JPH0814645A - Air conditioner - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to completely discharge pollutants and form temperature stratification in the room, and to allow free wiring, and at low cost without increasing the required static pressure. Expand the clean and comfortable air conditioning environment not only to the interior zone but also to the perimeter zone. [Structure] A large number of air supply holes 6a are provided in the lower part of the chamber 1
A floor member 6 having an air supply chamber 7, an air supply chamber 7 formed at a lower portion of the floor member, an exhaust chamber 8 formed at an upper portion of the chamber, and a zone corresponding to a zone requiring air volume adjustment of the chamber. An air expansion and expansion device 35 for adjusting the air volume that is partitioned and arranged in the air supply chamber, and an air conditioner 13 that is connected to the air supply chamber are provided, and air is supplied to the room from the air supply hole at an ultra-low wind speed, A configuration in which the air volume adjustment air expansion / contraction device is expanded / contracted according to the room temperature to adjust the air volume to the zone.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is an air conditioner of the type in which air is supplied from the floor in the direction of the ceiling so as to exude at an extremely low wind speed to completely discharge pollutants and form temperature stratification in the room. Regarding the device.

[0002]

2. Description of the Related Art In the air conditioning of office buildings in recent years,
Local temperature distribution near the outlet or uneven temperature distribution due to heat generation from ubiquitous OA equipment, turbulence of air flow due to the presence of partitions, furniture, etc. Floors, especially carpeted floors It is an important issue to solve the problems of pollutants such as dust, mites, molds or cigarette smoke, body odor, and exhaled air that roll up from the surface and realize a clean and comfortable air conditioning environment.

However, the conventional general air-conditioning system, whether it is a ceiling blow-out system or a floor blow-out system, is a complete mixing system in which the air in the room is actively stirred and mixed from the air outlet with the force of air supply. Therefore, it is difficult to completely remove the pollutants that are generated or flowed in the room and are diluted and diffused by the air supply. It is possible to remove pollutants to some extent by increasing the ventilation frequency, but in order to maintain the desired room temperature, increase the blown air volume or considerably lower the supply air temperature in the case of cooling. However, in the case of heating, it has to be considerably high, and there is a problem that the equipment becomes large and energy consumption increases.

In order to solve this problem, Japanese Patent Laid-Open No. 4-1
In Japanese Patent No. 61749, the air quality is improved by forming a piston flow in which air is supplied into the room at a low wind speed from the entire surface of the floor and the whole surface of the ceiling is a perforated plate to uniformly push the air toward the ceiling surface. I have a suggestion.

[0005]

However, the air-conditioning system disclosed in Japanese Patent Laid-Open No. 4-161749 is a system in which air is supplied to the room from the entire surface of the floor at a low wind speed, and therefore the interior zone occupying the central main area of the room. Can be easily maintained at the set temperature in the room, but since it is not a method of actively stirring and mixing the air in the room with the momentum of supply air, the perimeter zone, which is the window side area affected by disturbance, There is a problem that it is difficult to maintain a comfortable air-conditioning environment because it is easily affected by changes in outside temperature and solar radiation. In addition, in office buildings in recent years, due to the increase in computers and other office automation equipment, there is a cooling load even in the winter, which makes it more difficult to control the air conditioning in the perimeter zone.

In addition to the above problems, it is effective to change the air volume from a predetermined floor surface in order to cope with the case where a small room is provided in the room and to cope with the perimeter load at the peak time. As a method of changing the air flow rate from a predetermined floor surface, as shown in FIG. 3, a method of dividing a portion whose air flow rate is desired to be controlled and controlling the air conditioning air flow rate by a damper can be considered. However, this method has the following problems.

[0007] The free access floor, which is supposed to allow free wiring, can be partitioned and wiring cannot be made freely. Since only the air that has passed through the damper is blown to the perimeter zone, the required static pressure becomes high and extra transport energy is required. Since a partition member and a damper having high airtightness are required over a wide range, this causes a cost increase.

The present invention is intended to solve the above problems, and a first object thereof is to supply air so as to exude at an ultra-low wind speed from the floor toward the ceiling to completely remove pollutants. It is an object of the present invention to provide an air conditioner capable of discharging and forming a temperature stratification in a room and expanding a clean and comfortable air conditioning environment not only to the interior zone but also to the perimeter zone. A second object of the present invention is to provide an air conditioner that allows free wiring when changing the air volume from a predetermined floor surface and realizes low cost without increasing required static pressure. is there.

