JP2000320883A - Uniform flow blowing device - Google Patents

Abstract

(57) [Summary] [Problem] To provide a uniform flow with a simple structure. SOLUTION: Inside a box 2, a first distribution plate 14 and a second distribution plate 15 each having a rectangular shape are formed along an other side wall 4 facing an air inlet 5 over an upper wall 6 and a lower wall 7. Provide. The first distribution plate 14 is spaced from the other side wall 4, and one side edge thereof is in contact with the rear wall 8, and the other side edge is spaced from the opening 3. Second distribution plate 15
Is disposed on the upstream side of the first distribution plate 14 in the air inflow direction, facing the space between the other side edge of the first distribution plate 14 and the opening 3, and the side edge on the opening side is connected to the opening 3. When spaced apart from each other and viewed through the air inlet 5, at least the side edge on the rear wall side of the second distribution plate 15 and the side edge on the opening side of the first distribution plate 14 are arranged so as not to be separated from each other. I do.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a uniform flow blower for generating a blown airflow from a ventilation device installed in a workplace where dust is generated by welding or polishing, or a workplace using an organic solvent such as painting or washing. .

[0002]

2. Description of the Related Art A uniform flow generally refers to a state in which the velocity of a flow is constant everywhere as a vector, but in this field, the magnitude of the velocity of the flow is a cross section perpendicular to the flow. A state that is constant in the cross section. Such streams are said to be suitable for removing harmful substances without diffusion. That is, the smaller the deviation (turbulence) from the average speed in the cross section, the better.

Conversely, if the turbulence is large in a cross section perpendicular to the flow, it is expected that the possibility of harmful substances being diffused increases. It is often the case that the flow is not uniform, such as when the shape of the air inlet and the air outlet changes drastically, or when the direction changes drastically even if the shape is the same.

Conventionally, a plurality of perforated plates having a uniform aperture ratio are used in an air outlet, and the aperture ratios of the respective perforated plates are made different from each other. They were trying to produce a uniform flow by arranging them at appropriate intervals.

In Japanese Patent Publication No. 3-79618, first and second perforated plates are provided at an air outlet, and the first perforated plates are arranged at appropriate intervals so as to be located on the upstream side. The first perforated plate gradually increases the porosity from the farthest side from the air inlet to the vicinity of the air inlet, and minimizes the porosity in the vicinity of the air inlet. The plate describes a uniform flow blowing device in which the porosity is gradually reduced from a central portion to a peripheral portion. This uniform flow blowing device is configured to provide a uniform flow by providing two perforated plates in which a large number of holes having different aperture ratios are arranged on a fixed basis.

Japanese Patent Application Laid-Open No. 59-32733 discloses that an opening of an air outlet is provided in a duct wall, a plurality of straightening plates are installed in the opening perpendicular to the duct axis, and an air supply end of each straightening plate is connected. An air outlet is described which aligns the air outlet end of each straightening plate with the opening along with the opening diagonal line and makes the outlet air velocity uniform over the front surface of the outlet.

[0007] In the uniform flow blowing device, for example, when the air flow changes abruptly such as when the air inlet and the air outlet are at a right angle, that is, when there is a large turbulence or deviation in the velocity distribution, In addition, the resistance must be increased, for example, by reducing the hole diameter of the perforated plate to be small and fine, or by stacking multiple perforated plates. In this case, there are problems such as generation of wind noise and excessive load on the air supply fan.

The uniform flow blowing device described in Japanese Patent Publication No. 3-79618 has a small resistance, but requires a long time for production and adjustment after production due to the complicated distribution of the hole diameter of the perforated plate. Since the condition of the air supply speed is narrow, it is easily affected by the speed distribution of the air inlet, and there is a problem that a slight turbulence occurs when the direction of the air flow changes suddenly as described above.

[0009] Japanese Utility Model Application No. 3052016 (Japanese Utility Model Application No. 1)
No. 0-1135), the blowing chamber has a corner portion for changing the flow direction of the primary air substantially at right angles to the extending direction of the air supply duct, and the primary air portion is provided at the corner portion toward the inside of the corner portion. A main guide plate that pushes back the air volume distribution of
2. Description of the Related Art A blowing unit provided with a sub-guide plate for equalizing a negative pressure generated in a shadow region of a main guide plate is known.

In this device, a large main guide plate is arranged on a side close to an air supply duct in a corner portion of a blow-out chamber, and a small auxiliary guide is provided in a region shadowed by the main guide plate, that is, in a region far from the air supply duct. A plate is arranged. The main guide plate adjusts the distribution of the main flow of the primary air, and has a function of pushing back the air volume distribution that tends to be deviated in a direction away from the inside of the corner portion toward the inside of the corner portion. 5 degrees. The sub-guide plate has a function of equalizing the negative pressure generated in a shadowed portion of the main guide plate and preventing turbulence of the primary air toward the nozzle, particularly, a backflow, and has an inclination angle of 74 degrees.

[0011] The book name "Factory Ventilation" published in 1982 (published by the Society of Air Conditioning and Sanitary Engineers, written by Taro Hayashi)
On page 12, lines 4 to 5, "If the accuracy of the uniformity of the velocity distribution is raised to within about ± 20%, a uniform flow is obtained, and the cross section becomes continuous. It is presented.

[0012]

SUMMARY OF THE INVENTION An object of the present invention is to provide a uniform flow blowing device which can blow out a uniform flow with a simple structure having at least two or more distribution plates.

[0013]

According to a first aspect of the present invention, there is provided a uniform flow blowing device having an opening on the entire front surface of a hollow box having a rectangular parallelepiped shape, and a rear wall opposed to the opening; An air inlet is provided on one side of the box orthogonal to the opening, while another side is provided on the other side of the box facing the air inlet, and the outside of the opening serves as an air outlet. Therefore, in order to solve the above problem, inside the box, a plurality of distribution plates each having a rectangular shape along the other side wall facing the air inlet are formed on the upper wall and the lower wall of the box. A first distribution plate of the distribution plate, which is located on the most downstream side in the inflow direction of the air supplied from the air inlet, is spaced from the other side wall, and has one side edge thereof. Contact the rear wall of the box and open the other side edge Spaced and arranged relative to the second
The distribution plate is disposed on the upstream side of the first distribution plate in the air inflow direction, facing the space between the other side edge of the first distribution plate and the opening, and has a side edge on the opening side. Are arranged at an interval with respect to the opening, and when viewed through the air inlet, at least a side edge on a rear wall side of the second distribution plate, and a side edge on an opening side of the first distribution plate. Are not separated from each other.

[0014] The uniform flow blowing device according to claim 2 is
2. The device according to claim 1, further comprising: an upstream side of the second distribution plate in the air inflow direction, facing a space between a side edge of the second distribution plate on an opening side and the opening. 3. When disposing the three distribution plates and seeing through the air inflow port, at least the side edge on the rear wall side of the third distribution plate and the side edge on the opening side of the second distribution plate are not separated from each other. Features.

According to a third aspect of the present invention, there is provided a uniform flow blowing device.
3. The third distribution plate according to claim 2, wherein the third distribution plate has an opening-side side edge spaced from the opening, and the third distribution plate has an opening-side side edge and the opening. 4. A fourth distribution plate is further arranged on the upstream side of the third distribution plate in the air inflow direction, facing the space between
When viewed through the air inlet, at least a side edge on a rear wall side of the fourth distribution plate and a side edge on an opening side of the third distribution plate are not separated.

[0016] The uniform flow blowing device according to claim 4 is
2. The method according to claim 1, wherein the plurality of distribution plates include:
A guide plate that intersects the air inlet side is connected to the side edge of each opening side, and the crossing angle between each distribution plate and the guide plate is 90 degrees or less. .

The operation of the plurality of distribution plates will be described. The air is sent to the inside of the box by an air supply fan connected to the air inlet. Air is sent from the air inlet toward the inside of the box. The rear wall side portion of the sent air flows along the rear wall side of the box toward the other side wall along the rear wall. The first distribution plate located on the most downstream side in the inflow direction of the air and having one side edge abutting on the rear wall of the box body is brought into contact with the first distribution plate, and guided to the opening side by the first distribution plate. It flows to the opening side through the space provided between the opening side edge of the distribution plate and the opening.

The portion on the opening side of the air from which the air is sent out from the air inlet toward the inside of the box faces the space between the other side edge of the first distribution plate and the opening, and in the air inflow direction. The second distribution plate contacts a second distribution plate arranged upstream of the first distribution plate, and the second distribution plate guides a part of the air to flow toward the opening side, and guides the rest to the rear wall side of the box. . The air distributed to the opening side is guided to flow to the opening side through a space opened between the side edge of the second distribution plate on the opening side and the opening, and the air distributed to the rear wall side is The air flows together with the air that has not been distributed by the two distribution plates, and flows along the rear wall of the box along the rear wall toward the other side wall.

When viewed through the air inlet, at least the side edge on the rear wall side of the second distribution plate and the side edge on the opening side of the first distribution plate are not separated from each other in the air inflow direction. The air distributed to the rear wall side by the second distribution plate disposed upstream of the one distribution plate is combined with the air that has not been distributed by the second distribution plate, and the air is distributed to the first distribution plate along the rear wall. And spread to the opening side.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a see-through uniform flow blowing device according to the first embodiment of the present invention, and FIG. 2 is a plan view showing a see-through uniform flow blowing device. FIG. 3 is a side view of the uniform flow blowing device shown in perspective.

The uniform flow blowing device 1 includes a hollow box 2 having a rectangular parallelepiped shape. The box 2 has an opening 3 on the entire front surface of a rectangular shape, and the box 2 orthogonal to the opening 3. A left side wall (other side wall) 4 forming the left side of the box 2, an air inlet 5 formed by opening the entire right side orthogonal to the opening 3, an upper wall 6 forming the upper surface and the lower surface (bottom surface) of the box 2, and Lower wall 7
And a rear wall 8 facing the opening 3.

A duct 9 is connected to the air inlet 5 on the right side of the box 2 orthogonal to the opening 3. In the opening 3, a first perforated plate 1 made of punched metal having an opening ratio of 22.6%
0 and a second perforated plate 11 made of punched metal also having an aperture ratio of 22.6% are arranged so as to be spaced apart from each other at a certain interval. A grid 12 is arranged, and the front surface (outside of the opening 3) of the rectifying grid 12 forms an air outlet 13.

As shown in FIGS. 1 to 3, inside the box 2, a plurality of rectangular distribution plates 14 and 15 are formed on the box 2 along the left side wall 4 of the box 2. It is provided over the wall 6 and the lower wall 5. Note that the first embodiment is an embodiment in which the number of distribution plates is two.

The arrangement of the distribution plates 14 and 15 in the box 2 will be described. For the sake of explanation, the distance between the air inlet 5 of the box 2 and the left side wall 4 facing the air inlet 5 is defined by the box 2
And the distance between the opening 3 of the box 2 and the rear wall 8 facing the opening 3 is defined as the width b of the box 2 (see FIG. 2).

As shown in FIG. 2, the first distribution plate 14 located at the most downstream side in the inflow direction of the air supplied from the air inlet 5 (indicated by an arrow in FIG. 2) is
And one side edge of which is spaced from the rear wall 8 of the box 2.
And the other side edge is arranged with an interval from the opening 3.

