JP6103464B2 - Air conditioning system - Google Patents

Description

  The present invention relates to an air conditioning system. More specifically, the present invention relates to a floor blowing / ceiling suction type air conditioning system.

  For example, in a server room of a data center, it is required to efficiently cool a large number of servers accommodated in a plurality of server racks arranged in parallel. Conventionally, a so-called floor blowing / ceiling suction type air conditioning system is known as a hot aisle / cold aisle server room air conditioning method.

  Specifically, in a floor blowout / ceiling suction type air conditioning system, blowout panels having openings are distributed along the floor surface. Then, the cooling air supplied from the air conditioner to the air supply chamber under the floor is blown out from the blow-out panel to the indoor space, and the high-temperature air formed in the hot aisle by the exhaust heat of the server is sucked from the ceiling suction port.

  However, in the conventional configuration, the speed of the cooling air flowing immediately below the blow-out panel arranged near the air conditioner becomes too high, and a suction phenomenon from the indoor space to the air supply chamber may occur in the blow-out panel. there were. In this case, there is a disadvantage that the cooling air cannot be sufficiently supplied to the indoor space due to the suction phenomenon in the blowout panel.

  The present invention has been made in view of the above-described problems, and can suppress the occurrence of a suction phenomenon in a blow-out panel disposed near an air conditioner and sufficiently supply cooling air to an indoor space. The purpose is to provide an air-conditioning system with floor blowing and ceiling suction.

In order to solve the above-mentioned problems, in the present invention, floor air and ceiling suction are provided in which cooling air supplied from an air conditioner to an under-floor air supply chamber is blown out from a plurality of blow-out panels arranged along the floor surface to an indoor space. In the air conditioning system
Comprising a rectifying member that controls the so that to the static pressure conditions of the predetermined height space by suppressing the flow rate of the cooling air at a predetermined height space located immediately below the blowing panel,
The blowout panel has a rectangular outer shape,
The rectifying member has four surfaces suspended by a predetermined distance from positions corresponding to the sides of the rectangular blowout panel,
The cooling air is blown upward from the blow-out panel to the indoor space by the action of the predetermined height space that has been brought into a static pressure state .

  In the present invention, it is configured to suppress the flow velocity of the cooling air in a predetermined height space located immediately below the blowout panel by the action of the rectifying member, so that the suction phenomenon in the blowout panel arranged near the air conditioner Generation | occurrence | production can be suppressed and cooling air supply to indoor space can fully be performed.

1 is a cross-sectional view schematically showing a basic configuration of an air conditioning system according to an embodiment of the present invention. It is sectional drawing which shows roughly the characteristic principal part structure of the air conditioning system concerning this embodiment. It is a perspective view which shows the structure of a blowing panel roughly. It is a perspective view which shows the structure of a baffle member roughly. It is a figure explaining the inconvenience in a conventional structure. It is a figure explaining the effect | action of the rectification | straightening member in this embodiment.

  Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a cross-sectional view schematically showing a basic configuration of an air conditioning system according to an embodiment of the present invention. In a server room to which the air conditioning system of this embodiment is exemplarily applied, a plurality of server racks are arranged in parallel. FIG. 1 shows only two server racks 11a and 11b among a plurality of server racks arranged in parallel in the horizontal direction in the drawing due to space limitations. Each server rack accommodates a large number of servers (not shown) vertically and horizontally.

  The server has a structure in which air is sucked from the front side to cool internal components such as a processor and exhausted from the back side. In the server room of the hot aisle / cold aisle system, each server rack is accommodated so that the front of all servers face the same side. Further, in a pair of server racks adjacent in the parallel direction (horizontal direction in FIG. 1), the front (or rear) of the server accommodated in one server rack and the front (or rear) of the server accommodated in the other server rack. ) And face each other.

  Specifically, in the server rack 11a on the right side in the figure, all the servers are accommodated so that the front faces left, and in the left server rack 11b, all the servers are accommodated so that the front faces right. Hereinafter, the front side of the housed server is referred to as the front side of the server rack, and the back side of the server is referred to as the back side of the server rack. In this case, the space on the back side of the server racks 11a and 11b (indicated by a dashed ellipse in the figure) is the hot aisle 12, and the space between the pair of server racks 11a and 11b (indicated by a dashed ellipse in the figure). Is the cold aisle 13.

