Carburetor structure for preventing balance hole from leaking oil during inclined operation
By setting a turning balance hole in the carburetor and distributing it at both ends of the four corners diagonals, it ensures that at least one balance hole is at a high level and forms a return path, which solves the oil leakage problem when the engine is inclined, and achieves the leakage prevention effect of the balance hole.
Patent Information
- Application Number
- CN202422448274.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-10-10
AI Technical Summary
When the engine is running inclined, the balance hole of the carburetor is prone to oil leakage, especially when the distance between the oil surface and the balance hole in the oil storage room changes, resulting in intermittent oil leakage.
A carburetor structure is designed, in which the balance hole is set as a turning type and is distributed at both ends of the diagonal ends of the four corners of the carburetor body to ensure that at least one balance hole is at a high position when inclined in any direction, and a return path is formed through structures such as atmospheric connection, balance hole connection and cavity connection to prevent oil injection leakage from fluctuating oil surfaces.
It effectively prevents oil leakage in the balance hole when the engine is tilted in any direction, ensures that the oil injection with fluctuations in the oil surface is stopped and returned, and avoids the risk of leakage.
Smart Images
Figure CN223089408U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of carburetor structures, and particularly relates to a carburetor structure for preventing oil leakage from balance holes during inclined operation. Background Technique
[0002] Engines operating during dynamic movement, such as farming machines, lawn mowers, and go-karts, as well as engines with fuel that move with the vehicle, are prone to tilting up and down slopes. At this time, the distance between the oil level in the carburetor fuel storage chamber and the balance hole changes, leading to oil leakage problems.
[0003] Most of the balance holes in the current carburetor body are directly connected inside and outside, with single or double balance holes. For example, Figure 1 in [reference figure 1], 11' is the balance hole on the trademark surface, 12' is the balance hole on the lower left side of the intake cavity surface, and 13' is the balance hole on the upper right side of the intake cavity surface. Figure 2 in [reference figure 2], 21' is the balance hole on the mixing chamber surface. When the engine tilts and the balance hole is in a lower position due to the tilting direction, with the engine vibration, the fuel in the fuel storage chamber fluctuates, and there is a risk of intermittent spraying and leakage of oil products from the balance hole. For example, Figure 3 when tilting in the direction A of the mixing chamber, there is a risk of oil leakage in the 21' mixing chamber balance hole structure body; when tilting in the fuel inlet direction B, there is a risk of oil leakage in the 13' balance hole on the upper right side of the intake cavity surface; when tilting in the intake cavity direction C and the trademark direction D, there are risks of oil leakage in the 11' trademark surface balance hole and the 12' balance hole on the lower left side of the intake cavity surface. Content of the Utility Model
[0004] In view of the deficiencies of the above-mentioned prior art, the utility model provides a carburetor structure for preventing oil leakage from balance holes during inclined operation, including: a carburetor body, and a fuel storage chamber connected to the carburetor body, the fuel storage chamber including a fuel storage cavity;
[0005] The carburetor body is provided with a plurality of turning-type balance holes. The height of the balance hole orifice communicating with the atmosphere is higher than the height of the balance hole orifice communicating with the carburetor body and the fuel storage chamber, and the balance hole orifice communicating with the atmosphere and the balance hole orifice communicating with the carburetor body are distributed at both ends of the diagonal of the four corners of the carburetor body.
[0006] In some embodiments, the balance holes include transverse balance holes and longitudinal balance holes, and the intersection holes of the transverse balance holes and the longitudinal balance holes are distributed at one of the corners of a diagonal line.
[0007] In some embodiments, the inclined directions of the carburetor in all directions include the mixing chamber direction, the fuel inlet direction, the intake cavity direction, and the trademark direction; when the engine tilts in the mixing chamber direction, the fuel inlet direction, the intake cavity direction, or the trademark direction, the balance hole can always maintain a position at a high place to intercept and return the oil spray generated by the fluctuating oil level.
