WO2014141614A1 - Dispositif de dépoussiérage et dispositif d'épuration de l'air utilisant ce dispositif - Google Patents

Dispositif de dépoussiérage et dispositif d'épuration de l'air utilisant ce dispositif Download PDF

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Publication number
WO2014141614A1
WO2014141614A1 PCT/JP2014/001087 JP2014001087W WO2014141614A1 WO 2014141614 A1 WO2014141614 A1 WO 2014141614A1 JP 2014001087 W JP2014001087 W JP 2014001087W WO 2014141614 A1 WO2014141614 A1 WO 2014141614A1
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WIPO (PCT)
Prior art keywords
dust
air
cylindrical casing
dust collector
inlet
Prior art date
Application number
PCT/JP2014/001087
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English (en)
Japanese (ja)
Inventor
健吾 中原
秀直 平沢
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2013153469A external-priority patent/JP6405518B2/ja
Priority claimed from JP2013171034A external-priority patent/JP6225329B2/ja
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to CN201480014939.1A priority Critical patent/CN105007793B/zh
Priority to EP14764800.0A priority patent/EP2974641B1/fr
Publication of WO2014141614A1 publication Critical patent/WO2014141614A1/fr
Priority to HK16104069.0A priority patent/HK1216292A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
    • B04C3/06—Construction of inlets or outlets to the vortex chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/183—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by centrifugal separation, e.g. using vortices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
    • B04C2003/006—Construction of elements by which the vortex flow is generated or degenerated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering

Definitions

  • the present invention relates to a dust collector that separates and collects dust by swirling dust-containing air, and an air purification device using the dust collector.
  • This type of dust collector is generally called a cyclone system, and uses centrifugal force to separate dust and dust contained in the air to obtain clean air.
  • clean air here is the air where the density
  • the cylindrical casing 101 constituting the conventional dust collector is provided with a cylindrical air flow inlet 102 at one end and a cylindrical air flow outlet 103 at the other end.
  • a spiral blade 104 for swirling air is provided inside the casing 101, and a dust outlet 105 for discharging dust separated from the dust-containing air is provided on the outer peripheral surface of the casing 101.
  • the conventional dust collector has a dust storage unit 106 that is connected to the dust outlet 105 and stores dust.
  • Patent Document 2 Japanese Patent Document 2
  • a cylindrical casing 107 constituting a conventional dust collector is provided with an airflow inlet 108 extending in a tangential direction on the side surface on the upstream side, and the axial direction of the casing 107 on the downstream side.
  • An air flow outlet 109 is provided for discharge.
  • a dust outlet 110 for discharging dust separated from the dust-containing air from the casing 107 is provided on the outer peripheral surface of the casing 107 on the airflow outlet 109 side.
  • this conventional dust collector has a dust storage part 111 which is connected to the dust outlet 110 and stores dust.
  • dust-containing air flows into the casing 101 in the same direction as the axial direction of the casing 101 from the cylindrical airflow inlet 102. Thereafter, the air flow of the dust-containing air is bent nearly 90 ° by the spiral blade 104 provided in the casing 101, and advances in the axial direction of the casing 101 while turning along the side surface of the spiral blade 104 and the casing 101.
  • This configuration has the problem that the pressure loss increases because the direction of the airflow changes at the inlet.
  • the airflow inlet 102 becomes the lower surface, so that if it is installed as it is, the airflow inlet 102 is blocked. For this reason, it was necessary to make the inflow surface of the airflow inlet 102 horizontal by using an L-shaped joint or the like. For this reason, it was necessary to connect an extra part and had the subject that a size would become large as a dust collector.
  • a portion from the cylindrical airflow inlet 102 to the spiral blade 104 that is, a portion where the airflow is bent near 90 ° is narrower than the airflow inlet 102 portion. This also contributed to an increase in pressure loss.
  • the dust-containing air flows in from the tangential direction of the cylindrical casing 107 and flows along the outer peripheral surface of the casing 107, so that the dust-containing air swirls, It proceeds in the axial direction and flows to the air flow outlet 109.
  • the conventional dust collector has a problem that a member for preventing the airflow inlet from being blocked is required and the overall size is increased.
  • the conventional dust collector has a problem that the pressure loss increases by changing the direction of the airflow at the inlet.
  • the present invention provides a dust collector that has a low pressure loss and can be downsized, and an air purifier using the dust collector.
