Air conditioning system

Abstract

To provide a radiant air conditioning system that can suppress the reduction of radiant effects. [Solution] The air conditioning system 100 comprises a ceiling 60 that separates the indoor space RS to be air-conditioned from the ceiling space CS above the indoor space RS, an outlet 50 that blows out conditioned air AA obtained by cooling or heating the air in the indoor space RS into the ceiling space CS, a communication hole 70 provided in the ceiling 60 that connects the indoor space RS and the ceiling space CS and allows the conditioned air AA blown out from the outlet 50 into the ceiling space CS to flow back into the indoor space RS, and a resistance part 80 configured to create flow resistance when the conditioned air AA flows through the communication hole 70.

Description

Technical Field

[0001] The present invention relates to an air conditioning system for air conditioning an indoor space.

Background Art

[0002] Conventionally, a radiant air conditioning system has been known. For example, in the systems disclosed in Patent Document 1 and Patent Document 2, a ceiling space is provided above an indoor space, the indoor space and the ceiling space are partitioned by a ceiling, and air for air conditioning that has been heated or cooled is supplied to the ceiling space.

Prior Art Documents

Patent Documents

[0003]

Patent Document 2

Patent Document 1

Summary of the Invention

[0004] In the system of Patent Document 1 described above, communication holes are provided in the ceiling. In the ceiling space, depending on the state of the airflow of the conditioned air, a suction area from the indoor space to the ceiling space may occur. Based on this, the temperature of the ceiling space near the suction area approaches the temperature of the indoor space, and there is a risk that the radiation effect is reduced.

[0005] In the system of Patent Document 2 described above, in the ceiling space, outlets are installed so that the conditioned air blows downward toward the ceiling. When the conditioned air is blown out in this way, the airflow is difficult to diffuse, and there is a risk that the radiation effect is reduced as in Patent Document 1. There is a demand for a technology for solving the above problems.

[0006] In view of the above, an object of the present invention is to provide an air conditioning system for air conditioning an indoor space, which can suppress a reduction in the radiation effect in a system that performs radiant air conditioning on the indoor space. [Means for solving the problem]

[0007] The technical means of the present invention for solving this technical problem is characterized by the following points. A ceiling that separates the air-conditioned indoor space from the ceiling space above the said indoor space, The conditioned air obtained by cooling or heating the air in the aforementioned indoor space is blown out from the ceiling space via an outlet, A communication hole is provided in the ceiling, which connects the interior space and the ceiling space, and through which the conditioned air blown from the outlet into the ceiling space can flow into the interior space, The device comprises a resistance section configured to create resistance to the flow of the conditioned air through the communication hole.

[0008] In the air conditioning system of the present invention, it is preferable that the resistive portion is laid on the ceiling space side relative to the ceiling.

[0009] In the air conditioning system of the present invention, the resistive portion is preferably a fiber aggregate or porous body that allows the flow of the conditioned air.

[0010] In the air conditioning system of the present invention, it is preferable that a plurality of outlets are provided to disperse the conditioned air in the ceiling space.

[0011] The air conditioning system of the present invention includes a duct that guides the conditioned air towards the outlet in a substantially horizontal direction, It is preferable that the air outlet is positioned below the duct.

[0012] In the air conditioning system of the present invention, the ceiling space is enclosed by walls, It is preferable to include an insulating section configured to provide heat transfer resistance between the conditioned air and the wall surface. [Effects of the Invention]

[0013] According to the present invention, the resistance portion suppresses the influence of airflow in the ceiling space, and the intake area in the ceiling is reduced, thereby suppressing the reduction of the radiant effect. [Brief explanation of the drawing]

[0014] [Figure 1] This is a schematic diagram of the air conditioning system according to an embodiment of the present invention. [Figure 2] This figure shows an example of the configuration of the air outlets in the air conditioning system shown in Figure 1. [Figure 3] This figure shows examples of ceiling and resistance components included in the air conditioning system shown in Figure 1. [Figure 4] Figure 1 shows a comparison of the ceiling temperature distribution of the air conditioning system shown in Figure 1 with that of the comparative example. [Modes for carrying out the invention]

[0015] Embodiments of the present invention will be described below with reference to the drawings.

[0016] As shown in Figure 1, the air conditioning system 100 according to an embodiment of the present invention is a radiant air conditioning system for air conditioning an indoor space RS. The air conditioning system 100 can be applied to a building, for example, that has an indoor space RS and a ceiling space CS above the indoor space RS.

