CN210460897U

CN210460897U - Carburetor, micro engine and model car

Info

Publication number: CN210460897U
Application number: CN201921544398.XU
Authority: CN
Inventors: 滕俊宇
Original assignee: Baicang Power Technology (shenzhen) Co Ltd
Current assignee: Baicang Power Technology (shenzhen) Co Ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-05-05
Anticipated expiration: 2029-09-17

Abstract

The utility model discloses a carburetor, a miniature engine and a model car, wherein the carburetor comprises a carburetor body, an oil nozzle, an air valve column, a first oil needle and an accelerator rocker arm; the oil nozzle and the first oil needle penetrate into the carburetor body from two opposite sides of the carburetor body respectively; the air door column is sleeved on the first oil needle and is provided with a through hole along the radial direction; the carburetor body is provided with an air inlet and a gas outlet, and the air inlet, the through hole and the gas outlet are communicated in sequence; the air valve column and the first oil needle are both connected with an accelerator rocker arm arranged outside the carburetor body, and the accelerator rocker arm is used for driving the air valve column and the first oil needle to rotate around the axial direction of the air valve column and move along the axial direction of the air valve column. The utility model discloses a carburetor overall structure is simple, has reduced the manufacturing degree of difficulty of micro engine, has consequently reduced manufacturing cost.

Description

Carburetor, micro engine and model car

Technical Field

The utility model relates to an internal-combustion engine field, concretely relates to carburetor, micro-engine and model car.

Background

The carburetor is an important accessory around engine, and is a device mounted on the air intake channel of engine, and its function is to mix fuel oil and air according to a certain proportion and atomize them, and feed the atomized fuel oil and air into the combustion chamber of engine, then burn them to produce power.

The existing carburetor comprises a carburetor body, a choke valve vacuum controller, an electromagnetic idle closing valve, a vacuum control thickening plunger, a floater, an oil inlet needle valve, an accelerating pump transmission rod, an accelerating pump control rod, an accelerating pump push rod, an idle air quantity hole, a main cavity idle quantity hole, a screw plug, a main cavity main quantity hole, a thickening valve, a baffle, an auxiliary cavity main quantity hole, a main cavity air compensation quantity hole, a main cavity emulsified foam pipe, an auxiliary cavity vacuum controller, an air conditioner vacuum controller, an operation cable support, a throttle valve operation rocker arm, an idle speed adjusting screw and other parts, and is complex in structure and multiple in parts.

However, for some model cars with smaller volume requirements, the complicated carburetor greatly increases the difficulty of production and manufacture and also increases the manufacturing cost.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a carburetor, aim at solving the big problem of the carburetor manufacturing degree of difficulty of complicated structure among the prior art.

In order to achieve the above object, the present invention provides a carburetor, which includes a carburetor body, an oil nozzle, an air valve post, a first oil needle and an accelerator rocker arm; the oil nozzle and the first oil needle respectively penetrate into the carburetor body from two opposite sides of the carburetor body, and the needle tip of the first oil needle can be inserted into one end, facing the first oil needle, of the oil nozzle; the air door column is sleeved on the first oil needle, the outer wall of the air door column is attached to the inner cavity of the carburetor body, the air door column is radially provided with a through hole, and one end, facing the first oil needle, of the oil nozzle is located in the through hole of the air door column; the carburetor body is provided with an air inlet communicated with an air source and a gas outlet communicated with an engine combustion chamber, and the air inlet, the through hole and the gas outlet are sequentially communicated; the air valve column and the first oil needle are both connected with an accelerator rocker arm arranged outside the carburetor body, and the accelerator rocker arm is used for driving the air valve column and the first oil needle to move along the axial direction of the air valve column.

Preferably, the carburetor also comprises an idle speed adjusting knob which is arranged on the carburetor body and is perpendicular to the central shaft of the air door column, a slot is formed in the side face, close to the idle speed adjusting knob, of the air door column, and the tail end of the idle speed adjusting knob can be inserted into the slot.

