JPH065528Y2 - 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.

[Conventional technology]

In modern buildings, it is common practice to equip the air conditioning system to keep the temperature and humidity in each room substantially constant throughout the year.

In that case, a central air conditioner for heating and cooling is installed at one place on the roof of the building or in the basement, and from here the space above the ceiling of each room (the space between the ceiling board and the floor base above it) is provided via a duct. That is, the same applies hereinafter), and the adjusted air is blown down into the room and supplied from the air outlets formed in the ceiling plate.

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, as disclosed in Japanese Utility Model Laid-Open No. 62-99751 of the prior art, air conditioned by an air conditioning unit installed indoors is guided to the underfloor space, and air is blown to an appropriate portion of the floorboard. It is proposed that the underfloor space be positively used as a passage for regulated air by providing a mouth and introducing the regulated air into the room through the outlet.

[Problems to be solved by the device]

By the way, when the regulated air is directly introduced into the above-ceiling space or the underfloor space, which is the large space, without guiding with a duct, the static pressure of the regulated air at the introduction portion is extremely large due to the large space. In addition, the adjusted air cannot be supplied to the air outlets at a plurality of locations in the chamber in a substantially constant amount, which causes an unbalanced supply of air.

In addition, in a conventional building, even if the space above the ceiling or the space below the floor is divided for each room, it is usually continued in one room. If there is a fire in a room, there is a problem that smoke spreads through the space in an instant and spreads throughout the room.

In particular, when the regulated air is supplied to and sucked out from the space above the ceiling or the space under the floor without passing through a duct, the forced circulation of the air increases the spread of the flame and smoke. There was a problem that the spreading speed (transmission speed) of the squirrel became abnormally high, and when toxic gas was mixed in smoke, the number of deaths due to fire increased.

The present invention aims to solve these problems.

[Means for Solving the Problems]

To achieve the above object, the present invention provides a room in which an access floor is disposed on a floor base through an underfloor space, and a ceiling plate is disposed below the floor base through an upper ceiling space.
Supplying the air conditioned by the air conditioning unit from one of the space under the floor or the space above the ceiling,
In an air conditioner configured to discharge from the other space, the underfloor space or the upper ceiling space that is the adjusted air supply side is partitioned into a plurality of locations in a plan view by a fireproof partition wall extending from the floor base, A branching tank for introducing the regulated air sent from the air conditioning unit is provided at an appropriate location in the partitioning space, and the branching tank is provided for introducing the regulated air to each of the partitioning spaces. A plurality of branch pipes are connected, and the outlets of the branch pipes are made to face the respective partition spaces through through holes provided in the refractory partition wall.

〔Example〕

Next, an embodiment will be described. From FIG. 1 to FIG. 3, a floor base 1 and a free access floor 2 above it are shown.
When the adjusted air K is supplied to the room from the underfloor space 3 between and, the four corners of the floor plate 2a of the free access floor 2 are supported by the height-adjustable support legs 4 mounted on the floor base 1. However, in another embodiment, a support beam having a checkerboard shape in plan view or a support beam having a parallel shape may be supported by the support legs.

Reference numeral 5 is a fire-resistant partition wall for partitioning the underfloor space 3 into a plurality of places in a plan view, and a gap between the free access floor 2 and the lower surface of the floor plate 2a is closed by a fire-resistant packing (not shown). ing.

Reference numeral 6 is a ceiling plate arranged from the floor base 1 above the room (upper floor) via a suspension support 7 such as a hanging bolt. Therefore, above the ceiling plate 6 and between the floor base 1 and A space 8 above the ceiling is formed.

Reference numeral 9 is an air conditioning unit, and an air feeding portion 9a located under the air conditioning unit 9 faces the underfloor space 3 and an upper air suction portion 9b is disposed in the ceiling space 8 as desired.

In the air conditioning unit 9, a compressor 10, a cooling
A heating coil 11, a blower 12, an air filter 13, a motor, a control panel, and the like are provided, and an outside air intake duct,
An exhaust duct (both not shown) is separately connected.

Reference numerals 14 and 14 denote branch tanks arranged at appropriate positions among a plurality of partition spaces 3a, 3a, ... Partitioned by the fireproof partition wall 5 in the underfloor space 3, and the branch tank 14 has the number of partition spaces. Depending on the requirements

Reference numeral 15 indicates a branch tank 10 from the air feeding portion 9a.
Main duct for sending conditioned air K to the tank, reference numeral 16 is a branch tank
4, which is a branch pipe for distributing the regulated air K to each of the partition spaces 3a, 3a, ..., The main duct 15 and the branch pipe 16 can each be a flexible pipe.

In addition, the main duct 15 and the branch pipe 16 are guided to the respective partition spaces through the holes 17 formed in the fireproof partition wall 5.

The length of the branch pipes 16 need only be set so as to reach the respective partition spaces, and the static pressure at the outlet 16a of each branch pipe 16 is made constant, such as making the lengths of all the branch pipes 16 constant. It is more preferable to set so that

Reference numeral 18 is a blow-out unit for introducing the regulated air K from the underfloor partition spaces 3a, 3a, ... To the room. Each blow-out unit 18 has a blow-in fan built therein, and a looper is provided as necessary. It can be blown out in a swirling flow or a deflecting flow (not shown).

