Liquid cooling device for saddle-type vehicle

Abstract

The present application relates to a liquid cooling device for a saddle type vehicle, the power system of the vehicle is provided with the liquid cooling device in the width direction of the vehicle body; the liquid cooling device has a fan and a radiator, and a flow guide member arranged between the fan and the radiator; the fan has a plurality of blades, the fan is driven to rotate by the power system, and after the fan is driven to rotate, the inner peripheral track and the outer peripheral track are generated at the two ends of the blades; the radiator has at least a heat dissipation part, the heat dissipation part corresponds to the blades of the fan, the fan and the radiator of the liquid cooling device are arranged so that the rear end of the outer peripheral track of the blades of the fan in the longitudinal direction of the vehicle body is more offset to the rear than the rear end of the central part of the heat dissipation part of the radiator; the flow guide member has an air inlet and an air outlet, the air outlet is equivalent to or slightly smaller than the outer peripheral track of the blades, the flow guide member is arranged at the front side of the vehicle, and the flow guide member has a deflection part from the air inlet to the fan side; the cooling effect of the liquid cooling device of the vehicle at idle speed is improved, and the cooling effect of the vehicle during driving is improved.

Description

Technical Field

[0001] This invention relates to a liquid cooling device for a saddle-type vehicle, and more particularly to a liquid cooling device for a saddle-type vehicle that can improve the cooling effect of the liquid cooling device by increasing the air guide area on the air inlet side of the air guide member. Background Technology

[0002] In order to enable the vehicle to have a larger lean angle when cornering, straddle-type vehicles will have the cooling water tank and cooling fan offset in design. In the field of cooling water tank and cooling fan technology, the applicant has applied for utility model patent No. TWM610118. This patent can enable the vehicle to have a better lean angle and improve the cooling effect of the cooling device.

[0003] like Figure 1 , 2 As shown in Figure 3, where Figure 3 The arrows in the diagram indicate the direction of the vehicle's front. This patent design offsets the coolant tank A and the radiator fan B along the longitudinal direction of the vehicle body. Consequently, the airflow guide C, located between the coolant tank A and the radiator fan B, must also be offset. Specifically, the air inlet C1 and air outlet C2 of the airflow guide C are located on the outer edge of the rotation path of the radiator fan B's blades. The airflow guide C forms an annular guide portion C3 at an angle from the air inlet C1 towards the air outlet C2. Due to the offset of the radiator fan B, the air inlet C1 and air outlet C2 of the airflow guide C must also be offset, resulting in the air inlet C1 of the airflow guide C being offset to one side. A planar stagnation zone C4 is formed on one side of the cooling fan B. Accordingly, when the external cooling air is cooled by the negative pressure generated by the operation of the cooling fan B, it enters the cooling part A1 of the cooling water tank A and cools the cooling part A1. Then, it is discharged from the air inlet C1 of the guide member C towards the air outlet C2, thereby achieving the purpose of cooling the cooling water tank A. However, when viewed from the side of the vehicle body, a part of the cooling part A1 of the cooling water tank A overlaps with the stagnation zone C4 of the guide member C. The guiding effect of the stagnation zone C4 of the guide member C is not good, so the cooling effect of the overlapping part of the cooling part A1 of the cooling water tank A and the stagnation zone C4 of the guide member C is also affected.

[0004] Therefore, how to provide a liquid cooling device for saddle-type vehicles to enable better cooling and heat dissipation has become an urgent issue for vehicle manufacturers. Summary of the Invention

[0005] The problem that the invention aims to solve.

[0006] The main objective of this invention is to provide a liquid cooling device for saddle-type vehicles, thereby improving the cooling effect of the vehicle's liquid cooling system.

