Multi-stage stratified atomizing nozzle device for carburetor

Abstract

This utility model discloses a multi-stage layered atomizing nozzle device for carburetors, relating to the field of internal combustion engine power engineering technology. It includes a nozzle device body with a mixing chamber and a guide chamber inside, which are connected. A flow divider is installed inside the guide chamber. Through the cooperation between the mixing chamber, guide chamber, flow divider, through-holes, and atomizer, the device allows fuel to be first delivered to the atomizer via a conduit. Before entering the guide chamber and mixing with air, the fuel undergoes preliminary atomization by the atomizer, pre-breaking the liquid fuel into smaller particles. This, combined with the flow divider in the guide chamber, forms a multi-stage atomization process. The fuel is first initially atomized by the atomizer and then enters the guide chamber with the airflow, where it is further divided and cut by the through-holes of the flow divider. This improves the fineness and uniformity of fuel atomization, reduces insufficiently atomized fuel particles, and provides a better atomization foundation for the subsequent deep and uniform mixing of fuel and air in the mixing chamber.

Description

Technical Field

[0001] This utility model relates to the field of internal combustion engine power engineering technology, and in particular to a carburetor multi-stage layered atomizing nozzle device. Background Technology

[0002] The carburetor nozzle system is a core component of the internal combustion engine's fuel supply system, consisting of the main nozzle, idle nozzle, needle valve, and nozzle pipe. The main nozzle is responsible for fuel supply under medium-to-high load conditions. As air flows through the throat, the carburetor nozzle experiences increased flow velocity and decreased pressure, creating a negative pressure that draws fuel out of the nozzle and atomizes it. Under different operating conditions, the components work together. At idle, the idle nozzle supplies fuel through a bypass orifice to maintain the minimum engine speed. Under medium-to-high load conditions, the main nozzle becomes the primary fuel supply channel. The needle valve adjusts the nozzle cross-sectional area according to the throttle opening to control the air-fuel mixture concentration. During acceleration, the accelerator pump in some carburetors injects additional fuel to prevent power interruption. At the same time, the float chamber maintains a constant fuel level through the float and needle valve to ensure stable fuel supply pressure. The choke reduces the intake air volume during cold starts to enrich the air-fuel mixture. Electronically controlled carburetors also incorporate an ECU and oxygen sensor to further optimize air-fuel ratio control through closed-loop feedback.

[0003] However, existing devices have poor atomization effects, uneven atomization, and large atomized particle size, which makes it difficult for fuel to mix fully with air and burn completely. This not only significantly reduces engine combustion efficiency and causes fuel waste, but also produces a large amount of unburned hydrocarbons, carbon monoxide, and other harmful gases, exacerbating exhaust pollution and making it difficult to meet increasingly stringent environmental regulations. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a multi-stage layered atomizing nozzle device for carburetors, which improves the atomization effect of the device, makes the fuel and air mix more evenly, burns more completely, and reduces the production of hydrocarbons.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a multi-stage layered atomizing nozzle device for a carburetor, comprising a nozzle device body, wherein a mixing chamber and a guide cavity are provided inside the nozzle device body, the mixing chamber and the guide cavity are connected, a flow divider is installed inside the guide cavity, the flow divider has multiple through holes inside, two fixing blocks are connected to the outer surface of the flow divider, and a groove adapted to the two fixing blocks is provided inside the guide cavity.

[0006] As a further technical solution of this utility model, a conduit is provided on the left side of the nozzle device body, and the end of the conduit near the nozzle device body passes through the nozzle device body and is connected to an atomizer.

[0007] As a further technical solution of this utility model, a sealing gasket is provided on the outer surface of the conduit, and a sealing groove adapted to the sealing gasket is provided inside the main body of the nozzle device.

[0008] As a further technical solution of this utility model, the end of the catheter away from the main body of the mouth device is connected to a filter device, and a filter element is installed inside the filter device.

[0009] As a further technical solution of this utility model, a connecting pipe is connected to the left side of the filter device, and a slot is opened at the end of the connecting pipe away from the filter device.

[0010] As a further technical solution of this utility model, a nozzle is installed on the right side of the main body of the nozzle device, and the nozzle has a spray hole inside.

