JP2012037131A - Flow rate control mechanism of multi-branch chamber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow an air volume and a flow rate to be uniformized by arranging a control wall having an opening between a first discharge hole and a second discharge hole, though usually a large amount is discharged from a supply hole to a first discharge hole at a position facing a supply hole, gas having passed through the opening is discharged from the first discharge hole, and gas blocked with the control wall is not discharged from the first discharge hole but discharged from the other second discharge hole, and further by arranging a second control wall having an open portion between the second discharge hold and a third discharge hole.SOLUTION: An air volume control mechanism of a multi-branch chamber, which has the supply hole and discharge holes, and which is formed with a hollow box body, has the first discharge hole at the position facing the supply face, the second discharge hole at the side of the supply hole of the first discharge hole, and the third discharge hole, has the first control wall which is provided between the first discharge hole and the second discharge hole and which has an opening portion, and the second control wall which is provided between the second discharge hole and the third discharge hole and which has an opening portion in the periphery.

Description

  The present invention relates to a multi-branch chamber that is used for air-conditioning equipment or the like and used for branching a duct when a gas such as cold air or warm air sent from a blower or the like through a duct is sent in multiple directions.

Patent Document 1 exists as a prior document of the present invention.
In this prior art, as shown in FIG. 7, the chamber body 101 is provided with an introduction port 102 and a plurality of discharge ports 103 radially toward the outside of the chamber body 101. A plurality of columnar rectifying members 104 are provided inside the chamber body 101. This is because the gas supplied from the inlet 102 is discharged from the plurality of outlets 103, but the amount of gas discharged is averaged by the rectifying member 104 inside the chamber body 101.
Further, Patent Document 1 exists as a prior document of the present invention.
The present invention is a chamber for branching into a plurality of ducts, and is provided with an air volume adjusting body that is erected in the vertical direction in the chamber and disposed at a front position of the opening on the inlet side. Has one or more openings.

JP 2003-74958 A JP 2000-130830 A

Although the prior art shown in FIG. 7 can equalize the flow rate, there is a problem that the discharged pressure is lowered. This is because the gas collides with the rectifying member and a turbulent flow is generated in the chamber, and the discharge pressure becomes smaller than the normal discharge.
The invention described in Patent Document 1 disperses the gas flowing in by the guide vanes even though there is an opening. The distribution of the gas by the guide vanes depends on the position and angle of the vanes. When the second and third discharge holes are provided, it is difficult to make the discharge amount uniform.

  Therefore, the multi-branch chamber flow adjustment mechanism of the present invention has a hollow box, a supply surface for opening the box, a gas supply hole for supplying gas into the box, and a surface other than the supply surface. In the multi-branch chamber having a plurality of discharge holes for discharging the gas inside the box, the discharge holes are at least a first discharge hole on the first discharge surface facing the supply surface, and other than the first discharge surface There is a second discharge hole on the second discharge surface, and a first adjustment wall provided with an opening is disposed between the first discharge hole and the second discharge hole.

  The second adjustment has a second discharge hole and a third discharge hole located closer to the supply hole than the second discharge hole, and an opening is provided between the second discharge hole and the third discharge hole. It is preferable to arrange a wall and to have an opening around the second adjustment wall.

  Moreover, it is preferable that a 2nd adjustment wall has an opening part whose opening rate is lower than the opening part of a 1st adjustment wall.

  Moreover, it is preferable that the 2nd discharge hole and the 3rd discharge hole are arrange | positioned at the upper and lower two steps | paragraphs on the both sides | surfaces orthogonal to the discharge direction of a supply hole and a 1st discharge hole.

  In addition, the discharge holes are sequentially opened from the third discharge hole to the supply hole side, and open to the periphery between the sequentially opened discharge hole and the discharge hole on the first discharge hole side of the discharge hole. It is preferable that the opening area of the opening portion is successively reduced between the one adjusting wall and the adjusting wall on the supply hole side of the one adjusting wall.

