JP2010227287A - Electric vacuum cleaner - Google Patents

Abstract

An electric vacuum cleaner having a cyclone dust collection chamber capable of maintaining a stable suction force and uniformly compressing dust removed is realized.
SOLUTION: The inside of the cyclone chamber 101 is swung by a discharge lid 116 that can be freely opened and closed to cover the openings at the lower ends of the cyclone chamber 101 and the filter chamber 102 in the dust collecting mechanism 100, and the intake air passing through the mesh filter unit 115 is meshed. The flow path formed between the filter unit 115 and the discharge lid 116 was passed through to the filter chamber side.
[Selection] Figure 1

Description

  The present invention relates to a vacuum cleaner, and more particularly to a cyclone type vacuum cleaner.

  Conventionally, in a vacuum cleaner equipped with a cyclone dust collecting mechanism, the cyclone dust collecting mechanism removes dust-containing air sucked from a suction port by centrifugal separation using a cyclone separating cylinder, and the dust removed is accumulated in a dust collecting case. If a certain amount of dust is removed from the dust collection case, the dust collection case becomes large. In order not to increase the size of the dust collection case, it is necessary to compress the dust that has been removed. In addition, if the dust that has been removed is not compressed, there is a risk that the dust will rise when discharged. However, since the compressive force is weak only with the swirling flow for removing dust from the dust-containing air, dust that has been removed and accumulated in the dust collecting case cannot be sufficiently compressed.

  As a solution to this problem, there is a method of centrifuging in a cyclone dust collection chamber and compressing the collected dust by the flow of intake air.

  In a vacuum cleaner described in Japanese Patent Application Laid-Open No. 2007-282929 (Patent Document 1), a first suction unit is provided in the upper part of the cyclone dust collection chamber, and a second suction part is provided in the lower part. The dust that descends and accumulates is compressed by the suction of the second suction part.

  In the vacuum cleaner described in Japanese Patent No. 4102642 (Patent Document 2), a dust collection case communicating with the cyclone separation cylinder is provided by a communication port formed in the cyclone separation cylinder. Since the flow of intake air in the main body of the vacuum cleaner is divided into two paths, a pressure difference occurs in the dust flow direction in the dust collection case, and the collected dust is always compressed by this pressure difference. Further, since the first auxiliary filter is disposed at the lower part of the dust collection case, the dust is further compressed by the weight of the dust in the dust collection case.

JP 2007-282929 A Japanese Patent No. 4102642

  However, in the mechanism of Patent Document 1, since the second suction part that compresses the dust that has been removed is disposed on the outer peripheral surface and the bottom surface of the cylinder, as the amount of accumulated dust increases, the air flow for dust compression is less likely to flow. Therefore, the dust that has been removed cannot be uniformly compressed. Further, when the second suction part is disposed on the bottom surface, there is a high possibility that dust accumulated in the dust collection case will rise and block the intake port.

  Further, in the mechanism of Patent Document 2, it is difficult to discharge fine dust attached to the second auxiliary filter at the same time as the dust removed by the cyclone separation cylinder.

  An object of the present invention is to provide a vacuum cleaner that maintains a stable suction force and can uniformly compress dust that has been removed.

  In order to achieve the above object, the present invention is characterized by the fact that the outer cylinder (for example, dust collector) of the dust collector is arranged from the outer peripheral surface of the inner cylinder (for example, cyclone separating cylinder) of the dust collector (for example, dust collecting mechanism). The mesh member (for example, mesh filter part) is provided over the inner peripheral surface of the case.

  In order to achieve the above object, a feature of the present invention is that a filter (for example, a mesh filter portion) for collecting dust from the dusty air after separation is provided on the lower side in the dust collector. There is.

  In order to achieve the above object, the present invention is characterized by the fact that the cyclone chamber is swung through the mesh filter section by a discharge lid provided to be openable and closable covering the opening of the cyclone chamber and the lower end of the filter chamber in the dust collecting mechanism. The intake air is caused to flow into the filter chamber through a flow path formed between the mesh filter portion and the discharge lid.

  Preferably, the opening / closing shaft of the discharge lid is provided on the filter opening / closing shaft of the filter portion. Preferably, the opening direction of the upper intake port of the cyclone separation cylinder is not open linearly with respect to the inlet pipe provided along the inner periphery of the dust collecting case. Preferably, in the flow path between the discharge lid and the mesh filter portion, convex portions for rectifying the flow of the intake air are formed radially.

  According to the present invention, dust that has been removed is compressed and does not rise again in the outer cylinder and blocks the through hole of the inner cylinder, so that a stable suction force can be maintained, and the collected dust can be collected on the mesh member or filter. It is possible to compress uniformly.

  Further, according to the present invention, the exhaust lid that can be freely opened and closed covers the cyclone chamber in the dust collecting mechanism and the opening at the lower end of the filter chamber, and swirls the cyclone chamber to discharge the intake air that has passed through the mesh filter portion from the mesh filter portion. By flowing through the flow path formed between the lids and flowing into the filter chamber, pressure is generated by the flow of intake air flowing through the flow path in the cyclone separation cylinder. As a result, the generated pressure is applied to the dust accumulated on the mesh filter, and the collected dust is always compressed by its own weight and pressure, so a certain amount of dust can be accumulated even if the dust collection case is small. it can.

