Carburetor and engine

Abstract

The utility model provides a carburetor and an engine, the carburetor comprises a carburetor body, a throat and a mixing chamber which are communicated with each other are arranged in the carburetor body, and a rotatable throttle valve is arranged in the mixing chamber. A first air inlet channel and a second air inlet channel are arranged in the carburetor body, and the axis of the first air inlet channel intersects with the axis of the throat opening. When the throttle valve is completely closed, the second air outlet hole and the first air outlet hole are formed in the two sides of the throttle valve respectively, and the second air outlet hole is completely exposed. And gas can directly enter the mixing chamber through the second gas inlet channel without being influenced by the opening degree of the throttle valve, so that stable gas supply is realized, the engine can stably operate under the low-load working condition, and the requirements under different working conditions are met. Meanwhile, due to the fact that the axis of the first air inlet channel intersects with the axis of the throat opening, it can be guaranteed that the fuel gas in the first air inlet channel can be fully and evenly mixed with the air after being introduced into the throat opening, and therefore the dynamic property of the engine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of carburetors, in particular to a carburetors and an engine. Background Art

[0002] The carburetor adjusts the throttle opening to create a mixture with the appropriate concentration and quantity based on the engine's different operating conditions. When the engine is operating at low load, the throttle opening is small, and the gas in the throat is blocked by the throttle, reducing the amount of gas entering the mixing chamber from the throat. This insufficient gas supply in the mixing chamber leads to incomplete combustion, reducing the engine's power and economy. Utility Model Content

[0003] In view of the defects in the prior art, the purpose of the present invention is to provide a carburetor and an engine that are not affected by the throttle opening, achieve stable air supply, and meet the use needs of the engine under different working conditions.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a carburetor, including a carburetor body, wherein a connected throat and a mixing chamber are provided in the carburetor body, and a rotatable throttle is provided in the mixing chamber; a first air intake channel and a second air intake channel are provided in the carburetor body, the axis of the first air intake channel intersects with the axis of the throat, the first air intake channel passes through the inner wall of the throat and forms a first air outlet, and the second air intake channel passes through the inner wall of the mixing chamber and forms a second air outlet; when the throttle is fully closed, the second air outlet and the first air outlet are respectively arranged on both sides of the throttle, and the second air outlet is completely exposed.

[0005] Preferably, the axis of the first air inlet passage is perpendicular to the axis of the throat.

[0006] Preferably, the carburetor body includes a connected cover body and a seat body, and the cover body is provided with a first connecting hole and a second connecting hole; the throat and the mixing chamber are both provided on the seat body, and the seat body is provided with a third connecting hole and a fourth connecting hole, the third connecting hole is connected to the first air outlet hole, and the fourth connecting hole is connected to the second air outlet hole; the third connecting hole is connected to the first connecting hole to form the first air intake channel, and the fourth connecting hole is connected to the second connecting hole to connect to the second air intake channel.

[0007] Preferably, a groove is provided on the side wall of the base body, and the fourth connecting hole and the second air outlet are respectively connected to the groove; and a baffle is also included, and the baffle covers the notch of the groove.

[0008] Preferably, a countersunk hole is provided on the seat body, and the countersunk hole is communicated with the fourth connecting hole and the second connecting hole respectively.

[0009] Preferably, an air inlet cavity is provided in the cover body, and the air inlet cavity is communicated with the first connecting hole and the second connecting hole respectively.

[0010] Preferably, an air inlet pipe is provided on the cover body, the air inlet pipe is communicated with the air inlet cavity, and the air inlet end of the first connecting hole is close to the air outlet end of the air inlet pipe.

[0011] Preferably, a fifth connecting hole is provided on the cover body, one end of the fifth connecting hole passes through the side wall of the cover body, and the fifth connecting hole is respectively connected to the air inlet pipe, the first connecting hole and the second connecting hole; and a plug is also included, which blocks the fifth connecting hole to form the air inlet cavity.

