JPH0842912A - Air conditioner and tile carpet for air conditioning - Google Patents

Abstract

PURPOSE:To effectually and comfortably achieve air conditioning by gradually and uniformly feeding cold/hot air from a floor whole surface into a room and carrying the cold/hot air on a natural air flow. CONSTITUTION:There are provided a floor member 5 disposed on a lower part in a room 2, any air supply holes 5a formed in the floor member having their total area being 1.5% or more of the entire area of the floor member, a plurality of tile carpets 12 laid on the floor member, an air supply chamber 6 formed on a lower part of the floor member, an exhaust chamber 8 formed on an upper part in the room, and an air conditioner 9 connected with the air supply chamber. Air is supplied from the air supply holes into the room at an air velocity of 0.1mm to 100mm per second, and air temperature at the height of the feet of a dweller in the room is controlled to be kept at a set value. The tile carpet comprises a carpet member having a permeability and a backing layer constructed by laminating at least one of a mesh member, a permeable core member, and a permeable substrate on the back surface of the carpet member, and breathing resistance is from 0.1 to 3.0mmAq when an air supply passage velocity is 1cm/sec as a surface velocity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner of a type which discharges pollutants from a floor to a ceiling at an ultra-low wind speed and forms temperature stratification, and an air conditioning tile carpet applied to the air conditioner.

[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 blowing system or a floor blowing system, is a complete mixing type system in which the air in the room is positively agitated by the air supply from the air outlet. 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 some pollutants by increasing the ventilation frequency,
In order to maintain the desired indoor temperature, it is necessary to increase the amount of air blown out, to supply air at a considerably low temperature in the case of cooling, and to make it considerably high in the case of heating. Increases consumption.

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 method of the above-mentioned Japanese Patent Laid-Open No. 4-161749 has the advantage that contaminants can be removed, but on the other hand, since the air supply flows from the floor to the ceiling at a low speed, There are problems that a temperature gradient is generated at the top and bottom and it is difficult to flow cold and warm air uniformly over the entire floor. In addition, there is a problem that an excessive air flow feeling occurs and the comfort feeling is uneven, and the degree of freedom for changing the layout of the room is small.

Furthermore, in practice, it is necessary to lay a carpet on the floor surface, but the base material of a normal tile carpet is made of vinyl chloride and has no air permeability, and it has sufficient air permeability in the conventional carpet. There is no product that is both durable and dimensionally stable. Therefore, it is conceivable to provide a large number of holes in the carpet, but if the holes are large, there is a problem in terms of aesthetics, dimensional stability and durability, and in the case of small holes that do not impair aesthetics, However, there is a problem that the holes are clogged with dust or the like brought in while walking, which impairs the necessary air permeability, and in either case, there is a risk of liquid or dust falling into the double floor.

The present invention is intended to solve the above-mentioned problems, in which cold and warm air for air conditioning is gently and evenly fed into the room from the entire floor, and the cold and warm air is placed on the natural air flow in the room. An object of the present invention is to provide an air conditioning device and an air conditioning tile carpet that can efficiently and comfortably perform air conditioning.

[0008]

Therefore, in the air conditioner of the present invention, the total area of the floor member disposed in the lower part of the room and the holes formed in the floor member is 1. 5% or more of a plurality of air supply holes, a plurality of tile carpets laid on the floor member, an air supply chamber formed in a lower portion of the floor member, and an exhaust chamber formed in an upper portion of the chamber. And an air conditioner connected to the air supply chamber, which supplies air to the room from the air supply hole at a wind speed of 0.1 mm to 100 mm per second, and sets the air temperature at the height of the feet of a resident in the room to a set value. It is characterized by controlling so as to keep it. Further, the tile carpet comprises a carpet member having air permeability and a backing layer formed by laminating at least one of a mesh member, a gas permeable core material and a gas permeable base material on the back surface of the carpet member. At a speed of 1 cm / sec, ventilation resistance is 0.1 to 3.0 mm
It is characterized by being Aq.

