JPH03110342A - Gas blowing duct - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention "Field of Industrial Application" This invention is applicable to air conditioning equipment such as low-temperature work equipment, general cooling equipment, and general heating equipment in food processing plants, and clean air supply equipment in clean rooms. This invention relates to a blow-off duct member used for blowing gas indoors.

"Conventional Technology" Conventionally, in air conditioning equipment such as low-temperature work equipment, general cooling equipment, and general heating equipment in food processing plants, etc., each temperature-controlled supply gas is blown into the room from the opening of an air duct. The indoor temperature is adjusted to suit the room. Furthermore, this air duct is used not only for temperature control but also for air purification. For example, the cleanliness of a room is increased by attaching a dust filter or the like to the opening of the air duct.

FIGS. 8 and 9 are diagrams showing an example of a conventional air duct used for air conditioning or the like.

As shown in these figures, the conventional air duct 1 is a hollow rectangular box, and is composed of a space 4, air outlets 2, 2, . . . , and a support member 3. The space 4 communicates with a pneumatic pipe A connected to the air conditioner in the illustrated path, and the supply gas sent from the pneumatic pipe A to the space 4 is provided with openings along the side and bottom surfaces of the air duct. Several air outlets 2.2
It is supposed to be blown out from...

The support member 3.3 is a metal rod-shaped body, and is used to arrange the air duct 1 near the ceiling B by fixing one end to the ceiling B and the other end to the air duct I. It is.

The temperature of the gas taken in by the air conditioner is adjusted within the air conditioner and sent to the pneumatic pipe A, and further sent from the pneumatic pipe A to the air duct l. The gas sent to this air duct 1 is blown out into the room from the blow-off ports 2.2. Since the air duct 1 blows out the gas only from the blow-off ports 2, 2, . . . as shown in FIG. 9, the blowing direction is limited to a fixed direction.

``Problems to be Solved by the Invention'' By the way, in the air duct described above, the air outlet is provided along the side and bottom surfaces of the rectangular main body.
Temperature adjustment by blowing out gas from the air outlet is achieved by the gas flowing in a fixed direction. Therefore, a forced circulation system is used in which air is circulated to adjust the temperature, making it difficult to make the temperature distribution uniform throughout the room. This results in large temperature differences depending on location, which can easily cause dew condensation on ceilings, walls, etc.).

Furthermore, the gas blown out from the air outlet of the air duct may have a wind speed of approximately 3 m/s or more depending on the location. Workers located in such locations may experience discomfort due to the perceived temperature being significantly different from room temperature, which may impair their health. Also,
Strong blowing wind speeds cause dust adhering to floors, walls, equipment, etc. to be stirred up, which tends to cause air pollution, even if dust filters are installed on air conditioners or vents. Air pollution is likely to occur due to dust adhering to clothing, etc., and scattering of powder samples such as drugs.

Since such air ducts are made of metal plates and are large in size, their weight tends to damage the ceiling on which they are suspended, and they also take up a considerable amount of space.

Furthermore, this air duct tends to be unsanitary because it is difficult to remove and clean.

This invention was made in view of the above-mentioned circumstances, and is a gas blowing duct that makes the temperature distribution uniform throughout the room, hardly raises dust, etc., is easy to clean, and is lightweight and does not take up space indoors. The purpose is to provide

"Means for Solving the Problems" In order to achieve the above object, the gas blowing duct according to the present invention has an opening that opens into the indoor space on a mounting surface facing the indoor space, such as a ceiling surface or a wall surface. The above-mentioned problem was solved by burying a duct body with a woven fabric and covering the opening of the duct body with a woven or knitted fabric made of a fiber material.

"Function" The gas blowing duct blows out gas from the woven or knitted fabric covering the opening thereof, so that the gas is blown out at a low wind speed. Furthermore, since the main body of the gas blowing duct is buried in the mounting surface, the indoor space will not become narrow.

Hereinafter, the present invention will be explained in detail using the drawings.

Figures 1 to 3 show the gas blowing duct of the present invention (
This figure shows a first example of a duct (hereinafter referred to as a duct).

In the figure, reference numeral 11 indicates a mounting surface 11 such as a ceiling surface or a wall surface of a building. A long hole 12 having a rectangular planar shape is formed in this mounting surface 11 . A duct main body 13A is embedded and attached to this elongated hole 12.

