JP5677189B2 - Air conditioning equipment - Google Patents

Description

  The present invention relates to an air conditioner suitable for air-conditioning a room such as a computer room in a data center in which a large number of high-heat-generating electronic devices such as servers are installed.

  In a conventional air conditioner in a computer room of a data center, generally, cold air from an air conditioner is blown from below the floor to a rack such as a server, and exhaust from the ceiling is circulated to the air conditioner. At this time, since the server and the like generate a great amount of heat throughout the year, it was necessary to input a large amount of energy for cooling into the air conditioner.

  In order to reduce the energy input to the air conditioner, attention has been paid to effective use of the outside air cooling, and Patent Document 1 shows an example thereof. In the air-conditioning equipment described in Patent Document 1, outside air is taken in from the outside, and the taken-in outside air is conditioned with a cooling coil and a humidifier and then blown into the room. Further, when the outside air condition is suitable for the computer room, the outside air is directly introduced into the computer room and discharged to the outside.

JP 2010-261696 A

  By the way, when air-conditioning the computer room, it is necessary to appropriately manage the humidity in addition to the temperature. This is because if the humidity is too high, problems such as dew condensation or electrical circuit short-circuiting may occur, and if the humidity is too low, a failure due to static electricity may occur. However, in the air conditioning equipment described in Patent Document 1 described above, there is a problem that it is difficult to properly control humidity while effectively using the outside air cooling to save energy.

  In view of the above circumstances, an object of the present invention is to provide an air-conditioning facility that can easily and appropriately manage humidity while saving energy by effectively using outside air cooling.

In order to solve the above-described problem, an air conditioning system according to the invention of claim 1 is arranged under an air conditioning target room and the floor of the air conditioning target room, and blows out the conditioned air through the floor into the air conditioning target room. A blowing chamber, an outside air inlet for introducing outside air into the underfloor blowing chamber, a first mist blowing device for blowing mist from the outside air inlet into the underfloor blowing chamber, and air in the air conditioning target chamber An exhaust port that discharges to the outside, is arranged outside the wall of the air conditioning target chamber, communicates with the upper space of the air conditioning target chamber through an upper communication port, and communicates with the lower floor blowing chamber through a lower communication port. A return chamber for returning air discharged from the air-conditioning target chamber through the opening to the underfloor blowing chamber through the lower communication port, and a mist for blowing mist to the return air passing through the return chamber. The amount and the mist spray apparatus includes a, introducing outside air from the outside air inlet into the underfloor outlet chamber, of the air discharged from the air conditioned room, commensurate with the amount of outside air introduced from the outside air inlet of In the first operation mode in which the air is discharged to the outside through the exhaust port, the remaining air is returned to the underfloor blowing chamber through the return chamber, and the mist is blown to the return air by the second mist spraying device. The outside air is introduced from the outside air inlet into the underfloor blowing chamber, the mist is blown to the outside air to be introduced by the first mist blowing device, and the entire amount of air discharged from the air conditioning target chamber is externally passed through the exhaust port. And an operation mode selection means for selectively selecting the second operation mode to be discharged .

Invention of Claim 2 is arranged under the floor of an air-conditioning object room, an under-floor blowing room which is arranged under the floor of the air-conditioning object room, and blows out air conditioned to the inside of the air-conditioning object room. An outside air inlet to be introduced, a first mist blowing device for blowing mist to the outside air introduced from the outside air inlet into the underfloor blowing chamber, an exhaust port for discharging the air in the air conditioning target chamber to the outside, and the air conditioning target It is arranged outside the wall of the room, communicates with the upper space of the air conditioning target room through the upper communication port, communicates with the underfloor blowing chamber through the lower communication port, and is discharged from the air conditioning target room through the upper communication port. A return chamber for returning air to the blowout chamber under the floor through the lower communication port; and a second mist spraying device for blowing mist to the return air passing through the return chamber. An intake port is opened in the lower wall of the return chamber, the exhaust port is opened in the upper wall of the return chamber, and the first mist spraying device communicates the return chamber and the underfloor blowing chamber. Arranged immediately after the outside air inlet on the upstream side of the lower communication port, the second mist spraying device is disposed between the upper part and the lower part of the return chamber, and further, the return chamber, the underfloor blowing chamber, The dehumidifying position of the dehumidifying material is set near the lower communication port that communicates with the dehumidifying material, and the dehumidifying material for dehumidifying the passing air is disposed at the dehumidifying position, and the upper part that communicates the return chamber and the air-conditioned room A dehumidifying material regeneration position is set in the vicinity of the communication port, and a dehumidifying material that performs regeneration of the dehumidifying function by passing air is disposed at the regeneration position .

According to a third aspect of the present invention, in the air conditioning equipment according to the second aspect, outside air is introduced from the outside air inlet into the underfloor blowing chamber, and is introduced from the outside air inlet among the air discharged from the air conditioning target chamber. An amount of air commensurate with the amount of outside air discharged is discharged to the outside through the exhaust port, and the remaining air is returned to the underfloor blowing chamber through the return chamber. The return air is returned to the mist by the second mist spraying device. The first operation mode for blowing air and the outside air introduced into the underfloor blowing chamber from the outside air inlet, the mist is blown to the introduced outside air by the first mist blowing device, and the air discharged from the air-conditioning target chamber And a second operation mode in which the entire amount is discharged to the outside through the exhaust port .

