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A variable-angle vortex generator (10) installed in an intake pipe (100) of an internal combustion engine includes a shaft seat (1), a plurality of vanes (2) and a position restoring mechanism (3). Each vane (2) is arranged radially with an interval apart from each other and pivotally coupled to the

A variable-angle vortex generator (10) installed in an intake pipe (100) of an internal combustion engine includes a shaft seat (1), a plurality of vanes (2) and a position restoring mechanism (3). Each vane (2) is arranged radially with an interval apart from each other and pivotally coupled to the shaft seat (1) and each vane (2) has a movable end (21) at an edge of the vane (2). The position restoring mechanism (3) is installed at the shaft seat (1) and includes a synchronizing element (31) for connecting each movable end (21). Each vane (2) is pushed by a fluid to produce a swing movement and let the fluid in the intake pipe (100) form a smooth vortex.

대표청구항 ▼

1. A variable-angle vortex generator, installed in an intake pipe (100) of an internal combustion engine, comprising: a shaft seat (1);a plurality of vanes (2), radially arranged with an interval apart from each other, and pivotally coupled to the shaft seat (1), and each vane (2) has a movable end

1. A variable-angle vortex generator, installed in an intake pipe (100) of an internal combustion engine, comprising: a shaft seat (1);a plurality of vanes (2), radially arranged with an interval apart from each other, and pivotally coupled to the shaft seat (1), and each vane (2) has a movable end (21) protruding from an edge of the vane (2) and an axle penetrating therein to be fixed to the shaft seat (1), the vane (2) being rotatable along the axle to do a swing movement so that each vane (2) inclines to form a gap between any adjacent two vanes (2) and has a first position and a second position when the plurality of vanes (2) not being pushed and pushed by a fluid, respectively, wherein an axial direction of the axle is not parallel to the fluid direction; anda position restoring mechanism (3), including a synchronizing element (31) where the movable end (21) being rotatably disposed therein,thereby when the fluid enters into the intake pipe (100), each vane (2) is pushed by the fluid to produce the swing movement along the axle to change to the second position, so that the fluid flows along an inclined angle of each vane (2) and through the gap between any two adjacent vanes (2) to generate a vortex, and when the plurality of vanes are not pushed by the fluid, each vane is pushed back to the first position by an elastic force of the position restoring mechanism (3). 2. The variable-angle vortex generator of claim 1, wherein the vanes (2) are arranged alternately with each other and overlapped with each other. 3. The variable-angle vortex generator of claim 1, further comprising a hollow casing (4) fixed into the intake pipe (100), and each vane (2) is pivotally coupled between the shaft seat (1) and the hollow casing (4). 4. The variable-angle vortex generator of claim 3, further comprising a plurality of fixing elements (5), a plurality of via holes (41) formed at the periphery of the hollow casing (4), a plurality of fixing holes (11) formed on the shaft seat (1) and corresponding to each via hole (41), and each vane (2) having a pivoting hole (22), and each fixing element (5) passing into each via hole (41) and each pivoting hole (22) being fixed to each fixing hole (11). 5. The variable-angle vortex generator of claim 4, wherein each fixing hole (11) has an internal thread (111), and each fixing element (5) has a head (51) disposed at an end of the fixing element (5) and an external thread (52) formed on the other end of the fixing element (5) and a pivot rod portion (53) formed between the head (51) and the external thread (52), and each head (51) is engaged in the hollow casing, and each external thread (52) is screwed to each corresponding internal thread (111), and each pivot rod portion (53) is pivotally coupled to each corresponding via hole (41) and each corresponding pivoting hole (22). 6. The variable-angle vortex generator of claim 5, wherein the hollow casing (4) includes a plurality of notches (42) formed at the external periphery of the hollow casing (4) and interconnected to via holes (41) respectively, and each head (51) is embedded into each notch (42). 7. The variable-angle vortex generator of claim 1, wherein the position restoring mechanism (3) installed at the shaft seat includes a spring (32) and a clamping element (33), and the clamping element (33) is fixed to the shaft seat (1), and the synchronizing element (31) is installed between the shaft seat (1) and the clamping element (33), and the spring (32) is clamped between the synchronizing element (31) and the clamping element (33). 8. The variable-angle vortex generator of claim 7, wherein the shaft seat (1) has a through hole (12) formed at an end of the shaft seat (1), and the synchronizing element (31) has a penetrating hole (311), and the spring (32) is a spiral spring (321), and the clamping element (33) has a protrusion (331), a passing rod (332) extended from the protrusion (331), a locking section (333) disposed at an end of the passing rod (332), and the passing rod (332) is passed through the spiral spring (321) and the penetrating hole (311), and the locking section (333) is fixed to the corresponding through hole (22), and the spiral spring (321) is clamped between the protrusion (331) and the synchronizing element (31). 9. The variable-angle vortex generator of claim 7, wherein the synchronizing element (31) has a circular groove (312) formed at the external periphery of the synchronizing element (31) and two retaining walls (313) formed on both sides of the circular groove (312) respectively, and each movable end (21) is accommodated in the circular groove (312) and retained between the two retaining walls (313), wherein when the fluid enters into the intake pipe (100), each vane (2) in the first position is pushed by the fluid to produce the swing movement along the axle so that the movable end (21) of the vanes (2) pushes the retaining walls (313) upward to space apart the synchronizing element (31) from the shaft seat (1), andwherein when no fluid enters into the intake pipe (100), each vane (2) in the second position rotates back to the first position and the synchronizing element (31) contacts the shaft seat (1) by the elastic force provided by the sprint (32) of the position restoring mechanism (3). 10. The variable-angle vortex generator of claim 7, wherein the synchronizing element (31) includes a circular wall (314) formed at the external periphery of the synchronizing element (31) and extended in a direction towards the clamping element (33), and a receiving groove (315) formed in the circular wall (314) for receiving the spring (32). 11. The variable-angle vortex generator of claim 3, wherein the hollow casing (1) is a circular cylindrical body. 12. The variable-angle vortex generator of claim 1, wherein an end surface of the shaft seat (1) away from the position restoring mechanism (3) is in the shape of a conical protrusion. 13. The variable-angle vortex generator of claim 1, wherein each vane (2) has an arc surface (23). 14. The variable-angle vortex generator of claim 13, wherein each arc surface (23) is a parabolic surface formed in a direction away from the movable end (21), and an opening of the parabolic surface is aligned towards the position restoring mechanism (3). 15. The variable-angle vortex generator of claim 3, wherein the hollow casing (4) includes a circular deflection block (43) extended from the internal periphery of the hollow casing (4) and corresponding to the vanes (2), and the circular deflection block (43) has a circular arc surface (44) with the internal periphery tapered in a direction away from the vanes (2).