The second distribution plate 15 faces the space between the other side edge of the first distribution plate 14 and the opening 3 and is disposed upstream of the first distribution plate 14 in the air inflow direction. When the side edge on the opening 3 side is spaced from the opening 3 and is seen through the air inlet 5, at least the second distribution plate 15
The side edge on the rear wall 8 side and the side edge on the opening side of the first distribution plate 14 are arranged so as not to be separated from each other (see FIG. 2).

FIG. 4 is a plan view showing Example 1 of the first embodiment of the uniform flow blowing device. The box 2 has a lateral dimension a
Is 1000 mm, the width dimension b is 350 mm,
The height dimension c is 500 mm (see FIGS. 3 and 4).
The distance from the opening 3 of the box 2 to the front surface of the honeycomb-shaped rectifying grid 12 serving as the air outlet 13 is 100 mm.

As shown in FIG. 4, the first distribution plate 14 and the second distribution plate 15 are 1/1 / (mm) of the width of the box 2 (350 mm).
2 is 175 mm in width. The second distribution plate 15 is formed at a position 300 mm from the air inlet 5 and at a side edge on the opening 3 side of 20 mm from the opening 3 (a side edge on the rear wall 8 side is 1 mm from the rear wall 8).
(Open 55 mm). The first distribution plate 14
A position 700 mm from the air inlet 5 (the distance from the distribution plate 15 is 400 mm and the distance from the left side wall 4 is 300 mm);
Further, the side edge of the first distribution plate 14 on the rear wall 8 side is arranged in contact with the rear wall 8.

The operation of the first distribution plate 14 and the second distribution plate 15 will be described. FIG. 5 is a plan view showing the flow of air in the uniform flow blowing device 1 of the first embodiment.
Air is sent out from the air inlet 5. First, approximately half of the delivered air is guided to flow toward the opening 3 by the second distribution plate 15 disposed closest to the air inlet 5 and near the opening 3. Almost half of the air goes around the rear wall 8 of the box 2 without being guided to the opening 3 by the distribution plate 14. Next, the air guided to the rear wall 8 side by the second distribution plate 15 is combined with the air not distributed by the second distribution plate 15, and the side edge of the rear wall 8 side of the second distribution plate 15 is formed. And flows along the rear wall 8 through the space provided between the rear wall 8 and the rear wall 8.

The air flowing along the rear wall 8 hits the first distribution plate 14 disposed in contact with the rear wall 8 near the left side wall 4 of the box body 2, and the first distribution plate 14 causes the air to flow toward the opening 3. And is distributed to the opening 3 side through a space provided between the side edge of the first distribution plate 14 on the opening 3 side and the opening 3.

In the uniform flow blowing device according to the first embodiment configured as shown in FIG.
Air is sent into the inside of the box 2 by an air supply fan (not shown) connected to the air outlet, and the air velocity at each grid point divided into 100 mm square grids at the air outlet 13 100 mm away from the opening 3. Is measured.

FIG. 6 is a diagram showing the measurement points of the wind speed at the air outlet 13. There are a total of 45 measuring points of 5 × 9 horizontally, and the X-axis extends in the direction from right to left, that is, in the direction of sending out the air sent from the air inlet 5, with the center measuring point as the origin of the coordinates. The Z-axis is taken in a direction from the bottom to the top of the opening 3 of the box 2 in the vertical direction.

In the uniform flow blowing device of the first embodiment,
The measurement results of the wind speed at each measurement point are shown in FIGS. FIG. 7 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of Example 1, and the horizontal axis represents the X of the measurement point.
The coordinate position and the vertical axis represent the turbulence ratio (turbulence rate) obtained by dividing the wind speed measured at each measurement point by the average value of the measured wind speeds. FIG. 9 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of the first embodiment.

As shown in FIGS. 7 and 8, X = −0.
2, a maximum wind speed of 1.21 m / s is measured at a measurement point of Z = -0.2, and a minimum wind speed of 0.84 m / s is measured at a measurement point of X = -0.4 and Z = -0.1. Was. The average wind speed at 45 measurement points was 1.02 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence rate) is + 18.6%, and the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -17.6%. The wind speed was within ± 20% of the average wind speed, and a good uniform flow was formed. However, the speed difference between the measurement point at X = −0.1 m and the measurement point at X = −0.2 m is larger than the difference between the measurement points at other adjacent measurement points.

Hereinafter, for comparison with the uniform flow blowing device of the first embodiment, the shape and size of the box 2 are the same as those of the first embodiment, and the shape and size of the first distribution plate 14 disposed near the left side wall 4. Also, the arrangement position is the same as that of the first embodiment, the shape and dimensions of the second distribution plate 15 arranged near the air inlet 5 are the same as those of the first embodiment, and the arrangement position of the second distribution plate 15 faces the rear wall 8. The distance between the opening 3 side edge of the second distribution plate 15 and the opening 3 was gradually increased, and the wind speed was measured in the same manner as in Example 1.

FIG. 9 is a plan view showing the uniform flow blowing device of the second embodiment, and FIG. 10 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of the second embodiment. 1
1 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 2.

As shown in FIG. 9, the second distribution plate 15 is formed at a position 300 mm from the air inlet 5 and a side edge on the side of the opening 3 40 mm from the opening 3 (the side edge on the side of the rear wall 8 is connected to the rear wall 8). 8 to 135 mm apart). That is, the second embodiment
In the uniform flow blowing device of the first embodiment, the opening 3 side of the second distribution plate 15 is widely opened by 20 mm with respect to the device of the first embodiment, and is shifted to the rear wall 8 side.

As shown in FIGS. 10 and 11, X = −
Maximum wind speed 1.23m / at the measurement point of 0.2, Z = -0.2
s was measured, and a minimum wind speed of 0.84 m / s was measured at the measurement points of X = −0.4 and Z = −0.1. The average wind speed at 45 measurement points was 1.02 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence rate) is + 20.6%, and X = −0.2, Z = −0.
At one of the two measurement points, the turbulence rate is slightly over 20%. The ratio of the minimum wind speed to the average wind speed (turbulence rate) is -15.7%, and the wind speed at each of the 45 measurement points is approximately within ± 20% of the average wind speed. Was formed. However, there is no change in the tendency that the speed difference between the measurement point at X = −0.1 m and the measurement point at X = −0.2 m is larger than the difference between the measurement points at other adjacent measurement points.

FIG. 12 is a plan view showing the uniform flow blowing device of the third embodiment, and FIG. 13 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of the third embodiment. 14 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 3.

As shown in FIG. 12, the second distribution plate 15 is formed at a position 300 mm from the air inlet 5 and a side edge on the side of the opening 3 60 mm from the opening 3 (the side edge on the side of the rear wall 8 is connected to the rear wall 8). 8
(115 mm apart from). That is, the uniform flow blowing device of the third embodiment is different from that of the second embodiment in that:
Further, the opening 3 side of the second distribution plate 15 is widened by 20 mm wide and shifted to the rear wall 8 side.

As shown in FIGS. 13 and 14, X = −
Maximum wind speed 1.23m / at the measurement point of 0.2, Z = -0.2
s was measured, X = -0.1, Z = 0 and X = -0.
Minimum wind speed 0.84 at two measurement points of 1, Z = -0.1
m / s was measured. The average wind speed at 45 measurement points was 1.02 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence rate) is + 20.6%, and X = −0.2, Z = −0.
The tendency that the turbulence rate slightly exceeds 20% at one of the two measurement points is the same as in the second embodiment. Further, the ratio of the minimum wind speed to the average wind speed (turbulence rate) is -17.7%, and the wind speed at each of the 45 measurement points is within ± 20% of the average wind speed. Was formed.
However, there is no change in the tendency that the speed difference between the measurement point at X = −0.1 m and the measurement point at X = −0.2 m is larger than the difference between the measurement points at other adjacent measurement points.

FIG. 15 is a plan view showing an air blowing device of Comparative Example 1 in which a uniform flow intended by the present invention is not formed, and FIG. 16 is a view at each measurement point of the air blowing device of Comparative Example 1. 17 is a table showing wind speed measurement results at each measurement point of the air blowing device of Comparative Example 1. FIG.

As shown in FIG. 15, the second distribution plate 15 of the air blowing device of Comparative Example 1
mm, and the side edge on the opening 3 side is 80 mm from the opening 3
Open (open the side edge of the rear wall 8 side by 95 mm from the rear wall 8)
Are located. That is, the air blowing device of Comparative Example 1 is different from that of Example 3 in that the opening 3 side of the distribution plate 14 is further widened by 20 mm and is shifted to the rear wall 8 side.

As shown in FIGS. 16 and 17, X = −
The maximum wind speed is 1.19 m / at the measurement point of 0.2, Z = + 0.2.
s was measured, and a minimum wind speed of 0.84 m / s was measured at the measurement points of X = −0.1 and Z = 0. The average wind speed at 45 measurement points was 1.02 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence ratio) is + 16.7%, the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -22.5%, and X = -0.
The turbulence rate at the measurement point of 1, Z = 0 exceeds 20%. Therefore, the uniform flow aimed at by the present invention is not formed in Comparative Example 1. X = −0.1 m
The speed difference between the measurement point of X and the measurement point of X = −0.2 m is much larger than the difference between the measurement points of other adjacent measurement points.

According to the measurement results of Examples 1 to 3 and Comparative Example 1, the measurement point of X = −0.1 m and X = −0.2 m
The tendency that the speed difference between m and the measurement point is larger than the difference between other adjacent measurement points is that the distance between the side edge of the second distribution plate 15 on the opening 3 side and the opening 3 changes. Since it hardly changes even if it is performed, the width dimension b / 2 of the second distribution plate 15 =
It is considered that 175 mm is large.

Further, as the distance between the side edge of the second distribution plate 15 on the side of the opening 3 and the opening 3 is increased, the wind speed near the air inlet 5 (each measurement point at X = −0.4) increases. ing. This is considered because the arrangement position of the second distribution plate 15 is arranged at the center of the box 2 in the width direction.

As described above, when the width dimension of the second distribution plate 15 disposed near the air inlet 5 is b / 2 = 175 mm, the side edge of the second distribution plate 15 on the opening 3 side and the opening 3 The interval can be in the range of 20 mm to 60 mm. That is, the uniform flow blowing devices of the first to third embodiments form a favorable uniform flow.

In the following, for comparison with the uniform flow blowing device of the first embodiment, the shape of the box 2 is the same as that of the first embodiment, and the shape of the first distribution plate 14 arranged near the left side wall 4 is described below. The dimensions and the arrangement position are the same as those of the first embodiment. The arrangement position of the second distribution plate 15 arranged near the air inlet 5 from the air inlet 5 is the same as that of the first embodiment. Is gradually changed so as to be smaller, and the side edge on the rear wall 8 side of the second distribution plate 15 is 155 mm from the same rear wall 8 as in the first embodiment.
The second distribution plate 15 was arranged open, the interval between the side edge of the second distribution plate 15 on the opening 3 side and the opening 3 was gradually increased, and the wind speed was measured in the same manner as in Example 1.

