JP2018138296A - Separation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a separation device capable of improving separation performance to separate a solid body contained in gas from the gas.SOLUTION: A separation device 1 includes an outer cylindrical body 2, a rotation body 3, a plurality of blades 36, and a motor 4. The plurality of blades 36 are disposed separated from each other in an outer peripheral direction of the rotation body 3 between the rotation body 3 and the outer cylindrical body 2, and are connected to the rotation body 3. The motor 4 rotates the rotation body 3 around the rotation central axis 30 of the rotation body 3. The outer cylindrical body 2 is of a cylindrical shape, and includes a discharge hole 25 that communicates the inside and the outside of the outer cylindrical body 2 between a first end 21 and a second end 22. The plurality of blades 36 are disposed parallel to each other in a direction along the rotation central axis 30 of the rotation body 3. The separation device 1 further includes an air current control rib 29 that projects from the inner peripheral surface 27 of the outer cylindrical body 2 inward in the radial direction of the outer cylindrical body 2 between the first end 21 and the second end 22 of the outer cylindrical body 2.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a separation device, and more particularly, to a separation device that separates a solid contained in a gas from a gas.

  Conventionally, as this type of separation device, for example, a separator including a rotor (rotary body), a plurality of flow paths, a blowing unit, a driving device (motor), a discharge unit, and a collection unit. Known (Patent Document 1).

  Each of the plurality of flow paths has a gas inlet and an outlet and is around the rotation center axis of the rotor. A ventilation part flows gas into a plurality of channels. The drive device rotates the plurality of flow paths around the rotation center axis by rotating the rotor. The discharge unit flows solids (for example, fine particles, dust, and the like) contained in the air flow (for example, air) generated in each of the plurality of flow paths from a position closer to the inlet of each of the plurality of flow paths. Discharge in a direction away from the rotation center axis at a position close to the outlet.

  Further, in the separator according to one modification described in Patent Document 1, the discharge portion is configured by a discharge port (discharge hole) penetrating along the radial direction of the frame body on the downstream side of the frame body (outer cylinder body). Has been. Here, in a separator according to a modified example, each of the plurality of partition plate portions (blades) connected to the shaft body (rotary body) inside the frame body has a direction along the rotation center axis as a longitudinal direction. It is formed in an elongated rectangular shape with the direction perpendicular to the rotation center axis as the short direction. The separator according to one modified example has an advantage that the pressure loss can be reduced as compared with the configuration in which each of the plurality of partition plate portions has a spiral shape.

International Publication No. 2016/092847

  In the field of the separation apparatus, it is desired to further improve the separation performance for separating the solid contained in the gas from the gas with less pressure loss.

  An object of the present invention is to provide a separation apparatus capable of improving the separation performance for separating a solid contained in a gas from the gas.

  The separation device according to one aspect of the present invention includes an outer cylinder, a rotating body, a plurality of blades, and a motor. The outer cylinder has a cylindrical shape and has a gas inlet at a first end and a gas outlet at a second end. The rotating body is disposed inside the outer cylindrical body so that the rotation center axis of the rotating body is aligned with the central axis of the outer cylindrical body. The plurality of blades are disposed apart from each other in the outer circumferential direction of the rotating body between the rotating body and the outer cylinder, and are connected to the rotating body. The motor rotates the rotating body around the rotation center axis. The outer cylinder has a discharge hole for communicating the inside and outside of the outer cylinder between the first end and the second end. Each of the plurality of blades is disposed in parallel to a direction along the rotation center axis of the rotating body. The separation device further includes an airflow control rib protruding inward in the radial direction of the outer cylinder from the inner peripheral surface of the outer cylinder between the first end and the second end of the outer cylinder. .

  The separation device of the present invention can improve the separation performance for separating the solid contained in the gas from the gas.

FIG. 1A is a perspective view of a main part of a separation apparatus according to an embodiment of the present invention. FIG. 1B is a perspective view of a main part of the separation device as seen from another direction. FIG. 2 is a cross-sectional perspective view of an essential part of the separation device. FIG. 3A is a front view of the separation device. FIG. 3B is a left side view of the separation device. FIG. 4 is a sectional view taken along line XX of FIG. FIG. 5 is a cross-sectional view taken along line YY of FIG. FIG. 6 is an exploded perspective view of the above separation apparatus. FIG. 7A is an exploded perspective view showing the outer cylinder body and the collector in the separation device same as the above, as seen from above. FIG. 7B is an exploded perspective view showing the outer cylinder body and the collector in the separation device same as the above and seen from the lower side.

(Embodiment)
Below, the separation apparatus 1 of this embodiment is demonstrated based on FIG.

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

  As illustrated in FIGS. 1A, 1B, 2, and 4 to 6, the separation device 1 includes an outer cylindrical body 2, a rotating body 3, a plurality of blades 36, and a motor 4. The outer cylinder 2 has a gas inlet 23 at the first end 21 and a gas outlet 24 at the second end 22. The rotating body 3 is disposed inside the outer cylindrical body 2. The plurality of blades 36 are connected to the rotating body 3. In the separation device 1, as shown in FIGS. 2 and 4, a flow path 5 from the inlet 23 toward the outlet 24 is formed between the outer cylinder 2 and the rotating body 3. The motor 4 rotates the rotating body 3. Here, the separating apparatus 1 includes a shaft 7 connected to both the rotating body 3 and the rotating shaft 42 of the motor 4. Further, the separating apparatus 1 includes a shaft coupling (shaft coupling) 8 that connects the shaft 7 and the rotating shaft 42 of the motor 4 (see FIGS. 2, 4 and 6).

  The separation device 1 can flow the air flowing into the flow path 5 from the upstream side to the downstream side of the flow path 5 while rotating in a spiral around the rotating body 3. Here, “upstream side” 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 outer cylindrical body 2 of the separation device 1 has a discharge hole 25 (FIGS. 2, 5, 6, and 6) for communicating the inside and outside of the outer cylindrical body 2 in order to discharge the solid contained in the air to the outside of the outer cylindrical body 2. 7A and 7B). The separation device 1 further includes a collector 6 into which solids discharged from the inner side of the outer cylindrical body 2 through the discharge hole 25 enter.