  In addition, by providing the upper intake port in the range between the inlet pipe of the cyclone separation cylinder and the cap part, the intake air that is guided to the flow path in the cyclone separation cylinder by the discharge lid by the dust accumulated on the mesh filter part. Even if it is blocked, it is possible to continue the intake air from which dust is removed from the air inlet opening at the top of the cyclone separation cylinder. Thereby, the compressive force of dust can be maintained.

  Further, according to the present invention, by providing the opening / closing shaft of the discharge lid on the filter opening / closing shaft of the filter portion, the unevenness of the appearance can be reduced and the dust collecting mechanism can be downsized.

  Further, according to the present invention, the opening direction of the upper inlet of the cyclone separation cylinder is not linearly opened with respect to the inlet pipe provided along the inner periphery of the dust collecting case. It is possible to prevent the dust-containing dust intake air flowing in from the short circuit and directly flowing from the opening of the intake port into the flow path in the cyclone separation cylinder. As a result, the suction force can be kept stable.

  In addition, according to the present invention, the flow path between the discharge lid and the mesh filter is rectified in the flow path between the discharge lid and the mesh filter portion by radially forming convex portions for rectifying the flow of the intake air. Is done. Thereby, the loss of a dust collection mechanism can be reduced.

1 is a perspective view of a dust collection mechanism according to Embodiment 1 of the present invention. The whole side view of the said vacuum cleaner. The side view of the main-body part of the said vacuum cleaner. The longitudinal cross-sectional view which showed the flow of the air of a dust collection mechanism. The front view of a dust collection mechanism. The perspective view of a dust collection mechanism cyclone separation cylinder. AA sectional drawing in FIG. The perspective view of the state which opened the discharge lid of the dust collector. The perspective view which showed the mesh filter part which concerns on an example of Example 2 of this invention. The longitudinal cross-sectional view which showed the mesh filter part which concerns on an example of Example 2 of this invention. The longitudinal cross-sectional view which showed the mesh filter part which concerns on an example of Example 3 of this invention. The longitudinal cross-sectional view which showed the dust collection mechanism which concerns on Example 3 of this invention. The longitudinal cross-sectional view which showed the dust collection mechanism which concerns on Example 4 of this invention.

  Hereinafter, typical Examples 1 to 4 of the present invention will be described. The technical idea of the present invention is not limited to the first to fourth embodiments, and can be applied to other embodiments.

  FIG. 2 is an overall external view of a vacuum cleaner according to an example of the embodiment of the present invention.

  The vacuum cleaner in this embodiment has a vacuum cleaner body 1 having an air inlet (main body air inlet) 7, a hose 2 connected at one end to the air inlet 7, and one end connected to the other end of the hose 2. A hand operating tube 3 that is connected to the other end of the hand operating tube 3 and connected to the other end of the telescopic extension tube 4, and a suction port 5 that is connected to and connected to the other end of the hand extending operation tube 4 and is connected to the vacuum cleaner main body 1 at hand. The tube 3 is connected by a hose 2, and the suction port 5 is connected to the local operation tube 3 via the expansion / contraction extension tube 4. It is preferable that the vacuum cleaner main body 1 is horizontally placed in the usage state of the vacuum cleaner, and the vacuum cleaner main body 1 is vertically placed in the housed state of the vacuum cleaner. A dust collection chamber (not shown) communicating with the air inlet 7 is disposed on the front side (the side to which the hose 2 is connected) in the cleaner body 1, and dust is collected in the dust collection chamber. A dust collecting mechanism (dust collecting device) 100 is detachably disposed. An electric blower 6 that generates a suction force is disposed on the rear side of the cleaner body 1. When the power button provided on the hand control tube 3 is turned on by the user, the electric blower 6 is activated to generate a suction force. The air sucked from the suction port 5 and the dust sucked together with the air are guided in the order of the extension / contraction extension tube 4, the hand operation tube 3, the hose 2, and the cleaner body 1.

  FIG. 3 is an external view of a cleaner body according to an example of the embodiment of the present invention.

  The vacuum cleaner body 1 includes an electric blower 6 and a cord reel (not shown). The cleaner body 1 is covered with an upper case 10 and a lower case 20, and the lower case 20 includes a traveling wheel 21 and a guide wheel 22 for causing the cleaner body 1 to travel on the floor surface. . Further, a main body handle 11 is attached to the upper part of the upper case 10 so as to be rotatable in the front-rear direction, so that the user can carry the cleaner main body 1. The filter dust removal unit 12 built in the cleaner body 1 is located between the electric blower 6 and the dust collection mechanism 100 in the cleaner body 1 and is provided at the exhaust port (dust collector exhaust port) of the dust collection mechanism 100. The dust adhering to the filter part 122 is shaken off.

  1 and 4 to 8 are external views of a dust collecting mechanism according to an example of the embodiment of the present invention.

