JPS59197796A - Radiator for vehicle - Google Patents

Abstract

PURPOSE:To facilitate to connect a radiator to the pipes of outer units, as well as to enhance the radiating effect of a radiator, by combining a radiator with an oil cooler in one body. CONSTITUTION:The discharge ports 27L, 27R, 27L' and 27R' of cooling water from an engine 18 are connected all together to one pipeline 27 on the outside of an engine 18, and the pipeline 27 is connected to a tank on the inlet side of cooling water for a radiator 40. A radiator 30 is positioned between a front fork and the left and the right side frames 20L and 20R, and fittings 33L and 33R, respectively set on the upper end of each side frame, and fixed to the upper surface of the side frames 20L and 20R. A large radiating area is provided to the radiator 30 which is formed in the shape of a gate so that it does not interfere with a cylinder head 18b which protrudes between the side frames 20L and 20R. On the right side of a radiator 30, an oil cooler 50 to cool lubricating oil is positioned being combined with the radiator 40 in one body, and is connected to the discharge port of an oil pump (not shown), passing through a pipeline 35 and the side frame 20R on the right side, which is connected to the pipeline 35.

Description

[Detailed description of the invention] The present invention relates to a heat sink for a vehicle.

In a vehicle, for example, a motorcycle equipped with a water-cooled engine, a radiator (hereinafter referred to as a "radiator") for dissipating heat from the engine cooling water is usually installed between the front fork and side frame that support the front axle. It is located between the front.

Conventionally, as shown in FIG. 1, this radiator 1 has two tanks 2 and 3 arranged at a predetermined interval.

A large number of tubes 4 which are arranged in parallel between these tanks 2 and 3 and which communicate the tanks 2 and 3, and each of these tubes 4.
It is formed by cooling fins 5 interposed between the cooling fins 5 and increasing the surface area thereof. The coolant whose temperature has increased after cooling the engine flows into one tank 2 via the pipe line 2a, and this coolant cools while flowing through a large number of tubes 4 and then flows into the tank 3. However, after a certain amount of time, it flows out from the pipe and passage 3a of the tank 3 and cools the engine again. In this way, the conventional radiator 1 has a structure in which the cooling water inflow tank 2 and the cooling water outflow tank 3 are separated from each other. For this reason, such radiators can be installed in places with small installation space such as motorcycles, and in addition, they can be installed on the front fork.
If the cooling water is arranged so as not to interfere with the cooling water inlet and outlet, the installation of pipes connected to the inlet and outlet of the cooling water becomes complicated, which becomes a factor that reduces the ease of installation into the vehicle.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to facilitate the assembly of pipes to a heat radiator such as a radiator. In order to achieve this objective, in the present invention,
A plurality of passages constituting the heat dissipation section, a fluid distribution chamber that is connected in communication with one end of each of these passages and distributes fluid to each of these passages, and a fluid distribution chamber that is connected to one end of each of these passages and distributes fluid to each of the passages, and one end of each of the passages. In a III vehicle tank equipped with a fluid collection chamber that is connected in communication and collects the fluid that has flowed through each of these passages, the fluid distribution chamber and the fluid collection chamber are arranged adjacently and side by side, The present invention provides a radiator for a vehicle in which each of the passages is formed into a substantially U-shape.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2, FIG. 3, and FIG. 4 are an overall left side view, a top view of a main part, and a front view of a main part, respectively, of a motorcycle to which the present invention is applied. In FIGS. 2 to 4, a front shaft 4 is rotatably supported on a front shaft 13 connected to a head pipe 12 of a frame body 11 of a two-axle motor vehicle 10. A fuel tank 15 is located at the top of the body 11.
At the rear thereof, the rear @ 17 is pivotally supported by a rear forter (not shown) connected to the rear part of the engine 18, after which the rear @ 17 is driven by an engine 18 via a chain ] 9.

For example, a water-cooled V-type, one-cylinder engine 18 mounted on the automatic two-axle vehicle 10 is arranged and fixed in the center of the frame body 11, and carburetors 113a and 1.8a' are respectively mounted (J
The two cylinder heads 18b were damaged.

