JP2011015879A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of effectively discarding dust stored within a dust collecting chamber.SOLUTION: The vacuum cleaner 1 includes: a suction nozzle 101 with a suction port; an electric blower 110 for generating intake air; an intake air pathway for guiding intake air from the suction nozzle 101 to the electric blower 110; the dust collection chamber 120 disposed in the intake air pathway for separating dust by swirling intake air; and an ion generating chamber 130 for generating ions to be fed into the dust collection chamber 120. A plurality of ribs 124 are formed on the inner peripheral wall surface of a dust cup 121 in the dust collection chamber 120 so that the dust within the dust cup 121 can be in contact with the ribs.

Description

  The present invention relates to a vacuum cleaner.

  Conventionally, a vacuum cleaner generates air intake by an electric blower and sucks dust on the surface of an object to be cleaned into the vacuum cleaner together with surrounding air. The dust sucked into the electric vacuum cleaner is removed from the intake air by a filter in the dust collection chamber, or is separated from the intake air by turning the intake air.

  In a vacuum cleaner, members constituting an intake passage through which intake air passes are charged by friction with intake air. Further, the dust is charged by the friction between the intake air and the dust. In particular, in a vacuum cleaner that swirls the intake air to separate the intake air and dust, the intake air swirls along the inner peripheral wall surface of the dust collection chamber, so that the dust collection chamber is easily charged. In addition, since the dust charged by friction with the intake air also rotates in the dust collection chamber together with the intake air, the dust collection chamber is also charged when the charged dust contacts.

  When the dust collection chamber or dust inside the dust collection chamber is charged, the following problems may occur. That is, when the vacuum cleaner user discards the dust accumulated in the dust collection chamber, the dust adheres to the dust collection chamber and is not easily disposed of, or the dust jumps out of the dust collection chamber. May scatter around. Further, when the user of the vacuum cleaner discards the dust accumulated in the dust collection chamber, there is a risk of electric shock due to the user's hand touching the charged dust collection chamber.

  In order to prevent the dust and the dust collection chamber from being charged, for example, supplying ions to the intake air can be considered. The following vacuum cleaners have been proposed as vacuum cleaners that supply ions to the intake air.

  Japanese Patent Laying-Open No. 2004-194977 (Patent Document 1) describes a vacuum cleaner including an adapter that is attached to a suction port of a vacuum cleaner main body instead of a dust suction hose when cleaning is not performed. This adapter incorporates a negative ion generator. When the electric blower of the cleaner is driven in a state where the adapter is attached to the suction port of the cleaner body, negative ions are supplied into the cleaner body together with the airflow passing through the adapter. In addition, the air path of the adapter is restricted by the air path restriction, and the speed of the airflow passing through the adapter can be made higher than the speed of the airflow during normal cleaning. With this air flow, the dust film attached to the filter is peeled off. Moreover, since negative ions are supplied together with this air flow, the charging of the filter is neutralized to facilitate the removal of dust.

  Japanese Patent Laying-Open No. 2006-158568 (Patent Document 2) describes an electric vacuum cleaner provided with a discharging means on the outside of the dust collecting case in order to discharge the dust collecting case. The static elimination means may have a part in contact with the dust collection case and release static electricity charged in the dust collection case, or generate static electricity by the static elimination means and neutralize the static electricity charged in the dust collection case. Good. Alternatively, negative ions may be generated in the air and the dust collecting case may be neutralized using the negative ions.

  Japanese Patent Application Laid-Open No. 2004-154214 (Patent Document 3) is provided with an ion generating means that discharges electric charges to a dust collecting portion constituted by a mesh filter, and an electric cleaning that reduces clogging of the dust collecting portion. The machine is listed.

Japanese Patent Laid-Open No. 2004-194777 JP 2006-158568 A JP 2004-154214 A

  In the electric vacuum cleaner described in JP 2004-194777 A (Patent Document 1), JP 2006-158568 A (Patent Document 2), or JP 2004-154214 A (Patent Document 3), Is introduced into a dust collection chamber such as a dust cup or a dust collection case to prevent dust from being charged.

  However, even dust that has been prevented from being charged by ions may adhere to the inner peripheral wall surface by being charged by friction between the dust and the inner peripheral wall surface of the dust collecting chamber. For this reason, when the user of the vacuum cleaner discards the dust accumulated in the dust collection chamber, it is difficult to sufficiently solve the problem that the dust adheres to the dust collection chamber and is not easily discarded.

  Accordingly, an object of the present invention is to provide an electric vacuum cleaner capable of more effectively discarding dust accumulated in a dust collection chamber.

  The vacuum cleaner according to the present invention includes a suction port body having a suction port, an electric blower that generates intake air, an intake passage that guides intake air from the suction port body to the electric blower, and is disposed in the intake passage. A dust collection chamber that turns to separate dust is provided, and an ion generation section that generates ions to be supplied to the dust collection chamber. A plurality of obstacles are formed on the inner peripheral wall surface of the dust collection chamber so that the dust in the dust collection chamber can contact.

  In the electric vacuum cleaner of the present invention, the dust is separated from the intake air by swirling the intake air and collected in the dust collection chamber. At this time, the ions generated by the ion generator are supplied into the dust collection chamber, so that the dust is prevented from being charged. However, the dust may be charged by friction between the dust and the inner peripheral wall surface of the dust collecting chamber.

