JP2018140339A - Separation system - Google Patents

Abstract

A separation system capable of improving the performance of separating and collecting a solid contained in a gas from the gas in a separation device. A separation system (100) includes a separation device (1) and a heating section (54). The separating device 1 has 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 arranged inside the outer cylindrical body 2 . A plurality of blades 36 are connected to the rotor 3 . The motor 4 rotates the rotating body 3 around the rotation center axis 30 . The heating part 54 is configured to heat the gas before it flows inside the outer cylindrical body 2 from the inlet 23 . [Selection drawing] Fig. 6

Description

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

  Conventionally, as a separation device provided in this type of separation system, for example, a rotor (rotary body), a plurality of flow paths, a blower, a drive device (motor), a discharge unit (discharge hole), and a collection Is 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.

International Publication No. 2016/092847

  In the field of separation systems, it is desired to further improve the performance of separating and discharging solids contained in a gas from the gas in the separation device.

  The objective of this invention is providing the separation system which can aim at the improvement of the performance which isolate | separates and discharges the solid contained in gas from gas in the separation apparatus.

  A separation system according to one embodiment of the present invention includes a separation device and a heating unit. The separation device 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, a gas outlet at a second end, and a discharge hole formed between the first end and the second end. . The rotating body is disposed inside the outer cylindrical body so that the rotation center axis 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 heating unit is configured to heat the gas before flowing into the outer cylinder from the inflow port.

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

FIG. 1A is a perspective view of a main part of a separation device provided in a separation system 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 a separation system according to an embodiment of the present invention. FIG. 7A is an exploded perspective view showing the outer cylinder body and the collector in the separation device provided in the separation system of 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. FIG. 8A is a front view of an air supply duct provided in a separation system according to an embodiment of the present invention. 8B is a cross-sectional view taken along line AA in FIG. 8A. FIG. 9 is an equivalent circuit diagram of the electric heating unit of the heating unit provided in the separation system. FIG. 10A is a front view of an air supply duct included in a separation system according to a modification of one embodiment of the present invention. 10B is a cross-sectional view taken along line BB in FIG. 10A.

(Embodiment)
Below, the separation system 100 of this embodiment is demonstrated based on FIG. As illustrated in FIG. 6, the separation system 100 according to the present embodiment includes a separation device 1 that separates solids in air (gas), and an air supply duct 51 that forms a flow path of a gas supplied to the separation device 1. And a heating unit 54 that heats the gas in the air supply duct 51.

  First, the configuration of the separation device 1 will be described.

The separation device 1 is provided, for example, on the upstream side of an air conditioning facility having a blowing function. 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 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. 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 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. 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). 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. The air supply duct 51 is provided on the upstream side of the separation device 1.

  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 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. 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 outer cylinder 2 includes a casing 10 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. 3A. In addition to the front cover 11, the rear cover 12, and the bottom cover 13, the housing 10 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 separation device 1 can apply a rotational force around the rotation center axis 30 to the air flowing into the flow path 200 (see FIGS. 2, 4, and 5) 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. 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. 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. 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.

  By the way, the separating apparatus 1 has a plurality (two in this embodiment) of partition walls 601 (FIGS. 2, 5, and 7A) 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 601 are arranged in the internal space of the collector 6. Each of the plurality of partition walls 601 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 601 is orthogonal to the direction parallel to the rotation center axis 30 of the rotating body 3 (that is, the angle between the partition wall 601 and the rotation center axis 30 is 90 degrees). Not exclusively. Each of the plurality of partition walls 601 may intersect, for example, in a range of 30 to 150 degrees in a direction parallel to the rotation center axis 30 of the rotating body 3.

