JPH07113594A - Compound core-type radiator - Google Patents

Abstract

PURPOSE:To make assembly and dismounting work of a radiator easy by a method wherein both upper and lower ends of cores are rested on upper and lower support members via cushioning pads and the cores and header tanks are connected by pipe joints so that the cores are slightly relatively movable in the axial direction. CONSTITUTION:When a radiator is assembled, a pair of header tanks 11 are arranged at both upper and lower ends of side members 1 and the ends of the header tanks 11 are fixed on the side members 1 via brackets 21. Then, pipe joints 12 are inserted between connecting pipes 7 protruding from the upper and lower ends of cores 8 and connecting pipes 10 of the upper and lower header tanks 11. In addition, cushioning pads 9 are provided between the connecting pipes 7 of the cores 8 and small tanks 6. Cap nuts 13 of the pipe joints 12 are tightened to hold the cores 8 at specified positions. Then, a support member 3 is inserted from side of the cores 8, U-shaped notches 2 are fitted on the connecting pipes 7, and both ends of the support member 3 are fixed on the side members 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiator in which a plurality of cores are arranged in parallel, which is used for a large construction vehicle or the like, and which has improved seismic resistance, assemblability and maintainability.

[0002]

2. Description of the Related Art Large vehicles for construction or civil engineering, such as tractors and cranes, are equipped with large engine cooling radiators. As such an engine cooling radiator, there is known a radiator in which a plurality of heat exchanger cores are arranged in parallel and cooling water is supplied to the respective heat exchanger cores via upper and lower headers. Such a composite core type radiator is
When one core breaks down due to water leakage or the like, it has the characteristic of excellent maintainability that only the core needs to be replaced or repaired.

[0003]

However, such a composite core type radiator has a drawback that it is troublesome to assemble and dismount the core because a large number of cores are arranged in parallel. Further, since each core is independent, there is a drawback that the support structure is inevitably complicated. Therefore, the present invention has the following configuration in order to solve the above problems.

[0004]

The composite core type radiator of the present invention comprises a pair of side members 1, 1, a pair of support members 3, 3, a plurality of cores 8, a buffer pad 9, and a pair of header tanks 11, 11. And a plurality of pipe joints 12. The pair of side members 1 and 1 of the present invention are spaced apart from each other and erected on both sides. The pair of support members 3 and 3 are located near the upper and lower end portions of the side members 1 and 1, respectively, and the support members 3 and 3 are provided at both ends of the side members 1 and 1 in parallel with each other.
3 is detachably fixed. The support members 3 and 3 are separated from each other in the longitudinal direction by a plurality of U's at predetermined intervals.
A letter-shaped notch 2 is provided. In addition, multiple cores 8
In this case, a large number of fins 5 are arranged on the outer surface of a large number of tubes 4 arranged in parallel, and both ends of the respective tubes 4 communicate with a pair of upper and lower small tanks 6, 6. At the same time, short connecting pipes 7 are provided on the upper surface of the upper small tank 6 and the lower surface of the lower small tank 6, respectively. The side surface of this connecting pipe 7
The support members 3 and 3 are fitted in the U-shaped cutouts 2 relatively detachably from the side.

The cushioning pad 9 is made of an elastic material interposed between the upper and lower small tanks 6 and 6 of the respective cores 8 and the support materials 3 and 3. Further, the header tanks 11, 11 are opposed to the support members 3, 3 and both longitudinal end portions thereof are supported by the upper and lower ends of the side members 1, 1, respectively, and a plurality of short connecting pipes 10 are provided on the opposing surfaces at the predetermined intervals. It was installed in. Furthermore, the pipe joint 12 is provided with the openings of the connecting pipes 7 of the upper and lower small tanks 6 and 6 of the respective cores 8 and the header tanks 11 and 11.
The connection pipe 10 is connected to the opening of the connection pipe 10 so as to be detachable and to be relatively movable in the axial direction thereof.

