JP2005177100A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner having a small-size and easy-to-use cyclone separation type dust collection part. <P>SOLUTION: This vacuum cleaner is provided with a cyclone separation cylinder 104 catching dust centrifugally separated and a spiral partition 132 from the root side to the tip side of the inner cylinder 131 which is provided at the cylinder part 134 of an inner cylinder 131 provided inside the cyclone separation cylinder 104. The height of the partition 132 and the height of the cylinder part 134 are formed approximately equal to each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vacuum cleaner.

  In general vacuum cleaners, the dust-containing air sucked from the suction port is guided to the main body of the vacuum cleaner, and collected through the dust collecting section in the main body of the vacuum cleaner. It is the structure which exhausts to. The dust collection unit is configured to collect dust by filtration using a paper filter and collect dust or to collect dust by centrifugation using a cyclone separation cylinder.

  The dust collecting part of the cyclone separation type vacuum cleaner guides the air flow including dust from the hose to the electric blower side, separates the dust by centrifugal separation with the cyclone separation cylinder, and puts it in the dust collection case below it It is configured to collect and collect dust. Then, the dust collecting case and the cover of the cyclone separating cylinder are shared, and the dust is discarded by opening the lid. In addition, a filter made of non-woven fabric is built inside the lid, and the filter communicates with the cyclone separation cylinder and the dust collection case independently, and by switching this, when there is a flow of air from the cyclone separation cylinder, In some cases, dust is compressed in the dust collection case by flowing from the dust collection case to the electric blower.

  In addition, the suction pipe that sucks in the gas containing dust, and a partition member that is disposed with a certain gap from the inner wall separates the dust from the gas, and a swirling unit that turns the gas along the inner wall. A cyclone separation cylinder divided into an accumulation case for accumulation and a discharge pipe (inner cylinder) for discharging gas are provided. In addition, an inclined surface for swirling and lowering the gas is provided inside the upper surface of the swirling portion, and the inclined surface is spiral to reduce the pressure loss of the gas and improve the suction power.

JP 2003-79546 A

JP 2003-200082 A

  It is important that a vacuum cleaner used in a general household can absorb dust well, is small and easy to handle, and it is necessary to reduce the size of the dust collecting part and simplify the operation of discarding the captured dust. The dust collection part that captures dust with one cyclone separation cylinder captures both coarse dust and fine dust together. Therefore, when discarding the captured dust, the fine dust is easily scattered and the dust disposal operation is troublesome. . Moreover, if it is going to improve dust capture (dust collection) performance, a cyclone separation cylinder will become long and will enlarge.

  The cyclone separation type dust separation device (dust collecting part) with the cyclone separation cylinder arranged horizontally requires a special flow path to give a swirl flow to the cyclone separation chamber inlet, and is configured to be small and easy to handle. Is difficult. In addition, because the filter on the cyclone separation cylinder side and the dust collection case side are used separately, the suction work rate, which is one of the indicators of the dust suction capability, such as fast clogging or large filter area cannot be obtained Is difficult to increase.

  Further, in the case where dust is stored in the cyclone separation cylinder, fine dust must be removed by a filter, and it is difficult to slow down clogging of the filter.

  Moreover, it is difficult to prevent hair, pet hair such as dogs and cats, lint, etc. from wrapping around the inner cylinder that discharges air from the cyclone separation cylinder. Furthermore, even if hair, pet hair such as dogs and cats, and lint are separated into the dust collection case once, they are disturbed in the dust collection case and resprayed to the cyclone separation cylinder. Thus, it is difficult to prevent winding around the cylindrical portion of the inner cylinder.

  One object of the present invention is to propose a vacuum cleaner having a cyclone-separated dust collecting portion that is small and easy to handle.

  Another object of the present invention is to propose a vacuum cleaner having a cyclone-separated type dust collecting portion that has a low resistance, that is, has a high suction work rate and a high dust capturing (dust collecting) performance. .

  Still another object of the present invention is to propose an electric vacuum cleaner equipped with a cyclone separation type dust collecting part that can reliably hold captured fine dust so as not to be scattered.

  Still another object of the present invention is to provide a cyclone separation type dust collecting portion that prevents hair, pet hair such as dogs and cats, lint, etc. from being wrapped around the inner cylinder that discharges air from the cyclone separation cylinder. It is to propose a vacuum cleaner equipped.

  The present invention provides an electric cleaning system in which an inlet portion for introducing dust-containing air is provided at a lower portion of a cyclone separation cylinder that removes dust-containing air by centrifugation, and a communication port that reaches the dust collecting case is provided at the upper portion of the cyclone separation cylinder. In the machine, a spiral partition is provided from the base side to the tip side of the inner cylinder in the inner cylinder provided in the cyclone separation cylinder, and the height of the partition and the height of the inner cylinder It is characterized by having substantially the same length.

  In addition, a cyclone separation cylinder that removes dust-containing air by centrifugal separation is attached with an inlet portion for introducing the dust-containing air and an inner cylinder configured as a lid on the outer cylinder of the cyclone separation cylinder, and the cyclone separation is performed through the inner cylinder. In the vacuum cleaner that exhausts air from the cylinder, a spiral partition is provided from the root side to the tip side of the inner cylinder in the cylindrical portion of the inner cylinder that is provided inside the cyclone separation cylinder, and the outer cylinder is arranged along the partition. An airtight surface of the cylinder and the inner cylinder is provided.

  In addition, the cyclone separation cylinder that removes dust-containing air by centrifugal separation, the inlet part into which the dust-containing air flows, and the cyclone separation cylinder are attached to the outer cylinder of the cyclone separation cylinder with a lid-shaped inner cylinder, In the vacuum cleaner that exhausts the air of the cyclone separation cylinder through the inner cylinder, a spiral partition wall from the root side to the tip side of the inner cylinder, the inlet of the inner cylinder provided in the cyclone separation cylinder, and the inlet A guide wall is provided from the part side to the cylinder part, and an opening for exhausting air from the cyclone separation cylinder is provided in the guide wall and the cylinder part.

  According to the present invention, a cyclone separating cylinder that generates a swirling flow upward, and a dust collecting case disposed on this side surface and mounted on the main body of the vacuum cleaner, a small and easy-to-handle cyclone separating dust collecting portion is provided. Can be realized.

  Further, according to the present invention, since the partition wall of the inner cylinder is lifted upward in a spiral shape, even in a vacuum cleaner that operates at a low air volume, the dust is given a strong action of rising inside the cyclone separation cylinder, and the dust is removed. It can be transported to a dust collection case.

  Furthermore, according to the present invention, the suction force of the vacuum cleaner can be prevented by preventing hair, pet hair such as dogs and cats, lint, etc. from wrapping around the inner cylinder that discharges air from the cyclone separation cylinder. It is possible to realize a cyclone separation type dust collecting part that is difficult to decrease.

