JP3036315U - Branch pipe with damper - Google Patents

Abstract

(57) Abstract: [PROBLEMS] To provide a branch pipe with a damper that can be installed in a relatively small installation space and that can individually adjust the flow rates of branched fluids. SOLUTION: A plurality of blow-out pipes 7 ... Are connected to a circular arc 6 of a downstream wall 4b of a branch box 4 at regular intervals. Therefore, since the plurality of outlet pipes 7 can be arranged in a relatively small space, the branch pipe 1 with a damper can be installed in a relatively small installation space, and the flow rate of the fluid can be individually set for each damper. It will be adjustable.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a branch pipe with a damper, and more specifically, it is a branch pipe with a damper that can divide a fluid such as air flowing in a pipe substantially evenly and adjust the flow rate of the branched fluid individually.

[0002]

[Prior art]

 A branch pipe with a damper connects a plurality of blow-out pipes through a branch box to a blow-in pipe connected to a gas supply facility (blower, compressor, air-conditioning pipe, etc.), and these plural blow-out pipes are used for flow rate adjustment. It is equipped with a damper. According to this branch pipe with a damper, after the air is branched into a plurality of outlet pipes in the branch box, the flow rate of the branched air can be adjusted by the damper.

[0003]

[Problems to be solved by the device]

 In a conventional branch pipe with a damper, a rectangular parallelepiped flat box is used for a branch box, a blow pipe is connected to an upstream side wall of the flat box, and a plurality of blow pipes are connected to a downstream side wall. However, since most of them do not have a rectifying structure inside, there is a problem that the ejection flow rate is not uniform and it is difficult to make fine adjustments after installing by connecting pipes.

[0004] Also, there is a case where the branch box is tapered from the blow pipe to the blow pipe to ensure the uniformity of the ejection amount, but in this case, since the branch box becomes long, it is installed. There was a problem that it took up a lot of space.

[0007] Also, there is a solution of the above problems in which a current plate is provided. However, since these branch pipes with dampers are arranged on the same plane, the number of blowout pipes increases. As the blow-out pipes are installed on the same plane as they expand, there is a problem that as the number of blow-out pipes increases, a large space is required to install the branch pipes with dampers.

This invention provides a branch pipe with a damper that can equalize the blowout amount without using a structure such as a current plate inside and can be installed in a relatively small installation space. The above problem is to be solved.

[0007]

[Means for Solving the Problems]

 Therefore, according to claim 1 of the present invention, the blow pipe connected to the fluid supply source, the branch box connecting the blow pipe to the upstream wall, and the downstream wall of the branch box connected to the downstream wall at regular intervals on an arc. It consists of a plurality of outlet pipes and a damper that adjusts the flow rate of the fluid in the outlet pipes in preparation for the plurality of outlet pipes.The fluid supplied from the fluid supply source to the inlet pipe is branched by a branch box to form a plurality of outlet pipes. It is a branch pipe with a damper that is characterized by leading to

In the branch pipe with the damper according to the present invention described above, a plurality of outlet pipes are connected to the downstream wall of the branch box at regular intervals on an arc. Therefore, multiple outlet pipes can be placed in a relatively small space, and the branch pipe with damper can be made compact and installed in a small installation space.

A second aspect of the present invention is the branch pipe with a damper, wherein the branch box is a cylindrical box having a diameter larger than that of the blow pipe. By making the branch box a cylindrical box, the air entering from the air inlet located at the center of the upstream wall hits the center of the downstream wall and is evenly arranged on the circumference at the same distance from the center of the wall. Is almost evenly discharged to the outlet. For this reason, it becomes possible to evenly distribute the air to the respective outlets without the straightening vane. Moreover, since the diameter of the blow pipe can be increased as compared with the conventional flat box, the diameter of the blow pipe can be set to a suitable size.