The front cylinder head 18b of 18b' projects toward the front shaft 14 from between the left and right side frames 2OL and 201R. Further, an exhaust pipe is attached to each cylinder of the engine 18, and exhaust pipes 2], L, 2+, and R are attached to the cylinder head 18b, respectively, and are
It is connected to exhaust pipes 22L, 22R attached to ab' and connected to mufflers 23L, 23R arranged on the left and right sides of the vehicle body.

Passages 24L, 24R, and 24L' are formed in a part of a cylinder water jacket (not shown) formed for each cylinder.

The pipe line 24 that communicates with the pipe line 24 at 24R' connects to the pipe line 2 at the connecting part 25a.
The pipe 25 is connected to the discharge port of a water pump 26 driven by the engine 18.

Engine 18 cooling water 114 outlet 2'zL, 27R.

27L' and 27R' are connected to a pipe 27 outside the engine j8, and this pipe 27 is connected to the inlet side of the thermostat 28. thermostat h2
The outlet side of 8 is in contact with a cooling water inlet side tank 45 of a radiator 40 formed on one side, for example, the left side, of a radiator 30, which will be described later, via a pipe line 29.
The cooling water outlet side tank 4G is connected to the pipe line 31. It is connected to the water intake of the water pump 26 through the left side frame 2OL and a pipe 32. This thermostat 1-28 is arranged to control the opening and closing of the communication between the pipes 27 and 29, and interrupts the communication between the warm-up 14-yoko pipes 27 and 29 to stop the circulation of cooling water. It operates to hasten the warm-up of the engine 18.

The radiator 30 is disposed between the front fork [3] and the left and right side frames 2OL, 2OR, and mounting parts 33L, 33R formed at the upper ends thereof are fixed to the upper parts of the left and right side frames 2OL, 2OR, respectively. ing. This radiator 30 has a large heat radiating area, and the cylinder head 1.8 that protrudes between the size 1 and the frame 2OL and 2OR.
) Its shape is gate-shaped so as not to interfere with it. On one side, for example, the right side of the radiator 30, an oil cooler 50 for cooling the lubricating oil of the two-axle motor vehicle 10 is connected to the radiator 40.
The inlet side tank 5 of the oil cooler 50 is formed integrally with the inlet side tank 5 of the oil cooler 50.
5 is connected to a discharge port of an oil pump (not shown) via a pipe 35 and the right side frame 2OR communicating with the pipe 3G, and an outlet side tank 56 of the oil cooler 50 is connected to a pipe 3G.
is connected to an oil filter (not shown), and the oil discharged from the oil pump is cooled by an oil cooler 50 and then sent to the engine 18 via the oil filter.
It is supplied to other parts of the motorcycle 10.

As shown in FIG. 5, a fan 37 for the cooling gradient 1 is disposed between the radiator 30 and the carburetor 8a and at the center of the radiator 30. This fan 37 is controlled by the temperature of the engine 18, and does not operate when the temperature of the engine 18 is low, but operates when the temperature of the engine 18 rises, and directs the air in front of the radiator 30 to the carburetor 18a.
The cooling efficiency of the heat radiator 30 is increased by forcibly introducing it to the side. Further, the fan 37 is also driven when it is necessary to cool the radiator 30 when cooling air cannot be obtained from running.

FIG. 6 is a front view of the radiator 30. This radiator 30 has a passage 42 formed by joining passage pieces 41 for forming a radiator shown in FIG. 7, and a passage 52 formed by joining passage pieces 51 for forming an oil cooler shown in FIG. The radiator 40 and the oil cooler 5o are each formed by joining a plurality of them in parallel, and the radiator 40 and the oil cooler 5o are integrated.

The passage piece 41 of the radiator 40 is formed by bending a rectangular plate material made of aluminum by press working, as shown in the front view and cross-sectional view of FIGS. 7(a) and 7(b), respectively. A substantially U-shaped passage portion 41a is formed on substantially the entire surface of the piece 41 in a bulging manner. Then, a bulging portion 4], b, 41c is formed which gathers on one end side of the passage piece 41, and this bulging portion 41b.

Nine communication holes 41d and 41e are provided in each of the holes 41c.

As shown in FIG. 7(c), such passage pieces 41 are arranged as a set of two and facing each other with their respective passage parts 41a aligned, and a flange 4 is formed on the outer peripheral portion of each passage piece 41.
partition portions 41. G are welded together to form one abbreviated U.
A letter-shaped passage 42 is formed.

