JPH11145663A - Rotating fan for wide-area cooling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotating fan for wide-area cooling which is used for a high packing density and small-sized communication apparatus for a base station. SOLUTION: A cylindrical fan 60 is comprised of a fan which is inclined from the horizontal surface, a cover 13 for covering about 1/4 of an exhaust side of the fan and a trunk air outlet 12 which is partially formed on the cover 13 horizontally in the direction of exhaust. The bottom of the fan is provided with a fixing table 90 which is not a comprising part of the cylindrical fan 60. When the fan operates with a cylindrical column 5 as its base, a part of the exhaust from the fan is collected to the cover and is blown out through the trunk air outlet and the fan itself is rotated counterclockwise around the cylindrical column 5 of the fixing table 90.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wide-range cooling fan, and more particularly, to a wide-range cooling rotatable fan for reducing a temperature rise in a base station communication device.

[0002]

2. Description of the Related Art As a conventional cooling method of an electronic unit, as shown in Japanese Utility Model Application Laid-Open No. 21596/1987, a panel having an inclined angle is installed above an electronic device in which a plurality of packages are mounted horizontally. An air-cooling fan unit that receives heat generated by the package inside the housing of the electronic device and forcibly discharges it from multiple vertically mounted fans from the duct installed in the depth direction at the top inside the housing of the electronic device. is there.

FIG. 7 and FIG. 8 show an air cooling fan unit of the above-mentioned conventional example. FIG. 7 is a perspective view of a conventional example, and FIG.
It is sectional drawing. In the conventional fan unit, a package 28 is housed in an electronic unit 27, a fan bracket 21, a panel 25 is provided thereon, and a duct 23 and a fan 22 are attached. The panel 25 is inclined with respect to the upper surface of the electronic unit 27, and one side thereof substantially overlaps with one side of the electronic unit. The duct 23 and the fan 22 are arranged substantially perpendicular to the upper surface of the electronic unit 27 from the other side facing the overlapped one side to the other side of the electronic unit 27. The duct 23
Are fixed by mounting screws 26, and the fan 22 is fixed by mounting screws 26. The heat generated from the package 28 enters the inlet 29 of the duct 23.

[0004]

In the above-mentioned conventional example,
A fan for forced air cooling must be mounted vertically to attach to the duct, and a panel with an inclined angle is required at the top of the package. Therefore, there is a problem that the device becomes large.

Also, since the heat generated from the package is discharged to the outside of the apparatus only from the upper surface of the fan mounting portion, the generation of heat pool in the upper part of the package in the apparatus in the depth direction (the area not exposed to the wind of the fan) is inevitable. I can't prevent it. In recent years, communication devices have been increasingly demanded for miniaturization by customers, and the mounting area has been limited to a small extent. Therefore, there has been a problem that the temperature rise in the apparatus cannot be suppressed, and the reliability of the apparatus is low.

[0006] In addition, an increase in the failure rate of the fans by mounting a plurality of fans has also been a reason for lowering the reliability of the device.

In addition, the forced cooling unit has a complicated structure such as a panel having an inclined angle, a duct having a wide suction opening, and a plurality of fans installed in the duct for cooling the package, thereby avoiding an increase in cost. Absent. Therefore, there has been a problem that the apparatus cost is high.

Accordingly, an object of the present invention is to provide a small-sized base station communication device mounted at high density.

Another object of the present invention is to provide a highly reliable and high-quality product by cooling the heat generated from a package mounted on a communication device in a wide range, despite the minimum number of fans mounted. And a base station communication device.

Still another object of the present invention is to provide a base station communication device having excellent maintainability such that the number of mounted fans is the minimum, the failure rate of the fan is reduced, and replacement work due to the failure of the fan is reduced. Is to provide.

[0011]

In order to achieve the above object, a wide-range rotatable fan according to the present invention comprises a fan unit having a fan, a motor for driving the fan, and a cylindrical support for supporting the motor. , A wide-range cooling fan including a cylindrical fan that houses the fan unit, and a mounting base that supports the cylindrical fan as a separate component from the cylindrical fan and that is mounted on a communication device or the like. , A hollow cylindrical housing that is inclined and opened with respect to the exhaust direction of the fan, and covers the open surface of the cylindrical housing, and projects a part thereof and blows out substantially at right angles to the exhaust direction of the fan. When the cylindrical fan is operated based on the mounting base, a part of the exhaust from the cylindrical fan is collected in the cover and blows out from the air outlet, so that the mounting base is Rotatable fan extensive cooling, wherein the columnar fan itself is rotated counterclockwise.