  Furthermore, according to the present invention, maintenance performance is prevented by preventing hair, pet hair such as dogs and cats, lint, etc. from wrapping around the cylindrical portion of the inner cylinder that discharges air from the cyclone separation cylinder. An improved cyclone separation type dust collecting part can be realized.

  A first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view of a vacuum cleaner showing an embodiment of the present invention. FIG. 2 is a perspective view of the cleaner body. FIG. 3 is a perspective view showing a state in which the upper cover of the cleaner body is opened. FIG. 4 is a perspective view showing a state where the upper lid of the cleaner body is opened and the cyclone separating cylinder and the dust collecting case are removed. FIG. 5 is a plan view with the upper lid and the upper case removed. FIG. 6 is a schematic diagram showing the flow of air in the cleaner body.

  As shown in FIG. 1, the vacuum cleaner in this embodiment includes a vacuum cleaner body 1, a hose 2, a hand operation tube 3, an expansion joint pipe 4, and a suction port 5, and the vacuum cleaner body 1 and the hand operation tube 3 are hose. 2, and the suction port 5 is connected to the local operation pipe 3 via the expansion joint pipe 4 for use.

  The vacuum cleaner body 1 incorporates an electric blower (described later), and sucks in dust from the intake flow by suctioning from the suction port 5 by the suction force of the electric blower. Then, the vacuum cleaner main body 1 is sucked through the hand control tube 3 and the hose 2, dust is collected (collected) by the cyclone separation type dust collecting section, and then exhausted outside the machine.

  As shown in FIGS. 2 to 5, the vacuum cleaner main body 1 has a dust collection case 105 integrated with a cyclone separation cylinder 104 mounted vertically between the lower case 101 and the upper lid 102 so as to be detachable. A filter case 113, an auxiliary filter 112 attached to the filter case 113, an electric blower 107, and a cord reel 110 are housed between the 101 and the upper case 150. The lower case 101 includes a traveling wheel 208 and a guide wheel (not shown) for causing the cleaner body 1 to travel on the floor surface. Furthermore, a handle 207 is attached to the upper part of the upper case 150 so as to be able to rotate, and the cleaner body 1 can be carried.

  The upper lid 102 is attached to the upper rear portion of the upper case 150 so as to be rotatable. In a state where the upper lid 102 is closed, the inlet pipe 115 and the hose connection port 116 of the cyclone separation cylinder 104 are in contact with each other in an airtight state, and the dust collecting case 105 and the filter frame 140 are in contact with each other in an airtight state. And the filter frame 163 are in an airtight state, and the filter frame 163 and the filter case 113 in which the auxiliary filter 112 is housed are in an airtight state. Further, the exhaust port 120 at the lower part of the cyclone separation cylinder 104 and the communication passage 145 provided at the lower part of the dust collecting case 105 are in contact with each other in an airtight state. Here, the axial direction of the cyclone separating cylinder 104 is oriented in the vertical direction, but it may be inclined in the oblique direction instead of the vertical direction.

  As shown in FIG. 6, the vacuum cleaner main body 1 has a centrifugal separation action by flowing dust-containing air from the inlet pipe 115 into the cyclone separation cylinder 104 through the hose 2 and swirling from the lower side to the upper side. And the dust is conveyed from the upper communication port 117 to the dust collecting case 105 through the upper opening 118. Part of the exhaust from the cyclone separation cylinder 104 passes through the inner cylinder 131 and is exhausted from an exhaust port 120 provided in the lower part of the cyclone separation cylinder 104. Part of the air that has flowed into the cyclone separation cylinder 104 flows into the dust collection case 105, and dust is captured by the first filter 106. The exhaust from the dust collecting case 105 is sucked into the electric blower 107 through the dust collecting case exhaust port 144 located behind the first filter 106 through the second filter 161 and the auxiliary filter 112 in this order. At this time, the exhaust from the cyclone separation cylinder 104 is combined with the exhaust from the dust collecting case exhaust port 144 through the communication passage 145 and the cyclone outlet 146 from the exhaust port 120, the second filter 161, and the auxiliary The electric blower 107 is sucked through the filter 112. The exhaust from the electric blower 107 passes through the filter 108, partly through an exhaust passage (not shown), partly flows through the cord reel 110, cools them, and then is discharged outside the apparatus. .

  In other words, the airflow A flowing out of the exhaust port 120 and the airflow B flowing out of the dust collecting case exhaust port 144 are separated by the cyclone separation cylinder 104 on the upstream side of the second filter 161. Merge and flow into the second filter 161. This air flow is sucked into the electric blower 107 after fine dust is collected by the second filter 161.

  Here, the inner surface of the cyclone separating cylinder 104 and the inner surface of the dust collecting case 105 are subjected to a clear UV curable coating treatment. For this reason, when dust flows into the cyclone separation cylinder 104, the dust is centrifuged and flows into the dust collection case 105, the dust is deposited on the surface of the cyclone separation cylinder 104 and the inner surface of the dust collection case 105. In the case of collision and rubbing, it is difficult for scratches to be made on the surface, making it difficult for dirt to adhere, and at the same time improving friction resistance and contamination resistance. For this reason, even when the outer cylinder 135 of the cyclone separation cylinder 104 and the dust collection case 105 are made of a transparent plastic material, the degree of dust accumulation can be visually confirmed.

  Further, if the upper lid 102 is made of a transparent plastic material, even when the upper lid 102 covers the cyclone separating cylinder 104 or the dust collecting case 105 when the upper lid 102 is closed as shown in FIG. The state of accumulation can be confirmed visually.

  Further, the cyclone separation cylinder 104 and the dust collection case 105 are molded using an antistatic resin agent, or dust is applied to the cyclone separation cylinder 104 and the dust collection case 105 by applying an antistatic agent to these surfaces. Is less likely to adhere, and the number of cleanings can be reduced.

  Next, with reference to FIG. 5, the arrangement inside the cleaner body 1 will be described. The hose connection port 116 is located at the center in the width direction of the cleaner body 1 as viewed from above, and is disposed on the front surface of the cleaner body 1. The central axis of the cyclone separation cylinder 104 is shifted from the center in the width direction, and the inlet pipe 115 and the hose connection port 116 for allowing air to flow in a substantially tangential direction of the cyclone separation cylinder 104 are arranged in a straight line. Yes. The dust collection case 105 is installed on the opposite side of the width direction from the center axis of the cyclone separation cylinder 104. Similarly, the electric blower 107 is installed on the side opposite to the center axis of the cyclone separating cylinder 104 in the width direction, and an auxiliary filter 112 and a filter case 113 for housing the auxiliary filter 112 are provided on the front surface thereof. . The cord reel 110 is installed beside the electric blower 107 and installed in the same direction as the central axis of the cyclone separating cylinder 104 in the width direction.

  By arranging in this way, the length of the main body can be shortened, and a small size and light weight can be achieved. Further, since it is not necessary to provide a bend or the like at the inlet portion of the cyclone separation cylinder 104, an effect of reducing loss can be obtained.

