Fuel supply system with multiple nozzle structure

Abstract

The utility model provides a fuel supply system with multiple spray pipe structures, which comprises a body, a throttle valve cavity is arranged in the body, and a spray pipe hole is arranged on the body; the main spray pipe is sleeved in the spray pipe hole, and one end of the main spray pipe extends into the throttle valve cavity; at least one layer of auxiliary spray pipe is sleeved in the main spray pipe; a main metering hole is formed in the bottom of the main spraying pipe, and the main spraying pipe and the auxiliary spraying pipe are tightly connected through the main metering hole and fixed to the body. According to the system, through the multi-spray-pipe structural design, the atomization effect is improved, and the energy loss is reduced. And the multi-spray-pipe structure is compact in design, reasonable in layout and convenient to install and maintain, and meanwhile the stability and reliability of the system are guaranteed.

Description

Technical Field

[0001] The present invention relates to a gas supply system, and more particularly to a fuel supply system with a multi-nozzle structure. Background Art

[0002] For an engine, the mixing uniformity of fuel and air is crucial, which has a significant impact on the power performance, economy, emissions, and cyclic variation of the engine. In an engine, the component responsible for this function is the fuel supply mixer. In existing fuel supply mixers, the main nozzle is connected to the main metering orifice, and fuel and gas are mixed in the main nozzle, which easily leads to poor gas-liquid mixing uniformity and energy loss. In addition, when existing fuel supply mixers are adapted to different engines, it is necessary to adjust and replace the main metering orifice and the main nozzle. The adjustment and replacement process is very complex, and it is easy to have assembly errors during the assembly process after adjustment and replacement, resulting in problems such as oil leakage. Summary of the Invention

[0003] Therefore, the main object of the present invention is to solve the traditional deficiencies. The present invention provides a fuel supply system with a multi-nozzle structure.

[0004] To achieve the above object, the present invention provides a fuel supply system with a multi-nozzle structure, including a body. A throttle chamber is provided inside the body, and a nozzle hole is provided on the body.

[0005] The main nozzle is inserted into the nozzle hole, and one end extends deep into the throttle chamber.

[0006] At least one layer of secondary nozzles is inserted into the main nozzle.

[0007] A main metering orifice is provided at the bottom of the main nozzle. The main metering orifice tightly connects and fixes the main nozzle and the secondary nozzle to the body.

[0008] In an embodiment of the present invention, when the at least one layer of secondary nozzles is a single-layer secondary nozzle, the secondary nozzle is inserted into the main nozzle.

[0009] In an embodiment of the present invention, when the at least one layer of secondary nozzles is multiple layers of secondary nozzles, the multiple layers of secondary nozzles are successively inserted into the main nozzle; and the inner diameter of the outer secondary nozzle of two adjacent layers is greater than the outer diameter of the inner secondary nozzle.

[0010] In an embodiment of the present invention, a plurality of through holes are provided on the side wall of the main nozzle, and a plurality of through holes are provided on the side wall of the secondary nozzle.

[0011] In an embodiment of the present invention, the length of the secondary nozzle is less than the length of the main nozzle.

[0012] In an embodiment of the present invention, a pore diameter adjusting member is disposed around the main orifice for adjusting the size of the pore diameter.

[0013] In an embodiment of the present invention, a first channel is formed at the bottom of the body. The first channel is a fuel channel, and the first channel communicates with the main nozzle through the main orifice.

[0014] In an embodiment of the present invention, a second channel is formed on the side surface of the body. The second channel is an air channel, and the second channel communicates with the main nozzle.

[0015] In an embodiment of the present invention, a primary mixing channel is provided inside the main nozzle. Fuel is introduced into the main nozzle from the main orifice through the first channel, and air enters the main nozzle through the second channel. A primary mixture is formed by mixing in the primary mixing channel.

[0016] In an embodiment of the present invention, a secondary mixing channel is provided inside each layer of the auxiliary nozzles. The primary mixture passes through the through holes on the side wall of the main nozzle and the through holes on the side wall of the auxiliary nozzles, and is mixed with the fuel in each layer of the auxiliary nozzles multiple times in the secondary mixing channel.