  In the separation device 1 of the present embodiment, a plurality of partition walls 601 are arranged in the collector 6 and are arranged in a direction along the rotation center axis 30 of the rotating body 3. Thereby, in the separation apparatus 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 a plurality (two) of partition walls 601. . As an example, the plurality of partition walls 601 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 601 are disposed on the bottom wall 60 of the collector 6. Each front end surface 602 (see FIG. 7A) of each of the plurality of partition walls 601 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 end surface 602 of the plurality of partition walls 601 is the same as the curvature radius of the outer peripheral surface 28 of the outer cylindrical body 2. In the separation device 1, the partition wall 601 is integral with the collector 6. In the separation device 1, the material of the collector 6 and the plurality of partition walls 601 is a synthetic resin, and the collector 6 and the partition walls 601 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. 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 200 (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 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.

  Next, the structure of the air supply duct 51 and the heating unit 54 will be described.

  As shown in FIGS. 6, 8 </ b> A, and 8 </ b> B, the air supply duct 51 is a pipe line that forms a flow path of gas (air) supplied to the separation device 1. The air supply duct 51 is provided on the opposite side of the front panel 16 of the separation device 1 from the front cover 11. The air supply duct 51 is configured such that the internal space is connected to the inlet 23 of the outer cylindrical body 2 through the air holes 161 of the front panel 16 and the space inside the first frame portion 111 of the front cover 11. . The air supply duct 51 includes a duct body portion 52 and a duct flange portion 53.

  The duct main body 52 is formed in a hollow cylindrical shape having both ends opened, and forms a linear flow path through which a gas can flow. The inner diameter of the duct main body 52 is substantially the same as the inner diameter of the vent hole 161 of the front panel 16 and is, for example, 150 mm. The material of the duct main body 52 is a resin having electrical insulation.

  The duct flange portion 53 is formed so as to protrude outward from one end 521 of the duct body portion 52. The outer peripheral shape of the duct flange portion 53 is a square shape. The duct flange portion 53 is disposed so as to overlap the front panel 16 so that the center axis 520 of the duct main body 52 is aligned with the center axis 20 of the outer cylinder 2, and is fixed to the front panel 16 by a plurality of screws.

  The heating unit 54 is provided in the internal space of the duct main body 52 in the air supply duct 51, and is configured to heat the gas (air) in the internal space of the duct main body 52. The heating unit 54 has a plurality of heating wires 55 that generate heat when energized. The material of the heating wire 55 is an electric heating alloy such as a nickel chromium alloy.

  The plurality of heating wires 55 constitutes an heating unit 550 by being knitted in a lattice network. The electric heating unit 550 is formed by a plurality of heating wires 55 so that the outer peripheral shape and each mesh are square. FIG. 9 shows an equivalent circuit diagram of the electric heating unit 550. The electric heating unit 550 is equivalent to a bridge connection circuit of a plurality of resistance elements R1 by knitting a plurality of heating wires 55 in a lattice network. The number of closed circuits composed of the four resistance elements R1 in the bridge connection circuit corresponds to the number of meshes of the electric heating unit 550. The number of resistance elements R1 shown in FIG. 9 is an example for explaining an equivalent circuit of the electric heating unit 550. The electric heating unit 550 includes a first terminal portion 551 that is one end of the bridge connection circuit, and a second terminal portion 552 that is the other end of the bridge connection circuit. The first terminal portion 551 and the second terminal portion 552 are electrically connected to a power supply device 540 provided outside the duct body portion 52. The plurality of heating wires 55 constituting the electric heating unit 550 generate heat due to the current supplied from the power supply device 540. The power supply device 540 may be a DC power supply device that outputs a DC current, or may be an AC power supply device that outputs an AC current.

  The electric heating unit 550 is configured so that one surface along the plurality of heating wires 55 knitted in a lattice network intersects with the flow path direction of the duct main body 52 (in the present embodiment, orthogonal). Located in the internal space. In other words, each of the plurality of heating wires 55 is provided so as to intersect the flow path direction in the internal space of the duct main body 52. The “flow path direction” is a direction along the flow path formed by the duct main body 52.