  • the dust collector of the present invention includes an eddy current generating unit that is installed in an air blowing path for dust and that generates eddy currents, and a dust collecting chamber that collects and collects dust separated by the eddy current generating units.
  • the vortex generating unit includes an air inlet provided at one end on the upstream side of air flowing in the air passage, an air outlet provided at the other end on the downstream side of air flowing in the air passage, and an opening of the dust collecting chamber And a cylindrical casing having a dust discharge port provided on the outer peripheral portion connected to.
  • the eddy current generating unit includes a spiral turning promotion surface formed around a central axis passing through the center of the cylindrical casing provided on the upstream side of the air flowing in the air passage of the cylindrical casing.
  • the inflow port is formed with two sides including the turning promotion surface and a part of the side wall of the cylindrical casing as the other side, and the surface of the inflow port and the discharge port are both parallel to the axial direction of the central axis. There is a relationship.
  • the surfaces of the inlet and the outlet are both parallel to the axial direction of the central axis, so that the inlet can be reduced in size without protruding from the cylindrical casing. be able to.
  • the dust collector of the present invention can greatly expand the inlet to the vicinity of the axis of the cylindrical casing without interference between the incoming airflow entering from the inlet and the swirling flow inside the cylindrical casing. . Thereby, the inflow speed of airflow is suppressed and pressure loss can be suppressed low.
  • the dust collector of the present invention smoothly moves from the airflow inlet to the swirl promoting surface without suddenly bending the air in the dust collector, the pressure loss can be kept low.
  • FIG. 1 is a configuration diagram of an air purification device according to a first embodiment of the present invention.
  • FIG. 2A is a perspective view of the dust collector in the first embodiment of the present invention.
  • FIG. 2B is a side view of the dust collector in the first embodiment of the present invention.
  • FIG. 3 is a perspective view of the vortex generating unit of the dust collector in the first embodiment of the present invention.
  • FIG. 4 is a configuration diagram of an air purification device according to the second embodiment of the present invention.
  • FIG. 5 is a perspective view of the dust collector in the second embodiment of the present invention.
  • FIG. 6 is a perspective view of the dust collector in the second embodiment of the present invention.
  • FIG. 7 is a configuration diagram of an air purification device according to the second embodiment of the present invention.
  • FIG. 8 is a perspective view of an essential part of the dust collecting apparatus according to the second embodiment of the present invention.
  • FIG. 9 is a cross-sectional view showing a conventional dust collector.
  • FIG. 1 is a configuration diagram of an air purification device according to a first embodiment of the present invention.
  • the air purification device 30 includes an air inlet 2 at a lower portion of a main body 1, an exhaust port 3 at an upper portion, and a dust collector 4, an air filter 5, a deodorizing filter 6, and a blower 7. It has.
  • the main body 1 is composed of a vertically long, substantially quadrangular prism-shaped casing 1a, a base 1b for allowing the air purification device 30 to stand by itself, and a column 1c connecting the casing 1a and the base 1b.
  • the air inlet 2 is covered with a grill with a gap provided around the dust collector 4 (not shown).
  • the housing shape of the air purification device 30 is a quadrangular prism shape, but is not limited thereto, and may be other shapes such as a cylindrical shape or a polygonal prism shape other than the quadrangular prism.
  • the air filter 5 is woven in a pleated shape, and has two rectangular shapes with a rectangular shape. Thereby, a large area of the filter medium can be obtained in a small space. With this configuration, the larger the area of the filter medium, the slower the wind speed passing through the filter medium, and the pressure loss can be kept low. Also, with this configuration, the increase in pressure loss due to dust accumulation can be moderated, so that the air filter 5 can be used for a long time.
  • the arrangement of the air filter 5 is not limited to a V-shape, and may be an inverted V-shape, a horizontal / vertical arrangement, or the like. Further, the shape of the air filter 5 may be a cylindrical shape. In the case of a cylindrical shape, it is conceivable that the flow of air flows from the outside to the inside of the cylinder, and the case where it flows from the inside to the outside.
  • the deodorizing filter 6 is disposed on the downstream side of the air filter 5, and granular activated carbon is adhered evenly around the aggregate that plays the role of maintaining the form as a filter. Due to the adsorption effect of the activated carbon, the odor source molecule is adsorbed and deodorized, and by using granular activated carbon, the surface area can be increased and the deodorizing effect is further enhanced.
