JP2021162258A - Radiator - Google Patents

Abstract

To provide a radiator that can improve cooling performance.SOLUTION: A radiator 47 includes: a front tank 47A and a rear tank 47B for storing coolant; and multiple coolant passages 48d connected to the front tank 47A and the rear tank 47B respectively to facilitate heat radiation from the coolant. The front tank 47A and the rear tank 47B are disposed in the center in a vehicle width direction. The coolant passages 48d are formed inside heat radiating plates 47e provided on an outside in the vehicle width direction of the front tank 47A and the rear tank 47B.SELECTED DRAWING: Figure 7

Description

The present invention relates to a radiator.

Conventionally, as a radiator, it is composed of a pair of tanks for storing cooling water and a core arranged between the pair of tanks, and the core is a plurality of cooling water passages passed between the pair of tanks and a plurality of cooling waters. It is known that the fins are arranged between the passages (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 5-16857

In Patent Document 1, since the width of the core arranged between the pair of left and right tanks is restricted by the positions of the left and right tanks, there is no freedom in the length of the cooling water passage and the number of fins.
An object of the present invention is to provide a radiator capable of improving cooling performance while increasing the degree of freedom in shape.

A plurality of radiators are connected to the first tank (47A) and the second tank (47B) for storing the cooling water and the first tank (47A) and the second tank (47B) to promote heat dissipation of the cooling water. In the radiator including the cooling water passage (48d), the first tank (47A) and the second tank (47B) are arranged at the center in the vehicle width direction, and the cooling water passage (48d) is the first. It is characterized in that it is formed in a heat radiating plate (47e) provided on the outer side of the tank (47A) and the second tank (47B) in the vehicle width direction.

In the above configuration, the cooling water passage (48d) is formed in the heat radiating plate (47e) by a partition wall (48c) formed so as to extend in the vehicle width direction, thereby forming the first tank (47A) and the second tank (47A). It may be formed in a U shape between 47B).
Further, in the above configuration, the first tank (47A) and the second tank (47B) may be arranged side by side in the front-rear direction.

Further, in the above configuration, a plurality of the heat sinks (47e) may be stacked via the air passages (71 to 76).
Further, in the above configuration, the thickness of the heat radiating plate (47e) on the upper side and the heat radiating plate (47e) on the lower side is increased in the front-rear direction of the vehicle, which is arranged behind the front wheels (12) provided in the vehicle (10). It may be different.

Further, in the above configuration, the first tank (47A), the second tank (47B), and the heat radiating plate (47e) may be integrally formed.
Further, in the above configuration, the first tank (47A), the second tank (47B), and the left and right heat radiating plates (47e) may be arranged in a V shape with the front side open in a plan view.

In the radiator, the first tank and the second tank are arranged in the center in the vehicle width direction, and the cooling water passage is formed in the heat sink provided on the outside in the vehicle width direction of the first tank and the second tank. , The heat sink can be extended outward in the vehicle width direction, the degree of freedom in shape is high, and the heat dissipation can be improved by expanding the area of the heat sink, so that the cooling performance of the radiator can also be improved.

In the above configuration, the cooling water passage is formed in a U shape between the first tank and the second tank by a partition wall formed in the heat radiating plate so as to extend in the vehicle width direction, so that the cooling water passage is cooled in the heat radiating plate. The water passage can be formed long, and heat dissipation from the cooling water can be further promoted.
Further, in the above configuration, since the first tank and the second tank are arranged side by side in the front-rear direction, the length of the heat radiating plate in the vehicle width direction can be made longer, and the cooling performance of the radiator can be further improved.

Further, in the above configuration, since a plurality of heat sinks are stacked via the air passage, the capacity of the radiator can be increased and the cooling performance of the radiator can be improved.
Further, in the above configuration, the radiator is arranged behind the front wheels provided in the vehicle, and the thicknesses of the upper heat sink and the lower heat sink are different in the front-rear direction of the vehicle. It can be formed into a flexible shape, the appearance can be improved, and it can be arranged compactly.