[0012] Further, the mounting base is provided on the support portion for slidably supporting the cylindrical support portion of the cylindrical fan, a ring-shaped mounting frame connected around the support portion by a plurality of ribs, and provided on the mounting frame. It is preferable to provide a mounting portion for mounting to a communication device or the like, and to insert a wire for driving the fan into a predetermined portion of the mounting frame.

Further, the mounting frame of the mounting base has a concave groove for rotatably rotating the bottom edge of the cylindrical fan, and the concave groove and the bottom edge of the cylindrical fan are engaged by a bearing. And it is preferably rotatable.

Still further, the support portion includes a plurality of metal conducting portions provided on the entire circumference of a specified position, and a plurality of flanges for sandwiching and fixing the plurality of metal conducting portions. Preferably, the part comprises a plurality of metal brushes arranged on its inner surface between the plurality of flanges of the column and connected to the wire.

In addition, since the metal conductive portion and the metal brush are surely in contact with each other, power can be supplied regardless of the rotation of the cylindrical fan.

Further, it is preferable that the cover covers approximately one fourth of the exhaust surface.

The wide-range cooling rotatable fan of the present invention comprises:
In particular, the fan itself is inclined with respect to the horizontal plane, and has a cover that covers the exhaust surface by about 1/4 on the exhaust surface side of the fan,
A part of the cover is partially opened vertically to the exhaust direction to form an outlet. In addition, the fan base has a mounting base as a separate component from the fan, and when the fan operates based on the mounting base, the exhaust from the fan is partially collected in the cover and blown out from the blower, The fan itself rotates counterclockwise around the column portion of.

As described above, according to the present invention, since the fan itself is inclined with respect to the horizontal direction, when the fan itself rotates, cooling can be performed not only in the vertical direction but also in a wide range not only in the fan mounting position. Become.

Further, by cooling a wide area, it is possible to minimize the number of fans mounted in the device.

[0020]

Next, an embodiment of the present invention will be described.
This will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing the structure of an embodiment of the present invention. The cylindrical fan 60 of the rotatable fan for wide-range cooling of the present invention has a cylindrical housing 16 for accommodating the fan unit.
And the cover 13. The cylindrical housing 16 is hollow and has an upper surface which is inclined and opened with respect to the exhaust direction of the fan. The cover 13 is attached to the upper surface of the cylindrical housing 16.
Further, the cover 13 has a blow-out port 12 that protrudes a part of the cover and opens in a substantially horizontal direction, and blows out exhaust air of the fan.
A fan portion is arranged inside the cylindrical fan 60,
The fan unit includes a fan 10, a motor 11 for driving the fan, and a cylindrical support 15 that supports the motor 11. Also, it should be noted that, as shown in FIG. 1, the upper surface of the cylindrical fan 60 is inclined with respect to the horizontal plane, and the cover 13 is attached to the upper surface.

FIG. 2 is a perspective view showing a mounting base according to the embodiment of the present invention. The mounting base 90 is mounted on the bottom surface of the above-described cylindrical fan 60 as a separate component from the cylindrical fan 60. The mounting base 90 is provided with the cylindrical fan 6 described above.
And a support portion 5 supporting the cylindrical support portion 15 of
A substantially circular ring-shaped mounting frame 9 connected to the mounting frame 9 by a plurality of ribs 6, a plurality of mounting portions 7 provided on the mounting frame 9 for mounting to a communication device or the like, and inserted into a predetermined portion of the mounting frame 9. Wire 4 and connector 3 connected to wire 4
And The mounting frame 9 is connected to the support portion 5 by at least three ribs 6 and has at least three mounting portions 7 that can be fastened to the outer edge of the cylindrical fan 60.

FIG. 3 is a sectional view of an embodiment of the present invention.
As shown in this figure, the edge of the bottom surface of the cylindrical fan 60 is
The bearing 8 is slidable by a bearing 8 built in a concave groove provided in the mounting frame 9 of the mounting base 90. Also,
As described above, the upper surface of the cylindrical fan 60 has an inclination angle with respect to the bottom surface, and the upper exhaust surface side of the fan having this inclination angle covers about 1/4 of the exhaust surface side, and a part thereof. Has made it possible to blow out the air discharged from the fan so that the fan 10 rotates about the central axis.
A cover 13 having an air outlet 12 opened in the horizontal direction is arranged. The rotation of the fan 10 is controlled by the motor 1
1, wire 4 and connector 3.

