JPH08296872A - Floor structure for radiant air conditioning of building - Google Patents

Abstract

PURPOSE: To obtain a floor structure for air conditioning which has a high efficiency of radiant air conditioning and a high degree of freedom in the design of an air-conditioning air duct and facilitates a shift and a change of the position of installation of the air-conditioning air duct after completion of a building. CONSTITUTION: A floor panel 8 having a large heat capacity and high conductivity is fixed on a floor slab 4 by support rod bodies 9 and the upper surface of the floor slab 4 is covered with a heat insulating material 21. An air- conditioning air duct is formed in a space part 22 between the floor slab 4 and the floor panel by providing a heat insulating wall material having large flexibility and heat insulating properties in a stretching-around manner and is made to communicate with air-conditioning equipment through a diffusion area. According to this constitution, it is possible to make conditioned air flow only to the indoor site necessitating air conditioning and to subject it to heat exchange with a high efficiency with the floor panel and also a shift of the air-conditioning air duct is facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a radiant air conditioning floor structure for air conditioning a building room with radiant heat.

[0002]

2. Description of the Related Art As a floor structure for air conditioning of a building, there are those disclosed in Japanese Utility Model Publication Nos. 59-86512, 61-3336, etc., all of which have a double floor space. The air-conditioning of the entire room is achieved by dividing the room into fixed parts such as meandering or diversified with joists and partition walls.

The technology disclosed in the above publications is
After the construction of the building is completed, there is a problem that the air conditioning air passage cannot be changed, and not only the degree of freedom in designing the air conditioning part is small,
There are also problems such as low air conditioning efficiency due to insufficient heat capacity and thermal conductivity of the floor panel, and inability to evenly distribute the air blown out from the air conditioner to each air conditioning air passage.

[0004]

In view of the problems of the conventional air-conditioning floor structure, the present invention has a high degree of freedom in arranging the air-conditioning air passage and allows movement of the air-conditioning air passage even after completion of a building. It is free, has high air conditioning efficiency by radiation, and has high heat exchange efficiency between the air blown from the air conditioner and the floor panel. Even if there are multiple air conditioning air passages, the air conditioning air can flow evenly into each passage. An object is to provide a floor structure for radiant air conditioning.

[0005]

According to a first aspect of the present invention, a floor panel having a large heat capacity and a high thermal conductivity is fixed on a floor slab by a supporting rod having a predetermined height to form a floor portion. The upper surface of the slab is covered with a heat insulating material, the air outlet of the air conditioner is opened in the space between the floor and the floor slab, and a plurality of flexible heat insulating wall materials are arranged in a drawn shape in the space. A space between the heat insulating wall members is used as an conditioned air passage, and a conditioned air diffusion area is provided in the conditioned air passage facing the air outlet.

According to the second aspect of the invention, the diffusion area of the conditioned air is formed by the duct in the direction orthogonal to the air outlet.

According to the third aspect of the present invention, the floor panel has a structure in which a metal plate having high heat conductivity is fixed to the back surface of the main body formed of a material having a large heat capacity such as concrete or calcium silicate.

According to a fourth aspect of the present invention, the heat insulating wall material is a forming material in which the entire outer surface of the inorganic fiber mat is covered with a laminate sheet of a metal foil and a synthetic resin-based reinforcing sheet.

According to the fifth aspect of the present invention, an air-conditioning air recirculation port whose flow rate can be adjusted is opened toward the room at a position symmetrical to the position of the air outlet of the air-conditioning device in the floor structure, and the air intake of the air-conditioning device is taken into consideration. The mouth is open to the room.

[0010]

According to the first aspect of the present invention, the floor panel is provided with the supporting rods having the heights selected in advance, on the floor slab, at intervals defined by the height of the supporting rods, and each supporting rod. It is fixed with a wide gap between them.

Therefore, the heat insulating wall material for forming the conditioned air passage can be freely arranged in a drawn shape through the space, and the degree of freedom in designing the passage is significantly improved.

Further, even after the construction of the building is completed, it is possible to easily change the arrangement of the heat insulating wall material only by removing the floor panel of a required portion, so that it is possible to change the use and purpose of use in the building interior. It is possible to easily move or change the conditioned air passage.

Since the upper surface of the floor slab is covered with a heat insulating material and the conditioned air passage is formed of a heat insulating wall material, heat loss of the conditioned air does not occur, and the floor panel has a large heat capacity and a high thermal conductivity. Therefore, the efficiency of radiation air conditioning by the heat of the conditioned air is significantly improved.

