JP4569356B2 - Electronic device cooling device - Google Patents

Description

  The present invention relates to a cooling device for an electronic device that cools an electronic device that generates heat.

  Since many electronic devices generate heat, it is common practice to rotate a fan, suck in outside air, and cool the electronic device with the outside air.

  When the fan sucks outside air, dust is sucked together with the outside air. If this dust adheres to the lead pins of a highly integrated circuit, it will cause a short circuit. For this reason, in order to prevent the inhalation of dust, generally, a dustproof filter is provided at the air inlet of the fan.

  If a large amount of dust adheres to the dust filter, the outside air intake amount of the fan decreases and the heat dissipation capability of the fan decreases. For this reason, although it is necessary to clean a dustproof filter regularly, since periodic cleaning of a dustproof filter requires time, the apparatus which cleans a dustproof filter automatically has been proposed conventionally.

  As an example, a filter device described in Japanese Utility Model Laid-Open No. 5-8355 is shown in FIG.

  The filter device shown in FIG. 8 includes a condenser 4, a fan 5 disposed adjacent to the condenser 4, and a filter unit 1 disposed so as to surround the condenser 4 and the fan 5. .

  The filter unit 1 includes a plurality of guide rollers 3 arranged around the condenser 4 and the fan 5, a driving roller 2, a filter main body 1 a spanned between the guide roller 3 and the driving roller 2, It is composed of The driving roller 2 is connected to a motor 6 via a belt 7. When the driving roller 2 is driven by the motor 6, the filter body 1 a circulates around the condenser 4 and the fan 5 in the direction of arrow C via the guide roller 3 and the driving roller 2.

  The fan 5 performs intake air from the direction of arrow A and exhausts air in the direction of arrow B.

  The filter device shown in FIG. 8 operates as follows.

  When the fan 5 rotates, the fan 5 takes in air from the direction of arrow A. For this reason, the dust contained in the outside air sucked in adheres to the filter main body 1 a located in front of the fan 5. For this reason, the condenser 4 to be cooled is exposed to outside air that does not contain dust, and the condenser 4 is cooled without inhaling the dust.

  Since the filter body 1 a circulates in the direction of the arrow C, the portion of the filter body 1 a to which dust adheres reaches the back of the fan 5 thereafter.

  Since the fan 5 exhausts in the direction of the arrow B, the dust adhering to the filter body 1a is discharged in the direction of the arrow B together with the air exhausted by the fan 5.

  The portion of the filter main body 1a from which the dust has been released in this manner then circulates in front of the fan 5 and attaches dust contained in the outside air sucked by the fan 5.

As described above, in the filter device shown in FIG. 8, the filter main body 1 a circulates around the condenser 4 and the fan 5, and therefore, dust attachment and discharge are repeated by the intake and exhaust of the fan 5. Therefore, the cleaning of the filter body 1a is automatically repeated, and it is not necessary to periodically clean the filter body 1a.
Japanese Utility Model Publication No. 5-8355 (FIG. 1)

  However, the conventional filter device shown in FIG. 8 has a problem that a large space is required for its installation.

  That is, in the conventional filter device shown in FIG. 8, it is necessary to dispose the filter main body 1a around the condenser 4 and the fan 5, so that a large space has to be occupied.

  Furthermore, in order to avoid contact with the filter main body 1a, it is necessary to secure a certain amount of space around the filter device. Therefore, in addition to a large space for the filter device, an additional space must be secured. did not become.

  Recently, electronic devices are strongly required to be reduced in size, and thus, a filter device that requires a large space is in conflict with such a requirement.

  The present invention has been made in view of such problems in the conventional filter device, and provides a cooling device for an electronic device that can exhibit the same filtering function in a smaller space than the conventional filter device. For the purpose.

