JP2020032339A - Separation system - Google Patents

Abstract

To provide a separation system that can improve separation performance.SOLUTION: A separation system 100 comprises a casing 5, a rotating body 3, a vane 36, a motor, an inflow pipe 201, an exhaust pipe 202 and an outflow pipe 203. The casing 5 is formed in a cylindrical shape in which a first end 51 and a second end 52 are closed. The casing 5 has a first opening formed at the first end 51 side in a side wall 56, a second opening formed at the second end 52 side in the side wall 56 and an exhaust hole 25 formed between the first opening and the second opening in the side wall 56. The inflow pipe 201 extends, from a peripheral edge of the first opening in the casing 5, in a first tangential direction of a side surface 58 of the casing 5 and has an inflow port 204 at a tip thereof. The exhaust pipe 202 extends, from a peripheral edge of the second opening in the casing 5, in a second tangential direction of the side surface 58 of the casing 5 and has an exhaust port 205 at a tip thereof. The outflow pipe 203 is branched from the exhaust pipe 202 and has an outflow port 206 at a tip thereof.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to separation systems, and more particularly, to a separation system for separating solids contained in a gas from the gas.

  Conventionally, a centrifuge comprising a shaft, a cylindrical confinement wall, a blade, a motor, a removal means, an outlet fan, and a separator outlet. An apparatus is known (Patent Document 1).

  A cylindrical confinement wall surrounds and is coaxial with the shaft. The blade is located between the shaft and the cylindrical confinement wall and is connected to the shaft. The removal means is provided on the cylindrical confinement wall. Here, the discharge means is provided at a position closer to the outlet opening than at a position closer to the inlet opening.

U.S. Pat. No. 5,149,345

  Not only the centrifugal separator described in Patent Literature 1, but also a tangential inflow cyclone in which the dust-containing gas flows into the cylinder from the duct along the tangential direction, the dust-containing gas is introduced from the duct along the axial direction of the cylinder. Since the pressure loss can be reduced as compared with the introduced cyclone, there is an advantage that the load on the motor can be reduced and energy can be saved. However, in a tangential inflow cyclone, the pressure gain is large and the air volume is likely to be large, so that the separation performance (for example, separation efficiency) is reduced.

  An object of the present disclosure is to provide a separation system capable of improving separation performance.

  A separation system according to an aspect of the present disclosure includes a casing, a rotating body, a blade, a motor, an inflow pipe, a discharge pipe, and an outflow pipe. The casing has a cylindrical shape with a first end and a second end closed. The casing has a first opening formed on the first end side on a side wall, a second opening formed on the second end side on the side wall, and the first opening and the second opening on the side wall. And a discharge hole formed therebetween. The rotating body is arranged inside the casing such that a rotation center axis is aligned with a center axis of the casing. The blade is connected to the rotating body, and protrudes from the rotating body toward an inner peripheral surface of the casing. The motor rotates the rotating body around the rotation center axis. The inflow pipe extends from a periphery of the first opening in the casing in a first tangential direction on a side surface of the casing, and has an inflow port at a distal end. The discharge pipe extends from a peripheral edge of the second opening in the casing in a second tangential direction of a side surface of the casing, and has a discharge port at a tip. The outlet pipe is branched from the exhaust pipe and has an outlet at a tip.

  The separation system according to the present disclosure can improve the separation performance.

FIG. 1 is a schematic configuration diagram of a separation system according to Embodiment 1 of the present disclosure. FIG. 2A is a perspective view of a main part of the separation system as viewed from the inlet side of the cylindrical body. FIG. 2B is a perspective view of a main part of the separation system as viewed from the outlet side of the cylindrical body. FIG. 3 is an exploded perspective view of a main part of the separation system. FIG. 4 is a cross-sectional view taken along a central axis of a casing, showing a cyclone and a cover in the separation system according to the first embodiment. FIG. 5 is a cross-sectional view illustrating a cyclone in the separation system according to the first embodiment and corresponding to the X1-X1 cross section in FIG. FIG. 6 is a cross-sectional view illustrating a cyclone in the separation system according to the first embodiment and corresponding to a cross section X2-X2 in FIG. FIG. 7 is a cross-sectional view showing a cyclone in the separation system according to the first embodiment and corresponding to a cross section X3-X3 in FIG. FIG. 8 is a schematic configuration diagram of a separation system according to Embodiment 2 of the present disclosure. FIG. 9 is a schematic configuration diagram of a separation system according to Embodiment 3 of the present disclosure. FIG. 10 is a front view of a main part of the separation system.

  1 to 10 described in the following first to third embodiments are schematic diagrams, and the ratio of the size and thickness of each component in the drawings does not necessarily reflect the actual dimensional ratio. Not necessarily.

(Embodiment 1)
Hereinafter, a separation system 100 according to the first embodiment will be described with reference to FIGS.

The separation system 100 is provided, for example, on the upstream side of an air conditioner having a blowing function, and separates solids in air (gas). The air conditioner is, for example, a blower that blows air from an upstream side to a downstream side. The blower is, for example, an electric fan. The air conditioner is not limited to the blower, but may be, for example, a ventilator, an air conditioner, an air supply cabinet fan, or an air conditioning system including a blower and a heat exchanger. Flow rate of air flowing through the cyclone 1 by the air conditioning equipment, for example, a 100m ³ / h~300m ³ / h. The amount of outflow from the separation system 100 to the air conditioning equipment side is substantially the same as the flow rate of air flowing through the air conditioning equipment.

  The separation system 100 includes a casing 5, a rotating body 3, a plurality of blades 36, a motor 4 (see FIGS. 3 and 4), an inlet pipe 201, an outlet pipe 202, and an outlet pipe 203.

  The casing 5 has a tubular shape in which the first end 51 and the second end 52 are closed. The casing 5 includes a first opening 53 (see FIG. 6) formed on the side of the first end 51 on the side wall 56, a second opening 54 (see FIG. 7) formed on the side of the second end 52 on the side wall 56, And a discharge hole 25 formed between the first opening 53 and the second opening 54 in the side wall 56.

  The rotating body 3 is disposed inside the casing 5 such that the rotation center axis 30 is aligned with the center axis 50 of the casing 5 (see FIG. 4).

  The plurality of blades 36 are connected to the rotating body 3 and protrude from the rotating body 3 toward the inner peripheral surface 57 of the casing 5 (see FIGS. 4 and 5).

  The motor 4 (see FIGS. 3 and 4) rotates the rotating body 3 around the rotation center axis 30. Thereby, in the separation system 100, the plurality of blades 36 rotate around the rotation center axis 30 together with the rotating body 3.

  The inflow pipe 201 extends from the periphery of the first opening 53 (see FIG. 6) in the casing 5 and has an inflow port 204 (see FIG. 6) at the tip.

  The discharge pipe 202 extends from the periphery of the second opening 54 (see FIG. 7) in the casing 5 and has a discharge port 205 (see FIG. 7) at the tip. The outflow pipe 203 is branched from the exhaust pipe 202 and has an outflow port 206 at the tip.

  The casing 5 includes a tubular body 2, a bottomed first tubular end cap 16, and a bottomed second tubular end cap 17. The cylinder 2 has a gas inlet 23 at a first end 21 and a gas outlet 24 at a second end 22.

  The first end cap 16 is arranged on the first end 21 side of the cylinder 2 and covers the inlet 23 of the first end 21 of the cylinder 2. Here, the internal space of the first end cap 16 is connected to (communicates with) the inlet 23 of the cylindrical body 2. In the casing 5, a first opening 53 is formed in the first end cap 16.

