JP2018198902A - Vacuum cleaner with cyclone separator - Google Patents

Abstract

To provide a vacuum cleaner in which the routing performance of a main body can be secured without reducing suction power.SOLUTION: A vacuum cleaner 1 includes a hose 5 coming in communication with a cyclone separator 6 through a connection port 10 formed in a main body 7 equipped with the cyclone separator 6 and making dust-containing air circulate inside. The cyclone separator 6 includes: a cylindrical swirling chamber 13 formed of an inflow port 18 and an exhaust port 19, swirling the dust-containing air and separating it into air and dust; an inflow pipe 15 for making the dust-containing air flow into the swirling chamber 13 through the inflow port 18; and an exhaust pipe 16 for exhausting the air from the inside of the swirling chamber 13 through the exhaust port 19. The connection port 10 is formed downward more than the center of the height direction of the main body 7. An opening surface of the connection port 10 is opposed to the opening surface of the upstream end of the inflow pipe 15, and is arranged adjacently. The inflow port 18 is arranged in the axial lower part of the swirling chamber 13 more than the exhaust port 19. The inflow pipe 15 is slanted to the axial direction of the swirling chamber 13.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vacuum cleaner provided with a cyclone separator.

  In a conventional vacuum cleaner equipped with a cyclone separator, a hose connection port is formed below the front surface of the vacuum cleaner body, and a suction air passage connecting the hose connection port and the inlet of the cyclone separator is connected to the lower part of the cyclone separator. Therefore, the vacuum cleaner main body can be downsized (for example, Patent Document 1).

Japanese Patent Laying-Open No. 2015-231580

  In the above-described conventional vacuum cleaner, since the inlet is formed in the axial direction of the cyclone separator, the intake air passage becomes long and a bent portion is generated. As a result, the pressure loss in the suction air passage increases and the suction force of the vacuum cleaner decreases. Therefore, in order to reduce pressure loss in the suction air passage, a hose connection port is formed above the front surface of the cleaner body, and the suction air passage is formed linearly. However, when a hose is connected to the upper front of the cleaner body, there is a problem that the routeability of the cleaner body is deteriorated.

  The present invention has been made to solve the above-described problems, and provides an electric vacuum cleaner equipped with a cyclone separation device that can secure the drawability of the main body without reducing the suction force. The purpose is to do.

  A vacuum cleaner according to the present invention includes a main body on which a cyclone separator is mounted, and a hose that communicates with the cyclone separator through a connection port formed in the main body and circulates dust-containing air therein. The separation device has an inlet and an outlet, and has a cylindrical swirl chamber that swirls dust-containing air into air and dust, and an inlet pipe that flows dust-containing air into the swirl chamber through the inlet And a discharge pipe for discharging air from the swirl chamber through the discharge port, the connection port is formed below the center in the height direction of the main body, and the opening surface of the connection port is upstream of the inflow tube. The inflow port is disposed below the discharge port in the axial direction of the swirl chamber, and the inflow pipe is inclined with respect to the axial direction of the swirl chamber. Yes.

  In the vacuum cleaner of the present invention, since the connection port and the inlet are arranged adjacent to the lower part of the vacuum cleaner body, the air passage connecting the hose and the inflow pipe is configured to be short, so that a reduction in suction force is suppressed. It is possible to secure the drawability of the main body.

It is a perspective view of the vacuum cleaner which concerns on Embodiment 1 of this invention. It is AA sectional drawing in FIG. 1 of the vacuum cleaner which concerns on Embodiment 1 of this invention. FIG. 1 is a cross-sectional view of the dust collection unit in FIG. 1 of the electric vacuum cleaner according to Embodiment 1 of the present invention. It is BB sectional drawing in FIG. 3 of the vacuum cleaner which concerns on Embodiment 1 of this invention. It is CC sectional drawing in FIG. 3 of the vacuum cleaner which concerns on Embodiment 1 of this invention. It is a top view of the vacuum cleaner which concerns on Embodiment 1 of this invention. It is sectional drawing of the dust collection unit of the vacuum cleaner which concerns on Embodiment 2 of this invention. It is sectional drawing of the dust collection unit of the vacuum cleaner which concerns on Embodiment 3 of this invention. It is DD sectional drawing in FIG. 8 of the vacuum cleaner which concerns on Embodiment 3 of this invention. It is sectional drawing which shows the modification of the dust collection unit of the vacuum cleaner which concerns on Embodiment 3 of this invention. It is sectional drawing of the dust collection unit of the vacuum cleaner which concerns on Embodiment 4 of this invention. It is sectional drawing of the dust collection unit of the vacuum cleaner which concerns on Embodiment 5 of this invention. It is EE sectional drawing in FIG. 12 of the vacuum cleaner which concerns on Embodiment 5 of this invention. It is sectional drawing which shows the modification of the dust collection unit of the vacuum cleaner which concerns on Embodiment 5 of this invention. It is a side view of the dust collection unit of the vacuum cleaner which concerns on Embodiment 6 of this invention. It is FF sectional drawing in FIG. 15 of the vacuum cleaner which concerns on Embodiment 6 of this invention. It is a top view which shows the modification of the vacuum cleaner which concerns on Embodiment 1 to 6 of this invention. It is sectional drawing which shows the modification of the vacuum cleaner which concerns on Embodiment 1 to 6 of this invention.

