JPH11210205A - Floor blowing type air-conditioning structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent thermal influence by a floor slab and improve profitability and execution by supplying air-conditioning air from a plurality of floor air outlets opened at the appropriate position of a floor to the indoor and executing a specific shape heat insulator on the face of the floor slab over a prescribed range or the entire face from the air outlet of the air-conditioning air. SOLUTION: Air-conditioning air is supplied to the inside of a room through the air flowing route of a double floor disposed under a floor and a plurality of floor air outlets 4 and a heat insulator 1 is executed on the face of a floor slab 10 from the air outlets 5 of an air conditioner 3 over a prescribed range. The air-conditioning air just after blown from the air outlet 5 is not directly brought into contact with the floor slab, and influence by thermal exchange with the floor slab 10 is prevented by passing it on the upper face of the heat insulator 1. Since execution is performed so that the heat insulator 1 surrounds a pedestal support 6 set for supporting a double floor panel, the heat insulator 1 has the similar size shape with the double floor panel 12, thickness of a corner is 10 mm or less, a non-through hole of the residual thickness of at most 10 mm is provided in the neighborhood of the four corner, and execution can be performed without any gap. Thereby the compatibility of air-conditioning performance and profitability in execution is contrived.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor-blowing air-conditioning structure in which a double-floor space has an air circulation path.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, a floor-blowing type air-conditioning structure in an office building or the like having a large floor area has a concrete floor slab 10 and a floor arranged at a predetermined height H above the slab. And a plurality of floor outlets 4 which are opened at appropriate positions on the floor 2 and have louvers for blowing on the opening surface.
This is a system in which the conditioned air is supplied into the room as indicated by an arrow, and it is economical because a dedicated duct pipe is not required.

[0003]

However, in this method, the conditioned air also comes into contact with the concrete surface constituting the floor slab 10, and a part of the heat is exchanged as indicated by the dashed arrow. In particular, it takes a long time to reach the desired air-conditioning temperature especially at the start of operation, such as during the winter or summer, when the temperature difference between the indoor and outdoor areas is large. In addition, since the heat capacity of concrete is large, the heat exchanged with the indoor air is accumulated even after the operation is stopped, which affects the air conditioning operation on the next day, and the floor outlets 4 depending on the distance from the air conditioner 3. The temperature from the head varies. When the room is not partitioned by partition walls, even if there is a slight difference in the temperature of the conditioned air from each floor outlet 4, the room temperature distribution is averaged due to complete diffusion in the room. However, when the room is partitioned by a partition wall or the like, a temperature distribution corresponding to the blowing temperature is formed, and there is a drawback that the temperature may be too hot or too cold depending on the section. Therefore, in an office where the plan of the partition wall is undecided, it is desirable that the outlet temperature be within the approximate set temperature of ± 0 to 2 ° C. even in consideration of the characteristics of the air conditioning system, thereby preventing the thermal effect of the floor slab 10. There is a need to. As a countermeasure in this case, it is sufficient to provide sufficient heat insulation to the floor slab 10, but the cost required for the heat insulation and the ease of laying between the pedestal 6 and the support bolt 7 used as a support of the double floor at the time of construction. Had to be considered. Then, this invention was made in order to solve the above problems, and the purpose is to
It is an object of the present invention to provide an air conditioning structure of a floor blow-out type in which the thermal effect of the floor slab 10 in the seed floor blow-out type is prevented while taking into consideration the effects on economy and workability.