  Examples of the solid in the air include fine particles and dust. Examples of the fine particles include particulate substances. As the particulate matter, there are primary generated particles that are directly released into the air as fine particles, secondary generated particles that are released into the air as a gas and are generated as fine particles in the air, and the like. Examples of the primary generated particles include soil particles (such as yellow sand), dust, vegetable particles (such as pollen), animal particles (such as mold spores), and soot. Examples of the size classification of the particulate matter include PM2.5 (microparticulate matter), PM10, SPM (floating particulate matter) and the like. PM2.5 is a fine particle that passes through a sizing device having a particle diameter of 2.5 μm and a collection efficiency of 50%. PM10 is a fine particle that passes through a sizing device having a particle diameter of 10 μm and a collection efficiency of 50%. SPM is fine particles that pass through a sizing device 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 device 1 will be described in more detail below.

  As described above, the separation device 1 includes the outer cylinder 2, the rotating body 3, the plurality of blades 36, the motor 4, the shaft 7, the shaft joint 8, and the collector 6.

  The outer cylinder 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 outer cylinder 2 is, for example, ABS resin.

  As shown in FIGS. 4 and 5, the rotating body 3 is disposed coaxially with the outer cylinder 2 inside the outer cylinder 2. The phrase “arranged coaxially with the outer cylinder 2” means that the rotating body 3 uses the rotation center axis 30 (see FIG. 4) of the rotating body 3 as the center axis 20 of the outer cylinder 2 (see FIGS. 4 and 7A). ). In the rotating body 3, the outer peripheral line in a cross section (for example, see FIG. 5) orthogonal to the rotation center axis 30 is circular. The material of the rotating body 3 is polycarbonate resin, for example.

  The length of the rotating body 3 is shorter than the length of the outer cylindrical body 2 in the direction along the rotation center axis 30 of the rotating body 3. As illustrated in FIG. 4, the rotator 3 includes a first end 31 on the inlet 23 side and a second end 32 on the outlet 24 side. The first end 31 of the rotating body 3 is disposed near the inlet 23 between the inlet 23 and the outlet 24 of the outer cylinder 2 in the direction along the central axis 20 of the outer cylinder 2. Yes. Further, the second end 32 of the rotating body 3 is disposed near the outlet 24 between the inlet 23 and the outlet 24 of the outer cylinder 2 in the direction along the central axis 20 of the outer cylinder 2. Has been.

  A plurality (24 in this case) of blades 36 connected to the rotating body 3 are arranged between the outer cylinder 2 and the rotating body 3. The material of each of the plurality of blades 36 is, for example, polycarbonate resin.

  As shown in FIGS. 4 and 5, each of the plurality of blades 36 is disposed such that a gap is formed between the blades 36 and the inner peripheral surface 27 of the outer cylindrical body 2. In other words, the separation device 1 has a gap between each of the plurality of blades 36 and the inner peripheral surface 27 of the outer cylindrical body 2. That is, the protruding length from the outer peripheral surface 37 of the rotating body 3 in each of the plurality of blades 36 is the distance between the outer peripheral surface 37 of the rotating body 3 and the inner peripheral surface 27 of the outer cylinder 2 in the radial direction of the rotating body 3. Shorter than. Each of the plurality of blades 36 is arranged in parallel to the rotation center axis 30 of the rotating body 3 in a space (flow path 5) between the outer peripheral surface 37 of the rotating body 3 and the inner peripheral surface 27 of the outer cylinder 2. Yes. Each of the plurality of blades 36 has a flat plate shape. Each of the plurality of blades 36 is disposed so as to intersect (substantially orthogonal in the present embodiment) in a direction along the circumferential direction of the rotating body 3. As shown in FIG. 5, the plurality of blades 36 are spaced apart at substantially equal intervals in the circumferential direction of the rotating body 3.

  As shown in FIGS. 2, 4, and 6, the above-described rotating body 3 includes two rotating members 3 a and 3 b that are arranged in a direction along the central axis 20 (see FIGS. 4 and 7A) of the outer cylindrical body 2. 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 the first ends 31a, 31b on the inlet 23 side, and openings 34a, at the second ends 32a, 32b on the outlet 24 side. 34b. Hereinafter, for convenience of explanation, the rotating member 3a located at a position (relatively upstream) of the two rotating members 3a and 3b (relatively upstream) is referred to as an upstream rotating member 3a and is positioned close to the outlet 24 ( The rotating member 3b that is relatively downstream) may also be referred to as a downstream rotating member 3b. In the bottomed cylindrical upstream rotating member 3a, the bottom wall 33a is formed to swell toward the inlet 23 side. Thereby, in the separation apparatus 1, it becomes possible to reduce the pressure loss of the gas flowing in from the inflow port 23 of the outer cylindrical body 2. Further, a reinforcing wall 38 integral with the upstream rotating member 3a is provided inside the upstream rotating member 3a. Thereby, in the separation apparatus 1, it becomes possible to further improve the mechanical strength of the upstream side rotation member 3a. In addition, 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 inside the bottomed cylindrical downstream rotating member 3b. In the direction along the central axis 20 of the outer cylindrical body 2, the length of the rib 39 is shorter than the length of the downstream side rotation member 3b.

  In the separation device 1, each of the plurality of blades 36 includes a blade piece 36 a protruding from the outer peripheral surface of the upstream rotating member 3 a and a blade piece 36 b protruding from the outer peripheral surface of the downstream rotating member 3 b. (See FIG. 4). In other words, in the separating apparatus 1, a plurality (24 sheets) of blade pieces 36a connected to the upstream rotating member 3a and a plurality (24 sheets) of blade pieces 36b connected to the downstream rotating member 3b are paired. A plurality of (24) blades 36 are configured. Hereinafter, for convenience of explanation, 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 36 a are arranged at substantially equal intervals in the circumferential direction of the rotating body 3. Further, the plurality of downstream blade pieces 36 b are arranged at substantially equal intervals in the circumferential direction of the rotating body 3. Here, the upstream blade piece 36 a and the downstream blade piece 36 b corresponding to each other one by one are aligned on a straight line in a direction parallel to the central axis 20 of the outer cylinder 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 device 1, 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 separation device 1, the rotating shaft 42 and the shaft 7 are arranged so as to be aligned on a straight line.

  The motor 4 rotates the rotating body 3 around the rotation center axis 30 of the rotating body 3. The number of rotations of the rotating body 3 is, for example, 1500 rpm to 3000 rpm. The motor 4 is, for example, a direct current motor. The motor 4 is driven by, for example, an external drive circuit.

