JPH08121815A - Air conditioning equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To maintain the environment in the interior zone and the perimeter zone without using different kinds of energy, and to improve the comfort of the perimeter zone at low cost. [Structure] A floor member 5 disposed in a lower portion of a room 3, a wiring space 6 formed in a lower portion of the floor member, and an interior zone I in the room are connected to supply and return conditioned air. The air conditioner 17 and a fan unit 23 installed in the lower part of the room on the side of the window 11 and having a perimeter fan 22 inside are provided. During the winter cooling operation, a down draft that descends along the window side is provided to the perimeter fan 22. The air is sucked by the air conditioner and is circulated to the air conditioner 17 via the wiring space 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, in air conditioning of an office building or the like, maintains an environment in an interior zone (working area) and a perimeter zone (area affected by disturbance on the window side) without using different kinds of energy. Air conditioning equipment that can

[0002]

2. Description of the Related Art In a winter air conditioning plan for an office building or the like, the interior zone generates a lot of internal heat and requires cooling, while the perimeter zone has a large heat loss from the window surface. Heating may be required. In order to cope with this, a method of performing cooling operation in the interior zone and heating operation in the perimeter zone has been conventionally adopted. However, this method has a problem in that the different energies of the cold air and the warm air cancel each other out in the vicinity of the boundary between the interior zone and the perimeter zone, and wasteful energy is consumed as a mixing loss.

Further, in the perimeter zone, a portion having a large heat circulation rate such as a glass surface is cooled by the low outside air temperature in winter, and the air in the portion in contact with the indoor side is cooled.
The specific gravity of the air increases and a downdraft occurs, which stays at your feet, making people feel cold. Further, cold radiation is generated from the cooled window surface to increase the cold. In summer, the temperature near the window becomes high due to high outside air temperature and solar radiation, and the heat is doubled due to the addition of warm radiation.

Conventionally, in order to solve this problem, a method of improving the heat insulation performance by making a glass window a pair of glasses or double glazing, or a method of warming the air in the perimeter zone by a radiator or a fan coil unit. , To prevent draft and cold radiation in winter, while
In the summer, cooling is strengthened with cool air and fan coil units. However, both methods have a problem that a large amount of equipment cost is required.

The present invention solves the above problems, and a first object of the present invention is to provide an air conditioner capable of maintaining the environment in the interior zone and the perimeter zone without using different kinds of energy. A second object is to provide an air conditioning facility that can improve the comfort of the perimeter zone at low cost.

[0006]

To this end, the air-conditioning equipment according to claim 1 of the present invention comprises a floor member arranged in the lower part of the room, a wiring space formed in the lower part of the floor member, and the room. Equipped with an air conditioner connected to the interior zone of the room to supply and return conditioned air, and a fan unit installed at the lower part of the window side of the room, which has a perimeter fan inside. The downdraft that descends along is sucked by the perimeter fan and circulated to the air conditioner through the wiring space. Further, the air conditioning equipment according to claim 2 of the present invention,
A floor member arranged in the lower part of the room, a wiring space formed in the lower part of the floor member, an air conditioner connected to the interior zone of the room to supply and return conditioned air, and the room Installed in the lower part of the window side of the, and equipped with a fan unit having a fan for the perimeter inside, during winter heating operation, the downdraft that descends along the window side is sucked by the fan for the perimeter, and is passed through the wiring space to the air conditioner. The cooling air is supplied to the window side through the wiring space by the perimeter fan during the circulation and during the summer cooling operation.

[0007]

In the present invention, during the winter cooling operation, the cold area of the perimeter zone can be eliminated by sucking down draft, and the environment can be maintained without using different energy in the interior zone and the perimeter zone. Further, during winter heating operation, the temperature of the window surface can be increased to reduce cold radiation.
Also, during the summer cooling operation, air that has become hot due to the supply of cold air to the perimeter zone and the rising airflow generated on the window surface is sucked from the return air port provided on the upper part of the window surface and circulated to the air conditioner as return air. Therefore, the indoor load can be reduced. Then, the suction of the down draft and the supply of the cool air to the perimeter zone can be solved by simply using the wiring space and providing the fan unit, so that it can be realized at a low cost. Moreover, since only the fan unit is used, the height of the window counter can be reduced and the design can be improved.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are schematic cross-sectional views showing one embodiment of the air conditioning equipment of the present invention. FIG. 1 shows a state during winter cooling and heating operation, and FIG. 2 shows a state during summer cooling operation. There is.

In FIG. 1, slabs 1 and 2 above and below the building are shown.
A room 3 and a machine room 4 are formed between them, and a floor member 5 is disposed below the room 3 at a distance from the slab 2.
A wiring space 6 is formed under the. Also, room 3
A ceiling member 9 having a plurality of air supply ports 7 and a return air port 8 is disposed on the upper part of the, and a return air passage 10 is formed between the ceiling member 9 and the slab 1. A blind box 12 is provided above the perimeter zone P, which is an area affected by disturbance on the side of the window 11, a blind 13 is installed in the blind box 12, and the blind box 12 communicates with the return air passage 10. A return air port 14 is formed.

An air conditioner 17 having a cold / hot water coil 15 and an air supply fan 16 is installed in the machine room 4. The number of installed air conditioners 17 is set according to the size of the room 3.
A heat pump type heat exchanger may be provided instead of the cold / hot water coil 15, or a cold water coil and an electric heater may be combined. An exhaust fan 18 is provided in the return air passage 10.
Is connected to the outside air intake duct 20 so that a part of the return air is circulated to the intake port 19 of the air conditioner 17.
The fresh outside air is sucked into the suction port 21 of the air conditioner 17.