[0007] Technical means to solve the problem

[0008] Therefore, the present invention provides a liquid cooling device for a saddle-type vehicle, the vehicle including at least a power system supported on a frame unit and used to drive the vehicle, the power system having a liquid cooling device disposed in the width direction of the vehicle body; the liquid cooling device having a fan and a radiator, and a guide member disposed between the fan and the radiator; the fan having multiple blades, the fan being driven to rotate by the power system, and the blades having inner circumferences at both the inner and outer ends after the fan is rotated. The radiator has at least a heat dissipation section, which is slightly corresponding to the blades of the fan. The fan and the radiator of the liquid cooling device are arranged such that the rear end of the outer peripheral trajectory of the fan blades in the longitudinal direction of the vehicle body is offset further rearward than the rear end of the central portion of the heat dissipation section of the radiator. The air guide has at least an air inlet and an air outlet, the air outlet being roughly the same size as or slightly smaller than the outer peripheral trajectory of the blades. The air guide has a deflection portion formed on the front side of the vehicle from the air inlet toward the fan side.

[0009] Therefore, in some embodiments of the present invention, a liquid cooling device for a saddle-type vehicle is provided, wherein the biasing portion is formed from the air inlet located on the front side of the vehicle and inclined toward the air outlet to form a biasing air guide surface.

[0010] Therefore, in some embodiments of the present invention, a liquid cooling device for a saddle-type vehicle is provided, wherein the biased portion has a biased air guide surface; an inclined guide portion is provided between the air inlet and the air outlet; and the air guide length of the biased air guide surface is greater than the guide length of the guide portion.

[0011] Therefore, in some embodiments of the present invention, a liquid cooling device for a saddle-type vehicle is provided, wherein the biased portion has a biased air guide surface; an inclined guide portion is provided between the air inlet and the air outlet; and when viewed from the side of the vehicle, with the center point of the fan as the dividing point, the front guide area formed by the outer edge of the biased air guide to the center point of the fan is greater than the rear guide area formed by the outer edge of the guide portion to the center point of the fan.

[0012] Therefore, in some embodiments of the present invention, a liquid cooling device for a saddle-type vehicle is provided, wherein the biased portion has a biased air guide surface; viewed from the side of the vehicle, the air inlet overlaps with the heat dissipation portion of the radiator via the biased air guide surface extending to one side.

[0013] Therefore, in some embodiments of the present invention, a liquid cooling device for a saddle-type vehicle is provided, wherein the heat dissipation portion of the radiator is largely covered by the air inlet, which includes the front guide area formed by the biased air guide surface.

[0014] [The effects of the invention]

[0015] The advantages of this invention are: it effectively increases the airflow area on the air inlet side of the air guide, and improves the cooling effect of the liquid cooling device when the vehicle is idling, and further improves the cooling effect when the vehicle is driving.

[0016] The effect achieved by this invention is that it can increase the flow guiding area of ​​the flow guide.

[0017] The benefits achieved by this invention are: it can improve the air guiding effect of the air inlet side of the air guide and improve the cooling effect of the liquid cooling device.

[0018] The effect achieved by this invention is that it can improve the air guiding effect of the air inlet side of the air guide.

[0019] The effect achieved by this invention is that it can improve the effect of the fan in drawing in cold air from the outside when the vehicle is in motion.

[0020] The effect achieved by this invention is that it can improve the cooling effect of the liquid cooling device. Attached Figure Description

[0021] Figure 1 This is a side view of the heat sink in utility model patent application No. TWM610118.

[0022] Figure 2 This is a perspective view of the guide component in utility model patent application No. TWM610118.

[0023] Figure 3 yes Figure 1 A sectional view.

[0024] Figure 4 This is a side view of the vehicle of the present invention without the vehicle body cover.

[0025] Figure 5 This is a cross-sectional view of the power system of the present invention.

[0026] Figure 6 This is a front view of the liquid cooling device and power system of the present invention.

[0027] Figure 7 This is a side view of the liquid cooling device and power system of the present invention.

[0028] Figure 8 This is a cross-sectional view of the liquid cooling device of the present invention.

[0029] Figure 9 This is a perspective view of the flow guide component of the present invention.

[0030] Figure 10This is a side view of the liquid cooling device of the present invention.