Preferably, the carburetor also comprises a conical spring arranged in the carburetor body, and two ends of the conical spring are respectively abutted against the inner wall of the carburetor body and one end, facing the fuel injection nozzle, of the throttle column.

Preferably, the idle adjustment knob terminates in a tapered configuration.

Preferably, the slot is disposed at an acute included angle with respect to the idle speed adjustment knob.

Preferably, the idle speed adjusting knob is sleeved with a spring, and two ends of the spring are respectively abutted to the carburetor body and the head of the idle speed adjusting knob.

Preferably, one end of the oil nozzle, which is positioned outside the carburetor body, is provided with an oil needle seat and a second oil needle, which is positioned in the oil needle seat, the second oil needle is arranged along the axial direction of the oil needle seat, the upper end of the second oil needle is in threaded connection with the oil needle seat, and the lower end of the second oil needle can be inserted into an oil inlet hole, which is arranged along the axial direction, in the oil needle seat; an oil inlet nozzle communicated with the oil inlet hole is arranged on the oil needle seat.

The utility model discloses still provide a micro-engine, this micro-engine includes the carburetor of above arbitrary one.

The utility model discloses still provide a model car, this model car includes foretell micro-engine.

The utility model discloses all be connected throttle post and first oil needle with the throttle rocking arm, make the throttle rocking arm simultaneously with keep the synchronous adjustment to advancing oil mass and air input, improved the accurate control to air and fuel mixture ratio, moreover, the utility model discloses a carburetor overall structure is simple, has reduced micro engine's the manufacturing degree of difficulty, consequently has reduced manufacturing cost.

Drawings

FIG. 1 is a schematic view of a carburetor according to an embodiment of the present invention;

FIG. 2 is a schematic view of a carburetor according to the present invention;

FIG. 3 is a schematic view of a partial structure of the carburetor of the present invention;

FIG. 4 is a schematic view of the carburetor body of FIG. 1 from a perspective;

FIG. 5 is a schematic view of the carburetor body of FIG. 1 from a further perspective.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same elements or elements having the same function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

The utility model provides a carburetor, as shown in figures 1-5, comprising a carburetor body 1, an oil nozzle 2, an air door column 3, a first oil needle 4 and an accelerator rocker arm 5; the fuel injection nozzle 2 and the first fuel needle 4 respectively penetrate into the carburetor body 1 from two opposite sides of the carburetor body 1, the needle tip end of the first fuel needle 4 can be inserted into one end of the fuel injection nozzle 2 facing the first fuel needle 4 along the axial direction of the fuel injection nozzle, the air door column 3 is sleeved on the first fuel needle 4 and is coaxial with the first fuel needle 4, the outer wall of the air door column 3 is attached to the inner cavity of the carburetor body 1, the air door column 3 is provided with a through hole 31 along the radial direction, one end of the fuel injection nozzle 2 facing the first fuel needle 4 is positioned in the through hole 31 of the air door column 3, the carburetor body 1 is provided with an air inlet 11 communicated with an air source and a gas outlet 12 communicated with a cylinder combustion chamber of an engine, the air inlet 11 and the gas outlet 12 are coaxial and parallel to the axial direction of the through hole 31, the air inlet 11, the through hole 31 and the gas outlet 12 are sequentially communicated, the air door column 3 and the first fuel needle 4 are both connected with an accelerator, the throttle rocker arm 5 is used for driving the throttle column 3 and the first oil needle 4 to jointly rotate around the axial direction of the throttle column 3 and move along the axial direction of the throttle column 3.