[0008] In some of these embodiments, an atmospheric connection balance hole, a balance hole connection through-hole, a cavity connection balance hole, and a balance hole connection pre-pressure hole are provided on the carburetor body; the atmosphere communicates with the balance hole connection through-hole through the atmospheric connection balance hole, the balance hole connection through-hole communicates with the balance hole connection pre-pressure hole, and the cavity connection balance hole communicates with the balance hole connection pre-pressure hole, and is connected to the fuel storage cavity.
[0009] In some of these embodiments, a plug mounting hole is further provided on the carburetor body, and a plug is mounted on the plug mounting hole to block the balance hole connection pre-pressure hole from directly communicating with the atmosphere.
[0010] In some of these embodiments, the atmospheric connection balance hole includes an atmospheric connection balance hole orifice and an atmospheric connection balance hole passage, and the cavity connection balance hole includes a cavity connection balance hole orifice and a cavity connection balance hole passage.
[0011] In some of these embodiments, the inclined directions of the carburetor in all directions include the mixing chamber direction, the fuel inlet direction, the air intake cavity direction, and the trademark direction; when the engine is inclined towards the mixing chamber direction, the balance hole connection pre-pressure hole is at a high position; when the engine is inclined towards the fuel inlet direction, the orifice of the atmospheric connection balance hole is at a high position, when the engine is inclined towards the air intake cavity direction, the orifice of the cavity connection balance hole is at a high position, and when the engine is inclined towards the trademark direction, the balance hole connection pre-pressure hole and the cavity connection balance hole passage are at a high position.
[0012] Compared with the prior art, the advantages and beneficial effects of the present utility model are as follows:
[0013] The carburetor structure provided by the present utility model for preventing oil leakage from the balance hole during inclined operation, when the engine is inclined in any direction of the mixing chamber direction, the fuel inlet direction, the near air cavity direction, or the trademark direction, there is always a position of the balance hole at a high position, and the oil injection generated by the fluctuating oil surface is intercepted and refluxed in the balance hole passage, which can avoid the risk of spraying and leakage. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0015] Figure 1 Schematic diagram of the structure of the existing balance hole structure body Figure 1 ;
[0016] Figure 2Schematic diagram of the body structure of the existing balance hole structure Figure 2 ;
[0017] Figure 3 Schematic diagram of the structure of the existing carburetor in various tilting directions;
[0018] Figure 4 Schematic diagram of the structure of the carburetor shown in the embodiment of the present invention to prevent oil leakage from the balance hole during tilting operation;
[0019] Figure 5 Schematic diagram of the carburetor body structure shown in the embodiment of the present invention;
[0020] Figure 6 Schematic diagram of the fuel storage chamber structure shown in the embodiment of the present invention;
[0021] Figure 7 Schematic diagram of the plug structure shown in the embodiment of the present invention;
[0022] Figure 8 Cross-section of the carburetor structure shown in the embodiment of the present invention to prevent oil leakage from the balance hole during tilting operation Figure 1 ;
[0023] Figure 9 Cross-section of the carburetor structure shown in the embodiment of the present invention to prevent oil leakage from the balance hole during tilting operation Figure 2 ;
[0024] Figure 10 Schematic diagram of the structure of the carburetor shown in the embodiment of the present invention in various tilting directions;
[0025] Wherein:
[0026] 11'-Trademark surface balance hole;
[0027] 12'-Left lower side balance hole of the intake cavity surface;
[0028] 13'-Upper right side balance hole of the intake cavity surface;
[0029] 21'-Mixture chamber surface balance hole;
[0030] 1-Carburetor body;
[0031] 101-Atmosphere connection balance hole;
[0032] 1011-Atmosphere connection balance hole orifice;
[0033] 1012-Atmosphere connection balance hole passage;
[0034] 102-Balance hole connection through-hole;
[0035] 103-Cavity connection balance hole;
[0036] 1031 - Orifice of the cavity connection balance hole;
[0037] 1032 - Passage of the cavity connection balance hole;
[0038] 104 - Balance hole connecting to the pre - pressure hole;
[0039] 105 - Plug installation hole;
[0040] 2 - Oil storage chamber;
[0041] 201 - Oil storage cavity;
[0042] 3 - Plug;
[0043] A - Mixing chamber direction;
[0044] B - Oil inlet direction;
[0045] C - Air intake cavity direction;
[0046] D - Trademark direction. Detailed implementation manners
[0047] The technical solution of the present utility model will be described in detail below in conjunction with the attached drawings and specific embodiments, so as to further understand the purpose, solution and effects of the present utility model, but it is not intended to limit the scope of protection of the appended claims of the present utility model.
