WO2020255268A1

WO2020255268A1 - Rack

Info

Publication number: WO2020255268A1
Application number: PCT/JP2019/024147
Authority: WO
Inventors: 友美長尾; 櫻井　敦; 田中　百合子
Original assignee: 日本電信電話株式会社
Priority date: 2019-06-18
Filing date: 2019-06-18
Publication date: 2020-12-24

Abstract

This rack for housing one or more information communication devices is provided with two rails respectively installed vertically on both side surfaces of the rack, and a plurality of blank panels having a rebound resilience with one side adhered to each rail, wherein the plurality of blank panels are installed across the entire surface of a front opening portion of the rack.

Description

rack

The present invention relates to a cooling technique for information and communication equipment in a data center or the like.

In machine rooms such as data centers and server rooms, information and communication equipment is stored and used in racks. In order to prevent the failure of information and communication equipment, it is necessary to take measures against the heat generated by the information and communication equipment, and in many cases, an air conditioner is used to cool the information and communication equipment.

In order to efficiently cool information and communication equipment, it is desirable that the flow path of cold air sucked in by the information and communication equipment and the flow path of warm air discharged are separated. However, when there is an unused space in the rack, warm air may circulate through the unused space and hinder cooling (Non-Patent Document 1, FIG. 1).

There is a method of using a blank panel for the purpose of solving the above problems (Non-Patent Document 1, FIG. 1). Further, for the purpose of avoiding the complexity of attaching the blank panel, a rack in which a retractable blank panel is pre-mounted has also been proposed (Patent Document 1).

Japanese Unexamined Patent Publication No. 2018-186181

The above-mentioned conventional technique can prevent reflux through the unused space in the rack, but cannot prevent reflux through the open space between the side surface of the rack and the mount rail. Further, if the installation work of the blank panel or the like is required, there is a possibility that the information communication device may be forgotten to be installed when the information communication device is removed.

The present invention has been made in view of the above points, and it does not require mounting work and makes it possible to prevent reflux through an unused space in the rack and an open space between the side surface of the rack and the mount rail. The purpose is to provide technology.

According to the disclosed technology, it is a rack that stores one or more information and communication devices.
Two rails installed in the vertical direction on both sides of the rack,
Each rail is equipped with a plurality of blank panels having impact resilience with one side bonded to each other.
The plurality of blank panels are provided in a rack that is installed over the entire front opening of the rack.

According to the disclosed technology, a technology that does not require mounting work and makes it possible to prevent reflux through an unused space in the rack and an open space between the rack side surface and the mount rail is provided.

It is a figure which shows the structural example of the machine room where the rack is arranged in embodiment of this invention. It is a figure which shows the structural example of the machine room where the rack is arranged in embodiment of this invention. It is a figure for demonstrating a problem. It is a figure which shows the rack in embodiment of this invention. It is a figure which shows the 1st state. It is a figure which shows the 2nd state. It is a figure which shows the 1st state. It is a figure which shows the 1st state. It is the figure which looked at the blank panel from the front of a rack.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiments described below are merely examples, and the embodiments to which the present invention is applied are not limited to the following embodiments.

In the following embodiments, it is assumed that the present invention is applied to the cooling of information and communication equipment mounted on a rack. Information and communication equipment includes, for example, communication devices such as exchanges, switches, and routers, servers, computers, patch panels, patch panel control robots, and the like.

(Example of machine room)
Before explaining the structure of the rack in the present embodiment in detail, first, the basic structure of the machine room in which the rack is installed and the air flow in the present embodiment will be described. However, the structure of the machine room described here is an example. The rack in this embodiment may be used in any place.

In the present embodiment, the information and communication equipment mounted on the rack is cooled by the cold air blown from the air conditioner installed in the machine room having a double floor structure.

