JPH03132491A - Heat exchanger for motorcycle/motor tricycle - Google Patents

Abstract

PURPOSE:To enhance the heat exchange characteristics by constructing a heat exchange device, arranged between the front wheel and an engine, from a main heat exchanger having a great facade area with the core surface directed forward and an assist heat exchanger having a small facade area being in connection with the side end of the main heat exchanger. CONSTITUTION:A heat exchange device arranged between the front wheel 1 of a motorcycle and its engine 2 is composed of a main heat exchanger 5 in curved form having a large facade area with the core surface directed forward and an assist heat exchanger 6 having small facade area being arranged on both sides of the first named exchanger. Tanks 4 are installed on both sides of this main heat exchanger 5, and the assist heat exchanger 6 is put in communication with each tank 4 through an interposed member 15. A partitioning member 28 is installed at each tank 4 in its middle in the vertical direction, and the engine cooling water shall flow to the main heat exchanger 5 and assist heat exchanger 6 as shown by arrow in the attached illustration. This accomplishes effective utilization of the air stream flowing along the sides of the motorcycle, which enhances the cooling efficiency of the cooling water.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is adapted to the outer peripheral shape of a 69J two-wheeled vehicle or a motorcycle, and effectively utilizes the airflow flowing along the side of the motorcycle or three-wheeled vehicle. Regarding heat exchangers.

(Prior art) Heat exchangers for motorcycles cannot have a large width due to limitations of the vehicle body structure.The heat exchanger core's heat dissipation area must also be relatively small due to the follower type, which reduces the heat exchange performance. improvement has reached its limit.

A similar problem also occurred in motor tricycles.

Therefore, one of the applicants of the present invention has proposed, in Japanese Patent Application Laid-Open No. 64-29612, that a heat exchanger is installed in a motorcycle by utilizing the space below the motorcycle, and a second heat exchanger is placed there. Although this is advantageous in increasing the heat radiation area of the heat exchanger, such an arrangement is often not possible due to squilling.

[Means for Solving the Problems] Therefore, the present invention utilizes the air flow passing through the side of the vehicle body of a motorcycle or tricycle, and has a simple structure in which an auxiliary heat exchanger is placed there to improve heat exchange performance. The purpose is to provide something, and in order to achieve that purpose, the following structure is adopted.

The heat exchanger for motorcycles and tricycles according to the present invention is located between a front wheel 1 and an engine 2, and the core 3 is directed forward so that the heat exchanger has a large front surface area on the central axis of the vehicle body. A heat exchanger 5 is arranged.

A secondary heat exchanger 6 with a small front surface area is provided connected to the side end of this main heat exchanger.

Also, a preferred embodiment of the invention is that the main heat exchanger 5 and the secondary heat exchanger 6 are housed within the cowl 27 of the auto-tony vehicle. Furthermore, the width of the core portion 7 of the secondary heat exchanger 6 in the air flow direction is longer than that of the core 3 of the main heat exchanger 5 and protrudes rearward.

[Function] According to the heat exchanger for automobiles and -τ wheels of the present invention, the secondary 2-no exchanger 6 allows the airflow flowing along the sides of the motorcycle or tricycle or along the inner surface of the cowl 27 to The secondary heat exchanger 6 can be efficiently cooled by effectively utilizing the airflow flowing through the air. Thereby, the heat dissipation performance of the entire heat exchanger for motorcycles and tricycles can be improved. Moreover, this secondary heat exchanger 6 has a small front area and is connected to the main heat exchanger 5, so the structure is extremely simple, and the width of the automatic wheeled vehicle can be increased. I have no choice but to take it.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings. FIG. 1 is a side view of a motorcycle having a heat exchanger of the present invention, and FIG. 2 is a schematic plan view showing the inside of a cowl 27 thereof. Fig. 3 to Fig. 5 show the heat exchanger, Fig. 3 is a plan view of the heat exchanger, Fig. 4 is a rear view of the same, Fig. 5 is a side view of the same, and Fig. 6 is a follower of the heat exchanger. 7 is a cross-sectional view taken along the line ■--■ in FIG. 5, and FIG. 8 is a cross-sectional view taken along the line {--V} in FIG. 5. Further, FIG. 9 is an explanatory diagram showing a cooling water flow path in the same embodiment of the present invention.