In this embodiment, the carburetor body 1 is an atomizer body, and has an atomizing chamber 13, an air inlet 11 communicated with the atomizing chamber 13, an air outlet 12, a first through hole 14 for the fuel nozzle 2 to penetrate into the atomizing chamber 13, and a second through hole 15 for the air gate post 3 to penetrate into the atomizing chamber 13, wherein the air inlet 11 is communicated with an air source, the air source can adopt an air compressor or the like, and the air outlet 12 is used for inputting the mixed gas obtained by mixing and atomizing the air and the fuel (such as alcohol, methanol, gasoline, diesel oil and the like) in the atomizing chamber 13 into the combustion chamber of the engine. The fuel spray nozzle 2 and the air door column 3 are preferably horizontally arranged, and penetrate into the atomization cavity 13 through the first through hole 14 and the second through hole 15 respectively at the left side and the right side of the carburetor body 1, and the first fuel needle 4 is further arranged in the air door column 3. Wherein, the needle point of first oil needle 4 is towards fuel sprayer 2, and this needle point is the toper structure, and the needle point of first oil needle 4 (be located atomizing chamber 13 promptly and towards the one end of fuel sprayer 2) can be inserted to the fuel sprayer 2 in, and throttle rocking arm 5 is connected to the other end of first oil needle 4, and throttle rocking arm 5 accessible is adjusted the needle point of first oil needle 4 and is inserted the degree of depth to fuel sprayer 2 to the annular space size that forms between the needle point of control fuel sprayer 2 and first oil needle 4, thereby control the oil output (the speed of producing oil).

The air door column 3 is attached to the inner wall of the atomization cavity 13, the air door column 3 is provided with a through hole 31 along the radial direction, and the through hole 31 is sequentially communicated with the air inlet 11 and the air outlet 12 to form an air path. The oil nozzle 2 in the through hole 31 forms an oil path with the through hole 31 and the gas outlet 12. Air can enter from the air inlet 11, pass through the through holes 31 on the air door post 3 and then be discharged from the air outlet 12. The air door column 3 is further connected with an accelerator rocker arm 5, namely the air door column 3 and the first oil needle 4 are controlled by the accelerator rocker arm 5, so that the air door column 3 and the first oil needle rotate along the axis of the air door column 3 simultaneously and advance or retreat along the axial direction of the air door column, namely move along with the rotation, when the through hole 31 of the air door column 3 is aligned with the air inlet 11, the amount of air entering the through hole 31 is the largest, and when the through hole 31 of the air door column 3 is staggered (vertically staggered or horizontally staggered) with the air inlet 11, the amount of air entering the through hole 31 is reduced along with the increase of the staggered area of the through hole 31 and the air inlet. Accordingly, the closer the distance between the first needle 4 and the oil jet 2, the smaller the amount of oil entering the through hole 31, and the farther the distance between the first needle 4 and the oil jet 2 (until it comes off the oil jet 2), the larger the amount of oil entering the through hole 31.

The utility model discloses all be connected air door post 3 and first oil needle 4 with throttle rocking arm 5, make throttle rocking arm 5 simultaneously with keep to advancing the synchronous adjustment of oil mass and air input, improved the accurate control to air and fuel oil mixing ratio. Moreover, the utility model discloses a carburetor overall structure is simple, has reduced the manufacturing degree of difficulty of micro-engine, has consequently reduced manufacturing cost.

In a preferred embodiment, as shown in fig. 1, the carburetor further includes an idle adjustment knob 6 disposed on the carburetor body 1 and perpendicular to the central axis of the throttle post 3, the side of the throttle post 3 adjacent to the idle adjustment knob 6 is provided with a slot 32, and the end of the idle adjustment knob 6 can be inserted into the slot 32.

In this embodiment, carburetor idle is the most common engine operating condition for engine warm start processes and non-stop engine stops, etc., requiring little and rich mixture, i.e., a higher fuel to air ratio, to minimize engine power. For manual adjustment, the idle adjustment knob 6 is preferably inserted vertically into the carburetor body 1 from above the carburetor body 1 downward. The end of the idle adjustment knob 6, that is, the lower end thereof, is inserted into the carburetor body 1.