Embodiment 1 FIG.
With reference to FIG. 1, schematic structure of the vacuum cleaner which concerns on Embodiment 1 of this invention is demonstrated. The electric vacuum cleaner in Embodiment 1 is a canister type.

  The vacuum cleaner main body 1 includes a suction tool 2, a suction pipe 3, a connection pipe 4, a suction hose 5, and a main body unit 7 on which a dust collection unit 6 is mounted. The dust-containing air sucked from the suction tool 2 is sucked into the main unit 7 via the suction pipe 3, the connection pipe 4, and the suction hose 5 in order. Here, the dust-containing air indicates air containing dust.

  The suction tool 2 is for sucking dust-containing air from an opening formed downward. One end of the suction pipe 3 is connected to the suction tool 2. The connection pipe 4 has one end connected to the suction pipe 3 and the other end connected to the suction hose 5. The connection pipe 4 is provided with a handle 8. The handle 8 is for a user to hold at the time of cleaning. An operation switch 9 for operating the operation of the cleaner body 1 is provided on the front surface of the handle 8. The other end of the suction hose 5 is connected to a main body suction port 10 formed below the front surface of the main body unit 7. The suction hose 5 is a flexible hose having a rectangular cylindrical shape, for example. The suction hose 5 corresponds to the hose in the present invention. The main unit 7 corresponds to the main body in the present invention. Further, the main body suction port 10 corresponds to the connection port in the present invention.

  The main unit 7 separates dust from the dust-containing air in the dust collection unit 6 and discharges clean air to the outside of the main unit 7. Here, clean air refers to air from which dust has been removed. The dust collection unit 6 is detachably attached to the front of the main unit 7. The dust collection unit 6 is for swirling the dust-containing air taken inside, separating the dust from the dust-containing air by centrifugal force, and temporarily storing the separated dust. That is, the dust collection unit 6 has a cyclone separation function. The detailed structure and function of the dust collection unit 6 will be described later. The dust collection unit 6 corresponds to the cyclone separator in the present invention.

  Next, the relationship between the suction hose 5 and the dust collection unit 6 will be described with reference to FIG. A unit inlet 11 is formed in the dust collection unit 6. The unit inlet 11 is formed below the front surface of the dust collection unit 6 in a state where the dust collection unit 6 is attached to the main body unit 7. At this time, the opening surface of the unit inlet 11 and the opening surface of the main body suction port 10 face each other and are arranged adjacent to each other. The unit inlet 11 communicates with the main body suction port 10. That is, the dust collection unit 6 communicates with the suction hose 5 through the main body suction port 10 and the unit inflow port 11. A member such as packing may be provided between the unit inlet 11 and the main body suction port 10. That is, the unit inlet 11 and the main body suction port 10 need only be in a neighboring relationship. It should be noted that the unit inlet 11 may be disposed in the lower front of the main unit 7 like the main body suction port 10.

  With such a configuration, the suction tool 2, the suction pipe 3, the connection pipe 4, the suction hose 5, and the dust collection unit 6 communicate with each other, and the intake air path from the suction tool 2 to the inside of the dust collection unit 6. Is formed.

  Next, the relationship between the dust collection unit 6 and the main unit 7 will be described. A unit discharge port 12 is formed in the dust collection unit 6. The unit discharge port 12 is formed above the rear surface of the dust collection unit 6 in a state where the dust collection unit 6 is attached to the main body unit 7. The unit discharge port 12 communicates with the inside of the main unit 7. That is, the dust collection unit 6 communicates with the inside of the main unit 7 via the unit discharge port 12.

  The main unit 7 is formed with an exhaust port (not shown) that communicates the inside and the outside of the main unit 7. An exhaust air passage from the unit discharge port 12 to the exhaust port is formed inside the main unit 7. That is, the exhaust air passage is formed from the dust collection unit 6 to the outside of the main unit 7.

  The main unit 7 includes an electric blower (not shown), a circuit board, and a cord reel. The electric blower is for generating an air flow in the intake air passage and the exhaust air passage.

