JP3256032B2 - Underfloor air conditioning - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underfloor air conditioner, and more particularly to an underfloor air conditioner which contributes to efficient use of space and energy saving in office buildings having office automation equipment.

[0002]

2. Description of the Related Art In recent years, a double-floor structure using floor panels has been adopted on floors of office buildings and the like so as to be suitable for wiring processing of office equipment (OA equipment). Underfloor air conditioning uses this double-floor underfloor space as an air conditioning air duct in addition to wiring processing, and provides air outlets at multiple arbitrary locations on the floor panel to blow air-conditioned air into the room.
The room is air-conditioned.

Conventional under-floor air conditioning will be described with reference to FIG. FIG. 5 is a longitudinal sectional view showing an example of a room employing the conventional underfloor air-conditioning. In FIG. 5, 1 is a system floor on which floor panels are spread, 2 is a floor slab serving as a foundation floor such as a reinforced concrete floor, and A is
An underfloor space formed between the floor slab 2 and the system floor 1, 4 denotes a plurality of floor outlets provided on the system floor 1, 5 denotes a ceiling, 6 denotes a ceiling inlet, and B denotes the inside of the ceiling. .

[0004] Reference numeral 3 denotes an air conditioner for indoor air conditioning, which sucks air in the ceiling B and sends the conditioned air from the lower part of the main body to the space A under the floor. The conditioned air is blown out from the floor surface outlet 4 to the living space C, and after air-conditioning the room, returns to the air conditioner from the ceiling suction port 6 to the inside of the ceiling B and circulates thereafter.
In the figure, arrows indicate the flow of air. Reference numeral 7 denotes a window, and 12 denotes a fan coil unit installed near the window.

[0005]

When looking inside a room, for example, inside an office, as shown in FIG.
There is a window side portion (hereinafter referred to as a perimeter portion) D having a window 7 and both sides have an imbalance in heat load due to the influence of the outside air and sunlight, heat generation of the OA equipment, and the like. This is the issue of air conditioning.

At present, a solution often seen is a method of installing a fan coil unit 12 using a cold / hot water heat source independent of underfloor air-conditioning in the perimeter section D to deal with the influence of outside air. That is, two types of air-conditioning means of the floor surface outlet 4 and the fan coil unit 12, that is, an air-conditioning terminal are used for air-conditioning the same office. However, there is a problem that the effective use of the perimeter is impaired and the appearance and appearance of the perimeter section D are not good.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is possible to avoid installing a plurality of types of air conditioning means in the same room, save energy, and
It is an object of the present invention to provide an underfloor air conditioner that requires less work, less maintenance, and requires less space. Another object of the present invention is to freely select the air in the window side in the normal or reverse direction, so that the air conditioning in the living room can be used optimally regardless of the orientation of the building, and the under-floor contributes to energy saving and a comfortable office. An object of the present invention is to provide a blow-out air conditioner.

[0008]

According to a first aspect of the present invention, there is provided an underfloor air-conditioning apparatus according to the present invention, wherein an underfloor space of an indoor floor to be air-conditioned is used as an air-conditioning air blowing duct. In the underfloor air conditioner using a plurality of floor surface outlets on the floor, a partition is provided in a space corresponding to a boundary between a window side portion and a living portion of the underfloor space, and the partition has a blowing direction. Is provided, and a grill for blowing or sucking forward / reverse wind of the blower is provided on the floor at the side of the window.

In order to achieve the above object, according to a second aspect of the present invention, there is provided an underfloor air-conditioning apparatus according to the present invention, wherein an underfloor space of a floor in a room to be air-conditioned is used as an air-conditioning air blowing duct. In the underfloor air-conditioning apparatus having a plurality of floor surface outlets provided thereon, in the underfloor space, in a space corresponding to a boundary between a window side and a living space, a blower for reversing a blowing direction is located, A grill that blows or sucks forward and backward winds of a blower is positioned on a floor at a window side, and the blower and the grill are integrally connected in the wind tunnel at the above-described positions.

It should be noted that the present invention focuses on more effective use of the double-floor underfloor space as described below, and does not use a fan coil unit. In other words, the double floor is extended from the living area to the window side,
The air-conditioning duct in the underfloor space is divided into two parts at the boundary between the living part and the perimeter part by the underfloor partition plate. The living room floor is provided with a conventional floor surface outlet, the perimeter unit floor is provided with a perimeter-dedicated grill that also serves as a blow-in / suction, and the under-floor partition plate is provided with a blower whose blowing direction is variable.

[0011] It is also an effective measure to contribute to simplifying the construction, by uniting the grill dedicated to the perimeter and the blower whose blowing direction is variable in the forward / reverse direction in the wind tunnel.

