JP6524774B2 - Cooling device and cooling method - Google Patents

Description

  The present invention relates to a cooling device and a cooling method, and to a cooling device and a cooling method capable of uniformly cooling electronic devices.

  In a transmission system for broadcasting etc., in order to obtain a large output, electronic devices such as a power amplifier that generate high temperature are stacked in multiple stages, and this is accommodated in a housing. Since these electronic devices generate high temperatures, they need to be cooled, and an air flow is uniformly sent to these electronic devices for cooling.

  Patent Document 1 discloses a technique of sending an air flow to electronic devices stored and stacked in multiple stages in a housing to cool the electronic device. As shown in FIG. 9, the cooling device for a multistage product electronic device disclosed in Patent Document 1 includes a blower 15, a distribution main flow channel 16, a distribution introduction flow channel 17, a merging introduction flow channel 19, and a merging main flow channel 20. And. A plurality of (four) circuit boards 18 are accommodated in multiple stages in the housing 21, and in each stage, the distribution introduction flow path 17 connected to the distribution main flow path 16 and the merging introduction connected to the merging main flow path 20 There is a flow path 19. The cooling air flow sent from the blower 15 is supplied to each distribution introduction flow path 17 through the distribution main flow path 16 and the circuit board 18 is cooled by the cooling air flow supplied to each distribution introduction flow path 17 Be done. Then, the cooling air flow that has cooled each circuit board 18 is guided to the merging main flow path 20 through each merging introduction flow path 19, and is discharged to the outside of the housing 21.

  The cooling device for multi-stage product electronic devices disclosed in Patent Document 1 has only one blower 15. If the blower 15 breaks down, the circuit board 18 (electronic device) in the housing 21 can not be cooled. In particular, in the case of using a cooling device of an electronic device such as a multistage product electronic device cooling device for a transmission system for broadcasting etc., if the cooling of the electronic device can not be performed, the broadcasting can not be performed and the influence is large. In order to avoid this, it is conceivable to install two fans to provide redundancy.

  For example, as shown in FIG. 10, two blowers shown in FIG. 9 are arranged side by side, the air blowing direction is upward, the left side is used normally (normal system), and the right side is used for normal system failure etc. A cooling device of an electronic device that is supposed to be a backup system is assumed. FIG. 10 is a view showing an example of the cooling device of the electronic device when the device such as the cooling device for the multistage product electronic device shown in FIG. 9 is used for a transmission system for broadcasting and the like. FIG. 10 shows a state where the cooling device of the electronic device uses the blower 23 of a normal system. The lid of the blower 23 of the normal system is opened by the wind force of the cooling air, and the lid of the blower 24 of the spare system is closed. Each blower opens the lid of its own fan, for example by the wind power of the cooling air flow (cooling air) which self sends. The thick arrows are the cooling air flow. The cooling device of the electronic device used in the transmission system for broadcasting etc. is the stacked electronic device 28 in order to equalize the performance of each electronic device 28 installed in each stage and to stabilize the endurance period. Uniform cooling is required. For this reason, a slanting wind guide plate 26 installed for all the stages so as to narrow the flow path of the cooling air toward the upper side, and installed for each stage, the flow of the cooling air (cooling air flow) It is conceivable that the stacked electronic devices 28 are uniformly cooled by the stage air guide plate 27 leading to 28. The stage air guide plate 27 is installed, for example, from the upper left end of the electronic device 28 toward the lower left so as to guide the cooling air into the electronic device 28.

JP, 2014-123766, A

  The cooling device for the electronic device shown in FIG. 10 described above is provided with two fans for redundancy. The cooling air flow from the blower is directed not only in the direction of the distribution flow channel 25 but in the direction of the distribution flow channel 25 only by opening the lid of the fan and blowing it upward. Then, the electronic devices 28 installed in each stage are provided by the diagonal direction air guide plate 26 in which the distribution flow path 25 is narrowed toward the upper side and the stage air guide plate 27 for guiding the cooling air flow to each electronic device 28. To ensure uniform cooling.

