JPS5939673B2 - radiator cooling system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a radiator cooling device that improves the heat dissipation performance of a radiator, particularly a radiator that is composed of a large number of plate-shaped radiators used as a heat radiator of a transformer.

Conventionally, cooling of plate-shaped radiators of transformers, for example,
As shown in FIGS. 1 and 2, a large number of plate-shaped radiators 1 are attached to a header 2 to form a flyer 3, and a radiator group consisting of several rows of radiators 3 is connected to a fan 4. This is done with good ventilation.

Generally, the wind coming out of a fan has an axial velocity component and a swirling velocity component, so in the structure shown in FIGS. The wind is rectified, causing the deflection of the wind field to expand.

For example, the rotation direction of fan 40 is arrow 5 when viewed from the fan side.
When the wind direction is as shown by arrow 6, the wind area at the radiator group exit is blank as shown by the diagonal line 7, and the horizontal width matches the diameter of the fan, indicating a strong wind area. exist at symmetrical positions at the upper right and lower left when viewed from the fan side with respect to the central axis of the fan.

This kind of deflection expansion of the wind field has not been well understood in the past, so when cooling is performed by arranging a plurality of fans on the same side, the mutual positional relationship becomes a problem.

In Figures 3 and 4, two 7-tens 4a and 4b are arranged vertically on the same side of the radiator to perform cooling, and the rest is the same as in Figures 1 and 2. It is a structure.

In such a structure, one for example each fan 4a,
When the rotation direction of the fan 4b is counterclockwise as shown by arrows 5a and 5b when viewed from the fan side, the airflow area of the two fans at the radiator group outlet is as follows:
The lower fan 4b becomes as shown by the diagonal line 7b on the lower right.

This results in the overlap of the fan air area 1), and depending on the arrangement of a plurality of fans, the overlapping area of the air area increases, reducing both the cooling area and the amount of cooling air, resulting in a decrease in cooling efficiency.

In view of the above points, the present invention is based on the phenomenon of deflection expansion of the fan wind area, and when cooling is performed by arranging a plurality of fans on the same side of a radiator group, each fan is arranged so that the airflow areas do not overlap. The cooling efficiency is increased by placing the

An embodiment of the radiator cooling device of the present invention will be described below with reference to FIGS. 5 and 6. FIG.

Figures 5 and 6 are examples in which two fans 4a and 4b are arranged on the same side of the radiator, and the rotation direction of the fans is counterclockwise as shown by arrows 5a and 5b when viewed from the fan side. .

The upper fan 4a is disposed on the left side of the lower fan 4b by an appropriate distance when viewed from the fan side.

When arranged in this way, the wind area of the upper fan 4a becomes as shown by the diagonal line 7a on the upper right, and the air area of the lower fan 4b becomes as shown by the downward diagonal line 7b on the right, so that the wind area of the fans is similar to each other. There is no weight 1).

In FIGS. 5 and 6, when the rotation direction of the fans 4a and 4b is clockwise when viewed from the fan side, the airflow area of each fan is at the upper left and lower right when viewed from the fan side with respect to the fan center axis. Since they are located in point-symmetrical positions, the upper fan is placed an appropriate distance to the right of the lower fan when viewed from the fan side.

Furthermore, in the examples shown in FIGS. 5 and 6, the arrangement of two fans has been described, but the same fan arrangement can be applied to the case of a larger number of fans.

As described above, according to the radiator cooling device of the present invention,
Even when a plurality of fans are arranged on the same side of the radiator, it is possible to prevent the airflow areas of the fans from overlapping with each other, thereby increasing both the cooling area and the amount of cooling air, thereby improving the cooling efficiency.

[Brief explanation of drawings]

Fig. 1 is a schematic side view illustrating one example of a conventional radiator cooling device, Fig. 2 is a view taken along the line ■-■ in Fig. 1, and Fig. 3 is another example of a conventional radiator cooling device. FIG. 4 is a schematic side view illustrating an example of the radiator cooling device of the present invention, FIG. 4 is a view taken along the line IV-IV in FIG. It is a VI-VI line arrow view of a figure. 3...Radiator, 4.4a, 4b...Fan,
5°5a, 5b...arrows indicating the direction of fan rotation; 7°7a, 7b...diagonal lines indicating the fan wind area.

Claims (1)

[Claims] 1. In a radiator cooling system in which a plurality of fans are arranged on the same side of a radiator composed of a large number of plate-shaped radiators, the mutual positions of the fans arranged vertically adjacent to each other on the same side are This radiator cooling device is characterized in that the upper fan is located to the right of the lower fan when the fan rotates to the right when viewed from the fan side, and to the left when the fan rotates to the left.