[0031] List of reference numerals

[0032] 1: Vehicle

[0033] 2: Chassis Unit

[0034] 21: Head tube section

[0035] 22: Steering mechanism

[0036] 23: Downcomer section

[0037] 24: Foot pedal tube section 241: Foot pedal cross tube

[0038] 25: Side frame section

[0039] 251: Ascending segment 252: Extended segment

[0040] 253: Auxiliary pipe; 254: Extension piece

[0041] 3: Seat cushion

[0042] 4: Power System

[0043] 4a: Power source unit

[0044] 4b: First transmission unit

[0045] 4c: Second transmission unit

[0046] 4d: Third transmission unit

[0047] 41: Cylinder section

[0048] 41a: Cooling water outlet port; 41b: Cooling water inlet port

[0049] 411: Cylinder head cover 412: Cylinder head

[0050] 413: Cylinder body

[0051] 42: Transmission Unit

[0052] 42a: Right housing 42b: Left housing

[0053] 42c: Outer cover

[0054] 43: Transmission box

[0055] 43a: Crankshaft chamber; 43b: Reduction gear set chamber

[0056] 43c: Belt-driven continuously variable transmission system room

[0057] 44: Crankshaft

[0058] 441: Connecting rod; 442: Piston

[0059] 45: Reduction gear set

[0060] 46: Belt-driven continuously variable transmission system

[0061] 461: Driving wheel; 462: Driven wheel

[0062] 463: Drives the belt 464: First output shaft

[0063] 47: Second output shaft; 471: Power output wheel

[0064] 48: First support component

[0065] 49: Second support component

[0066] 5: Clutch

[0067] 6: Drive wheels

[0068] 7: Liquid cooling device

[0069] 71: Fan

[0070] 711: Blade

[0071] 711a: Outer peripheral trajectory; 711b: Inner peripheral trajectory

[0072] 71a: Center point

[0073] 72: Radiator

[0074] 721: Upper sink department

[0075] 7211: Water inlet pipe; 7212: Return pipe

[0076] 722: Sewer sink department

[0077] 7221: Output tube

[0078] 723: Heat dissipation section

[0079] 73: Airflow guide

[0080] 73a: Guiding unit

[0081] 731: Air inlet; 732: Air outlet

[0082] 733: Flange portion; 734: Locking hole

[0083] 735: Through hole; 736: Protruding rib

[0084] 737: Ventilation Department

[0085] 738: Offset section; 738a: Offset air guide surface

[0086] 739: Zhou Bi

[0087] 8: Rear swingarm

[0088] 81: First pivot section

[0089] 82: Second pivot section

[0090] 83: Third output shaft

[0091] 9: Transmission components

[0092] 10: Body Cover Unit

[0093] 101: Side Body Cover

[0094] 102: Concave portion

[0095] 103: Gas supply port

[0096] 104: Wind-guiding wall

[0097] A: Cooling water tank

[0098] A1: Heat dissipation section

[0099] B: Fan

[0100] C: Flow guide

[0101] C1: Air inlet C2: Air outlet

[0102] C3: Guiding section; C4: Stagnation zone

[0103] D: Front fork unit

[0104] E: Generator

[0105] F: storage box

[0106] L: Front guide area; L1: Rear guide area

[0107] M: Exhaust pipe

[0108] FW: Front wheel

[0109] RW: Rear wheel

[0110] R: Guide length; R1: Guiding length

[0111] P: Footrest

[0112] T: Fuel tank

[0113] W: Water pump

[0114] Y: Center of axis. Detailed Implementation

[0115] To better understand the structure of the present invention and the effects it can achieve, the following description is provided in conjunction with the accompanying drawings.

[0116] First, please refer to Figure 4 As shown, the vehicle 1 has a frame unit 2, a seat cushion 3 disposed on the frame unit 2, and a power system 4.