An air-conditioning air diffusion area is provided between the air outlet of the air conditioner and the air-conditioning air passage facing the air outlet, and the air-conditioning air blown from the narrow outlet is diffused in a wide range. Since the air flows into the conditioned air passage, it is possible to prevent the conditioned air from flowing only through a biased portion of the passage.

According to the second aspect of the present invention, the conditioned air blown from the air outlet flows in the direction orthogonal to the duct,
Since it flows into the corresponding conditioned air passage from the outlet formed in the duct, the amount of conditioned air supplied to the conditioned air passage immediately before the outlet and the conditioned air passage separated from the outlet is controlled. It is possible to make the air-conditioning effects even by making them almost equal.

According to the third aspect of the present invention, the heat quantity of the conditioned air is efficiently conducted to and stored in the floor panel, so that the efficiency of radiation air conditioning by the floor surface is significantly improved.

According to the invention of claim 4, there is obtained a heat insulating wall for forming an air-conditioning air passage which is flexible and has a high heat insulating property, and is lightweight and easy to handle.

According to the fifth aspect of the present invention, the heat exchange time between the conditioned air sent from the air conditioner and the floor panel can be adjusted long or short by adjusting the flow rate of the conditioned air recirculation port, and the heat energy by sufficient heat exchange can be adjusted. It is also possible to effectively use the above, to prevent turbulence of indoor air, etc., and to prevent dew condensation on the window glass or the like at the opening position of the reflux port in winter.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 and FIG.
This is a first embodiment in which the inventions of claim 1, claim 2, claim 3, claim 4, and claim 5 are applied to the room 2 of the LDK on the first floor.

The room 2 is partitioned by a wall 3, a floor slab 4 and a ceiling slab 5, and an conditioned air passage 7 is formed between the floor slab 4 and the floor portion 6.

The floor 6 is made of a material having a large heat capacity and high thermal conductivity, and a plurality of floor panels 8 formed into unit panels having a predetermined area are set on the floor slab 4 at a predetermined height. It is formed by being fixed by a group of a plurality of supporting rods 9.

As shown in FIG. 3, the floor panel 8 is a structure in which a metal plate 12 having high heat conductivity is fixed to a back surface 11 of a main body 10 made of a material having a large heat capacity such as concrete and calcium silicate. The surface 13 is provided with an appropriate finishing material.

Although the metal plate 12 of the floor panel 8 shown in FIG. 3 has a flat shape, the main body 10 and the metal plate 12 may have a corrugated form 13 as shown in FIG. 4 in order to increase the heat transfer area. As shown in FIG. 5, the dimple-shaped form 14 may be used.

An example of the support rod 9 is shown in FIG. 6, and a screw rod 16 is fixed to a base plate 15 fixed to the upper surface of the floor slab 4 with an adhesive, and a support plate 17 is attached to the screw rod 16 by a nut-shaped boss portion. 18 and a fixing nut 19 are fixed at a predetermined height, and the four floor panels 8A, 8B, 8C,
8D butt corners are aligned and fixedly supported by four ridges 20.

The upper surface of the floor slab 4 which is fixedly supported on the floor 6 has a heat-resistant heat insulating material 2 such as phenol foam.
It is covered by 1. In addition, in FIG. 2, a portion indicated by reference numeral 61 on the indoor side of the wall 3 is a heat insulating material 2 shown in FIG.
The rising part 61 near the wall of No. 1 is shown.

The heat insulating material 2 for covering the upper surface of the floor slab 4
1 is not limited to phenol foam, but may be polystyrene foam, polyurethane foam, or the like.

The space 2 between the floor slab 4 and the floor 6.
An air outlet 24 of the air conditioner 23 is opened at 2.

The air conditioner 23 in the illustrated example uses a duct type heat pump air conditioner as an air heat source, but a fan convector or the like can also be used.

A plurality of heat insulating wall members 25 to 31 are provided in the space 22 between the air outlet 24 and a portion of the room 2 that requires air conditioning, that is, the portions indicated by reference characters A, B and C in FIG.
Is circulated to form the conditioned air passage 7.

