JP3205825B2 - Composite core radiator - Google Patents

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 used for a large construction vehicle or the like are arranged in parallel, and which has improved seismic resistance, assemblability, and maintainability.

[0002]

2. Description of the Related Art A large vehicle for construction or civil engineering such as a tractor or a crane vehicle is provided with a large engine cooling radiator. As such a radiator for cooling an engine, there is known a radiator in which a plurality of heat exchanger cores are arranged in parallel, and cooling water is supplied to each heat exchanger core via upper and lower headers. Such a composite core radiator is:
When one of the cores has a failure such as a water leak, there is an excellent maintenance characteristic that only the core needs to be replaced or repaired.

[0003]

However, such a composite core type radiator has a drawback that since a large number of cores are arranged in parallel, assembly and removal thereof are troublesome. In addition, since each core is independent, there is a disadvantage that the supporting structure must be complicated. Therefore, the present invention adopts 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 and 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 separated from each other and erected on both sides. Further, the pair of support members 3, 3 are located near the upper and lower ends of the side members 1, 1 respectively, and the support members 3, 3 are disposed at both ends of both side members 1, 1 in parallel with each other.
3 is detachably fixed. The support members 3 and 3 are spaced apart in the longitudinal direction and a plurality of U
A letter-shaped notch 2 is provided. Further, a plurality of cores 8
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 each tube 4 communicate with a pair of small tanks 6 and 6 at the top and bottom. At the same time, short connecting pipes 7 project from the upper surface of the upper small tank 6 and the lower surface of the lower small tank 6, respectively. The side of this connecting pipe 7
It is relatively detachably fitted to the U-shaped cutout 2 of the support members 3 from the side.

The buffer pads 9 are made of an elastic material interposed between the upper and lower small tanks 6 and 6 of the respective cores 8 and the support members 3 and 3. The header tanks 11, 11 are opposed to the support members 3, 3 and both ends in the longitudinal direction are supported by upper and lower ends of the side members 1, 1, and a plurality of short connecting pipes 10 are provided on the opposing surfaces at the predetermined interval. It is protruded at. Further, the pipe joint 12 is provided with openings of the connecting pipes 7 of the upper and lower small tanks 6 and 6 of each core 8 and header tanks 11 and 11.
The connecting pipe 10 is detachably connected to the opening of the connecting pipe 10 so as to be relatively movable relatively in the axial direction.

[0006]

In the composite core type radiator of the present invention, the upper and lower ends of each core 8 are supported by a pair of upper and lower support members 3 and 3 via buffer pads 9. Therefore, each core 8 can move slightly elastically in the axial direction in response to an impact. Moreover, since each core 8 and the header tank 11 are connected by a pipe joint 12 so as to be detachable and slightly movable relative to each other in the axial direction, an external force can be applied between the header tank 11 and the pipe joint 12. Alternatively, there is no possibility that a crack is generated between the pipe joint 12 and the small tank 6. Further, since the support member 3 has the U-shaped cutout portion 2 to which the side of the connecting pipe 7 is detachably fitted, it is extremely easy to assemble each core 8 and to support the core 8 with the support member 3. Thus, a composite core radiator having good assemblability can be obtained.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory perspective view of a main part of the present composite core radiator, showing an example of an assembling order thereof. FIG. 2 is a perspective view of a main part showing the assembled state.
FIG. 3 is a longitudinal sectional view on the axis in FIG. 2, showing a state in which the upper cap nut 13 is loosened. FIG. 4 is a front view showing the entire composite core radiator, and FIG.
6 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, 1 are erected on both sides of the composite core type radiator, and header tanks 11, 11 are provided on both upper and lower ends thereof via brackets 21 at both ends in the longitudinal direction. Supported. In addition, upper and lower header tanks
A pair of support members 3 and 3 are disposed in parallel with a space 11 slightly longer than the pipe joint 12 at 11, and both ends in the longitudinal direction are detachably fixed to the side member 1. A core 8 is supported between a pair of upper and lower support members 3 via a buffer 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.