  The second end cap 17 is arranged on the second end 22 side of the cylinder 2 and covers the outlet 24 of the second end 22 of the cylinder 2. Here, the internal space of the second end cap 17 is connected to (communicates with) the outlet 24 of the cylindrical body 2. In the casing 5, a second opening 54 is formed in the second end cap 17.

  The rotating body 3 is disposed inside the cylindrical body 2 in the casing 5. In the separation system 100, as shown in FIG. 4, a flow path 19 extending from the inlet 23 to the outlet 24 is formed between the cylindrical body 2 and the rotating body 3.

  In the separation system 100, the motor 4 rotates the rotating body 3 as described above. Here, the separation system 100 includes the shaft 7 connected to both the rotating body 3 and the rotating shaft 42 of the motor 4. Further, the separation system 100 includes a shaft coupling (shaft coupling) 8 that connects the shaft 7 and the rotating shaft 42 of the motor 4 (see FIGS. 3 and 4). In the separation system 100, the motor 4 constitutes a driving device for rotating the rotating body 3.

  The separation system 100 includes a cover 10, an exhaust device, a cyclone 1 including the casing 5, the rotating body 3, the plurality of blades 36, the motor 4, the inflow pipe 201, the discharge pipe 202, and the outflow pipe 203. 13 is further provided. The cover 10 has an exhaust hole 105 and surrounds the casing 5 so as to cover the exhaust hole 25 of the casing 5. More specifically, the cover 10 surrounds the cylindrical body 2 among the cylindrical body 2, the first end cap 16, and the second end cap 17 included in the casing 5. The exhaust device 13 exhausts the inside of the cover 10 through the exhaust hole 105 of the cover 10.

  Further, the separation system 100 further includes a pressure sensor 14 and a control device 15. The pressure sensor 14 is disposed inside the cover 10. The control device 15 controls the exhaust device 13 according to the measurement value of the pressure sensor 14.

  The separation system 100 can flow the air flowing into the casing 5 from the upstream side through the inflow port 204 and flowing into the flow path 19 to the downstream side of the flow path 19 while spirally rotating around the rotating body 3. it can. The “upstream side” here means the upstream side (primary side) when viewed in the direction of air flow. Further, “downstream side” means the downstream side (secondary side) when viewed in the direction of air flow. The casing 5 has a discharge hole 25 (see FIGS. 3 and 5) that penetrates the casing 5 in the thickness direction of the cylindrical body 2 in order to discharge the solid contained in the air to the outside of the casing 5. The discharge hole 25 connects the internal space of the cylindrical body 2 and the external space of the cylindrical body 2 (the space between the cylindrical body 2 and the cover 10). In other words, the discharge hole 25 connects the inside and the outside of the casing 5.

  Examples of the solid in the air include fine particles and dust. Examples of the fine particles include a particulate substance. Examples of the particulate matter include primary product particles that are directly released into the air as fine particles, and secondary product particles that are generated as fine particles in the air that are released into the air as a gas. Examples of the primary particles include soil particles (eg, yellow sand), dust, plant particles (eg, pollen), animal particles (eg, mold spores), and soot. As the classification of the size of the particulate matter, for example, PM2.5 (fine particulate matter), PM10, SPM (suspended particulate matter), and the like can be given. PM2.5 is fine particles that pass through a particle sizer having a particle diameter of 2.5 μm and a collection efficiency of 50%. PM10 is fine particles that pass through a particle sizer having a particle diameter of 10 μm and a collection efficiency of 50%. SPM is a fine particle that passes through a particle sizer having a particle diameter of 10 μm and a collection efficiency of 100%, corresponds to PM 6.5-7.0, and is slightly smaller than PM10.

  Each component of the separation system 100 is described in more detail below.

  As described above, the separation system 100 includes the casing 5, the rotating body 3, the plurality of blades 36, the motor 4, the shaft 7, and the shaft coupling 8.

  Casing 5 includes cylindrical body 2, first end cap 16, and second end cap 17.

  The cylindrical body 2 is formed in a cylindrical shape, and has a gas inlet 23 at a first end 21 and a gas outlet 24 at a second end 22. The material of the cylinder 2 is, for example, ABS resin, but is not limited to this.

  The first end cap 16 is formed in a bottomed cylindrical shape, and includes a bottom wall 161 and a cylindrical side wall 162 protruding from the peripheral edge of the bottom wall 161 toward the cylindrical body 2. The inner diameter of the first end cap 16 is the same as the inner diameter of the cylindrical body 2, but is not limited thereto. In the casing 5, the first opening 53 (see FIG. 6) is formed in the side wall 162 of the first end cap 16. The material of the first end cap 16 is, for example, ABS resin, but is not limited to this.

  The second end cap 17 is formed in a bottomed cylindrical shape, and includes a bottom wall 171 and a cylindrical side wall 172 protruding from the peripheral edge of the bottom wall 171 toward the cylinder 2. The inner diameter of the second end cap 17 is the same as the inner diameter of the cylinder 2, but is not limited to this. In the casing 5, the second opening 54 (see FIG. 7) is formed in the side wall 172 of the second end cap 17. The material of the second end cap 17 is, for example, ABS resin, but is not limited to this.

  In the cyclone 1, as shown in FIG. 4, the inner peripheral surface 57 of the casing 5 includes the inner peripheral surface 27 of the cylindrical body 2, the inner side surface 167 of the side wall 162 of the first end cap 16, and the second end cap 17. And an inner side surface 177 of the side wall 172. The outer peripheral surface 58 of the casing 5 includes the outer peripheral surface 28 of the cylindrical body 2, the outer surface 168 of the side wall 162 of the first end cap 16, and the outer surface 178 of the side wall 172 of the second end cap 17.

  As shown in FIGS. 4 and 5, the rotating body 3 is disposed coaxially with the cylindrical body 2 inside the cylindrical body 2. The phrase “disposed coaxially with the cylinder 2” means that the rotating body 3 aligns the rotation center axis 30 (see FIG. 4) of the rotating body 3 with the center axis 20 (see FIG. 4) of the cylinder 2. It means that it is arranged in. The central axis 20 of the cylinder 2 defines a central axis 50 of the casing 5. In the rotating body 3, an outer peripheral line in a cross section orthogonal to the rotation center axis 30 (for example, see FIG. 5) is circular. The material of the rotating body 3 is, for example, a polycarbonate resin.

  In the direction along the rotation center axis 30 of the rotating body 3, the length of the rotating body 3 is shorter than the length of the cylindrical body 2. As shown in FIG. 4, the rotating body 3 has a first end 31 located on the inlet 23 side of the tubular body 2 and a second end 32 located on the outlet 24 side of the tubular body 2. The first end 31 of the rotating body 3 is located between the inlet 23 and the outlet 24 of the cylindrical body 2 and near the inlet 23 in a direction along the central axis 20 of the cylindrical body 2. The second end 32 of the rotating body 3 is located between the inlet 23 and the outlet 24 of the cylindrical body 2 and near the outlet 24 in a direction along the central axis 20 of the cylindrical body 2.

  A plurality of (here, 24) blades 36 connected to the rotating body 3 are arranged between the cylindrical body 2 and the rotating body 3. The material of each of the plurality of blades 36 is, for example, a polycarbonate resin.