  As shown in FIG. 1, the dust collection mechanism 100 includes a cyclone chamber 101 that separates dust from the dust-containing dust intake air by a centrifugal separation action (cyclone method), and a position that is downstream of the intake air and adjacent to the side of the cyclone chamber 101. In addition, a filter chamber 102 for collecting dust is provided, and a user can attach and detach the dust chamber of the cleaner body 1 with a handle 103 provided at the upper portion of the dust collection mechanism 100. The handle 103 has a rotating shaft (open / close shaft) and is usually housed in an upper lid (first lid) 104 as shown in FIG. 1, but the dust collecting mechanism 100 is a dust collecting chamber of the cleaner body 1. When removing the dust collector or carrying the dust collecting mechanism 100, the user can grasp the handle 103 by lifting the front portion of the handle 103. Here, the handle 103 is rotated so as not to impair the appearance of the dust collecting mechanism 100 or to save space, but may be fixed. The cyclone chamber 101 includes a dust collection case 112 formed by a hollow outer cylinder, and a cyclone separation cylinder 113 formed by a hollow inner cylinder that is formed concentrically with the outer cylinder and is included in the outer cylinder. The dust collecting case 112 is made of a transparent or translucent plastic or resin so that dust accumulation can be seen by the user or a sensor provided outside the dust collecting case 112 can detect the dust accumulation. preferable. The cyclone separating cylinder 113 is made of an antibacterial metal (for example, silver) or an antibacterial substance (for example, silver) or a coated metal (for example, stainless steel) so as to suppress the growth of bacteria. Is preferred. It is preferable that the axial direction of the outer cylinder and the inner cylinder of the dust collecting mechanism 100 is substantially the gravity action direction when the gravity action direction is set to the downward direction in the usage state of the vacuum cleaner. Here, the substantially gravitational action direction refers to a range in which the angle formed between the axial direction and the gravitational action direction is from 0 ° to 45 °. The filter chamber 102 may be disposed in the upper or lower portion of the cyclone chamber 101, or in the upper lid 104 or the discharge lid (second lid) 116, instead of being disposed on the side of the cyclone chamber 101.

  As shown in FIG. 1, a part of the upper circumferential surface of the dust collection case 112 is opened along the circumferential surface of the dust collection case 112, that is, a tangent to the circumferential surface of the dust collection case 112. An inlet pipe (dust collector inlet) 111 connected in the direction is formed. However, the connection direction of the inlet pipe 111 is not necessarily a tangential direction, and a swirling flow can be generated as long as it is deviated from the axis of the dust collecting case 112. It is preferable that the opening direction of the inlet pipe 111 and the direction of the exhaust port in which the filter portion 122 is disposed are opposed to each other. When the dust collection case 112 is mounted in the dust collection chamber, the inlet pipe 111 communicates with the intake port 7 through an elastic seal member, and the exhaust port where the filter unit 122 is disposed is an electric motor of the cleaner body 1. It communicates with the air inlet of the blower 6.

  As shown in FIGS. 1 and 6, both ends of the cyclone separating cylinder 113 in the axial direction are open. The opening at the upper end of the cyclone separation cylinder 113 communicates with the flow path in the upper lid 104. The opening at the lower end of the cyclone separation cylinder 113 opens into the dust collection case 112. The cyclone separation tube 113 extends from the outer peripheral surface of the cyclone separation tube 113 toward the inner peripheral surface of the dust collecting case 112 at a position about ¼ from the middle of the cyclone separation tube 113 or slightly lower than the middle or the lower end. An annular shade 114 is provided. The cap 114 suppresses the dust from being rolled up from the bottom and the backflow of air. A space is formed between the outer peripheral end of the cap portion 114 and the inner peripheral surface of the dust collecting case 112, and an air flow path from the top to the bottom is formed. When passing through the cap portion 114, the flow velocity of the air increases, so that the axial component of the flow increases. The inlet pipe 111 is disposed above the shade part 114. An intake port 117 made up of a plurality of through holes is formed on the circumferential surface of the cyclone separation cylinder 113 above the shade portion 114. As shown in FIG. 6, the air inlet 117 is preferably formed in a portion of the circumferential surface of the cyclone separating cylinder 113 excluding a part in the circumferential direction. As a result, the intake port 117 is not in a straight line with respect to the opening direction of the inlet pipe 111. A direction perpendicular to the axial direction of the cyclone separating cylinder 113 and the dust collecting case 112 in the vicinity of the lower end of the cyclone separating cylinder 113 (preferably the lower end) from the outer peripheral surface of the cyclone separating cylinder 113 to the inner peripheral surface of the dust collecting case 112 A mesh filter portion (mesh member) 115 extending straight is formed. The mesh filter unit 115 is also composed of an antibacterial metal (for example, silver) or an antibacterial substance (for example, silver) or a coated metal (for example, stainless steel) so as to suppress the growth of bacteria. Is preferred. The mesh filter 115 preferably has finer eyes than the through-hole formed in the air inlet 117. Since the inside of the cyclone separation cylinder 113 does not contribute to centrifugation, it is preferable that air does not swirl. In order to prevent the air from swirling, a rib (rectification) extends in the axial direction on a portion of the inner peripheral surface of the cyclone separation cylinder 113 where the intake port 117 is not formed (particularly in a range from the cyclone separation cylinder 113 to the intake port 117). Plate) may be provided.