  As described above, since the cooling device of the electronic device does not guide the cooling air flow from the blower in the direction of the distribution flow path 25, the flow path from the blower to the distribution flow path 25 is a load of the cooling air flow. As a result, there is a problem that the amount of air flow decreases before the cooling air flow reaches the distribution flow path 25. Further, in the cooling device of the electronic device, in order to uniformly cool the electronic devices 28 in each stage, the stage air guiding plate 27 is installed in each stage, and the cooling air flow is indicated by the air guiding plate 27 for each stage. They are respectively led to the electronic devices 28 of the stages. Therefore, the stage air guide plate 27 itself prevents the flow of the cooling air, and is a load of the cooling air flow. For this reason, there is a problem that the amount of air for cooling the electronic device 28 may decrease toward the upper side.

  An object of the present invention is a cooling device capable of uniformly cooling an object to be cooled without reducing the amount of air for cooling the object to be cooled, even when a plurality of air blowers are provided by solving the above-mentioned problems. It is to provide a cooling method.

  The cooling device according to the present invention comprises: a plurality of air blowing means for outputting an air flow; and a rectifying means for rectifying the air flow of the plurality of air blowing means to lead to substantially the same location; And suction means for guiding the air flow reached to a predetermined cooling target.

  According to the cooling method of the present invention, the air flow is output by the plurality of air blowing means, and the air flow of the plurality of air blowers is rectified so as to be guided to substantially the same place, The air flow introduced and reached is directed to a predetermined cooling target.

  According to the present invention, it is possible to provide a cooling device and a cooling method capable of uniformly cooling an object to be cooled without reducing the amount of air for cooling the object to be cooled even when a plurality of air blowers are provided redundantly. it can.

It is a figure showing an example of the cooling device concerning a 1st embodiment of the present invention. It is a figure showing an example of the cooling device concerning a 2nd embodiment of the present invention. It is a figure which shows the other example of the cooling device which concerns on the 2nd Embodiment of this invention. It is a figure showing an example of the cooling device concerning a 3rd embodiment of the present invention. It is a figure which shows the other example of the cooling device which concerns on the 3rd Embodiment of this invention. It is a figure showing an example of the cooling device concerning a 4th embodiment of the present invention. It is a figure which shows the other example of the cooling device which concerns on the 4th Embodiment of this invention. It is a figure which shows an example of the 1st rectification | straightening member of the cooling device which concerns on this Embodiment. It is the figure which showed the rectification | straightening state of the air flow from the state of a 1st rectification | straightening member, and the air blower from a normal system when the air blower of a normal system operate | moves. FIG. 6 is a diagram showing the state of the first flow straightening member and the rectified state of the air flow from the backup blower when the backup blower is in operation. It is a figure which shows an example at the time of using the air blower of a normal system, and the air blower of a backup system simultaneously. It is a figure which shows the cooling device for multistage product electronic devices in related technology. It is a figure which shows an example of the cooling device of an electronic device at the time of using apparatuses, such as a cooling device for multistage-product electronic devices, for transmission systems, such as a broadcast.

Next, embodiments of the present invention will be described with reference to the drawings.
First Embodiment
FIG. 1 is a view showing an example of a cooling device according to a first embodiment of the present invention.

  The cooling device 1 according to the present embodiment includes a plurality of air blowing means 13, a flow straightening means 5, and an air suction means 2. The plurality of blowers output an air flow. The rectifying means 5 rectifies the air flow of the plurality of blowing means 13 so as to lead it to substantially the same place. The air suction means 2 guides the air flow that has been led to substantially the same place and reached to a predetermined cooling target.

  When the plurality of blowers 13 output an air flow, the rectifying unit 5 rectifies the airflows output by the plurality of blowers 13 so as to lead them to substantially the same place. Then, the air flow introduced to substantially the same place by the suction means 2 is guided to a predetermined cooling target. The object to be cooled is cooled by this air flow.