  Here, the basic operation of the vacuum cleaner 1 will be described. First, when the electric blower is driven in accordance with an operation on the operation switch 9, a suction force acts on the intake air passage, and dust-containing air is sucked from the suction tool 2. The dust-containing air sucked into the suction tool 2 passes through the intake air passage and is taken into the dust collection unit 6. In the dust collection unit 6, dust is separated from the dust-containing air. The clean air from which dust has been removed by the dust collection unit 6 passes through the exhaust air passage and is discharged from the exhaust port to the outside of the main unit 7.

  Next, the structure of the dust collection unit 6 will be described in detail with reference to FIG. The dust collection unit 6 includes a swirl chamber 13, a primary dust collection chamber 14, an inflow pipe 15, and a discharge pipe 16.

  The swirl chamber 13 has a cylindrical shape. The axis of the swirl chamber 13 is indicated by a one-dot chain line X in FIG. 3, and the axis X extends in the vertical direction. In the present invention, the axial direction of the swirl chamber 13 refers to the upward direction of the direction in which the axis X extends, and refers to the direction indicated by the arrow of the axis X in FIG.

  The axially upper end surface of the swirl chamber 13 is opened to form a primary opening 17. The axially lower end surface 13 a of the swirl chamber 13 is closed with the dust collection unit 6 mounted on the electric vacuum cleaner 1. An inflow port 18 is formed on the side surface of the swirl chamber 13 on the lower side in the axial direction. The inlet 18 is provided with a valve (not shown) for closing the unit inlet 11 when the operation of the cleaner body 1 is stopped. The swirl chamber 13 separates dust from the dust-containing air by swirling the dust-containing air flowing in from the inlet 18.

  Further, the end face 13 a is formed so as to be inclined so that the dust-containing air is directed upward in the axial direction of the swirl chamber 13 toward the downstream side of the dust-containing air flowing in from the inlet 18. That is, the end surface 13 a is inclined with respect to the axis of the swirl chamber 13.

  The primary dust collection chamber 14 is formed so as to cover at least a part of the upper side and the side of the swirl chamber 13 in the axial direction. The primary dust collection chamber 14 communicates with the swirl chamber 13 through the primary opening 17.

  The inflow pipe 15 is provided on the side surface of the swirl chamber 13 on the lower side in the axial direction. The inflow pipe 15 has one end connected to the inflow port 18 and the other end opened to form the unit inflow port 11. The inflow pipe 15 allows dust-containing air to flow into the swirl chamber 13 through the inflow port 18. Further, the inflow pipe 15 is formed so as to be inclined so that the dust-containing air is directed upward in the axial direction of the swirl chamber 13 toward the inflow port 18 formed on the downstream side. That is, the upstream end portion of the inflow pipe 15 is disposed below the swirl chamber 13 in the axial direction than the downstream end portion. At this time, the inflow pipe 15 is inclined with respect to the axis of the swirl chamber 13. The axis of the inflow pipe 15 is inclined with respect to the axis of the swirl chamber 13.

  The discharge pipe 16 has a cylindrical shape bent into an L shape. The discharge pipe 16 is for discharging the air in the swirl chamber 13 to the main unit 7. An upstream end 16 a of the discharge pipe 16 is provided so as to protrude into the inside of the swirl chamber 13 from the center of the end surface in the axial direction above the swirl chamber 13. A discharge port 19 is formed in the end portion 16a.

  The end portion 16 a is disposed above the inflow port 18 in the axial direction of the swirl chamber 13 in a state where the dust collection unit 6 is mounted on the vacuum cleaner 1. That is, the inflow port 18 is disposed below the discharge port 19 in the axial direction of the swirl chamber 13 in a state where the dust collection unit 6 is mounted on the vacuum cleaner 1.

  The downstream end 16 b of the discharge pipe 16 opens sideways to form a unit discharge port 12. That is, the discharge pipe 16 connects the inside of the dust collection unit 6 and the inside of the main unit 7. At this time, the inflow pipe 15 and the discharge pipe 16 are not provided on the same end face side of the swirl chamber 13. That is, the inflow pipe 15 and the discharge pipe 16 are not provided facing each other on a plane perpendicular to the axial direction of the swirl chamber 13. The inflow pipe 15 and the discharge pipe 16 are respectively arranged on different axial end face sides of the swirl chamber 13.

  Next, the function of the dust collection unit 6 will be specifically described. The dust-containing air flows into the inflow pipe 15 from the unit inlet 11, passes through the inlet 18, and flows into the swirl chamber 13 from the tangential direction of the swirl chamber 13. At this time, since the axially lower end surface 13 a of the inflow pipe 15 and the swirl chamber 13 is inclined with respect to the axis of the swirl chamber 13, the dust-containing air is directed obliquely upward with respect to the axial direction of the swirl chamber 13. Into the swirl chamber 13. The dust-containing air that has flowed into the swirl chamber 13 along the inner peripheral surface of the swirl chamber 13 rises while swirling along the inner wall surface of the swirl chamber 13. At this time, the dust-containing air swirls around the axis X of the swirl chamber 13. That is, the axis X of the swirl chamber 13 coincides with the axis of the swirling airflow.

