JP2014007346A - Cooling air backflow prevention device and electronic equipment device including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling air backflow prevention device which opens and closes a cooling air opening according to attachment/detachment of a cooled body to/from a cooling unit regardless of the intensity of the cooling air thereby unfailingly preventing the backflow of the cooling air, which rectifies the cooling air passing through the cooling air opening, and to provide an electronic equipment device including the cooling air backflow prevention device.SOLUTION: A cooling air backflow prevention device includes at least one open/close doors 34 and 35 which rotate to open to the cooling unit 20 side thereby opening a cooling opening 32 when a blade 10A is attached to a cooling unit 20 and return to an original position to close the cooling opening 32 when the blade 10A is removed from the cooling unit 20. The open/close doors 34 and 35 include rectification parts which rectify cooling air passing through the cooling opening 32.

Description

  The present invention relates to a cooling air backflow prevention device that prevents backflow of cooling air that cools an electronic device or the like (hereinafter simply referred to as a “cooled body”) on which a heat-generating component such as a semiconductor element is mounted, and an electronic device including the same Relates to the device.

  Semiconductor elements mounted on electronic devices, in particular semiconductor elements such as CPUs, have been increasingly densified, and the amount of heat generated has been increasing. This is a well-known fact, and various cooling methods have been proposed to deal with this. As such a cooling system, for example, a forced air cooling system that promotes heat radiation into the air using cooling air from a fan is generally used.

  On the other hand, the shift of mainframes and rack mount servers to blade servers with excellent expandability and versatility has been increasing in recent years. For cooling this blade type server, the forced air cooling method is often used, and the cooling air flows backward due to the space generated when the adjacent blades are removed, so that the cooling performance deteriorates significantly. Servers equipped with a backflow prevention structure have begun to appear. (For example, see Patent Documents 1 to 4).

JP 2006-59448 A JP 2011-170181 A JP 2011-151154 A JP 2011-231954 A

  However, in the disk array device described in Patent Document 1, when the object to be cooled is mounted on the cooling unit, the pins provided on the object to be cooled are provided in the cooling opening of the cooling unit. The shutter is pushed to open the cooling opening, and when the object to be cooled is removed from the cooling unit, the shutter returns to the original position and the cooling opening is closed. The shutter does not have a rectifying function.

  In addition, the cooling structure described in Patent Document 2 is provided at a location common to the ventilation path from the first cooling fan to the body to be cooled and the ventilation path from the second cooling fan to the body to be cooled. A plate-like member for partitioning the cooling air sent out from the cooling fan is provided, and the plate-like member receives the cooling air sent out from the rotating cooling fan when one or both of the cooling fans are rotating. While guiding to the cooled object and closing the ventilation path from the non-rotating cooling fan to the cooled object by the plate-like member, the backflow of the cooling air is prevented. The cooling air is not guided to the object to be cooled according to the attachment / detachment situation. Also, depending on the strength of the cooling air, there is a concern that the plate-like member cannot completely block the ventilation path from the non-rotating cooling fan to the object to be cooled.

  Further, the backflow prevention devices described in Patent Documents 3 and 4 have a plurality of flaps that are opened by the cooling air at the cooling opening of the cooling unit and closed by the dead weight when the cooling air is stopped. Although a plate is provided, the flap does not open or close depending on the state of attachment / detachment of the object to be cooled with respect to the cooling unit. In addition, when the object to be cooled is not mounted on the cooling unit, the cooling opening is only closed in order to prevent backflow of cooling air in the cooling opening. Therefore, in the state where the object to be cooled is mounted on the cooling unit and the cooling air passes through the cooling opening, particularly in the operation state where the object to be cooled is fully mounted, useless parts that do not perform any function. It has become.

  The present invention has been made in view of such circumstances. Regardless of the strength of the cooling air, the cooling air opening is opened and closed in accordance with the attachment / detachment of the object to be cooled to the cooling unit. It is an object of the present invention to provide a cooling air backflow prevention device that can reliably prevent the backflow of air and to rectify the cooling air that passes through the cooling air opening, and an electronic device device including the same.

  In order to achieve this object, the present invention provides a cooling air that is interposed between a cooled object and a cooling unit that generates cooling air and cools the cooled object with cooling air that passes through a cooling opening. A backflow prevention device that rotates when the object to be cooled is mounted on the cooling unit, opens the door toward the cooling unit, opens the cooling opening, and the object to be cooled Is returned to its original position when it is removed from the cooling unit, and has at least one open / close door that closes the cooling opening, and the open / close door receives cooling air that passes through the cooling opening. The present invention provides a cooling air backflow prevention device having a rectifying unit for rectifying.

