JP2015218947A - Air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning system capable of providing uniform thermal environment while suppressing energy load.SOLUTION: An air conditioning system 1 has an outdoor unit 20 having a fan 21A and processing outside air, and a cooling device 30 for cooing air. The outdoor unit 20 supplies the processed outside air to a ceiling internal space K between a ceiling panel 10 disposed on a ceiling C of an object room 2 as a cooled object and a floor slab SJ of a room 2J just above the object room 2, and the cooling device 30 is disposed in the ceiling internal space K. The ceiling panel 10 is provided with a penetrated portion 11A penetrated from the ceiling internal space K to the object room 2.

Description

  The present invention relates to an air conditioning system.

Generally, a central air conditioning system, a package type air conditioning system, etc. are known as a cooling system.
In cooling by the central air conditioning system, an air conditioner installed in a machine room or the like cools air to an appropriate temperature, and the cooled air is conveyed and blown out from a blowout port provided in a living room. However, in this central air conditioning system, a temperature difference is generated according to the distance from the air outlet, in which the room temperature is low in the vicinity of the air outlet and the room temperature increases as the distance from the air outlet increases. Moreover, the office worker in the vicinity of the air outlet may feel uncomfortable because the body receives the cooled air directly. Thus, with the central air conditioning system, it is difficult to create a uniform thermal environment in the room.

  In the cooling by the package type air conditioning system, an air conditioner in which a heating / cooling device and a fan are integrated is installed on a ceiling surface. Similarly in this package type air conditioning system, the room temperature is similarly affected by the position of the air outlet, and there is a problem that it is difficult to make the room a uniform thermal environment.

  Therefore, a radiation panel provided on the ceiling, a plurality of cold water pipes provided on the upper surface of the radiation panel, a partition that partitions the upper side of the radiation panel into an interior side and a perimeter side, and air on the interior side toward the perimeter side A ceiling radiation type air conditioning system including a blower capable of blowing air has been proposed (see Patent Document 1 below). In such a ceiling radiation type air conditioning system, the radiation panel is cooled by the cold water flowing through the cold water pipe, and the room is cooled by the radiation effect of the cooled radiation panel.

  An indoor air conditioning system including a ceiling radiating panel provided on the ceiling and an indoor air conditioner provided above the ceiling radiating panel has also been proposed (see Patent Document 2 below). In such an indoor air conditioning system, the air above the ceiling radiating panel is cooled by the indoor air conditioner, and the cooled air cools the ceiling radiating panel. And it is the structure by which it cools and the room | chamber interior is cooled by the cold radiation of a ceiling radiation panel.

JP 2011-2105 A Japanese Patent No. 4605759

In the ceiling radiant air conditioning system described in Patent Document 1 above, if the amount of heat generated by the worker or the equipment is high, the worker is not sufficiently cooled by the radiation effect of the radiant panel, and a more comfortable thermal environment is desired. It is rare.
Further, in the indoor air conditioning system described in Patent Document 2 above, the cooled air above the ceiling radiating panel is not configured to move from the upper side of the ceiling radiating panel to the indoor side, so that the room is not sufficiently cooled. There is a point. Furthermore, when air is flowed by a fan or the like in order to cool the space above the ceiling radiating panel, there is a problem that the energy load increases.

  Then, this invention is made | formed in view of the said situation, and provides the air-conditioning system which can form a uniform thermal environment, suppressing energy load.

In order to achieve the above object, the present invention employs the following means.
That is, an air conditioning system according to the present invention includes an external air conditioner that has a fan and processes outside air, and a cooling device that is supplied with cold water and cools the air. Supplying the treated outside air to the space in the ceiling between the panel-like ceiling panel provided on the ceiling of the target room and the floor slab of the room directly above the target room, the cooling device, It is provided in the space in the ceiling, and the ceiling panel is formed with a penetrating portion penetrating from the space in the ceiling to the target room.

In the air conditioning system configured as described above, the external air conditioner supplies the treated outside air to the ceiling space. The cooling device provided in the ceiling space cools the air in the ceiling space including the treated outside air using cold water. The air that has been cooled and has a high density moves downward and passes through a through-hole formed in the ceiling panel and moves to the target room. On the other hand, the air heated by the heat load of the target room, such as the heat generated by the workers in the target room and the heat generated by the equipment, moves upward, passes through the penetrating part of the ceiling panel, and reaches the space in the ceiling. This warmed air is cooled by the cooling device as described above. Here, when the air cooled by the cooling device moves to the target room, it collides with a portion around the penetrating portion in the ceiling panel, so that the downward movement is somewhat suppressed. Thereby, the cooled air moves to the target room at an appropriate lowering speed. Therefore, a uniform thermal environment can be formed.
In addition, since the cooled air can be supplied to the target room with only the conveying power (fan) of the external air conditioner without providing the conveying power in the cooling device, the energy load can be suppressed.
In addition, the external air conditioner performs processing such as removing the humidity of the outside air or cooling the outside air to a predetermined temperature. Therefore, since the cooling device further cools the dehumidified or cooled outside air, the cooling efficiency is good.

