JP2018191733A - Dust separation device and vacuum cleaner - Google Patents

Abstract

To provide a dust separation device capable of reducing an operation sound by suppressing a sound generated from a grip groove, and a vacuum cleaner.SOLUTION: A dust separation device 7 includes: a second separation part 35 for causing the air containing dust to generate a swirl flow to separate dust, and causing clean air to outflow from the center of the swirl of the swirl flow; a top cover 36 for covering the second separation part 35; a grip part 38 for sectioning a space 37 provided to the top cover 36, into which a finger can be inserted; and a noise suppression mechanism 39 for suppressing the noise in the space 37 of the sound generated by the air passing through the second separation part 35.SELECTED DRAWING: Figure 3

Description

  Embodiments according to the present invention relate to a dust separator and a vacuum cleaner.

  2. Description of the Related Art There is known a dust separation device that includes a cyclone separation type dust collection unit, a cover that covers an upper portion of the dust collection unit, and a handle provided on the cover. On the inside of the handle is a grip groove for inserting a finger.

JP 2007-117710 A

  In any of the separation methods including the cyclone separation method and the filtration separation method, air flows violently in the dust collecting portion in order to generate the suction negative pressure. This air flow generates sound, for example, airflow sound and wind noise. The sound generated by the air flow is emitted to the surroundings from the outer shell of the dust collecting part and the cover covering the dust collecting part.

  By the way, even if the handle is integrated with the cover as in the case of the conventional dust separation unit, or even if the handle is provided so as to cover the outside of the cover, the finger is placed inside the handle. It is necessary to have a gripping groove for inserting. In order to prevent an increase in the size of the dust separation device, the gripping groove is disposed outside the air passage of the dust collection unit and in the vicinity of the dust collection unit.

  The gripping grooves arranged in this way reflect and resonate the sound emitted from the dust collecting part to amplify the noise.

  Therefore, the present invention proposes a dust separation device and a vacuum cleaner that can suppress the sound emitted from the gripping groove and reduce the operation sound.

  In order to solve the above problems, a dust separation device according to an embodiment of the present invention generates a swirling flow in dust-containing air to separate the dust, and clean air from the center of the swirling flow vortex. A centrifuge part to be discharged; an outer shell covering the centrifuge part; a handle part provided in the outer shell and defining a space into which a finger can be inserted; and air passing through the centrifuge part And a noise suppression mechanism that suppresses noise generated in the space.

  The vacuum cleaner according to the embodiment of the present invention includes a vacuum cleaner main body, an electric blower that is housed in the main body of the vacuum cleaner and generates negative pressure, and the dust separator that is fluidly connected to the electric blower. And.

The perspective view of the vacuum cleaner which concerns on embodiment of this invention. The perspective view of the dust separator which concerns on embodiment of this invention. Sectional drawing of the dust separator which concerns on embodiment of this invention. Sectional drawing of the 2nd centrifugation part of the dust separator which concerns on embodiment of this invention. The top view of the 2nd centrifugation part of the dust separator which concerns on embodiment of this invention. The fragmentary sectional view of other examples of the dust separation device concerning the embodiment of the present invention. The partial side view of the other example of the dust separation apparatus which concerns on embodiment of this invention. The top view of the other example of the dust separation apparatus which concerns on embodiment of this invention. The top view of the other example of the dust separation apparatus which concerns on embodiment of this invention. The top view of the other example of the dust separation apparatus which concerns on embodiment of this invention.

  Embodiments of a dust separator and a vacuum cleaner according to the present invention will be described with reference to FIGS. 1 to 10.

  FIG. 1 is a perspective view of a vacuum cleaner according to an embodiment of the present invention.

  As shown in FIG. 1, the vacuum cleaner 1 according to this embodiment is a so-called canister type. The vacuum cleaner 1 includes a vacuum cleaner body 2 that can travel on a surface to be cleaned, and a pipe portion 3 that can be attached to and detached from the cleaner body 2. The tube portion 3 is fluidly connected to the cleaner body 2.

  The vacuum cleaner main body 2 includes a main body case 5, a pair of wheels 6 provided on the left and right sides of the main body case 5, a detachable dust separation device 7 disposed in the front half of the main body case 5, and a main body case 5, an electric blower 8 accommodated in the latter half of the electric power supply 5, a main body controller 9 that mainly controls the electric blower 8, and a power cord 11 that guides electric power to the electric blower 8.

  The cleaner body 2 drives the electric blower 8 with the electric power supplied through the power cord 11, and causes the negative pressure generated by the drive of the electric blower 8 to act on the pipe part 3. The vacuum cleaner 1 sucks air containing dust (hereinafter referred to as “dust-containing air”) from the surface to be cleaned through the pipe portion 3, separates the dust from the dust-containing air, and collects the separated dust. Then, clean air from which dust has accumulated and exhausted is exhausted.

  A main body connection port 12 is provided in the front portion of the main body case 5. The main body connection port 12 is a fluid inlet of the cleaner body 2. The main body connection port 12 fluidly connects the tube portion 3 to the dust separation device 7.

  The wheel 6 is a large-diameter traveling wheel that supports the cleaner body 2. The vacuum cleaner main body 2 includes a caster (not shown) provided on the bottom surface of the main body case 5 in addition to the wheels 6.

