JP2000111097A - Air conditioning system utilizing heat stored in building structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To minimize the piping to an outdoor unit by providing a room for containing an air conditioner on the outer wall side and installing a conduction duct and a conditioned air blowing duct to each room on the outer wall side thereby enabling individual air conditioning. SOLUTION: Air conditioning machine rooms 22 are provided at four corners of a tenant building and a conduction duct 13 is installed on the outer wall side from each air conditioner 1 in each air conditioning machine room 22 to the room 7 of each tenant. On the other hand, an exhaust duct 24 is installed from each air conditioning machine room 22 to the room 7 of each tenant on the outer wall side. Furthermore, a conditioned air blowing duct 25 is installed from each air conditioner 1 in each air conditioning machine room 22 to the room 7 of each tenant. Conditioned air is circulated between the air conditioner 1 and the hollow section 12 of floor slab 4, i.e., the load at the time of heat storage, through the conduction duct 13 and the exhaust duct 24 thus storing heat in the floor slab 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-conditioning system such as a floor blow-out type utilizing heat storage of a building.

[0002]

2. Description of the Related Art Recently, an air conditioner is required to improve the indoor environment immediately after the start of the air conditioner, or to reduce the capacity of a heat source and an air conditioner due to a peak cut of an air conditioning load. An air-conditioning system has been proposed that uses a heat storage system to store heat (including cold heat) in the concrete slab skeleton in advance by storing heat in an air conditioner and using this heat when air conditioning is required. ing.
For example, see the specification and the drawings attached to the application such as Japanese Patent Application No. 9-27131.

In this air conditioning system, a closed space constituted by a building structure, for example, a hollow portion of a floor slab constituted by a floor slab is constituted as an air passage for storing and radiating heat. The basic configuration is such that an air passage of the floor slab is disposed at an appropriate position of an air-conditioned air passage that returns to an air conditioner through the air passage.

[0004] An example of such an air conditioning system will be described. For example, in the system shown in FIG. 9, air-conditioning air discharged from a discharge side 2 of an air conditioner 1 is supplied to a double floor 3 such as an OA floor and a floor slab 4. The air flows into the underfloor space 5 formed between the floors, and is supplied to the room space 7 of the room from the outlet 6 provided on the floor 3, and the ceiling panel 8 and the floor on the ceiling side are supplied from the suction port 9 provided on the ceiling panel 8 In a floor-blowing type air-conditioning system in which the air flows into a ceiling space 10 between the slab 4 and the air flows through the space 10 and flows back to the suction side 11 of the air conditioner 1, the floor slab 4 is constituted by a floor slab having a hollow portion 12. The hollow portion 12 forms a heat storage air passage for heat storage and heat radiation, and the conditioned air flows through the heat storage air passage as needed. A large number of parallel hollow portions 12 are connected to each other at the right end side in the drawing to form a serial path, thereby forming an air inlet / outlet at both ends of the heat storage air passage at one end of the floor slab 4. That is, it is arranged on the left end side in the figure. That is, in order to supply the conditioned air from the discharge side 2 of the air conditioner 1 to the heat storage air passage, a communication duct 13 is arranged below the floor slab 4 of the ceiling interior space 10 in a direction perpendicular to the hollow portion 12. A branch duct 14 is provided at one end of each series path from the communication duct 13. On the other hand, the other end of the series path is communicated with the space 10 in the ceiling by the opening 15.

In such a configuration, the air conditioner 1 is operated only for a necessary time outside the time when air conditioning is necessary, particularly at night when the unit price of the electricity rate is low, and the conditioned air is mainly circulated through the heat storage air passage to circulate. By performing the heat storage operation, heat (including cold heat) generated by the operation of the air conditioner 1 is stored in the floor slab 4 constituting the hollow portion 12. During air conditioning, the air stored in the floor slab 4 is recovered by the conditioned air by performing an operation of flowing the conditioned air flowing in the living room space 7 to the heat storage air passage upstream or downstream thereof. 7 can be used for air conditioning. For example, the heat storage operation is performed during 10 hours from 10 o'clock in the evening to 8 o'clock in the next morning, and the heat is stored in the floor slab 4 and is radiated and used in the daytime. In the figure, solid and broken arrows indicate the flow of air-conditioned air during the heat storage operation, and the dashed-dotted arrows indicate the flow of air-conditioned air during the air-conditioning operation. A configuration in which a path that flows only to the space 10 in the ceiling and returns to the suction side 11 of the air conditioner 1 and a path that flows from the space 10 in the ceiling to the heat storage air passage and returns to the suction side 11 of the air conditioner 1 can be selected. A duct arrangement, a switching mechanism, and the like for performing such an operation are appropriately configured. Although the above example is a floor blowing method, it is needless to say that the present invention can be applied to a ceiling blowing method.

