KR101735947B1 - Diffuser - Google Patents

Abstract

The present invention relates to an air diffuser having a tube-shaped diffuser pipe having an inlet for introducing air and having a plurality of diffuser holes formed along its longitudinal direction, an air box for holding and discharging the air discharged from the diffuser hole, And an induction member connected to the air hole and guiding the air not discharged through the acid hole to be recovered to the air box.

Description

DIFFERENTIAL DEVICE {DIFFUSER}

The present invention relates to an air diffuser.

In the case of submerged membrane modules, the surface contaminants must be shaken by continually introducing air (aeration) in order to prevent contamination of the microbial reactor or raw water tank from sticking to the membrane surface and degrading filtration performance. In this case, a diffuser or the like is provided under the membrane cassette, and air is injected to perform membrane cleaning. Generally, the diffuser has a circular pipe shape, and a plurality of diffuser holes are punched at regular intervals to distribute the air evenly throughout the membrane.

However, when the aeration process proceeds for a long time, deposition of sludge in the air piping and drying phenomenon occur. Due to the occurrence of this phenomenon, not only the acid gas hole and the acid gas pipe but also the air piping are blocked by the sludge locally, making it difficult to supply air and clean the module. In order to prevent this, Korean Unexamined Patent Application Publication No. 2003-0013370 employs a sequence in which sludge is cleaned by periodically injecting air, shutting off, and flushing piping.

However, much of the air at a high flow rate used in the flushing step is not utilized for cleaning, but is discharged to the outside of the pipe as it is, resulting in formation of coarse bubbles, which may cause membrane breakage of the membrane .

Accordingly, there is a need for a diffuser which prevents the loss of air, increases the aeration efficiency by reusing the air to be released, and prevents membrane breakage of the membrane.

SUMMARY OF THE INVENTION An object of the present invention is to provide a diffuser which can increase the efficiency of cleaning air by reusing air.

It is still another object of the present invention to provide a diffuser which can prevent membrane breakage of the membrane.

The above and other objects of the present invention can be achieved by the present invention described below.

One aspect of the invention relates to a diffuser.

In one embodiment, the air diffuser has a tube-shaped diffuser pipe having an inlet portion through which air flows, a plurality of diffuser holes extending along the longitudinal direction, an air box holding and discharging the air discharged from the diffuser hole, And an induction member connected to the opposite side of the inlet portion to guide air not discharged through the air diffuser hole to the air box.

In another embodiment, the air diffuser has a tube-shaped diffuser pipe having an inlet portion through which air is introduced, and a plurality of diffuser holes formed along the longitudinal direction; An induction member connected to the outlet of the diffusion pipe and guiding the direction of the air flow not discharged through the diffusion hole to the lower part of the diffusion pipe; And an air induction plate located below the diffuser pipe and guiding the air discharged from the guide member to be discharged to a lower portion of the diffuser.

The guide member may change the flow direction of the air not discharged through the diffuser hole by 95 ° or more.

The guide member may be in the form of a U shape, a hook or a fishing needle.

According to another embodiment, the air diffusing device may further include an air box for holding and discharging the air discharged from the diffuser hole.

The air box includes a housing having an inner cavity and an open bottom, a first partition defining a first cavity and a second cavity in the inner cavity, and a first chamber and a second chamber formed in the second cavity Wherein the housing has an outlet opening communicating with the second chamber, the first partition is open at the top so that the first cavity and the first chamber communicate with each other, and the second partition And the lower portion may be open so that the first chamber and the second chamber communicate with each other.

The housing may include at least one side wall and an upper surface portion connected to the at least one side wall.

Wherein the first partition is formed in the inner cavity and extends from a first lower end to a first end to form a first cavity and a second cavity, And may extend from the second upper end to the second lower end to form the first chamber and the second chamber of the second cavity portion.

The diffuser differs from the first diffuser in that the diffuser is located in the first cavity of the housing and air exhausted through the diffuser holes sequentially passes through the first cavity, the first chamber and the second chamber, .

The housing may include an inlet opening communicating with the first cavity, the diffuser pipe penetrating through the inlet opening.

The diffuser may comprise an air box having two or more separate inner cavities.

The diffuser may further include an air induction plate under the diffuser.

The air induction plate may include a plurality of air induction holes formed in the longitudinal direction, and the size of the air induction hole may be increased toward the inlet.

