WO2011000205A1

WO2011000205A1 - Carburetor with throttle standing-vortex rear fin

Info

Publication number: WO2011000205A1
Application number: PCT/CN2010/000735
Authority: WO
Inventors: 张龙
Original assignee: Zhang Long
Priority date: 2009-06-28
Filing date: 2010-05-24
Publication date: 2011-01-06
Also published as: CN201582010U

Abstract

A carburetor, attached with one standing-vortex rear fin (4) under or behind the plunger throttle (2) or diaphragm throttle (6) inside the carburetor body component (1). With the standing-vortex shedding and sweepback effect of the throttle standing-vortex rear fin (4) and the by-flowing of air to the low pressure area behind the throttle, the separation loss is reduced and the second rotation of the gas mixture is formed, thus increasing the power and the combustion efficiency of the engine and achieving the purpose of saving fuel.

Description

Throttle valve vortex tail carburetor

The invention belongs to the field of automobile and motorcycle engine parts, and relates to a throttle valve vortex tail carburetor. Background technique

At present, there are two forms of automobile and motorcycle engine carburetor: plunger type carburetor and equal vacuum diaphragm type carburetor. Regardless of the carburetor, its working principle relies on the vacuum generated by the movement of the engine piston to draw air from the carburetor inlet, and the pressure difference generated by the carburetor throttle throat makes the liquid fuel from the carburetor. The float chamber is sucked out, and is subjected to high-speed airflow impingement to form a mixed gas to enter the combustion chamber for combustion. However, due to the separation of the airflow caused by the vertical expansion of the outlet passage area of the carburetor throttle throat, the intake pressure of the combustion chamber is greatly lost, resulting in a decrease in engine power. Therefore, reducing intake pressure loss is an important factor in increasing engine power.

Summary of the invention

In order to reduce the intake pressure loss, the present invention provides a throttle vortex tail carburetor, which reduces the pressure loss caused by the airflow separation through the trapped vortex shedding effect of the throttle vortex tail fin, thereby causing the airflow pressure loss. Smaller into the combustion chamber.

The solution adopted by the present invention to solve the technical problem is: a triangular-shaped or dovetail-shaped station is arranged behind the plunger throttle (2) or the diaphragm throttle (6) in the carburetor body assembly (1). The vortex tail (4) is such that the lower bottom surface of the vortex empennage (4) is flush with the bottom surface of the plunger throttle (2) or the diaphragm throttle (6), and the root of the vortex empennage (4) is in close contact with the plunger On the rear wall of the throttle (2) or diaphragm throttle (6), one end of the connecting rod (5) is connected to the upper surface of the trapped empennage (4), and the other end of the connecting hole is inserted into the plunger throttle (2) ) or the rear wall of the diaphragm throttle (6), the oil needle (3) passes through the connecting hole on the connecting rod (5) to connect the trapped vortex tail (4) to the plunger throttle (2) or the diaphragm throttle (6) on the back wall. Thus, when the airflow enters from the air inlet (11) and passes through the throat (12), it does not directly enter the air outlet (13), but flows through the lower bottom surface of the trapped vortex (4), from the vortex tail ( 4) The two edge lines (7) on either side of the triangular piece or the two edge lines (7) in the dovetail shape are peeled off, and then enter the air outlet (13). Since the angle between the direction of the edge line (7) and the flow direction of the airflow is greatly reduced compared with the case of the edge without the 'tail, the airflow flow vortex vortex shedding backswept effect is generated, so the airflow pressure loss is greatly reduced. At the same time, the fuel is mixed with the airflow from the float chamber (10) in the carburetor body assembly (1), and the vortex formed by the trapped vortex shedding effect of the edge line (7) causes the oil-gas The degree of blending is increased. The reduction in gas flow pressure loss and the increase in oil-gas blending result in an increase in engine power and combustion efficiency, thereby achieving fuel saving.

The invention has the beneficial effects of reducing the oil flow pressure loss while increasing the oil-gas blending degree, and using the aerodynamic principle to change only the shape of the gas flow out of the throttle contact bottom edge, and the structure is simple. - BRIEF DESCRIPTION OF THE DRAWINGS

The invention will now be further described with reference to the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal sectional structural view showing a first embodiment of a throttle trap vortex fin carburetor.