  In order to achieve this object, the present invention is configured to inhale outside air through an intake port, an exhaust port that opens in the same direction as the intake port, is provided adjacent to the intake port, and the intake port. A fan that exhausts the sucked outside air through the exhaust port and air-cools the electronic device disposed between the intake port and the exhaust port, a driving roller, a driven roller, the driving roller, and the driven roller; And a dustproof filter that is driven across from the intake port and the exhaust port.

  According to the cooling device for an electronic device according to the present invention, when the fan sucks the outside air through the air inlet, the dust contained in the outside air adheres to the dustproof filter. The dust adhering to the dustproof filter is released to the outside when the fan exhausts through the exhaust port. The intake port and the exhaust port are disposed adjacent to each other, and the dustproof filter circulates facing the intake port and the exhaust port. That is, in the cooling device for an electronic device according to the present invention, unlike the conventional filter device, it is not necessary to arrange the dustproof filter around the electronic device to be cooled and the fan, and the dustproof filter is provided on one side of the electronic device. (In other words, along the intake and exhaust ports), the space required for the arrangement of the dustproof filter can be greatly reduced compared to the conventional filter device. .

  For example, the intake port and the exhaust port can be formed in a single housing, and the housing can be formed with a partition wall that sets the intake direction and the exhaust direction of the fan in the same direction. .

  Although the intake port and the exhaust port of the fan can be formed independently, the structure of the cooling device for the electronic device according to the present invention can be simplified by forming the intake port and the exhaust port in the housing. it can. Furthermore, when the intake port and the exhaust port are formed in the housing, a partition wall that sets the fan intake direction and the exhaust direction in the same direction can be formed in the housing. The structure of the cooling device for the electronic device according to the present invention can be further simplified.

  The cooling device for an electronic device according to the present invention is disposed on the opposite side of the air inlet and the air outlet with respect to the dust filter, and physically partitions the space facing the air inlet and the space facing the air outlet. A partition plate can be further provided.

  By arranging such a partition plate, the intake and exhaust ports are completely separated from each other, so that dust adheres to the dust-proof filter when the outside air is inhaled by the fan and dust is released from the dust-proof filter when the fan is exhausted. Efficiency can be increased respectively.

  It is preferable that the partition plate includes an inclined portion that is inclined with respect to both the intake port and the exhaust port.

  When the partition plate includes such an inclined portion, the outside air is smoothly sucked into the housing, and the air exhausted by the fan is smoothly discharged outside the housing. For this reason, the suction efficiency by which the fan sucks outside air and the exhaust efficiency by which the fan exhausts the outside air can be improved.

  It is preferable that the partition plate includes a curved portion that is convex with respect to both the intake port and the exhaust port.

  When the partition plate includes such a curved portion (for example, an arc portion), the outside air is smoothly sucked into the housing, and the air exhausted by the fan is smoothly discharged outside the housing. For this reason, the suction efficiency by which the fan sucks outside air and the exhaust efficiency by which the fan exhausts the outside air can be improved.

  The cooling device for an electronic device according to the present invention may include a temperature sensor that detects the temperature around the electronic device (particularly the leeward side of the electronic device). In this case, the drive roller is driven when the temperature detected by the temperature sensor exceeds a threshold value.

  When the temperature detected by the temperature sensor rises, the dust filter is clogged and the air flow deteriorates. As a result, the temperature is considered to have risen. For this reason, when the temperature detected by the temperature sensor exceeds the threshold value, clogging of the dustproof filter can be eliminated by starting the drive roller and cleaning the dustproof filter by exhausting the fan. it can.

  The electronic device cooling device according to the present invention may include a pressure sensor disposed between the electronic device and the dust filter. In this case, the rotation speed of the drive roller is changed according to the pressure detected by the pressure sensor.

  A drop in pressure detected by the pressure sensor indicates that the dust filter is clogged and air is not flowing sufficiently. For this reason, when the pressure detected by the pressure sensor decreases, the rotational speed of the drive roller is increased, i.e., the speed of the dust filter is increased, so that the dust filter is cleaned more frequently and the dust filter is clogged. Can be eliminated.