  The electric heating unit 550 is held in the internal space of the duct main body 52 by fitting four corners into four recesses 522 formed on the inner peripheral surface of the duct main body 52. Of the four recesses 522, two recesses 522 may be provided with electrodes that are electrically connected to the power supply device 540. Thereby, the electric heating unit 550 and the power supply device 540 can be electrically connected by fitting the electric heating unit 550 into the four recesses 522.

  In the electric heating unit 550, the plurality of heating wires 55 generates heat due to the current supplied from the power supply device 540, and heats the gas in the internal space of the duct main body 52 in the air supply duct 51. That is, in the internal space of the duct main body 52 of the air supply duct 51, the gas (air) flowing along the flow path direction of the duct main body 52 is heated when passing through the electric heating unit 550.

  In addition, the heating unit 54 of the present embodiment includes a plurality of electric heating units 550. The plurality of electric heating units 550 are arranged side by side along the flow path direction of the duct body 52 in the internal space of the duct body 52. The plurality of electric heating units 550 are electrically connected in parallel between the output ends of the power supply device 540.

The flow rate of air flowing through the air supply duct 51 is, for example, 100m ³ / h~300m ³ / h. Moreover, it is desirable that the heat generation temperature of the electric heating unit 550 (heating wire 55) during energization is set to a temperature at which the solid contained in the gas passing through the electric heating unit 550 can be dried. For example, the heat generation temperature of the electric heating unit 550 during energization is preferably 60 ° C. to 300 ° C., more preferably 100 ° C. or more, and further preferably 110 ° C. to 200 ° C. Further, the interval between two electric heating units 550 adjacent in the flow passage direction of the air supply duct 51 may be set so that the temperature of the gas flowing in the air supply duct 51 does not decrease between the two electric heating units 550. desirable. For example, the interval between the two electric heating units 550 is preferably a distance through which the gas flowing in the air supply duct 51 can pass within 0.5 seconds, and more preferably within 0.3 seconds. A distance that can pass within 0.1 seconds is more preferable. Further, the distance from the heating unit 54 (the most downstream electric heating unit 550) to the inlet 23 of the outer cylinder 2 in the separation device 1 is such that the temperature of the gas flowing in the air supply duct 51 is equal to the heating unit 54 and the inlet 23. It is desirable that it is set so as not to decrease between the two. For example, the distance from the heating unit 54 to the inflow port 23 is preferably a distance through which the gas flowing in the air supply duct 51 can pass within 0.5 seconds, and can be passed within 0.3 seconds. It is more preferable that the distance can pass within 0.1 seconds.

The inventors of the present application produced a separation device of a comparative example having a discharge hole near the outlet as in the separator described in Patent Document 1, and prepared a test powder having a particle size equivalent to PM2.5. An experiment was conducted to measure the separation characteristics of solids. 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 frame. And, as a reason why it is difficult to further improve the separation performance in the separation apparatus of the comparative example, the inventors of the present application peel off the solid aggregate itself attached to the inner peripheral surface and the like of the frame body, and flow downstream. It was considered that the solid re-scatters from the solid aggregate adhered to the inner peripheral surface of the frame. Further, the inventors of the present application have considered that the more moisture that is adsorbed on the solid, the easier the solid adheres to the inner peripheral surface of the frame.

  On the other hand, in the separation system 100 of the present embodiment, the gas before flowing into the inner side of the outer cylinder 2 of the separation device 1 is heated by the heating unit 54 on the upstream side of the separation device 1 and is included in this gas. The solid that is dry. That is, the heating unit 54 dries the solid contained in the gas by heating the gas.

  In the separation device 1 of the present embodiment, the solid contained in the gas flowing into the separation device 1 is dried (less moisture adsorbed on the solid) compared to the separation device of the comparative example. Solids are less likely to adhere and deposit on the inner peripheral surface 27 of the cylindrical body 2, the plurality of blades 36, and the like. Thereby, in the separation system 100 of the present embodiment, the separation device 1 can improve the performance of separating the solid contained in the gas from the gas and discharging the solid from the discharge hole 25. Further, in the separation system 100 of the present embodiment, it is possible to reduce the frequency of maintenance for removing the solid adhered to the inner peripheral surface 27 of the outer cylinder 2 and the plurality of blades 36 in the separation device 1. . Moreover, since the heating part 54 is the structure which heats gas with the heating wire 55 provided so that it may cross | intersect a flow path direction in the internal space of the air supply duct 51, it heats gas, suppressing the raise of a pressure loss. It becomes possible to do.