Fig. 2 is a cross-sectional structural view of Fig. 1;

Figure 3 is a cross-sectional structural view of a second embodiment of a throttle-mounted vortex tail carburetor.

Figure 4 is a longitudinal cross-sectional structural view of a third embodiment of a throttle-mounted vortex tail carburetor.

Figure 2 is also a cross-sectional structural view of Figure 4 63⁄4.

Fig. 3 is also a cross-sectional structural view of a fourth embodiment of the throttle-mounted vortex tail carburetor.

Figure 5 is a longitudinal sectional structural view of a fifth embodiment of a throttle trapped flank carburetor.

Figure 7 is a transverse structural view of the underside of the throttle valve of Figure 5.

Figure 6 is a longitudinal cross-sectional structural view of a sixth embodiment of a throttle-mounted vortex tail carburetor.

Figure 8 is a transverse structural view of the bottom surface of the throttle valve of Figure 6.

Figure 9 is a longitudinal cross-sectional structural view of a seventh embodiment of a throttle-mounted vortex tail carburetor.

Figure 11 is a transverse structural view of the bottom surface of the throttle valve of Figure 9; '

Figure 10 is a longitudinal sectional structural view of an eighth embodiment of a throttle trapped flank carburetor.

Figure 12 is a transverse structural view of the bottom surface of the throttle valve of Figure 10;

Figure 13 is a cross-sectional structural view of a ninth embodiment of a throttle vortex tail carburetor.

Figure 14 is a cross-sectional structural view of a tenth embodiment of a throttle vortex tail carburetor.

Figure 15 is a cross-sectional structural view of an eleventh embodiment of a throttle trapped flank carburetor.

Figure 16 is a cross-sectional structural view of a twelfth embodiment of a throttle trapped flank carburetor.

Figure carburetor body assembly (1), plunger throttle (2), oil needle (3), vortex tail (4), connecting rod (5), diaphragm throttle (6), edge line (7 ), bevel (8), chute (9), float chamber (10), air inlet (11), throat (12), air outlet (13).

Detailed ways

In the first embodiment shown in Fig. 1, the trapped vortex fin (4) is a triangular piece disposed behind the plunger throttle (2), the lower bottom surface of the vortex empennage (4) and the plunger throttle (2) The bottom surface of the connecting rod (5) is connected to the upper surface of the trapped vortex fin (4), and the other end has a connecting hole, and one end of the connecting hole is inserted into the rear wall surface of the plunger throttle (2). The oil needle (3) is connected to the rear wall surface of the plunger throttle (2) through a connecting hole in the connecting rod (5). As shown in Fig. 2, the triangular-shaped trapped vortex empennage (4) has a triangular line whose root is close to the rear wall surface of the plunger throttle (2), and the root width is equal to the diameter of the plunger throttle (2). Or the width of the airway (13) channel, and the other two sides of the triangle form two edge lines (7) which may be straight lines, elliptical lines, arcs or streamline shapes, and triangular plate-shaped trapped vortex fins (4) The lower bottom surface is a curved surface or a flat surface.

In the second embodiment shown in Fig. 3, the trapped vortex tail (4) behind the plunger throttle (2) is a dovetail piece, and the two edge lines (7) formed by the two middle sides are from the middle. Separated to the two sides, respectively intersecting the two edge lines (7) formed by the other two sides extending rearward from both sides of the root.

In the third embodiment shown in Fig. 4, the vortex empennage (4) is a triangular piece disposed behind the diaphragm throttle (6), the lower bottom surface of the vortex tail (4) and the diaphragm section. The bottom surface of the valve (6) is flush, and one end of the connecting rod (5) is connected to the upper surface of the trapped vortex fin (4), and the other end has a connecting hole, Note that one end of the connecting hole is inserted into the rear wall surface of the diaphragm throttle (6), and the oil needle (3) passes through the connecting hole on the connecting rod (5) to connect the standing vortex tail (4) to the diaphragm throttle (6). On the back wall. As shown in Fig. 2, the triangular sheet-shaped trapped vortex fin (4) has a triangular side with the root of the circular arc line close to the rear wall surface of the diaphragm throttle (6), and the root width is equal to the diameter of the diaphragm throttle (6). Or the width of the airway (13) channel, the other two sides of the triangle also form two edge lines (7) which can be straight lines, elliptical lines, arcs or streamline shapes.

