JP7593562B2 - Air conditioning structure - Google Patents

Description

The present invention relates to an air conditioning structure.

There is known an air conditioning system in which conditioned air is blown into a server room from an air conditioning device through an air blowing chamber under the floor of the server room and an outlet (intake) on the floor of the server room (see, for example, Patent Document 1).

JP 2011-196671 A

The technology disclosed in Patent Document 1 can improve the air conditioning efficiency of air-conditioned rooms such as server rooms, but the floor surface (air outlet) of the air-conditioned room is formed by grating. Therefore, there is room for improvement in that the floor surface of the air-conditioned room is prone to vibration.

Taking the above facts into consideration, the present invention aims to reduce vibrations on the floor surface of an air-conditioned room.

The air conditioning structure of the first aspect comprises a precast floor slab having a plurality of through holes and forming the floor of an air-conditioning room, an air outlet unit provided in the through holes, and an air conditioner that blows conditioned air from the under-floor space of the precast floor slab through the air outlet unit to the air-conditioning room.

According to the air conditioning structure of the first aspect , the precast floor slab has a plurality of through holes and forms the floor of the air conditioning room. The through holes of the precast floor slab are provided with air outlet units. The air conditioner blows conditioned air from the underfloor space of the precast floor slab through the air outlet units to the air conditioning room. This conditions the air conditioning room.

As mentioned above, the floor of the air-conditioned room is formed from a precast deck. As a result, in the present invention, the vibration of the floor of the air-conditioned room is reduced compared to when the floor of the air-conditioned room is formed from grating. Also, in the present invention, the load-bearing capacity of the floor of the air-conditioned room is increased compared to when the floor of the air-conditioned room is formed from grating.

Furthermore, the present invention improves workability and increases the dimensional accuracy and placement accuracy of the through holes compared to when the floor of the air-conditioned room is formed using cast-in-place concrete.

The air conditioning structure of the second aspect is the air conditioning structure of the first aspect , which has a base portion supported by the precast deck while being positioned within the through hole, and is provided with a sensor support column supporting an air conditioning sensor installed in the air conditioning room.

According to the air conditioning structure of the second aspect , the sensor support supports the air conditioning sensor installed in the air conditioning room. The sensor support also has a base. The base is supported by the precast floor slab while being disposed in the through hole. As a result, when the sensor support tries to collapse, the outer periphery of the base comes into contact with the inner periphery of the through hole, thereby suppressing the collapse of the sensor support.

In addition, the placement of the air conditioning sensor can be easily changed by selecting the through hole in which to place the base from among multiple through holes depending on, for example, the layout of heat-generating equipment and the like to be installed in the air-conditioned room.

The air conditioning structure of the third aspect is the air conditioning structure of the first or second aspect , in which the air outlet unit is provided in some of the plurality of through holes, and a shield that blocks the through hole is provided in the through hole where the air outlet unit is not provided.

According to the air conditioning structure of the third aspect , the air outlet units are provided in some of the plurality of through holes. Also, a shield is provided in the through hole not provided with the air outlet unit to close the through hole.

Here, for example, the arrangement and number of the air outlets in the precast deck can be easily changed by changing the arrangement and number of the air outlet units and shields depending on the layout of heat-generating equipment installed in the air-conditioned room.

The air conditioning structure of the fourth aspect is the air conditioning structure of any one of the first to third aspects , which has a return air port, is provided along a wall of the air conditioning room, and is equipped with a flow path portion connecting the air conditioning room and the underfloor space, and the air conditioner is provided in the underfloor space.

According to the air conditioning structure of the fourth aspect , the flow path 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 floor slab. Air from the air conditioning room flows into the underfloor space of the precast floor slab through the flow path.

In addition, an air conditioner is provided in the underfloor space. This allows the air that flows from the air conditioning room through the flow path into the underfloor space to be conditioned by the air conditioner and then sent back into the air conditioning room through the air outlet.

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

As mentioned above, the flow path section is provided along the wall of the air-conditioned room. As a result, in the present invention, when changing the layout or updating the heat-generating equipment installed in the air-conditioned room, the heat-generating equipment is less likely to interfere with the flow path section, compared to, for example, a case in which a return duct or the like is suspended from the ceiling of the air-conditioned room. This makes it easier to change the layout or update the heat-generating equipment.

As described above, the air conditioning structure of the present invention can reduce vibrations on the floor surface of the air-conditioned room.

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

Below, an air conditioning structure according to one embodiment will be described with reference to the drawings.