  Here, the direction in which the dust centrifuged in the cyclone separation cylinder 104 flows out of the cyclone separation cylinder 104 through the communication port 117 is a turning direction in the cyclone separation cylinder 104 and a tangential direction of the cyclone separation cylinder 104. is there. For this reason, in the present embodiment, both the communication port 117 of the cyclone separation cylinder 104 and the upper opening 118 of the dust collection case 105 communicating with the communication port 117 are opened and closed in the dust collection case 105. It can arrange | position in the front side (hose connection port part 116 side) of the vacuum cleaner main body 1 furthest from the filter 106. Here, the dust centrifuged in the cyclone separation cylinder 104 is accumulated from the vicinity of the first filter 106 that opens and closes, and the communication port 117 of the cyclone separation cylinder 104 and the upper part of the dust collecting case 105 that communicates with the communication port 117. Since the particles sequentially accumulate on the opening 118 side, it is difficult for the dust to block the communication port 117 and the upper opening 118 until the dust collecting case 105 is filled with dust. That is, the volume of the dust collecting case 105 can be effectively used.

  Here, details of the cyclone separating cylinder 104 and the dust collecting case 105 will be described with reference to FIGS. 7 is an external perspective view of the cyclone separating cylinder 104 and the dust collecting case 105, FIG. 8 is a cross-sectional view of the cyclone separating cylinder 104 and the dust collecting case 105 taken along line AA in FIG. 5, and FIG. BB sectional view of the case 105 shown in FIG. 5, FIG. 10 is a CC sectional view of the cyclone separating cylinder 104 and the dust collecting case 105 shown in FIG. 5, FIG. 11 is a DD sectional view of FIG. Is a side view of the cyclone separating cylinder 104 and the dust collecting case 105 as viewed from the exhaust side, FIG. 13 is a plan view of the cyclone separating cylinder 104 and the dust collecting case 105 as viewed from below, and FIG. 14 is an upstream view of the auxiliary filter 112. It is a side view when seen from.

  First, the flow of dust will be described. The dust-containing air flows into the dust collection case 105 from the communication port 117 of the cyclone separation cylinder 104 through the upper opening 118 provided in the upper part of the dust collection case 105. Here, a relatively large amount of dust in the air is dammed up by the mesh filter 106a and accumulates from before the mesh filter 106a. Fine dust is captured by the first filter 106, and finer dust is collected by the second filter 161. Dust that has passed through the second filter 161 flows to the auxiliary filter 112.

  Further, the net filter 133 functions so as to prevent fiber dust or paper dust on the airflow flowing out from the inner cylinder 131 from blowing through. Finer dust that has passed through the mesh filter 133 is collected by the second filter 161 as described above, and the dust that has passed through the second filter 161 flows to the auxiliary filter 112.

  In the outer cylinder 135 of the cyclone separation cylinder 104, an inlet pipe 115 as an air intake is provided below the center of the length in the central axis direction of the cyclone separation cylinder 104, and the cyclone separation cylinder 104 having a substantially cylindrical shape is provided. It is installed so that air can enter in the direction of tangential line. A communication port 117 is provided above the center of the cyclone separation cylinder 104 to allow air to flow into the dust collecting case 105 together with dust. An inner cylinder 131 is provided at the lower part of the cyclone separation cylinder 104 and is connected to the lower exhaust port 120. Here, if the inner cylinder cap 152 is attached to the inner cylinder 131 with a screw or the like, an elastic seal member 153 is attached between the exhaust port 120 and the communication passage 145, and the outer cylinder 135 and the inner cylinder 131 are attached via the elastic seal member 151. Easy to be airtight. The inner cylinder 131 includes a cylinder part 134, a partition wall 132 spirally wound around the cylinder part 134, a guide wall 137 connecting the inlet pipe 115 and the cylinder part 134, and an outer wall 139 disposed on the outer peripheral side of the partition wall 132. The height of the highest part of the partition wall 132 is substantially equal to the height of the cylindrical part 134. Here, the height of the guide wall 137 is also substantially equal to the height of the cylindrical portion 134. In addition, a resin fiber net is formed as a net filter 133 in the cylinder part 134 by integral molding with the cylinder part 134. As shown in FIG. 8, the mesh filter 133 may be configured as a cylindrical portion on the side surface of the cylindrical portion 134, or may be configured as a cylindrical portion on the side surface of the cylindrical portion 134 and the guide wall 132.

  Here, since the cylindrical portion 134 of the inner cylinder 131 is configured to be substantially equal to the height of the highest portion of the partition wall 132, hair and hair are added to the cylindrical portion 134 of the inner cylinder 131 that discharges air from the cyclone separating cylinder 104. It can prevent the hair of pets, such as dogs and cats, and lint from wrapping around. Further, even if dust such as hair tries to wrap around the cylindrical portion 134 of the inner cylinder 131, it cannot wrap around the cylindrical portion 134, and these dusts are swirling airflows that rise in the cyclone separating cylinder 104. Therefore, it moves upward and is conveyed to the dust collection case 105. For this reason, since the reduction | decrease of the exhaust-port area of the inner cylinder 134 can be prevented, the suction force of a cleaner is hard to fall. Further, since long dust such as hair does not stay in the cyclone separating cylinder 104 but is conveyed to the dust collecting chamber, the turbulence of the air current in the cyclone separating cylinder 104 can be suppressed, so the suction force of the vacuum cleaner is reduced. It can be difficult.

  Furthermore, by preventing hair, pet hair such as dogs and cats, lint, etc. from wrapping around the tube part 134 of the inner cylinder 131, a cyclone separation type dust collecting part 103 with improved maintenance performance can be realized. . If the configuration of the inner cylinder 131 is as described above, when the dust-containing air is introduced from the top to the bottom of the cyclone separation cylinder 104, or the cyclone separation cylinder 104 is placed horizontally, the central axis of the swirling flow is substantially The same effect can be selected even when arranged horizontally.

  Here, the net filter 133 functions to prevent dust such as fiber dust and paper from blowing through the inner cylinder 131. However, when the net filter 133 is also provided on the guide wall 132, The area can be increased, and clogging of the mesh filter 133 can be delayed.

  Here, when the inside of the cyclone separation cylinder 104 or the net filter of the inner cylinder 131 becomes dirty, the upper lid 102 is opened upward, and in this state, the handle 123 at the upper part of the dust collecting case 105 is held to hold the cyclone separation cylinder 104. Then, the dust collecting case 105 is taken out. Here, the lever 142 is pushed downward to open both the filter frame 140 and the filter frame 163 from the dust collecting case 105, and the dust in the dust collecting case 105 and the dust in the pocket 162 are discarded. Next, the inner cylinder 131 integrated with the inner cylinder cap 152 can be removed from the cyclone separation cylinder 104 and cleaned using the cleaning brush 168.

  In addition, the mesh filter 133 is colored in a color different from the color of dust, for example, yellow, so that the user can visually confirm that dust has adhered to the mesh filter 133. It is possible to quickly find that it is clogged with dust or the like, and cleaning can be performed early.