  The cooling device for an electronic device according to the present invention may include a rotation speed sensor that detects the rotation speed of the fan. In this case, the rotational speed of the drive roller is changed according to the rotational speed detected by the rotational speed sensor.

  The decrease in the rotation speed of the fan detected by the rotation speed sensor indicates that the dust filter is clogged and the air does not flow sufficiently. For this reason, when the rotational speed of the fan detected by the rotational speed sensor decreases, the rotational speed of the dust roller is increased by increasing the rotational speed of the drive roller, that is, by increasing the rotational speed of the dustproof filter. Filter clogging can be eliminated.

  In the cooling device for an electronic device according to the present invention, the intake port and the exhaust port are disposed adjacent to each other, and the dustproof filter faces the intake port and the exhaust port, that is, along the intake port and the exhaust port. Lap around. That is, in the cooling device for an electronic device according to the present invention, unlike the conventional filter device, it is not necessary to arrange the dustproof filter around the electronic device to be cooled and the fan, and the dustproof filter is provided on one side of the electronic device. Therefore, the space required for the arrangement of the dustproof filter can be greatly reduced compared to conventional filter devices. it can.

  Furthermore, compared to conventional filter devices, the dustproof filter itself can be made smaller, and even if the dustproof filter is damaged, the dustproof filter is maintained while maintaining the automatic cleaning function of the dustproof filter. Can be easily replaced.

[Example 1]
FIG. 1 is a plan view of a cooling device 100 for an electronic device according to a first embodiment of the present invention.

  The electronic apparatus cooling device 100 according to the present embodiment sucks outside air through the casing 13 in which the intake port 11 and the exhaust port 12 are formed, and the intake port 11, and the sucked outside air through the exhaust port 12. The air is exhausted, and the electronic device 14 disposed between the intake port 11 and the exhaust port 12 is air-cooled. The fan 15 is driven across the drive roller 16, the driven roller 17, and the drive roller 16 and the driven roller 17. And a dustproof filter 18 to be driven.

  Inside the housing 13, a partition wall 19 is formed at the boundary between the intake port 11 and the exhaust port 12, and the intake port 11 and the exhaust port 12 are separated by the partition wall 19, and the intake air The opening 11 and the exhaust port 12 are opened in the same direction, and the intake port 11 and the exhaust port 12 are opened adjacent to each other.

  Furthermore, an inclined wall 19 </ b> A for efficiently flowing air inside the housing 13 is disposed inside the housing 13.

  The dustproof filter 18 is formed in an endless shape (ring shape) by connecting both ends of a belt-like filter, and has a predetermined length (width) in a direction orthogonal to FIG.

  The driving roller 16 is disposed in front of the right end of the housing 13, and the driven roller 17 is disposed in front of the left end of the housing 13. For this reason, the dustproof filter 18 that is driven and driven between the drive roller 16 and the driven roller 17 is opposed to the intake port 11 and the exhaust port 12 in front of the intake port 11 and the exhaust port 12 of the housing 13. Is arranged.

  The drive roller 16 is connected to a motor (not shown), and is driven by the motor to rotate counterclockwise, causing the dust filter 18 to circulate in the direction of arrow S. That is, the dustproof filter 18 is disposed so as to cover the intake port 11 and the exhaust port 12 over the entire length thereof. For this reason, all of the outside air taken in by the fan 15 through the air inlet 11 and the air exhausted by the fan 15 through the air outlet 12 pass through the dustproof filter 18.

  The electronic device cooling apparatus 100 according to this embodiment having the above-described structure operates as follows.

  The drive roller 16 is driven by a motor (not shown) and causes the dust filter 18 to circulate around the drive roller 16 and the driven roller 17 in the direction of arrow S.