The heat insulating wall members 25 to 31 have the same structure but differ only in their lengths. As shown in FIG. 7 as a partial cross section, an inorganic fiber mat 32 such as rock wool felt or glass wool felt 32 is used. Is a forming material obtained by coating the entire outer surface of a metal foil such as an aluminum foil and a split sheet of high-density polyethylene with a laminated sheet 33 in which two sheets are laminated so that the crevices intersect in the longitudinal direction, It is flexible, and can be deformed by following the unevenness of the floor panel 8, unevenness of pipes, pipes, etc., and also has elasticity, making it easy to seal the connecting portion, nonflammable, and self-supporting. Configured to have a length of 1
It is preferable to continuously connect those having a length of about m.

The heat insulating wall members 25 to 31 in the illustrated example are
When placed in the spacing portion 22, the height is 10
It is formed to a height H of about 15% compression and has a large width W in order to have self-sustaining property, but the means for providing self-supporting property increases air resistance in the conditioned air passage 7. Any means may be used as long as it does not occur.

A diffusion area 37 of conditioned air is formed in the portions 34, 35 and 36 of the conditioned air passage 7 facing the air outlet 24 of the air conditioner 23.

As shown in FIGS. 1 and 2, the diffusion area 37 in the illustrated example includes a duct 38 communicating with the air outlet 24 of the air conditioner 23 and a pit 40 communicating with a group of outlets 39 of the duct 38. , And the blowout window 41 of the pit 40,
The conditioned air blown out from the air outlet 24 is the duct 3
After being evenly distributed over the entire area of the pit 40 by 8, the appropriate amount corresponding to the vertical cross-sectional area of the passage 7 is distributed from the blowout window 41 of the pit 40 into each air conditioning air passage 7. It is convenient when the air conditioning air passage 7 is moved or changed, which will be described later, that the duct 39 and the blowout window 41 are formed at equal intervals in the duct 38 and the pit 40, respectively.

By attaching a heat insulating material 42 such as phenol foam to the back surface of the floor panel 8 near the diffusion area 37 of the conditioned air, as shown in FIG.
It is possible to prevent overheating and overcooling of the floor 6 near the diffusion area 37.

In the floor structure formed by the floor slab 4 and the floor portion 6, an air conditioner capable of adjusting the amount of conditioned air to be returned to the room is provided at a position symmetrical to the position of the air outlet 24 of the air conditioner 23. The air circulation port 43 is opened.

An example of the conditioned air return port 43 is shown in FIG.
As shown in FIG. 9, a louver-shaped fixed metal fin 45 is provided on the frame body 44, and the movable metal fin 4 is provided on the back surface thereof.
6 is arranged so as to be slidable in the double arrow Y direction along the rail 47, and the movable metal fin 46 is slid by the handle 48. The conditioned air is supplied from the conditioned air passage 7 to the inside of the room by the opening of the opening 49. By adjusting the amount of air blown to the floor 7, the staying time of the conditioned air in the passage 7 is adjusted to be short or long, and the rate at which the amount of heat of the conditioned air is conducted to the floor panel 8 is adjusted.

In winter, the conditioned air recirculation port 43 is arranged below the window 50 to prevent dew condensation on the window glass.

The air suction port 51 of the air conditioner 23 is opened toward the room.

FIG. 10 shows a second embodiment for performing radiant air conditioning of the air-conditioning required areas D, E, F in a relatively narrow room 52, and has the same structure as the heat insulating wall members 25 to 31 of the first embodiment. The heat insulating wall members 53 and 54 are arranged in a laid-out manner in the space portion of the double floor structure having the same structure as that of the first embodiment to form the conditioned air passages 55, 56 and 57.
The end of the conditioned air passage 55 facing the air outlet 59A of 8 is a wide diffusion area 59, and the conditioned air blown from the air outlet 59A is laterally diffused in the wide diffusion area 59 and is limited. Air-conditioned air passages 55, 56, 57 within the area
After that, the air is returned to the room from the air-conditioning air recirculation port 60 having the same structure as that of the first embodiment, and is sucked into the air conditioner 58.

As the heat insulating wall material 25 for forming the air-conditioning air passage used in the present invention, the density of rock wool felt is 50.
It is preferably Kg / m ³ or one having a heat insulation property similar to this, and the height of the space 22 between the floor slab 4 and the floor 6 composed of the floor panel 8 is usually 50 mm to 30 mm.
Although it is set in the range of 0 mm, the range of 50 mm to 150 mm is preferable.

When the floor structure according to the present invention is used for heating by radiant heat, a stand-type air conditioner is used to blow the conditioned air directly into the room to shorten the time required for the room temperature to rise, and when the room temperature rises to a certain temperature. It is preferable to change the air blowing direction toward the conditioned air passage.