According to a fourth aspect of the present invention, there is provided an air-conditioning target room, an under-floor blowing room that is arranged under the floor of the air-conditioning target room, and blows out air that has been conditioned through the floor and into the air-conditioning target room. An outside air inlet to be introduced, a first mist blowing device for blowing mist to the outside air introduced from the outside air inlet into the underfloor blowing chamber, an exhaust port for discharging the air in the air conditioning target chamber to the outside, and the air conditioning target It is arranged outside the wall of the room, communicates with the upper space of the air conditioning target room through the upper communication port, communicates with the underfloor blowing chamber through the lower communication port, and is discharged from the air conditioning target room through the upper communication port. comprising a return chamber for the return air to the underfloor outlet chamber through the lower communication mouth, and a second mist spray apparatus for spraying a mist into the return air passing through the return chamber, the said first The return chamber provided with the mist spraying device is the first return chamber, and outside the wall of the air-conditioning target room, separately from the first return chamber, the upper communication port opens the upper space of the air-conditioning target room. A second return chamber is provided that communicates with the underfloor blowing chamber through the lower communicating port and returns air discharged from the air-conditioning target chamber through the upper communicating port to the underfloor blowing chamber through the lower communicating port. The second return chamber is provided with an air conditioner that harmonizes the air discharged from the air conditioning target chamber through the upper communication port and sends the air to the underfloor blowing chamber through the lower communication port. A dehumidifying position of the dehumidifying material is set in the vicinity of the lower communication port that communicates the return chamber of the floor with the blowout chamber under the floor, and the passing air is dehumidified at the dehumidifying position. A dehumidifying material is disposed in the vicinity of the upper communication port that communicates the second return chamber and the air-conditioned room, and the dehumidifying function is regenerated by the passing air at the regenerating position. The dehumidifying material to be used is arranged.

  According to a fifth aspect of the present invention, in the air conditioning equipment according to the fourth aspect, outside air is introduced from the outside air intake into the underfloor blowing chamber, and is introduced from the outside air intake among the air discharged from the air conditioning target chamber. An amount of air commensurate with the amount of outside air discharged is discharged to the outside through the exhaust port, and the remaining air is returned to the underfloor blowing chamber through the first return chamber, and the second mist sprayed to the return air A first operation mode in which mist is blown by the apparatus, and outside air is introduced into the underfloor blowing chamber from the outside air inlet, and mist is blown to the introduced outside air by the first mist blowing device and discharged from the air-conditioning target chamber. Of the generated air, an amount of air commensurate with the amount of outside air introduced from the outside air intake is discharged to the outside through the exhaust port, and the remaining air is discharged to the second retarder. The air is returned to the underfloor blowing chamber while being harmonized by the air conditioner, and the passing air is dehumidified by a dehumidifying material disposed in the lower communication port of the second return chamber. It is characterized by comprising an operation mode selection means for selectively selecting a second operation mode in which the dehumidifying function of the dehumidifying material disposed at the upper communication port is regenerated by passing air.

  According to a sixth aspect of the present invention, in the air conditioning facility according to the fourth or fifth aspect, the air-conditioning target room is configured as a rectangular room in plan view, and the first air-conditioning room is disposed outside one opposing two walls of the air-conditioning target room. A return chamber is provided, the second return chamber is provided outside the other two opposing walls of the air-conditioning target room, and the outside air inlet is opened in a lower wall of the first return chamber, An exhaust port is opened in the upper wall of the first return chamber, and the first mist spraying device is located upstream of the lower communication port that communicates the first return chamber and the underfloor blowing chamber. Air that is disposed immediately after the intake port, the second mist spraying device is disposed between the upper part and the lower part of the return chamber, and passes through the lower communication port of the first return chamber. Characterized in that the air passing through the lower communication opening of the second return chamber is blown into the air conditioned room after having been mixed with the underfloor outlet chamber.

The invention of claim 7 is the air-conditioning installation according to any one of claims 2-6, wherein the dehumidifying material in dehumidifying position and dehumidifying member which is in the playback position, to be able to exchange positions with each other It is arranged.

  The invention according to claim 8 is the air conditioning equipment according to claim 7, wherein the dehumidifying material is made of a polymer collecting material.

  A ninth aspect of the present invention is the air conditioning facility according to any one of the first to eighth aspects, wherein the air-conditioning target room is a computer room of a data center in which a high heat-generating electronic device such as a server is installed. It is characterized by.

According to the first aspect of the present invention, since the mist is blown by the first mist spraying device to the outside air introduced from the outside air inlet into the underfloor blowing chamber, the outside air to be introduced can be humidified and cooled. The effect of cooling can be exhibited effectively and energy saving can be achieved. Moreover, since the humidification efficiency can be enhanced by blowing mist to the return air having a high temperature discharged from the air-conditioned room by the second mist spraying device, the humidity of the air-conditioned room is improved particularly in winter. Can keep.
Further, by switching the operation mode between winter and summer, the effect of outside air cooling can be exhibited throughout the year, and energy saving can be achieved. That is, the first operation mode is selected in the winter season or part of the intermediate season. By doing so, the low-temperature outside air dried from the outside air inlet is introduced into the underfloor blowing chamber, and an amount of air corresponding to the introduced outside air amount is discharged from the exhaust port. Further, the remaining air is returned to the underfloor blowing chamber through the return chamber, and mist is blown from the second mist spraying device to the return air, thereby humidifying and cooling. At this time, since the mist is blown to the return air having a high temperature, the humidification efficiency can be increased, and the temperature and humidity of the air-conditioning target room can be kept good. Further, the second operation mode is selected in a part of summer and intermediate periods. By doing so, outside air is introduced into the underfloor blowing chamber from the outside air inlet, and the outside air is humidified and cooled by blowing mist from the first mist blowing device to the introduced outside air, and the exhaust from the air conditioning target chamber does not return. The entire amount is discharged outdoors. Thus, since the cooling effect is exhibited by spraying mist, energy saving can be achieved.

According to the second aspect of the present invention, since the outside air inlet is open to the lower wall of the return chamber, the return air that has passed through the return chamber and the outside air that is introduced from the outside air inlet are separated into the lower space of the return chamber. Can be introduced into the underfloor blowing chamber while mixing. At that time, mainly in summer, the outside air can be humidified and cooled by blowing the mist to the introduced outside air by the first mist blowing device arranged immediately after the outside air intake. In addition, since the exhaust port opens in the upper wall of the return chamber, the air discharged from the air-conditioning target room is divided into the exhaust discharged from the exhaust port and the return air, and the return air is distributed to the return chamber. Can be made. At that time, mainly in winter, the return air is efficiently humidified and cooled by blowing the mist to the return air having a high temperature by the second mist spraying device disposed between the upper part and the lower part of the return chamber. be able to. Further, the air humidified by the first or second mist spraying device is dehumidified by the dehumidifying material in the vicinity of the lower communication port and then introduced into the underfloor blowing chamber, so that it is kept in good humidity. Process air can be supplied to the air-conditioned room. In addition, since the high-temperature air discharged from the air conditioning target room passes through the dehumidifying material disposed at the regeneration position near the upper communication port, the dehumidifying function of the dehumidifying material can be regenerated.

