JPH03110343A - Gas blowing duct member - Google Patents

Abstract

PURPOSE:To make a uniform temperature distribution within an entire room and facilitate a cleaning operation while reducing dusts or the like by a method wherein a fabric material of fibrous material is formed into a hollow cylinder and a gas blowing duct member is constructed in such a way as it may be extended or retracted along its axis. CONSTITUTION:A main body 2 of a duct member 1 is a hollow cylinder made of fabric such as cotton or the like. Its end is closed in a dome-like shape, and the other end is opened to have an opening. After this duct member 1 is mounted at wires D and D tensioned at a ceiling B, an air conditioning facility is driven so as to supply gas from the opening in the duct member 1, resulting in that the duet member 1 is bulged out through a feeding-in pressure of this gas, and the duct member 1 is extended or retracted along the wires D and D. When the gas is blown out, a woven seam of the main body 2 becomes a filter and dusts in the gas or the like can be removed. When this duct member 11 is stained, the duct member 1 is removed from the wires D and D, a regular cleaning of the duct member 1 enables the duct member 1 to be always kept clean.

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.

FIG. 18 and FIG. 19 are diagrams showing an example of an air duct used for conventional air conditioning or the like.

As shown in these figures, the conventional air duct IO is a hollow rectangular box with a ventilation passage 11, ventilation ports 12, 12, . . .
, and a support member 13.13.

The ventilation passage 11 communicates with a pneumatic pipe A connected to an air conditioner in the illustrated path, and the supply gas sent from this pneumatic pipe A to the ventilation passage 11 is passed through openings along the side and bottom surfaces of the air duct 10. The air is blown out from several air outlets 12, 12... provided in the air.

The support member 13.13 is a metal rod-shaped body, and is used to arrange the air duct 10 near the ceiling B by fixing one end to the ceiling B and the other end to the air duct 10. It is.

The gas taken in by the air conditioner is temperature-adjusted within the air conditioner and sent to the pneumatic pipe A, and further sent from the pneumatic pipe A to the air duct IO. The gas sent to this air duct 10 is blown out into the room from the ventilation ports 12, 12, . . . . Gas is blown out by the air duct IO only from the air blowing ports 12, 12, .

``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. As a result, there is a large temperature difference depending on the location, which means that condensation is likely to occur 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 temperature being significantly different from room temperature, which may impair their health. In addition, strong wind speeds cause dust adhering to floors, walls, equipment, etc. to be stirred up, which tends to cause air pollution, even if a dust filter is installed on the air conditioner or ventilation opening. Air pollution is also likely to occur due to dust adhering to clothing, etc., and scattering of powder samples such as drugs.

Furthermore, since such air ducts are made of metal plates, their weight tends to damage the ceiling on which the air ducts are suspended. Furthermore, it is difficult to remove and clean the air duct, which tends to be unsanitary.

This invention was made in view of the above-mentioned circumstances, and its purpose is to create a lightweight gas blowing duct member that can uniformly distribute the temperature throughout the room, is less likely to stir up dust, etc., is easy to clean, and is lightweight. It provides:

"Means for Solving the Problems" In order to achieve the above object, a gas blowing duct member according to the present invention is formed by forming a woven or knitted fabric made of a fiber material into a hollow cylindrical shape, so that it can expand and contract along its axis. By doing this, the above problem was solved.

"Operation" When gas is supplied to the above gas blowing duct member from its opening, the gas blowing duct member expands and expands due to the introduction pressure of this gas, and as the internal pressure increases, the entire circumference of the gas blowing duct member Gas is blown out from the surface at low wind speed.

The present invention will be explained below based on examples.

Embodiment FIGS. 1 to 4 show an embodiment of a gas blowing duct member (hereinafter referred to as duct member) of the present invention.

This duct member 1 includes a main body 2, a connecting part 3, a household 4.4...
It is composed of.

The main body 2 is a hollow cylindrical piece made of a woven or knitted fabric with an opening of 0.1 μm to 200 μm made of natural fibers such as cotton or hemp or synthetic fibers such as polypropylene, nylon, polyester, or acrylic, and its end is dome-shaped. It is closed at one end and has an opening at the other end. A fastener 5 is provided at the edge of this opening, and the connecting portion 3 is connected to the main body 2 by this fastener 5.

The size of the main body 2 is such that the diameter of the opening is approximately 100 to 10 mm.
It is desirable that the length be within the range of up to 00 mm, and the length be within the range of approximately 4 to 10 m.

The connecting part 3 is a hollow cylindrical woven or knitted fabric for connecting the main body 2 to the nozzle C of the pneumatic pipe A, and one frontage part is attached to the nozzle C of the pneumatic pipe A using a fixing band E. The other opening is connected to the main body 2 via a fastener 5.

Household 4.4... is a belt-shaped woven or knitted fabric, which is formed into a ring shape with both ends along the elongated direction aligned, and both ends of which are aligned along the axis of the main body 2 and placed around both sides of the main body 2. They are fixed one by one on the surface at regular intervals. This household 4
．． 4. The main body 2 can be installed on the ceiling by passing the wires D and D stretched across the ceiling.

