JPH07208844A - Cooling fan - Google Patents

Abstract

PURPOSE:To cool a wide range of an object to be cooled by diffusing a direction of cooling wind by one cooling fan in a space conservation without installing a separately mounting louver and an air chamber. CONSTITUTION:A cooling fan 1 has a rotatable axial fan 5 provided in a fan frame 3, and comprises a wind direction altering unit 7 integrated at an air flow-out side of the frame 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling fan capable of changing the direction of cooling air.

[0002]

2. Description of the Related Art A conventional cooling fan 101 has, for example, a rectangular fan frame 103 as shown in FIG.
A rotatable axial fan 105 is provided therein. The fan frame 103 has mounting holes 10 formed at the four corners.
It is used by attaching a screw to a fixed frame (not shown).

With the above structure, when the axial fan 105 is rotated, the cooling air is sucked from the air flow-in side and flows to the air flow-out side to cool the object to be cooled on the air flow-out side.

[0004]

By the way, in the conventional cooling fan described above, since the direction of the cooling air is fixed in a fixed direction, the cooling air only hits the local part of the object to be cooled and the object is cooled. It was necessary to install multiple cooling fans in order to apply it to the whole.

Further, in order to diffuse the cooling air over a wide range, it was necessary to separately install a louver and an air chamber in the empty space.

An object of the present invention is to enable a single cooling fan to save the space and diffuse the direction of the cooling wind without separately installing a louver or an air chamber, so that a wide range of an object to be cooled can be cooled. The purpose is to provide a cooling fan.

[0007]

In order to achieve the above object, the cooling fan of the present invention is a cooling fan in which a fan frame is provided with a rotatable axial fan, and the wind direction is changed to the air flow out side of the fan frame. It is characterized in that the device is integrated.

In the cooling fan, the wind direction changing device is composed of a plurality of variable louvers connected at appropriate intervals and a driving means connected to one of the variable louvers via a connecting member. That is, the frame of the wind direction changing device is attached to the fan frame, a plurality of variable louvers is provided in the frame, and a drive box housing the drive means is provided at one side of the frame, and the drive means is It is preferable that the louver rotor is connected to the connecting member, and the drive motor is connected to the louver rotor through a reduction gear, and that the reduction gear is a pair of bevel gears. Is.

[0009]

[Operation] By using the cooling fan as described above, it is possible to install a louver and an air chamber separately installed,
One cooling fan can save space and diffuse the direction of the cooling air, and can cool a wide range of the object to be cooled.

[0010]

Embodiments of the present invention will be described in detail below with reference to the drawings.

Referring to FIG. 1, the cooling fan 1 includes a rectangular fan frame 3, for example, and a rotatable axial fan 5 is provided in the fan frame 3.

With the above structure, when the axial fan 5 is rotated, cooling air is sucked from the air flow-in side and flows to the air flow-out side to cool the object to be cooled on the air flow-out side.

A wind direction changing device 7 is integrated on the air flow out side of the fan frame 3. That is, the rectangular frame 9 which is a part of the wind direction changing device 7 is attached to a fixed frame (not shown) with bolts or the like by using the attachment holes 11 formed at the four corners of the fan frame 3 in common.

A plurality of variable louvers 13 are provided in the frame 9 at appropriate intervals. A drive box 15 is attached to the left side of the frame 9, for example.

Therefore, by integrating the frame 9 of the wind direction changing device 7 with the fan frame 3 and mounting the drive box 15 on the left side of the frame 9,
It can be manufactured compactly without installing a louver or air chamber that is attached separately, thus saving space.

As shown in FIG. 2, in the opening 9A of the frame 9, a plurality of variable louvers 13A, 13B and 13C are provided at appropriate intervals. The left end of each variable louver 13A, 13B, 13C is integrated with a connecting rod 17 extending in the vertical direction. The variable louver 1
The upper end of the connecting rod 19 is preferably integrated as a connecting member on the left side of 3C, and the lower end of the connecting rod 19 is a louver rotor 23 which is a part of a driving means 21 provided in the drive box 15. Is attached to the shaft 25 of the.

As shown in FIG. 2, the louver rotor 23 is preferably provided with a bevel gear 27 as a speed reducer, and the bevel gear 27 is provided with another bevel gear 29.
Are meshed. This bevel gear 29 has a drive motor 3
One output shaft 33 is connected.

With the above structure, when the axial fan 3 is rotated to generate the cooling air and the drive motor 31 is driven at the same time, the louver rotor 23 is rotated via the output shaft 33 and the bevel gears 29 and 27. This louver rotor 2
3, the variable louvers 13A, 13B and 13C are reciprocated through the shaft 25 and the connecting rods 19 and 17 with the center of rotation C as a fulcrum as shown in FIG. As a result, the wind direction of the cooling air can be diffused as shown in FIG.

Therefore, the object to be cooled on the air flow out side can be cooled in a wide range with one cooling fan. The reduction gear is a pair of bevel gears 27,
By setting 29, the drive means 21 can be compactly housed in the drive box 15.

The present invention is not limited to the above-mentioned embodiments, but can be implemented in other modes by making appropriate changes. The speed reducer is not a pair of bevel gears, but a pair of spur gears, sprockets,
It may be made by Chien.

[0021]

As will be understood from the above description of the embodiments, according to the present invention, by integrating the airflow direction changing device with the fan frame of the cooling fan, the cooling airflow of one cooling fan can be improved. The wind direction can be changed to spread. Therefore, the object to be cooled can be cooled in a wide range. Moreover, space is saved because there is no separately installed louver or air chamber. Further, since the drive box is provided on one side of the frame and the drive means is housed in the drive box, it can be made compact.

[Brief description of drawings]

FIG. 1 is a perspective view showing a cooling fan of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a side view of FIG.

FIG. 4 is a perspective view showing a conventional cooling fan.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooling fan 3 Fan frame 5 Axial fan 7 Wind direction changing device 9 Frame 11 Mounting holes 13, 13A to 13C Variable louver 15 Drive box 17 Connecting rod 19 Connecting rod (connecting member) 21 Driving means 23 Louver rotor 27, 29 Bevel gear (decelerator) 31 Drive motor

Claims (5)

[Claims] 1. A cooling fan comprising a fan frame provided with a rotatable axial fan, wherein a wind direction changing device is integrated on the air flow out side of the fan frame. 2. The wind direction changing device is composed of a plurality of variable louvers connected at appropriate intervals, and a drive means connected to one of the variable louvers via a connecting member. The cooling fan according to claim 1. 3. A frame of a wind direction changing device is attached to the fan frame, a plurality of variable louvers are provided in the frame, and a drive box containing a drive means is provided on one side of the frame. The cooling fan according to claim 1. 4. The louver rotor connected to the connecting member, and the drive motor connected to the louver rotor via a speed reducer. Cooling fan described. 5. The cooling fan according to claim 4, wherein the speed reducer is a pair of bevel gears.