JP2021085568A - Air conditioning structure - Google Patents

Abstract

To reduce vibration of a floor surface of an air-conditioned room.SOLUTION: An air conditioning structure 20 includes: a precast floor slab 32 having multiple through-holes 34 and forming a floor 30 of an air-conditioned room 22; a blowout port unit 40 installed to the through-holes 34; and an air conditioner 70 for blowing air-conditioning air to the air-conditioned room 22 via the blowout port unit 40 from an underfloor space of the precast floor slab 32.SELECTED DRAWING: Figure 1

Description

The present invention relates to an air conditioning structure.

An air conditioning system that blows air conditioning air from an air conditioner to a server room through an underfloor air blowing chamber in the server room and an outlet (intake port) on the floor surface of the server room is known (see, for example, Patent Document 1). ).

Japanese Unexamined Patent Publication No. 2011-196671

Although the technique disclosed in Patent Document 1 can improve the air conditioning efficiency of an air conditioning room such as a server room, the floor surface (outlet) of the air conditioning room is formed by grating. Therefore, there is room for improvement in that the floor surface of the air conditioning room tends to vibrate.

An object of the present invention is to reduce the vibration of the floor surface of the air conditioning chamber in consideration of the above facts.

The air conditioning structure according to claim 1 has a plurality of through holes, and the precast floor slab forming the floor of the air conditioning chamber, the outlet unit provided in the through holes, and the underfloor space of the precast floor slab are described. An air conditioner for blowing conditioned air to the air conditioning room via an outlet unit is provided.

According to the air-conditioning structure according to claim 1, the precast floor slab has a plurality of through holes and forms the floor of the air-conditioning room. An outlet unit is provided in the through hole of this precast deck. In addition, the air conditioner blows conditioned air from the underfloor space of the precast deck to the air conditioning room via the outlet unit. As a result, the air conditioning room is air-conditioned.

Here, as described above, the floor of the air conditioning room is formed by a precast deck. Thereby, in the present invention, the vibration of the floor of the air conditioning room is reduced as compared with the case where the floor of the air conditioning room is formed by grating. Further, in the present invention, the load capacity of the floor of the air conditioning room is increased as compared with the case where the floor of the air conditioning room is formed by grating.

Further, in the present invention, as compared with the case where the floor of the air conditioning chamber is formed of cast-in-place concrete, the workability can be improved, and the dimensional accuracy and the arrangement accuracy of the through holes can be improved.

The air-conditioning structure according to claim 2 has a base portion supported by the precast deck in a state of being arranged in the through hole in the air-conditioning structure according to claim 1, and is installed in the air-conditioning chamber. It is equipped with a sensor support column that supports the air conditioning sensor.

According to the air conditioning structure according to claim 2, the sensor column supports the air conditioning sensor installed in the air conditioning room. Further, the sensor support column has a base portion. The base is supported by the precast deck while being placed in the through hole. As a result, when the sensor column is about to fall, the outer peripheral portion of the base portion comes into contact with the inner peripheral surface of the through hole, so that the sensor column is suppressed from falling.

Further, for example, the arrangement of the air conditioning sensor can be easily changed by selecting the through hole for arranging the base portion from the plurality of through holes according to the layout of the heat generating equipment installed in the air conditioning room. Can be done.

The air-conditioning structure according to claim 3 is the air-conditioning structure according to claim 1 or 2, wherein the outlet unit is provided in a part of a plurality of the through holes, and the outlet unit is provided. A shield that closes the through hole is provided in the through hole.

According to the air conditioning structure according to claim 3, the outlet unit is provided in a part of a plurality of through holes. Further, a shield for closing the through hole is provided in the through hole where the outlet unit is not provided.

Here, for example, by changing the arrangement and number of the outlet unit and the shield according to the layout of the heat generating equipment installed in the air conditioning room, the arrangement and number of the outlets of the precast deck can be easily arranged. Can be changed to.

The air-conditioning structure according to claim 4 is the air-conditioning structure according to any one of claims 1 to 3, which has a return air port and is provided along the wall of the air-conditioning chamber. The air conditioner is provided in the underfloor space, and is provided with a flow path portion for connecting the air conditioner and the underfloor space.