FIG. 18 is a plan view showing the uniform flow blowing device of the fourth embodiment, and FIG. 19 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of the fourth embodiment. Reference numeral 20 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 4.

As shown in FIG. 18, the second distribution plate 15 has a width of 155 mm,
mm and the side edge on the opening 3 side is 40 mm from the opening 3
It is arranged to be opened (a side edge on the rear wall 8 side is opened by 155 mm from the rear wall 8). That is, in the uniform flow blowing device of the fourth embodiment, the width of the second distribution plate 15 is reduced by 20 mm as compared with the second distribution plate of the first embodiment, and the interval between the openings 3 of the second distribution plate is set to 20 mm. It is only wide open.

As shown in FIGS. 19 and 20, X = −
The maximum wind speed is 1.21 m / at the measurement point of 0.2, Z = -0.2.
s was measured, and a minimum wind speed of 0.85 m / s was measured at the measurement points of X = −0.4 and Z = −0.1. The average wind speed at 45 measurement points was 1.04 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence rate) is + 16.3%, and the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -18.3%. The wind speed was within ± 20% of the average wind speed, and a good uniform flow was formed. However, the speed difference between the measurement point at X = −0.1 m and the measurement point at X = −0.2 m is slightly smaller than in the first embodiment.

FIG. 21 is a plan view showing the uniform flow blowing device of the fifth embodiment, and FIG. 22 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of the fifth embodiment. 23 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 5.

As shown in FIG. 21, the second distribution plate 15 has a width of 135 mm,
mm, and the side edge on the opening 3 side is 60 mm from the opening 3
It is arranged to be opened (a side edge on the rear wall 8 side is opened by 155 mm from the rear wall 8). That is, in the uniform flow blowing device of the fifth embodiment, the width of the second distribution plate 15 is further reduced by 20 mm as compared with the second distribution plate of the fourth embodiment, and the interval between the openings 3 of the second distribution plate is reduced. It is arranged wide open by 20 mm.

As shown in FIGS. 22 and 23, X = 0.
2. A maximum wind speed of 1.13 m / s was measured at the measurement point of Z = 0.2, and a minimum wind speed of 0.81 m / s was measured at the measurement point of X = −0.4, Z = −0.1. . The average wind speed at 45 measurement points was 0.98 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence rate) is + 15.3%, and the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -17.3%. The wind speed was within ± 20% of the average wind speed, and a good uniform flow was formed. However, the speed difference between the measurement point of X = −0.1 m and the measurement point of X = −0.2 m is slightly smaller than that of the fourth embodiment.

FIG. 24 is a plan view showing the uniform flow blowing device of the sixth embodiment, and FIG. 25 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of the sixth embodiment. 26 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 6.

As shown in FIG. 24, the distribution plate 14 has a width of 115 mm, and is 300 mm from the air inlet 5.
And the side edge on the opening 3 side is opened 80 mm from the opening 3 (the side edge on the rear wall 8 side is opened 155 mm from the rear wall 8). That is, in the uniform flow blowing device of the sixth embodiment, the width of the second distribution plate 15 is further reduced by 20 mm as compared with the second distribution plate of the fifth embodiment, and the interval between the openings 3 of the second distribution plate is reduced. It is arranged wide open by 20 mm.

As shown in FIGS. 25 and 26, X = 0.
The maximum wind speed of 1.16 m / s was measured at the measurement points of 4, Z = 0.1, and the minimum wind speed of 0.82 m / s was measured at the measurement points of X = −0.4, Z = −0.1. . The average wind speed at 45 measurement points was 1.00 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence rate) is + 16.3%, and the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -18.0%. The wind speed was within ± 20% of the average wind speed, and a good uniform flow was formed. However, the speed difference between the measurement point at X = −0.1 m and the measurement point at X = −0.2 m is slightly smaller than that in the fifth embodiment.

FIG. 27 is a plan view showing the uniform flow blowing device of the seventh embodiment, and FIG. 28 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of the seventh embodiment. 29 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 7.

As shown in FIG. 27, the second distribution plate 15 has a width of 95 mm, and is 300 m from the air inlet 5.
m, and the side edge on the opening 3 side is 100 mm from the opening 3
It is arranged to be opened (a side edge on the rear wall 8 side is opened by 155 mm from the rear wall 8). That is, in the uniform flow blowing device of the seventh embodiment, the width of the second distribution plate is further reduced by 20 mm as compared with the second distribution plate of the sixth embodiment, and the interval between the openings 3 of the second distribution plate is set to 20 mm. It is only wide open.

As shown in FIGS. 28 to 29, X = 0.
4, a maximum wind speed of 1.17 m / s was measured at a measurement point of Z = 0.1, and a measurement point of X = −0.4, Z = −0.1, X = −
0.1, Z = 0 measurement point and X = -0.1, Z = -0.
A minimum wind speed of 0.83 m / s was measured at three measurement points (1). The average wind speed at 45 measurement points is 1.00 m
/ S.

The ratio of the maximum wind speed to the average wind speed (turbulence rate) is + 17.3%, and the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -17.0%. The wind speed was within ± 20% of the average wind speed, and a good uniform flow was formed. However, the speed difference between the measurement point at X = −0.1 m and the measurement point at X = −0.2 m is slightly smaller than that in the sixth embodiment.

FIG. 30 is a plan view showing the uniform flow blowing device of the eighth embodiment, and FIG. 31 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of the eighth embodiment. 32 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 8.

As shown in FIG. 30, the second distribution plate 15 has a width of 75 mm, and is 300 m from the air inlet 5.
m, and the side edge on the opening 3 side is 100 mm from the opening 3
It is arranged to be opened (a side edge on the rear wall 8 side is opened by 155 mm from the rear wall 8). That is, in the uniform flow blowing device of the eighth embodiment, the width dimension of the second distribution plate 15 is further reduced by 20 mm as compared with the second distribution plate of the seventh embodiment, and the interval between the openings 3 of the second distribution plate is reduced. It is arranged wide open by 20 mm.

As shown in FIGS. 31 and 32, X = 0.
4, a maximum wind speed of 1.18 m / s was measured at a measurement point of Z = 0.1 and a measurement point of X = 0.4, Z = 0.2, and X = −
0.4, Z = -0.1 and X = -0.1, Z = 0
A minimum wind speed of 0.83 m / s was measured at the measurement point. The average wind speed at 45 measurement points was 1.00 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence rate) is + 18.0%, and the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -17.0%. The wind speed was within ± 20% of the average wind speed, and a good uniform flow was formed.

When the results of Examples 5 to 8 are compared, the turbulence rate falls within the range of 15% to 18% in any of Examples. In the case where the distance between the opening 3 and the side edge of the second distribution plate 15 disposed closer to the air inlet 5 and the opening 3 is gradually increased, the air delivery direction side (the left side wall 4 side) ) Is gradually getting faster.

FIG. 33 is a plan view showing an air blowing device of Comparative Example 2 in which a uniform flow aimed at by the present invention is not formed, and FIG. 34 is a view at each measurement point of the air blowing device of Comparative Example 2. FIG. 35 is a table showing wind speed measurement results at each measurement point of the air blowing device of Comparative Example 2.

As shown in FIG. 33, the second distribution plate 15 of the air blowing device of Comparative Example 2 has a width of 55 mm, a position 300 mm from the air inlet 5 and an opening 3.
The side edge on the side is opened 140 mm from the opening 3 (the side edge on the rear wall 8 side is opened 155 mm from the rear wall 8). That is, in the air blowing device of Comparative Example 2, the width dimension of the second distribution plate is further reduced by 20 mm and the interval between the openings 3 of the second distribution plate is widened by 20 mm as compared with that of Example 8. I have.

As shown in FIGS. 34 and 35, X = 0.
A maximum wind speed of 1.22 m / s was measured at the measurement point of 4,4 = Z = 0.2, and a minimum wind speed of 0,2 m / s was measured at the measurement point of X = −0.3, Z = 0.
80 m / s was measured. The average wind speed at 45 measurement points was 0.99 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence ratio) is + 23.2%, the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -19.2%, and X = 0.4, Z = 0.2 measurement point and X =
The turbulence rate at the measurement points of 0.4 and Z = 0.1 exceeds 20%. Therefore, the uniform flow aimed at by the present invention is not formed by Comparative Example 2. This is because
This is probably because the width of the distribution plate 14 arranged near the air inlet 5 is small from the beginning.

According to the measurement results of Examples 5 to 8 and Comparative Example 2, the width dimension of the second distribution plate 15 arranged near the air inlet 5 was changed, and the side edge on the rear wall 8 side was changed. When the opening is provided 155 mm from the rear wall 8 and the interval between the opening 3 and the side edge of the second distribution plate 15 on the opening side is increased, the second distribution plate 15
The distance between the side edge on the side of the opening 3 and the opening 3 can be about 20 mm to 120 mm. That is, the uniform flow blowing devices of the fifth to eighth embodiments form a favorable uniform flow.

For comparison, in the case of a perforated plate and a honeycomb-shaped rectifying grid which are conventional general rectifying methods, that is, from the uniform flow blowing device 1 of the first embodiment to the first distribution plate 14 and the In the case of Comparative Example 3 shown in FIG. 36 from which the second distribution plate 15 has been removed, air is sent by an air supply fan connected to the air inlet 5, and air is blown from the air outlets 13 to 10.
At a position separated by 0 mm, the wind speed was measured in the same manner as in Example 1.

FIG. 37 is a graph showing the wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 3, and FIG.
6 is a table showing wind speed measurement results at each measurement point of the air flow blowing device of Comparative Example 3.

The wind speed of each of the 45 measurement points is slow on the right side of the opening 3 on the air inlet 5 side, and fast on the tip side (the left side wall 4 side) in the air sending direction. There is a clear bias that the left side of the is fast, and it is hard to say that it is a uniform flow. Further, both the maximum wind speed (1.29 m / s) and the minimum wind speed (0.74 m / s) are the average wind speed (1.0 m / s).
0 m / s) exceeds ± 20%. In order to create a flow with less disturbance using only the perforated plate and the rectifying grid, the number of perforated plates must be four, five, and so on. In this case, there is a problem that the blowing resistance increases.

On the other hand, in the uniform flow blowing device of the present invention, since one or two perforated plates are sufficient, the resistance is reduced. Therefore, since no load is applied to the air supply fan, the running cost can be reduced.

For comparison, the wind speed was measured in the same manner as in Example 1 for an air blowing device having one distribution plate. FIG. 39 is a plan view of an air flow blowing device of Comparative Example 4 using one distribution plate. The shape and dimensions of the box are the same as those in the first embodiment. The distribution plate has a width of 175 mm, which is ２ of the width (350 mm) of the box 2. The distribution plate is arranged at the center of the box 2, that is, at a position 500 mm from the air inlet 5 and at a distance of 500 m from the left side wall 4.
m and the side edge on the opening 3 side is 87.5 from the opening 3
mm.

In the case of Comparative Example 2 shown in FIG. 39, air is sent by an air supply fan connected to the air inlet 5 and the wind speed is measured at a position 100 mm away from the air outlet 13 in the same manner as in Example 1. did.

FIG. 40 is a graph showing the wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 4, and FIG.
9 is a table showing wind speed measurement results at each measurement point of the air flow blowing device of Comparative Example 4.

