JPS6218875Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a heat exchanger such as a radiator installed in an automobile engine.

[Conventional technology]

A radiator is installed in the engine room to cool the engine, but conventionally, due to space constraints in the engine room, two radiators, a sub radiator and a main radiator, are sometimes installed.

Conventionally, this type of main radiator has a sub-pipe 6 on the sub-radiator (not shown) side of pipe attachment holes 4 and 5 formed in both walls 2 and 3 of a tank 1, respectively, as shown in FIG. However, main pipes 7 are fitted and brazed into the pipe mounting holes 5 on the other engine (not shown) side, respectively, and the sub pipes 6 are attached to one wall 2 of the tank 1, and the sub pipes 6 are attached to the other wall. 3 has a structure in which a main pipe 7 is provided protrudingly. In the figure, 8 is a seat plate and 9 is a tube.

[Problem that the invention attempts to solve]

However, since the main radiator is provided with the sub pipe 6 and the main pipe 7 in the tank 1, the number of parts is large, and the structure is accordingly complicated. In addition, the sub pipe 6 and the main pipe 7 are connected to corresponding pipe mounting holes 4 and 5, respectively.
The problem was that it required a lot of installation work and was not easy to install because it had to be fitted into the body and brazed. Moreover, since each sub pipe 6 and main pipe 7 are supported and fixed by cantilever support, there is a problem that the rigidity is weak and sufficient strength cannot be obtained.

[Purpose of research]

The present invention was devised in view of the above circumstances, and an object of the present invention is to provide a heat exchanger that has a simple structure, can be easily assembled, and has sufficient strength.

[Means for solving problems]

In order to achieve this purpose, the present invention is a heat exchanger in which a main pipe is attached to the engine side of the pipe mounting holes provided on both walls of the tank, and sub pipes are attached to the sub heat exchanger side. A single coolant guide pipe, which has a notch in the approximate center that allows the coolant to flow into the tank or discharge the coolant in the tank to the outside of the tank, is passed through the pipe mounting hole and fixed. One end of the coolant guide pipe is used as a sub pipe, and the other end is used as a main pipe.

[Effect of invention]

According to this invention, most of the coolant sent from the engine side to the coolant guide pipe flows out from the notch into the upper tank and is cooled, and some of the coolant that has the capacity of the sub-radiator It will be sent to the sub heat exchanger via the small diameter pipe section, and will be heat exchanged in the sub heat exchanger. The coolant that has been heat exchanged in the sub-heat exchanger is guided again to the lower tank of the heat exchanger, and then merges with the coolant that has been heat exchanged by the heat exchanger to form the notch. From there, it is sent to the engine side via a large-diameter pipe section, where it is used to cool the engine.

[Example of idea]

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 2 shows the first embodiment of the present invention. In the figure, 10 is an upper tank, and both walls 11 and 12 have pipe mounting holes of the same diameter with bent pieces protruding inward from the tank. 13 and 14 are provided facing each other.
Coolant guide pipes 15 having substantially the same diameter as the pipe mounting holes 13 and 14 penetrate through the pipe mounting holes 13 and 14 and are fixed thereto by brazing.

The coolant guide pipe 15 is made by integrating a sub-pipe and a main pipe, which were conventionally separate, and is provided with a small-diameter pipe portion 15a on the sub-radiator (not shown) side. The small diameter pipe portion 15a functions as a sub-pipe. Further, the central portion of the coolant guide pipe 15 and the engine side form a large-diameter pipe portion 15b, and a notch 16 is bored at the bottom of the central portion to allow the cooling water to flow into the upper tank 10. ing. A hose (not shown) is attached to the small-diameter pipe section 15a and the large-diameter pipe section 15b, so that the coolant from the engine can be supplied to the main radiator and further to the sub-radiator. In addition, 17 in the figure is the seat plate,
18 is the tube 1 attached to the seat plate 17
It is 8.