  • the deodorizing filter 6 is not limited to activated carbon, and may have other configurations such as a catalyst. Further, the activated carbon itself may be a honeycomb.
  • the blower 7 uses a turbo fan, and wind blows out in the circumferential direction thereof, so that the air is discharged from the exhaust port 3 by changing to an upward wind by a guide 8 provided around the blower 7. Yes.
  • the blower 7 may be a sirocco fan or a mixed flow fan.
  • the dust collector 4 includes a vortex generating unit 10, a dust collecting chamber 11, and a connecting portion 12 that connects the two.
  • FIG. 1 although the dust collection chamber 11 is not shown, one is disposed in the lower part of the central portion of the air purification device 30, and eight eddy current generating units 10 surround the periphery.
  • the dust collection chamber 11 has eight dust inlets 20 communicating with the vortex generating unit 10 arranged on the outer periphery of the cylindrical shape, and a connecting part 12 for each of the dust inlets 20.
  • the eddy current generating unit 10 is connected via In FIG. 2A and FIG. 2B, only one vortex generating unit 10 is shown as a representative.
  • any number of eddy current generating units 10 may be connected to one dust collection chamber 11, but comprehensively determined from dust collection performance, pressure loss, power of the blower 7, noise, and the like. It is desirable to determine the number of eddy current generation units 10 to be used.
  • the lower part of the dust collecting chamber 11 is provided with a removable dust collecting tray 9.
  • the dust collection tray 9 has a structure in which the lower portion of the dust collection chamber 11 is divided, can be removed by sliding sideways, and accumulated dust can be easily discarded.
  • the vortex generating unit 10 includes a cylindrical casing 13, a spiral turning promotion surface 14, an outflow surface 15, and a rib 22.
  • the central axis 13a passing through the center of the cylindrical casing 13 is indicated by a one-dot chain line in FIG.
  • the cylindrical casing 13 is provided with a discharge port 16 serving as an opening for discharging dust on the outer peripheral surface on the downstream side (upper portion in FIG. 3).
  • the discharge port 16 is connected to the dust inlet 20 of the dust collecting chamber 11 through the connection portion 12 shown in FIGS. 2A and 2B.
  • the cylindrical casing 13 is cut along the turning promotion surface 14, and the upstream end surface of the cylindrical casing 13 and the turning promotion are promoted.
  • the outer periphery of the surface 14 is connected.
  • the turning promotion surface 14 is in a state where the upstream side of the cylindrical casing 13 is covered.
  • the opening formed by this configuration that is, the opening between the start end 14 a and the end end 14 b of the turning promotion surface 14 becomes the inlet 17 of the vortex generating unit 10.
  • the turning promotion surface 14 is a surface that is connected 360 degrees to the start end 14a and the end end 14b. Therefore, the inflow port 17 is a vertical plane where the start end 14a and the end end 14b overlap in plan view.
  • the turning promotion surface 14 may be a surface connected to the starting end 14a and the terminal end 14b by 360 degrees or more, and the inflow port 17 in that case is an opening formed between the starting end 14a and the turning promotion surface 14.
  • the turning promotion surface 14 is less than 360 degrees, and when the turning promotion surface 14 is viewed from the downstream side (upper side in FIG. 3) of the cylindrical casing 13, the gap between the start end 14a and the end end 14b is about several millimeters. May be present. By doing so, when the turning promotion surface 14 is manufactured with a mold, it is possible to take a draft for the molds to come into contact with each other at the inflow port 17 portion, thereby facilitating the manufacture.
  • the outflow surface 15 has an opening smaller than the inner diameter of the cylindrical casing 13, and this opening serves as an outlet 18 of the vortex generating unit 10.
  • the outflow surface 15 is formed so as to be perpendicular to the axis of the cylindrical casing 13, but this outflow surface 15 is, for example, gently toward the center on the upstream side (lower side in FIG. 3). May be inclined toward the side).
  • the rib 22 has a shape protruding from the opening end of the outlet 18 toward the upstream side, and the protruding length R of the rib 22 is 0.01 to 0.2 times the diameter ⁇ of the cylindrical casing 13.
  • the length is desirable, and in this embodiment, the protrusion length is 0.1 times.
  • This rib 22 becomes resistance when the swirling flow flows downstream through the outlet 18 and prevents resistance of dust contained in the swirling flow to the downstream side. It can be improved further. If the protruding length R exceeds 0.2 times the diameter ⁇ of the cylindrical casing 13, it becomes a resistance to the air current itself and increases the pressure loss. Note that dust can be collected without the rib 22.
