JP2001344961A - Cooling structure of magnetic disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling structure of magnetic disk devices which efficiently cools the magnetic disk devices constituted by disposing the plural magnetic disk devices arranged with magnetic disk sides and printed circuit board sides varying in guarantee temperatures adjacently to each other and packaging the same at a back panel. SOLUTION: This cooling structure has cooling control boards which make the velocity of wind of the cooling air flowing on the printed circuit board sides higher than the velocity of wind of the cooling air flowing on the magnetic disk sides between the magnetic disk sides and the printed circuit board sides of the magnetic disk devices adjacently to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling structure for a magnetic disk drive in which a plurality of magnetic disk drives having different guaranteed temperatures and a printed circuit board are mounted adjacent to each other and mounted on a back panel. The present invention relates to a cooling structure of a magnetic disk device that efficiently cools a disk device and improves connection reliability between a magnetic disk device and a back panel.

[0002]

[Prior art]

FIG. 6 shows a mounting structure of a magnetic disk device generally employed. In the figure, a plurality of magnetic disk devices are inserted from the front, connected to a back panel, and housed in an electronic device.

[0004] As shown in FIG.
Is a device including a magnetic disk 51, a disk drive mechanism 52, a magnetic head 53, and a printed circuit board 54 on which an electronic component 55 constituting a circuit including a control mechanism associated therewith is mounted. A disk 51 is disposed, a printed circuit board 54 is disposed on the other surface, and a heat radiating plate 57 made of an aluminum plate, which is a material having good thermal conductivity, is provided on an outer surface on which the magnetic disk 51 is disposed. In addition to preventing dust from entering the disk, heat generated from the magnetic disk 51 is radiated to the outside. The printed circuit board 54 is in a state where the electronic components 55 and the like are exposed.

In using the magnetic disk drive 50, the thermal temperature guarantee is different between the printed circuit board 54 and the magnetic disk 51, and the printed circuit board 54 is not.
While the side is set to a high temperature, the magnetic disk 5
The first side is set to a lower temperature than the printed circuit board 54 side. The magnetic disk device 50 is connected to a magnetic disk control device that controls the plurality of magnetic disk devices 50 by a connector 56 provided on the printed circuit board 54.

As shown in FIG. 8, a connection with a magnetic disk control device is established by a connector 56 provided on a printed circuit board 54.
Is connected to the magnetic disk control device via the back panel 62. Also, the back panel 62
A connector to be connected to the magnetic disk device 50 and electronic components constituting various circuits are mounted.

By the way, the structure for cooling the plurality of magnetic disk devices 50 connected to the back panel 62 is such that the warm air of the magnetic disk device 50 is circulated through the ventilation holes 63 formed in the back panel 62 and discharged to the outside of the electronic device 61. The cooling fan 64 is installed behind the back panel 62 so as to perform the cooling operation.

FIG. 9 shows a diagram of the prior art. In the same figure, a plurality of magnetic disk devices 50a, 50b, 50c on which a magnetic disk 51 side and a printed circuit board 54 side having different guaranteed temperatures are arranged adjacent to each other and a back panel 6 is provided.
2 and the magnetic disk devices 50a, 50b, 5
Vent holes 63 for forming warm air of 0 c in the back panel 62
From the electronic device. For example, the magnetic disk devices 5 adjacent to each other
0a of the printed circuit board 54 and the magnetic disk drive 50
b, a cooling air is circulated between the magnetic disk 51 side and the heat generated on the printed circuit board 54 side and the heat generated on the magnetic disk 51 side transmitted to the heat radiating plate 57 by the same cooling air, and the warm air is vented. It is distributed from 63 and discharged outside the electronic device.

In this configuration, the temperature of the magnetic disk 51 becomes high due to heat radiation of the adjacent printed circuit board 54 being radiated to the magnetic disk 51 side. The guaranteed temperature of the printed circuit board 54 is set higher than the guaranteed temperature of the magnetic disk 51, and
In order to satisfy the guaranteed temperature of the magnetic disk 51 affected by the heat generation of 4, a large amount of cooling air is required, and the amount of cooling air flowing between the printed circuit board 54 and the magnetic disk 51 is increased. Therefore, the size of the cooling fan 4 needs to be increased.

