JPS62258722A - Air purifier - Google Patents

Abstract

PURPOSE:To exhaust a purified air stream as a uniform laminar stream without generating turbulent flow, by elongating the flow passage of the air stream sent out from a fan and introducing the air stream into an air filter by an air stream guide jig. CONSTITUTION:An air purifier has a partition plate 7 dividing a casing 1 into two purifying chambers 10, 10, fans 2, 2 and air filters 3, 3. Each purifying chamber 10 is divided into the fan chamber 11 in the inflow side of the air stream and the filter chamber 12 in the exhaust side of the air stream by a blind plate 4. A shield plate 6 closing a part of the communication hole 13 in the side of the fan chamber 11 is mounted to each blind plate 4. An air stream guide jig 5 consisting of two guide vanes 51, 52 bent in an arc shape and a fixed plate 53 is arranged to the communication hole 13 and through-holes are formed to the guide vane 51 positioned inside. Therefore, the air stream is introduced into the air filters by the air stream guide jig with uniform air flow velocity distribution.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an air purifying device that purifies air.

It is especially lightweight and thin, and has excellent dust collection efficiency.

Furthermore, the present invention relates to an air cleaning device that discharges purified air in the form of a laminar flow.

(Conventional technology) In fields such as semiconductor industry, electronic industry, precision machinery industry, biotechnology, and pharmaceutical industry.

An ultra-high degree of cleanliness is required. In a clean space.

There are clean rooms that clean the entire work environment, clean benches and clean booths that clean the work environment locally. In order to create such a clean space, an air cleaning device that combines a fan and an air filter is used.

In conventional air purification devices, the dynamic pressure of the airflow sent out by the fan is uneven, so when the airflow passes through the air filter in this condition.

The air discharged from the air filter becomes turbulent. If the turbulent flow is blown into, for example, a clean room, dust will convect, making it impossible to obtain a high level of cleanliness. Particularly when a plurality of fans are installed in parallel to purify air over a wide area, the airflows sent out from each fan interfere with each other, causing turbulence.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems, and its purpose is to reliably prevent the occurrence of turbulence in the air discharged from the air filter and improve the wind speed distribution. An object of the present invention is to provide an air cleaning device that can form a uniform laminar flow and maintain a high degree of cleanliness in, for example, a clean room. Another object of the present invention is to provide an air cleaning device that is lightweight and thin, and is capable of cleaning air over a wide range.

(Means for Solving the Problems) The air purifying device of the present invention includes a partition plate that divides the inside of the casing into two purification chambers, and a fan chamber on the airflow inflow side and a filter chamber on the airflow discharge side. In addition to dividing into
A blind curtain each having a communication port that communicates the fan chamber and filter chamber in each purification chamber, a fan disposed facing each other in the fan chamber in each purification chamber, and a fan disposed in the filter chamber in each purification chamber. with an air filter.

The air flow guiding device is provided at each of the communication ports and guides the air flow sent out from each fan in each purification chamber to an air filter, thereby achieving the above object.

In addition, the air purifying device of the present invention includes a partition plate that divides the inside of the casing into two purification chambers, and a partition plate that divides each purification chamber into a fan chamber on the airflow inflow side and a filter chamber on the airflow discharge side. blind plates each having a communication port that communicates the fan chamber with the filter chamber; fans disposed facing each other in the fan chambers in each purification chamber; and air filters disposed in the filter chamber in each purification chamber. , and a shielding plate that closes off a portion of each communication port on the fan chamber side, thereby achieving the above object.

Furthermore, the air purifying device of the present invention includes a partition plate that divides the inside of the casing into two purification chambers, and a partition plate that divides each purification chamber into a fan chamber on the airflow inflow side and a filter chamber on the airflow discharge side. blind plates each having a communication port that communicates the fan chamber with the filter chamber; fans disposed facing each other in the fan chambers in each purification chamber; and air filters disposed in the filter chamber in each purification chamber. , an airflow guiding device disposed at each of the communication ports to direct the airflow sent from the fan in each purification chamber to the air filter, and a shielding plate for blocking a part of each of the communication ports on the fan chamber side. The above object is thereby achieved.

(Example) Examples of the present invention will be described below.

As shown in FIGS. 1 and 2, the air purifying device of the present invention includes a partition plate 7 that divides the inside of the casing 1 into two purification chambers 10 and 10, and a partition plate 7 that is disposed inside the purification chamber 10 and 10, respectively. It has a fan 2.2 and an air filter 3.3.