In the heat exchanger of this embodiment, as shown in FIG. 3, tanks 4 are arranged on both sides of a curved main heat exchanger 5, and subordinate heat exchangers 6 are connected to both tanks 4 through intervening bodies 15. are installed in communication with each other. In addition, in Fig. 4, each tank 4
A partition 28 is provided in the middle part in the vertical direction.

The engine cooling water then flows through the main heat exchanger 5 and the secondary heat exchanger 6 as shown by the arrows in FIG. That is, high-temperature engine cooling water flows from the inlet vibe 12 to above the partition 28 of the right tank 4.

A portion of the cooling water flows through the upper part of the core 3 and enters the upper part of the left tank 4. From there, it flows through the left side secondary heat exchanger 6 and flows into the lower part of the left side tank 4. In addition, the other part of the cooling water in the upper part of the right tank 4 is transferred to the right slave heat exchanger 6.
The liquid flows through the lower part of the core 3 and flows out from the outlet vibrator 13.

In this embodiment, the main heat exchanger 5 is a corrugated fin type heat exchanger made of aluminum, and has a pair of tanks 4, 4 spaced apart from each other on the left and right, and has both ends of a large number of parallel flat tubes on each tube plate. The part penetrates liquid-tightly. Corrugated fins are in contact between the respective flat tubes, and the contact portions are fixed by brazing. Further, a pair of inlet/outlet holes are opened on the outer surfaces of the pair of tanks 4 and are vertically spaced apart from each other, and these are the inlets 24 and 24 of the secondary heat exchanger 6 . Exit 2
5. Next, this secondary heat exchanger 6 is also made of aluminum and is formed as shown in FIGS. 5 to 8.

That is, a plurality of elements 8 are laminated in the thickness direction. Each element 8 is formed by stacking a pair of dish-shaped plates in opposite directions and brazing their peripheral edges in a liquid-tight manner. As shown in FIGS. 6 and 7, the upper portions of the plate-shaped plates 1 form a cooling water tank portion, and an inlet 24 and an outlet 25 are opened in the tank portions, respectively. A bolt hole 17 is provided in the middle of the two holes, and the eighth
As shown in the figure, a spacer is interposed in the bolt hole 17, and a pair of inlets 24. The space between the exits 25 is closed. Further, each element 8 is formed so that its one end portion is thicker than the other portion. A spacer convex portion 22 is provided at the other end of each element 8 in a protruding manner.

In this embodiment, four elements 8 are stacked, a corrugated fin 21 is interposed between them, and the respective contact portions are fixed by brazing in a fluid-tight manner. Note that no entrance/exit hole is provided in the outer plate of the element 8 located at the outermost position. Further, the entrance/exit hole of the element 8 located at the innermost position is provided with a boss portion, which is formed as shown in FIG. Inside each element 8 formed in this manner, a partitioning protrusion 23 is provided protrudingly on its center line, and cooling water flows in from the inlet 24 and flows in a U-shape, bypassing the tip of the partitioning protrusion 23. Exit 25 is reached. The heat exchanger constructed in this manner is mounted on a motorcycle as shown in FIGS. 1 and 2. That is, the present heat exchanger is disposed between the engine 2 and the front wheels 1 and is housed inside the cowl 27.

In this embodiment, the main heat exchanger 5 also has a pair of shrouds 10 on the back side of its core 3 as shown in FIGS. 3 and 4.
is provided, and is fixed to a bracket 1-19 provided on the top of the core 3.

On the outer periphery of the loud 10, Miki stays whose ends are fixed are formed radially, and a fan motor 9 is mounted at the center of the Miki stays.
is supported. Then, a boss portion of a fan 29 shown in FIG. 3 is fixed to the rotating shaft of the fan motor 9. Further, a filler neck 33 for water supply is provided protrudingly from the upper end of the tank 4, and the water supply cap 18 is removably fitted onto the filler neck 33. A pressure valve (not shown) is provided protruding from the inner surface of the water supply cap 18.

Further, as shown in FIGS. 3 and 4, a surge tank communication pipe 20 is protruded from the filler neck 33, and one end of the port is connected to the surge tank communication pipe 20, and the other end communicates with a surge tank (not shown). . These water supply cap 18 and the fan 29 are known.