A fan unit 23 having a perimeter fan 22 is installed on the lower floor of the perimeter zone P on the window 11 side. This fan unit 23 has a window 1
It also serves as a window counter that decorates the lower part of 1 side. The main body of the perimeter fan 22 is rotatably provided, and the blowing direction is vertically reversible.

The floor member 5 includes a ventilation port 24, an air supply port 25,
The suction port 26 is formed. The ventilation port 24 communicates with the fan unit 23, the air supply port 25 is connected to the air supply fan 16 via an auxiliary air supply duct 28 described later, and the suction port 26 is connected to the suction side of the air conditioner 17. .

A main air supply duct 27 connected to each air supply port 7 is connected to the air supply fan 16, and the main air supply duct 27 is connected.
An auxiliary air supply duct 28 is branched and connected to. The main air supply duct 27 is provided with an air volume adjusting damper 29, and the auxiliary air supply duct 28 is provided with an opening / closing valve 30.

The operation of the present invention having the above configuration will be described. Air supply fan 1 during both cooling and heating operation
The fresh air and the return air from the inside of the chamber 3 are sucked from the outside air intake duct 20 by the air conditioner 6, and the cold / hot water coil 15 of the air conditioner 17 is discharged.
The air that has been cooled or heated by the air is supplied from the air supply port 7 to the interior zone I in the room 3 via the main air supply duct 27, and the return air in the room 3 is returned from the return air ports 8 and 14. The air is exhausted to the outside by the exhaust fan 18 through the air passage 10, and a part of the return air passes through the suction port 19 and the air conditioner 1
Returned to 7.

During the cooling or heating operation in winter, as shown in FIG. 1, the on-off valve 30 is closed and the perimeter fan 2 is closed.
2 is rotated so that the blowing direction is downward, and the downdraft and the room air that descend along the side of the window 11 are sucked by the perimeter fan 22 and are circulated to the air conditioner 17 via the wiring space 6. . Therefore, the cold area of the perimeter zone P is eliminated by the suction of the downdraft, and the air of the interior zone I is also sucked during the heating operation, so that the surface temperature of the window 11 rises and the cold radiation can be reduced.

During the summer cooling operation, as shown in FIG.
The on-off valve 30 is opened so that the air flow direction of the perimeter fan 22 is upward, and the cool air from the air conditioner 17 is supplied to the window 11 side through the auxiliary air supply duct 27 and the wiring space 6 by the perimeter fan 22. , Promotes the rise of the ascending airflow that naturally rises due to the heat received by the window 11, sucks the high-temperature air from the return air port 14 provided in the upper part of the perimeter zone P, and causes it to recirculate to the air conditioner 17 as return air . Therefore, the cold air supplied to the perimeter zone P and the rising airflow generated on the window surface cools the surface of the blind 13 and at the same time, the high temperature air in the perimeter zone P is sucked and discharged from the return air port provided on the upper portion of the window surface. The load can be reduced.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and various modifications can be made. For example, in the above embodiment,
Although the cold air from the air conditioner 17 is supplied to the perimeter zone P via the wiring space 6 during the summer operation, even if the cool air in the room 3 is supplied to the perimeter zone P via the wiring space 6. Good.

Further, although the main body of the perimeter fan 22 is rotatably provided in the above embodiment, a fan of a type in which the blowing direction can be reversed up and down by reversing the rotation direction of the fan is adopted. You may.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing one embodiment of the air conditioning equipment of the present invention, showing the operation during the winter season.

FIG. 2 is a schematic cross-sectional view showing one embodiment of the air conditioning equipment of the present invention, showing the operation during the summer season.

[Explanation of symbols]

1, 2 ... slab, 3 ... room, 4 ... machine room, 5 ... floor member, 6
... Wiring space 7, 25 ... Air supply port, 8, 14 ... Return air port, 9 ... Ceiling member,
10 ... Return air passage 11 ... Window, 12 ... Blind box, 13 ... Blind 15 ... Cold / hot water coil, 16 ... Air supply fan, 17 ... Air conditioner 18 ... Exhaust fan, 19, 21, 26 ... Intake port, 20
... outside air intake duct 22 ... perimeter fan, 23 ... fan unit, 2
4 ... Vent hole 27 ... Main air supply duct, 28 ... Auxiliary air supply duct, 29 ... Damper for adjusting air volume 30 ... Open / close valve, I ... Interior zone, P ... Perimeter zone

Claims (2)

[Claims] 1. A floor member disposed in a lower portion of a room, a wiring space formed in a lower portion of the floor member, and an interior zone of the room connected to supply and return conditioned air. An air conditioner and a fan unit that is installed in the lower part of the window side of the room and has a perimeter fan inside are provided, and during the winter cooling operation, the downdraft that descends along the window side is sucked by the perimeter fan, and the wiring space is provided. Air-conditioning equipment characterized by being returned to the air-conditioner via the 2. A floor member arranged in the lower part of the room, a wiring space formed in the lower part of the floor member, and an interior zone of the room are connected to supply and return conditioned air. It is equipped with an air conditioner and a fan unit installed in the lower part of the window side of the room and having a perimeter fan inside. During winter heating operation, the downdraft that descends along the window side is sucked by the perimeter fan, and the wiring space is provided. The air conditioner is characterized in that it is circulated to the air conditioner via the above, and during the summer cooling operation, the cool air is supplied to the window side through the wiring space by the perimeter fan.