JP2012040488A - Filter structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter structure which can be used for a long period of time without maintenance by remarkably reducing the frequency for cleaning air filter by detaching the same regularly.SOLUTION: The air inlet port and the air outlet port for flowing air for cooling the inside of the device are arranged in opposite side feces of the device, the air supplying fan for flowing the air from the air inlet port to the air outlet port and the roll-shape filter blocking dusts so as to encircle the outer periphery or the inner periphery of the device side feces are installed, and the driving part rotating the roll-shape filter so as to encircle the outer periphery or the inner periphery of the device side feces and the filter operating shaft are installed.

Description

  The present invention relates to a dust collecting filter attached to a device having a cooling fan, and relates to a maintenance-free filter structure that can be automatically cleaned.

  Many devices such as PCs are operating at the manufacturing site, and in many cases, electronic parts are incorporated therein. These often require cooling during operation, and fans are used.

  When performing cooling that requires a flow of air by a fan or the like, there is a problem that dust contained in the air hinders cooling due to long-term operation. For this reason, a filter is provided on the front surface of the fan, and consideration is given to reduce the intrusion of dust into the apparatus.

  In this case, the intrusion of dust into the apparatus is reduced, but dust accumulates on the filter, so it is necessary to clean it at regular intervals.

  The interval at which the above work is required varies depending on the amount of dust in the air, the amount of air passing through, the size of the filter, the collection performance, etc., but when there is an extremely large amount of dust or the amount of air passing through For example, the interval between the cleaning operations becomes extremely short.

  In order to reduce the load of the filter cleaning work, it is conceivable to adopt a structure capable of easily cleaning the filter. However, it is desirable to stop the device for removal in the above environment, but there are many cases where this is not possible. Also, depending on the location of the filter, the work load may further increase.

  Therefore, it is desirable to be able to clean automatically without removing the filter. Patent Document 1 discloses a method of automatically removing dust adhering to the surface by rotating a circular filter. However, in this method, as described above, for example, in an extremely dusty environment, a large amount of dust is removed, and processing of collected dust becomes a problem.

  Patent Document 2 automatically cleans with a brush while operating a large filter surrounding the apparatus. Also in this case, there is a possibility that dust accumulates in the vicinity of the brush under the environment as described above, causing a problem.

  Patent Document 3 discloses a method for efficiently discarding collected dust. Although it is useful in that dust can be collected without being diffused to the surroundings such as indoors, it is not necessary to consider the diffusion of dust in an extremely dusty environment as described above.

Japanese Patent Laid-Open No. 2007-130628 Japanese Patent Laid-Open No. 10-2604 JP 2010-65908 A

In an extremely dusty environment, the filter is immediately clogged and the amount of air passing therethrough is reduced, so that the cooling effect is also reduced and the storage device cannot be sufficiently cooled. The present invention has been made in view of the above problems, and provides a filter structure that can greatly reduce the frequency of periodically removing and cleaning the air filter, and can be used for a long period of time without maintenance. is there.

  As means for solving the above-mentioned problems, the invention according to claim 1 is characterized in that an air inlet and an exhaust port for flowing air for cooling the inside of the apparatus are arranged on the side of the apparatus, and air is supplied from the intake port to the exhaust port. The air supply fan to be flown, and the roll side filter that blocks dust to surround the device side outer periphery or inner periphery and the intake and exhaust ports, and the roll filter rotates to surround the device side outer periphery or inner periphery The filter structure is provided with a driving unit and a filter operation shaft.

  According to a second aspect of the present invention, cooling is performed when the dust collected by being blocked by the roll-shaped filter at the intake port portion rotates and moves the roll-shaped filter and is positioned at the exhaust port portion. 2. The filter structure according to claim 1, wherein the filter is cleaned by blowing away dust on the filter with exhaust air after the exhaust.

  The invention according to claim 3 is the filter structure according to claim 1 or 2, characterized in that the rotational speed of the roll-shaped filter can be varied depending on the amount of dust.

  According to the present invention, the roll filter 3 can be automatically cleaned without being equipped with a cleaning brush or dust collecting means while being attached to an apparatus that needs to be cooled, and the roll filter 3 is kept in a cleaned state. Therefore, it is possible to provide a device that operates in an extremely dusty environment without replacing the filter for a long time.

It is the side conceptual diagram which showed one example of embodiment of this invention and looked at the case where the roll filter is attached to the up-and-down side surface of an apparatus from the side. It is a three-dimensional conceptual diagram showing an example of the embodiment of the present invention and showing the flow of the roll filter and air when the roll filter is attached to the side surface of the apparatus. It is a three-dimensional conceptual diagram showing an example of an embodiment of the present invention and showing a relationship between a roll filter and a roll filter operation axis for rotating the roll filter.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a conceptual side view of an apparatus 1 as viewed from the side, showing an example of an embodiment of the present invention. The device 1 contains equipment that needs to be cooled. A roll filter 3 surrounds the upper and lower side surfaces of the apparatus 1 around this, and is operated by a roll filter operating shaft 2.