  The dust separator 7 separates dust from the dust-containing air flowing into the cleaner body 2, collects and accumulates it, and sends clean air from which dust has been removed to the electric blower 8.

  The dust separation device 7 has a substantially cylindrical appearance as a whole. The dust separator 7 is detachably mounted so as to lean on the cleaner body 2 in a posture in which the bottom part is inclined toward the front side of the cleaner body 2 and the top part is inclined toward the rear side of the cleaner body 2, that is, backwardly inclined. Yes.

  The electric blower 8 sucks air from the dust separator 7 and generates a negative pressure (suction negative pressure).

  The main body control unit 9 includes a microprocessor (not shown) and a storage device (not shown) for storing various arithmetic programs executed by the microprocessor, parameters, and the like. The storage device stores a plurality of preset operation modes. A plurality of operation modes set in advance correspond to the operation of the user who accepts input at the pipe section 3. Different input values (input values of the electric blower 8) are set in the respective operation modes. The main body control unit 9 selectively selects an operation mode corresponding to the operation content from a plurality of operation modes set in advance according to the operation of the user who receives an input through the tube unit 3. Moreover, the main body control part 9 reads the setting content of the selected operation mode from a memory | storage part, and operates the electric blower 8 according to the read setting content.

  The power cord 11 supplies power to the cleaner body 2 from a wiring plug connector (not shown, so-called outlet). A plug 14 is provided at the free end of the power cord 11.

  The pipe portion 3 sucks dust-containing air from the surface to be cleaned by the negative pressure acting from the cleaner body 2. Moreover, the pipe part 3 sends the sucked dust-containing air to the cleaner body 2. The pipe section 3 is fluidly connected to the connection pipe 19 as a joint that is detachably connected to the cleaner body 2, the dust collection hose 21 that is fluidly connected to the connection pipe 19, and the dust collection hose 21. A hand operating tube 22, a gripping portion 23 protruding from the hand operating tube 22, an operating portion 24 provided on the gripping portion 23, an extension tube 25 detachably connected to the hand operating tube 22, and an extension tube 25 And a suction port body 26 that is detachably connected.

  The connection pipe 19 is a joint that can be attached to and detached from the main body connection port 12. The connection pipe 19 is fluidly connected to the dust separation device 7 through the main body connection port 12.

  The dust collection hose 21 is a long and flexible substantially cylindrical hose. One end of the dust collection hose 21 (here, the rear end) is fluidly connected to the connection pipe 19. The dust collection hose 21 is fluidly connected to the dust separation device 7 through the connection pipe 19.

  The hand operation tube 22 relays the dust collection hose 21 and the extension tube 25. One end portion (here, the rear end portion) of the hand operation tube 22 is fluidly connected to the other end portion (here, the front end portion) of the dust collecting hose 21. The hand operating tube 22 is fluidly connected to the dust separating device 7 through the dust collecting hose 21 and the connecting tube 19 sequentially.

  The grip portion 23 is a portion that the user grips with his / her hand to operate the vacuum cleaner 1. The grip portion 23 protrudes from the hand operation tube 22 in an appropriate shape that can be easily gripped by the user's hand.

  The operation unit 24 includes a switch that receives a selection operation for each operation mode. Specifically, the operation unit 24 includes a stop switch 24 a that receives an operation stop operation of the electric blower 8 and an activation switch 24 b that receives an operation start operation of the electric blower 8. The stop switch 24 a and the start switch 24 b are electrically connected to the main body control unit 9. The user of the vacuum cleaner 1 can alternatively select the operation mode of the electric blower 8 by operating the operation unit 24. During operation of the electric blower 8, the start switch 24b also functions as an operation mode selection switch. During the operation of the electric blower 8, the main body control unit 9 switches the operation mode in the order of strong → medium → weak → strong →... Every time an operation signal is received from the start switch 24b. The operation unit 24 may include a plurality of switches, for example, a weak operation switch (not shown), a medium operation switch (not shown), and a strong operation switch (not shown) instead of the single start switch 24b. good.

  An extension tube 25 having a telescopic structure in which a plurality of cylindrical bodies are overlapped is an elongated and substantially cylindrical tube that can be expanded and contracted. One end portion (here, the rear end portion) of the extension tube 25 is provided with a joint structure that can be attached to and detached from the other end portion (here, the front end portion) of the hand operation tube 22. The extension pipe 25 is fluidly connected to the dust separation device 7 through the hand operation pipe 22, the dust collection hose 21 and the connection pipe 19.

  The suction port body 26 can run or slide on a surface to be cleaned such as a wooden floor or a carpet. The suction port body 26 has a suction port 28 on the bottom surface facing the surface to be cleaned in the running state or the sliding state. The suction port body 26 includes a rotatable rotary cleaning body 29 disposed in the suction port 28 and an electric motor 31 that drives the rotary cleaning body 29. One end portion (here, the rear end portion) of the suction port body 26 is provided with a joint structure that can be attached to and detached from the other end portion (here, the front end portion) of the extension pipe 25. This joint structure is a universal joint. The suction port body 26 is fluidly connected to the dust separator 7 through the extension pipe 25, the hand operation pipe 22, the dust collection hose 21, and the connection pipe 19. That is, the suction port body 26, the extension tube 25, the hand operation tube 22, the dust collection hose 21, the connection tube 19, and the dust separation device 7 are suction air passages that lead from the electric blower 8 to the suction port 28.

