JPH0732440U - Air shower device - Google Patents

Abstract

(57) [Abstract] [Purpose] To reduce the installation space by forming an extremely thin air cleaning chamber and making the air shower device compact without changing the air volume from the blower. [Arrangement] In an air shower device equipped with an air cleaning chamber for injecting an air shower toward a passage, a motor-embedded blower in which a motor is fitted in a casing is used, and a rotary shaft is provided with a thickness of the air cleaning chamber. Arranged in line with the direction, narrowing the thickness of the air purification chamber.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to an air shower device installed at the entrance to a space maintained in a clean environment such as a clean room.

[0002]

[Prior art]

 An air shower device is installed at the entrance to the working room, which is always kept clean, such as a clean room or bio-clean room, to remove dust and germs adhering to the clothes of the occupants.

As such a conventional air shower device, a sirocco fan is generally used as a blower and is designed to secure a wind speed of 20 to 25 m / sec. Therefore, the total front dimension of the air shower device is about 1500 to 1800 mm. Among them, the thickness dimension occupied by the air cleaning chamber where the blower is installed reaches about 350 to 500 mm, and it is difficult to secure the installation space because a large number of air shower devices are used especially in a large-scale clean room. As a result, there has been a demand for a compact air shower device.

[0004]

[Problems to be solved by the device]

 This invention aims to reduce the installation space by forming an extremely thin air cleaning chamber and making the air shower device compact without changing the air volume from the blower.

[0005]

[Means for Solving the Problems]

 In an air shower device equipped with an air purification chamber that injects an air shower toward the passage, a motor-embedded blower with a motor fitted in the casing was used, and the rotation axis was aligned with the thickness direction of the air purification chamber. The air cleaning room was placed at the very least to reduce the thickness of the air cleaning room.

[0006]

[Action]

 By configuring the air cleaning chamber of the air shower device as described above, the thickness of the air cleaning chamber can be narrowed to 200 mm without changing the circulating air volume, and the air shower device can be made compact.

[0007]

【Example】

 The air shower device 1 of the present invention shown in FIGS. 1 and 2 is provided with a gate-shaped partition wall 3 inside a box-shaped main body case 2 and penetrates the central portion of the main body case 2 from the front side to the back side. It is divided into a passage 4 and an air cleaning chamber 5 located on both sides of the passage 4. The passage 4 and the air cleaning chamber 5 are located in the middle portion of the side wall portion 6 of the gate-shaped partition wall 3. And the lower part and the ceiling part 7 are connected to each other by the vent holes 8, 9 and 10.

An air chamber 11 is provided in the air cleaning chamber 5 so as to cover the ventilation port 8 of the side wall portion 6 of the partition wall 3, and the bottom plate 12 forming the air chamber 11 is provided with the air discharged from the blower 13. The mouth 14 is open.

The blower 13 is arranged in the blower air chamber 16 together with the pre-filter 15 located below the blower 13, and communicates with the passage 4 by the vent hole 9 provided in the side wall portion 6 of the partition wall 3.

As shown in FIGS. 3 and 4, the blower 13 has a motor 18 embedded in the casing 17 and is of a motor-embedded type supported by a support rod 19 to enhance the cooling effect of the motor 18. Therefore, an air suction opening 20 is provided on the mounting side of the motor 18. The motor 18 is a so-called pole change motor, which can switch the amount of air blown between high and low levels by selecting the number of revolutions from about 2800 revolutions per minute or about 1400 revolutions per minute. The runner 21 of the blower 13 uses a double caulking type iron runner capable of withstanding high static pressure and high rotation. The shaft core is fixed to the rotary shaft 22 of the motor 18, and the axial direction of the rotary shaft is cleaned with air. It is installed in the blower chamber 16 in line with the thickness direction of the gasification chamber 5. The vent 14 of the blower 13 is open on the bottom plate 12 of the air chamber 11, as described above.

A filter 23 such as a hepa filter is provided in the air chamber 11, and cleans the air sent from the air outlet 14 by the blower 13. Moreover, a rectangular opening 25 is provided in the ceiling portion 24 of the air chamber 11, and the opening 25 is opened and closed by a damper 26 covering the front surface thereof. The opening / closing operation of the damper 26 is such that the opening 25 is opened by the weight of the damper 26 and the damper 26 is pushed up by the increase in the pressure inside the air chamber 11 to close the opening 25.

Reference numeral 27 denotes a nozzle for blowing a thin air shower having a variable outlet angle, and a depth of about 50 mm, which was about 80 mm in the past, 28 a mat switch, and each of the inlets and outlets of the passage 4 Doors 29 and 30 are provided.

Next, the operation will be described based on the above embodiment.

