JPH065526Y2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to the structure of an air conditioner for a room such as an office in a building.

[Prior Art] In recent buildings, it is common to install an air conditioning system so that the temperature and humidity in each room are kept substantially constant throughout the year.

On the other hand, in recent offices, office equipment such as computers and word processors are often installed, and in order to clean the wiring, etc., an underfloor space is actively provided between the concrete floor base of the room and the floor board above it. In many cases, a free access floor structure is adopted such that the wiring is formed in the underfloor space.

In this case, from the air conditioning unit through the duct to the space above the ceiling of the room (the space between the ceiling board and the floor base above it, the same applies below), and from the air outlets punched in the ceiling board. When the conditioned air is blown down into the room and supplied, the following problems occur.

That is, the place where the user of the room installs the OA device and the computer is arbitrary, and in order to efficiently take the heat generated from these places, it is preferable to blow out the regulated air from the vicinity of the device. However, in general, the positions of the ducts arranged in the space above the ceiling and the positions of the air outlets formed in the ceiling plate are preset when the building (building) is constructed, and if the user of the room later changes them. It will be a large-scale construction.

Further, if the regulated air (generally, cold air) is blown down from the ceiling side, it becomes difficult for the regulated air to reach the OA equipments arranged near the floor, and the heat generated from the OA equipments and people is convected by the indoor air. Since the air flows toward the ceiling, there is a problem in that the adjustment air of the blown-down air collides with the hot air flow, resulting in poor efficiency of adjusting the temperature and humidity inside the room.

Therefore, as disclosed in Japanese Utility Model Application Laid-Open No. 62-99751 of the prior art, the air adjusted by an air conditioning unit installed in a room is guided to the underfloor space of a free access floor, and air is introduced to an appropriate portion of the floorboard. It is proposed that the above-mentioned underfloor space be positively used as a passage for the adjusted air, such as by providing an outlet for the air and introducing the adjusted air into the room from the outlet.

[Problems to be solved by the device]

In this way, the regulated air, which is generally cold air, blows upward from the floor side and sucks air from the ceiling side, so that the flow of the regulated air matches the convection direction of the air due to heat (upward), The efficiency of air conditioning in the room is improved, and moreover, since the controlled air is blown out from the floor side close to the OA equipment, the cooling effect on these equipment is also improved.

However, like the above-mentioned prior art, when the regulated air from the air conditioning unit is not directly guided by the duct but is directly introduced into the underfloor space, the static pressure of the regulated air at the introduction portion is The volume is extremely reduced due to the large volume, and it is not possible to supply the required amount of conditioned air to the necessary locations among the multiple air outlets to the chamber.
The problem arises that the air supply becomes unbalanced.

In order to eliminate this inconvenience, in order to position the outlet of the duct at a position far from the air conditioning unit in the underfloor space, a plurality of ducts connected to the air delivery section of the air conditioning unit are arranged in the underfloor space. Alternatively, it is conceivable to arrange a branch duct in the underfloor space from the air conditioning unit via the main duct and the relay tank, but it requires an underfloor space that is larger than the diameter of these ducts or the height of the relay tank. In the case of providing the above-mentioned free access floor, there is a problem that if the height dimension of the underfloor space is increased, the effective height dimension from the upper surface of the free access floor to the ceiling surface is reduced.

The present invention aims to solve these problems.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention provides a room in which an access floor is arranged above a floor base through an underfloor space to supply air conditioned by an air conditioning unit provided in the room to the underfloor space. In the air conditioner configured to be supplied from the above, in the space above the floor between the floor base and the ceiling plate on the lower surface side thereof, a duct for guiding the air adjusted by the air conditioning unit is provided. It is arranged to supply conditioned air from the duct to the underfloor space through a through hole penetrating the floor base.

〔Example〕

Next, an example will be described. In the figure, the floor base 1
Since the controlled air K is supplied to the room from the underfloor space 3 between the free access floor 2 and the free access floor 2 above it, the height of the four corners of the floor plate 2a on the free access floor 2 can be adjusted to be placed on the floor base 1. Although it is configured to be supported by the support leg body 4, in another embodiment, a support beam having a girder-like plan view shape or a parallel support beam may be configured to be supported by the support leg body. good.

The height dimension (H1) of the underfloor space 3 may be a height required for wiring for OA equipment or the like and piping for water, gas, etc., and need not be made larger than necessary.

Reference numeral 5 is a ceiling plate arranged from the floor base 1 above the room (upper floor) via a suspension support 6 such as a hanging bolt. Therefore, above the ceiling plate 5 is a space between the floor base 1 and the ceiling base 5. , Height dimension (H2)
A space 7 above the ceiling is formed.

This ceiling space 7 is generally 300 for ventilation.
It is required to have a height dimension of mm or more.

Reference numeral 8 is an air conditioning unit, and an air feeding portion 8a located below the air conditioning unit 8 faces the underfloor space 3 and an upper air suction portion 8b is arranged in the ceiling upper space 7 as desired.

Inside the air conditioning unit 8, a compressor, a cooling / heating coil, a blower, an air filter, a motor, a control panel, etc. are arranged, and an outside air intake duct and an exhaust duct (both not shown) are separately connected. ing.

Reference numeral 9 indicates the air delivery section 8 of the air conditioning unit 8.
a space that is connected to a and penetrates the floor base 1 and is below the ceiling 7
A main duct connected to the relay container 10 disposed inside, reference numeral 1
Reference numeral 1 denotes a plurality of branch supply pipes connected to the relay container 10 for supplying the regulated air K to the underfloor space 3, and a main duct 9
A flexible pipe or the like can be used for each branch supply pipe 11.