  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 a modification of the separation system 100, as shown in FIGS. 10A and 10B, the heating unit 54A heats the porous body 56 disposed in the internal space of the duct main body 52 of the air supply duct 51, and the porous body 56. And a heater 59.

  The porous body 56 is a so-called honeycomb pipe, and includes one first pipe 57 and a plurality of (seven in this embodiment) second pipes 58 disposed inside the first pipe 57. Yes. The material of the porous body 56 is, for example, a metal such as aluminum or stainless steel.

  The first pipe 57 is a straight pipe having both ends opened in a circular shape. The first pipe 57 is disposed in the internal space of the duct main body 52 so that the central axis is along the flow path direction of the duct main body 52. That is, the first pipe 57 has a through hole 571 along the flow path direction of the duct main body 52.

  The second pipe 58 is a straight pipe having both ends opened into a regular hexagon. The second pipe 58 is disposed in the internal space of the first pipe 57 so that the central axis is along the flow path direction of the duct main body 52. That is, the second pipe 58 has a through hole 581 along the flow path direction of the duct main body 52. In the present embodiment, the first pipe 57 is accommodated so as to bundle seven second pipes 58. Specifically, the seven second pipes 58 are accommodated in the first pipe 57 so that the end surfaces of the seven second pipes 58 are arranged in a honeycomb arrangement when viewed from the flow path direction of the duct main body 52. ing. The side wall of the second pipe 58 is in contact with the adjacent second pipe 58. The first pipe 57 has an inner peripheral surface in contact with the side wall of the second pipe 58. Thereby, the first pipe 57 and the seven second pipes 58 are thermally coupled.

  The heater 59 includes a heating wire that generates heat when energized, and an insulator (for example, ceramic) that incorporates the heating wire and has electrical insulation. The heating wire is electrically connected to a power supply device provided outside the duct main body 52, and generates heat by current supplied from the power supply device. The insulator is disposed so as to cover the outer peripheral surface of the first pipe 57 along the circumferential direction and to be in contact with the outer peripheral surface of the first pipe 57.

  The heater 59 heats the first pipe 57 when the heating wire generates heat. The first pipe 57 and the second pipe 58 are made of metal, and heat from the heater 59 is efficiently transmitted to the second pipe 58 accommodated in the first pipe 57. That is, the entire porous body 56 is heated by the heater 59. By heating the porous body 56, the gas inside the through hole 571 of the first pipe 57 and the gas inside the through hole 581 of each second pipe 58 are heated. That is, in the internal space of the duct main body 52 of the air supply duct 51, the gas (air) flowing along the flow path direction of the duct main body 52 flows through the through holes 571 of the first pipe 57 and the second pipes 58. Heated when passing through the through hole 581.

  Since the porous body 56 includes a plurality of through-holes (through-holes 571 and a plurality of through-holes 581), the contact area with the gas is increased and the gas is heated more efficiently than in the case of one through-hole. It becomes possible to do. Further, since the porous body 56 is disposed so that the end surfaces of the first pipe 57 and the plurality of second pipes 58 intersect the flow path direction of the air supply duct 51, the pressure loss in the porous body 56 is increased. It becomes possible to suppress.

  The opening shape of the second pipe 58 is not limited to a regular hexagon, and may be, for example, a polygon or a circle different from the regular hexagon. Further, the number of the second pipes 58 accommodated by the first pipe 57 is not limited to seven, and may be a plurality other than seven.

  Further, a heat insulating material may be provided between the duct main body 52 of the air supply duct 51 and the heater 59. As a result, the heater 59 is prevented from transmitting the generated heat to the duct main body 52, and can efficiently heat the porous body 56.