[0009]

To this end, the air conditioner of the present invention is provided in the lower part of the chamber 1 and has a large number of air supply holes 6a over its entire surface.
A floor member 6 having an air supply chamber 7, an air supply chamber 7 formed at a lower portion of the floor member, an exhaust chamber 8 formed at an upper portion of the chamber, and a zone corresponding to a zone requiring air volume adjustment of the chamber. An air expansion and expansion device 35 for adjusting the air volume that is partitioned and arranged in the air supply chamber, and an air conditioner 13 that is connected to the air supply chamber are provided, and air is supplied to the room from the air supply hole at an ultra-low wind speed, It is characterized in that the air volume adjusting air expansion / contraction device is expanded / contracted according to the room temperature to adjust the air volume to the zone. It should be noted that the numbers added to the above-mentioned configurations are for comparison with the drawings in order to facilitate understanding of the present invention, and the configurations of the present invention are not limited thereby.

[0010]

In the present invention, by providing the air expansion and expansion device for adjusting the air volume in the air supply chamber under the floor, free wiring is possible and at the low cost without increasing the required static pressure, only in the interior zone. Instead, the clean and comfortable air conditioning environment is extended to the perimeter zone.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic sectional view showing an embodiment of an air conditioner of the present invention, and FIG. 2 is a schematic plan view of FIG.

In FIG. 1, room 1, machine room 2, corridor 3
Are formed between the upper and lower slabs 4, 5. A floor member 6 having a large number of blow-out holes 6a is arranged in the lower portion of the chamber 1, and an air supply chamber 7 is formed in the lower portion of the floor member 6. Further, a ceiling member 8 having a plurality of exhaust holes 8 a is arranged above the chamber 1, and an exhaust chamber 9 is formed above the ceiling member 8. In this embodiment, the ceiling member 8 is provided with a plurality of exhaust holes 8a, but one or a plurality of exhaust ports may be provided, and an exhaust port may be provided on the upper portion of the wall or the ceiling member. 8 and the wall may be provided with an exhaust port. In short, it is necessary to form a temperature stratification by supplying air so as to exude air into the room at ultra-low wind speed without providing ducts on the intake side and the exhaust side. To be able to do so.

As shown in FIGS. 1 and 2, a filter 10, a hot / cold water coil 11, and an air conditioner 13 having an air supply fan are installed in the machine room 2. The number of air conditioners 13 installed is set according to the size of the room 1. An exhaust fan 14 is connected to the exhaust chamber 9, and a part of the exhaust gas is circulated to the air conditioner 13. Also,
A breathable carpet member 15 is laid on the entire surface of the floor member 6. A heat exchanger of a heat pump may be provided instead of the cold / hot water coil 11, or a cold water coil and an electric heater may be combined.

Further, a Venetian blind 17 is provided inside the window portion 16, and a support tool 17a for the Venetian blind 17 is mounted in a blind box 18 formed under the upper slab 4, and the blind box 18 is provided.
To communicate with the exhaust chamber 9, and the window portion 1
The hot air in the upper part of 6 is exhausted from the blind box 18.

Further, in the air supply chamber 7, there is provided a tubular air volume adjusting air expanding / contracting device 35 corresponding to a boundary portion between the interior zone I and the perimeter zone P, and the first air supply for the interior zone I is provided. The chamber 7A and the second air supply chamber 7B for the perimeter zone P are defined. The air volume adjusting air expansion / contraction device 35 is made of a flexible and airtight material. Air inflation / expansion device 35 for adjusting air volume
As shown in FIG. 2, the air conditioner 13 is connected via a pressure guiding pipe 36.
It is connected to the. The pressure guiding pipe 36 is provided with a pressurization adjusting valve 37, and the opening degree of the pressurization adjusting valve 37 is controlled by a command from the indoor temperature sensor 38.

The operation of this embodiment having the above structure will be described. In this air conditioning system, air having a temperature slightly lower than the set temperature in the room and air having a temperature slightly higher than the set temperature are supplied from the air conditioner 13 through the air supply chambers 7A and 7B to the air supply holes of the floor member 6. Air is supplied from 6a. At this time, the supply air volume is also controlled by controlling the rotation speed of the supply fan 12. The air supply rate in chamber 1 is
About 0.1 mm to 100 mm per second (preferably 5 m per second
The temperature is stratified in the chamber 1 by supplying air so as to exude into the chamber 1 at an ultra-low wind speed (m-10 mm) (a speed not felt by human skin). A heat rising flow due to the heat is generated in the upper part of the heat generating body such as the human body and OA equipment, and the supplied air is attracted by this flow and gathers in the heat generating body, contaminated air containing heat load and pollutants. C quickly moves to the upper space, and the area around the occupant M is always surrounded by the fresh air exuding from the entire floor.