In the fourth embodiment shown in Fig. 3, the trapped vortex tail (4) behind the diaphragm throttle (6) is a dovetail piece, and the two edges (7) formed by the middle two sides are from the middle. Separated to the two sides, respectively intersecting the two edge lines (7) formed by the other two sides extending rearward from both sides of the root.

In the fifth embodiment shown in FIG. 5, the vortex tail fin (4) is integrated with the bottom surface of the plunger throttle (2), and the lower bottom surface of the vortex empennage (4) borrows the plunger throttle (2). The bottom half of the back. The inclined surface (8) is a plane or a curved surface formed by the rear half cylinder of the plunger throttle (2) inclined from the bottom surface to remove the quarter bottom edge, and the rear half cylinder has a slope (8) on each side, two The intersection of the bevel (8) and the bottom surface of the plunger throttle (2) forms the two edge lines (7) of the triangular trapped vortex (4). Figure 7 shows the integrated structure of the vortex empennage (4) and the plunger throttle (2). The first half is the bottom of the plunger throttle (2), and the rear half is the bottom of the plunger throttle (2) and the lower bottom of the trapped vortex (4).

In the sixth embodiment shown in Fig. 6, the vortex tail fin (4) is integrated with the bottom surface of the diaphragm throttle (6), and the diaphragm bottom throttle (4) is borrowed from the lower bottom surface of the vortex empennage (4). The bottom half of the back. The bevel (8) is the plane or curved surface formed by the rear half cylinder of the diaphragm throttle (6) which is inclined upward from the bottom surface to remove the quarter bottom edge. The rear half cylinder has a slope (8) on each side of the cylinder. The intersection of the bevel (8) and the bottom surface of the diaphragm throttle (6) forms the two edge lines (7) of the triangular trapped empennage (4). Figure 8 shows the integrated structure of the vortex tail (4) and the diaphragm throttle (6). The first half is the bottom surface of the diaphragm throttle (6), and the rear half is the bottom surface of the diaphragm throttle (6) and the lower bottom surface of the trapped vortex wing (4).

In the seventh embodiment shown in Fig. 9, the vortex empennage (4) is integrated with the bottom surface of the plunger throttle (2), and the lower bottom surface of the vortex empennage (4) borrows a plunger throttle (2). The bottom surface. The chute (9) is a front narrow and wide flank of the plunger throttle (2), and the chute (9) forms two sides on the bottom surface of the plunger throttle (2). The dovetail forms two edge lines (7) in the middle of the vortex tail (4). The integrated structure of the vortex empennage (4) and the plunger throttle (2) as shown in Fig. 11 is shown. The bottom surface is both the bottom surface of the plunger throttle (2) and the lower bottom surface of the trapped vortex fin (4).

In the eighth embodiment shown in Fig. 10, the vortex empennage (4) is integrated with the bottom surface of the diaphragm throttle (6), and the diaphragm bottom throttle (6) is borrowed from the lower surface of the vortex empennage (4). The bottom surface. The chute (9) is a front narrow and wide flank of the diaphragm throttle (6), and the chute (9) forms two sides on the bottom surface of the diaphragm throttle (6). Two edge lines (7) in the middle of the dovetail shaped vortex tail (4). The integrated structure of the trapped vortex fin (4) and the diaphragm throttle (6) as shown in Fig. 12 is shown. The bottom surface is both the bottom surface of the diaphragm throttle (6) and the lower bottom surface of the trapped vortex fin (4). In the ninth embodiment shown in FIG. 13, the cylindrical cross section and the bottom surface of the plunger throttle (2) are designed to be elliptical, and the rear half-ellipse of the bottom surface naturally forms a front wide and a narrow design integrated triangular station. The vortex fin (4) and the edge of the rear half-ellipse of the bottom surface form the two edge lines (7) of the trapped vortex fin (4).