  The cooling air backflow prevention device according to the present invention and the electronic device apparatus including the cooling air opening / closing device open and close the cooling air opening according to the attachment / detachment of the object to be cooled with respect to the cooling unit regardless of the strength of the cooling air. In addition, the backflow of the cooling air can be reliably prevented, and the cooling air passing through the cooling air opening can be rectified.

It is a disassembled perspective view which shows the outline | summary of the electronic device apparatus which concerns on Embodiment 1 of this invention. It is the perspective view which shows the state which looked at a part of cooling-air backflow prevention apparatus shown in FIG. 1 from the front side. It is a perspective view which shows the state which looked at a part of cooling-air backflow prevention apparatus shown in FIG. 2 from the back side. It is a perspective view which shows the state which looked at the cooling-air backflow prevention apparatus which concerns on Embodiment 1 of this invention from the front side. It is a perspective view which shows the state which looked at the cooling-air backflow prevention apparatus shown in FIG. 4 from the back side. It is a perspective view which shows a part of cooling air backflow prevention apparatus shown in FIG. FIG. 5 is a plan view of the cooling air backflow prevention device shown in FIG. 4. It is a front view which shows the state which closed the opening / closing door of the cooling-air backflow prevention apparatus shown in FIG. It is a front view which shows the state which opened and closed the door of the cooling-air backflow prevention apparatus shown in FIG. It is a side view of the electronic device apparatus which concerns on Embodiment 1 of this invention, and is a figure shown in the state which saw through one part. It is a perspective view which shows the state which looked at the cooling-air backflow prevention apparatus which concerns on Embodiment 2 of this invention from the front side. It is a perspective view which shows a part of cooling air backflow prevention apparatus shown in FIG. It is a top view of the cooling wind backflow prevention apparatus shown in FIG. It is a perspective view which shows the state which closed the opening / closing door of the cooling-air backflow prevention apparatus shown in FIG. It is a front view of the cooling-air backflow prevention apparatus shown in FIG. It is a perspective view which shows the state which opened and closed the door of the cooling-air backflow prevention apparatus shown in FIG. FIG. 17 is a front view of the cooling air backflow prevention device shown in FIG. 16. It is a side view which shows the state which opened the cooling wind backflow prevention apparatus which concerns on other embodiment of this invention fully. It is a side view which shows the state which opened the cooling wind backflow prevention apparatus which concerns on other embodiment of this invention fully. It is a perspective view which shows the state which looked at the cooling-air backflow prevention apparatus which concerns on Embodiment 3 of this invention from the front side. It is a perspective view which shows the state which looked at the cooling-air backflow prevention apparatus shown in FIG. 20 from the back side. FIG. 21 is a plan view of the cooling air backflow prevention device shown in FIG. 20. (A) And (B) is a perspective view which shows a part of cooling air backflow prevention apparatus shown in FIG. It is a perspective view which shows the state which closed the opening / closing door of the cooling-air backflow prevention apparatus shown in FIG. FIG. 25 is a front view of the cooling air backflow prevention device shown in FIG. 24. It is a perspective view which shows the state which opened and closed the door of the cooling-air backflow prevention apparatus shown in FIG. FIG. 27 is a front view of the cooling air backflow prevention device shown in FIG. 26. It is a front view which shows the state which fully opened the cooling wind backflow prevention apparatus which concerns on other embodiment of this invention.

  Next, a cooling air backflow prevention device according to an embodiment of the present invention and an electronic device apparatus including the cooling air backflow prevention device will be described with reference to the drawings. In addition, embodiment described below is the illustration for demonstrating this invention, and this invention is not limited only to these embodiment. Therefore, the present invention can be implemented in various forms without departing from the gist thereof. Further, in each drawing of the embodiment shown below, the thickness, size, enlargement / reduction ratio, etc. of each member are not matched with actual ones for easy understanding.

(Embodiment 1)
FIG. 1 is an exploded perspective view showing an outline of an electronic device apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a perspective view showing a part of the cooling air backflow prevention apparatus shown in FIG. 3 is a perspective view showing a part of the cooling air backflow prevention device shown in FIG. 2 as viewed from the back side, and FIGS. 4 and 5 are front side views of the cooling air backflow prevention device according to Embodiment 1, respectively. FIG. 6 and FIG. 7 are a perspective view and a plan view showing a part of the cooling air backflow prevention device shown in FIG. 4, and FIG. 8 is a cooling air backflow shown in FIG. FIG. 9 is a front view showing a state in which the door of the cooling air backflow prevention device shown in FIG. 4 is fully opened, and FIG. 10 is an electronic device shown in FIG. It is a side view of an apparatus, and is a figure shown in the state which saw through some.