  In this swirling airflow, centrifugal force acts on the dust contained in the dust-containing air, and the dust is separated from the dust-containing air and collected in the primary dust collection chamber 14. The clean air from which the dust has been removed flows into the discharge pipe 16 from the discharge port 19 and flows into the exhaust air passage in the main unit 7 from the unit discharge port 12. The clean air that has flowed into the exhaust air passage is discharged from the exhaust port to the outside.

  Next, the structure of the primary dust collection chamber 14 and the inflow pipe 15 will be described with reference to FIG. At least a part of the primary dust collection chamber 14 is formed around the swirl chamber 13. The primary dust collection chamber 14 has, for example, an elliptical cylindrical shape. The shape of the primary dust collection chamber 14 is not limited to this. The inflow pipe 15 is connected to the side of the swirl chamber 13 so that the dust-containing air flowing through the inside flows into the swirl chamber 13 from the tangential direction of the swirl chamber 13.

  Next, the arrangement of the discharge pipe 16 will be described with reference to FIG. The axial center of the end portion 16 a is arranged so as to coincide with the axial center O of the swirl chamber 13. The axis center O is on the axis X of the swirl chamber 13.

  Next, the positional relationship between the main unit 7 and the swirl chamber 13 will be described with reference to FIG. The broken lines in FIG. 6 indicate the positions of the swirl chamber 13, the inflow pipe 15, and the end 16 a of the discharge pipe 16 provided in the dust collection unit 6. In addition, an alternate long and short dash line Z in FIG. 6 indicates a center line in the width direction of the main unit 7. The main body suction port 10 is disposed at the center in the width direction of the main body unit 7. Further, when viewed from the height direction of the main unit 7, the central axes of the main body suction port 10 and the inflow pipe 15 coincide with each other, and the main body suction port 10 and the inflow pipe 15 are arranged on a substantially straight line. Further, the axial center O of the swirl chamber 13 does not overlap with the central axes of the main body suction port 10 and the inflow pipe 15. That is, the axis center O of the swirl chamber 13 is arranged at a position shifted from the center in the width direction of the main unit 7.

  In the present embodiment, the main body suction port 10 to which the suction hose 5 is connected is disposed below the main body unit 7 in the height direction, and the inflow port 18 is formed below the discharge port 19 in the axial direction of the swirl chamber 13. Since the main body suction port 10 and the unit inlet 11 are disposed adjacent to each other, the air passage connecting the main body suction port 10 and the inlet 18 is configured to be short, so that a reduction in suction force can be suppressed and the main body can be routed. Sex can be secured.

  Moreover, since the dust-containing air is inclined so that the inflow pipe 15 is directed upward in the axial direction of the swirl chamber 13 toward the inflow port 18, an upward flow can be given to the dust. With such a configuration, dust that tends to fall downward due to the influence of gravity is carried to the primary opening 17 formed axially above the swirl chamber 13 and collected in the primary dust collection chamber 14. Efficiency can be improved.

  Furthermore, since the dust-containing air is inclined so that the axially lower end surface 13a of the swirl chamber 13 is directed toward the downstream side in the axial direction, the upward flow can be given to the dust. It becomes possible. With such a configuration, dust that tends to fall downward due to the influence of gravity is carried to the primary opening 17 formed axially above the swirl chamber 13 and collected in the primary dust collection chamber 14. Efficiency can be improved.

  Further, since the main body suction port 10 and the unit inlet 11 are formed below the vacuum cleaner 1, the air path connecting the main body suction port 10 and the unit inlet can be configured to be short. Can be reduced in size.

  Further, since the inlet 18 is provided with a valve that closes the inlet 18 when the operation of the vacuum cleaner main body 1 is stopped, when the main body unit 7 is tilted for storage or carrying, or to collect the collected dust. When the dust collection unit 6 is detached from the main body unit 7, it is possible to prevent dust in the dust collection unit 6 from flowing backward and spilling out from the inlet 18. This valve may be provided inside the inflow pipe 15 or in the unit inlet 11.

  In addition, since the main body suction port 10 and the inflow pipe 15 are arranged substantially in a straight line, pressure loss in the air passage connecting the suction hose 5 and the swirl chamber 13 is reduced, and a reduction in suction force of the vacuum cleaner 1 is suppressed. can do.

Embodiment 2. FIG.
Next, a dust collection unit 100 according to Embodiment 2 of the present invention will be described with reference to FIG. The second embodiment is different from the first embodiment in the inclination direction of the inflow pipe 15. Hereinafter, unless otherwise described, the same reference numerals are given to the same components as those in the first embodiment, and description thereof will not be repeated.