[0012]

The function of the above technical means is as follows. In the case of forward air blowing by a blower attached to the underfloor partition plate, the air-conditioned air under the floor of the living room is sent to the underfloor space of the perimeter section, and is blown out from the grill dedicated to the perimeter to air-condition the perimeter section. Further, when the blower is blown in the reverse direction, the air in the perimeter section is sucked in from the grill dedicated to the perimeter, is sent into the underfloor space of the living section, mixes with the air-conditioned air, and flows from the floor floor outlet to the living section. Blow out.

According to the present invention, the air-conditioned air in the underfloor space is blown out to the perimeter section or the air in the perimeter section is sucked into the underfloor space by the above operation, so that the fan coil unit is not installed. The perimeter can be air-conditioned freely. For example, in the case where the perimeter unit needs to be cooled similarly to the living unit, if the blower is blown in the forward direction, the cooling air in the space below the living unit floor is blown out from the grill dedicated to the perimeter, and the perimeter unit can be easily air-conditioned.

[0014] Further, in winter or the like when the perimeter section is hot and the living section needs to be heated, warm air from the perimeter section is sucked into the underfloor space by making the blower blow in the reverse direction.
The heat of the perimeter can be eliminated, and the sucked warm air mixes with the conditioned air in the underfloor space of the living room and is blown out from the floor surface outlet to the living space, thereby contributing to the energy saving effect by utilizing the warm air.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. [Embodiment 1] An embodiment of the first invention will be described with reference to FIGS. FIG. 1 is a longitudinal sectional view of a room employing underfloor air-conditioning according to one embodiment of the present invention, FIG. 2 is an enlarged sectional view of a main portion showing a floor near a window in FIG. 1, and FIG. It is explanatory drawing which shows the air-conditioning effect of a room. In these figures, FIG.
Those having the same reference numerals as those in FIG. 1 indicate the same parts as those of the prior art described above. Arrows in the figure indicate the flow of air during air conditioning.

In FIGS. 1 and 2, reference numeral 8 denotes an underfloor partition plate for partitioning the underfloor space A. The underfloor partition plate 8 is located in the underfloor space A at a position corresponding to the boundary between the perimeter section D and the living section C. . Reference numeral 9 denotes a forward / backward variable blower attached to the underfloor partition plate 8, and reference numeral 10 denotes a perimeter dedicated grill provided on the floor of the perimeter section D. This is a slit-shaped grill that can both blow and suck forward and backward winds.

In a room to be air-conditioned as shown in FIG. 1, for example, an office room, a system floor 1 is laid at a predetermined height on a floor slab 2 by supporting legs (not shown).
An underfloor space A is formed between the apparatus and the system floor 1. Reference numeral 3 denotes an air conditioner for indoor air conditioning, which sucks air in the ceiling B and sends air conditioned to the underfloor space A from the lower part of the main body.

A plurality of floor surface outlets 4 are provided on the system floor 1, and the air-conditioned air blown into the underfloor space A is blown out to the living space C for air conditioning. The air blown out to the living space C is sucked into the ceiling B through a slit-shaped ceiling suction port 6 provided on the ceiling 5 and forms a circulation system returning to the air conditioner 3.

On the other hand, in the room, there is a window 7 together with the living space C, and a window side, that is, a perimeter D, which is affected by the outside air and sunlight. Thus, a space corresponding to the boundary between the above and the underfloor space A is partitioned by the underfloor partition plate 8, and an opening communicating with the underfloor space A is provided in the underfloor partition plate 8. A variable blower 9 is provided. Also, the floor panel 1 of the perimeter section D
a is provided with a grill 10 dedicated to a perimeter which is also used for blowing and suctioning.

An example of the air conditioning operation in this embodiment will be described with reference to FIGS. In the enlarged view of the main part shown in FIG. 2, the solid line arrow indicates the flow of air when blowing in the forward direction of the variable direction blower 9, and the broken line arrow indicates the direction of air flow when blowing in the reverse direction. FIG. 3A shows the flow of air when the perimeter and the living part are under the same air conditioning condition, and FIG. 3B shows the flow of air when the air in the perimeter is used for air conditioning of the living part.

For example, when the perimeter section D needs cooling like the living section C, the operation shown in FIG. 3A is performed. In other words, if the blower variable in forward / reverse direction is set to blow in the forward direction, the cooling air in the underfloor space A of the living space C is blown out by the perimeter-dedicated grill 10 so that the perimeter D can be air-conditioned. Further, the perimeter section D needs cooling, and the living section C
Performs the operation shown in FIG. 3B when heating is required. That is, by making the blower direction variable forward / reverse blower 9 blow in the reverse direction, the warm air of the perimeter section D is sucked into the underfloor space A, the heat of the perimeter section D can be eliminated, and the sucked warm air of the living section C In the underfloor space A, the air is mixed with the conditioned air and blown out from the floor surface outlet 4 to the living space C, and the amount of heat of the air sucked in from the perimeter D is saved.