  As shown in FIGS. 1 and 10, in the electronic apparatus device 1 according to the first embodiment, blades (cooled bodies) 10A and 10B on which heat-generating components such as semiconductor elements are mounted and blades 10A and 10B are detachable. When the cooling unit 20 to be mounted and the blades 10A and 10B are mounted on the cooling unit 20, the cooling air backflow prevention device 30 interposed between the blades 10A and 10B and the cooling unit 20, and the cooling unit And a partition plate 60 that is disposed on a surface of the unit 20 on which the blades 10A and 10B are mounted and to which the cooling air backflow prevention device 30 is attached. In addition, the arrow shown in FIG. 10 has shown the flow of the cooling air.

  The blade 10A and the blade 10B are mounted on the cooling unit 20 in a state of being arranged in the vertical direction. In the first embodiment, the case where the blade 10A and the blade 10B are mounted in the vertical direction will be described. However, the blade 10A and the blade 10B are mounted in the cooling unit 20 in a state in which they are aligned in the left-right direction (horizontal direction). May be.

  As shown in FIG. 10, the cooling unit 20 is disposed on the cooling fan 21 that generates cooling air, the noise buffer 22 disposed on the downstream side of the cooling fan 21, and the upstream side of the cooling fan 21. The rectifying grid 23 is provided.

  The cooling air backflow prevention device 30 includes a frame 31 fixed to the partition plate 60, an opening / closing door 34 and 35 that rotate about a shaft 33 and opens and closes the cooling opening 32 of the frame 31, and an opening / closing door. An opening / closing mechanism 40 that opens and closes 34 and 35 is provided. As shown in FIGS. 1 to 3, the cooling air backflow prevention device 30 is provided for each of the blades 10 </ b> A and 10 </ b> B. However, in the first embodiment, the blade 10 </ b> A is easy to understand. The cooling-air backflow prevention device 30 to which is mounted will be mainly described.

  The frame 31 includes an upper frame 31A, a lower frame 31B, a left frame 31C and a right frame 31D that connect both ends of each of the upper frame 31A and the lower frame 31B, and the upper frame 31A, the lower frame 31B, An internal space defined by the left frame 31C and the right frame 31D is a cooling opening 32 that is a passage for cooling air. The upper frame 31A, the left frame 31C, and the right frame 31D are each provided with a fixing portion 36 for fixing the frame 31 to the partition plate 60. The frame 31 is fixed to the partition plate 60 so that the cooling opening 32 communicates with the opening 61 formed in the partition plate 60.

  An opening / closing mechanism attachment portion 37 for attaching the opening / closing mechanism 40 is formed on the lower frame 31B. The opening / closing mechanism mounting portion 37 extends toward the cooling unit 20 in order to slidably hold one end portion along the sliding direction of the opening / closing starting point plate 41 of the opening / closing mechanism 40 described in detail later. The holding rail 37 </ b> A and a holding rail 37 </ b> B extending toward the cooling unit 20 are provided to hold the other end. The holding rails 37A and 37B are respectively formed with ribs 38A and 38B that engage with recesses 41A and 41B formed along the sliding direction at both ends along the sliding direction of the opening / closing starting point plate 41. Yes.

  In addition, both ends of a shaft 33 are attached to substantially the center of the upper frame 31A and the lower frame 31B, and two open / close doors 34 and 35 are attached to the shaft 33 so as to be rotatable about the shaft 33 as a fulcrum. It has been. That is, the wing-shaped portions 34A and 35A in which through holes through which the shaft 33 passes are formed at the end portions of the opening and closing doors 34 and 35 on the central portion side of the frame body 31 when arranged on the frame body 31. As will be described in detail later, the open / close doors 34 and 35 are rotated about the shaft 33 as a fulcrum by the operation of the open / close mechanism 40 when the blade 10A is mounted, and are directed toward the cooling unit. To open the cooling opening 32 (see FIGS. 4, 5 and 7). When the blade 10A is removed, it returns to its original position and closes the cooling opening 32. .

  The wing-shaped portions 34A and 35A have a configuration in which hollow cylindrical portions (four in the first embodiment) are arranged in parallel in the vertical direction with a space between each other. (Linear shape) becomes a blade shape, and a rectifying effect on the cooling air passing through the cooling opening 32 can be exhibited. As shown in FIGS. 1 to 5, 8, and 9, the open / close doors 34 and 35 have their wing-shaped portions when the shaft 33 penetrates the wing-shaped portions 34 </ b> A and 35 </ b> A that are shaft holding portions. Are arranged alternately.