  As described above, according to the first embodiment of the present invention, the air flows from the plurality of air blowers in the redundant configuration are rectified to be directed to the air suction means and supplied to the air suction means. For this reason, it is possible to suppress a decrease in the air volume (the amount of air flow) reaching the intake means. Then, the air flow is introduced to the object to be cooled, the air flow whose amount of air flow (the amount of air flow) is suppressed from being reduced by the intake means.

For this reason, according to the present embodiment, even in the case where a plurality of air blowers are provided redundantly, it is possible to uniformly cool the object to be cooled with an air flow having a sufficient air volume.
Second Embodiment
FIG. 2A is a view showing an example of a cooling device according to a second embodiment of the present invention. FIG. 2B is a view showing another example of the cooling device according to the second embodiment of the present invention. FIG. 2A is a view showing an example of a cooling device in the case of using the left air blowing means (the first air blowing means 3) of the two units. FIG. 2B is a view showing an example of the cooling device in the case of using the right blowing means (second blowing means 4) of the two units. These drawings are views of the cooling device 1 when a plurality of cooling targets 11 are stacked on a rectangular parallelepiped housing 12 as viewed from the front direction, and are views seen through the plate of the front part of the housing 12 .

  In the second embodiment of the present invention, the plurality of blowers 13 of the cooling device 1 according to the first embodiment are divided into two blowers (first blower 3 and second blower 4). The present invention is more specific to the first embodiment. Mainly differences from the first embodiment will be described.

  The cooling device 1 according to the present embodiment is constituted by a plurality of air blowing means (for example, two units: a first air blowing means 3 and a second air blowing means 4), a flow straightening means 5, and an air suction means 2.

The first blower 3 and the second blower 4 output an air flow. For example, air is sucked from the lower side of the blower and sent upward. The thick arrows in FIGS. 2A and 2B are air flows.
The rectifying means 5 rectifies the air flow of the plurality of blowing means so as to lead it to substantially the same place, here the inlet of the suction means 2.
The intake means 2 guides the air flow that has been led to its own inlet to the predetermined cooling target 11.

  When using the 1st ventilation means 3, as shown to FIG. 2A, the 1st ventilation means 3 ventilates air. Then, the rectifying means 5 rectifies the flow (air flow) of the blown air so as to lead to the inlet of the suction means 2 as shown in FIG. 2A.

Moreover, when using the 2nd ventilation means 4, as shown to FIG. 2B, the 2nd ventilation means 4 ventilates air. Then, the rectifying means 5 rectifies the flow (air flow) of the blown air so as to lead to the inlet of the suction means 2 as shown in FIG. 2B.
Then, the air flow introduced to the entrance of the air intake means 2 is led to the object to be cooled 11 and the object to be cooled 11 is cooled by the air flow.

  As described above, according to the second embodiment of the present invention, the air flows from the plurality of air blowers in the redundant configuration are rectified and supplied to the air suction vehicle so as to be directed toward the air suction vehicle. For this reason, it is possible to suppress a decrease in the air volume (the amount of air flow) reaching the intake means. Then, the air flow is introduced to the object to be cooled, the air flow whose amount of air flow (the amount of air flow) is suppressed from being reduced by the intake means.

For this reason, according to the present embodiment, even in the case where a plurality of air blowers are provided redundantly, it is possible to uniformly cool the object to be cooled with an air flow having a sufficient air volume.
Third Embodiment
FIG. 3A is a view showing an example of a cooling device according to a third embodiment of the present invention. FIG. 3B is a view showing another example of the cooling device according to the third embodiment of the present invention. FIG. 3A is a view showing an example of a cooling device when the left air blower (first air blower 3) of the two units is used. FIG. 3B is a view showing an example of the cooling device when the right air blower (the second air blower 4) of the two units is used. These drawings are views of the cooling device 1 as viewed from the front direction in a case where seven cooling targets (for example, the electronic device 11 and the electronic device 11 hereinafter) are stacked in a rectangular parallelepiped housing 12. It is the figure seen through the board of the front part of case 12 seen.