As shown in FIGS. 39 to 40, the wind speed of each of the 45 measurement points is slow on the right side of the opening 3 on the air inlet 5 side, and on the left and right sides of the center of the opening where the distribution plate is arranged. Although it is slow, the central part is fast, and the tip side in the air sending direction is the fastest, that is, the left side of the opposite opening 3 is the fastest, and it is hard to say that it is a uniform flow. Furthermore, the maximum wind speed (1.39 m / s) and the minimum wind speed (0.7
0 m / s) greatly exceeds ± 20% with respect to the average wind speed (1.00 m / s). In addition, the result of Comparative Example 4 was compared with the result of Comparative Example 3 in which no distribution plate was provided.
Rather, the bias of the wind speed is increasing.

Next, the second embodiment of the uniform flow blowing device of the present invention will be described.
An embodiment will be described. The second embodiment is an embodiment in which the number of distribution plates is three. FIG. 42 is an example (Example 9) of the second embodiment of the uniform flow blowing device.
FIG. The shape and dimensions of the box 2 are the same as those of the first embodiment shown in FIG. The air inlet 5 of the box 2
Are also the same as in the first embodiment.

For the sake of description, as shown in FIG. 42, the distribution plate disposed closest to the left side wall 4 of the box 2 inside the box 2 is referred to as a first distribution plate 16, and The distribution plate arranged at the center is the second distribution plate 17, and the distribution plate arranged closest to the air inlet 5 of the box 2 is the third distribution plate 1.
6 is assumed.

As shown in FIG. 42, in the ninth embodiment, the first distribution plate 16, the second distribution plate 17, and the third distribution plate 1
8 is １ ／ of the width (350 mm) of the box 2
Is 175 mm in width. The first distribution plate 16 is positioned 700 mm from the air inlet 5 (the distance from the left side wall 4 is 300 m).
m), and the side edge on the rear wall 8 side is arranged in contact with the rear wall 8. The second distribution plate 17 is located at the center in the horizontal direction of the box 2, that is, at a position 500 mm from the air inlet 5 (the second distribution plate 1).
7 is 200 mm), and the side edge of the second distribution plate 17 on the opening 3 side is opened 87.5 mm from the opening 3 (the side edge on the rear wall 8 side is opened 87.5 mm from the rear wall 8). Have been. The third distribution plate 18 is positioned 200 mm from the air inlet 5 (the distance from the first distribution plate 16 is 300 mm), and the side edge on the opening 3 side is aligned with the opening 3 (the side edge on the rear wall 8 side is (Open 175 mm from the rear wall 8).

As shown in FIG. 42, when viewed from the direction in which air is sent out from the air inlet 5, the first
The side edge of the distribution plate 16 on the opening 3 side and the rear wall 8 of the second distribution plate 17
The second distribution plate 17 is arranged so as not to separate from the side edge on the side, and the side edge on the opening 3 side of the second distribution plate 17 is separated from the side edge on the rear wall 8 side of the third distribution plate 18. The third distribution plate 18 is arranged so as not to cause any trouble.

The first distribution plate 16, the second distribution plate 17, and the third
The operation of the distribution plate 18 will be described. In FIG.
The third distribution plate 18 guides a part of the air sent from the right air inlet 5 toward the right side of the opening 3. Note that, of the air sent from the air inlet 5, air not guided to the opening 3 by the third distribution plate 18 is sent along the rear wall 8 side of the box 2.

Next, this air is distributed to the rear wall 8 side and the opening 3 side by the second distribution plate 17 arranged in the middle of the box 2. The air distributed to the opening 3 side is supplied to the second distribution plate 1.
7 is guided toward the opening 3 through a space between the side edge of the opening 3 on the side of the opening 3 and the opening 3. Further, the air distributed to the rear wall 8 side is combined with the air not distributed by the second distribution plate 17, and the air between the side edge of the rear wall 8 side of the second distribution plate 17 and the rear wall 8 is formed. It is fed along the rear wall 8 through the gap.

The air sent along the rear wall 8 is
The closest to the rear wall 8 and placed in contact with the rear wall 8
The opening 3 is guided to the opening 3 side by the distribution plate 16 and passes through the gap between the opening 3 side edge of the first distribution plate 16 and the opening 3.
Flows towards

In the uniform flow blowing device of the ninth embodiment shown in FIG. 42, air is sent by an air supply fan connected to the air inlet 5, and the same method as that of the first embodiment is used at a position 100 mm away from the air outlet 13. The wind speed was measured.

FIG. 43 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of the ninth embodiment.
19 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 9.

As shown in FIGS. 43 to 44, X = 0.
4, a maximum wind speed of 1.09 m / s was measured at a measurement point of Z = 0, and a minimum wind speed of 0.86 was measured at a measurement point of X = −0.3 and Z = 0.
m / s was measured. The average wind speed at 45 measurement points was 1.00 m / s. The ratio of the maximum wind speed to the average wind speed (turbulence rate) is + 9%, the ratio of the minimum wind speed to the average wind speed (turbulence rate) is -14%, and the wind speed at each of the 45 measurement points is higher than the average wind speed. Thus, a good uniform flow was formed.

FIG. 45 shows an example 10 according to the second embodiment.
It is a top view which shows the uniform flow blowing apparatus of FIG. The shape and dimensions of the box 2 are all the same as those of the first embodiment. As shown in FIG. 45, in the tenth embodiment, the first
The distribution plate 16, the second distribution plate 17, and the third distribution plate 18 are all of the same shape and size, and the width of the box 2 (b = 3
The width is 117 mm, which is ３ of 50 mm). As in the ninth embodiment, the first distribution plate 16 is 700 m from the air inlet 5.
The third distribution plate 16 is disposed such that the side edge of the third distribution plate 16 on the side of the rear wall 8 is in contact with the rear wall 8 at a position m (a distance from the left side wall 4 is 300 mm).

The second distribution plate 17 is provided between the air inlets 5 and 50.
0 mm (the middle of the left side wall 4 and the air inlet 5, the interval between the first distribution plate 16 is 200 mm), and the rear wall 8
The openings 3 are arranged at equal intervals between the side edge of the side and the rear wall 8 and between the side edge of the opening 3 and the opening 3.

The third distribution plate 18 is provided between the air inlets 5 to 20.
0 mm position (the distance from the second distribution plate 17 is 300 m
m) and the side edge on the opening side is aligned with the opening 3 (the side edge on the rear wall 8 side is opened by 233 mm from the rear wall 8).

As shown in FIG. 45, also in the tenth embodiment, when seen through from the sending direction of the air sent out from the air inlet 5, the side edge of the first distribution plate 16 on the opening 3 side and the second distribution plate 17 The second distribution plate 17 is arranged so that the side edge on the rear wall 8 side does not separate from the side wall on the opening 3 side of the second distribution plate 17 and the side on the rear wall 8 side of the third distribution plate 18. The third distribution plate 18 is arranged so as not to separate from the edge.

The method of measuring the wind speed is the same as in the first embodiment. FIG. 46 is a graph showing a wind speed distribution at each measurement point of the uniform flow blowing device of Example 10; FIG. 47 is a wind speed measurement result at each measurement point of the uniform flow blowing device of Example 10; FIG.

As shown in FIGS. 46 to 47, X = 0.
4, a maximum wind speed of 1.17 m / s was measured at the measurement point of Z = 0, and the measurement point of X = −0.4, Z = 0 and X = −0.4,
A minimum wind speed of 0.82 m / s was measured at a measurement point of Z = 0.1. The average wind speed at 45 measurement points is 1.01 m
/ S.

The ratio of the maximum wind speed to the average wind speed (turbulence rate) is + 15.8%, and the ratio of the minimum wind speed to the average wind speed (turbulence rate) is -18.8%. The wind speed was within ± 20% of the average wind speed, and a uniform flow was formed. However, the right side of the opening 3 which is the air inlet 5 side is slow, and the tip side (the left side wall 4 side) in the air sending direction (inflow direction) is fast, that is, the left side of the opposite opening 3 tends to be fast. I have. It is considered that the reason for this is that the width of the third distribution plate 18 is smaller than the width b of the box 2, so that the amount of air guided to the opening 3 by the third distribution plate 18 is small.

FIG. 48 shows Example 1 of the second embodiment.
It is a top view which shows one uniform flow blowing apparatus. FIG.
FIG. 50 is a graph showing a wind speed distribution at each measurement point of the uniform flow blowing device of Example 11; FIG. 50 shows a wind speed measurement result at each measurement point of the uniform flow blowing device of Example 11; It is a table.

The shape and dimensions of the box 2 are all the same as those of the first embodiment. As shown in FIG. 48, in the eleventh embodiment, the first distribution plate 16 has a width of 117 mm, which is ３ of the width (350 mm) of the box 2, and is located 700 mm from the air inlet 5 (the left side wall). 30 with 4
0 mm), and the first distribution plate 16 is arranged such that the side edge on the rear wall 8 side is in contact with the rear wall 8.

The second distribution plate 17 has a width dimension (35
0 mm) and the width of the air inlet 5 is 175 mm.
(The center between the left side wall 4 and the air inlet 5 and the distance between the first distribution plate 16 is 200 mm), and between the side edge on the rear wall 8 side and the rear wall 8 and on the opening 3 side. The gaps (87.5 mm) are equally spaced between the side edges and the opening 3.

The third distribution plate 18 has a width dimension (b = b) of the box 2.
The width is 87.5 mm, which is ４ of 350 mm), 200 mm from the air inlet 5, and the side edge on the opening side is opened 30 mm from the opening 3 (the side edge on the rear wall 8 side is 2
32.5 mm apart).

The measuring method of the wind speed is the same as that of the first embodiment. As shown in FIGS. 49 to 50, a maximum wind speed of 1.17 m / s was measured at the measurement points of X = 0 and Z = 0, and X = −
Minimum wind speed of 0.86 m / s at measurement points of 0.4 and Z = 0.1
Was measured. The average wind speed at 45 measurement points is:
0.99 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence rate) is + 18.2%, and the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -13.1%. The wind speed was within ± 20% of the average wind speed, and a good uniform flow was formed.

For comparison, the air velocity was measured in the same manner as in Example 1 except that the width and arrangement of the distribution plates were changed for an air blowing device having three distribution plates. FIG. 51 is a plan view of the air flow blowing device of Comparative Example 5.

The shape and dimensions of the box 2 are all the same as those of the first embodiment. As shown in FIG. 51, in Comparative Example 5, three distributing plates are arranged at a distance from each other with respect to the opening 3 of the box body 2 at right angles to the opening 3 and with side edges aligned with the opening 3. , The third distribution plate 18 and the second distribution plate 1 are sequentially directed toward the rear wall 8 as the distance from the air inlet 5 increases.
7. The width of the first distribution plate 16 is extended. The third distribution plate 18 is １ ／ of the width of the box 2 (b = 350 mm)
The second distribution plate 17 has a width of 175 mm, which is ２ of the width of the box 2 (b = 350 mm).
The first distribution plate 16 has a width of 233 mm larger than the width of the box 2 (b = 350 mm).

In the air blowing device of Comparative Example 4, air was sent by an air supply fan connected to the air inlet 5, and the wind speed was measured at a position 100 mm away from the air outlet 13 in the same manner as in Example 1. .