Further, the relay container 10 and each branch supply pipe 11 are arranged in the space 7 above the ceiling, and are suspended and supported by a suspension body 12 such as a mounting band attached to the floor base 1. The outlet 11a of the branch supply pipe 11 is preferably provided in a position apart from the installation position of the air conditioning unit 8 in the underfloor space 3 and at a position dispersed in appropriate places in a plan view of the room. Each branch supply pipe 11 is provided in a through hole 13 formed in the base 1.
Insert and fix the discharge end of the. Needless to say, the gap between the through hole 13 and the outer peripheral surface of the branch supply pipe 11 is sealed with packing.

Each branch supply pipe 1 such as keeping the length of the branch supply pipe 11 constant
It is more preferable to set the installation position of the relay container 10 so that the static pressure at the discharge port 11a of No. 1 becomes constant.

If the relay container 10 is provided with a suction port 14 for sucking the air in the space above the ceiling 7 and the relay container 10 is provided with an air filter 15 and a suction fan 16, the cooling performed by the air conditioning unit 8 is performed. The temperature of the air is made considerably lower than the temperature to be supplied into the underfloor space 3, and the high temperature air in the space above the ceiling 7 is introduced and mixed in the relay container 10 at a predetermined supply temperature and at a predetermined temperature. The necessary supply amount of the regulated air K can be sent out from each branch supply pipe 11.

When the relay container 10 is used as a mixer box for producing mixed air in this manner, the air in the space above the ceiling 7 is not sucked in, but the air in the room in which the air conditioning unit 8 is installed is sucked in. As described above, a suction pipe may be connected.

Further, a smoke sensor and a temperature sensor are provided in the room on each floor so that the occurrence of a fire can be quickly detected, and the detection signals of these sensors enable the main duct 9, the relay container 10, and the branch supply pipe 11 to be detected. A damper or shutter that opens and closes at a connecting portion or the like may be provided to stop the supply of air at the fire occurrence location.

Reference numeral 17 is a blowing unit for introducing the regulated air K from the underfloor space 3 into the room.
Has a built-in blower fan, and can be blown out in a swirling flow or a deflecting flow by a looper (not shown) as necessary.

Reference numeral 18 is a suction unit with a fan, which is provided at an appropriate location on the ceiling plate 5.

With the above-described configuration, the relay container 10 and the branch supply pipe 11 can be provided in the space 7 above the ceiling having a large height formed on the lower floor of the room equipped with the air conditioning unit 8.
Floor base 1 is an underfloor space 3 between free access floor 2
Since the adjusted air K can be sent upward from the side of the free access floor 2 under the condition that the height dimension of the computer is set small, a computer installed in the room smoothes the circulation of the adjusted air in the room. Therefore, the heat generated from the OA equipment can be put on the ascending airflow to cool it quickly.

In addition, reference numeral 19 is a fire-resistant partition wall for partitioning the underfloor space 3 into a plurality of places in plan view as necessary, and a clearance between the free access floor 2 and the lower surface of the floor plate 2a is a fire-resistant packing (not shown). I'm trying to close it.

In this way, by introducing the regulated air K with the branch supply pipes 11 facing the respective partition spaces, the static pressure in all the partition spaces can be made substantially constant. It is possible to reduce the number of branch supply pipes 11 without connecting the above.

[Operation and effect of device]

As described above, there is an advantage of supplying the regulated air to the room through the underfloor space on the floor base of the room and the access floor, that is, the upward airflow due to the heat generated from the heat source in the room and the upward movement of the regulated air. In accordance with the supply, the air flow becomes smooth and the cooling efficiency of the heat source can be improved.

In addition to this, according to the present invention, when the air conditioned by the air conditioning unit is supplied from the underfloor space side of the free access floor, the ceiling space of the room one floor below the room with this underfloor space is used. Therefore, a duct such as a relay container or a branch supply pipe for sending the regulated air is arranged in the space above the ceiling, and since the space above the ceiling generally requires a large height dimension, Even if the height of ducts such as relay containers and branch supply pipes is increased, it is not necessary to increase the height of the underfloor space itself below the free access floor, and the effective height in the room (from the top of the free access floor to the ceiling) The height (up to the bottom surface of the plate) does not decrease, and the effect that the inside of the room can be effectively used is exhibited.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a perspective view and FIG. 2 is a side sectional view. 1 ... Floor base, 2 ... Free access floor, 2a ...
Floor plate, 3 ... Underfloor space, 4 ... Support legs, 5 ... Ceiling plate, 6 ... Suspension support body, 7 ... Ceiling space, 8 ... Air conditioning unit, 8a ... Air sending section, 8b ...... Air intake part, 9 ...... Main duct, 10 ...... Relay container, 11 ...
… Branch supply pipe, 13… Through hole, 14… Suction port,
15 ... Air filter, 16 ... Suction fan, 17 ...
… Blowout unit, 18 …… Suction unit, 19
...... Fireproof partition wall.

Claims (1)

[Scope of utility model registration request] 1. A structure in which air controlled by an air conditioning unit provided in the room is supplied from the underfloor space to a room in which an access floor is arranged above the floor base via an underfloor space. In the air conditioner consisting of, in the space above the ceiling between the floor base and the ceiling plate on the lower surface side thereof,
A duct for guiding the air conditioned by the air conditioning unit is arranged, and conditioned air is supplied to the underfloor space from the duct through a through hole penetrating the floor base. Air conditioner that does.