According to the first aspect of the present invention, a large amount of gas is normally discharged from the supply hole to the first discharge hole located at the opposite position. For this reason, a gas smaller than the amount of air discharged to the first discharge hole is discharged to the second discharge hole and the like disposed on a surface other than the first discharge surface having the first discharge hole.
Therefore, by arranging the adjustment wall with the opening at a position between the first discharge hole and the second discharge hole, the gas that has passed through the opening is discharged from the first discharge hole, and the passage is blocked by the adjustment wall. The discharged gas is discharged from another second discharge hole that is not the first discharge hole.
Thereby, air volume can be adjusted and it can contribute to equalization of discharge amount.
In addition, if an adjustment wall without an opening is used, turbulent flow may occur in the chamber and the discharge pressure may decrease.However, if the adjustment wall has an opening, gas passes through the opening. Turbulence is less likely to occur, and discharge with less pressure loss is possible.

  According to the second aspect of the present invention, since the third discharge hole is provided on the supply hole side from the second discharge hole and the second discharge hole, the gas is sent to the second discharge hole and the first discharge hole while the third discharge hole. Where the gas needs to be discharged to the discharge hole, the opening and the open part can ensure the passage of the gas to the second discharge hole and the first discharge hole, and the third discharge is blocked by the second adjustment wall. The amount of air discharged to the hole and the amount of discharge can be adjusted.

  According to the invention described in claim 3, by making the opening ratio of the opening of the second adjustment wall lower than the opening of the first adjustment wall, the second adjustment wall can be easily blocked, and from the third discharge hole. It can be easily discharged.

According to the invention described in claim 4, it is possible to omit the length in the horizontal direction because the second discharge hole and the third discharge hole are arranged in the upper and lower two stages rather than arranging the second discharge hole and the third discharge hole side by side in the horizontal direction. It can be installed in a space.
Further, since the discharge holes are arranged in two upper and lower stages, the gas supplied from the supply holes is discharged in a clearly divided manner, the upper discharge hole and the lower discharge hole. Compared to the case where there is no stage, it is possible to distribute a constant flow rate without an adjustment wall.
In addition, the adjustment wall on the first discharge hole side of the lower discharge hole can have a space with the upper position as an open portion, and gas can be passed smoothly.

According to the fifth aspect of the present invention, it is possible to sequentially provide the discharge holes such as the fourth discharge holes on the supply hole side from the third discharge holes, and it is possible to provide a multi-branch chamber capable of many branches. .
Further, by lowering the aperture ratio as it becomes the adjustment wall on the supply hole side, gas is discharged also from the discharge hole considered to have the least discharge, and the air volume can be adjusted.

It is a perspective view which shows the whole multi-branch chamber concerning the 1st Example of this invention, Comprising: The state which attached the duct only to one of the 3rd discharge holes is shown. The adjustment wall is shown with a broken line about the multi-branch chamber concerning the 1st Example of this invention, (a) is a top view and shows the passage direction of gas, (b) is a side view. It is the multi-branch chamber which shows the 2nd Example of this invention, Comprising: (a) is the perspective view, (b) is a side view. It is a perspective view which shows an example of the 1st adjustment wall of this invention. FIG. 3 is a perspective view showing the inside of the first embodiment of the present invention, with the top surface of the box body removed. It is a multi-branch chamber which shows the 3rd Example of this invention, Comprising: (a) is a top view, (b) is a side view. It is a perspective view which shows the conventional multi-branch chamber, Comprising: The upper surface and short rod of a box are removed, and the state which notched part is shown.

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an overall perspective view of the multi-branch chamber 1. The multi-branch chamber 1 is mainly used for air conditioning equipment. This is used to branch the duct in multiple directions when a gas such as cold air or warm air from an air conditioner is sent in each direction through the duct 3.

  As shown in FIG. 1, the multi-branch chamber 1 has a shape like a box 2 and its inside is hollow. The gas sent from the supply hole 11 to the inside of the box body 2 is discharged from each discharge hole. The supply hole 11 and the discharge hole communicate with the inside and outside of the box 2, and supply and discharge gas into the multi-branch chamber 1 through the duct 3. Although FIG. 1 etc. are circular holes, it is not necessarily restricted to this.