  That is, the hot aisle 12 is a space where the exhaust heat of the server gathers, and the cold aisle 13 is a space for supplying cold air sucked by the server. In a hot aisle / cold aisle server room, hot aisle and cold aisle are alternately formed between multiple server racks arranged in parallel, and the indoor space is clearly divided into hot aisle and cold aisle. . As a result, the cooling air from the air conditioner is efficiently supplied to the server, so that the cooling efficiency in the server room is improved and the power consumption of the air conditioner is reduced.

  In this embodiment, a floor blowing / ceiling suction type air conditioning system is employed. That is, in the air conditioning system of the present embodiment, cooling air is supplied from an air conditioner (not shown) to the air supply chamber 16 between the floor 14 of the server room and the floor slab 15. The cooling air supplied to the air supply chamber 16 under the floor is blown into the indoor space through openings of blowout panels (not shown in FIG. 1) distributed along the floor surface 14, and the server racks 11a and 11b. A cold / hot region is formed in the cold aisle 13 between the two.

  The servers in the server racks 11 a and 11 b suck in cold and warm air from the cold aisle 13. On the other hand, due to the exhaust heat of the servers in the server racks 11a and 11b, high temperature regions are formed in the hot aisle 12 on the back side of the server rack 11a and the back side of the server rack 11b. The hot air in the hot aisle 12 naturally rises due to its buoyancy and flows into a ceiling inlet (not shown) provided in the ceiling surface 17 above the hot aisle 12. The air sucked into the ceiling suction port returns to the air conditioner through a return air chamber (not shown).

  In the floor blowing / ceiling suction type air conditioning system, as shown in FIG. 2, the blowing panels 1 having a large number of small openings are dispersedly arranged so as to be scattered along the floor surface. In FIG. 2, as a typical example, a state in which one blowing panel 1 is arranged so as to be sandwiched between a pair of floor panels 2 having no opening is shown.

  The blowout panel 1 and the floor panel 2 are, for example, metal panels having a rectangular outer shape, and have the same standardized size. The blowout panel 1 and the floor panel 2 are supported by a floor frame (not shown). Specifically, as shown in FIG. 3, the blow-out panel 1 has small openings 1a formed according to a predetermined distribution (for example, uniform distribution) over almost the entire surface thereof.

  Referring to FIG. 2 again, a rectifying member 3 for controlling the flow of the cooling air supplied to the air supply chamber 16 is attached to the lower side of the blowout panel 1. In the rectifying member 3, as shown in FIG. 4, four rectangular plate members 3a having the same height are arranged so as to form a rectangular shape of the blowout panel 1 as viewed from above. The four plate members 3a constituting the rectangular frame member are reinforced by, for example, auxiliary members 3b arranged in a cross shape when viewed from above.

  As described above, the rectifying member 3 has four surfaces (outside the plate member 3a) that hang from the position corresponding to each side of the rectangular blow-out panel 1 by a predetermined distance (a distance corresponding to the height dimension of the plate member 3a). Side). That is, the horizontal dimension of the plate member 3a substantially matches the dimension of the corresponding side of the blowout panel 1. As an example, the rectifying member 3 can be formed of the same metal as the blowout panel 1 and the floor panel 2.

In the conventional configuration in which the rectifying member 3 is not provided, if the speed of the cooling air supplied from the air conditioner is set to be large to some extent in order to sufficiently supply the cooling air to the indoor space, it is arranged near the air conditioner. The speed of the cooling air flowing directly under the blowout panel 1 becomes too large. That is, in the conventional configuration, as shown in FIG. 5, the cooling air flow velocity V ₀ at the boundary surface 51 formed by the lower surface of the blow-out panel 1 becomes too large. As a result, a suction phenomenon from the indoor space to the air supply chamber 16 occurs in the blow-out panel 1, and the cooling air cannot be sufficiently supplied to the indoor space.

