JP5423868B2 - Dust collector - Google Patents

Description

  The present invention relates to a cyclone type dust collector that separates and removes dust contained mainly in gas by centrifugal force.

  Conventionally, this type of cyclone type dust collector sucks a gas containing dust and generates a swirling flow inside to separate the dust by applying centrifugal force, and the air flow descends while swirling inside the device. A device that reverses at the lower part of the apparatus and flows out of the apparatus through a flow path inside the apparatus is known (for example, see Patent Document 1).

  Hereinafter, the cyclone dust collector will be described with reference to FIG.

  As shown in the figure, the dust collector 101 includes an outer cylinder 102, an inlet 103 connected in a tangential direction of the outer periphery thereof, a conical cylinder 104 connected below the outer cylinder 102, and a dust collection connected below the conical cylinder 104. The chamber 105 has an axis parallel to the axis of the outer cylinder 102, and includes an inner cylinder 106 connected to the upper surface of the chamber 105, and an exhaust port 107 communicating from the inner cylinder 106 to the outside of the dust collector. It flows into the cylinder 102 and descends while turning from the outer cylinder 102 to the conical cylinder 104. At that time, centrifugal force is applied to the dust contained in the gas, and the dust is separated to the outer peripheral side of the dust collecting device and falls into the dust collecting chamber 105. The gas from which the dust has been removed is sucked up from the lower surface of the inner cylinder 106 and discharged from the exhaust port 107.

JP 2002-177822 A

  Such a conventional cyclone type dust collector requires the axial length of the cyclone cylinder to some extent in order to obtain sufficient separation performance, and there is a problem that the apparatus size is large. In addition, if the outer cylinder and the dust collection chamber are directly connected with the conical cylinder omitted to reduce the size, the distance between the lower surface of the inner cylinder and the dust collection chamber becomes smaller, so the dust accumulated in the dust collection chamber Re-scatters, and a part of the air is sucked from the inner cylinder and discharged to the outside of the apparatus, resulting in a problem that the dust collection efficiency is lowered.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a cyclone dust collector in which the size of the device is reduced without reducing the dust collection efficiency.

  In order to achieve the above object, the dust collector of the present invention has an outer cylinder whose both end faces are closed, an intake port connected in a tangential direction of the outer periphery of the outer cylinder, and an axis parallel to the axis inside the outer cylinder. A cyclone-type dust collector comprising: an inner cylinder connected to one end face of the outer cylinder; and an exhaust port connected to the inner cylinder end face and communicating with the outside of the outer cylinder. An end face that is not connected to the outer cylinder is closed, and an opening for allowing gas to flow in is provided on the side face. The opening is partitioned by a rectifying member, and the rectifying member extends along a substantially circumference of the inner cylinder. A plurality of the cylinders are arranged on the closed surface of the inner cylinder, the closed surface of the inner cylinder and the rectifying member are integrated, and are formed so as to be detachable from the inner cylinder.

  With this configuration, it is possible to suppress the re-scattering of the accumulated dust due to the airflow, and it is possible to provide a cyclone dust collector with a reduced device size without lowering the dust collection efficiency.

  According to the present invention, an end surface of the inner cylinder of the cyclone type dust collector that is not connected to the outer cylinder is closed, and an opening for allowing gas to flow in is provided on the side surface, and the opening is partitioned by the rectifying member. The plurality of rectifying members are arranged on the closed surface of the inner cylinder along the substantially circumference of the inner cylinder, thereby suppressing re-scattering due to the flow of accumulated dust. It is possible to provide a cyclone dust collector with a reduced device size without lowering the dust collection efficiency.

The perspective view of the dust collector in Embodiment 1 of this invention The block diagram which shows the cross section cut along A-A 'of FIG. The block diagram which shows the cross section which cut FIG. 2 along B-B ' Graph of dust collection efficiency and pressure loss The perspective view of the dust collector which miniaturized the conventional cyclone type dust collector The block diagram which shows the cross section which cut | disconnected FIG. 5 along C-C ' The perspective view of the dust collector in the reference form 1 of this invention The block diagram which shows the cross section cut along D-D 'of FIG. The figure of a set of rectification members with which the dust collector in reference form 1 of the present invention was equipped A perspective view of a conventional cyclone type dust collector

