JPH019669Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention relates to an air shower device that uses purified air to blow away dust adhering to the body, clothes, and other objects, and is mainly used in operating rooms and in the manufacturing of integrated circuits. It is used by installing it at the entrance of a clean room in an environment where dust in the air is removed, such as a clean room.

"Prior Art" A conventional device of this type will be explained with reference to FIGS. 7 and 8.

Reference numeral 1 designates an air shower room, and one side thereof is provided with a door 11, and the side facing this door 11 is open and a door a1 on the clean room side is provided.

Side ducts 2, 2 are provided on the other opposite sides of the room 1, and a ceiling duct 3 communicating with the side ducts 2 is provided in the upper part of the room 1.

A fan 31 is attached to one end of the ceiling duct 3, and the operation of this fan 31 opens the air intake ports 21 formed in the front surface of each side duct 2.
Air is sucked into the duct 2 from the lower part of the side wall 25 of the room 1, and the air is purified by the high-performance main filter 22, passes through the small duct 23 in the duct 2, reaches the ceiling duct 3, and enters the ceiling duct. The direction of the air is changed downward by a wind direction plate 32 provided at the center of the air shower room 3, and the air is blown out as an air jet into the air shower room 1 through a hole 33 made in the ceiling.

A part of the air blown into the room 1 from the ceiling duct 3 is supplied to the dust box in the duct 2 through the suction hole 28 formed in the upper part of the side wall 25 by the operation of the fan 27 provided at the upper part of the duct 2. 29, and is blown into the air shower room 1 at high speed from a plurality of round air jet nozzles 4 provided on the side wall 25 of the room 1. The air blown into the room 1 from the nozzle 4 is sent to the side wall 25 together with the air blown out from the ceiling.
It circulates through the above-mentioned path via a pre-filter 26 such as a nylon non-woven fabric provided at the bottom of the main filter 22 .

The device uses an air jet blown downward from the ceiling and an air jet blown from the nozzle 4 to blow off dust adhering to people or objects in the room 1, and also blows off dust attached to the bottoms of shoes and other objects. The dirt adhering to the room 1 is adsorbed and removed by a gelatin mat 12 spread on the floor of the room 1.

``Problems that the invention attempts to solve'' Conventional air shower devices have nozzles 4 on the side wall.
are scattered, and since there are gaps between the air jets blown out from each nozzle 4, it is easy for floating dust to rise upward from these gaps, and the floating dust that flies up in this way can be blown away. Therefore, as mentioned above, a structure is required to blow out air from the ceiling.

However, a structure that blows air out from the ceiling in addition to blowing out air from the side walls is
Since installation space for ducts and special fans are required in the ceiling, there are problems in that equipment costs are high and space utilization efficiency is reduced.

An object of the present invention is to provide an air shower device that improves the above-mentioned drawbacks.

``Means for Solving the Problems'' In order to achieve the above-mentioned purpose, the present invention provides air jet nozzles that are continuous and inclined when viewed from inside the air shower room, and are arranged at predetermined intervals in the vertical direction. The air outlet of each nozzle is formed in the shape of a continuous long and narrow slit, and the air blown out from the air outlet is configured to form a curtain shape.

``Function'' The device of the present invention has air jet nozzles that are continuous at an angle and are provided at predetermined intervals in the vertical direction, and the nozzle outlet is formed in the shape of a continuous elongated slit, so that the air jet is shaped like a curtain. The air is blown out from each outlet, and this curtain-like air jet blows away dust and dirt adhering to people and objects.

Further, since the air jet is formed in a curtain shape, floating dust below the air jet is effectively prevented from flying up. Therefore, a mechanism for blowing out air from the ceiling is not required.

Furthermore, since the nozzle with the elongated air outlet is slanted, the position of the air jet changes when people or objects move within the air shower room.

"Embodiment" Figures 1 to 3 show an embodiment of the air shower device according to the present invention, where 1 is an air shower room, 11 is a door of room 1, a1 is a door on the clean room a side, door 11 and a1
A glass window or acrylic window b is attached to the upper part of the window. Further, on the floor of the room 1, a dust removal mat 13, such as a gelatin mat, is placed to remove dust by adsorption.

A duct box 5 is provided on both sides of the room 1, and an air intake port 5 is provided in the lower part of the box 5.
1. High performance main filter 50 and fan 6
is installed.

The side wall 52 of the air shower room 1, which constitutes a part of the duct box 5, has a continuous elongated slit-shaped outlet 71, and an appropriate number of nozzles 7 for air jets that communicate with the inside of the duct box 5. Prefilters 53 are provided at predetermined intervals in the vertical direction while being inclined in one direction when viewed from inside the room 1, and further below the prefilters 53, which are made of nylon nonwoven fabric and are made of electrostatic precipitators, are installed which communicate with the duct box 5. .

The air jet nozzle 7 is preferably constructed such that its blow-off port 71 can be changed in angle diagonally up and down.