A third aspect of the present invention is a branch pipe with a damper, wherein the branch box is a frustoconical box in which the diameter of the upstream wall is larger than the diameter of the blow pipe and smaller than the diameter of the downstream wall. . By making the branch box a truncated cone box, the fluid flowing into the branch box can be dispersed more efficiently than in the second aspect.

[0011]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a branch pipe with a damper (first embodiment) according to the present invention. The damper-equipped branch pipe 1 includes a blow pipe 2 whose one end 2a side is connected to an air supply source (not shown), a branch box 4 whose upstream wall 4a is connected to the other end 2b of the blow pipe 2, and a branch box 4. It is composed of four blow-out pipes 7 ... Connected to the downstream wall 4b and a damper 10 provided for the blow-out pipes 7 ...

FIG. 2 is a front view of a damper-equipped branch pipe according to the present invention (first embodiment). The branch box 4 is a cylindrical box having a diameter larger than that of the blow pipe 2, and is a member whose upstream end and downstream end are closed by an upstream wall 4a (see FIG. 1) and a downstream wall 4b, respectively.

Further, the branch pipe 4 is provided with mounting pieces 5 and 5 on its outer peripheral wall at intervals of 180 °, and a long hole 5a into which a mounting bolt (not shown) is fitted. (See FIG. 1) are provided. The mounting bolt is a member for fixing the branch box 4.

The branch box 4 is connected to the outlet pipes 7 ... On the circular arc 6 of the diameter R of the downstream wall 4b at intervals of 90 °. As a result, the four blow-out pipes 7 ... Can be arranged in the space L1 for approximately two pipes, so that the branch pipe 1 with a damper can be made compact and installed in a small installation space (FIG. 3). reference).

FIG. 4 is a sectional view taken along the line IV-IV of FIG. 1, showing a damper 10 according to the present invention. The damper 10 is a member that adjusts the opening ratio in the blow-out pipe 7 to adjust the air flow rate in the blow-out pipe 7. The damper 10 includes a rotary spindle 11 having the tip 11a side inserted into the blow-out pipe 7, a butterfly plate 12 attached to the tip 11a of the rotary spindle 11, and a male screw portion of the rotary spindle 11. A tightening screw body 13 screwed to 11b and an operating handle 14 fixed to the base end 11c side of the rotary support shaft 11 via nuts 15 and 16 are provided.

FIG. 5 is an exploded perspective view of a damper according to the present invention. The rotary support shaft 11 is a member that is inserted through the tip portion 11a side so as to be orthogonal to the blowout pipe 7 through a hole 7a formed in the pipe wall of the blowout pipe 7, and is a portion that protrudes to the outside of the blowout pipe 7 (middle). A male screw portion 11b is provided in the range from the central portion to the base end portion 11c).

The butterfly plate 12 is a partition plate having a diameter slightly smaller than the inner diameter of the blowout pipe 7, and is a member fixed to the rotary support shaft 11 via a screw 18 and arranged in the blowout pipe 7. As a result, the butterfly plate 12 can be rotated in the blowout pipe 7 about the rotation support shaft 11 to adjust the size of the flow path in the blowout pipe 7.

The tightening screw body 13 is a member for tightening and loosening the spring 19 sandwiched between the discharge pipe 7 and the pipe wall 7b. As a result, when the tightening screw body 13 is turned clockwise, the spring 19 is to be tightened between the tightening screw body 13 and the pipe wall 7b, and the spring 19 fixes the pipe wall 7b of the blowout pipe 7. Press to lock the rotation support shaft 11. On the other hand, when the tightening screw body 13 is rotated counterclockwise, the tightening of the spring 19 is loosened, the pressing force of the spring 19 on the pipe wall 7b is released, and the rotation support shaft 11 is rotatable. Become.

The operating handle 14 is a steel plate bent in a substantially U-shape, and is a member fixed by being sandwiched by nuts 15 and 16 and inserted into the rotary support shaft 11 (see FIG. 4).

The operation of the damper-equipped branch pipe according to the present invention constructed as above will be described. FIG. 6 is a sectional view taken along line VI-VI in FIG. 3, and is an operation explanatory view of the damper-equipped branch pipe (first embodiment) according to the present invention.

