JP2018187550A - Separation device - Google Patents

Abstract

To provide a separation device capable of improving the performance of separating a solid contained in a gas from the gas. A separating apparatus includes an outer cylindrical body, a rotating body, a plurality of blades, and a motor. 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. The rotating body 3 has a first end 31 on the inlet 23 side and a second end 32 on the outlet 24 side, and an opening 34b at the second end 32. The separation device 1 further includes an airflow control member 5. The airflow control member 5 is located on the opposite side of the second end 32 of the rotating body 3 from the first end 31 side of the rotating body 3 and controls the airflow. [Selection] Figure 1

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 separation device including a rotating structure and a driving device has been proposed (Patent Document 1).

  The rotating structure includes a rotor, a plurality of cylindrical bodies, a plurality of first partition plates, and a plurality of second partition plates.

  The drive device rotates the rotating structure around the rotation center axis of the rotor. The drive device is constituted by a motor.

JP-A-2006-198719

  In the field of separation devices, it is desired to further improve the performance of separating a solid contained in a gas from the gas.

  An object of the present invention is to provide a separation apparatus capable of improving the performance of 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 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. The rotating body has a first end on the inlet side and a second end on the outlet side, and has an opening at the second end. The separation device further includes an airflow control member. The airflow control member is located on a side opposite to the first end side of the rotating body at the second end of the rotating body and controls airflow.

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

FIG. 1 is a cross-sectional view of a separation apparatus according to Embodiment 1 of the present invention. FIG. 2 is a perspective cross-sectional view of a second rotating shaft and a propeller in the separation device same as above. FIG. 3A is a perspective view of an essential part of the separation device same as above. FIG. 3B is a perspective view of an essential part of the separation device as seen from another direction. FIG. 4 is a cross-sectional perspective view of an essential part of the separation device. FIG. 5A is a front view of an essential part of the separation device same as above. FIG. 5B is a left side view of an essential part of the separation device. FIG. 6 is a sectional view taken along line YY of FIG. FIG. 7 is an exploded perspective view of the separation device. FIG. 8A is an exploded perspective view showing the outer cylinder body and the collector in the separation apparatus same as the above, as seen from above. FIG. 8B is an exploded perspective view showing the outer cylinder and the collector in the separation device same as the above, as seen from the lower side. FIG. 9 is a cross-sectional view of a separation apparatus according to Embodiment 2 of the present invention. FIG. 10 is a cross-sectional view of a second rotating shaft, a reversing mechanism, and a plurality of second rotating blades in the separation device same as above. FIG. 11 is a cross-sectional view of a separation apparatus according to Embodiment 3 of the present invention. FIG. 12 is a cross-sectional view of a separation apparatus according to Modification 1 of Embodiment 3 of the present invention. FIG. 13 is a cross-sectional view of a separation apparatus according to Modification 2 of Embodiment 3 of the present invention.

(Embodiment 1)
Below, the separation apparatus 1 of this embodiment is demonstrated based on FIGS. 1-8B. Here, FIG. 1 is a cross-sectional view corresponding to a cross section taken along line XX of FIG. 5A.

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 shown in FIGS. 1, 3A, 3B, 4, 6 and 7, the separation device 1 includes an outer cylinder 2, a rotating body 3, a plurality of blades 36, a motor 4, an exhaust duct 150, and airflow control. And a member 5. 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. 1 and 4, a flow path 200 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. Moreover, 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. 1, 4 and 7).

  The separation device 1 can flow the air flowing into the flow path 200 from the upstream side to the downstream side of the flow path 200 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. 4, 6, 7, and 7) 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. 8A and 8B).

  The exhaust duct 150 is disposed on the second end 22 side of the outer cylindrical body 2. Accordingly, the exhaust duct 150 is located on the downstream side of the rotating body 3 and the outer cylinder 2. The internal space of the exhaust duct 150 is connected to the flow path 200.

  The airflow control member 5 is a member for controlling the airflow in the separation device 1. The airflow control member 5 is provided in order to suppress the backflow of gas in the separation device 1. “Gas backflow occurs” means that gas flows from the downstream side to the upstream side in the separation device 1. The airflow control member 5 is disposed in the exhaust duct 150.

  The separation device 1 further includes a collector 6 whose internal space is connected to the discharge hole 25 of the outer cylindrical body 2. In other words, the separation device 1 includes the collector 6 into which the solid discharged from the inside of the outer cylinder 2 through the discharge hole 25 enters.

  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, the collector 6, and the exhaust duct 150. The airflow control member 5 is provided.