  The opening / closing mechanism 40 includes an opening / closing starting point plate 41 slidably disposed on the opening / closing mechanism attaching portion 37 of the lower frame 31B, a spring 42 for urging the opening / closing mechanism attaching portion 37 in the direction of the blade 10A, and the opening / closing door 34. And 35 and a connecting shaft 43 for connecting the connecting members 43 and 44 to the opening / closing mechanism mounting portion 37 so as to be rotatable.

  As shown in FIGS. 3 to 5 and 7, the opening / closing starting point plate 41 includes a starting point plate main body 51 slidably inserted into a recess 39 formed in a substantially central portion of the lower frame 31 </ b> B, and a starting point plate main body. 51 is formed at the end portion on the side where the blade 10A is mounted, and is slid at both ends along the sliding direction of the starting plate main body 51 and the contact portion 52 with which the blade 10A contacts when the blade 10A is mounted. Concave portions 41A and 41B formed along the moving direction are provided. An elongated hole 53 extending in the sliding direction of the opening / closing starting point plate 41 is formed in the starting point plate main body 51, and a shaft 33 is inserted into the elongated hole 53. Further, ribs 38A and 38B of the lower frame 31B are inserted into the recesses 41A and 41B, and the movement (sliding) of the opening / closing starting point plate 41 is guided by these ribs 38A and 38B. Yes.

  3 and 5, the spring 42 has one end fixed to the lower frame 31B and the other end fixed to the starting plate main body 51. When the blade 10A is mounted, the contact portion 52 is When the opening / closing starting point plate 41 is slid toward the cooling unit 20 by being pressed by the blade 10A, it extends against the urging force (see FIGS. 3 and 5), and when the blade 10A is removed, the attachment The opening / closing starting point plate 41 is returned to the original position by contracting by the force.

  One end of the connecting member 43 is pivotally attached to the lower end of the open / close door 34 by a shaft (not shown), and the other end is rotated by the connecting shaft 45 at the substantially central portion of the cooling plate 20 end of the starting plate main body 51. Installed as possible. One end of the connecting member 44 is rotatably attached to the lower end of the opening / closing door 35 by a shaft (not shown), and the other end is connected to the cooling unit 20 side end portion of the starting plate main body 51 by a connecting shaft 45. The connecting member 43 is pivotably attached.

Closing mechanism with this configuration 40, when the blade 10A is mounted, the contact portion 52 is pressed in the direction of arrow X ₁ (direction in which the cooling unit 20 side) shown in FIG. 7 by the blade 10A , opening and closing start plate 41 slides in the direction of arrow _{X 1.} With this operation, the connecting members 43 and 44 rotate while interlocking with the connecting shaft 45 as a fulcrum so that the angle α (see FIG. 7) between them becomes smaller. By this operation, the coupling member 43 rotates the door 34 the shaft 33 as a fulcrum in the arrow Y ₁ direction shown in FIG. 7, the connecting member 44 shows the door 35 in Figure 7 the shaft 33 as a fulcrum arrow rotating the Z ₁ direction. By this operation, door 34 and 35 opens toward the direction of arrow X _1, opening the cooling openings 32. When the blade 10A is completely attached, as shown in FIGS. 3 and 9, only the wing-shaped portions 34A and 35A are arranged in the substantially central portion of the cooling opening 32, and the cooling is performed. The opening area of the opening 32 for use can be increased. Therefore, when the blade 10A is mounted, the cooling air passes through the cooling opening 32 as shown by the arrows in FIG. 2, and the blade 10A can be efficiently cooled.

  Here, in the conventional cooling air backflow prevention device, the cooling air passing through the cooling opening is likely to be disturbed by the influence of the contraction or expansion flow, which causes an increase in pressure loss, an increase in noise, and a deterioration in cooling performance. It was. Therefore, in order to rectify the turbulence of the cooling air, a method of improving by installing a rectifying grid and a noise buffer material in the cooling unit has been taken.

  On the other hand, in the cooling air backflow prevention device 30 according to the present application, as described above, the blade shape portions 34A and 35A are located at the substantially central portion of the cooling opening 32, and the streamline shape (that is, the blade Therefore, the effect of rectifying the cooling air passing through the cooling opening 32 can be exhibited. Therefore, since the pressure loss and noise can be reduced, the length of the noise cushioning material 22 and the rectifying grid 23 provided in the cooling unit 20 in the ventilation direction is made shorter than before, or It is not necessary to provide the noise buffer material 22 and the rectifying grid 23, and it is possible to achieve downsizing.