[0011] As a further technical solution of this utility model, the mixing chamber is internally connected to two air inlet pipes.

[0012] This utility model provides a multi-stage layered atomizing nozzle device for carburetors, which has the following advantages compared with the prior art: This carburetor multi-stage atomizing nozzle device, through the cooperation of the mixing chamber, guide chamber, splitter plate, multiple through holes, and atomizer, allows fuel to be first delivered to the atomizer via a conduit. Before entering the guide chamber and mixing with air, the fuel undergoes preliminary atomization by the atomizer, breaking the liquid fuel into smaller particles. This, combined with the splitter plate in the guide chamber, forms a multi-stage atomization process. The fuel undergoes initial atomization by the atomizer before entering the guide chamber with the airflow, where it is further split and cut by the through holes of the splitter plate. This achieves dual atomization—pre-atomization and splitting refinement—improving the fineness and uniformity of fuel atomization, effectively reducing insufficiently atomized fuel particles, and providing a better atomization foundation for deep and uniform mixing of fuel and air in the subsequent mixing chamber. This, in turn, is more conducive to improving engine combustion efficiency and reducing harmful emissions. Attached Figure Description

[0013] Figure 1 Left view of a carburetor multi-stage stratified atomizing nozzle assembly; Figure 2 Right view of a carburetor multi-stage stratified atomizing nozzle assembly; Figure 3 A three-dimensional structural diagram of a multi-stage layered atomizing nozzle device for a carburetor; Figure 4 This is a schematic diagram of the internal structure of the main body of the nozzle device in a multi-stage layered atomizing nozzle device for a carburetor. Figure 5 This is a schematic diagram of the internal structure of the filter device in a multi-stage atomizing nozzle device for a carburetor.

[0014] In the diagram: 1. Nozzle assembly body; 2. Mixing chamber; 3. Guide cavity; 4. Diverter plate; 5. Through hole; 6. Fixing block; 7. Groove; 8. Guide tube; 9. Sealing gasket; 10. Sealing groove; 11. Atomizer; 12. Filter device; 13. Filter element; 14. Connecting pipe; 15. Slot; 16. Nozzle; 17. Spray hole; 18. Air inlet pipe. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-5 This utility model provides a technical solution for a multi-stage layered atomizing nozzle device for carburetors: it includes a nozzle device body 1, which has a mixing chamber 2 and a guide cavity 3 inside. The mixing chamber 2 and the guide cavity 3 are connected. The nozzle device body 1 is the core load-bearing structure. The mixing chamber 2 and the guide cavity 3 inside it form a mixing and guiding channel for the fluid. The fluid to be sprayed first enters the mixing chamber 2 and is uniformly mixed. Then, it flows into the guide cavity 3 through the connecting structure to prepare for subsequent spraying. A flow divider plate 4 is installed inside the guide cavity 3. The flow divider plate 4 has multiple through holes 5 inside. The flow divider plate 4 inside the guide cavity 3 is a key component for achieving uniform fluid distribution. When the mixed fluid flows through the flow divider plate, it is divided into multiple small-flow fluids by multiple through holes 5, avoiding uneven spraying caused by fluid concentration. At the same time, the regular arrangement of the through holes makes the fluid form a stable flow direction. Two fixing blocks 6 are connected to the outer surface of the flow divider plate 4. The guide cavity 3 has grooves 7 that are adapted to the two fixing blocks 6.

[0017] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, a conduit 8 is provided on the left side of the nozzle device body 1. The end of the conduit 8 near the nozzle device body 1 passes through the nozzle device body 1 and is connected to an atomizer 11. The atomizer 11 can convert the fluid transported by the conduit into fine droplets, making the subsequent spray more uniform and preparing for subsequent diversion. A sealing gasket 9 is fitted on the outer surface of the conduit 8. A sealing groove 10 adapted to the sealing gasket 9 is opened inside the nozzle device body 1. Through the cooperation of the sealing gasket 9 and the sealing groove 10, a tight sealing structure is formed to prevent fluid leakage at the connection and ensure stable pressure. The end of the conduit 8 away from the nozzle device body is connected to a filter device 12. A filter element 13 is installed inside the filter device 12. The filter element 13 can filter impurities and particles in the fluid to avoid clogging the through holes 5 of the atomizer 11 and the diverter plate 4, ensuring long-term stable operation of the device. A connecting pipe 14 is connected to the left side of the filter device 12. A slot 15 is opened at the end of the connecting pipe 14 away from the filter device 12.