  The invention according to claim 1 of the present invention has an outer cylinder whose both end faces are closed, an intake port connected in a tangential direction of the outer periphery of the outer cylinder, and an axis parallel to the axis inside the outer cylinder, A cyclone type dust collector comprising an inner cylinder connected to one end face of an outer cylinder and an exhaust port connected to the inner cylinder end face and leading to the outside of the outer cylinder, wherein the inner cylinder is connected to the outer cylinder The end face that is not connected is closed, and an opening for allowing gas to flow in is provided on the side surface. The opening is partitioned by a rectifying member, and the rectifying member extends along the substantially circumference of the inner cylinder. The dust collector is characterized in that a total of areas of openings arranged on a closed surface of a cylinder and partitioned by the rectifying member is equal to or smaller than a cross-sectional area of the inner cylinder.

  As a result, the swirling airflow swirling and descending the outer periphery inside the outer cylinder is sucked only from the opening on the side surface of the inner cylinder, so that the dust accumulated near the wall surface inside the outer cylinder due to the centrifugal force due to the swirling airflow The air flow that rolls up toward the center of the cylinder is reduced. As a result, re-scattering due to the airflow of accumulated dust can be suppressed. Therefore, it is possible to provide a cyclone dust collector with a reduced device size without reducing the dust collection efficiency. In addition, when the total area of the openings partitioned by the rectifying member is larger than the cross-sectional area of the inner cylinder, the force for sucking the gas swirling inside the outer cylinder becomes too large, and the dust contained in the gas The working centrifugal force is reduced, and as a result, the dust collection efficiency may be reduced. Therefore, the total area of the openings is preferably equal to or smaller than the cross-sectional area of the inner cylinder.

  The invention according to claim 2 of the present invention is the dust collector according to claim 1, wherein the rectifying member is formed of a flat plate oriented in the center direction of the inner cylinder.

  Thereby, when the airflow sucked into the inner cylinder while turning collides with the rectifying member, dust contained in the airflow can be captured, and dust collection efficiency can be improved. Moreover, since it is a member of a simple structure, the structure of a dust collector can be made simpler and manufacture etc. become easy.

  The invention according to claim 3 of the present invention is the dust collector according to claim 1, wherein the rectifying member is formed of a curved plate having a certain curvature.

  Thereby, when the airflow sucked into the inner cylinder while turning collides with the rectifying member, dust contained in the airflow can be captured, and dust collection efficiency can be improved. Moreover, by using a curved plate as the rectifying member, resistance to the airflow flowing into the inner cylinder can be reduced, and pressure loss can be reduced.

  The invention according to claim 4 of the present invention is the dust collector according to claim 3, wherein the convex surface of the curved plate is opposed to the gas flow direction in the outer cylinder.

  Thereby, when the airflow sucked into the inner cylinder while turning collides with the rectifying member, dust contained in the airflow can be efficiently separated to the outside, and dust collection efficiency can be improved.

  The invention according to claim 5 of the present invention is characterized in that the closed surface of the inner cylinder is formed so as to be convex toward the inner side of the inner cylinder. Device.

  Thereby, when gas is sucked into the inner cylinder, eddy current generated near the closed surface of the inner cylinder can be suppressed, and pressure loss can be reduced.

  The invention according to claim 6 of the present invention is characterized in that the outer cylinder is divided so that a part of the outer cylinder on which the collected dust is accumulated is detachable as a dust collection chamber. It is a dust collector in any one of 1 thru | or 5.

  Thereby, it becomes possible to remove the dust accumulated in the dust collection chamber, and it is possible to easily discard the dust and clean the inside of the apparatus.

  The invention according to claim 7 of the present invention is the dust collecting apparatus according to claim 6, wherein a handle is attached to the outer periphery of the dust collecting chamber.

  Thereby, the handle at the time of removing a dust collection chamber is formed, and handling can be made easier.

(Embodiment 1)
Embodiment 1 of the present invention will be described below with reference to the drawings.

  1 is a perspective view of a dust collecting apparatus according to Embodiment 1 of the present invention, FIG. 2 is a configuration diagram showing a cross section taken along the line AA ′ of FIG. 1, and FIG. It is a block diagram which shows the cross section cut along -B '.