According to the invention of claim 3, by switching the operation mode between winter and summer, the effect of outside air cooling can be exhibited throughout the year, and energy saving can be achieved. That is, the first operation mode is selected in the winter season or part of the intermediate season. By doing so, the low-temperature outside air dried from the outside air inlet is introduced into the underfloor blowing chamber, and an amount of air corresponding to the introduced outside air amount is discharged from the exhaust port. Further, the remaining air is returned to the underfloor blowing chamber through the return chamber, and mist is blown from the second mist spraying device to the return air, thereby humidifying and cooling. At this time, since the mist is blown to the return air having a high temperature, the humidification efficiency can be increased, and the temperature and humidity of the air-conditioning target room can be kept good. Further, the second operation mode is selected in a part of summer and intermediate periods. By doing so, outside air is introduced into the underfloor blowing chamber from the outside air inlet, and the outside air is humidified and cooled by blowing mist from the first mist blowing device to the introduced outside air, and the exhaust from the air conditioning target chamber does not return. The entire amount is discharged outdoors. Thus, since the cooling effect is exhibited by spraying mist, energy saving can be achieved.

  According to the invention of claim 4, a second return chamber provided with an air conditioner is provided separately from the first return chamber provided with the mist spraying device, and a lower communication port of the second return chamber Since the dehumidifying material is disposed near the floor, for example, in the summer, the return air that has been dehumidified by the air conditioning unit and the outside air that has been humidified and cooled by the mist blowing by the first mist blowing device It is possible to supply air to the air-conditioning target room while mixing. Moreover, since the high temperature air exhausted from the air-conditioning target room to the second return chamber passes through the dehumidifying material disposed at the regeneration position near the upper communication port, the dehumidifying function of the dehumidifying material can be regenerated. it can.

  According to the invention of claim 5, by switching the operation mode between winter and summer, the effect of outside air cooling can be exhibited throughout the year, and energy saving can be achieved. That is, the first operation mode is selected in the winter season or part of the intermediate season. By doing so, the low-temperature outside air dried from the outside air inlet is introduced into the underfloor blowing chamber, and an amount of air corresponding to the introduced outside air amount is discharged from the exhaust port. Further, the remaining air is returned to the underfloor blowing chamber through the return chamber, and mist is blown from the second mist spraying device to the return air, thereby humidifying and cooling. At this time, since the mist is blown to the return air having a high temperature, the humidification efficiency can be increased, and the temperature and humidity of the air-conditioning target room can be kept good. Further, the second operation mode is selected in a part of summer and intermediate periods. By doing so, outside air is introduced into the underfloor blowing chamber from the outside air inlet, and mist is blown from the first mist blowing device to the outside air to be introduced and humidified and cooled. Thus, since the cooling effect is exhibited by spraying mist, energy saving can be achieved. In addition, of the exhaust from the air-conditioning target room, an amount of air commensurate with the amount of outside air introduced from the outside air intake is exhausted to the outside through the exhaust port, and the remaining air is conditioned by the air conditioner through the second return chamber. While returning to the blowout room under the floor. At that time, the passing air is dehumidified by the dehumidifying material disposed at the lower communication port of the second return chamber, and the dehumidifying function of the dehumidifying material disposed at the upper communicating port of the second return chamber is regenerated by the passing air. By carrying out like this, the air conditioning machine can supplement the capability which is not sufficient with outside air cooling, and can maintain the air-conditioned room in a favorable temperature and humidity environment.

  According to the sixth aspect of the present invention, the first return chamber for the outside air cooling is disposed outside one opposing two walls of the air conditioning target room having a rectangular shape in plan view, and the air conditioner is provided outside the other opposing two walls. In addition, the second return chamber is arranged so that return air and outside air passing through the first return chamber and the second return chamber are merged in the underfloor blowing chamber, so that an insufficient amount of cooling can be obtained while effectively using the outside air cooling. It can be supplemented with an air conditioner.

  According to the seventh aspect of the present invention, since the dehumidifying material disposed at the dehumidifying position and the dehumidifying material disposed at the regenerating position can be exchanged, the dehumidifying material having saturated dehumidifying capacity is disposed at the regenerating position and already disposed at the regenerating position. By doing so, the dehumidifying material regenerated by the dehumidifying ability can be arranged at the dehumidifying position, and thereby the dehumidifying ability can be continuously exhibited.

  According to the eighth aspect of the present invention, since the polymer collecting material superior in low temperature regenerative property as compared with silica gel or zeolite is used as the dehumidifying material, it is sufficiently dehumidified by exhausting at a higher temperature discharged from the air-conditioned room. The function can be played back.

  According to the invention of claim 9, the inside of a computer room in which a large number of electronic devices such as servers with high heat generation are installed can be kept in an appropriate operating environment while saving energy by effectively utilizing outside air cooling. it can.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structure of the air-conditioning equipment and air flow of 1st Embodiment of this invention, (a) is a side view which shows the air flow at the time of the 1st operation mode mainly performed in winter with an arrow, ( b) is a side view showing by arrows the air flow in the second operation mode executed mainly in summer. It is a figure which shows the structure and air flow of the air conditioner of 2nd Embodiment of this invention, (a) is a top view of an air conditioner, (b) and (c) are IIbc-IIbc arrow sectional views of (a). (B) is a diagram showing the air flow in the first operation mode executed mainly in winter by arrows, and (b) is the air flow in the second operation mode executed mainly in summer. FIG. It is an air line figure used for operation | movement description of 2nd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<First Embodiment>
FIG. 1 is a diagram showing the configuration of the air conditioning equipment of the first embodiment and the air flow. FIG. 1 (a) is a side view showing the air flow in the first operation mode executed mainly in winter by arrows. b) is a side view showing by arrows the air flow in the second operation mode executed mainly in summer.