Further, a plurality of intermediate plates 26 are arranged at the center of the core 8. This intermediate plate 26 has a core 8
The fin 5 is significantly thicker than the plate-type fin 5 and has a large number of tube insertion holes (not shown) similar to the fin 5, and the tube 4 is penetrated therethrough. . And this intermediate plate
The central portion of the outermost core 8 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 a connection plate 20. Next, the water supply cap 17 is detachably attached to the upper surface of the header tank 11, and the inlet pipe is provided on the side surface.
18 are protruding. One end of a hose (not shown) is connected to the inlet pipe 18, and the other end is connected to a water jacket of the engine. An outlet pipe 19 is also provided on the side of the lower header tank 11, and one end of a hose (not shown) is connected thereto, and the other end of the hose is connected to a 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 the figure, a large number of flat tubes 4 are inserted into unillustrated tube insertion holes of a large number of fins 5 arranged in parallel with small gaps, and 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, and communicates the opening with the inside of the small tank 6. The header tank 11 is formed in an elongated rectangular cross section with both ends closed, and one end of the connection pipe 10 is fixed to the lower surface side thereof by brazing or the like in FIG. The inside of 11 communicates. Header tank 11
Are fixed detachably from the bolt 15 via the bracket 21.

Next, as shown in FIGS. 1 and 2, the support member 3 is made of a plate member having an L-shaped cross section, and mounting flanges are integrally provided at both ends thereof, and a bolt hole 24 is formed therein. Have been. Further, a U-shaped cutout 2 is provided on one side of the plane of the support member 3, and a plurality of the cutouts 2 are formed at regular intervals in the longitudinal direction. The pitch between the U-shaped cutouts 2 is formed slightly larger than the width of the core 8. The inner width of the U-shaped notch 2 itself is the connecting pipe 7.
And slightly smaller than the diameter of the cap nut 13 and the buffer pad 9 described later.

As shown in FIG. 3, the pipe joint 12 has a tubular joint body 23, a pair of cap nuts 13 screwed to upper and lower ends thereof, and upper and lower ends of the joint body 23. A packing 14 having a trapezoidal outer periphery in cross section seated on the flared tapered surface 25 has a hole in the center. The joint body 23 is disposed 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, whereby the header tank
A liquid-tight communication can be established between the small tanks 11 and the respective small tanks 6. The packing 14 is made of an elastic material such as rubber, and the joint body 23 is slightly movable relative to the small tank 6 and the connecting pipe 10 in the axial direction. Next, buffer pad 9
Is made of an elastic material such as rubber, and has a thickness slightly larger than the gap between the outer surface of the support member 3 and the outer surface of the small tank 6. As is clear from FIG. 1, the buffer pad 9 has a circular outer periphery and a center hole, and the center hole is inserted from above the connecting pipe 7. Then, with the support member 3 fixed to the side member 1 with the bolt 15, the small tank 6
The small tank 6 is substantially clamped between the pair of upper and lower support members 3 by press-fitting into the opposing surfaces of the support member 3 and the support member 3.

Next, an example of an assembling order of the composite core type radiator will be described. First, a pair of header tanks 11 and 11 are arranged on both 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 bracket 21. Next, a pipe joint 12 is attached between the connecting pipe 7 protruding 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 are connected. The pipe joint 12 is also inserted between the connection pipe 10 of the header tank 11 and the connection pipe 10. The connecting pads 7 of the core 8 are each provided with a buffer pad 9 in advance. Then, the cap nuts 13 of the respective pipe joints 12 are fastened and fixed, and the core 8 is held 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 member 3 is inserted from the side of the core 8, and each U-shaped notch 2 is fitted into the connecting pipe 7 of the core 8. Next, the bolt holes 24 at both ends in the longitudinal direction of the support member 3 are aligned with the bolt holes 24 of the side member 1, the bolt 15 is inserted therethrough, and both ends of the support member 3 are fastened and fixed via the nut 16. At the same time, the intermediate plates 26 located at the center in the longitudinal direction of the respective cores 8 are connected to each other by connecting plates.
Connected and fixed to each other via 20 and fasteners. The side plates 1 and the intermediate plates 26 of the cores 8 located on the left and right sides of the cores 8 are fastened and fixed via the bracket 21.