The air induction plate is formed so as to be inclined with respect to the diffuser. The gap between the air induction plate and the diffuser may increase from the inlet to the guiding member.

The air diffuser may have an air utilization rate of 30% or more in the flushing step.

The air diffuser may have an air utilization rate of at least 40% in the filtration step.

The air diffuser of the present invention has the effect of increasing the cleaning efficiency by increasing air utilization rate by reusing the air and preventing membrane breakage of the membrane.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a diffuser according to an embodiment of the present invention; FIG.
FIG. 2 is a schematic view of a diffuser according to another embodiment of the present invention. FIG.
FIG. 3 is a view for showing a change in air flow direction of the guide member of the present invention. FIG.
FIG. 4 is a schematic view of a diffusion pipe and an induction member according to an embodiment of the present invention.
5 is a simplified view of the shape of the guide member according to one embodiment of the present invention.
FIG. 6 is a schematic view of a guide member according to another embodiment of the present invention. FIG.
7 is a simplified cross-sectional view of an airbox according to one embodiment of the present invention.
FIG. 8 is a simplified view of a diffuser according to another embodiment of the present invention.
9 is a perspective view of an air box according to another embodiment of the present invention.
10 is a simplified illustration of an oxidizer device including an air induction plate according to another embodiment of the present invention.
11 is a plan view of an air induction plate according to another embodiment of the present invention.
12 is a simplified sectional view of an air induction plate according to another embodiment of the present invention.
FIG. 13 is a schematic view of a fryer apparatus to which an air induction plate according to another embodiment of the present invention is applied.
14 is a sectional view of an air induction plate according to another embodiment of the present invention.
FIG. 15 is a schematic view of a diffuser applying the air induction plate according to another embodiment of the present invention.

In order to more clearly describe the present invention, some terms will be used with the following meaning.

In the present invention, the 'inlet portion' is a portion into which air flows from the air diffuser pipe.

In the present invention, 'air utilization rate' means a value (%) calculated by (amount of air introduced into the air box after being discharged out of the guide member and re-released into the air box hole) / (amount discharged out of the guide member) * 100.

In the present invention, 'housing' means 'skeleton forming the structure of the air box'.

In the present invention, 'track type' means 'a figure formed by contacting a linear part of a semicircle with one side of a rectangle'.

Embodiments of the present application will now be described in more detail with reference to the accompanying drawings. However, the techniques disclosed in the present application are not limited to the embodiments described herein but may be embodied in other forms.

It should be understood, however, that the embodiments disclosed herein are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the width, thickness, and the like of the components are enlarged in order to clearly illustrate the components of each device. Also, while only a portion of the components is shown for convenience of explanation, those skilled in the art will readily recognize the remaining portions of the components.

When an element is described at the point of view of the general description of the drawings and an element is referred to as being located above or below another element, it is to be understood that the element may be located immediately above or below another element, Quot; can be intervened. Those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. In the drawings, the same reference numerals denote substantially the same elements.

It should be understood, however, that the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise, and the terms "comprise" Acts, components, parts, or combinations thereof, but does not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof It should be understood that it does not.

Hereinafter, the diffuser of the present invention will be described with reference to Figs. 1 and 3. Fig.

Diffuser

Referring to FIG. 1, the air diffuser 10 according to an embodiment includes a tube-shaped diffuser pipe 100 having an inlet portion into which air is introduced, a plurality of diffuser holes formed along the longitudinal direction, And an induction member 500 connected to the air box 300 in a direction opposite to the inlet of the air diffuser pipe 100 and guiding air not discharged through the air diffuser hole to the air box 300 do.

Referring to FIG. 2, the air diffuser 20 according to another embodiment includes a tube-shaped diffuser pipe 100 having an inlet portion through which air flows, and a plurality of diffuser holes formed along the lengthwise direction; An induction member (500) connected to the outlet of the diffuser pipe (100) and guiding the direction of the air flow not discharged through the diffuser hole to the lower part of the diffuser pipe; And an air induction plate 700 located below the diffuser pipe 100 and guiding the air discharged from the guide member 500 to be discharged to a lower portion of the diffuser pipe.

The diffusion pipe 100 is in the form of a tube into which air is injected and discharged, and the injected and discharged air can be used for cleaning the membrane.

The air box 300 holds and discharges the air discharged from the air diffuser pipe 100. Specifically, the air box 300 can hold a certain amount of the air, and then discharge the specified amount of air at a time. The air that is discharged at once increases the cleaning efficiency of the membrane.