[0006]

In the composite core type radiator of the present invention, the upper and lower ends of each core 8 are supported by the pair of upper and lower support members 3, 3 via the cushioning pads 9. Therefore, each core 8 can be slightly elastically moved in the axial direction with respect to the impact. Moreover, since the core 8 and the header tank 11 are connected to each other by the pipe joint 12 so as to be detachable and slightly movable in the axial direction, the header tank 11 and the pipe joint 12 are connected to each other by an external force. Alternatively, there is no possibility that a crack will occur between the pipe joint 12 and the small tank 6. Further, since the support member 3 has the U-shaped notch 2 into which the side of the connecting pipe 7 is detachably fitted, it is extremely easy to assemble each core 8 and to support it on the support member 3. Therefore, it becomes a composite core radiator that is easy to assemble.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a perspective view of a main part of the present composite core radiator, showing an example of the assembling order. FIG. 2 is a perspective view of an essential part showing the assembled state.
Further, FIG. 3 is a longitudinal sectional view on the axis of FIG. 2, showing a state in which the upper cap nut 13 is loosened. Further, FIG. 4 is a front view showing the entire composite core type radiator, FIG.
Is a plan view of the same, and FIG. 6 is a partially enlarged view of FIG. As shown in FIG. 4, a pair of side members 1 and 1 are erected on both sides of the composite core type radiator, and header tanks 11 and 11 are provided on both upper and lower ends thereof via brackets 21 at both longitudinal end portions thereof. It is supported. In addition, the upper and lower header tanks
A pair of support members 3, 3 are arranged in parallel to the pipe joint 12 with a space slightly longer than that of the pipe joint 12, and both longitudinal ends thereof are detachably fixed to the side member 1. The core 8 is supported between the pair of upper and lower support members 3 via a cushion pad 9. The connecting pipe 7 of each core 8 and the connecting pipe 10 of the header tank 11 are connected by a pipe joint 12 so as to be relatively movable in the axial direction.

A plurality of intermediate plates 26 are arranged in the center of the core 8. This intermediate plate 26 has a core 8
The plate-shaped fin 5 has a plate thickness remarkably thicker than that of the plate-shaped fin 5, and its planar shape is similar to the fin 5 in that a large number of tube insertion holes (not shown) are formed and the tube 4 is penetrated therein. . And this intermediate plate
The central portion of the core 8 on the outermost side is supported by the central portion of the side member 1 via a bolt and a bracket 21. The cores 8 are connected to each other in a parallel direction via the connecting plate 20. Next, the header tank 11 has a water supply cap 17 removably attached to its upper surface and an inlet pipe on its side surface.
18 are projected. Then, one end of a hose (not shown) is connected to the inlet pipe 18, and the other end is connected to the water jacket of the engine. Further, the outlet pipe 19 is also provided on the side surface of the lower header tank 11, and one end of a hose (not shown) is connected to the outlet pipe 19, and the other end of the hose is connected to the water jacket of the engine.
A circulation path for engine cooling water is formed between the engine and the composite core radiator.

Next, this embodiment will be described in more detail. The core 8 of the composite core type radiator is shown in FIGS.
As shown in FIG. 5, a large number of flat tubes 4 are inserted into the tube insertion holes (not shown) of a large number of fins 5 arranged in parallel with a small gap, and the upper and lower ends thereof penetrate the small tank 6 in a liquid-tight manner. As shown in FIG. 3, one end of a relatively short connecting pipe 7 is joined to the outer surface of the small tank 6 by means such as brazing to connect the opening to the inside of the small tank 6. Further, the header tank 11 is formed in a tubular shape having an elongated cross section with both ends closed, and one end of the connecting pipe 10 is fixed to the lower surface side in FIG. 3 by means such as brazing, so that the inside of the connecting pipe 10 and the header tank 11 are It communicates with the inside of 11. Header tank 11
Both ends in the longitudinal direction of the are fixed by a bolt 15 via a bracket 21 in a detachable manner.