[0017] The air conditioning system 100 includes an indoor unit 10, an outdoor unit 20, an air intake 30, a duct 40, an air outlet 50, a ceiling 60, a communication hole 70, a resistance section 80, and an insulation section 90. The indoor unit 10 is installed in the ceiling space CS and may be fixed to a wall W surrounding the ceiling space CS, for example. The outdoor unit 20 is installed outside the ceiling space CS (for example, outdoors) and is connected to the indoor unit 10 via refrigerant piping and a drain.

[0018] The suction port 30 is configured such that the air in the indoor space RS is sucked in. The air sucked in through the suction port 30 is introduced toward the indoor unit 10. The introduced air is cooled or heated by the indoor unit 10. For example, when cooling is performed, heat is absorbed from the air introduced into the indoor unit 10, and heat is radiated outdoors by the outdoor unit 20 via a refrigerant. On the other hand, when heating is performed, heat is absorbed from the outdoor air by the outdoor unit 20, and heat is radiated to the air introduced into the indoor unit 10 via a refrigerant.

[0019] The blowout port 50 blows out the air-conditioned air AA obtained by cooling or heating the air in the indoor space RS into the ceiling space CS. It is preferable that a plurality of blowout ports 50 are provided so as to disperse the air-conditioned air AA in the ceiling space CS. The plurality of blowout ports 50 are preferably configured such that the air-conditioned air AA blows out in a substantially horizontal direction, for example. Further, it is preferable that the air flow velocity and the air flow direction of the air-conditioned air AA from the blowout port 50 are adjusted by using, for example, a perforated plate or the like or the shape design of the blowout port 50.

[0020] The duct 40 guides the air-conditioned air AA in a substantially horizontal direction toward the blowout port 50. More specifically, the duct 40 is interposed, for example, between the indoor unit 10 and the blowout port 50 and is arranged along a substantially horizontal direction. In this case, the upstream side of the duct 40 is connected to the indoor unit 10, and the downstream side of the duct 40 is connected to the blowout port 50 via a flow path box FB.

[0021] As shown in FIG. 2(a), the blowout port 50 can be arranged above the duct 40, but as shown in FIG. 2(b), it is preferable that the blowout port 50 is arranged, for example, below the duct 40. This arrangement is suitable in that it suppresses the air flow directly toward the ceiling 60.

[0022] As shown in FIG. 1, the ceiling 60 defines an indoor space RS to be air-conditioned and a ceiling space CS above the indoor space RS. The ceiling 60 may be made of a material such as metal or gypsum. Communication holes 70 and resistance portions 80 are provided in the ceiling 60.

[0023] As shown in Figure 3, the communication hole 70 is provided in the ceiling 60 and connects the indoor space RS and the ceiling space CS. The communication hole 70 allows the conditioned air AA blown from the outlet 50 into the ceiling space CS to flow into the indoor space RS.

[0024] The resistive portion 80 is configured to act as a flow resistance when the conditioned air AA flows through the communication hole 70. More specifically, the resistive portion 80 can be, for example, a sheet-like fiber aggregate or a porous body.

[0025] Furthermore, the resistive section 80 may, for example, be laid on the ceiling 60 on the ceiling space CS side, or attached from the room space RS side, and any arrangement is acceptable as long as it provides resistance to the flow of the conditioned air AA. For example, it is preferable that the size of the gap (equivalent diameter) of the resistive section 80 is sufficiently smaller than the opening diameter of the communication hole 70.

[0026] As shown in Figure 1, the ceiling space CS is enclosed by a wall surface W. The wall surface W may consist of, for example, an upper wall surface Wa and a side wall surface Wb. An insulating section 90 may be provided on part or all of the upper wall surface Wa and the side wall surface Wb.

[0027] The insulation section 90 is configured to provide heat transfer resistance between the conditioned air AA and the wall surface W. The insulation section 90 may be, for example, a sheet-like insulation material, and may be attached to the inside or outside of the upper wall surface Wa and the side wall surface Wb. The insulation section 90 may be in any form or arrangement as long as it provides heat transfer resistance.

