JP3418820B2 - Building thermal storage air conditioning system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a building heat storage type air conditioning system for air conditioning a building such as an office building.

[0002]

2. Description of the Related Art As a conventional body heat storage air conditioning system, a body heat storage air conditioning system is known in which a slab is made thick and a hollow slab for storing heat by passing cold and warm air through a large number of hollow portions provided in the slab is stored. In this method, the heat radiation timing can be controlled by the switching damper, but the construction cost of the frame increases, and it cannot be applied to the existing building.

Further, a frame heat storage type air conditioning system utilizing a ceiling chamber shown in FIG. 4 has been proposed. FIG. 4A is a schematic cross-sectional view, and FIG. 4B is a plan view seen in the arrow direction along the line BB of FIG. 4A. Upper and lower slabs 1, 2
A ceiling 3, a ceiling chamber 4 and a chamber 5 are formed in between, and an air conditioner 6 that also serves as a cooling and heating system is suspended in the ceiling chamber 4. The ceiling 3 is provided with a ceiling outlet 7 and ceiling inlets 8 and 9. The ceiling outlet 7 is connected to a discharge side of an air conditioner 6 via a switching damper 10 and an air supply duct 11, and the ceiling inlet 8 is It is connected to the intake side of the air conditioner 6 via the switching damper 12 and the intake duct 13. In the ceiling chamber 4, a switching damper 14 and a slab outlet 15 are provided branching from the air supply duct 11.
Further, a switching damper 16 and a chamber suction port 17 are provided branching from the intake duct 13.

In the above-mentioned air conditioning system, during heat storage operation such as at night, the dampers 10, 12, 16 are closed and the damper 14 is opened, and cool and warm air from the air conditioner 6 is blown out from the outlet 15 as shown by the solid arrow. It blows out toward the slab 1 to store heat in the slab 1, and when the load is high during the day, the dampers 10 and 16 are opened and the dampers 12 and 14 are closed, as shown by the dotted arrow.
The heat stored in the upper floor slab 1 is radiated into the room 5 through the ceiling inlet 9, the ceiling chamber 4, the air conditioner 6, and the air supply duct 11. When heat radiation is not required, the dampers 10 and 12 are opened and the dampers 14 and 16 are closed, and the air in the chamber 5 is circulated through the intake duct 13, the air conditioner 6, and the air supply duct 11 as shown by the white arrow. I am trying.

[0005]

However, in the above conventional heat storage type air conditioning system, when the heat radiation is unnecessary, the room 5
Although the air inside is sucked in through the intake duct 13 to suppress the heat radiation from the ceiling chamber 4, since the ceiling chamber 4 has a large volume and a large surface area, the radiation loss is large and the stored energy is released from the start time. As a result, in terms of power load leveling (peak load reduction), in the case of air conditioning, a considerable amount of heat is dissipated before the most important midsummer time period from 1pm to 4pm, and air conditioning peak load It has a problem that it cannot be reduced.

[0006] Further, at the time of heat radiation, the air is sucked from the ceiling suction port 9 to the air conditioner 6 via the ceiling chamber 4, but the amount of air that comes into direct contact with the upper floor slab 1 is limited and the surface wind velocity is slow, so that the heat radiation efficiency is high. Has a problem of low.

Further, when heat is stored, since a short circuit of cold and warm air is made in the ceiling chamber 4, there is a problem that it is difficult to store heat uniformly in the slab and the heat storage efficiency is low. Therefore, in order to increase the heat storage capacity, it is necessary to increase the number of slab outlets 15 and there is a problem that the cost increases.

The present invention solves the above-mentioned conventional problems and problems, and provides a body heat storage type air conditioning system capable of storing heat in the body at low cost and contributing to leveling of the electric power load. The purpose is to do.