[0018] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a nozzle 16 is installed on the right side of the nozzle device body 1. The nozzle 16 has an injection hole 17 inside. The mixing chamber 2 is connected to two air inlet pipes 18. Gas can be introduced into the two air inlet pipes 18 connected to the mixing chamber 2. The gas and the fluid processed by the atomizer 11 are fully mixed in the mixing chamber 2. On the one hand, it can further refine the droplets and enhance the atomization effect. On the other hand, it can increase the injection pressure and improve the injection force, so that the atomization is more complete.

[0019] The working principle of this utility model is as follows: First, external fuel is stably connected through a connecting pipe 14 with a slot 15. After entering the filter device 12 through the connecting pipe 14, the internal filter element 13 filters out impurities in the fuel to prevent clogging of subsequent components. The filtered fuel is then transported to the nozzle device body 1 through the conduit 8. The sealing gasket 9 outside the conduit 8 is tightly fitted with the sealing groove 10 inside the body to achieve a seal and prevent fuel leakage. Subsequently, the fuel enters the atomizer 11 connected to the conduit 8 to complete the initial atomization, forming fuel particles with a smaller diameter. The fuel particles after the initial atomization enter the mixing chamber 2. The two air intake pipes 18 connected to the mixing chamber 2 simultaneously introduce air, causing the fuel to... The particles and air initially mix to form a basic air-fuel mixture. Then, the mixture flows to the area connected to the mixing chamber 2, passes through the diverter plate 4 fixed by the fixing block 6 and the groove 7, and is dispersed and cut by multiple through holes 5 on the diverter plate 4, realizing secondary atomization and stratified flow, further breaking the fuel aggregation phenomenon in the mixture, improving the fineness of fuel particles and the uniformity of the mixture. Finally, the uniform mixture optimized by the diversion enters the guide cavity 3, and under the guidance of the guide cavity 3, it flows stably to the nozzle 16 on the right side of the nozzle device body 1, and is injected into the engine combustion chamber through the injection hole 17 inside the nozzle 16, providing a high-quality air-fuel mixture for the engine's efficient combustion.

[0020] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A carburetor multi-stage stratified atomizing nozzle device, characterized in that, The device includes a nozzle assembly body (1), which has a mixing chamber (2) and a guide cavity (3) inside. The mixing chamber (2) and the guide cavity (3) are connected. A flow divider plate (4) is installed inside the guide cavity (3). The flow divider plate (4) has multiple through holes (5) inside. Two fixing blocks (6) are connected to the outer surface of the flow divider plate (4). The guide cavity (3) has grooves (7) that are adapted to the two fixing blocks (6).

2. The carburetor multi-stage stratified atomizing nozzle device according to claim 1, characterized in that, A conduit (8) is provided on the left side of the nozzle device body (1). The end of the conduit (8) near the nozzle device body (1) passes through the nozzle device body (1) and is connected to an atomizer (11).

3. The carburetor multi-stage stratified atomizing nozzle device according to claim 2, characterized in that, The outer surface of the conduit (8) is fitted with a sealing gasket (9), and the inside of the nozzle device body (1) is provided with a sealing groove (10) that matches the sealing gasket (9).

4. The carburetor multi-stage stratified atomizing nozzle device according to claim 2, characterized in that, The end of the conduit (8) away from the main body of the mouth device is connected to a filter device (12), and a filter element (13) is installed inside the filter device (12).

5. The carburetor multi-stage stratified atomizing nozzle device according to claim 4, characterized in that, The left side of the filter device (12) is connected to a connecting pipe (14), and a slot (15) is provided at the end of the connecting pipe (14) away from the filter device (12).

6. The carburetor multi-stage stratified atomizing nozzle device according to claim 1, characterized in that, The nozzle device body (1) is equipped with a nozzle (16) on its right side, and the nozzle (16) has a spray hole (17) inside.

7. The carburetor multi-stage stratified atomizing nozzle device according to claim 1, characterized in that, The mixing chamber (2) is internally connected to two air inlet pipes (18).

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