  When the electric blower 8 is stopped, the electric vacuum cleaner 1 starts the electric blower 8 when the operation of the user is received by the start switch 24b. For example, when the start switch 24b is operated when the electric blower 8 is stopped, the electric vacuum cleaner 1 operates the electric blower 8 in the strong operation mode first, and when the start switch 24b is operated again, the electric blower is operated. 8 is operated in the medium operation mode, and when the start switch 24b is operated three times, the electric blower 8 is operated in the weak operation mode, and the same is repeated thereafter. The strong operation mode, the medium operation mode, and the weak operation mode are a plurality of operation modes set in advance. The input value to the electric blower 8 is small in the order of the strong operation mode, the medium operation mode, and the weak operation mode. The started electric blower 8 exhausts air from the dust separation device 7 to make the inside thereof a negative pressure (suction negative pressure).

  The negative pressure acting on the dust separator 7 acts on the suction port 28 through the main body connection port 12, the connection tube 19, the dust collecting hose 21, the hand operation tube 22, the extension tube 25, and the suction port body 26 in order. . The vacuum cleaner 1 cleans the surface to be cleaned by sucking the dust on the surface to be cleaned together with air by the negative pressure applied to the suction port 28. The dust separating device 7 separates and accumulates dust from the dust-containing air sucked into the electric vacuum cleaner 1, and sends clean air after separating the dust to the electric blower 8. The electric blower 8 exhausts the air sucked from the dust separator 7 to the outside of the cleaner body 2.

  Next, the dust separator 7 will be described in detail.

  The dust separator 7 shown in FIG. 1 is attached to the cleaner body 2 in a backward tilting posture, but for the sake of simplicity, the dust separator 7 is shown upright below.

  FIG. 2 is a perspective view of the dust separator according to the embodiment of the present invention.

  FIG. 3 is a cross-sectional view of the dust separator according to the embodiment of the present invention.

  FIG. 4 is a cross-sectional view of the second centrifugal separator of the dust separator according to the embodiment of the present invention.

  FIG. 5 is a plan view of a second centrifugal separator of the dust separator according to the embodiment of the present invention.

  As shown in FIGS. 2 to 5, the dust separation device 7 of the vacuum cleaner 1 according to the present embodiment is a multistage separation device that separates dust contained in dust-containing air from air step by step. The dust separation device 7 separates fine dust from the first separation unit 34 that separates coarse dust from the dust-containing air guided to the dust separation device 7 and the dust-containing air containing fine dust that passes through the first separation unit 34. A second separation unit 35.

  The dust separation device 7 includes a top cover 36 that covers the second separation part 35, a handle part 38 that is provided on the top cover 36 and divides a space 37 into which fingers can be inserted, and a second separation part. And a noise suppression mechanism 39 that suppresses noise in a sound space 37 generated by air passing through 35.

  The first separator 34, the second separator 35, and the top cover 36 cooperate to adjust the appearance of the dust separator 7 into a substantially cylindrical shape.

  The first separator 34 is disposed on one side of the dust separator 7, specifically on the lower half side. The second separator 35 and the top cover 36 are disposed on the other side of the dust separator 7, specifically, the upper half side. The first separation part 34 and the second separation part 35 are aligned and stacked in the height direction of the cylindrical dust separation device 7.

  Note that the coarse dust separated by the first separation unit 34 is mainly fibrous dust such as lint and cotton dust or dust having a large mass such as sand particles. The fine dust separated by the second separation unit 35 is dust that is particulate or powdery and has a small mass.

  The 1st separation part 34 isolate | separates dust from dust-containing air with a centrifugal separation system (cyclone system). The first separation unit 34 includes a cup-shaped dust collection container 42 as an outer shell of the first centrifugal separation chamber 41, a cylindrical first filter unit 43 disposed in the dust collection container 42, and a dust collection container 42. A dust capturing cup 45 disposed inside and connected to the first filter portion 43. The first separation unit 34 includes a second handle 46 provided on the outer surface of the side wall of the dust collection container 42.

  The dust collecting container 42 is an outer shell of the lower half portion of the dust separating device 7 and also serves as an outer shell of the first centrifugal separation chamber 41 and the dust collecting chamber 47. An intake port 48 is provided on the side wall of the dust collecting container 42. The dust collecting container 42 includes a large-diameter portion 51 disposed at the open end of the dust-collecting container 42, an inclined portion 52 connected to the large-diameter portion 51 and constricted to a small diameter, and connected to the inclined portion 52. A small-diameter portion 53 that reaches the bottom wall of the dust collecting container 42 with a uniform diameter.

  The first filter unit 43 is housed in the dust collecting container 42 and is disposed substantially concentrically. The annular space that separates the first filter unit 43 and the dust collecting container 42 is a first centrifuge that centrifuges coarse dust by swirling the dust-containing air flowing into the first separating unit 34 from the air inlet 48 of the dust collecting container 42. This is a separation chamber 41.

