JPH0419891A - Dust removing device - Google Patents

Abstract

PURPOSE:To prevent an equipment as a cooling object from increasing the temperature higher than a limit temperature while securing a required air current passing area when a filter member is clogged by dust by installing the zig-zag filter member cross an air current path and forming an elastically movable separate filter piece by separating a bent spot on the exhaustion side. CONSTITUTION:In the process of using a drive device, the dust in air sucked by a cooling fan 14 is stuck to a filter member 16 and the air transmissivity of the filter is lowered. In this process, the temperature is gradually increased from the inside temperature in the case of starting the use of the drive device. According to advancement for the dirt of the filter member 16, the quantity of the air current passing through the filter member 16 is extremely lowered. However, the air flow path is formed by mutually separating separate filter pieces 16a, which constitute the filter member 16, while mutually elastically bending the separated side with air pressure loaded onto this filter. Thus, the temperature in a drive device 4 can be prevented from reaching the limit inside temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a dust removal device mainly installed in an optical disk information recording/reproducing device or the like.

(Prior Art) In the information recording/reproducing main device described above, a means for rotating the optical disk, an electric circuit board for controlling the optical head, etc. are arranged inside the device case, and heat generation during the control process causes Raise the temperature of the internal air. For this reason, there is a risk that the loaded optical disk and peripheral mechanisms will be heated to a temperature higher than the permissible limit and may be thermally damaged. Therefore, cooling air is circulated inside the device image to keep the internal temperature low by air cooling, but if the introduced external air contains dust, it may damage the lens surface of the optical system used. The above-mentioned dust may adhere and cause accidents such as interfering with recording and reproduction. For this reason, means such as fans that forcefully send air into the device body are usually equipped with a filter, which collects dust and uses the clean air that passes through the filter to cool the internal mechanism. I am trying to make sure that this is done.

(Problem to be Solved by the Invention) However, when removing dust by placing the filter in the air flow path so as to block it, the amount of dust captured by the filter increases. When the amount increases, clogging occurs and flow resistance increases. As a result, the amount of air passing through the device panel per unit time decreases, making the original purpose of air cooling insufficient and causing the temperature to rise beyond the permissible limit, which may cause damage to optical disks and peripheral mechanisms. This will result in thermal damage. To do this, you must carefully monitor the condition and replace the filters frequently.

(Objective of the Invention) The present invention has been made based on the above circumstances, and even if dust adheres to the filter surface and the breathability deteriorates, the required air flow rate can be ensured and the temperature rise can be prevented. The purpose of the present invention is to provide a dust removal device devised to reduce the amount of dust.

(Means for Solving the Problems) For this reason, in the present invention, filter members bent in a zigzag manner are disposed intersectingly in the air flow path, and dust is adsorbed and removed through the filter member. In the dust removal device, the filter member is configured into a plurality of separated filter pieces by separating the bent portion located at the end of the exhaust side of the filter member, and the adjacent separated filter pieces are separated on the separation side by wind pressure applied thereto. The structure is such that it can move elastically.

(Function) Therefore, as long as the filter member does not become clogged,
Dust on the air flowing through the air flow path is adsorbed to the filter member, for example, electrostatically or by physical approach such as collision, and the air is supplied after passing through the filter member. , dust adheres to the filter surface,
As the flow resistance increases, wind pressure acts to spread the separation points of each separation filter piece, allowing air to circulate without passing through the filter member. As a result, the required amount of air circulation is ensured, so the temperature does not rise beyond the permissible limit, and the product life of optical discs, peripheral mechanisms, etc. is not shortened and can be used for a long time. .

(Implementation Side) Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings. In the figure, reference numeral 1 denotes a drive case that protects and houses the optical disk drive device 4, power supply 13, cooling fan 14, etc., and is located on the opposite side to the side where the cooling fan 14 is installed. Insertion port 2
, a cooling air outlet 3 is opened, respectively.

In the drive device 4, the cartridge insertion slot 2 is provided.
A spindle motor 7 rotates the optical disk cartridge 6 loaded in the drive device 4 via the drive device 4, and a drive device 9 moves the optical head 8 in correspondence with the cartridge 6. An electric board 5 for drive control of the drive device 4 is disposed in a cooling air passage area.

The cooling fan 14 is the air inlet 1 of the drive case 1.
A dust removing device 15 according to the present invention is disposed in the drive case 1, facing the cooling fan 4a, and located on the outlet side of the cooling fan 14. The dust removal device is
A filter member 1G bent in a zigzag manner is arranged so as to cross the airflow passage 15a, and the filter member 16 has a bent part located at its exhaust side end separated from the filter member 1G.
This constitutes a plurality of separation filter pieces 16a. On the separation side, the separation filter pieces 16a are configured to elastically move so that adjacent pieces move apart as shown by dotted lines due to the wind pressure applied thereto, as shown in FIG.

In addition, in the figure, numeral 11 is a power cable, 10 is a head cable, and 12 is a board cable.

In such a configuration, dust in the air sucked in by the cooling fan 14 during use of the drive device 4 adheres to the filter member 16, and its air permeability decreases. In this process, the internal temperature T0 of the drive device is gradually increased from the temperature T0 at the start of use. Filter member 16
As the contamination progresses, the flow rate of air passing through the filter member 16 decreases significantly, but due to the wind pressure applied thereto, the separation filter pieces 16a that make up the filter member 16 elastically move their separation sides to each other. By bending and separating from each other, an air flow passage 17 is formed, so a constant passage cross-sectional area is ensured, and the saturation temperature is reached by increasing the temperature to a temperature (T1) slightly lower than the limit internal temperature (T2). The temperature rise stops and the inside of the drive device 4 reaches the limit internal temperature (T2)
can be prevented from reaching.

(Effects of the Invention) The present invention has been described in detail above, and the separation filter is elastically movable by installing a zigzag filter member across the airflow passage and separating the bent portions on the exhaust side. By making it a piece, when the filter member becomes clogged with dust, it is possible to secure the necessary and desired air flow cross-sectional area and prevent the temperature of the equipment to be cooled from rising above the limit temperature.

Therefore, burnout and the like can be avoided, and the filter can be replaced as needed, making management easier.

[Brief explanation of drawings]

Figure 1 is a schematic sectional view showing one embodiment of the present invention, Figure 2 is an external perspective view, Figures 3 (a) and (b) are enlarged side views showing how it is used, and Figure 4 is a change in temperature inside the machine. This is a graph showing.

Claims (1)

[Claims] In a dust removal device in which a filter member bent in a zigzag manner is disposed intersectingly in an air flow path, and dust is adsorbed and removed through the filter member, the dust removal device is located at the exhaust side end of the filter member. The filter member is configured into a plurality of separated filter pieces by separating the bent portions, and is configured to be elastically movable on the separation side so that adjacent separated filter pieces are separated by wind pressure applied thereto. dust removal equipment.