Further, in the above configuration, since the first tank, the second tank, and the heat radiating plate are integrally formed, the manufacturing process can be simplified, the number of parts can be reduced, and the cost can be reduced. ..
Further, in the above configuration, the first tank, the second tank, and the left and right heat radiating plates are arranged in a V shape with the front side open in a plan view, so that the traveling wind from the front can be easily collected inside the radiator. It is possible to promote heat dissipation from the cooling water and enhance the cooling effect.

It is a left side view which shows the motorcycle of the embodiment of this invention. It is a front view which shows the motorcycle. It is a perspective view which shows the radiator. It is a front view which shows the radiator. It is a left side view which shows a radiator. FIG. 2 is a sectional view taken along line VI-VI of FIG. FIG. 5 is a sectional view taken along line VII-VII of FIG. FIG. 4 is a cross-sectional view taken along the line VIII-VIII of FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the explanation, the directions such as front / rear / left / right and up / down are the same as the directions with respect to the vehicle body unless otherwise specified. Further, the reference numeral FR shown in each figure indicates the front of the vehicle body, the reference numeral UP indicates the upper portion of the vehicle body, the reference numeral LH indicates the left side of the vehicle body, and the parts mounted on the vehicle indicate the direction when the vehicle is mounted.
FIG. 1 is a left side view showing the motorcycle 10 according to the embodiment of the present invention, and FIG. 2 is a front view showing the motorcycle 10.
As shown in FIG. 1, the motorcycle 10 is a saddle-riding vehicle including a body frame 11, front wheels 12, rear wheels 13, and seat 14.

The vehicle body frame 11 includes a head pipe 21, a pair of left and right main frames 22, a pair of left and right pivot frames 23, and a pair of left and right seat frames 24.
The head pipe 21 constitutes the front end portion of the vehicle body frame 11 and supports the front fork 16 that supports the front wheels 12 so as to be steerable. The main frame 22 extends obliquely downward from the head pipe 21 to support the engine 35. A fuel tank 31 is supported on the upper part of the main frame 22.

The pivot frame 23 supports a pivot shaft 17 extending downward from the rear end portion of the main frame 22 and extending in the vehicle width direction. Further, the pivot frame 23 supports the engine 35 together with the main frame 22. The seat frame 24 extends obliquely rearward and upward from the rear end portion of the main frame 22 and the upper end portion of the pivot frame 23 to support the seat 14.

The front fork 16 includes a top bridge 36 and a bottom bridge 37 that connect the left and right sides of the front fork 16. A pair of left and right bar handles 41 are attached to the upper surface of the top bridge 36, and the front wheels 12 are supported on the lower end of the front fork 16 via the axle 12a.
A swing arm 18 is attached to the pivot shaft 17 so as to be able to swing up and down, and a rear wheel 13 is supported at the rear end of the swing arm 18 via an axle 13a.

The engine 35 includes a crankcase 45 and a cylinder portion 46 extending diagonally forward and upward from the front portion of the crankcase 45. A radiator 47 for water-cooling the engine 35 is arranged behind the front wheels 12 and in front of the cylinder portion 46. An intake device 49 including an air cleaner and the like is connected to the rear portion of the cylinder portion 46.
The body frame 11 is covered with a body cover 51.

The body cover 51 includes a cowl 52. The cowl 52 includes an upper cowl 52a, a pair of left and right middle cowls 52b, and a pair of left and right lower cowls 52c.
The upper cowl 52a covers the upper parts of the head pipe 21 and the front fork 16. The left and right middle cowls 52b extend rearward from the upper cowl 52a and cover the cylinder portion 46 of the engine 35 from the side. The left and right lower cowls 52c cover the lower part of the engine 35 from the side.

As shown in FIGS. 1 and 2, the headlight 61 is arranged inside the upper cowl 52a.
A windscreen 53 and a pair of left and right rearview mirrors 42 are attached to the upper part of the upper cowl 52a. A meter unit 62 is arranged above the upper cowl 52a and behind the windscreen 53.

The front wheel 12 is covered with a front fender 64 from above. The rear wheel 13 is covered with a rear fender 66 from above. A tail light 67 is arranged above the rear fender 66.
The radiator 47 has a rectangular contour for front view, is arranged behind the front fork 16 and the front fender 64, and is partially visible from the front opening 52e formed by the upper cowl 52a and the left and right middle cowls 52b. Will be done.