  Further, since the mesh filter 133 receives a force inward of the inner cylinder 131, deformation of the inner cylinder 131 can be prevented by providing an inner cylinder rib 136 on the inner diameter side of the mesh filter 133. Here, when the antistatic treatment is applied to the mesh filter 133, dust adhering to the mesh filter 133 is easily separated and cleaning is easy. Further, if the water repellent treatment is performed on the mesh filter 133, the cleanability when the inner cylinder 131 is washed with water is improved.

  Here, the cylinder part 134 of the inner cylinder 131 extends to the lowermost end of the partition wall 132 wound spirally around the cylinder part 134. For this reason, when the mesh filter 133 is formed integrally with the cylindrical portion 134 by insert molding, the shape of the member of the mesh filter 133 may be substantially rectangular. By doing in this way, since there is a member which constitutes the net filter 133 uniformly in the circumferential direction of the cylinder part 134, the cylinder part 134 is hardly deformed at the time of molding. Further, since the shape of the member of the mesh filter 133 can be made substantially rectangular, the material removal of this member is improved.

  Further, since the cylindrical portion 134 of the inner cylinder 131 extends to the lowermost end of the partition wall 132 spirally wound around the cylindrical portion 134, it passes through the mesh filter 133 and passes from the cylindrical portion 134 to the exhaust port 120. There is no sudden expansion in the flow path until all of the flowing air flow passes through the mesh filter 133, so the air flow does not decelerate rapidly, creating a reverse pressure gradient against the air flow direction. Hateful. That is, since the air flow is unlikely to flow backward from the inside of the cylindrical portion 131 that is the downstream side of the air flow to the outside of the inner cylinder 131 that is the upstream side of the air flow, separation of the air flow can be suppressed, It is possible to prevent an increase in loss generated by the air flow flowing from the cylindrical portion 134 to the exhaust port 120.

  The cylindrical portion 134 of the inner cylinder 131 is extended to the inner cylinder cap 152 side from the partition wall 132 spirally wound around the cylindrical portion 134, and the net filter 133 is provided on the cylindrical portion of the cylindrical portion 134. For example, the same effect can be selected even when dust-containing air is introduced from the top to the bottom of the cyclone separation cylinder 104 or when the cyclone separation cylinder 104 is placed horizontally and the central axis of the swirling flow is arranged in a substantially horizontal direction. .

  Further, the outer tube 135 of the cyclone separation cylinder 104 is provided with an inlet pipe 115 as an air intake port below the center of the cyclone separation cylinder 104 in the central axial direction. The hose connection port 116 that communicates with the cyclone separating cylinder 104 can also be disposed below the center of the length in the central axis direction. For this reason, since the said hose connection port part 116 can be arrange | positioned at the lower part of the cleaner main body 1, when a user pulls the said cleaner main body 1 through the hose 2 with the hand operation tube 3 The vacuum cleaner main body 1 is not easily toppled and can be stably routed.

  Furthermore, since the hose connection port 116 can be disposed on the lower side of the cleaner body 1, the hose connection port 116 may be provided at the lower part of the upper case 150 and the lower case 101, and these cases may be placed upward. There is no need to extend it. For this reason, since the bending moment applied to the lower case 101 can be reduced in order to receive the force applied to the hose connecting portion 116, it is not necessary to provide a special reinforcing portion in the lower case, which helps to reduce the size and weight.

  Here, the partition wall 132 of the inner cylinder 131 is lifted upward spirally from the winding start position 138 so as to lift the air flow in the cyclone separation cylinder 104 upward. For this reason, the dust flowing into the cyclone separation cylinder 104 from the inlet pipe 115 rises along the spiral partition wall 132 and swirls in the cyclone separation cylinder 104 and is centrifuged, and the communication port 117 and the upper opening are opened. 118 are conveyed to the dust collection case 105. Thus, since the partition wall 132 is lifted upward in a spiral shape, dust is given a strong ascending action in the cyclone separating cylinder 104 and operates with a low air flow of 1 cubic meter or less per minute such as a DC cordless vacuum cleaner. Even with a vacuum cleaner, it is possible to convey dust to the dust collecting case 105. Here, since the axial direction of the cyclone separation cylinder 104 is not a horizontal direction, dust having a large specific gravity that has flowed into the cyclone separation cylinder 104 falls without being able to swivel during the swiveling at the time of the low air volume described above, and the cyclone is separated. The collision with the separation cylinder 104 can be prevented many times, and the cyclone separation cylinder 104 can be prevented from being damaged or broken. The winding start position 138 may be provided from the vicinity of the guide wall 137.

  Here, a spiral partition wall 132 is provided from the root side to the distal end side of the inner cylinder 131 in the cylindrical portion 134 of the inner cylinder 131 provided in the cyclone separation cylinder 104, and the outer cylinder 135 is substantially along the partition wall 132. The inner cylinder 131 is configured to be kept airtight via an elastic seal member 151. Here, as shown in FIG. 8, the airtightness of the outer cylinder 135 and the inner cylinder 131 is easily maintained by urging in the vertical direction in the figure. Note that a portion of the outer cylinder 135 becomes a concave portion in the portion that contacts the vicinity of the upper portion of the guide wall 137, but the strength of the outer cylinder 135 can be ensured by making the vicinity of the corner of the concave portion into an R shape.

Since the outer cylinder 135 and the inner cylinder 131 are attached in this way, unnecessary irregularities need not be provided in the cyclone separation cylinder 104. For this reason, when dust flows into the cyclone separation cylinder 104, the dust is smoothly transferred to the dust collecting case 105, so that it is difficult to collect in the cyclone separation cylinder 104, and the number of times of cleaning maintenance of the cyclone separation cylinder 104 is reduced. be able to. Moreover, since the disturbance of the airflow in the cyclone separation cylinder 104 can be suppressed, the suction work rate can be improved.
Note that the seal member 151 and the seal member 153 can be integrally formed, and when formed integrally, the molding can be performed at one time, and the assembling work can be omitted.

  If the height of the guide wall 137 is higher than the height of the inlet pipe 115, the air flow flowing in from the inlet pipe 115 and the air flow swirling in the cyclone separation cylinder 104 are less likely to interfere and mix, In addition to preventing the turbulence associated with these, it is also possible to prevent sudden expansion during inflow and reduce loss.

  Here, although not shown in the figure, if the gradient of the spiral partition wall 132 is not constant and the gradient to the vicinity of the exhaust port 120 of the inner cylinder 131 is increased, the height direction dimension of the exhaust port 120 is increased. Since the area of the exhaust port 120 can be increased and the flow velocity can be reduced, the ventilation loss can be reduced.