FIG. 4 is an enlarged view of a portion indicated by a dotted line in FIG. In the embodiment of the present invention, the support portion 5 includes a plurality of metal conducting portions 1 provided alternately around the entire periphery only in a specific portion.
And a plurality of flanges 2 arranged substantially parallel to the mounting frame 9 so as to support the metal conducting portion 1 therebetween. In addition, a plurality of metal brushes 14 connected to the wire 4 extending between the plurality of flanges 2 of the support portion 5 are provided inside the cylindrical support portion 15, and serve to supply power to the motor 11. The metal brush 14 is preferably provided at a position corresponding to the metal conductive portion 1 of the support 5.

As described above, the wide-range cooling rotatable fan of the present invention can incorporate the wire 4 from the power supply connector 3 so that the wire 4 and the metal conducting portion 1 are connected. And a support frame 5 disposed substantially at the center of the columnar fan 60, and a mounting frame 9 which is concentric with the support column 5 and whose outer shape is considerably larger than the support column 5 and is opened.

Next, the operation of the embodiment of the present invention will be described in detail with reference to FIGS. When the columnar fan 60 shown in FIG. 1 operates, a part of the exhaust flow from the columnar fan 60 is collected by the cover 13 and blows out from the outlet 12, so that the columnar fan 60 It rotates counterclockwise about the part 5 as a central axis. Further, as shown in FIG. 3, since the bearing 8 is sandwiched between the mounting frame 9 and the cylindrical fan 60, the cylindrical fan 60 can be rotated even if the amount of air blown out from the outlet 12 is small. The power supply to the columnar fan 60 is supplied from the connector 3 to the metal conductive portion 1 of the support portion 5 of the mounting base 90 shown in FIG.
From the metal conducting part 1 to the cylindrical support part 1 of the cylindrical fan 60
5 is supplied to the metal brush 14 provided in
Even when the cylindrical fan 60 rotates, power can be supplied to the motor 11 of the cylindrical fan 60 without the wires 4 and the like being entangled.

FIG. 5 is a perspective view showing a communication device on which the wide-range cooling rotatable fan of the present invention is mounted. This communication device is a box-shaped communication device 18 in which packages 19 are mounted in parallel in a horizontal direction, and a power supply for power supply capable of mounting the wide-range cooling rotatable fan 17 of the present invention on the bottom of the package 19. It has a connector and a fan mounting portion 20 having an air inlet on the bottom surface of the package 19. As described above, the wide-range cooling rotatable fan 17 of the present invention includes:
A wide range can be cooled by the fact that the fan itself is inclined with respect to the horizontal plane, and the cylindrical fan 16 itself rotates. Further, the package 19 mounted on the communication device 18 can be efficiently cooled with a small number of fans.

FIG. 6 is an enlarged perspective view of an embodiment of the wide-range cooling rotatable fan according to the present invention.

This wide-range cooling rotatable fan 17 comprises:
Rotate freely to create a flow of air in the direction shown by the arrow in the figure. That is, air flows from the bottom toward the top, cooling the communication device over a wide area.

[0030]

As described above, since the wide-range cooling rotatable fan of the present invention can cool a wide range, the number of mounted devices can be reduced and the weight of communication equipment can be reduced. Further, by mounting the fan itself horizontally, the communication device can be downsized. Therefore, the device is small,
This has the effect of being lighter.

The wide-range cooling rotatable fan of the present invention is not only inclined with respect to the horizontal plane but also can be cooled over a wide area by rotating about the center of the mounting base. It is possible to prevent the occurrence of heat accumulation in the package in the communication device. In addition, since the number of fans to be mounted is minimized, the failure probability of the fans is lower than that of a plurality of mounted fans, so that the quality of the device is improved. Therefore, there is an effect that the reliability of the device is high.

Further, since the wide-range cooling rotatable fan of the present invention can cool the communication equipment with the minimum number of mountings, the communication equipment can be provided at low cost because the number of mounted fans is small. Further, since the failure rate is low, maintenance of the apparatus can be minimized. Therefore, there is an effect that the apparatus cost can be suppressed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of an embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration of a mounting base according to the embodiment of the present invention.