FIG. 52 is a graph showing the wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 5, and FIG.
9 is a table showing wind speed measurement results at each measurement point of the air flow blowing device of Comparative Example 5.

As shown in FIGS. 52 to 53, X = 0.
2. A maximum wind speed of 1.15 m / s was measured at a measurement point of Z = 0, and a minimum wind speed of 0.83 m / s was measured at a measurement point of X = −0.4 and Z = −0.2. The average wind speed at 45 measurement points was 1.01 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence rate) is + 13.9%, and the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -17.8%. The wind speed is within ± 20% of the average wind speed. However, there is a clear tendency that the right side of the opening 3, which is the side of the air inlet 5, is slow and the tip side in the air sending direction is fast, that is, the left side of the opposite opening 3 is fast.

For comparison, the air blow-off devices of Comparative Examples 5 to 9 were prepared, and the wind velocities were measured in the same manner as in Example 1.

In the air flow blowing device of Comparative Example 6 shown in FIG. 54, all of the first to third distribution plates 16 to 18 have the same shape and size, that is, the width of the three distribution plates is set to the width of the box. b (= 350 mm), the width of which is 175 mm,
The arrangement positions of the third to third distribution plates from the air inlet 5 are the same as those of the first embodiment, and the three distribution plates 16, 17, and 18 are arranged such that the centers of the widths are aligned. FIG. 55 is a graph showing a wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 6, and FIG. 56 is a wind speed measurement result at each measurement point of the air flow blowing device of Comparative Example 6. FIG.

As shown in FIGS. 55 to 56, X = 0.
2. A maximum wind speed of 1.09 m / s was measured at the measurement point of Z = 0, and a minimum wind speed of 0.81 was measured at the measurement point of X = −0.1 and Z = 0.
m / s was measured. The average wind speed at 45 measurement points was 1.00 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence ratio) is + 9%, the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -19%, and the wind speed at each of the 45 measurement points is an average. It is within ± 20% of the wind speed. However, each measurement point of X = −0.1, that is, the third distribution plate 18
And the second distribution plate 17 has an extremely low wind speed. It is considered that this is because the width of the third distribution plate 18 disposed closest to the air inlet 5 is largest.

In the air blow-off device of Comparative Example 7 shown in FIG. 57, all the three distribution plates of the first distribution plate 16 to the third distribution plate 18 have the same shape and size. Is set to 117 mm, which is 1/3 of the width b (= 350 mm) of the box, and the arrangement positions of the first to third distribution plates from the air inlet 5 are the same as those in the first embodiment. The center of the width of the three distribution plates is aligned with the center line connecting the widthwise centers of the boxes 2. FIG. 58
FIG. 59 is a graph showing a wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 7, and FIG. 59 is a table showing wind speed measurement results at each measurement point of the air flow blowing device of Comparative Example 7. It is.

As shown in FIGS. 58 to 59, X = 0.
2. A maximum wind speed of 1.13 m / s was measured at a measurement point of Z = 0, and a minimum wind speed of 0.77 m / s was measured at a measurement point of X = −0.4 and Z = −0.1. The average wind speed at 45 measurement points was 1.01 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence ratio) is + 11.9%, the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -23.8%, and ± 20% of the average wind speed. That is all, and it is hard to say that it is a uniform flow. Considering the measurement results of Comparative Example 7 together,
It is considered that there is a problem in the arrangement position of the distribution plate 18 in the width direction of the box 2.

In the air blowing device of Comparative Example 8 shown in FIG. 60, all three distribution plates of the first distribution plate 16 to the third distribution plate 18 have the same shape and size, ie, the width of the three distribution plates. Is a quarter of the width dimension b (= 350 mm) of the box 87.
The position of the first to third distribution plates from the air inlet 5 is set to the same position as in the first embodiment, and the three distribution plates are arranged on a center line connecting the center of the box body 2 in the width direction. The center of the width of the plate is aligned. FIG. 61 is a graph showing a wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 8, and FIG. 62 is a wind speed measurement result at each measurement point of the air flow blowing device of Comparative Example 8. FIG.

As shown in FIGS. 61 to 62, X = 0.
The maximum wind speed of 1.15 m / s was measured at the measurement points of 4, Z = 0.2, and the minimum wind speed of 0.75 m / s was measured at the measurement points of X = −0.4, Z = −0.1. . The average wind speed at 45 measurement points was 1.01 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence ratio) is + 13.8%, the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -25.7%, and ± 20% of the average wind speed. That is all, and it is hard to say that it is a uniform flow. In addition, considering the measurement results of Comparative Examples 6 to 8, even if the width of the distribution plate is changed, there is no change in the speed distribution, and therefore, the arrangement position of the third distribution plate 18 in the width direction of the box 2. It is considered that there is a problem.

In the air blowing device of Comparative Example 9 shown in FIG. 63, the width of the first distribution plate 16 is changed to the width dimension b of the box (= 350).
mm), and the width of the second distribution plate 17 is set to be 1/3 of the width b (= 350 mm) of the box 2.
17 mm, and the width of the third distribution plate 18 is set to the width b of the box 2.
(= 350 mm) 1/4 of the width of 87.5 mm.
The positions of the three distribution plates from the air inlet 5 to the distribution plates 16 to the third distribution plate 18 are the same as those in the first embodiment. The distribution plate is arranged so that the center of the width is aligned. FIG. 64
FIG. 65 is a graph showing a wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 9; and FIG. 65 is a table showing wind speed measurement results at each measurement point of the air flow blowing device of Comparative Example 9. It is.

As shown in FIGS. 64 to 65, X = 0.
The maximum wind speed of 1.15 m / s was measured at the measurement point of 1, Z = 0.2, and the minimum wind speed of 0.75 m / s was measured at the measurement point of X = -0.4, Z = -0.1. . The average wind speed at 45 measurement points was 1.01 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence ratio) is + 13.9%, the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -25.7%, and ± 20% of the average wind speed. That is all, and it is hard to say that it is a uniform flow. In addition, when the measurement results of Comparative Examples 6 to 8 are considered together, even if the widths of the first distribution plate 16, the second distribution plate 17, and the third distribution plate 17 are changed, there is no change in the velocity distribution. It is considered that there is a high possibility that there is a problem in the arrangement position of the third distribution plate 18 in the width direction of the box 2.

In the air blowing device of Comparative Example 10 shown in FIG. 66, all the three distribution plates of the first distribution plate 16 to the third distribution plate 18 have the same shape and size, that is, the width of the three distribution plates. Is 8 times 1/4 of the width b (= 350 mm) of the box.
The position of the first to third distribution plates is the same as that of the first embodiment.
Is arranged such that the side edge on the rear wall 8 side of the third distribution plate 18 is in contact with the rear wall 8, and the second distribution plate 17
The third distribution plate 18 has a side edge on the opening 3 side aligned with the opening 3.

The difference between the comparative example 10 and the embodiment 9 shown in FIG. 42, the embodiment 10 shown in FIG. 45 and the embodiment 11 shown in FIG. However, when viewed from the sending direction of the air sent from the air inlet 5, the side edge of the first distribution plate 16 on the opening 3 side and the side edge of the second distribution plate 17 on the rear wall 8 side are not separated from each other. The side edge on the opening 3 side of the second distribution plate 17 and the side edge on the rear wall 8 side of the third distribution plate 18 are not separated from each other. When viewed from the sending direction of the air to be sent out, the side edge on the opening 3 side of the first distribution plate 16 and the side edge on the rear wall 8 side of the second distribution plate 17 are separated from each other. Opening 3 side edge and first edge
This is the point that the side edge on the rear wall 8 side of the distribution plate 16 is separated.

FIG. 67 is a graph showing the wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 10. FIG. 68 is a graph showing the wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 10. It is the table | surface which showed the wind speed measurement result.

As shown in FIGS. 67 to 68, X =
The maximum wind speed of 1.21 m / s was measured at the measurement points of 0.4 and Z = 0, and the minimum wind speed of 0.11 m / s was measured at the measurement points of X = −0.4 and Z = 0.
81 m / s was measured. The average wind speed at 45 measurement points was 1.02 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence ratio) is + 18.6%, the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -20.6%, and ± 20% of the average wind speed. That's it. The reason for this is that the width of the first distribution plate 16 is too small with respect to the width of the box, and when viewed from the direction in which the air sent out from the air inlet 5 is sent out, the rear wall 8 of the third distribution plate 18 is not seen. The point that the side edge on the side of the second distribution plate 17 and the side edge on the side of the opening 3 of the second distribution plate 17 are separated from each other is considered that the amount of air guided toward the opening 3 by the third distribution plate 18 is extremely small. .

Next, the third embodiment of the uniform flow blowing device of the present invention will be described.
An embodiment will be described. Note that the third embodiment is an embodiment in which the number of distribution plates is four. FIG. 69 is a plan view showing Example 12 of the third embodiment of the uniform flow blowing device. The shape and dimensions of the box 2 are the same as those of the first embodiment shown in FIG. The air inlet 5 of the box 2 is the same as that of the first embodiment.

For the sake of explanation, as shown in FIG. 69, the distribution plate disposed closest to the left side wall 4 of the box 2 inside the box 2 is referred to as a first distribution plate 19, and The distribution plate disposed substantially on the left side of the center is referred to as a second distribution plate 20, and the distribution plate disposed substantially on the right side of the center of the box 2 is referred to as the third distribution plate 2.
1, and the distribution plate arranged closest to the air inlet 5 of the box 2 is the fourth distribution plate 22.

As shown in FIG. 69, in the twelfth embodiment, the first distribution plate 19 has a width of 117 mm, which is の of the width (350 mm) of the box 2, and the second distribution plate 20 has a width of 117 mm.
The third distribution plate 21 has a width 140 mm, which is の of the width (350 mm) of the box 2, and the fourth distribution plate 22 has a width 140 mm, which is の of the width (350 mm) of the box 2.
The width is 87.5 mm, which is ４ of the width (350 mm).

The first distribution plate 19 is provided between the air inlet 5 and the air inlet 5.
It is arranged at a position of 0 mm (the distance from the left side wall 4 is 200 mm), and the side edge on the rear wall 8 side is in contact with the rear wall 8. The second distribution plate 20 is located at a position 600 mm from the air inlet 5 (the distance from the first distribution plate 19 is 200 mm), and the side edge of the second distribution plate 20 on the opening 3 side is opened 175 mm from the opening 3 (afterward). The side edge on the wall 8 side is opened 35 mm from the rear wall 8).

The third distribution plate 21 is provided between the air inlets 5 and 40.
0 mm position (the distance from the second distribution plate 20 is 200 m
m), and the side edge on the opening 3 side of the third distribution plate 21 is opened by 35 mm from the opening 3 (the side edge on the rear wall 8 side is 175 mm from the rear wall 8).
mm open). The fourth distribution plate 22 is located at a position 200 mm from the air inlet 5 and at a side edge on the side of the opening 3 at a distance of 30 mm from the opening 3 (a side edge on the side of the rear wall 8 is 232.5 mm from the rear wall 8). T) is located.