[0010]

As described above, the prior art has the following problems.

1) In cooling a magnetic disk drive in which a magnetic disk and a printed circuit board having different guaranteed temperatures are arranged, the magnetic disk drive cannot be cooled efficiently.

2) Since a ventilation hole for circulating warm air of the magnetic disk drive is formed in the back panel, a large number of electronic components cannot be mounted on the back panel. Furthermore, dust accumulates on the connector connected to the magnetic disk mounted on the back panel, which lowers the connection reliability of the magnetic disk device.

SUMMARY OF THE INVENTION An object of the present invention is to cool a magnetic disk device having a magnetic disk side and a printed circuit board side having different guaranteed temperatures, particularly by forcibly cooling the high-temperature printed circuit board side, thereby reducing the amount of airflow. An object of the present invention is to increase the cooling efficiency of a magnetic disk drive. In addition, a large number of electronic components are mounted on the back panel without forming a ventilation hole through which warm air of the magnetic disk device is circulated on the back panel, and dust accumulates on a connector for connection with the magnetic disk mounted on the back panel. And to improve the connection reliability of the magnetic disk drive.

[0014]

In order to solve the above problems, the present invention employs the following means.

A plurality of magnetic disk devices, each having a magnetic disk side and a printed circuit board side having different guaranteed temperatures, are mounted adjacent to each other on a back panel, and warm air of the magnetic disk devices is circulated through a ventilation hole formed in the back panel. In the cooling structure of the magnetic disk drive configured to be discharged to the outside of the electronic device, the wind speed of the cooling air flowing on the magnetic disk side between the magnetic disk side and the printed circuit board side of the magnetic disk unit adjacent to each other And a cooling control plate for increasing the velocity of the cooling air flowing through the printed circuit board side.

By taking the above measures, the cooling efficiency of the magnetic disk drive can be increased with a small airflow by particularly forcibly cooling the printed circuit board side where the temperature becomes high.

In a cooling structure for a magnetic disk drive in which a plurality of magnetic disk drives having different guaranteed temperatures and a printed circuit board are disposed adjacent to each other and mounted on a back panel, the magnetic disk drive is mounted on the back panel. Cooling air is circulated vertically in the mounted state, and the flowing warm air of the magnetic disk device is circulated through the lower end or the upper end of the back panel and discharged outside the electronic device.

By adopting the above-mentioned means, it is not necessary to form a ventilation hole for circulating warm air of the magnetic disk drive in the back panel, so that pattern wiring is easy and a large number of electronic components can be mounted on the back panel. Can be. Further, it is possible to prevent dust from accumulating on the connector connected to the magnetic disk device mounted on the back panel, thereby improving the connection reliability of the magnetic disk device.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention has the following embodiments.

As shown in FIGS. 1 and 2, the cooling structure of the magnetic disk drive comprises a plurality of magnetic disk drives 50 having a magnetic disk 51 arranged on one side and a printed circuit board 54 arranged on the other side. Back panel 2 adjacent
The cooling structure of the magnetic disk drive provided with a cooling fan 4 which constitutes a flow passage through which the warm air of the magnetic disk drive 50 flows through the ventilation holes 3 formed in the back panel 2 and is discharged to the outside of the electronic device 1 , The cooling air flowing through the printed circuit board 54 is compared with the cooling air flowing through the magnetic disk side 51 between the magnetic disk side 51 and the printed circuit board 54 of the magnetic disk device 50 adjacent to each other. A cooling control plate 5 for increasing the wind speed is provided.

By taking the above-described form, in cooling the magnetic disk side and the printed circuit board side having different guaranteed temperatures, the printed circuit board side, which becomes high in temperature, is particularly forcibly air-cooled, so that the magnetic disk drive can be operated with a small air volume. Increase cooling efficiency.