On the other hand, when removing the blade 10A, the pressing is released against the abutting portion 52 of the blade 10A, by the biasing force of the spring 42, opening and closing start plate 41 is returned to the direction of arrow X ₂ shown in FIG. Along with this operation, the connecting members 43 and 44 rotate while interlocking with the connecting shaft 45 as a fulcrum so that the angle α (see FIG. 7) between them increases. By this operation, the coupling member 43 rotates the door 34 the shaft 33 as a fulcrum in the arrow Y ₂ direction shown in FIG. 7, the connecting member 44 shows the door 35 in Figure 7 the shaft 33 as a fulcrum arrow It rotates in the Z ₂ direction. By this operation, door 34 and 35, closed toward the direction of arrow X _2, closes the cooling openings 32. When the blade 10A is completely removed, the cooling opening 32 is almost completely closed, as shown in FIGS. At this time, in the direction of arrow X ₁ side of the edge axis 33 defines a long hole 53 formed in the starting plate body 51 abuts, for opening and closing start plate 41 stops sliding in the direction of arrow X _2.

  As described above, when the blade 10A is removed (the blade 10A is not attached), the cooling opening 32 is closed by the open / close doors 34 and 35, so that the cooling air is supplied to the cooling opening 32. Never pass through. Therefore, it is possible to prevent the cooling air from flowing back to the blade 10B when the blade 10A is detached and the blade 10B is mounted.

  In the first embodiment, the case where the two blades 10A and 10B are detachably mounted has been described. However, the present invention is not limited to this, and the number and location of the blades can be arbitrarily set as desired. .

  In the first embodiment, the opening and closing doors 34 and 35 are formed with the cylindrical blade shape portions 34A and 35A to rectify the cooling air. However, the present invention is not limited to this, and the blade shape portions 34A and 35A are cooled. Any other wing shape may be used as long as it can rectify the wind.

(Embodiment 2)
Next, a cooling air backflow prevention device according to Embodiment 2 of the present invention will be described with reference to the drawings. 11 is a perspective view showing a state of the cooling air backflow prevention device according to the second embodiment when viewed from the front side, FIG. 12 is a perspective view showing a part of the cooling air backflow prevention device shown in FIG. 11, and FIG. 11 is a plan view of the cooling air backflow prevention device shown in FIG. 11. FIGS. 14 and 15 are a perspective view and a front view showing a state in which the open / close door of the cooling air backflow prevention device shown in FIG. 11 is closed, and FIGS. These are the perspective view and front view which show the state which opened and closed the door of the cooling-air backflow prevention apparatus shown in FIG. In the second embodiment, the same members as those in the cooling air backflow prevention device described in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 11 to 17, the main difference of the cooling air backflow prevention device 130 according to the second embodiment from the cooling air backflow prevention device 30 according to the first embodiment is that the opening and closing doors 34 and 35 are provided with blade-shaped portions. 71 and 72 are provided.

  That is, as shown in FIGS. 11 and 13 to 17, four wing-shaped portions 71 are vertically arranged on the surface of the open / close door 34 on the side where the blade 10 </ b> A is mounted, spaced apart from each other. It is installed. These blade-shaped portions 71 are arranged so as to be substantially horizontal with respect to the cooling air passage direction (that is, the blade shape along the flow direction of the cooling air), and have a substantially fan-shaped blade shape. When the open / close door 34 is closed, the portion located on the left frame 31C side is configured to be slightly thicker.

  As shown in FIGS. 11 to 17, four blade shape portions 72 are vertically arranged on the surface of the opening / closing door 35 on the side where the blade 10 </ b> A is mounted. Yes. These blade-shaped portions 72 are disposed so as to be substantially horizontal (that is, the blade shape along the flow direction of the cooling air) with respect to the cooling air passage direction, and have a substantially fan-shaped blade shape. When the open / close door 35 is closed, the portion located on the right frame 31D side is configured to be slightly thicker.

  The cooling air backflow prevention device 130 having this configuration operates in the same manner as the cooling air backflow prevention device 30 according to the first embodiment. When the blade 10A is removed (the blade 10A is not attached), the cooling air backflow prevention device 130 is cooled. Since the opening portion 32 is closed by the open / close doors 34 and 35, the cooling air does not pass through the cooling opening portion 32 as shown by arrows in FIG. Therefore, it is possible to prevent the cooling air from flowing back to the blade 10B when the blade 10A is detached and the blade 10B is mounted.