In this embodiment, as shown in an enlarged view in FIG. Forming a nozzle 7 with an end plate 76,
The sliding contact plates 72, 72 are attached to the upper and lower edges of the mounting opening of the groove-shaped recess 54 formed in the side wall 52 of the room 1.
A guide 73 with an arcuate cross section that slides into contact with the nozzle 7 is attached by a bracket 74, and one of the sliding contact plates 72 is lightly pressed from the outside of the one guide 73 with a set screw 75 to prevent the nozzle 7 from moving. 3
As shown by the two-dot chain line in the figure, the air outlet 71 is configured to be able to change its direction by about 45 degrees diagonally up and down. The bracket 74 is fixed to the back side of the side wall 52 of the room 1 by riveting or welding.

The side wall 52 of the room 1 is configured such that the part where the prefilter 53 is attached and the part where the nozzle 7 is attached can be separated, and the upper part where the nozzle 7 is attached is Configured to be interchangeable.

In the air shower device of the above embodiment,
By the operation of the fan 6, external air from the air intake port 51 and air inside the air shower room 1 are sucked into the duct box 5 from the pre-filter 53, and the air is purified by the main filter 50. The air outlet 71 of each nozzle 7
The air is blown out into room 1 at a predetermined angle, and the air blown out into room 1 is passed through prefilter 5.
3. It circulates through the main filter 50.

In the air shower device of this embodiment, the air outlet 71 of the nozzle 7 is located at an appropriate position depending on the height of the person entering the air shower room 1, the height of objects, and the size of the object.
Tilt it downwards as appropriate.

For example, in the case of a person, as shown in FIG.
When used with air jets 2, d3, and d4 each hitting a desired part of the human body c, each of the air jets d1 to d4 blown out from the continuous slit-like air outlet 71 becomes like a curtain, and the circulation causes damage to the human body. It flows downward along c and efficiently blows off the dust adhering to the human body c. Moreover, since each nozzle 7 on the side wall is inclined, when the human body c moves (back and forth direction in FIG. 6), the position where each air jet d1 to d4 hits gradually changes.
This further enhances the dust removal effect.

Since each air jet d1 to d4 is formed in a curtain shape, each air jet d1 to d4 is
The dust floating below d4 is prevented from rising upward from the air jet, is sucked downward along the air flow, and is captured by the filters 53 and 50.

In this way, since there is no need for a structure for blowing air from the ceiling, it can be installed at a lower cost, and the space can be used more efficiently.

In the present invention, in addition to the case where the nozzle 7 is provided inclined in a certain direction as in the above embodiment,
As illustrated in FIG. 4, the side wall 52 may be provided in a mountain shape that slopes from the center to both sides, or may be provided in the reverse direction of FIG. 4, or the adjacent upper and lower nozzles 7 in FIG. It can also be implemented by providing them so as to be inclined in opposite directions.

Further, although the air shower device of the above embodiment is provided with a duct box 5 and a nozzle 7 on both sides of the room 1, these may be attached only to one side wall depending on the place of use. Also, depending on the situation at the installation site, as shown in Figure 5, the door a1 of the clean room a in the air shear room 1 may be
It is also possible to provide the air jet nozzle 7 and the duct box 5 on two side walls sandwiching one corner that do not touch.

The air jet nozzle 7 does not have to have the structure of the above embodiment as long as it has an elongated slit-shaped outlet.

``Effect of the invention'' The air shower device according to the invention has air jet nozzles that are continuous at an angle and are provided at predetermined intervals in the vertical direction, and the nozzle outlet is formed in the shape of a continuous elongated slit. The air jet is blown out from each outlet in the form of a curtain, and this curtain-like air jet prevents the dust floating below the air jet from flying upward.

Therefore, since a mechanism for blowing air from the ceiling is not required, the installation cost is lower, and since there is no need for installation space such as a ceiling duct, space utilization efficiency is further improved.

Furthermore, since the nozzle with the elongated slit-shaped outlet is slanted, the position of the air jet will gradually change when people or objects move within the air shower room, thereby further enhancing the dust removal effect. Can be done.

[Brief explanation of the drawing]

FIG. 1 is a half-cut sectional view showing an embodiment of an air shower device according to the present invention, FIG. 2 is a sectional view taken along arrow A-A in FIG. 1, and FIG. 3 is a sectional view taken along arrow B-- in FIG. 2.
FIG. 4 is a side view of the inside of the air shower room showing another embodiment, FIG. 5 is a schematic plan view of another embodiment, and FIG. 6 is a diagram of the apparatus of the example shown in FIG. 1. FIG. 7 is a schematic front view for explaining the operation, FIG. 7 is a half-cut sectional view of a conventional air shower device, and FIG. 8 is a sectional view taken along the arrow CC in FIG. 7. Explanation of the main symbols in the figure: 1 is the air shower room, 11 is the door, 5 is the duct box, 50 is the main filter, 52 is the side wall of the air shower room, 53 is the pre-filter, 6 is the fan, and 7 is the nozzle for the air jet. , 71 is an air outlet.

Claims (1)

[Scope of utility model registration request] A device with a structure in which an appropriate number of air jet nozzles are installed on the side wall of the air shower room, and purified air is blown out at high speed into the air shower room from these nozzles, and the blown air is collected from below and circulated to the nozzle side. In this method, the nozzles for the air jet are arranged in a continuous manner in an inclined manner when viewed from inside the air shower room, and are arranged at predetermined intervals in the vertical direction, and the blow-off opening of each nozzle is formed into a continuous elongated slit shape. An air shower device characterized by forming air blown out from an outlet into a curtain shape.