  As the fan 15 rotates, air outside the housing 13 is sucked into the housing 13 through the suction port 11 as indicated by an arrow IN. After the electronic device 14 is air-cooled, the outside air sucked into the housing 13 passes through the fan 15 and travels toward the exhaust port 12 defined by the partition wall 19 as indicated by an arrow R. Thereafter, as indicated by an arrow OUT, the outside air that has cooled the electronic device 14 is exhausted from the exhaust port 12.

  When the air outside the housing 13 is sucked into the housing 13, the air passes through the dust filter 18. For this reason, the dust contained in the outside air adheres to the surface of the dustproof filter 18.

  Since the dustproof filter 18 circulates in the direction of the arrow S, the portion of the dustproof filter 18 to which dust is attached moves from a position facing the intake port 11 to a position facing the exhaust port 12. Since air is released from the inside of the housing 13 from the exhaust port 12, the dust attached to the surface of the dustproof filter 18 is scattered from the surface of the dustproof filter 18 by the released air.

  Therefore, the dust adhering to the surface of the dust-proof filter 18 is released from the surface of the dust-proof filter 18 when it passes through the exhaust port 12, and the area where the dust has adhered reaches the position facing the intake port 11 again. In some cases, a region where dust is not attached faces the air inlet 11.

  As described above, in the electronic apparatus cooling apparatus 100 according to the present embodiment, when the dustproof filter 18 passes in front of the intake port 11, dust contained in the outside air adheres to the surface of the dustproof filter 18. When passing through the front of the exhaust port 12, dust attached to the surface of the dust-proof filter 18 is scattered by the wind pressure of the air exhausted from the inside of the housing 13.

  According to the cooling apparatus 100 for an electronic device according to the present embodiment, unlike the conventional filter device (see FIG. 8), it is not necessary to arrange the dustproof filter 18 around the electronic device 14 and the fan 15 that are the objects to be cooled. Since the dust filter 18 only needs to be disposed along the intake port 11 and the exhaust port 12, the space required for the layout of the dust filter 18 can be greatly reduced as compared with the conventional filter device. .

  In the electronic apparatus cooling apparatus 100 according to the present embodiment, the intake port 11 and the exhaust port 12 are formed as a part of the housing 13, but the arrangement of the intake port 11 and the exhaust port 12 is not limited thereto. It is also possible to form the intake port 11 and the exhaust port 12 as independent openings.

  Further, in the electronic apparatus cooling apparatus 100 according to the present embodiment, the partition wall 19 is provided to separate the intake port 11 and the exhaust port 12, but the partition wall 19 is not necessarily provided. For example, it is also possible to use a U-shaped pipe and have both opening ends thereof as an intake port 11 and an exhaust port 12, respectively.

[Example 2]
FIG. 2 is a plan view of the electronic device cooling apparatus 110 according to the second embodiment of the present invention.

  In the electronic device cooling apparatus 110 according to the present embodiment, the same components as those of the electronic apparatus cooling apparatus 100 according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The electronic device cooling device 110 according to the present embodiment further includes a partition plate 20 as compared with the electronic device cooling device 100 according to the first embodiment.

  The partition plate 20 is disposed on the opposite side of the intake port 11 and the exhaust port 12 with respect to the dust filter 18.

  The partition plate 20 includes a first plate 20a extending in parallel with the dust filter 18 and a second plate 20b extending orthogonal to the first plate 20a.

  The second plate 20b is disposed substantially on the same line as the partition wall 19, and physically partitions the space facing the intake port 11 and the space facing the exhaust port 12.

  As described above, in the electronic apparatus cooling apparatus 110 according to the present embodiment, the intake port 11 and the exhaust port 12 are completely separated by the partition plate 20, so that it is possible to increase the intake efficiency and the exhaust efficiency. As a result, the efficiency of dust adhering to the dustproof filter 18 when the fan 15 inhales outside air and the efficiency of dust scattering from the dustproof filter 18 when air is exhausted by the fan 15 can be improved as compared with the first embodiment. .