Next, the support member 3 is made of a plate member having an L-shaped cross section as shown in FIGS. 1 and 2, and mounting flange portions are integrally provided at both ends thereof, and bolt holes 24 are formed therein. Has been done. Further, a U-shaped notch 2 is provided from one edge on the plane of the support material 3, and a plurality of U-shaped notches 2 are formed at regular intervals in the longitudinal direction. The pitch between the U-shaped cutouts 2 is slightly larger than the width of the core 8. Further, the inner width of the U-shaped cutout portion 2 itself is equal to that of the connecting pipe 7.
Is slightly larger than the diameter of the cap nut 13 and the cushion pad 9 described later.

As shown in FIG. 3, the pipe joint 12 is formed with a tubular joint body 23, a pair of cap nuts 13 screwed to the upper and lower ends thereof, and upper and lower ends of the joint body 23. The packing 14 has a trapezoidal outer periphery and a hole 14 formed in the center thereof. Then, the joint body 23 is arranged between the connecting pipe 10 of the header tank 11 and the connecting pipe 7 of the small tank 6, and the cap nut 13 is fastened and fixed via the packing 14 to fix the header tank.
It is possible to fluid-tightly communicate between 11 and each of the small tanks 6. The packing 14 is made of an elastic material such as rubber, and the joint body 23 is slightly movable in the axial direction with respect to the small tank 6 and the connecting pipe 10. Next, buffer pad 9
Is made of an elastic material such as rubber and is slightly thicker than the gap between the outer surface of the support material 3 and the outer surface of the small tank 6. As is apparent from FIG. 1, the cushion pad 9 has a circular outer periphery and a central hole, and the central hole is inserted from above the connecting pipe 7. Then, with the support material 3 fixed to the side material 1 by the bolts 15, the small tank 6
Is press-fitted into the opposing surfaces of the support material 3 and the support material 3 so that the small tank 6 is substantially sandwiched between the pair of upper and lower support materials 3.

Next, an example of the order of assembling the composite core type radiator will be described. First, a pair of header tanks 11 and 11 are arranged at the upper and lower ends of the side member 1, and both end portions of the header tank 11 are fastened and fixed to the side member 1 via the brackets 21. Next, the pipe joint 12 is mounted between the connecting pipe 7 projecting from the lower end of the core 8 and the connecting pipe 10 of the lower header tank 11, and then the connecting pipe 7 on the upper side of the core 8 and the upper side. The pipe joint 12 is also inserted between the header tank 11 and the connecting pipe 10. A buffer pad 9 is attached to each of the connecting pipes 7 of the core 8 in advance. Therefore, the cap nuts 13 of the respective pipe joints 12 are fastened and fixed to hold the core 8 at a predetermined position.

In this way, a large number of cores 8 are arranged between the upper and lower header tanks 11, 11 via the pipe joint 12. Next, as shown in FIG. 1, the support material 3 is inserted from the side of the core 8, and the respective U-shaped notches 2 are fitted into the connecting pipes 7 of the core 8. Next, the bolt holes 24 at both ends of the support member 3 in the longitudinal direction are aligned with the bolt holes 24 of the side member 1, the bolts 15 are inserted there, and both ends of the support member 3 are fastened and fixed via the nuts 16. At the same time, the intermediate plates 26 located at the longitudinal center of the respective cores 8 are connected to each other by connecting plates.
20 and fasteners are connected and fixed to each other. Then, the intermediate plates 26 of the cores 8 located on the left and right sides of the juxtaposed cores 8 and the side members 1 are fastened and fixed via the brackets 21.