[0117] like Figure 4 As shown below, the left and right sides of the vehicle body are defined with the driver's left side as the left side and the driver's right side as the right side when the driver is seated in the vehicle 1. The front of the frame unit 2 is pivotally equipped with a head tube 21. A steering mechanism 22 is connected above the head tube 21. A downcomer tube 23 is connected to the head tube 21 towards the rear of the vehicle body. Below the downcomer tube 23 are a pair of slightly horizontal foot pedal tubes 24 extending towards the rear of the vehicle body. A foot pedal cross tube 241 connects the end of the downcomer tube 23 to the pair of foot pedal tubes 24. A pair of side frame sections 25 extend from the foot pedal sections 24 towards the rear of the vehicle. The frame portion 25 has an ascending section 251 adjacent to the pedal tube portion 24 and an extension section 252 located at the rear of the vehicle body. A pair of auxiliary tubes 253 are provided between the ascending section 251 and the extension section 252 of the side frame portion 25, and a pair of extension members 254 extend from the ascending section 251 to the rear of the vehicle body. A front fork unit D composed of a front shock absorber is pivotally mounted below the head tube portion 21, and a front wheel FW is pivotally mounted at the lower end of the front fork unit D.

[0118] like Figure 4 As shown, the frame unit 2 has a slightly flat footrest P on its slightly horizontal foot tube section 24, which forms a flat footrest for the driver. The internal space defined between the two slightly horizontal foot tube sections 24 is equipped with a fuel tank T for storing fuel for the combustion of the power system 4. The power system 4 is connected to the frame unit 2 and is located further rearward of the fuel tank T.

[0119] like Figure 4 As shown, the side frame portion 25 has a seat cushion 3 for the driver to sit on above the extension section 252, and a storage box F is provided on the extension section 252 and below the seat cushion 3. The power system 4 is locked to the auxiliary tube 253 and the extension member 254 of the side frame portion 25, and the power system 4 is supported on the frame unit 2 in a non-swinging manner.

[0120] like Figure 4 , 5As shown, the power system 4 is an internal combustion engine; the power system 4 has a power source unit 4a, a first transmission unit 4b, a second transmission unit 4c, and a third transmission unit 4d; the power source unit 4a includes at least a cylinder section 41 and a transmission section 42, the first transmission unit 4b includes at least a belt continuously variable transmission system 46, the second transmission unit 4c includes at least a reduction gear set 45, and the third transmission unit 4d includes at least a belt transmission mechanism consisting of a second output shaft 47, a power output wheel 471, and a drive wheel 6; an exhaust pipe M is provided on one side of the power source unit 4a, the exhaust pipe M extends from the power source unit 4a along the outside of the first transmission unit 4b toward the rear of the vehicle body, a liquid cooling device 7 is provided on the opposite side of the exhaust pipe M, and the third transmission unit 4d is provided on the same side of the liquid cooling device 7.

[0121] like Figure 4 , 5 As shown, the cylinder section 41 extends forward toward the vehicle body in a slightly inclined manner and partially extends beyond the rising section 251 of the side frame section 25, meaning that the portion of the cylinder section 41 extending forward toward the vehicle body extends further forward than the rising section 251 of the side frame section 25. The cylinder section 41 extends from the front of the vehicle body toward the rear of the vehicle body, and consists of a cylinder head cover 411, a cylinder head 412, and a cylinder body 413 in sequence. One end of the cylinder body 413 facing the rear of the vehicle body is connected to the transmission section 42. The cylinder head 412 is connected to the other end of the cylinder body 413 away from the end connected to the transmission section 42. The cylinder head cover 411 is placed on the other end of the cylinder head 412 away from the end connected to the cylinder body 413.

[0122] like Figure 4 , 5 As shown, the transmission part 42 is connected to the cylinder body 413 of the cylinder part 41 and is located away from the cylinder head 412. The transmission part 42 is formed by at least a right housing 42a and a left housing 42b to form a transmission housing 43 (in this embodiment, the right hand is the right side and the left hand is the left side when the driver is sitting, the same below). The transmission housing 43 has a crankshaft chamber 43a for accommodating a crankshaft 44, a reduction gear set chamber 43b for accommodating a reduction gear set 45, and a belt continuously variable transmission system chamber 43c formed by an outer cover 42c covering the outside of the right housing 42a. The belt continuously variable transmission system chamber 43c is provided with a belt continuously variable transmission system 46.

