JP2001349577A - Air-conditioning system utilizing building frame heat storage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for device for storing heat at the hollow part of a floor slab that is composed by an inexpensive, hollow slab. SOLUTION: A heat storage air passage is composed by space 4 between beams 3 that are composed in parallel with a floor slab 1, an air conditioner 6 is installed at one end side of the space, at the same time the diffuser of air from the space to the inside of a room and that of air from the inside of a room to the space is composed in a ceiling, the supply side of the air conditioner is selectively connected to the diffuser and the nighttime diffuser into the room via a supply air passage, and at the same time the rethane side of the air conditioner is composed to communication with the space via a rethane opening, a nighttime diffuser 10 is composed to be in a flat shape for emitting air along the wall surface of the floor slab from one end side of the space to the direction of the other end side, and the side width is composed to be approximately half the side width of space and at the same time is deflected in the crosswise direction of the space.

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 using heat storage in 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 that uses heat storage in the concrete slab to store heat (including cold heat) in advance by storing heat in the concrete slab by operating the air conditioner. Has been proposed.

For example, in an air conditioning system described in Japanese Patent Application Laid-Open No. 10-220812, a hollow portion of a floor slab constituted by a hollow slab is formed as an air passage for heat storage (and heat dissipation), and an air conditioning space is provided from an air conditioner. A basic configuration is such that an air passage of the floor slab is arranged at an appropriate position of an air conditioning air passage which is sucked and returned to the air conditioner through the air conditioner.

[0004]

In such an air conditioning system, the hollow portion of the floor slab formed by the hollow slab is configured as a heat storage (and heat radiation) air passage.
Although the heat storage efficiency is high, there are problems in that the initial cost is high and that the arrangement and fitting of the floor slab and the duct system are complicated.

Accordingly, the present inventors have proposed that the heat storage air passage is constituted by a space between beams formed in parallel with the floor slab, and that conditioned air is blown into this space in a direction along the wall surface of the floor slab to thereby provide the floor slab. An air-conditioning system that stores heat first has been proposed earlier. (See, for example, the specification and drawings attached to the applications of Japanese Patent Application Nos. 10-358606 and 11-231855.) In this system, the conditioned air blown out along the wall surface of the floor slab is longer due to the Coanda effect. Since it flows along the wall surface over a distance, sufficient heat exchange occurs with the floor slab at this time, and heat is stored in the floor slab.

[0006] In the air conditioning system to which the skeleton heat storage system utilizing the Coanda effect is applied, the amount of heat storage is also released depending on how efficiently the conditioned air passing through the space constituting the heat storage air passage exchanges heat with the floor slab. The amount of heat is decided. An object of the present invention is to enable efficient heat exchange between conditioned air and a floor slab in an air conditioning system utilizing the Coanda effect as described above.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, there is provided an air path from an air conditioner to an air-conditioned space, the air being sucked from the air-conditioned space to the air conditioner, and recirculated.
In an air conditioning system that arranges a heat storage air passage with a concrete skeleton, the heat storage air passage is composed of a space between beams parallel to the floor slab, and an air conditioner is installed at one end of this space, and indoors are placed on the ceiling from the space. The air outlet to the room and the air outlet from the room to the space, and select the air outlet side of the air conditioner as the air outlet into the room or the night air outlet through the air flow path equipped with the switching mechanism The air-conditioner is configured to communicate with the space through the air outlet, and the night air outlet is provided on the wall surface of the floor slab in the direction from one end to the other end of the space. It has a flat shape that ejects air along it, and its width is at most about half of the width of the space, and it is installed offset in the horizontal direction of the space. air conditioning To propose a stem.

Further, in the present invention, in the above configuration, the air outlet from the room is formed in a flat shape that is long in a direction crossing the space, and the fan blows the room air along the wall surface of the floor slab. It is suggested to arrange it.

Further, according to the present invention, in the above construction, when a part of the floor slab is constituted by a void slab,
It is proposed that an opening is formed at an appropriate position on the space side and a guide plate is provided at the opening on the downstream side of the airflow by the night air outlet.

According to the present invention, the conditioned air jetted from the night air outlet at one end of the space constituting the heat storage air passage toward the other end is biased to one side in the lateral direction of the space, and is caused by the Coanda effect. After flowing along the wall surface of the floor slab, it turns in a U-shape in the lateral direction, and is deflected to the other side of the space, returns to one end side of the space along the wall surface of the floor slab, and is conditioned through the retan port. It is sucked into the machine and refluxed.