Example 3
FIG. 3 is a plan view of the electronic apparatus cooling apparatus 120 according to the third embodiment of the present invention.

  In the electronic device cooling apparatus 120 according to the present embodiment, the same components as those of the electronic apparatus cooling apparatus 100 according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The electronic device cooling device 120 according to the present embodiment is different in the shape of the partition plate from the electronic device cooling device 110 according to the second embodiment.

  In the present embodiment, the partition plate 21 includes a first plate 21 a extending in parallel with the dust filter 18, a first inclined portion 21 b inclined with respect to the intake port 11, and a second inclined portion 21 c inclined with respect to the exhaust port 12. And is composed of.

  Since the outside air sucked into the housing 13 through the air inlet 11 is changed in direction by the first inclined portion 21 b before entering the air inlet 11, it is surely introduced into the air inlet 11.

  Similarly, the air discharged to the outside of the housing 13 through the exhaust port 12 is surely released to the atmosphere because the direction is changed by the second inclined portion 21c after leaving the exhaust port 12.

  As described above, in the electronic apparatus cooling device 120 according to the present embodiment, the partition plate 21 includes the first inclined portion 21b and the second inclined portion 21c, so that the outside air is smoothly sucked into the housing 13. Further, the air exhausted by the fan 15 is smoothly discharged outside the housing 13. For this reason, the suction efficiency by which the fan 15 sucks the outside air and the exhaust efficiency by which the fan 15 exhausts the outside air can be improved as compared with the second embodiment.

  In addition, the partition plate 21 does not necessarily need to be provided with both the 1st inclination part 21b and the 2nd inclination part 21c, and can also provide only either one. Alternatively, for example, the second plate 20b according to the second embodiment can be provided instead of any one of the first inclined portion 21b and the second inclined portion 21c.

Example 4
FIG. 4 is a plan view of a cooling device 130 for an electronic device according to a fourth embodiment of the present invention.

  In the electronic device cooling apparatus 130 according to this embodiment, the same components as those of the electronic apparatus cooling apparatus 100 according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The electronic device cooling device 130 according to this embodiment is different from the electronic device cooling device 110 according to the second embodiment in the shape of the partition plate.

  The partition plate 22 in the present embodiment has a first curved portion 22a having a curvature that is convex with respect to the intake port 11, and a curvature that is convex with respect to the exhaust port 12. And a second curved portion 22b.

  Since the outside air sucked into the housing 13 through the intake port 11 is introduced along the first curved portion 22a before entering the intake port 11, the direction can be smoothly changed, and smoothly It is introduced into the intake port 11.

  Similarly, the air discharged to the outside of the housing 13 through the exhaust port 12 is exhausted along the second curved portion 22b after leaving the exhaust port 12, so that the direction can be smoothly changed. , Smoothly released into the atmosphere.

  As described above, in the electronic apparatus cooling device 130 according to the present embodiment, the partition plate 22 includes the first curved portion 22a and the second curved portion 22b, so that the outside air is smoothly sucked into the housing 13. Further, the air exhausted by the fan 15 is smoothly discharged outside the housing 13. For this reason, the suction efficiency by which the fan 15 sucks the outside air and the exhaust efficiency by which the fan 15 exhausts the outside air can be improved as compared with the third embodiment.

  The partition plate 22 does not necessarily include both the first curved portion 22a and the second curved portion 22b, and can include only one of the first curved portion 22a and the second curved portion 22b. Alternatively, for example, the first inclined portion 21b in the third embodiment may be provided instead of the first curved portion 22a, or the second inclined portion 21c in the third embodiment may be provided instead of the second curved portion 22b. May be provided.

Example 5
FIG. 5 is a plan view of a cooling device 140 for an electronic device according to a fifth embodiment of the present invention.