[0123] like Figure 4 , 5 As shown, the crankshaft 44 in the crankshaft chamber 43a of the transmission case 43 is connected to a piston 442 via a connecting rod 441, which extends into the cylinder body 413. The combustion force of the cylinder 41 during operation can drive the piston 442 to rotate the crankshaft 44.

[0124] like Figure 4 , 5 As shown, the belt-driven continuously variable transmission system 46 is a dry belt-driven continuously variable transmission mechanism. The system has a drive pulley 461 driven by the crankshaft 44, a driven pulley 462 driven by the drive pulley 461, and a drive belt 463 connecting the drive pulley 461 and the driven pulley 462. After being driven by the crankshaft 44, the drive pulley 461 drives the driven pulley 462 to rotate continuously at varying speeds via the drive belt 463. The driven pulley 462 has a first output at its center. Shaft 464, the first output shaft 464 extends from the belt-driven continuously variable transmission system chamber 43c into the reduction gear set chamber 43b, thereby driving the reduction gear set 45 located in the reduction gear set chamber 43b to actuate. The reduction gear set 45 is a wet reduction gear set, and the reduction gear set 45 can drive a second output shaft 47 to actuate. The second output shaft 47 and the first output shaft 464 are coaxially arranged. Furthermore, from a top view, the axis of the crankshaft 44 and the first output shaft... The axes of the crankshaft 464 and the second output shaft 47 are arranged to be parallel to each other, and the distances between the axis of the crankshaft 44 and the axis of the first output shaft 464, and the distances between the axis of the crankshaft 44 and the axis of the second output shaft 47 are set to be equidistant. The second output shaft 47 extends out of the transmission housing 43 from the reduction gear set chamber 43b, more specifically, it extends out of the left housing 42b. The second output shaft 47 extends out of the left housing 42b and is connected to a power output pulley 471. The belt continuously variable transmission... The system 46 has a clutch 5 on the outside of the driven wheel 462 (upper in the figure), that is, the clutch 5 is located between the driven wheel 462 and the outer cover 42c. So when the clutch 5 needs to be repaired or replaced, the engineer only needs to remove the outer cover 42c to expose the clutch 5 for repair or replacement, thereby simplifying the repair or replacement of the clutch 5. The clutch 5 can control whether the first output shaft 464 can output power to drive the second output shaft 47.

[0125] like Figure 4 , 5As shown, the transmission housing 43 has a first support member 48 and a second support member 49 on both sides. More specifically, the first support member 48 is locked to the right housing 42a, and the second support member 49 is locked to the left housing 42b. A rear rocker arm 8 is pivotally mounted on the first support member 48 and the second support member 49. The front end of the rear rocker arm 8 has a first pivot portion 81 and a second pivot portion 82 on both sides. The rear end of the rear rocker arm 8 is pivotally mounted on the rear wheel RW via a third output shaft 83. The first pivot portion 81 of the rear rocker arm 8 is pivotally connected to the first support member 48 and the second support member 49. The first output shaft 464 passes through the first pivot portion 81 and the first support member 48 on a support member 48. Therefore, the first pivot portion 81 and the first support member 48 of the rear rocker arm 8 are located between the reduction gear chamber 43b and the belt-driven continuously variable transmission system chamber 43c of the transmission housing 43. The second pivot portion 82 is pivotally connected to the second support member 49, meaning that the second output shaft 47 passes through the second pivot portion 82 and the second support member 49. Therefore, the second pivot portion 82 of the rear rocker arm 8 is pivotally connected to the second support member 49. Furthermore, the second pivot 82 is located between the power output wheel 471 of the transmission unit 42 and the transmission box 43, thereby allowing the rear rocker arm 8 to swing up and down around the axis center Y of the second output shaft 47, and causing the first output shaft 464 to be coaxial with the axis center Y, and to swing up and down synchronously with the rear wheel RW relative to the power source unit 4a and the first transmission unit 4b; the rear wheel RW is provided with a third output shaft 83, which is connected to the power output wheel on the second output shaft 47 by a transmission component 9 (belt or chain). The power output wheel 471 on the second output shaft 47 drives the transmission member 9 to drive the third output shaft 83, thereby driving the rear wheel RW to rotate synchronously. It should also be noted that the first output shaft 464 passes through the first pivot 81 and the first support member 48. The first pivot 81 and the first support member 48 of the rear rocker arm 8 are located between the reduction gear set chamber 43b and the belt continuously variable transmission system chamber 43c of the transmission box 43, thereby making the overall configuration of the power system 4 and the rear rocker arm 8 more compact.