  Each of the plurality of blades 36 is arranged such that a gap is formed between the plurality of blades 36 and the inner peripheral surface 27 of the cylindrical body 2 as shown in FIGS. In other words, in the separation system 100, there is a gap between each of the plurality of blades 36 and the inner peripheral surface 27 of the cylindrical body 2. That is, the length of each of the plurality of blades 36 protruding from the outer circumferential surface 37 of the rotating body 3 is determined by the distance between the outer circumferential surface 37 of the rotating body 3 and the inner circumferential surface 27 of the cylindrical body 2 in the radial direction of the rotating body 3. Is also short.

  Each of the plurality of blades 36 is arranged in a space (flow path 19) between the outer peripheral surface 37 of the rotating body 3 and the inner peripheral surface 27 of the cylindrical body 2 in parallel with the rotation center axis 30 of the rotating body 3. . In other words, the plurality of blades 36 are arranged between the rotating body 3 and the inner peripheral surface 57 of the casing 5 in parallel with the central axis 50 of the casing 5. Each of the plurality of blades 36 has a flat plate shape. Each of the plurality of blades 36 is inclined by a predetermined angle (for example, 45 degrees) with respect to one radial direction of the rotating body 3 when viewed from the inlet 23 side in a direction along the central axis 20 of the cylindrical body 2. Here, in each of the plurality of blades 36, the distal end on the side of the cylindrical body 2 in the protruding direction from the rotating body 3 is positioned behind the base end on the rotating body 3 side in the rotating direction A1 of the rotating body 3. I have. That is, in the separation system 100, each of the plurality of blades 36 is inclined by a predetermined angle (for example, 45 degrees) in the rotation direction A1 of the rotating body 3 with respect to the radial direction of the rotating body 3. The predetermined angle is not limited to 45 degrees, and may be an angle greater than 0 degrees and 90 degrees or less. For example, the predetermined angle may be an angle in a range from 10 degrees to 80 degrees. Each of the plurality of blades 36 is not limited to a case in which the blade 36 is inclined by a predetermined angle in the rotation direction A1 of the rotating body 3 with respect to the radial direction of the rotating body 3. May be 0 degrees. That is, the plurality of blades 36 may extend radially from the rotating body 3. The plurality of blades 36 are arranged at substantially equal intervals in the circumferential direction of the rotating body 3 as shown in FIG.

  As shown in FIGS. 3 and 4, the rotating body 3 includes two rotating members 3a and 3b arranged in a direction along the central axis 20 of the cylindrical body 2 (see FIG. 4). The rotating members 3a and 3b are formed in a bottomed cylindrical shape as shown in FIG. More specifically, the two rotating members 3a, 3b have bottom walls 33a, 33b at first ends 31a, 31b on the inlet 23 side, and openings 34a, 34b at second ends 32a, 32b on the outlet 24 side. Have. In the following, for convenience of explanation, the rotating member 3a located at a position (relatively upstream) near the inlet 23 of the two rotating members 3a and 3b is referred to as an upstream rotating member 3a, and is positioned closer to the outlet 24 (relatively). The downstream rotating member 3b may be referred to as the downstream rotating member 3b. In the cylindrical upstream rotating member 3a with a bottom, the bottom wall 33a is formed in a shape bulging toward the inlet 23 side. A reinforcing wall 38 integral with the upstream rotating member 3a is provided inside the upstream rotating member 3a. Further, inside the bottomed cylindrical downstream rotating member 3b, a cylindrical rib 39 protruding from the center of the bottom wall 33b of the downstream rotating member 3b toward the opening 34b is provided. In the direction along the central axis 20 of the cylindrical body 2, the length of the rib 39 is shorter than the length of the downstream rotation member 3b.

  In the cyclone 1, each of the plurality of blades 36 includes a blade piece 36a protruding from the outer peripheral surface of the upstream rotating member 3a and a blade piece 36b protruding from the outer peripheral surface of the downstream rotating member 3b. (See FIG. 4). In other words, in the separation system 100, a plurality (24) blade pieces 36a connected to the upstream rotation member 3a and a plurality (24) blade pieces 36b connected to the downstream rotation member 3b are paired. A plurality of (24) blades 36 are provided. Hereinafter, for convenience of description, the blade piece 36a may be referred to as an upstream blade piece 36a, and the blade piece 36b may be referred to as a downstream blade piece 36b.

  The plurality of upstream blade pieces 36a are arranged at equal angular intervals (15 degrees) in the circumferential direction of the rotating body 3. The “equiangular intervals” here need not be exactly the same intervals, but may be any angular intervals within a predetermined angle range (specified angle ± 20%: 15 degrees ± 3 degrees). The plurality of downstream blade pieces 36b are arranged at equal angular intervals (15 degrees) in the circumferential direction of the rotating body 3. The “equiangular intervals” here need not be exactly the same intervals, but may be any angular intervals within a predetermined angle range (specified angle ± 20%: 15 degrees ± 3 degrees). The one-to-one upstream blade piece 36a and the downstream blade piece 36b are aligned on a straight line in a direction parallel to the central axis 20 of the cylindrical body 2.

  The rotating body 3 is connected to a rotating shaft (shaft) 42 of the motor 4 via a shaft 7 and a shaft coupling 8 as shown in FIGS. More specifically, in the separation system 100, the rotating body 3 is connected to the shaft 7, and the shaft 7 is connected to the rotating shaft 42 of the motor 4 by the shaft coupling 8. In the cyclone 1, the rotation shaft 42 and the shaft 7 are arranged so as to be aligned.

  The motor 4 rotates the rotating body 3 around the rotation center axis 30 of the rotating body 3. The rotation speed of the rotating body 3 is, for example, 1500 rpm to 3000 rpm. The motor 4 is, for example, a DC motor. The motor 4 is driven by, for example, a drive circuit provided separately from the cyclone 1. Note that the drive circuit may be provided in the cyclone 1.

  As shown in FIG. 4, the motor 4 includes a motor main body 41 and the above-described rotating shaft 42 partially projecting from the motor main body 41. The rotation shaft 42 has a columnar shape. The motor 4 is arranged inside the rotating body 3. More specifically, the motor 4 is disposed inside the downstream rotation member 3b. Here, the cyclone 1 includes a motor housing 9 (see FIGS. 3 and 4) that houses the motor 4 and the shaft coupling 8. The motor housing 9 is housed in the downstream rotation member 3b. The motor housing 9 is fixed to a rear cover 12 described later by a plurality of screws.

  The material of the motor housing 9 is, for example, aluminum. The motor housing 9 has a housing body 90 and a flange 95 as shown in FIG. The housing main body 90 has a bottom wall 93 at a first end 91 on the inlet 23 side and an opening 94 on a second end 92 on the outlet 24 side. Here, in the motor housing 9, a circular hole 931 through which the shaft coupling 8 passes is formed in the bottom wall 93 of the housing main body 90. Further, the motor housing 9 has a bottomed cylindrical shaft coupling housing 98 that protrudes from the periphery of the hole 931 in the bottom wall 93 toward the inlet 23. In the motor housing 9, a circular hole 987 through which the shaft 7 passes is formed in the bottom wall 983 of the shaft coupling housing 98. The flange 95 protrudes from the second end 92 of the housing main body 90 radially outward of the housing main body 90. The flange portion 95 is provided for fixing the motor housing 9 to the rear cover 12 with a plurality of screws.

