel nozzle, which comprises a main body pipe, an oil inlet pipe is arranged inside the main body pipe, an oil channel is arranged inside the oil inlet pipe, and a Air intake passage, the inside of the main body tube is provided with a heat dissipation cavity, a heat dissipation hole is provided between the heat dissipation cavity and the main body tube, a protective head is provided at one end of the main body tube, and a gas gathering chamber is provided inside the protective head. A fixed block is arranged between the protective head and the inner wall of the main pipe. In the utility model, by setting the gas gathering chamber, the through hole and the second shunt pipe, the oil is transported to the inside of the vortex cavity through the oil channel, the compressed air is supplied from the air intake channel, and the vortex cavity and the oil are formed through the through hole to form a high-speed rotating vortex. The compressed air is gathered into the gas gathering chamber through the first diverter pipe, and then enters the mixing chamber through the second diverter pipe to mix with a round of atomized oil, and is discharged from the nozzle in the form of droplets through the nozzle on the protective sheet to achieve a strong mist effect.

Description

A two-stage air atomizing fuel nozzle

technical field

The utility model relates to the field of heating equipment accessories, in particular to a secondary air atomization fuel nozzle.

Background technique

With the extensive use of fuel oil heating equipment in industry, energy problems have become increasingly prominent. The nozzle is one of the core components of the burner. Its main function is to inject liquid into the gas medium, disperse it and break it into small droplets. Its atomization performance directly affects the evaporation rate and combustion stability. Fuel atomizing nozzles not only provide gas-liquid mixture to achieve atomization, but also spray oil beams to form a flow field that matches the furnace structure to ensure uniform temperature distribution, improve combustion efficiency, and save energy. Generally, the nozzles of small burners only use single-stage atomization, and the atomization intensity is low. Some of the droplet size is too large or the atomization cone angle is too large, and the droplets are sprayed on the head of the flame tube and the wall of the combustion chamber. Local overheating and ablation are caused. On the other hand, the temperature of the existing chemical fuel nozzles tends to increase during use, which reduces the strength of the device. If the temperature cannot be lowered in time, the device may even burst, endangering the user's life. Safety.

Therefore, it is necessary to invent a two-stage air atomizing fuel nozzle to solve the above problems.

Utility model content

The purpose of this utility model is to provide a two-stage air atomizing fuel nozzle to solve the problems raised in the above-mentioned background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: a two-stage air atomization fuel nozzle, including a main pipe, an oil inlet pipe is arranged inside the main pipe, an oil channel is arranged inside the oil inlet pipe, and an oil passage is arranged inside the inlet pipe. An air intake passage is provided between the oil pipe and the main pipe, and a heat dissipation chamber is provided inside the main pipe, and a heat dissipation hole is provided between the heat dissipation chamber and the main pipe, and a protective head is provided at one end of the main pipe, and the protective head There is a gas gathering chamber inside, a fixed block is set between the protective head and the inner wall of the main pipe, a first shunt pipe is provided on one side of the gas gathering chamber, an oil spray head is provided at one end of the oil inlet pipe, and the spray nozzle There is a vortex cavity inside the oil head, a through hole is set between the vortex cavity and the air intake channel, a spacer is set between the oil spray head and the protective head, and a mixing bin is set at one end of the vortex cavity , A second shunt pipe is provided between the mixing bin and the gas gathering bin, a protective sheet is provided on one side of the mixing bin, and a spout is provided on the protective sheet.

Preferably, a groove is provided at the joint between the main body tube and the fixing block, the groove is adapted to the fixing block, and the main body tube is buckled with the protective head.

Preferably, the number of the heat dissipation holes is multiple, and the plurality of heat dissipation holes pass through the main pipe and are connected to the heat dissipation cavity.

Preferably, one end of the protection head is provided with a limit groove, the limit groove is adapted to the protection sheet, and the protection sheet is arranged in an arc shape.

Preferably, the protective head is made of high temperature resistant ceramic material, and the protective sheet is made of tungsten steel material.