  In the third embodiment of the present invention, the suction means 2 of the cooling device 1 of the second embodiment is divided into the suction flow path 8 and the air guide plate 9, and the exhaust flow path 10 is added. The embodiment is more specific. Mainly differences from the second embodiment will be described.

  The cooling device 1 according to the present embodiment includes a plurality of blowers (for example, two units: the first blower 3 and the second blower 4), the rectifying unit 5, the intake unit 2, and the exhaust flow path 10 And consists of The intake means 2 is constituted by an intake flow path 8 and a baffle plate 9.

  The cooling device 1 is a device for cooling the electronic device 11 stacked and installed in a plurality of stages in the housing 12. There are two blowers, the first blower 3 and the second blower 4, and the first blower 3 is usually used as a normal system device, and the second blower 4 is a spare system device. It is used at the time of failure of the first air blower 3 or the like.

The first blower 3 and the second blower 4 blow the air. For example, air is sucked from the lower side of the device and sent upward. The thick arrows in FIGS. 3A and 3B are air flows. The rectifying means 5 rectifies the air flow blown from the blower of any of the plurality of blowers so as to lead it to the inlet of the suction means 2.
The intake flow path 8 of the intake means 2 guides the air flow rectified by the rectification means 5 in the upper direction. The air guide plate 9 is installed in the intake flow passage 8 and is installed in an inclined manner so as to narrow the flow passage in the intake flow passage 8 toward the upper side. The exhaust flow path 10 is supplied from the intake flow path 8 and combines and discharges the air flow that has passed through the respective electronic devices 11 stacked in a plurality of stages.

  When using the 1st ventilation means 3, as shown to FIG. 3A, the 1st ventilation means 3 ventilates air. Then, the rectifying means 5 rectifies the flow (air flow) of the blown air so as to lead to the inlet of the suction means 2 as shown in FIG. 3A.

  Moreover, when using the 2nd air blower 4, as shown to FIG. 3B, the 2nd air blower 4 ventilates air. Then, the rectifying means 5 rectifies the flow (air flow) of the blown air so as to lead to the inlet of the suction means 2 as shown in FIG. 3B.

  The intake flow path 8 receives the air flow rectified by the rectification means 5 and guides it in the upper direction.

  The airflow directed toward the upper stage of the intake flow passage 8 gathers toward the electronic device 11 as the flow passage in the intake flow passage 8 is moved to the upper stage side by the baffle plate 9 installed at an angle.

  Then, air flows into the electronic devices 11 stacked in a plurality of stages from the intake flow path 8 to cool the electronic devices 11.

  The air flow that has cooled the electronic devices 11 joins the exhaust flow path 10 and is exhausted from the exhaust flow path 10 to the outside of the housing 12.

  As described above, according to the third embodiment of the present invention, the air flows from the plurality of air blowers of the redundant configuration are rectified to be guided in the direction of the intake flow path and supplied to the intake flow path. For this reason, it is possible to suppress the reduction of the air volume (the amount of air flow) reaching the intake flow path. Furthermore, the air flow gathers to the electronic device side as it goes to the upper stage side by the baffle plate installed in the intake flow path.

For this reason, according to the present embodiment, even when a plurality of blowers are provided in a redundant manner, the electronic devices of each stage can be uniformly cooled with an air flow having a sufficient air volume.
Fourth Embodiment
FIG. 4A is a view showing an example of a cooling device according to a fourth embodiment of the present invention. FIG. 4B is a view showing another example of the cooling device according to the fourth embodiment of the present invention. These drawings are views of the cooling device 1 when seven electronic devices 11 are stacked in a rectangular parallelepiped housing 12 as viewed from the front direction, and are views seen through the plate of the front part of the housing 12 is there.

  In the fourth embodiment of the present invention, the rectifying means 5 of the cooling device 1 of the third embodiment is divided into a first rectifying member 6 and a second rectifying member 7, and the third embodiment is modified. It is more specific. Mainly differences from the third embodiment will be described.