The air box 300 may be located at an upper portion apart from the diffuser pipe 100 or may be located at the upper portion while the diffuser pipe 100 penetrates the air box 300. 1, the diffuser pipe 100 may be formed through the air box 300 through the side wall of the air box 300 and specifically penetrate through the inlet opening. However, no. For example, the air box 300 may be disposed above the diffuser pipe 100.

The guide member 500 is connected to the inlet of the diffuser pipe 100 in the opposite direction and the guide member 500 may be integrally formed with the diffuser pipe 100, .

The air induction plate 700 is positioned below the pipe 100 to guide the air discharged from the induction member 500 to be discharged to the lower portion of the air diffusion pipe 100. Specifically, the air induction plate 700 may include air induction holes to uniformly discharge the flow-changed air so that the air introduced by the induction member 500 can be used for cleaning the membrane.

The air diffuser 100 may include an air induction plate 700 for guiding the air discharged from the guide member 500 to be discharged to a lower portion of the air diffuser 100.

The diffuser (20) of the other embodiment may further include an air box (300) for holding and discharging the air discharged from the diffuser hole.

Hereinafter, a diffuser pipe and guide member according to one embodiment of the present invention will be described with reference to FIG. FIG. 4 is a schematic view of a diffusion pipe and an induction member according to an embodiment of the present invention.

Agricultural pipe

Referring to FIG. 4, the diffuser pipe 100 of the present embodiment has an inlet portion 110 through which air flows, and a plurality of diffuser holes 150 are formed along the length direction. The diffuser pipe 100 may be in the form of a tube, but is not limited thereto.

The diffuser pipe 100 may be connected to the guide member 500 in a direction opposite to the inlet. In the diffuser pipe 100, the guide member 500 may be integrally formed, or may be formed and then combined.

The air injected into and discharged from the diffusion pipe 100 can be used for cleaning the membrane. Specifically, the injected air may be discharged to the air box 300 through the diffuser hole, or may be discharged through the guide member 500.

The cross-sectional shape of the diffuser pipe 100 may be a circle, an ellipse, a track, a triangle, other polygons, a rounded polygon, or the like. Specifically, the cross-sectional area of the diffuser pipe 100 can be a circle in consideration of smooth air flow, but is not limited thereto. Also, the diffuser pipe 100 may have a different cross-sectional shape and cross-sectional area. When the cross-sectional area of the diffuser pipe 100 is a circle, the air pressure can be evenly distributed, and accumulation of sludge can be prevented.

The diffuser hole (150) is formed along the longitudinal direction on the diffuser pipe (100). The diffuser hole 150 may be formed on both sides of the diffuser pipe 100. At this time, the position of the diffuser hole 150 may be formed in a zigzag shape so that the diffuser holes 150 do not overlap, or may be formed symmetrically with respect to the lengthwise direction, but is not limited thereto. The shape of the diaphragm hole 150 can be a circle, an ellipse, a star, a track, a triangle, another polygon, a polygon having rounded corners, and the like. Specifically, the shape of the diffuser hole 150 can be a circle in consideration of air resistance, but is not limited thereto.

Guide member

4, the guide member 500 is connected to the outlet of the diffuser 100 in a direction opposite to the inlet, and the guide member 500 may be integrally formed with the diffuser 100, May be combined after formation.

In the flushing step, the air flow pipe (100) having no guide member (500) is opened in the direction opposite to the inlet part, and air and sludge can be discharged. ) Can not be used for cleaning but can be released as it is.

The guide member 500 does not contribute to the membrane cleaning and induces the air flow to the air box 300 so that the exhaust air can be recovered. Particularly, the amount of air consumption can be remarkably reduced by collecting air at a high flow rate, which is discharged at one time in the flushing step. The recovered air is supplied to the air box 300 and reused, so that the frequency of bubbles generated in the air box 300 can be increased. The increase in the frequency of the bubbles has an advantage of improving the membrane cleaning efficiency. In addition, the guide member 500 reduces an impact applied to the header and the membrane by preventing airflow from flowing into the air box 300 at a high flow rate, which is temporarily discharged in the flushing step, . This not only increases the service life of the membrane but also has the advantage of reusing the air supplied to the diffusion pipe.

