JP4638841B2 - Rack mount electronic device system - Google Patents

Description

  The present invention relates to a noise reduction technique for a rack mount electronic device system (rack mount server system).

  It is a well-known fact that semiconductors used in electronic devices, especially semiconductors represented by CPUs of information processing devices, have been evolving rapidly, and the amount of heat generation and density has been increasing. As the amount of heat generated by the device increases, the noise value of the device tends to increase due to the increase in the number of fans mounted for cooling or the number of rotations.

  In recent years, the rack mount method has become mainstream in the system configuration, storage, and installation of information processing apparatuses such as servers. The rack-mount system is a system in which devices with each function are stacked in a rack cabinet that is formed based on specific standards. Each device can be freely selected and arranged, and the system configuration is flexible and expanded. There is an advantage that the entire system can be reduced in size.

  In particular, 19-inch rack cabinets stipulated in the IEC standard (International Electrical Commission) / EIA standard (The Electrical Industries Association) are the mainstream for servers, and the left and right front dimensions of the columns for mounting the device are 451 mm, The height dimension for mounting is defined in units of 1U (1EIA) = 44.45 mm.

  However, as described above, the noise of the unit itself is on the rise, so the noise of the entire rack system when it is mounted in multiple stages in the rack cabinet becomes very large, and it is used in a room other than a specialized room for a controlled computer room. Is in a difficult situation.

  On the other hand, with regard to noise reduction when a multi-stage apparatus is mounted on a rack cabinet, for example, as described in Japanese Patent Application Laid-Open No. 2000-277756 (Patent Document 1), a dedicated air duct is provided in the rack, and the rack cabinet It is known to improve the exhaust efficiency of the inside, and to reduce noise by attaching a sound absorbing material in the air duct.

Japanese Unexamined Patent Publication No. 2000-277756

  However, the technique described in Patent Document 1 is difficult to apply to existing rack cabinets and does not have enough space for using a sound absorbing material, resulting in a poor noise reduction effect. In addition, since it is a dedicated rack cabinet, it is impossible to deal with existing rack cabinets.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described problems by providing a rack mount type electronic device equipped with an electronic device (information processing device) such as a server that can reduce noise without modifying an existing rack cabinet. To provide an equipment system.

In order to achieve the above object, the present invention provides a rack mount electronic device system in which an electronic device is mounted in a rack cabinet, and has an air flow path that rises by sucking exhaust air from the back of the electronic device. An intake duct portion having a sound absorbing material mounted on the inner wall surface, a forward air flow path that communicates with the intake duct portion and flows from the back side to the front side, and a return air that exhausts by flowing from the front side to the back side And a noise reduction duct system having an exhaust duct portion having an inner wall mounted with a sound absorbing material, wherein the intake duct portion is attached to a back position of the electronic device, and the exhaust duct portion is attached to the rack cabinet. mounted in the upper, the air intake duct portion, capable constitute sequentially added in accordance with the number and size of the server to be mounted, connects the with the configured air intake duct portion the exhaust duct portion It can be characterized in that it constitutes.

  Further, the present invention is characterized in that, in the noise reduction duct system, a meandering structure is taken as an air flow path inside the exhaust duct.

Further, the present invention is a rack mount type electronic device system in which an electronic device is mounted on a rack cabinet, and has an air flow path that rises by sucking exhaust air from the back surface of the electronic device, and a sound absorbing material on an inner wall surface An intake duct portion, a forward air passage that communicates with the intake duct portion and flows from the back side to the front side, and a return air passage that exhausts by flowing from the front side to the back side. In addition, the noise reduction duct system independent of the rack cabinet having the exhaust duct portion with the sound absorbing material mounted on the inner wall surface is mounted on the existing rack cabinet, and the intake duct portion is adjusted to the number and size of servers to be mounted. In addition, it is configured to be able to be sequentially added together, and the configured intake duct portion and the exhaust duct portion are configured to be connectable .

  Further, the present invention is a rack mount type electronic device system in which electronic devices are mounted in a rack cabinet, and is configured to additionally mount a noise reduction duct system independent of the rack cabinet in an existing rack cabinet. It is characterized in that noise reduction can be achieved without changing the structure of the rack cabinet.

  According to the present invention, in a rack mount server system equipped with an electronic device (information processing apparatus) such as a server, noise can be reduced without modifying an existing rack cabinet.

  Further, according to the present invention, for example, by adding an attachment of an intake duct, it is possible to increase the number sequentially according to the number and size of servers mounted in the rack.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a rack mount type electronic device system (rack mount server system) provided with a noise reduction duct system according to the present invention will be described with reference to the drawings.