According to the air-conditioning structure according to claim 4, the flow path portion has a return air port, is provided along the wall of the air-conditioning room, and connects the air-conditioning room and the underfloor space of the precast deck. Air in the air conditioning room flows into the underfloor space of the precast deck through this flow path.

In addition, an air conditioner will be installed in the underfloor space. As a result, the air flowing from the air conditioner room to the underfloor space through the flow path portion is air-conditioned by the air conditioner and then blown again from the outlet to the air conditioner room.

By circulating air between the air-conditioning room and the underfloor space in this way, the air-conditioning efficiency of the air-conditioning room can be improved.

Further, as described above, the flow path portion is provided along the wall of the air conditioning chamber. Thereby, in the present invention, as compared with the case where the return duct or the like is suspended from the ceiling of the air conditioning room, for example, when the layout of the heat generating device or the like installed in the air conditioning room is changed or updated, the heat generating device or the like is placed in the flow path portion. It becomes difficult to interfere. Therefore, it becomes easy to change or update the layout of the heat generating device or the like.

As described above, according to the air conditioning structure according to the present invention, it is possible to reduce the vibration of the floor surface of the air conditioning room.

It is a vertical sectional view which shows the structure to which the air-conditioning structure which concerns on one Embodiment is applied. (A) is a plan view showing the outlet unit attached to the through hole of the precast deck shown in FIG. 1, and (B) is a sectional view taken along line 2B-2B of FIG. 2 (A). (A) is a plan view showing a shielding unit attached to the through hole of the precast deck shown in FIG. 1, and (B) is a sectional view taken along line 3B-3B of FIG. 3 (A). It is a vertical cross-sectional view which shows the state before the sensor pole is attached to the through hole of the precast deck shown in FIG. It is a vertical cross-sectional view which shows the state which the sensor pole is attached to the through hole of the precast floor slab shown in FIG.

Hereinafter, the air conditioning structure according to the embodiment will be described with reference to the drawings.

(Air conditioning structure)
FIG. 1 shows a structure (building) 10 to which the air conditioning structure 20 according to the present embodiment is applied. The structure 10 is, for example, a factory that produces electronic parts, mechanical parts, and the like. An air conditioning room 22 is provided on a predetermined floor of the structure 10. In the air conditioning room (production room) 22, a plurality of heat generating devices (heat sources) (heat sources) (not shown) that produce electronic parts, mechanical parts, and the like are installed. The air conditioning structure 20 according to the present embodiment is applied to the air conditioning chamber 22.

The air conditioning structure 20 is a pressurized floor blowing air conditioner that blows out air conditioning air W upward from an outlet 48A (see FIG. 2) provided on the floor 30 of the air conditioning room 22, and an air conditioner 70 under the floor of the air conditioning room 22. It is a two-layer air conditioner equipped with a plenum space (equipment room) 24 in which such equipment can be installed. The air conditioning structure 20 includes a plurality of precast floor slabs 32 that form the floor 30 of the air conditioning chamber 22. The plenum space 24 is an example of an underfloor space.

(Precast floor slab)
The plurality of precast floor slabs 32 are made of reinforced concrete. These precast decks 32 are arranged horizontally and are supported by columns 12 provided in the plenum space 24 and a plurality of beams (not shown) erected on the columns 12.

A plurality of through holes 34 are formed in the precast deck 32. The through hole 34 is a circular hole that penetrates the precast deck 32 in the thickness direction. The through hole 34 is formed in advance in the precast deck 32, for example, in a factory or the like. An opening reinforcing material (opening reinforcing bar, etc.) (not shown) is appropriately provided around the through hole 34 of the precast deck 32.

In the plurality of through holes 34, depending on the amount of air-conditioned air W required for the air-conditioned room 22 and the layout of the heat generating device installed in the air-conditioned room 22, the outlet unit 40 (see FIG. 2B) or A shielding unit 50 (see FIG. 3B) is provided.

(Outlet unit)
As shown in FIGS. 2A and 2B, the outlet unit 40 is detachably attached to the through hole 34. The outlet unit 40 has a mounting ring 42, a falling object basket 44, and an outlet cover 48.