  • the turning promotion surface 14 includes a center rod 19 joined to a spiral surface at the center thereof, and the strength of the turning promotion surface 14 is increased by the center rod 19 supporting the turning promotion surface 14 structurally.
  • the inflow port 17 has two sides including the turning promotion surface 14 and a part of the side wall of the cylindrical casing 13 as the other side, and the center rod 19 on the central axis 13 a passing through the center of the cylindrical casing 13 is connected to the other side. It consists of four sides.
  • the center rod 19 has a length from the start end 14a to the end end 14b of the turning promotion surface 14, but may extend from the starting end 14a of the turning promotion surface 14 to the outflow surface 15.
  • the diameter of the center rod 19 may be gradually increased from the terminal end 14 b of the turning promotion surface 14 to the outflow surface 15 toward the outflow surface 15.
  • the dust collection chamber 11 has a cylindrical shape, and includes a plurality of dust inlets 20 at the upper part of the outer peripheral surface thereof, and has a connecting portion 12 that protrudes from a part of the periphery of the dust inlet 20 to the outside of the dust collection chamber 11. .
  • the discharge port 16 of the vortex generating unit 10 is connected to the dust collecting chamber 11 via the connecting portion 12, and the dust separated by the vortex generating unit 10 flows into the dust collecting chamber 11 from the dust inlet 20 and is collected.
  • the shape of the dust collection chamber 11 is not limited to a cylinder, but may be a quadrangular prism shape, a polygonal prism shape, or the like.
  • the connecting part 12 is a member that connects the dust discharge port 16 of the vortex generating unit 10 and the dust inlet 20 of the dust collecting chamber 11, and the connecting part is connected without a gap so that there is no air leakage. Has been.
  • the air flow enters from the inlet 17, generates a swirling flow inside the vortex generating unit 10, and exits from the outlet 18.
  • dust particles or fibers having a weight floating in the air receives a centrifugal force from the center of the cylindrical casing 13 toward the outer circumference when swirling on the swirling flow.
  • the dust subjected to the centrifugal force moves toward the outer periphery of the cylindrical casing 13 and swirls around the outer periphery (near the inner wall surface of the cylindrical casing 13).
  • dust passes through the vicinity of the discharge port 16 provided on the outer peripheral surface of the cylindrical casing 13, since centrifugal force is acting on the dust, it jumps out from the discharge port 16 to the outside of the cylindrical casing 13 so as to go further outside.
  • the dust passes through the connecting portion 12 and enters the dust collecting chamber 11.
  • the inertial force at the time of turning also remains, and the dust continues to fly somewhat in the dust collection chamber 11, but falls in the dust collection chamber 11 by gravity.
  • the lower surface of the connecting portion 12 in FIG. 2B is inclined to the dust collection chamber 11, and the dust adhering to the inclined surface has a force toward the dust collection chamber 11 due to the inclination and gravity. Take it. Thereby, it is possible to suppress the dust in the dust collection chamber 11 from returning to the vortex generating unit 10 again even if there is some air in and out.
  • the dust is turning toward the downstream side (upper part in FIG. 3). If there is dust that is turning slightly in the center rather than in the vicinity of the inner wall surface of the cylindrical casing 13, the dust is not discharged from the discharge port 16. However, by providing the outflow surface 15, the dust collides with the outflow surface 15, and no more can move to the downstream side. Since the centrifugal force continues to act on the dust by turning, the dust moves toward the inner wall surface of the cylindrical casing 13 along the outflow surface 15 and moves from the discharge port 16 to the dust collecting chamber 11. For this reason, if the outflow surface 15 is provided, dust collection performance can be improved.
  • the outflow port 18 provided on the outflow surface 15 needs to be smaller than the inner diameter of the cylindrical casing 13. And the outflow port 18 is provided so that the center of the outflow port 18 of the outflow surface 15 may be on the central axis 13a of the cylindrical casing 13. This is a configuration for preventing dust that continues to turn even if it collides with the outflow surface 15 from coming out of the outlet 18.
  • the distance from the inner wall surface of the cylindrical casing 13 to the outlet 18 is similarly secured over the entire circumference of the outlet 18. be able to. Therefore, it is difficult for the dust that continues to turn to move to the outlet 18 against the centrifugal force, and the amount of dust that exits from the outlet 18 can be minimized. That is, dust collection performance can be improved.