  As shown in FIGS. 2 and 4, the motor 4 includes a motor main body 41 and the above-described rotating shaft 42 partially protruding from the motor main body 41. The rotating shaft 42 is cylindrical. The motor 4 is disposed inside the rotating body 3. In more detail, the motor 4 is arrange | positioned inside the downstream rotation member 3b. Here, the separating apparatus 1 includes a motor housing 9 (see FIGS. 2, 4 and 6) that houses the motor 4 and the shaft coupling 8. The motor housing 9 is accommodated in the downstream side rotation member 3b. The motor housing 9 is fixed to a later-described rear cover 12 with a plurality of screws.

  The material of the motor housing 9 is, for example, aluminum. As shown in FIG. 4, the motor housing 9 includes a housing main body 90 and a flange portion 95. The housing main body 90 has a bottom wall 93 at a first end 91 on the inlet 23 side and an opening 94 at 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 portion 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 portion 98. The flange portion 95 protrudes outward in the radial direction of the housing main body 90 from the second end 92 of the housing main body 90. The flange portion 95 is provided to fix the motor housing 9 to the rear cover 12 with a plurality of screws.

  The shaft 7 (see FIGS. 4, 5, and 6) has a round bar shape, and includes 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 disposed 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 outer cylinder 2. A part of the shaft 7 is disposed in the rotating body 3. More specifically, in the separation device 1, the first end 71 of the shaft 7 is disposed outside the first end 21 of the outer cylinder 2 in the direction along the central axis 20 of the outer cylinder 2, and the shaft 7 The 2nd end 72 of this is arrange | positioned inside the downstream rotation member 3b. Here, as shown in FIG. 4, the shaft 7 includes a hole 35a formed at the center of the bottom wall 33a of the upstream side rotation member 3a and a hole 35b formed at the center of the bottom wall 33b of the downstream side rotation member 3b. And pass. 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 on a one-to-one basis. Each of the two bolts 78 passes through a hole penetrating in the radial direction in the shaft 7. Thereby, the rotating body 3 can rotate together with the shaft 7.

  The separation device 1 includes a first bearing 75 and a second bearing 76 (see FIGS. 4 and 6) for rotatably supporting the shaft 7. Thereby, in the separating apparatus 1, the rotating body 3 can be rotated more stably by the motor 4. In the separation device 1, the first bearing 75 rotatably supports the first end 71 of the shaft 7. In the separation device 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 portion 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 disposed inside the downstream side rotation member 3b.

  As shown in FIGS. 1A to 6, the separation device 1 further includes a front cover (first cover) 11 and a rear cover (second cover) 12. In addition, the separation device 1 further includes a bottom cover (third cover) 13 as shown in FIGS. 3A, 4, 5, and 6.

  The front cover 11 is detachably attached to a first flange 211 (see FIGS. 1B and 2) projecting outward from the first end 21 of the outer cylinder 2 by a plurality of (for example, four) screws. . The rear cover 12 is detachably attached to a second flange 221 (see FIGS. 1A and 2) projecting outward from the second end 22 of the outer cylindrical body 2 by a plurality of (for example, four) screws. The bottom cover 13 is detachably attached to each of the front cover 11 and the rear cover 12 with a plurality of (for example, two) screws.

  When viewed from one direction along the central axis 20 of the outer cylindrical body 2, the outer peripheral shape of the front cover 11 is a square shape. As shown in FIGS. 1A and 2, 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. 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 outer 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 disposed 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 mounting portion 112. The first bearing 75 is a bush bearing and is attached to the bearing attachment portion 112 by being press-fitted into the bearing attachment portion 112. The material of the front cover 11 is, for example, aluminum.

  When viewed from one direction along the central axis 20 of the outer cylindrical body 2, the outer peripheral shape of the rear cover 12 is a square shape. As shown in FIGS. 1B and 2, 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 outer cylindrical body 2. The second frame portion 121 is disposed so as to overlap the second flange 221. The second frame portion 121 is fixed to the second flange 221 with a plurality of screws. The housing attachment portion 122 has an annular shape and is disposed inside the second frame portion 121. A flange portion 95 of the motor housing 9 is disposed on the housing attachment portion 122 in an overlapping manner. The flange portion 95 of the motor housing 9 is fixed to the housing attachment portion 122 by a plurality of screws. The four second beam portions 123 connect the second frame portion 121 and the housing attachment portion 122. The four second beam portions 123 are spaced apart at substantially equal intervals in the circumferential direction of the housing mounting portion 122. The material of the rear cover 12 is, for example, aluminum.

  The bottom cover 13 (see FIGS. 3A, 4, 5 and 6) is coupled to the front cover 11 and the rear cover 12. The bottom cover 13 is disposed below the outer cylinder 2. The bottom cover 13 is a rectangular plate whose longitudinal direction is the direction along the central axis 20 of the outer cylindrical body 2, and one end in the longitudinal direction is fixed to the front cover 11 by a plurality of screws, and the other end in the longitudinal direction. Is fixed to the rear cover 12 by a plurality of screws. The length of the bottom cover 13 in the longitudinal direction is longer than the length of the outer cylinder 2, and the length of the bottom cover 13 in the short direction is longer than the outer diameter of the outer cylinder 2. The material of the bottom cover 13 is, for example, aluminum.

  In the separating apparatus 1, the casing 100 including the front cover 11, the rear cover 12, and the bottom cover 13 surrounds the outer cylinder 2 from three sides as shown in FIG. 3A. In addition to the front cover 11, the rear cover 12, and the bottom cover 13, the housing 100 is disposed on both sides of the outer cylinder 2 in the radial direction of the top cover and the outer cylinder 2. A pair of side covers may be provided.

  As shown in FIGS. 3A, 4 and 6, the separation device 1 further includes a front panel 16, a rear panel 17, and a ventilation panel 18.

  The outer peripheral shape of the front panel 16 is a square shape. The front panel 16 is formed with a vent hole 161 (see FIGS. 1, 4 and 6) penetrating in the thickness direction. The front panel 16 is disposed so as to overlap the opposite side of the front cover 11 from the outer cylinder 2 side. The front panel 16 is fixed to the front cover 11 with a plurality of screws. The opening shape of the vent hole 161 is circular. The inner diameter of the vent hole 161 is smaller than the inner diameter of the outer cylindrical body 2 and the outer diameter of the rotating body 3 and larger than the outer diameter of the bearing mounting portion 112 of the front cover 11. The material of the front panel 16 is, for example, aluminum.