The casing 1 has a thin rectangular parallelepiped shape. The interior of the casing 1 is divided by a partition plate 7 into two purification chambers 10°10. As the air flows through each purification chamber 10.10, it is purified. Each purification chamber 10 is divided by a blind plate 4 into a fan chamber 11 on the airflow inflow side and a filter chamber 12 on the airflow discharge side. Three of the four circumferential sides of each blind plate 4 are in contact with the three circumferential sides of the purification chamber 10, but the other side is separated from the other side of the purification chamber 10. A communication port 13 that communicates the fan chamber 11 and the filter chamber 12 is formed in this separated portion.

A fan 2 is disposed in a fan chamber 11 in each purification chamber 10. Each fan 2 sucks air along its axis and sends out air along a plane substantially perpendicular to the suction direction. The outlet 21 of each fan 2 is.

It faces a partition plate 7 arranged at the center of the casing l. The air flow sent out from the fan 2 in each purification chamber 10 is introduced into the communication port 13 formed in the blind plate 4 of each purification chamber 10 . A shielding plate 6 is attached to each blind plate 4 to close off a part of the communication port 13 on the fan chamber 11 side.

The shielding plate 6 closes off the downstream side of the communication port 13 in the fan chamber 11 in the direction of airflow movement. The shielding plate 6 is different from the fan 2! The airflow sent out from the fan 2 is introduced into the communication port 13 without circulating inside the fan chamber 11.

In the filter chamber 12 of each purification chamber 10, an air filter 3 is provided at a predetermined distance from the blind plate 4. The air filter 3 is airtightly attached to the four circumferential surfaces of the casing l.

Fan chamber 11 and filter chamber 12 in each purification chamber IO
An airflow guiding device 5 is disposed in each communication port I3 that communicates with the airflow guide. The airflow guiding device 5 includes, for example, two guide vanes 51 and 52 bent into an arc shape.

The guide vanes 51 and 52 have fixing members Fi and 53 that are attached to both ends of the guide vanes 51 and 52 and fix the guide vanes 51 and 52 in a substantially parallel state with a predetermined distance apart. A through hole is formed in the guide vane 51 located inside.

The through holes are formed in, for example, a punched metal shape; a multi-slit shape, a lattice shape, a wire shape, etc. The guide vanes 52 located on the outside are made of two metal plates, for example. The airflow guide 5 is fitted over the entire area of the communication port 13. The side extending to the side reaches the airflow inflow side of each purification chamber 10, and the other side is in contact with the blind plate 4.
The guide vanes 52 are arranged to be shifted toward the filter chamber 12 with respect to the inner guide vanes 5I, and the side portion extending into the fan chamber 11 is slightly separated from the airflow inflow side of each purification chamber 10. .

The other side is located near the air filter 3 of the filter chamber 12.

Note that the guide vanes of the airflow guide do not need to be arc-shaped, and may be, for example, flat plates. Also.

The guide vane is not limited to a configuration in which two guide vanes are provided.

One or more sheets may be provided.

(Function) In the air purifying device having such a configuration, air is sucked into the fan 2 along the axial direction by the fan 2 in each purification chamber 10, and the fan 2 sucks air into the fan 2 from its outlet 21. Airflow is sent into the fan chamber 11 along a plane substantially perpendicular to the direction of force. The airflow sent out from the outlet 21 of the fan 2 moves inside the fan chamber 11 along the side surface of each purification chamber 10, passes through the portion other than the portion blocked by the shielding plate 6, and passes through the communication port 1.
It will be introduced within 3. The introduced airflow passes through the guide vane 51 on the inside of the airflow guiding device 5, is guided by the guide vane 52 on the outside, and is introduced into the filter chamber 12.

Since the rotating airflow sent out from the outlet 21 of the fan 2 in each purification chamber 10 is slow inside the fan chamber 11 and fast outside the fan chamber 11, the dynamic pressure of the airflow is non-uniform.

The airflow having such non-uniform dynamic pressure flows into the fan chamber 11.
The dynamic pressure is averaged within. Then, the airflow with the averaged dynamic pressure collides with the guide vane 51 located inside the airflow guide 5 and diffuses on the surface thereof. And while passing through the guide vane 51.

The dynamic pressure is further made uniform and rectified.

Guided by the outer guide vane 52, the filter chamber I
Introduced within 2. The airflow introduced into the filter chamber 12 passes through the air filter 3 and is discharged to the outside of each purification chamber. The discharged airflow is introduced into each filter chamber 12 with its dynamic pressure equalized, so that it becomes a laminar flow and is purified while passing through the air filter 3.