As described above, since the conditioned air is jetted while being deviated to one side in the horizontal direction of the space, the collision between the conditioned air in the jetting direction and the conditioned air in the retane direction is suppressed, and the conditioned air reaches the jetting direction. As the distance becomes longer and flows along the wall of the floor slab in the direction of the urethane, the area of the heat transfer surface between the conditioned air and the wall of the floor slab increases, increasing the heat exchange efficiency and increasing the amount of heat storage I do.

When utilizing the heat stored in the floor slab during air conditioning, air from the room is allowed to flow in the above-mentioned space in one direction, and the air from the room is applied to the wall surface over the entire width of the floor slab. By configuring to flow along
Heat exchange efficiency during air conditioning can be improved.

When the floor slab is formed as a void slab, an opening is formed at an appropriate position on the space side, and a guide plate is provided at the opening on the downstream side of the airflow by the night air outlet, so that the conditioned air ejected from the night air outlet is provided. Can be passed through the void, and in this regard, the efficiency of heat exchange with the floor slab can be improved.

As described above, the flow of the conditioned air blown out from the night air outlet is opposite to each other on one side and the other side in the horizontal direction of the space, so that air from the room flows in the space in one direction. In this case, a part of the air flows in the voids of the floor slab by the guide plate, so that the heat exchange efficiency during air conditioning can be improved.

[0015]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 3 are explanatory views conceptually showing a first embodiment of the air conditioning system of the present invention. In these figures, reference numeral 1 denotes a floor slab, and 2 denotes a ceiling panel installed below the floor slab 1. The floor slab 1 constitutes the beams 3 in parallel. Therefore, in the space in the ceiling between the floor slab 1 and the ceiling panel 2, there is an elongated space 4 (4a, 4b,...) Separated by the adjacent beams 3. Are configured in parallel. Note that reference numeral 5 denotes a pillar. A ceiling concealed air conditioner 6 such as a package type air conditioner (PAC) or a fan coil unit (FCU) is installed at one end side in the space 4, and necessary elements accompanying the air conditioner 6 are put in place. Can be installed. The outlet side of the air conditioner 6 is configured to selectively communicate with the ceiling outlet 9 and the night outlet 10 via an outlet air path 8 having a switching mechanism 7. That is, the outlet air path 8 includes a common duct 11c from the outlet side of the air conditioner 6, and ducts 11a and 11b branched therefrom.
The damper 12a, 12b such as a motor damper is installed in each of the ducts 11a, 11b, and the switching mechanism 7 is constituted by these dampers 12a, 12b. The ducts 11a and 11b are connected to a ceiling outlet 9 and a night outlet 10, respectively. On the other hand, the urethane side of the air conditioner 6 is configured to communicate with the space 4 via the urethane port 13.

The night air outlet 10 is formed in a flat shape in which air is blown out along the wall surface of the floor slab 1 from one end of the space 4 to the other end thereof. The space 4 is configured to be about half the width, and is disposed so as to be deviated in the lateral direction of the space 4.

Next, as shown in FIG. 3, in this embodiment, an air barrier is installed on the perimeter of the living room space 14, and an air barrier suction fan 16 is provided on the ceiling side. The air barrier suction fan 16 is provided in the space 4.
The outlet 17 is formed in a long flat shape having a width approximately equal to the width of the space 4 and air is blown out along the wall surface of the floor slab 1 toward the other end of the space. It is arranged to be.

In the above configuration, during nighttime when the air-conditioning operation is not performed, as shown in FIGS.
Is closed and the damper 12b is opened to operate the air conditioner 6. The conditioned air from the discharge side of the air conditioner 6 reaches the night air outlet 10 via the duct 11b, and blows out into the space 4 in the direction along the wall surface of the floor slab 1.

As described above, the conditioned air blown out from the night air outlet 10 on one end side of the space 4 toward the other end side is deviated to one side in the lateral direction of the space 4, in this case, leftward in the jetting direction. After flowing along the wall surface of the floor slab 1 due to the Coanda effect, it turns laterally in a U-shape, and is biased toward the other side of the space 4 so that one end of the space 4 along the wall surface of the floor slab 1 Then, the air is sucked into the air conditioner 6 through the outlet 13 and is returned.