In the uniform flow blowing device of the twelfth embodiment shown in FIG. 69, air is sent by an air supply fan connected to the air inlet 5, and the same method as that of the first embodiment is used at a position 100 mm away from the air outlet 13. The wind speed was measured.

FIG. 70 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of Example 12;
1 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 12.

As shown in FIGS. 70 to 71, X = 0.
4, a maximum wind speed of 1.20 m / s is measured at a measurement point of Z = 0, and X = −0.2, a measurement point of Z = 0 and X = −0.2,
A minimum wind speed of 0.85 m / s was measured at a measurement point of Z = −0.2. The average wind speed at 45 measurement points is 1.02
m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence rate) was + 17.6%, and the ratio of the minimum wind speed to the average wind speed (turbulence ratio) was -16.7%. The wind speed was within ± 20% of the average wind speed, and a good uniform flow was formed.

FIG. 72 shows Example 1 of the third embodiment.
It is a top view which shows the 3 uniform flow blowing apparatus. The shape and dimensions of the box 2 are all the same as those of the first embodiment.

As shown in FIG. 72, in the thirteenth embodiment, the first distribution plate 19 is larger than that in the twelfth embodiment.
Width 175 mm, which is half of the width (350 mm) of the box 2
There is. The second distribution plate 20 has a width dimension (350
mm) and 140 mm in width, which is ／ of the third distribution plate 21.
Is 140m, 2/5 of the width of the box 2 (350mm)
m, and the fourth distribution plate 22 has a width dimension (350 m
m), which is ８７ of the width of 87.5 mm, which are the same as those in the previous Example 12.

The first distribution plate 19 is provided between the air inlets 5 and 80.
It is arranged at a position of 0 mm (the distance from the left side wall 4 is 200 mm), and the side edge on the rear wall 8 side is in contact with the rear wall 8. The second distribution plate 20 is located at a position 600 mm from the air inlet 5 (the distance from the first distribution plate 19 is 200 mm), and the side edge of the second distribution plate 20 on the opening 3 side is opened 175 mm from the opening 3 (afterward). The side edge on the wall 8 side is opened 35 mm from the rear wall 8).

The third distribution plate 21 is provided between the air inlets 5 and 40.
0 mm position (the distance from the second distribution plate 20 is 200 m
m), and the side edge on the opening 3 side of the third distribution plate 21 is opened by 35 mm from the opening 3 (the side edge on the rear wall 8 side is 175 mm from the rear wall 8).
mm open). The fourth distribution plate 22 is positioned 200 mm from the air inlet 5 (the distance from the third distribution plate 21 is 200 mm), and the side edge on the opening 3 side is 3 to 3 mm from the opening 3.
0 mm apart (the side edge on the rear wall 8 side is
32.5 mm apart).

In the uniform flow blowing apparatus of Embodiment 13 shown in FIG. 72, air is sent by an air supply fan connected to the air inlet 5 and the same method as in Embodiment 1 is performed at a position 100 mm away from the air outlet 13. The wind speed was measured.

FIG. 73 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of the thirteenth embodiment.
FIG. 4 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 13.

As shown in FIGS. 72 to 74, X = 0.
4, a maximum wind speed of 1.15 m / s was measured at a measurement point of Z = -0.2, and a minimum wind speed of 0.86 m / s was measured at a measurement point of X = -0.2 and Z = 0. The average wind speed at 45 measurement points was 1.02 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence rate) is + 12.7%, and the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -15.7%. The wind speed was within ± 20% of the average wind speed, and a good uniform flow was formed.

FIG. 75 shows Example 1 of the third embodiment.
It is a top view which shows the 4 uniform flow blowing apparatus. The shape and dimensions of the box 2 are all the same as those of the first embodiment. As shown in FIG. 75, in the fourteenth embodiment, the first distribution plate 19, the second distribution plate 20, the third distribution plate 21, and the fourth distribution plate 22 all have the same shape and size. 117mm width, 1/3 of the width (b = 350mm)
It is.

The first distribution plate 19 is provided between the air inlets 5 and 80.
It is arranged at a position of 0 mm (the distance from the left side wall 4 is 200 mm), and the side edge on the rear wall 8 side is in contact with the rear wall 8. The second distribution plate 20 is located at a position 600 mm from the air inlet 5 (the distance from the first distribution plate 19 is 200 mm), and the side edge of the second distribution plate 20 on the opening 3 side is opened 175 mm from the opening 3 (afterward). The side edge on the wall 8 side is arranged 58 mm from the rear wall 8).

The third distribution plate 21 is provided between the air inlets 5 to 40
0 mm position (the distance from the second distribution plate 20 is 200 m
m), and the side edge on the opening 3 side of the third distribution plate 21 is opened by 58 mm from the opening 3 (the side edge on the rear wall 8 side is 175 mm from the rear wall 8).
mm open). The fourth distribution plate 22 is positioned 200 mm from the air inlet 5 (the distance from the third distribution plate 21 is 200 mm), and the side edge on the opening 3 side is aligned with the opening 3 (the side edge on the rear wall 8 side is rearward). 233 mm from the wall 8).

In the uniform flow blowing device of the fourteenth embodiment shown in FIG. 75, air is sent by an air supply fan connected to the air inlet 5, and the same method as that of the first embodiment is used at a position 100 mm away from the air outlet 13. The wind speed was measured.

FIG. 76 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of Embodiment 14. FIG.
7 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 14.

As shown in FIGS. 76 to 77, X = 0.
4, a maximum wind speed of 1.23 m / s was measured at the measurement point of Z = 0, and the measurement point of X = −0.4, Z = 0 and X = −0.4,
A minimum wind speed of 0.86 m / s was measured at a measurement point of Z = -0.1. The average wind speed at 45 measurement points is 1.03
m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence rate) was + 19.4%, and the ratio of the minimum wind speed to the average wind speed (turbulence ratio) was -16.5%. The wind speed was within ± 20% of the average wind speed, and a uniform flow was formed.

FIG. 78 shows Example 1 of the third embodiment.
It is a top view which shows the 5 uniform flow blowing apparatus. The shape and dimensions of the box 2 are all the same as those of the first embodiment.

As shown in FIG. 78, in the fifteenth embodiment, the first distribution plate 19 has a width of 117 mm, which is の of the width (350 mm) of the box 2, and the second distribution plate 20 has a width of 117 mm. The third distribution plate 21 has a width 117 mm, which is ３ of the width of the box 2 (350 mm).
m) and the width is 175 mm,
2 is a quarter of the width of the box 2 (350 mm).
It is 5 mm.

The first distribution plate 19 is provided between the air inlets 5 and 80.
It is arranged at a position of 0 mm (the distance from the left side wall 4 is 200 mm), and the side edge on the rear wall 8 side is in contact with the rear wall 8. The second distribution plate 20 is located at a position 600 mm from the air inlet 5 (the distance from the first distribution plate 19 is 200 mm), and the side edge of the second distribution plate 20 on the opening 3 side is opened 175 mm from the opening 3 (afterward). The side edge on the wall 8 side is arranged 58 mm from the rear wall 8).

The third distribution plate 21 is provided between the air inlets 5 and 40.
0 mm position (the distance from the second distribution plate 20 is 200 m
m), and the side edge of the third distribution plate 21 on the opening 3 side is opened by 58 mm from the opening 3 (the side edge on the rear wall 8 side is 117 mm from the rear wall 8).
mm open). The fourth distribution plate 22 is positioned 200 mm from the air inlet 5 (the distance from the third distribution plate 21 is 200 mm), and the side edge on the opening 3 side is aligned with the opening 3 (the side edge on the rear wall 8 side is 262.5 mm from the rear wall 8).

In the uniform flow blowing device of the fifteenth embodiment shown in FIG. 78, air is sent by an air supply fan connected to the air inlet 5, and the same method as in the first embodiment is carried out at a position 100 mm away from the air outlet 13. The wind speed was measured.

FIG. 79 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of Example 15;
0 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 15.

As shown in FIGS. 79 to 80, X = 0.
The maximum wind speed of 1.16 m / s was measured at the measurement points of 4, Z = 0, and the minimum wind speed of 0.90 m / s was measured at the measurement points of X = -0.2, Z = -0.2. The average wind speed at 45 measurement points was 1.02 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence rate) is + 13.7%, and the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -11.8%. The wind speed was within ± 20% of the average wind speed, and a good uniform flow was formed.

For comparison, with respect to an air blowing apparatus having four distribution plates, the wind speed was measured in the same manner as in Example 1 while changing the width of the distribution plates. FIG. 81 is a plan view of the air blowing device of Comparative Example 11.

In the air blowing device of Comparative Example 11 shown in FIG. 81, the shape and dimensions of the box 2 are the same as those of Example 1 shown in FIG. The air inlet 5 of the box 2 is the same as that of the first embodiment.

In Comparative Example 11, the first distribution plate 19 is 87.5 m wide, which is １ ／ of the width of the box 2 (350 mm).
m, and the second distribution plate 20 has a width dimension (350 m
m), and the third distribution plate 21 has a width 11 which is also も of the width dimension (350 mm) of the box body 2.
7 mm, and the fourth distribution plate 22 has a width dimension (35
0 mm) and the width is 87.5 mm.

The first distribution plate 19 is provided between the air inlets 5 and 80.
It is arranged at a position of 0 mm (the distance from the left side wall 4 is 200 mm), and the side edge on the rear wall 8 side is in contact with the rear wall 8. The second distribution plate 20 is located at a position 600 mm from the air inlet 5 (the distance from the first distribution plate 19 is 200 mm), and the side edge of the second distribution plate 20 on the opening 3 side is opened 175 mm from the opening 3 (afterward). The side edge on the wall 8 side is arranged 58 mm from the rear wall 8).

The third distribution plate 21 is provided between the air inlets 5 and 40.
0 mm position (the distance from the second distribution plate 20 is 200 m
m), and the side edge on the opening 3 side of the third distribution plate 21 is opened by 58 mm from the opening 3 (the side edge on the rear wall 8 side is 175 mm from the rear wall 8).
mm open). The fourth distribution plate 22 is positioned 200 mm from the air inlet 5 (the distance from the third distribution plate 21 is 200 mm), and the side edge on the opening 3 side is 3 to 3 mm from the opening 3.
0 mm apart (the side edge on the rear wall 8 side is
32.5 mm apart).

In the uniform flow blowing device of Comparative Example 11 shown in FIG. 81, air is sent by an air supply fan connected to the air inlet 5 and the same method as in Example 1 is performed at a position 100 mm away from the air outlet 13. The wind speed was measured.

FIG. 82 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of Comparative Example 11, and FIG.
3 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Comparative Example 11.

As shown in FIGS. 82 to 83, X = 0.
4, the maximum wind speed 1.27 m / s was measured at the measurement point of Z = 0, and the minimum wind speed was 0.84 at the measurement point of X = −0.2, Z = 0.
m / s was measured. The average wind speed at 45 measurement points was 1.02 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence ratio) is + 24.5%, the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -17.6%, and ± 20% of the average wind speed. That's it. The reason for this is that the width of the first distribution plate 19 which is closest to the left side wall 4 and is in contact with the rear wall 8 is too small with respect to the width, and the air sent out from the air inlet 5 becomes It is considered that the air is not guided too much toward the opening 3 by the one distribution plate 19 and is biased in the air sending direction (air inflow direction).