  This air conditioning equipment is arranged under an air conditioning target room (hereinafter referred to as a “server room”) 10 which is a computer room of a data center in which high heat generating electronic devices such as servers are installed, and a floor 10F of the server room 10. The underfloor blowing chamber 11 that blows out conditioned air into the server room 10 through the floor 10F, the outside air inlet 13 that introduces outside air into the underfloor blowing chamber 11, and the outside air that is introduced from the outside air inlet 13 into the underfloor blowing chamber 11 A first mist spraying device (first mist nozzle) 21 for spraying mist on the exhaust, an exhaust port 14 for exhausting the air in the server room 10 to the outside, and an outer communication wall disposed outside the wall 10W of the server room 10 15 communicates with the upper space of the server room 10, communicates with the underfloor blowing chamber 11 through the lower communication port 16, and is discharged from the server room 10 through the upper communication port 15. A return chamber 12 for returning air to the underfloor blowing chamber through the lower communication port 16 and a second mist spraying device (second mist nozzle) 22 for blowing mist to the return air passing through the return chamber 12 are provided. .

  Inside the server room 10, a plurality of server racks 1 are arranged at intervals, and between the server racks 1, a cold aisle 2 in which conditioned air for cooling the servers flows and a conditioned processing after server cooling are performed. A hot aisle 3 through which air flows is secured. Further, the floor 10F of the server room 10 has air permeability so that the wind from the underfloor blowing chamber 11 is blown out. The mist spraying devices 21 and 22 can spray micron level water vapor mist against the passing air.

  The outside air inlet 13 is opened in the lower wall of the return chamber 12, and the exhaust port 14 is opened in the upper wall of the return chamber 12. The first mist spraying device 21 is disposed immediately after the outside air inlet 13 upstream of the lower communication port 16 that connects the return chamber 12 and the underfloor blowing chamber 11, and the second mist spraying device 22 includes the return chamber. 12 is arranged between the upper part and the lower part.

  A dehumidifying material dehumidifying position 18A is set in the vicinity of the lower communication port 16 that connects the return chamber 12 and the underfloor blowing chamber 11, and a dehumidifying material 17 for dehumidifying the passing air is provided at the dehumidifying position 18A. Has been placed. In addition, a dehumidifying material regeneration position 18B is set near the upper communication port 15 that connects the return chamber 12 and the server room 10, and the dehumidifying material 17 in which the dehumidifying function is regenerated by the passing air at the regeneration position 18B. Is arranged. For example, the two dehumidifying materials 17 can be moved in the vertical direction along guides 18 extending in the vertical direction. When one of the dehumidifying materials 17 is moved to the dehumidifying position 18A, the other dehumidifying material 17 is regenerated. When moving to the position 18B and moving one of the dehumidifying materials 17 to the regeneration position 18B, the other dehumidifying material 17 moves to the dehumidifying position 18A so that the positions can be exchanged with each other. As the dehumidifying material 17, a polymer collecting material having excellent low temperature reproducibility is employed. This polymer collecting material can regenerate the dehumidifying function at a temperature of, for example, 20 ° C. to 80 ° C., and sufficiently recovers the dehumidifying function by exhausting after cooling a high temperature environment such as a computer room. Can do.

In addition, the air conditioning equipment includes an operation mode selection unit that selectively switches between the first operation mode and the second operation mode.
That is, in the first operation mode performed in the winter or some intermediate period shown in FIG. 1A, outside air is introduced from the outside air inlet 13 into the underfloor blowing chamber 11 and is discharged from the server room 10. In addition, air corresponding to the amount of outside air introduced from the outside air inlet 13 is discharged to the outside through the exhaust port 14, and the remaining air is returned to the underfloor blowing chamber 11 through the return chamber 12, and the second air is returned to the return air. The mist is sprayed by the mist spraying device 22. Further, in the second operation mode implemented in the summer or a part of the intermediate period shown in FIG. 1B, outside air is introduced from the outside air inlet 13 into the underfloor blowing chamber 11, and the first mist is blown to the introduced outside air. Mist is blown by the device 21 and the entire amount of air discharged from the server room 10 is discharged to the outside through the exhaust port 14.

  Thus, by switching the operation mode between winter and summer, the effect of outside air cooling can be exhibited throughout the year, and energy saving can be achieved. That is, in the winter season and a part of the middle season, by selecting the first operation mode, the low-temperature outside air dried from the outside air inlet 13 is introduced into the underfloor blowing chamber 11 and an amount of air corresponding to the introduced outside air amount is obtained. Is discharged from the exhaust port 14. Further, the remaining air is returned to the underfloor blowing chamber 11 through the return chamber 12, and mist is blown from the second mist blowing device 22 to the return air to perform humidification and cooling. At this time, since the mist is blown to the return air having a high temperature, the humidification efficiency can be increased, and the temperature and humidity of the server room 10 can be kept good. Also, in the summer and part of the middle period, by selecting the second operation mode, outside air is introduced from the outside air inlet 13 into the underfloor blowing chamber 11, and the introduced outside air is introduced from the first mist blowing device 21. The mist is sprayed to humidify and cool the outside air, and the exhaust from the server room 10 is exhausted outside without returning.

  Therefore, since the mist is blown by the first mist spraying device 21 to the outside air introduced from the outside air inlet 13 into the underfloor blowing chamber 11, the introduced outside air can be humidified and cooled. It can be used effectively and can save energy. Further, since the humidification efficiency can be improved by blowing mist to the return air having a high temperature exhausted from the server room 10 by the second mist spraying device 22, the humidity of the server room 10 is good particularly in winter. Can be kept in.

  Further, in this air conditioning equipment, since the outside air inlet 13 opens in the lower wall of the return chamber 12, the return air that has passed through the return chamber 12 and the outside air introduced from the outside air inlet 13 are used as the return chamber. 12 can be introduced into the underfloor blowing chamber 11 while mixing in the lower space. At that time, mainly in summer, the outside air can be humidified and cooled by blowing the mist to the introduced outside air by the first mist blowing device 21 disposed immediately after the outside air inlet 13. Further, since the exhaust port 14 is opened in the upper wall of the return chamber 12, the air discharged from the server room 10 is divided into the exhaust discharged from the exhaust port 14 and the return air, and the return air is returned. It can be distributed to the chamber 12. At that time, mainly in winter, the return air is efficiently humidified by blowing the mist to the return air having a high temperature by the second mist spraying device 22 disposed between the upper part and the lower part of the return chamber 12. Can be cooled. In addition, the air humidified by the first or second mist spraying device 22 is dehumidified by the dehumidifying material 17 in the vicinity of the lower communication port 16 and then introduced into the underfloor blowing chamber 11. The maintained conditioned air can be supplied to the server room 10. In addition, since the high-temperature air discharged from the server room 10 passes through the dehumidifying material 17 disposed at the regenerating position near the upper communication port 15, the dehumidifying function of the dehumidifying material 17 can be regenerated.