The induction member 500 flows into the inlet 110 and flows through the diffuser pipe 100 without being discharged through the diffuser hole 150. The flow direction of the air flowing through the diffuser pipe 100 is 95 ° or more, specifically 120 ° or more, more specifically 140 ° or more. 3, the angle at which the guide member 500 changes the air flow direction of the diffuser pipe 100 is determined by the air flow direction 3 of the diffuser pipe 100 and the air flow Means an angle (?) Formed by the direction (5).

The shape of the guide member 500 can be used without limitation as long as the guide member 500 is introduced into the inlet 110 and guides the airflow flowing in the acidifier pipe 100 toward the inlet 110 again. Specifically, the guide member 500 may be in the form of a "U" shape, a hook or a fishing needle, but is not limited thereto.

Referring to FIG. 5, the guide member 500 may have a U-shape. Referring to FIG. 6, the guide member 500 may have a hook shape, but the present invention is not limited thereto.

The cross-sectional shape of the guide member 500 can be a circle, an ellipse, a track, a triangle, another polygon, a rounded polygon, or the like. Specifically, the cross-sectional area of the diffuser pipe 100 can be a circle in consideration of smooth air flow, but is not limited thereto. In addition, the guide member 500 may have a different sectional area or sectional area. In the case of the cross section of the guide member 500, there is an advantage that the air pressure is uniformly distributed and the accumulation of the sludge is prevented.

By including the guide member 500, the air diffusing apparatus according to one embodiment of the present invention has an air utilization rate of 30% or more, for example, 30% to 100%, particularly 35% to 100%, in the flushing step. , More specifically from 40% to 100%. In the above range, the cleaning efficiency is increased due to the reused air, membrane breakage due to the coarse air bubbles can be prevented, and the sludge is not deposited due to the continuous introduction of the acidifier pipe into the air.

In addition, the air diffuser according to one embodiment of the present invention may have an air utilization rate of not less than 40%, for example, 40% to 100%, specifically 45% to 100%, more specifically 50% to 100% . In the above-mentioned range, the cleaning efficiency is increased due to the reuse of the air in the above-mentioned range, and the sludge is not deposited due to the continuous induction of the diffusion pipe to the air.

Air box

Hereinafter, an air box according to one embodiment of the present invention will be described with reference to Figs.

Figure 7 schematically illustrates a cross-sectional view of an airbox according to one embodiment of the present invention. More specifically, FIG. 7 schematically shows a cross-sectional view taken along line A-A 'in FIG.

The air box 300 includes a housing having an inner cavity 330 and an open bottom, a first partition wall 332 defining a first cavity 332 and a second cavity 334 in the inner cavity 330 And a second partition wall 350 that forms a first chamber 336 and a second chamber 338 in the second cavity 334 and the housing communicates with the second chamber 338 Wherein the first partition wall 340 is open at the top so that the first cavity 332 and the first chamber 336 are in communication with each other and the second partition wall 350 is open at the top And the lower portion may be open so that the chamber 336 and the second chamber 338 communicate with each other.

The housing may include at least one side wall 322A, 322B, 324 and a top surface portion 325 connected to the at least one side wall 322A, 322B, 324. (The sidewall 324 is shown as one in Fig. 7 but refers to both sidewalls 322A, sidewalls 322B and top surface 325 and both sidewalls forming an inner cavity.)

The first partition wall 340 is formed in the inner cavity 330 and extends from the first lower end 344 to the first upper end 342 to form a first cavity portion 332 and a second cavity portion 334 The second partition wall 350 is formed in the inner cavity 330 between the first partition wall 340 and the first side wall 322A and extends from the second upper end 352 to the second lower end 354 To form the first chamber 336 and the second chamber 338 of the second cavity portion 334.

The air diffuser may be such that the diffuser pipe 100 discharges air to the first cavity 332 of the housing.

The housing may include an inlet opening 360 communicating with the first cavity 332 and the diffuser pipe 100 may penetrate through the inlet opening 360.

The acidifier device 10 according to one embodiment of the present invention can improve the cleaning efficiency of the membrane by including the air box 300. The air box 300 holds a certain amount of air discharged from the air diffuser pipe 100 and intermittently discharges the air, thereby achieving high efficiency cleaning and low energy.

Specifically, air exhausted from the air diffuser pipe (100) is supplied to the inner cavity (330) of the air box (300). 7 shows that the diffuser pipe 100 supplies air to the inner cavity 330 of the air box 300 through the inlet opening 360, but is not limited thereto. Specifically, the diffuser pipe 100 is disposed at a lower portion of the air box 300 to supply air.