  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. 1 and 6, the rotating body 3 is disposed coaxially with the outer cylindrical body 2 inside the outer cylindrical body 2. The phrase “arranged coaxially with the outer cylindrical body 2” means that the rotating body 3 uses the rotation center axis 30 (see FIG. 1) of the rotating body 3 as the center axis 20 of the outer cylinder 2 (see FIGS. 1 and 8A). ). In the rotating body 3, the outer peripheral line in the cross section (for example, refer FIG. 6) orthogonal to the rotation center axis | shaft 30 is circular shape. 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 shown in FIG. 1, the rotator 3 has 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. 1 and 6, each of the plurality of blades 36 is disposed so that a gap is formed between the inner peripheral surface 27 of the outer cylinder 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 disposed in parallel to the rotation center axis 30 of the rotating body 3 in a space (flow path 200) between the outer peripheral surface 37 of the rotating body 3 and the inner peripheral surface 27 of the outer cylindrical body 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. 6, the plurality of blades 36 are arranged at substantially equal intervals in the circumferential direction of the rotating body 3.

  The above-described rotating body 3 includes two rotating members 3a and 3b arranged in a direction along the central axis 20 (see FIGS. 1 and 8A) of the outer cylindrical body 2, as shown in FIGS. 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 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. 1). 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 first 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 first rotating shaft 42 of the motor 4 by the shaft coupling 8. In the separation device 1, the first 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. 1 and 4, the motor 4 includes a motor main body 41 and the first rotating shaft 42 that partially protrudes from the motor main body 41. The first rotating shaft 42 has a cylindrical shape. The motor 4 is a double-axis motor, and has a second rotating shaft 43 that protrudes from the motor main body 41 on the opposite side to the first rotating shaft 42. In the separation device 1, the airflow control member 5 is connected to the second rotating shaft 43.

  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. 1, 4 and 7) 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. 1, the motor housing 9 has 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. 1, 6 and 7) 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. 1, the shaft 7 includes a hole 35a formed in the center of the bottom wall 33a of the upstream side rotation member 3a and a hole 35b formed in 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. 1) 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. 1 and 7) 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 first 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 illustrated in FIGS. 1 to 7, 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. 1, 5A, 6 and 7.

  The front cover 11 is detachably attached to a first flange 211 (see FIGS. 3B and 4) protruding outward from the first end 21 of the outer cylindrical body 2 by a plurality of (for example, four) screws. . The rear cover 12 is detachably attached to a second flange 221 (see FIGS. 3A and 4) 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. 3A and 4, 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. 3B and 4, 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. 1, 5A, 6 and 7) 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 outer cylinder 2 includes a casing 300 including a front cover 11, a rear cover 12, and a bottom cover 13 that surrounds the outer cylinder 2 from three sides as shown in FIG. 5A. In addition to the front cover 11, the rear cover 12, and the bottom cover 13, the housing 300 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. 1, 5A and 7, the separation device 1 further includes a front panel 16, a rear panel 17, and an opening cover panel 18.

  The outer peripheral shape of the front panel 16 is a square shape. The front panel 16 is formed with a ventilation hole 161 (see FIGS. 1, 3A, 3B and 7) 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. 1, 5B and 7) 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 opening cover panel 18 is a panel that covers the opening 34b of the rotating body 3 (downstream rotating member 3b) on the second end 32 side of the rotating body 3. The outer peripheral shape of the opening cover panel 18 is substantially circular. The outer diameter of the opening cover panel 18 is the same as the outer diameter of the housing mounting portion 122 in the rear cover 12. A through hole 181 (see FIGS. 1 and 5B) is provided at the center of the opening cover panel 18. The opening shape of the through hole 181 is circular. The opening cover panel 18 is disposed so as to overlap the housing mounting portion 122 on the opposite side of the rear cover 12 from the outer cylinder 2 side. The opening cover 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 first rotation shaft 42 (see FIGS. 1 and 4) of the motor 4. The rotating direction of the rotating body 3 is a clockwise direction (direction of arrow A1 in FIG. 6) 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 first rotating shaft 42 of the motor 4.

  In the separation device 1, when the rotating body 3 rotates due to the rotation of the first rotating shaft 42 of the motor 4, the rotating body 3 and the plurality of blades 36 rotate 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 200 (see FIGS. 1, 4, and 6) by rotating the rotating body 3. Become. In the separation device 1, the rotating body 3 rotates, so that the velocity vector of the air flowing through the flow path 200 has 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. 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. 4, 6, 7, 8 </ b> A and 8 </ b> B) that allows communication between 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 inlet 23 is shorter than the distance between the blade 36 and the inlet 23. Further, in the direction along the central axis 20 of the outer cylinder 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. In the separation device 1, the inside of the outer cylindrical body 2 is independent of the size of the solid in the air flowing into the outer cylindrical body 2 and the position of the outer cylindrical body 2 in the direction along the central axis 20 (see FIGS. 1 and 8A). The solid passing through the vicinity of the peripheral surface 27 can be discharged from the discharge hole 25. As a result, the separation device 1 can suppress solids from adhering to and depositing on the inner peripheral surface 27 of the outer cylindrical body 2.