  The cooling device 1 according to the present embodiment includes a plurality of blowers (for example, two units: the first blower 3 and the second blower 4), the rectifying unit 5, the intake unit 2, and the exhaust flow path 10 And consists of The intake means 2 is constituted by an intake flow path 8 and a baffle plate 9.

  The first blower 3 (normal blower) and the second blower 4 (preliminary blower) have openings at the upper side for blowing air, and are arranged side by side so as to be in contact with each other.

  The rectifying means 5 has a first rectifying member 6 and a second rectifying member 7.

  As shown in FIG. 5, the first straightening member 6 has a rectangular flat plate having an end of one side bent upward at a predetermined first angle and having a rotation axis on the other side of the side with respect to the bent side. It is. The first flow straightening member 6 installs the side having the rotation axis of the first flow straightening member 6 in the boundary direction at the boundary between the openings of the first air blower 3 and the second air blower 4. So, it is installed.

  The second flow straightening member 7 stops the rotation of the first flow straightening member 6 as a stopper when the first flow straightening member 6 is rotated about the rotation axis.

  The second rectifying member 7 is a portion of the lower surface of the inner case in which the electronic device 11 is stacked in the depth direction from the front of the case 12 of the cooling device 1 in the space above the opening of the normal type blower 3. It has the shape of a square pole set with the part as one side. The other three sides expand in the direction of the blower 3 of the normal system. These three side surfaces are in contact with a surface including the end portion bent at a predetermined first angle of the first flow straightening member 6 when the rotated first flow straightening member 6 is stopped; A second surface having a first angle with the first surface and in contact with a portion of the flat surface of the first rectifying member 6, and a direction from the second surface toward the inner casing at a predetermined angle It is the third aspect.

  As shown in FIG. 3B, the first flow straightening member 6 blocks the opening of the normal system blower 3 when the blower is not in use.

  In the case where the normal system blower 3 is used, as shown in FIG. 4A, the first rectifying member 6 is rotated about the rotation axis by the wind force of the normal system blower 3 The rotation member 7 is used as a stopper to stop the rotation. Then, at this stopped position, the air flow from the air blower 3 of the normal system is rectified so as to lead the air flow from the rear side of the first rectifying member 6 in the direction of the intake flow path 8.

  In the case of using the preliminary air blower 4, the first rectifying member 6 blocks the opening of the normal air blower 3 as shown in FIG. 4B. Then, the air flow from the preliminary blower 4 is rectified so as to be directed in the direction of the intake flow path 8 by the surface of the first rectification member 6 and the side surface of the second rectification member 7.

  Next, the operation of the cooling device 1 of the present embodiment will be described using FIG. 6, FIG. 7 and FIG.

  FIG. 6 is a diagram showing the state of the first rectifying member and the rectification state of the air flow from the normal system blower when the normal system blower operates. The thick arrow is the air flow. In the figure, when the normal system blower 3 is operated, the first rectifying member 6 is rotated about the rotation axis by the wind force blown by the normal system blower 3 and the second rectifying member 7 is stopped. Indicates that the rotation has stopped. In this stopped position, the plane including the bent end of the first straightening member 6 at a predetermined first angle (118 °) is oriented horizontally. That is, it stands vertically to the opening. Further, the angle of the flat surface of the first flow straightening member 6 from the rotation axis is 28 °. That is, the back surface of the first flow straightening member 6 is inclined at a predetermined angle (28 °) with respect to the opening. The air flow from the blower system 3 of the normal system is led to the back surface of the first flow straightening member 6 thus installed, and is flowed so as to flow in the direction of the intake flow path 8. The first angle (118 °) and the predetermined angle (28 °) are not limited to this angle, and may be appropriately determined and changed by experiments or the like.

  FIG. 7 is a diagram showing the state of the first rectifying member and the rectified state of the air flow from the spare blower when the spare blower is in operation. The thick arrow is the air flow. When the preliminary air blower 4 is operated, the first rectifying member closes the opening of the normal air blower 3. The air flow from the preliminary blower 4 is directed so as to be led by the surface of the first flow straightening member 6 and the surface (three side surfaces) of the second flow straightening member 7 and flow in the direction of the intake flow passage 8. Be done.