In this embodiment, the slot 32 has a certain width, and after the end of the idle speed adjustment knob 6 is inserted into the slot 32 and fixed in position, when the throttle cylinder 3 is driven to rotate by the throttle rocker 5 and moves toward the fuel injection nozzle 2, the idle speed adjustment knob 6 limits the maximum forward movement distance of the throttle cylinder, that is, the maximum distance between the through hole 31 of the throttle cylinder 3 and the air inlet 11 (i.e., the minimum intake air amount) and the minimum distance between the first fuel needle 4 and the fuel injection nozzle 2 (i.e., the minimum fuel intake amount). Because the engine needs a larger starting speed when being started, the arrangement of the slot 32 aims to provide a certain moving space for the throttle column 3, and when the idle speed adjusting knob 6 is fixed, the throttle column 3 and the first oil needle 4 can be adjusted in position through the throttle rocker arm 5, so that the engine can be started at a higher gas-oil ratio.

In a preferred embodiment, the carburetor further includes a conical spring 16 disposed in the carburetor body 1, and both ends of the conical spring 16 are respectively abutted against the inner wall of the carburetor body 1 and one end of the air valve post 3 facing the fuel injector 2.

The conical spring 16 is sleeved on the fuel injection nozzle 2, the conical bottom surface of the conical spring faces the outside of the carburetor body 1 and is abutted against the inner wall of the carburetor body 1, the other end of the conical spring 16 faces the first fuel needle 4 and is inserted into the air door column 3, and the inner diameter of the air door column 3 is smaller than the outer diameter of the conical bottom surface of the conical spring 16, so that the end of the conical spring 16 can be abutted against the air door column 3. When the air door column 3 moves towards the direction of the oil nozzle 2, the conical spring 16 is compressed, when the driving force on the accelerator rocker arm 5 is cancelled, the air door column 3 circles round under the resilience force action of the conical spring 16 and moves away from the oil nozzle 2, in the process, the distance between the through hole 31 of the air door column 3 and the air inlet 11 is reduced, the air intake is increased, and meanwhile, the distance between the first oil needle 4 and the oil nozzle 2 is increased, and the oil inlet amount is increased. At this time, the idle speed adjustment knob 6 is used to define the maximum intake air amount and the maximum fuel intake amount.

Preferably, as shown in fig. 3, the end of the idle adjustment knob 6 is tapered, and/or the slot 32 extends in a direction inclined with respect to the central axis of the mast 3 to dispose the idle adjustment knob 6.

The tail end of the idle speed adjusting knob 6 adopts a conical structure, so that when the idle speed adjusting knob is inserted into the open slot 32 deeper, the idle speed position correspondingly moves to the left, the air inflow is larger and the oil inflow is reduced during idle speed, and the engine power in an idle speed state is increased; on the contrary, when the tail end of the idle speed adjusting knob 6 is inserted into the slot 32 more shallowly, the idle speed position correspondingly moves to the right, so that the air inflow is smaller and the oil inflow is increased during idle speed, and the engine power in the idle speed state is reduced.

The slot 32 is arranged obliquely, i.e. it is arranged at an acute angle to the axial direction of the idle speed adjustment knob 6, and similarly, the idle position changes correspondingly and the engine power in the idle state changes correspondingly with the depth of the idle speed adjustment knob 6 inserted into the slot 32. The conical structure design of the end of the idle adjustment knob 6 and the inclined design of the slot 32 are both designed to enable the idle adjustment knob 6 to adjust the idle position through radial movement relative to the air valve post 3, so as to obtain a more suitable output power of the engine in the idle state.

In a preferred embodiment, as shown in fig. 1, the idle adjustment knob 6 is screwed to the carburetor body 1, and the idle adjustment knob 6 is screwed to the carburetor body 1 to move up and down relative to the carburetor body 1 along the axial direction of the idle adjustment knob 6.