Preferably, both the first distribution pipe and the second distribution pipe are connected to the gas gathering chamber.

The technical effects and advantages of the utility model: the utility model is provided with the gas gathering chamber, the through hole and the second shunt pipe, the oil is transported to the inside of the vortex cavity through the oil channel, the compressed air is supplied from the intake channel, and the vortex is carried out through the through hole The cavity and the oil material form a high-speed rotating vortex, and part of the compressed air is gathered into the gas gathering chamber through the first diverter pipe, and then enters the mixing chamber through the second diverter pipe to mix with a round of atomized oil material, and the air that passes through the nozzle on the protective sheet is formed by a droplet The nozzle is discharged to achieve a strong atomization effect. By setting the heat dissipation cavity and the heat dissipation hole, during the use of the nozzle, the compressed air circulates inside the first shunt pipe and the second shunt pipe, which can take away the heat generated by the part of the device. , Part of the heat accumulated inside the heat dissipation chamber exchanges heat with the outside through the heat dissipation holes, so as to increase the safety of the nozzle.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is the structural representation of the protective sheet of the present utility model;

In the figure: 1 main pipe, 2 oil inlet pipe, 3 oil passage, 4 air intake passage, 5 heat dissipation cavity, 6 heat dissipation hole, 7 protective head, 8 gas gathering chamber, 9 fixed block, 10 first distribution pipe, 11 fuel injection Head, 12 vortex chambers, 13 through holes, 14 pads, 15 mixing bins, 16 second shunt pipes, 17 protective sheets, 18 spouts.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The utility model provides a secondary air atomizing fuel nozzle as shown in Figure 1-2, comprising a main body pipe 1, an oil inlet pipe 2 is arranged inside the main body pipe 1, and an oil passage is arranged inside the oil inlet pipe 2 3. There is an air intake channel 4 between the oil inlet pipe 2 and the main pipe 1, a heat dissipation chamber 5 is provided inside the main pipe 1, and a heat dissipation hole 6 is provided between the heat dissipation chamber 5 and the main pipe 1. One end of the main body pipe 1 is provided with a protective head 7, and the inside of the protective head 7 is provided with a gas gathering chamber 8, and a fixed block 9 is provided between the protective head 7 and the inner wall of the main pipe 1, and one side of the gas gathering chamber 8 A first shunt pipe 10 is provided, and an oil injection head 11 is provided at one end of the oil inlet pipe 2, and a vortex chamber 12 is provided inside the oil injection head 11, and a through hole is provided between the vortex chamber 12 and the air intake passage 4 13. A spacer 14 is provided between the fuel injection head 11 and the protective head 7, a mixing bin 15 is provided at one end of the vortex chamber 12, and a mixing bin 15 and the gas gathering bin 8 are provided The second branch pipe 16, by setting the cooling chamber 5 and the heat dissipation hole 6, during the use of the nozzle, the compressed air circulates inside the first branch pipe 10 and the second branch pipe 16, which can take away the heat generated by the part of the device and dissipate heat. Part of the heat accumulated inside the cavity 5 exchanges heat with the outside through the heat dissipation holes 6 to increase the safety of the oil nozzle. A protective sheet 17 is provided on one side of the mixing bin 15, and a nozzle 18 is provided on the protective sheet 17. .

The connection between the main body pipe 1 and the fixed block 9 is provided with a groove, the groove is compatible with the fixed block 9, the main body pipe 1 is fastened with the protective head 7, and the number of the heat dissipation holes 6 is set to be multiple A plurality of said heat dissipation holes 6 run through the main body tube 1 and are connected to the heat dissipation chamber 5, and one end of the protection head 7 is provided with a limit groove, and the limit groove is adapted to the protection sheet 17, and the protection sheet 17 is set as Arc shape, by setting the gas gathering chamber 8, the through hole 13 and the second distribution pipe 16, the oil is transported to the inside of the vortex chamber 12 through the oil channel 3, and the compressed air is supplied from the intake channel 4, and the vortex chamber 12 is carried out through the through hole 13. It forms a high-speed rotating vortex with the oil, and part of the compressed air gathers into the gas gathering chamber 8 through the first distribution pipe 10, and then enters the mixing chamber 15 through the second distribution pipe 16 to mix with a round of atomized oil. 18 is discharged from the nozzle in the form of droplets to achieve a strong atomization effect. The protective head 7 is made of high temperature resistant ceramic material, the protective sheet 17 is made of tungsten steel material, and the first shunt pipe 10 and the second shunt pipe 16 are connected to the gas gathering chamber 8 .