  In the electronic apparatus cooling apparatus 140 according to the present embodiment, the same components as those of the electronic apparatus cooling apparatus 120 according to the third embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The electronic device cooling device 140 according to the present embodiment further includes a temperature sensor 23 as compared with the electronic device cooling device 120 according to the third embodiment.

  The temperature sensor 23 is disposed on the leeward side of the electronic device 14, specifically, between the electronic device 14 and the fan 15, and measures the temperature inside the housing 13.

  Furthermore, in the electronic apparatus cooling apparatus 140 according to the present embodiment, a motor (not shown) that drives the driving roller 16 starts driving the driving roller 16 when receiving a driving signal output from the temperature sensor 23. When the stop signal output from the temperature sensor 23 is received, the drive of the drive roller 16 is stopped. That is, the dustproof filter 18 is stopped unless a drive signal is received from the temperature sensor 23.

  If the temperature detected by the temperature sensor 23 rises, the dust filter 18 is clogged, the air flow is deteriorated, and as a result, the temperature is considered to have risen. For this reason, when the temperature detected by the temperature sensor 23 exceeds a predetermined threshold value, the temperature sensor 23 outputs a drive signal to the motor.

  The motor that has received the drive signal from the temperature sensor 23 starts driving the drive roller 16, whereby the dustproof filter 18 starts to circulate in the direction of the arrow S. That is, the dust adhering to the surface of the dustproof filter 18 is scattered from the surface of the dustproof filter 18 by the wind pressure of the air exhausted from the exhaust port 12. Thereby, clogging of the dustproof filter 18 is eliminated.

  When the clogging of the dust filter 18 is eliminated and the air flow is normalized, the temperature inside the housing 13 is lowered. When the temperature detected by the temperature sensor 23 falls below a predetermined threshold, the temperature sensor 23 outputs a stop signal to the motor, and the motor that has received the stop signal from the temperature sensor 23 stops driving the drive roller 16. .

  As described above, according to the electronic apparatus cooling apparatus 140 according to the present embodiment, the dustproof filter 18 starts to circulate according to the temperature inside the housing 13 and the dustproof filter 18 is automatically cleaned. .

  In the present embodiment, the temperature sensor 23 is arranged between the electronic device 14 and the fan 15, but the arrangement location of the temperature sensor 23 is not limited to this. It can be arranged at any position inside the housing 13.

  Furthermore, in this embodiment, the driving roller 16 is driven or stopped depending on whether the temperature detected by the temperature sensor 23 exceeds the threshold value or is below the threshold value. It is also possible to change the rotational speed of the driving roller 16, that is, the rotational speed of the dust filter 18, according to the temperature detected by the sensor 23.

Example 6
FIG. 6 is a plan view of an electronic device cooling apparatus 150 according to a sixth embodiment of the present invention.

  In the electronic apparatus cooling apparatus 150 according to the present embodiment, the same components as those of the electronic apparatus cooling apparatus 120 according to the third embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The electronic device cooling device 150 according to the present embodiment further includes a pressure sensor 24 as compared with the electronic device cooling device 120 according to the third embodiment.

  The pressure sensor 24 is disposed between the electronic device 14 and the dust filter 18 and detects the pressure inside the housing 13.

  Furthermore, in the electronic apparatus cooling apparatus 150 according to the present embodiment, a motor (not shown) that drives the driving roller 16 starts driving the driving roller 16 when receiving a driving signal output from the pressure sensor 24. When the stop signal output from the pressure sensor 24 is received, the drive of the drive roller 16 is stopped. That is, the dust filter 18 is stopped unless a drive signal is received from the pressure sensor 24.

If the pressure detected by the pressure sensor 24 decreases, it is considered that the dust filter 18 is clogged and air does not flow sufficiently. For this reason, when the pressure detected by the pressure sensor 24 falls below a predetermined threshold, the pressure sensor 24 outputs a drive signal to the motor.