FIG. 3 is a perspective view showing the radiator 47, FIG. 4 is a front view showing the radiator 47, and FIG. 5 is a left side view showing the radiator 47.
As shown in FIGS. 3 to 5, in the radiator 47, a front tank 47A as a first tank and a rear tank 47B as a second tank (see FIG. 7) are arranged in the center in the vehicle width direction, and the front tank 47A and the rear tank 47A and the rear tank 47B are arranged. A pair of left and right radiator plate assemblies 47C are arranged on both sides of the tank 47B in the vehicle width direction.

The front tank 47A and the rear tank 47B are tanks for storing cooling water, and the rear tank 47B is arranged adjacent to the rear of the front tank 47A.
The left and right heat sink aggregates 47C are portions that dissipate heat from the cooling water flowing inside, and a plurality of heat sinks 47e arranged at intervals above and below, and the outer edges of the heat sinks 47e adjacent to each other vertically. It is composed of a plurality of side plates 47f for connecting the above.
The left and right heat radiating plate aggregates 47C extend from the front tank 47A and the rear tank 47B so as to be inclined forward and obliquely in a plan view.

The plurality of heat radiating plates 47e are designated as heat radiating plates 47e1, 47e2, 47e3, 47e4, 47e5, 47e6, 47e7 in order from the top for identification. Further, the plurality of side plates 47f are designated as side plates 47f1, 47f2, 47f3, 47f4, 47f5, 47f6 in order from the top for identification.
The plurality of heat radiating plates 47e are formed with cooling water passages (not shown) through which the cooling water flows, and promotes heat dissipation from the cooling water flowing through the cooling water passages.

Air passages 71 to 76 that penetrate the radiator 47 in the front-rear direction are provided between the heat sinks 47e that are adjacent to each other on the upper and lower sides. The plurality of air passages 71 to 76 are passages having a rectangular cross section surrounded by the adjacent heat radiating plates 47e, the front tank 47A and the rear tank 47B, and the side plates 47f, respectively.
The plurality of air passages 71 to 76 are provided with a front opening 47r on the front 47Q side of the radiator 47 and a rear opening 47t on the back 47S side of the radiator 47, and flow into the air passages 71 to 76 from each front opening 47r. The resulting air flows out from each rear opening 47t.

A cooling water suction port 47h, a reserve tank 81, a pair of left and right mounting brackets 82, and a water injection port 83 are provided on the upper surface 47g of the radiator 47.
The cooling water suction port 47h is a portion for sucking cooling water into the front tank 47A. The reserve tank 81 stores cooling water to be replenished in the radiator 47 (specifically, the front tank 47A). A water injection port 81a for pouring cooling water and a cap 81b for closing the water injection port 81a are provided on the upper part of the reserve tank 81.

The left and right mounting brackets 82 are arranged at the left and right ends of the upper surface 47 g, and are members for mounting the radiator 47 to the vehicle body frame 11 (see FIG. 1). The water injection port 83 is a portion into which the cooling water is poured into the front tank 47A, and is closed by the radiator cap 84.
On the lower surface 47j of the radiator 47, a mounting bracket 85 for mounting the radiator 47 to the vehicle body frame 11 (see FIG. 1) together with the left and right mounting brackets 82 is provided at the front portion in the center in the vehicle width direction, and the rear portion in the center in the vehicle width direction. A cooling water discharge port 47k (see FIG. 6) for discharging cooling water from the rear tank 47B is arranged in the rear tank 47B.

As shown in FIG. 5, when viewed from the side of the vehicle, the upper side of the radiator 47 (heat sink 47e1 side) and the lower side of the radiator 47 (heat sink 47e7 side) are closer to the upper side than the lower side in the front-rear direction. The thickness T is thicker. Specifically, the thickness T in the front-rear direction gradually decreases in the order of the heat radiating plate 47e1 located at the uppermost position to the heat radiating plate 47e2, 47e3, 47e4, 47e5, 47e6, 47e7.

In other words, the front surface 47m of the front tank 47A (see FIG. 3), the front surface 47n of the plurality of heat radiation plates 47e, and the front end surface 47p of the plurality of side plates 47f are gradually located rearward as they go downward. Further, the front surface 47Q of the radiator 47 including the front surface 47m of the front tank 47A, the front surface 47n of the plurality of heat sinks 47e, and the front end surfaces 47p of the plurality of side plates 47f is gradually bent so as to be positioned rearward as it goes downward. There is.