[0009]

In the present invention, the air that has passed through the air supply holes of the floor member in spots spreads flatly in the breathable tile carpet, and becomes a uniform blowout from the entire floor surface into the room. In the room, a heat rising flow due to the heat is generated in the upper part of the heating element such as a human body and OA equipment, and the supplied air is attracted by this flow and gathers in the heating element.
Contaminated air containing pollutants such as heat load and cigarette smoke quickly moves to the upper space, and the surroundings of the occupants are always surrounded by fresh air oozing from the entire floor, eliminating the feeling of excessive air flow. Achieves comfortable and spatially-unbiased air conditioning.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows one embodiment of the air conditioner of the present invention,
1A is a schematic cross-sectional view, and FIG. 1B is FIG. 1A.
It is an expanded sectional view showing one example of the tile carpet of.

In FIG. 1A, the chamber 2 is formed between the upper and lower slabs 3 and 4. A floor member 5 having a large number of blow-out holes 5a is provided on the lower surface of the chamber 2 to form a double floor. An air supply chamber 6 is formed in the double floor, that is, below the floor member 5. The diameter of the blowout hole 5a is 1
It is necessary to ensure that the total area of the blowout holes 5a is about 0 mm and is 1.5% or more of the total area of the floor member 5. 1.5%
This is because if it is less than the above range, the air resistance rapidly increases and an extreme pressure loss occurs. Since it is not necessary to embed the blowout port in the floor surface unlike the conventional floor blowout air conditioning, the height of the double floor is simply defined only by the distribution of air. Therefore, it is not necessary to secure the height of the conventional OA floor of 200 to 300 mm, and it can be said that about 100 mm is sufficient for a normal office.

A ceiling member 7 having a plurality of exhaust holes 7a is disposed above the chamber 1, and an exhaust chamber 8 is formed above the ceiling member 7. In this embodiment,
Although the ceiling member 7 is provided with a plurality of exhaust holes 7a, one or a plurality of exhaust ports may be provided, or an exhaust port may be provided at an upper part of the wall, or both the ceiling member 7 and the wall may have an exhaust port. May be provided, and in short, the air supply and exhaust can be performed indoors without providing ducts on the air supply side and the exhaust side.

An air conditioner 9 is connected to the air supply chamber 6, and an exhaust fan 10 is connected to the exhaust chamber 8.
A part of the exhaust gas is supplied to the air conditioner 9 via the return passage 11. A plurality of breathable tile carpets 12 are laid on the entire surface of the floor member 5.

In this air-conditioning system, the air supply rate in the room 1 is about 0.1 mm to 100 mm per second (preferably 5 mm to 10 mm per second), which is an ultra-low wind speed (speed not felt by human skin) into the room 1. Air is supplied so as to exude, and a temperature stratification is formed in the living room 1. In addition, it was found from an experiment that the temperature rises under the influence of the indoor load when passing through the air supply hole 5a of the floor member 5. This is because the temperature of the double floor rises due to radiant heat from the ceiling surface, lighting equipment, human body, etc.Therefore, the air temperature at the feet of the occupants in the room is controlled to be maintained at the set value, and as a result,
The supply air temperature is 0.1 to 5.0 ° C. lower than the set value (in the case of cooling).

The air that has passed through the air supply holes 5a of the floor member 5 in a dot shape spreads in a flat shape inside the air-permeable tile carpet 12, and becomes a uniform blowout from the entire floor surface into the room, which is excessive. The feeling of airflow is eliminated, and comfortable air conditioning with no spatial bias can be realized. A heat rising flow due to the heat is generated in the upper part of the human body and the heating element such as OA equipment, and the supplied air is attracted by this flow and gathers in the heating element, resulting in heat load and pollution of cigarette smoke. The polluted air C containing the substance 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. Further, since the cool and warm air exudes into the chamber 1 at an ultra-low wind speed, dust adhering to the floor does not fly up.

Next, the air conditioning tile carpet of the present invention will be described. The tile carpet of the present invention is
A backing layer formed by laminating a breathable carpet member and at least one of a mesh member, a breathable core material and a breathable substrate on the back surface thereof, and when the air velocity passing through the air supply is 1 cm / sec Resistance is 0.1-3.0mm
It is characterized by being Aq.

As the carpet member, any of needle-punched type carpets and tuft type carpets can be used, but those having an appropriately high air permeability are preferable. As the mesh member, a glass fiber cloth having a lengthwise and widthwise length of 5 to 20 fibers / inch is used to ensure dimensional stability.