The inlet opening 360 may be connected directly to the air box 300 through at least one of the sidewalls 322A, 322B, and 324. 7, the inlet opening 360 is connected to the air box 300 via the side wall 324. However, the present invention is not limited thereto.

The air may be air, but is not limited thereto. For example, the air may be another suitable gas.

As the amount of air in the inner cavity 330 increases, the air rises to the top of the first chamber 336 of the first cavity 332 and the second cavity 334, The liquid level in the first chamber 332 and the first chamber 336 becomes low. That is, the first cavity portion 332 is an air storage portion, and the first chamber 336 is an air holding portion.

When the liquid level in the first chamber 336 is lower than the second lower end 354 of the second partition 350, the air is guided through the opening of the second lower end 354 of the second partition 350, To the second chamber (338) through the first chamber (336). The air rises through the second chamber 338 and is discharged through the outlet opening 362 to the air bubble. Most of the air in the first chamber 336 and the first cavity 332 is discharged through the outlet opening 362 in a short time. That is, the second chamber 338 is an air bubble flow portion.

The air continues to flow through the second chamber 338 by a siphon effect and the liquid level in the first cavity 332 rises.

The liquid level rises in the first cavity 332 until it reaches the first top 342 of the first partition wall 340 acting as a dam and the first top 342 of the first partition 340 The air that is supplied to the first chamber 336 rises to the upper portion of the first cavity 332 and the first chamber 336 and flows into the first cavity 332 and the first cavity 336. [ Causing the liquid level in the first chamber 336 to drop again. The steps of generating air bubbles in the air box 300 are continuously repeated, and accordingly the air bubble generation is repeated intermittently in a short period of time.

8 schematically shows a diffuser according to another embodiment of the present invention. And more particularly to an air diffuser 20 including an air box 350 having two or more separate internal cavities.

For example, the diffuser device 20 according to another embodiment may include an air box 350 having two or more separate inner cavities with the diffuser pipe 100 and the plurality of diffuser holes 150. The air box 350 may include a plurality of inner cavities to generate a plurality of large air bubbles, and the plurality of large air bubbles may be used to increase the membrane cleaning efficiency.

9 schematically illustrates a perspective view of an air box 350 according to another embodiment of the present invention. The air box 350 may be an air box that includes the entire housing, with the inner cavity having a plurality of inner cavities separated by separate separation walls. Alternatively, the air box 300 may be an air box having separate internal cavities including respective housings.

Although FIG. 9 shows the air box 350 as including five separate internal cavities, the present invention is not so limited. For example, it may include as many other desired numbers. The air box 350 is advantageous in that it can increase the membrane cleaning efficiency by using a plurality of large air bubbles discharged from the plurality of outlet openings 362.

Also, although the figure shows that the exit openings 362 of the respective air boxes 300 included in the plurality of air boxes 350 are formed at the same position, the present invention is not limited thereto. For example, the air box 350 can be arranged so that the outlet opening 362 of each air box 300 is zigzag for cleaning efficiency, and other arrangements are possible. In this case, the diffuser pipe 100 may be formed through the side walls 322A and 322B other than the side wall 324 of the housing.

Air induction plate

Hereinafter, a diffuser according to another embodiment of the present invention will be described with reference to FIGS. 10 to 14. FIG.

Referring to FIG. 10, the diffuser device 40 according to another embodiment may further include an air induction plate 700 below the diffuser pipe 100. Specifically, the air flow induced by the guide member 500 is raised by the buoyancy force, and the air is recovered to the air box 300 to reuse the air. In this case, it may further include an air induction plate 700 to control the flow of the rising air. In FIG. 10, the air induction plate 700 is formed to have a higher height at the inlet 110 than at the guide member, but the present invention is not limited thereto.

Referring to FIG. 11, the air induction plate 700 may include an air induction hole 710 to supply rising air to a desired chamber, or to uniformly supply air to each chamber. 11, a plurality of air induction holes 710 are formed in the longitudinal direction of the air induction plate 700 in consideration of the pressure of the air discharged from the induction member 500, and the size of the air induction hole 710 is But the present invention is not limited thereto.

The shape of the air induction hole 710 may be a circle, an ellipse, a star, a track, a triangle, another polygon, a rounded polygon, or the like. Specifically, the shape of the diffuser hole 150 can be a circle in consideration of air resistance, but is not limited thereto.