  The shaft 7 (see FIGS. 3, 4 and 5) is in the shape of a round bar and has a first end 71 in the longitudinal direction and a second end 72 opposite to the first end 71. The material of the shaft 7 is, for example, stainless steel. The shaft 7 is arranged such that its axis coincides with the rotation center axis 30 of the rotating body 3. In other words, the shaft 7 is arranged such that its axis coincides with the central axis 20 of the cylinder 2. The shaft 7 is partially disposed in the rotating body 3. More specifically, in the cyclone 1, the first end 71 of the shaft 7 is disposed outside the first end 21 of the cylinder 2 in a direction along the central axis 20 of the cylinder 2, and the second end of the shaft 7 The end 72 is disposed inside the downstream rotation member 3b. Here, as shown in FIG. 4, the shaft 7 has a hole 35a formed at the center of the bottom wall 33a of the upstream rotating member 3a and a hole 35b formed at the center of the bottom wall 33b of the downstream rotating member 3b. And, it passes. The rotating body 3 is connected to the shaft 7 by two bolts 78 (see FIG. 4) and two nuts corresponding to the two bolts 78 one-to-one. Each of the two bolts 78 passes through a hole that penetrates the shaft 7 in the radial direction. Thereby, the rotating body 3 can rotate together with the shaft 7.

  The cyclone 1 includes a first bearing 75 and a second bearing 76 (see FIGS. 3 and 4) that rotatably support the shaft 7. Thereby, in the cyclone 1, the rotating body 3 can be more stably rotated by the motor 4. In the cyclone 1, the first bearing 75 rotatably supports the first end 71 of the shaft 7. In the cyclone 1, the second bearing 76 rotatably supports a portion near the second end 72 of the shaft 7. The second bearing 76 is fixed to the bottom wall 983 of the shaft coupling housing 98 with two screws. The second end 72 of the shaft 7 is connected to the rotating shaft 42 of the motor 4 by the shaft coupling 8. The shaft coupling 8 is arranged inside the downstream rotation member 3b.

  The cyclone 1 further includes a front cover 11 and a rear cover 12, as shown in FIGS.

  The front cover 11 is detachably attached to a first flange 211 (see FIG. 2B) protruding outward from the first end 21 of the cylindrical body 2 by a plurality of (for example, four) screws. The rear cover 12 is detachably attached to a second flange 221 (see FIG. 3) protruding outward from the second end 22 of the cylindrical body 2 by a plurality of (for example, four) screws.

  When viewed from one direction along the center axis 20 of the tubular body 2, the outer peripheral shape of the front cover 11 is circular. As shown in FIG. 2A, the front cover 11 includes a first frame portion 111, a bearing mounting portion 112, and four first beam portions 113. The first frame portion 111 is disposed so as to overlap the first flange 211 of the tubular body 2. The outer peripheral shape of the first frame portion 111 is the same as the outer peripheral shape of the front cover 11. The inner peripheral shape of the first frame portion 111 is a circular shape. The inner diameter of the first frame portion 111 is substantially the same as the inner diameter of the cylinder 2. The first frame portion 111 is fixed to the first flange 211 with a plurality of screws. The bearing mounting portion 112 has an annular shape and is arranged inside the first frame portion 111. The first bearing 75 described above is attached to the bearing attachment portion 112. The four first beam portions 113 connect the first frame portion 111 and the bearing mounting portion 112. The four first beam portions 113 are arranged at substantially equal intervals in the circumferential direction of the bearing attachment portion 112. The first bearing 75 is a bush bearing, and is mounted on the bearing mounting portion 112 by being press-fitted into the bearing mounting portion 112. The material of the front cover 11 is, for example, aluminum.

  When viewed from one direction along the center axis 20 of the tubular body 2, the outer peripheral shape of the rear cover 12 is circular. As shown in FIG. 2B, the rear cover 12 includes a second frame portion 121, a housing attachment portion 122, and four second beam portions 123. The outer peripheral shape of the second frame portion 121 is the same as the outer peripheral shape of the rear cover 12. The inner peripheral shape of the second frame portion 121 is a circular shape. The inner diameter of the second frame portion 121 is preferably the same as the inner diameter of the cylinder 2. The second frame portion 121 is disposed so as to overlap with the second flange 221 (see FIG. 3) of the cylindrical body 2. The second frame portion 121 is fixed to the second flange 221 by a plurality of screws. The housing attachment part 122 is annular and is arranged inside the second frame part 121. The flange portion 95 of the motor housing 9 is disposed on the housing mounting portion 122 so as to overlap. The flange portion 95 of the motor housing 9 is fixed to the housing attachment portion 122 with a plurality of screws. The four second beam portions 123 connect the second frame portion 121 and the housing mounting portion 122. The four second beam portions 123 are arranged at substantially equal intervals in the circumferential direction of the housing attachment portion 122. The material of the rear cover 12 is, for example, aluminum.

  The cyclone 1 further includes a ventilation panel 18 as shown in FIGS. The outer peripheral shape of the ventilation panel 18 is substantially circular. The outer diameter of the ventilation panel 18 is the same as the outer diameter of the housing mounting portion 122 (see FIG. 2B) of the rear cover 12. A mesh 181 (see FIG. 4) is provided at the center of the ventilation panel 18. The ventilation panel 18 is disposed on the housing cover 122 on the side of the rear cover 12 opposite to the side of the cylinder 2. The ventilation panel 18 is fixed to the housing mounting part 122 by a plurality of screws.

  In the cyclone 1, the rotating direction of the rotating body 3 connected to the shaft 7 is the same as the rotating direction of the rotating shaft 42 of the motor 4 (see FIG. 4). The rotation direction of the rotating body 3 is a clockwise direction (the direction of the arrow A1 in FIG. 5) when viewed from the inlet 23 side of the cylindrical body 2. The rotation direction of the rotating body 3 is a counterclockwise direction when viewed from the outlet 24 side of the cylindrical body 2. The rotation angular velocity of the rotating body 3 is the same as the rotation angular velocity of the rotation shaft 42 of the motor 4.

  Since the cyclone 1 includes the above-described inflow pipe 201, it is possible to apply a force in the rotation direction around the central axis 50 (see FIG. 4) of the casing 5 to the air flowing into the casing 5. Further, in the cyclone 1, when the rotating body 3 rotates by the rotation of the rotating shaft 42 of the motor 4, the rotating body 3 and the plurality of blades 36 rotate in the same direction. The cyclone 1 can apply a force in the rotation direction about the rotation center axis 30 (see FIG. 4) to the air flowing into the flow path 19 (see FIGS. 4 and 5) by the rotation of the rotating body 3. It becomes possible. In the cyclone 1, when the rotating body 3 rotates, the velocity vector of the air flowing through the flow path 19 becomes a velocity component in a direction parallel to the rotation center axis 30 and a velocity component in a rotation direction around the rotation center axis 30. ,

  Regarding the separation characteristics of the cyclone 1, the separation efficiency tends to increase as the rotation speed of the rotating body 3 increases. Regarding the separation characteristics of the cyclone 1, the separation efficiency tends to increase as the particle size increases. In the cyclone 1, for example, the rotation speed of the rotating body 3 is preferably set so as to separate fine particles having a specified particle size or more. As the fine particles having a specified particle size, for example, particles having an aerodynamic particle size of 0.3 μm to 10 μm are assumed. By "aerodynamic particle size" is meant the diameter of a particle whose aerodynamic behavior is equivalent to a spherical particle with a specific gravity of 1.0. The aerodynamic particle size is the particle size determined from the sedimentation velocity of the particles. Examples of the solid that remains in the air without being separated by the cyclone 1 include, for example, fine particles having a smaller particle diameter than the particle that is assumed to be separated by the cyclone 1 (in other words, the particle that is separated by the cyclone 1 Fine particles having a mass smaller than the mass of the present fine particles).