  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 200 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. 8A, 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. 1 and 8A) 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. 6, 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. 8B) 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.

  By the way, the separating apparatus 1 has a plurality (two in this embodiment) of partition walls 10 (FIGS. 4, 6 and 8A) that divide the internal space of the collector 6 into a plurality of (three in this embodiment) spaces. Reference) 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. 1) of the rotator 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 degrees). Not exclusively. Each of the plurality of partition walls 10 may intersect within a range of 30 to 150 degrees in a direction parallel to the rotation center axis 30 of the rotating body 3, 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. 8A) 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 solid in the air 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 200 (see FIG. 4). 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. 1, 3A and 7) of the front panel 16 and the first frame portion 111 (see FIGS. 3A and 4) 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. 1) of the rotating body 3 when rotating in a spiral manner in the flow path 200 (see FIG. 4). 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. 4 and 6) and collected in the collector 6 while passing through the flow path 200.

  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.

  Since the separation device 1 can collect the solid in the air flowing into the flow path 200 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, the inventors of the present application, in the stage of earnestly studying a separation device that can further improve the separation efficiency as compared with the separation device described in Patent Document 1, and the separation device described in Patent Document 1 Similarly, a separation device of a comparative example in which a motor is arranged on the downstream side of the rotor has been devised. The separation device of the comparative example includes an outer cylinder, a rotating body, a plurality of blades, and a motor. The outer cylinder has a gas inlet at a first end and a gas outlet at a second end. The rotating body is arranged inside the outer cylinder so that the rotation center axis is aligned with the center axis of the outer cylinder. The plurality of blades are connected to the rotating body. The rotating body has a bottomed cylindrical shape with a first end closed and an opening at the second end. The opening of the rotating body is on the outlet side in the direction along the rotation center axis of the rotating body.

Then, the inventors of the present application conducted an experiment to measure the separation characteristics of the solid using the test powder having a particle size equivalent to that of PM2.5 for the separation apparatus of the comparative example. 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 found that the aggregate (lumps) of the test powder (solid) is adhered to the inner peripheral surface of the rotating body. As a reason why it is difficult to further improve the separation efficiency in the separation device described in Patent Document 1 and the separation device of the comparative example, the inventors of the present application are turbulent due to the airflow flowing backward from the downstream side to the upstream side in the separation device. It was thought that it was difficult to further improve the separation efficiency. The airflow in the separation device 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.

  By the way, in the separation apparatus 1 of this embodiment, as shown in FIG. 1, the rotating body 3 is the same as the rotating body in the separation apparatus of the comparative example. The second end 32 has an opening 34b.

  In the separation device 1, as shown in FIGS. 1 and 7, an exhaust duct 150 is disposed on the second end 22 side of the outer cylindrical body 2. The exhaust duct 150 has a first end 151 on the outer cylindrical body 2 side and a second end 152 on the opposite side to the outer cylindrical body 2 side. The exhaust duct 150 is connected to the outer cylinder 2 on the first end 151 side. Here, a flange 155 protruding outward is provided at the first end 151 of the first exhaust duct 150. In the separation device 1, the flange 155 of the exhaust duct 150 is detachably attached to the rear cover 12 and the rear panel 17 by, for example, a plurality of screws. The internal space of the exhaust duct 150 is connected to the flow path 200 between the outer cylinder 2 and the rotating body 3.

  The exhaust duct 150 has a circular first opening 153 at the first end 151 and a circular second opening 154 at the second end 152. The inner diameter of the second opening 154 is smaller than the inner diameter of the first opening 153. More specifically, the exhaust duct 150 includes a first cylindrical portion 150a having a constant inner diameter, and a second cylindrical portion 150b having an inner diameter that gradually decreases as the distance from the first cylindrical portion 150a increases. As for the exhaust duct 150, the 1st cylindrical part 150a is located in the outer cylinder 2 side among the 1st cylindrical part 150a and the 2nd cylindrical part 150b. The 2nd cylindrical part 150b is located in the opposite side to the outer cylinder 2 side in the 1st cylindrical part 150a. The exhaust duct 150 integrally includes the first cylindrical portion 150a and the second cylindrical portion 150b. However, the first cylindrical portion 150a and the second cylindrical portion 150b are separate members and are not limited thereto. The cylindrical portion 150a and the second cylindrical portion 150b may be coupled to each other.