FIG. 1 is a diagram for explaining how air flows in the machine room according to the present embodiment. As shown in FIG. 1, in this example, a rack 20 on which an information communication device to be cooled is mounted is installed on a double floor panel 30 having a large number of small holes. The rack 20 shown in FIG. 1 is a set of a plurality of racks (individual racks).

In addition, the air conditioner 10 is installed as shown in the figure. The air conditioner 10 of the present embodiment blows cold air under the double floor in a direction parallel to the front surface of the rack and parallel to the floor surface described as “front surface of the rack”.

As shown in FIG. 1, the cold air 40 output from the air conditioner 10 flows under the double floor while weakening the momentum as the distance from the air conditioner 10 increases, and flows from the small holes of the double floor panel to the double floor. It goes up as cold air 50. Then, the cold air 50 is sucked into the front surface of the rack, cools the information and communication equipment in the rack 20, and is discharged as a high-temperature exhaust 60 from the back surface of the rack. The exhaust 60 is returned to the air conditioner 10.

Normally, a plurality of racks 20 are installed in the machine room, but for the purpose of improving air conditioning efficiency, as shown in FIG. 2, a plurality of racks 20 are formed in pairs so that the front surfaces of the two racks face each other. The racks are arranged in parallel. In the example of FIG. 2, the front surface of the rack 21 and the front surface of the rack 22 face each other, and the back surface of the rack 22 and the back surface of the rack 23 face each other. As a result, the cold aisle and the hot aisle as shown in FIG. 2 are formed.

(About issues)
Here, the above-mentioned problems will be described in more detail. As mentioned above, when there is unused space in the rack, warm air may return from the back side to the front side through the unused space, which may hinder cooling. However, the conventional blank panel allows the rack to move up and down. Reflux of warm air in unused space is prevented.

FIG. 3 is a front view of a general rack. As shown in FIG. 3, two mount rails are attached to the frame of the rack. The mount rail is a member for mounting an information communication device on a rack. As shown in FIG. 3, an open space is created between the side surface of the rack and the mount rail.

By attaching a conventional blank panel to an unused space, it is possible to prevent reflux through the unused space. However, reflux through the open space between the side of the rack and the mount rail cannot be prevented. An example of a rack structure that solves the problem will be described below.

(Lack structure example)
As a basic structure, the rack 1 in the present embodiment has a main frame as a skeleton of the rack, a ceiling plate attached to the upper part of the main frame, and side plates attached to both side surfaces of the main frame. It has a structure to which a mount rail is attached. The mount rail may be attached to the main frame, or may be attached to a member other than the main frame that constitutes the rack 1.

The size of the rack 1 may be any size. As an example, the rack height is 1800 mm / 2000 mm / 2200 mm, the rack width is 600 mm / 700 mm / 800 mm, the rack depth is 1000 mm / 1100 mm / 1200 mm, and the like.

In the following, the structure of the object added to the above-mentioned basic structure constituting the rack 1 will be mainly described.

<Basic structure>
FIG. 4 is a perspective view of the rack 1 according to the present embodiment as viewed from the front side. As shown in FIG. 4, the rack 1 is provided with rails 2-1 and 2-2 (2-2 is hidden in FIG. 4) bonded to the side surface of the rack (the left side surface and the right side surface when viewed from the front). , With blank panels 3-1 and 3-2 adhered to each rail 2. The blank panel 3-1 is a portion on the left side from the vicinity of the center in the width direction of the rack 1 when viewed from the front side, and the blank panel 3-2 is a portion on the right side from the vicinity of the center. The blank panel may be referred to as an "exhaust heat return prevention panel".

The blank panels 3-1 and 3-2 are installed on the entire surface of the opening 5 (open space) on the front surface of the rack 1, although only a part thereof is shown in FIG. 4 in the vertical direction.

Rails 2-1 and 2-2 are located behind the back surface of mount rails 4-1 and 4-2. That is, the distance between the rail 2-1 and the back surface of the rack 1 is smaller than the distance between the back surface of the mount rail 4-1 and the back surface of the rack 1. The same applies to rail 2-2 and mount rail 4-2. As a result, when the information communication device is mounted on the mount rail 4, the screwing work to the mount rail 4 is not hindered.