  On the other hand, when the blade 10A is mounted, the open / close doors 34 and 35 open to open the cooling opening 32, and the cooling air passes through the cooling opening 32 as shown by arrows in FIG. At this time, since the wing-shaped portions 71 and 72 are provided on the opening and closing doors 34 and 35, a larger rectification effect can be realized for the cooling air passing through the cooling opening 32. In addition, by using a metal material for the wing shape portions 71 and 72, a radio wave shield can be realized. Therefore, it is not necessary to make the length of the noise cushioning material 22 and the rectifying grid 23 provided in the cooling unit 20 in the ventilation direction shorter than before, or it is not necessary to arrange the noise cushioning material 22 and the rectifying grid 23, and the size is small. Can be achieved.

  The blade shape of the blade shape portions 71 and 72 is not particularly limited as long as the cooling air can be rectified. For example, as shown in FIG. 18, the open / close doors 34 and 35 are closed. When the doors 34 and 35 are closed, as shown in FIG. 19, the left frame 31C and the right frame 31D are moved toward the left frame 31C and the right frame 31D. An optimum shape can be selected as desired, such as a shape in which each portion is slightly thinned, a streamline shape, a linear shape, or an angled (tapered) shape.

  In addition, the number, location, size, and the like of the blade shape portions 71 and 72 can be appropriately determined according to the positional relationship of the cooling opening 32, the blade 10A, the cooling unit 20, and the like.

(Embodiment 3)
Next, a cooling air backflow prevention device according to Embodiment 3 of the present invention will be described with reference to the drawings. 20 and 21 are perspective views showing the cooling air backflow prevention device according to the third embodiment when viewed from the front side and the back side, respectively, and FIG. 22 is a plan view of the cooling air backflow prevention device shown in FIG. 23 is a perspective view showing a part of the cooling air backflow prevention device shown in FIG. 20, and FIGS. 24 and 25 are a perspective view and a front view showing a state in which the open / close door of the cooling air backflow prevention device shown in FIG. 20 is closed. 26, 27 and 27 are a perspective view and a front view showing a state in which the open / close door of the cooling air backflow prevention device shown in FIG. 20 is fully opened. In the third embodiment, the same members as those in the cooling air backflow prevention device described in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 20 to 27, the cooling air backflow prevention device 230 according to the third embodiment rotates around the frame body 231 fixed to the partition plate 60 and the shafts 233, 234, 235, and 236 as fulcrums. The opening / closing doors 134, 135, 136 and 137 for opening and closing the cooling opening 232 of the frame 231 and the opening / closing mechanism 240 for opening and closing the opening / closing doors 134, 135, 136 and 137 are provided.

  The frame body 231 includes an upper frame 231A, a lower frame 231B, a left frame 231C and a right frame 231D that connect both ends of the upper frame 231A and the lower frame 231B, and the upper frame 231A, the lower frame 231B, An internal space defined by the left frame 231C and the right frame 231D is a cooling opening 232 that is a passage for cooling air. Similar to the frame 31 according to the first embodiment, the frame 231 is fixed to the partition plate 60 so that the cooling opening 232 communicates with the opening 61 formed in the partition plate 60. .

  An opening / closing mechanism attaching portion 237 for attaching the opening / closing mechanism 240 is formed on the left frame 231C. The opening / closing mechanism attaching portion 237 is slidably inserted with an opening / closing starting point plate 241 of an opening / closing mechanism 240 described in detail later.

  Further, both ends of the shafts 233, 234, 235, and 236 are attached to the upper frame 231A and the lower frame 231B at substantially equal intervals, and the opening / closing doors 134 to 137 are respectively connected to the shafts 233 to 236. Are attached so that each can be rotated. Portions through which the shafts 233 to 236 of the open / close doors 134 to 137 pass become wing-shaped portions 134A, 135A, 136A, and 137A having a hollow cylindrical shape (that is, streamline shape), and cooling that passes through the cooling opening 232 A rectifying effect against wind can be exhibited. As will be described in detail later, when the blade 10A is mounted, the open / close doors 134 to 137 are rotated about the shafts 233 to 236 as fulcrums by the operation of the open / close mechanism 240 toward the cooling unit. The cooling opening 232 is opened to return to the original position when the blade 10A is removed, and the cooling opening 232 is closed.

  The ends opposite to the ends supported by the shafts 233 to 236 of the opening and closing doors 134 to 137 are supported by connecting shafts 243, 244, 245 and 246 of the opening and closing mechanism 240 described in detail later. Both ends of each of the connecting shafts 243 to 246 are respectively attached to connecting members 143 and 144 of the opening / closing mechanism 240. Moreover, as shown in FIG.21 and FIG.23 (A), the opening / closing door 134 is formed with the recessed part 146 for positioning the connection member 145 of the opening / closing mechanism 240.