The mounting ring 42 has a tubular portion 42A and a flange portion 42B. The tubular portion 42A is formed in a cylindrical shape and is inserted into the through hole 34 from the upper surface side of the precast deck 32. A flange portion 42B is provided at the upper end portion of the tubular portion 42A.

The flange portion 42B projects outward from the upper end portion of the tubular portion 42A along the upper surface of the precast deck 32, and is hooked on the peripheral edge portion of the through hole 34. As a result, the mounting ring 42 is detachably held on the precast deck 32. A falling object basket 44 is attached to the tubular portion 42A of the attachment ring 42.

The falling object basket 44 captures the falling object that has fallen into the outlet unit 40 from the outlet 48A of the outlet cover 48, which will be described later. The falling object basket 44 has a tubular portion 44A and a bottom portion 44B. The tubular portion 44A is formed in a cylindrical shape and is inserted into the through hole 34. Further, the upper end side of the tubular portion 44A is open.

The upper portion of the tubular portion 44A is fixed to the tubular portion 42A by a screw or the like (not shown) in a state of being fitted inside the tubular portion 42A of the mounting ring 42. Further, the lower portion of the tubular portion 42A projects downward from the lower surface of the precast deck 32 in a state of being inserted into the through hole 34, and is arranged in the plenum space 24. A bottom portion 44B is provided at the lower end portion of the tubular portion 44A.

The bottom portion 44B is formed in a disk shape. The bottom portion 44B closes the opening on the lower end side of the tubular portion 44A. As a result, the falling object that has fallen into the outlet unit 40 from the outlet 48A of the outlet cover 48 is captured in the falling object basket 44, so that the falling object is suppressed from falling into the plenum space 24. The falling object basket 44 can be omitted.

A plurality of intake ports 46 are formed in the lower portion of the tubular portion 44A. The plurality of intake ports 46 are arranged at intervals in the circumferential direction of the tubular portion 44A. The conditioned air W in the plenum space 24 is supplied into the tubular portion 44A through these intake ports 46.

A blowout cover 48 is provided inside the mounting ring 42. The blowout cover 48 is formed in a disk shape. The blowout cover 48 is detachably fitted inside the mounting ring 42 so as not to protrude toward the air conditioning chamber 22 from the mounting ring 42. As a result, the floor 30 of the air conditioning chamber 22 is made substantially flat.

A plurality of outlets 48A are formed in the outlet cover 48. The plurality of outlets 48A are formed in a slit shape and are arranged radially around the central portion of the outlet cover 48. From these outlets 48A, the conditioned air W in the tubular portion 44A is blown out to the conditioned chamber 22.

The shape, arrangement, and number of the outlets 48A can be changed as appropriate. Further, the outlet unit 40 may be provided with, for example, an air volume adjusting damper that increases or decreases the amount of air-conditioned air W blown out from the outlet 48A, a shutter that opens and closes the outlet 48A, and the like. Further, the falling object basket 44 can be omitted as appropriate.

Of the plurality of through holes 34, the shielding unit 50 (see FIG. 3B) or the sensor pole 60 (see FIG. 4) is detachably attached to the through hole 34 in which the outlet unit 40 is not provided. ing.

(Shielding unit)
As shown in FIGS. 3A and 3B, the shielding unit 50 shields (closes) the through hole 34 to form the floor surface of the air conditioning chamber 22. The shielding unit 50 has a mounting ring 52 and a shielding cover 54. The mounting ring 52 has the same configuration as the mounting ring 42 of the outlet unit 40. The shielding unit 50 has a tubular portion 52A and a flange portion 52B.

A shielding cover 54 is provided inside the mounting ring 52. The shielding cover 54 is formed in a disk shape. The shielding cover 54 is detachably fitted inside the mounting ring 52 so as not to protrude toward the air conditioning chamber 22 from the mounting ring 52. As a result, the floor 30 of the air conditioning chamber 22 is made substantially flat.

The shielding cover 54 has no opening. That is, the shielding cover 54 is not formed with an outlet. The through hole 34 is shielded by the shielding cover 54. Therefore, the conditioned air W in the plenum space 24 is not blown out to the conditioned chamber 22 from the through hole 34 provided with the shielding cover 54.