  In addition, the air conditioning system according to the present invention is preferably configured to blow the outside air processed by the external air conditioner toward the floor slab in the room on the upper floor.

  In the air conditioning system configured as described above, since the outside air processed by the external air conditioner blows toward the floor slab of the room on the upper floor, the temperature of the upper air is high in the ceiling space, and the lower air is caused by natural convection. A thermal environment is created where the temperature of the air is low. Therefore, the cooling device can cool the high-temperature air above the space in the ceiling and efficiently move the cooled air to the target room below.

  The air conditioning system according to the present invention may be configured to blow the outside air processed by the external air conditioner from above the cooling device toward the cooling device.

  In the air conditioning system configured as described above, the outside air processed by the external air conditioner is blown from above the cooling device toward the cooling device, and the air cooled by the cooling device moves downward. Therefore, the flow from the upper side to the lower side is formed by the external air conditioner, so that the convection is larger than the natural convection and the heat exchange rate of the cooling device is increased.

  In the air conditioning system according to the present invention, a partition wall that divides the unit space in the ceiling into a plurality of unit spaces in the horizontal direction is provided, and the air supply port and the cooling device of the external air conditioner Each may be provided.

  In the air conditioning system configured as described above, air is cooled for each unit space, and the cooled air moves to the target room. Therefore, since the bias of the thermal environment can be suppressed in the horizontal direction in the ceiling space, the thermal environment of the target room can be made uniform.

  In the air conditioning system according to the present invention, the floor disposed above the floor slab of the target room is provided with a suction port, and the return air port of the external air conditioner is connected to the floor slab of the target room. And a floor space between the floor portion and the floor portion.

  In the air conditioning system configured as described above, the air in the target room is introduced into the underfloor space via the suction port and stays in the underfloor space. The air in the underfloor space is drawn into a return air port provided in the underfloor space and introduced into the external air conditioner. Therefore, since generation | occurrence | production of the airflow of an object room by the suction of an external air conditioner, a temperature change, etc. can be suppressed, the thermal environment of an object room can be made uniform.

  The air conditioning system according to the present invention can form a uniform thermal environment while suppressing energy load.

BRIEF DESCRIPTION OF THE DRAWINGS (a) It is a schematic diagram which shows the structure of an air conditioning system which concerns on 1st embodiment of this invention, (b) It is a top view of the ceiling panel of the target room of an air conditioning system, (c) The target room of an air conditioning system It is an enlarged view of the ceiling panel. It is a typical figure showing composition of an air-conditioning system concerning a second embodiment of the present invention. It is a typical figure showing composition of an air-conditioning system concerning modification 1 of a second embodiment of the present invention. It is a typical figure showing composition of an air-conditioning system concerning a third embodiment of the present invention. It is a schematic diagram which shows the structure of the air conditioning system which concerns on 4th embodiment of this invention. It is a schematic diagram which shows the structure of the air conditioning system which concerns on 5th embodiment of this invention.

(First embodiment)
An air conditioning system according to a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1: is a schematic diagram which shows the structure of (a) air-conditioning system which concerns on 1st embodiment of this invention, (b) is a top view of the ceiling panel of the target room of an air-conditioning system, (c) Air-conditioning It is an enlarged view of the ceiling panel of the target room of a system.

First, a living room (target room) 2 to be cooled by the air conditioning system 1 according to the present embodiment will be described with reference to FIG.
The living room 2 has a plurality of walls W that partition the space between the floor slab S and the adjacent room (not shown) that extends upward from the floor slab S, and a ceiling C that faces the floor slab S. In the building, a plurality of such living rooms 2 are provided in the horizontal direction and the vertical direction.

  The ceiling C is provided with a ceiling panel 10 that forms a horizontal plane. The ceiling panel 10 is configured by arranging a plurality of ceiling panel bodies 11 formed in a panel shape. In the present embodiment, the ceiling panel body 11 is made of a metal such as aluminum and has a rectangular shape in plan view. The ceiling panel body may be composed of an asbestos sound absorbing board or the like.