As shown in FIG. 3, the cooling structure of the magnetic disk drive has a magnetic disk disposed on one side surface.
In a cooling structure of a magnetic disk device in which a plurality of magnetic disk devices having a printed circuit board disposed on the other side surface are mounted adjacent to each other, the magnetic disk device 50
A cooling fan 4a for flowing cooling air in the vertical direction in a state where the cooling fan 4a is mounted on the back panel 2; A cooling fan 4b for discharging the device 1 to the outside.

By adopting the above-described embodiment, it is not necessary to form a ventilation hole for circulating warm air of the magnetic disk drive in the back panel, so that pattern wiring of the back panel is easy and a large number of electronic components are mounted on the back panel. Can be implemented. Further, it is possible to prevent dust from accumulating on a connector connected to the magnetic disk device mounted on the back panel, thereby improving the connection reliability of the magnetic disk device.

Further, the cooling fan 4a forms a cooling fan unit provided with a connector 10 for supplying power, and is mounted on the back panel 2 via the connector 10 so as to be installed on the lower or upper part of the magnetic disk device 50. I do.

By adopting the above configuration, active maintenance of the cooling fan installed at the lower part or the upper part of the magnetic disk drive is enabled.

Further, as shown in FIGS. 4 and 5, the cooling structure of the magnetic disk device is such that the magnetic disk device 50 is located between the magnetic disk 51 side and the printed circuit board 54 side of the magnetic disk device 50 adjacent to each other. And a cooling control plate 5 for increasing the wind speed of the cooling air flowing on the side of the printed circuit board 54 compared to the speed of the cooling air flowing therethrough.

By adopting the above-described embodiment, in cooling the magnetic disk side and the printed circuit board side having different guaranteed temperatures, the temperature rises to a high temperature without forming a ventilation hole through which warm air of the magnetic disk device flows in the back panel. By particularly forcibly cooling the printed circuit board side, the cooling efficiency of the magnetic disk drive is increased with a small air volume.

Further, as shown in FIGS. 2 and 5, the cooling control plate 5 is provided with a ventilation section 6 for circulating the warm air from the magnetic disk 51 to the printed circuit board 54, and a ventilation section for circulating the warm air from the magnetic disk 51. And a guide section 7 for guiding to the section 6.

With the above configuration, the heat generated on the magnetic disk side is also cooled by radiation.

Further, the cooling control plate 5 is formed of a material having good heat conductivity.

By adopting the above configuration, the magnetic disk drive is cooled by the cooling air by applying heat to the cooling air, and the cooling control plate is also cooled, thereby improving the cooling efficiency. Allows to cool.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A typical embodiment according to the present invention will be described with reference to FIGS. In the following, the same portions are denoted by the same reference numerals, and detailed description may be omitted. As described with reference to FIG. 6, the mounting structure of the magnetic disk device is such that a plurality of magnetic disk devices are inserted from the front, connected to the back panel, and housed in the electronic device.

FIG. 1 shows an embodiment of the present invention.

In the figure, a magnetic disk drive 50 is
The structure is the same as the structure shown in FIG. 7 described above, and the connection with the magnetic disk control device also employs the same structure as the structure shown in FIG. The structure that cools the plurality of magnetic disk devices 50 connected to the back panel 2 has a cooling fan that allows warm air from the magnetic disk devices 50 to flow through the ventilation holes 3 formed in the back panel 2 and to be discharged outside the electronic device 1. 4 is installed behind the back panel 2. Further, a cooling control plate 5 for controlling the speed of the cooling air is provided between the magnetic disk devices 50 adjacent to each other. In addition, the cooling control plate 5 forms a ventilation part 6 that allows one warm air to flow to the other side, and a guide part 7 that guides one warm air to the ventilation part 6. Details will be described with reference to FIG.

FIG. 2 shows an embodiment of the present invention.