  The motor that has received the drive signal from the pressure sensor 24 starts to drive the drive roller 16, whereby the dust filter 18 starts to circulate in the direction of arrow S. That is, the dust adhering to the surface of the dustproof filter 18 is scattered from the surface of the dustproof filter 18 by the wind pressure of the air exhausted from the exhaust port 12. Thereby, clogging of the dustproof filter 18 is eliminated.

When the clogging of the dustproof filter 18 is eliminated and the air flow is normalized, the pressure inside the housing 13 increases . When the pressure detected by the pressure sensor 24 exceeds a predetermined threshold, the pressure sensor 24 outputs a stop signal to the motor, and the motor that has received the stop signal from the pressure sensor 24 stops driving the drive roller 16. .

  As described above, according to the electronic apparatus cooling apparatus 150 according to the present embodiment, the dustproof filter 18 starts to circulate according to the pressure inside the housing 13 and the dustproof filter 18 is automatically cleaned. .

  In the present embodiment, the pressure sensor 24 is disposed between the electronic device 14 and the dust filter 18, but the location of the pressure sensor 24 is not limited to this. It can be arranged at any position inside the housing 13.

  Furthermore, in the present embodiment, the drive roller 16 is driven or stopped depending on whether the pressure detected by the pressure sensor 24 exceeds the threshold value or below the threshold value. It is also possible to change the rotation speed of the driving roller 16, that is, the rotational speed of the dustproof filter 18, according to the pressure detected by the sensor 24.

  The pressure sensor 24 can be applied not only to the third embodiment but also to the first, second and fourth embodiments.

Example 7
FIG. 7 is a plan view of an electronic device cooling apparatus 160 according to a seventh embodiment of the present invention.

  In the electronic apparatus cooling apparatus 160 according to the present embodiment, the same components as those of the electronic apparatus cooling apparatus 120 according to the third embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The electronic device cooling apparatus 160 according to the present embodiment further includes a rotation speed sensor 25 that detects the rotation speed of the fan 15 as compared with the electronic apparatus cooling apparatus 120 according to the third embodiment.

  The rotation speed sensor 25 detects the rotation speed of the fan 15.

  Furthermore, in the electronic apparatus cooling apparatus 160 according to the present embodiment, when a motor (not shown) that drives the driving roller 16 receives the driving signal output from the rotation speed sensor 25, the driving roller 16 is driven. When the stop signal output from the rotation speed sensor 25 is received, the drive roller 16 is stopped. In other words, the dust filter 18 is stopped unless a drive signal is received from the rotation speed sensor 25.

  If the rotational speed of the fan 15 detected by the rotational speed sensor 25 decreases, it is considered that the dustproof filter 18 is clogged and air does not flow sufficiently. For this reason, when the rotational speed of the fan 15 detected by the rotational speed sensor 25 falls below a predetermined threshold value, the rotational speed sensor 25 outputs a drive signal to the motor.

  The motor that has received the drive signal from the rotational speed sensor 25 starts driving the drive roller 16, and thereby the dustproof filter 18 starts rotating in the direction of the arrow S. That is, the dust adhering to the surface of the dustproof filter 18 is scattered from the surface of the dustproof filter 18 by the wind pressure of the air exhausted from the exhaust port 12. Thereby, clogging of the dustproof filter 18 is eliminated.

  When the clogging of the dust filter 18 is eliminated and the air flow is normalized, the rotational speed of the fan 15 increases. When the rotational speed of the fan 15 detected by the rotational speed sensor 25 exceeds a predetermined threshold value, the rotational speed sensor 25 outputs a stop signal to the motor, and the motor receiving the stop signal from the rotational speed sensor 25 is driven. The driving of the roller 16 is stopped.

  As described above, according to the cooling apparatus 160 for an electronic device according to the present embodiment, the dustproof filter 18 starts rotating according to the rotational speed of the fan 15 detected by the rotational speed sensor 25, and the dustproof filter 18 is cleaned. Done automatically.