[0004]

The object of the present invention is to provide an air circulation path between a floor slab 10 of the present invention and a floor 2 disposed above the floor slab 10 by using an air conditioner 3 disposed at one end below the floor. While circulating the blown-out air,
The conditioned air is supplied into the room through a plurality of floor outlets 4 opened at appropriate positions on the floor, and a heat insulating material is provided on the surface of the floor slab from the outlet 5 of the air conditioner 3 over a predetermined range or over the entire surface. It is solved by constructing.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
The present invention distributes conditioned air blown from an air conditioner 3 disposed at one end under the floor as an air circulation path in a double floor between the floor slab 10 and the floor 2 disposed above the floor slab 10, and the floor 2, in a floor blowing system for supplying the conditioned air into the room through a plurality of floor blowing ports 4 opened at appropriate positions or from the entire floor, from the blowing port 5 of the air conditioner 3 over a predetermined range or the entire surface. The heat insulating material 1 is constructed on the surface of the floor slab (claim 1). Further, the heat insulating material 1 needs to be constructed so as to surround the pedestal support 6 installed to support the double floor panel 12 when forming the double floor. The shape shall be devised so that it can be laid well. The double floor is generally provided by a combination of an upper plate 8, support bolts 7 and a lower plate 9.
And a method of supporting four intersections of the double floor panel 12 (hereinafter referred to as a pedestal method), and a method of embedding nuts at four corners of the double floor panel 12 and fitting the leg bolts 11 into the nuts to support the nuts. (Hereinafter referred to as leg bolt system).

[0006] In order to construct the panel in a good manner, the heat insulating material 1
Is molded in advance to the same size as the double floor panel 12, so that one heat insulating material 1 can be applied every time one panel is applied (claim 2). First, in the case of the pedestal system, R-shaped notches 13 are provided at four corners of a quadrangular prism-shaped heat insulating material in order to escape the support bolts 7 of the pedestal, and notches 1 are formed in lower side portions in order to escape the lower plate 9.
4 is provided (claims 3, 4, and 5).

In the leg bolt system, through holes 15 slightly larger than the diameter of the leg bolts 11 are provided at the four corners where the leg bolts 11 are installed.

When the heat insulating material 1 is used for both the pedestal type and the leg bolt type, a structure in which an R-shaped notch 13 for the pedestal support bolt 7 and a through hole 15 for the leg bolt 11 can be easily formed. Desirably, in this patent, the thickness of the heat insulating material in the portion where the R-shaped notch 13 is formed at the corner portion is 10 mm or less so that the notch can be easily formed by hand, and the through hole 15 of the leg bolt 11 should be provided. The remaining thickness of the heat insulating material 1 at the position is set to 10 mm or less so that the portion can be easily penetrated by a finger or a rod (claim 7). In order to prevent the position of the heat insulating material 1 from shifting when the heat insulating material 1 is laid on the floor, a convex portion 16 is provided on at least one side and a concave portion 17 is provided on the other side so as to be fitted. It is desirable (claim 8). Although the material of the heat insulating material 1 is not particularly limited, it is economically advantageous to use a polystyrene foam bead material having a high heat insulating effect and easy molding (claim 9).

According to the above configuration, the heat insulating material 1 prevents direct contact between the airflow blown out of the air conditioner 3 and the floor slab 10, thereby reducing the influence of heat exchange between the conditioned air and the floor slab. The economical effect of improving the performance of the system and preventing heat loss can be obtained. In the case of claim 2, the heat insulating material 1 having the same size as the double floor panel 12 can improve the efficiency in workability.
According to the third, fourth and fifth aspects, it is possible to improve efficiency particularly in the workability in the pedestal method. In the case of claim 6, it is possible to improve efficiency particularly in workability in the construction method of the leg bolt method. In the case of claim 7, the same heat insulating material 1 can be used as the heat insulating material 1 in both the pedestal method and the leg bolt method, and the heat insulating material 1 is formed. Efficiency in workability and efficiency in economy can be achieved by eliminating mold cost and waste of manufacturing a plurality of types of heat insulating materials. In the case of claim 8, displacement of the heat insulating material 1 can be prevented, the workability and the necessity of fixing the heat insulating material 1 after the work with a tape or an adhesive material can be eliminated, and the efficiency can be improved with economical efficiency. Can be achieved. In the case of claim 9, the heat insulating performance of the heat insulating material 1 can be obtained economically.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a cross-sectional view of an air conditioning structure in a floor blowing system according to the present invention, and FIG. 2 is a plan view of an air conditioning area under the floor. Since the basic structure of the floor blowing method is the same as that of the related art, the same parts as those of the related art in FIG. 3 are denoted by the same reference numerals, and only the parts to be newly added will be described using different signs. That is, in the present invention, the air flow path in the double floor between the concrete floor slab 10 and the floor 2 arranged at a predetermined height H above the concrete floor slab 10 is substantially the same as in the prior art, and the center in the short direction under the floor is used. The conditioned air is supplied into the room as shown by arrows through a plurality of floor outlets 4 provided with blowout louvers on the opening surface. In the present invention, the air outlet 5 of the air conditioner 3 is provided.
The heat insulating material 1 is applied to the surface of the floor slab 10 over a predetermined range from.