  Further, in this air conditioning equipment, since the dehumidifying material 17 disposed at the dehumidifying position 18A and the dehumidifying material 17 disposed at the regeneration position 18B can be exchanged, the dehumidifying material 17 having the dehumidifying capacity saturated is disposed at the regeneration position 18B, The dehumidifying material 17 that has already been dehumidified by being placed at the regenerating position can be disposed at the dehumidifying position 18A, so that the dehumidifying capacity can be continuously exhibited. In addition, since a polymer collecting material superior in low-temperature reproducibility compared to silica gel or zeolite is used as a dehumidifying material, the dehumidifying function can be sufficiently regenerated by exhausting at a higher temperature discharged from the server room 10. it can.

  As described above, according to this air conditioning system, the inside of the server room 110 in which a large number of electronic devices such as servers with high heat generation are installed is effectively utilized by using the outside air cooling, so that an appropriate operating environment can be achieved while saving energy. Can be kept in.

Second Embodiment
FIG. 2 is a diagram showing the configuration of the air conditioning equipment and the air flow of the second embodiment, where (a) is a plan view of the air conditioning equipment, and (b) and (c) are sectional views taken along the line IIbc-IIbc of (a). (B) is a diagram showing the air flow in the first operation mode executed mainly in winter by arrows, and (b) is the air flow in the second operation mode executed mainly in summer. FIG. FIG. 3 is an air line diagram used for explaining the operation of the second embodiment.

  This air conditioning equipment is arranged under an air conditioning target room (hereinafter referred to as a “server room”) 110 that is a computer room of a data center in which high-heat-generating electronic devices such as servers are installed, and a floor 110F of the server room 110. The underfloor blowing chamber 111 that blows the conditioned air into the server room 110 through the floor 110F, the outside air inlet 113 that introduces outside air into the underfloor blowing chamber 111, and the outside air that is introduced into the underfloor blowing chamber 111 from the outside air inlet 113 A first mist spraying device (first mist nozzle) 121 for spraying mist on the exhaust, an exhaust port 114 for exhausting the air in the server room 110 to the outside, and an outer communication wall disposed outside the wall 110W of the server room 110. 115A communicates with the upper space of the server room 110, and communicates with the lower floor blowing chamber 111 through the lower communication port 116A. A first return chamber 112A for returning air discharged from the server room 110 through 15A to the underfloor blowing chamber through the lower communication port 116A, and a second mist for blowing mist to the return air passing through the first return chamber 112A The spray device (second mist nozzle) 122 is provided outside the wall 110W of the server room 110 and the first return chamber 112, and communicates with the upper space of the server room 110 through the upper communication port 115B and the lower communication. A second return chamber 112B that communicates with the underfloor blowing chamber 111 through the port 116B, returns air discharged from the server chamber 110 through the upper communicating port 115B to the underfloor blowing chamber 111 through the lower communicating port 116B, and a second return chamber. Installed in 112B, upper communication Includes a air conditioner 150 to be sent to the floor outlet chamber 111 through the lower communication opening 116B on in harmony process the air discharged from the server room 110, the through 115B.

  Inside the server room 110, a plurality of server racks 101 are arranged at intervals. Further, the floor 110F of the server room 110 has air permeability so that the wind from the underfloor blowing chamber 111 is blown out. The mist spraying devices 121 and 122 can spray micron level water vapor mist against the passing air.

  The outside air inlet 113 is opened in the lower wall of the first return chamber 112A, and the exhaust port 114 is opened in the upper wall of the first return chamber 112A. The first mist spraying device 121 is disposed immediately after the outside air inlet 113 upstream of the lower communication port 116A that communicates the first return chamber 112 and the underfloor blowing chamber 111, and the second mist spraying device 122 is The first return chamber 112 is disposed between the upper part and the lower part thereof.

  Further, a dehumidifying position 118A for the dehumidifying material is set in the vicinity of the lower communication port 116A that connects the second return chamber 112B and the underfloor blowing chamber 111, and the dehumidifying position 118A is used for dehumidifying the passing air. A material 117 is arranged. Further, a dehumidifying material regeneration position 118B is set in the vicinity of the upper communication port 115B that connects the second return chamber 112 and the server room 110, and the dehumidifying function is regenerated by the passing air at the regeneration position 118B. A dehumidifying material 117 is provided. For example, the two dehumidifying materials 117 can move in the vertical direction along guides 118 that extend in the vertical direction. When one dehumidifying material 117 is moved to the dehumidifying position 118A, the other dehumidifying material 117 is regenerated. When the dehumidifying material 117 is moved to the position 118B and one dehumidifying material 117 is moved to the regeneration position 118B, the other dehumidifying material 117 is moved to the dehumidifying position 118A so that the positions can be exchanged with each other. As the dehumidifying material 117, a polymer collecting material excellent in low temperature reproducibility is employed. This polymer collecting material can regenerate the dehumidifying function at a temperature of, for example, 20 ° C. to 80 ° C., and sufficiently recovers the dehumidifying function by exhausting after cooling a high temperature environment such as a computer room. Can do.

  In this case, the server room 110 is configured as a rectangular room in plan view, and the first return chamber 112A is provided outside one opposing two walls of the server room 110 and the other two opposing walls of the server room 110. Is provided with a second return chamber 112B. The air that has passed through the lower communication port 116A of the first return chamber 112A and the air that has passed through the lower communication port 116B of the second return chamber 112B are mixed in the underfloor blowing chamber 111 and then blown into the server room 110. It has come to be.

