JP2002228204A - Building structure heat storage air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a building structure heat storage air conditioning system in which heat storage efficiency is enhanced by storing heat effectively over the entire region of slabs for storing heat and which can be formed in a short period at a low cost even in an existing building. SOLUTION: The building structure heat storage air conditioning system stores heat in a slab 24 sectioning a building into upper and lower floors. A chamber 22 is formed between upper and lower slabs 24 and 26 and a ceiling chamber 28 is formed above the chamber 22. A duct 34 for supplying conditioned air 52 to the ceiling chamber 28 is installed. A guide plate 50 is disposed at a lower position of a beam 48a arranged on the floor surface of the slab 24 to form an air passage extending along the surface of the slab 24 between the beam 48a and the guide plate 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building thermal storage type air conditioning system, and more particularly to a building thermal storage type air conditioning system applied to air conditioning in buildings such as office buildings.

[0002]

2. Description of the Related Art As a conventional air conditioning system in a building such as an office building, there is a building thermal storage type air conditioning system which stores heat in a slab which divides the building into an upper floor and a lower floor. The configuration of this system is as follows. A ceiling chamber is formed above the chamber formed between the upper and lower slabs. A duct into which the conditioned air flows is provided in the ceiling chamber, and the end of the duct is provided so as to face the slab surface. For this reason, the conditioned air is supplied to the slab surface from the end of the duct, and the heat is transmitted to the slab surface in contact with the conditioned air. Then, the conditioned air moves along the slab surface, and stores heat in the contacted slab surface. The air that has accumulated heat in the slab surface is discharged to the outside via an exhaust path provided in the ceiling chamber. Conventionally, the heat treatment for the slab has been performed by repeating these steps.

[0003]

However, the conventional skeleton thermal storage type air conditioning system has the following problems. Large and small beams are provided on the lower surface of the slab to be subjected to heat storage so as to project, and the beams partition the slab into a plurality of zones. When storing heat in such a slab, when the conditioned air moves along the surface of the slab, it will collide with the overhanging beam. For this reason, the flow path of the conditioned air is disturbed, and there is a problem that the conditioned air is not sufficiently supplied to the slab zone on the outer side of the beam and the heat cannot be sufficiently stored. In particular, when cold heat is applied to the slab, this problem was remarkable. That is, when the conditioned air (cooling air) collides with the beam and moves downward, the cooling air has a higher specific gravity than ordinary air,
It just descends in the ceiling chamber. For this reason,
There is a problem that the heat storage efficiency of the entire slab is lowered because heat can hardly be stored in the zone of the slab outside the beam.

[0004] Conventionally, Japanese Patent Laid-Open No.
As disclosed in Japanese Patent No. 311566, a method of providing a plurality of air-conditioning air outlets to a slab has been proposed in order to effectively store heat in the slab. However, the number of air supply ducts and outlets increases, which increases costs and complicates equipment in the ceiling chamber, resulting in a problem that the work load is large and impractical.

[0005] Conventionally, Japanese Patent Application Laid-Open No. H11-94
As disclosed in Japanese Patent Publication No. 300, there has been proposed a skeleton thermal storage air conditioning system in which cold and hot air is passed through a large number of hollow portions formed in a slab to store heat. However, since it uses a special hollow slab, it cannot be applied to existing buildings. In addition, there is a problem that the cost increases because a special hollow slab needs to be constructed.

An object of the present invention is to solve the above-mentioned problems, and to provide a skeleton thermal storage type air-conditioning system capable of improving thermal storage efficiency by storing heat in an entire area (zone) of a slab to be subjected to thermal storage. Aim.

[0007]

In order to achieve the above object, in a regenerative air conditioning system according to the present invention, conditioned air can be introduced into a ceiling chamber provided in a building.
The slab forming the ceiling chamber is stored heat by the conditioned air, and a guide plate is provided separately below the overhanging section that partitions the slab into a plurality of zones, and the conditioned air is supplied to a zone adjacent to the overhanging section. An air passage for guiding is formed.