[0009]

To this end, the core of the present invention is
The body heat storage type air conditioning system includes a room R formed between upper and lower slabs 1 and 2, and a ceiling chamber 4 formed at an upper part of the room.
A double floor 20 formed in the lower part of the chamber, a double floor chamber 21 formed between the double floor and the slab, a partition member 39 provided in the double floor chamber, and a pair on the window side. Column integrated type duct duct 23 provided on the column of the column, the conditioned air from the air conditioner 27 is blown into the room by the air supply duct 29, and the room air is supplied to one of the retinal ducts 23, the double floor chamber 21, and the other retinal duct 23. Through air conditioner 27
It is characterized in that it can be selectively switched between a path for circulating air in the room and a path for circulating air in the room to the air conditioner via the ceiling chamber 4. It should be noted that the numbers added to the above-described configurations are compared with the drawings for easy understanding of the present invention, and the present invention is not limited thereto.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show one embodiment of a body heat storage type air conditioning system of the present invention, and FIG.
Is a schematic cross-sectional view, FIG. 1B is a cross-sectional view taken along the line BB of FIG. 1A in the direction of the arrow, and FIG. 2 is a perspective view of the pillar-integrated retard duct of FIG.

A ceiling 3, a ceiling chamber 4 and a room R are formed between the slabs 1 and 2 on the upper floor and the lower floor, and a low double floor 20 serving as an OA floor is arranged below the room R. Is
A double floor chamber 21 is formed between the double floor 20 and the slab 2. A pillar-integrated type return duct 23 is arranged on each of the columns 22 on the window W side of the chamber R, and a window counter 24 is arranged between the respective return ducts 23. The ceiling 3 is provided with a plurality of ceiling outlets 25, and on the slab 2 on the side opposite to the window of the room R, a central heat source type cold / hot water supply system or a heat pump type air conditioner 27 for both heating and cooling is installed. ing.

Inside the ceiling chamber 4, each ceiling outlet 25 is provided.
The air supply duct 29 connected to the
9 is connected to the discharge side of the air conditioner 27. A chamber suction port 30 is provided on the air conditioner 27 side in the ceiling chamber 4, and a switching damper 31 and a suction duct 32 are provided.
Is connected to the suction side of the air conditioner 27 via. ing. Further, a chamber suction port 33 is provided on the air conditioner 27 side in the double floor chamber 21, and the switching damper 3 is provided.
It is connected to the suction duct 32 via 5. Note that in FIG. 1 (A), 37 indicates a heat insulating material provided on the lower surface of the slab 2, and in FIG. 1 (B), 36 indicates a body heat storage section.

In FIG. 2, the pillar-integrated type return ducts 23 integrally formed around the columns 22 and 22, the window counters 24 arranged between the respective return ducts 23, and the ceiling slits formed in the ceiling 3 are shown. 3a is shown. An air passage 23a is formed between the pillar-integrated return duct 23 and the pillar 22, a suction port 23b is formed above the ceiling 3 of the pillar-integrated return duct 23, and below the double floor 20. The discharge port 23c is formed.

The operation of this embodiment having the above configuration will be described. During the heat storage operation at night, the switching damper 31 is closed and the switching damper 35 is opened to supply cold (warm) air or outside air from the air conditioner 27 to the air supply duct 29 and the ceiling outlet 2.
The air in the room R is circulated to the air conditioner 27 through the ceiling slit 3a, the pillar-integrated return duct 23, the double floor chamber 21, and the chamber suction port 33 through the chamber 5. At this time, in the double-floor chamber 21, the velocity of the inflowing air and the contact area ratio with respect to the skeleton are larger than in the conventional ceiling chamber utilization method, and the heat storage efficiency (heat exchange efficiency) can be increased.

During the air conditioning operation in which the stored heat is not dissipated, the switching damper 35 is closed and the switching damper 31 is opened to make the air conditioner 2
7, cold (warm) air is blown into the room R through the air supply duct 29 and the ceiling outlet 25, and the air that has conditioned inside the room R is supplied to the ceiling slit 3 a, the ceiling chamber 4, and the chamber suction port 3.
0, it circulates to the air conditioner 27 through the suction duct 32. The heat energy stored in the slab 1 on the upper floor at night is
Although the return air in the ceiling chamber 4 is radiated, the wind velocity in the ceiling chamber 4 is slow and the ratio of the contact area is small, so that the velocity can be suppressed as compared with the conventional method. Further, the surface most necessary for heat storage and storage is on the opposite side of the ceiling, and since there is a carpet with a relatively high heat insulating property on the surface, the heat on the surface on the double floor side is stored for the longest time.