  An in-ceiling space K is formed between the ceiling panel 10 and a floor slab SJ of a room 2J directly above the living room 2 (a room directly above the target room) 2J.

  The ceiling panel body 11 is formed with a plurality of ceiling through holes 11 </ b> A (penetrating portions) penetrating from the ceiling space K to the living room 2. In the present embodiment, the ceiling through hole 11A is formed in a circular shape.

Next, the air conditioning system 1 will be described.
As shown to Fig.1 (a), the air conditioning system 1 has the external conditioner 20 which processes external air, and the several cooling device 30 provided in the space K in the ceiling.

  The external air conditioner 20 includes a main body 21 that processes outside air, a return air port 22 provided in the ceiling C, and an air supply port 23 provided in the space K in the ceiling. Further, the external air conditioner 20 introduces the air in the living room 2 sucked from the return air port 22 into the main body portion 21 and the supply air that introduces the outside air processed by the main body portion 21 into the air supply port 23. And an air duct 25.

  The main body 21 has a fan 21A. The main body 21 performs processing such as removing the humidity of the introduced outside air or cooling the outside air to a predetermined temperature, and supplies the treated outside air to the air supply duct 25.

  The air supply port 23 is provided at the tip of the air supply duct 25 and is provided in the floor slab SJ of the living room 2J on the upper floor provided above the space K in the ceiling. Thereby, the outside air processed by the main body portion 21 is blown out downward from the air supply opening 23 into the ceiling space K.

  A plurality of cooling devices 30 are provided in the ceiling space K. For example, the cooling device 30 is supported by the floor slab SJ of the room 2J directly above the floor so as to be suspended by the support portion 30S provided in the floor slab SJ of the room 2J of the floor directly above.

  The cooling device 30 supplies air cooled by heat exchange. For example, the cooling device 30 has a cold water pipe (not shown) connected to the refrigerator 32. The cold water produced by the refrigerator 32 circulates in this cold water pipe.

Next, the flow of air in the air conditioning system 1 configured as described above will be described.
In the air conditioning system 1, the external air conditioner 20 processes the introduced outside air and supplies the treated outside air to the air supply duct 25. The outside air that has circulated through the air supply duct 25 is blown out from the air supply opening 23 to the space K in the ceiling. On the other hand, the cooling device 30 provided in the ceiling space K exchanges heat between the air in the ceiling space K including the outside air supplied from the external air conditioner 20 and the cold water flowing through the cold water pipe. As a result, the cooled air having a high density moves downward from the cooling device 30, passes through the ceiling through hole 11 </ b> A formed in the ceiling panel 10, and moves to the living room 2. On the other hand, the air heated by the heat load of the room 2 such as the heat generated by the office worker in the room 2 and the heat generated by the equipment moves upward and is sucked from the return air port 22 provided in the ceiling C to return the air. It circulates through the duct 24 and is discharged from the main body 21 of the external air conditioner 20 to the outside. Thus, natural convection in which the air that has been cooled and increased in density by the cooling device 30 moves downward and the warm air in the living room 2 moves upward occurs.

  In the air conditioning system 1 configured in this way, when the cooled air moves to the living room 2, it collides with a portion around the ceiling through hole 11 </ b> A in the ceiling panel 10, and thus the downward movement is somewhat. It is suppressed. Thereby, the cooled air moves to the living room 2 at an appropriate descending speed. Therefore, a uniform thermal environment can be formed.

  Moreover, since the cooling device 30 can supply the cooled air to the living room 2 only by the fan 21A of the external air conditioner 20 without providing conveyance power, the energy load can be suppressed.

  Further, since the external air conditioner 20 performs a humidity treatment to remove the humidity of the outside air, if the refrigerator 32 supplies medium-temperature cold water of about 16 degrees to the cooling device 30, the cooling device 30 causes the air in the living room 2 to flow. Proper cooling is possible. Therefore, the cooling efficiency is better than that of a general refrigerator that supplies cold water having a low temperature of about 7 degrees. Also, when the external air conditioner 20 cools the outside air to a predetermined temperature, the cooling efficiency can be improved similarly.

  Moreover, the cooled air around the cooling device 30 cools the ceiling panel 10 made of a metal having high thermal conductivity. Therefore, the inside of the living room 2 can be efficiently cooled by the cold radiation from the cooled ceiling panel 10.