Then, the temperature in the perimeter zone P is detected by the indoor temperature sensor 38, the opening degree of the pressurizing adjustment valve 37 is set according to this value, and the pressurized air from the air conditioner 13 is expanded by the air volume adjusting air. It is supplied to the compression device 35. The air volume adjusting air expansion / contraction device 35 inflates and contracts like a balloon in the Y direction in FIG. 2 and adjusts the air volume flowing from the first air supply chamber 7A to the second air supply chamber 7B to the perimeter zone P. In the perimeter zone P, it is possible to reduce the influence of changes in the outside temperature depending on the season and the influence of solar radiation, and it is possible to extend the clean and comfortable air conditioning environment not only to the interior zone I but also to the perimeter zone P.

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 air volume adjusting air expansion / contraction device 35 is provided corresponding to the boundary between the interior zone I and the perimeter zone P, it may be provided when a partition zone is provided in the room.
A plurality of air volume adjusting air expansion / contraction devices may be divided and arranged corresponding to a plurality of zones.

[0019]

As is apparent from the above description, according to the present invention, air is supplied so as to seep out from the floor toward the ceiling at an extremely low wind speed, so that pollutants are completely discharged and indoors. By making it possible to form a temperature stratification and providing an air volume adjusting air expansion / contraction device, a clean and comfortable air conditioning environment can be extended not only to the interior zone but also to the perimeter zone. Further, it has the following excellent effects.

Since the air expansion / contraction device is flexible, it is possible to freely wire the necessary parts.

Since the air expansion / contraction device is flat at the maximum air volume, the required static pressure is not increased so much.

Since the air inflating / deflating device is a kind of balloon, airtightness is not required so much at the time of installation, the installation can be performed easily, and since it has a simple structure, it can be realized at low cost. .

By controlling the state of air supply in the perimeter zone, it is possible to prevent dew condensation on the window surface in winter.

The change in the room partition can be easily dealt with by simply changing the position of the air volume adjusting air expansion / contraction device.

Since the temperature stratification is formed in the room, the required number of ventilations can be reduced, and as a result, the power of the air conditioner and the exhaust fan can be reduced and the size can be reduced.
In addition, the heat load on the device of the air conditioner can be reduced.

This can be detected immediately above the fire source, and early detection of a fire can be performed.

Since the supply air bleeds into the room at an extremely low wind speed, dust adhering to the floor does not fly up, and the ventilation of the carpet member facilitates cleaning, and periodic ventilation allows mites to be cleaned. It can suppress the reproduction of mold and mold.

Since the supply air exudes from the entire floor, OA
You can freely design the layout of equipment and furniture,
Even when the OA devices are ubiquitous, the supplied air autonomously flows toward the heating element, and it is possible to realize a flat air-conditioning environment.

〓 It is not necessary to install ducts on the air supply side and the air exhaust side, and therefore, it is possible to supply air even when the height of the air supply chamber is low, that is, even on a low floor, thereby reducing the construction cost. You can

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of an air conditioner of the present invention.

2 is a diagram showing a drive mechanism of the air volume adjusting air expansion / contraction device of FIG. 1. FIG.

FIG. 3 is a diagram for explaining the problems of the present invention.
3A is a sectional view, and FIG. 3B is a plan view of FIG.

[Explanation of symbols]

1 ... Room, 2 ... Machine room, 3 ... Corridor, 4, 5 ... Slab, 6 ...
Floor member 6a ... Air supply hole, 7 ... Air supply chamber, 7A ... First air supply chamber 7B ... Second air supply chamber, 8 ... Ceiling member, 8a ... Exhaust hole 9 ... Exhaust chamber, 10 ... Filter, 11 ... Cold / hot water coil 12 ... Air supply fan, 13 ... Air conditioner, 14 ... Exhaust fan 15 ... Carpet member, 16 ... Window part, 17 ... Venetian blind 18, Blind box, 35 ... Air expansion / contraction device for air volume adjustment, 36 ... Pressure guide pipe 37 ... Pressurization adjusting valve, 38 ... Indoor temperature sensor

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Tatsuo Nobe 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Yoichi Haga 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd.

Claims (1)

[Claims] 1. A floor member disposed in the lower part of the chamber and having a large number of air supply holes on the entire surface, an air supply chamber formed in the lower part of the floor member, and an exhaust chamber formed in the upper part of the chamber. An air expansion / contraction device for air volume adjustment partitioned and arranged in the air supply chamber corresponding to a zone requiring air volume adjustment of the chamber, and an air conditioner connected to the air supply chamber are provided. An air conditioner, characterized in that air is supplied to the room from the pores at an extremely low wind speed, and the air volume adjusting air inflating / deflating device is inflated / deflated according to the indoor temperature to adjust the air volume to the zone.