The present invention has the constitution described above,
At the time of interior construction of a building, after fixing the support rod 9 group at a predetermined position on the floor slab 4, the upper surface of the floor slab 4 is heat-insulated.
Then, a diffusion area 37 of the conditioned air is formed at a position facing the air outlet 24 of the air conditioner 23.

Next, the heat insulating wall members 25 to 3 are formed so that the conditioned air passages 7 are formed from the diffusion area 37 to the indoor air-conditioning required places, that is, the places indicated by symbols A, B and C in FIG.
1 is arranged between the supporting rods 9 in a drawing shape.

Next, a plurality of floor panels 8 are provided by a supporting rod 9.
Is fixed to form the floor 6 and the conditioned air circulation port 43 is set, and then a flooring or the like is laid on the upper surface of the floor 6 to complete the construction.

FIG. 11 shows the average value of the temperature distribution of the radiant heating result according to the present invention in the March period, in which the air conditioner 23 is operated from 8:45 am to 10:45 am, and is indicated by a symbol G. It shows the temperature change within 24 hours when the air conditioner 23 is stopped when the floor surface temperature reaches 22.5 ° C.

In the figure, the symbol H indicates the temperature at a height of 2 m from the floor surface, and the symbol I indicates the outside air temperature.

FIG. 12 shows the average value of the temperature distribution of the cooling result according to the present invention in the August period, which is 8:50 am
It shows the temperature change within 24 hours when the air conditioner 23 is operated from 9:50 to 9:50, and the air conditioner 23 is stopped when the floor surface temperature indicated by the reference symbol J reaches 25.5 ° C. .

In the figure, the symbol K indicates the temperature at a height of 2 m from the floor surface, and the symbol L indicates the outside air temperature.

As can be seen from the radiation air-conditioning results shown in FIGS. 11 and 12, the floor structure according to the present invention shows only a slight change in the room temperature over time, and the change in the temperature distribution in the height direction is 2 to 2 m at the height of 2 m. It is recognized that the temperature is as low as 3 ° C.

On the other hand, in the conventional radiant air-conditioning system with a double floor structure, the change in the room temperature due to the operation and stop of the air conditioner is remarkable, and 6 to 7 ° C. is remarkable at the height of 2.5 m. Differences in temperature distribution are observed.

In the floor structure for radiant air conditioning according to the present invention, the floor panel 8 is removed from the support rod 9 to form the conditioned air passage 7 when the portion of the room requiring air conditioning changes after the completion of construction. A change in the radiant air-conditioning part can be dealt with only by rearranging the wall members 25 to 31 and fixing the floor panel 8 again.

Incidentally, in the case of the embodiment shown in FIG.
When the surface temperature of the floor panel 8 is 28 ° C., the surface temperature of the floor panel 8 in the part where the air-conditioning air passage 7 is not formed is 16 ° C., and the temperature change in the height direction of the heating part is A temperature decrease of about 2 ° C. was observed at every 50 cm height.

During cooling, in order to prevent dew condensation in the air-conditioning air passage 7, the temperature of the air-conditioning air flowing into the air-conditioning air passage 7 is kept at around 17 ° C. or the air outlet 24 or the diffusion area 3
It is preferable to attach an air blower for blowing the atmosphere into 7.

[0054]

According to the first aspect of the present invention, since the floor panel is fixed on the floor slab by the supporting rod, a wide non-directional space is formed between the floor slab and the floor panel and between the supporting rods. The heat insulating wall material forming the air-conditioning air passage can be freely arranged in a swirl shape, and the air-conditioning air passage can be set without restriction to the place where the air conditioning in the room should be performed, and the degree of freedom in designing the passage. Has the effect of being significantly improved.

Further, even after the construction of the building is completed, the air-conditioning air passage can be freely moved and changed, and the air-conditioning air passage can be easily changed in accordance with the change of the purpose of the room.

Since the upper surface of the floor slab is covered with a heat insulating material, the air conditioning air passage is also formed of a heat insulating wall material, and the air conditioning air does not flow into an unneeded portion of the room, there is no heat loss of the air conditioning air. It also has an effect.

Since the floor panel also has a large heat capacity and a high thermal conductivity, it has the effect of improving the efficiency of radiant air conditioning.

Further, since the diffusion area of the conditioned air is provided between the air outlet of the air conditioner and the conditioned air passage, there is an effect that the conditioned air can flow into each of the conditioned air passages without being biased.