(Sensor pole)
As shown in FIGS. 4 and 5, the sensor pole 60 supports the air conditioning sensor 68, which will be described later, in a state of being detachably attached to the through hole 34. The sensor pole 60 has a base portion 62, a strut portion 64, and a sensor mounting portion 66. The sensor pole 60 is an example of a sensor support column.

The base portion 62 is formed of, for example, a metal plate or the like, and has a weight capable of suppressing the fall of the sensor pole 60. Further, the base portion 62 is supported by the precast deck 32 in a state of being arranged in the through hole 34 of the precast deck 32. The base portion 62 has a base main body 62A, an upper flange 62B, and a lower flange 62C.

The base body 62A is formed in a cylindrical shape, and is inserted into the through hole 34 with the axial direction as the thickness direction (vertical direction) of the precast deck 32. An upper flange 62B is provided at the upper end of the base body 62A. On the other hand, a lower flange 62C is provided at the lower end of the base body 62A.

The upper flange 62B is formed in a disk shape and closes the opening on the upper end side of the base body 62A. Further, the outer peripheral portion of the upper flange 62B projects outward from the upper end portion of the base body 62A along the upper surface of the precast deck 32, and is hooked on the peripheral edge portion of the through hole 34. As a result, the base portion 62 is held by the precast floor slab 32.

The lower flange 62C is formed in a disk shape having a diameter smaller than that of the upper flange 62B, and closes the opening on the lower end side of the base body 62A. Further, the lower flange 62C is fitted in the through hole 34. Specifically, the outer peripheral portion of the lower flange 62C projects outward from the lower end portion of the base body 62A and is close to the inner peripheral surface 34A of the through hole 34. When the outer peripheral portion of the lower flange 62C comes into contact with the inner peripheral surface 34A of the through hole 34, the inclination of the base portion 62 is suppressed.

The lower flange 62C may be provided with a stopper or the like that comes into contact with the inner peripheral surface 34A of the through hole 34 and suppresses the inclination of the base portion 62.

As shown in FIG. 5, the support column portion 64 is formed in a rod shape and stands on the base portion 62. The lower portion of the support column portion 64 is held by the base portion 62 in a state of being inserted into a through hole formed in the upper flange 62B of the base portion 62. Further, the upper portion of the support column portion 64 extends upward from the base portion 62 and is arranged in the air conditioning chamber 22. A sensor mounting portion 66 is provided on the upper portion of the strut portion 64.

The sensor mounting portion 66 is formed in a box shape. An air conditioning sensor 68 is attached to at least one side surface 66S of the sensor attachment portion 66.

(Air conditioning sensor)
The air conditioning sensor 68 is, for example, a temperature sensor that measures the temperature of the air conditioning room 22, a humidity sensor that measures the humidity of the air conditioning room 22, or a differential pressure sensor that measures the differential pressure between the air conditioning room 22 and the plenum space 24. There is.

The air conditioning sensor 68 is electrically connected to the air conditioner 70. The air conditioning sensor 68 outputs the measured environmental information such as the temperature and humidity of the air conditioning chamber 22 or the differential pressure between the air conditioning chamber 22 and the plenum space 24 to the air conditioner 70.

(air conditioner)
The air conditioner 70 is installed in a plenum space (underfloor space) 24 formed under the floor of the air conditioner room 22. The plenum space 24 can be regarded as, for example, an equipment room in which a person who installs equipment, wiring, piping, etc. can enter.

The air conditioner 70 generates air-conditioned air W whose temperature and humidity are adjusted based on the environmental information of the air-conditioned room 22 measured by the above-mentioned air-conditioning sensor 68, and uses the generated air-conditioned air W as a predetermined air volume (pressure). ) To blow air. As a result, predetermined air conditioning air W is blown from the air conditioner 70 to the air conditioning chamber 22 via the plenum space 24 and the plurality of outlet units 40. A reflux duct 72 is connected to the air conditioner 70.