On the other hand, in this embodiment, the flow of the cooling air is blocked by the action of the rectifying member 3 attached to the lower side of the blow-out panel 1, and as a result, a predetermined height space (that is, the blow-out panel 1) located immediately below the blow-out panel 1. The flow velocity of the cooling air is suppressed in a rectangular parallelepiped space surrounded by the panel 1 and the four plate members 3a. That is, in this embodiment, as shown in FIG. 6, the flow of the cooling air is disturbed (vortex) by the action of the plate member 3 a of the rectifying member 3 that functions as a baffle plate. The cooling air flow velocity V ₁ at the boundary surface 52 is sufficiently smaller than the cooling air flow velocity V ₀ at the boundary surface 51 in the conventional configuration.

  As a result, the pressure environment in the space immediately below the blow-out panel 1 is from a dynamic pressure state (a state in which the flow of cooling air is constantly generated) that causes a suction phenomenon from the indoor space to the air supply chamber 16. It changes to a substantially static pressure state (a state in which the flow of cooling air hardly occurs). As described above, in the air conditioning system of the present embodiment, the flow rate of the cooling air is suppressed in the predetermined height space located immediately below the blow-out panel 1 by the action of the rectifying member 3, so Occurrence of the suction phenomenon in the blowout panel 1 disposed nearby can be prevented, and cooling air can be sufficiently supplied to the indoor space.

  Further, since the total pressure in the space immediately below the blow-out panel 1 becomes almost the static pressure under the floor due to the action of the rectifying member 3, the amount of cooling air blown from the blow-out panel 1 arranged near the air conditioner and the air-conditioning The difference from the amount of cooling air blown from the blowout panel 1 arranged away from the machine becomes small. As a result, it is possible to suppress an unbalance of the cooling air blowing amounts in the plurality of blowing panels 1 and obtain a substantially uniform cooling effect over the entire indoor space.

  In the above-described embodiment, the configuration and operation of the present invention are described by taking the air conditioning system including the rectifying member 3 having the specific configuration illustrated in FIG. 4 as an example. However, the present invention is not limited to this, and various modifications can be made to the specific configuration of the rectifying member. For example, in the configuration shown in FIG. 4, the space surrounded by the four plate members 3a is divided into four by the auxiliary member 3b. However, the present invention is not limited to this. Division, 9 division, etc.) may be employed. Or the structure which does not divide | segment the space enclosed by the four plate members 3a, without using an auxiliary member may be sufficient. What is important in the rectifying member is to control the flow rate of the cooling air in a predetermined height space located directly below the blowout panel.

  In the above-described embodiment, the present invention is applied to a floor blowing / ceiling suction type air conditioning system in a hot aisle / cold aisle server room. However, the present invention is not limited to a hot aisle / cold aisle system or a server room, and in general, cooling air supplied from an air conditioner to an air supply chamber under the floor is sent from a plurality of blow-out panels arranged along the floor to the room. The present invention can be applied to a floor blowing / ceiling suction type air conditioning system that blows into a space.

DESCRIPTION OF SYMBOLS 1 Blowout panel 1a Opening part 2 Floor panel 3 Rectification member 3a Plate member 3b Auxiliary member 11a, 11b Server rack 12 Hot aisle 13 Cold aisle 14 Floor 15 Floor slab 16 Supply chamber 17 Ceiling

Claims (2)

In a floor blowing / ceiling suction type air conditioning system that blows cooling air supplied from an air conditioner to the air supply chamber under the floor from a plurality of blowing panels arranged along the floor surface to the indoor space,
Comprising a rectifying member that controls the so that to the static pressure conditions of the predetermined height space by suppressing the flow rate of the cooling air at a predetermined height space located immediately below the blowing panel,
The blowout panel has a rectangular outer shape,
The rectifying member has four surfaces suspended by a predetermined distance from positions corresponding to the sides of the rectangular blowout panel,
The air conditioning system, wherein the cooling air is blown upward from the blow-out panel to the indoor space by the action of the predetermined height space that has been brought into a static pressure state . The rectifying member has four rectangular plate members perpendicular to the floor surface, which are defined by one side corresponding to each side of the rectangular blow-out panel and one side corresponding to the predetermined distance. The air conditioning system according to claim 1.

Images