In addition, the cross section of the air induction plate 700 may be formed in the cross section of FIG. 12 or 14 to increase the efficiency of air induction, but is not limited thereto. For example, the cross section of the air induction plate 700 may not be constant. Here, Figs. 12 and 14 are sectional views taken along the line B-B 'in Fig. The air induction plate 700 having the cross section of FIG. 12 or FIG. 14 can prevent the air recovered by the guide member 500 from escaping in the width direction of the air induction plate 700, There is an advantage to increase. For example, FIG. 13 is a schematic view of a diffuser applying the air induction plate of FIG. 12, and FIG. 15 is a schematic illustration of a diffuser applying the air induction plate of FIG. 13, but the present invention is not limited thereto.

The width of the air induction plate 700 may be in a ratio of 1.5: 1 to 10: 1 with respect to the diameter of the guide member 500. In the above range, it is possible not only to prevent the flow of the surrounding fluid but also to increase the air induction efficiency.

Hereinafter, the configuration and operation of the present invention will be described in more detail with reference to preferred embodiments of the present invention. However, the following examples are provided to aid understanding of the present invention, and the scope of the present invention is not limited to the following examples. The contents not described here are sufficiently technically inferior to those skilled in the art, and a description thereof will be omitted.

Example

Example  One

Size of 9.6mm ² on the acid group-length 95cm, 2.9mm ² cross-sectional area of diffuser pipe having eight holes, the cross-sectional area is circular and the length of 35mm, width 1.5mm ² of semicircular shape connected to the guide member, and the, eight holes in the upper group An air box (Lotte Chemical Co., Ltd.) having air reservoir chambers was installed to produce the air diffuser.

The air diffuser was operated with a filtration step at an injection air volume of 40 L / min, a filtration step at an injection air volume of 100 L / min, and a flushing step at an injection air volume of 150 L / min, The number of air discharges discharged from the outlet opening was measured for one minute.

When the amount of air to be injected is 40 L / min, there is no air to be discharged through the guide member. In the case of 100 L / min and 150 L / min, air can not escape from the diffusion hole and air is generated through the guide member.

Then, a mixed liquid having an MLSS concentration of 8,000 to 12,000 mg / L was prepared in the membrane tank, and the above-described air diffusing device was installed under the three membrane modules each having an area of 24 m ² to calculate the air release number Respectively.

Example  2

Except that the air induction plate having a width of 50 mm, a length of 800 mm and a cross section of 12 (a round air induction hole having a diameter of 6 mm at an interval of 100 mm) The number of air discharges and air use rates discharged from each exit opening were measured.

Comparative Example  One

The air diffuser was manufactured in the same manner as in Example 1 except that the induction member pipe was not connected, and the number of times of air emission and air use rate discharged from the exit opening of each air box was measured in the same manner.

Measurement method and evaluation method

(1) Measurement of the number of air discharges: The number of air discharged from the inlet openings of each air box in the filtering and flushing stages was measured for 1 minute. The number of times of air release in the first hole near the air injection portion and the eighth hole at the farthest hole were measured and are shown in Table 1 below.

(2) Air use rate (%): The air use rate is calculated by the following formula 1, and is shown in Table 2.

[Formula 2]

Air use rate (%) = (amount of air introduced into the air box after being discharged out of the guide member and re-released to the air box hole) / (amount discharged out of the guide member) * 100

(3) Uniformity of Deviation (Deviation,%): The difference between the maximum value and the minimum value was calculated by the following formula 2 based on the measured air release count data, and the unevenness of the acid was calculated and shown in Table 3 below.

[Formula 2]

Wear uniformity (deviation,%) = (maximum value - minimum value) / (minimum value) * 100

division Number of air emissions (first Hole / 8th Hole) Filtration step Flushing phase 40 L / min 100 L / min 150 L / min Example 1 9/5 15/21 23/30 Example 2 9/5 18/20 26/31 Comparative Example 1 9/5 15/14 20/19

As can be seen from the above Table 1, when air is injected at 100 L / min and 150 L / min at which air is discharged from the guide member, the number of times of air release recovered is significantly increased as compared with Comparative Example 1 which does not include the guide member .

Specifically, there is no difference between the embodiment and the comparative example in the amount of air injected at 40 L / min without air exhausted from the guide member. However, at the injection amounts of 100 L / min and 150 L / min, The number of times of release of air is significantly increased as compared with Comparative Example 1, Particularly, it can be seen that the air recovered by the guide member increases the air emission in the eighth hole near the guide member. The increase in air release in Examples 1 and 2, including the guide member, is due to the ability to re-use air, which is shown in Table 2 below.