  The first filter portion 43 is fixed to the second separation portion 35, protrudes into the dust collection container 42, and extends toward the bottom wall of the dust collection container 42. The first filter unit 43 fluidly connects the first centrifugal separation chamber 41 and the second separation unit 35. The first filter unit 43 includes a cylindrical frame body 55 and a first mesh filter 56 that surrounds the frame body 55. The first opening 57 of the frame 55 allows air to flow from the first centrifugal separation chamber 41 to the second separation portion 35. The side surface of the first filter portion 43, that is, the first mesh filter 56 faces the intake port 48.

  Naturally, the first mesh filter 56 is used in the period when the swirling flow in the first centrifugal separation chamber 41 is not sufficiently developed, such as immediately after the start of the electric blower 8 or when the electric blower 8 is stopped. Coarse dust is prevented from flowing from the separation part 34 to the second separation part 35 side.

  The dust capturing cup 45 is provided at an end portion of the first filter portion 43 that is close to the bottom wall of the dust collecting container 42, that is, a protruding end portion or a lower end portion. The bottomed cylindrical dust trapping cup 45 has a bottom wall connected to the first filter portion 43 and a side wall extending toward the bottom wall of the dust collecting container 42. That is, the dust capturing cup 45 is opened toward the bottom wall of the dust collecting container 42. The side wall of the dust catching cup 45 faces the inner peripheral surface of the dust collecting container 42 with a gap. The dust capturing cup 45 has a larger diameter than the first filter portion 43 and has a second opening 58 on the bottom wall connected to the first filter portion 43.

  A space separating the dust capturing cup 45 and the dust collecting container 42 is a dust collecting chamber 47 that accumulates the dust separated by the first separating portion 34. The air in the dust collection chamber 47 returns to the first centrifuge chamber 41 through the second opening 58.

  A second mesh filter 59 is provided in the second opening 58. The second mesh filter 59 may be coarse so that coarse dust (fibrous such as lint and cotton dust) that has flowed into the dust collection chamber 47 does not return to the first centrifugal separation chamber 41.

  When the dust collecting container 42 is removed from the dust separating device 7, the first filter part 43 and the dust catching cup 45 come out of the dust collecting container 42 along with the second separating part 35.

  The second separation unit 35 separates fine dust from the dust-containing air passing through the first separation unit 34 by a centrifugal separation method (cyclone method). The second separation unit 35 generates a swirling flow in the dust-containing air to separate the dust, and causes clean air to flow out from the central part of the swirling flow vortex. The second separation unit 35 includes a relay air passage 61 that guides the air that has passed through the first centrifugal separation chamber 41, a second centrifugal separation chamber 63 that separates fine dust from the air flowing from the relay air passage 61, and a second centrifugal separation And an exhaust air passage 64 that guides clean air flowing out of the chamber 63 to the electric blower 8.

  The second separation unit 35 is detachably connected to the dust collecting container 42 and closes the open end 42 a of the dust collecting container 42. Further, the second separation unit 35 supports the first filter unit 43 and the dust capturing cup 45 on the center line C of the dust collecting container 42.

  The second separation unit upper cover 65 corresponding to the outer shell of the second separation unit 35 has a cylindrical shape. A plurality of second centrifuge chambers 63 are arranged in an annular shape inside the second separation unit upper cover 65. An annular relay air passage 61 is disposed inside the plurality of second centrifugal separation chambers 63 arranged in an annular shape. Further, an exhaust air passage 64 is disposed inside the annular relay air passage 61 on the extended line of the center line C of the dust collecting container 42 or at the center of the cylindrical second separation portion 35. In other words, the second separation unit 35 includes a plurality of second centrifugal separation chambers 63, an annular relay air passage 61, and an exhaust air passage arranged in an annular shape in order from the radially outer side to the radially inner side of the second separator 35. 64 is a triple structure.

  The relay air passage 61 guides the air (dust-containing air) flowing in from the first filter unit 43 in a direction away from the dust collecting container 42 and guides it to the second centrifugal separation chamber 63.

  There are a plurality of second centrifuge chambers 63. The plurality of second centrifuge chambers 63 are arranged substantially in a ring shape along the inner periphery of the cylindrical second separation unit upper cover 65 or surrounding the relay air passage 61. Each of the second centrifuge chambers 63 includes a cylindrical wall 66 that generates a swirl flow and a frustoconical wall 67 that generates a spiral flow.

  The cylindrical wall 66 and the frustoconical wall 67 have centerlines that are substantially collinear. This center line, that is, the center line of the second centrifuge chamber 63 is arranged in parallel to the center line C of the cylindrical dust separator 7. When viewed in the entirety of the plurality of second centrifuge chambers 63, the center lines of the cylindrical wall 66 and the truncated cone-shaped wall 67 are arranged around the center line C of the dust separator 7 in an annular shape.

  The center line of the second centrifuge chamber 63 is closer to the center line C of the dust separator 7 as it is closer to the first separator 34, and is further away from the center line C of the dust separator 7 as it is closer to the top cover 36. It may be tilted. That is, when viewed in the entirety of the plurality of second centrifuge chambers 63, the center line of the second centrifuge chamber 63 has a vertex on the first separation portion 34 side and a conical surface extending toward the top cover 36 side. , May be inclined radially. In addition, the extension line of the center line of the second centrifuge chamber 63 passes through the top cover 36.