  In the separation device 1 of the present embodiment, the airflow control member 5 (see FIGS. 1, 2, and 7) is located in the internal space of the exhaust duct 150. More specifically, the airflow control member 5 is located in the internal space of the first cylindrical portion 150 a of the exhaust duct 150.

  The airflow control member 5 is located on the opposite side of the second end 32 of the rotating body 3 from the first end 31 side of the rotating body 3. By providing the airflow control member 5 in the separation device 1, it is possible to suppress the generation of airflow that flows backward from the downstream side to the upstream side in the separation device 1. Therefore, in the separation device 1, it is possible to suppress the occurrence of turbulent flow in the flow path 200 between the outer cylindrical body 2 and the rotating body 3, and it is possible to improve the separation performance.

  The airflow control member 5 is configured to rotate together with the rotating body 3. More specifically, the airflow control member 5 is connected to the rotating body 3. Here, in the separating apparatus 1, the motor 4 is a biaxial motor, and includes a first rotating shaft 42 connected to the rotating body 3, and a second rotating shaft 43 positioned on the side opposite to the rotating body 3 side. Have. In the motor 4, the first rotation shaft 42 and the second rotation shaft 43 are aligned on a straight line. In the motor 4, the first rotating shaft 42 and the second rotating shaft 43 rotate together. The rotation direction of the first rotation shaft 42 and the rotation direction of the second rotation shaft 43 are the same. The rotation speed of the first rotation shaft 42 and the rotation speed of the second rotation shaft 43 are the same. The airflow control member 5 is connected to the second rotating shaft 43 of the motor 4. Thereby, in the separation apparatus 1, the airflow control member 5 is connected to the rotating body 3 via the motor 4.

  The airflow control member 5 includes a propeller 51 including a plurality of (for example, four) rotor blades 511. The number of rotor blades 511 in the propeller 51 is not limited to four, and may be two or eight, for example.

  Each of the plurality of rotor blades 511 includes a first surface 511a positioned rearward in the direction along the rotation direction of the rotating body 3, a second surface 511b positioned frontward in the direction along the rotation direction of the rotating body, It is a twist blade | wing which has. In the separation device 1, the second surface 511 b of each of the plurality of rotary blades 511 is positioned on the first opening 153 side of the exhaust duct 150 in the direction along the central axis 20 of the outer cylindrical body 2, and the first surface 511 a is the first. It is located on the 2 opening 154 side.

  When viewed from the direction along the rotation center axis 30 of the rotator 3, the opening 34 b of the rotator 3 is positioned within the range of the rotation trajectory of the outer ends of the plurality of rotor blades 511. The diameter of the rotation circle of the propeller 51 is longer than the inner diameter of the opening 34 b and shorter than the inner diameter of the first cylindrical portion 150 a of the exhaust duct 150. The diameter of the rotation circle of the propeller 51 is the same as the distance between both ends of the pair of rotor blades 511 arranged across the second rotation shaft 43 in the one radial direction of the second rotation shaft 43. is there.

  As shown in FIGS. 1 and 2, the separation device 1 includes a connecting device 100 that connects the second rotating shaft 43 of the motor 4 and the propeller 51. The second rotating shaft 43 is inserted through a hole 512 formed in the base 510 of the propeller 51.