  The axially lower end surface of the swirl chamber 13 is inclined such that the dust-containing air immediately after flowing into the swirl chamber 13 from the inlet 18 is directed downward in the axial direction of the swirl chamber 13 and then directed upward. Further, the inflow pipe 15 is inclined so that the dust-containing air is directed downward in the axial direction of the swirl chamber 13 toward the inflow port 18 formed on the downstream side. That is, the upstream end portion of the inflow pipe 15 is disposed above the swirl chamber 13 in the axial direction from the downstream end portion.

  With such a configuration, the dust-containing air flowing into the inflow pipe 15 from the unit inlet 11 flows into the swirl chamber 13 obliquely downward with respect to the axial direction of the swirl chamber 13. Immediately after flowing into the swirl chamber 13, the axially lower end surface of the swirl chamber 13 is inclined downward, so that it flows downward along the inclination of the end surface. Next, since the end face is inclined upward in the middle, it flows upward along the inclination of the end face. After that, ascending along the inner wall surface of the swirl chamber 13 rises.

  Even in the vacuum cleaner 100 configured as described above, the same effect as in the first embodiment can be obtained.

  Further, since the dust-containing air is inclined so that the dust-containing air is directed downward in the axial direction of the swirl chamber 13 toward the inlet 18, the dust-containing air is caused to collide with the axially lower end surface of the swirl chamber 13. It becomes possible to give an upward flow to the dust. With such a configuration, dust that tends to fall downward due to the influence of gravity is carried to the primary opening 17 formed axially above the swirl chamber 13 and collected in the primary dust collection chamber 14. Efficiency can be improved.

  Furthermore, since the dust-containing air is inclined so that the axially lower end surface of the swirl chamber 13 is directed downward in the axial direction of the swirl chamber 13 toward the downstream side, the dust-containing air is formed at the lowermost end of the swirl chamber 13. It is possible to apply an upward flow to the dust. With such a configuration, it is possible to improve the collection efficiency by transporting dust that tends to fall downward under the influence of weight to the primary opening 17 formed in the axially upper direction of the swirl chamber 13.

  Further, since the unit inlet 11 is disposed above the inlet 18 in the axial direction of the swirl chamber 13, when the main unit 7 is tilted for storage and carrying, or in order to throw away the collected dust, the dust collecting unit When detaching 6 from the main unit 7, it is possible to suppress dust in the dust collection unit 6 from flowing backward and spilling out from the unit inlet 11.

Embodiment 3 FIG.
Next, a dust collection unit 200 according to Embodiment 3 of the present invention will be described with reference to FIGS. The third embodiment is different from the first embodiment in the structure of the swirl chamber 13 and the arrangement of the discharge pipe 16. Hereinafter, unless otherwise described, the same reference numerals are given to the same components as those in the first embodiment, and description thereof will not be repeated.

  As shown in FIG. 8, the swirl chamber 13 includes a cylindrical portion 13b and a conical portion 13c. The cylindrical portion 13b has a hollow cylindrical shape. The cylindrical portion 13b is arranged so that the central axis is directed in the vertical direction. The conical portion 13c has a hollow conical shape with a tip portion cut off. The conical portion 13c is arranged in the vertical direction so that the central axis coincides with the central axis of the cylindrical portion 13b. The conical part 13c is provided so that the lower end part is connected to the upper end part of the cylindrical part 13b and extends upward from the upper end part of the cylindrical part 13b so that the diameter decreases toward the upper side. For this reason, the upper end portion of the conical portion 13c opens upward. This opening formed at the upper end of the conical portion 13 c is the primary opening 17.

  The discharge pipe 16 has an upstream end 16 a that opens upward in the axial direction of the swirl chamber 13 to form a discharge port 19. The end portion 16 a is provided so as to protrude into the swirl chamber 13 from below the swirl chamber 13 in the axial direction. The end portion 16 a is arranged above the inflow port 18 in the axial direction of the swirl chamber 13 in a state where the dust collection unit 200 is mounted on the vacuum cleaner 1. That is, the inflow port 18 is disposed below the discharge port 19 in the axial direction of the swirl chamber 13 in a state where the dust collection unit 200 is mounted on the electric vacuum cleaner 1.

  An end portion 16 b on the downstream side of the discharge pipe 16 opens sideways to form a unit discharge port 12. The inflow pipe 15 and the discharge pipe 16 are disposed below the swirl chamber 13 in the axial direction. That is, the inflow pipe 15 and the discharge pipe 16 are disposed on the same end face side of the swirl chamber 13.

  Next, the arrangement of the discharge pipe 16 will be described with reference to FIG. The axial center of the end portion 16 a is arranged so as to coincide with the axial center O of the swirl chamber 13. Further, the inflow pipe 15 and the discharge pipe 16 are opposed to each other on a plane perpendicular to the axial direction of the swirl chamber 13.