[0017] Compared with the related art, the advantages of the present application are as follows:

[0018] The present invention discloses a fuel supply system with a multi-nozzle structure. Through the design of the multi-nozzle structure, the main nozzle is sleeved into the nozzle hole of the main body, and one end extends deep into the throttle cavity. At least one layer of auxiliary nozzles is sleeved inside the main nozzle. At the same time, the main orifice tightly connects the main nozzle and the auxiliary nozzles and fixes them on the body. Through this system, air enters the main nozzle to be preliminarily mixed with fuel, and then enters the auxiliary nozzle to be secondarily mixed with fuel. After multiple sufficient mixings, the atomization effect is improved and the energy loss is reduced. This system improves the flexibility and efficiency of fuel supply and is suitable for different types of engines. In addition, the design of the multi-nozzle structure is compact and reasonable in layout. When a fault occurs, only the corresponding main nozzle or auxiliary nozzle needs to be replaced, which is convenient for installation and maintenance, and at the same time ensures the stability and reliability of the system.

[0019] In order to further understand the technology, method and effect of the present invention and achieve the predetermined purpose of the present invention, please refer to the following detailed description and drawings; in addition, the purpose, characteristics and features of the present invention can be understood more deeply and specifically; however, the drawings are provided only for reference and description and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a fuel supply system with a multi-nozzle structure according to the present invention;

[0021] Figure 2 It is a perspective view of the main nozzle;

[0022] Figure 3 It is a perspective view of the auxiliary nozzle;

[0023] Figure 4 It is a perspective view of the main orifice.

[0024] Among them, the reference signs are:

[0025] 1: Body

[0026] 2: Throttle chamber

[0027] 11: Nozzle hole

[0028] 12: Main nozzle

[0029] 12A: First end

[0030] 12B: Second end

[0031] 121: Screw hole

[0032] 122: Boss

[0033] 13: Auxiliary nozzle

[0034] 123, 131: Through hole

[0035] 14: Main orifice

[0036] 141: Orifice diameter adjusting member

[0037] 15: First channel

[0038] 16: Second channel

[0039] 17: Sealing member. Detailed implementation manner

[0040] The detailed description and technical content of the present novelty are described below in conjunction with the drawings. However, the attached drawings are only for reference and illustration purposes and are not used to limit the present novelty.

[0041] Please refer to Figures 1 to 4 , Figure 1 which is a schematic structural diagram of a fuel supply system with a multi-nozzle structure of the present novelty; Figure 2 It is a perspective view of the main nozzle; Figure 3 It is a perspective view of the auxiliary nozzle; Figure 4 It is a perspective view of the main orifice; the arrow directions in each figure indicate the flow direction of the liquid / gas in the channel.

[0042] As Figure 1As shown in the figure: The present invention provides a fuel supply system with a multi-nozzle structure. The fuel supply system with a multi-nozzle structure includes a body 1. A throttle chamber 2 is arranged inside the body 1, and a nozzle hole 11 is formed on the body 1. A multi-nozzle structure is sleeved in the nozzle hole 11. The multi-nozzle structure includes a main nozzle 12 and at least one layer of auxiliary nozzles 13. The main nozzle 12 is sleeved into the nozzle hole 11, and one end extends into the throttle chamber 2. At least one layer of auxiliary nozzles 13 is further sleeved into the main nozzle 12. A main metering orifice 14 is arranged at the bottom of the main nozzle 12. The main metering orifice 14 tightly connects and fixes the main nozzle 12 and the auxiliary nozzles 13 on the body 1, ensuring the stable position and good sealing performance of the main / auxiliary nozzles.

[0043] In some embodiments, the multi-nozzle structure is generally set as a double-nozzle structure, that is, at least one layer of auxiliary nozzles is a single-layer auxiliary nozzle. The auxiliary nozzle 13 is sleeved into the main nozzle 12 to form a double-nozzle structure.