One surface of the box 2 (the left back surface in FIG. 1) serves as a supply surface 21, and the supply hole 11 is opened in the supply surface 21.
On the other hand, the surface on the opposite side of the supply surface 21 (the surface on the right front side in FIG. 1) is the first discharge surfaces 22a and 22b. First discharge holes 12a and 12b are opened in the first discharge surfaces 22a and 22b. The first discharge surfaces 22a and 22b are mountain-shaped with the center protruding, and are composed of two inclined surfaces. Two first discharge holes 12a and 12b are formed on the inclined surfaces of the two first discharge surfaces 22a and 22b.

Two surfaces (surface on the left front side and surface on the right rear side in FIG. 1) perpendicular to the discharge direction from the supply surface 21 to the first discharge surfaces 22a and 22b (direction A in FIG. 2A) are the second. It becomes the discharge surfaces 23a and 23b.
Second discharge holes 13a and 13b and third discharge holes 14a and 14b are opened in the second discharge surfaces 23a and 23b. The second discharge holes 13a and 13b are disposed closer to the first discharge holes 12a and 12b than the third discharge holes 14a and 14b.
The first discharge holes 12a and 12b and the second discharge holes 13a and 13b are disposed on the upper side in the vertical direction of the box body 2 of the second discharge surfaces 23a and 23b, and the third discharge holes 14a and 14b are formed on the box body 2. It is arranged on the lower side in the vertical direction.

Here, in this embodiment, as shown in FIG. 1, the second discharge holes 13 a and 13 b and the third discharge holes 14 a and 14 b are arranged on both side surfaces of the box body 2. 24 and the bottom surface 25.
Further, the first discharge holes 12 a and 12 b, the second discharge holes 13 a and 13 b, and the third discharge holes 14 a and 14 b have a smaller opening area than the supply hole 11. This is because a large amount of gas is supplied from the supply hole 11, so that the opening area of the supply hole 11 is increased. However, the supply hole 11 is not necessarily limited to this and may have the same diameter.

Moreover, the position of each discharge hole is not limited only to the case shown in FIG.
As shown in FIG. 3 (a), the first discharge hole 12 may be located in the central portion in the vertical direction of the box 2, and although not shown, the second discharge holes 13a, 13b and the third discharge holes 14a, 14b may be arranged in the horizontal direction of the second discharge surfaces 22a and 22b of the box 2.
Further, as in the second embodiment shown in FIGS. 3A and 3B, fourth discharge holes 15a and 15b may be further formed on the supply hole 11 side of the third discharge holes 14a and 14b. Good. Further, the supply holes may be further sequentially opened on the supply hole 11 side of the fourth discharge holes 15a and 15b.

As shown in FIG. 1, in the multi-branch chamber 1 according to the first embodiment, the second discharge holes 13a and 13b and the third discharge holes 14a and 14b are also formed on the second discharge surface, as with the first discharge holes 12a and 12b. Two holes are opened on both side surfaces of the box 2 to be 23a and 23b.
This is because the discharge holes at positions closest to the supply hole 11 from the first discharge holes 12a and 12b located farthest from the supply hole 11 as second discharge holes 13a and 13b and third discharge holes 14a and 14b. There are two openings left and right.
The short hole 4 is attached to the supply hole 11, the first discharge holes 12a and 12b, the second discharge holes 13a and 13b, and the third discharge holes 14a and 14b. When the multi-branch chamber 1 is actually used, the duct 3 is attached to all the short rods 4, but FIG. 1 shows a state where the duct 3 is attached to only one short rod 4.

  The difference between the second discharge holes 13a and 13b and the third discharge holes 14a and 14b depends on the distance from the first discharge holes 12a and 12b to the supply hole 11 side. Two second discharge holes 13a and 13b are opened, but since the distance from the first discharge holes 12a and 12b is the same, the second discharge holes are the same. It should be noted that it is not necessary to be completely the same, and those located at substantially the same distance may be the same second and third discharge holes.