  As shown in FIG. 4, the dust-containing air sucked from the suction port 5 by the suction force generated by the electric blower 6 flows into the cleaner main body 1 and the dust collecting mechanism 100 through the expansion / contraction extension pipe 4 and the hose 2. . Dust-containing intake air that has flowed into the dust collection mechanism 100 flows into the dust collection case 112 through the inlet pipe 111 that is open along the inner peripheral surface of the dust collection case 112, and swirls around the outer periphery of the cyclone separation cylinder 113. Thus, dust is separated by centrifugal separation. Due to the centrifugal separation action, the air on the outer peripheral side contains a lot of dust, and conversely, the air on the inner peripheral side has a small amount of dust. Air containing a large amount of dust after centrifugation (air outside the cyclone separation cylinder 113) is guided onto the mesh filter portion 115 below the dust collection case 112. The intake air swirling from the upper part to the lower part of the dust collection case 112 passes through the mesh filter 115 and swirls at the discharge lid 116 at the lower part of the dust collection case 112, and enters the cyclone separation cylinder 113 from the lower end opening of the cyclone separation cylinder 113. Guided to the formed flow path. A part of the intake air that swirls around the outer periphery of the cyclone separation cylinder 113 and is removed by centrifugal separation (air with less dust after centrifugation) is in a range between the inlet pipe 111 and the cap 114 of the cyclone separation cylinder 113. The air flows into the flow path in the cyclone separation cylinder 113 from the air inlet 117 that opens. As a result, even if the dust that has accumulated on the mesh filter unit 115 blocks the intake air that is guided to the flow path in the cyclone separation cylinder 113 by the discharge lid 116, the intake port 117 that opens to the top of the cyclone separation cylinder 113 Since the dust-removed intake air can continue to flow, the suction force can be maintained. On the other hand, the dust accumulated on the mesh filter unit 115 is compressed by the suction force from the lower end opening of the cyclone separation cylinder 113.

  As shown in FIG. 5, the intake port 117 intersects the flow path of the cyclone separation cylinder 113 and the inlet pipe 111 so that dust-containing dust intake air flowing from the inlet pipe 111 does not directly flow into the cyclone separation cylinder 113 from the intake port 117. The intake port 117 is not provided in the range of the shaded portion B. As a result, the dust-containing dust intake air flowing from the inlet pipe 111 is prevented from being short-circuited and directly flowing from the opening of the intake port 117 into the flow path in the cyclone separation cylinder 113. Further, the portion where the intake port 117 is not formed (shaded portion B) also serves as a guide plate so that the dust-containing dust intake does not turn backward. Here, in the intake port 117, a small-diameter hole that is not easily clogged is formed on the side surface of the cyclone separation cylinder 113, but a mesh-like filter may be arranged to separate finer dust. The mesh filter eyes may be the same as or finer than the mesh filter 115.

  Flow rate of air containing a large amount of dust after centrifugation (air outside the cyclone separation cylinder 113) in a state where dust is not accumulated in the dust collection mechanism 100, that is, in a state where dust is not accumulated on the mesh filter unit 115. May be equal to the flow rate of air with less dust after centrifugation (air in the cyclone separation cylinder 113), but in order to increase the compressive force of dust on the mesh filter unit 115, It is preferable that the flow rate of air containing a large amount of dust after centrifugation is higher than the flow rate of air having less dust. However, as the dust accumulates on the mesh filter unit 115, the suction force on the outer peripheral side of the cyclone separation cylinder 113 decreases, so the flow rate of air containing a lot of dust after centrifugation is reduced, and the The flow rate of air with less dust is considered to increase. The magnitude and ratio of the flow rate of air having a small amount of dust after centrifugation and the flow rate of air containing a large amount of dust after centrifugation are determined by the ratio of the intake port 117 when dust is not accumulated in the dust collection mechanism 100. It depends on the total opening area, the total opening area at the lower end of the cyclone separating cylinder 113, the opening area between the shade portion 114 and the inner peripheral surface of the dust collecting case 112, and the total opening area of the mesh filter portion 115. For example, if the total opening area of the intake port 117 is reduced and the diameter of the cyclone separation cylinder 113 is increased, the dust compression force tends to be weakened. Further, if the total opening area of the intake port 117 is increased and the diameter of the cyclone separation cylinder 113 is decreased, the dust compression force tends to increase. Further, if the cross-sectional area (opening area) of the inlet pipe 111 is reduced, the swirl speed in the cyclone chamber 101 is increased, so that dust is pressed downward by the flow of intake air and the compression force tends to increase.