When no worker is in the passage 4, an air curtain is formed in the passage 4 to shut off the work chamber from the outside. That is, the blower 13 is operated at a low air volume, and the air sucked from the suction opening 20 of the blower 13 enters the air chamber 11 through the air outlet 14 and is filtered and cleaned by the filter 23 and is sent. Since the amount of blown air is low, the damper 26, which is lowered by its own weight, cannot be pushed up by the pressure in the air chamber 11, and the clean air in the air chamber 11 flows out from the opening 25, and the clean air in the main body case 2 and the partition wall 3 It reaches the upper space 32 formed by the ceiling portion 7, the suction force of the blower 13 reaches the inside of the passage 4 through the vent hole 9 and the increase in pressure in the air chamber 11 causes the passage through the vent hole 10. Flow down to 4 to form an air curtain. The air flowing down into the passage 4 is sucked and recirculated into the blower chamber 16 through the ventilation port 9, filtered by the pre-filter 15, and then sucked and circulated by the blower 13.

Now, when an operator enters the passage 4 and depresses the mat switch 28, the blower 13 shifts to high wind speed operation for a fixed time set by a timer, and a large amount of clean air sent into the air chamber 11 causes air to flow. The pressure in the chamber 11 rapidly increases to push up the damper 26 and close the opening 25. Further, by being blown into the air chamber 11, the clean air is blown out from the nozzle 27 to the passage 4 and blows out dust, germs and the like adhering to the clothing surface of the worker.

The air and dust blown out into the passage 4 reach the inside of the blower air chamber 16 through the ventilation port 9 by the suction force of the blower 13, and the dust and the like are removed by the pre-filter 15 and are returned to the blower 13 again. It is sucked under reflux and this is repeated.

When the worker leaves the passage 4, after a certain time set by the timer, the blowing of the purified air from the nozzle 27 for blowing the air shower is stopped, and the blower 13 automatically returns to the low wind speed operation. The air curtain is formed in the passage as described above.

In the above embodiment, the central portion of the box-shaped main body case 2 is defined as the passage 4 penetrating from the front side to the rear side, and the air cleaning chambers 5 are provided on both sides of the passage 4. Of course, the air cleaning chamber may be provided only on one side of the passage 4.

Since the air shower device of the invention has the above-mentioned configuration, the thickness of the air cleaning chamber 5 can be reduced to about 60% of the conventional one without changing the circulating air volume. It is also possible to form the air shower in the passage by embedding the air cleaning chamber 5 in the wall of the existing passage and using the wall and the ceiling, or eliminating the damper 26 and using only the wall. is there.

[0020]

[Effect of device]

 As described above in detail, the air shower device of the present invention is an air shower device having an air purification chamber for injecting an air shower toward a passage, and is a motor-embedded blower in which a motor is fitted in a casing. Is placed with its axis of rotation aligned with the thickness direction of the air purification chamber, and the thickness of the conventional air purification chamber was 350 mm to 500 mm without changing the amount of circulating air in the air shower device. The taste can be narrowed to 200 mm, and the total front dimension of the air shower device, which was 1500 to 1800 mm, can be narrowed to 1200 mm, and as a result, the installation space of the air shower device can be greatly reduced.

[Submission date] January 18, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction content]

[0017] The cleaning air from the nozzle 27 for the air shower blowing blowing stops after a certain time set Ri by the timer, the blower 13 is automatically returned to the low wind speed operation, said as the ceiling portion 7 blown from the vent 10 to form formed an air curtain in the passage 4 by the air. However, the passage 4, from the vent 10 also when blown from the nozzles 27 of the cleaning air is carried out, and from the nozzle 27 even when the blowing of air is performed from the vent 10, very A small amount of air is flowing out.

[Brief description of drawings]

FIG. 1 is a partially longitudinal front view showing an example of implementation of an air shower device of the present invention.

FIG. 2 is a vertical sectional side view of the same.

FIG. 3 is a plan view of a blower used in the present invention.

FIG. 4 is a sectional view taken along line IV-IV of the same.

[Explanation of symbols]

 1 Air Shower Device 5 Air Purification Room 8, 9, 10 Vent Port 11 Air Chamber 13 Blower 16 Blower Chamber 18 Motor 20 Suction Opening 23 Filter 26 Damper 27 Nozzle

Claims (1)

[Scope of utility model registration request] 1. An air shower device having an air cleaning chamber for injecting an air shower toward a passage, wherein a motor-embedded blower having a motor fitted in a casing, and a rotary shaft of which is provided in the air cleaning chamber. An air shower device characterized by arranging them so that they match the thickness direction and narrowing the thickness of the air cleaning chamber.