  Further, if the cross-sectional shape of the inlet tube 115 is a substantially rectangular shape with peripheral corners, the wall of the outer tube 135 and the partition wall of the inner tube 131 when the air flow flows from the inlet tube 115 into the cyclone separation tube 104. Since it can flow in along 132, the flow loss due to rapid expansion when flowing into the cyclone separation cylinder 104 can be reduced as compared with the case of the inlet pipe 115 having a circular cross section. Thus, when the cross-sectional shape of the inlet pipe 115 is a substantially rectangular shape, the cross-sectional shape of the connecting portion 2a of the hose 2 is gradually changed from a circular shape on the hose side to a substantially rectangular shape that is the cross-sectional shape of the inlet pipe 115. By changing the shape, the flow can flow into the cyclone separation cylinder 104 while suppressing loss due to flow separation.

  The dust collection case 105 is provided with an upper opening 118 that communicates with the communication port 117 of the cyclone separation cylinder 104. A first filter 106 attached to the filter frame 140 is provided on the exhaust side of the dust collection case 105. Both sides of the filter frame 140 are open, and are provided so as to rotate about an opening / closing shaft 143 provided at the bottom. When the filter frame 140 is closed, the dust collection case 105 and the filter frame 140 are in an airtight state. Keeping in contact.

  The dust collection performance of the first filter 106 is determined by the ability of the filter material, but it is preferable to have the ability to separate up to μm order dust. Here, it is desirable to use a sponge made of foamable and washable plastic, a non-woven fabric that can be washed with water, or a filter paper material that can be washed with water for the first filter 106. In addition, when a foamable plastic material is used, the passage of fine fiber dust contained in the dust can be prevented, so that the fiber dust that is difficult to remove by the second filter 161 can be prevented from flowing into the second filter 161 side. So even better.

  Further, the filter frame 140 is integrally provided with a mesh filter 106a by insert molding or the like. The dust collection performance of the mesh filter 106a is determined by the fineness of the mesh, but if the dust collection performance is too high, clogging is likely to occur quickly, so it is determined in consideration of the overall dust collection capability. desirable. When the antistatic treatment is applied to the mesh filter 106a, the dust attached to the mesh filter 106a is easily separated, and may be cleaned using the cleaning brush 168, which is easy to clean. Furthermore, if the mesh filter 106a is subjected to water repellent treatment, the drying time when washed with water can be shortened.

  A filter frame 163 is provided on the downstream side of the first filter 106. When the filter frame 140 and the filter frame 163 are closed, the two are in contact with each other while maintaining an airtight state. The filter frame 163 has openings on both sides, and is provided so as to rotate coaxially with the filter frame 140 about the opening / closing shaft 143 provided at the lower part of the filter frame 140. A lever 142 is provided on the upper portion of the filter frame 163, and the filter frame 140 and the filter frame 163 are locked to the dust collecting case 105 side so as to keep an airtight state. In the present embodiment, the opening / closing shaft 143 is at the bottom, and the filter frame 140 and the filter frame 163 are opened from the upper part in the figure, so that the dust collection case 105 is directed sideways and the dust is discarded. good. Although a detailed structure is omitted, if the opening / closing shaft is provided in the upper part and the lever is provided in the lower part, or both the lever and the opening / closing axis are provided in the upper part and the clamp is provided in the lower part, the inside of the dust collecting case 105 and the pocket When the dust in 162 is discarded, it is even better because the dust is less likely to be applied to the filter frame 140.

  A second filter 161 is formed integrally with the filter frame 163. The second filter 161 is formed by fold-folding the filter material, and the fold line direction of the mountain fold is substantially perpendicular to the floor surface. The second filter 161 is made of washable nonwoven fabric, washable filter paper material, or the like. Furthermore, if water-repellent treatment is performed, the drying time at the time of washing with water can be shortened. Further, the second filter 161 is integrally formed with the second filter 161 at the top of the mountain on the downstream side. In addition, the reinforcement part 166 is not provided over all mountain parts, but is provided only in the vicinity of the part which the dust removal spring 170 of the dust removal apparatus 164 contacts. Thereby, since the vibration to the second filter 161 given by the dust removal spring 170 is easily transmitted to the entire second filter 161, the ability to remove dust from the second filter 161 can be increased. Further, if the reinforcing portion 166 is extended to one end of the peak portion, for example, in the present embodiment, the dust removal capability may be slightly reduced. Moreover, since the plastic reinforcement part 166 is provided in the peak part of the 2nd downstream of the filter 161, the fall of the effective area of a filter can be suppressed and increase of ventilation resistance can be prevented.

  Further, when the second filter 161 is rubbed with the cleaning brush 168 when the second filter 161 is cleaned, there is a reinforcing portion 166, so that the filter material of the second filter 161 is the horizontal direction in the figure. Therefore, the ability to remove dust from the second filter 161 can be enhanced. Note that when the second filter 161 is subjected to an antistatic treatment, dust is easily separated when the second filter 161 is dust-removed, and the ability to remove the second filter 161 can be enhanced.

  The first filter 106 is sandwiched between the filter frame 140 and the second filter 161 and is fixed by a rib provided on the filter frame 140. When dust accumulates in the first filter 106, the resistance increases, and the first filter 106 receives a force toward the downstream side, but is pressed by the peak portion of the second filter 161, and thus in the flow direction. The first filter 106 can be prevented from being deformed without being compressed locally. For this reason, it is possible to suppress an increase in flow resistance due to clogging of the first filter 106, and it is easy to maintain the suction force.

  In addition, the air that flows out from the exhaust port 120 of the cyclone separation cylinder 104 and the air that flows out of the exhaust port 144 of the dust collecting case 105 merge and pass through the second filter 161 through the inner cylinder 131. Therefore, it is not necessary to divide the second filter 161 into each flow path. That is, the second filter 161 can perform dust removal with one dust removing unit.

  In addition, the air that flows out from the inner cylinder 131 and the exhaust port 120 and the air that flows out from the dust collection case exhaust port 144 merge and pass through the second filter 161. As a result, the flow path area can be increased and the clogging of the filter can be delayed by using one second filter 161 rather than providing a filter partitioned for each flow path. Furthermore, the ratio of the amount of air flowing out of the exhaust port 120 and the amount of air flowing out of the dust collecting case exhaust port 144 changes depending on the amount of dust sucked into the dust collecting case 105. The second filter 161 is formed by folding the filter material, and the fold line direction of the mountain fold is substantially perpendicular to the floor surface. Therefore, the air flowing out of the cyclone outlet 144 is The second filter 161 can be passed while passing between the mountains. Furthermore, since these airflows merge and mix and pass through one second filter 161, the flow rate of air passing through the filter does not become excessive, increasing the airflow resistance, and the dust collection rate of the filter. Can be prevented.

  In addition, the filter frame 163 is provided with arc-shaped guides 165 having both ends installed with two screws. Here, the dust removing device 164 is rotatably screwed to a fulcrum 167 at the upper portion of the filter frame 163, and the lower end portion is sandwiched between the guides 165. The user can remove the second filter 161 by moving the dust removing device 164 in the left-right direction in FIG.

