JPH0297843A - Air conditioning duct - Google Patents

Abstract

PURPOSE:To improve acoustic absorption effect and prevent deformation by forming an air conditioning duct with an acoustic absorption material, covering the lower part with a support member which has a ceiling function with a large number of small holes, and installing a pendant metal fitting to said support member. CONSTITUTION:A duct 31 is formed by an acoustic absorption member made of glass wool, and its lower part and side parts are covered with a support member 33, which comprises metal sheets and plays the role of a ceiling function of a building. The support member 33 which has a large number of small holes on its lower part, is formed in U shape in cross section. Its both ends are inwardly fold, thereby forming a flange 35 to which two pendant metal fitting 36 are welded respectively. A fixed metal fitting 38 is inserted into the pendant metal fittings 36 respectively. When the duct 31 is lowered to a slab with the pendant metal fittings 36, a noise from a music hall or the like enters the duct 31 effectively and the noise can be satisfactorily absorbed. Furthermore, the support member 33 supports the entire lower part of the duct 31, which makes it possible to prevent the deformation of the duct 31 without fail.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air conditioning duct, and for example, to an air conditioning duct used in music halls, cultural halls, hotels, office buildings, etc.

[Conventional technology]

Recently, air conditioning ducts made of sound-absorbing materials with sound-absorbing properties have been used in music halls, cultural halls, hotels, office buildings, etc. to maintain a quiet environment (for example,
(Refer to “Air Conditioning and Sanitary Engineering” Vol. 62, No. 5, p. 31).

FIG. 9 shows such an air conditioning duct, and reference numeral 11 indicates a rectangular flat duct for supplying and exhausting air. This duct 11 is made of a sound absorbing material made of glass wool.

Support members 13 having a U-shaped cross section are arranged at predetermined intervals on the lower surface of the duct 11.
Both ends of are fixed to fixing fittings 15 fixed to the slab,
A duct 11 is fixed to the slab.

In the air conditioning duct formed in this way, the duct 11 is placed between the slab and the ceiling surface of a music hall, etc., and the conditioned air flows through the duct ll, so that the duct 11 is arranged between the slab and the ceiling of a music hall, etc. In addition to being able to perform air conditioning,
Noise generated in a music hall or the like is absorbed by the duct 11 made of glass wool, making it possible to realize a quiet environment required in a music hall or the like.

[Problem to be solved by the invention]

However, in such conventional air conditioning ducts, the lower surface of the duct 11 is supported at predetermined intervals by the support members 13 and suspended from the slab, so the duct 11 made of glass wool is easily deformed and the support Member 13
There is a problem that the duct 11 between the two is bent or the support member 13 digs into the duct 11 due to the weight of the duct 11.

In addition, since the duct 11 was placed between the slab and the ceiling surface, there was a problem that noise generated in music halls etc. was reflected on the ceiling surface and the duct 11 was unable to absorb the noise sufficiently. was there.

The present invention has been made in order to solve the above-mentioned problems, and provides an air conditioning duct that can improve the sound absorption effect of the duct and can prevent deformation of the duct and support it reliably. The purpose is to

[Means to solve the problem]

In the air conditioning duct according to the present invention, the duct for supplying and exhausting air is formed of a sound-absorbing material, and at least the lower surface of the duct is covered with a holding member that has a large number of small holes and has a ceiling function of a building. In addition, hanging fittings for hanging the holding member from the slab are arranged.

[For production]

In the present invention, since at least the lower surface of the duct is covered with the holding member in which a large number of small holes are formed, when the holding member is suspended from the slab using the hanging metal fittings, the holding member can be opened from the small holes of the holding member, for example, in a music hall. These noises enter a duct made of sound-absorbing material and are absorbed by the duct.

Moreover, since at least the lower surface of the duct is covered by the holding member in which a large number of small holes are formed, when the holding member is suspended from the slab by the hanging fitting, the entire lower surface of the duct is supported by the holding member.

(Example) Hereinafter, an example in which details of the present invention are shown in the drawings will be described.

FIG. 1 shows an embodiment of an air conditioning duct 30 of the present invention, and reference numeral 31 indicates a rectangular flat duct for supplying and exhausting air. This duct 31 is made of a sound absorbing material made of glass wool.

The lower and side surfaces of the duct 31 are covered with a holding member 33 made of a metal plate and having the function of a ceiling of a building.

As shown in FIG. 2, this holding member 33 has a U-shaped cross section, and both ends thereof are bent inward to form a flange 3.
5 is formed. Two hanging fittings 36 are fixed to each of these flanges 35 by welding or the like. These hanging fittings 36 are formed in a concave shape, and a through hole 37 is formed in the upper surface thereof.