The backing layer comprises a non-woven mat of chemical fibers and a small amount of an adhesive forming the mat, and has a ventilation resistance of 0.1 to 0.1 at a surface velocity of 1 cm / sec.
The thickness is 3.0 mmAq, preferably 0.5 to 1.0 mmAq, and the thickness is preferably about 1 to 10 mm. As the chemical fiber constituting the backing layer, any of nylon, polyester, polypropylene, vinyl chloride and the like can be used. The adhesive used for imparting shape retention to the non-woven mat of chemical fibers is appropriately selected from those suitable for the material of the above-mentioned chemical fibers. The intersection should be fixed so that the backing layer does not impair the air permeability.

FIG. 1B shows an embodiment of a tile carpet. As the carpet member 13, a tufted carpet obtained by tufting a nylon raw yarn on a breathable polyester nonwoven fabric was used. On the other hand, the non-woven mat 15 of polyester fiber is impregnated with a small amount of rubber-based or latex-based adhesive, and the glass fiber non-woven fabric 1 is applied to the back surface of the carpet member 13.
No. 4, the adhesive was dried, the adhesive was dried, and the total thickness was 7 mm.
The air-permeable tile carpet 12 having a thickness of 3 mm.
The air velocity of the tile carpet 12 passing through the air is 1 cm
/ Sec, the ventilation resistance was 0.7 mmAq.

By the way, when the floating dust velocity in the respiration area was compared between the present invention and general ceiling blowout air conditioning under the same ventilation air volume (6 times / hour), it was 0.166 mg / cigarette smoke. 0.062 mg / m ³
m ^3, with respect to the dust on the floor and 0.045 mg / m ³ with respect to 0.070mg / m ^3, towards the present invention it was possible to obtain measurement results that it is clean.

[0021]

As is apparent from the above description, according to the present invention, the cool and warm air for air conditioning is gently and uniformly fed into the room from the entire floor, and the cool and warm air is made into a natural air flow in the room. It can be used for efficient and comfortable air conditioning. Further, it has the following excellent effects.

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 the fire can be detected early.

Since the supply air exudes into the room at an extremely low wind velocity, dust adhering to the floor does not fly up, and the ventilation of the tile carpet 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.

Since it is not necessary to install ducts on the air supply side and the air exhaust side, air can be supplied even when the height of the air supply chamber is low, that is, even on a low floor, so that the construction cost can be reduced. it can.

[Brief description of drawings]

1 shows an embodiment of an air conditioner of the present invention, and FIG.
1A is a schematic cross-sectional view, and FIG. 1B is an enlarged cross-sectional view showing an embodiment of the tile carpet of FIG. 1A.

[Explanation of symbols]

2 ... Room, 5 ... Floor member, 5a ... Blowout hole, 6 ... Air supply chamber, 7 ... Ceiling member 7a ... Exhaust hole, 8 ... Exhaust chamber, 9 ... Air conditioner, 12
... tile carpet 13 ... carpet member, 16 ... backing layer

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoshio Tabe 1-2-1, Nihonbashihamacho, Chuo-ku, Tokyo Nitto Boseki Co., Ltd. (72) Inventor Yoshihisa Takebayashi 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Motoyuki Iwahashi 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Yoichi Haga 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Shinichi Futaki 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Tatsuo Nobe 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Hitoshi Ozawa 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Seiichi Shimamori 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd.

Claims (2)

[Claims] 1. The total area of the floor member disposed in the lower part of the chamber and the holes formed in the floor member is 1.5 of the total area of the floor member.
% Or more, a plurality of tile carpets laid on the floor member, an air supply chamber formed in the lower portion of the floor member, and an exhaust chamber formed in the upper portion of the chamber. An air conditioner connected to the air supply chamber, and 0.1 mm to 100 m per second from the air supply hole.
An air conditioner that supplies air to a room at a wind speed of m and controls the air temperature at the height of the feet of the occupants in the room to maintain a set value. 2. A tile carpet used in the air conditioner according to claim 1, wherein a backing formed by laminating a carpet member having air permeability and at least one of a mesh member, a gas permeable core material and a gas permeable base on the back surface thereof. When the air velocity passing through the supply air is a surface velocity of 1 cm / sec, the ventilation resistance is 0.
A tile carpet for air conditioning, which is 1 to 3.0 mmAq.