[0048] In the description of the present specification and the subsequent claims, certain terms are used to refer to specific components or parts. Those of ordinary skill in the art should understand that technical users or manufacturers may use different nouns or terms to refer to the same component or part. The present specification and the subsequent claims do not use the difference in names as a way to distinguish components or parts, but use the difference in functions of components or parts as the criterion for distinction. The terms "including" and "comprising" mentioned throughout the specification and the subsequent claims are open - ended terms, so they should be interpreted as "including but not limited to". In addition, the term "connection" herein includes any direct and indirect electrical connection means. Indirect electrical connection means include connection through other devices.
[0049] It should be noted that in the description of the present utility model, the orientation or positional relationship or parameters indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and "about", or "approximately", "substantially", "about" and so on are all based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description content, and does not indicate or imply that the device or element referred to must have a specific orientation, a specific size or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model.
[0050] Refer to Figures 4 - 10 Figures 4 - 10 , an embodiment of the present utility model provides a carburetor structure for preventing oil leakage from the balance holes during tilting operation, including: a carburetor body 1 and an oil storage chamber 2 connected to the carburetor body 1. The oil storage chamber 2 includes an oil storage cavity 201. A plurality of turning-type balance holes are provided on the carburetor body 1. The height of the balance hole orifice communicating with the atmosphere is higher than that of the balance hole orifice communicating with the carburetor body and the oil storage chamber. And the balance hole orifice communicating with the atmosphere and the balance hole orifice communicating with the carburetor body are distributed at both ends of the diagonal of the four corners of the carburetor body. The balance holes include horizontal balance holes and vertical balance holes, and the intersection holes of the horizontal balance holes and the vertical balance holes are distributed at one of the corners of a diagonal. The tilting directions of the carburetor in all directions include the mixing chamber direction, the fuel inlet direction, the air intake cavity direction, and the trademark direction. When the engine tilts towards the mixing chamber direction, the fuel inlet direction, the air intake cavity direction, or the trademark direction, the balance holes can always keep one position at a high place to intercept and stop the oil injection generated by the fluctuating oil surface from flowing back.
[0051] Specifically, refer to Figures 4 - 10 Figures 4 - 10 , in the embodiment of the present utility model, an atmosphere connection balance hole 101, a balance hole connection through hole 102, a cavity connection balance hole 103, and a balance hole connection pre-pressure hole 104 are provided on the carburetor body 1. The atmosphere passes through the atmosphere connection balance hole 101 and communicates with the balance hole connection through hole 102. The balance hole connection through hole 102 communicates with the balance hole connection pre-pressure hole 104, and the cavity connection balance hole 103 communicates with the balance hole connection pre-pressure hole 104 and is connected to the oil storage cavity 201. A plug mounting hole 105 is further provided on the carburetor body 1, and a plug 3 is installed on the plug mounting hole 105 to block the balance hole connection pre-pressure hole 104 from directly communicating with the atmosphere.
[0052] Among them, the atmosphere connection balance hole 101 includes an atmosphere connection balance hole orifice 1011 and an atmosphere connection balance hole channel 1012, and the cavity connection balance hole 103 includes a cavity connection balance hole orifice 1031 and a cavity connection balance hole channel 1032.