  FIG. 1 is a full perspective view of a silencer duct system according to the present invention. FIG. 2 is a side view showing an embodiment in a state in which a noise reduction duct system 20 having an intake duct portion and an exhaust duct portion is attached (connected) to a rack mount type electronic device system. An electronic device (hereinafter referred to as a server) 11 such as an information processing apparatus in a rack-mount type electronic device system has a blower inside, and sucks air from the front surface and exhausts air from the back surface. The noise reduction duct system 20 is provided on the back surface of the server 11 in the rack mount type electronic device system, and receives the exhaust air from the server 11, and is connected to the air intake duct portion 1 to connect the rack mount type electronic system. An exhaust duct section 2 mounted on the upper stage of the equipment system (upper stage of the server 12 mounted on the uppermost stage), which forms a reciprocating air flow path in order to increase the length of the exhaust flow 9 and achieve noise reduction; Consists of

  The intake duct portion 1 is formed in a duct shape, and has an opening 3 for intake of exhaust from the back surface of the server 11, and an opening 4 for communicating the exhaust portion 2 and the exhaust flow 9 on the upper surface. The intake duct section 1 is usually mounted (mounted) according to the number of servers constituting one server and its height, so that the exhaust air flow 9 is communicated between the intake duct sections adjacent to each other in the vertical direction. An opening is formed. In addition, in order to pass the power cable / IO cable 10 connected to the rear surface of the server 11 through the bottom surface 8 of the intake duct portion 1 positioned at the lowest position, a rubber or sponge having a high degree of cut is used. It has a closed structure. The exhaust duct portion 2 is formed in a duct shape by providing a partition 6 inside, and has an opening 5 for communicating with the intake duct portion 1 on the lower surface on the back side. As shown in FIG. A partition 6 for reciprocating 9 is provided, and an exhaust outlet (opening) 7 is provided on the upper back surface. Further, in the intake duct portion 1 and the exhaust duct portion 2, portions other than the openings are formed by wall surfaces, and a sound absorbing material is mounted on the inner wall surfaces.

  Therefore, the exhaust from the rear surface of the server 11 is sucked through the opening 3 of the intake duct portion 1, rises along the inner wall surface, passes through the opening 4 and the opening 5, and flows to the rear portion of the exhaust duct portion 2. Exhaust gas that has flowed to the back surface of the exhaust duct portion 2 passes through the forward air flow path between the bottom surface of the exhaust duct portion 2 and the partition 6 installed inside, and flows from the back surface side to the front surface side. Passing through the return air flow path between the upper surface of the section 2 and the partition 6 and flowing from the front side to the back side, and finally exhausted from the outlet (opening) 7, there is little pressure loss due to the long air flow path, Silence will be removed.

  In addition, although the surfaces 3, 4, 5, and 7 related to intake and exhaust are all completely open, the bottom surface 8 of the intake duct portion 1 passes the power cable / IO cable 10 etc. connected to the back of the server. It has a structure that is covered with a highly elastic rubber or sponge with cuts. Further, in the exhaust duct portion 2, as shown in FIG. 3, the return air flow between the bottom surface of the exhaust duct portion 2 and the partition 6 and between the upper surface of the exhaust duct portion 2 and the partition 6. A plurality of baffle plates (opening portions are alternately provided on the upper side and the lower side) may be provided in the road so that a plurality of exhaust flows 9 meander to achieve noise reduction. However, if the exhaust flow 9 is too much meandering, the pressure loss increases and the cooling performance is lowered. Therefore, it is necessary to design the meander structure 14 in the exhaust part 2 so that the pressure loss does not increase.

  As described above, in the noise reduction duct system 20 configured to include the intake duct portion 1 and the exhaust duct portion 2, the sound absorbing material is mounted on the inner walls of the intake duct portion 1 and the exhaust duct portion 2, and the exhaust duct portion 2. By installing a noise reduction duct system 20 independent of the rack cabinet in the existing rack cabinet by taking a reciprocating air flow path that flows from the back side to the front side and from the front side to the back side inside the rack, Even if the number of servers mounted on the rack increases without changing the cabinet structure, the overall system can achieve low noise.

  Further, in the intake duct portion, even if the number of servers increases, an attachment according to the number of servers and the height corresponding to the increased number of servers is added, and the exhaust duct portion 2 is added to the added intake duct portion 1. By connecting the exhaust duct unit 2 to the upper stage of the rack cabinet, it is possible to increase the noise reduction duct system 20 as a whole in accordance with the number and size of servers mounted in the rack. .

As described above, according to the embodiment of the present invention, the intake duct portion 1 and the exhaust duct portion 2 that receive exhaust and noise from the server are made independent so that they can be independently mounted in the rack cabinet. Thus, increase / decrease / size change of the number of servers mounted in the rack cabinet can be handled only by removing the intake duct portion 1 .