[0012] Preferably, a first metering hole is provided in the first connecting hole, and a second metering hole is provided in the second connecting hole.

[0013] The utility model also provides an engine, comprising the above-mentioned carburetor.

[0014] Beneficial effects of the utility model:

[0015] The utility model discloses a carburetor and an engine. By designing a second air intake passage, the fuel gas can directly enter the mixing chamber through the second air intake passage without being affected by the throttle opening, thereby achieving stable air supply and enabling the engine to operate stably even under low-load conditions, thus meeting the needs under different operating conditions. At the same time, because the axis of the first air intake passage intersects with the axis of the throat, it is possible to ensure that the fuel gas in the first air intake passage is fully and evenly mixed with the air after entering the throat, thereby improving the power of the engine. In addition, by using the internal first and second air intake passages for air supply, the carburetor is not affected by the depth or angle of the air pipe insertion, and can ensure effective air supply, thereby avoiding the problem of insufficient air supply caused by the structure of conventional carburetors using the air pipe directly inserted into the throat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0017] Figure 1 A schematic cross-sectional view of a carburetor provided in one embodiment of the present utility model;

[0018] Figure 2 It is a structural diagram of one side of the mixing chamber;

[0019] Figure 3 It is a schematic diagram of the structure after the cover is hidden;

[0020] Figure 4 is a top view of the seat;

[0021] Figure 5 for Figure 4 AA cross-sectional diagram in;

[0022] Figure 6 for Figure 4 BB cross-section diagram in;

[0023] Figure 7 It is a structural schematic diagram of one side of the groove;

[0024] Figure 8 It is a local schematic diagram of the groove;

[0025] Figure 9 is a cross-sectional schematic diagram of the groove and the second air outlet;

[0026] Figure 10 Schematic diagram of the structure of the bottom of the cover;

[0027] Figure 11 is a cross-sectional schematic diagram of the cover;

[0028] Reference numerals:

[0029] 10. Carburetor body; 101. Cover; 102. Base; 11. Throat; 12. Mixing chamber; 13. Intake chamber; 14. Throttle; 15. Intake cavity; 16. First intake channel; 161. First connecting hole; 162. Third connecting hole; 17. Second intake channel; 171. Second connecting hole; 172. Fourth connecting hole; 18. First outlet hole; 19. Second outlet hole; 20. Intake pipe; 21. Groove; 22. Blocking piece; 23. First metering hole; 24. Second metering hole; 25. Countersunk hole; 26. Plug. DETAILED DESCRIPTION

[0030] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0031] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this utility model belongs.

[0032] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of this utility model, "plurality" means more than two, unless otherwise specifically defined.

[0034] In this application, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0035] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0036] like Figure 1-11As shown, in one embodiment of the present invention, a carburetor is provided, comprising a carburetor body 10. The carburetor body 10 is provided with an intake chamber 13, a throat 11, and a mixing chamber 12, which are sequentially connected. A rotatable throttle valve 14 is provided in the mixing chamber 12. A first intake channel 16 and a second intake channel 17 are provided in the carburetor body 10. The axis of the first intake channel 16 intersects with the axis of the throat 11. In this embodiment, the axis of the first intake channel 16 is perpendicular to the axis of the throat 11. The first intake channel 16 penetrates the inner wall of the throat 11 and is formed with a first air outlet 18. The second intake channel 17 penetrates the inner wall of the mixing chamber and is formed with a second air outlet 19. When the throttle valve 14 is fully closed, the second air outlet 19 and the first air outlet 18 are respectively arranged on either side of the throttle valve 14, and the second air outlet 19 is completely exposed.