  • the discharge port 16 should be provided downstream of the air inlet 17 (upper side of the inlet 17 in FIG. 3) in order to discharge as much dust as possible. This is because it takes time for dust to move to the inner wall surface side of the cylindrical casing 13 by centrifugal force. If the discharge port 16 is on the air inlet 17 side, the dust moves downstream from the position of the discharge port 16 before moving to the inner wall surface of the cylindrical casing 13, so that a large amount of dust cannot be discharged. .
  • the discharge port 16 is provided on the most downstream side of the cylindrical casing 13, that is, on the portion that contacts the outflow surface 15.
  • the axial distance D of the cylindrical casing 13 is the axial distance Ds of the inflow port 17, and the distance Du from the downstream end of the inflow port 17 to the outflow surface 15.
  • the distance Du is less than 0.9 with respect to the distance Ds, the space between the turning promotion surface 14 and the outflow surface 15 becomes narrow, and the pressure loss increases.
  • the distance Du is greater than 2 with respect to the distance Ds, the time for which the swirling flow contacts the wall surface of the cylindrical casing 13 becomes longer, the swirling flow becomes weak due to the contact resistance of the wall surface, and the dust collecting performance is reduced. End up. Therefore, when the distance Ds is 1 and the distance Du is 0.9 to 2, more preferably 1 to 1.5, the dust collection performance can be improved without increasing the pressure loss.
  • the inflow port 17 exists on the upstream side (lower part in FIG. 3) of the cylindrical casing 13 and inside the outer periphery of the cylindrical casing 13.
  • the flow of air entering the inflow port 17 is in a direction perpendicular to the inflow port 17 constituted by the start end 14 a and the end end 14 b of the turning promotion surface 14.
  • the turning promotion surface 14 draws a spiral surface while facing the downstream side (upper part in FIG. 3).
  • the air that has entered from the inflow port 17 is changed into a flow that smoothly turns by the inner wall of the cylindrical casing 13 while being smoothly changed to a flow toward the downstream side (upper part in FIG. 3) by the turning promotion surface 14. . That is, the flow of air that has entered from the inflow port 17 smoothly turns into a swirling flow having a directivity toward the downstream side.
  • the vortex generating unit 10 of the dust collector 4 in the present embodiment can keep the pressure loss low. Further, since the inflow port 17 does not protrude from the cylindrical casing 13 and is integrated with the turning promotion surface 14 and the cylindrical casing 13, an extra space for inflow and members constituting the same are required. Instead, the eddy current generating unit 10 can be reduced in size.
  • the width of the inflow port 17 can be freely set and can be greatly widened toward the center rod 19 side. That is, the width of the inflow port 17 can be freely set by the diameter of the center rod 19. By reducing the diameter of the center bar 19 or not using the center bar 19, the width of the inflow port 17 can be increased. Thereby, since the area of the inflow port 17 becomes wide, a wind speed can be made slow and the pressure loss by inflow can be reduced.
  • a swirling flow is generated in the cylindrical casing 107.
  • This swirling flow is generated by connecting the air flow inlet 108 extending in the tangential direction to the upstream side surface of the casing 107.
  • the air that has entered from the airflow inlet 108 enters the casing 107 from the tangential direction, and swirls along the inner wall of the casing 107 as it is.
  • the air swirling in the casing 107 joins with air newly flowing in from the airflow inlet 108 and interferes with the air.
  • the vortex generating unit 10 having a small size and low pressure loss can be provided. Furthermore, the surfaces of the inflow port 17 and the discharge port 16 are both in a parallel relationship with the axial direction of the central shaft 13 a passing through the center of the cylindrical casing 13. For this reason, the airflow that has flowed in from the inlet 17 and has always turned into a swirling flow parallel to the central axis 13a proceeds in the axial direction of the cylindrical casing 13, and the dust is smoothly discharged from the outlet 16 on the downstream side. Is done.
  • the dust collector 4 in the present embodiment can be provided with a plurality of eddy current generating units 10 for one dust collection chamber 11. At that time, the dust collection chamber 11 is provided with a dust inlet 20 corresponding to each eddy current generation unit 10, and each is connected by the connecting portion 12.
  • the processing air volume can be increased without increasing the pressure loss by increasing the number of eddy current generation units 10 used.
  • the pressure loss can be reduced by processing the air using all eight. Can be suppressed.