The middle part of this passage 42 has a cross section shown in FIG.
As shown in FIG. 2, passages 42a and 42b are defined by the partition portion 41g, and passages 42a, 42b are formed at one end of the passage 42 by pasting the respective bulging portions 4], b, and 41c together. Tank portions 42c, 4 communicating with 42b
2d is formed.

Since the passages 42a and 421] communicate with the tank parts 42c and 42d on the opposite side, the fluid flowing into the tank part 42c first hangs down the passage 42a, then ascends the passage 42b and flows out into the tank part 42d. Ru.

Similarly to the passage piece 41, the passage piece 51 of the oil cooler 50 is also formed by bending, for example, a rectangular plate made of aluminum by press working. A front view of the passage piece 51, a side view of the passage 52 formed by joining the passage pieces 51, and a cross-sectional view of the intermediate portion of the passage 52 are shown in FIGS. 8(a), 8(b), and 8(c), respectively.

The passage piece 5I covers substantially the entire surface of the passage piece 51, and the passage part 5]a
A bulge is formed. The passage portions 5], a are further bulged at both ends of the passage piece 51, and communication holes 51d, 51e are formed in the bulges 51b, 5], c, respectively. As shown in FIG. 8(b), such passage pieces 51 are arranged in pairs facing each other with their respective passage parts 51a aligned, and a flange formed on the outer periphery of each passage piece 51 is used. The portions 51f are welded together to form one substantially straight passage 5.
form 2. There are bulges 51b at both ends of the passage 52.
.

Tank parts 52a and 52b communicating with the passage 52 are formed by bonding the parts 51c together. Therefore, the fluid that has flowed into the tank portion 52a hangs down the passage 52 and flows out into the tank portion 52b. Further, fins 53 are provided inside the passage 52 along the longitudinal direction to increase the contact area between the oil and the inner surface of the passage 52, thereby promoting heat dissipation of the oil having a large heat capacity.

A passageway 42 formed as described above. ．． 52 are arranged in parallel as shown in FIG. Then, there is a passage piece 41' which does not have communication holes 41d, 4] and e formed in the portion where the passages 42 and 52 touch, and a passage piece 41' which has no communication holes 41d and 41e, respectively, and a communication hole 5 similar to this passage piece 4bi.
The radiator 40 and the oil cooler 50 are defined by interposing a passage piece 51' in which no holes 1d and 51e are formed.

Note that another shielding plate may be interposed between the passages 42 and 52.

Next, each communication hole 4 of each tank part 42c, 42d and 52a, 52b of each channel|path 42 comrades and each channel|path 52 comrades
1 d, 41 e, 51 d, 51 e are respectively -
Adjacent end faces of the respective bulges are welded to each other so as to be connected to each other in a row, and the collective communication part of the tank part 42c and the collective communication part of the tank part 42d are respectively used as the tank 45 as a fluid distribution chamber of the radiator 40. and a tank 4G as a fluid combination chamber, and similarly, the respective combination communication parts of the tank parts 52a and 52b are connected to two tanks 55 and 56 of the oil cooler 50.
shall be.

In addition, the passage 42 disposed in the center of the radiator 30 is formed using a short passage piece 41, and the radiator 30 is shaped like a gate, as described above with the cylinder head 18b (
A relief portion 30a (Fig. 3) is formed.

Then, fins 61 are arranged in the spaces formed between each passage 42 and between each passage 52, and the fins 61 are welded to the outer peripheral side walls of each adjacent passage 42,52, and the radiator 3
0 heat dissipation area and improve cooling efficiency.

In this way, the radiator 30 is formed by integrating the radiator 40 and the oil cooler 50.

The radiator 30 having such a configuration is installed in the tank 45 of the radiator 40.
If the cooling water is installed as described above so that it is on the front side with respect to the running direction of the motorcycle 10, the cooling water flows into the tank 45 and then hangs down each passage 42a on the front side with respect to the running direction, and then flows to the rear side. up each passage 42b of the outflow side tank 4.
6.

In this way, while flowing through each passage 42, the cooling water whose temperature has been raised by the blowing air is cooled down.

Since the radiator 40 is gate-shaped as described above, there is a short passage 42 disposed in the center and long passages 4 on both sides.
The flow time of the cooling water flowing through the two channels differs, and the cooling temperature varies depending on the flow path.