  First, the structure of the dust collector in Embodiment 1 is demonstrated.

The dust collector 1 has an outer cylinder 2 whose both end surfaces are closed, an intake port 3 connected in a tangential direction of the outer periphery of the outer cylinder 2, and an axis parallel to the axis inside the outer cylinder 2, and one end face is closed. The other non-closed end surface is connected to one end surface of the outer cylinder 2 (ie, the upper surface of the outer cylinder 2), and the other end surface of the inner cylinder 4 is connected to the non-closed end surface (ie, the upper surface of the inner cylinder 4). On the closed surface of the inner cylinder 4 along the substantially circumference of the inner cylinder 4, the exhaust port 5 communicating with the outside of the outer cylinder 2, the opening 6 provided on the side surface of the inner cylinder 4, and the opening 6 are partitioned. It is a cyclone type dust collector provided with the baffle member 7 arranged in multiple numbers. The closed surface of the inner cylinder 4 is formed to be convex on the inner side. The rectifying member 7 is formed of a curved plate having a certain curvature, and its convex surface is opposed to the gas flow direction in the outer cylinder. The material of each part is a resin with excellent heat insulation properties, such as polystyrene, considering ventilation and air conditioning applications, but heat insulation material such as urethane foam is attached to the outer surface of metal or metal material. It doesn't matter.

  Next, the operation of the dust collector in Embodiment 1 will be described.

  When gas is introduced into the dust collector 1 by a blowing means (not shown), a swirling flow is generated in the outer cylinder 2. At this time, the dust contained in the gas also turns, so that centrifugal force is applied, the dust moves toward the outer peripheral wall of the outer cylinder 2, and finally the end surface of the outer cylinder 2 where the inner cylinder 4 is not connected (that is, the outer cylinder). 2) fall and deposit. The gas from which the dust has been removed is sucked from the opening 6 and discharged from the exhaust port 5.

  Finally, the effect of the first embodiment will be described.

  Since the swirling airflow swirling and descending the outer periphery of the outer cylinder 2 is sucked only from the opening 6 on the side surface of the inner cylinder 4, the dust accumulated near the wall surface of the bottom surface of the outer cylinder 2 due to the centrifugal force due to the swirling airflow, The air flow wound up toward the center of the inner cylinder 4 is reduced. As a result, re-scattering due to the airflow of accumulated dust can be suppressed. Therefore, it is possible to provide a cyclone dust collector with a reduced device size without reducing the dust collection efficiency.

  In Embodiment 1, the rectifying member 7 is formed of a curved plate having a certain curvature. Thereby, when the airflow sucked into the inner cylinder 4 while turning and collides with the rectifying member 7, dust contained in the airflow can be captured, and dust collection efficiency can be improved. Further, the resistance to the airflow flowing into the inner cylinder 4 can be reduced, and the pressure loss can be reduced.

  In the first embodiment, the convex surface of the rectifying member 7 is opposed to the gas flow direction in the outer cylinder. Thereby, when the airflow sucked into the inner cylinder 4 while turning and collides with the rectifying member 7, dust contained in the airflow can be efficiently separated to the outside, and dust collection efficiency can be improved.

  In the first embodiment, the total area of the openings 6 partitioned by the rectifying member 7 is equal to or smaller than the cross-sectional area of the inner cylinder 4. When the total area of the openings 6 is larger than the cross-sectional area of the inner cylinder 4, the force for sucking the gas swirling inside the outer cylinder 2 into the inner cylinder 4 becomes too large, and the centrifugal force acting on the dust contained in the gas is increased. As a result, the dust collection efficiency may decrease. On the other hand, the possibility that dust collection efficiency will fall can be reduced by making the total of the area of the opening part 6 into the cross-sectional area of the inner cylinder 4 or less. However, if the total area of the openings 6 is too small, the pressure loss may increase.

  In the first embodiment, the closed surface of the inner cylinder 4 is formed so as to be convex inward. Thereby, when gas is sucked into the inner cylinder 4, the vortex generated near the closed surface of the inner cylinder 4 can be suppressed, and the pressure loss can be reduced.