Further, in the case of Example 2 including the air induction plate, it is found that the air emission in the first hole as well as the eighth hole increases, and the air emission of all the holes in the air box is uniform. The uniformity of the air release is shown in the evaluation of the uniformity of anagen in Table 3 below.

division Air Usage Rate (%) Filtration step (100 L / min) Flushing stage (150 L / min) Example 1 77.8 71.4 Example 2 100 85.7 Comparative Example 1 0 0

division Uniformity of deviation (deviation,%) Filtration step Flushing phase 40 L / min 100 L / min 150 L / min Example 1 80 40 30.4 Example 2 80 11.1 19.2 Comparative Example 1 80 7.1 5.3

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. As will be understood by those skilled in the art. It is to be understood, therefore, that the embodiments described above are intended to be illustrative in all respects and not restrictive.

10, 20, 30, 40: diffuser 100: diffuser pipe
110: inlet part 150:
300, 350: air box 500: guide member
700: air induction plate

Claims (16)

A pipe in the form of a tube having an inlet portion through which air is introduced and a plurality of acid holes in the longitudinal direction;
An air box for holding and discharging the air discharged from the diffuser hole;
An induction member connected to the inlet of the air diffuser pipe and guiding air not discharged through the air diffuser hole to the air box; And
An air induction plate formed under the diffusion pipe;
.
A pipe in the form of a tube having an inlet portion through which air is introduced and a plurality of acid holes in the longitudinal direction;
An induction member connected to the outlet of the diffusion pipe and guiding the direction of the air flow not discharged through the diffusion hole to the lower part of the diffusion pipe; And
An air induction plate disposed under the diffusion pipe and guiding the air discharged from the guide member to be discharged to a lower portion of the diffusion pipe;
.
3. The air diffuser as claimed in claim 1 or 2, wherein the guide member changes the flow direction of the air that has not been discharged through the diffuser hole by more than 95 degrees.
3. The device according to claim 1 or 2, wherein the guide member is in the form of a U-shape, a hook or a fishing needle.
3. The air diffuser according to claim 2, wherein the diffuser further comprises an air box for holding and discharging the air discharged from the diffuser hole.
The airbag according to claim 1 or 5,
A housing defining an inner cavity and having an open bottom;
A first partition wall defining a first cavity and a second cavity in the inner cavity; And
A second partition defining a first chamber and a second chamber in the second cavity;
/ RTI >
The housing including an outlet opening communicating with the second chamber,
Wherein the first partition is open at the top so that the first cavity and the first chamber are in communication with each other, and the second partition is open at the bottom so that the first chamber and the second chamber are in communication with each other.
7. The device of claim 6, wherein the housing includes at least one side wall and an upper surface portion connected to the at least one side wall.
8. The method of claim 7,
The first partition is formed in the inner cavity and extends from a first lower end to a first end to form a first cavity and a second cavity,
Wherein the second partition is formed in the inner cavity between the first partition and the first sidewall and extends from a second top to a second bottom to form a first chamber and a second chamber of the second cavity.
7. The air diffuser as claimed in claim 6, wherein the diffuser differs from the first diffuser in that the diffuser is located in the first cavity of the housing and the air exhausted through the diffuser holes sequentially passes through the first cavity, And an air diffuser for discharging air through the opening.
The apparatus of claim 6, wherein the housing includes an inlet opening communicating with the first cavity, the diffuser pipe penetrating through the inlet opening.
6. The air diffuser of any one of claims 1 to 5, wherein the diffuser device comprises an air box having two or more separate inner cavities.
delete The air damper device according to claim 1 or 2, wherein the air induction plate includes a plurality of air induction holes formed in the longitudinal direction, the size of the air induction holes becoming larger toward the inlet.
3. The air diffuser as claimed in claim 1 or 2, wherein the air induction plate is formed to be inclined with respect to the diffuser, and the distance between the air induction plate and the diffuser increases as the guider moves from the inlet.
The apparatus according to any one of claims 1 to 4, wherein the air diffuser has an air utilization rate of 30% or more in a flushing step.
3. The air diffuser as claimed in claim 1 or 2, wherein the air diffuser has an air utilization rate of at least 40% in the filtration step.

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