  A dust removing spring 170 is attached to the dust removing device 164, and the lower portion of the dust removing spring 170 in the drawing sequentially collides with the reinforcing portion 166 of the second filter 161 by moving the dust removing device 164 left and right. Here, while the dust removal spring 170 is deformed in the rotational direction around the axis of the dust removal spring 170, the dust removal filter 161 collides with the reinforcement portion 166, rides on the reinforcement portion 166, and passes over the reinforcement portion 166. , Repeatedly collide with the reinforcement provided on the adjacent mountain. As a result, the dust removal spring 170 applies vibration to the second filter 161 and peels off dust attached to the second filter 161 by this vibration. Here, the shape of the filter frame 163 at the portion joined to the lower surface portion of the second filter 161 is a sawtooth shape that roughly matches the folds and valleys of the second filter 161. Further, at the lower part, the downstream side and the lower side of the filter frame 163 are closed and the upstream side is opened. That is, the lower end portion of the second filter 161 is installed to be above the lower end portion of the filter frame 140. Accordingly, the dust that has peeled off from the filter surface of the second filter 161 passes through the peaks of the second filter 161, below the dust collection case 105, and becomes dust on the pocket 162 side below the communication passage 145. It is easy to migrate, and dust accumulates in the pocket 162.

  Prior to throwing away the dust in the dust collecting case 105, the dust removing device 164 is moved to separate the dust from the second filter 161, put the dust into the pocket 162, and then throw away the dust in the dust collecting case 105. Just do it. The dust removal operation may be performed after throwing away the dust. In this case, the dust that has fallen on the inlet side of the pocket 162 is formed at the inlet portion of the pocket 162 by the airflow flowing through the cyclone outlet 146 during the next vacuum cleaner operation. The secondary flow vortex is conveyed to the back of the pocket 162 and can prevent dust from rising. Since the density of the dust is larger than the air density, the dust cannot follow the sudden turning of the vortex due to the secondary flow of the air flow due to inertia and is blown to the back of the pocket 162, so that the dust collects from the back of the pocket 162. become.

  Further, even during actual cleaning, when the cleaner body 1 is moved before and after cleaning, an impact is applied to the cleaner body 1 and dust is peeled off from the second filter 161. Even when it falls into the position, as described above, it is conveyed to the pocket 162 during the next vacuum cleaner operation. Therefore, even if the dust removing device 164 is not attached, by providing the pocket 162, dust peeled off from the filter surface accumulates in the pocket 162, so that the dust can be prevented from being scattered again. Although this pocket 162 is below the communication passage 145, it can accommodate dust without increasing the height dimension by providing a depth in a direction away from the second filter 161 side. The amount can be increased.

  The cleaning of the first filter 106 can be performed by opening the filter frame 140 and the filter frame 163, removing the first filter 106 from the filter frame 140, and washing. Further, the dust adhering to the mesh filter 106a is taken out from the cleaning brush 168 held in the fixing rib on the lower surface of the dust collecting case 105, and the surface of the mesh filter 106a is rubbed with the cleaning brush 168. It can be cleaned by washing with water. The cleaning of the second filter 161 can be performed by rubbing the surface of the second filter 161 using the cleaning brush 168 including the dust collecting case 105 with the filter frame 140 and the filter frame 163 opened. What is necessary is just to wash by water. Since the cleaning brush 168 is attached to the lower surface of the dust collecting case 105, the user can easily use the cleaning brush 168 by removing the cleaning brush 168 from the lower surface of the dust collecting case 105 when cleaning the mesh filter 106a and the like. If the height of the brush portion of the cleaning brush 168 is set higher than the height of the fold folds of the dust filter 161, the brush portion reaches the fold folds of the dust filter 161, so Easy to scrape dust.

  Note that the filter frame 140 and the filter frame 163 can rotate about the same opening / closing shaft 143, and each cannot be removed individually, so that the filter frame 140 and the filter frame 163 are forgotten to be operated. I can prevent it.

  The dust collection case 105 is divided into a dust storage part 105a and a communication passage 145 by a wall 105b, and a pocket 162 is provided below the communication passage 145. The filter frame 140 is provided with a mesh filter 106a in a part facing the dust container 105a, and a part joined to the wall 105b is in contact with the elastic seal member while maintaining airtightness, and the cyclone flow from the dust container 105a. Garbage is prevented from flowing out to the outlet 146. Further, the exhaust port 120 of the cyclone separating cylinder 104 and the communication passage 145 are also in contact with each other through an elastic seal member 153 while maintaining airtightness.

  On the other hand, the wall 105 c between the communication passage 145 and the pocket 162 is not airtight with the filter frame 140. This is to make it easier for the dust separated from the second filter 161 during dust removal to be stored in the pocket.

  On the outer peripheral side of the filter frame 163, there is an elastic seal portion 172 that is integrated with the filter frame 163, and is in contact with the filter case 113 that houses the auxiliary filter 112 provided in front of the electric blower 107 while maintaining airtightness. Yes. When the dust collection case 105 is stored in the cleaner body 1, the elastic seal portion 172 is provided not on the vertical direction but on the upper side inclined to the electric blower 107 side. For this reason, pushing the dust collection case 105 into the cleaner body 1 makes it easy to remove the airtightness and facilitates the attachment / detachment of the dust collection case 105 from the cleaner body 1. Further, since the elastic seal portion 172 of the filter frame 163 is airtight with the filter frame 140, there is an effect that the number of seal members can be reduced.

  When the dust collecting case 105 is stored in the cleaner body 1, the elastic seal portion 140 b is provided not on the vertical direction but on the upper side inclined to the electric blower 107 side. For this reason, pushing the dust collection case 105 into the cleaner body 1 makes it easy to remove the airtightness and facilitates the attachment / detachment of the dust collection case 105 from the cleaner body 1.

  As shown in FIG. 14, the auxiliary filter 112 is formed by folding the filter material, and the fold line direction of the mountain fold is set substantially parallel to the floor surface. Since the auxiliary filter 112 is formed in this way, the dust trapped by the auxiliary filter 112 is difficult to move downward, so that the dust is less likely to fall below the auxiliary filter 112, and the dust is collected in the cleaner body 1. It is also possible to obtain an effect that there is little drop.

  Since the auxiliary filter 112 is the last-stage filter associated with the dust collecting portion, it is desirable that dust up to sub-μm can be captured with high probability. As a method for realizing this, there is a method using a filter material that has been charged. Alternatively, the same dust collection performance can be realized by using a fine non-woven fabric formed of fine fibers having a sub-μm wire diameter as the filter material. In this case, a non-woven fabric with a coarse mesh, a large wire diameter, and a highly rigid nonwoven fabric is welded as a reinforcing material before and after the fine nonwoven fabric, thereby providing a filter material having high rigidity and capable of trapping dust up to sub-μm. be able to. Furthermore, if they are all made of materials that can be washed, they can be washed with water. For example, materials such as polyester-based materials and PTFE (polytetrafluoroethylene) are used. In this case, if antistatic treatment is performed, dust attached to the auxiliary filter 112 is easily peeled off, and cleaning can be facilitated.