  Further, the cross-sectional area of the inner flow path of the cyclone separation cylinder 113 (opening area of the cyclone separation cylinder 113) and the cross-sectional area of the flow path between the cyclone separation cylinder 113 and the dust collection case 112 (opening area of the dust collection case 112) (The area obtained by subtracting the opening area of the cyclone separation cylinder 113 from the above) may be equal, but in order to increase the volume of dust that can be accumulated on the mesh filter unit 115, the ratio of the inner flow path of the cyclone separation cylinder 113 is The cross-sectional area of the flow path between the cyclone separating cylinder 113 and the dust collecting case 112 is preferably larger than the cross-sectional area. If the ratio of the cross-sectional area of the inner flow path of the cyclone separation cylinder 113 and the ratio of the cross-sectional area of the flow path between the cyclone separation cylinder 113 and the dust collection case 112 are equal, the radius of the cyclone separation cylinder 113 and the dust collection case The radius ratio of 112 is 1: √2. Further, in order to increase the volume in which dust can accumulate on the mesh filter unit 115, the shape of the dust collecting case 112 may be a hollow truncated cone shape, or the shape of the cyclone separating cylinder 113 may be a hollow inverted truncated cone shape. Alternatively, the shape of the cyclone separating cylinder 113 may be a combination of a cylinder having a large radius on the upper side of the shade 114 and a cylinder having a small radius on the lower side of the shade 114.

  Then, as shown in FIG. 4, the intake air guided to the flow path in the cyclone separation cylinder 113 by the discharge lid 116 merges with the intake air from the intake port 117 formed in the upper part of the cyclone separation cylinder 113, and the cyclone chamber 101 flows into the flow path in the upper lid 104 from the upper opening of 101 (the upper end opening of the cyclone separation cylinder 113), passes through the filter chamber 102 provided on the downstream side of the intake air, and is sucked into the electric blower 6. Light dust that could not be separated by the centrifugal separation action in the cyclone chamber 101 and fine dust that could not be collected by the mesh filter unit 115 are collected by the filter unit 122 provided in the filter chamber 102. The exhaust from the electric blower 6 is cooled through a filter (not shown), partly through an exhaust passage (not shown), partly through a cord reel, and then released outside the machine. .

  Next, details of the cyclone chamber 101 and the filter chamber 102 will be described with reference to FIG. 1 and FIGS.

  The cyclone chamber 101 includes a dust collection case 112, a cyclone separation cylinder 113, and a cap portion 114 that protrudes from the outer periphery of the cyclone separation cylinder in the dust collection case inner circumferential direction. The cap portion 114 has a function of suppressing dust accumulated on the mesh filter portion 115 from rising. As shown in FIG. 6, the cyclone separating cylinder 113 is detachable from the dust collecting case 112 by being connected to the upper lid 104 by a connecting portion 118. As a result, the cyclone separation cylinder 113 can be removed from the dust collection case 112 and put in the dust collection case 112 for cleaning, so that the careability of the dust collection case 112 is improved. Here, as described above, the axial direction of the cyclone separation cylinder 113 faces the vertical direction, but may be inclined instead of the vertical direction. Furthermore, although the edge of the cap portion 114 protrudes horizontally, as shown in FIG. 6, it may be inclined and curved toward the lower end of the dust collecting case 112 in order to prevent dust from rising.

  As shown in FIG. 8, the openings at the lower ends of the cyclone chamber 101 and the filter chamber 102 are arranged on the entire inner circumference of the cyclone separation cylinder 113 and from the outer circumference of the cyclone separation cylinder 113 to the inner circumference of the dust collecting case 112. The openable / closable mesh filter 115 and the discharge lid 116 are closed. The mesh filter unit 115 and the discharge lid 116 are rotated by a filter rotation shaft (opening / closing shaft) 124 provided on the filter chamber 102 side. The filter rotating shaft 124 is shared by the rotating shaft of the mesh filter unit 115, the rotating shaft of the discharge lid 116, and the rotating shaft of the filter unit 122. The mesh filter unit 115 and the discharge lid 116 are locked by a clamp (locking member) 107 provided on the lower side of the dust collecting case 112 and on the opposite side of the filter chamber 102. Specifically, the outer periphery end of the mesh filter portion 115 disposed on the inner side is sandwiched between the dust collecting case 112 and the discharge lid 116 by the discharge lid 116 disposed on the outer side being locked by the clamp 107. Is locked by. Further, a disposable filter material (for example, tissue paper) finer than the mesh filter unit 115 may be locked on the upper surface of the mesh filter unit 115. Specifically, when the discharge lid 116 is locked by the clamp 107, the outer peripheral end of the mesh filter unit 115 is sandwiched between the dust collection case 112 and the discharge lid 116, and further, the outer peripheral end of the disposable filter material is collected. It is locked by being sandwiched between the dust case 112 and the mesh filter portion 115. Here, the mesh filter unit 115 may not have a mesh filter disposed on the inner peripheral side of the cyclone separation cylinder 113. The clamp 107 urges the mesh filter part 115 and the dust collecting case 112, the cyclone separating cylinder 113, the filter case 121 forming the filter part 122, and the discharge lid 116 to come into contact with each other in an airtight state. An elastic seal member may be interposed between the contact portions. When the user depresses the button 105 formed on the upper outer side of the dust collecting case 112 when throwing away the garbage, the outer side of the dust collecting case 112 extends in the axial direction from the upper end to the lower end and extends in the circumferential direction of the dust collecting case 112 The transmission rod 106 having an axial movement moves in the axial direction, moves the clamp 107 to the release position, the mesh filter unit 115 and the discharge lid 116 are opened, and the user can remove the accumulated dust with one operation by pressing the button. Can be discharged. Here, a cylindrical convex portion 125 may be provided on the surface of the mesh filter portion 115 on the cyclone separation cylinder 113 side. By providing the convex portion 125, the dust accumulated on the mesh filter portion 115 is easily peeled off, and the dust is easily discharged. Furthermore, a plurality of convex portions (ribs, rectifying plates) 119 extending in the radial direction are formed in the flow path between the mesh filter portion 115 and the discharge lid 116 in order to rectify the flow of intake air. By rectifying the flow of intake air in the flow path, a stable suction force can be maintained. Here, the convex portion 119 is formed on one side or both sides of the discharge lid 116 on the mesh filter portion 115 side or the mesh filter portion 115 side.