In the present embodiment, the pressure difference between the plenum space 24 and the air conditioning chamber 22 is measured, and the measured pressure difference is maintained at a predetermined value or within a predetermined range from the air conditioner 70 via the plenum space 24. The amount of air-conditioned air W blown to the air-conditioned room 22 is controlled.

(Reflux duct)
The return duct 72 is a duct that connects the air conditioning chamber 22 and the plenum space 24 and returns the air in the air conditioning chamber 22 to the plenum space 24. The return duct 72 extends in the vertical direction along the wall 22A that divides the air conditioning chamber 22, and is arranged across the air conditioning chamber 22 and the plenum space 24.

A return air port 74 is formed on the side surface of the upper part of the return duct 72. On the other hand, the lower end of the return duct 72 is connected to the air conditioner 70. As a result, the air in the air conditioner chamber 22 is returned from the return air port 74 to the air conditioner 70 via the return duct 72. The return duct 72 is an example of a flow path portion.

(Action)
Next, the operation of this embodiment will be described.

As shown in FIG. 1, the floor 30 of the air conditioning chamber 22 is formed by a plurality of precast decks 32. These precast decks 32 have a plurality of through holes 34. As shown in FIG. 2B, the outlet unit 40 is detachably attached to some of the through holes 34 among the plurality of through holes 34. Further, as shown in FIG. 3B, a shielding unit 50 is provided in the through hole 34 in which the outlet unit 40 is not provided among the plurality of through holes 34.

As a result, as shown in FIG. 1, when the air conditioner 70 installed in the plenum space 24 under the floor of the air conditioner room 22 is operated, the conditioned air W generated by the air conditioner 70 is generated in the plenum space 24 and a plurality. The air is blown to the air conditioning chamber 22 through the outlet unit 40 of the above. As a result, the air conditioning chamber 22 is air-conditioned.

Further, the conditioned air W blown from the plenum space 24 to the air conditioner chamber 22 is returned to the air conditioner 70 from the return air port 74 via the return duct 72. By circulating the conditioned air W between the air conditioner room 22 and the air conditioner 70 in this way, the air conditioning efficiency of the air conditioner room 22 is improved.

Here, as described above, the floor 30 of the air conditioning chamber 22 is formed by a plurality of precast floor slabs 32. Thereby, in the present embodiment, the vibration of the floor 30 of the air conditioning chamber 22 is reduced as compared with the case where the floor 30 of the air conditioning chamber 22 is formed by grating, for example. Further, in the present embodiment, the load capacity of the floor 30 of the air conditioning chamber 22 is increased as compared with the case where the floor 30 of the air conditioning chamber 22 is formed by grating.

Further, in the present embodiment, the workability of the floor 30 is improved as compared with the case where the floor 30 of the air conditioning chamber 22 is formed of cast-in-place concrete. Further, in the present embodiment, the placement accuracy of the through holes 34 can be improved as compared with the case where the floor 30 of the air conditioning chamber 22 is formed of cast-in-place concrete.

Moreover, in the present embodiment, the dimensional accuracy of the plurality of through holes 34 can be improved as compared with the case where the floor 30 of the air conditioning chamber 22 is formed of cast-in-place concrete. As a result, the outlet unit 40, the shielding unit 50, and the sensor pole 60 can be easily attached to and detached from each through hole 34.

Further, by changing the arrangement and number of the outlet unit 40 and the shielding unit 50 according to the layout and the like of the heat generating equipment installed in the air conditioning chamber 22, the arrangement and number of the outlet 48A of the precast floor slab 32 can be changed. Can be easily changed.

Further, the blowout cover 48 of the blowout port unit 40 and the shield cover 54 of the shield unit 50 do not project into the air conditioning chamber 22. Therefore, the heat generating device or the like can be easily installed in the air conditioning chamber 22, and the degree of freedom in the layout of the heat generating device or the like can be increased.

Here, the air conditioner 70 generates air-conditioned air W based on environmental information such as temperature measured by the air-conditioning sensor 68, and blows the generated air-conditioned air W at a predetermined air volume (pressure). As a result, predetermined air conditioning air W is blown from the air conditioner 70 to the air conditioning chamber 22 via the plenum space 24 and the plurality of outlet units 40.