  As an example showing the effect of the first embodiment, dust collection efficiency and pressure loss are shown in FIG. As a comparison object, the dust collection efficiency and pressure loss of the dust collector 8 which downsized the conventional cyclone type dust collector shown in FIG. 5 were mentioned. FIG. 6 is a cross-sectional view taken along the line C-C ′ of FIG. 5. In the dust collector 1 of the first embodiment and the dust collector 8 shown in FIGS. 5 and 6, the ratio d2 / d1 of the diameter d1 of the outer cylinder 2 and the diameter d2 of the inner cylinder 4 is The ratio h1 / d1 of the diameter d1 and the height dimension h1 of the apparatus and the ratio h2 / d1 of the diameter d1 of the outer cylinder 2 and the height dimension h2 from the upper surface of the inner cylinder 4 to the opening 6 are the same. That is, the dust collector 1 and the dust collector 8 have similar shapes, but when the height dimension h3 from the bottom surface of the outer cylinder 2 to the bottom surface of the inner cylinder 4 is compared, the dust collector 1 is compared with h3 of the dust collector 8. The h1 of the device 1 is small. When h3 is small, that is, when the distance between the bottom surface of the outer cylinder 2 and the bottom surface of the inner cylinder 4 is small, the dust accumulated on the bottom surface of the outer cylinder 2 is re-scattered due to the influence of the airflow sucked into the inner cylinder 4, and the dust collection efficiency Is expected to decrease. However, in FIG. 4, when comparing the dust collection efficiency and the pressure loss between the dust collection device 1 and the dust collection device 8, the dust collection efficiency of the dust collection device 8 is 66.1% and the pressure loss is 65.6 Pa. On the other hand, the dust collection efficiency of the dust collector 1 is improved to 77.3%, and the pressure loss is reduced to 60.8 Pa. Therefore, by adopting the configuration of the first embodiment, it is possible to suppress re-scattering of the accumulated dust due to the air flow, and to provide a cyclone dust collector with a reduced device size without reducing dust collection efficiency. be able to.

  In the first embodiment, the rectifying member 7 is formed of a curved plate, but may be a flat plate oriented in the center direction of the inner cylinder 4. Thereby, the structure of a dust collector can be made simpler and manufacture etc. become easy.

  In the first embodiment, the convex surface of the rectifying member 7 is opposed to the gas flow direction in the outer cylinder, but the concave surface may be opposed to the gas flow direction in the outer cylinder. Thereby, the airflow sucked into the inner cylinder 4 while turning can be guided more smoothly to the inner side of the inner cylinder 4, and the pressure loss can be reduced.

  Further, the outer cylinder 2 may be divided so that a part of the outer cylinder 2 on which the collected dust is accumulated is detachable as a dust collection chamber. Thereby, it becomes possible to remove the dust accumulated in the dust collection chamber, and it is possible to easily discard the dust and clean the inside of the apparatus.

  A handle may be attached to the outer periphery of the dust collection chamber. Thereby, the handle at the time of removing a dust collection chamber is formed, and handling can be made easier.

  Moreover, you may give a hydrophilic process to any one of the outer cylinder 2, the inner cylinder 4, and the rectifying member 7, or two or more surfaces. As a result, it is possible to easily wash away the adhered dust with water, and cleaning and the like can be facilitated.

  Further, the inner side of the outer cylinder 2 may be formed of a charging material. As a result, when the dust flowing into the outer cylinder 2 comes into contact with the inner surface of the outer cylinder 2, the dust is charged, and the dust aggregates and becomes larger, so that a larger centrifugal force can be applied. Dust efficiency can be increased.

  Further, fine irregularities may be provided on the inner surface of the outer cylinder 2. Thereby, dust can be easily attached to the inner surface of the outer cylinder 2, and dust collection efficiency can be improved.

  Further, an insecticidal material may be provided inside the outer cylinder 2. Thereby, the insect caught inside the outer cylinder 2 can be killed, and the insect can be prevented from escaping by itself.

  Further, the inside of the outer cylinder 2 may be subjected to antibacterial and antifungal processing. Thereby, generation | occurrence | production of the mold | fungi etc. in the outer cylinder 2 can be suppressed, and it can prevent becoming an unsanitary state.

  A filter may be provided downstream of the opening 6 on the side surface of the inner cylinder 4 in the gas flow direction. As a result, fine dust, live insects, and the like that could not be captured inside the outer cylinder 2 can be collected, and these can be prevented from being discharged from the exhaust port 5.