  Next, the function of the dust collection unit 200 will be specifically described. The dust-containing air that has flowed into the swirl chamber 13 from the unit inlet 11 toward the obliquely upward direction rises while swirling along the inner wall surface of the swirl chamber 13. At this time, the dust-containing air sequentially passes through the cylindrical portion 13b and the conical portion 13c. In this swirling airflow, centrifugal force acts on the dust contained in the dust-containing air, and the dust is separated from the dust-containing air and collected in the primary dust collection chamber 14.

  The clean air from which dust has been removed reaches the uppermost part of the swirl chamber 13 while swirling, collides with the upper wall surface of the primary dust collection chamber 14 and changes the traveling direction downward. The clean air descends along the axis of the swirl chamber 13 and flows into the discharge pipe 16 from the discharge port 19.

  Even in the dust collection unit 200 configured as described above, the same effects as those of the first embodiment can be obtained.

  Further, a part of the swirl chamber 13 is configured by the conical portion 13c, and the diameter of the conical portion 13c is reduced on the downstream side of the swirl chamber 13 where the swirl force is reduced. It is possible to improve dust separation and collection performance.

  Furthermore, the inflow pipe 15 and the discharge pipe 16 are arranged on the same end face side of the swirl chamber 13, and the swirling airflow generated in the swirl chamber 13 collides with the upper wall surface of the primary dust collection chamber 14 to change the traveling direction downward. Thus, the inflow of airflow into the primary dust collection chamber 14 can be suppressed. Thereby, the occurrence of the re-scattering phenomenon in which the dust collected in the primary dust collection chamber 14 is rolled up and returned to the swirl chamber 13 is suppressed, and the separation of dust and the reduction in the collection performance can be suppressed.

  As shown in FIG. 10, the inflow pipe 15 is inclined so that the dust-containing air is directed downward in the axial direction of the swirl chamber 13 toward the inflow port 18, and the axially lower end surface of the swirl chamber 13 is The dust-containing air immediately after flowing into the swirl chamber 13 from the inlet 18 may be inclined so as to be directed downward in the axial direction of the swirl chamber 13 and then directed upward.

Embodiment 4 FIG.
Next, a dust collection unit 300 according to Embodiment 4 of the present invention will be described with reference to FIG. The fourth embodiment is different from the third embodiment in the shape of the end surface of the swirl chamber 13. Hereinafter, unless otherwise described, the same reference numerals are given to the same components as those in the first embodiment, and description thereof will not be repeated.

  The axially lower end surface of the swirl chamber 13 has a spiral curved surface centered on the swirl chamber 13 axis so that the dust-containing air moves upward in the axial direction of the swirl chamber 13 as it goes downstream. It is formed with a spiral inclination. That is, the lower surface of the swirl chamber 13 is not a flat surface, but has portions with different heights in the same plane.

  Even in the dust collection unit 300 configured as described above, the same effects as those of the first embodiment can be obtained.

  Further, the lower surface of the swirl chamber 13 is formed so as to be spirally inclined so that the dust-containing air is directed upward in the axial direction of the swirl chamber 13 toward the downstream side, so that an air passage for the dust-containing air is formed and the upward flow Is strengthened. That is, dust that tends to fall downward due to the influence of gravity is easily carried to the primary opening 17 formed above the swirl chamber 13 and collected in the primary dust collection chamber 14, so that dust collection efficiency is improved. Can be improved.

  The inflow pipe 15 is inclined so that the dust-containing air is directed downward in the axial direction of the swirl chamber 13 toward the inflow port 18, and the axially lower end surface of the swirl chamber 13 extends from the inflow port 18 into the swirl chamber 13. The dust-containing air immediately after flowing in may be inclined downward in the axial direction of the swirl chamber 13 and then upward.

Embodiment 5. FIG.
Next, a dust collection unit 400 according to Embodiment 5 of the present invention will be described with reference to FIGS. 12 and 13. The fifth embodiment is different from the fourth embodiment in the structure of the swirl chamber 13. Hereinafter, unless otherwise described, the same reference numerals are given to the same components as those in the first embodiment, and description thereof will not be repeated.

  As shown in FIG. 12, a zero-order opening 20 is formed on the side wall of the swirl chamber 13. The zero-order opening 20 is formed between the cylindrical portion 13b and the conical portion 13c. The zero-order opening 20 is formed below the primary dust collection chamber 14 in the axial direction of the swirl chamber 13. That is, the zero-order opening 20 is formed on the downstream side surface of the swirl chamber 13.

  The dust collection unit 400 includes a zero-order dust collection chamber 21 having a cylindrical shape, for example. The shape of the zero-order dust collection chamber 21 is not limited to this. The zero-order dust collection chamber 21 is provided on the outer periphery of the swirl chamber 13. At least a part of the zero-order dust collection chamber 21 is provided below the primary dust collection chamber 14 in the axial direction of the swirl chamber 13. The zero-order dust collection chamber 21 communicates with the inside of the swirl chamber 13 through the zero-order opening 20 and collects dust flowing in from the zero-order opening 20.

