JPS6355793A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To prevent the occurrence of dew condensation on a disk plate even when the temperature of the open air changes suddenly by providing a desiccant in the passage of open air that passes air for cooling the magnetic disk plate. CONSTITUTION:Open air taken in by a blower motor 1 through an open air passage 7 passes through a filter 2 and the desiccant 3 and is sent to an HDA 5 integrating a magnetic head, a magnetic disk plate and other mechanism parts to cool the disk plate 4. In the case where the temperature of open air becomes abruptly high while using a device due to the abnormality of an air conditioner and when the temperature of open air becomes suddenly high at the time of the leading of the air conditioner in winter, the disk plate 4 in the HDA 5 can not follow up the temperature of open air, and since open air raised in temperature though the change of temperature is small passes through the desiccant, moisture contained in the open air is removed, to reduce absolute humidity and dew condensation on the disk plate 4 is prevented.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a magnetic disk device.

[Conventional technology]

Conventionally, in this type of magnetic disk device, since the disk plate rotates at a high speed, heat is generated due to friction between the disk plate and the air. In order to prevent the temperature from rising due to this heat generation, outside air is taken in by a blower motor, and the outside air is cooled by applying it to the disk plate through a dust removal filter.

[Problem that the invention seeks to solve]

In the conventional magnetic disk drive described above, the outside air taken in by the blower motor is directly sent to the disk plate through only the filter, so if there is a sudden change in the outside air temperature, especially if the temperature rises, the temperature of the disk plate will be affected by the change in the outside air temperature. This has the drawback that dew condensation may occur on the disk surface.

SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic disk device that eliminates the above-mentioned drawbacks and eliminates dew condensation caused by outside air.

[Means for solving problems]

The structure of the present invention is a magnetic disk drive having a blower motor that takes in outside air through an outside air flow path in order to cool a magnetic disk plate, and is characterized in that the outside air flow path is provided with a desiccant.

〔Example〕

FIG. 1 is a block diagram of one embodiment of the present invention.

In the figure, 1 is a blower motor that takes in outside air and blows outside air to cool the disk plate 4, 2 is a filter that removes dust contained in the outside air taken in by the blower motor 1, and 3 is a filter that removes moisture from the outside air. 4 is a disk plate for storing data; 5 is an HDA that integrates the disk plate 4, magnetic head, and other mechanical parts;
(head disk assembly), 6 is a motor that rotates the disk plate 4.

Normally, outside air taken in by the blower motor 1 passes through a filter 2 and a desiccant 3 and is sent to the HDA 5 to cool the disk plate 4. During normal use, if the outside temperature suddenly increases due to an abnormality in the air conditioner in the computer room, or if the outside temperature suddenly increases due to startup of the computer room air conditioner in winter, the disk inside the HDA5 Although the plate 4 cannot rapidly follow the outside temperature and its temperature changes are small, the high temperature outside air passes through the filter 2 and the desiccant 3, so the moisture contained in the outside air is removed by the desiccant 3. The absolute humidity becomes low, and even if outside air is blown onto the disk plate 4, the relative humidity does not increase, and dew condensation can be prevented.

[Effects of the Invention] As described above, the present invention has the effect of preventing dew condensation on the disk plate even if a sudden change in outside temperature occurs by providing a desiccant in the outside air flow path.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention. 1... Blower motor, 2... Filter, 3... Desiccant, %,, -

Claims (1)

[Claims] What is claimed is: 1. A magnetic disk drive having a blower motor that takes in outside air through an outside air flow path to cool a magnetic disk plate, characterized in that the outside air flow path is provided with a desiccant.