  The upper openings of the cyclone chamber 101 and the filter chamber 102 are closed by the upper lid 104, and the upper lid 104, the dust collecting case 112, and the filter case 121 are in an airtight state. Here, an elastic seal member may be interposed between the contact portions. The upper lid 104 is detachable from the dust collection case 112 and the filter case 121. In the present embodiment, there is a screw portion on the side surface of the upper lid, and the upper lid 104 can be detached by removing the screw. Here, the upper lid 104 may be provided integrally with the dust collection case 112 and the filter case 121 in order to reduce the number of parts.

  A filter part 122 having a filter in which a waveform is pleated is provided at the rear part of the filter case 121 of the filter chamber 102. The filter eyes of the filter unit 122 are finer than the through holes of the intake port 117 and the mesh filter unit 115. The filter portion 122 is provided so as to be openable and closable around a filter rotating shaft 124 provided at the lower part of the filter case with respect to the filter case 121, and is locked by a filter clamp (locking means) 123. Fine dust adhering to the filter portion 122 is peeled off to the lower mesh filter portion 115 side by a dust removal mechanism, and the filter portion 122 can be opened and closed by releasing the filter clamp 123, so that fine dust can be discharged in one operation. The mechanism. In addition, by providing the rotation axis of the discharge lid 116 and the filter unit 122 on the filter rotation shaft 124, it is possible to reduce the appearance unevenness. Here, the axes of the mesh filter 115 and the discharge lid 116 may be provided coaxially. The portion of the discharge lid 116 that faces the lower opening of the cyclone chamber 101 and the portion that faces the lower opening of the filter chamber 102 are isolated without being communicated with each other, but are preferably formed integrally.

  With the above configuration, the dust that has been removed is compressed and does not rise again in the dust collection case and obstruct the intake port, so that a stable suction force can be maintained. Further, since the collected dust can be uniformly compressed on the mesh filter portion, the amount of dust that can be accumulated in the dust collection case is increased, and the rise of dust when the waste is thrown away can be suppressed. In particular, the position where the flow direction of air containing a lot of dust and the gravity action direction substantially coincide, or the position where the vertical component (gravity action direction component) is larger than the horizontal component of the flow direction of air containing a lot of dust. , The mesh filter portion 115 is disposed so as to oppose the flow direction, whereby the dust compression force or compression rate can be improved.

  Note that the dust collection mechanism 100 may be upside down. That is, the upper lid 104, the inlet pipe 111, and the intake port 117 may be disposed on the lower side, and the discharge lid 116 may be disposed on the upper side.

  9 and 10 are perspective views showing the mesh filter portion according to the second embodiment. In addition, the same code | symbol is attached | subjected to the same or equivalent part as the structure as described in Example 1, and description is abbreviate | omitted. Since the basic operation is the same as that of the first embodiment, description thereof is omitted.

  The mesh filter part 115 of Example 2 was not a flat shape but a three-dimensional shape. In the example of FIG. The mesh filter unit 115 may have a truncated cone shape in which the apex portion of the cone shape (the portion corresponding to the inner peripheral side of the cyclone separation cylinder 113) is opened, or an inverted shape obtained by inverting the cone shape. A conical shape may be sufficient. The mesh filter unit 115 may have an upper hemispherical band shape or a lower hemispherical band shape. In the example of FIG. 10, the lower hemisphere band shape that is cut and opened at the lower portion (the portion corresponding to the inner peripheral side of the cyclone separation cylinder 113) and the circular shape at the lower end thereof are combined.

  And according to Example 2, in addition to the effect which Example 1 has, there exists an effect that the area of the mesh filter part 115 can be enlarged and the compression area concerning dust can be increased.

  11 and 12 are a perspective view showing a mesh filter section according to the third embodiment and a cross-sectional view showing a dust collecting mechanism. In addition, the same code | symbol is attached | subjected to the same or equivalent part as the structure as described in Example 1, 2, and description is abbreviate | omitted. Since the basic operation is the same as in the first and second embodiments, description thereof is omitted.