  The frustoconical wall 67 has an upper base having a large diameter and a lower base having a smaller diameter than the upper base. The upper base of the truncated cone-shaped wall 67 is disposed on the side far from the first separation portion 34, and the lower bottom is disposed on the side closer to the first separation portion 34. The cylindrical wall 66 has substantially the same diameter as the upper base of the frustoconical wall 67. The cylindrical wall 66 is connected to the upper base of the frustoconical wall 67.

  The cylindrical wall 66 is farther from the first separation part 34 than the frustoconical wall 67. A dust-containing air inlet 68 is provided on the side wall of the cylindrical wall 66. The introduction port 68 is disposed on the side surface of the cylindrical wall 66 and on the center side of the dust separator 7. The introduction port 68 is connected to the relay air passage 61.

  Further, the cylindrical wall 66 has a bottom plate at a portion farthest from the first separation portion 34. The bottom plate of the truncated cone-shaped wall 67 is provided with a tubular inner cylinder 69 that extends into the cylindrical wall 66 along the center line of the second centrifugal separation chamber 63. Inside the inner cylinder 69 is an exhaust port 71 for exhausting clean air separated from the dust-containing air in the second centrifugal separation chamber 63. That is, the exhaust port 71 allows clean air to flow out from the center of the swirling vortex generated by the second separation unit 35. The exhaust port 71 is connected to the exhaust air passage 64. The outer surface of the inner cylinder 69 faces the inner surface of the cylindrical wall 66. The annular space that separates the inner cylinder 69 and the cylindrical wall 66 swirls the flow of the dust-containing air flowing from the introduction port 68.

  Further, the cylindrical wall 66 is open at a portion closest to the first separation portion 34, and is connected to the opening at the upper bottom of the truncated cone-shaped wall 67 at this portion.

  The frustoconical wall 67 is reduced in diameter as it approaches the first separation part 34. The upper base of the truncated cone-shaped wall 67 has an opening connected to the cylindrical wall 66. The frustoconical wall 67 introduces a swirl flow generated between the cylindrical wall 66 and the inner cylinder 69 to generate a spiral flow. The bottom bottom of the truncated cone-shaped wall 67 has a disposal port 72 connected to the dust collecting container 42.

  The second centrifuge chamber 63 introduces dust-containing air from the introduction port 68. The dust-containing air flowing into the second centrifuge chamber 63 from the introduction port 68 swirls along the inner surface of the cylindrical wall 66 and further generates a spiral spiral flow toward the disposal port 72 along the inner surface of the frustoconical wall 67. Separating fine dust from the air. The separated fine dust is discharged from the disposal port 72 to the dust collecting container 42 side. The clean air from which the dust is separated flows on the center line of the second centrifuge chamber 63, that is, on the center lines of the cylindrical wall 66 and the truncated cone wall 67, and then passes through the inner cylinder 69 to the exhaust port 71. To the exhaust air passage 64. The exhaust port 71 allows air to flow toward the top cover 36.

  A dust trap umbrella 75 is provided at the tip of the disposal port 72 of the second centrifuge chamber 63. The dust trap umbrella 75 is provided at the base of the first filter portion 43 so as to serve as a partition wall that partitions the first separation portion 34 and the second separation portion 35. The outer diameter of the dust trap umbrella 75 is smaller than that of the second separation part 35 and larger than that of the first filter part 43.

  Further, the dust trap umbrella 75 abuts against the inclined portion 52 of the dust collection container 42 and closes the dust collection container 42. The large-diameter portion 51, the inclined portion 52, and the dust trap umbrella 75 of the dust collection container 42 define a fine dust collection chamber 76 that accumulates dust discharged from the second centrifugal separation chamber 63. The fine dust collecting chamber 76 is sandwiched between the inner surface of the large-diameter portion 51, the inclined surface of the inclined portion 52, and one surface 75a of the dust trapping umbrella 75, that is, the farther away from the second centrifugal chamber 63, that is, the second This is a ring-shaped space having a substantially wedge-shaped cross section that becomes narrower as the distance from the waste outlet 72 of the centrifugal separation chamber 63 increases.

  The exhaust air passage 64 is connected to the exhaust port 71 so as to cover the second centrifugal separation chamber 63 at a portion farthest from the first separation portion 34. The exhaust air passage 64 is directed toward the center of the second separation part 35 while being reduced in diameter from the outermost peripheral part connected to the exhaust port 71. The exhaust air passage 64 enters the center of the relay air passage 61 on the center line C of the dust collecting container 42. The exhaust air passage 64 is bent in a direction intersecting with an extension line of the center line C of the dust collecting container 42 (a center line of the dust separator 7) from a portion surrounded by the plurality of second centrifugal chambers 63, It reaches the second exhaust port 77 provided on the side wall of the second separation portion 35. The exhaust air passage 64 includes a recess 78 that is recessed toward the first separation portion 34 at a portion adjacent to the top cover 36. The exhaust air path 64 once directs the air flowing out from the exhaust port 71 of the second centrifugal separation chamber 63 toward the center of the dust separation device 7, and is once directed to the first separation unit 34 by the recess 78, and thereafter The direction of the flow is changed at a substantially right angle to the second exhaust port 77 and exhausted.

  The second separation unit upper cover 65, the second separation unit lower cover 79, and the top cover 36 are outer shells of the second separation unit 35. The second separation unit upper cover 65 and the second separation unit lower cover 79 cooperatively surround the second centrifugal separation chamber 63.