  Next, an embodiment of a rack mount type electronic device system (rack mount server system) provided with a noise reduction duct system according to the present invention will be described with reference to FIGS. FIG. 4 is a side view showing a state in which the silent duct system 20 is mounted on a rack 13 on which a plurality of servers 11 having a predetermined number of servers are mounted. The wind sucked from the front of each server 11 passes through the exhaust port on the back of each server and is exhausted by the silent duct system 20 along the flow indicated by 9. Among the servers mounted on the rack 13, the exhaust duct unit 2 is mounted on the rack 13 and installed on the upper stage of the server 12 mounted on the top, and the number of servers and the server height including the attachment of the additional intake duct are included. Accordingly, the intake duct portion 1 is mounted on the back side of the server group so as to communicate with the exhaust duct portion 2. Even if the number of servers increases, the number of servers corresponding to each of the increased number of servers and the attachment of intake ducts corresponding to their heights can be created, so when the number of servers increases, If the attachment of the air intake duct is added to the upper and lower portions of the air intake duct part and the whole air intake duct part 1 is mounted on the back of a plurality of servers, the number of servers actually mounted on the rack 13 is increased. It becomes possible to match it. That is, even if the number of servers increases, the attachment of intake ducts corresponding to the increased number of servers and the height thereof is added, and the exhaust duct unit 2 is simply mounted (mounted), so that the noise reduction duct system 20 can be rack mounted. It can be mounted on an electronic device system (rack mount server system).

  FIG. 5 is a side view showing a state in which the silent duct system 20 is mounted on the rack 13 on which a plurality of servers 11 are mounted. In FIG. 5, the intake duct portion 1 and the exhaust duct portion 2 of the noise reduction duct system 20 are separated from the server 11 group. As described above, when mounting, among the servers mounted on the rack 13, The exhaust duct portion 2 is mounted on the rack 13 from the front side of the rack, for example, on the upper stage of the server 12 installed in the rack. For example, the number of servers increased from the rear side of the rack as required and the attachment of the intake duct suitable for the height By adding and connecting the entire intake duct portion 1 in communication with the exhaust duct portion 2, it is possible to cope with a case where a plurality of servers are installed.

It is a perspective view which shows the state which mounts an intake part in the exhaust part which is the whole view of one Embodiment of the noise reduction duct system which concerns on this invention. It is side surface fragmentary sectional view which shows one Embodiment of the noise reduction duct system which concerns on this invention. It is side surface fragmentary sectional view which shows one Example of the meander structure inside an exhaust part which concerns on this invention. It is a side view which shows the state which mounted one Embodiment of the noise reduction duct system shown in FIG. 1 in the rack mount server system with which the server was mounted in multiple units | sets in the rack. It is a perspective view which shows the state which mounted one Embodiment of the noise reduction duct system shown in FIG. 1 in the rack mount server system with which the server was mounted in multiple units | sets in the rack.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Intake duct part, 2 ... Exhaust duct part, 3, 4, 5 ... Opening, 6 ... Partition, 7 ... Opening (exit) 8 ... Cable discharge surface, 9 ... Wind flow, 10 ... Cable, 11 ... Server, 12 ... Server installed at the top, 13 ... Rack, 14 ... Internal structure of exhaust section (meandering structure).

Claims (3)

A rack-mounted electronic device system for mounting electronic devices in a rack cabinet,
An air duct that rises by sucking exhaust air from the back side of the electronic device, and has an air intake duct portion with an inner wall mounted with a sound absorbing material, communicated with the air intake duct portion, and communicated from the back side to the front surface A silent duct system having a forward air flow channel that flows to the side and a return air flow channel that flows and exhausts from the front side to the back side, and an exhaust duct portion having a sound absorbing material mounted on an inner wall surface. Is mounted on the back of the electronic device, the exhaust duct is mounted on the upper stage of the rack cabinet, and the intake duct can be added sequentially according to the number and size of servers to be mounted. A rack-mount type electronic device system configured to connect the intake duct portion and the exhaust duct portion that are configured . 2. The rack mount type electronic device system according to claim 1, wherein the air duct inside the exhaust duct has a meandering structure. A rack-mounted electronic device system for mounting electronic devices in a rack cabinet,
An air duct that rises by sucking exhaust air from the back side of the electronic device, and has an air intake duct portion with an inner wall mounted with a sound absorbing material, communicated with the air intake duct portion, and communicated from the back side to the front surface Silently independent of the rack cabinet having a forward air flow channel that flows to the side and a return air flow channel that flows and exhausts air from the front side to the back side, and an exhaust duct portion having a sound absorbing material mounted on the inner wall surface A duct system is mounted on an existing rack cabinet, and the intake duct unit can be sequentially added according to the number and size of servers to be mounted, and the configured intake duct unit and exhaust duct unit are configured. A rack-mount type electronic device system characterized in that it can be connected to each other.

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