The heat insulating material 1 is not particularly limited, such as sticking a molded resin or glass fiber material, or applying a powdered heat insulating material by spray coating. If the heat insulating material 1 having the shape of a quadrangular prism having the same size as the floor panel 12 is used, the construction can be performed particularly well. FIG. 1 shows a case in which a quadrangular prism-shaped heat insulating material 1 having a thickness of 50 mm and a horizontal and vertical dimension of 500 mm is applied.

The conditioned air blown out from the outlet 5 of the air conditioner 3 blows out from the floor outlet 4 and reaches the floor outlet 4 furthest from the outlet 5 of the air conditioner 3. It is important that the floor insulation is laid at least up to the farthest area of the floor outlet 4. By doing so, the conditioned air immediately after being blown out from the outlet 5 of the air conditioner 3 passes through the upper surface of the heat insulating material 1 without directly contacting the floor slab 10, and thereby the floor slab 1
The air is supplied to the room through each floor outlet 4 while being maintained at the approximate set temperature without being affected by heat exchange with zero. In addition, since the conditioned air which reached the floor other than the construction area of the heat insulating material 1 is affected by the exposed floor slab 10, it is preferable to apply the heat insulating material 1 to the entire floor area. You. Thereby, it is considered that the temperature of the conditioned air passing over the heat insulating material 1 is not affected by the heat of the floor slab 10 even at the floor outlet 4 far from the outlet 5 of the air conditioner 3. However,
If the installation area of the heat insulating material 1 is 80% or less of the air conditioning area, or if the heat insulating material is not installed under the floor of the floor outlet 4 far away from the outlet 5 of the air conditioner 3, the target temperature is within the target temperature. Otherwise, the conditioned air is heat-exchanged to the floor slab, resulting in a heat-efficient loss and uneconomical.

FIG. 4 shows a heat insulating material 1 used for a pedestal system. FIG. 5 shows a heat insulating material 1 used for leg bolts. FIG. 6 shows the heat insulating material 1 used for both the pedestal system and the leg bolt system. The heat insulating material 1 of FIG.
It is 50 mm thick and 50 mm wide,
In the four corners, the thickness of the R8 mm portion is 5 mm. At a position 25 mm from each of the four corners in the vertical and horizontal directions, the diameter of the heat insulating material is 5 mm and the diameter is 18 mm.
In addition, the portion 60 mm inside from the four sides on the back side has a thickness of 45 mm.
mm. When this heat insulating material is used as a pedestal system, a portion of R8 having a thickness of 5 mm at the four corners is cut out by hand and laid between the pedestals.
16mm) bolts, and can be installed without gaps. In addition, the lower plate of the pedestal fits in the portion where the thickness of the back surface is 45 mm, and the heat insulating material can be installed in close contact with the slab without being lifted by the lower plate. When using the leg bolt method, the diameter of the heat insulating material is 5 mm and the diameter is 18 mm.
Is pierced with a hand or a rod-shaped object such as a bolt to form a through hole. In this state, work is performed on the slab, and from there, the leg bolt double floor panel is worked.