With this configuration, the conditioned air introduced into the ceiling chamber is jetted onto the slab surface. The conditioned air moves along the slab surface and stores heat in the contacted slab surface. When the conditioned air collides with a projecting portion such as a beam, the conditioned air moves downward from the slab surface. At this time, the conditioned air passes through the air passage formed by the guide plate and is guided to a zone on the slab surface adjacent to the overhang. Then, the conditioned air moves along the slab surface of the adjacent zone and stores heat in the contacted slab surface.

[0009] With this configuration, heat can be stored in the entire area (zone) of the slab where heat is to be stored, so that the slab can be effectively used and a high heat storage effect can be maintained.

[0010] Particularly, even when applying cold heat to the slab, a high heat storage effect can be similarly maintained. That is, the air-conditioned air that once collides with the overhang and moves downward can be guided again to an upper position along the slab surface by the guide plate positioned below the overhang and the air passage formed by the overhang. For this reason, it is possible to apply cold heat to the slab zone (adjacent zone) outside the overhang portion, and it is possible to exhibit a high heat storage effect. Also, by setting the distance between the guide plate and the overhang according to the layer thickness of the air-conditioned air flow,
The heat storage effect on the slab can be enhanced.

Further, by merely providing the guide plate at a position below the overhang, the members of the conventional air conditioning system in the building can be utilized as it is, without increasing the number of air supply ducts and outlets. An air conditioning system can be formed at low cost and in a short period of time. The guide plate does not need to be provided for all overhangs, but it is sufficient to provide the guide plate for overhangs with which conditioned air comes into contact.

The guide plate may be of any type which can prevent the conditioned air below the overhang from descending and can guide the conditioned air to the height of the slab surface. For example, the air path is formed by hollowing the inside of the guide plate. The structure may be as follows. Here, the conditioned air is preferably provided so as to face the slab surface. By doing so, heat can be sufficiently stored up to the inside of the slab portion that has come into contact with the conditioned air, so that the heat storage efficiency of the slab can be increased.

In the above configuration, the guide plate may have a diverting surface that forms an upward flow on the side of the zone adjacent to the overhang. This diverting surface may be a flat surface, or may be bent or curved.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A heat storage type air conditioning system according to the present invention will be described in detail with reference to the drawings. FIG.
It is explanatory drawing which shows the skeleton thermal storage type air conditioning system 20 in 1st Embodiment. The chamber 22 is defined by a slab 24 and a slab 26. On the upper side of the chamber 22, a ceiling chamber 28 is formed via a ceiling member 30.
In the present embodiment, a case will be described in which conditioned air (cooling air) 52 is supplied to the slab 24 constituting the ceiling chamber 28 to store cold heat. The skeleton thermal storage type air conditioning system 20 in the present embodiment can be applied not only to the case of storing cold heat but also to the case of storing warm heat.

In the ceiling chamber 28, an external air conditioner 3
2, an air supply duct 34 and an exhaust duct 36 are provided, respectively. Air supply duct 34 (34
a, b) branch off in the ceiling chamber. One air supply duct 34a is connected to an air outlet 38 provided to face the slab 24, and the other air supply duct 34b is connected to an air outlet 40 provided on the ceiling member 30 side. The conditioned air 52 can be supplied from the air outlets 38 and 40 of the air conditioner. The air supply outlets 38, 34b are provided in the respective air supply ducts 34a, 34b.
Switching dampers 42 and 44 are provided near 40. By opening and closing the switching dampers 42 and 44, the supply path of the conditioned air 52 is changed to the air supply duct 34a and the air supply duct 34.
b.