<State before and after installing information and communication equipment>
5 and 6 are views of a cross section of the rack 1 cut in a horizontal plane at the height positions of the blank panels 3-1 and 3-2 as viewed from above.

When the information communication device 6 is not mounted at the height position of the blank panels 3-1 and 3-2, the blank panels 3-1 and 3-2 close the opening 5 as shown in FIG. It becomes the state of 1.

When the information communication device 6 is mounted at the height position of the blank panels 3-1 and 3-2, as shown in FIG. 6, the blank panel 3 responds as the information communication device 6 is pushed into the rack 1. -1, 3-2 transitions to the second state in which the rack 1 is pushed into the rack 1. The information communication device 6 in the present embodiment is a device having an intake surface on the front surface and an exhaust surface on the back surface.

Further, the blank panels 3-1 and 3-2 transition from the second state to the first state in response to taking out the mounted information communication device 6.

<Example of blank panel material>
As the material of the blank panels 3-1 and 3-2, for example, a material having excellent impact resilience, heat resistance, flame resistance, and electrical insulation is used. For example, various sheets disclosed in Non-Patent Document 2 can be used as materials for blank panels 3-1 and 3-2.

Further, among the materials of the blank panels 3-1 and 3-2, a material having excellent thermal conductivity may be used for the surface on the side in contact with the information communication device 6. By using a material having excellent thermal conductivity, cooling of the information communication device 6 can be expected.

As a material having excellent thermal conductivity, for example, the materials disclosed in Non-Patent Documents 3 and 4 can be used. Specifically, for example, the PET film disclosed in Non-Patent Document 3 is non-patented on the surface of the material used as the substrate of the blank panels 3-1 and 3-2 (the surface on the side in contact with the information and communication device 6). Blank panels 3-1 and 3-2 are prepared by adhering with the heat conductive adhesive disclosed in Document 4.

<Detailed example of the shape of the contact part of the blank panel>
7 and 8 are views of a cross section of the rack 1 cut in a horizontal plane at the height positions of the blank panels 3-1 and 3-2 as viewed from above.

As shown in FIG. 7, the shape of the portion where the blank panel 3-1 and the blank panel 3-2 come into contact with each other may be overlapped in order to prevent reflux through the space. In the example shown in FIG. 7, the blank panel 3-1 is behind the blank panel 3-2 (in the depth direction when viewed from the front surface of the rack 1), and a part of the front surface side surface of the rack 1 of the blank panel 3-1 is. , The blank panel 3-2 is in contact with a part of the back surface side of the rack 1. In the example of FIG. 7, they are in contact with each other by the length indicated by A.

Further, as shown in FIG. 8, the blank panel 3-1 and the blank panel 3-2 may be hooked on each other. In the example of FIG. 8, the right end portion of the blank panel 3-1 is folded toward the front side of the rack 1, the left end portion of the blank panel 3-2 is folded toward the back surface side of the rack 1, and the blank panel 3- is the portion indicated by A and B. 1 and the blank panel 3-2 are hooked on each other.

<Blank panel size>
The width of each of the blank panels 3-1 and 3-2 (the length in the width direction of the rack 1 as viewed from the front side) is half the width of the rack 1. However, the "half length" in "half the width of the rack 1" does not have to be exactly half the length. The length may be such that the structures shown in FIGS. 7 and 8 can be realized.

The heights of the blank panels 3-1 and 3-2 (the lengths in the vertical direction of the rack 1) are, for example, the lengths of one pitch of the equipment mounting holes of the mount rails 4-1 and 4-2. .. In FIG. 9, which is a view of the front surface of the rack 1 viewed from the front surface side of the rack 1, there is one pitch between the device mounting holes (for example, between 7-1 and 7-2). For example, an information communication device having a thickness of one pitch is mounted on the rack 1.