  • the air volume as the air purification device 30 for example, when it is desired to operate at an air volume of 1/8 of the rated maximum air volume, if the seven eddy current generation units 10 are shielded so that no air flows, The amount of air flowing through one eddy current generating unit 10 is equivalent to the amount of air flow when the eight rated maximum air volumes are used.
  • the air purification apparatus 30 which can maintain the collection performance of the dust collector 4 can be provided in a wide air volume range.
  • the arrangement method of the plurality of eddy current generating units 10 with respect to one dust collection chamber 11 is not limited to the square arrangement along the inner wall of the housing 1a as shown in FIG. It may be arranged. Further, for example, when there are eight eddy current generating units 10, the shape may be 4 ⁇ 2 rows, and the dust collection chambers 11 may be elongated between the rows. Thus, the form of the dust collector 4 can be freely changed according to the shape of the air purification device 30.
  • the direction in which the swirling flow proceeds is not limited to the upward direction as described above.
  • the dust collector 4 in FIGS. 2A and 2B can be used upside down. In this case, it is necessary to provide a sufficient space for collecting dust from the dust inlet 20 of the dust collection chamber 11 toward the direction of gravity. Further, the dust collector 4 shown in FIG. 2A and FIG. Also in this case, it is necessary to provide a sufficient space for collecting dust from the dust inlet 20 toward the gravity direction. Thus, the dust collector 4 in this Embodiment can change the direction freely.
  • a dust collector 4 and a blower 7 disposed downstream of the dust collector 4 are installed inside the air passage 23 of the air purification device 30. An airflow is generated inside the air passage 23 by the blower 7, and the airflow passes through the dust collector 4.
  • the dust collector 4 includes a vortex generating unit 10 that swirls the passing air to centrifuge the dust, and a dust collection chamber 11 that collects and stores the separated dust.
  • the vortex generating unit 10 includes a cylindrical casing 13, a swirl promoting surface 14, an inlet 17, an outlet 18, an outlet 16, and an outlet 15.
  • the detailed structure is provided with a spiral turning promotion surface 14 for turning the air flow inside the cylindrical casing 13, and an inlet 17 for taking in air is provided at one end of the cylindrical casing 13.
  • the cylindrical casing 13 is provided with an outflow surface 15 formed with an outlet 18 at the other end, and a discharge port 16 for discharging dust to the dust collecting chamber 11 is provided at a side surface of the cylindrical casing 13.
  • each unit is provided with an opening / closing unit 25 that opens and closes the outlet 18 of the vortex generating unit 10 for each unit.
  • FIG. 5, FIG. 6, and FIG. 7 show an embodiment in which two units are formed by partitioning the dust collection chamber 11 with one partition plate 24.
  • FIG. 6 shows a state where the opening / closing unit 25 is opened in both units. Assuming that the rated air volume in this state is, for example, 200 m 3 / h, the air volume flowing through the vortex generating unit 10 in one unit is 100 m 3 / h.
  • the air volume of each vortex generating unit 10 is 50 m 3 / h, and the speed of the air current is halved. If the speed of the airflow decreases, the centrifugal force received by the dust in the airflow also decreases, leading to a decrease in dust collection efficiency.
  • the partition plate 24 prevents airflow from mixing between the left unit 26 a and the right unit 26 b. Therefore, air that has entered from the left inlet 17a exits the left outlet 16a, passes through the dust collecting chamber 11, enters the right vortex generating unit 10b from the right outlet 16b, and passes through the right outlet 18b. There is no route to go out.
  • either the left opening / closing unit 25a or the right opening / closing unit 25b By closing either the left opening / closing unit 25a or the right opening / closing unit 25b, either the left outlet 18a or the right outlet 18b is closed. By doing so, an air flow is generated only in one of the left vortex generating unit 10a of the left unit 26a and the right vortex generating unit 10b of the right unit 26b.
  • the entire air volume is reduced from 200 m 3 / h to 100 m 3 / h
  • one of the left opening / closing unit 25a and the right opening / closing unit 25b is closed in conjunction therewith. By doing so, the wind speed of the airflow passing through one of the left vortex generating unit 10a and the right vortex generating unit 10b is maintained, and the dust collection efficiency is not reduced.
  • the blower 7 is a blower fan or the like.
  • the blower 7 is drawn separately from the dust collector 4 in the blower passage 23.