Next, the adjustment wall will be described.
As shown by a broken line in FIG. 2A, the first adjustment wall 31 and the second adjustment wall 32 are arranged inside the box body 2.
FIG. 4 is a perspective view showing the first adjustment wall 31. The first adjustment wall 31 is a thin flat plate, and has a plurality of openings 34 formed therein. The shape of the opening 34 may be one in which many small-diameter holes are formed as shown in FIG. Instead of this form, the diameter may be relatively large.
As shown in FIGS. 2A and 2B, the first adjustment wall 31 stands from the bottom surface inside the box body 2 between the first discharge holes 12a and 12b and the second discharge holes 13a and 13b. Let them be arranged.

Since the gas supplied from the supply hole 11 to the inside of the box body 2 through the duct 3 proceeds in a straight line if there is no obstacle, the first discharge surface 22a located at a position facing the supply surface 21 with the supply hole 11, 22b is discharged as it is from the first discharge holes 12a and 12b (direction A in FIG. 2A).
Therefore, even if the discharge holes are opened on the other surface of the box body 2, the discharge amount from the first discharge holes 12a and 12b is still large, and the discharge amount (flow rate) cannot be made uniform. .

  Therefore, as shown in FIG. 2A, the first adjustment wall 31 having the opening 34 is disposed on the supply hole 11 side of the first discharge holes 12 a and 12 b, thereby opening the first adjustment wall 31. The gas that has passed through 34 is discharged from the first discharge holes 12a and 12b as it is, and the gas that is blocked from passing through the portion other than the opening 34 of the first adjustment wall 31 is not discharged from the first discharge holes 12a and 12b. The second discharge holes 13a and 13b in the vicinity thereof are discharged (direction B in FIG. 2A).

  As shown in FIG. 7, in the rectifying member 104 that adjusts the gas discharged from the conventional discharge port 103, the gas supplied to the rectifying member 104 collides and a turbulent flow is generated inside the chamber body 101 and is discharged. There was a problem that the pressure was low. As a result, it may not be possible to send a certain distance through the duct. According to the adjustment of this embodiment, the gas that has passed through the opening 34 is discharged as it is from the first discharge holes 12a and 12b, so that the pressure is less likely to be reduced and uniform discharge is possible.

Next, when the third discharge holes 14a and 14b are opened, as shown in FIGS. 2 (a), 2 (b), and 5, the second adjustment wall 32 is connected to the second discharge holes 12a and 12b and the third discharge holes. It arrange | positions in the position between hole 13a, 13b.
Further, as shown in FIGS. 2B and 5, unlike the first discharge holes 12 a and 12 b and the second discharge holes 13 a and 13 b, the third discharge holes 14 a and 14 b are arranged in the vertical direction of the box 2. The second adjustment wall 32 is erected from the bottom surface 25 inside the box body 2 and extends to the vicinity of the upper ends of the third discharge holes 14a and 14b. This is part 35.
As shown in FIG. 5, the second adjustment wall 32 has an opening 34 formed in the same manner as the first adjustment wall 31, but the opening ratio of the second adjustment wall 32 is lower. is there. Specifically, the opening 34 of the first adjustment wall 31 is a plurality of round opening holes, whereas the opening of the opening of the second adjustment wall 32 has a small diameter. Thereby, compared with the 1st adjustment wall 31, the direction of the 2nd adjustment wall 32 is hard to let gas pass.

FIG. 2A shows the gas discharge direction when the third discharge holes 14a and 14b are opened and the second adjustment wall 32 is used.
Since the third discharge holes 14a and 14b are located on the lower side in the vertical direction of the box body 2, among the gases supplied from the supply holes 11, those passing above the third discharge holes 14a and 14b are: When passing through the opening 34 of the first adjustment wall 31 as described above, it is discharged from the first discharge holes 12a and 12b (direction A in FIG. 2A), and when blocked by the first adjustment wall 31, the second. It discharges | emits from the discharge holes 13a and 13b (B direction of Fig.2 (a)). This is because the upper side of the second adjustment wall 32 is opened by the opening portion 35, so that gas passing through this portion is not blocked by the second adjustment wall 32.

