JPS62188088A - Air circulation and filtering device - Google Patents

Abstract

PURPOSE:To improve the dustproof efficiency, by guiding the air flow taken out to the outer peripheral side of a magnetic disk almost perfectly into a filter with a spoiler. CONSTITUTION:A circular air flow that flows with the surface of a disk 2 which turns within an air tight container 4 is flown in almost perfectly to an air filter 5a with a spoiler 3a. And clean air through the filter 5a flows in toward a magnetic head 1, and the dustproof efficiency can be improved.

Description

[Detailed Description of the Invention] [Summary] Airtightness of a magnetic disk device such as a head disk assembly (HD A) type or a disk enclosure (DE) type in which magnetic disks, magnetic heads, etc. are housed in an airtight container and configured as a module. In the air circulation filtration device provided in the container, the dust removal efficiency is improved by configuring the air blocked by the spoiler to be guided directly to the inlet of the air filter.

[Industrial application field]

The present invention relates to an air circulation filtration device provided within an airtight container of a fixed media type magnetic disk drive.

Magnetic disk drives are broadly classified into removable media type and fixed media type based on device implementation.

Among these, fixed media type devices are modularized by housing the recording medium, recording medium drive shaft, magnetic head, carriage (61) 1-air head drive system, etc. in an airtight container, simplifying the structure and miniaturizing it. - Lower prices and higher recording densities are being promoted.

The above-mentioned modular device is generally called a head disk assembly type or a disk enclosure type, and sufficient measures are taken against the intrusion of dust from the outside.

However, the generation of dust inside the airtight container cannot be avoided, and therefore it is necessary to provide a means to completely remove it.

■ is a magnetic head.

2 is a magnetic disk that rotates as shown by arrow A.

3b is a resin spoiler provided in front of the magnetic head l with respect to the direction of relative movement with the magnetic disk 2, and inhibits the airflow moving along the surface of the magnetic disk 2 and guides it toward the outer circumference.

4 is an airtight container.

5b shows a circulating air filter.

For example, in the case of an 8A inch magnetic disk device.

The spoiler 3b has a distance of about 1 m from the surface of the magnetic disk 2.
It is provided so that a gap of m is created.

Therefore, the airflow that moves along the surface of the magnetic disk 2 is blocked by the spoiler 3b and guided toward the outer circumference of the magnetic disk 2 along the leading edge of the spoiler 3b, as shown by arrow B. After that, the air mainly flows as shown by arrow C, flows through the air filter 5b in the direction shown by the arrow, and the purified air is guided towards the magnetic disk 2 as shown by arrow E, and is guided into the airtight container 4. air circulation and filtration.

[Problem that the invention seeks to solve]

In the air circulation filtration device having the above configuration, the spoiler 3b
There is a problem in that a part of the air that has been guided toward the outer circumferential side of the magnetic disk 2 flows toward the magnetic head 1 as shown by arrow F without being filtered by the air filter 5b.

Therefore, an object of the present invention is to extract air to the outer peripheral side of the magnetic disk 2 by the spoiler 3b.

The purpose is to flow the air to the magnetic head 1 side after being filtered by the air filter 5b as much as possible.

[Means for solving problems]

FIG. 1 is a diagram showing the principle of the present invention, in addition to the reference numerals explained in FIG. 3.

Reference numeral 5 denotes an air filter that is provided close to the outer periphery of the plurality of magnetic disks 2 and in which an air inlet and an air outlet are arranged in a tangential direction.

A spoiler 3 is provided to obstruct the flow of air moving along the recording surface of each magnetic disk 2 and guide it directly to the air inlet side of the air filter 5.

[Effect]

That is, the air filter 5 is placed close to the outer periphery of the magnetic disk 2, and the spoiler 3 is provided so that the air guided toward the outer periphery of the magnetic disk 2 by the spoiler 3 is guided directly to the air inlet of the air filter 5. This allows air completely filtered by the air filter 5 to flow toward the magnetic head l.

〔Example〕

FIGS. 2(a) and 2(b) are configuration diagrams of the embodiment, and FIG. 2(a) is a plan view.

(b) is a Y arrow view.

The spoiler 3a and the housing of the air filter 5a are integrally made of aluminum alloy, which is a good thermal conductor.

Moreover, the air filter 5a has one side wall 51 connected to the magnetic disk 2.
The other side wall is placed close to the outer periphery of the airtight container 4.
It is adjacent to.

As a result, the air guided to the outer circumferential side of the magnetic disk 2 by the spoiler 3a can almost completely flow to the air filter 5a, and therefore, the air completely filtered by the air filter 5a can be sent to the magnetic head 1. flows towards.

Further, by making the spoiler 3a from a good thermal conductor, the temperature distribution in each part of the magnetic disk 2 can be made uniform, and off-track can be prevented.

In addition, by integrating the spoiler 3a and the air filter 5a, it is possible to reduce the weight, volume, and number of parts.

〔Effect of the invention〕

As explained above, according to the present invention, the air taken out to the outer circumferential side of the magnetic disk by the spoiler can almost completely pass through the air filter, and the air that has passed through the air filter can be passed to the side of the magnetic head. Since it can be poured in, the filtration efficiency can be improved and the magnetic head can be prevented from being contaminated by dust.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the principle of the present invention. FIG. 2(b) is a configuration diagram of the embodiment. FIG. 3 is an explanatory diagram of a conventional example. Also in Figure 1. ■ is a magnetic head, 2 is a magnetic disk. 3 is a spoiler, 4 is an airtight container.

Claims (2)

[Claims] (1) An air circulation filtration device for a magnetic disk device in which a plurality of magnetic disks (2) are housed and driven in an airtight container, the air circulation filtration device being close to the outer periphery of the plurality of magnetic disks (2). an air filter (5) provided with an air inlet and an air outlet arranged in a tangential direction; An air circulation filtration device characterized by comprising a spoiler (3) provided so as to guide the air directly to the air inlet side of the filter (5). (2) The air circulation filtration device according to claim (1), wherein the spoiler (3) is made of a good thermal conductor.