When air is supplied into the blow-in pipe 2 from an air supply source (not shown), the air flows into the branch box as shown by an arrow A. The air that has flowed into the branch box 4 branches as shown by arrow B and flows into the blowout pipes 7. In this case, since the branch box 4 is formed in a cylindrical shape, the air that has entered from the blow-in port located in the center of the upstream wall hits the center of the downstream wall, and is on the circumference of the same distance from the center of the wall. It is almost evenly discharged to the outlets arranged at equal intervals. For this reason, it is possible to evenly distribute the air to the outlets without the straightening vane. Moreover, since the diameter of the blow pipe can be increased as compared with the conventional flat box, the diameter of the blow pipe can be set to a suitable size.

The flow rate of air passing through the blow-out pipes 7 can be adjusted by the dampers 10. Hereinafter, a method of adjusting the damper 10 will be described. First, the tightening screw body 13 is loosened and moved in a direction away from the pipe wall 7b of the blowoff pipe 7. As a result, the spring 19 extends and the pressing force of the spring 12 against the tube wall 7b is released. When the operation handle 14 is turned in this state, the rotary support shaft 11 rotates, the butterfly plate 12 rotates about the rotary support shaft 11, and the butterfly plate 12 moves in the air flow direction of the blow pipe 7 (direction of arrow C). On the other hand, the air flow rate of the blow-out pipe 7 can be adjusted by positioning at a desired angle.

Next, a second embodiment will be described. FIG. 7 is a front view of a branch pipe with a damper (second embodiment) according to the present invention. 7, the same members as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

The damper-equipped branch pipe 20 includes a branch box 4 and three discharge pipes 7. That is, the branch box 4 is connected on the circular arc 6 of the diameter R of the downstream wall 4b with an interval of 120 °, and the three outlet pipes 7 are connected. As a result, the three blow-out pipes 7 ... Can be arranged in the space L2 for about two pipes, so that the damper-equipped branch pipe 20 can be compacted and installed in a small installation space.

Next, a third embodiment will be described. FIG. 8 is a front view of a damper-equipped branch pipe (third embodiment) according to the present invention. In FIG. 8, the same members as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

The damper-equipped branch pipe 25 is provided with three discharge pipes 7 ... In the branch box 4. That is, the branch box 4 is connected on the circular arc 6 of the diameter R of the downstream wall 4b at five equal intervals to each other. As a result, the five blowoff pipes 7 can be arranged in the space L3 for approximately three pipes, so that the branch pipe with damper 25 can be made compact and installed in a small installation space.

Next, a fourth embodiment will be described. FIG. 9 is a front view of a branch pipe with a damper (fourth embodiment) according to the present invention. In FIG. 9, the same members as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

The damper-equipped branch pipe 30 includes a branch box 4 and six discharge pipes 7. That is, the branch box 4 is connected on the circular arc 6 having the diameter R of the downstream wall 4b at six intervals at equal intervals. As a result, the six blow-out pipes 7 ... Can be arranged in the space L4 for approximately three pipes, so that the branch pipe 30 with a damper can be made compact and can be installed in a small installation space.

Next, a fifth embodiment will be described. FIG. 10 is a front view of a branch pipe with a damper (fifth embodiment) according to the present invention. In FIG. 10, the same members as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

The damper-equipped branch pipe 35 includes a branch box 4 and seven discharge pipes 7. That is, the branch box 4 is connected on the circular arc 6 of the diameter R of the downstream wall 4b at seven intervals at equal intervals. As a result, the seven blow-out pipes 7 ... Can be arranged in the space L5 for approximately three pipes, so that the branch pipe with a damper 35 can be made compact and installed in a small installation space.