(Reference form 1)
Hereinafter, Reference Embodiment 1 of the present invention will be described with reference to the drawings.

  In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 7 is a perspective view of the dust collector 9 in Reference Embodiment 1 of the present invention, FIG. 8 is a configuration diagram showing a cross section cut along DD ′ of FIG. 7, and FIG. It is the figure of the rectification member set 10 formed so that the obstruction | occlusion surface of this and the rectification | straightening member 7 might be integrated and detachable from the inner cylinder 4. FIG.

  The configuration of Reference Embodiment 1 is the same as that of Embodiment 1 except for the inner cylinder 4 and the rectifying member 7. The rectifying member 7 is provided with a protrusion 11, and the inner cylinder 4 is provided with a groove 12. The flow regulating member set 10 is a resin-integrated molded product, but the material may be a metal such as a hot-dip galvanized steel sheet.

  The basic operations and effects of Reference Embodiment 1 are the same as those of Embodiment 1.

  In the reference form 1, the closed surface of the inner cylinder 4 and the rectifying member 7 are integrated and formed so as to be detachable from the inner cylinder 4. Thereby, it becomes possible to attach and detach the whole baffle member set 10, and cleaning etc. can be made easier.

  Moreover, in the reference form 1, it formed so that the projection part 11 provided in the baffle member 7 and the groove | channel 12 provided in the inner cylinder 4 side surface might engage. Thereby, the flow regulating member set 10 can be attached and detached with a simple mechanism, and handling can be facilitated.

  Moreover, in the reference form 1, the protrusion 11 provided on the rectifying member 7 is moved along the groove 12 provided on the inner cylinder 4 in the axial direction of the inner cylinder so that the height of the opening 6 is increased. A mechanism that can adjust the height is provided. Thereby, the area of an opening part can be adjusted according to the airflow which flows in from the inlet of a dust collector, and it can be used on optimal conditions.

  INDUSTRIAL APPLICABILITY The dust collector of the present invention is useful because it collects dust in the air, purifies it, and supplies it to the room when taking outdoor air into the room for ventilation or air conditioning of the building. It can also be applied to air conditioners and air purifiers that are used while circulating indoor air.

DESCRIPTION OF SYMBOLS 1 Dust collector 2 Outer cylinder 3 Intake port 4 Inner cylinder 5 Exhaust port 6 Opening part 7 Rectification member 8 Dust collector 9 Dust collector 10 Set of rectifier member 11 Protrusion part 12 Groove 101 Dust collector 102 Outer cylinder 103 Inlet 104 Conical cylinder 105 Dust collection chamber 106 Inner cylinder 107 Exhaust port

Claims (7)

An outer cylinder closed at both end faces, an intake port connected in a tangential direction of the outer periphery of the outer cylinder, an inner cylinder having an axis parallel to the axis inside the outer cylinder and connected to one end face of the outer cylinder; A cyclone type dust collector connected to the end surface of the inner cylinder and connected to the outside of the outer cylinder, wherein the inner cylinder closes the end surface not connected to the outer cylinder, and gas on the side The opening is partitioned by a rectifying member, and a plurality of the rectifying members are arranged on the closed surface of the inner cylinder along a substantially circumference of the inner cylinder. The dust collector, wherein the total area of the openings partitioned by the members is equal to or smaller than the cross-sectional area of the inner cylinder. The dust collector according to claim 1, wherein the rectifying member is formed of a flat plate oriented in the center direction of the inner cylinder. 2. The dust collector according to claim 1, wherein the rectifying member is formed of a curved plate having a certain curvature. The dust collector according to claim 3, wherein the convex surface of the curved plate is opposed to the gas flow direction in the outer cylinder. The dust collector according to any one of claims 1 to 4, wherein a closed surface of the inner cylinder is formed so as to be convex toward the inner side of the inner cylinder. 6. The dust collecting apparatus according to claim 1, wherein the outer cylinder is divided so that a part of the outer cylinder on which the collected dust is accumulated can be attached and detached as a dust collecting chamber. . The dust collecting apparatus according to claim 6, wherein a handle is attached to the outer periphery of the dust collecting chamber.

Images