As shown in FIG. 1, a fixing fitting 38 made of a steel rod fixed to the slab is inserted into the through hole 37 of the hanging fitting 36, and a nut is screwed onto the tip of the fixing fitting 38, so that the hanging fitting 36 can be suspended. A metal fitting 36 and a fixing metal fitting 38 are connected, and the duct 31 is suspended from the slab.

A large number of small holes 39 are formed on the lower surface of the holding member 33 by, for example, a punching press.

In the air conditioning duct 30 configured as described above, conditioned air is circulated through the duct 31, and air conditioning of a music hall or the like is performed, for example.

In this embodiment, the lower surface of the duct 31 is covered with the holding member 33 in which a large number of small holes 39 are formed.
Through the small hole 39 of the holding member 33, noise from a music hall, for example, enters the duct 31 made of glass wool, and is absorbed by the duct 31.

Furthermore, since the lower surface and side surfaces of the duct 31 are covered by the holding member 33, when the holding member 33 is suspended from the slab using the hanging fittings 36 and the fixing fittings 38, the entire lower surface of the duct 31 is supported by the holding member 33. be done.

That is, in the air conditioning duct 30 configured as above,
Since the lower surface and side surfaces of the duct 31 are covered by the holding member 33 having a large number of small holes 39 formed on the lower surface, for example, when the duct 31 is suspended from a slab using the hanging fittings 36 in a music hall, etc. The noise effectively enters the duct 31 made of glass wool through the small hole 39 of the holding member 33, and the noise can be sufficiently absorbed by the duct 31, thereby reliably realizing the quiet environment required in music halls and the like. be able to.

Further, the lower surface and side surfaces of the duct 31 are covered with a holding member 33, and this holding member 33 is attached to a hanging fitting 36 and a fixing fitting 38.
Since the duct 31 is fixed to the slab via the holding member 33, the entire lower surface of the duct 31 is supported by the holding member 33, and the duct 31 made of glass wool can be reliably prevented from being deformed and the duct 31 can be supported.
1 protection and reinforcement can be performed. Furthermore, the lower surface of the holding member 33 can also be used as a ceiling finishing surface to satisfy the aesthetic effect, and there is no need to install new ceiling material (which is economical and reasonable).

In addition, since the duct 31 is made of glass wool, the heat insulating function of the glass wool allows the conditioned air in the duct 31 to be circulated while maintaining the temperature of the conditioned air without being affected by the outside temperature of a music hall or the like. , air conditioning can be performed efficiently.

In the above embodiment, the flanges 35 at both ends of the holding member 33
Although an example has been described in which two hanging metal fittings 36 are arranged on each of the flange 35 at both ends of the holding member 33, the present invention is not limited to the above embodiment. Installation, this hanging bracket 3
6, the same effect as in the above embodiment can be obtained by screwing a fixing fitting 38 fixed to the slab.

Further, in the above embodiment, an example in which a large number of small holes 39 were formed on the lower surface of the holding member 33 was explained, but the present invention is not limited to the above embodiment, and the lower surface and side surface of the holding member 33 are Even if a large number of small holes 39 are formed, the same effect as in the above embodiment can be obtained.

FIG. 3 is a plan view showing a system ceiling 41 constructed using the air conditioning duct 30 configured as described above. In the figure, a system ceiling 41 is constructed by connecting a large number of air conditioning ceiling panel units 43.

This air conditioning ceiling panel unit 43 uses the above-mentioned air conditioning duct 30 as an air supply duct 45 that supplies air and a return/exhaust duct 47 that returns or exhausts air. As shown in FIG. 4, the exhaust ducts 47 are arranged in parallel at predetermined intervals.

These air supply ducts 45 and return/exhaust ducts 47 are formed into rectangular flat shapes, and as shown in FIG.
The holding member 33 formed with a large number of ducts 45.4
The lower and side surfaces of 7 are covered.

As shown in FIG. 4, two hanging fittings 36 are fixed to each flange 35 of the holding member 33, and the duct 4
5.47 hanging fittings 36 are connected by reinforcing members 48.

Moreover, between the supply air duct 45 and the return/exhaust duct 47,
A connecting member 49 having a U-shaped cross section is arranged, and its contact portion is fixed by, for example, welding.

Furthermore, the air supply duct 45. The lower surfaces of the return/exhaust duct 47 and the connecting member 49 are finished to have a sufficient aesthetic appearance as a ceiling surface.