According to the second aspect of the present invention, the conditioned air can flow into the conditioned air passage near the air outlet of the air conditioner and the conditioned air passage at a position distant from the outlet substantially evenly. The effect that the radiation air conditioning effect can be equalized is achieved.

According to the third aspect of the present invention, the heat quantity of the conditioned air is efficiently conducted to the floor panel and stored therein, so that the efficiency of radiant air conditioning by the floor surface is remarkably improved, and even after the air conditioner is stopped, it is long. It has the effect of maintaining the radiation air conditioning effect over time.

According to the fourth aspect of the present invention, since a heat insulating wall material which is flexible and has a high heat insulating property and which is lightweight and easy to handle can be obtained, there is an effect that the design and construction of the air-conditioning air passage are significantly facilitated.

According to the fifth aspect of the present invention, the heat exchange time between the conditioned air and the floor panel in the conditioned air passage can be adjusted to a long or short time by adjusting the amount of the conditioned air that is recirculated by the conditioned air recirculation port, and the conditioned air is retained. It is possible to effectively use the generated heat energy and to prevent the turbulence of the indoor air or prevent the dew condensation of the window glass or the like at the opening position of the air conditioning air return port in winter.

[0063]

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view of a first embodiment.

FIG. 2 is a schematic plan view of what is shown in FIG.

FIG. 3 is a half-cut side view of an example of a floor panel.

FIG. 4 is a half-cut side view of another example of a floor panel.

FIG. 5 is a half-cut side view of still another example of the floor panel.

FIG. 6 is a perspective view of an example of a support rod.

FIG. 7 is a perspective view showing a part of an example of a heat insulating wall material as a cross section.

FIG. 8 is a plan view of an example of an conditioned air return port.

9 is a sectional view taken along line XX in FIG.

FIG. 10 is a schematic plan view of the second embodiment.

FIG. 11 is a diagram showing an average temperature change during heating according to the present invention.

FIG. 12 is a diagram showing an average temperature change during cooling according to the present invention.

[Explanation of symbols]

 1 Building 3 Wall 4 Floor Slab 6 Floor 7 Air Conditioning Air Passage 8 Floor Panel 9 Support Rod 10 Main Body 11 Backside 12 Metal Plate 21 Insulation 22 Spacing 23 Air Conditioner 24 Air Outlet 25 Insulation Wall 32 Inorganic Fiber Mat 33 Laminated sheet 43 Air-conditioning air return port 51 Air suction port

Claims (5)

[Claims] 1. A floor structure in which a floor portion is formed on a floor slab divided by a wall with a space therebetween, and an air-conditioning air passage is formed between the floor portion and the floor slab. A material having high thermal conductivity, a number of floor panels formed into a unit panel having a predetermined area are fixed on a floor slab by a plurality of support rods having a predetermined height to form a floor portion, and The upper surface of the floor slab is covered with a heat insulating material, the air outlet of the air conditioner is opened to face the space between the floor and the floor slab, and the height that densely fills the height of the space. And a heat-insulating wall material having bendability that is flexible along the floor slab surface, and self-supporting property, and a plurality of the heat-insulating wall materials are laid in the space between the air outlet of the air conditioner and a room where air conditioning is required. To form an conditioned air passage, and the conditioned air passage is A floor structure for radiant air conditioning of a building that has a diffusion area for conditioned air in the area facing the air outlet. 2. The radiant air conditioning floor structure for a building according to claim 1, wherein the diffusion area of the conditioned air is a duct formed in a direction orthogonal to a blowing direction of the conditioned air. 3. The back panel of the main body, wherein the floor panel is made of a material having a large heat capacity such as concrete or calcium silicate,
The radiant air conditioning floor structure for a building according to claim 1 or 2, which has a structure in which a metal plate having high thermal conductivity is fixed. 4. The heat insulating wall material is a forming material obtained by coating the entire outer surface of an inorganic fiber mat with a laminate sheet of a metal foil and a synthetic resin-based reinforcing sheet. Floor structure for radiant air conditioning of buildings. 5. An air-conditioning air recirculation port whose flow rate can be adjusted is opened toward the room at a position symmetrical to the position of the air outlet of the air-conditioner in the floor structure, and an air intake port of the air conditioner is opened inside the room. The radiant air-conditioning floor structure for a building according to claim 1, claim 2, claim 3 or claim 4.