[0053] In this embodiment, the inclined directions of the carburetor include the mixing chamber direction A, the fuel inlet direction B, the intake cavity direction C, and the trademark direction D; when the engine is inclined towards the mixing chamber direction A, the balance hole is connected to the pre-pressure hole 104 and is at a high position; when the engine is inclined towards the fuel inlet direction B, the atmosphere is connected to the orifice 1011 of the balance hole and is at a high position; when the engine is inclined towards the intake cavity direction C, the cavity is connected to the orifice 1031 of the balance hole and is at a high position; when the engine is inclined towards the trademark direction D, the balance hole is connected to the pre-pressure hole 104 and the cavity is connected to the balance hole passage 1032 and is at a high position. When the engine is inclined towards any one of the mixing chamber direction, the fuel inlet direction, the intake cavity direction or the trademark direction, there is always a position of the balance hole at a high place, and the fuel injection generated by the fluctuating oil surface is intercepted and refluxed in the balance hole passage, which can avoid the risk of fuel leakage and spraying.
[0054] The above is only the preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims
1. A carburetor structure for preventing oil leakage from balance holes during inclined operation, characterized in that: Comprising: A carburetor body, and an oil storage chamber connected to the carburetor body, the oil storage chamber including an oil storage cavity; A plurality of turning-type balance holes are provided on the carburetor body, the orifice height of the balance holes communicating with the atmosphere is higher than that of the balance holes communicating with the carburetor body and the oil storage chamber, and the orifice of the balance hole communicating with the atmosphere and the orifice of the balance hole communicating with the carburetor body are distributed at both ends of the diagonal of the four corners of the carburetor body.
2. The carburetor structure for preventing oil leakage from the balance hole during inclined operation according to claim 1, characterized in that: The balance holes include transverse balance holes and longitudinal balance holes, and the intersection holes of the transverse balance holes and the longitudinal balance holes are distributed at one of the corners of a diagonal line.
3. The carburetor structure for preventing oil leakage from the balance hole during inclined operation according to claim 2, characterized in that: The tilting directions of the carburetor in all directions include the mixing chamber direction, the fuel inlet direction, the air intake cavity direction, and the trademark direction; When the engine tilts towards the mixing chamber direction, the fuel inlet direction, the air intake cavity direction, or the trademark direction, the balance holes can always keep one position at a high place to intercept and stop the fuel injection generated by the fluctuating oil level from flowing back.
4. The carburetor structure for preventing oil leakage from the balance hole during tilting operation according to claim 1, wherein: An atmosphere connection balance hole, a balance hole connection through hole, a cavity connection balance hole, and a balance hole connection pre-pressure hole are provided on the carburetor body; the atmosphere communicates with the balance hole connection through hole through the atmosphere connection balance hole, the balance hole connection through hole communicates with the balance hole connection pre-pressure hole, and the cavity connection balance hole communicates with the balance hole connection pre-pressure hole and is connected to the oil storage cavity.
5. The carburetor structure for preventing oil leakage from the balance hole during tilting operation according to claim 4, characterized in that: A plug mounting hole is further provided on the carburetor body, and a plug is mounted on the plug mounting hole to block the balance hole connection pre-pressure hole from directly communicating with the atmosphere.
6. The carburetor structure for preventing oil leakage from the balance hole during inclined operation according to claim 4, characterized in that: The atmosphere connection balance hole includes an atmosphere connection balance hole orifice and an atmosphere connection balance hole passage, and the cavity connection balance hole includes a cavity connection balance hole orifice and a cavity connection balance hole passage.
7. The carburetor structure for preventing oil leakage from the balance hole during inclined operation according to claim 6, wherein: The tilting directions of the carburetor in all directions include the mixing chamber direction, the fuel inlet direction, the air intake cavity direction, and the trademark direction; When the engine tilts towards the mixing chamber direction, the balance hole connection pre-pressure hole is at a high position; when the engine tilts towards the fuel inlet direction, the orifice of the atmosphere connection balance hole is at a high position, when the engine tilts towards the air intake cavity direction, the orifice of the cavity connection balance hole is at a high position, and when the engine tilts towards the trademark direction, the balance hole connection pre-pressure hole and the cavity connection balance hole passage are at a high position.