  For example, as shown in FIG. 2, the connecting device 100 includes a hub 101, a sandwiching plate 102, a plurality of mounting bolts 103, a plurality of nuts 104, an annular outer metal fitting 105, and an annular inner metal fitting 106. And a plurality of bolts 107. The hub 101 includes a cylindrical portion 1011 that is inserted into the hole 512 of the base 510 of the propeller 51, and a flange 1012 that protrudes outward from one end in the axial direction of the cylindrical portion 1011 over the entire circumference. The sandwiching plate 102 has an annular shape and faces the flange 1012 through the base 510. The hub 101 and the sandwiching plate 102 are attached to the base 510 by a plurality of mounting bolts 103 and a plurality of nuts 104 corresponding one-to-one to the plurality of mounting bolts 103. The inner metal fitting 106 includes a ring-shaped inner ring portion 1061 and a flange 1062 protruding outward from the first end in the axial direction of the inner ring portion 1061. The inner diameter of the inner ring portion 1061 is substantially constant. The outer diameter of the inner ring portion 1061 gradually decreases as it moves away from the flange 1062 in the axial direction. The inner ring portion 1061 has a plurality of grooves formed along the axial direction from the end surface on the second end side in the axial direction. In the inner metal fitting 106, the inner ring portion 1061 is arranged inside the outer metal fitting 105. The outer diameter of the outer metal fitting 105 is substantially constant. The inner diameter of the outer metal fitting 105 gradually decreases as the distance from the flange 1062 increases in the axial direction of the inner metal fitting 106. The outer metal fitting 105 has a C-shape substantially the same as an annular shape, and has a first end surface and a second end surface facing each other in the circumferential direction, and the first end surface and the second end surface are close to each other. . The inner metal fitting 106 is attached to the outer metal fitting 105 by a plurality of bolts 107 each inserted through the flange 1062. The second rotating shaft 43 of the motor 4 is inserted through the inner metal fitting 106. In the coupling device 100, each of the plurality of bolts 107 is tightened, whereby the inner ring portion 1061 of the inner metal fitting 106 is pressed against the outer circumferential surface of the second rotating shaft 43, and the outer circumferential surface of the outer metal fitting 105 is the hub 101. It is pressed against the inner peripheral surface of the cylindrical portion 1011. Thereby, in the separation apparatus 1, the second rotating shaft 43 of the motor 4 and the propeller 51 are connected. In the coupling device 100, the second rotating shaft 43, the outer metal fitting 105, and the inner metal fitting 106 can be detached from the hub 101 by loosening each of the plurality of bolts 107.

  By providing the airflow control member 5 in the separation device 1 of the present embodiment, it is possible to improve the separation performance as compared with the separation device described in Patent Document 1 and the separation device of the comparative example.

  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.

  As is clear from the above-described embodiment, the separation device 1 includes an outer cylinder 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 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. The rotating body 3 has a first end 31 on the inlet 23 side and a second end 32 on the outlet 24 side, and an opening 34b at the second end 32. The separation device 1 further includes an airflow control member 5. The airflow control member 5 is located on the opposite side of the second end 32 of the rotating body 3 from the first end 31 side of the rotating body 3 and controls the airflow.

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

  In the separation device 1, the airflow control member 5 is configured to rotate together with the rotating body 3. Thereby, in the separation apparatus 1, it becomes possible to suppress generation | occurrence | production of a turbulent flow by the airflow control member 5, and aim at the further improvement of the performance which isolate | separates and collects the solid contained in gas from gas. It becomes possible.

  In this separating apparatus 1, the motor 4 is a biaxial motor, and includes a first rotating shaft 42 connected to the rotating body 3 and a second rotating shaft 43 positioned on the opposite side of the rotating body 3 side. Have. The airflow control member 5 is connected to the second rotating shaft 43 of the motor 4. Thereby, in the separation apparatus 1, it becomes possible to suppress generation | occurrence | production of a turbulent flow.

  In the separation device 1, the airflow control member 5 has a propeller 51 including a plurality of rotating blades 511. Thereby, in the separation apparatus 1, it becomes possible to suppress generation | occurrence | production of a turbulent flow more in the separation apparatus 1, and aim at the further improvement of the performance which isolate | separates and collects the solid contained in gas from gas. Is possible.

  The separation device 1 preferably further includes a collector 6. The collector 6 is arranged outside the outer cylinder 2 so as to cover the discharge hole 25, and the internal space of the collector 6 is connected to the discharge hole 25. Thereby, in separation device 1, it becomes possible to aim at improvement in the performance which separates and collects the solid contained in gas from gas.

  Separately from the shaft 7 (hereinafter also referred to as the first shaft 7) connected to the first rotating shaft 42 of the motor 4, the separating device 1 is connected to the second rotating shaft 43 of the motor 4 by a shaft coupling or the like. Two shafts may be provided. In this case, the airflow control member 5 may be connected to the second rotating shaft 43 by connecting the airflow control member 5 to the second shaft.

(Embodiment 2)
Hereinafter, the separation device 1b of the present embodiment will be described with reference to FIGS.

  The basic configuration of the separation device 1b of the present embodiment is substantially the same as that of the separation device 1 of the first embodiment. Regarding the separation device 1b of the present embodiment, the same components as those of the separation device 1 of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  In the separation device 1b of this embodiment, the airflow control member 5 includes a plurality of second rotary blades 521 different from the plurality of rotary blades 511 of the propeller 51 (hereinafter also referred to as first rotary blades 511), and a plurality of first It differs from the separation device 1 of the first embodiment in that it further includes a reversing mechanism 80 for rotating the two rotary blades 521 in the direction opposite to the plurality of first rotary blades 511. That is, the airflow control member 5 in the separation device 1b of the present embodiment includes the propeller 51, the plurality of second rotary blades 521, and the reversing mechanism 80. The second rotor blade 521 is a twist blade having a twist direction opposite to that of the first rotor blade 511.