  In addition, since it will become easy to color by coloring or printing if a reinforcement material is thickened, the reinforcement material makes the front side thick. Here, if the front side is thickened, the amount of dust stored in this portion can be increased, so that the effect of delaying clogging of the auxiliary filter 112 can also be obtained. The color of the auxiliary filter 112 should be different from that of dust, and is colored blue in the present embodiment. For this reason, the user can visually check the dirt of the auxiliary filter 112 and can recover the suction force by removing the dust of the auxiliary filter 112 by washing with water.

  The auxiliary filter 112 is formed integrally with the frame body 181 so that the filter material is fold-folded, and the fold line direction of the mountain fold is substantially parallel to the floor surface when the floor is moved. Further, the plurality of reinforcing ribs 182 are used to prevent the filter material from peeling from the frame body 181 side. The reinforcing rib 182 has a hand-held projection 183 protruding below the auxiliary filter 112 and toward the front side in the figure. Further, when the cyclone separating cylinder 104 and the dust collecting case 105 are integrally configured and attached to the cleaner body 1, the upper front-rear direction is longer than the lower front-rear direction length in consideration of removal. A draft angle is provided. Accordingly, since the filter case 113 is also inclined with respect to the floor surface, the lower side of the filter case 113 is longer in the front-rear direction than the upper side. Therefore, if the hand-held projection 183 is provided on the lower side, the filter case 113 does not need to be enlarged, and the vacuum cleaner body 1 can be downsized.

  With this configuration, when the auxiliary filter 112 is cleaned, the hand-held projection 183 can be grasped by hand and pulled out to be taken out. At this time, since the upstream surface of the auxiliary filter 112 can be taken out, it is difficult for dust to fall on the cleaner body 1.

  The dust collection performance of the filter material described above is the auxiliary filter 112, the second filter 161, the first filter 106, and the mesh filter 106a in the order in which finer dust can be collected, and these are downstream of the flow. They are arranged in order from the side. With this configuration, the total amount (volume) of dust reaching each filter gradually decreases from the upstream side, so the more easily the filter becomes clogged, the smaller the amount of dust handled. Also, the effect of slowing down the clogging as a whole can be obtained.

  Most of the dust that has entered the cleaner body 1 is stored in the dust collection case 105. Therefore, the dust can be discarded by removing the dust collection case 105 from the cleaner body 1 and discarding the dust. It is desirable to dispose of the trash before dust overflows from the dust collection case 105. For this reason, as shown in FIG. 7, the dust collection case 105 is provided with a waste disposal line 155 at a position near the upper opening 118 so that the user can perform waste disposal with reference to this. The waste disposal line 155 is not oriented horizontally or vertically, but when the dust is collected in the dust collecting case 105, the portion close to the upper opening 118 is filled with the last waste. Or, the shape is set to be inclined.

  In this embodiment, since the air flow in the cleaner body 1 is divided into two paths as shown in FIG. 6, a pressure difference is applied to the dust in the dust collection case 105 in the air flow direction. This pressure difference causes the dust to be constantly compressed. Since this pressure difference increases as the amount of accumulated dust increases, it also has a feature that the amount of compression increases as the amount of dust increases. Accordingly, the dust in the dust collection case 105 is accumulated in a layered manner before the net filter 106a, and fine dust is also accumulated together. For this reason, since dust is interspersed between fiber dusts, it is also possible to obtain an effect that it is difficult for dust to rise when throwing away garbage.

  Furthermore, since the air volume of the air flow passing through the exhaust port 120 of the cyclone separation cylinder 104 is smaller than when the air does not pass through the dust collection case exhaust port 144, the ventilation resistance of the cyclone separation cylinder 104 can be reduced. Therefore, it has the feature that the suction power of the vacuum cleaner can be further increased.

  Further, in the cyclone separation cylinder 104, dust-containing air flows into the cyclone separation cylinder 104 from the inlet pipe 115 of the cyclone separation cylinder 104 and swirls in the cyclone separation cylinder 104, whereby the dust is centrifuged and the dust is separated. It is lifted upward in the cyclone separating cylinder 104 and conveyed to the dust collecting case 105 side. At this time, since there is a flow of air exhausted from the first filter 106 from the cyclone separation cylinder 104 through the dust collection case 105, the dust centrifuged in the cyclone separation cylinder 104 is collected in the dust collection case 105. It is easy to flow in to the side, and dust is instantaneously separated to the dust collecting case 105 side, so that dust collection efficiency can be increased.

  Further, since the dust that has been centrifuged in the cyclone separation cylinder 104 and conveyed to the dust collection case 105 side is unlikely to flow back to the cyclone separation cylinder 104, the dust conveyed to the dust collection case 105 side is re-scattered. The dust collection efficiency can be increased without doing so. Here, ribs 156 and ribs 157 are arranged in the dust collection case 105 to suppress vortices generated in the dust collection case 105. For this reason, it is possible to suppress the dust flowing into the dust collection case 105 from flowing into the cyclone separation cylinder 104 again. Since dust can be prevented from re-scattering into the cyclone separation cylinder 104, dust collection efficiency can be improved.

  Further, when dust adheres to the mesh filter 133 of the inner cylinder 131, the air volume of the air flow exhausted from the exhaust port 120 for exhausting the air removed from the cyclone separation cylinder 104 is reduced, and thus the first filter 106 The air volume of the air flow at the dust collection case exhaust port 144, which is the exhaust port from the dust collection case 105 that has passed through, increases. For this reason, the dust adhering to the mesh filter 133 of the inner cylinder 131 is transported to the dust collecting case 105.

  Further, the dust collected from the cyclone separation cylinder 104 is exhausted from the cross-sectional area of the dust collection case exhaust port 144 that is the exhaust port from the dust collection case 105 that has passed through the first filter 106 from the dust collection case 105. The cross-sectional area of the exhaust port 120 is larger. For this reason, the cross-sectional area of the first filter 106 can be increased, and the flow velocity of the air passing through the first filter 106 can be decreased. For this reason, the blow-through of dust from the first filter 106 can be reduced. Furthermore, since the pressure loss when air passes through the first filter 106 can be reduced, the suction power of the vacuum cleaner can be further increased.

  Further, if the amount of dust accumulated in the dust collection case 105 increases, the airflow resistance when passing through the dust collection case 105 increases, so the amount of air flowing through the dust collection case 105 decreases. Therefore, when a large amount of dust that tends to generate odor is accumulated in the dust collecting case 105, the amount of air passing through the dust is reduced, and there is an effect that it is difficult to remove the odor outside the vacuum cleaner.

  Further, even when the inside of the communication passage 145, the pocket 162, and the cyclone outlet 146 becomes dirty, it can be easily cleaned with the dust collecting case 105 taken out.

  Further, since the inlet pipe 115 and the inner cylinder 131 of the cyclone separation cylinder 104 are provided below, the communication port 117 of the cyclone separation cylinder 104 and the upper opening 118 of the dust collection case 105 can be provided in the upper part, and the dust collection case 105 Since the dust that has entered falls down due to gravity, spillage into the cyclone separation cylinder 104 can be prevented.