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

The air conditioning structure 20 is a pressurized floor-blowout air conditioning system that blows conditioned air W upward from an outlet 48A (see FIG. 2) provided in the floor 30 of the air conditioning room 22, and is a two-layer air conditioning system that includes a plenum space (equipment room) 24 under the floor of the air conditioning room 22 in which equipment such as an air conditioner 70 can be installed. This air conditioning structure 20 includes multiple precast floor slabs 32 that form the floor 30 of the air conditioning room 22. The plenum space 24 is an example of an underfloor space.

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

The precast deck 32 has a number of through holes 34. The through holes 34 are circular holes that penetrate the precast deck 32 in the thickness direction. The through holes 34 are formed in advance in the precast deck 32, for example, in a factory. In addition, opening reinforcement materials (opening reinforcement bars, etc.) (not shown) are appropriately provided around the through holes 34 in the precast deck 32.

The multiple through holes 34 are provided with air outlet units 40 (see FIG. 2(B)) or shielding units 50 (see FIG. 3(B)) depending on the amount of conditioned air W required in the air-conditioned room 22 and the layout of the heat-generating equipment installed in the air-conditioned room 22.

(Air outlet unit)
2A and 2B, the air outlet unit 40 is detachably attached to the through hole 34. The air outlet unit 40 has an attachment ring 42, a basket for falling objects 44, and an air 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. The flange portion 42B is provided at the upper end of the tubular portion 42A.

The flange portion 42B protrudes outward from the upper end of the cylindrical portion 42A along the upper surface of the precast deck 32 and is hooked onto the periphery of the through hole 34. This allows the mounting ring 42 to be detachably held on the precast deck 32. A falling object basket 44 is attached to the cylindrical portion 42A of the mounting ring 42.

The basket for falling objects 44 captures falling objects that have fallen into the outlet unit 40 from the outlet 48A of the outlet cover 48, which will be described later. This basket for falling objects 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. The upper end side of the tubular portion 44A is open.

The upper part of the cylindrical part 44A is fitted inside the cylindrical part 42A of the mounting ring 42 and fixed to the cylindrical part 42A by screws (not shown) or the like. The lower part of the cylindrical part 42A, when inserted into the through hole 34, protrudes downward from the underside of the precast deck 32 and is disposed in the plenum space 24. A bottom part 44B is provided at the lower end of the cylindrical part 44A.

The bottom 44B is formed in a disk shape. The opening at the lower end of the tubular portion 44A is closed by this bottom 44B. As a result, any falling object that falls from the outlet 48A of the outlet cover 48 into the outlet unit 40 is captured in the falling object basket 44, preventing the falling object from falling into the plenum space 24. Note that the falling object basket 44 can be omitted.

A number of air intakes 46 are formed in the lower part of the cylindrical portion 44A. The air intakes 46 are arranged at intervals in the circumferential direction of the cylindrical portion 44A. Conditioned air W from the plenum space 24 is supplied into the cylindrical portion 44A through these air intakes 46.

A blow-out cover 48 is provided on the inside of the mounting ring 42. The blow-out cover 48 is formed in a disk shape. This blow-out cover 48 is removably fitted inside the mounting ring 42 so that it does not protrude further toward the air-conditioning chamber 22 than the mounting ring 42. This makes the floor 30 of the air-conditioning chamber 22 approximately flat.

The blow-out cover 48 is formed with a plurality of blow-out openings 48A. The plurality of blow-out openings 48A are formed in the shape of slits and are arranged radially around the center of the blow-out cover 48. The conditioned air W in the cylindrical portion 44A is blown out from these blow-out openings 48A into the air-conditioned room 22.

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

A shielding unit 50 (see FIG. 3B) or a sensor pole 60 (see FIG. 4) is removably attached to the through-holes 34 that do not have an air outlet unit 40 among the multiple through-holes 34.

(Shielding unit)
3(A) and 3(B), the shielding unit 50 shields (closes) the through-hole 34 to form the floor surface of the air-conditioning room 22. The shielding unit 50 has an attachment ring 52 and a shielding cover 54. The attachment ring 52 has a similar structure to the attachment ring 42 of the air outlet unit 40. The shielding unit 50 has a cylindrical portion 52A and a flange portion 52B.

A shielding cover 54 is provided on the inside of the mounting ring 52. The shielding cover 54 is formed in a disk shape. This shielding cover 54 is removably fitted inside the mounting ring 52 so that it does not protrude further toward the air-conditioning chamber 22 than the mounting ring 52. This makes the floor 30 of the air-conditioning chamber 22 approximately flat.

The shielding cover 54 has no opening. In other words, the shielding cover 54 has no air 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 into the air-conditioned room 22 from the through-hole 34 where the shielding cover 54 is provided.