  As described above, the casing 5 has the discharge hole 25 (see FIGS. 3 and 5) penetrating in the thickness direction of the cylinder 2 between the first end 21 and the second end 22 of the cylinder 2. ing.

  The discharge hole 25 has an elongated slit shape in a direction inclined with respect to a direction parallel to the rotation center axis 30. Here, the discharge hole 25 has an elongated slit shape in a direction between a direction parallel to the rotation center axis 30 and the rotation direction A1 of the rotating body 3. More specifically, the discharge hole 25 has a spiral shape in a spiral direction along the rotation direction A1 of the rotating body 3. The “helical shape in the spiral direction” means a shape formed by at least a part of the spiral. At least a part of the helix means that the rotation number of the helix may be less than one. In the cyclone 1 in the separation system 100 according to the first embodiment, the discharge hole 25 has a spiral rotation number of less than one.

  The above-described discharge hole 25 is formed from the first end 21 to the second end 22 of the cylindrical body 2. Thereby, in the cyclone 1, the inner peripheral surface 27 of the cylindrical body 2 is independent of the size of the solid in the air flowing into the cylindrical body 2 and the position in the direction along the central axis 20 (see FIG. 4) of the cylindrical body 2. (Refer to FIGS. 4 and 5) The solid passing through the vicinity can be discharged from the discharge hole 25.

  In the cyclone 1, the cylinder 2 has a plurality of discharge holes 25. That is, the casing 5 has a plurality of discharge holes 25. The plurality of discharge holes 25 are arranged in the circumferential direction of the cylinder 2. Here, the plurality of discharge holes 25 are arranged at equal intervals in the circumferential direction of the cylindrical body 2. The “equal intervals” here need not be exactly the same intervals, but may be intervals within a predetermined range (specific distance ± 20%). In the cyclone 1, the plurality of discharge holes 25 have the same shape.

  The above-mentioned first end cap 16 is arranged on the front cover 11 on the side opposite to the cylinder 2 side. The first end cap 16 is fixed to the front cover 11 by, for example, a plurality of screws. In addition, the above-described second end cap 17 is disposed so as to overlap with the rear cover 12 on the side opposite to the cylinder 2 side. The second end cap 17 is fixed to the rear cover 12 by, for example, a plurality of screws.

  As described above, the cyclone 1 includes the inflow pipe 201, the discharge pipe 202, and the outflow pipe 203.

  The inflow pipe 201 extends from the periphery of the first opening 53 in the casing 5 in one tangential direction (hereinafter, referred to as a first tangential direction) of the side surface 58 of the casing 5 and has an inflow port 204 (see FIG. 6) at a tip. In the cyclone 1, the inflow pipe 201 is integrated with the first end cap 16. The inflow pipe 201 is formed integrally with the first end cap 16, but is not limited thereto, and may be formed as a separate member from the first end cap 16 and coupled to the first end cap 16, for example. The material of the inflow pipe 201 is, for example, ABS resin, but is not limited to this.

  The discharge pipe 202 extends from the periphery of the second opening 54 in the casing 5 in one tangential direction (hereinafter, referred to as a second tangential direction) of the side surface 58 of the casing 5 and has a discharge port 205 (see FIG. 7) at the tip. In the cyclone 1, the discharge pipe 202 is integral with the second end cap 17. The discharge pipe 202 is formed integrally with the second end cap 17, but is not limited thereto, and may be formed as a separate member from the second end cap 17 and coupled to the second end cap 17, for example. The material of the inflow pipe 201 is, for example, ABS resin, but is not limited to this.

  The outflow pipe 203 is branched from the exhaust pipe 202 and has an outflow port 206 at the tip. In the cyclone 1, the outflow pipe 203 is integral with the discharge pipe 202. The outflow pipe 203 is formed integrally with the discharge pipe 202, but is not limited to this. For example, the outflow pipe 203 may be formed as a separate member from the discharge pipe 202 and coupled to the discharge pipe 202. The outflow pipe 203 has a smaller channel cross-sectional area than the discharge pipe 202. The length of the outflow pipe 203 is the same as the length of the outflow pipe 203 from the branch point of the outflow pipe 203, but is not limited thereto. The outflow pipe 203 is branched at a right angle from the discharge pipe 202. Here, the “right angle” is not limited to the case where the angle is exactly 90 °, and may be 90 ° ± 5 °. The outflow pipe 203 extends in a direction parallel to the central axis 50 of the casing 5 on a side opposite to the inflow pipe 201 as viewed from the discharge pipe 202.

  In the separation system 100, the solid contained in the air that has flowed into the casing 5 through the inflow port 204 of the inflow pipe 201 rotates around the rotation center axis 30 of the rotating body 3 (see FIG. 4) when spirally rotating inside the casing 5. ) Receives a centrifugal force in a direction toward the inner peripheral surface 27 of the cylindrical body 2. The solid subjected to the centrifugal force moves toward the inner peripheral surface 57 of the casing 5 and spirally rotates along the inner peripheral surface 57 near the inner peripheral surface 57 of the casing 5. Then, in the separation system 100, some of the solids (dust and the like) in the air are discharged from the discharge holes 25 (see FIG. 5) while passing through the flow path 19. In FIG. 1, the flow of air flowing into the inflow port 204 is schematically shown by a dotted arrow F1, and the flow of air exhausted from the exhaust hole 25 and exhausted through the exhaust hole 105 is schematically shown by a solid arrow F4. The particle P1 is schematically shown as a solid in the air.

  Further, since the separation system 100 includes the outflow pipe 203 branched from the discharge pipe 202, a part of the solid remaining in the air flowing into the discharge pipe 202 from the second opening 54 of the casing 5 is removed. A part of the air (purified air) that can be discharged from the discharge port 205 and from which solids have been separated (removed) from the air that has flowed into the discharge pipe 202 flows out of the outlet 206 of the outlet pipe 203. Thereby, in the separation system 100, the solid contained in the air that has flowed into the casing 5 through the inflow port 204 of the inflow pipe 201 can be more efficiently separated, and more purified air can flow out of the outflow pipe 203. It becomes possible. In FIG. 1, the flow of air discharged from the outlet 205 is schematically shown by a dotted arrow F2, and the flow of air discharged from the outlet 206 is schematically shown by a solid arrow F3. , The particle P1 is schematically shown.

  The cyclone 1 in the separation system 100 is disposed, for example, in an air purification system installed in a house or the like, disposed upstream of an air filter such as a HEPA filter (high efficiency particulate air filter) disposed upstream of an air conditioner. use. The “HEPA filter” is an air filter having a particle collection rate of 99.97% or more for particles having a particle diameter of 0.3 μm at a rated flow rate and having an initial pressure loss of 245 Pa or less. The air filter does not require 100% particle collection efficiency as an essential condition. Since the air purification system includes the cyclone 1, it is possible to suppress particles such as PM2.5 from reaching the air filter. Therefore, in the air purification system, it is possible to extend the life of the air filter and the like located downstream of the cyclone 1. For example, in an air purification system, it is possible to suppress an increase in pressure loss due to an increase in the total mass of fine particles and the like collected by the air filter. Thus, in the air purification system, the frequency of replacing the air filter can be reduced. The air purification system is not limited to a configuration in which the air filter and the air conditioning equipment are housed in different housings, and may include an air filter in the housing of the air conditioning equipment. In other words, the air conditioner may include an air filter in addition to the air blower.