[0037] The carburetor disclosed in this embodiment has a second air intake passage 17, through which the fuel gas can directly enter the mixing chamber 12 without being affected by the opening of the throttle valve 14, thereby achieving stable air supply and enabling the engine to operate stably even under low-load conditions, thus meeting the needs of different operating conditions. At the same time, because the axis of the first air intake passage 16 intersects with the axis of the throat 11, it can ensure that the fuel gas in the first air intake passage 16 can be fully and evenly mixed with the air after entering the throat 11, thereby improving the power of the engine. In addition, the carburetor uses the internal first air intake passage 16 and the second air intake passage 17 for air supply, which is not affected by the depth or angle of the air pipe insertion, and can ensure effective air supply, avoiding the problem of insufficient air supply caused by the structure of conventional carburetors using the air pipe directly inserted into the throat 11.

[0038] In one embodiment, the carburetor body 10 includes a connected cover 101 and a base 102. The cover 101 is provided with a first connecting hole 161 and a second connecting hole 171. The throat 11 and mixing chamber 12 are both provided on the base 102. The base 102 is also provided with a third connecting hole 162 and a fourth connecting hole 172. The third connecting hole 162 communicates with the first air outlet 18, and the fourth connecting hole 172 communicates with the second air outlet 19. The third connecting hole 162 connects with the first connecting hole 161 to form the first air intake passage 16, and the fourth connecting hole 172 connects with the second connecting hole 171 to form the second air intake passage 17.

[0039] In this embodiment, the first connecting hole 161, the second connecting hole 171, and the third connecting hole 162 all employ straight hole structures. This facilitates machining of the first connecting hole 161, the second connecting hole 171, and the third connecting hole 162, thereby ensuring machining quality. Furthermore, the split structure of the carburetor body 10 facilitates separate machining of the cover 101 and the base 102, reducing machining difficulty.

[0040] In one embodiment, a groove 21 is defined on the sidewall of the base body 102, and the fourth connecting hole 172 and the second air outlet 19 are respectively connected to the groove 21. The carburetor also includes a baffle 22, which can be welded to cover the notch of the groove 21. A countersunk hole 25 is defined on the base body 102, and the countersunk hole 25 is respectively connected to the fourth connecting hole 172 and the second connecting hole 171.

[0041] The gas flows sequentially from the second connecting hole 171 and the counterbore 25 into the fourth connecting hole 172, then into the chamber formed by the sealing groove 21 formed by the baffle 22. Finally, it flows through the second outlet 19 into the mixing chamber 12, ensuring normal gas supply during low-load engine operation. The structural design of the counterbore 25, the fourth air hole, and the groove 21 ensures smooth gas discharge from the second outlet 19 while effectively avoiding interference with the mounting position of the throttle valve 14's rotating shaft, ensuring the proper operation of the throttle valve 14 and the second intake passage 17.

[0042] In one embodiment, an air inlet cavity 15 is provided within the cover 101, and the air inlet cavity 15 is connected to the first connection hole 161 and the second connection hole 171. After the gas enters the air inlet cavity 15, it flows to the first connection hole 161 and the second connection hole 171, respectively. In this way, there is no need to connect the gas pipes to the first connection hole 161 and the second connection hole 171 separately.

[0043] In one embodiment, the cover 101 is provided with an air inlet pipe 20, which is in communication with the air inlet cavity 15. Gas enters the air inlet cavity 15 through the air inlet pipe 20. Because the first air inlet channel 16 requires a larger amount of gas, the air inlet end of the first connecting hole 161 is closer to the air outlet end of the air inlet pipe 20. Therefore, the gas entering the air inlet cavity 15 from the air inlet pipe 20 is more likely to flow to the first connecting hole 161.

[0044] In one embodiment, to facilitate processing of the air intake chamber 15, a fifth connecting hole is provided on the cover 101. One end of the fifth connecting hole extends through the side wall of the cover 101 and is connected to the air intake pipe 20, the first connecting hole 161, and the second connecting hole 171. The carburetor also includes a plug 26, which blocks the fifth connecting hole to form the air intake chamber 15.