(Effects of the Invention) As described above, the air purifying device of the present invention has a long flow path for the air flow sent out from the fan, and the air flow is guided by the air flow guide and introduced into the air filter. The airflow introduced into the airflow becomes a rectified flow whose dynamic pressure is equalized. Therefore.

The airflow is gently introduced into the air filter with a uniform wind velocity distribution, and the purified airflow leaves the air filter without generating turbulence.

It is discharged as a laminar flow with uniform dynamic pressure. Since the fans are arranged in parallel, air can be purified over a wide area. Since the airflow discharged from the air filter is a laminar flow, the airflow from each fan does not interfere with each other, preventing convection of dust within the clean room and ensuring a high level of cleanliness.

In addition, in the air purifying device of the present invention, the airflow sent out from each fan chamber is controlled by the shielding plate in each purification chamber.

Since the airflow is introduced into each communication port without circulating in the fan chamber, the airflow is reliably rectified.

Shield plate and mind! By combining with guide tools.

Furthermore, a more rectified laminar flow is obtained, and convection of dust within the clean room is reliably prevented.

4. Simple numbers on the surface of the screen ゛U Fig. 1 is a partially cutaway perspective view showing an example of the air purifying device of the present invention, Fig. 2 is a partially cutaway plan view thereof, and Fig. 3 is a partially cutaway side view thereof. FIG. 4 is a sectional view taken along the line ■-■ in FIG. 2.

DESCRIPTION OF SYMBOLS 1... Casing, 2... Fan, 3... Air filter, 4... Blind plate, 5... Air flow guide, 6...
··Shield.

7... Partition plate, 11... Fan chamber, 12... Filter chamber.

13...Communication port, 51.52...Guide vane.

that's all

Claims (1)

[Claims] 1. A partition plate that divides the inside of the casing into two purification chambers; and a partition plate that divides the inside of each purification chamber into a fan chamber on the airflow inflow side and a filter chamber on the airflow discharge side; blind plates each having a communication port that communicates the fan chamber and the filter chamber; fans disposed facing each other in the fan chambers in each purification chamber; and air filters disposed in the filter chambers in each purification chamber. An air purifying device comprising: an air flow guiding device disposed at each of the communication ports and guiding air flow sent out from each fan in each purification chamber to an air filter. 2. The air cleaning device according to claim 1, wherein each of the fans sends out airflow along a plane substantially perpendicular to the air suction direction. 3. The air cleaning device according to claim 1, wherein each of the airflow guides has one or more guide vanes. 4. The air cleaning device according to claim 1, wherein each of the airflow guides has two arc-shaped guide vanes, and the guide vanes are arranged substantially parallel to each other. 5. The air cleaning device according to claim 4, wherein a through hole is formed in the guide vane located inside each of the airflow guides. 6. A partition plate that divides the inside of the casing into two purification chambers, and divides each purification chamber into a fan chamber on the airflow inflow side and a filter chamber on the airflow discharge side, and communicates the fan chamber and filter chamber in each purification chamber. a blind plate each having a communication port, a fan disposed facing each other in a fan chamber in each purification chamber, an air filter disposed in a filter chamber in each purification chamber, and a fan chamber for each communication port. An air purifying device comprising: a shielding plate that closes off a part of the side; 7. The air purifying device according to claim 6, wherein each of the shielding plates is erected on each of the blind plates. 8. The air purifying device according to claim 7, wherein each of the shielding plates is arranged to prevent the airflow sent out from each of the fans from circulating in the fan chamber. 9. A partition plate that divides the inside of the casing into two purification chambers, which divides each purification chamber into a fan chamber on the airflow inflow side and a filter chamber on the airflow discharge side, and communicates the fan chamber and filter chamber in each purification chamber. a blind plate each having a communication port, a fan disposed facing each other in a fan chamber in each purification chamber, an air filter disposed in a filter chamber in each purification chamber, and an air filter disposed in each of the communication ports. An air purification device comprising: an airflow guiding device that guides airflow sent from a fan in each purification chamber to an air filter; and a shielding plate that closes a part of each communication port on the fan chamber side. 10. The air purifying device according to claim 9, wherein each of the fans sends out airflow along a plane perpendicular to the air suction direction. 11. The air purifying device according to claim 10, wherein each of the shielding plates is arranged to prevent the airflow sent out from each of the fans from circulating inside the fan chamber. 12. The air cleaning device according to claim 9, wherein each of the airflow guides includes two arc-shaped guide vanes arranged substantially in parallel. 13. The air cleaning device according to claim 12, wherein a through hole is formed in the guide vane located inside each of the airflow guides.