Next, in the embodiment, as shown in FIG. 2, the main heat exchanger 5 is arranged on the center line of the vehicle body, and the concave curved surface of the core 3 is directed forward. The longitudinal direction of the subordinate heat exchanger 6 is the cowl 27.
It is located approximately parallel to the inner surface of the engine 2 and on the side of the engine 2. Further, an opening 30 is formed in the cowl 27 as shown in FIG. The position of this opening 30 is determined by considering the shape of the cowl 27, the arrangement of the main heat exchanger 5 and the secondary heat exchanger 6, etc.
The cowl 27 is formed so that air circulation within the cowl 27 is optimized. In this heat exchanger arranged in this way, as the motorcycle runs, air flows in from the front end opening of the cowl 27, and a large amount of air flows into the main heat exchanger 5, and the air and the tank 4. The air flowing laterally passes through the secondary heat exchanger 6 and flows out from the opening 30. In addition, this cowl 27
As is clear from FIG. 2, the distal end thereof is formed so as to be narrowed toward the center toward the front side of the vehicle body, and there is a large opening at the distal end. Therefore, a relatively wide space is formed within the cowl 27 from a portion slightly rearward of the tip thereof. Therefore, in this embodiment, the heat-dependent exchanger 6 is arranged so as to match the space, and the air flow is effectively guided to the heat-dependent exchanger.

This secondary heat exchanger 6 has laminated radiators arranged in parallel in the front-rear direction to have a narrow front surface area and a large heat dissipation area. As a whole, air guiding and scavenging are carried out smoothly.

[Modified example] Figs. 13 and 14 show other embodiments of the secondary heat exchanger 6. In this example, the outer surface of one side of the secondary heat exchanger 6 is formed in a bellows shape, and the inside thereof is formed into a bellows shape. A partition is provided to divide it into sections. The cooling water flowing inside the partition bypasses the tip of the partition and makes a 0 U turn. Next, FIG. 15 shows a third embodiment of the secondary heat exchanger 6, in which the outer periphery is formed in the shape of a water jacket of an engine.

Next, FIGS. 16 and 17 show a subordinate heat exchanger 6 according to a fourth embodiment of the present invention, in which cooling water flowing into the upper header flows to the lower header via a plurality of tubes. Plate fins are arranged on the outer surface of each tube so that the longitudinal direction thereof extends in the air flow direction.

Next, the cooling water flow path is not limited to the embodiment shown in FIG. 9, but may be as shown in FIGS. 10 to 12. 10th
In the figure, engine cooling water first flows into the secondary heat exchanger 6, part of it flows inside the secondary heat exchanger 6, and the other cooling water directly flows into the inlet side tank of the main heat exchanger 5. . and,
It flows through the tubes of the core 3 of the main heat exchanger 5 and reaches the outlet tank. A portion of the cooling water in the outlet tank flows through the left secondary heat exchanger 6 and is led to the engine, and the other portion is led directly to the engine.

Next, in the embodiment shown in FIG. 11, the engine cooling water flows from the upper part of the heat slave exchanger 6, whereas in the embodiment shown in FIG. 10, the engine cooling water flows from the lower part of the heat slave exchanger 6. .

Furthermore, in the embodiment shown in FIG. 12, all of the engine cooling water that has flowed in from the lower end of the secondary heat exchanger 6 flows through the secondary heat exchanger 6, and +1' of the main heat exchanger 5 flows through the secondary heat exchanger 6. Then, the left side secondary heat exchanger 6 is turned in a U-turn, and the heat flows through the core of the lower half of the main heat exchanger 5 and is returned to the engine.

13. The heat exchanger of the present invention is, of course, not limited to the embodiments described above. For example, if there is some space forward at the front end in the cowl, the longitudinal direction of the secondary heat exchanger may be arranged as shown in FIG. Contrary to the embodiment, it may be arranged so as to extend toward the front of the vehicle body.

Furthermore, the application of the heat exchanger of the present invention is not limited to motorcycles,
Needless to say, it can also be used for narrow-width motorized tricycles.