The air-conditioned air blown out from the night air outlet 10 flows along the wall surface over a long distance due to the Coanda effect. At this time, heat exchange with the floor slab 1 is performed well, and the space is also removed. 4 so that the air-conditioning air in the jetting direction and the air-conditioning air in the direction of the air are prevented from colliding with each other. Since the air flows along the wall surface of the floor slab 1, the area of the heat transfer surface between the conditioned air and the wall surface of the floor slab 1 increases, the heat exchange efficiency increases, and the heat storage amount increases.

The wind speed of the air blown out from the night air outlet 10 can be appropriately adjusted. For example, it is set to about twice the wind speed blown out into the living room space 14 through the ceiling air outlet 9 during air conditioning, and the reaching distance in the jetting direction. Can be lengthened.

Next, during the air conditioning period, as shown in FIG. 3, the damper 12a is opened, the damper 12b is closed, and the air conditioner 6 is closed.
To drive. The conditioned air from the discharge side of the air conditioner 6 reaches the ceiling outlet 9 via the duct 11a, from which the room space 1
4 and is supplied to the room for air conditioning. Then, the air supplied to the air conditioner is provided as an air barrier, then is sucked from a ceiling inlet 17 by an air barrier suction fan 16, and is ejected from the outlet 17 toward one end of the space 4.
The air blown out from the outlet 17 flows over the entire width of the space 4 and thus flows along the wall surface due to the Coanda effect over the entire width of the floor slab 1, and flows to the air conditioner 6 via the retan port 13 at one end of the space 4. Aspirated and refluxed.

As described above, the air supplied for air conditioning of the living room space 14 flows through the space 4 along the wall surface of the floor slab 1, whereby good heat exchange with the floor slab 1 is performed. Since the heat stored up to that point is recovered and returned to the air conditioner 6 in this state, the load on the air conditioner 6 is reduced, and thus the stored heat can be effectively used during the air conditioning period.

In this embodiment, the air from the room is
Although the space 4 is made to flow in one direction, the air from the room flows along the wall surface over the entire width of the floor slab 1, so that the heat exchange efficiency is greatly improved. I have.

Although the air barrier 15 is installed in the first embodiment described above, the present invention can of course be applied to a case where the air barrier 15 is not installed. The air is sucked into the air-conditioner 6 on the urethane side, and flows into the space 4 from the ceiling suction port 18.

When the air barrier 15 is installed, the indoor air is increased in wind speed by the air barrier suction fan 16 and comes into contact with the wall surface of the floor slab 1, so that the heat exchange efficiency is increased. In this case, since the high-temperature air in the perimeter exchanges heat with the floor slab 1, the heat exchange efficiency also improves in this regard. That is, when the air barrier is installed, the heat exchange efficiency is improved by increasing the temperature difference between the floor slab 1 and the air for heat exchange and increasing the wind speed.

FIGS. 4 and 5 show a second embodiment of the present invention. This second embodiment is different from the first embodiment in the structure of the floor slab 1. Since the other configuration is the same as that of the first embodiment, the same components are denoted by the same reference numerals, and redundant description will be omitted.
In this embodiment, as shown in FIG. 5, the floor slab 1 is configured as a void slab 19 on the lower side, that is, the space 4 side. In the void slab 19, an opening 20 is formed at an appropriate position on the space 4 side, and a guide plate 21 is provided in the opening 20 on the downstream side of the airflow by the night air outlet 10.

In this configuration, a part of the conditioned air blown out from the night air outlet 10 can be guided to the guide plate 21 on the downstream side of the opening 20 and can pass through the void 22. Heat exchange efficiency can be improved.

As described above, the flow of the conditioned air blown out from the night air outlet 10 is opposite to each other on one side and the other side of the space 4 in the horizontal direction. When the air is caused to flow in one direction from the outlet, a part of the air is guided by a part of the guide plate 21, that is, the upper guide plate 21 in FIG. The flow, and thus the heat exchange efficiency during air conditioning, can also be improved in this regard.

The direction of the void 22 with respect to the flow direction of the conditioned air is appropriate, and may be a direction orthogonal to the direction shown in FIG.