Next, each core 8 of the present composite core type radiator
To remove, the pair of upper and lower support members 3 is first removed, the cap nut of the lower pipe joint 12 is loosened, and the bracket 21 of the intermediate plate 26 and the connecting plate 20 are separated. Then, the core 8 is moved downward and the upper pipe joint 12 is removed. Next, by removing the lower pipe joint 12, each core 8 can be independently removed. Next, FIG.
FIG. 4 is a longitudinal sectional view of a main part of a second embodiment of the composite core radiator of the present invention, in which a tapered surface 25 is formed on the inner surface of the opening of the connecting pipe 10 projecting from the outer surface of the header tank 11. , An outer screw is formed on the outer periphery thereof. Then, the packing 14 seated on the tapered surface 25 is fitted onto the connecting pipe 7 of the small tank 6. Then, by raising the core 8 and fastening the cap nut 13 to the lower end of the connecting pipe 10 in the state of FIG. 7, the small tank 6 and the connecting pipe 10 can be liquid-tightly connected. This example
Since the pipe joint 12 is extremely simple, the number of parts is small. The configuration other than the above is the same as that of the first embodiment. In addition, in each embodiment, each core 8 is formed completely symmetrically with respect to the center in the longitudinal direction. Therefore, it is possible to position either side above or below without distinction between upper and lower sides.

[0015]

The composite core type radiator of the present invention has the support member 3 for supporting the upper and lower parts of the plurality of cores via the cushioning pads 9, respectively, and each of the small tank 6 and the header tank 11 thereof.
Since it has a structure in which and are detachably attached and are slightly movable in the axial direction by the pipe joint 12, the earthquake resistance is high. At the same time, since each support member 3 is provided with the U-shaped notch 2, the cores can be easily attached and detached, and the assemblability and the maintainability are good.

[Brief description of drawings]

FIG. 1 shows an essential part of a composite core type radiator of the present invention,
The attachment explanatory view of the support material 3.

FIG. 2 is an explanatory view showing a mounting state of the support material 3.

FIG. 3 is a longitudinal cross-sectional view of the essential parts of the core and the pipe joint 12 of the present invention.

FIG. 4 is an overall front view of a composite core type radiator of the present invention.

FIG. 5 is a plan view of the same.

FIG. 6 is an enlarged view of the relevant part.

FIG. 7 is a longitudinal cross-sectional view of a main part of a second embodiment of the composite core radiator of the present invention.

[Explanation of symbols]

 1 Side Material 2 U-Shaped Notch 3 Support Material 4 Tube 5 Fin 6 Small Tank 7 Connection Pipe 8 Core 9 Buffer Pad 10 Connection Pipe 11 Header Tank 12 Pipe Joint 13 Cap Nut 14 Packing 15 Bolt 16 Nut 17 Water Supply Cap 18 Inlet pipe 19 Outlet pipe 20 Connecting plate 21 Bracket 23 Joint body 24 Bolt hole 25 Tapered surface 26 Intermediate plate

Claims (1)

[Claims] 1. A pair of side members 1, 1 spaced apart from each other and standing upright on both sides, and a pair of side members 1 which are located near upper and lower end portions of the pair of side members 1, 1 and are parallel to each other. , 1 having both ends removably fixed, and a plurality of U-shaped notches 2 provided at predetermined intervals spaced apart in the longitudinal direction, and a plurality of tubes arranged in parallel, respectively. A large number of fins 5 are arranged on the outer surface of 4, and both ends of each tube 4 communicate with a pair of upper and lower small tanks 6, 6, and an upper surface of the upper small tank 6 and a lower surface of the lower small tank 6 A short connecting pipe 7 is provided on each of the plurality of cores 8, and side surfaces of the connecting pipe 7 are relatively laterally detachably fitted to the U-shaped notch 2 of the support member 3. And the upper and lower small tanks 6 and 6 of the core 8 and the support members 3 and 3, respectively. A cushioning pad 9 made of an elastic material, which is in contact with and interposed between the cushioning pad 9 and the supporting members 3 and 3, and both longitudinal ends thereof are supported by the upper and lower ends of the side members 1 and 1, respectively. A pair of upper and lower header tanks 11 and 11 in which a plurality of short connecting pipes 10 are projectingly provided at the predetermined intervals on the outer surface of the material 3 side.
And the openings of the connecting pipes 7 of the upper and lower small tanks 6 and 6 of the respective cores 8 and the openings of the connecting pipe 10 of the header tanks 11 and 11 are detachable and slightly in the axial direction. A plurality of pipe joints 12 that are connected to each other so as to be movable relative to each other, and a composite core radiator.