  The top cover 36 is integrated with the second separation unit upper cover 65. The top cover 36 is also a part of a wall that defines the exhaust air passage 64.

  The top cover 36 is provided with a recess 81 that is recessed toward the first separation portion 34. The recess 81 is recessed corresponding to the recess 78 of the exhaust air passage 64. In other words, the top cover 36 includes a recessed portion 81 that is recessed in a direction away from the handle portion 38 at a portion covered with the handle portion 38. The deepest portion 81 a of the recess 81 is disposed on the center line of the ring substantially drawn by the plurality of second centrifuge chambers 63, that is, on the center line C of the dust separator 7.

  The top cover 36 is provided with a second hinge mechanism 85 that supports the handle portion 38 so as to be swingable. The second hinge mechanism 85 is provided on the outer peripheral portion of the top cover 36. The second hinge mechanism 85 swings the handle portion 38 to increase the opening height of the space 37 between the handle portion 38 and the top cover 36. That is, the second hinge mechanism 85 makes it possible to set the opening height of the space 37 at a time lower than the average finger thickness. In this case, the second hinge mechanism 85 swings the handle portion 38 with a finger that enters the space 37 and enlarges the opening height of the space 37.

  The handle 38 is provided on the top of the top cover 36 (that is, the top of the dust separator 7). The user can firmly hold the dust separation device 7 by inserting his / her finger into the space 37 in the handle portion 38. The handle portion 38 partitions the space 37 in cooperation with the concave portion 81 of the top cover 36. The handle portion 38 covers at least the deepest portion 81 a of the recess 81. In other words, the handle portion 38 may cover the entire concave portion 81 or may cover a part of the concave portion 81 including the deepest portion 81a.

  The top cover 36 includes a clamp 86 that connects the dust separator 7 and the cleaner body 2. The cleaner body 2 is provided with a lock claw 87 for fixing the dust separator 7 to the cleaner body 2 in cooperation with the clamp 86.

  The clamp 86 follows the handle portion 38 that swings in the direction in which the opening height of the space 37 is enlarged, and comes off from the lock claw 87. On the other hand, when the dust separator 7 is attached to the cleaner body 2, the clamp 86 is independent. It swings and is caught by the lock claw 87.

  The clamp 86 connects the dust separating device 7 and the cleaner main body 2, and performs cleaning by releasing the connection between the cleaner main body 2 and the dust separating device 7 in conjunction with one movement of the handle 38. The dust separator 7 can be removed from the machine body 2.

  The noise suppression mechanism 39 is a plurality of holes 89 provided in the handle portion 38 and connected to the space 37. The hole 89 is disposed so as to face at least the deepest portion 81a.

  In addition, each hole 89 may be an elliptical hole, a polygonal hole, a linear or curved slit, in addition to a circular hole, or may be mixed.

  In the process of separating the dust from the dust-containing air by the dust separator 7, the air flow in the first separator 34 and the second separator 35 generates a sound, for example, an airflow sound or a wind noise. This sound is emitted from the outer shell of the dust separator 7, that is, the dust collecting container 42, the second separation unit upper cover 65, the second separation unit lower cover 79, and the top cover 36 to the periphery of the vacuum cleaner 1. Sound is also emitted from the top cover 36 into the space 37 in the handle portion 38 provided in the top cover 36. At this time, the dust separation device 7 according to the present embodiment allows a part of the sound emitted to the space 37 to be out of the space 37 not only from the inlet 37a into which the finger is inserted into the space 37 but also from the hole 89 of the noise suppression mechanism 39. To release. If there is no hole 89 in the noise suppression mechanism 39, the dust separation device 7 repeatedly reflects the sound emitted to the space 37 by the handle portion 38 and the top cover 36, and generates a large reverberation. Therefore, the dust separation device 7 releases part of the sound emitted to the space 37 from the hole 89 of the noise suppression mechanism 39 to the outside of the space 37, so that the sound emitted to the space 37 is separated from the handle portion 38 and the top portion. Repetitive reflection by the cover 36 is prevented, and the occurrence of echo is suppressed. Thereby, the dust separator 7 suppresses the noise in the space 37 of the sound released into the space 37.

  Next, another example of the dust separator 7 according to this embodiment will be described. In the dust separators 7A, 7B, 7C, 7D, and 7E described in each example, the same components as those in the dust separator 7 are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 6 is a partial cross-sectional view of another example of the dust separator according to the embodiment of the present invention.

  As shown in FIG. 6, the dust separation device 7A of the vacuum cleaner 1 according to this embodiment includes a noise suppression mechanism 39A instead of the noise suppression mechanism 39 of the dust separation device 7 shown in FIGS. . The noise suppression mechanism 39 </ b> A is swingably provided in the handle portion 38 to close the space 37 and block the sound emitted from the space 37. On the other hand, the noise suppression mechanism 39 </ b> A falls into the space 37 when the handle portion 38 is gripped. A blocking lid 91 is provided.

  In other words, the dust separation device 7 </ b> A includes a noise blocking cover 91 that closes the space 37 instead of providing the hole 89 in the handle portion 38. Even if the sound released into the space 37 is repeatedly reflected and reflected by the handle portion 38 and the top cover 36, the noise blocking lid 91 is confined so that it does not leak out from the inlet 37a of the space 37.