FIG. 84 is a plan view of the air blowing device of Comparative Example 12. In the air blowing device of Comparative Example 12 shown in FIG. 84, the shape and dimensions of the box 2 are the same as those of Example 1 shown in FIG.
Is the same as Further, the air inlet 5 of the box 2 is also the same as that of the first embodiment.
Is the same as

In Comparative Example 12, the second distribution plate 20,
The shape and size and the arrangement position of the third distribution plate 21 and the fourth distribution plate 22 are the same as those of the twelfth embodiment shown in FIG. 69, the width of the first distribution plate 19 is reduced, and the width of the box 2 ( 350m
m) with a width of． of 87.5 mm.

In the uniform flow blowing device of Comparative Example 11 shown in FIG. 84, air is sent by an air supply fan connected to the air inlet 5, and the same method as that of Example 1 is used at a position 100 mm away from the air outlet 13. The wind speed was measured.

FIG. 85 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of Comparative Example 12, and FIG.
6 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Comparative Example 12.

As shown in FIGS. 85 to 86, X = 0.
4, a maximum wind speed of 1.22 m / s was measured at a measurement point of Z = 0, and a minimum wind speed of 0.85 m / s was measured at a measurement point of X = -0.2 and Z = -0.2. The average wind speed at 45 measurement points was 1.01 m / s.

The ratio of the maximum wind speed to the average wind speed (turbulence ratio) is + 20.8%, the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -15.8%, and ± 20% of the average wind speed. That's it.

In comparison with the measurement result of the twelfth embodiment in FIG. 69, the width of the fourth distribution plate 22 which is also closest to the left side wall 4 and is in contact with the rear wall 8 is the width of the box 2. It is considered that the air supplied from the air inlet 5 is too small to be guided toward the opening 3 by the first distribution plate 19 and is biased in the air supply direction (air inflow direction).

FIG. 87 is a perspective view showing a uniform flow blowing device according to a fourth embodiment of the present invention according to claim 4, and FIG. 88 is a perspective view showing the uniform flow blowing device of FIG. It is a top view of a flow blowing device. FIG. 89 is a plan view of the uniform flow blowing device of Example 16 specifically showing the uniform flow blowing device of the fourth embodiment.

In the uniform flow blowing device 1 'of the fourth embodiment, the box 2, the air inlet 5, the first perforated plate 10, the second
The structures and dimensions of the perforated plate 11 and the rectifying grid 12 are exactly the same as those of Example 9 in FIG. 48 in the second embodiment. In addition, three distribution plates each having a rectangular shape, ie, a first distribution plate 16 and a second distribution plate 1, disposed inside the box 2.
7 and the third distribution plate 18, the first distribution plate 16 has a width of 117 mm, which is ３ of the width (350 mm) of the box 2, and a position 700 mm from the air inlet 5 (the distance from the left side wall 4). 300 mm apart) and the rear wall 8 of the first distribution plate 16
The side edge is arranged so as to contact the rear wall 8.

The second distribution plate 17 has a width dimension (35
0 mm) and the width of the air inlet 5 is 175 mm.
(The middle between the left side wall 4 and the air inlet 5 and the distance between the first distribution plate 16 is 300 mm), and the side edge on the opening 3 side is opened by 87.5 mm from the opening 3 (the rear wall 8). Side edge 87.5 mm from the rear wall 8).

The third distribution plate 18 has a width dimension (b =
350 mm), the width is 87.5 mm, the position is 200 mm from the air inlet 5 (the distance from the second distribution plate 17 is 300 mm), and the side edge on the opening side is 3 to 3 from the opening.
It is arranged 0 mm apart.

The uniform flow blowing device 1 'of the fourth embodiment is different from the first distribution plate 16, the second distribution plate 17 and the third distribution plate 18 of the first embodiment in that the guide plates 23, 2
4 and 25 are different from each other.

As shown in FIGS. 88 and 89, a guide plate 23 intersecting at an angle of 40 degrees with the air inlet 5 at the side of the opening 3 side of the first distribution plate 16 is provided in series. I have. A guide plate 24 intersecting with the air inlet 5 at an angle of 90 degrees is provided in series with the side edge of the second distribution plate 17 on the side of the opening 3. A guide plate 25 intersecting at an angle of 45 degrees is provided on the side of the air inlet 5 along the side edge of the third distribution plate 18 on the opening 3 side. Guide plates 23 to 25
Have the same dimensions and a width of 87.5 mm. Each guide plate 23 to 25 distributes a fast air flow along the first distribution plate 16 to the third distribution plate 18, respectively.
Ribbon.

FIG. 90 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device according to the sixteenth embodiment.
1 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 16.

The method of measuring the wind speed is the same as in the first embodiment. As shown in FIGS. 90 to 91, X = −0.2, Z
= 0, a maximum wind speed of 1.08 m / s is measured, and X
= 0.1, Z = -0.1 and X = 0.1, Z =
At a measurement point of -0.2, a minimum wind speed of 0.91 m / s was measured. The average wind speed at 45 measurement points is 1.00 m /
s.

The ratio of the maximum wind speed to the average wind speed (turbulence rate) was + 8%, the ratio of the minimum wind speed to the average wind speed (turbulence rate) was -8%, and the wind speed at each of the 45 measurement points was an average. It was within ± 10% of the wind speed, and a good uniform flow was formed.

[0191]

According to the uniform flow blowing device of the first aspect, the uniformity of the velocity distribution can be suppressed to within ± 20%, and only two or more distribution plates are provided inside the box. With this simple structure, a uniform flow can be produced.

According to the structure of the second aspect, the first aspect
As compared with the uniform flow blowing device described in the above, a simple structure in which only one additional distribution plate is provided inside the box body can provide a uniform flow, and sending out air from the air inlet. In the direction, it is possible to suppress the tendency that the wind speed near the air inlet of the opening is low and the wind speed near the air inlet of the opening is high.

According to the structure of the third aspect, the first aspect
As compared with the uniform flow blowing device described in (1), a uniform flow is generated in which the difference between the wind speed of the portion closer to the air inlet of the opening and the wind speed of the portion farther from the air inlet of the opening is smaller. be able to.

According to the structure of the fourth aspect, since each guide plate distributes and swiftly flows the fast air flow along each distribution plate, the accuracy of the uniformity of the velocity distribution can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a uniform flow blowing device according to claim 1 according to a first embodiment of the present invention.

FIG. 2 is a plan view of the uniform flow blowing device of FIG.

FIG. 3 is a right side view of the uniform flow blowing device of FIG.

FIG. 4 is a plan view of a uniform flow blowing device of Example 1 according to the first embodiment of the present invention.

FIG. 5 is a plan view showing the flow of air in the uniform flow blowing device of the first embodiment.

FIG. 6 is a diagram showing measurement points of wind speed at an air outlet.

FIG. 7 is a graph showing a wind speed distribution at each measurement point of the uniform flow blowing device of Example 1.

FIG. 8 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 1.

FIG. 9 is a plan view of the uniform flow blowing device of Example 2 according to the first embodiment of the present invention.

FIG. 10 is a graph showing a wind speed distribution at each measurement point of the uniform flow blowing device according to the second embodiment.

FIG. 11 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 2.

FIG. 12 is a plan view of a uniform flow blowing device of Example 3 according to the first embodiment of the present invention.

FIG. 13 is a graph showing a wind speed distribution at each measurement point of the uniform flow blowing device according to the third embodiment.

FIG. 14 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of the third embodiment.

FIG. 15 is a plan view of the air flow blowing device of Comparative Example 1.

FIG. 16 is a graph showing a wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 1.

FIG. 17 is a table showing wind speed measurement results at each measurement point of the air flow blowing device of Comparative Example 1.

FIG. 18 is a plan view of a uniform flow blowing device of Example 4 according to the first embodiment of the present invention.

FIG. 19 is a graph showing a wind speed distribution at each measurement point of the uniform flow blowing device according to the fourth embodiment.

FIG. 20 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 4.

FIG. 21 is a plan view of a uniform flow blowing device of Example 5 according to the first embodiment of the present invention.

FIG. 22 is a graph showing a wind speed distribution at each measurement point of the uniform flow blowing device of the fifth embodiment.

FIG. 23 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of the fifth embodiment.

FIG. 24 is a plan view of a uniform flow blowing device of Example 6 according to the first embodiment of the present invention.

FIG. 25 is a graph showing a wind speed distribution at each measurement point of the uniform flow blowing device of the sixth embodiment.

FIG. 26 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 6.

FIG. 27 is a plan view of a uniform flow blowing device of Example 7 according to the first embodiment of the present invention.

FIG. 28 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of the seventh embodiment.

FIG. 29 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 7;

FIG. 30 is a plan view of the uniform flow blowing device of Example 8 according to the first embodiment of the present invention.

FIG. 31 is a graph showing a wind speed distribution at each measurement point of the uniform flow blowing device of the eighth embodiment.

FIG. 32 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device according to the eighth embodiment.

FIG. 33 is a plan view of the air flow blowing device of Comparative Example 2.

FIG. 34 is a graph showing the wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 2.

FIG. 35 is a table showing wind speed measurement results at each measurement point of the air flow blowing device of Comparative Example 2.

FIG. 36 is a plan view of an air flow blowing device of Comparative Example 3.

FIG. 37 is a graph showing a wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 3.

FIG. 38 is a table showing wind speed measurement results at each measurement point of the air flow blowing device of Comparative Example 3.

FIG. 39 is a plan view of an air flow blowing device of Comparative Example 4.

FIG. 40 is a graph showing a wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 4.

FIG. 41 is a table showing wind speed measurement results at each measurement point of the air flow blowing device of Comparative Example 4.

FIG. 42 is a plan view of the uniform flow blowing device of Example 9 according to the second embodiment of the present invention.

FIG. 43 is a graph showing a wind speed distribution at each measurement point of the uniform flow blowing device of the ninth embodiment.

FIG. 44 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of the ninth embodiment.

FIG. 45 is a plan view of a uniform flow blowing device of Example 10 according to a second embodiment of the present invention.

FIG. 46 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of Example 10.

FIG. 47 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 10.

FIG. 48 is a plan view of a uniform flow blowing device of Example 11 according to a second embodiment of the present invention.

FIG. 49 is a graph showing a wind speed distribution at each measurement point of the uniform flow blowing device of Example 11;

FIG. 50 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 11;

FIG. 51 is a plan view of an air flow blowing device of Comparative Example 5.

FIG. 52 is a graph showing a wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 5.

FIG. 53 is a table showing wind speed measurement results at each measurement point of the air flow blowing device of Comparative Example 5;

FIG. 54 is a plan view of an air flow blowing device of Comparative Example 6.

FIG. 55 is a graph showing the wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 6.

FIG. 56 is a table showing wind speed measurement results at each measurement point of the air flow blowing device of Comparative Example 6.

FIG. 57 is a plan view of an air flow blowing device of Comparative Example 7.

FIG. 58 is a graph showing a wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 7.

FIG. 59 is a table showing wind speed measurement results at each measurement point of the air flow blowing device of Comparative Example 7.

FIG. 60 is a plan view of an air flow blowing device of Comparative Example 8.