By forming the front surface 47Q of the radiator 47 as described above, the front surface 47Q is arranged along the leading edge of the cowl 52 (see FIG. 1) (for details, the middle cowl 52b (see FIG. 1)). be able to. As a result, the radiator 47 can be compactly arranged at the front portion of the vehicle body.

FIG. 6 is a sectional view taken along line VI-VI of FIG.
The radiator 47 is arranged between the left and right middle cowls 52b and is arranged in front of the engine 35.
In a plan view, the plurality of heat radiating plates 47e on the left and right extend diagonally forward outward in the vehicle width direction from the front tank 47A and the rear tank 47B. That is, the radiator 47 is formed in a V shape as a whole in a plan view, the open portion of the V shape is located in the front, and the tapered portion is located in the rear.

By forming the radiator 47 into a V shape in a plan view in this way, the traveling wind flowing into the cowl 52 from the front opening 52e formed at the leading edges of the left and right middle cowls 52b is collected in the radiator 47. It can be done easily. As a result, more air can be taken into the radiator 47, and the heat dissipation of the radiator 47 can be improved.

Further, as shown by arrows, each front opening so that the traveling wind flowing from the front opening 52e into the cowl 52 and spreading to the left and right is at an angle close to perpendicular to each front opening 47r of the radiator 47. It can be taken in from the part 47r. As a result, the running wind can be effectively taken into the radiator 47 from the front opening 52e.
Further, since the front tank 47A is more easily exposed to the running wind than the rear tank 47B, the high-temperature cooling water directly taken into the front tank 47A from the engine 35 via the cooling water suction port 47h is effective by the running wind. Can be cooled.

7 is a sectional view taken along line VII-VII of FIG. 5, and FIG. 8 is a sectional view taken along line VIII-VIII of FIG.
As shown in FIGS. 7 and 8, each of the front tank 47A and the rear tank 47B is a vertically long container, has a rectangular cross section, and extends from the heat radiating plate 47e1 located at the uppermost position to the heat radiating plate 47e7 located at the lowermost position. The area of the cross section gradually decreases as it extends and moves downward.

The front tank 47A includes a front wall 47u, front and rear intermediate walls 47v, left and right side walls 47w, an upper wall 47x, and a bottom wall 47y. The rear tank 47B includes a front-rear intermediate wall 47v, a rear wall 47z, left and right side walls 47w, an upper wall 47x, and a bottom wall 47y.
The front tank 47A and the rear tank 47B share the front and rear intermediate walls 47v, the left and right side walls 47w, the upper wall 47x and the bottom wall 47y, and the front part of the upper wall 47x has a cooling water suction port 47h and the rear part of the bottom wall 47y. Is provided with a cooling water discharge port 47k.

As shown in FIGS. 7 and 8, the heat radiating plate 47e1 is a cooling water passage 48d (cooling water passage 48d) formed from a front wall 48h, a rear wall 48j, a side wall 48a, an upper wall 47x, an upper and lower intermediate walls 48b, and a partition wall 48c. 48d is provided with a cooling water passage 48d1 for identification).
The heat radiating plates 47e2 to 47e6 identify a plurality of cooling water passages 48d (a plurality of cooling water passages 48d) formed from a front wall 48h, a rear wall 448j, a side wall 48a, a pair of upper and lower intermediate walls 48b, and a partition wall 48c, respectively. The cooling water passages 48d2 to 48d6 are provided for this purpose.

The heat radiating plate 47e7 has a cooling water passage 48d formed from a front wall 48h, a rear wall 48j, a side wall 48a, an upper and lower intermediate walls 48b, and a bottom wall 47y (the cooling water passage 48d is designated as a cooling water passage 48d7 for identification. ) Is provided.
The cooling water passages 48d1 to 48d7 described above include a front passage 48e located in front of the partition wall 48c, a U-turn passage 48f located on the tip side of the partition wall 48c, and a rear passage 48g located behind the partition wall 48c. It is formed in a plurality of heat radiating plates 47e to promote heat dissipation of cooling water. As described above, the cooling water passages 48d1 to 48d7 are formed in a U shape between the front tank 47A and the rear tank 47B.