  The separation system 100 further includes a cover 10 and an exhaust device 13. Further, the separation system 100 further includes a pressure sensor 14 and a control device 15.

  The cover 10 surrounds the cyclone 1 as shown in FIG. Here, the cover 10 is arranged so as to surround the cylindrical body 2 over the entire circumference. The cover 10 has an inlet-side opening 103 (see FIG. 3) and an outlet-side opening 104 (see FIG. 3) corresponding to the inlet 23 and the outlet 24 of the cyclone 1, respectively. The inlet-side opening 103 and the outlet-side opening 104 are larger than the inlet 23 and the outlet 24, respectively. The cover 10 is cylindrical and has an inlet opening 103 at a first end 101 and an outlet opening 104 at a second end 102. Here, the cover 10 has a cylindrical shape whose longitudinal direction is along the central axis 50 of the casing 5. The opening shape of each of the entrance-side opening 103 and the exit-side opening 104 is, for example, a circular shape. The cover 10 has an exhaust hole 105 between the first end 101 and the second end 102. The exhaust hole 105 penetrates in the thickness direction of the cover 10. The material of the cover 10 is, for example, an ABS resin.

  The cover 10 is connected to the front cover 11 and the rear cover 12. More specifically, in the separation system 100, the first end 101 of the cover 10 is fixed to the front cover 11 by a plurality of screws, and the second end 102 of the cover 10 is fixed to the rear cover 12 by a plurality of screws. ing. In the direction along the central axis 50 of the casing 5, the length of the cover 10 is shorter than the length of the casing 5. However, the cover 10 surrounds the casing 5 so as to cover the plurality of discharge holes 25 of the casing 5.

  The exhaust device 13 exhausts the inside of the cover 10 through the exhaust hole 105. Here, the exhaust device 13 includes a fan 131. The fan 131 is an exhaust fan. The exhaust fan is, for example, a sirocco fan, but is not limited to this. The separation system 100 includes an exhaust duct 108 extending from the periphery of the exhaust hole 105 on the side surface 107 of the cover 10. The separation system 100 includes an exhaust tube 109 connected to an exhaust duct 108. The exhaust device 13 exhausts the inside of the cover 10 through the exhaust hole 105, the exhaust duct 108, and the exhaust tube 109.

  The exhaust device 13 sucks the gas containing the solid existing in the cover 10 by the fan 131. In the separation system 100, the gas exhausted from the inside of the cover 10 and the solid contained in the gas pass through the fan 131. The fan 131 is preferably, for example, an exhaust fan capable of adjusting an exhaust amount. In this case, the fan 131 can adjust the exhaust amount by controlling the intake amount under the control of the control device 15.

  In the separation system 100, when the exhaust device 13 is not operated (that is, when the exhaust from the exhaust hole 105 is spontaneous exhaust), in the cyclone 1, the static pressure increases as the rotating body 3 moves away from the rotating body 3 and approaches the cylindrical body 2. The pressure in the cover 10 tends to be as high as the pressure near the inner peripheral surface 27 of the cylindrical body 2. For this reason, in the separation system 100, in the case of natural discharge, the amount discharged from the exhaust hole 105 is small, and the solid discharged from the discharge hole 25 of the cyclone 1 into the cover 10 tends to stay in the cover 10.

  On the other hand, the separation system 100 can suppress the solid discharged from the cyclone 1 from remaining in the cover 10 by operating the exhaust device 13 described above. Further, the separation system 100 includes the pressure sensor 14 and the control device 15 described above.

  The pressure sensor 14 measures the pressure (gauge pressure) inside the cover 10. The pressure sensor 14 is arranged inside the cover 10. More specifically, the pressure sensor 14 is disposed between the inner surface 106 of the cover 10 and the cyclone 1.

The control device 15 controls the exhaust device 13 according to the measurement value of the pressure sensor 14. For example, the control device 15 controls the exhaust amount of the exhaust device 13 according to the measurement value of the pressure sensor 14. More specifically, the control device 15 controls the exhaust device 13 so that the value measured by the pressure sensor 14 is within a predetermined range. The predetermined range is preferably determined, for example, such that the efficiency of separation of particles having a predetermined particle size (for example, 2.5 μm) in the separation system 100 in a simulation is not less than a desired value (for example, 60%). In the separation system 100, the outflow amount per unit time of the gas flowing from the inflow port 204 of the inflow pipe 201 and flowing out of the outflow port 206 of the outflow pipe 203 becomes a predetermined amount (for example, 250 m ³ / h). The amount of exhaust per unit time by the exhaust device 13 is smaller than the amount of inflow per unit time flowing into the inflow port 204. In order to maintain the outflow amount from the outlet 206 at a predetermined amount even when the amount of exhaust gas in the exhaust device 13 is changed, it is necessary to change the amount of inflow to the inflow port 204 in accordance with the amount of exhaust gas. It is preferable to increase the inflow. When the amount of inflow to the inflow port 204 is determined, it is preferable to set the exhaust amount according to the difference between the inflow amount and the outflow amount. The predetermined range is, for example, a range including the atmospheric pressure. The upper limit value (first threshold value) of the predetermined range is, for example, a value corresponding to a predetermined positive pressure. The lower limit value (second threshold value) of the predetermined range is, for example, a value corresponding to a predetermined negative pressure.

  The execution subject of the control device 15 in the present disclosure includes a computer system. The computer system mainly has a processor and a memory as hardware. The function as the control device 15 in the present disclosure is realized by the processor executing the program recorded in the memory of the computer system. The program may be pre-recorded in the memory of the computer system, may be provided through an electric communication line, or may be recorded in a non-transitory recording medium such as a memory card, an optical disk, or a hard disk drive readable by the computer system. May be provided. A processor of a computer system is composed of one or more electronic circuits including a semiconductor integrated circuit (IC) or a large-scale integrated circuit (LSI). An integrated circuit such as an IC or an LSI referred to here differs depending on the degree of integration, and includes an integrated circuit called a system LSI, a VLSI (Very Large Scale Integration), or an ULSI (Ultra Large Scale Integration). Furthermore, an FPGA (Field-Programmable Gate Array), which is programmed after the manufacture of the LSI, or a logic device capable of reconfiguring the connection relation inside the LSI or reconfiguring the circuit section inside the LSI, is also adopted as a processor. Can be. The plurality of electronic circuits may be integrated on one chip, or may be provided separately on a plurality of chips. The plurality of chips may be integrated in one device, or may be provided separately in a plurality of devices. The computer system includes a microcontroller having one or more processors and one or more memories. Therefore, the microcontroller is also composed of one or more electronic circuits including a semiconductor integrated circuit or a large-scale integrated circuit.

  The separation system 100 according to the first embodiment described above includes the casing 5, the rotating body 3, the blades 36, the motor 4, the inflow pipe 201, the discharge pipe 202, and the outflow pipe 203. The casing 5 has a tubular shape in which the first end 51 and the second end 52 are closed. The casing 5 includes a first opening 53 formed on the side of the first end 51 on the side wall 56, a second opening 54 formed on the side of the second end 52 on the side wall 56, and a second opening 53 formed on the side wall 56. And the discharge hole 25 formed between the opening 54. The rotating body 3 is arranged inside the casing 5 so that the rotation center axis 30 is aligned with the center axis 50 of the casing 5. The blade 36 is connected to the rotating body 3 and protrudes from the rotating body 3 toward the inner peripheral surface 57 of the casing 5. The motor 4 rotates the rotating body 3 around the rotation center axis 30. The inflow pipe 201 extends from the periphery of the first opening 53 in the casing 5 in the first tangential direction of the side surface 58 of the casing 5 and has an inflow port 204 at a tip. The discharge pipe 202 extends from the peripheral edge of the second opening 54 in the casing 5 in the second tangential direction of the side surface 58 of the casing 5 and has a discharge port 205 at the tip. The outflow pipe 203 is branched from the exhaust pipe 202 and has an outflow port 206 at the tip.