  The outer peripheral shape of the rear panel 17 is a square shape. The rear panel 17 has a ventilation hole 171 (see FIGS. 3B, 4 and 6) penetrating in the thickness direction. The rear panel 17 is disposed so as to overlap the opposite side of the rear cover 12 from the outer cylinder 2 side. The rear panel 17 is fixed to the rear cover 12 with a plurality of screws. The opening shape of the vent 171 is a circular shape. The inner diameter of the vent hole 171 is smaller than the inner diameter of the outer cylinder 2 and larger than the outer diameter of the rotating body 3 and the outer diameter of the housing mounting portion 122 of the rear cover 12. The material of the rear panel 17 is, for example, aluminum.

  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 attachment portion 122 in the rear cover 12. A mesh 181 (see FIGS. 3B and 4) is provided at the center of the ventilation panel 18. The ventilation panel 18 is disposed so as to overlap the housing attachment portion 122 on the side opposite to the outer cylinder 2 side in the rear cover 12. The ventilation panel 18 is fixed to the housing attachment portion 122 by a plurality of screws.

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

  In the separation device 1, when the rotating body 3 is rotated by the rotation of the rotating shaft 42 of the motor 4, the rotating body 3 and the plurality of blades 36 are rotated in the same direction. The separating device 1 can apply a rotational force around the rotation center axis 30 to the air flowing into the flow path 5 (see FIGS. 2, 4, and 5) by rotating the rotating body 3. Become. In the separation device 1, when the rotating body 3 rotates, the velocity vector of the air flowing through the flow path 5 has a velocity component in a direction parallel to the rotation center axis 30 and a velocity component in the rotation direction around the rotation center axis 30. And will have.

  Regarding the separation characteristics of the separation device 1, the separation efficiency tends to increase as the rotational speed of the rotating body 3 increases. As for the separation characteristics of the separation device 1, the separation efficiency tends to increase as the particle size increases. In the separating apparatus 1, for example, it is preferable that the rotational speed of the rotating body 3 is set so as to separate fine particles having a prescribed particle size or more. As fine particles having a prescribed particle size, for example, particles having an aerodynamic particle size of 0.3 μm to 10 μm are assumed. “Aerodynamic particle size” means the diameter of a particle such that the aerodynamic behavior is equivalent to a spherical particle with a specific gravity of 1.0. The aerodynamic particle size is a particle size determined from the sedimentation rate of particles. Examples of the solid that remains in the air without being separated by the separation device 1 include fine particles having a smaller particle diameter than the fine particles that are supposed to be separated by the separation device 1 (in other words, fine particles having a small mass). .

  In the separation device 1, in order to discharge the solid contained in the air flowing into the outer cylinder 2 from the inlet 23 of the outer cylinder 2 to the outside of the outer cylinder 2, the outer cylinder 2 is connected to the outer cylinder 2. A discharge hole 25 (see FIGS. 2, 5, 6, 7A and 7B) for communicating the inside and outside of the body 2 is formed. Further, the separation device 1 includes a collector 6 into which solids discharged from the inside of the outer cylindrical body 2 through the discharge hole 25 enter. In the separation device 1, the solid discharged from the discharge hole 25 is deposited on the bottom surface of the collector 6 by, for example, gravity sedimentation.

  The discharge hole 25 is formed in an elongated slit shape between the first end 21 and the second end 22 of the outer cylindrical body 2 in the direction along the rotation center axis 30 of the rotating body 3. In the direction along the central axis 20 of the outer cylindrical body 2, the distance between the discharge hole 25 and the inflow port 23 is shorter than the distance between the blade 36 and the inflow port 23, but is not limited thereto. Further, in the direction along the central axis 20 of the outer cylindrical body 2, the distance between the discharge hole 25 and the outlet 24 is longer than the distance between the blade 36 and the outlet 24, but this is only an example and is not limited thereto. Absent. In the separation device 1, the inside of the outer cylinder 2 is independent of the size of the solid in the air flowing into the outer cylinder 2 and the position of the outer cylinder 2 in the direction along the central axis 20 (see FIGS. 4 and 7A). The solid passing through the vicinity of the peripheral surface 27 can be discharged from the discharge hole 25.

  The collector 6 is provided on the opposite side of the outer cylinder 2 from the rotating body 3 side. The collector 6 is disposed so as to cover the discharge hole 25 on the outer side of the outer cylindrical body 2. Thereby, the internal space of the collector 6 communicates with the flow path 5 inside the outer cylinder 2. In the separation device 1, the solid discharged from the inside of the outer cylinder 2 through the discharge hole 25 enters the collector 6. The collector 6 is detachably attached to the outer cylinder 2.

  The collector 6 is a container without a lid. As shown in FIG. 7A, the collector 6 includes a bottom wall 60, a peripheral wall 65, and a mounting flange 66.

  The bottom wall 60 is formed in a rectangular shape whose longitudinal direction is a direction parallel to the central axis 20 (see FIGS. 4 and 7A) of the outer cylindrical body 2. The length of the bottom wall 60 in the longitudinal direction is longer than the length of the discharge hole 25 in the direction parallel to the central axis 20 of the outer cylinder 2. As shown in FIG. 5, the bottom wall 60 is located obliquely below the outer cylindrical body 2. Further, the bottom wall 60 is disposed on the bottom cover 13.

  The peripheral wall 65 protrudes in the thickness direction of the bottom wall 60 from the entire periphery of the outer peripheral edge of the bottom wall 60. The peripheral wall 65 includes a first side wall 61, a second side wall 62, a third side wall 63, and a fourth side wall 64. The first side wall 61 protrudes in the thickness direction of the bottom wall 60 from the edge of the first end 21 and the second end 22 of the outer cylindrical body 2 on the side close to the first end 21 in the longitudinal direction of the bottom wall 60. ing. The second side wall 62 projects in the thickness direction of the bottom wall 60 from the edge of the first end 21 and the second end 22 of the outer cylindrical body 2 on the side close to the second end 22 in the longitudinal direction of the bottom wall 60. ing. Therefore, the first side wall 61 and the second side wall 62 face each other in a direction parallel to the central axis 20 of the outer cylinder 2. The shape of the first side wall 61 and the shape of the second side wall 62 are the same. The front end surfaces 611 and 612 opposite to the bottom wall 60 side in each of the first side wall 61 and the second side wall 62 are formed in a shape along the outer peripheral surface 28 of the outer cylindrical body 2.