  In the separation device 1b of the present embodiment, the distance between the rotating body 3 and the second rotating blade 521 is greater than the distance between the rotating body 3 and the first rotating blade 511 in the direction along the rotation center axis 30 of the rotating body 3. Too long. Thereby, in the separation apparatus 1b of the present embodiment, it is possible to suppress the occurrence of turbulent flow near the tips of the plurality of first rotary blades 511 of the propeller 51, and to further suppress the generation of turbulent flow. Is possible.

  As shown in FIG. 10, the reversing mechanism 80 includes a sun gear 81 fixed to the second rotating shaft 43, a hollow cylindrical outer shaft 83 that houses a part of the second rotating shaft 43 and the sun gear 81, And a plurality of (three in the illustrated example) planetary gears 82 disposed around the sun gear 81 between the sun gear 81 and the outer shaft 83. On the inner peripheral surface of the outer shaft 83, a gear 831 is formed in which a plurality of planetary gears 82 are engaged. Each of the plurality of second rotary blades 521 is provided on the outer peripheral surface of the outer shaft 83. The plurality of second rotary blades 521 are preferably arranged at equal intervals in the circumferential direction of the outer peripheral surface of the outer shaft 83. A through hole through which the second rotation shaft 43 is inserted is formed in each of the first end and the second end in the axial direction of the outer shaft 83. The through hole is larger than the diameter of the second rotation shaft 43 so as not to prevent the rotation of the second rotation shaft 43.

  In the reversing mechanism 80, the rotation direction of the sun gear 81 is the same as the rotation direction of the second rotation shaft 43. On the other hand, the rotation direction of each of the plurality of planetary gears 82 and the outer shaft 83 is opposite to the rotation direction of the second rotation shaft 43. When the second rotating shaft 43 and the sun gear 81 rotate in the clockwise direction as indicated by an arrow B1 in FIG. 10 (the same direction as the arrow A1 in FIG. 6), for example, each of the planetary gears 82 is reversed. The sun gear 81 rotates counterclockwise as indicated by an arrow B2 in FIG. At this time, the outer shaft 83 is rotated counterclockwise by the plurality of planetary gears 82 as shown by an arrow B3 in FIG.

  In the separating device 1 b, during the rotation of the rotating body 3, the first rotating blade 511 rotates in the same direction as the rotating body 3, and the second rotating blade 521 rotates in the opposite direction to the first rotating blade 511. As a result, the separation device 1b can suppress the occurrence of turbulent flow near the tips of the plurality of first rotary blades 511 of the propeller 51, and can further suppress the generation of turbulent flow. .

(Embodiment 3)
Hereinafter, the separation device 1c of the present embodiment will be described with reference to FIG.

  The basic configuration of the separation device 1c of the present embodiment is substantially the same as that of the separation device 1 of the first embodiment. Regarding the separation device 1c of the present embodiment, the same components as those of the separation device 1 of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The separation device 1 c of this embodiment is different from the separation device 1 of Embodiment 1 in that the airflow control member 5 includes a spinner 55.

  The spinner 55 is connected to the second rotating shaft 43 of the motor 4. Here, the second rotating shaft 43 of the motor 4 is integrally provided with a threaded portion 431 at the tip. The outer diameter of the threaded portion 431 is smaller than the outer diameter of other portions of the second rotating shaft 43. The spinner 55 is conical and has a bottom surface 551. Here, the conical shape is not limited to a case where the generatrix is a straight line, but may be a curve close to a straight line. The diameter of the bottom surface 551 of the spinner 55 is smaller than the inner diameter of the rotating body 3. The spinner 55 is disposed such that the bottom surface 551 is on the rotating body 3 side. The spinner 55 has a screw hole 552 into which the screw portion 431 of the second rotation shaft 43 is fitted in the bottom surface 551. In the separation device 1 c, the screw portion 431 of the second rotation shaft 43 is fitted into the screw hole 552 of the spinner 55, so that the separation device 1 c is detachably connected to the second rotation shaft 43.

  Separately from the shaft 7 connected to the first rotating shaft 42 of the motor 4 (hereinafter also referred to as the first shaft 7), the separating device 1c is connected to the second rotating shaft 43 of the motor 4 by a shaft coupling or the like. The spinner 55 may be connected to the second rotating shaft 43 by providing two shafts and connecting the spinner 55 to the second shaft.