  • the blower 7 only needs to generate airflow in the vortex generating unit 10 of the dust collector 4 shown in FIG. 5, and the dust collector 4 and the blower 7 may be integrated.
  • the outlet 18 of the vortex generating unit 10 is provided with an outflow surface 15 on the upper end surface of the cylindrical casing 13 so that the diameter thereof is smaller than the diameter of the cylindrical casing 13. That is, the opening on the inner peripheral side of the outflow surface 15 serves as the outflow port 18.
  • Dust in the air stream is discharged from the discharge port 16 to the dust collection chamber 11 while receiving a centrifugal force and turning near the inner wall surface of the cylindrical casing 13.
  • a part of the dust flows away from the outlet 18 due to the attractive force of the airflow.
  • the upper end surface of the cylindrical casing 13 is formed by the outflow surface 15 having an opening smaller than the diameter of the cylindrical casing 13.
  • the shape of the outlet 18 is determined by the shape of the outflow surface 15, but it is better to be circular considering the pressure loss of the airflow. Moreover, although the diameter of the outflow port 18 contributes to the improvement of dust collection efficiency, the pressure loss increases as the diameter decreases. Therefore, the designer determines an optimum diameter according to design factors such as the capacity of the blower 7 and the apparatus dimensions for realizing the set air volume and the set air speed in the vortex generator unit 10.
  • the opening / closing unit 25 may have any shape that can completely seal the outlet 18.
  • a combination with the hinge 29 is conceivable.
  • the shape of the dust collection chamber 11 is drawn as a rectangular parallelepiped in the figure, but it may be cylindrical.
  • the dust collector of the present invention is installed in an air blowing path containing dust, and collects and collects eddy current generating units that generate eddy currents and dust separated by the eddy current generating units. And a dust chamber.
  • the vortex generating unit includes an air inlet provided at one end on the upstream side of air flowing in the air passage, an air outlet provided at the other end on the downstream side of air flowing in the air passage, and an opening of the dust collecting chamber And a cylindrical casing having a dust discharge port provided on the outer peripheral portion connected to.
  • the eddy current generating unit includes a spiral turning promotion surface formed around a central axis passing through the center of the cylindrical casing provided on the upstream side of the air flowing in the air passage of the cylindrical casing.
  • the inflow port is formed with two sides including the turning promotion surface and a part of the side wall of the cylindrical casing as the other side, and the surface of the inflow port and the discharge port are both parallel to the axial direction of the central axis. I have a relationship. With this configuration, the inflow port exists on the inside of the outer peripheral surface of the cylindrical casing, and the inflow port does not have a structure protruding from the cylindrical casing. It can be downsized.
  • the inflow air flowing from the air inlet does not interfere with the swirling flow inside the cylindrical casing. Thereby, the inflow speed of airflow is suppressed and pressure loss can be suppressed low.
  • the air entering from the air inlet does not bend suddenly and smoothly moves from the inlet to the swirl promoting surface, it is possible to generate a swirl that is a vortex while keeping the pressure loss low.
  • centrifugal force is generated in the dust by the swirling flow, and the dust can be smoothly discharged from the discharge port.
  • the dust collector of the present invention may be provided with an outflow surface having an opening smaller than the inner diameter of the cylindrical casing at the other end on the downstream side.
  • the swirl promoting surface moves the dust-containing air to the downstream side while swirling, and the air is discharged from the opening provided on the outflow surface, but the swirling dust has its own weight.
  • the centrifugal force works and tries to go to the vicinity of the outer peripheral surface of the cylindrical casing.
  • the dust that has not yet moved to the vicinity of the outer peripheral surface of the cylindrical casing is blocked, and moves to the vicinity of the outer peripheral surface along the outflow surface by centrifugal force. For this reason, separation of air and dust coming out from the opening of the outflow surface is promoted, and dust collecting performance can be improved.
  • the axial distance D of the cylindrical casing is the sum of the axial distance Ds of the inlet and the distance Du from the downstream end of the inlet to the outlet surface.
  • the swirling flow generated by the swirl promoting surface can sufficiently continue swirling from one end on the downstream side of the inlet to the outflow surface, and the dust collecting performance can be improved.
  • the dust collector of the present invention may be configured to align the center of the opening of the outflow surface with the central axis portion of the cylindrical casing. This reduces the probability that dust swirling near the outer periphery of the cylindrical casing will encounter the opening of the outflow surface at any location in the circumferential direction, thus further improving separation of air and dust. Further, the dust collection performance can be further improved.