In a preferred embodiment, as shown in fig. 1, the idle adjustment knob 6 is sleeved with a spring 7, and two ends of the spring 7 are respectively abutted against the carburetor body 1 and the head of the idle adjustment knob 6. The spring 7 is always in contact with the head portions (i.e., the head portions of the screws) of the carburetor body 1 and the idle adjustment knob 6, that is, in a compressed state, and when the idle adjustment knob 6 is adjusted up and down, the spring 7 increases the frictional force between the idle adjustment knob 6 and the carburetor body 1, thereby restricting the flexibility of the idle adjustment knob 6 and preventing erroneous operation and excessive operation.

In a preferred embodiment, as shown in fig. 1-3, an oil needle seat 8 and a second oil needle 9 located in the oil needle seat 8 are provided at one end of the oil nozzle 2 located outside the carburetor body 1, the second oil needle 9 is arranged along the axial direction of the oil needle seat 8, the upper end of the second oil needle 9 is in threaded connection with the oil needle seat 8, and the lower end thereof can be inserted into an oil inlet hole axially arranged in the oil needle seat 8; the oil needle base 8 is provided with an oil inlet nozzle 10 communicated with the oil inlet hole.

In this embodiment, the fuel enters from the fuel inlet nozzle 10, sequentially passes through the gap between the fuel inlet hole and the lower end of the second fuel pin 9, the fuel inlet hole, and the fuel injection nozzle 2, is discharged from the fuel outlet of the fuel injection nozzle 2, and is mixed with the air and atomized to form a mixed gas under the injection of the air. The second oil needle 9 can realize the relative displacement between the second oil needle 9 and the oil needle seat 8 in the axial direction through screwing, namely the depth of the second oil needle 9 inserted into the oil inlet hole is adjusted, the needle tip of the second oil needle 9 is of a conical structure, the deeper the needle tip of the second oil needle 9 is inserted into the oil inlet hole, the smaller the distance between the needle tip of the second oil needle 9 and the inner wall of the oil inlet hole is, the smaller the width of the formed annular gap is, so that the oil inlet amount is reduced, the first-step oil amount control on the oil inlet amount can be realized by matching the second oil needle 9 and the oil needle seat 8, and the double-step oil amount control on the oil inlet amount can be realized by combining the second-step oil amount control formed by matching the second oil needle 9 and the.

The utility model also provides a miniature engine, including the carburetor in any one of the above embodiments, the carburetor at least includes a carburetor body 1, an oil nozzle 2, an air door column 3, a first oil needle 4 and an accelerator rocker arm 5; the fuel injection nozzle 2 and the first fuel needle 4 are respectively inserted into the carburetor body 1 from two opposite sides of the carburetor body 1, the needle tip end of the first oil needle 4 can be inserted into an oil outlet of the oil nozzle 2 along the axial direction of the oil nozzle 2, the air door column 3 is sleeved on the first oil needle 4, the outer wall of the air door column 3 is attached to the inner cavity of the carburetor body 1, the air door column 3 is provided with a through hole 31 along the radial direction, the oil outlet of the oil nozzle 2 is located in the through hole 31 of the air door column 3, the carburetor body 1 is provided with an air inlet 11 communicated with an air source and an air outlet 12 communicated with a cylinder combustion chamber of the micro engine, the air inlet 11 and the air outlet 12 are coaxially arranged in parallel to the axial direction of the through hole 31, the air door column 3 and the first oil needle 4 are both connected with an accelerator rocker arm 5 arranged outside the carburetor body 1, and the accelerator rocker arm 5 is used for driving the air door column 3 and the first oil needle 4 to move along the.

The micro-engine in this embodiment mainly is applied to the model car, the model motorcycle, the toy car is the same as the volume less and to the higher automobile starting system of cost control requirement, the utility model discloses air door post 3 and first oil needle 4 in the carburetor all are connected with throttle rocking arm 5, make it control simultaneously and advance oil quantity and air input, reduced the complicated structure of controlling respectively advancing oil quantity and air input on the whole, can also keep the synchronous adjustment to advancing oil quantity and air input, improved the accurate control to air and fuel mixing ratio, this carburetor has both satisfied micro-engine's performance, thereby the overall structure of having simplified micro-engine again has controlled micro-engine's the manufacturing degree of difficulty and cost, consequently especially adapted use in the starting system of model car.