In this case, since the households 4, 4, .

In addition, in order to allow the main body 2 of the duct member 1 to expand and contract more smoothly, the main body 2 is attached to a locking piece that can freely slide on a rail provided on the ceiling. You can also.

For example, the duct member 1 shown in FIGS. 5 to 8 is
It consists of a main body 2, a connecting portion 3, a ring-shaped support 6.6, and hooks 7.7.

The ring-shaped supports 6.6 are made of hollow cylindrical members, and have their circumferential surfaces in contact with the inner circumferential surface of the duct member 10 main body 2, and their axes are aligned with the inner circumferential surface of the duct member 10 main body 2.
They are attached to the inside of the main body 2 at regular intervals by a method such as sewing along the axis of the main body 2. Also, hooks 7.7 are provided on the circumferential surface of the ring-shaped support 6.6.
... are erected, and these hooks 7, 7, ... are protruded from the upper surface of the duct member 1. This hook 7.7・
... are the locking pieces f, f... of the rail F installed on the ceiling.
By hanging the duct member 1 on the rail F, the duct member 1 can be expanded and contracted along the rail F.

In this example, a hook 7.7 is attached to the inside of the main body 2 of the duct member 1.
By attaching the ring-shaped support 6.6 having..., the duct member 1 is less likely to lose its shape due to expansion and contraction, and the duct member 1 can be easily expanded and contracted.
Ru.

Next, a method of using the duct member of the present invention will be described with reference to FIGS. 9 to 11.

First, the material and size of the duct member 1 are selected depending on the location where it will be used.

The material of the duct member 1 should be synthetic fibers such as polypropylene, nylon, polyester, or acrylic in places with relatively high humidity or where concentrated chlorine solutions are used as a disinfectant for cleaning or preventing contamination. good. In addition, duct members made of natural fibers such as cotton and hemp,
Since it produces fuzz, it cannot be used in rooms where a high degree of cleanliness is required. Therefore, the material of the duct member 1 is made of synthetic fiber as mentioned above to prevent fuzz,
By adjusting the density of the openings, it is possible to obtain a filter effect that corresponds to the cleanliness of the room.

Next, the number of duct members 1 and the length of each duct member are determined by taking into account the volume of the room, the capacity of the air conditioning equipment, etc. In this case, in order to ensure that the supply gas from the air conditioner is sent uniformly throughout the room, the minimum distance between the duct members attached to the pneumatic pipe A is four times the diameter of the opening of the duct member 1. , the minimum distance between the wall of the room and duct member 1 is duct member 1
3 times the diameter of the opening.

The diameter of the opening of this duct member 1 is defined as the capacity of the gas (trailing gas capacity) that is circulated in the room by the air conditioner.
and the wind speed of the supplied gas at the opening of nozzle C to the pneumatic pipe. The size of the duct member 1 also changes depending on the amount of gas flowing into the duct member 1 and the internal pressure, so it is necessary to set the size in consideration of these changes.

The duct member 1 selected in this manner is connected to the pneumatic pipe, and the main body 2 of the duct member 1 is installed at a position on the ceiling B that is provided depending on the work environment.

The duct member 1 installed on the ceiling B can blow out gas from the entire circumferential surface of the duct member 1 by operating an air conditioner. The air volume blown from the surface of the duct member 1 is about 1 m/s or less, preferably about 0.0 m/s or less.
It is desirable to set it within a range of 0.01 to 0.1a+/s.

For example, room (length x width x height = 15 x 8 x 4 m
) The circulating gas capacity of the supplied gas from the air conditioner required to keep the temperature constant is 13.500 m'/h, and the wind speed of the supplied gas at the opening/mouth of nozzle C of pneumatic pipe A is approximately 8 m'/h. /s will be explained.

Based on the above-mentioned circulating gas capacity and wind speed, the material of the duct member 1 is pure cotton, the length is about 10 m, and the diameter of the opening is about 5 m.
00mm duct member 1 as shown in Fig. 9.
Three can be attached to.

This installation can be easily done by aligning one side of the fastener at the opening of the duct member 1 with the one side of the fastener at the opening of the joint 3 fixed to the /zuru C with the fixing band E, and closing this fastener 5. It will be done.

Next, in order to install this duct member 1 on the wires D and D stretched on the ceiling B, the duct members 1 are installed at intervals of about 500 mm along the axis as shown in FIGS. 2 and 3. Household 4. Pass wires D and D through 4...

At this time, if the duct member 1 is contracted as shown in FIG. 4, it will be easier to pass the wires D and D through.

After the duct member 1 is installed on the wires D and D in this manner, the air conditioning equipment is driven to cause gas to flow into the duct member 1. When gas is supplied from the opening of this duct member 1, the duct member swells due to the introduction pressure of this gas.
In addition, the duct member 1 extends along the wires D and D.