  When the normal system blower 3 is used, when the normal system blower 3 operates, the first rectifying member 6 is rotated by the wind from the normal system blower 3 as shown in FIG. The shaft is rotated and the second flow straightening member 7 is used as a stopper to stop the rotation. Then, the air flow from the blower system 3 of the normal system is led to the back surface of the first rectifying member 6 installed as shown in FIG. 6 and rectified so as to flow in the direction of the intake flow path 8.

  On the other hand, when using the blower system 4 of the spare system, as shown in FIG. 7, the first rectifying member 6 closes the opening of the blower system 3 of the normal system. Then, when the preliminary air blower 4 operates, the air flow from the auxiliary air blower 4 is, as shown in FIG. 7, on the surface of the first rectifying member 6 and the side surface of the second rectifying member 7. It is led and rectified so as to flow in the direction of the intake passage 8.

  Then, the intake flow passage 8 receives the air flow rectified by the rectification means 5 and guides it in the upper direction. The airflow directed toward the upper stage of the intake flow passage 8 gathers toward the electronic device 11 as the flow passage in the intake flow passage 8 is moved to the upper stage side by the baffle plate 9 installed at an angle.

  The rectified air flow has a larger air volume because the load in the flow path or the like is smaller than that of the unrectified air flow. Further, the force (air volume) of the air flow weakens toward the upper stage due to the load of the intake passage 8 and gravity, etc., but is collected toward the electronic device 11 toward the upper stage by the air guide plate 9. For this reason, the same amount of air flow is generated in the electronic device 11 on the upper side as in the lower side.

  Next, air flows from the intake passage 8 into the electronic devices 11 stacked in a plurality of stages. The inside of the electronic device 11 is a radiator in which the upper portion is in contact with the circuit portion and the lower portion is in contact with the air flow so that the heat of the circuit portion is dissipated and cooled. The radiator of each electronic device 11 releases heat in contact with the inflowing air flow, and cools the circuit portion of each electronic device 11.

  Then, the air flow that has cooled the circuit portion of each electronic device 11 joins and rises in the exhaust flow path 10, and is exhausted from the exhaust flow path 10 to the outside of the housing 12.

  As described above, according to the fourth embodiment of the present invention, the air flows from the plurality of air blowers of the redundant configuration are rectified to be guided in the direction of the intake flow path and supplied to the intake flow path. For this reason, it is possible to suppress the reduction of the air volume (the amount of air flow) reaching the intake flow path. Furthermore, the air flow gathers to the electronic device side as it goes to the upper stage side by the baffle plate installed in the intake flow path.

  For this reason, according to the present embodiment, even when a plurality of blowers are provided in a redundant manner, the electronic devices of each stage can be uniformly cooled with an air flow having a sufficient air volume.

  In the above description, the blower 3 of the normal system and the blower 4 of the spare system are separately used, but they can be used simultaneously. FIG. 8 is a view showing an example in which the normal system blower 3 and the spare system blower 4 are simultaneously used. In this case, the air blowing capacity of each fan is reduced to half. Then, the dimensions and bending angle of the first flow straightening member 6 and the second flow straightening member 7 shown in FIG. 4 and the like are changed as shown in FIG. The flow is rectified so as to flow in the direction of the intake flow path from the front and back surfaces of the flow straightening member and the surface of the second flow straightening member. By using the blowing capacity in half in this manner, the operable period of each blowing device can be extended.

  Further, in the above description, the stage air guide plate 27 installed and used in all the stages except the uppermost stage in the cooling device of the electronic device shown in FIG. 10 described in the background art is not used at all There is. The stage air guide plate is a plate for guiding an air flow to the electronic device of the stage in which the plate is installed. However, the air volume and uniformity of the air flow flowing in each stage are examined by experiments etc., and the air guide plate 27 for this stage is provided with electronic devices 11 so that the air volume is uniform without dropping the air volume. It may be installed in some of the stages. By doing this, it is possible to uniformly cool the electronic device without reducing the amount of air for cooling the electronic device.