In the figure, a plurality of magnetic disk devices 50a, 50b, 50c each having a magnetic disk 51 and a printed circuit board 54 having different guaranteed temperatures are mounted on the back panel 2 adjacent to each other. 50
The configuration is such that warm air of a, 50b, and 50c is circulated through each of the ventilation holes 3 formed in the back panel 2 and discharged to the outside of the electronic device. For example, between the printed circuit board 54 side of the magnetic disk device 50a and the magnetic disk 51 side of the magnetic disk device 50b adjacent to each other, the printed circuit board 54 is compared with the wind speed of the cooling air flowing through the magnetic disk 51 side. The cooling control plate 5 for increasing the wind speed of the cooling air flowing on the side is installed.

The cooling control board 5 is provided with a ventilation section 6 for flowing warm air from the magnetic disk 51 to the printed circuit board 54.
And a guide section 7 for guiding the warm air on the magnetic disk 51 side to the ventilation section 6 and suppressing the wind speed on the magnetic disk 51 side.
And form. That is, the wind speed A of the cooling air flowing on the printed circuit board 54 side and the wind speed B of the cooling air flowing on the magnetic disk 51 side have a relationship of A> B. Also,
The cooling control plate 5 is preferably formed of a material having good thermal conductivity such as aluminum.

With the above configuration, when the magnetic disk 51 and the printed circuit board 54 having different guaranteed temperatures are cooled, heat is transferred to the heat radiating plate 57 by particularly forcibly air-cooling the printed circuit board 54 which becomes high in temperature. The heat generated on the magnetic disk 51 side flows into the printed circuit board 54 via the ventilation part 6, thereby cooling the heat generated on the magnetic disk 51 side having a low guaranteed temperature by radiation. Further, by forming the cooling control plate 5 from a material having good thermal conductivity such as aluminum, the cooling of the magnetic disk device 50 is performed by applying heat to the cooling air by applying cooling to the cooling air.

FIG. 3 shows an embodiment of the present invention.

In FIG. 3, as shown in FIG.
The magnetic disk device 50 has the same structure as the structure shown in FIG. 7 described above, and a cooling fan 4a for flowing cooling air from above to below in a state where a plurality of magnetic disk devices 50 are mounted on the back panel 2. Is installed below the magnetic disk device 50. Also, as shown in FIG. 3B, the magnetic disk drive 5 flowing by the cooling fan 4a is used.
The cooling fan 4b that circulates the warm air of 0 through the lower end of the back panel 2 and discharges it to the outside of the electronic device 1
It is installed behind. The cooling fan 4a is
A cooling fan unit provided with a connector 10 for supplying power is formed, and mounted on a lower portion of the back panel 2 via the connector 10.

With the above configuration, it is not necessary to form a ventilation hole through which warm air of the magnetic disk device 50 flows in the back panel 2. Therefore, the pattern wiring of the back panel 2 is easy, and a large number of electronic components can be mounted on the back panel 2. Further, dust is prevented from accumulating on the connector 56 connected to the magnetic disk device 50 mounted on the back panel 2. Further, the magnetic disk drive 50
The cooling fan 4a installed at the lower part of the device enables active maintenance.

The cooling fan 4a is installed above the magnetic disk unit 50 so that cooling air flows from below to above with the plurality of magnetic disk units 50 mounted on the back panel 2, and The warm air of the magnetic disk device 50 that has flowed by the cooling fan 4a may flow through the upper end of the back panel 2 and be discharged to the outside of the electronic device 1.

FIG. 4 shows an embodiment of the present invention.

In the figure, the magnetic disk drive 50 has the same structure as that shown in FIG. 7 described above, and a plurality of magnetic disk drives 50 are mounted on the back panel 2 to cool down from above. Cooling fan 4a for circulating wind
Is installed below the magnetic disk device 50. Also,
A cooling fan 4b is provided at the back of the back panel 2 for flowing the warm air of the magnetic disk device 50 flowing by the cooling fan 4a through the lower end portion of the back panel 2 and discharging the warm air to the outside of the electronic device 1. The cooling fan 4a
Forms a cooling fan unit provided with a connector 10 for supplying power, and is mounted on a lower portion of a back panel via the connector 10.