  Further, since the upper opening 118 of the dust collection case 105 is disposed in front of the dust collection case 105, the upper opening 118 of the dust collection case 105 is disposed when the vacuum cleaner body 1 is stood up and stored. It will be arranged above the dust case 105. As a result, dust that has entered the dust collection case 105 can be prevented from spilling into the cyclone separation cylinder 104.

  Further, since the dust collecting case 105 is arranged on the side surface of the cyclone separating cylinder 104, the length direction of the cyclone separating cylinder 104 can be increased without increasing the height of the vacuum cleaner main body 1. It has the feature that the separation ability of can be increased.

  When the electric blower 107 is stopped near the inlet pipe 115, the inlet pipe 115 is closed, and when the electric blower 107 is operated, the inlet pipe 115 and the cyclone separation cylinder 104 are communicated with each other. A valve that rotates toward the guide wall 137 of the inner cylinder 131 disposed in the cyclone separation cylinder 104 may be provided. In this case, it is possible to prevent dust from spilling when the operation of the electric blower 107 is stopped and the cyclone separation cylinder 104 is taken out.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 15 is a cross-sectional view of the cyclone separating cylinder 104 and the dust collecting case 105. In the present embodiment, the same reference numerals as those in the first embodiment have the same structure, and the description thereof is omitted. Here, a spiral partition wall 132 is provided in the cylindrical portion 134 of the inner cylinder 131 provided in the cyclone separating cylinder 104 from the root side to the tip side of the inner cylinder 131, and the outer wall 139 of the inner cylinder 131 and the cyclone are provided. A gap 147 is provided between the outer cylinders 135 of the separation cylinder 131 in a portion where the partition wall 132 is spirally changed. The gap 147 has an interval of about 5 mm in the radial direction of the outer cylinder 135. For this reason, during the operation of the cleaner, there is a swirling flow in the cyclone separation cylinder 104, a swirling flow is also generated in the gap 147, and dust is collected in the gap 147 between the outer wall 139 and the outer cylinder 135. Even if it enters, dust does not collect easily in the gap 147 and is transported to the dust collecting case 105.
If this gap 147 is provided, the elastic seal member 151 for sealing between the outer wall 135 and the outer wall 139 of the inner cylinder 131 does not need to be along the spiral partition wall 132, and constitutes a substantially cylindrical sealing surface. It is easy to take airtightness. For this reason, the fall of the vacuum degree of a vacuum cleaner can be prevented and it leads to the improvement of a suction work rate. Further, since the elastic seal member 151 only needs to form a substantially cylindrical surface, the length of the seal surface can be shortened, and the inner cylinder 131 can be easily detached from the cyclone separating cylinder 104. Easy to maintain. Note that the seal member 151 and the seal member 153 can be integrally formed, and when formed integrally, the molding can be performed at one time, and the assembling work can be omitted.
Further, if the gap 147 is enlarged as it goes upward of the cyclone separation cylinder 104 on the downstream side of the air flow, dust can be prevented from being clogged in the gap 147. In addition, even when the gap 147 is clogged with dust, the inner cylinder 131 can be easily removed from the cyclone separating cylinder 104, so that the clogged dust can be easily removed.

It is an external appearance perspective view of the vacuum cleaner which shows one Embodiment of this invention. It is a perspective view of the vacuum cleaner main body in the electric vacuum cleaner shown in FIG. It is a perspective view which shows the state which opened the upper cover of the vacuum cleaner main body in the electric vacuum cleaner shown in FIG. It is a perspective view which shows the state which opened the upper cover in the vacuum cleaner main body in the vacuum cleaner shown in FIG. 1, and removed the cyclone separation cylinder and the dust collection case. It is a top view which shows the state which removed the upper case and upper cover in the cleaner body. It is a schematic diagram which shows the flow of air. 2 is an external perspective view of a cyclone separating cylinder 104 and a dust collecting case 105. FIG. It is AA sectional drawing shown in FIG. 5 of the cyclone separation cylinder 104 and the dust collection case 105. FIG. It is BB sectional drawing shown in FIG. 5 of the cyclone separation cylinder 104 and the dust collection case 105. FIG. It is CC sectional drawing shown in FIG. 5 of the cyclone separation cylinder 104 and the dust collection case 105. FIG. It is DD sectional drawing of FIG. It is a side view when the cyclone separation cylinder 104 and the dust collection case 105 are seen from the exhaust side. It is a top view when the cyclone separation cylinder 104 and the dust collection case 105 are seen from the bottom. It is the side view which looked at the auxiliary filter 112 from the upstream. 2 is a cross-sectional view of a cyclone separating cylinder 104 and a dust collecting case 105. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vacuum cleaner main body, 101 ... Lower case, 103 ... Dust collection part, 104 ... Cyclone separation cylinder, 105 ... Dust collection case, 106 ... Filter, 107 ... Electric blower, 112 ... Auxiliary filter, 115 ... Inlet pipe, 117 ... Communication port, 120 ... exhaust port, 131 ... inner cylinder, 140 ... filter frame, 145 ... communication passage, 146 ... cyclone outlet, 150 ... upper case, 161 ... second filter, 162 ... pocket, 163 ... filter frame 165: Guide for dust removal.

Claims (3)

In a vacuum cleaner provided with an inlet part for inflowing dust-containing air and a communication port leading to a dust collecting case at the upper part of the cyclone separation cylinder at the bottom of the cyclone separation cylinder for removing dust-containing air by centrifugation,
A spiral partition is provided from the root side to the tip side of the inner cylinder in the cylinder part of the inner cylinder provided inside the cyclone separating cylinder, and the height of the partition and the height of the cylinder part of the inner cylinder are approximately the same. A vacuum cleaner characterized by equality. A cyclone separation cylinder that removes dust-containing air by centrifugal separation is attached with an inlet portion for introducing dust-containing air and an inner cylinder configured as a lid on the outer cylinder of the cyclone separation cylinder. In vacuum cleaners that exhaust air,
A spiral partition wall is provided from the root side to the tip side of the inner cylinder in the cylindrical portion of the inner cylinder provided inside the cyclone separation cylinder, and an airtight surface of the outer cylinder and the inner cylinder is provided along the partition wall. An electric vacuum cleaner. A cyclone separation cylinder that removes dust-containing air by centrifugation, an inlet portion that flows dust-in air, and an inner cylinder configured in a lid shape on the cyclone separation cylinder are attached to the outer cylinder of the cyclone separation cylinder, and the inner cylinder In the vacuum cleaner that exhausts the air of the cyclone separating cylinder through
A spiral partition from the base side to the tip side of the inner cylinder and a guide wall from the inlet side to the cylinder part are provided in the cylinder part of the inner cylinder provided inside the cyclone separation cylinder, and the guide wall and cylinder The vacuum cleaner characterized by providing the opening part which exhausts the air of a cyclone separation cylinder in the part.

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