  • the dust outlet may be provided on the air outlet side of the air inlet.
  • the dust collector of the present invention may be provided with a dust outlet adjacent to the outflow surface.
  • the dust collides with the outflow surface, and the dust that has moved to the vicinity of the outer peripheral surface of the cylindrical casing along the outflow surface can easily enter the dust discharge port, thereby further improving the collection performance.
  • the air purification apparatus of the present invention is provided with a main body having an intake port and an exhaust port, a blower in the main body, and a dust collector of the present invention in a blower passage through which air is blown by the blower. Furthermore, the air purifying apparatus of the present invention is configured to take in air containing dust from the air inlet of the dust collector and blow out the air from which dust has been removed by the vortex generator of the dust collector from the exhaust port. Good.
  • the dust collector in the present invention is useful as a dust collector and an air purifier that separates and collects dust with a large amount of processing air flow because the device can be downsized and pressure loss can be kept low.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cyclones (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Abstract

L'invention concerne un dispositif de dépoussiérage pourvu d'une unité de production de tourbillonnement (10) placée dans un passage d'air, et d'une chambre de dépoussiérage, laquelle collecte et stocke la saleté et la poussière ayant été séparées au niveau de l'unité de production de tourbillonnement (10). L'unité de production de tourbillonnement (10) présente un boîtier cylindrique (13) possédant une entrée de flux d'air (17) disposée au niveau du côté amont du passage d'air, une sortie de flux d'air (18) disposée au niveau du côté aval dans le passage d'air, et une sortie d'éjection (16) pour la saleté et la poussière, qui est disposée sur la partie périphérique extérieure reliée à une ouverture de la chambre de dépoussiérage. En plus, l'unité de production de tourbillonnement (10) est pourvue d'une surface (14) favorisant la giration en spirale, laquelle favorise la giration de l'air, disposée au niveau du côté amont du passage d'air du boîtier cylindrique (13). De plus, l'entrée de flux d'air (17) est formée à partir des deux côtés comprenant la surface (14) favorisant la giration, et d'une partie de la paroi latérale du boîtier cylindrique (13) comme autre côté.
PCT/JP2014/001087 2013-03-13 2014-02-28 Dispositif de dépoussiérage et dispositif d'épuration de l'air utilisant ce dispositif WO2014141614A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201480014939.1A CN105007793B (zh) 2013-03-13 2014-02-28 集尘装置和使用其的空气净化装置
EP14764800.0A EP2974641B1 (fr) 2013-03-13 2014-02-28 Dispositif de dépoussiérage et dispositif d'épuration de l'air utilisant ce dispositif
HK16104069.0A HK1216292A1 (zh) 2013-03-13 2016-04-11 集塵裝置和使用其的空氣淨化裝置

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2013050037 2013-03-13
JP2013-050037 2013-03-13
JP2013153469A JP6405518B2 (ja) 2013-07-24 2013-07-24 集塵装置
JP2013-153469 2013-07-24
JP2013-171034 2013-08-21
JP2013171034A JP6225329B2 (ja) 2013-03-13 2013-08-21 集塵装置およびこれを用いた空気浄化装置

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WO2014141614A1 true WO2014141614A1 (fr) 2014-09-18

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CN (1) CN105007793B (fr)
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CN107822563B (zh) * 2017-12-01 2023-09-26 莱克电气股份有限公司 一种吸尘器二级旋风过滤尘杯
CN109224644B (zh) * 2018-09-29 2024-03-29 南京航空航天大学 轴流式除尘装置及方法

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JP2004129783A (ja) 2002-10-09 2004-04-30 Toshiba Tec Corp 電気掃除機
JP2007275867A (ja) * 2006-04-10 2007-10-25 Samsung Electronics Co Ltd サイクロン、サイクロン空気清浄機及びその空気清浄方法
JP2008173493A (ja) * 2008-02-25 2008-07-31 Sanyo Electric Co Ltd 電気掃除機
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See also references of EP2974641A4

Also Published As

Publication number Publication date
CN105007793B (zh) 2017-05-17
EP2974641A4 (fr) 2016-03-02
EP2974641A1 (fr) 2016-01-20
HK1216292A1 (zh) 2016-11-04
EP2974641B1 (fr) 2018-10-24
CN105007793A (zh) 2015-10-28

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