This duct body 13A has a bottom portion 14, a wall portion 15°15,
It consists of a mounting plate part 16.16 and a fixing plate part 17, +7. The bottom part 16 consists of a rectangular plate,
Wall portions 15, 15 are integrally provided at both end portions, respectively, and an opening portion 18 having a U-shaped cross section and facing the indoor space is formed. This opening 18 is covered with a cloth 19. In addition, the wall portion 15. A pair of mounting plate portions 16 and a fixing plate portion 17 are provided in parallel on the outer surface of the tip portion of +5. Mounting plate part 16
The fixing plate portion 17 is a rectangular plate and is provided to protrude perpendicularly from the wall portion 15.

The mounting plate portion 16 is formed to be wider than the fixing plate portion 17, and mounting holes 20, 20, . . . are formed at predetermined intervals in the longitudinal direction thereof. Mounting holes (not shown) are also formed on the mounting surface 11 at predetermined intervals, and the bolts 21 are inserted by overlapping these mounting holes with the mounting holes 2020 of the fixed plate part 17. The duct main body 13A is fixed with a nut 22 and connected to the mounting surface 11 with bolts and nuts.

A cloth 19 covering the opening 18 of the duct body 13A
is a rectangle whose length in the longitudinal direction matches the length of the duct body, and whose two parallel sides are the ends 23 of the cloth.
．． 23 is inserted between the mounting plate part 16 and the fixing plate part 17, and the fixing members 24 and 24 are further inserted into the wall part 1.
5 and the mounting plate section 16 and fixing plate section 17.

The duct main body 13A is made of metal, plastic, plywood, etc., and the cloth I9 is made of natural fibers such as cotton, linen, polypropylene, nylon, polyester, acrylic, etc., with an opening of 0.1 μ+m to 200 μm. It is what it is.

As shown in FIG. 3, one end of the duct body 13 is connected to an air outlet 25 of a pneumatic pipe A connected to an air conditioner (not shown).
is connected to. From this pneumatic pipe A to the duct body +3A
When gas is supplied to the inner space 4 (FIG. 1), the introduction pressure of the supplied gas causes the opening 18 of the duct body 13A to open.
The cloth I9 provided on the cloth I9 swells, and the supplied gas is blown out from the surface of the cloth I9 at a low wind speed. At this time, the speed of the air blown from the surface of the cloth 19 is approximately 1 n/s or less, and is preferably set in the range of approximately 0.0 m/s to 1 m/s.

For ducts like this, the duct itself! Since the supplied gas is blown out from the entire surface of the cloth 19 of the opening 18 of 3A, even at low wind speeds, a large amount of gas is averaged over the entire indoor space and blown out for natural circulation. As a result, the temperature felt by the worker can be kept constant, and dust is not kicked up on the floor, walls, equipment, etc., reducing air pollution and making the temperature uniform throughout the room. The effect of preventing dew condensation on ceilings, walls, etc. can be obtained.

In addition, since the duct body 13A is buried in the elongated hole 12 and the cloth 19 only swells slightly on the indoor side,
The indoor space does not become narrow, and the beauty of the ceiling surface etc. is less likely to be spoiled.

Furthermore, since the cloth 19 is made of a woven or knitted fabric, it has a filtering effect due to its texture or stitches. Due to this filter effect, dust and the like in the gas can be removed.

In addition, since the cloth 19 is easy to remove, the duct body 1 can be cleaned by periodically removing and cleaning the cloth 19.
3A can be kept clean at all times.

4 to 7 show a second example of the duct of the present invention. Components that are the same as those in the first example are given the same reference numerals and their explanations will be omitted.

The duct body 13B in this example has a bottom part 14, a wall part 15.1
5 and a mounting member 31.31, the opening 18 of which is closed by a support 32 on which a cloth 19 is placed.

The mounting member 31 is made up of an upper surface 33, a lower surface 34, and a wall surface 35, and has a U-shaped cross section.
It is integrally provided on the outer surface of the tip portion of 5. Top surface 33
is formed wider than the lower surface 34, and the screw hole 36
．． 36... are formed at predetermined intervals. Then, the duct body 13B is fixed to the mounting surface 11 by overlapping screw holes (not shown) formed at predetermined intervals on the mounting surface 11 and screwing together screws (not shown). .