(Second embodiment)
The second embodiment described above will be described mainly with reference to FIG.
FIG. 2 is a schematic diagram showing a configuration of an air conditioning system according to the second embodiment of the present invention.
In the following other embodiments and modifications, the same members as those used in the above-described embodiments are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIG. 2, the external air conditioner 120 of the air conditioning system 101 includes a main body 21, an air inlet 123 provided in the ceiling space K, and outside air processed by the main body 21 to the air inlet 123. And an air supply duct 125 to be introduced.

  The air supply duct 125 is arranged in a space K1 between the floor slab SJ of the living room 2J on the immediately upper floor and the cooling device 30 in the ceiling space K.

  The air supply port 123 is provided at the front end of the air supply duct 125 and opens toward the floor slab SJ of the living room 2J on the upper floor. Thereby, the external air processed by the main-body part 21 is sprayed toward the floor slab SJ of the living room 2J of a directly upper floor from the air supply port 123. FIG.

  In the air conditioning system 101 configured in this manner, since the outside air processed by the external air conditioner 120 is blown toward the floor slab SJ of the living room 2J on the upper floor, the temperature of the upper air is high in the ceiling space K. A thermal environment is formed where the temperature of the lower air is low due to natural convection. Therefore, the cooling device 30 can cool the high-temperature air above the ceiling space K and efficiently move the cooled air to the lower room 2.

(Modification 1 of the second embodiment)
Modification 1 of the second embodiment described above will be described mainly with reference to FIG.
FIG. 3 is a schematic diagram showing a configuration of an air conditioning system according to Modification 1 of the second embodiment of the present invention.

  As shown in FIG. 3, the external air conditioner 120X of the air conditioning system 101X is configured to remove the main body 21, the plurality of air supply ports 123X, 123X,... And an air supply duct 125Z to be introduced into the air supply port 123.

  In the ceiling space K, the air supply duct 125Z includes a main duct portion 125X disposed in a space K1 between the floor slab SJ of the living room 2J on the immediately upper floor and the cooling device 30, and a plurality of branches branched from the main duct portion 125X. The branch duct portions 125Y, 125Y,.

  The air supply port 123X is provided at the tip of each branch duct portion 125Y of the air supply duct 125Z. The air supply opening 123X opens toward the floor slab SJ of the living room 2J on the upper floor. Thereby, the external air processed by the main-body part 21 is sprayed toward the floor slab SJ of the living room 2J of a directly upper floor from each supply port 123X.

  In the air conditioning system 101X configured as described above, the outside air processed by the external air conditioner 120X is blown from the plurality of air supply ports 123X toward the floor slab SJ of the living room 2J immediately above the floor. Therefore, since the bias of the thermal environment due to the horizontal position in the ceiling space K can be suppressed, the thermal environment of the living room 2 can be made more uniform.

(Third embodiment)
Next, the air conditioning system which concerns on 3rd embodiment of this invention is demonstrated mainly using FIG.
FIG. 4 is a schematic diagram showing a configuration of an air conditioning system according to the third embodiment of the present invention.

  As shown in FIG. 4, the external air conditioner 220 of the air conditioning system 201 includes the main body 21, a plurality of air supply ports 223, 223... And an air supply duct 225 introduced into the air supply port 223.

  In the ceiling space K, the air supply duct 225 includes a main duct portion 225X disposed in a space K1 between the floor slab SJ of the living room 2J on the immediately upper floor and the cooling device 30, and a plurality of branches branched from the main duct portion 225X. The branch duct portions 225Y, 225Y. Some of the branch duct portions 225Y, 225Y... Are provided with a damper 224 for adjusting the air volume.

  The air supply port 223 is provided at the tip of each branch duct portion 225Y of the air supply duct 225. The air supply port 223 opens downward. Thereby, the outside air processed by the main body portion 21 is blown toward the cooling device 30 from each air supply port 223.

  In the air conditioning system 201 configured as described above, the outside air processed by the external air conditioner 220 is blown from above the cooling device 30 toward the cooling device 30, and the air cooled by the cooling device 30 moves downward. . Therefore, a flow from the upper side to the lower side is formed by the external air conditioner 220, so that the convection is larger than the natural convection and the heat exchange rate of the cooling device 30 is increased.

  Moreover, when the heat load in the living room 2 is large, the inside of the living room 2 can be effectively cooled by increasing the opening degree of the damper 224. Further, by providing the air supply port 223 directly above a device (not shown) having a high heat load such as a server or a copy machine, it is possible to cope with a ubiquitous heat load.

(Fourth embodiment)
Next, an air conditioning system according to a fourth embodiment of the present invention will be described mainly using FIG.
FIG. 5 is a schematic diagram showing a configuration of an air conditioning system according to the fourth embodiment of the present invention.