The utility model also provides a model car, this model car volume is real car relatively will be little, miniature engine in the above-mentioned embodiment is adopted with its engine, the corresponding carburetor that adopts among the aforesaid embodiment of carburetor in the miniature engine, this carburetor passes through second oil needle 9, first oil needle 4 is controlled the oil feed volume, adjust the oil feed volume of fuel sprayer 2 and air inlet 11's air input simultaneously through throttle rocking arm 5, thereby carry out accurate control to the gas-oil ratio, make this carburetor applicable in multiple fuel, like alcohol, methyl alcohol, petrol, diesel oil etc., moreover because this carburetor simple structure, it becomes to produce the system and causes this cheap, consequently, the manufacturing cost of this model car has been reduced.

The above is only the part or the preferred embodiment of the present invention, no matter the characters or the drawings can not limit the protection scope of the present invention, all under the whole concept of the present invention, the equivalent structure transformation performed by the contents of the specification and the drawings is utilized, or the direct/indirect application in other related technical fields is included in the protection scope of the present invention.

Claims

1. A carburetor is characterized by comprising a carburetor body, an oil nozzle, an air valve column, a first oil needle and an accelerator rocker arm;

the oil nozzle and the first oil needle respectively penetrate into the carburetor body from two opposite sides of the carburetor body, and the needle tip of the first oil needle can be inserted into one end, facing the first oil needle, of the oil nozzle; the air door column is sleeved on the first oil needle, the outer wall of the air door column is attached to the inner cavity of the carburetor body, the air door column is provided with a through hole along the radial direction, and one end, facing the first oil needle, of the oil nozzle is located in the through hole of the air door column;

the carburetor body is provided with an air inlet communicated with an air source and a gas outlet communicated with an engine combustion chamber, and the air inlet, the through hole and the gas outlet are sequentially communicated; the air valve column and the first oil needle are both connected with an accelerator rocker arm arranged outside the carburetor body, and the accelerator rocker arm is used for driving the air valve column and the first oil needle to jointly rotate around the axial direction of the air valve column and move along the axial direction of the air valve column.

2. The carburetor of claim 1, further comprising an idle adjustment knob disposed on the carburetor body and perpendicular to the central axis of the throttle post, the side of the throttle post adjacent the idle adjustment knob having a slot into which a distal end of the idle adjustment knob is insertable.

3. The carburetor of claim 2, further comprising a conical spring disposed within the carburetor body, both ends of the conical spring abutting an inner wall of the carburetor body and an end of the throttle post facing the fuel injector, respectively.

4. A carburetor according to claim 2, wherein the idle adjustment knob terminates in a tapered configuration.

5. A carburetor according to claim 2, wherein said slot is disposed at an acute included angle relative to said idle adjustment knob.

6. A carburettor according to claim 2 wherein the idle adjustment knob is spring loaded and both ends of the spring abut the carburettor body and the head of the idle adjustment knob respectively.

7. The carburetor of claim 1, wherein the end of the fuel injector located outside the carburetor body is provided with a fuel needle seat and a second fuel needle located inside the fuel needle seat, the second fuel needle is arranged along the axial direction of the fuel needle seat, the upper end of the second fuel needle is in threaded connection with the fuel needle seat, and the lower end of the second fuel needle can be inserted into an oil inlet hole axially arranged inside the fuel needle seat; and an oil inlet nozzle communicated with the oil inlet hole is arranged on the oil needle seat.

8. A miniature engine comprising a carburettor as claimed in any one of claims 1 to 7.

9. A model vehicle comprising the microengine of claim 8.