Next, each core 8 of the composite core type radiator
In order to remove the upper and lower support members 3, the cap nut of the lower pipe joint 12 is loosened, and the bracket 21 and the connecting plate 20 of the intermediate plate 26 are separated. Then, the core 8 is moved downward to remove the upper pipe joint 12. Next, if the lower pipe joint 12 is removed, each core 8 can be removed independently. Next, FIG.
FIG. 5 is a vertical sectional view of a main part of a second embodiment of the composite core radiator of the present invention.In this embodiment, a tapered surface 25 is formed on an inner surface of an opening of a connection pipe 10 protruding from an outer surface of a header tank 11. , An outer thread is formed on the outer periphery thereof. Then, the packing 14 seated on the tapered surface 25 is fitted to the connecting pipe 7 of the small tank 6. By raising the core 8 in the state of FIG. 7 and fastening the cap nut 13 to the lower end of the connection pipe 10, the small tank 6 and the connection pipe 10 can be connected in a liquid-tight manner. This example is
It is composed of an extremely simple pipe joint 12, and the number of parts is small. The other configuration than the above is the same as that of the first embodiment. 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 upward or downward without distinguishing between the upper and lower sides.

[0015]

The composite core type radiator of the present invention has the support members 3 for supporting the upper and lower portions of the plurality of cores via the buffer pads 9, respectively, and has the small tank 6 and the header tank 11 respectively.
Are connected by the pipe joint 12 so as to be detachable and slightly movable in the axial direction, so that the earthquake resistance is high. At the same time, since each support member 3 is provided with the U-shaped notch 2, each core can be easily attached and detached, and the assembling property and the maintenance property are good.

[Brief description of the drawings]

FIG. 1 shows a main part of a composite core radiator of the present invention;
FIG.

FIG. 2 is an explanatory view showing an attached state of the support member 3;

FIG. 3 is a longitudinal sectional view of a main part of the core and the pipe joint 12 of the present invention.

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

FIG. 5 is a plan view of the same.

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

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side material 2 U-shaped notch 3 Support material 4 Tube 5 Fin 6 Small tank 7 Connecting pipe 8 Core 9 Buffer pad 10 Connecting pipe 11 Header tank 12 Fitting 13 Bag 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)

(57) [Claims] 1. A pair of side members 1, 1 erected on both sides separated from each other, and both side members 1 are positioned near both upper and lower ends of the pair of side members 1, 1 so as to be parallel to each other. , 1, a pair of support members 3, 3 provided with a plurality of U-shaped cutouts 2 at predetermined intervals separated from each other in the longitudinal direction, and a plurality of tubes arranged in parallel with each other. A large number of fins 5 are arranged on the outer surface of each of the small tanks 4. Both ends of each tube 4 communicate with a pair of small tanks 6 and 6, and the upper surface of the small tank 6 on the upper side and the lower surface of the small tank 6 on the lower side. Each of the plurality of cores 8 has a short connecting pipe 7 projecting therefrom, and a side face of the connecting pipe 7 is relatively detachably fitted to the U-shaped cutout 2 of the support member 3 from the side. Between 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 interposed therebetween and opposed to the support members 3 and 3, and both ends in the longitudinal direction thereof are supported by upper and lower ends of the side members 1 and 1, respectively. A pair of upper and lower header tanks 11, 11 having a plurality of short connecting pipes 10 protruding from the outer surface on the side of the material 3 at the predetermined interval.
The opening of the connecting pipe 7 of the upper and lower small tanks 6 and 6 of the core 8 and the opening of the connecting pipe 10 of the header tanks 11 and 11 are detachable and slightly axially. And a plurality of pipe joints (12) movably connected to each other.