The heat radiating plates 47e1, 47e2, 47e3, 47e4, 47e5, 47e6, 47e7 are integrally formed with the front tank 47A and the rear tank 47B. Further, the reserve tank 81, the water injection port 81a, the mounting bracket 82, the water injection port 83, and the mounting bracket 85 shown in FIG. 4 are integrally formed with the heat radiating plates 47e1 and 47e7.

The flow of the cooling water in the radiator 47 described above will be described below.
In FIGS. 7 and 8, as shown by arrow A, the cooling water flowing into the front tank 47A from the cooling water suction port 47h descends in the front tank 47A as shown by arrow B, and is indicated by arrow C. As shown, the water flows from the front tank 47A toward the outside in the vehicle width direction through the front passages 48e in the left and right heat radiating plates 47e1 to 47e7.

Then, as shown by an arrow D, a U-turn is made in each U-turn passage 48f of the left and right heat radiating plates 47e1 to 47e7, and as shown by an arrow E, each rear passage 48g flows to the rear tank 47B. Then, the cooling water in the rear tank 47B descends in the rear tank 47B as shown by an arrow F, and as shown by an arrow G, the cooling water is discharged from the cooling water discharge port 47k to the outside of the radiator 47, that is, the engine 35 (FIG. 1) is sent.

The radiator 47 shown above can be manufactured by a conventional manufacturing method or a layered manufacturing method using a 3D printer or the like.
An example of the procedure for manufacturing the radiator 47 by the additive manufacturing method will be described below.
(1) First, a metal powder (aluminum alloy powder, etc.), which is a material for the radiator 47, is spread over a pedestal, which is a base for manufacturing, to a predetermined layer thickness.
(2) The spread metal powder layer is irradiated with, for example, laser light as a heat source to melt and solidify the metal powder. At this time, the irradiation of the laser light is performed while scanning with the two-dimensional data sliced for each predetermined layer thickness based on the three-dimensional CAD data or the like.

(3) Next, the pedestal is lowered by the thickness of one layer, and the metal powder to be the next layer is spread on the first layer to the above-mentioned predetermined layer thickness.
(4) The second layer is irradiated with laser light again to melt and solidify the metal powder.
(5) The above steps (3) and (4) are repeated.
(6) The product that has been melted and solidified by laser light in all layers of the three-dimensional CAD data is removed from the pedestal.

(7) Remove the metal powder in the portion not irradiated with the laser beam. For example, the metal powder in the hollow portion (inside the front tank and the rear tank, inside the cooling water passage) is discharged from the opening or discharged from the discharge hole formed when the laser beam is irradiated. .. This discharge hole is closed after removing the metal powder. This completes the production of the material for the radiator 47.
(8) The material of the radiator 47 is subjected to surface treatment or the like to complete the radiator 47.
In the case of the laminated molding method, the cooling water suction port 47h, the cooling water discharge port 47k, the mounting brackets 82, 85, the water injection port for injecting cooling water (not shown), etc. are also the front tank, the rear tank, and the cooling water passage. It is molded integrally.

By manufacturing the radiator 47 by the additive manufacturing method in this way, the entire radiator 47 can be integrally formed, and since there is no joint of each part as in the conventional radiator, the number of parts can be reduced and the manufacturing can be performed. Man-hours and costs can be reduced. Further, even a complicated shape can be easily formed, and the degree of freedom in shape can be increased. As a result, high-mix low-volume production can be performed at low cost. Furthermore, since trial production can be easily performed, it is possible to simulate the cooling capacity of an actual radiator, and it is easy to design an optimum radiator for the mounted vehicle.

As shown in FIGS. 1 and 7 above, a plurality of cooling water passages connected to the front tank 47A and the rear tank 47B for storing the cooling water and the front tank 47A and the rear tank 47B to promote heat dissipation of the cooling water. In the radiator 47 including the 48d, the front tank 47A and the rear tank 47B are arranged in the center in the vehicle width direction, and the cooling water passage 48d is provided on the outside of the front tank 47A and the rear tank 47B in the vehicle width direction. It is formed inside.
According to this configuration, the heat radiating plate 47e can be extended outward in the vehicle width direction, and the heat radiating property can be improved by expanding the area of the heat radiating plate 47e, so that the cooling performance of the radiator 47 can be improved.