  With the above configuration, the separation system 100 according to the first embodiment can improve the separation performance.

  Further, in the separation system 100 according to the first embodiment, the outflow pipe 203 is branched at a right angle from the discharge pipe 202. Thereby, in the separation system 100 according to the first embodiment, the separation performance can be further improved.

  In the separation system 100 according to the first embodiment, the outflow pipe 203 has a smaller flow path cross-sectional area than the discharge pipe 202. Thereby, in the separation system 100 according to the first embodiment, the flow path resistance of the outflow pipe 203 can be made larger than the flow path resistance of the discharge pipe 202, and the separation performance can be further improved.

  In addition, in the separation system 100 according to the first embodiment, since the shape of the cover 10 is cylindrical, the generation of stagnation of gas containing solids in the cover 10 is suppressed as compared with the case where a rectangular cylindrical cover is used. It is possible to do. Thereby, in the separation system 100 according to the first embodiment, it is difficult for the solid to stay in the cover 10, and the separation efficiency can be improved.

  In the separation system 100 according to the first embodiment, the control device 15 controls the exhaust device 13 according to the measurement value of the pressure sensor 14. Thereby, in the separation system 100, it is possible to suppress the pressure in the cover 10 from rising, and to suction the gas and the solid discharged into the cover 10 from the discharge holes 25 of the cyclone 1 by the exhaust device 13. Can be.

  In the separation system 100, the exhaust duct 108 extends in one tangential direction from the side surface 107 of the cover 10 as shown in FIG. Here, the one tangent direction is a direction along the rotation direction A1 of the rotating body 3 (see FIG. 5). Accordingly, in the separation system 100, solids contained in the gas discharged into the cover 10 from the discharge holes 25 of the cyclone 1 are easily discharged from the exhaust duct 108. Therefore, the separation system 100 can improve the separation performance.

(Embodiment 2)
The separation system 100a according to the second embodiment differs from the separation system 100 according to the first embodiment in further including a branch discharge pipe 207 branched from the discharge pipe 202, as shown in FIG. The basic configuration of the separation system 100a according to the second embodiment is the same as that of the separation system 100 according to the first embodiment.

  The branch discharge pipe 207 is branched from the discharge pipe 202 at a position closer to the casing 5 than the outflow pipe 203 is. The branch discharge pipe 207 has a discharge port 208 at a tip opposite to the discharge pipe 202. Therefore, the separation system 100 has a discharge port 205 at the tip of the discharge pipe 202 and a discharge port 208 at the tip of the branch discharge pipe 207. The branch discharge pipe 207 is branched from the discharge pipe 202 at right angles. Here, the “right angle” is not limited to the case where the angle is exactly 90 °, and may be 90 ° ± 5 °. The branch discharge pipe 207 has a larger flow path cross-sectional area than the outflow pipe 203, but is not limited thereto. Further, the cross-sectional area of the flow path of the branch discharge pipe 207 is the same as the cross-sectional area of the flow path of the discharge pipe 202, but is not limited thereto. The length of the branch discharge pipe 207 is the same as the length of the outflow pipe 203, but is not limited thereto.

  In the separation system 100a according to the second embodiment, by providing the branch discharge pipe 207, the separation performance can be further improved as compared with the separation system 100 according to the first embodiment.

(Embodiment 3)
In the separation system 100b according to the third embodiment, as illustrated in FIGS. 9 and 10, the shape of the discharge pipe 202b is different from the shape of the discharge pipe 202 in the separation system 100 according to the first embodiment. The basic configuration of the separation system 100b according to the third embodiment is the same as that of the separation system 100 according to the first embodiment.

  The discharge pipe 202b extends in the second tangential direction and has an internal space connected to the second opening 54 (refer to FIG. 7), and is orthogonal to the second tangential direction from the tip of the first pipe 2021. And a second pipe portion 2022 having a discharge port 205 at the tip. The outflow pipe 203 is branched from the second pipe 2022 in a direction opposite to the direction in which the first pipe 2021 extends from the side wall 56. The outflow pipe 203 is branched at a right angle from the discharge pipe 202b. More specifically, the outflow pipe 203 is branched at a right angle from the second pipe 2022. The outflow pipe 203 has a smaller channel cross-sectional area than the discharge pipe 202. More specifically, the outflow pipe 203 has a smaller flow path cross-sectional area than the second pipe 2022.

  In the separation system 100b according to the third embodiment, the separation performance can be further improved as compared with the separation system 100 according to the first embodiment.

  Embodiments 1 to 3 are only one of various embodiments of the present disclosure. Various changes can be made to the first to third embodiments according to the design and the like as long as the object of the present disclosure can be achieved.

(Modification)
For example, in the casing 5, not only the entire discharge hole 25 is formed in a slit shape elongated in a direction inclined with respect to a direction parallel to the rotation center axis 30 of the rotating body 3, The portion may be a slit that is elongated in a direction inclined with respect to a direction parallel to the rotation center axis 30.

  Further, the discharge hole 25 is not limited to the case where the discharge hole 25 is formed from the first end 21 to the second end 22 of the cylindrical body 2, and may be, for example, in a direction along the central axis 20 of the cylindrical body 2. It may be formed from the central portion to the second end 22, or may be formed from the first end 21 to the central portion in a direction along the central axis 20 of the cylindrical body 2.

  Further, the casing 5 has the plurality of discharge holes 25, but the number of the discharge holes 25 is not limited to plural, and may be one, for example.

  The plurality of discharge holes 25 are not limited to being arranged at equal intervals in the circumferential direction of the casing 5, but may be at irregular intervals.

  The material of the casing 5 is not limited to a synthetic resin such as ABS, but may be a metal or the like. The material of the rotating body 3 and the plurality of blades 36 is not limited to a synthetic resin such as a polycarbonate resin, but may be a metal or the like. Further, the material of the rotating body 3 and the material of the plurality of blades 36 may be different from each other.

  Each of the plurality of blades 36 may be formed as a separate member from the rotating body 3 and fixed to the rotating body 3 to be connected to the rotating body 3.

  Further, each of the plurality of blades 36 may be spirally formed around the rotation center axis 30 of the rotating body 3. Here, the “spiral shape” is not limited to a spiral shape having a rotation speed of 1 or more, but also includes a part of the spiral shape having a rotation speed of 1.

  The rotating body 3 is not limited to the configuration including the two rotating members 3a and 3b arranged in the direction along the center axis 20 of the cylindrical body 2, but includes, for example, only one of the two rotating members 3a and 3b. May be. The rotating body 3 may include at least one rotating member (a rotating member having the same shape as the rotating member 3b) between the two rotating members 3a and 3b. In this case, it is preferable that a blade member forming a part of each of the plurality of blades 36 is also connected to the rotation member between the two rotation members 3a and 3b.

  The number of the blades 36 is not limited to a plurality, and may be one, for example.