Further, a cooling control plate 5 for controlling the speed of the cooling air is provided between the magnetic disk devices 50 adjacent to each other. In addition, the cooling control plate 5 includes a ventilation part 6 that allows one warm air to flow to the other side, and a guide part 7 that guides one warm air to the ventilation part 6. Details will be described with reference to FIG.

FIG. 5 shows an embodiment of the present invention.

In the same figure, for example, between the printed circuit board 54 side of the magnetic disk unit 50b adjacent to the magnetic disk unit 50b and the magnetic disk 51 side of the magnetic disk unit 50c.
A cooling control board 5 is provided for increasing the wind speed of the cooling air flowing on the printed circuit board 54 side as compared with the wind speed of the cooling air flowing on the magnetic disk 51 side.

The cooling control board 5 is provided with a ventilation section 6 for allowing warm air from the magnetic disk 51 to flow to the printed circuit board 54.
And a guide section 7 for guiding the warm air on the magnetic disk 51 side to the ventilation section 6 and suppressing the wind speed on the magnetic disk 51 side.
And form. That is, the wind speed A of the cooling air flowing on the printed circuit board 54 side and the wind speed B of the cooling air flowing on the magnetic disk 51 side have a relationship of A> B. Also,
The cooling control plate 5 is preferably formed of a material having good thermal conductivity such as aluminum.

According to the above configuration, when cooling the magnetic disk 51 and the printed circuit board 54 having different guaranteed temperatures, the printed circuit board 54, which is heated to a high temperature, is particularly forcibly air-cooled, so that the heat is transferred to the heat radiating plate 57. The heat generated on the side of the magnetic disk 51 flows into the printed circuit board 54 through the ventilation section 6 so that the heat generated on the side of the magnetic disk 51 having a low guaranteed temperature is also cooled by radiation. Further, by forming the cooling control plate 5 from a material having good thermal conductivity such as aluminum, the cooling of the magnetic disk device is added to the cooling air, and the cooling is also performed by the radiation of the cooling control plate. Further, a magnetic disk drive 5 is provided on the back panel 2.
There is no need to form a ventilation hole through which zero warm air flows, and a large number of electronic components can be mounted on the back panel.
Further, the magnetic disk device 50 mounted on the back panel
To prevent dust from accumulating on the connector that connects to the connector.

[0050]

According to the present invention, the following effects can be expected.

A plurality of magnetic disk devices having a magnetic disk disposed on one side and a printed circuit board disposed on the other side are mounted adjacent to each other on a back panel, and warm air of the magnetic disk device is formed on the back panel. In a cooling structure of a magnetic disk drive in which a cooling fan is installed, which constitutes a flow passage for discharging the air from the electronic device to the outside of the electronic device, between a magnetic disk side and a printed circuit board side of adjacent magnetic disk units. By providing a cooling control plate that increases the wind speed of the cooling air flowing through the printed circuit board side compared to the wind speed of the cooling air flowing through the magnetic disk side, the guaranteed temperature differs between the magnetic disk side and the printed circuit board side. In cooling, the cooling efficiency of the magnetic disk drive is increased with a small air volume by particularly forcibly cooling the printed circuit board side where the temperature is high. Door can be.

In a cooling structure of a magnetic disk drive in which a magnetic disk is disposed on one side and a plurality of magnetic disk drives on which a printed circuit board is disposed on the other side are mounted adjacently on a back panel. And a cooling fan that circulates cooling air in the up and down direction while the cooling air is mounted on the back panel, and warm air of the magnetic disk device that flows by the cooling fan is circulated through the lower end or upper end of the back panel and discharged outside the electronic device Since it is not necessary to form a ventilation hole for circulating warm air of the magnetic disk device in the back panel, pattern wiring of the back panel is easy, and a large number of electronic components are mounted on the back panel. be able to. Further, it is possible to prevent dust from accumulating on the connector connected to the magnetic disk device mounted on the back panel, and to improve the connection reliability of the magnetic disk device.

Further, the cooling fan forms a cooling fan unit provided with a connector for supplying power, and is mounted on a back panel via the connector to be installed at a lower portion or an upper portion of the magnetic disk device, thereby providing a magnetic fan. Active maintenance of the cooling fan installed at the lower or upper part of the disk device can be enabled.