The working principle of this utility model: when the secondary air atomizing fuel nozzle is used, the fuel is transported to the inside of the vortex chamber 12 through the oil passage 3, and the compressed air is supplied from the air intake passage 4, and the vortex chamber 12 and the fuel form a high speed through the through hole 13. Rotating vortex, part of the compressed air gathers into the gas gathering chamber 8 through the first distribution pipe 10, and then enters the mixing chamber 15 through the second distribution pipe 16 to mix with a round of atomized oil, and passes through the nozzle 18 on the protective sheet 17. The nozzle is discharged in a drop form. During the use of the nozzle, the compressed air circulates inside the first branch pipe 10 and the second branch pipe 16, which can take away the heat generated by the device. Part of the heat accumulated in the cooling chamber 5 passes through the cooling holes 6 Heat exchange with the outside can increase the safety of the nozzle.

Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model, All should be included within the protection scope of the present utility model.

Claims (6)

1. A two-stage air atomizing fuel nozzle, comprising a main pipe (1), characterized in that: the main pipe (1) is provided with an oil inlet pipe (2), and the inside of the oil inlet pipe (2) is provided with an oil passage (3), an air intake passage (4) is provided between the oil inlet pipe (2) and the main pipe (1), and a cooling chamber (5) is provided inside the main pipe (1), and the cooling chamber ( 5) A heat dissipation hole (6) is provided between the main pipe (1), a protective head (7) is provided at one end of the main pipe (1), and a gas gathering chamber (8) is provided inside the protective head (7) , a fixed block (9) is provided between the protective head (7) and the inner wall of the main pipe (1), a first shunt pipe (10) is provided on one side of the gas gathering chamber (8), and the oil inlet pipe ( 2) An oil injection head (11) is provided at one end, and a vortex chamber (12) is provided inside the oil injection head (11), and a through hole ( 13), a spacer (14) is provided between the fuel injection head (11) and the protective head (7), and a mixing bin (15) is provided at one end of the vortex chamber (12), and the mixing A second shunt pipe (16) is provided between the bin (15) and the gas gathering bin (8), and a protective sheet (17) is provided on one side of the mixing bin (15), and a protective sheet (17) is provided on the protective sheet (17). There is a spout (18). 2. A two-stage air atomizing fuel nozzle according to claim 1, characterized in that: a groove is provided at the connection between the main body pipe (1) and the fixing block (9), and the groove and the fixing block (9) is adapted, and the main pipe (1) is fastened with the protective head (7). 3. A two-stage air atomizing fuel nozzle according to claim 1, characterized in that: the number of the heat dissipation holes (6) is set to a plurality, and the plurality of heat dissipation holes (6) run through the main pipe ( 1) It is connected with the cooling cavity (5). 4. A two-stage air atomizing fuel nozzle according to claim 1, characterized in that: one end of the protective head (7) is provided with a limiting groove, and the limiting groove is matched with the protective sheet (17) , the protective sheet (17) is arranged in an arc shape. 5. A two-stage air atomizing fuel nozzle according to claim 1, characterized in that: the protective head (7) is made of high temperature resistant ceramic material, and the protective sheet (17) is made of tungsten steel material to make. 6 . The two-stage air atomizing fuel nozzle according to claim 1 , characterized in that: the first branch pipe ( 10 ) and the second branch pipe ( 16 ) are both connected to the gas gathering chamber ( 8 ).