[0045] In one embodiment, a first metering hole 23 is detachably mounted within the first connection hole 161, and a second metering hole 24 is detachably mounted within the second connection hole 171. By mounting the first metering hole 23 within the first connection hole 161 and the second metering hole 24 within the second connection hole 171, the amount of gas passing through the first and second intake passages 16, 17 can be effectively controlled according to usage requirements.

[0046] This embodiment also provides an engine including the above-mentioned carburetor. Due to the use of the above-mentioned carburetor, it has the same working principle and technical effects as the carburetor in the above-mentioned embodiment, which will not be described in detail here.

[0047] In the specification of the present invention, a large number of specific details are described. However, it is understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A carburetor, characterized in that: The invention comprises a carburetor body (10), wherein a throat (11) and a mixing chamber (12) are provided in the carburetor body (10), and a rotatable throttle valve (14) is provided in the mixing chamber (12); A first air intake channel (16) and a second air intake channel (17) are provided in the carburetor body (10); the axis of the first air intake channel (16) intersects with the axis of the throat (11); the first air intake channel (16) penetrates the inner wall of the throat (11) and forms a first air outlet (18); the second air intake channel (17) penetrates the inner wall of the mixing chamber and forms a second air outlet (19); When the throttle valve (14) is fully closed, the second air outlet hole (19) and the first air outlet hole (18) are respectively arranged on both sides of the throttle valve (14), and the second air outlet hole (19) is fully exposed.

2. The carburetor according to claim 1, characterized in that The axis of the first air inlet channel (16) is perpendicular to the axis of the throat (11).

3. The carburetor according to claim 1, characterized in that The carburetor body (10) comprises a connected cover body (101) and a base body (102); the cover body (101) is provided with a first connecting hole (161) and a second connecting hole (171); The throat (11) and the mixing chamber (12) are both provided on the base (102); a third connecting hole (162) and a fourth connecting hole (172) are provided on the base (102); the third connecting hole (162) is communicated with the first air outlet (18), and the fourth connecting hole (172) is communicated with the second air outlet (19); The third connecting hole (162) is connected to the first connecting hole (161) to form the first air intake channel (16), and the fourth connecting hole (172) is connected to the second connecting hole (171) to form the second air intake channel (17).

4. The carburetor according to claim 3, characterized in that A groove (21) is provided on the side wall of the seat body (102), and the fourth connecting hole (172) and the second air outlet hole (19) are respectively connected to the groove (21); and a baffle (22) is also included, and the baffle (22) covers the notch of the groove (21).

5. The carburetor according to claim 4, characterized in that The seat body (102) is provided with a countersunk hole (25), and the countersunk hole (25) is communicated with the fourth connecting hole (172) and the second connecting hole (171) respectively.

6. The carburetor according to claim 3, characterized in that An air inlet cavity (15) is provided in the cover body (101), and the air inlet cavity (15) is communicated with the first connecting hole (161) and the second connecting hole (171) respectively.

7. The carburetor according to claim 6, characterized in that An air inlet pipe (20) is provided on the cover body (101), the air inlet pipe (20) is communicated with the air inlet cavity (15), and the air inlet end of the first connecting hole (161) is close to the air outlet end of the air inlet pipe (20).

8. The carburetor according to claim 7, characterized in that The cover body (101) is provided with a fifth connecting hole, one end of which passes through the side wall of the cover body (101), and the fifth connecting hole is respectively connected to the air inlet pipe (20), the first connecting hole (161) and the second connecting hole (171); and further comprises a plug (26), which blocks the fifth connecting hole to form the air inlet cavity (15).

9. The carburetor according to claim 3, characterized in that A first measuring hole (23) is provided in the first connecting hole (161), and a second measuring hole (24) is provided in the second connecting hole (171).

10. An engine, characterized in that: A carburetor comprising the carburetor according to any one of claims 1 to 9.

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