The support body 32 has an end portion 37° 37 made of a rectangular plate, a triangular joint plate 38° 38 arranged parallel to both ends of the end portions 37 and 37, and a portion between the vertices of the triangular joint plate 38. A first frame 39, a second frame 40,
It consists of a third frame 41.

As shown in FIGS. 4 and 6, the cloth 19 attached to the support body 32 has a rectangular shape, with sewing parts 23 on both sides in the longitudinal direction,
23 is superimposed on the end portion 3'1.37 of the support body 32, and the end portions 37, 37 are attached with glue, rivets, etc. so that the center portion in the longitudinal direction of the cloth 19 is in contact with the third frame 41. Fixed.

The end portions 37, 37 of the support body 32 are inserted and fixed together with the cloth 19 between the upper surface 33, the lower surface 34, and the wall surface 35 of the mounting member 31.

The supports 32, 32, on which the cloth 19 is stretched in this way...
As shown in FIG. 7, a plurality of holes are sequentially attached to the duct body 13B in the longitudinal direction of the elongated hole 12. Then, when gas is supplied from the pneumatic pipe A to the space 4 (FIG. 4) of the duct main body 13B, the introduction pressure of this supplied gas causes the cloths 19 stretched on the supports 32, 32... 19...
At this time, the shapes of the cloths 19, 19, etc. are defined by the first frame 39, second frame 40, and third frame 41 of the support body 33, and the gas blows out from these. The air is blown out at low wind speed from the spaces 42, 42, . . . surrounded by the frames 39, 40, 41.

Note that the gas blowing duct of the present invention can contribute to improving the working environment more easily than conventional air ducts. For example, the duct cloth 19 can be dyed to a color that matches the work environment, and the atmosphere of the work site can be changed by replacing the cloth 19 with a different color. Further, since it is possible to coat a single cloth of the duct with a bactericidal agent or an antifungal agent, it is possible to provide a duct having both a filter effect and a bactericidal effect to medical facilities and the like. Furthermore, in addition to disinfectants, it is also possible to coat with fragrances and deodorizers.

"Effects of the Invention" As explained above, the gas blowing duct of the present invention has
A duct body with an opening opening into the indoor space is embedded in a mounting surface facing an indoor space such as a ceiling or wall, and the opening of the duct body is covered with a woven or knitted fabric made of a fiber material. As a result, gas can be blown out at low wind speeds, making it possible to equalize the indoor temperature, keeping the temperature felt by workers constant, and not stirring up dust.

Furthermore, since the main body of the gas blowing duct is buried in the mounting surface, the indoor space will not become narrow.

In addition, since the fabric is lightly crushed and easy to install and remove, it is easy to clean woven or knitted items or replace woven or knitted items made of materials that suit the purpose, making it ideal for use in low-temperature work equipment in food processing plants, general air conditioners, etc. It can be suitably used in equipment, air conditioning equipment such as general heating equipment, clean air supply equipment in clean rooms, etc.

[Brief explanation of drawings]

1 and 2 show a first example of the gas blowing duct of the present invention, in which FIG. 1 is a sectional view, FIG. 2 is a perspective view for explaining the assembled state of FIG. 1, and FIG. Figure 3 is the first
FIGS. 4 to 6 show a second example of the gas blowing duct of the present invention, and FIG. 4 is a cross-sectional view. , FIGS. 5 and 6 are perspective views of the components of FIG. 4,
Fig. 7 is a plan view showing an example of how the second example of the gas blowing duct is attached to the pneumatic pipe, Figs. 8 and 9 show conventional air ducts, and Fig. 8 is a perspective view; FIG. 9 is a schematic side view illustrating the direction in which air is blown out. ... Mounting surface, 2... Long hole, 3A, 1 B... Gas blowing duct member, 8... Opening, 9... Cloth (woven or knitted fabric).

Claims (1)

[Claims] A duct body with an opening opening into the indoor space is buried in a mounting surface facing an indoor space such as a ceiling or wall, and the opening of the duct body is covered with a woven or knitted fabric made of a fiber material. A gas blowing duct featuring