  The third side wall 63 protrudes in the thickness direction of the bottom wall 60 from the edge on the side close to the outer cylindrical body 2 in the short direction of the bottom wall 60. The fourth side wall 64 protrudes in the thickness direction of the bottom wall 60 from the end edge on the side far from the outer cylindrical body 2 in the short direction of the bottom wall 60. Therefore, the third side wall 63 and the fourth side wall 64 face each other in a direction parallel to the one-diameter direction of the outer cylindrical body 2. The protruding dimension of the fourth side wall 64 is longer than the protruding dimension of the third side wall 63. The protruding dimension of the third side wall 63 is the same as the protruding dimension at the end of the first side wall 61 and the second side wall 62 on the third side wall 63 side. The protruding dimension of the fourth side wall 64 is the same as the protruding dimension at the end of the first side wall 61 and the second side wall 62 on the fourth side wall 64 side. In the collector 6, the first side wall 61, the second side wall 62, the third side wall 63, and the fourth side wall 64 constitute a peripheral wall 65 having a rectangular frame shape in plan view. In plan view, the discharge hole 25 is surrounded by the peripheral wall 65 of the collector 6.

  The mounting flange 66 protrudes outward from the outer peripheral edge of the fourth side wall 64 in the same plane as the fourth side wall 64.

  In the separation apparatus 1, the attachment part 26 (refer FIG. 7B) to which the collector 6 is attached to the outer peripheral surface 28 of the outer cylinder 2 so that attachment or detachment is possible is provided. Here, the attachment flange 66 of the collector 6 is attached to the attachment portion 26 with a screw. The attachment portion 26 protrudes from the outer peripheral surface 28 of the outer cylindrical body 2. The mounting portion 26 includes a first side piece 261, a second side piece 262, and a third side corresponding to the first side wall 61, the second side wall 62, the third side wall 63, and the fourth side wall 64 of the mounting flange 66 on a one-to-one basis. A piece 263 and a fourth side piece 264 are provided.

  The first side piece 261 and the second side piece 262 oppose each other in a direction parallel to the central axis 20 of the outer cylindrical body 2. The shapes of the first side piece 261 and the second side piece 262 are the same as the shapes of the first side wall 61 and the second side wall 62 of the collector 6 when viewed from the direction parallel to the central axis 20 of the outer cylindrical body 2. is there. The distance between the opposing surfaces of the first side piece 261 and the second side piece 262 is substantially the same as the distance between the outer side surfaces of the first side wall 61 and the second side wall 62 of the collector 6. When viewed from one direction parallel to the radial direction of the outer cylindrical body 2, the shape of the third side piece 263 is the same as the shape of the third side wall 63 of the collector 6. In the attachment portion 26, the attachment flange 66 of the collector 6 is fixed to the first side piece 261, the second side piece 262, and the fourth side piece 264 with screws. In the separation device 1, the tip end surface of the peripheral wall 65 of the collector 6 contacts or approaches the outer peripheral surface 28 of the outer cylindrical body 2 in a state where the collector 6 is attached to the attachment portion 26. Here, in the collector 6, it is preferable that the distal end surface of the peripheral wall 65 is in contact with the outer peripheral surface 28 of the outer cylindrical body 2 over the entire periphery.

  The separation device 1 has a plurality (two in this embodiment) of partition walls 10 (see FIGS. 2, 5, and 7A) that divide the internal space of the collector 6 into a plurality of (in this embodiment, three) spaces. Is further provided. The plurality of partition walls 10 are arranged in the internal space of the collector 6. Each of the plurality of partition walls 10 intersects (in the present embodiment, orthogonal) in a direction (parallel direction) along the rotation center axis 30 (see FIG. 4) of the rotating body 3. Here, each of the plurality of partition walls 10 is orthogonal to the direction parallel to the rotation center axis 30 of the rotator 3 (that is, the angle formed by the partition wall 10 and the rotation center axis 30 is 90 °). Not exclusively. Each of the plurality of partition walls 10 may intersect with a direction parallel to the rotation center axis 30 of the rotating body 3 within a range of 30 ° to 150 °, for example. In the separation device 1 of the present embodiment, the plurality of partition walls 10 are arranged in the collector 6 and are arranged in a direction along the rotation center axis 30 of the rotating body 3. Thus, in the separation device 1, the internal space of the collector 6 is divided into a plurality (three) of spaces arranged in the direction along the rotation center axis 30 by the plurality (two) of partition walls 10. . As an example, the plurality of partition walls 10 are arranged at substantially equal intervals in the direction along the rotation center axis 30 of the rotating body 3. The plurality of partition walls 10 are disposed on the bottom wall 60 of the collector 6. Each of the front end surfaces 10 a (see FIG. 7A) of the plurality of partition walls 10 is formed in a shape along the outer peripheral surface 28 of the outer cylindrical body 2. It is preferable that the curvature radius of each of the front end surfaces 10 a of the plurality of partition walls 10 is the same as the curvature radius of the outer peripheral surface 28 of the outer cylinder 2. In the separation device 1, the partition wall 10 is integral with the collector 6. In the separation device 1, the material of the collector 6 and the plurality of partition walls 10 is a synthetic resin, and the collector 6 and the partition walls 10 are integrally formed.

  In the separation device 1, during the rotation of the rotating body 3, a part of the air solid flowing in from the inlet 23 of the outer cylindrical body 2 is captured by the centrifugal force or the like while passing through the flow path 5 (see FIG. 2). Enter the collector 6.

  In the separation device 1, the collector 6 is detachably attached to the outer cylinder 2, so that, for example, a person removes the collector 6 from the outer cylinder 2 and removes the solid in the collector 6. Discard and then the collector 6 can be attached to the outer cylinder 2.

  In the separation apparatus 1, when discarding the solid accumulated in the collector 6, for example, the bottom cover 13 is removed from the front cover 11 and the rear cover 12, and then the collector 6 is removed from the outer cylinder 2, The solid in the collector 6 is discarded, and then the collector 6 is attached to the outer cylinder 2, and then the bottom cover 13 is attached to the front cover 11 and the rear cover 12. In the maintenance of the separation device 1, a replacement collector 6 may be attached to the outer cylinder 2 instead of the removed collector 6.