(sensor pole)
4 and 5, the sensor pole 60 supports an air conditioning sensor 68 (described later) in a state in which it is detachably attached to the through-hole 34. The sensor pole 60 has a base portion 62, a support portion 64, and a sensor attachment portion 66. The sensor pole 60 is an example of a sensor support.

The base 62 is formed, for example, from a metal plate or the like, and has a weight capable of preventing the sensor pole 60 from falling over. The base 62 is supported by the precast deck 32 while being placed in the through hole 34 of the precast deck 32. The base 62 has a base 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 its axial direction in 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. Meanwhile, 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 at the upper end of the base body 62A. The outer periphery of the upper flange 62B protrudes outward from the upper end of the base body 62A along the upper surface of the precast deck 32 and is hooked onto the periphery of the through hole 34. This holds the base 62 to the precast deck 32.

The lower flange 62C is formed in a disk shape with a smaller diameter than the upper flange 62B, and closes the opening on the lower end side of the base body 62A. The lower flange 62C is fitted into the through hole 34. Specifically, the outer periphery of the lower flange 62C protrudes outward from the lower end of the base body 62A and is close to the inner periphery 34A of the through hole 34. The outer periphery of the lower flange 62C comes into contact with the inner periphery 34A of the through hole 34, thereby suppressing the tilt of the base part 62.

The lower flange 62C may be provided with a stopper or the like that contacts the inner circumferential surface 34A of the through hole 34 and prevents the base portion 62 from tilting.

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

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

The air conditioning sensor 68 is electrically connected to the air conditioner 70. This air conditioning sensor 68 outputs environmental information, such as the measured temperature and humidity of the air-conditioned room 22, or the differential pressure between the air-conditioned room 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-conditioned room 22. The plenum space 24 can also be regarded as, for example, an equipment room where equipment, wiring, piping, etc. are installed and where people can enter.

The air conditioner 70 generates conditioned air W with adjusted temperature and humidity based on the environmental information of the air-conditioned room 22 measured by the air-conditioning sensor 68 described above, and blows the generated conditioned air W at a predetermined air volume (pressure). This causes the predetermined conditioned air W to be blown from the air conditioner 70 to the air-conditioned room 22 via the plenum space 24 and the multiple air outlet units 40. A return duct 72 is connected to this air conditioner 70.

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

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

A return air port 74 is formed on the side of the upper part of the return duct 72. Meanwhile, the lower end of the return duct 72 is connected to the air conditioner 70. As a result, air from the air-conditioned room 22 is returned from the return air port 74 through the return duct 72 to the air conditioner 70. The return duct 72 is an example of a flow path.

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

As shown in FIG. 1, the floor 30 of the air-conditioning room 22 is formed of a plurality of precast floor slabs 32. These precast floor slabs 32 have a plurality of through holes 34. As shown in FIG. 2(B), air outlet units 40 are removably attached to some of the plurality of through holes 34. Also, as shown in FIG. 3(B), shielding units 50 are provided in the through holes 34 that do not have air outlet units 40 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-conditioning room 22 is operated, the conditioned air W generated by the air conditioner 70 is blown into the air-conditioning room 22 via the plenum space 24 and the multiple air outlet units 40. This causes the air-conditioning room 22 to be conditioned.

The conditioned air W sent from the plenum space 24 to the air-conditioned room 22 is returned to the air conditioner 70 through the return air port 74 and the return duct 72. By circulating the conditioned air W between the air-conditioned room 22 and the air conditioner 70 in this manner, the air-conditioning efficiency of the air-conditioned room 22 is improved.

As described above, the floor 30 of the air-conditioning room 22 is formed of a plurality of precast floor slabs 32. As a result, in this embodiment, the vibration of the floor 30 of the air-conditioning room 22 is reduced, for example, compared to when the floor 30 of the air-conditioning room 22 is formed of grating. Furthermore, in this embodiment, the load-bearing capacity of the floor 30 of the air-conditioning room 22 is increased, compared to when the floor 30 of the air-conditioning room 22 is formed of grating.

In addition, in this embodiment, the workability of the floor 30 is improved compared to when the floor 30 of the air-conditioning room 22 is formed from cast-in-place concrete. Furthermore, in this embodiment, the placement accuracy of the through holes 34 can be improved compared to when the floor 30 of the air-conditioning room 22 is formed from cast-in-place concrete.

Moreover, in this embodiment, the dimensional accuracy of the multiple through holes 34 can be improved compared to when the floor 30 of the air-conditioning room 22 is formed from cast-in-place concrete. This allows the outlet unit 40, shielding unit 50, and sensor pole 60 to be easily attached and detached to each through hole 34.

Furthermore, by changing the arrangement and number of the air outlet units 40 and shielding units 50 according to the layout of the heat generating equipment etc. installed in the air conditioning room 22, the arrangement and number of the air outlets 48A of the precast deck 32 can be easily changed.