Although not shown, a coolant guide pipe having the same structure as the coolant guide pipe 15 is also provided in the lower tank, and the coolant is transferred from the sub radiator to the main radiator through a hose, and further to the main radiator. It is designed to return to the engine side.

Since this embodiment is configured in this way, most of the coolant sent from the engine side to the coolant guide pipe 15 flows out into the upper tank 10 from the notch 16 and flows into the lower tank via the tube 18. At the same time, a part of the coolant corresponding to the capacity of the sub-radiator is sent to the sub-radiator via the small-diameter pipe portion 15a and the hose, and heat is exchanged therewith. The coolant that has undergone heat exchange in the sub-radiator is guided again to the lower tank of the main radiator, and then joins with the coolant that has been heat exchanged by the main radiator and passes through the notch into the large diameter pipe. 15b to the engine side, and is used to cool the engine.

In this way, in this embodiment, the coolant guide pipe 15
The sub-radiator side is made into a small diameter pipe 15a, and the large diameter pipe 15b is made with a notch 1 of a predetermined size.
6, it is possible to supply an appropriate amount of coolant to each of the sub radiator and the main radiator, thereby making it possible to effectively cool the engine. In addition, since the sub pipe and the main pipe are integrated with a single coolant guide pipe 15, the number of parts is reduced compared to the conventional structure as shown in Fig. 1, and the structure is simple and easy to integrate into the tank. became easier. Moreover, since the incorporated coolant guide pipe 15 is supported and fixed by both pipe attachment holes 13 and 14, it has high rigidity and sufficient strength can be obtained.

FIG. 3 shows another embodiment of the present invention, in which a large-diameter pipe portion 19a is provided in the center of the coolant guide pipe 19, and small-diameter pipes 19b, 19c are provided on the sub-radiator side and the engine side, respectively. Further, the large-diameter pipe portion 19a is characterized by having a notch 20 that is slightly larger than that of the first embodiment.

Also, in this embodiment, since an appropriate amount of coolant can be supplied to the sub radiator and the main radiator, the engine can be effectively cooled, and the same effects as in the above embodiment can be achieved. It is possible to play.

It should be noted that each of the above embodiments has been described as applied to a main radiator of an automobile.
It is also possible to apply it to other heat exchangers with pipes protruding from both sides of the tank.

[Effect of idea]

As described above, according to the present invention, the number of parts is reduced, and the structure is simple and can be easily assembled. Moreover, since the incorporated coolant guide pipe is supported and fixed by both pipe attachment holes, it has the advantage of being strong in rigidity and providing sufficient strength.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a main part of a conventional heat exchanger, Fig. 2 is a sectional view of a main part of a first embodiment of a heat exchanger according to the present invention, and Fig. 3 is a sectional view of a main part of a first embodiment of a heat exchanger according to the present invention. It is a sectional view of the main part. 1, 10...tank, 4, 5, 13, 14...
Pipe mounting hole, 6...Sub pipe, 7...Main pipe, 15, 19...Cooling liquid guide pipe,
15a, 19b, 19c...small diameter pipe section, 15
b, 19a...large diameter pipe section.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a heat exchanger in which the main pipe is attached to the engine side of the pipe attachment holes provided on both walls of the tank, and the sub pipes are attached to the sub heat exchanger side. , a single coolant guide pipe having a notch provided approximately in the center thereof through which the coolant flows into the tank or discharges the coolant in the tank to the outside of the tank is passed through and fixed in the pipe mounting hole; A heat exchanger characterized in that one end of the coolant guide pipe is a sub pipe and the other end is a main pipe. (2) The heat exchanger according to claim 1, wherein the sub-pipe side of the coolant guide pipe has a smaller diameter than the main pipe side at the other end. (3) The heat exchanger according to claim 1, wherein the central portion of the coolant guide pipe has a larger diameter than both ends of the coolant guide pipe.