[0126] like Figure 4 , 5As shown, the vehicle 1 has a body cover unit 10 on the outer periphery of the frame unit 2. The body cover unit 10 has at least a footrest P located in front of the seat cushion 3 and extending along the width direction of the vehicle 1, and a side body cover 101 extending from the side of the footrest P toward the rear of the vehicle body and capable of covering the outside of the radiator 72 of the liquid cooling device 7. The side body cover 101 has a recess 102 formed between the footrest P and the radiator 72. A large, forward-facing air inlet 103 is provided at the rear of part 102 corresponding to the radiator 72. The air inlet 103 has multiple air intake walls 104 with the outer side angled forward and the inner side angled towards the radiator 72. In this way, the air inlet 103 can provide fresh cold air from the outside to the radiator 72. In particular, when the vehicle 1 is in motion, the air intake walls 104 can actively provide fresh cold air from the outside to the radiator 72 which is covered by the body cover unit 10.

[0127] like Figure 5 , 7 As shown, the liquid cooling device 7 is located on one side of the vehicle body in the width direction; that is, the liquid cooling device 7 is located on the other side of the belt-driven continuously variable transmission system 46 of the power system 4. The cooling device 7 has a fan 71 connected to the crankshaft 44, a radiator 72 located further outward of the fan 71 in the width direction of the vehicle, and a guide 73 located between the fan 71 and the radiator 72. That is, the radiator 72 is located on the side of the power system 4 opposite to the exhaust pipe M; the fan 71 is connected to the outer side of the crankshaft 44, and further... The crankshaft 44 is first connected to the generator E on the other side of the belt continuously variable transmission system 46, and then the fan 71 is connected to the outside of the generator E. In this way, when the crankshaft 44 rotates, it can synchronously drive the generator E and the fan 71 to rotate. The fan 71 has multiple blades 711 extending outward along the inner side of the blade 711. The blades 711 protrude outward in the width direction. When the fan 71 is driven to rotate by the crankshaft 44, the blades 711 will form an inner peripheral track 711b and an outer peripheral track 711a at their inner and outer ends due to rotation.

[0128] like Figure 5 , 6As shown in Figure 7, the radiator 72 has an upper water tank 721, a lower water tank 722, and a heat dissipation section 723 connecting the upper water tank 721 and the lower water tank 722. The upper water tank 721 is provided with a water inlet pipe 7211 and a return pipe 7212. The water inlet pipe 7211 allows external cold water to be added into the radiator 72. The return pipe 7212 is connected to the cooling water outlet port 41a of the cylinder section 41 of the power system 4, thereby allowing the hot water cooled by the cylinder section 41 of the power system 4 to flow back into the radiator 72 for cooling. The lower water tank 722 is provided with an outlet pipe 7221, which is connected to the cooling water inlet port 41a of the cylinder section 41 of the power system 4. 1b. The water pump W located in the cylinder section 41 can be used to input the cooled water from the radiator 72 into the inlet of the cylinder section 41 of the power system 4 for cooling. The heat dissipation section 723 is provided with multiple heat dissipation fins. The heat dissipation section 723 is roughly corresponding to the blades 711 of the fan 71. When the power system 4 drives the fan 71 to rotate, the blades 711 can introduce outside cold air to cool the heat dissipation section 723. The hot water from the cylinder section 41 of the power system 4 is returned to the upper water tank section 721 through the return pipe 7212. When it flows from the heat dissipation section 723 to the lower water tank section 722, the negative pressure generated by the fan 71 introduces outside cold air to cool the system. The radiator 72 is mounted on the outer side of the fan 71 along the width direction of the vehicle 1, thereby allowing the radiator 72 to draw in outside cold air through the fan 71, so that the heat dissipation part 723 can be cooled by the outside cold air. The configuration of the radiator 72 and the fan 71 of the present invention is illustrated in the following manner, but it is not intended to limit the configuration of the radiator 72 and the fan 71 of the present invention. The radiator 72 is mounted on the outer side of the fan 71 along the width direction of the vehicle 1, which is further away from the cylinder part 41 of the power system 4 than the fan 71, and slightly above the fan 71 in the longitudinal direction and vertical direction of the vehicle body.

