JPH06147788A - Cooling device of radiator - Google Patents

Abstract

PURPOSE:To make air pass efficiently, to suppress an adverse effect on the quantity of air and noise and to attain improvement in a cooling performance by a radiator and suppression of noise on the occasion of passing of air. CONSTITUTION:This device is equipped with a radiator 1, a shroud 2 and a blower fan 3. The radiator 1 is equipped with an upper water tank 10 and a lower water tank 11 communicating with a water jacket of an internal combustion engine and with a radiating core part 13. Cuts 4 and 5 are formed in the opposed side parts 10a and 10b of the upper water tank 10 and the lower water tank 11 of the radiator 1. A space H2 between the side 4c of the cut 4 and the side 5c of the cut 5 is so set as to correspond to the outside diameter of the blower fan 3. A part 13i of the radiating core part 13 is disposed in the cut 4, while a part 13k of the radiating core part 13 is disposed in the cut 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiator cooling device for cooling cooling water of an internal combustion engine of a vehicle.

[0002]

2. Description of the Related Art As a radiator cooling device, FIGS.
As shown in, the upper water tank 101 and the lower water tank 10
2, a radiator 100 including a heat dissipation core portion 103,
It is known that the shroud 200 extends rearward from the radiator 100 to form an air passage 201, and a screw-type blower fan 300 arranged in the air passage 201 of the shroud 200.

In this device, when used, the wind generated by driving the blower fan 300 passes through the heat dissipation core portion 103 in the direction of the arrow A1, thereby promoting heat dissipation from the heat dissipation core portion 103, and the radiator 100. Water is cooled. Here, the outer diameter of the blower fan 300 is indicated by D1,
Lower side portion 101a of upper water tank 101 and lower water tank 1
02, the upper side portion 102a, that is, the heat dissipation core portion 1
The height of 03 is indicated by H1, and H1 is smaller than D1 (H1 <D1).

In the above apparatus, as shown in FIG. 4, the lower side portion 101a of the upper water tank 101 and the upper side portion 102a of the lower water tank 102 are imaginary lines P on the outer periphery of the blower fan 300.
Blocking 1. That is, the lower side portion 1 of the upper water tank 101
01a and the upper side portion 102a of the lower water tank 102 partially overlap with the outer peripheral portion of the blower fan 300. Therefore, as shown in FIG. 5, stagnation or vortex is likely to occur in the wind flow at the portion 105. That is, the wind that has passed through the heat dissipation core portion 103 does not necessarily escape straightly and efficiently, and a non-uniform flow occurs, which adversely affects the air volume and noise.

In Japanese Utility Model Publication No. 2-34794,
In order to suppress the noise level, there is disclosed a cooling fan device in which the outer peripheral part of the blade part of the blower fan is obliquely cut and the cylindrical part of the shroud is made to correspond thereto.

[0006]

SUMMARY OF THE INVENTION The present invention improves the shape of the upper water tank and the lower water tank of the radiator to allow the wind to pass efficiently and suppress the adverse effects on the air volume and noise, and to cool the radiator. It is an object of the present invention to provide a radiator cooling device capable of improving performance and suppressing noise when passing wind.

[0007]

A radiator cooling device according to the present invention comprises an upper water tank, a lower water tank, a tube group disposed between both tanks and communicating with both tanks, and a radiation fin group held by the tube groups. A radiator provided with a heat dissipation core part having a shroud extending from the radiator to form a ventilation path, and a screw-type blower fan that is arranged in the ventilation path of the shroud and generates wind that passes through the radiator fin groups of the radiator. The upper water tank and the lower water tank of the radiator have notches corresponding to the outer diameter of the blower fan on the sides facing each other, and a part of the heat dissipation core portion is arranged in the notch. To do.

[0008]

The wind generated by driving the blower fan passes through the heat dissipation core. As a result, heat dissipation from the heat dissipation fin group of the heat dissipation core portion is promoted, and the water in the radiator is cooled.
A notch corresponding to the outer diameter of the blower fan is formed in side portions of the upper water tank and the lower water tank of the radiator facing each other, and a part of the heat dissipation core portion is arranged in the notch. Due to the notch, overlapping of each water tank and the outer peripheral portion of the blower fan is avoided.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the device of the present invention will be described below with reference to FIGS. This example is applied to a cooling mechanism of an internal combustion engine of an automobile. The radiator 1 cools the cooling water in the water jacket of the internal combustion engine by a heat exchange action. The radiator 1 includes a horizontally elongated upper water tank 10 and a lower water tank 11 that communicate with a water jacket of an internal combustion engine, and a heat dissipation core portion 13 arranged between the tanks 10 and 11. The heat dissipation core portion 13 includes a tube group 131 including a plurality of tubes 130 extending in the vertical direction and communicating with both tanks 10 and 11, and each tube 1
The heat radiation fin group 133 including a large number of corrugated plate-shaped heat radiation fins 132 that secures the heat radiation area held by 30 is provided. The material of both tanks 10 and 11 is iron,
It is pressed.