  The noise suppression mechanism 39A includes a hinge mechanism 92 that supports the noise shielding lid 91 on the handle portion 38 so as to be swingable, and a torsion spring 93 that generates a force for closing the noise shielding lid 91.

  The dust separation device 7A confines a part of the sound emitted into the space 37 in the space 37 by the noise blocking cover 91 of the noise suppression mechanism 39A, so that the sound emitted into the space 37 is separated from the handle portion 38 and the top cover. The reverberation caused by repetitive reflection at 36 is prevented from being released around the vacuum cleaner 1. Thereby, the dust separator 7 suppresses the noise in the space 37 of the sound released into the space 37.

  FIG. 7 is a partial side view of another example of the dust separator according to the embodiment of the present invention.

  As shown in FIG. 7, the dust separation device 7B of the vacuum cleaner 1 according to the present embodiment includes a top cover 36B having a flat portion 101 in a portion covered with a handle portion 38B, and a top portion covering the flat portion 101. And a handle portion 38B that bulges away from the cover 36B.

  The handle portion 38B may have a hole 89 (hole 89 indicated by a two-dot chain line) like the noise suppression mechanism 39 of the dust separation device 7, or the noise suppression mechanism 39A of the dust separation device 7A. May have a noise blocking cover 91 (noise blocking cover 91 indicated by a broken line).

  The dust separators 7 and 7A are configured so that a part of the sound of the noise suppression mechanism 39 is not generated in order to prevent the sound emitted from the top cover 36 from concentrating on the focus of the bowl-shaped recess 81 or the focus of the handle 38. The sound is prevented from being emitted from the hole 89 or leaking out by the noise blocking cover 91. These noise suppression mechanisms 39 and 39A have an effect of suppressing or confining the echo even when the top cover 36B has the flat portion 101, in other words, even when the top cover 36B has no focus. Thereby, the dust separation device 7 </ b> B suppresses noise in the space 37 of the sound released into the space 37.

  8 and 9 are plan views of other examples of the dust separator according to the embodiment of the present invention.

  As shown in FIGS. 8 and 9, the dust separators 7C and D of the vacuum cleaner 1 according to the present embodiment include a top cover 36 having a recess 81, a handle portion 38, noise suppression mechanisms 39C and 39D, It has.

  As shown in FIG. 8, the noise suppression mechanism 39 </ b> C is a hole 89 a that faces the deepest portion 81 a of the recess 81. The hole 89 </ b> C is connected to the space 37 in the handle portion 38. The hole 89C may be an elliptical hole, a polygonal hole, or a linear or curved slit in addition to a circular hole.

  Further, as shown in FIG. 9, the noise suppression mechanism 39 </ b> D is a notch 103 that faces the deepest portion 81 a of the recess 81.

  FIG. 10 is a plan view of another example of the dust separator according to the embodiment of the present invention.

  As shown in FIG. 10, the dust separator 7E of the vacuum cleaner 1 according to the present embodiment includes a top cover 36 having a recess 81, a handle 38E, and a noise suppression mechanism 39E.

  The noise suppression mechanism 39E is a handle portion 38E that avoids the deepest portion 81a of the concave portion 81 in plan view.

  The dust separators 7, 7 </ b> A, 7 </ b> B, 7 </ b> C, 7 </ b> D, 7 </ b> E and the vacuum cleaner 1 according to the present embodiment suppress noise in the sound space 37 generated by the air passing through the second separator 35. Mechanisms 39, 39A, 39B, 39C, 39D, and 39E are provided. for that reason. The dust separators 7, 7 </ b> A, 7 </ b> B, 7 </ b> C, 7 </ b> D, 7 </ b> E and the vacuum cleaner 1 suppress the sound emitted from the space 37 and reduce the driving sound.

  In addition, the dust separators 7 and 7B and the vacuum cleaner 1 according to the present embodiment include a hole 89 provided in the handle portion 38 and connected to the space 37. Therefore, the dust separators 7 and 7B and the vacuum cleaner 1 prevent the sound emitted into the space 37 from being repeatedly reflected by the handle portion 38 and the top cover 36 and suppress the occurrence of echoes.

  Furthermore, the dust separators 7A and 7B and the vacuum cleaner 1 according to the present embodiment include a noise blocking lid 91 that is provided in the handle portion 38 and closes the space 37. Therefore, even if the dust separators 7A and 7B and the vacuum cleaner 1 are repeatedly reflected and reflected by the handle portion 38 and the top cover 36, the dust separators 7A and 7B and the vacuum cleaner 1 are outside the entrance 37a of the space 37. Enclose so that it does not leak out.

  Furthermore, the dust separators 7 and 7A and the vacuum cleaner 1 according to the present embodiment include the noise suppression mechanisms 39 and 39A in the handle portion 38 that covers the deepest portion 81a of the recess 81. Therefore, while the dust separators 7 and 7A and the vacuum cleaner 1 are likely to generate echoes in the space 37, noise due to the echoes can be effectively suppressed by the noise suppression mechanisms 39 and 39A.

  Further, the dust separation device 7 and the vacuum cleaner 1 according to the present embodiment include a hole 89 that faces the deepest portion 81 a of the recess 81. Therefore, the dust separation device 7 and the vacuum cleaner 1 are likely to generate echoes in the space 37, while noise due to the echoes can be effectively suppressed by the noise suppression mechanism 39.