  Further, four wing-shaped portions 171 are arranged in the vertical direction on each surface of the opening / closing door 134 on the side where the blade 10A is mounted. Similarly, the wing-shaped portions 171 are disposed on the open / close doors 135, 136, and 137. These blade-shaped portions 171 are arranged so as to be substantially horizontal (that is, the blade shape along the flow direction of the cooling air) with respect to the cooling air passage direction, have a substantially fan-shaped blade shape, and are used for cooling. The cooling air passing through the opening 232 is rectified.

  The opening / closing mechanism 240 includes an opening / closing starting point plate 241 slidably inserted into the opening / closing mechanism attaching portion 237 of the left frame 231C, a spring 42 for urging the opening / closing mechanism attaching portion 237 in the direction of the blade 10A, and the opening / closing doors 134˜. Connecting members 143 and 144 for connecting 137, connecting shafts 243 to 246 for pivotally attaching the opening and closing doors 134 to 137 to the connecting members 143 and 144, and connecting members for connecting the opening / closing starting point plate 241 and the connecting shaft 243. 145.

  As shown in FIGS. 21 and 22, the opening / closing starting point plate 241 is mounted with a starting point plate main body 251 slidably inserted into the opening / closing mechanism mounting portion 237 of the left frame 231C and the blade 10A of the starting point plate main body 251. An abutting portion 52 formed at the end of the starting point plate, a spring fixing portion 252 formed at an end opposite to the abutting portion 52 of the starting point plate main body 251, and an abutting portion 52 of the starting point plate main body 251. And a connecting member fixing portion 253 formed at the tip on the opposite side.

  As shown in FIGS. 21 and 22 in particular, the spring 42 has one end fixed to the left frame 231C and the other end fixed to the spring fixing portion 252 of the opening / closing starting point plate 241, and when the blade 10A is mounted. When the contact portion 52 is pressed by the blade 10A and the opening / closing starting point plate 241 slides toward the cooling unit 20, it extends against the urging force, and when the blade 10A is removed, the urging force The opening / closing start point plate 241 is returned to the original position.

  The upper ends of the connecting shafts 243 to 246 are attached to the connecting member 143 at intervals, and the lower ends of the connecting shafts 243 to 246 are attached to the connecting member 144 at intervals. As will be described in detail later, according to the positions of the connecting members 143 and 144, the open / close doors 134 to 137 rotate about the shafts 233 to 236, respectively, and the open / close doors 134 to 137 are cooled according to this rotation. The opening 232 for use is opened and closed.

  One end of the connecting member 145 is rotatably connected to the connecting member fixing portion 253 of the starting plate main body 251 by a shaft (not shown), and the other end is rotated to the connecting shaft 243 located in the recess 146 of the opening / closing door 134. Connected as possible.

Closing mechanism 240 having the above-described configuration, when the blade 10A is mounted, the contact portion 52 is pressed in the direction of arrow X ₁ (direction in which the cooling unit 20 side) shown in FIG. 22 by the blade 10A , opening and closing start plate 241 slides in the direction of arrow _{X 1.} Then, along with this operation, the coupling member 145 moves the connecting member 143 and 144 in the direction of arrow _{X 1.} By this operation, the connecting members 143 and 144, while interlocking the door 134 to 137 of the shaft 233 to 236 as a fulcrum, is rotated in the arrow _{Y 1} direction shown in FIG. 22. By this operation, the opening and closing door 134 to 137 is opened toward the direction of arrow _{X 1,} opening the cooling opening 232.

  When the blade 10A is completely attached, as shown in FIGS. 26 and 27, the cooling opening 232 is arranged only in the lattice shape formed by the blade shape portion 171 and the blade shape portions 134A to 137A. Thus, the opening area of the cooling opening 232 can be increased, and when the blade 10A is mounted, the cooling air passes through the cooling opening 32 as shown by the arrows in FIG. Thus, the blade 10A can be efficiently cooled. Moreover, the rectification effect of the cooling air and the radio wave shielding can be further improved by the lattice shape. Therefore, since the pressure loss and noise can be reduced, the length of the noise cushioning material 22 and the rectifying grid 23 provided in the cooling unit 20 in the ventilation direction is made shorter than before, or It is not necessary to provide the noise buffer material 22 and the rectifying grid 23, and it is possible to achieve downsizing. The grid shape can improve the radio wave shielding performance as the grid size is smaller.