Conventionally, in a tenant building, it has been difficult to air-condition a plurality of small rooms (tenants) using a common air conditioner. This is because it is difficult to measure the air flow rate corresponding to the usage of the air conditioner when the air conditioning day and time zone are different for each tenant. When AHU is applied,
A method of installing an air flow meter in the middle of a duct to measure the air flow is conceivable, but this method requires that a straight duct section of 3 to 5 m be provided before and after the air flow meter, which is practically difficult. is there. Therefore, conventionally, it is common to install an air conditioner for each tenant, and the same applies to the case where the above-described air conditioning system using frame heat storage is applied.

FIGS. 10 and 11 show an example of a tenant building in which an air conditioner is installed for each tenant. FIG. 10 is a plan view of a reference floor, and FIG. 11 is a sectional view taken along line aa of FIG. is there. As shown in the figure, this tenant building is provided with a core 20 on the center side and 12 tenants (rooms) 7 on three sides thereof. Corridor 2 for each tenant's room 7
An air conditioner room 22 is installed on one side.

[0008]

Therefore, there are the following problems. a. The entrance and exit are restricted by the air-conditioning machine room installed for each tenant. b. It is necessary to pass a duct for taking in outside air inside the core ceiling, and in the case of RC construction, it will pass under the beam,
Affects ceiling height in corridors. c. If the smoke of each subdivided room is smoked by mechanical smoke,
As shown in FIG. 11, since the smoke exhaust duct 23 intersects with the communication duct, it becomes a descending ceiling. An object of the present invention is to solve the above problems.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a plurality of parallel air-conditioning air paths are provided from an air conditioner to each room which is an air-conditioning space, and return to the air conditioner from the air-conditioning space. Place a floor slab with a hollow part,
In the skeleton thermal storage air conditioning system, the adjacent hollow portion communicates with one end of the floor slab to form a series path, and the other end of the floor slab forms a communication duct that communicates with one end of each series path. The present invention proposes an air conditioning system using heat storage of a building in which an air conditioning machine room for storing an air conditioner is provided on the outer wall side of a building, and the communication duct and the air-conditioning air blowing duct are arranged on each outer wall side to each room.

According to the present invention, in the above configuration, each of the ducts comprises a main duct common to a plurality of rooms and a sub duct for each room, and a damper is provided between each sub duct and the main duct. It proposes an air conditioning system that uses the heat storage of the skeleton.

Further, the present invention proposes a configuration in which, in the above configuration, an exhaust duct for discharging heat from the perimeter portion is connected to the air-conditioned air path via a communication selection mechanism.

According to the present invention, an air-conditioning system using a frame heat storage system, in which a floor slab having a hollow portion is used as a heat storage unit, is connected to an air-conditioning machine which is a main component thereof, a communication duct, and a duct for air-conditioning air blowing. Is provided on the outer wall side of the building, and can be configured for each room, so that individual air conditioning is possible.

[0013]

Next, an embodiment of the present invention will be described with reference to the drawings. FIGS. 1 to 7 show a first embodiment of the present invention, and the same reference numerals are given to the same components as those of the above-described conventional one. 1 is a plan view of a reference floor of a tenant building, FIG. 2 is a sectional view taken along line AA of FIG. 1, FIG. 3 is a top view of line II in FIG. 2, and FIG. 5 is an enlarged cross-sectional view taken along line XX of FIG. First, as shown in FIG. 1, in this tenant building, the arrangement of the core 20 and each tenant (room) 7 is the same as that shown in FIG. In this tenant building, tenants 1 to
Regarding 5, 8 to 12, a large number of hollow portions 12 of the floor slab 4 are arranged in the vertical direction in the figure, and thus the direction of the air flowing through the hollow portions 12 of the floor slab 4 becomes the horizontal direction in the figure. , Tenants 6 and 7 are arranged side by side in the left-right direction in the figure, and therefore, the direction of the air flowing through these hollow portions 12 is the vertical direction in the figure.

However, in this tenant building, the air-conditioning machine rooms 22 are installed at four corners. Air conditioning machine room 2 in the upper left of the figure
2 is an air conditioner 1 for tenants 1 to 3 (numbers corresponding to the respective tenants are written in parentheses after the reference numerals. Similarly, parentheses are displayed for ducts as necessary).
Is installed in the air conditioning machine room 22 at the lower left.
Air conditioners 1 are installed. Although not shown, similarly to the left side, the air conditioner room 22 at the lower right is provided with the air conditioner 1 for the tenants' rooms 7 to 9 and the air conditioner room 22 at the upper right.
, The air conditioners 1 for tenants 10 to 12 are installed.
Each communication duct 13 is disposed on the outer wall side from each air conditioner 1 installed in each air conditioning machine room 22 to each tenant's room 77. On the other hand, on the outer wall side, each air conditioning machine room 22
To the room 7 of each tenant, respective exhaust ducts 24 are provided. Although not shown in FIG. 1,
As shown in FIG. 2, each conditioned air blowing duct 25 is arranged from each air conditioner 1 in each air conditioning machine room 22 to each tenant's room 7.