In addition, the air outlet cover 48 of the air outlet unit 40 and the shielding cover 54 of the shielding unit 50 do not protrude into the air-conditioned room 22. This allows heat-generating devices and the like to be easily installed in the air-conditioned room 22, and increases the degree of freedom in the layout of the heat-generating devices and the like.

Here, the air conditioner 70 generates conditioned air W based on environmental information such as temperature measured by the air conditioning sensor 68, and blows the generated conditioned air W at a predetermined air volume (pressure). This causes the predetermined conditioned air W to be blown from the air conditioner 70 to the plenum space 24 and through the multiple air outlet units 40 into the air-conditioned room 22.

As shown in FIG. 5, the air conditioning sensor 68 is attached to a sensor pole 60. The sensor pole 60 has a base 62. The base 62 is supported by the precast deck 32 while being disposed within the through hole 34. As a result, if the sensor pole 60 attempts to fall over, the lower flange 62C of the base 62 comes into contact with the inner circumferential surface 34A of the through hole 34, preventing the sensor pole 60 from falling over.

The base 62 is also removably attached to the through hole 34. This allows the placement of the air conditioning sensor 68 to be easily changed by changing the through hole 34 in which the base 62 is installed in response to changes in the layout of heat-generating equipment and the like installed in the air-conditioned room 22, for example. Furthermore, the mounting height of the air conditioning sensor 68 can be easily changed by appropriately changing the length of the support 64.

The return duct 72 is also provided along the wall 22A of the air-conditioning room 22. As a result, in this embodiment, when changing the layout or updating the heat-generating equipment installed in the air-conditioning room 22, the heat-generating equipment is less likely to interfere with the return duct 72, compared to, for example, a case in which the return duct or the like is suspended from the ceiling of the air-conditioning room 22. This makes it easier to change the layout or update the heat-generating equipment.

(Modification)
Next, a modification 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 being installed in the plenum space 24, and may be installed, for example, in a shaft connecting the air-conditioning room 22 and the plenum space 24.

In the above embodiment, the air conditioner 70 circulates the conditioned air W between the air-conditioned room 22 and the plenum space 24. However, it is also possible to condition the outside air of the structure 10 using an outdoor air conditioner installed in the plenum space 24 or the shaft described above, and to blow the conditioned air into the air-conditioned room 22 via the plenum space 24 and the air outlet unit 40. It is also possible to use the outdoor air conditioner and the air conditioner 70 together.

In addition, in the precast deck 32 of the above embodiment, a plurality of through holes 34 are formed in advance at a factory or the like. However, the through holes 34 can also be formed in the precast deck 32 at the site. In this case, opening reinforcement materials (opening reinforcement bars, etc.) may be provided in advance in the areas of the precast deck 32 where it is expected that through holes 34 will be provided in the future.

In addition, in the above embodiment, an air conditioning sensor 68 is installed in the air conditioning room 22. However, the air conditioning sensor 68 may be installed in the air conditioning room 22 as necessary, and may be omitted as appropriate.

Furthermore, the air conditioning structure 20 according to the above embodiment is not limited to use in factories, but can also be appropriately applied 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 this embodiment, and one embodiment and various modified examples may be used in appropriate combination, and the present invention may of course be embodied in various forms without departing from the spirit of the present invention.

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 portion 68 Air conditioning sensor 70 Air conditioner 72 Return duct (flow path portion)
74 Return air outlet W Air conditioning air

Claims (3)

A precast floor slab having a plurality of through holes and forming a floor of an air-conditioning room;
an outlet unit having a basket for dropped objects and provided in the through hole;
An air conditioner that blows conditioned air from an underfloor space of the precast floor slab to the air-conditioned room through the air outlet unit;
a sensor support column having a base portion supported by the precast floor slab while being disposed in the through hole, the sensor support column supporting an air conditioning sensor to be installed in the air conditioning room;
Equipped with
The falling object basket is
A cylindrical portion is disposed in the through hole and has a lower portion protruding downward from the lower surface of the precast floor slab;
a bottom portion that closes an opening at a lower end side of the cylindrical portion;
having
An air intake port is formed in the lower part of the cylindrical portion.
Air conditioning structure. The air outlet unit is provided in a part of the plurality of through holes,
A shield that blocks the through hole is provided in the through hole where the air outlet unit is not provided.
The air conditioning structure according to claim 1. a flow path portion having a return air port and provided along a wall of the air-conditioning room and connecting the air-conditioning room and the underfloor space;
The air conditioner is provided in the underfloor space.
The air conditioning structure according to claim 1 or 2.