As shown in FIG. 5, in the center of the connecting member 49, a chamber 53 is formed by partitioning the connecting member 49 with a partition plate 51, and the lower surface of this chamber 53 is open. A baffle plate 55 is disposed in the room 53, and a fan 57 is disposed on the baffle plate 55 to blow out the conditioned air flowing through the air supply duct 45 into the room.

As shown in FIG. 6, the room 53 in which the fan 57 is housed and the air supply duct 45 are connected by a connecting member 49. Holding member 33. The air supply duct 45 is communicated with through an air outlet 59 passing through the air supply duct 45 .

In addition, on the side surface of the return/exhaust duct 47 on the connecting member 49 side,
As shown in FIG. 7, a suction port 61 through which the conditioned air blown into the room by the fan 57 and circulated inside the room is connected to the connecting member 49. It is formed to penetrate the holding member 33 and the return/exhaust duct 47.

Furthermore, a ceiling equipment 62 made of a lighting fixture is arranged on the connecting member 49.

As shown in FIG. 3, the air conditioning ceiling panel units 43 formed in this way are connected so that the supply air ducts 45 and the return/exhaust ducts 47 communicate with each other, so that the system ceiling 41 It is formed.

Note that an air conditioner 65 is disposed in a core part 63 of an office in an office building or the like, and a header duct 67 is connected to this air conditioner 65. This header duct 67 is
As shown in FIG. 8, an air supply header duct 71 is placed on an exhaust header duct 69. The air supply header duct 71 and the air supply duct 45 of the air conditioning ceiling panel unit 43 are in communication, and the exhaust header duct 69 is in communication with the return/exhaust duct 47 of the air conditioning ceiling panel unit 43.

The ceiling panel unit 43 is suspended from the slab by fixing fittings 38 made of steel rods.

In the system ceiling 41 configured as described above, the conditioned air supplied from the air conditioner 65 is supplied to the air supply duct 45 of each air conditioning ceiling panel unit 43 via the air supply header duct 71, and the connecting member The air is blown into the room by a fan 57 provided at 49.

The conditioned air blown into the room circulates inside the room and
1, the air is exhausted to a ladder duct 69 for exhaust through a return/exhaust duct 47, and the room is air-conditioned.

Also in the system ceiling 41 configured as above,
The same effects as the air conditioning duct 30 shown in FIG. 1 can be obtained.

In addition, in such a system ceiling 41, the air conditioning duct 3
0 was used to form the ceiling panel unit 43, and the system ceiling 41 was formed using this ceiling panel unit 43, so the air conditioning duct 30 was formed at the same time as the ceiling was formed, resulting in significant labor savings in air conditioning duct construction work. can be achieved.

Furthermore, since the entire ceiling is formed by the air conditioning duct 30, noise generated in, for example, a music hall can be effectively muffled.

〔Effect of the invention〕

As described above, in the air conditioning duct of the present invention, the duct for air supply and exhaust is formed of a sound-absorbing material, and at least the lower surface of the duct is covered with a holding member having a large number of small holes and functioning as the ceiling of the building. , to this holding member,
We have placed a hanging metal fitting to hang the holding member on the slab, so when it is hung on the slab using the hanging metal fitting, the noise from music halls etc. will be absorbed through the small hole formed in the holding member into a duct made of sound absorbing material. The sound absorption effect of the duct can be improved, and since the entire lower surface of the duct is supported by the holding member, deformation of the duct can be reliably prevented.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an air conditioning duct according to the present invention. FIG. 2 is a perspective view showing the holding member of FIG. 1. FIG. 3 is a plan view showing an example of a system ceiling constructed using the air conditioning duct shown in FIG. FIG. 4 is a perspective view showing the air conditioning ceiling panel unit of FIG. 3. FIG. 5 is a perspective view of the air conditioning ceiling panel unit shown in FIG. 4, viewed from the back side. FIG. 6 is a cross-sectional view taken along the line Vl--Vl in FIG. 4. FIG. 7 is a cross-sectional view taken along the line ■--■ in FIG. 4. FIG. 8 is an enlarged perspective view of the header duct shown in FIG. 3 and its vicinity. FIG. 9 is a perspective view showing a conventional air conditioning duct suspended from a slab. [Explanation of symbols of main parts] 30...Air conditioning duct 31...Duct 33...Holding member 36...Hanging fitting 39...Small hole. Figure Figure 39 (Notojishi L)

Claims (1)

[Claims] (1) A duct for air supply and exhaust is formed of a sound-absorbing material, and at least the bottom surface of this duct is covered with a holding member that has many small holes and functions as the ceiling of a building, and the holding member is attached to a slab. An air conditioning duct characterized by having hanging fittings arranged for hanging the air conditioning duct.