  In the separation device 1, external air passes through the space inside the vent hole 161 (see FIGS. 1A, 4 and 6) of the front panel 16 and the first frame portion 111 (see FIGS. 1A and 2) of the front cover 11. 2 inflow port 23. The solid contained in the air flowing into the outer cylinder 2 is rotated from the rotation center axis 30 (see FIG. 4) of the rotating body 3 when rotating in a spiral manner in the flow path 5 (see FIG. 2). The centrifugal force in the direction toward the inner peripheral surface 27 is received. The solid subjected to the centrifugal force travels toward the inner peripheral surface 27 of the outer cylindrical body 2 and spirally rotates along the inner peripheral surface 27 in the vicinity of the inner peripheral surface 27 of the outer cylindrical body 2. In the separation device 1, a part of the solid in the air is discharged from the discharge hole 25 (see FIGS. 2 and 5) and collected in the collector 6 while passing through the flow path 5.

  In the separation device 1, since a swirl flow is generated inside the outer cylinder 2, a part of solids (dust etc.) in the air flowing into the outer cylinder 2 from the inlet 23 of the outer cylinder 2 is discharged. Part of the air (purified air) collected in the collector 6 through the holes 25 and separated (removed) from solids (dust etc.) flows out from the outlet 24 of the outer cylinder 2.

  The separation device 1 can collect the solid in the air flowing into the flow path 5 in the collector 6 and can flow the air from which the solid is separated to the downstream side. It becomes possible to separate solids efficiently.

  By the way, in the separator of the said one modification described in patent document 1, the discharge part is comprised by the discharge port penetrated along the radial direction of the frame on the downstream side of the frame (outer cylinder). . In short, in the separator described in Patent Document 1, the discharge portion is configured by a discharge port (discharge hole) formed closer to the outflow port than the inflow port of each of the plurality of flow paths.

The inventors of the present application produced a separation device of Comparative Example 1 having a discharge hole near the outlet, like the separator of the above-described modification described in Patent Document 1, and had a particle size equivalent to that of PM2.5. An experiment was conducted to measure the separation characteristics of a solid using a test powder having the following characteristics. Here, as test powders, for example, 11 types (Class 11) of “Test Powder 1” defined in JIS Z 8901 were used. These 11 kinds of chemical components are SiO ₂ , Fe ₂ O ₃ , Al ₂ O _{3 and the} like. Moreover, the median diameter of these 11 types is 1.6 to 2.3 μm. As a result of the experiment, the inventors of the present application have come to the conclusion that further improvement of the separation characteristics is necessary.

  Therefore, the inventors of the present invention made the separation device of Comparative Example 2 in which the length of the frame in the separation device of Comparative Example 1 was made longer and the partition plate portion was connected only to the shaft body, and the solid separation characteristics were improved. Experiments to measure were performed. However, as a result of this experiment, the inventors of the present application have come to the conclusion that further improvement of the separation characteristics is necessary.

  Therefore, the inventors of the present application examined in more detail the airflow inside the frame of the separation device of Comparative Example 2. The airflow inside the frame in the separation device of Comparative Example 2 can be estimated from the result of simulation using fluid analysis software, for example. As the fluid analysis software, for example, ANSYS (R) Fluent (R) can be adopted.

  As a result of the simulation, the inventors of the present application have found that the separation device of Comparative Example 2 has a large amount of airflow that flows linearly without swirling and a high speed with respect to the airflow from the inlet to the outlet in the flow path. Got.

  On the other hand, in the separation device 1 of the present embodiment, the inner peripheral surface of the outer cylindrical body 2 between the first end 21 and the second end 22 in the direction along the central axis 20 of the outer cylindrical body 2. 27, airflow control ribs 29 (FIGS. 2, 4, 5 and 7A) projecting inward in the radial direction of the outer cylindrical body 2 are provided. The airflow control rib 29 is formed over the entire circumference of the inner circumferential surface 27 of the outer cylindrical body 2 as an example. In short, the airflow control rib 29 is formed in an annular shape.

  In the separating device 1, each of the plurality of blades 36 extends from the first end 21 to the second end 22 of the outer cylinder 2 in the direction along the rotation center axis 30 of the rotating body 3. It arrange | positions so that the surface 27 may be opposed. In the separation device 1, the projecting dimension of the airflow control rib 29 is larger than the shortest distance between each of the plurality of blades 36 and the inner peripheral surface 27 of the outer cylindrical body 2. Here, the “projection dimension of the airflow control rib 29” means the projection dimension of the airflow control rib 29 from the inner peripheral surface 27 of the outer cylindrical body 2 inward in the radial direction. Further, “the shortest distance between each of the plurality of blades 36 and the inner peripheral surface 27 of the outer cylindrical body 2” refers to each of the plurality of blades 36 in the radial direction of the outer cylindrical body 2 and the inner peripheral surface of the outer cylindrical body 2. This means the shortest distance from 27. The length of the outer cylinder 2 in the direction along the central axis 20 of the outer cylinder 2 is, for example, 300 mm. The inner diameter of the outer cylinder 2 is 240 mm, for example. The outer diameter of the rotating body 3 is 160 mm, for example. The distance between the inner peripheral surface 27 of the outer cylindrical body 2 and the outer peripheral surface 37 of the rotating body 3 is 40 mm. The projecting dimension of the airflow control rib 29 is, for example, 20 mm. The thickness of the airflow control rib 29 in the direction parallel to the central axis 20 of the outer cylinder 2 is, for example, 5 mm. The shortest distance between each of the plurality of blades 36 and the inner peripheral surface 27 of the outer cylinder 2 is, for example, 5 mm.

  Each of the plurality of blades 36 has a groove 360 at the center in the longitudinal direction of the side edge facing the inner peripheral surface 27 of the outer cylindrical body 2. In the separation device 1 of the present embodiment, the distance between each of the plurality of blades 36 and the inner peripheral surface 27 of the outer cylinder 2 in the radial direction of the outer cylinder 2 is constant at a portion other than the groove 360. The depth direction of the groove 360 is a direction along the radially inward direction of the outer cylindrical body 2. The groove 360 is open on the inner peripheral surface 27 side of the outer cylindrical body 2 and on both sides in the thickness direction of the blade 36. Here, the groove 360 is U-shaped, and has a bottom surface and a pair of inner surfaces as inner surfaces. In the separation device 1, there is a gap between the inner surface of the groove 360 and the airflow control rib 29. Here, the distance between the bottom surface of the groove 360 and the front end surface of the airflow control rib 29 in the radial direction of the outer cylindrical body 2 is, for example, 5 mm. Further, the distance between each of the pair of inner side surfaces of the groove 360 and the airflow control rib 29 in the direction parallel to the central axis 20 of the outer cylinder 2 is, for example, 5 mm. Thereby, in the separation apparatus 1, the airflow control rib 29 can be prevented from coming into contact with the plurality of blades 36 during the rotation of the rotating body 3.