[0129] like Figure 5 , 7 As shown in Figures 8 and 9, among which Figure 8 The arrow in the diagram indicates the direction of the vehicle's front. The fan 71 and the radiator 72 of the liquid cooling device 7 are configured such that the rear end of the outer peripheral trajectory 711a of the fan 71 blades (rear direction in the longitudinal direction of the vehicle body) is closer to the rear of the vehicle body than the rear end of the central portion of the heat dissipation section 723 of the radiator 72.

[0130] like Figure 5 , 8As shown in Figures 9 and 10, the air guide 73 has an air inlet 731 and an air outlet 732. Between the air inlet 731 and the air outlet 732, there is a guide portion 73a that is inclined and gradually narrows from the air inlet 731 to the air outlet 732. The air guide 73 has a flange portion 733 around the outer periphery of the air inlet 731. The four corners of the flange portion 733 have locking holes 734 for fixing the air guide 73. The flange portion 733 also has a through hole 735 on one side for a hanging shaft of the power system 4 to pass through. The flange portion 733 has mounting ribs 736 on at least two sides. The air outlet 732 is located towards the fan 71. The system includes an exhaust section 737, and more specifically, the exhaust port 732 has an annular peripheral wall 739 extending towards the fan 71, on which the exhaust section 737 is located. Since the air inlet 731 and the air outlet 732 are roughly equal to or slightly smaller than the outer peripheral trajectory 711a of the blade 711, the guide member 73 must have a guiding effect. Therefore, the air inlet 731 and the air outlet 732 must be positioned so that their rear end in the longitudinal direction of the vehicle body (rear direction) is closer to the rear of the vehicle body than the rear end of the central portion of the heat dissipation section 723 of the radiator 72. The air guide 73 has a large-area deflection portion 738 on the side of the air inlet 731. This deflection portion 738 is formed by the air outlet 731 located at the front of the vehicle 1, tilted towards the air outlet 732 (i.e., towards the fan 71), forming a deflection guide surface 738a. More specifically, the deflection portion 738 is inclined from the base of the protruding rib 736 towards the air inlet 731 and connects with the air inlet 731. This allows the air guide 73 to form a large-area guide surface on the air inlet 731 side, thereby improving the overall air guiding effect of the air guide 73. The deflection guide surface 738 formed by the deflection portion 738... The air guiding length R of 8a is greater than the guiding length R1 of the guide part 73a, meaning that the biased air guiding surface 738a can be regarded as extending from the air inlet 731 to one side, and thus the area of ​​the air inlet 731 can be regarded as being enlarged. For example, taking the center point 71a of the fan 71 as the dividing point, the front guiding area L formed by the front outer edge of the biased air guiding surface 738a to the center point 71a of the fan 71 is greater than the rear guiding area L1 formed by the outer edge of the guide part 73a to the center point 71a of the fan 71. Accordingly, the total area of ​​the guide member 73 located on the side of the air inlet 731 that can guide cooling air is effectively expanded.More specifically, viewed from the side of the vehicle 1, the air inlet 731 overlaps with the heat dissipation section 723 of the radiator 72 by extending the biased air guide surface 738a to one side. This means that the heat dissipation section 723 of the radiator 72 is covered by the air inlet 731, which includes the front guide area L formed by the biased air guide surface 738a. This ensures that the heat dissipation section 723 of the radiator 72 and its corresponding guide member 73 have no obstruction area on the side of the air inlet 731. Therefore, when the fan 71 operates, the generated airflow... The negative pressure draws in fresh air from the outside through the heat dissipation section 723 of the radiator 72. Since the majority of the heat dissipation section 723 is covered by the air inlet 731 and the deflecting air guide surface 738a, the fresh air from the outside can be thoroughly cooled by blowing air onto the heat dissipation section 723 before being discharged through the exhaust section 737 of the outlet 732. This effectively improves the heat dissipation effect of the liquid cooling device 7, thereby enhancing the performance and service life of the power system 4.