  In the separation device 1c, the airflow control member 5 includes the spinner 55, so that it is possible to suppress the occurrence of turbulence with a simple configuration.

  Hereinafter, the separation device 1d according to the first modification of the present embodiment will be described with reference to FIG.

  In the separation device 1d of the first modification, the motor 4 is a biaxial motor, as in the separation device 1c of the third embodiment, and is opposite to the first rotation shaft 42 located on the rotating body 3 side and the rotating body 3 side. And a second rotation shaft 43 located on the side. In the separation device 1d of the first modification, the airflow control member 5 includes the rotation plate 56 through which the second rotation shaft 43 of the motor 4 passes and the second rotation shaft 43 is connected. It differs from the device 1c. Regarding the separation device 1d of the first modification, the same components as those of the separation device 1c of the third embodiment are denoted by the same reference numerals and description thereof is omitted.

  The rotating plate 56 is formed in a disc shape, and the second rotating shaft 43 passes through the center thereof. The diameter of the rotating plate 56 is equal to or larger than the outer diameter of the rotating body 3 and smaller than the inner diameter of the outer cylindrical body 2. There is a gap between the outer peripheral surface of the rotating plate 56 and the inner peripheral surface of the exhaust duct 150. The rotating plate 56 rotates together with the second rotating shaft 43. More specifically, the rotating plate 56 rotates in the same direction as the second rotating shaft 43 at the same speed as the second rotating shaft 43.

  In the separation device 1d according to the first modified example, the airflow control member 5 includes the rotating plate 56, thereby suppressing a backflow from occurring in the flow path 200 between the outer cylindrical body 2 and the rotating body 3 with a simple configuration. Therefore, it is possible to improve the performance of separating and collecting the solid contained in the gas from the gas. The outer peripheral shape of the rotating plate 56 is not limited to a circular shape, and may be, for example, a square shape or a hexagonal shape.

  Hereinafter, the separation device 1e according to the second modification of the present embodiment will be described with reference to FIG.

  In the separation device 1e of the second modification, in the separation device 1e of the second modification, the airflow control member 5 is located on the side opposite to the rotation body 3 side of the motor 4 and has a plate 57 larger than the opening 34b of the rotation body 3. It is different from the separation device 1c of the third embodiment in that it includes. Regarding the separation device 1e of the second modification, the same components as those of the separation device 1c of the third embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In the separation device 1e of the second modification, the motor 4 is a biaxial motor, as in the separation device 1c of the third embodiment, and is opposite to the first rotation shaft 42 located on the rotating body 3 side and the rotating body 3 side. And a second rotation shaft 43 located on the side.

  The plate 57 is formed in a disc shape, and a hole 571 is formed in the center thereof. The diameter of the plate 57 is equal to or larger than the outer diameter of the rotating body 3 and smaller than the inner diameter of the outer cylindrical body 2. There is a gap between the outer peripheral surface of the plate 57 and the inner peripheral surface of the exhaust duct 150. Further, the plate 57 has a hole 571 through which the second rotation shaft 43 of the motor 4 passes rotatably. The separation device 1 e of Modification 2 includes a bearing interposed between the hole 571 of the plate 57 and the second rotation shaft 43. This bearing supports the 2nd rotating shaft 43 rotatably. There may be a gap between the inner peripheral surface of the hole 571 of the plate 57 and the outer peripheral surface of the second rotating shaft 43. The plate 57 does not rotate. The separation device 1e according to the second modification includes a plurality of (for example, two) support columns (not shown) interposed between the plate 57 and the housing mounting portion 122 of the rear cover 12 (see FIG. 3B). Is fixed to the housing mounting portion 122, and the plate 57 is fixed to the other end of the column. Therefore, the plate 57 is supported by the housing 300 (see FIG. 5A) including the rear cover 12.

  In the separation device 1e according to the second modification, the airflow control member 5 includes the plate 57, so that the backflow is prevented from occurring in the flow path 200 between the outer cylindrical body 2 and the rotating body 3 with a simple configuration. Therefore, it is possible to improve the performance of separating and collecting the solid contained in the gas from the gas. The outer peripheral shape of the plate 57 is not limited to a circular shape, and may be, for example, a square shape or a hexagonal shape.

  Further, in the separation device 1e according to the second modification, the rotating body 3 can be rotated more stably by the motor 4 by providing a bearing interposed between the hole 571 of the plate 57 and the second rotating shaft 43. Is possible.