The inventors of the present application have devised a separation apparatus of a reference example in which an airflow control rib similar to the airflow control rib 29 of the separation apparatus 1 of the present embodiment is provided on the inner peripheral surface of the frame with respect to the separation apparatus of Comparative Example 2. did. And about the airflow inside the frame in the separation apparatus of a reference example, the airflow was simulated using the above-mentioned fluid analysis software. As a result of the simulation of the airflow, in the separation device of the reference example, the airflow from the inlet side to the outlet side of the airflow from the inlet to the outlet in the flow path collides with the airflow control rib, so that the airflow control rib side changes to the inlet side. It was confirmed that a returning airflow was generated. In addition, as a result of the simulation of the air flow, in the separation device of the reference example, flow separation is generated by the air flow control rib, so that in addition to the air flow that flows linearly without swirling, the inlet from the outlet side It was confirmed that a return airflow toward the side occurred. The airflow control rib 29 of the separation device 1 of the present embodiment is similar to the airflow control rib of the separation device of the reference example, and a part of the airflow from the inlet 23 side to the outlet 24 side inside the outer cylindrical body 2. The function of returning from the outlet 24 side to the inlet 23 side (airflow control function) is provided. In addition, in the configuration of the reference example, as a result of simulation, it was confirmed that separation efficiency can be improved while suppressing an increase in pressure loss. Here, the improvement of the separation efficiency was evaluated by the value of the particle size by 50%. As an example, when the flow rate is 250 m ³ / h and the rotation speed is 1900 rpm, in Comparative Example 2, the pressure loss (difference between the inlet pressure and the outlet pressure) is 175.1 Pa, and the particle size is 50%. Whereas it was 4.12 μm, in the reference example, the pressure loss was 188.2 Pa, and the 50% particle size was 2.82 μm. In the reference example, the reason why the particle size is improved by 50% compared to Comparative Example 2 is presumed that it is possible to more efficiently separate the solid contained in the gas by generating a return airflow. Is done. Further, in the configuration of the reference example, as a result of the simulation, the separation efficiency of the separation device of Comparative Example 2 is higher than that of Comparative Example 3 in which ribs protruding from the outer peripheral surface of the shaft body to the frame body side are provided over the entire circumference. It was confirmed that improvement of

  In the separation apparatus 1 of the present embodiment, it is possible to improve the separation efficiency as compared with the separation apparatus of Comparative Example 1 and the separation apparatus of Comparative Example 2.

  For example, in an air purification system installed in a house or the like, the separation device 1 is used by being disposed on the upstream side of an air filter such as a HEPA filter (high efficiency particulate air filter) disposed on the upstream side of the air conditioning equipment. The “HEPA filter” is an air filter having a particle collection rate of 99.97% or more with respect to particles having a particle size of 0.3 μm at a rated flow rate and an initial pressure loss of 245 Pa or less. The air filter does not make the particle collection efficiency of 100% an essential condition. By providing the separation device 1, the air purification system can suppress fine particles such as PM2.5 from reaching the air filter. Therefore, in the air purification system, it is possible to extend the life of an air filter or the like that is on the downstream side of the separation device 1. For example, in the air purification system, it is possible to suppress an increase in pressure loss due to an increase in the total mass of particulates or the like collected by the air filter. Thereby, in the air purification system, it is possible to reduce the replacement frequency of the air filter. 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 conditioning equipment may include an air filter in addition to the blower.

  The above embodiment is only one of various embodiments of the present invention. The above-described embodiment can be variously changed according to the design or the like as long as the object of the present invention can be achieved.

  For example, in the separation device 1, the projecting dimension of the airflow control rib 29 projecting from the inner peripheral surface 27 of the outer cylinder 2 is larger than the shortest distance between each of the plurality of blades 36 and the inner peripheral surface 27 of the outer cylinder 2. Although it is large, it is not restricted to this, The said protrusion dimension may be smaller than the said shortest distance. In this case, in the separation device 1, each of the plurality of blades 36 may have the groove 360, but may not have it.

  Further, in the separation device 1, each of the plurality of blades 36 has a groove 360 that avoids the airflow control rib 29 at the center in the longitudinal direction of the side edge facing the inner peripheral surface 27 of the outer cylindrical body 2. The position of the groove 360 in the longitudinal direction of the blade 36 is not limited to the center. In this case, the position of the airflow control rib 29 can be appropriately changed according to the position of the groove 360. Further, the shape of the groove 360 is not limited to the U shape, and may be a V shape, for example.

  In the separation device 1, the airflow control rib 29 is not limited to the annular shape formed over the entire circumference of the inner circumferential surface 27 of the outer cylinder 2. For example, in the separation device 1, the airflow control rib 29 has an arc shape formed along the inner peripheral surface 27 of the outer cylinder 2, and the plurality of airflow control ribs 29 are separated from each other in the circumferential direction of the outer cylinder 2. It may be arranged. Further, in the separation device 1, the shape of the airflow control rib 29 is an annular shape along the inner peripheral surface 27 of the outer cylindrical body 2, and a plurality of airflow control ribs 29 are provided. They may be arranged apart from each other in a direction parallel to the central axis 20 of the body 2.

  The material of the outer cylinder 2 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, and may be a metal, for example. 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 connected to the rotating body 3 by being formed as a separate member from the rotating body 3 and being fixed to the rotating body 3.

  The rotating body 3 is not limited to the configuration including the two rotating members 3a and 3b arranged in the direction along the central axis 20 of the outer cylindrical body 2. For example, the rotating body 3 includes only one of the two rotating members 3a and 3b. It may be configured. 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 piece constituting a part of each of the plurality of blades 36 is also connected to the rotating member between the two rotating members 3a and 3b.

  The discharge hole 25 may have a slit shape that is at least partially elongated in the direction along the rotation center axis 30 of the rotating body 3 (in other words, the direction along the center axis 20 of the outer cylindrical body 2). One or more arcuate slits that are long in the circumferential direction of the cylindrical body 2 may be included.