According to this embodiment, the following effects can be obtained. (1) The fan coil unit installed in the perimeter section in the conventional underfloor air-conditioning is not required, so that the space used in the room is increased, and the appearance and appearance of the perimeter section are improved. (2) The necessity of an air conditioner terminal in the perimeter section is eliminated, so that air conditioning equipment, construction and maintenance thereof can be simplified.

(3) Since there is a function to take in the air in the perimeter section below the floor, the amount of air-conditioning heat can be reduced by the amount of heat of the taken-in air. (4) Since the blower is placed under the floor, there is little conflict with building work such as the floor and walls, such as a fan coil unit.

In this embodiment, an example is described in which a blower having a variable forward / reverse blow direction is used. However, the blower may be provided with a variable rotational speed blower, and separate blowers for suction and suction are provided. It is needless to say that the same effect can be obtained even if the blower is mounted on the underfloor partition plate.

Embodiment 2 Next, an embodiment of the second invention will be described with reference to FIG. FIG. 4 is an enlarged cross-sectional view of a main portion showing the underfloor near the window side of a room employing underfloor blowout air conditioning according to another embodiment of the present invention. In the figure, components having the same reference numerals as those in FIG. 2 are the same as those in the first embodiment, and the description thereof will be omitted. In FIG. 4, reference numeral 9 denotes a forward / reverse variable blower having the same blowing direction as that of the previous embodiment, which is located in the underfloor space A in a space corresponding to a boundary between the perimeter section D and the living section C. Reference numeral 10 denotes a grill for exclusive use of the perimeter as in the previous embodiment.

Numeral 11 denotes a wind tunnel. The wind tunnel 11 includes the forward / reverse variable blower 9 and the perimeter dedicated grill 10.
And are integrally connected in their respective positions. According to the embodiment shown in FIG. 4, the blower 9 with variable blowing direction and the perimeter-dedicated grill 10 are integrated in the wind tunnel 11 to reduce the size, thereby contributing to the simplification of construction.

[0027]

As described in detail above, according to the present invention, it is possible to avoid installing a plurality of types of air conditioners in the same room, to save energy, and to save work, maintenance, and space. An outlet air conditioner can be provided. Further, according to the present invention, the air in the living room can be optimally used irrespective of the direction of the building by freely selecting the air at the side of the window in the normal and reverse directions, and the underfloor air conditioner contributing to energy saving and a comfortable office. Can be provided.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a room employing underfloor air-conditioning according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of a main part showing the underfloor near the window in FIG. 1;

FIG. 3 is an explanatory diagram showing an air conditioning operation of the room in FIG. 1;

FIG. 4 is an enlarged cross-sectional view of a main part showing the underfloor near the window side of a room employing underfloor blowout air conditioning according to another embodiment of the present invention.

FIG. 5 is a longitudinal sectional view showing an example of a room employing a conventional underfloor air conditioning.

[Explanation of symbols]

1: System floor, 2: Floor slab, 3: Air conditioner,
4 ... floor surface outlet, 7 ... window, 8 ... underfloor partition plate, 9 ... blower forward / reverse variable blower, 10 ... grill for exclusive use of perimeter,
11: wind tunnel, A: underfloor space, C: living part, D: perimeter part.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-306336 (JP, A) JP-A-5-180502 (JP, A) JP-A-4-302926 (JP, A) JP-A 61-306 11535 (JP, A) JP-A-7-4734 (JP, A) JP-A-5-312393 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 3/00 F24F 7 / 007 F24F 13/02 F24F 13/068 F24F 13/06

Claims (2)

(57) [Claims] An underfloor air-conditioning system comprising a plurality of floor-surface outlets provided on a floor of a floor of an indoor room to be air-conditioned as an air-conditioning air outlet duct. A partition is provided in a space corresponding to the boundary between the living room and the living room, and a blower for reversing the direction of air flow is provided on the partition, and a grill for blowing or sucking forward / reverse wind of the blower is provided on the floor at the window side. An underfloor air conditioner. 2. An underfloor air-conditioning system comprising a plurality of floor-surface outlets provided on a floor of a room to be air-conditioned as an air-conditioning air outlet duct, wherein the underfloor space has a window side. And a space corresponding to the boundary between the living room and a blower, wherein a blower that blows air forward and backward is located, and a grill that blows out or sucks forward or backward wind of the blower is located on a floor of a window side portion, and the blower and the grill And an underfloor air-conditioning apparatus, wherein the above-mentioned positions are integrally connected in the wind tunnel.