As shown in FIG. 5, the air conditioning sensor 68 is attached to the sensor pole 60. The sensor pole 60 has a base portion 62. The base portion 62 is supported by the precast deck 32 in a state of being arranged in the through hole 34. As a result, when the sensor pole 60 is about to fall, the lower flange 62C of the base portion 62 comes into contact with the inner peripheral surface 34A of the through hole 34, so that the fall of the sensor pole 60 is suppressed.

Further, the base portion 62 is detachably attached to the through hole 34. Thereby, for example, the arrangement of the air conditioning sensor 68 can be easily changed by changing the through hole 34 in which the base portion 62 is installed according to the layout change of the heat generating device or the like installed in the air conditioning room 22. it can. Further, the mounting height of the air conditioning sensor 68 can be easily changed by appropriately changing the length of the support column portion 64.

Further, the return duct 72 is provided along the wall 22A of the air conditioning chamber 22. As a result, in the present embodiment, as compared with the case where the return duct or the like is suspended from the ceiling of the air conditioning room 22, the heat generating device or the like recirculates when the layout of the heat generating device or the like installed in the air conditioning room 22 is changed or updated. It becomes difficult to interfere with the duct 72. Therefore, it becomes easy to change or update the layout of the heat generating device or the like.

(Modification example)
Next, a modified example of the above embodiment will be described.

In the above embodiment, the air conditioner 70 is installed in the plenum space 24. However, the air conditioner 70 is not limited to the plenum space 24, and may be installed in, for example, a shaft connecting the air conditioner room 22 and the plenum space 24.

Further, in the above embodiment, the conditioned air W is circulated between the air conditioner room 22 and the plenum space 24 by the air conditioner 70. However, for example, the outside air of the structure 10 may be air-conditioned by the plenum space 24 or the external air conditioner installed on the shaft described above, and the conditioned air may be blown to the air-conditioning chamber 22 through the plenum space 24 and the outlet unit 40. It is possible. It is also possible to use the above-mentioned external air conditioner and the air conditioner 70 together.

Further, in the precast deck 32 of the above embodiment, a plurality of through holes 34 are formed in advance in a factory or the like. However, the through hole 34 can also be formed in the precast deck 32 in the field. In this case, an opening reinforcing material (opening reinforcing bar or the like) may be provided in advance at the portion of the precast deck 32 where the through hole 34 is expected to be provided in the future.

Further, in the above embodiment, the air conditioning sensor 68 is installed in the air conditioning chamber 22. However, the air conditioning sensor 68 may be installed in the air conditioning chamber 22 as needed, and can be omitted as appropriate.

Further, the air conditioning structure 20 according to the above embodiment can be appropriately applied not only to factories but also to, for example, data centers and other structures.

Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and one embodiment and various modifications may be used in combination as appropriate. Of course, it can be carried out in various modes as long as it does not deviate.

20 Air-conditioning structure 22 Air-conditioning room 22A Wall 24 Plenum space (underfloor space)
30 Floor 32 Precast floor slab 34 Through hole 40 Outlet unit 50 Shielding unit (shielding body)
60 Sensor pole (sensor support)
62 Base 68 Air conditioning sensor 70 Air conditioner 72 Reflux duct (flow path)
74 Return air port W Air-conditioned air

Claims (4)

A precast deck that has multiple through holes and forms the floor of the air conditioning room,
An outlet unit provided in the through hole and
An air conditioner that blows conditioned air from the underfloor space of the precast deck to the air conditioning chamber via the outlet unit, and
Air conditioning structure with. It has a base portion supported by the precast deck in a state of being arranged in the through hole, and is provided with a sensor support column for supporting an air conditioning sensor installed in the air conditioning chamber.
The air conditioning structure according to claim 1. The outlet unit is provided in a part of the plurality of through holes, and the outlet unit is provided in a part of the plurality of through holes.
A shield for closing the through hole is provided in the through hole to which the outlet unit is not provided.
The air conditioning structure according to claim 1 or 2. It has a return air port, is provided along the wall of the air conditioning chamber, and has a flow path portion that connects the air conditioning chamber and the underfloor space.
The air conditioner is provided in the underfloor space.
The air conditioning structure according to any one of claims 1 to 3.

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