[0028] [Effects of the Embodiment] As described above, the air conditioning system 100 according to an embodiment of the present invention includes a ceiling 60 that separates the indoor space RS to be air-conditioned from the ceiling space CS above the indoor space RS, an outlet 50 that blows out conditioned air AA obtained by cooling or heating the air in the indoor space RS into the ceiling space CS, a communication hole 70 provided in the ceiling 60 that connects the indoor space RS and the ceiling space CS and allows the conditioned air AA blown out from the outlet 50 into the ceiling space CS to flow back into the indoor space RS, and a resistance part 80 configured to create flow resistance when the conditioned air AA flows through the communication hole 70.

[0029] Figure 4 shows a comparison of the temperature distribution of the ceiling 60 when the air conditioning system 100 functions as a cooler, and the temperature distribution of the ceiling in the comparative example. Figure 4(a) is a thermoviewer diagram of the ceiling 60 on which the resistor 80 is installed. The resistor 80 is located on the upper side of the ceiling 60. Figure 4(b) is a thermoviewer diagram of the ceiling in the comparative example, corresponding to Figure 4(a). The ceiling in the comparative example has communication holes, but no resistors are installed.

[0030] Without the resistance section 80, an intake region is created by the airflow in the ceiling space CS. As a result, as shown in Figure 4(b), the temperature locally approaches the room temperature, reducing the radiant effect. In contrast, as shown in Figure 4(a), the resistance section 80 suppresses the influence of the airflow in the ceiling space CS, reducing the intake region in the ceiling 60. As a result, the temperature is lowered overall, improving the radiant effect.

[0031] In the air conditioning system 100, the resistance unit 80 is installed on the ceiling space CS side relative to the ceiling 60.

[0032] According to this, the resistor 80 can be easily installed on the ceiling 60 without being conspicuous in the room.

[0033] In the air conditioning system 100, the resistance section 80 is a fiber aggregate or porous material that allows the flow of conditioned air AA.

[0034] According to this, a general-purpose and readily available material can be used for the resistor 80.

[0035] In the air conditioning system 100, multiple air outlets 50 are provided to distribute the conditioned air AA in the ceiling space CS.

[0036] According to this, the conditioned air AA is dispersed, and the influence of airflow in the ceiling space CS is further suppressed. Therefore, the intake area in the ceiling 60 can be further reduced.

[0037] The air conditioning system 100 includes a duct 40 that guides conditioned air AA in a substantially horizontal direction toward the outlet 50, and the outlet 50 is located below the duct 40.

[0038] According to this, in the ceiling space CS, the conditioned air AA coming out of the duct 40 is prevented from directly hitting the ceiling 60 and the resistance section 80, and the influence of airflow in the ceiling space CS can be appropriately suppressed.

[0039] In the air conditioning system 100, the ceiling space CS is enclosed by a wall surface W, and the air conditioning system 100 includes an insulating section 90 configured to provide heat transfer resistance between the conditioned air AA and the wall surface W.

[0040] According to this, the insulation section 90 can suppress heat transfer from the ceiling space CS to the outside. Therefore, the indoor space RS can be air-conditioned efficiently. [Explanation of symbols]

[0041] 40...Duct, 50...Air outlet, 60...Ceiling, 70...Connecting hole, 80...Resistance section, 90...Insulation section, 100...Information and communication system, AA...Air-conditioned air, CS...Ceiling space, RS...Indoor space, W...Wall surface

Claims

1. A ceiling that separates the air-conditioned indoor space from the ceiling space above the said indoor space, The conditioned air obtained by cooling or heating the air in the aforementioned indoor space is blown out from the ceiling space via an outlet, A communication hole is provided in the ceiling, which connects the interior space and the ceiling space, and through which the conditioned air blown from the outlet into the ceiling space can flow into the interior space, An air conditioning system comprising: a resistance section configured to create flow resistance when the conditioned air flows through the communication hole.

2. The air conditioning system according to claim 1, wherein the resistive portion is laid on the ceiling space side relative to the ceiling.

3. The air conditioning system according to claim 2, wherein the resistive portion is a fiber aggregate or porous body that allows the flow of the conditioned air.

4. The air conditioning system according to claim 3, wherein a plurality of outlets are provided to disperse the conditioned air in the ceiling space.

5. The system includes a duct that guides the conditioned air towards the aforementioned outlet in a substantially horizontal direction, The air conditioning system according to claim 4, wherein the air outlet is located below the duct.

6. The aforementioned ceiling space is enclosed by walls, The air conditioning system according to any one of claims 1 to 5, further comprising an insulating section configured to provide heat transfer resistance between the conditioned air and the wall surface.

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