During the air conditioning operation for radiating the stored heat, the switching damper 31 is closed and the switching damper 35 is opened to supply cold (warm) air from the air conditioner 27 as in the heat storage operation.
9. The air that has been blown into the room R through the ceiling outlet 25 and air-conditioned in the room R is supplied to the ceiling slit 3a, the pillar-integrated type return duct 23, the double floor chamber 21, and the chamber suction port 3
It circulates to the air conditioner 27 via 3. At this time, in the double floor chamber 21, the heat energy stored in the slab 2 at night is retained until a time period required by the heat insulating effect of the double floor 20, and is radiated to the air flowing through the double floor chamber 21. To be done. In this case as well, the heat dissipation efficiency is increased for the same reason as when storing heat.

During the heat radiation operation, especially during the cooling operation, the ethane air sucked through the slit 3a in the upper part of the window becomes hot due to the solar radiation. This high-temperature air is blown under the floor as it is, and contacts the slab at a temperature higher than room temperature to exchange heat. Since this temperature difference is larger than that in the conventional method in which air is supplied from the return air port provided on the entire ceiling, high heat exchange efficiency can be obtained. Further, the higher the solar radiation load, that is, the higher the overall load, the slit 3a.
If the load peaks after the start of heat dissipation, such as on the western side, the temperature of the intake air from the engine will rise, and the temperature of the return air will rise to the peak and maintain the temperature difference even if the body warms up due to heat absorption. It becomes possible. Furthermore, since the difference in design supply air temperature can be made larger than the conventional one by increasing the return air temperature, it is possible to reduce the amount of air blow and save energy in the transfer power. Furthermore, due to this efficiency, the slab surface temperature after heat dissipation becomes higher than that of the conventional method, and when heat is stored (during cooling), it is cooled to a certain temperature by the outside air, and then
By storing heat with cold air, the amount of cooling heat by the outside air increases, and energy can be saved.

Further, in the present invention, the following heat storage and heat dissipation effects are produced. That is, considering the case of cooling, when the solar radiation load is large, the temperature in the double-bed chamber 21 rises and a temperature difference occurs between the slab 2 and the thermal energy stored in the slab 2 is returned to the air. The air conditioner peak load can be reduced because the return air can be cooled by being discharged to the air conditioner. On the contrary, when the solar radiation load is small,
The return air temperature is almost the same as that of the indoor air, no temperature difference occurs, and there is no heat dissipation of the heat storage of the slab 2, so the heat storage is retained.
Therefore, considering mainly the cooling, even if the switching dampers 31 and 35 are omitted and the return air is constantly returned from the double floor chamber 21, the heat radiation is promoted at the peak time.

FIG. 3 shows another embodiment of the building heat storage type air conditioning system of the present invention. FIG. 3 (A) is a schematic sectional view, and FIG. 3 (B) is the double floor of FIG. 3 (A). 3C is a plan view of the chamber, and FIG. 3C is a plan view of the ceiling chamber of FIG. It should be noted that the same configurations as those of the above-described embodiment are denoted by the same reference numerals and the description thereof will be omitted.

In this embodiment, the air conditioner 27 is installed in the ceiling chamber 4, and the partition member 39 is installed in the double floor chamber 21. Further, one of the two pillar-integrated type return ducts 23 has the suction port 23b formed in the upper part and the discharge port 23c formed in the lower part, as in FIG.
The other pillar-integrated return duct 23 has an upper portion connected to the suction side of the air conditioner 27 via a suction duct 32 and a switching damper 35, and has a suction port 23d for retentate air at the lower portion. Further, the suction duct 32 is the switching damper 3
6. It is connected to the ceiling chamber 4 via the chamber suction port 30. The air conditioner 27 may be provided on the window counter 24 side.