Then, as shown in FIG.
A beam 48 (48a, 48b, 48c) is appropriately provided on the lower surface of the slab 24, and the slab 24 is divided into a plurality of zones A, B, and C by these beams 48. In the present embodiment, a guide plate 50, which is a guide plate, is disposed at a position below the beam 48a provided between the zones A and B and between the zones A and C of the slab 24. The guide plate 50 has a substantially triangular prism shape having a turning surface 50a curved in a concave shape as shown in FIG.
They are arranged so that the downstream side of the second flow path is higher. As a result, an upward air passage is formed between the beam 48a and the guide plate 50. The turning surface 5
0a may be a flat inclined surface or a curved inclined surface.

The ceiling member 30 of the ceiling chamber 28 is provided with ventilation holes 51 at regular intervals.
Air is allowed to flow between the side 8 and the floor of the chamber 22. The vent 51 is preferably formed to be openable and closable in terms of heat storage efficiency, but is not limited to this.

The operation of the air conditioner system 20 constructed as described above will be described. When supplying conditioned air (cooling air) 52 to the slab 24 to apply cold heat, the switching damper 42 of the air supply duct 34a on the slab 24 side is used.
Is opened, and the switching damper 40 of the air supply duct 34b on the ceiling member 30 side is closed. When the conditioned air 52 is supplied to the air supply duct 34 by the air conditioner 32, the conditioned air 5
2 is supplied to the slab 34 via the air outlet 38 via the air supply duct 34a. As described above, since the air outlet 38 is arranged so as to face the slab 24,
The conditioned air 52 is supplied to the slab 24 in a vertical direction. Therefore, cold heat is applied to a deep portion of the area of the slab 24 in contact with the conditioned air 52, and the heat storage effect can be enhanced.

The conditioned air 52 supplied from the air outlet 34a moves along the surface of the slab 24 of the zone A as shown by the arrow 52a, and moves toward the slab 24 of the zone A which comes into contact with the conditioned air 52. To apply cold heat.

When the conditioned air 52 collides with the beam 48a, the conditioned air 52 moves below the beam 48a. In the present embodiment, the conditioned air 52 is cooling air, which has a higher specific gravity than ordinary air, and
Try to descend inside. However, as described above, beam 48
a guide plate 50 is provided at a position below the beam 4a.
An air path is formed between 8a and the guide plate 50. For this reason, the conditioned air 52 is guided into the air path and is prevented from descending, and the beams 48 are indicated by arrows 52b.
a Move to the slab 24 side of the outer zones (adjacent zones) B and C. As described above, since the inclined surface of the guide plate 50 is curved in a concave shape, the conditioned air 52 comes into contact with the slab 24 at an angle perpendicular to or close to the slab 24, and can apply cold heat to the inside of the contacted slab 24. .
The conditioned air 52 applies cold heat to the contacted slab 24 surface while moving along the slab 24 surface of the zone B or the zone C outside the beam 48a as indicated by an arrow 52c. The conditioned air 52 having accumulated heat in the slabs 24 in the zones B and C descends in the ceiling chamber 28 and is discharged from the ceiling chamber 28 to the air conditioner 32 via the exhaust path 36. By repeatedly performing these steps, the heat treatment for the slab 24 is performed.

As described above, since heat can be stored over the entire area where the slab 24 is to be stored, the heat storage effect of the slab 24 can be enhanced. In particular, slab 2
In the case of adding to 4, the area of the slab 24 that can be used for heat storage can be increased from only the zone A to the zones A, B, and C as compared with the related art, and the heat storage effect can be greatly enhanced. In addition, the skeleton thermal storage type air conditioning system 20 in the present embodiment includes an air conditioner 32 generally used.
Since the air supply duct 34 and the like can be applied as they are, a system can be easily formed even in an existing building or the like. Further, a guide plate 50 which is a guide plate
Is provided, a high heat storage effect can be obtained without increasing the number of the air supply ducts 34 and the outlets 38, and it can be formed at low cost and in a short period of time.