Some or all of the above embodiments may be described as in the following appendices, but is not limited to the following.
(Supplementary Note 1)
A plurality of blowing means for outputting an air flow;
Rectifying means for rectifying the air flow of the plurality of air blowing means to lead it to substantially the same place;
An intake means for guiding the air flow which has been led to the substantially same place and reached to a predetermined cooling target;
A cooling device comprising:
(Supplementary Note 2)
The cooling device according to claim 1, wherein a common portion is provided in the flow path of the air flow from each of the plurality of air blowing means to the same place.
(Supplementary Note 3)
Of the plurality of air blowing means, only one is operating at all times, and the rectifying means operates only the air flow of the air blowing means to the same location via the common portion. The cooling device as set forth in claim 2, wherein the cooling device is provided.
(Supplementary Note 4)
The cooling device as set forth in claim 3, wherein the rectifying means is formed of a plate-like member, and the position is changed according to the air blowing means being operated.
(Supplementary Note 5)
The flow straightening means has a rotating shaft, and is rotated about the rotating shaft by the air flow from the operating blowing means to form a flow path for guiding the air flow to the same location. The cooling device according to appendix 4, characterized in that
(Supplementary Note 6)
The rectifying means is a first rectifying member having the rotating shaft on one side of the plate-like member, and the first rectifying member as a stopper when the first rectifying member is rotated about the rotating shaft. The cooling device according to claim 5, further comprising: a second rectifying member configured to stop rotation of
(Appendix 7)
The object to be cooled is a plurality of stacked heating elements,
The air suction means guides an air flow rectified by the flow straightening means in the direction of the stack, and an air guide plate narrows the flow path in the suction flow path toward the upper layer side of the stack. The cooling device according to claim 6, characterized in that it comprises.
(Supplementary Note 8)
The cooling device as set forth in claim 7, further comprising an exhaust flow path which joins and exhausts the air flow supplied from the intake flow path and passed through the respective heat generating bodies stacked in the plurality of stages.
(Appendix 9)
The plurality of blowers are two blowers of a normal system and a spare system having an opening for blowing air on the upper side, and the side having the rotation axis is installed between the openings of the blowers. Installing the first flow straightening member to
When the blower is not in use, the first rectifying member closes the opening of the normal blower,
In the case of using the normal system blower, the first rectifying member is rotated about the rotation shaft by the wind force blown by the blower and is rotated using the second rectifying member as a stopper. Stopping, at the stopped position, rectifying the air flow from the blower of the normal system to direct the air flow from the back of the first rectifying member toward the intake flow path;
In the case of using the spare system blower, the first flow straightening member closes the opening of the normal flow fan, and the surface of the first flow straightening member and the second flow straightening member To direct the air flow in the direction of the intake channel by means of
The cooling device according to claim 7 or 8, characterized in that
(Supplementary Note 10)
In the case of using the blower system of the normal system, when the first flow straightening member is stopped by using the second flow straightening member as a stopper, the back surface is against the opening when the rotation about the rotation axis is stopped. Will be inclined at a predetermined angle,
Appendix 9. The cooling device according to appendix 9.
(Supplementary Note 11)
The second flow straightening member is installed in the depth direction from the front of the housing on the lower surface of the inner housing on which the heating elements are stacked and installed in multiple tiers in the housing of the cooling device. The three faces have the shape of a quadrangular prism expanded in the direction of the air blower, and the three faces are used to stop the first current-straightening member which has been rotated. A first surface in contact with a surface including an end portion bent at an angle, and a second surface in contact with a portion of the flat surface of the first flow straightening member at the first angle and the first surface; A third surface facing toward the inner casing at a predetermined angle from the second surface;
The cooling device according to any one of appendices 9 or 10, characterized in that
(Supplementary Note 12)
Additional-stage air guide plate installed at a lower part of the plurality of stages in which the plurality of electronic devices are installed, and guiding the air flow, characterized in that it further comprises a step 9, 10 or 11 Cooling device as described.
(Supplementary Note 13)
Air flow is output by a plurality of blowing means,
Straightening the air flow of the plurality of blowers to be directed to substantially the same place;
A cooling method characterized in that the air flow introduced and led to the substantially identical portion is guided to a predetermined cooling target by an intake means.
(Supplementary Note 14)
The cooling method according to claim 13, wherein a common portion exists in the flow path of the air flow from each of the plurality of blowing means to the same place.
(Supplementary Note 15)
Among the plurality of air blowing means, only one is operating at any time, and only the air flow of the operating air blowing means is guided to the same place via the common part. The cooling method according to appendix 14.
(Supplementary Note 16)
The cooling method according to claim 15, wherein only the air flow of the blowing means is guided to the same place through the common portion by a plate-like member whose position is changed according to the blowing means being operated. .
(Supplementary Note 17)
The object to be cooled is a plurality of stacked heating elements,
The cooling method according to claim 16, wherein the suction means directs the rectified air flow in the direction of the stack, and narrows a flow path of the air flow toward the upper layer side of the stack.
(Appendix 18)
The air flow supplied from the suction means and passed through the heat generating bodies stacked in the plurality of stages is combined and exhausted, and the cooling method according to appendix 17.

