JPH019668Y2 - - 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. 6 and 7.

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 holes 21 formed in the front 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 room 1 from nozzle 4 is
A part of the air blown from the ceiling passes through a pre-filter 26 such as a nylon non-woven fabric provided at the lower part of the side wall 25 and a main filter 22, and then circulates through the above-mentioned path.

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, floating dust tends to fly upward from these gaps, and the floating dust that flies up in this way is 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 a space for installing ducts and a special fan are required in the ceiling, there are problems in that the equipment costs are high and the efficiency of space utilization 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 in the horizontal direction and at predetermined intervals in the vertical direction, and the air outlet of each nozzle is connected in a continuous manner. It is formed into an elongated slit shape, and the air blown out from the outlet is configured to form a curtain shape.

"Operation" As mentioned above, the present invention has air jet nozzles that are continuous in the horizontal direction and are provided at predetermined intervals in the vertical direction, and the outlet of each nozzle is formed in the shape of a continuous long and narrow slit. Therefore, the air jet blown out from the outlet of each nozzle is formed in the form of a curtain with no gaps, and this well-formed air curtain effectively prevents floating dust from flying up.

Therefore, there is no need for an air jet blowing structure from the ceiling.

"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 or acrylic window b is attached to the upper part of the window. In addition, on the floor of room 1, there is a dust removal mat 13, such as a gelatin mat, that absorbs and removes dust.
is laid out.

A duct box 5 is provided on both sides of the room 1, and an air intake port 51, a high-performance main filter 50, and a fan 6 are installed in the lower part of the duct box 5.

The side wall 52 of the air shower room 1, which constitutes a part of the duct box 5, has a continuous slit-shaped outlet 71 that opens toward the room 1 side, and has an appropriate number of air jets that communicate with the inside of the duct box 5. The nozzles 7 are provided horizontally at predetermined intervals in the vertical direction, and below the nozzles 7, a prefilter 53 made of a nylon nonwoven fabric as an electrostatic precipitator and communicating with the duct box 5 is provided.

The air jet nozzle 7 is preferably constructed so that its blow-off port 71 can change its angle in the vertical direction. In this embodiment, as shown in an enlarged view in FIG.
2. The nozzle 7 is formed by the end plates 76 at both ends that connect each other, and the nozzle 7 is attached to the upper and lower edges of the mounting opening 55 of the groove-shaped recess 54 formed in the side wall 52 of the room 1 to the sliding contact plates 72, 72. Guide 73 with an arc-shaped cross section that slides into contact
is attached by a bracket 74, and one sliding contact plate 72 is lightly pressed from the outside of one guide 73 with a push screw 75 to prevent the nozzle 7 from moving. The outlet 71 is configured so that it can be turned up and down by approximately 45 degrees. The bracket 74 is attached 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,
When the fan 6 operates, air inside and outside the air shower room 1 is sucked into the duct box 5 through the air intake port 51 and the pre-filter 53, and the air is purified by the main filter 50.
The air is blown out from each nozzle 7 into the room 1 at a predetermined angle in the form of a curtain, and the air blown into the room 1 is circulated through a pre-filter 53 and a 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.

Each air jet d1 to d4 is shaped like a curtain with no gaps, so each air jet d
Dust floating below 1 to d4 is prevented from rising upward from the air jet, and is sucked downward along the air flow, and is passed through the filters 53,
Supplemented with 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.

The air shower device of the above embodiment is installed in room 1.
A duct box 5 and a nozzle 7 are provided on both sides of the duct, but depending on the place of use, these may be attached only to one side wall. Also, depending on the situation at the installation site, as shown in Fig. 5, an air jet nozzle and duct box 5 may be installed on two side walls of the air shower room 1 that sandwich one corner that is not in contact with the door a1 of the clean room a. .

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

``Effect of the invention'' The air shower device according to the invention has air jet nozzles arranged in a continuous manner in the horizontal direction, and each nozzle has a continuous slit-like outlet, so that each air jet blown out can It is formed into a curtain-like shape without any dust, and can effectively prevent floating dust from rising.

Therefore, there is no need for a structure that blows out an air jet from the ceiling, and the installation can be done at a lower cost, and space utilization efficiency can be improved.

[Brief explanation of the drawing]

Fig. 1 is a half-cut sectional view showing one embodiment of the 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 an enlarged sectional view of an air shower nozzle. , FIG. 4 is a schematic front view for explaining the operation of the device shown in FIG. 1, FIG. 5 is a schematic plan view of another embodiment, FIG. 6 is a half-cut sectional view of a conventional air shower device, and FIG. The figure is arrow B- in Figure 6.
It is a sectional view along B. Explanation of 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, 7
71 is an air jet nozzle, and 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 the horizontal direction and at a predetermined interval in the vertical direction, and the outlet of each nozzle is formed into a continuous elongated slit shape, and the air blown out from the outlet is formed into a curtain. An air shower device characterized by a shape.