Also, due to the introduction pressure of this gas, the internal pressure applied to the duct member 1 is 60° higher than the pressure applied from the outside of the duct member 1.
~180pa (6-18mm/1g) is very high.

With this increase in internal pressure, approximately 286 m'/h of air can be blown out from the entire circumferential surface of the duct member 1 per 1 m 2 of its surface area. As shown in FIG. 11, the amount of air blown out increases in proportion to the increase in pressure within the duct member 1, so the amount of gas blown out can be easily adjusted by adjusting the internal pressure of the duct member 1. can. Further, since the duct member 1 is made of pure cotton fabric, the texture of the main body 2 acts as a filter to remove dust and the like from the gas when blowing out the gas.

An example of how to install this duct member 1 on the ceiling is shown in FIGS. 12 to 17.

In the example shown in FIGS. 12 to 14, plate members A and B are provided on both sides of the duct member 1 along the axial direction. Therefore, when the duct member 1 is expanded or contracted, the plate members A and B serve as a blindfold, so that the duct member 1 is not unsightly. Furthermore, the duct member 1 can be hidden by attaching the filter member G to the opening of the U-shaped cross section formed by the two plate members S, b and the ceiling B. When this duct member 1 is not used, the main body 2 is connected to the pneumatic pipe A along the wires D and D.
It can be compressed to the side and stored in storage H.

Next, in the example shown in FIGS. 15 to 17, ceiling B
Since the duct member 1 is attached to the recess provided in the room, the space in the room can be used effectively. In addition, the filter member G is attached to the opening of the recess, and the duct member 1
You can also hide it. When the duct member 1 is not used, the main body 2 can be compressed toward the pneumatic pipe A side along the wires D and D and stored in the storage F.

Moreover, if this duct member l is dirty, it can be removed from the wires D and D and cleaned. By cleaning regularly, the duct member 1 can be kept clean at all times.

Furthermore, the gas blown out from the duct member 1 is at a low velocity,
And because it circulates naturally, it does not stir up dust adhering to floors, walls, equipment, etc., reducing air pollution, equalizing the temperature throughout the room, and preventing condensation on ceilings, walls, etc. can get.

Note that the duct member of the present invention can contribute to improving the working environment more easily than conventional air ducts. For example, duct members can be dyed in a color that matches the work environment, and the atmosphere of the work site can be changed by replacing duct members with different colors. Further, since the duct member can be coated with a bactericidal agent or a fungicide, it is possible to provide a duct member that has both a filtering effect and a sterilizing effect to medical facilities and the like. 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 member of the present invention is made of a woven or knitted fabric made of fiber material formed into a hollow cylindrical shape and is expandable and contractible along its axis. When gas is supplied from the opening of the duct member, the main body of the gas blowing duct member expands due to the introduction pressure of this gas and can be expanded along its axis. Gas is blown out at low wind speeds from all around the surface, making it possible to even out the temperature distribution in the room, keeping the temperature felt by workers constant, and not kicking up dust, etc., and being lightweight and easy to install. Since it is easy to remove and clean, the duct components can be easily cleaned and replaced with duct components made of materials suitable for the purpose, so they can be used for low-temperature work equipment, general cooling equipment, general heating equipment, etc. in food processing plants. It can be suitably used in air conditioning equipment, clean air supply equipment in clean rooms, and the like.

[Brief explanation of drawings]

1 to 4 are views for explaining one embodiment of the gas blowing duct member of the present invention, in which FIG. 1 is a perspective view, FIG. 2 is a bottom view, and FIG. 3 is a side view. FIG. 4 is a side view showing the main body in a compressed state, and FIGS. 5 to 8 are views for explaining a second embodiment of the present invention.
The figure is a perspective view, FIG. 6 is a top view, FIG. 7 is a side view, FIG. 8 is a side view showing the main body in a compressed state, FIG. 9 is a configuration diagram of an air conditioner using the present invention, and FIG. Figure 1O is a schematic front view for explaining the direction of air blowing out, Figure 11 is a graph showing the relationship between the internal pressure and the amount of gas blown out according to the present invention, and Figures 12 to 14 are diagrams showing the direction in which air is blown out to the ceiling. FIG. 12 is a partially sectional perspective view, FIG. 13 is a front view, FIG. 14 is a bottom view, and FIGS. 15 to 17 are diagrams for explaining an example of attachment of the present invention to a ceiling. FIG. 15 is a perspective view, FIG. 16 is a front view, FIG. 17 is a bottom view, and FIGS. 18 and 19 are views for explaining a second example of installation. FIG. 1 is a diagram for explaining the first
FIG. 8 is a perspective view, and FIG. 19 is a schematic front view illustrating the direction in which air is blown out. ■・・・・・・Gas blowing duct member, 2・・・・・・
・Main body, 3...Joint part, 4...Household,
7...Hook.

Claims (1)

[Claims] A gas blowing duct member characterized in that a woven or knitted fabric made of a fiber material is formed into a hollow cylindrical shape and is expandable and contractable along its axis.