In addition, the air conditioning equipment includes an operation mode selection unit that selectively switches between the first operation mode and the second operation mode.
That is, in the first operation mode that is performed in the winter or some intermediate period shown in FIG. 2B, outside air is introduced into the underfloor blowing chamber 111 from the outside air inlet 113, and the air discharged from the server chamber 110 is Then, air corresponding to the amount of outside air introduced from the outside air inlet 113 is discharged to the outside through the exhaust port 114, and the remaining air is returned to the underfloor blowing chamber 111 through the first return chamber 112A. The mist is sprayed by the second mist spraying device 122. In addition, in the second operation mode that is performed in the summer or a part of the intermediate period shown in FIG. 2C, outside air is introduced from the outside air inlet 113 into the underfloor blowing chamber 111, and the first mist is blown to the introduced outside air. Mist is blown by the device 121 and, of the air exhausted from the server room 110, an amount of air corresponding to the amount of external air introduced from the external air inlet 113 is exhausted to the outside through the exhaust port 114, and the remaining air is exhausted. The air is returned to the underfloor blowing chamber 111 while being conditioned by the air conditioner 150 through the second return chamber 112B. At that time, the passing air is dehumidified by the dehumidifying material 117 disposed in the lower communication port 116B of the second return chamber 112B. The dehumidifying function of the dehumidifying material 117 disposed in the upper communication port 115B of the second return chamber 112B is regenerated by the passing air.

  Thus, by switching the operation mode between winter and summer, the effect of outside air cooling can be exhibited throughout the year, and energy saving can be achieved. That is, in a part of winter and intermediate periods, by selecting the first operation mode, the low-temperature outside air dried from the outside air inlet 113 is introduced into the underfloor blowing chamber 111, and an amount of air corresponding to the amount of outside air introduced. Is discharged from the exhaust port 114. Further, the remaining air is returned to the underfloor blowing chamber 111 through the first return chamber 112, and mist is blown from the second mist blowing device 122 to the humidified and cooled air. At this time, since the mist is blown to the return air having a high temperature, the humidification efficiency can be improved, and the temperature and humidity of the server room 110 can be kept good. Also, in the summer and part of the middle period, by selecting the second operation mode, outside air is introduced into the underfloor blowing chamber 111 from the outside air inlet 113, and the introduced outside air is introduced from the first mist blowing device 121. Spray mist to humidify and cool the outside air. Thus, since the cooling effect is exhibited by spraying mist, energy saving can be achieved. In addition, of the exhaust from the air conditioning target room, an amount of air commensurate with the amount of outside air introduced from the outside air inlet 113 is discharged to the outside through the exhaust port, and the remaining air is discharged to the air conditioner 150 through the second return chamber 112B. Is returned to the underfloor blowing chamber 111 while being harmonized. At that time, the passing air is dehumidified by the dehumidifying material 117 disposed at the lower communication port 116B of the second return chamber 112B, and the dehumidifying function of the dehumidifying material 117 disposed at the upper communication port 115B of the second return chamber 112B is passed through. To play. By doing so, the air conditioner 150 can supplement the capacity that is not sufficient in the outside air cooling, and the server room 110 can be maintained in a favorable temperature and humidity environment.

  Further, in this air conditioning equipment, since the outside air inlet 113 is opened in the lower wall of the first return chamber 112A, the return air introduced through the first return chamber 112 and the outside air inlet 113 are introduced. The outside air can be introduced into the underfloor blowing chamber 111 while being mixed in the lower space of the first return chamber 112. At that time, mainly in summer, the outside air can be humidified and cooled by blowing the mist to the introduced outside air by the first mist blowing device 121 arranged immediately after the outside air inlet 113. In addition, since the exhaust port 114 is opened in the upper wall of the first return chamber 112, the air exhausted from the server chamber 110 is divided into the exhaust exhausted from the exhaust port 114 and the return air. Air can be passed through the first return chamber 112. At that time, mainly in winter, the mist is blown against the return air having a high temperature by the second mist spraying device 122 disposed between the upper part and the lower part of the first return chamber 112 so that the return can be efficiently performed. Air can be humidified and cooled.

  Further, in this air conditioning equipment, a second return chamber 112B provided with an air conditioner 150 is provided separately from the first return chamber 112A provided with the mist spraying devices 121 and 122, and the second return chamber 112B is provided. Since the dehumidifying material 117 is disposed in the vicinity of the lower communication port 116B of the chamber 112B, for example, in summer, return air that has been conditioned and dehumidified by the air conditioner 150 and mist spraying by the first mist spraying device 121 are performed. While the humidified and cooled outside air is mixed in the underfloor blowing chamber 111, the server chamber 110 can be supplied with air. In addition, the first return chamber 112A for outside air cooling is arranged outside one opposing two walls of the rectangular server room 110 in plan view, and the second return is provided with an air conditioner 150 outside the other opposing two walls. Since the chamber 112B is arranged and the return air and the outside air passing through the first return chamber 112A and the second return chamber 112B are merged in the underfloor blowing chamber 111, air conditioning is performed for the insufficient cooling while effectively utilizing the outside air cooling. Can be supplemented with a machine.

  Further, in this air conditioning equipment, since the dehumidifying material 117 disposed at the dehumidifying position 118A and the dehumidifying material 117 disposed at the regenerating position 118B can be exchanged, the dehumidifying material 117 whose dehumidifying capacity is saturated is disposed at the regenerating position 118B, The dehumidifying material 117 that has already been disposed at the regeneration position and has been dehumidified can be disposed at the dehumidification position 118A, so that the dehumidification capacity can be continuously exhibited. In addition, since a polymer collecting material superior in low-temperature reproducibility compared to silica gel or zeolite is used as the dehumidifying material, the dehumidifying function can be sufficiently regenerated by exhausting at a higher temperature discharged from the server room 110. it can.

  As described above, according to this air conditioning system, the inside of the server room 110 in which a large number of electronic devices such as servers with high heat generation are installed is effectively utilized by using the outside air cooling, so that an appropriate operating environment can be achieved while saving energy. Can be kept in.

This will be described below with reference to the air diagram of FIG.
In the air diagram, the basic line XX indicates the supply temperature / humidity to the server room 110 and the exhaust temperature / humidity. Air supply and exhaust to the server room 110 basically moves on the basic line XX. For example, assuming that the air supply condition to the server room 110 is a temperature of 17 ° C. and a humidity of 70%, the exhaust from the server room 110 has a temperature of 30 ° C. and a humidity of 32%, depending on the heat generation state of the server room 110.