On the other hand, when removing the blade 10A, the pressing is released against the abutting portion 52 of the blade 10A, by the biasing force of the spring 42, the opening and closing start plate 241 is returned to the direction of arrow _{X 2} shown in FIG. 22. Along with this operation, the coupling member 145 slides in the direction of arrow _{X 2,} the connecting member 145 moves the connecting member 143 and 144 in direction of arrow _{X 2.} By this operation, the connecting members 143 and 144, while interlocking the door 134 to 137 of the shaft 233 to 236 as a fulcrum, is rotated in the arrow _{Y 2} direction shown in FIG. 22. By this operation, the opening and closing door 134 to 137 is closed toward the direction of arrow _{X 2,} closes the cooling opening 232. When the blade 10A is completely removed, the cooling opening 232 is almost completely closed, as shown in FIGS.

  As described above, when the blade 10A is removed (the blade 10A is not attached), the cooling opening 232 is closed by the open / close doors 134 to 137, and therefore, as shown by arrows in FIG. The cooling air does not pass through the cooling opening 232. Therefore, it is possible to prevent the cooling air from flowing back to the blade 10B when the blade 10A is detached and the blade 10B is mounted.

  Further, the cooling air backflow prevention device 230 according to the third embodiment can further reduce the depth size (size in the blade mounting direction) by disposing the four open / close doors 134 to 137.

  The number, location, size, and the like of the wing-shaped portion 171 and the open / close doors 134 to 137 can be appropriately determined according to the positional relationship of the cooling opening 232, the blade 10A, the cooling unit 20, and the like. That is, by selecting the conditions for the door and the blade shape portion to be optimal, it is possible to adapt to the operation state of the electronic device, the required cooling performance, the radio wave shielding level, and the like.

  As another embodiment, for example, as shown in FIG. 28, a gasket 250 may be disposed around the wing-shaped portions 134A to 137A. By doing in this way, the airtightness of the opening-and-closing doors 134-137 can further be improved.

  DESCRIPTION OF SYMBOLS 1 ... Electronic device apparatus, 10A, 10B ... Blade, 20 ... Cooling unit, 30, 130, 230 ... Cooling air backflow prevention device, 31, 231 ... Frame body, 32, 232 ... Cooling opening, 33, 233, 234, 235, 236 ... shaft, 34, 35, 134, 135, 136, 137 ... open / close door, 34A, 35A, 71, 72, 134A, 135A, 136A, 137A, 171 ... wing shape part, 40, 240 ... open / close Mechanism, 41, 241 ... Opening / closing start plate, 42 ... Spring, 43, 44, 143, 144, 145 ... Connecting member, 45, 243, 244, 245, 246 ... Connecting shaft,

Claims (10)

A cooling air backflow prevention device interposed between a cooled object and a cooling unit that generates cooling air and cools the cooled object with cooling air passing through a cooling opening,
When the object to be cooled is mounted on the cooling unit, it rotates, opens the door toward the cooling unit, opens the cooling opening, and the object to be cooled is removed from the cooling unit. At least one door that closes the cooling opening and returns to its original position when removed;
The open / close door is a cooling air backflow prevention device having a rectifying unit that rectifies cooling air passing through the cooling opening. Having two doors and a shaft that rotatably supports the two doors;
The shaft is located at a substantially central portion of the cooling opening,
The two doors are opened and closed with the shaft as a fulcrum, and a wing shape portion having a wing shape is formed on a portion pivotally supported by the shaft,
The cooling air backflow prevention device according to claim 1, wherein the rectification unit is constituted by the blade shape portion.   The cooling air backflow prevention device according to claim 2, further comprising an interlocking member that interlocks and opens the two doors. A plurality of the opening and closing doors, and each shaft that rotatably supports each opening and closing door,
Each of the open / close doors opens and closes with each of the shafts as a fulcrum, and forms a wing shape portion having a wing shape in a portion supported by the shaft,
The cooling air backflow prevention device according to claim 1, wherein the rectification unit is constituted by the blade shape portion.   The cooling air backflow prevention device according to claim 4, further comprising an interlocking member that interlocks and opens and closes the plurality of doors. A wing shape portion having a wing shape is disposed on a surface of the open / close door facing the cooled body when the open / close door is closed,
The cooling air backflow prevention device according to claim 1, wherein the rectification unit is constituted by the blade shape portion.   The cooling air backflow prevention device according to claim 6, wherein a plurality of the blade shape portions are arranged at intervals.   The cooling air backflow prevention device according to claim 7, wherein the plurality of blade-shaped portions are arranged in a lattice shape.   The cooling air backflow prevention device according to claim 6, wherein the opening and closing door and the blade-shaped portion are formed of a metal material. A body to be cooled;
A cooling unit having a cooling opening and generating cooling air and cooling the object to be cooled by cooling air passing through the cooling opening;
The cooling air backflow prevention device according to any one of claims 1 to 9, wherein the cooling air backflow prevention device is interposed between the body to be cooled and the unit for cooling body.
An electronic device device comprising:

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