  Furthermore, the dust separators 7 and 7A and the vacuum cleaner 1 according to the present embodiment include the deepest portion 81a of the concave portion 81 disposed on the center line of the ring drawn by the plurality of second centrifuge chambers 63. Yes. Therefore, the dust separators 7 and 7A and the vacuum cleaner 1 are likely to generate echoes in the space 37 where the sounds generated by the plurality of second centrifugal chambers 63 are concentrated, while noises caused by the echoes are generated by the noise suppression mechanisms 39 and 39A. It can be effectively suppressed.

  Therefore, according to the dust separators 7, 7 </ b> A, 7 </ b> B, 7 </ b> B, 7 </ b> C, 7 </ b> D, 7 </ b> E and the vacuum cleaner 1 according to the present embodiment, the sound emitted from the space 37 as the gripping groove is suppressed and the driving sound is reduced. Can be made.

  The vacuum cleaner 1 according to the present embodiment is not limited to a canister type, but may be an upright type, a stick type, or a handy type.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Electric vacuum cleaner, 2 ... Vacuum cleaner main body, 3 ... Pipe part, 5 ... Main body case, 6 ... Wheel, 7, 7A, 7B, 7C, 7D, 7E ... Dust separator, 8 ... Electric blower, 9 ... Main body Control part, 11 ... Power cord, 12 ... Main body connection port, 14 ... Plug plug, 19 ... Connection pipe, 21 ... Dust collecting hose, 22 ... Hand control pipe, 23 ... Grip part, 24 ... Operation part, 25 ... Extension Pipe, 26 ... Suction port, 24a ... Stop switch, 24b ... Start switch, 28 ... Suction port, 29 ... Rotating cleaner, 31 ... Electric motor, 34 ... First separator, 35 ... Second separator, 36 ... Top Cover, 37 ... space, 37a ... inlet, 38, 38E ... handle, 39, 39A, 39C, 39D, 39E ... noise suppression mechanism, 41 ... first centrifuge chamber, 42 ... dust collecting container, 42a ... open end, 43 ... 1st filter part, 45 ... Dust capture cup, 46 ... 2nd handle , 47 ... Dust collection chamber, 48 ... Intake port, 51 ... Large diameter part, 52 ... Inclined part, 53 ... Small diameter part, 55 ... Frame body, 56 ... First mesh filter, 57 ... First opening, 58 ... Second Opening, 59 ... second mesh filter, 61 ... relay air passage, 63 ... second centrifuge chamber, 64 ... exhaust air passage, 65 ... second separation part upper cover, 66 ... cylindrical wall, 67 ... conical wall 68 ... Inlet port, 69 ... Inner cylinder, 71 ... Exhaust port, 72 ... Disposal port, 75 ... Dust trap, 76 ... Dust collecting chamber, 75a ... One surface, 77 ... Second exhaust port, 78 ... Recessed part, 79 ... Second separation part lower cover, 81 ... Recessed part, 81a ... Deepest part, 85 ... Second hinge mechanism, 86 ... Clamp, 87 ... Lock claw, 89, 89C ... Hole, 91 ... Noise blocking lid, 92 ... Hinge Mechanism 93 ... Torsion spring 101 ... Flat part 103 ... Notch

Claims (9)

A centrifugal separation unit for generating a swirl flow in the dust-containing air to separate the dust, and flowing out clean air from the center of the swirl vortex;
An outer shell covering the centrifuge,
A handle portion that is provided in the outer shell and defines a space into which fingers can be inserted;
A dust separation device comprising: a noise suppression mechanism that suppresses noise in the space generated by air passing through the centrifugal separator. The dust separation device according to claim 1, wherein the noise suppression mechanism is a hole provided in the handle portion and connected to the space. The noise suppression mechanism is swingably provided in the handle portion, closes the space, blocks sound emitted from the space, and falls into the space when the handle portion is gripped. The dust separator according to claim 1, further comprising a blocking lid. 4. The dust separation device according to claim 1, wherein the outer shell includes a recessed portion that is recessed in a direction away from the handle portion at a portion covered with the handle portion. 5. The outer shell has a flat portion in a portion covered by the handle portion,
4. The dust separation device according to claim 1, wherein the handle portion covers the flat portion and bulges in a direction away from the outer shell. 5. The outer shell includes a recess that is recessed in a direction away from the handle portion in a portion covered by the handle portion,
The dust separating apparatus according to claim 1, wherein the handle portion covers a deepest portion of the concave portion. The outer shell includes a recess that is recessed in a direction away from the handle portion in a portion covered by the handle portion,
The handle part covers the deepest part of the recess,
The dust separation device according to claim 2, wherein the hole is arranged to face the deepest portion. The centrifuge has a plurality of centrifuge chambers arranged in a ring shape,
The outer shell includes a recess that is recessed in a direction away from the handle portion in a portion covered by the handle portion,
The dust separating apparatus according to any one of claims 1 to 7, wherein a deepest portion of the concave portion is disposed substantially on a center line of a ring drawn by the plurality of centrifugal separation chambers. The vacuum cleaner body,
An electric blower that is housed in the vacuum cleaner body and generates negative pressure;
A vacuum cleaner comprising: the dust separation device according to any one of claims 1 to 8, which is fluidly connected to the electric blower.

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