  When the outside air is in the state c on the air diagram as in winter, the vehicle is operated as follows. That is, in the region where the outside air is below the basic line XX, the operation mode is the humidification operation mode. In that case, outside air is taken in from the outside air inlet 113 and the same amount of air as the outside air taken in is discarded from the exhaust port 114. The return air enters the first return chamber 112A, is humidified by the second mist spraying device 122, is mixed with the outside air taken in from the outside air inlet 113, and the mixed air is discharged from the underfloor blowing chamber 111. It is supplied to the server room 110. At that time, the air diagram moves to the state d when the return air in the state b is humidified. Since the outside air is in the state of c, d and c are mixed under the floor to satisfy the air supply condition of a.

  Further, when the outside air is in the state of f on the air diagram as in some intermediate periods, the operation is performed as follows. That is, in the region where the outside air is below the basic line XX, the operation mode is the humidification operation mode. In that case, outside air is taken in from the outside air inlet 113 and the same amount of air as the outside air taken in is discarded from the exhaust port 114. The return air enters the first return chamber 112A, is humidified by the second mist spraying device 122, is mixed with the outside air taken in from the outside air inlet 113, and the mixed air is sent from the underfloor blowing chamber 111 to the server. Supplied to the chamber 110. At this time, the air diagram moves to the state e when the return air in the state b is humidified. Since the outside air is in the state of f, e and f are mixed under the floor to satisfy the air supply condition of a.

  Further, when the outside air is in the state of g on the air diagram as in summer, the following operation is performed. That is, in a region where the outside air is above the basic line XX, the operation mode is a mixed operation mode of spray cooling and dehumidified cold air. In that case, outside air is taken in from the outside air inlet 113 and the same amount of air as the outside air taken in is discarded from the exhaust port 114. The outside air taken in from the outside air inlet 113 is spray-cooled by the first mist spraying device 121. On the other hand, the return air from the second return chamber 112 </ b> B is temperature-controlled by the air conditioner 150, dehumidified by the dehumidifying material 117, mixed with the spray-cooled outside air and the underfloor blowing chamber 111, and supplied to the server room 110. At that time, the movement of the air diagram is changed to the state of h when the outside air in the state of g is spray-cooled, and on the other hand, the cold air from the air conditioner 150 is dehumidified by the dehumidifying material 117 and becomes the state of i. And h are mixed under the floor to become j, and cold air is supplied from under the floor to the server room 110 under the condition of j.

  Further, when the outside air is in a state of k on the air diagram as in some intermediate periods, the operation is performed as follows. That is, in a region where the outside air is above the basic line XX, the operation mode is a mixed operation mode of spray cooling and dehumidified cold air. In that case, outside air is taken in from the outside air inlet 113 and the same amount of air as the outside air taken in is discarded from the exhaust port 114. The outside air taken in from the outside air inlet 113 is spray-cooled by the first mist spraying device 121. On the other hand, the return air from the second return chamber 112B is temperature-controlled by the air conditioner 150, dehumidified by the dehumidifying material 117, mixed with the spray-cooled outside air and the underfloor blowing chamber 111, and supplied to the server room 110. At that time, the movement of the air diagram is changed to the state l when the outside air in the state k is spray-cooled, and is changed to the state i when the cold air from the air conditioner 150 is dehumidified. Mixing under the floor results in a state of m, and the cool air from the server room 110 is supplied from under the floor under the air condition of m.

10 Server room (Air-conditioned room)
DESCRIPTION OF SYMBOLS 11 Underfloor blowing chamber 12 Return chamber 13 Outside air inlet 14 Exhaust port 15 Upper communication port 16 Lower communication port 17 Dehumidification material 18A Dehumidification position 18b Regeneration position 21 1st mist spraying device 22 2nd mist spraying device 110 Server room (air conditioning Target room)
111 Underfloor blowing chamber 112A First return chamber 112B Second return chamber 113 Outside air intake port 114 Exhaust ports 115A, 115B Upper communication port 116B, 116B Lower communication port 117 Dehumidifying material 118A Dehumidification position 118b Regeneration position 121 First mist spraying Device 122 Second mist spraying device 150 Air conditioner

Claims (9)