[0031]

As described above, the present invention has the following effects. a. The building thermal storage air conditioning system can be configured at low initial cost. b. The arrangement and fitting of the floor slab and the duct system are simplified. c. An existing building having parallel beams can constitute a skeleton thermal storage air conditioning system. d. The conditioned air is biased to one side in the lateral direction of the space and is ejected, so that the collision between the conditioned air in the ejection direction and the conditioned air in the retane direction is suppressed, and the reach of the conditioned air in the ejection direction is increased, Since it also flows along the wall surface of the floor slab in the urethane direction, the area of the heat transfer surface between the conditioned air and the wall surface of the floor slab increases, the heat exchange efficiency increases, and the heat storage amount increases. At this time, the heat exchange efficiency can be further improved by increasing the wind speed of the conditioned air. e. When using the heat stored in the floor slab during air conditioning, the air from the room should flow in the space in one direction opposite to the direction of the heat storage, so that the air from the room is the entire width of the floor slab. , The heat exchange efficiency during air conditioning can be improved. At this time, when an air barrier is provided, the air velocity can be increased by using the suction fan for blowing air to the floor slab, thereby further improving the thermal efficiency. In addition, when the air barrier is installed in this way, in the cooling period, the higher-temperature air of the perimeter exchanges heat with the floor slab, so that the heat exchange efficiency can be further improved. f. When the floor slab is configured as a void slab, an opening is formed at an appropriate position on the space side, and a guide plate is provided at the opening on the downstream side of the airflow by the night air outlet, so that a part of the conditioned air ejected from the night air outlet. Can be passed through the void, and in this regard, the efficiency of heat exchange with the floor slab can be improved. g. Since the flow of the conditioned air blown out from the night air outlets is opposite to each other on one side and the other side in the lateral direction of the space, when air from the room is caused to flow in the above-mentioned space in one direction, the flow of the air Part of the air flows through the voids of the floor slab due to the guide plate, and in this respect, the heat exchange efficiency during air conditioning can also be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view conceptually showing a configuration of a main part of a first embodiment of an air conditioning system of the present invention in a heat storage operation state.

FIG. 2 is a longitudinal sectional view conceptually showing a configuration of a main part of the first embodiment of the air conditioning system of the present invention in a heat storage operation state.

FIG. 3 is a longitudinal sectional view conceptually showing the overall configuration of the first embodiment of the air conditioning system of the present invention in an air conditioning operation state.

FIG. 4 is a cross-sectional view conceptually showing a configuration of a main part of a second embodiment of the air conditioning system of the present invention in a heat storage operation state.

FIG. 5 is an enlarged sectional view showing a part of an air conditioning system according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor slab 2 Ceiling panel 3 Beam 4 Space 5 Column 6 Air conditioner (ceiling concealed air conditioner) 7 Switching mechanism 8 Outlet air path 9 Ceiling outlet 10 Night outlet 11a, 11b, 11c Duct 12a, 12b Damper 13 Retin opening 14 Living room space 15 Air barrier 16 Air barrier suction fan 17 Blow-out port 18 Ceiling suction port 19 Void slab 20 Opening 21 Guide plate 22 Void

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kenichi Hamada 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Taisei Corporation F-term (reference) 2E001 DB02 DD17 EA01 FA11 FA15 FA24 NA01 NA05 ND05

Claims (3)

[Claims] 1. An air conditioning system in which a heat storage air passage made of a concrete body is disposed at an appropriate position in an air path from an air conditioner to an air conditioning space, from which the air is sucked into the air conditioner and which flows back, the heat storage air passage is formed in a floor slab. It is constituted by a space between beams configured in parallel, an air conditioner is installed at one end side of this space, and an air outlet for air from the space to the room and an air outlet for air from the room to the space are formed on the ceiling, The outlet side of the air conditioner is configured to selectively communicate with the outlet to the room and the night outlet through an outlet air path provided with a switching mechanism, and the retan side of the air conditioner is provided via a retan port. The above-mentioned space is configured to communicate with the space, and the night air outlet is formed in a flat shape in which air is blown out along the wall surface of the floor slab in a direction from one end side of the space to the other end side. About half the width of An air conditioning system that uses heat storage in the building, characterized in that it is configured as a degree and is installed offset in the horizontal direction of the space. 2. An air outlet for air from a room is formed in a flat shape that is long in a direction crossing the space, and is arranged so as to blow air from the room along a wall surface of the floor slab by a fan. An air-conditioning system using frame heat storage according to claim 1. 3. When the floor slab is partially constituted by a void slab, an opening is formed at an appropriate position on the space side, and a guide plate is provided at the opening on the downstream side of the airflow by the night air outlet. An air conditioning system using the heat storage of the skeleton according to claim 1 or 2.