  Furthermore, in the present embodiment, the drive roller 16 is driven or stopped depending on whether the pressure detected by the rotation speed sensor 25 is equal to or lower than the threshold value or exceeds the threshold value. It is also possible to change the rotational speed of the drive roller 16, that is, the rotational speed of the dust-proof filter 18, according to the rotational speed of the fan 15 detected by the rotational speed sensor 25.

  The rotation speed sensor 25 can be applied not only to the third embodiment but also to the first, second, and fourth embodiments.

  Although the cooling device according to the present invention is intended for electronic devices, the cooling device according to the present invention can be applied not only to electronic devices but also to all devices that generate heat.

It is a top view of the cooling device for electronic devices which concerns on the 1st Example of this invention. It is a top view of the cooling device for electronic devices which concerns on the 2nd Example of this invention. It is a top view of the cooling device for electronic devices which concerns on the 3rd Example of this invention. It is a top view of the cooling device for electronic devices which concerns on the 4th Example of this invention. It is a top view of the cooling device for electronic devices which concerns on the 5th Example of this invention. It is a top view of the cooling device for electronic devices which concerns on the 6th Example of this invention. It is a top view of the cooling device for electronic devices which concerns on the 7th Example of this invention. It is a top view of the conventional filter apparatus.

Explanation of symbols

100 Electronic Device Cooling Device 110 According to the First Example 110 Electronic Device Cooling Device 120 According to the Second Example Electronic Device Cooling Device 130 According to the Third Example 130 Electronic Device According to the Fourth Example Cooling Device 140 Electronic Device Cooling Device 150 According to the Fifth Example Electronic Device Cooling Device 160 According to the Sixth Example Electronic Device Cooling Device 11 According to the Seventh Example 11 Inlet 12 Exhaust 13 Case 14 Electronic device 15 Fan 16 Driving roller 17 Driven roller 18 Dust-proof filter 19 Partition walls 20, 21, 22 Partition plate 23 Temperature sensor 24 Pressure sensor 25 Rotational speed sensor

Claims (8)

The air inlet,
An exhaust port that opens in the same direction as the intake port and is provided adjacent to the intake port;
A fan that sucks outside air through the intake port, exhausts the sucked outside air through the exhaust port, and air-cools the electronic device disposed between the intake port and the exhaust port;
An endless dustproof filter is rotatably spanned between a plurality of rollers including at least one drive roller, and both surfaces of the dustproof filter that travel in opposite directions face the intake port and the exhaust port. A filter unit arranged in
An electronic device cooling device comprising: A housing having the air inlet and the air outlet is formed, and the housing is formed with a partition wall that sets the intake direction and the exhaust direction of the fan in parallel and opposite directions. The cooling device for an electronic device according to claim 1.   A partition plate is provided on the opposite side of the intake port and the exhaust port with respect to the dustproof filter, and further includes a partition plate that physically partitions a space facing the intake port and a space facing the exhaust port. Item 3. The cooling device for an electronic device according to Item 1 or 2.   The cooling device for an electronic device according to claim 3, wherein the partition plate includes an inclined portion that is inclined with respect to both the intake port and the exhaust port.   The cooling device for an electronic device according to claim 3, wherein the partition plate includes a curved portion that is convex with respect to both the intake port and the exhaust port. A temperature sensor for detecting the ambient temperature of the electronic device;
The cooling device for an electronic device according to claim 1, wherein the driving roller is driven when a temperature detected by the temperature sensor exceeds a threshold value. A pressure sensor disposed between the electronic device and the dust filter;
7. The cooling device for an electronic device according to claim 1, wherein the number of rotations of the driving roller is changed in accordance with a pressure detected by the pressure sensor. A rotation speed sensor for detecting the rotation speed of the fan;
The electronic apparatus cooling device according to claim 1, wherein the rotational speed of the driving roller is changed according to the rotational speed detected by the rotational speed sensor.

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