The shroud 2 extends from the radiator 1 toward the rear in a tubular shape, and forms a ventilation path 20. The blower fan 3 is of a screw type, is composed of a central boss portion 30 and a plurality of blade portions 31, and is arranged in the air passage 20 of the shroud 2. Reference numeral 2h is a fixture for holding the shroud 2 on the radiator 1.

In the present embodiment, as shown in FIG. 1, of the upper water tank 10 and the lower water tank 11 of the radiator 1, in the central regions of the side portions 10a, 11a facing each other,
Notches 4 and 5 are formed respectively. Notch 4 is side 4a
Partitioned by ~ 4c. Similarly, the other notch 5 also has a side 5a.
Partitioned by ~ 5c. The distance H2 between the side 4c of the cutout 4 and the side 5c of the cutout 5 is set so as to correspond to the outer diameter D2 of the blower fan 3. Specifically, H2 is equal to the outer diameter D2 of the blower fan 3 (H2 = D2), or H2
2 is set slightly larger than the outer diameter D2 (H2
> D2). As can be understood from FIG. 2, a part 13i of the heat dissipation core part 13 is arranged in the notch 4, and a part 13k of the heat dissipation core part 13 is arranged in the notch 5.

In the present embodiment, in use, the blower fan 3 is rotationally driven in accordance with the driving of the internal combustion engine, and the wind generated by the blower fan 3 moves the heat radiation core portion 13 in the arrow A2 direction (see FIG. 2). Through which the heat is dissipated from the heat dissipating core portion 13, and the water in the radiator 1 is cooled. In addition,
The cooled water returns into the water jacket of the internal combustion engine through a water passage (not shown).

As described above, in this embodiment, of the upper water tank 10 and the lower water tank 11 of the radiator 1,
The blower fan 3 is provided on the side portions 10a and 11a facing each other.
Cutouts 4 and 5 corresponding to the outer diameter of the
A part 13i of 3 is arranged in the cutout 4, and a part 13k of the heat dissipation core part 13 is arranged in the cutout 5. Therefore,
As can be understood from the above, overlapping between the water tanks 10 and 11 and the outer peripheral portion of the blade portion 31 of the blower fan 3 is avoided. Therefore, in this embodiment, the wind passes straight efficiently, the air volume is secured, and the cooling performance of the radiator 1 is improved. Furthermore, stagnation and vortex of the flow of wind passing through the heat dissipation core portion 13 can be suppressed, which is also advantageous in suppressing noise.

The device of the present invention is not limited to the embodiment described above and shown in the drawings. For example, the notch may be formed in a circular arc in FIG. Can be carried out.

[0015]

According to the apparatus of the present invention, the notches formed in the water tanks prevent the water tanks and the blower fan from overlapping each other. Therefore, the wind efficiently passes straight, the air volume is secured, and the cooling performance by the radiator is improved. Further, since the vortex of the flow of the wind passing through the heat dissipation core portion can be suppressed, it is also advantageous in suppressing noise.

[Brief description of drawings]

FIG. 1 is a rear view of an apparatus according to an embodiment.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a partial perspective view of a heat dissipation core portion.

FIG. 4 is a rear view of an apparatus according to a conventional example.

5 is a sectional view taken along line VV of FIG.

[Explanation of symbols]

In the figure, 1 is a radiator, 10 is an upper water tank, 11 is a lower water tank, 13 is a heat dissipation core part, 131 is a tube group,
133 is a radiating fin group, 2 is a shroud, 20 is an air passage, 3 is a blower fan, and 4 and 5 are notches.

Claims (1)

[Claims] 1. A radiator comprising an upper water tank and a lower water tank, and a heat radiation core portion having a group of tubes arranged between both tanks and communicating with both tanks and a group of heat radiation fins held by the tube groups. A shroud extending from the radiator to form an air passage, and a screw-type blower fan arranged in the air passage of the shroud to generate air passing through the radiator fins of the radiator, and the upper water of the radiator. The radiator cooling device is characterized in that the tank and the lower water tank have notches corresponding to the outer diameter of the blower fan at side portions facing each other, and a part of the heat dissipation core portion is arranged at the notches.