As described above, FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1. Therefore, FIG. 2 shows a cross-section of a part of the room 7 of the tenant 2. As shown in FIG. The duct 13 (2) and the exhaust duct 24 (2) are connected to the ceiling 8
Are communicated via a communication path 26 formed in the space 10 in the ceiling. The perimeter also has a fan 2
7 is installed, and a counter 28 having an outlet at the top is installed, and a suction port 29 is provided at the ceiling side on the upper side, and the suction port 29 and the exhaust duct 24 (2) also communicate with each other. 30. And these communication routes 2
A communication selection mechanism 31 is provided between the exhaust ducts 24 and 30 and the exhaust duct 24 (2). The communication selection mechanism 31 includes a partition 32
And on-off valves 33 and 34 on the respective communication paths 26 and 30 side and their driving devices 35. As shown in FIG. 4, when the on-off valve 34 is closed and the on-off valve 33 is rotated to open as shown by the broken line, the exhaust duct 24 is closed.
(2) is a state of communication with the communication path 26 with the communication duct 13 (2). On the contrary, the on-off valve 33 is rotated in the direction opposite to the dashed arrow and is closed, and the on-off valve 34 is When rotated in the direction of the two-dot chain line to be in the open state, the exhaust duct 24 (2) is in communication with the communication path 30 on the suction port 29 side.

The state of FIGS. 2 to 5 described above shows the state during the heat storage operation at night, and the air conditioner 1 (2) for the room 7 of the tenant 2 installed in the air conditioner room 22 2) reaches the room 7 of the tenant 2 through the communication duct 13 (2) and flows into the hollow portion 12 of the floor slab 4 through the communication port 36 as shown by the solid line arrow in FIG. And
After flowing through the above-described serial path, as shown by the broken line in FIG. 2, the air flows from the inside of the hollow portion 12 to the space 10 in the ceiling via the opening 15 and passes through the communication path 26 from the opening 37 to the communication selection mechanism 3.
1 and flows into the exhaust duct 24 (2). As described above, at this time, since the on-off valve 34 is in the closed state, it does not flow in the direction of the suction port 29. Thus, the exhaust duct 24 (2)
The conditioned air flowing into the air conditioner flows through the exhaust duct 24 (2), reaches the air conditioner room 22, and is returned to the suction side of the air conditioner 1 (2) for circulation. In this manner, the conditioned air flows between the air conditioner 1 (2) and the hollow portion 12 of the floor slab 4 which is a load at the time of heat storage, through the communication duct 13 (2) and the exhaust duct 2 (2).
4 (2), and heat is stored in the floor slab 4 in this way.

FIGS. 6 and 7 show states during the air-conditioning operation in the daytime.
1 is a state in which the on-off valve 34 is in an open state, contrary to the case of FIGS.
The on-off valve 33 is driven by a driving device to be in a closed state. In this state, the exhaust duct 24 (2) is in communication with the communication path 30 on the suction port 29 side. In this state, the conditioned air of the air conditioner 1 (2) is supplied to the underfloor space 5 via the conditioned air blow-off duct 25 (2) for the tenant 2, in this case, the floor blow-off air-conditioning duct.
After blowing out from the floor into the room 7 of the tenant 2 and being subjected to air conditioning in the room 7, the air enters the space 10 in the ceiling from the suction port 9 provided in the ceiling panel 8, and then, contrary to the heat storage operation, the opening 1
5, after entering the hollow portion 12 of the floor slab 4 and flowing through the serial path, enters the communication duct 13 (2) through the communication port 36, and then connects the communication duct 13 (2) in reverse to FIG. 3. The air flows in the direction of the air conditioner room 22, and the air conditioner 1
It is returned to the suction side of (2) and provided for circulation. Thus,
The heat stored in the floor slab 4 during the heat storage operation can be used for the air conditioning operation. On the other hand, during the air-conditioning operation, the fan 2 is used to remove heat entering the perimeter from the outside.
7, the indoor air blows upward from the upper portion of the counter 28 to take away the heat that has entered from the windows and the like, and
From 9, the air is sucked into the exhaust duct 24 (2) through the communication path 34 and the communication selection mechanism 31. The sucked air reaches the air conditioning machine room 22 via the exhaust duct 24 (2), and is discharged to the outside air by a predetermined exhaust means, and a part of the air is joined to the suction side of the air conditioner 1 (2) and circulated. To be served.

As described above, in the first embodiment, a dedicated air conditioner 1 and ducts 13 and 2 are provided for each tenant.
4 and 25 allow independent air conditioning.