In the tenth embodiment shown in FIG. 14, the cross-section and the bottom surface of the diaphragm throttle (6) are designed to be elliptical, and the rear half-ellipse of the bottom surface naturally forms a front-width, narrow-narrow design integrated triangular trap. The empennage (4), the edge of the rear half-ellipse of the bottom surface, forms the two edge lines (7) of the trapped vortex fin (4).

In the eleventh embodiment shown in FIG. 15, the cylindrical cross section and the bottom surface of the plunger throttle (2) are designed to be convex and round, and the rear half convex circle of the bottom surface naturally forms a front wide and a narrow design integrated. The triangular trapped vortex fin (4), the edge of the rear semi-convex circle of the bottom surface constitutes the two edge lines (7) of the trapped vortex fin (4).

In the twelfth embodiment shown in FIG. 16, the cross section and the bottom surface of the diaphragm throttle (6) are designed to be convex and round, and the rear half convex circle of the bottom surface naturally forms a front wide and a narrow design integrated. The triangular trapped vortex fin (4), the edge of the rear semi-convex circle of the bottom surface constitutes the two edge lines (7) of the trapped vortex fin (4).

Claims

.1. A throttle-mounted vortex tail carburetor, characterized in that: in the carburetor body assembly (1), the plunger throttle (2) or the diaphragm throttle (6) is followed by a triangular sheet The lower end of the trapped vortex tail (4) is flush with the bottom surface of the throttle vortex (4), and one end of the connecting rod (5) is connected to the upper surface of the vortex empennage (4), and the other end of the connecting hole is inserted. On the rear wall of the throttle, the oil needle (3) passes through the connecting hole on the connecting rod (5) to connect the standing vortex tail (4) to the rear wall surface of the throttle, and the root of the triangular trapped vortex (4) is closely attached to one side. On the rear wall of the throttle, the root width is equal to the diameter of the throttle or the width of the passage of the air outlet (13), and the other two sides form two edge lines which may be straight lines, elliptical lines, arcs or streamlined shapes ( 7) The lower bottom surface of the trapped vortex fin (4) is a curved surface or a flat surface.

2. The throttle vortex tail carburetor according to claim 1, wherein: in the carburetor body assembly (1), behind the plunger throttle (2) or the diaphragm throttle (6) is a The dovetail-shaped vortex empennage (4), the dovetail-shaped vortex empennage (4) The two edge lines (7) formed by the two middle sides are separated from the middle to the sides, respectively, and extend backward from both sides of the root The two edge lines (7) formed by the other two sides intersect.

3. The throttle valve vortex tail carburetor according to claim 1, wherein: the slope (8) is a plunger throttle (2) or the rear half cylinder of the diaphragm throttle (6) is inclined from the bottom surface Remove the plane or curved surface formed by the edge of the bottom of the quarter. The rear half of the cylinder has a slope (8), two slopes (8) and the plunger throttle (2) or the diaphragm throttle.

The intersection line of the bottom surface of (6) constitutes the two edge lines (7) of the triangular trapped vortex fin (4).

4. The valve vortex tail carburetor according to claim 1, wherein: the chute (9) is a front side of the plunger throttle (2) or the diaphragm throttle ('6). a narrow rear wide horn chute, the two sides of the chute (9) on the bottom surface of the plunger throttle (2) or the diaphragm throttle (6) form the two in the middle of the dovetail shaped vortex tail (4) Edge line (7).

5. The throttle vortex tail carburetor according to claim 1, wherein: a cylindrical throttle cross section and a bottom surface of the plunger throttle (2) or the diaphragm throttle (6) are elliptical, The rear half-ellipse of the bottom surface naturally forms a triangular-shaped vortex empennage (4) with a front wide and a narrow design integrated, and the edge of the rear half-ellipse of the bottom surface constitutes two edge lines (7) of the vortex empennage (4).

6. The throttle valve vortex tail carburetor according to claim 1, wherein: the piston throttle, the door (2) or the diaphragm throttle (6) have a cylindrical cross section and a bottom surface designed to be convex The shape of the bottom half of the bottom surface naturally forms a front wide and narrow design integrated triangular trapped vortex tail (4), and the edge of the rear half of the bottom convex circle constitutes the two edge lines (7) of the trapped vortex tail (4).