[0044] In other embodiments, the at least one layer of auxiliary nozzles is multiple layers of the auxiliary nozzles. That is, when there are two or more layers, multiple auxiliary nozzles are sleeved layer by layer according to the inner diameter / outer diameter size to form multiple layers of auxiliary nozzles. The multiple layers of auxiliary nozzles 13 are further sleeved into the main nozzle 12 to form a multi-nozzle structure. Among them, the inner diameter of the outer-layer auxiliary nozzle is larger than the outer diameter of the inner-layer auxiliary nozzle between two adjacent layers of auxiliary nozzles.

[0045] In this embodiment, the main nozzle and the auxiliary nozzles are sleeved in multiple layers, making the overall structure compact and the layout reasonable. In case of a failure, only the corresponding main nozzle or auxiliary nozzles need to be replaced, which is convenient for installation and maintenance. At the same time, the stability and reliability of the system are ensured.

[0046] Refer to Figure 2 As shown in, in some embodiments, a screw hole 121 is arranged at the first end 12A of the main nozzle 12. When the main nozzle 12 is installed into the nozzle hole 11, a metering orifice plug is screwed on the screw hole 121. The main metering orifice 14 is arranged on the metering orifice plug. The second end 12B of the main nozzle 12 extends into the throttle chamber 2.

[0047] Further refer to Figure 2 、 Figure 3As shown in , in some embodiments, a plurality of through holes 123 are provided on the side wall of the main nozzle 12, and a plurality of through holes 131 are also provided on the side wall of the auxiliary nozzle 13. Specifically, a boss 122 is provided in the middle part between the first end 12A and the second end 12B of the main nozzle 12, and a through hole 123 is provided on the boss 122. In some embodiments, the length of the auxiliary nozzle 13 is less than the length of the main nozzle 12, so that the auxiliary nozzle 13 is completely inserted into the boss position in the middle part of the main nozzle 12. A plurality of through holes 131 are also provided on the side wall of the corresponding auxiliary nozzle 13, so that liquid / gas can be communicated between the main nozzle 12 and the auxiliary nozzle 13 through the through holes 123 of the main nozzle 12 and the through holes 131 of the auxiliary nozzle 13.

[0048] In addition, in some embodiments, further reference is made to Figure 4 As shown, the main metering hole 14 is provided with an aperture adjustment member 141 on its periphery for adjusting the aperture size. The main metering hole 14 is used to accurately control the fuel flow rate flowing into the main nozzle 12 and the auxiliary nozzle 13 to ensure the accurate ratio of the mixed gas. In addition, the main metering hole is designed to be adjustable to meet the supply requirements of different models of engines and ensure the accuracy and stability of gas supply.

[0049] Further reading Figure 1 As shown in the figure, in this embodiment, a first channel 15 is opened at the bottom of the main body 1, and the first channel 15 is a fuel channel. The first channel 15 is connected to the main nozzle 12 through the main metering hole 14, and the fuel (such as gasoline) is introduced into the main nozzle 12 and the auxiliary nozzle 13 from the main metering hole 14 through the first channel 15.

[0050] At the same time, a second channel 16 is opened on the side of the body 1, and the second channel is an air channel. The second channel 16 is connected to the main nozzle 12. Figure 1 As shown in , the second channel 16 is connected to the main nozzle 12 at a position close to the second end 12B of the main nozzle 12 , and air enters the main nozzle 12 through the second channel 16 .

[0051] In this embodiment, a primary mixing channel is provided inside the main nozzle, and the fuel is introduced into the main nozzle from the main metering orifice through the first channel, and the air enters the main nozzle through the second channel, and is mixed in the primary mixing channel to form a primary mixed gas. At the same time, a secondary mixing channel is provided inside each layer of the auxiliary nozzle, and the primary mixed gas passes through the through hole 123 on the side wall of the main nozzle and the through hole 131 on the side wall of the auxiliary nozzle, and is mixed with the fuel in each layer of the auxiliary nozzle in the secondary mixing channel for multiple times to enhance the atomization effect. Finally, it is ensured that the mixed gas after multiple times of sufficient mixing enters the throttle cavity 2 through the auxiliary nozzle 13 for atomization, providing energy for efficient operation of the engine.