FIG. 61 is a graph showing the wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 8.

FIG. 62 is a table showing wind speed measurement results at each measurement point of the air flow blowing device of Comparative Example 8.

FIG. 63 is a plan view of an air flow blowing device of Comparative Example 9;

FIG. 64 is a graph showing the wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 9;

FIG. 65 is a table showing wind speed measurement results at each measurement point of the air flow blowing device of Comparative Example 9;

FIG. 66 is a plan view of an air flow blowing device of Comparative Example 10.

FIG. 67 is a graph showing a wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 10.

FIG. 68 is a table showing wind speed measurement results at each measurement point of the air flow blowing device of Comparative Example 10.

FIG. 69 is a plan view of a uniform flow blowing device of Example 12 according to a third embodiment of the present invention.

FIG. 70 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of Example 12.

FIG. 71 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 12.

FIG. 72 is a plan view of a uniform flow blowing device of Example 13 according to a third embodiment of the present invention.

FIG. 73 is a graph showing the wind speed distribution at each measurement point of the uniform flow blowing device of Example 13.

FIG. 74 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 13;

FIG. 75 is a plan view of a uniform flow blowing device of Example 14 according to a third embodiment of the present invention.

FIG. 76 is a graph showing a wind speed distribution at each measurement point of the uniform flow blowing device of Example 14.

FIG. 77 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 14.

FIG. 78 is a plan view of a uniform flow blowing device of Example 15 according to the third embodiment of the present invention.

FIG. 79 is a graph showing a wind speed distribution at each measurement point of the uniform flow blowing device of Example 15;

FIG. 80 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 15;

FIG. 81 is a plan view of an air flow blowing device of Comparative Example 11;

FIG. 82 is a graph showing the wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 11;

FIG. 83 is a table showing wind speed measurement results at each measurement point of the air flow blowing device of Comparative Example 11;

84 is a plan view of an air flow blowing device of Comparative Example 12. FIG.

FIG. 85 is a graph showing a wind speed distribution at each measurement point of the air flow blowing device of Comparative Example 12.

FIG. 86 is a table showing wind speed measurement results at each measurement point of the air flow blowing device of Comparative Example 12.

FIG. 87 is a perspective view of the uniform flow blowing device according to claim 4 according to a fourth embodiment of the present invention.

FIG. 88 is a plan view of the uniform flow blowing device of FIG. 87.

FIG. 89 is a plan view of a uniform flow blowing device of Example 16 according to the fourth embodiment of the present invention.

FIG. 90 is a graph showing a wind speed distribution at each measurement point of the uniform flow blowing device of Example 16;

FIG. 91 is a table showing wind speed measurement results at each measurement point of the uniform flow blowing device of Example 16;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Uniform flow blowing device (1st Embodiment) 1 'Uniform flow blowing device (4th Embodiment) 2 Box 3 Opening 4 Left side wall 5 Air inlet 6 Top wall 7 Bottom wall 8 Rear wall 9 Duct 10 First Reference Signs List 1 perforated plate 11 second perforated plate 12 straightening grid 13 air outlet 14 first distribution plate (first embodiment) 15 second distribution plate (first embodiment) 16 first distribution plate (second embodiment) 17th 2 distribution plate (2nd embodiment) 18 3rd distribution plate (2nd embodiment) 19 1st distribution plate (3rd embodiment) 20 2nd distribution plate (3rd embodiment) 21 3rd distribution plate (3rd embodiment) Embodiment) 22 Fourth distribution plate (Third embodiment) 23 Guide plate 24 Guide plate 25 Guide plate

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[Procedure amendment]

[Submission date] May 12, 1999 (1999.5.1
2)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0044

[Correction method] Change

[Correction contents]

The ratio of the maximum wind speed to the average wind speed (turbulence rate) is + 20.6%, and X = −0.2, Z = −0.
The tendency that the turbulence rate slightly exceeds 20% at one of the two measurement points is the same as in the second embodiment. The ratio of the minimum wind speed to the average wind speed (turbulence rate) is -17.6 %, and the wind speed at each of the 45 measurement points is within ± 20% of the average wind speed. Was formed.
However, there is no change in the tendency that the speed difference between the measurement point at X = −0.1 m and the measurement point at X = −0.2 m is larger than the difference between the measurement points at other adjacent measurement points.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0064

[Correction method] Change

[Correction contents]

The ratio of the maximum wind speed to the average wind speed (turbulence ratio) is + 16.0 %, and the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -18.0%. Was within ± 20% of the average wind speed, and a good uniform flow was formed. However, the speed difference between the measurement point at X = −0.1 m and the measurement point at X = −0.2 m is slightly smaller than that in the fifth embodiment.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name]

[Correction method] Change

[Correction contents]

The ratio of the maximum wind speed to the average wind speed (turbulence ratio) is + 17.0 %, and the ratio of the minimum wind speed to the average wind speed (turbulence ratio) is -17.0%. Was within ± 20% of the average wind speed, and a good uniform flow was formed. However, the speed difference between the measurement point at X = −0.1 m and the measurement point at X = −0.2 m is slightly smaller than that in the sixth embodiment.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0129

[Correction method] Change

[Correction contents]

In the air blowing device of Comparative Example 10 shown in FIG. 66, all the three distribution plates of the first distribution plate 16 to the third distribution plate 18 have the same shape and size, that is, the width of the three distribution plates. Is 8 times 1/4 of the width b (= 350 mm) of the box.
7.5 mm, and the arrangement positions of the first to third three distribution plates
The position is the same as that of the ninth embodiment , and the first distribution plate 16 is
The side edge of the rear wall 8 side of the distribution plate 18 is arranged in contact with the rear wall 8, and the second distribution plate 17 is arranged so that the center of the width thereof is aligned with the center line connecting the center of the box body 2 in the width direction. And the third distribution plate 1
Reference numeral 8 denotes an arrangement in which the side edge on the opening 3 side is aligned with the opening 3.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name]

[Correction method] Change

[Correction contents]

The ratio of the maximum wind speed to the average wind speed (turbulence ratio) was + 8%, the ratio of the minimum wind speed to the average wind speed (turbulence ratio) was -9 %, and the wind speed at each of the 45 measurement points was an average. It was within ± 10% of the wind speed, and a good uniform flow was formed. ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] April 28, 2000 (200.4.2
8)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

[0013]

According to a first aspect of the present invention, there is provided a uniform flow blowing device having an opening on the entire front surface of a hollow box having a rectangular parallelepiped shape, and a rear wall opposed to the opening; An air inlet is provided on one side of the box orthogonal to the opening, while another side is provided on the other side of the box facing the air inlet, and the outside of the opening serves as an air outlet. Therefore, in order to solve the above-mentioned problem, a plurality of distribution plates made of only flat plates each having a rectangular shape are formed on the inside of the box along the other side wall facing the air inflow port. A first distribution plate provided over a wall and a lower wall, among the distribution plates, a first distribution plate located on a most downstream side in an inflow direction of air supplied from the air inlet, is spaced from the other side wall, and When one side edge abuts on the rear wall of the box, The other side edge is arranged at an interval with respect to the opening, and the second distribution plate faces the space between the other side edge of the first distribution plate and the opening, and the second distribution plate is arranged in the air inflow direction. Along with being arranged on the upstream side of the first distribution plate, the side edge on the opening side is arranged at a distance from the opening,
And the back wall side edge is spaced from the back wall
When disposed and seen through the air inlet, at least a side edge on the rear wall side of the second distribution plate and a side edge on an opening side of the first distribution plate are not separated.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0023

[Correction method] Change

[Correction contents]

As shown in FIG. 1 to FIG. 3, inside the box 2, each has a rectangular shape along the left side wall 4 of the box 2.
A plurality of distribution plates 14 and 15 consisting only of flat plates are provided over the upper wall 6 and the lower wall 5 of the box 2. The first
The embodiment is an embodiment in which the number of distribution plates is two.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction contents]

The second distribution plate 15 faces the space between the other side edge of the first distribution plate 14 and the opening 3 and is disposed upstream of the first distribution plate 14 in the air inflow direction. The side edge of the opening 3 is spaced from the opening 3 and then
When the side edge on the wall 8 side is arranged at a distance from the rear wall 8 and is seen through from the air inlet 5, at least the side edge on the rear wall 8 side of the second distribution plate 15 and the first distribution plate 14 are arranged so as not to be separated from the side edge on the opening side (see FIG. 2).

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0129

[Correction method] Change

[Correction contents]

In the air blowing device of Comparative Example 10 shown in FIG. 66, all the three distribution plates of the first distribution plate 16 to the third distribution plate 18 have the same shape and size, that is, the width of the three distribution plates. Is 8 times 1/4 of the width b (= 350 mm) of the box.
The first distribution plate 16 is disposed such that the side edge of the third distribution plate 18 on the rear wall 8 side is in contact with the rear wall 8, and the second distribution plate 17 has a box width centered at the center thereof. The third distribution plate 18 is arranged so that the side edge on the side of the opening 3 is aligned with the opening 3.

Claims (4)

[Claims] 1. A hollow box having a rectangular parallelepiped shape having an opening on the entire front surface, a rear wall facing the opening, and an air inlet on one side surface of the box orthogonal to the opening. A uniform flow blowing device provided with another side wall on the other side surface of the box body facing the air inlet, and having an outside of the opening serving as an air outlet, wherein the inside of the box is connected to the air inlet. A plurality of distribution plates each having a rectangular shape are provided along the opposing other side wall over the upper wall and the lower wall of the box, and among the distribution plates, in the inflow direction of the air supplied from the air inlet. The first distribution plate located at the most downstream side is spaced apart from the other side wall, and one side edge thereof is in contact with the rear wall of the box, and the other side edge is spaced apart from the opening. And the second distribution plate is located on the other side edge of the first distribution plate. Facing the distance between the and the opening,
When arranged on the upstream side of the first distribution plate in the direction of inflow of the air, the side edge on the opening side is arranged at a distance from the opening, and when viewed through the air inlet, at least the A uniform flow blowing device, wherein a side edge on a rear wall side of the second distribution plate and a side edge on an opening side of the first distribution plate are not separated. 2. A third distribution plate is further provided on the upstream side of the second distribution plate in the air inflow direction, facing a space between a side edge of the second distribution plate on the opening side and the opening. At least, when viewed from the air inlet, the side edge on the rear wall side of the third distribution plate and the side edge on the opening side of the second distribution plate are not separated from each other. Item 1
3. The uniform flow blowing device according to 1. 3. The third distribution plate is disposed with its side edge on the opening side spaced apart from the opening, and the distance between the side edge on the opening side of the third distribution plate and the opening. In the upstream direction of the third distribution plate in the inflow direction of the air,
In addition, when a fourth distribution plate is arranged and viewed through the air inlet, at least a side edge on the rear wall side of the fourth distribution plate and a side edge on the opening side of the third distribution plate are not separated. The uniform flow blowing device according to claim 2, characterized in that: 4. A plurality of guide plates intersecting with the air inlet side in alignment with the side edges on the opening side of the plurality of distribution plates, respectively, and an intersection angle between each of the distribution plates and the guide plate. The uniform flow blowing device according to claim 1, wherein the angle is set to 90 degrees or less.