However, the heights of the blank panels 3-1 and 3-2 (the length in the vertical direction of the rack 1) may be the length of one pitch of the equipment mounting holes of the mount rails 4-1 and 4-2. This is an example. For example, when it is assumed that an information communication device having a thickness of a plurality of pitches is mounted on the rack 1, the heights of the blank panels 3-1 and 3-2 are the lengths of the plurality of pitches. May be good.

FIG. 9 shows that three "pairs of blank panel 3-1 and blank panel 3-2" are arranged in contact with each other in the height direction. In this way, a "pair of blank panel 3-1 and blank panel 3-2" is installed on the entire surface of the opening 5 of the rack 1 in contact with each other.

However, the "set of blank panel 3-1 and blank panel 3-2" does not overlap in the height direction to prevent entanglement when the communication device is installed.

(Effect of embodiment)
According to the technique according to the present embodiment, it is possible to prevent reflux through an unused space in the rack and an open space between the side surface of the rack and the mount rail, and it is possible to improve the cooling efficiency of the information and communication equipment.

Also, since a blank panel is installed in the rack in advance, installation work is not required and the cooling efficiency can be maintained high. In addition, the blank panel will not be forgotten to be attached.

(Summary of embodiments)
In this embodiment, at least the following racks are provided.
(Section 1)
A rack that houses one or more information and communication devices.
Two rails installed in the vertical direction on both sides of the rack,
Each rail is equipped with a plurality of blank panels having impact resilience with one side bonded to each other.
The plurality of blank panels are installed over the entire front opening of the rack.
(Section 2)
The rack according to item 1, wherein each of the plurality of blank panels is installed behind the back surface of the mount rail provided in the rack.
(Section 3)
The width of each of the plurality of blank panels is half the width of the rack, and the height is the length of one pitch of the equipment mounting holes of the mount rail provided in the rack. Or the rack according to item 2.
(Section 4)
In the state where the information and communication device is not mounted, the end portion of the first blank panel bonded to one of the two rails on the opposite side to the bonded portion to the rail, and the first blank panel. Described in any one of the items 1 to 3 in which the portion of the second blank panel adhered to the other rail at the same height as the rail and the end portion on the opposite side overlap with the rail. Rack.
(Section 5)
The rack according to item 4, wherein each of the first blank panel and the second blank panel is pushed into the rack by the information communication device in a state where the information communication device is mounted.

Although the present embodiment has been described above, the present invention is not limited to such a specific embodiment, and various modifications and changes can be made within the scope of the gist of the present invention described in the claims. It is possible.

10 Air conditioner 20 Rack row 30 Double floor panel 1 Rack 2-1, 2-2 Rail 3-1, 3-2 Blank panel 4-1, 4-2 Mount rail 5 Opening 6 Information and communication equipment 7-1 ~ 7-4 Equipment mounting holes

Claims

A rack that houses one or more information and communication devices.
Two rails installed in the vertical direction on both sides of the rack,
Each rail is equipped with a plurality of blank panels having impact resilience with one side bonded to each other.
The plurality of blank panels are installed over the entire front opening of the rack.
The rack according to claim 1, wherein each of the plurality of blank panels is installed behind the back surface of a mount rail provided in the rack.
Claim 1 that each of the plurality of blank panels has a width of half the width of the rack and a height of one pitch of equipment mounting holes of the mount rail provided in the rack. Or the rack according to 2.
In the state where the information and communication device is not mounted, the end portion of the first blank panel bonded to one of the two rails on the opposite side to the bonded portion to the rail, and the first blank panel. The rack according to any one of claims 1 to 3, which is located at the same height as the rail and has an adhesive portion to the rail and an end portion on the opposite side of the second blank panel bonded to the other rail. ..
The rack according to claim 4, wherein each of the first blank panel and the second blank panel is pushed into the rack by the information communication device in a state where the information communication device is mounted.