Therefore, as shown in FIG. 5 mentioned above, the radiator 40
By installing the fan 37 so as to face the central part of the cooling water, the cooling temperature of the cooling water flowing through the central part and the passages 42 on both sides is made uniform. In addition, by making the width t (FIG. 7(d)) of the passage 42 in the center narrower than that on both sides, the flow rate of cooling water flowing into the center is reduced and the cooling effect in the center is enhanced. Or each passage 42 in the center
By increasing the density of the fins 61 interposed therebetween, the cooling capacity may be increased and the cooling temperature of the entire radiator 40 may be made uniform.

In addition, in the above-mentioned embodiment, the two tanks 4 of the radiator 40
5.46 is the bulge portion 42c of the passage piece 41, respectively.

42 d, and the substantially U-shaped passage 42 is also formed using the same passage piece 41 with a bulging passage portion 4], but the present invention is not limited to this. Instead, separate tanks for inflow and outflow may be provided, and these may be arranged adjacent to each other, and both tanks may be communicated with each other by a substantially U-shaped tube. Also, it does not have to be gate-shaped like the above embodiment;
Furthermore, it does not have to be a vertical flow type heat radiator, but may be a horizontal flow type heat radiator. Also, two tanks 45°4
6 and the pipes 29, 31 do not need to be provided close to each other, and may be provided at appropriate positions where connection with the pipes 29, 31 is easy.

As explained above, the radiator according to the present invention has a number of passages constituting the heat radiating section, and a fluid distribution chamber that is connected to each end of each of these passages and distributes fluid to each of these passages. , a radiator for a vehicle having a fluid collection chamber of 4 m connected to the other end of each of the passages and collecting the fluid flowing through each passage, wherein the fluid distribution chamber and the fluid collection chamber are arranged in close proximity. and each passage is approximately U.
Because it is shaped like a letter, it is easy to assemble the radiator and external pipes, and the length of the passage related to heat radiation can be freely set, and the length of the passage is shorter than that of a radiator of the same size. The longer the length, the better the heat dissipation effect.

[Brief explanation of drawings]

Fig. 1 is an overview of a conventional heat radiator (radiator), Fig. 2 is an overall side view of a motorcycle equipped with a radiator according to the present invention, and Figs. The top view and front view of the main parts of the two-wheeled vehicle, Figure 5, are shown in Figure 2. 6 is a front view showing an embodiment of the vehicle heat radiator according to the present invention shown in FIG. 2, and FIGS. 7A and 7B are respectively FIG. A front view showing an example of passage pieces forming each passage on the radiator side of the radiator shown in FIG.
A sectional view taken along arrow B-B in a), (c) a partially cutaway side view of a passage formed by joining the passage pieces shown in (d), and (d) ), Fig. 8 (a)
) is a front view showing an example of the passage piece forming the passage on the oil cooler side of the radiator shown in Fig. 6, and Fig. 6(b) is a front view showing an embodiment of the passage piece forming the passage on the oil cooler side of the radiator shown in Fig. 6, and Fig. 6(b) is a front view showing an embodiment of the passage piece forming the passage on the oil cooler side of the radiator shown in Fig. 6. A partially cutaway side view of the passage, FIG. 30...Radiator, 40...Radiator, 41...
Passage piece, 4]a-passage portion, 41b, 41c... bulging portion, 41d,'! 1e... Communication hole, 41'... Shielding plate, 42... Passage, 42c, 42d... Tank part, 4
5... Tank (fluid distribution chamber), 46... Tank (fluid collection chamber), 50... Oil cooler. Applicant Honda Motor Co., Ltd. Agent Patent Attorney Toshihiko Hirobe Figure 1 Figure 3 Figure 4 Figure 7 (c) (a) (d) (b) Figure 8 (b) (a) (C)

Claims (1)

[Claims] 1. A plurality of passages forming a heat dissipation section, a fluid distribution chamber that is connected in communication with one end of each of the passages and distributes fluid to each of these passages, and the other end of each of the passages. In the radiator for a vehicle, the vehicle radiator is provided with a fluid collection chamber that is connected in communication with a section and collects the fluid that has flowed through each of these passages, the fluid distribution chamber and the fluid collection chamber are arranged in close proximity and in parallel; A radiator for a vehicle, characterized in that each passage is formed into a substantially U-shape.