Reference numeral 19 is a suction unit with a fan, which is provided at an appropriate position on the ceiling plate 6.

With this configuration, the underfloor space 3 can partition the floor base 1 to the lower surface of the free access floor 2 into a plurality of locations by the fireproof partition walls 5, so that even if the underfloor space 3 is a large area and a large volume space, Each partition space 3a, 3a, ...
Can have a small volume.

Since the regulated air K is introduced into the respective partition spaces via the branch pipes 16, the static pressure in all the partition spaces can be made substantially constant. Therefore, it is possible to directly connect the branch pipes to the respective outlets as in the conventional case. The number of branch pipes 16 can be reduced without need.

Further, since the underfloor space is partitioned by the fireproof partition wall 5, even if a fire occurs in a part of the partition space 3a and smoke is emitted,
Since it does not flow directly to other spaces and smoke only rises from the outlets at that location, if there are many outlets under the condition that there is no partition wall as in the past, it will be spread all over the room at the same time. It is possible to eliminate the situation that smoke comes out.

The space above the ceiling 8 may be partitioned into a plurality of places by the fireproof partition walls 20, and a duct may be provided to send air from each suction unit 19 to the partition space communicating with the air suction portion 9b.

Further, a smoke detection sensor and a temperature sensor are provided in each of the partition spaces 3a, 3a, ... In order to be able to quickly detect the occurrence of a fire, and the branch duct 14 and the branch pipe 16 can be detected by the detection signals of these sensors. A damper or a shutter that opens and closes may be provided at a connecting portion or the like to stop the supply of air to the partition space at the fire occurrence location.

As another embodiment, conversely to the above, an air feed unit is provided in the upper part of the air conditioning unit 9, an air intake unit is arranged in the lower part, and the space 8 above the ceiling is partitioned by a fire-resistant partition wall into a plurality of locations. Branch tanks are installed at appropriate points in the space,
The adjusted air K may be sent from the air conditioning unit 9 to the branch tank via the main duct, and the adjusted air K may be supplied from this branch tank into each partition space via the branch pipe.

In each of the above-mentioned embodiments, the air conditioning unit 9 does not need to be installed indoors, and the so-called central unit may be configured to distribute the regulated air to each room by a separate duct.

[Operation and effect of device]

As described above, the access floor is arranged on the floor base of the room through the underfloor space, while the ceiling plate is arranged below the floor base through the space above the ceiling. When supplying the adjusted air, the air is supplied to the room from one of the underfloor space and the ceiling above space, and in this case, the underfloor space or the above ceiling space on the adjusted air supply side is provided. The fireproof partition wall extending from the floor base is divided into a plurality of locations in a plan view, and a branching tank for introducing the regulated air sent from the air conditioning unit is arranged at an appropriate location among the plurality of partition spaces. The branch tank is connected to a plurality of branch pipes for introducing the regulated air into the respective partition spaces, and the outlet of the branch pipes is connected to the outlets of the branch pipes through through holes provided in the refractory partition wall. Since it is exposed to the inside, since the regulated air is introduced into each of the partition spaces via the branch pipe, the static pressure in all the partition spaces can be made substantially constant, and each outlet has the same outlet as in the conventional case. The number of branch pipes can be reduced without directly connecting the branch pipes.

Also, since the underfloor space is partitioned by a fireproof partition wall, even if a fire occurs in a part of the partition space and smoke is emitted, it does not flow directly to other spaces, and smoke is only emitted from the outlets at that location. Since it does not rise, it is possible to eliminate the situation where smoke is blown out all over the room all at once when there are a large number of outlets under the condition that there is no partition wall as in the conventional case.

Therefore, according to the present invention, it is possible to suppress the flow of smoke in the case of a fire under the condition that the supply of the regulated air can be made substantially uniform at each partition space location, and there is a remarkable effect of being safe. Of.

[Brief description of drawings]

1 is a perspective view, FIG. 2 is a side sectional view, and FIG. 3 is a plan view taken along the line III-III in FIG. 1 ... Floor base, 2 ... Free access floor, 2a ...
Floor plate, 3 ... Underfloor space, 4 ... Support legs, 5,20 ...
Fireproof partition wall, 6 ... Ceiling plate, 7 ... Hanging support, 8 ...
Space above the ceiling, 9 ... Air conditioning unit, 9a ... Air sending part, 9b ... Air suction part, 14 ... Branch tank, 15 ... Main duct, 16 ... Branch pipe, 17 ... Hole,
18 ... Blow-out unit, 19 ... Suction unit.

Claims (1)

[Scope of utility model registration request] 1. A room in which an access floor is disposed on a floor base through an underfloor space, and a ceiling plate is disposed below the floor base via an upper ceiling space. An air conditioning apparatus configured to supply air conditioned by an air conditioning unit from any one of the spaces and discharge the air from the other space, wherein an underfloor space or a ceiling on the adjusted air supply side is provided. The upper space is partitioned into a plurality of locations in a plan view by a fireproof partition wall extending from the floor base, and a branching tank for introducing the regulated air sent from the air conditioning unit to an appropriate location among the plurality of partition spaces. The branch tank is connected to a plurality of branch pipes for introducing regulated air into the respective partition spaces, and the outlets of the branch pipes are connected to the outlets of the branch pipes through through holes provided in the refractory partition wall. partition An air conditioning apparatus is characterized in that to face in between.