In the case of performing the heat radiation processing in the skeleton thermal storage type air conditioning system 20, air can be circulated between the ceiling chamber 28 and the floor of the room 22 through the ventilation holes 51. Thus, the warm air rises toward the ceiling chamber 28 and the cool air falls toward the floor of the chamber 22. The cold heat stored in the slab 24 is transmitted to the air near the slab 24, so that a heat radiation process is performed. As described above, since heat is stored in the slab 24 over the entire area to be stored, a high heat dissipation effect can be exhibited.

In some cases, air conditioning is actively performed through the air conditioner 32. At this time, the switching damper 42 on the slab 24 side is closed and the switching damper 44 on the ceiling member 30 side is opened. Thus, the conditioned air can be positively supplied to the floor of the room 22. At this time, the warm air rises to the ceiling chamber 28 through the ventilation hole 51,
The gas is discharged to the outside through the exhaust path 36.

FIG. 2 is an explanatory view of a skeleton thermal storage type air conditioning system 20b according to a second embodiment of the present invention. Note that the same members as those in the previous embodiment are denoted by the same reference numerals, and description thereof will be omitted. In the present embodiment, the direction of the outlet 38b of the conditioned air 52 is provided toward the zone B side. For this reason, the conditioned air 52 supplied from the outlet 38b is supplied as shown by an arrow 52a in FIG. In the present embodiment, the guide plate 50
Are not provided on the beams 48b and 48c on the zone D side, but only on the beams 48a on the zone B side. in this way,
The guide plate 50 does not need to be provided for all the beams 48 during heat storage, and the beams 4 through which the conditioned air 52 passes.
Guide plate 5 to be installed because it is sufficient to provide it only on 8a
The number of zeros decreases, and the cost burden can be reduced accordingly.

In the embodiment, the guide plate 50 is such that the inclined surface of the guide plate 50 is curved in a concave shape. However, the present invention is not limited to this, and the guide plate 50 may have a curved inclined surface or a flat inclined surface. May be used. In the embodiment, the air passage is formed between the guide plate 50 and the beam 48a. However, an air passage may be formed inside the guide plate 50. In the embodiment, the guide plate 50 is used as the guide plate. However, the present invention is not limited to this. Any structure may be used as long as the structure can prevent the air below the overhang portion such as a beam from descending and guide the air upward. . Also,
It is preferable to provide the outlet 38 of the conditioned air 52 so as to face the slab 24 as shown in the embodiment, in order to increase the heat storage efficiency, but it is not limited to this mode.

[0026]

As described above, according to the present invention, the conditioned air colliding with the overhang is guided to the air passage formed between the guide plate provided below the overhang and the overhang. Since heat is stored in the slab by contacting the slab surface outside the overhang portion, heat can be stored in the entire region of the slab to be subjected to heat storage. Therefore, the slab can be effectively used, and a high heat storage effect can be maintained even when storing cold heat as well as when storing heat.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a skeleton thermal storage type air conditioning system according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a skeleton thermal storage type air conditioning system according to a second embodiment of the present invention.

[Explanation of symbols]

20 ...... Building thermal storage type air-conditioning system, 22 ......
4 ... slab, 26 ... slab, 28 ... ceiling chamber, 30 ... ceiling member, 32 ... air conditioner, 34
…… Air supply duct, 36 …… Exhaust duct, 38 ………
Air outlet 40, air outlet 42, switching damper 44, switching damper 48, beam 50
... Guide plate, 51 ... Vent, 52 ... Air-conditioned air

Claims (2)

[Claims] An air-conditioning air can be introduced into a ceiling chamber provided in a building, a slab forming the ceiling chamber is stored by the air-conditioning air, and a slab that defines the slab into a plurality of zones is provided below a projecting portion. A frame heat storage type air conditioning system, wherein a guide plate is provided at a distance to form an air passage for guiding the conditioned air to a zone adjacent to the overhang portion. 2. The air-conditioning system according to claim 1, wherein the guide plate has a diverting surface that forms an upward flow on a zone adjacent to the overhang.