(Effects of the Invention) The heat exchanger for motorcycles and tricycles of the present invention has a secondary heat exchanger 6 with a small front surface area of 1 2 on the outer surface of the main heat exchanger 5 with a large front surface area. , main heat exchanger 5
The secondary heat exchanger 6
Heat exchange can be performed at Furthermore, since the secondary heat exchanger 6 has a small front surface area, it is possible to prevent an increase in the vehicle body width of the motorcycle or tricycle.

Next, the invention described in claim 2 provides a secondary heat exchanger 6
The core part 7 of the main heat exchanger 5 is longer than that of the core 3 of the main heat exchanger 5 and protrudes forward or backward, so that the airflow flowing along the side of the motorcycle or tricycle can be used over a longer distance. This can further improve the heat dissipation effect. Furthermore, since the core portion 7 protrudes rearward, it hardly becomes a hindrance to driving or increases air resistance.

Next, the invention described in claim 3 provides a main heat exchanger 5 and an accidental exchanger 2ii6 in the cowl 27 of a motorcycle or tricycle.
The secondary heat exchanger 6 can be cooled by effectively utilizing the airflow flowing along the vicinity of the inner surface of the cowl.

[Brief explanation of the drawing]

FIG. 1 is a side view of a motorcycle having a heat exchanger according to the present invention, and FIG. 2 is a schematic plan view showing the inside of a cowl 27 thereof. 3 to 5 show the same heat exchanger, FIG. 3 is its plane circle, FIG. 4 is its back view, and FIG. 5 is its side view.
Fig. 6 is a rear view of the iK heat exchanger 6 of the same heat exchanger, Fig. 7 is a sectional view taken along the ■-■ arrow in Fig. 5, and Fig. 8 is the -■-
■It is an arrow sectional view. Further, FIG. 9 is an explanatory diagram showing a cooling water flow path in the same embodiment of the present invention. 10 to 12 show other embodiments of cooling water flowing through the secondary heat exchanger 6 and the main heat exchanger 5, respectively. Figures 13 and 14 show a second embodiment of the secondary heat exchanger 6 of the present invention, in which Figure 13 is a schematic perspective view thereof, Figure 14 is a schematic cross-sectional view thereof, and Figure 15 is a heat exchanger with the same diameter. FIG. 16 is a schematic cross-sectional view of the third embodiment of the container 6, FIG. 16 is a schematic perspective view of the fourth embodiment, and FIG. 17 is a longitudinal cross-sectional view showing a part of the tube. 1...Front wheel 2...Engine 3...
Core 4... Tank 3 4 5... Main heat exchanger 6... Secondary heat exchanger 7...
・Core part 8... Element 9... Fan motor 10... Shroud 11... Porto 12... Population vibe 13... Exit vibe 1
4... Take A] Flange 15... Intermediate body
16...0 ring groove 17...bolt hole
18... Water supply cap 19... Bracket 20... Zurge tank communication pipe 21... Corrugated fin 22... Convex portion 23...
・Convex part for partition

Claims (1)

[Claims] 1) In a heat exchanger for a motorcycle or tricycle located between a front wheel (1) and an engine (2), the core (3) surface is directed forward and lies on the central axis of the vehicle body. A main heat exchanger (5) with a large front surface area disposed at the main heat exchanger (5), and a secondary heat exchanger (6) with a small front surface area connected to the side end of the main heat exchanger (5). A heat exchanger for motorcycles and tricycles characterized by the following. 2) In a heat exchanger for motorcycles and tricycles located between the front wheel (1) and the engine (2), the front surface area is located on the central axis of the vehicle body with the core (3) surface facing forward. a large main heat exchanger (5), and a secondary heat exchanger (6) with a small front surface area connected to a side end of the main heat exchanger (5), A heat exchanger for motorcycles and tricycles in which the width of the core portion (7) of (6) in the air flow direction is longer than that of the core (3) of the main heat exchanger (5) and protrudes toward the front or rear of the vehicle body. . 3) In a heat exchanger for motorcycles and tricycles located between the front wheel (1) and the engine (2), the front surface area is located on the central axis of the vehicle body with the core (3) surface facing forward. a large main heat exchanger (5), and a secondary heat exchanger (6) with a small front surface area connected to a side end of the main heat exchanger (5), (5) and a subordinate heat exchanger (6) are housed in a cowl (27) of a motorcycle or tricycle.