  Next, the arrangement of the zero-order opening 20 and the zero-order dust collection chamber 21 will be described with reference to FIG. The zero-order opening 20 is formed by opening a part of the swirl chamber 13. The zero-order dust collection chamber 21 is provided on the outer periphery of the swirl chamber 13.

  Next, the function of the dust collection unit 400 will be specifically described. The dust-containing air that has flowed into the swirl chamber 13 from the unit inlet 11 toward the obliquely upward direction rises while swirling along the inner wall surface of the swirl chamber 13. At this time, relatively bulky dust is separated by the cylindrical portion 13b. The separated dust passes through the zeroth order opening 20 and is collected in the zeroth order dust collection chamber 21. Then, dust having a small volume is separated at the conical portion 13c, passes through the primary opening 17, and is collected in the primary dust collection chamber 14.

  Even in the dust collection unit 400 configured as described above, the same effects as those of the first embodiment can be obtained.

  Further, since the zero-order opening 20 is formed on the side surface of the swirl chamber 13 below the primary opening 17 in the axial direction, dust that tends to fall down due to the influence of gravity is collected from the zero-order opening 20 to the zero-order dust collection. Since it is collected in the chamber 21, the collection efficiency can be improved.

  As shown in FIG. 14, the inflow pipe 15 is inclined so that the dust-containing air is directed downward in the axial direction of the swirl chamber 13 toward the inlet 18, and the axially lower end surface of the swirl chamber 13 is The dust-containing air immediately after flowing into the swirl chamber 13 from the inlet 18 may be inclined so as to be directed downward in the axial direction of the swirl chamber 13 and then directed upward.

  Moreover, although the example in which the zero-order dust collection chamber 21 has a cylindrical shape has been described, the shape may be, for example, a polygonal shape such as a quadrangular prism or an elliptical cylindrical shape.

Embodiment 6 FIG.
Next, a dust collection unit 500 according to Embodiment 6 of the present invention will be described with reference to FIGS. 15 and 16. In the sixth embodiment, the structure of the inflow pipe 15 is different from that of the fifth embodiment. Hereinafter, unless otherwise described, the same reference numerals are given to the same components as those in the first embodiment, and description thereof will not be repeated.

  As shown in FIG. 15, the inflow pipe 15 is configured as a curved shape along the side wall of the swirl chamber 13. At this time, the inflow pipe 15 has a spiral shape centering on the axis of the swirl chamber 13. The inflow pipe 15 is formed to be inclined so as to go upward in the axial direction of the swirl chamber 13 toward the downstream side. As shown in FIG. 16, the inflow pipe 15 is formed so as to cover the outer periphery of the swirl chamber 13.

  Even in the dust collection unit 500 configured in this way, the same effect as in the first embodiment can be obtained.

  Moreover, since the inflow pipe 15 is configured as a curved shape along the side wall of the swirl chamber 13, a wind path for dust-containing air is formed, and the upward flow is strengthened. That is, dust that tends to fall downward due to the influence of gravity is easily carried to the primary opening 17 formed above the swirl chamber 13 and collected in the primary dust collection chamber 14, so that dust collection efficiency is improved. Can be improved.

  In Embodiments 1 and 2, the example in which the swirl chamber 13 has a cylindrical shape has been described. However, the swirl chamber 13 may include a cylindrical portion 13b and a conical portion 13c, respectively.

  Moreover, in above-mentioned Embodiment 3-6, although the turning chamber demonstrated the example comprised by the cylindrical part 13b and the cone part 13c, the turning room 13 whole is good also as what exhibits a cylindrical shape.

  Furthermore, in the above-described third to sixth embodiments, an example in which the upstream end 16a of the discharge pipe 16 is provided so as to protrude from the axially lower end surface of the swirl chamber 13 into the swirl chamber 13 is provided. Although described, the end portion 16a may be provided so as to protrude from the end surface in the axial direction of the swirl chamber 13 into the swirl chamber 13.

  In the above-described first to sixth embodiments, the discharge pipe 16 may have a cylindrical portion and a conical portion, and fine holes for venting the wall surface may be formed. This fine hole becomes the discharge port 19.

  Further, in the first to sixth embodiments described above, the example in which both the axially lower end surface of the swirl chamber 13 and the inflow pipe 15 are inclined with respect to the shaft of the swirl chamber 13 has been described. It may be inclined.

  In the first to sixth embodiments described above, the example in which the central axis O of the swirl chamber 13 is arranged at a position shifted from the center in the width direction of the main unit 7 has been described. However, as shown in FIG. O may be arranged at the center in the width direction of the main unit 7.