  An air flow for cooling is generated by the fan 7, and an external air flow A enters the inside of the device 1 to become an air flow B inside the device. After cooling the inside of the device 1, an exhaust flow C It becomes.

At this time, the apparatus 1 of FIG. 1 collects dust by the flow A of the outside air passing through the roll filter 3. Next, the air passes through the inside of the apparatus 1 to become an air flow B inside the apparatus 1 and cools necessary equipment. Further, the air is exhausted from the apparatus 1, but here the exhaust flow C is generated, and by rotating the roll filter 3, dust adhering to the roll filter 3 is blown off and cleaned on the intake side.

  The outside air flow A is always supplied with a cleaned surface, and the dust-attached roll filter 3 is cleaned as it moves to the exhaust air flow C.

  The filter used is a non-woven fabric made of plastic fibers or a partially bonded plastic long fiber. It is also possible to directly use a roll shape obtained by processing a sheet-like filter member into an endless structure.

  In order to rotate the filter, it has a roll-like endless structure, and it is possible to attach a resin guide to rotate the filter at both ends, and even if a jig for fixing the filter is attached to the belt for rotation good.

  The filter processed into a roll is not so strong in mechanical strength, and it is necessary to improve the mechanical use in order to rotate it.

  Fans 7 for cooling can be attached before and after the intake port 5 and the exhaust port 6. It is more efficient to cool the air that directly hits the equipment that needs to be cooled. However, in order to blow off the dust trapped in the roll filter 3, the air is blown from the inside of the roll filter 3 to the outside on the exhaust port 6 side. The cleaning efficiency is better if it is installed to flow.

  Further, the cooling fan 7 and the cleaning fan 7 may be attached to the intake port 5 and the exhaust port 6, respectively. Further, the efficiency is improved by changing the rotation speed of the roll filter 3 or changing the rotation frequency depending on the degree of contamination of the filter. If the dirt is severe, the fan may not be cleaned unless it is rotated.

  FIG. 2 is an example of the second embodiment of the present invention, and is a three-dimensional conceptual diagram showing the roll filter 3 and the flow of air. In the first embodiment, the roll filter 3 is surrounded on the upper and lower surfaces and the side surfaces of the apparatus 1, but in this embodiment, the roll filter 3 is surrounded on the side surfaces.

  For this reason, the apparatus 1 can be fixed to the bottom plate 4 or the upper surface (not shown) for convenience of explanation. Even when the apparatus 1 is not fixed, a plate or the like is provided so that air does not enter from the gap between the roll filter 3 and the apparatus 1.

  FIG. 3 is a three-dimensional conceptual diagram showing the relationship between the roll filter 3 and the filter operating shaft 2 for rotating the roll filter 3 according to the third embodiment of the present invention, and shows the filter structure attached to the inside of the apparatus 1. .

As described above, the air sucked from the intake port 5 passes through the roll filter 3 to become the air flow B inside the apparatus 1 and cools the necessary equipment, and then rolls with the exhaust flow C. This embodiment is exhausted from the exhaust port 6 while blowing off dust adhering to the filter 3. In this embodiment, the roll filter 3 is not exposed, so that the handling becomes easy. On the other hand, dust easily enters the inside of the device 1.

  In addition, the present invention including the above embodiment functions as a prefilter. If necessary, a fixed filter can be used in combination.

DESCRIPTION OF SYMBOLS 1 ... Device 2 ... Roll filter operating shaft 3 ... Roll filter 4 ... Bottom plate 5 ... Intake port 6 ... Exhaust port 7 ... Fan A ... Flow of outside air B ..Air flow in the device C ... exhaust flow

Claims (3)

  An air inlet and an exhaust port for flowing air for cooling the inside of the device are provided on the side of the device, an air supply fan for supplying air from the intake port to the exhaust port, and an outer periphery or inner periphery of the device, and the intake and exhaust ports are surrounded. The filter structure is provided with a roll-shaped filter that blocks dust, and is provided with a drive unit and a filter operation shaft that rotate the roll-shaped filter so as to surround the outer periphery or inner periphery of the apparatus side surface. .   When dust collected by being blocked by the roll filter at the intake port rotates and moves the roll filter and is positioned at the exhaust port, the dust is blown off by the exhaust air after cooling. The filter structure according to claim 1, wherein the filter is cleaned.   The filter structure according to claim 1 or 2, wherein a rotational speed of the roll-shaped filter can be varied depending on an amount of dust.