  As shown in FIG. 5, the space K in the ceiling is partitioned in the horizontal direction by a partition wall W11. That is, the ceiling space K is divided into unit spaces K11 and K11.

The cooling devices 30 and 30 are disposed in the unit spaces K11 and K11, respectively.
The external air conditioner 320 of the air conditioning system 301 introduces the main body 21, the air supply ports 323 and 323 provided in the unit spaces K <b> 11 and K <b> 11, respectively, and the external air processed by the main body 21 into the air supply port 323. An air duct 325. The cooling device 30 is provided in each of the unit spaces K11 and K11.

  The air supply duct 325 includes a main duct portion 325X arranged in the space K between the floor slab SJ of the living room 2J on the immediately upper floor and the cooling device 30 in the ceiling space K, and a plurality of air ducts 325X branched from the main duct portion 325X. Branch duct portions 325Y and 325Y.

  The air supply port 323 is provided at the tip of each branch duct portion 325Y of the air supply duct 325. The air supply port 223 opens downward. Thereby, the outside air processed by the main body 21 is blown toward the cooling device 30 from each air supply port 323.

  In the air conditioning system 301 configured as described above, the outside air processed by the external air conditioner 320 is blown toward the cooling device 30 from above the cooling device 30, and the air cooled by the cooling device 30 moves downward. . Therefore, a flow from the upper side to the lower side is formed by the external air conditioner 320, so that convection is larger than natural convection. Since this large convection is formed in each of the unit spaces K11, it is possible to suppress the uneven thermal environment in the horizontal direction.

(Fifth embodiment)
Next, an air conditioning system according to a fifth embodiment of the present invention will be described mainly using FIG.
FIG. 6 is a schematic diagram showing a configuration of an air conditioning system according to the fifth embodiment of the present invention.

  Above the floor slab S of the living room 2, a floor portion F is arranged in a planar shape. An underfloor space Y is formed between the floor portion F and the floor slab S.

  The floor F is provided with a plurality of suction ports 41 penetrating in the vertical direction. Thereby, the air in the living room 2 is introduced into the underfloor space Y through the suction port 41.

  The external air conditioner 420 introduces the air in the underfloor space Y sucked from the main body 21, the return air opening 422 provided in the underfloor space Y, the air supply opening 23, and the return air opening 422 into the main body 21. A return air duct 424 and an air supply duct 25 are provided.

  In the air conditioning system 401 configured as described above, the air in the living room 2 is introduced into the underfloor space Y through the suction port 41 and stays in the underfloor space Y. The air in the underfloor space Y is sucked from a return air port 422 provided in the underfloor space Y and introduced into the external air conditioner 420. Therefore, since generation | occurrence | production of the air flow of the living room 2 by suction, a temperature change, etc. can be suppressed, the thermal environment of the living room 2 can be made uniform.

  The various shapes and combinations of the constituent members shown in the above-described embodiments are merely examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

1 ... Air conditioning system 2 ... Living room (target room)
2J… Living room (room on the upper floor of the target room)
10 ... Ceiling panel 11A ... Ceiling through hole (penetrating part)
20 ... External air conditioner 21A ... Fan 30 ... Cooling device 41 ... Suction port 422 ... Return air port C ... Ceiling F ... Floor K ... Ceiling space K11 ... Unit space SJ ... Floor slab W11 of the room on the upper floor

Claims (5)

An air conditioner having a fan and processing outside air;
A cooling device for supplying cold water and cooling the air,
The external air conditioner treats the treated outside air in a ceiling internal space between a panel-like ceiling panel provided on the ceiling of the target room to be cooled and a floor slab of a room immediately above the target room. Supply
The cooling device is provided in the ceiling space,
The air conditioning system, wherein a penetrating portion penetrating from the space in the ceiling to the target room is formed in the ceiling panel.   The air conditioning system according to claim 1, wherein the outside air processed by the external air conditioner is configured to blow toward the floor slab of the room on the immediately upper floor.   The air conditioning system according to claim 1, wherein the outside air processed by the external air conditioner is configured to be blown toward the cooling device from above the cooling device. The ceiling space is provided with a partition wall that divides into a plurality of horizontal unit spaces,
The air conditioning system according to any one of claims 1 to 3, wherein an air supply port of the external air conditioner and the cooling device are provided in each of the unit spaces. The floor arranged above the floor slab of the target room is provided with a suction port,
The return air port of the external air conditioner is provided in a subfloor space between the floor slab and the floor portion of the target room. Air conditioning system.

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