Of the gas supplied from the supply hole 11, the gas passing through the lower side in the vertical direction of the box 2 is blocked by the gas passing through the opening 34 of the second adjustment wall 32 and the second adjustment wall 32. There is a thing.
The gas that has passed through the opening 34 of the second adjustment wall 32 passes through the first adjustment wall 31 and is discharged from the first discharge holes 12a and 12b, as well as the gas flowing in the A direction, and the first adjustment wall. It is divided into those which are blocked by 31 and discharged from the second discharge holes 13a and 13b (direction C in FIG. 2A).
The gas blocked by the second adjustment wall 32 is discharged from the nearby third discharge holes 14a and 14b.
Thereby, the flow volume and the air volume of the gas discharged from the multi-branch chamber 1 can be made uniform.

As shown in FIG. 5, the second adjustment wall 32 has its bottom side and both side sides fixed to the bottom surface and both side surfaces inside the box 2, and only the upper side is open. The height of the upper side of the second adjustment wall 32 is up to about half of the height inside the box body 2, and the upper side forms an opening 35. Specifically, when the height of the inside of the box 2 is 330 mm, the height of the second adjustment wall 32 is about 150 mm, and the open portion 35 of 180 mm is formed above.
The first adjustment wall 31 is also fixed to the bottom surface and both side surfaces on the inner side of the box body 2, as in the second adjustment wall 32. For convenience of attachment, the upper side of the first adjustment wall 31 is not a height until it contacts the upper surface of the box body 2.
Moreover, it is preferable that the opening ratio of the opening 34 of the first adjusting wall 31 is about 40% and the opening ratio of the opening 34 of the second adjusting wall 32 is about 33%.

The above is the case of the first embodiment of the present invention shown in FIG. 1, FIG. 2 (a), (b), and FIG. As shown in FIGS. 3A and 3B, when the embodiment is different, such as when there are the fourth discharge holes 15a and 15b of the second embodiment, the open area of the opening 35 and the opening 34 are appropriately selected. It is desirable to change the opening rate.
As shown in FIG. 3 (b), not only the first adjustment wall 31 and the second adjustment wall 32 but also the third adjustment wall 33 is provided between the fourth discharge holes 15a and 15b and the third discharge holes 14a and 14b. Deploy.
The second adjustment wall 32 and the third adjustment wall 33 are approximately half the height inside the box 2 as in the first embodiment, but the third adjustment wall 33 fixes the upper side and both sides. This is different from the second adjustment wall 32 in that respect.
In this case, it is preferable that the opening ratio of the opening 34 of the third adjustment wall is about 31%.

The experimental result of the multi-branch chamber 1 concerning this 1st Example is shown.
In the experiment, a certain amount of air is sent from the blower to the multi-branch chamber 1 through the duct 3 and the amount of air is measured through the duct 3 from each of the six discharge holes 12a, 12b, 13a, 13b, 14a, 14b.
The amount of air from the blower is 200 cubic meters, 400 cubic meters, 600 cubic meters, 800 cubic meters, and 1000 cubic meters per hour, and indicates the amount of air actually discharged from the respective discharge holes. In addition, the error between the air volume that is theoretically branched evenly when 6 branches and the actual air volume that is exhausted is shown.
In addition, the wind velocity of the gas before being supplied to the box 2 and the gas density after being discharged from each discharge hole, the air density, the pressure difference between the gas before being supplied and after being discharged were measured, and the resistance coefficient was calculated by the following equation. .

Thus, according to the multi-branch chamber 1 according to the first embodiment, the air volume discharged from each discharge hole is between -5% and + 5%, and the entire air volume can be maintained as a whole.
Further, the resistance coefficient of the present example is 1.29 at the maximum, and the average value is as low as 1.018. On the other hand, for the prior art shown in FIG. 7 as well, when the same test method was used to measure each of the resistance coefficients measured at the same position as in this example, the average in the case of this example was higher than in the case of the prior art. It has been found that the resistance coefficient is reduced by about 60%. This indicates that there is less resistance than the prior art.
This shows that the multi-branch chamber in the present embodiment is less likely to generate turbulent flow and can reduce the decrease in pressure.