[0131] The present invention mainly utilizes a liquid cooling device 7 comprising a fan 71 and a radiator 72, and a guide member 73 disposed between the fan 71 and the radiator 72. The fan 71 has multiple blades 711, and the fan 71 can be driven to rotate by the power system 4. After the fan 71 is driven to rotate, the blades 711 generate an inner peripheral trajectory 711b and an outer peripheral trajectory 711a at their inner and outer ends. The radiator 72 has at least a heat dissipation part 723, which is approximately corresponding to the blades 711 of the fan 71. The fan 71 and the radiator 72 of the liquid cooling device 7 are arranged such that the fan 711 is positioned along the longitudinal direction of the vehicle body 1. Upward, the rear end of the outer peripheral track 711a of the blade 711 is offset from the rear end of the central portion of the heat dissipation section 723 of the radiator 72; the guide member 73 has at least an air inlet 731 and an air outlet 732, the air inlet 731 and the air outlet 732 are equivalent to or slightly smaller than the outer peripheral track 711a of the blade 711, and the guide member 73 has a deflection portion 738 on the side of the air inlet 731; thereby effectively increasing the air guiding area on the side of the air inlet 731 of the guide member 73, and improving the cooling effect of the liquid cooling device 7 when the vehicle 1 is idling, and further improving the cooling effect of the vehicle 1 when driving.

[0132] In summary, the present invention, through the above-described structure, can improve upon known shortcomings and achieve the claimed objectives, and has indeed improved upon existing technologies, thus possessing novelty, practicality, and inventiveness.

Claims

1. A liquid cooling device for a saddle-type vehicle, characterized in that, The vehicle includes at least one power system supported on a frame unit and used to drive the vehicle. The power system has a liquid cooling device along its width. The liquid cooling device includes a fan and a radiator, and a guide vane between the fan and the radiator. The fan has multiple blades and can be rotated by the power system. When the fan rotates, the blades generate inner and outer peripheral trajectories at their inner and outer ends. The radiator has at least a heat dissipation section that roughly corresponds to the fan blades. The fan and radiator of the device are configured such that the rear end of the outer peripheral trajectory of the fan blades in the longitudinal direction of the vehicle body is offset further rearward than the rear end of the central portion of the radiator's heat dissipation section; the air guide has at least an air inlet and an air outlet, the air outlet being approximately equal to or slightly smaller than the outer peripheral trajectory of the blades, and the air guide has a deflection portion formed on the front side of the vehicle from the air inlet toward the fan side, the deflection portion having a deflection guiding surface; an inclined guiding portion is provided between the air inlet and the air outlet; the guiding length of the deflection guiding surface is greater than the guiding length of the guiding portion.

2. The liquid cooling device for a saddle-type vehicle according to claim 1, characterized in that, The deflecting air guide surface is formed at an angle from the air inlet located on the front side of the vehicle toward the air outlet.

3. The liquid cooling device for a saddle-type vehicle according to claim 1, characterized in that, Viewed from the side of the vehicle, with the center point of the fan as the dividing point, the front guide area formed by the outer edge of the front of the deflector to the center point of the fan is greater than the rear guide area formed by the outer edge of the rear guide to the center point of the fan.

4. The liquid cooling device for a saddle-type vehicle according to claim 1, characterized in that, Viewed from the side of the vehicle, the air inlet overlaps with the heat dissipation section of the radiator via the offset air guide surface extending to one side.

5. The liquid cooling device for a saddle-type vehicle according to claim 1, characterized in that, The heat dissipation section of the radiator is largely covered by the air inlet, which includes the front guide area formed by the offset air guide surface.

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