  However, in the separation device 1e of the modified example 2, a single-side motor having only the first rotating shaft 42 out of the first rotating shaft 42 and the second rotating shaft 43 may be adopted as the motor 4 instead of the double shaft motor. In this case, the hole 571 of the plate 57 may not be provided.

  The separation devices 1 b, 1 c, 1 d, and 1 d described above are arranged so as to cover the discharge hole 25 on the outside of the outer cylindrical body 2, similarly to the separation device 1, and further include a collector 6 whose internal space is connected to the discharge hole 25. It is preferable to provide. Thereby, in separation device 1b, 1c, 1d, and 1d, it becomes possible to aim at improvement in the performance which separates and collects the solid contained in gas from gas.

  The above first to third embodiments are only one of various embodiments of the present invention. The above-described first to third embodiments and the like can be variously changed depending on the design or the like as long as the object of the present invention can be achieved.

  For example, the propeller 51 may be a variable pitch propeller. In this case, in a separation system including the separation device 1 and a control device that controls the separation device 1, the control device may control the angle of the propeller of the variable pitch propeller according to the number of rotations of the motor 4. . The control unit device includes a microcomputer. The microcomputer is configured as a one-chip device including a processor that operates according to a program, a memory that stores a program that operates the processor, and a working memory. The control device can be realized by causing a microcomputer to execute a program.

  Further, in the separation devices 1, 1 b, 1 c, 1 d, and 1 e, the inner peripheral shape of the exhaust duct 150 is a circular shape, but is not limited thereto, and may be, for example, a square shape.

  Further, in the separation devices 1, 1 b, 1 c, 1 d, and 1 e, the plurality of blades 36 are connected only to the rotating body 3, but this is not a limitation. For example, in the separators 1 to 1d, as a configuration further including an inner cylinder disposed between the rotating body 3 and the outer cylinder 2, a plurality of blades 36 are coupled to both the rotating body 3 and the inner cylinder. May be.

  For example, 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.

  Each of the plurality of blades 36 may be formed in a spiral shape around the rotation center axis 30 of the rotating body 3. Here, the term “spiral” includes not only a spiral shape with a rotational speed of 1 or more, but also includes a part of a spiral shape with a rotational 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 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 separators 1, 1 b, 1 c, 1 d, and 1 e, 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, the separation devices 1, 1 b, 1 c, 1 d, and 1 e include a plurality of collectors 6, and the plurality of collectors 6 are arranged so as to correspond to the plurality of discharge holes 25 on a one-to-one basis. Good. 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. In the separation devices 1, 1b, 1c, 1d, and 1e, the collector 6 is not an essential component.

1, 1b, 1c, 1d, 1e Separator 2 Outer cylinder 20 Central shaft 21 First end 22 Second end 23 Inlet 24 Outlet 25 Discharge hole 3 Rotating body 30 Rotating center shaft 31 First end 32 Second end 34b Opening 36 Blade 4 Motor 42 First rotating shaft 43 Second rotating shaft 5 Airflow control member 51 Propeller 511 Rotating blade (first rotating blade)
521 Second rotor blade 55 Spinner 57 Plate 6 Collector 80 Inversion mechanism

Claims (8)

An 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,
The rotating body has a first end on the inlet side and a second end on the outlet side, and has an opening at the second end,
The separation apparatus further comprising an airflow control member that controls an airflow at a position opposite to the first end side of the rotating body at the second end of the rotating body. The separation apparatus according to claim 1, wherein the airflow control member is configured to rotate together with the rotating body. The motor is a double-axis motor, and includes a first rotating shaft connected to the rotating body, and a second rotating shaft located on the opposite side to the rotating body side,
The separation apparatus according to claim 2, wherein the airflow control member is connected to the second rotating shaft of the motor. The separation apparatus according to claim 3, wherein the airflow control member includes a propeller including a plurality of rotor blades. The airflow control member includes a plurality of second rotor blades different from the plurality of first rotor blades formed of the plurality of rotor blades, and the plurality of second rotor blades opposite to the plurality of first rotor blades. A reversing mechanism for rotating in the direction,
The separation according to claim 4, wherein a distance between the rotating body and the second rotating blade is longer than a distance between the rotating body and the first rotating blade in a direction along the rotation center axis. apparatus. The separation apparatus according to claim 3, wherein the airflow control member includes a spinner. The separation apparatus according to claim 1, wherein the airflow control member includes a plate that is located on a side opposite to the rotating body side of the motor and is larger than the opening of the rotating body. The separation according to any one of claims 1 to 7, further comprising a collector arranged so as to cover the discharge hole on the outside of the outer cylindrical body, and an internal space connected to the discharge hole. apparatus.

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