FIG. 6 shows a third embodiment of the present invention.
In the third embodiment, unlike the first embodiment and the second embodiment, the first adjustment wall 31 and the second adjustment wall 32 are formed to be curved. Specifically, the central portions of the first adjustment wall 31 and the second adjustment wall 32 in which a large number of openings 34 are formed as shown in FIG. It is curved in a U shape so as to come toward the discharge hole 12. In the third embodiment of FIG. 6, both the first adjustment wall 31 and the second adjustment wall 32 are curved adjustment walls, but only the first adjustment wall 31 or only the second adjustment wall, Only the adjustment wall may be curved, and other adjustment walls may not be curved.

By using the first adjustment wall 31 and the second adjustment wall 32, the gas blocked without passing through the opening 34 flows in the direction of the second discharge holes 13a and 13b and the third discharge holes 14a and 14b. It becomes easy. This is because the first adjustment wall 31 and the second adjustment wall 32 are curved, so that gas easily flows in the curved direction. In addition, since the first adjustment wall 31 and the second adjustment wall 32 having a large number of openings 34 are curved as shown in FIG. 4, the openings 34 are projected from the front as they become sideways. The area is reduced. For this reason, it is difficult for the gas flowing in from the front to pass through the openings 34 of the first adjustment wall 31 and the second adjustment wall 32, and is easily discharged to the second discharge holes 13a and 13b and the second discharge holes 14a and 14b. .
For this reason, even when an adjustment wall having a higher aperture ratio is used, gas can be discharged from the second discharge holes 13a and 13b and the third discharge holes 14a and 14b.

DESCRIPTION OF SYMBOLS 1 ... Multi-branch chamber, 2 ... Box, 3 ... Duct, 4 ... Short rod, 11 ... Supply hole, 12 ... First discharge hole, 13 ... Second discharge hole, 14 ... Third discharge hole, 15 ... Fourth Discharge hole, 21 ... supply surface, 22 ... first discharge surface, 23 ... second discharge surface, 24 ... upper surface, 25 ... bottom surface, 31 ... first adjustment wall, 32 ... second adjustment wall, 33 ... third adjustment wall 34 ... Opening part, 35 ... Opening part, 101 ... Chamber body, 102 ... Introduction hole, 103 ... Discharge hole, 104 ... Rectification member

Claims (5)

A hollow box,
Opening the supply surface of the box, supplying a gas into the box,
In a multi-branch chamber having a plurality of discharge holes for discharging the gas inside the box on a surface other than the supply surface,
The discharge hole has at least a first discharge hole on the first discharge surface facing the supply surface and a second discharge hole of a second discharge surface other than the first discharge surface,
A flow adjustment mechanism for a multi-branch chamber, wherein a first adjustment wall provided with an opening is disposed between the first discharge hole and the second discharge hole. A second discharge hole and a third discharge hole located on the supply hole side from the second discharge hole;
Between the second discharge hole and the third discharge hole, arrange a second adjustment wall provided with an opening,
The flow control mechanism of a multi-branch chamber according to claim 1, wherein an opening is provided around the second adjustment wall.   The flow rate adjusting mechanism for a multi-branch chamber according to claim 1, wherein the second adjusting wall has an opening having an opening ratio lower than that of the opening of the first adjusting wall.   The multi-branch according to claim 2, wherein the second discharge hole and the third discharge hole are arranged in two upper and lower stages on both side surfaces orthogonal to the discharge direction of the supply hole and the first discharge hole. Chamber flow rate adjustment mechanism. Open the discharge holes sequentially from the third discharge hole to the supply hole side,
Between the sequentially opened discharge hole and the discharge hole on the first discharge hole side of the discharge hole, there is an adjustment wall having an open part around,
4. The multi-branch chamber according to claim 2, wherein an opening area of the adjustment wall and the adjustment wall on the supply hole side of the one adjustment wall are sequentially reduced. Flow rate adjustment mechanism.

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