  Furthermore, in Embodiments 1 to 6 described above, the example in which the dust collection unit 6 is mounted on the main unit 7 so that the axis X of the swirl chamber 13 extends in the vertical direction has been described. As shown in FIG. The dust collection unit 6 may be arranged so that the axis X of the chamber 13 is inclined with respect to the vertical direction. That is, the axis X of the swirl chamber 13 may be inclined with respect to the height direction of the main unit 7. At this time, the positional relationship between the inlet 18 and the outlet 19 is determined based on the direction of the inclined axis X.

  Furthermore, in Embodiment 1-6 mentioned above, although the example of the canister type vacuum cleaner was demonstrated, you may apply this invention to another type of vacuum cleaner.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner body (electric vacuum cleaner), 2 suction tool, 3 suction pipe, 4 connection pipe, 5 suction hose (hose), 6 dust collecting unit (cyclone separator), 7 body unit (main body), 8 handle, 9 Operation switch, 10 Main body suction port (connection port), 11 Unit inflow port, 12 Unit discharge port, 13 Swivel chamber, 13a End surface, 13b Cylindrical portion, 13c Conical portion, 14 Primary dust collection chamber, 15 Inlet pipe, 16 Discharge Pipe, 17 Primary opening, 18 Inlet, 19 Outlet, 20 0th order opening, 210 0th order dust collection chamber, 100 Dust collection unit, 200 Dust collection unit, 300 Dust collection unit, 400 Dust collection unit, 500 Dust collection unit

Claims (11)

In a vacuum cleaner comprising: a main body equipped with a cyclone separator; and a hose that communicates with the cyclone separator via a connection port formed in the main body and circulates dust-containing air therein.
The cyclone separator is
A cylindrical swirl chamber in which an inflow port and a discharge port are formed, and the dust-containing air is swirled and separated into air and dust;
An inflow pipe for allowing the dust-containing air to flow into the swirl chamber through the inflow port;
A discharge pipe for discharging the air from the swirl chamber through the discharge port,
The connection port is formed below the center in the height direction of the main body, the opening surface of the connection port is opposed to and is adjacent to the opening surface of the upstream end of the inflow pipe,
The inflow port is disposed below the discharge port in the axial direction of the swirl chamber,
A vacuum cleaner in which the inflow pipe is inclined with respect to the axial direction of the swirl chamber.   The vacuum cleaner according to claim 1, wherein an upstream end portion of the inflow pipe is disposed below the inflow port in an axial direction of the swirl chamber.   The vacuum cleaner according to claim 2, wherein the inlet or the inlet pipe is provided with a valve that closes the inlet or the inlet pipe when the vacuum cleaner is stopped.   The vacuum cleaner according to claim 1, wherein an upstream end portion of the inflow pipe is disposed above the swirl chamber in an axial direction with respect to the inflow port. In a vacuum cleaner comprising: a main body equipped with a cyclone separator; and a hose that communicates with the cyclone separator via a connection port formed in the main body and circulates dust-containing air therein.
The cyclone separator is
A cylindrical swirl chamber in which an inflow port and a discharge port are formed, and the dust-containing air is swirled and separated into air and dust;
An inflow pipe for allowing the dust-containing air to flow into the swirl chamber through the inflow port;
A discharge pipe for discharging the air from the swirl chamber through the discharge port,
The connection port is formed below the center in the height direction of the main body, the opening surface of the connection port is opposed to and is adjacent to the opening surface of the upstream end of the inflow pipe,
The inflow port is disposed below the discharge port in the axial direction of the swirl chamber,
The vacuum cleaner in which an axially lower end surface of the swirl chamber is inclined with respect to the axial direction of the swirl chamber.   The vacuum cleaner according to claim 5, wherein at least a part of the end surface is inclined upward in the axial direction of the swirl chamber as it goes downstream of the dust-containing air flowing in from the inflow pipe.   The vacuum cleaner according to claim 5 or 6, wherein at least a part of the end face is inclined downward in the axial direction of the swirl chamber as it goes downstream of the dust-containing air flowing in from the inflow pipe.   The vacuum cleaner according to any one of claims 5 to 7, wherein the end surface has a spiral curved surface centering on an axis of the swirl chamber. A zero-order opening formed in a part of the side wall of the swirl chamber, and a zero-order dust collection chamber that communicates with the swirl chamber through the zero-order opening and collects dust;
The vacuum cleaner according to any one of claims 1 to 8, wherein the zero-order dust collection chamber is provided on an outer peripheral portion of the swirl chamber.   The vacuum cleaner according to any one of claims 1 to 9, wherein the inflow pipe has a spiral shape centering on an axis of the swirl chamber.   The vacuum cleaner according to any one of claims 1 to 10, wherein the swirl chamber has a cylindrical portion and a conical portion.

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