  In the third embodiment, the axial lower end opening of the cyclone separating cylinder 113 is brought into contact with the discharge lid 116, and the axial lower end itself of the cyclone separating cylinder 113 is not opened. A part of the circumferential surface, specifically from the lower end to the position where the mesh filter portion 115 was formed, was opened. As shown in FIG. 11, the mesh filter portion 131 similar to the mesh filter portion 115 may be formed in the opening portion of the lower circumferential surface of the cyclone separation cylinder. The shape of the lower end of the cyclone separating cylinder may be a cone or a pyramid (tapered shape) instead of a cylinder.

  According to the third embodiment, in addition to the effects of the first embodiment, by supporting the lower circumferential portion of the cyclone separation cylinder of the mesh filter section 115, the intake air from the airtight portions of the mesh filter section 115 and the cyclone separation cylinder 113 is supported. There is an effect that deformation can be suppressed. Therefore, dust does not short-circuit into the flow path in the cyclone separation cylinder 113 from the gap between the mesh filter part 115 and the cyclone separation cylinder 113, so that the filter part in the filter chamber is not clogged and the suction force is maintained. There is an effect that can be made.

  FIG. 13 is a cross-sectional view illustrating a dust collection mechanism according to the fourth embodiment. In addition, the same code | symbol is attached | subjected to the same or equivalent part as the structure as described in Example 1, 2, 3, and description is abbreviate | omitted.

  In the fourth embodiment, instead of forming a flow path that connects the upper end opening of the cyclone separation cylinder 113 and the filter chamber 102 in the upper lid 104, the lower end opening of the cyclone separation cylinder 113 and the dust collecting case 112 are disposed in the discharge lid 116. The flow path which connects the lower end opening of this and the filter chamber 102 was formed. That is, the portion of the discharge lid 116 that faces the lower opening of the cyclone chamber 101 and the portion that faces the lower opening of the filter chamber 102 are communicated without isolation. As a result, air with a small amount of dust flowing in from the intake port 117 at the top of the cyclone separation cylinder 113 flows downward in the cyclone separation cylinder 113, and the mesh filter passes through the lower end opening outlet of the cyclone separation cylinder 113, that is, the discharge lid 116. The air that has passed through the section 115 merges and is guided to the filter chamber 102.

  According to the fourth embodiment, in addition to the effects of the first embodiment, since the flow path in the upper lid 104 can be omitted, the height of the upper lid 104 can be reduced, and the height of the dust collecting mechanism 100 can be reduced. There is an effect that can be done. Furthermore, since the air that has passed through the mesh filter unit 115 does not have to pass through the cyclone separation cylinder 113, the pressure loss of the air that has passed through the mesh filter unit 115 can be reduced.

  In the fourth embodiment, since the air that has passed through the mesh filter unit 115 may be guided to the filter chamber 102 without passing through the cyclone separation cylinder 113, the lower end of the cyclone separation cylinder 113 is brought into contact with the discharge lid 116. Without closing or with the lower end of the cyclone separating cylinder 113 as the end surface, the dust collecting case 112 is closed at a predetermined height (for example, a position where the mesh filter 115 is formed or a position where the shade 114 is formed). Alternatively, as in the first embodiment, a flow path that connects the upper end opening of the cyclone separation cylinder 113 and the filter chamber 102 may be formed in the upper lid 104. As a result, the air with a small amount of dust flowing in from the intake port 117 at the upper part of the cyclone separation cylinder 113 flows upward in the cyclone separation cylinder 113 as in the first embodiment, and the upper lid 104 is opened from the upper end opening of the cyclone separation cylinder 113. On the other hand, the air that has flowed through the inner flow path and guided to the filter chamber 102 from the upper side, passes through the flow path in the discharge lid 116 and is guided to the filter chamber 102 from the lower side. Therefore, the air with less dust flowing into the cyclone separation cylinder 113 and the air with much dust outside the cyclone separation cylinder 113 are guided to the filter chamber 102 through the respective flow paths without being merged. They will merge in the chamber 102. In addition, in order to increase the flow rate of the air with much dust after the centrifugation than the flow rate of the air with less dust after the centrifugation, the flow rate of the flow channel in the discharge lid 116 is larger than the cross-sectional area of the flow channel in the upper lid 104. The cross-sectional area may be increased.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 2 Hose 3 Hand operation pipe 4 Telescopic extension pipe 5 Inlet 6 Electric blower 7,117 Inlet 10 Upper case 11 Main body handle 12 Filter dust removal unit 20 Lower case 21 Running wheel 22 Guide wheel 100 Dust collection mechanism 101 Cyclone chamber 102 Filter chamber 103 Handle 104 Upper lid 105 Button 106 Transmission rod 107 Clamp 111 Inlet pipe 112 Dust collection case 113 Cyclone separation cylinder 114 Cap portion 115, 131 Mesh filter portion 116 Discharge lid 118 Connection portion 119, 125 Convex portion 121 Filter case 122 Filter portion 123 Filter clamp 124 Filter rotation axis