Further, as shown in FIG. 7, the cooling water passage 48d is formed in a U shape between the front tank 47A and the rear tank 47B by a partition wall 48c formed in the heat radiating plate 47e so as to extend in the vehicle width direction. ing.
According to this configuration, the cooling water passage 48d can be formed long in the heat radiating plate 47e, and heat dissipation from the cooling water can be further promoted.

Further, the front tank 47A and the rear tank 47B are arranged side by side in the front-rear direction.
According to this configuration, the length of the heat radiating plate in the vehicle width direction can be made longer, and the cooling performance of the radiator can be further improved.

Further, as shown in FIG. 3, a plurality of heat sinks 47e are stacked via air passages 71 to 76.
According to this configuration, the capacity of the radiator 47 can be increased, and the cooling capacity of the radiator 47 can be improved.

Further, as shown in FIGS. 1 and 5, the thickness of the upper heat radiating plate 47e and the lower heat radiating plate (47e) is increased in the front-rear direction of the vehicle, which is arranged behind the front wheels 12 provided in the motorcycle 10. different.
According to this configuration, the radiator can be formed in a shape that conforms to the shape of the vehicle body cover provided in the vehicle, the appearance can be improved, and the radiator can be arranged compactly.

Further, as shown in FIG. 7, the front tank 47A, the rear tank 47B, and the heat radiating plate 47e are integrally formed.
According to this configuration, the manufacturing process of the radiator can be simplified, the number of parts can be reduced, and the cost can be reduced.

Further, the front tank 47A, the rear tank 47B, and the left and right heat radiating plates 47e are arranged in a V shape with the front side open in a plan view.
According to this configuration, it is possible to easily collect the traveling wind from the front inside the radiator, and the heat dissipation from the cooling water is promoted to enhance the cooling effect.

The above-described embodiment shows only one aspect of the present invention, and can be arbitrarily modified and applied without departing from the gist of the present invention.
The radiator of the present invention is not limited to the case where it is applied to the motorcycle 10, but can be applied to a saddle-type vehicle including other than the motorcycle 10, other vehicles, industrial machines, air conditioners, and various heat exchangers.

10 Motorcycles (vehicles)
47 radiator 47A front tank (first tank)
47B rear tank (second tank)
47e Heat sink 48c Partition wall 48d Cooling water passage 71-76 Air passage

Claims (7)

A plurality of cooling waters connected to the first tank (47A) and the second tank (47B) for storing the cooling water and the first tank (47A) and the second tank (47B) to promote heat dissipation of the cooling water. In a radiator with a passage (48d)
The first tank (47A) and the second tank (47B) are arranged at the center in the vehicle width direction, and the cooling water passage (48d) is the first tank (47A) and the second tank (47B). A radiator characterized in that it is formed in a heat radiating plate (47e) provided on the outside in the vehicle width direction. The cooling water passage (48d) is formed between the first tank (47A) and the second tank (47B) by a partition wall (48c) formed in the heat radiating plate (47e) so as to extend in the vehicle width direction. The radiator according to claim 1, wherein the radiator is formed in a U shape. The radiator according to claim 1 or 2, wherein the first tank (47A) and the second tank (47B) are arranged side by side in the front-rear direction. The radiator according to any one of claims 1 to 3, wherein a plurality of radiator plates (47e) are stacked via air passages (71 to 76). It is arranged behind the front wheels (12) provided in the vehicle (10), and is characterized in that the thickness of the upper heat radiating plate (47e) and the lower heat radiating plate (47e) are different in the vehicle front-rear direction. The radiator according to any one of claims 1 to 4. The radiator according to any one of claims 1 to 5, wherein the first tank (47A), the second tank (47B), and the heat radiating plate (47e) are integrally formed. .. Claims 1 to 1, wherein the first tank (47A), the second tank (47B), and the left and right heat radiating plates (47e) are arranged in a V shape with the front side open in a plan view. The radiator according to any one of 6.

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