FIG. 3 is a sectional view showing the internal structure of the embodiment of the present invention.

FIG. 4 is an enlarged sectional view enlarging a portion A in FIG. 3;

FIG. 5 is a perspective view showing a case where an embodiment of the present invention is mounted.

FIG. 6 is an enlarged perspective view of FIG.

FIG. 7 is a partial perspective view showing a conventional example.

FIG. 8 is a sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal conduction part 2 Flange 3 Connector 4 Wire rod 5 Prop part 6 Rib 7 Attachment part 8 Bearing 9 Attachment frame 10 Fan 11 Motor 12 Outlet 13 Cover 14 Metal brush 15 Cylindrical support part 16 Cylindrical case 17 Rotatable Fan 18 Communication equipment 19 Package 20 Fan mounting part 21 Fan bracket 22 Fan 23 Duct 24 Mounting screw 25 Panel 26 Mounting screw 27 Electronic unit 28 Package 29 Suction port 60 Cylindrical fan 90 Mounting base

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] December 11, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

[0011]

In order to achieve the above object, a wide-range cooling rotatable fan according to the present invention comprises a fan, a motor for driving the fan, and a cylindrical support for supporting the motor. And a cylindrical fan accommodating the fan unit, and a rotatable fan for cooling a wide range including a cylindrical fan as a separate component that supports the cylindrical fan and is mounted on a communication device or the like. , A cylindrical fan covers a hollow cylindrical housing that is inclined and opened with respect to the exhaust direction of the fan, and an open surface of the cylindrical housing, and projects a part of the cylindrical housing in the exhaust direction of the fan. And a cover having an outlet that blows out at substantially right angles, and the fan itself is substantially parallel to the open surface of the cylindrical housing.
The fan itself in the exhaust direction of the fan
When the cylindrical fan operates with the mounting base as a base, a part of the exhaust air from the cylindrical fan is collected in the cover and blows out from the outlet, and the cylindrical fan rotates around the mounting base. It can be rotated counterclockwise by the wind of the fan itself and can cool a wide area.
Features .

Claims (6)

[Claims] 1. A fan having a fan, a motor for driving the fan, a columnar support for supporting the motor, a columnar fan for accommodating the fan, and a columnar fan. A wide-range cooling rotatable fan having a mounting base mounted on a communication device or the like that supports the cylindrical fan as a component of the rotary fan, wherein the cylindrical fan has an opening inclined with respect to the exhaust direction of the fan. Hollow cylindrical housing, and covering the open surface of the cylindrical housing,
A cover having a blow-out port that projects part of the fan and blows out substantially at right angles to the exhaust direction of the fan, wherein when the cylindrical fan operates based on the mounting base, one of the exhausts from the cylindrical fan is reduced. A wide-range cooling rotatable fan characterized by that the cylindrical fan itself rotates counterclockwise around the mounting base by collecting the parts in the cover and blowing out the air from the outlet. 2. A mounting section, wherein the mounting base slidably supports the cylindrical support section of the cylindrical fan, and a ring-shaped mounting frame connected around the support section by a plurality of ribs. 2. The apparatus according to claim 1, further comprising: a mounting portion provided on the mounting frame for mounting the communication device or the like, wherein a wire for driving the fan is inserted into a predetermined portion of the mounting frame. 3. Rotary fan for wide range cooling. 3. The mounting frame of the mounting base has a concave groove for making the edge of the bottom surface of the cylindrical fan rotatable, and the concave groove and the edge of the bottom surface of the cylindrical fan are connected to each other. 3. The wide-range cooling rotatable fan according to claim 2, wherein the rotatable fan is rotatably engaged by a bearing. 4. The column includes a plurality of metal conducting portions provided on the entire circumference of a specified position, and a plurality of flanges sandwiching and fixing the plurality of metal conducting portions. The shape supporter according to claim 2 or 3, further comprising a plurality of metal brushes disposed on an inner surface between the plurality of flanges of the support portion and connected to the wire. A wide-range cooling rotatable fan as described. 5. The wide-range cooling rotation according to claim 4, wherein power can be supplied irrespective of rotation of said cylindrical fan by ensuring that said metal conduction portion and said metal brush are in contact with each other. A universal fan. 6. The wide-range cooling rotatable fan according to claim 1, wherein said cover covers substantially one-fourth of an exhaust surface.