Next, a sixth embodiment will be described. FIG. 11 is a front view of a branch pipe with a damper (sixth embodiment) according to the present invention. In FIG. 11, the same members as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

The damper-equipped branch pipe 40 is provided with eight discharge pipes 7 ... In the branch box 4. That is, the branching box 4 is connected to the arc 6 having the diameter R of the downstream wall 4b by connecting eight blowout pipes 7 at equal intervals. As a result, the eight blow-out pipes 7 ... Can be arranged in the space L6 for approximately three pipes, so that the branch pipe 40 with a damper can be made compact and installed in a small installation space.

In the first to sixth embodiments, the case where the cylindrical branch box 4 is used has been described, but the present invention is not limited to this, and the branch box may be a truncated cone box, for example. In this case, the frustoconical box has a shape in which the diameter of the upstream wall is larger than the diameter of the blow pipe 2 and smaller than the diameter of the downstream wall. As a result, it is possible to more efficiently prevent the occurrence of turbulence in the fluid flowing into the branch box.

[0034]

[Effect of the invention]

 Therefore, according to claim 1 of the present invention, since a plurality of blow-out pipes are connected to the downstream wall of the branch box at regular intervals in an arc, the plurality of blow-out pipes can be arranged in a relatively small space, and the damper can be arranged. The attached branch pipe can be made compact and can be installed in a small installation space.

According to a second aspect of the present invention, by making the branch box a cylindrical box, the air entering from the blow-in port arranged in the central part of the upstream wall hits the central part of the downstream wall, and is located at the same distance from the center of the same. The air is discharged evenly to the air outlets arranged at equal intervals on the circumference. Therefore, it is possible to evenly distribute the air to each of the outlets without the straightening vane. Moreover, since the diameter of the blow pipe can be increased as compared with the conventional flat box, the diameter of the blow pipe can be set to a suitable size.

According to the third aspect, by making the branch box a truncated cone-shaped box, the fluid flowing into the branch box can be more efficiently dispersed than that of the second aspect.

[Brief description of the drawings]

FIG. 1 is a plan view of a branch pipe with a damper according to the present invention (first embodiment).

FIG. 2 is a front view of a branch pipe with a damper according to the present invention (first embodiment).

FIG. 3 is a view taken in the direction of the arrow III in FIG. 1;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 1;

FIG. 5 is an exploded perspective view of a damper according to the present invention.

FIG. 6 is a sectional view taken along line VI-VI of FIG. 3;

FIG. 7 is a front view of a branch pipe with a damper (second embodiment) according to the present invention.

FIG. 8 is a front view of a branch pipe with a damper (a third embodiment) according to the present invention.

FIG. 9 is a front view of a branch pipe with a damper (fourth embodiment) according to the present invention.

FIG. 10 is a front view of a branch pipe with a damper (fifth embodiment) according to the present invention.

FIG. 11 is a front view of a branch pipe with a damper (sixth embodiment) according to the present invention.

[Explanation of symbols]

 1, 20, 25, 30, 35, 40 ... Branch pipe with damper 2 ... Blow pipe 2a ... One end of blow pipe 2b ... Other end of blow pipe 4 ... Branch box 4a ... Upstream wall of branch box 4b ... Downstream of branch box Wall 6 ... Arc 7 ... Blowout pipe 10 ... Damper

Claims (3)

[Utility model registration claims] 1. A blow pipe connected to a fluid supply source, a branch box connecting the blow pipe to an upstream wall, and a plurality of blow pipes connected to a downstream wall of the branch box in a circular shape at regular intervals. And a damper that adjusts the flow rate of the fluid in the blow-out pipe in preparation for the plurality of blow-out pipes, and the fluid supplied from the fluid supply source to the blow-in pipe is branched by the branch box and guided to the plurality of blow-out pipes. Branch pipe with damper. 2. The branch pipe with a damper according to claim 1, wherein the branch box is a cylindrical box having a diameter larger than that of the blow pipe. 3. The branch pipe with a damper according to claim 1, wherein the branch box is a frustoconical box in which the diameter of the upstream wall is larger than the diameter of the blow pipe and smaller than the diameter of the downstream wall. .