  Further, the number of exhaust holes 105 in the cover 10 is not limited to one, and may be plural. Further, the separation systems 100, 100a, and 100b may include a plurality of exhaust ducts 108 corresponding to the plurality of exhaust holes 105 one-to-one. Thereby, in the separation systems 100, 100a, and 100b, the separation performance can be improved as compared with the case where only one combination of the exhaust hole 105 and the exhaust duct 108 is provided.

  Further, the separation systems 100, 100a, 100b may further include a collector into which the solid discharged through the exhaust device 13 enters.

  Further, the exhaust device 13 is not limited to a fan, and may be configured by, for example, an exhaust pump and a valve.

  Further, the shape of the cover 10 is not limited to a cylindrical shape. In this case, the opening shape of the cover 10 is a regular n-sided shape when an integer n of 5 or more is used, for example. In this case, the exhaust duct 108 preferably extends along one of the n side surfaces of the cover 10.

(Summary)
The following aspects are disclosed from the first to third embodiments and the modified examples described above.

  The separation system (100; 100a; 100b) according to the first embodiment includes a casing (5), a rotating body (3), a blade (36), a motor (4), an inlet pipe (201), and a discharge. A tube (202; 202b) and an outflow tube (203) are provided. The casing (5) has a cylindrical shape with a first end (51) and a second end (52) closed. The casing (5) has a first opening (53) formed on the side of the first end (51) on the side wall (56) and a second opening (53) formed on the side of the second end (52) on the side wall (56). 54), and a discharge hole (25) formed in the side wall (56) between the first opening (53) and the second opening (54). The rotating body (3) is arranged inside the casing (5) such that the rotation center axis (30) is aligned with the center axis (50) of the casing (5). The blade (36) is connected to the rotating body (3) and protrudes from the rotating body (3) toward the inner peripheral surface (57) of the casing (5). The motor (4) rotates the rotating body (3) around the rotation center axis (30). The inflow pipe (201) extends from the periphery of the first opening (53) in the casing (5) in the first tangential direction of the side surface (58) of the casing (5), and has an inflow port (204) at the tip. The discharge pipe (202; 202b) extends from the periphery of the second opening (54) in the casing (5) in the second tangential direction of the side surface (58) of the casing (5), and has a discharge port (205) at the tip. . The outflow pipe (203) is branched from the exhaust pipe (202) and has an outflow port (206) at the tip.

  The separation system (100; 100a; 100b) according to the first aspect can improve the separation performance.

  The separation system (100a) according to the second aspect, in the first aspect, includes a branch discharge pipe (207) branched from the discharge pipe (202) at a position closer to the casing (5) than the outlet pipe (203). Is further provided.

  In the separation system (100a) according to the second aspect, the separation performance can be further improved.

  In the separation system (100b) according to the third aspect, in the first aspect, the discharge pipe (202b) extends in the second tangential direction and has an internal space connected to the second opening (54). (2021) and a second tube (2022) extending from the tip of the first tube (2021) in a direction orthogonal to the second tangential direction and having a discharge port (205) at the tip. The outflow pipe (203) is branched from the second pipe (2022) in a direction opposite to the direction in which the first pipe (2021) extends from the side wall (56).

  In the separation system (100b) according to the third aspect, the separation performance can be further improved.

  In the separation system (100; 100a; 100b) according to the fourth aspect, in any one of the first to third aspects, the outlet pipe (203) is branched at a right angle from the discharge pipe (202; 202b). I have.

  In the separation system (100; 100a; 100b) according to the fourth aspect, the separation performance can be further improved.

  In the separation system (100; 100a; 100b) according to the fifth aspect, in any one of the first to fourth aspects, the outflow pipe (203) has a channel cross-sectional area larger than that of the discharge pipe (202; 202b). Is small.

  In the separation system (100; 100a; 100b) according to the fifth aspect, the flow path resistance of the outflow pipe (203) can be larger than the flow path resistance of the discharge pipe (202; 202b), and the separation performance can be further improved. Becomes possible.

  The separation system (100; 100a; 100b) according to the sixth aspect, in any one of the first to fifth aspects, further comprises a cover (10) and an exhaust device (13). The cover (10) has an exhaust hole (105) and surrounds the casing (5) so as to cover the exhaust hole (25) of the casing (5). The exhaust device (13) exhausts the inside of the cover (10) through the exhaust hole (105).

  In the separation system (100; 100a; 100b) according to the sixth aspect, the separation performance can be improved.

  In the separation system (100; 100a; 100b) according to the seventh aspect, in the sixth aspect, the cover (10) is cylindrical.

  In the separation system (100; 100a; 100b) according to the seventh aspect, the separation performance can be improved as compared with the case where the cover (10) is not cylindrical.

  A separation system (100; 100a; 100b) according to an eighth aspect has a plurality of blades (36) according to any one of the first to seventh aspects. The plurality of blades (36) are spaced apart in the circumferential direction of the rotating body (3).

  In the separation system (100; 100a; 100b) according to the eighth aspect, it is possible to further improve the separation performance.

Reference Signs List 25 discharge hole 3 rotating body 30 rotation center axis 31 first end 32 second end 36 blade 4 motor 5 casing 50 center axis 51 first end 52 second end 53 first opening 54 second opening 56 side wall 57 inner peripheral surface 58 Side surface 10, 10a, 10b Cover 105 Exhaust hole 13 Exhaust device 100, 100a, 100b Separation system 201 Inflow pipe 202, 202b Drain pipe 2021 First pipe section 2022 Second pipe section 203 Outflow pipe 204 Inlet 205 Outlet 206 Outlet 207 Branch discharge pipe 208 Discharge port

Claims (8)

A first opening formed on the side of the first end on the side wall, a second opening formed on the second end side of the side wall, A casing having a discharge hole formed in the side wall between the first opening and the second opening;
A rotating body disposed inside the casing such that a rotation center axis is aligned with a center axis of the casing;
A blade connected to the rotating body and protruding from the rotating body toward an inner peripheral surface of the casing;
A motor that rotates the rotating body around the rotation center axis;
An inflow pipe extending from a periphery of the first opening in the casing in a first tangential direction on a side surface of the casing and having an inflow port at a tip end;
A discharge pipe extending from a peripheral edge of the second opening in the casing in a second tangential direction of a side surface of the casing and having a discharge port at a tip end;
An outlet pipe branched from the exhaust pipe and having an outlet at the tip.
Separation system. Further comprising a branch discharge pipe branched from the discharge pipe at a position closer to the casing than the outflow pipe,
The separation system according to claim 1. A first pipe portion extending in the second tangent direction and having an internal space connected to the second opening; and a discharge pipe extending in a direction perpendicular to the second tangential direction from a tip of the first pipe portion. And a second pipe portion having the discharge port at the tip thereof,
The outflow pipe is branched from the second pipe in a direction opposite to a direction in which the first pipe extends from the side wall.
The separation system according to claim 1. The outlet pipe is branched at a right angle from the discharge pipe;
The separation system according to claim 1. The outlet pipe has a smaller channel cross-sectional area than the discharge pipe,
The separation system according to claim 1. A cover that has an exhaust hole and surrounds the casing so as to cover the exhaust hole of the casing;
An exhaust device that exhausts the inside of the cover through the exhaust hole.
The separation system according to claim 1. The cover is cylindrical;
The separation system according to claim 6. Having a plurality of the blades,
The plurality of blades are spaced apart in a circumferential direction of the rotating body,
The separation system according to claim 1.

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