Further, the wind speed of the cooling air flowing on the printed circuit board side is compared with that of the cooling air flowing on the magnetic disk side between the magnetic disk side and the printed circuit board side of the magnetic disk devices adjacent to each other. By providing a cooling control board for increasing the temperature, when cooling between the magnetic disk side and the printed circuit board side having different guaranteed temperatures, a high-temperature print can be performed without forming a ventilation hole through which warm air of the magnetic disk device flows in the back panel. In particular, the circuit board side can be forcibly air-cooled, and the cooling efficiency of the magnetic disk drive can be increased with a small air volume.

Further, the cooling control plate includes a ventilation portion for flowing warm air on the magnetic disk side to the printed circuit board side and a guide portion for guiding the warm air on the magnetic disk side to the ventilation portion. Can also be cooled by radiation.

Further, the cooling control plate is made of a material having good thermal conductivity, so that the cooling of the magnetic disk drive is applied to the cooling air and the cooling control plate is also cooled by radiating heat to improve the cooling efficiency. It is possible to cool a magnetic disk device having high heat generation and a large capacity.

[Brief description of the drawings]

FIG. 1 is a diagram of an embodiment of the present invention.

FIG. 2 is a diagram of an embodiment of the present invention.

FIG. 3 is a diagram of an embodiment of the present invention.

FIG. 4 is a diagram of an embodiment of the present invention.

FIG. 5 is a diagram of an embodiment of the present invention.

FIG. 6 is a mounting structure diagram of a magnetic disk device.

FIG. 7 is a diagram of a magnetic disk drive.

FIG. 8 is a diagram of the prior art.

FIG. 9 is a diagram of the prior art.

[Explanation of symbols]

 4a, 4b: cooling fan 5: cooling control plate 6: ventilation section 7: guide section

Claims (6)

[Claims] A magnetic disk is arranged on one side, and a plurality of magnetic disk units, each having a printed circuit board arranged on the other side, are mounted adjacent to each other on a back panel. In a cooling structure of a magnetic disk drive provided with a cooling fan constituting a flow passage for discharging from the electronic device through the ventilation hole formed, the magnetic disk side and the printed circuit board side of the magnetic disk unit adjacent to each other are provided. A cooling control plate (5) for increasing the wind speed of the cooling air flowing through the printed circuit board side as compared with the wind speed of the cooling air flowing through the magnetic disk side. . 2. A cooling structure for a magnetic disk drive, comprising: a plurality of magnetic disk drives having a magnetic disk disposed on one side and a printed circuit board disposed on the other side adjacently mounted on a back panel; A cooling fan (4a) that allows cooling air to flow in the vertical direction in a state that the cooling air is mounted on the back panel, and warm air of the magnetic disk device that flows by the cooling fan (4a) flows through the lower end or upper end of the back panel. A cooling structure for a magnetic disk drive, comprising: a cooling fan (4b) for discharging the electronic device to the outside. 3. The cooling fan (4a) is provided at a lower or upper portion of a magnetic disk drive by forming a cooling fan unit provided with a connector for supplying power and mounting the cooling fan unit on a back panel via the connector. 3. The cooling structure for a magnetic disk drive according to claim 2, wherein: 4. The cooling structure of a magnetic disk drive according to claim 1, further comprising: a printed circuit board that is located between the magnetic disk side and the printed circuit board side of the magnetic disk unit adjacent to each other. The cooling structure for a magnetic disk drive according to claim 2, further comprising a cooling control plate (5) for increasing a wind speed of cooling air flowing through the side. 5. The cooling control plate (5) includes a ventilation part (6) for flowing warm air on the magnetic disk side to the printed circuit board side, and a guide part for guiding the warm air on the magnetic disk side to the ventilation part (6). The cooling structure of a magnetic disk drive according to claim 1 or 4, further comprising (7). 6. The cooling structure for a magnetic disk drive according to claim 1, wherein said cooling control plate is formed of a material having good thermal conductivity.