  In the separation device 1, only one discharge hole 25 is formed in the outer cylindrical body 2, but the present invention is not limited to this, and a plurality of discharge holes 25 may be formed. In this case, it is preferable that the plurality of discharge holes 25 are arranged apart from each other in the circumferential direction of the outer cylindrical body 2. In this case, a plurality of collectors 6 may be provided in the separation device 1, and the plurality of collectors 6 may be arranged to correspond to the plurality of discharge holes 25 on a one-to-one basis.

  In the separation device 1, the attachment flange 66 of the collector 6 is attached to the attachment portion 26 with a screw. However, the present invention is not limited to this, and it is sufficient that the collector 6 can be attached to and detached from the outer cylinder 2. In short, in the separating apparatus 1, the mounting flange 66 and the screw are not essential components.

  Moreover, the material of the collector 6 and the some partition wall 10 is not restricted to a synthetic resin, A metal etc. may be sufficient. Further, the collector 6 and the plurality of partition walls 10 may be made of different materials. In the separation device 1, the collector 6 and the plurality of partition walls 10 may be formed as separate members and integrated by adhesion, welding, fitting, screw fixing, or the like.

  Moreover, the number of the partition walls 10 arrange | positioned in the collector 6 is not restricted to plural, One may be sufficient. Moreover, when arrange | positioning the some partition wall 10 in the collector 6, the number of the partition walls 10 is not restricted to two, Three or more may be sufficient.

  As is clear from the above-described embodiment, the separation device 1 according to the first aspect includes the outer cylindrical body 2, the rotating body 3, the plurality of blades 36, and the motor 4. The outer cylinder 2 has a cylindrical shape, and has a gas inlet 23 at the first end 21 and a gas outlet 24 at the second end 22. The rotating body 3 is disposed inside the outer cylindrical body 2. The rotating body 3 is arranged such that the rotation center axis 30 is aligned with the center axis 20 of the outer cylinder 2. The plurality of blades 36 are arranged apart from each other in the outer circumferential direction of the rotating body 3 between the rotating body 3 and the outer cylindrical body 2, and are connected to the rotating body 3. The motor 4 rotates the rotating body 3 around the rotation center axis 30. The outer cylinder 2 has a discharge hole 25 that allows the inside and outside of the outer cylinder 2 to communicate between the first end 21 and the second end 22. Each of the plurality of blades 36 is disposed in parallel to the direction along the rotation center axis 30 of the rotating body 3. The separation device 1 includes an airflow control rib 29 that protrudes inward in the radial direction of the outer cylinder 2 from the inner peripheral surface 27 of the outer cylinder 2 between the first end 21 and the second end 22 of the outer cylinder 2. Is further provided.

  With the above configuration, the separation device 1 can improve the separation performance for separating the solid contained in the gas from the gas.

  In the separation device 1 according to the second aspect, in the first aspect, the airflow control rib 29 is formed over the entire circumference of the inner peripheral surface 27 of the outer cylindrical body 2. Thereby, in separation device 1, it becomes possible to aim at the further improvement of the separation performance which separates the solid contained in gas from gas.

  In the separation device 1 according to the third aspect, in each of the first and second aspects, each of the plurality of blades 36 has the second end 22 from the first end 21 of the outer cylindrical body 2 in the direction along the rotation center axis 30. It arrange | positions so that it may oppose the internal peripheral surface 27 of the outer cylinder 2 over it. The projecting dimension of the airflow control rib 29 is larger than the shortest distance between each of the plurality of blades 36 and the inner peripheral surface 27 of the outer cylindrical body 2. Each of the plurality of blades 36 has a groove 360. The depth direction of the groove 360 is a direction along the radially inward direction of the outer cylindrical body 2. The groove 360 is open on the inner peripheral surface 27 side of the outer cylindrical body 2 and on both sides in the thickness direction of the blade 36. There is a gap between the inner surface of the groove 360 and the airflow control rib 29. As a result, in the separation device 1, the projecting dimension of the airflow control rib 29 can be made relatively large, and the separation efficiency can be improved.

  In the separation device 1 according to the fourth aspect, in any one of the first to third aspects, at least a part of the discharge hole 25 is formed in a slit shape in the direction along the rotation center axis 30 of the rotating body 3. Has been. Thereby, in separation device 1, it becomes possible to aim at the further improvement of the separation performance which separates the solid contained in gas from gas.

DESCRIPTION OF SYMBOLS 1 Separator 2 Outer cylinder 20 Central axis 21 1st end 22 2nd end 23 Inlet 24 Outlet 25 Outlet hole 27 Inner peripheral surface 29 Airflow control rib 3 Rotor 30 Rotation center axis 31 1st end 32 2nd end 36 blades 360 grooves 4 motors

Claims (4)

A cylindrical outer cylinder having a gas inlet at the first end and a gas outlet at the second end;
On the inner side of the outer cylinder, a rotating body arranged so that a rotation center axis is aligned with the center axis of the outer cylinder;
A plurality of blades arranged apart from each other in the outer circumferential direction of the rotating body between the rotating body and the outer cylinder, and connected to the rotating body;
A motor for rotating the rotating body around the rotation center axis;
With
The outer cylinder has a discharge hole for communicating the inside and outside of the outer cylinder between the first end and the second end,
Each of the plurality of blades is arranged in parallel to the direction along the rotation center axis of the rotating body,
An airflow control rib that protrudes inward in the radial direction of the outer cylinder from the inner peripheral surface of the outer cylinder between the first end and the second end of the outer cylinder. Separation device. The separation apparatus according to claim 1, wherein the airflow control rib is formed over the entire circumference of the inner peripheral surface of the outer cylindrical body. Each of the plurality of blades is disposed so as to face the inner peripheral surface of the outer cylinder from the first end to the second end of the outer cylinder in a direction along the rotation center axis. And
The projecting dimension of the airflow control rib is greater than the shortest distance between each of the plurality of blades and the inner peripheral surface of the outer cylinder,
Each of the plurality of blades has a groove that is formed inward in the radial direction of the outer cylindrical body and that is open on both the inner peripheral surface side of the outer cylindrical body and both sides in the thickness direction of the blade.
The separation device according to claim 1, wherein there is a gap between the inner surface of the groove and the airflow control rib. The separation device according to any one of claims 1 to 3, wherein at least a part of the discharge hole is formed in an elongated slit shape in a direction along the rotation center axis.

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