Air-conditioned rooms,
An underfloor blowing chamber that is arranged under the floor of the air conditioning target room and blows out air that has been conditioned through the floor and into the air conditioning target room;
An outside air inlet for introducing outside air into the underfloor blowing chamber;
A first mist spraying device for blowing mist to the outside air introduced from the outside air inlet into the underfloor blowing chamber;
An exhaust port for discharging the air of the air-conditioned room to the outside;
Arranged outside the wall of the air conditioning target room, communicated with the upper space of the air conditioning target room through the upper communication port, communicated with the underfloor blowing chamber through the lower communication port, and discharged from the air conditioning target room through the upper communication port A return chamber for returning the air to be returned to the blowout chamber under the floor through the lower communication port,
A second mist spraying device for spraying mist on return air passing through the return chamber;
Equipped with a,
Outside air is introduced into the underfloor blowing chamber from the outside air intake, and among the air discharged from the air-conditioning target chamber, an amount of air corresponding to the amount of outside air introduced from the outside air intake is passed to the outside through the exhaust port. A first operation mode in which the remaining air is returned to the underfloor blowing chamber through the return chamber, and mist is blown to the return air by the second mist blowing device;
Outside air is introduced into the underfloor blowing chamber from the outside air inlet, and mist is blown to the introduced outside air by the first mist blowing device, and the entire amount of air discharged from the air-conditioning target chamber is discharged to the outside through the exhaust port. A second mode of operation for discharging;
An air-conditioning facility comprising operation mode selection means for alternatively selecting . Air-conditioned rooms,
An underfloor blowing chamber that is arranged under the floor of the air conditioning target room and blows out air that has been conditioned through the floor and into the air conditioning target room;
An outside air inlet for introducing outside air into the underfloor blowing chamber;
A first mist spraying device for blowing mist to the outside air introduced from the outside air inlet into the underfloor blowing chamber;
An exhaust port for discharging the air of the air-conditioned room to the outside;
Arranged outside the wall of the air conditioning target room, communicated with the upper space of the air conditioning target room through the upper communication port, communicated with the underfloor blowing chamber through the lower communication port, and discharged from the air conditioning target room through the upper communication port A return chamber for returning the air to be returned to the blowout chamber under the floor through the lower communication port,
A second mist spraying device for spraying mist on return air passing through the return chamber;
With
The outside air inlet is opened in the lower wall of the return chamber, the exhaust port is opened in the upper wall of the return chamber;
The first mist spraying device is disposed immediately after the outside air inlet upstream of a lower communication port communicating the return chamber and the underfloor blowing chamber,
The second mist spraying device is disposed between the upper part and the lower part of the return chamber;
Further, a dehumidifying position of the dehumidifying material is set in the vicinity of the lower communication port communicating the return chamber and the underfloor blowing chamber, and a dehumidifying material for dehumidifying the passing air is disposed at the dehumidifying position,
In addition, a dehumidifying material regeneration position is set in the vicinity of the upper communication port that connects the return chamber and the air-conditioning target room, and a dehumidifying material in which the dehumidifying function is regenerated by passing air is disposed at the regeneration position. ,
Air conditioning equipment characterized by that. Outside air is introduced into the underfloor blowing chamber from the outside air intake, and among the air discharged from the air-conditioning target chamber, an amount of air corresponding to the amount of outside air introduced from the outside air intake is passed to the outside through the exhaust port. A first operation mode in which the remaining air is returned to the underfloor blowing chamber through the return chamber, and mist is blown to the return air by the second mist blowing device;
Outside air is introduced into the underfloor blowing chamber from the outside air inlet, and mist is blown to the introduced outside air by the first mist blowing device, and the entire amount of air discharged from the air-conditioning target chamber is discharged to the outside through the exhaust port. A second mode of operation for discharging;
The air conditioning equipment according to claim 2, further comprising an operation mode selection unit that selectively selects the air conditioner. Air-conditioned rooms,
An underfloor blowing chamber that is arranged under the floor of the air conditioning target room and blows out air that has been conditioned through the floor and into the air conditioning target room;
An outside air inlet for introducing outside air into the underfloor blowing chamber;
A first mist spraying device for blowing mist to the outside air introduced from the outside air inlet into the underfloor blowing chamber;
An exhaust port for discharging the air of the air-conditioned room to the outside;
Arranged outside the wall of the air conditioning target room, communicated with the upper space of the air conditioning target room through the upper communication port, communicated with the underfloor blowing chamber through the lower communication port, and discharged from the air conditioning target room through the upper communication port A return chamber for returning the air to be returned to the blowout chamber under the floor through the lower communication port,
A second mist spraying device for spraying mist on return air passing through the return chamber;
With
A return chamber provided with the second mist spraying device is a first return chamber,
Separately from the first return chamber, outside the wall of the air conditioning target room, communicates with the upper space of the air conditioning target room through an upper communication port and communicates with the underfloor blowing chamber through a lower communication port, and communicates with the upper communication port. A second return chamber is provided for returning air discharged from the air-conditioned room through the opening to the underfloor blowing chamber through the lower communication port;
In the second return chamber, an air conditioner that arranges air discharged from the air-conditioning target chamber through the upper communication port and then sends the air to the underfloor blowing chamber through the lower communication port is disposed,
A dehumidifying position of the dehumidifying material is set in the vicinity of a lower communication port communicating the second return chamber and the underfloor blowing chamber, and a dehumidifying material for dehumidifying the passing air is disposed at the dehumidifying position;
A dehumidifying material regeneration position is set in the vicinity of the upper communication port that communicates the second return chamber and the air-conditioning target room, and a dehumidifying material that regenerates the dehumidifying function by passing air is disposed at the regeneration position. Yes,
Air conditioning equipment characterized by that. Outside air is introduced into the underfloor blowing chamber from the outside air intake, and among the air discharged from the air-conditioning target chamber, an amount of air corresponding to the amount of outside air introduced from the outside air intake is passed to the outside through the exhaust port. A first operation mode in which the remaining air is returned to the underfloor blowing chamber through the first return chamber, and mist is blown to the return air by the second mist blowing device,
The outside air is introduced from the outside air inlet into the underfloor blowing chamber, the mist is blown to the outside air to be introduced by the first mist blowing device, and the air discharged from the air conditioning target chamber is introduced from the outside air inlet. The amount of air commensurate with the amount of outside air discharged is exhausted to the outside through the exhaust port, and the remaining air is returned to the underfloor blowing chamber while being conditioned by the air conditioner through the second return chamber, A second operation in which the passing air is dehumidified by the dehumidifying material disposed at the lower communication port of the second return chamber, and the dehumidifying function of the dehumidifying material disposed at the upper communicating port of the second return chamber is regenerated by the passing air. Mode,
The air-conditioning equipment according to claim 4, further comprising an operation mode selection unit that selectively selects. The air-conditioning target room is configured as a rectangular room in plan view, the first return chamber is provided outside one opposing two walls of the air-conditioning target room, and the outside of the other opposing two walls of the air-conditioning target room The second return chamber is provided,
The outside air inlet is opened in the lower wall of the first return chamber, the exhaust port is opened in the upper wall of the first return chamber;
The first mist spraying device is disposed immediately after the outside air inlet on the upstream side of a lower communication port communicating the first return chamber and the underfloor blowing chamber,
The second mist spraying device is disposed between the upper part and the lower part of the return chamber;
The air that has passed through the lower communication port of the first return chamber and the air that has passed through the lower communication port of the second return chamber are mixed in the underfloor blowing chamber and then blown into the air conditioning target chamber. The air conditioning equipment according to claim 4 or 5. The air conditioning equipment according to any one of claims 2 to 6, wherein the dehumidifying material at the dehumidifying position and the dehumidifying material at the regeneration position are arranged so that positions can be exchanged with each other. .   The air conditioning equipment according to claim 7, wherein the dehumidifying material is made of a polymer collecting material.   The air-conditioning equipment according to any one of claims 1 to 8, wherein the air-conditioning target room is a computer room of a data center in which a highly heat-generating electronic device such as a server is installed.

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