Next, FIG. 8 shows a second embodiment of the present invention. In this embodiment, in the same arrangement of cores and rooms as in FIG. 1, each room corresponds to a different tenant. This is not the case, for example, when it is used as a company building. That is, in the company building, each room 1 ~
At the time of air-conditioning of 12, it is not necessary to measure the air-conditioning cost such as the electricity cost for each room, so the following configuration can be adopted. That is, in this embodiment, the air conditioner 1
Is a common air conditioner or a plurality of air conditioners. In the first embodiment, the communication duct 13 and the conditioned air blowing duct 25 provided for each room are provided with a common main duct 38 and each room 7. Each of the sub ducts 39 (1 to 12) is provided with a damper 40 (1 to 12) between each sub duct 39 (1 to 12) and the main duct 38. Also, the exhaust duct 24 can be configured as a common duct without being provided for each room 7. In such a configuration, the heat storage operation and the air conditioning operation can be independently performed for each room by opening and closing the dampers 40 (1 to 12). In this embodiment, the number of air conditioners 1 can be minimized, and the area of the air conditioner room can be reduced.

[0020]

As described above, the present invention provides an air-conditioning system utilizing a heat storage of a skeleton in which a floor slab having a hollow portion is used as a heat storage section. And the communication duct and the air-conditioning air blowing duct can be provided on the outer wall side of the building, and have the following effects in addition to the effect that individual air-conditioning becomes possible. a. If the space of the building is a tenant building that supports small splits,
Conventionally, when an air conditioner is provided for each tenant, the entrance is restricted, but in the present invention, the entrance can be freely set. b. Since the air conditioner is installed on the outer wall side, air intake and exhaust can be performed directly. c. By providing the outdoor unit in the air-conditioning machine room, the piping to the outdoor unit can be minimized. d. Since the communication duct is on the outer wall side, the mechanical smoke exhaust duct can be passed without restriction. e. The floor air-conditioning duct can be installed without passing under the floor of another room. f. When the space of the building is subdivided by the company building, the number of air conditioners can be minimized, so that the machine room area can be reduced and the rentable ratio can be increased. g. The air-conditioning air path at the time of heat storage can be configured using the exhaust duct of the perimeter, and in this case, the number of components can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view of a reference floor of a tenant building, showing a first embodiment of an air conditioning system of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a top view taken along line II in FIG. 2;

FIG. 4 is an enlarged view of a part of FIG. 2;

FIG. 5 is a sectional view taken along line XX of FIG. 4;

FIG. 6 shows an operation state different from that of FIG.
FIG. 3 is a sectional view taken along line A.

7 shows an operation state different from that of FIG. 3; FIG.
FIG.

FIG. 8 is a plan view of a reference floor of a tenant building, showing a second embodiment of the air conditioning system of the present invention.

FIG. 9 is a perspective view showing an example of an air conditioning system using heat storage of a building body.

FIG. 10 is a plan view showing an example of a conventional tenant building in which an air conditioner is installed for each tenant.

FIG. 11 is a sectional view taken along line aa of FIG.

[Explanation of symbols]

Reference Signs List 1 air conditioner 2 discharge side 3 double floor 4 skeleton (concrete slab skeleton) 5 underfloor space 6 outlet 7 living room space 8 ceiling panel 9 suction port 10 ceiling space 11 suction side 12 hollow section 13 communication duct 14 branch duct 15 Opening 20 Core 21 Corridor 22 Air-conditioner room 23 Smoke exhaust duct 24 Exhaust duct 25 Air-conditioning air outlet duct 26 Communication path 27 Fan 28 Counter 29 Suction port 30 Communication path 31 Communication selection mechanism 32 Partition 33 Open / close valve 34 Open / close valve 35 Driving device 36 Communication port 37 Opening

Claims (3)

[Claims] 1. A floor slab having a large number of parallel hollow portions is disposed at an appropriate place in an air-conditioned air path from an air conditioner to an air-conditioned space and returned from the air-conditioned space to the air conditioner, and an adjacent hollow portion is connected to one end of the floor slab. In the frame heat storage air-conditioning system, which forms a communication path on the other side of the floor slab portion and forms a communication duct communicating with one end of each of the series paths, the air-conditioning machine room for storing the air conditioner is formed. An air-conditioning system using heat storage in a building, wherein the air-conditioning system is provided on the outer wall side of the building, and the communication duct and the air-conditioning air blowing duct are provided on each outer wall side to each room. 2. Each of the ducts comprises a main duct common to a plurality of rooms and a sub duct for each room, and a damper is provided between each sub duct and the main duct. Air-conditioning system using heat storage 3. The structure according to claim 1, wherein an exhaust duct for discharging heat from the perimeter portion is configured to communicate with the air-conditioning air path via a communication selecting mechanism. Air conditioning system