Claims (9)

In a vacuum cleaner comprising a main body air inlet, a dust collecting chamber communicating with the main body air inlet, a dust collecting device detachably attached to the dust collecting chamber, and an electric blower communicating with the dust collecting chamber. ,
The dust collector includes a dust collector inlet that can communicate with the main body inlet, a hollow inner cylinder having a plurality of through holes on a circumferential surface thereof, and the inner cylinder that communicates with the dust collector inlet. Including a hollow outer cylinder, and a dust collector exhaust port capable of communicating with the electric blower,
One end of the inner cylinder in the axial direction communicates with the dust collector exhaust port, and the other end in the axial direction of the inner cylinder or a part of the circumferential surface on the other end side in the axial direction of the inner cylinder is the outer cylinder. Open in,
A vacuum cleaner characterized in that a mesh member is provided from the outer peripheral surface of the inner cylinder to the inner peripheral surface of the outer cylinder. The vacuum cleaner of claim 1,
The plurality of through holes are provided on the side where the dust collector intake port is disposed in the axial direction of the inner cylinder,
The mesh member is disposed between the other end in the axial direction of the inner cylinder or a part of a circumferential surface on the other end side in the axial direction of the inner cylinder and the plurality of through holes of the inner cylinder. A vacuum cleaner characterized by that. In a vacuum cleaner comprising a main body air inlet, a dust collecting chamber communicating with the main body air inlet, a dust collecting device detachably attached to the dust collecting chamber, and an electric blower communicating with the dust collecting chamber. ,
The dust collecting device separates dust from the sucked air by centrifugal action on the upper side of the dust collecting device when the gravity action direction is set to the downward direction in the use state of the vacuum cleaner, and the dust collected after the separation. Less air is led to the dust collector exhaust port communicating with the electric blower, and the dusty air after separation is led to the dust collector exhaust port under the dust collector,
The dust collector is provided with a filter for collecting dust from the dusty air after the separation on the lower side in the dust collector. The vacuum cleaner of claim 3,
In the state where dust is not accumulated in the dust collecting device, the flow rate of air having a large amount of dust after separation is larger than the flow rate of air having a small amount of dust after separation. Machine. In a vacuum cleaner equipped with a vacuum cleaner body incorporating an electric blower and a dust collecting mechanism detachably provided in the vacuum cleaner body,
In the dust collection mechanism, a cyclone chamber that separates dust in the dust-containing dust intake by a centrifugal action and a filter chamber that collects dust-containing dust-intake dust that has passed through the cyclone chamber are provided.
In the cyclone chamber, a dust collecting case, a cyclone separating cylinder having a flow path inside, and an outer periphery of the cyclone separating cylinder project in the inner circumferential direction of the dust collecting case, and a dust collecting portion is formed below the dust collecting case. With Kasabe,
Among the cyclone separating cylinder, in the range between the inlet pipe provided along the inner periphery of the dust collecting case and the cap portion, an upper intake port is provided,
The dust collection case and the filter chamber have an opening for discharging dust at the lower end,
The opening is closed by an openable and closable mesh filter portion in which a mesh-like filter is arranged from the outer periphery of the cyclone separation cylinder to the inner periphery of the dust collecting case, and a discharge lid outside the mesh filter portion. And
The air that swirls in the cyclone chamber and passes through the mesh filter portion flows into the filter chamber side through the flow path formed between the mesh filter portion and the discharge lid by the discharge lid. Characterized vacuum cleaner. The vacuum cleaner of claim 5,
An electric vacuum cleaner, wherein an opening / closing shaft of the discharge lid is provided on a filter opening / closing shaft of a filter portion provided at a rear portion of the filter chamber. The vacuum cleaner of claim 6,
The vacuum cleaner, wherein an opening direction of the upper intake port of the cyclone separation cylinder does not open linearly with respect to the inlet pipe. In the vacuum cleaner in any one of Claims 5-7,
A vacuum cleaner characterized in that convex portions for rectifying the flow of intake air are radially formed in a flow path between the discharge lid and the mesh filter portion. In a vacuum cleaner comprising a main body air inlet, a dust collecting chamber communicating with the main body air inlet, a dust collecting device detachably attached to the dust collecting chamber, and an electric blower communicating with the dust collecting chamber. ,
The dust collector includes a dust collector inlet that can communicate with the main body inlet, a hollow inner cylinder having a plurality of through holes on a circumferential surface thereof, and the inner cylinder that communicates with the dust collector inlet. Including a hollow outer cylinder, and a dust collector exhaust port capable of communicating with the electric blower,
One end of the inner cylinder in the axial direction communicates with the dust collector exhaust port,
One end in the axial direction of the outer cylinder corresponding to the other axial end of the inner cylinder or a part of the circumferential surface on one end side in the axial direction of the outer cylinder communicates with the dust collector exhaust port,
A vacuum cleaner characterized in that a mesh member is provided from the outer peripheral surface of the inner cylinder to the inner peripheral surface of the outer cylinder.

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