[0052] In addition, in some embodiments, seals 17 are provided at the entrances of all first channels 15 and second channels 16, and seals are provided at the connections of other components, such as the connection between the main metering orifice 14 and the main nozzle 12, and the connection between the second channel 16 and the main nozzle 12, to prevent fuel leakage and ensure the safety of system operation.

[0053] In summary, the fuel supply system with a multiple nozzle structure disclosed in the present invention is designed with a multiple nozzle structure, in which the main nozzle is inserted into the nozzle hole of the main body, and one end is inserted into the throttle cavity, and at least one layer of auxiliary nozzle is inserted into the main nozzle. At the same time, the main metering hole tightly connects the main nozzle and the auxiliary nozzle and fixes them on the main body. Through this system, air enters the main nozzle and is initially mixed with the fuel, and then enters the auxiliary nozzle and is mixed with the fuel for a second time. After multiple sufficient mixing, the atomization effect is improved, energy loss is reduced, energy conservation and emission reduction are achieved, and the system is more environmentally friendly. The flexibility and efficiency of fuel supply are improved, and it is suitable for different types of engines. In addition, the multiple nozzle structure design has a compact structure and a reasonable layout. In case of failure, only the corresponding main nozzle or auxiliary nozzle needs to be replaced, which is convenient for installation and maintenance, while ensuring the stability and reliability of the system.

[0054] The above description is only a detailed description and drawings of the preferred specific embodiments of the present invention, but the features of the present invention are not limited thereto and are not intended to limit the present invention. The entire scope of the present invention shall be subject to the scope of the patent application. All embodiments that conform to the spirit of the patent application scope of the present invention and similar variations thereof shall be included in the scope of the present invention. Any changes or improvements that can be easily conceived by any ordinary technician in the field of the present invention who is familiar with the technology may be covered by the following patent scope of this case.

Claims

1. A fuel supply system with a multi-nozzle structure, comprising a body, characterized in that, A throttle valve cavity is provided inside the body, and a nozzle hole is provided on the body; The main nozzle is inserted into the nozzle hole, and one end extends deep into the throttle valve cavity; At least one layer of auxiliary nozzles is inserted into the main nozzle; A main metering orifice is provided at the bottom of the main nozzle, and the main metering orifice tightly connects the main nozzle and the auxiliary nozzles and is fixed on the body.

2. The system according to claim 1, wherein When the at least one layer of auxiliary nozzles is a single-layer auxiliary nozzle, the auxiliary nozzle is inserted into the main nozzle.

3. The system according to claim 1, wherein When the at least one layer of auxiliary nozzles is multiple layers of auxiliary nozzles, the multiple layers of auxiliary nozzles are successively inserted into the main nozzle; and the inner diameter of the outer-layer auxiliary nozzle of two adjacent layers is greater than the outer diameter of the inner-layer auxiliary nozzle.

4. The system according to any one of claims 1 to 3, characterized in that, A plurality of through holes are provided on the side wall of the main nozzle, and a plurality of through holes are provided on the side wall of the auxiliary nozzle.

5. The system according to claim 1, wherein The length of the auxiliary nozzle is less than the length of the main nozzle.

6. The system according to claim 1, wherein A pore diameter adjusting member is provided around the main metering orifice for adjusting the size of the pore diameter.

7. The system according to claim 1, wherein A first channel is opened at the bottom of the body, and the first channel is a fuel channel, and the first channel is communicated with the main nozzle through the main metering orifice.

8. The system according to claim 7, wherein A second channel is opened on the side surface of the body, and the second channel is an air channel, and the second channel is communicated with the main nozzle.

9. The system according to claim 8, wherein An initial mixing channel is provided inside the main nozzle. Fuel is introduced into the main nozzle from the main metering orifice through the first channel, and air enters the main nozzle through the second channel, and an initial mixture is formed by mixing in the initial mixing channel.

10. The system according to claim 9, wherein A secondary mixing channel is provided inside each layer of the auxiliary nozzles. The initial mixture passes through the through holes on the side wall of the main nozzle and the through holes on the side wall of the auxiliary nozzles, and is mixed with the fuel in each layer of the auxiliary nozzles multiple times in the secondary mixing channel.

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