  Further, the first pipe 57 and the duct main body 52 of the air supply duct 51 may be configured integrally. In other words, a part of the air supply duct 51 may be composed of the porous body 56.

  In addition, the porous body 56 is not limited to a configuration including a plurality of pipes. For example, the porous body 56 has a configuration in which a plurality of through holes along the flow channel direction are formed in a wall that closes the flow channel formed by the duct main body 52. There may be. In this case, in order to suppress an increase in pressure loss in the porous body 56, the porous body 56 is formed in a regular hexagonal shape in each of the plurality of through holes, and the plurality of through holes are arranged in a honeycomb arrangement on the end face of the wall body. It is preferable that it is comprised so that.

  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 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.

  As is clear from the above-described embodiment, the separation system 100 according to the first aspect includes the separation device 1 and the heating unit 54 (54A). 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 outer cylinder 2 has a discharge hole 25 formed between the first end 21 and 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 heating unit 54 (54A) is configured to heat the gas before flowing into the outer cylinder 2 from the inlet 23.

  With the above configuration, the separation system 100 can improve the performance of separating the solid contained in the gas from the gas and discharging it in the separation device 1.

  The separation system 100 according to the second aspect further includes an air supply duct 51 whose internal space is connected to the inlet 23 of the outer cylindrical body 2 in the first aspect. The heating unit 54 (54A) is configured to heat the gas flowing in the air supply duct 51. Thereby, in the separation system 100, the gas before flowing into the inner side of the outer cylinder 2 can be efficiently heated, and in the separation device 1, the solid contained in the gas is separated from the gas and discharged. Can be further improved.

  In the separation system 100 according to the third aspect, in the second aspect, the heating unit 54 (54A) is provided in the internal space of the air supply duct 51. Thereby, in the separation system 100, the gas before flowing into the inner side of the outer cylinder 2 can be efficiently heated, and in the separation device 1, the solid contained in the gas is separated from the gas and discharged. Can be further improved.

  In the separation system 100 according to the fourth aspect, in the second or third aspect, the heating unit 54 includes a heating wire 55 that generates heat when energized. The heating wire 55 is provided in the internal space of the air supply duct 51 so as to intersect the flow path direction of the air supply duct 51. Accordingly, in the separation system 100, the heating unit 54 can heat the gas while suppressing an increase in pressure loss.

  In the separation system 100 according to the fifth aspect, in the second or third aspect, the heating unit 54 </ b> A includes the porous body 56. The porous body 56 is formed with a plurality of through holes 571 and 581 penetrating along the flow passage direction of the air supply duct 51, and heats the gas inside the plurality of through holes 571 and 581. Accordingly, in the separation system 100, the heating unit 54A can efficiently heat the gas.

DESCRIPTION OF SYMBOLS 1 Separator 100 Separation system 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 36 Blade 4 Motor 51 Air supply duct 54, 54A Heating section 55 Heating wire 56 Porous body 571, 581 Through hole

Claims (5)

A separation system comprising a separation device and a heating unit,
The separation device includes:
An outer cylinder having a gas inlet at the first end, a gas outlet at the second end, and having a discharge hole formed between the first end and 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,
The said heating part is comprised so that the gas before flowing in into the said outer cylinder from the said inflow port may be heated. Separation system characterized by the above-mentioned. An air supply duct that further connects an internal space with the inlet of the outer cylinder,
The separation system according to claim 1, wherein the heating unit is configured to heat a gas flowing in the air supply duct. The separation system according to claim 2, wherein the heating unit is provided in an internal space of the air supply duct. The heating unit has a heating wire that generates heat when energized,
The separation system according to claim 2 or 3, wherein the heating wire is provided so as to intersect a flow direction of the air supply duct in an internal space of the air supply duct. The said heating part has the porous body which the some through-hole penetrated along the flow path direction of the said air supply duct is formed, and heats the gas inside these through-holes. The separation system according to 2 or 3.

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