[0014]

Conventionally, both of the pedestal type and the leg bolt type have conventionally been used for the case of applying a heat insulating material to, for example, a vertical three-shaft horizontal 6
A heat insulating material having a thickness of 50 mm and a thickness of 50 mm is cut (for example, 480 mm × 6 mm) into a size that can be inserted between the pedestals, laid between the pedestals, and 4 mm in advance to fill a gap between the support bolts of the pedestals.
A heat insulating material cut to 80 × 20 mm is laid. Furthermore, since this heat insulating material is placed on the lower plate of the pedestal and does not directly contact the slab, it is very unstable. It was time-consuming, such as bonding together with aluminum tape. In addition, when the heat insulating material is conventionally constructed by the leg bolt method, it is necessary to lay the heat insulating material which has been cut in advance, avoiding the leg bolt. Since the number of leg bolts is four per floor panel, that is, 16 per m ² , it is not practical to cut and install the heat insulating material while avoiding the leg bolts. However, as described in detail in the above embodiments, in the air conditioning structure of the floor blowing type according to the present invention, there is no direct contact between the airflow immediately after blowing from the air conditioner and the floor slab due to the heat insulating material, and the air-conditioned air The effect of heat exchange between the floor and the floor slab can be reduced, and the temperature of the conditioned air can be kept within the expected temperature range. In addition, by making the shape of the heat insulating material excellent in workability, there is an advantage that it is possible to achieve both air conditioning performance and economy during construction.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a floor blowing type air conditioning structure according to the present invention.

FIG. 2 is a plan view showing an air conditioning section under the floor.

FIG. 3 is a cross-sectional view showing a conventional floor blowing type air conditioning structure.

FIG. 4 is a cross-sectional view and a plan view showing a pedestal-type heat insulating material.

FIG. 5 is a cross-sectional view and a plan view showing a heat insulating material for a leg bolt system.

6A and 6B are a cross-sectional view and a plan view showing a heat insulating material for both the pedestal type and the leg bolt type.

FIG. 7 is a cross-sectional view when a heat insulating material is applied by a pedestal method.

FIG. 8 is a cross-sectional view when a heat insulating material is applied by a leg bolt method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulation material 2 Floor 3 Air conditioner 4 Floor outlet 5 Air outlet of air conditioner 6 Pedestal 7 Support bolt 8 Upper plate 9 Lower plate 10 Floor slab 11 Leg bolt 12 Double floor panel 13 R-shaped notch 14 Lower surface side Notch 15 through hole 16 convex 17 concave

Claims (9)

[Claims] 1. An air flow path in a double floor between a floor slab and a floor disposed above the floor slab to flow conditioned air blown from one end of the floor or an air conditioner disposed below the floor, and the floor. The floor slab is provided with a heat insulating material over a range from the front of the air outlet of the air conditioner to at least the floor outlet or through the entire floor through a plurality of or all floor outlets opened at appropriate positions. The air-conditioning structure of the floor blowing method characterized by the following. 2. The air-conditioning structure according to claim 1, wherein the heat insulating material is in the form of a quadrangular prism having the same horizontal and vertical dimensions as the double floor panel. 3. The air-conditioning structure according to claim 1, wherein the heat insulating material has a quadrangular prism shape, and has cutouts at four corners thereof. 4. The heat insulating material according to claim 1, wherein the heat insulating material has a quadrangular prism shape, and cutouts are provided on four sides of a lower surface thereof.
The air-conditioning structure of the floor blowing method described in the above. 5. The floor blowing system according to claim 1, wherein the heat insulating material has a quadrangular prism shape, and cutouts are provided at four corners thereof, and cutouts are provided at four sides of a lower surface thereof. Air conditioning structure. 6. The air-conditioning structure according to claim 1, wherein the heat insulating material has a quadrangular prism shape and through holes are provided near four corners thereof. 7. The heat insulating material has a quadrangular prism shape, a thickness of four corners is 10 mm or less, and a non-through hole with a remaining thickness of 10 mm or less is provided near the four corners, and a lower surface thereof. 3. The air-conditioning structure of claim 1, wherein the four sides have cutouts. 8. The air-conditioning structure according to claim 1, wherein the heat insulating material has a shape having a convex portion and a concave portion on at least one side. 9. The air-conditioning structure according to claim 1, wherein the heat insulating material is a bead expanded polystyrene.