The operation of this embodiment having the above configuration will be described. At the time of heat storage operation and heat radiation operation, the switching damper 31 is closed and the switching damper 35 is opened, and cold (warm) air or outside air is blown from the air conditioner 27 into the room R through the air supply duct 29 and the ceiling outlet 25, The air having a relatively high temperature in the room R is supplied to the ceiling slit 3a, the suction port 23b of the one pillar-integrated retum duct 23, the discharge port 23c, the double floor chamber 21, and the suction port 23d of the other pillar-integrated retin duct 23. The air is circulated to the air conditioner 27 through the suction duct 32. At this time, in the double floor chamber 21, the partition air is largely bypassed by the partition member 39,
Heat is stored or radiated in a wide range of the body heat storage unit 36.

During the air conditioning operation in which the stored heat is not radiated, the switching damper 35 is closed and the switching damper 31 is opened to make the air conditioner 2
7, cold (warm) air is blown into the room R through the air supply duct 29 and the ceiling outlet 25, and the air that has conditioned inside the room R is supplied to the ceiling slit 3 a, the ceiling chamber 4, and the chamber suction port 3.
0, it circulates to the air conditioner 27 through the suction duct 32.

[0023]

As is apparent from the above description, according to the present invention, since the double floor is used, the cost can be reduced, and the heat radiation time zone can be controlled, so that the power can be leveled most. Since there is a temperature difference in the time zone that contributes to and the surface air velocity is increased due to the double floor chamber, the amount of heat radiation can be increased.

Further, since the slab becomes the main heat storage body,
Due to the heat insulation effect with the carpet on the double floor and the small volume and surface area in the double floor chamber, the heat radiation loss can be suppressed more than the conventional ceiling chamber system. Further, since the retinal air is passed through the narrow double-bed chamber, the passing wind speed can be increased, and there are many obstacles such as columns of the double-bed, so that a turbulent flow can be obtained and heat exchange efficiency can be improved.

Furthermore, since a large temperature difference occurs during cooling heat radiation, the heat radiation efficiency can be increased, and if the lower surface of the slab is heat-insulated, the heat storage efficiency can be increased. Moreover, since it is not a partial short circuit unlike the conventional ceiling chamber system, it is possible to store heat in a body having a large area.

[Brief description of drawings]

1 shows an embodiment of a building heat storage type air conditioning system of the present invention, FIG. 1 (A) is a schematic sectional view, and FIG. 1 (B) is taken along line BB of FIG. 1 (A). It is sectional drawing seen in the arrow direction.

FIG. 2 is a perspective view of the pillar-integrated return duct of FIG.

3A and 3B show another embodiment of the body heat storage type air conditioning system of the present invention, FIG. 3A is a schematic sectional view, and FIG.
A plan view of the double floor chamber of FIG. 3 (A), FIG. 3 (C),
It is a top view of the ceiling chamber of FIG.

FIG. 4 shows a conventional body heat storage type air conditioning system, and FIG.
Is a schematic cross-sectional view, and FIG. 4B is a cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

1, 2 ... Slab R ... room, W ... window 4 ... Ceiling chamber 20 ... Double floor 21 ... Double floor chamber 22 ... Pillar 23 ... Pillar integrated type return duct 27 ... Air conditioner 29 ... Air supply duct 39 ... Partition member

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-279726 (JP, A) JP-A-5-10554 (JP, A) JP-A-5-157279 (JP, A) JP-A-6- 159730 (JP, A) JP 9-292139 (JP, A) JP 60-78234 (JP, A) Actual opening 3-27530 (JP, U) Actual opening Sho 60-43926 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F24F 3/044 F24F 3/00 F24F 5/00 F24F 3/052

Claims (2)

(57) [Claims] 1. A chamber formed between upper and lower slabs, a ceiling chamber formed in the upper part of the chamber, a double floor formed in the lower part of the chamber, and a double floor formed between the double floor and the slab. A double-floor chamber, a partition member provided in the double-floor chamber, and a pillar-integral type return duct provided on a pair of columns on the window side, and blows the conditioned air by the air conditioner into the room by the air supply duct, It is possible to selectively switch between a route that circulates the indoor air to the air conditioner through one of the return ducts, a double floor chamber, and the other return duct, and a route that circulates the indoor air through the ceiling chamber to the air conditioner. The core heat storage type air-conditioning system. 2. A precursor thermal storage type air-conditioning system according to claim 1, characterized in that a heat insulating material on the lower surface of the slab.