DESCRIPTION OF SYMBOLS 1 Cooling device 2 Intake means 3 1st ventilation means, 1st ventilation system, ventilation system of normal system 4 2nd ventilation means, 2nd ventilation system, ventilation system of spare system 5 Rectification means 6 1st rectification Members 7 second flow straightening member 8 intake air flow passage 9 air guide plate 10 exhaust flow passage 11 object to be cooled, electronic device 12 housing 13 multiple air blowing means 15 blower 16 distribution main flow path 17 distribution introduction flow path 18 circuit board 19 merge introduction Flow path 20 Joint main flow path 21 Case 23, 24 Blower 25 Distribution flow path 26 Oblique air guide plate 27 stage air guide plate 28 Electronic equipment

Claims (5)

A normal system and a standby system blowing means having an opening for blowing air on the upper side and outputting an air flow;
A first flow straightening member having a rotation axis at one side of the plate-like member, and a second flow straightening member that stops rotation of the first flow straightening member as a stopper when the first flow straightening member is rotated about the rotation axis. Rectifying means for rectifying the air flow of the normal system and the backup system so as to lead the air flow to the same place;
Suction means for guiding the air flow introduced to the same place and reached to a predetermined cooling target;
Equipped with
Installing the first rectifying member so as to install the one side having the rotation shaft between the openings of the normal system and the spare system blower;
When the normal system blower is not in use, the first rectifying member closes the opening of the normal system blower,
In the case of using the normal system blower, the first rectifying member is rotated about the rotation shaft by the wind force blown by the blower and is rotated using the second rectifying member as a stopper. Stopping, at the stopped position, rectifying the air flow from the blower of the normal system to direct the air flow from the first rectifying member toward the suction means by the back surface of the first rectifying member;
In the case of using the spare system blower, the first flow straightening member closes the opening of the normal flow fan, and the surface of the first flow straightening member and the second flow straightening member A cooling device for rectifying the flow of air toward the intake means by means of   The cooling device according to claim 1, wherein a common portion exists in the flow path of the air flow from each of the blowing means of the normal system and the spare system to the same place.   Of the normal system and spare system blowing means, only one is operating at any time, and the rectifying means operates only the air flow of the operating blowing means through the common part. The cooling device according to claim 2, wherein the cooling device leads to the same place. The object to be cooled is a plurality of stacked heating elements,
The air suction means guides an air flow rectified by the flow straightening means in the direction of the stack, and an air guide plate narrows the flow path in the suction flow path toward the upper layer side of the stack. The cooling device according to any one of claims 1 to 3, characterized in that it comprises.   5. The cooling device according to claim 4, further comprising an exhaust flow path for joining and exhausting the air flows supplied from the intake flow path and passing through the respective heat generating bodies stacked in a plurality of stages.

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