  Even in such a case, in the vacuum cleaner of the present invention, the dust comes into contact with a plurality of obstacles formed on the inner peripheral wall surface of the dust collecting chamber and rises from the inner peripheral wall surface, so that the dust and the dust collecting chamber are It is possible to reduce the amount of triboelectric charge between the inner peripheral wall surface of each of the two. This effectively prevents the dust from adhering to the inner peripheral wall surface of the dust collection chamber by the synergistic effect of the dust antistatic effect due to the ions and the dust frictional antistatic effect due to the plurality of obstacles. be able to. As a result, the dust collected in the dust collection chamber can be more effectively discarded.

  In the vacuum cleaner of the present invention, it is preferable that the obstacle is formed so as to extend in a substantially vertical direction in the dust collection chamber or in a substantially central axis direction of the dust collection chamber.

  In this case, a plurality of obstacles can be easily formed on the inner peripheral wall surface of the dust collection chamber. Moreover, even if dust accumulates in the vicinity of a plurality of obstacles, the dust can be easily discarded from the dust collection chamber.

  Moreover, in the vacuum cleaner of this invention, it is preferable that an obstruction is formed so that it may extend in the direction substantially orthogonal to the inflow direction of the intake air into the dust collection chamber.

  In this case, since the intake air containing the dust contacts the plurality of obstacles so as to be substantially orthogonal, it is possible to more effectively prevent the dust from adhering to the inner peripheral wall surface of the dust collecting chamber.

  In the vacuum cleaner of the present invention, a plurality of obstacles may be formed by being randomly arranged on the inner peripheral wall surface of the dust collection chamber.

  In this case, since the intake air containing dust can contact a plurality of obstacles according to various inflow directions of the intake air into the dust collection chamber, the dust adheres to the inner peripheral wall surface of the dust collection chamber. Can be prevented.

  In the vacuum cleaner of the present invention, it is preferable that the obstacle is formed on an inner peripheral wall surface located relatively below the dust collection chamber.

  In this case, in the dust collection chamber in which the intake air is swirled to separate the dust, a plurality of obstacles positioned relatively below the dust collection chamber prevents the swirling airflow of the intake air generated above the dust collection chamber. There is nothing. For this reason, it can prevent more effectively that dust adheres to the inner peripheral wall surface of a dust collection chamber.

  As described above, according to the present invention, it is possible to provide a vacuum cleaner capable of more effectively discarding dust accumulated in a dust collection chamber.

1 is a perspective view showing an entire vacuum cleaner as one embodiment of the present invention. FIG. It is sectional drawing when the vacuum cleaner of one embodiment is seen from the top. It is a figure when the vacuum cleaner of one embodiment is seen from the direction of the III-III line shown in FIG. It is the figure (A) which expands and shows the ion generation chamber of the vacuum cleaner shown in FIG. 2, and the figure (B) when seeing an ion generation chamber from the direction of the BB line shown to (A). The figure (A) which shows the cross section of the dust cup of 1st Embodiment with which the vacuum cleaner of one Embodiment of this invention is provided, and the longitudinal cross-sectional view seen from the direction of the BB line shown to (A) is there. It is the figure (A) which shows the cross section of only the inner peripheral wall surface of the dust cup of 1st Embodiment, and the longitudinal cross-sectional view seen from the direction of the BB line shown to (A). It is the figure (A) which shows the cross section of only the inner peripheral wall surface of the dust cup of 2nd Embodiment, and the longitudinal cross-sectional view seen from the direction of the BB line shown to (A). It is the figure (A) which shows the cross section of only the inner peripheral wall surface of the dust cup of 3rd Embodiment, and the longitudinal cross-sectional view seen from the direction of the BB line shown to (A).

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the vacuum cleaner 1 is a main body 100 that houses a suction port body 101 as a first suction port body having a suction port, an electric blower (suction motor) that generates intake air, and a dust collection chamber. And an extension pipe 102, a connection pipe 103, a suction hose 104, and a connecting pipe 105 that connect the suction port body 101 and the main body 100. The extension pipe 102, the connection pipe 103, the suction hose 104, and the connection pipe 105 form an intake passage. On the outer peripheral surface of the connecting pipe 105, an ion generation chamber 130 is installed as a second suction port body.

  An extension pipe 102, a connection pipe 103 having a handle, a suction hose 104, and a connection pipe 105 are sequentially connected to the suction port body 101. The suction hose 104 is connected to the main body 100 via a connecting pipe 105. The handle of the connection pipe 103 is provided with an operation unit (not shown) for the user to switch between driving and stopping the electric blower.

  The extension tube 102 may be divided in the middle or made into a double-structured telescopic type so that the user can adjust the length according to the application. The suction hose 104 is configured to bend flexibly.

  The main body 100 is provided with wheels 106 that support the main body 100 so as to be movable on the floor surface. Further, a handle (not shown) for the user to lift the main body 100 is usually disposed on the main body 100, but the handle may not be disposed on the main body 100.

  As shown in FIGS. 2 and 3, the main body 100 of the vacuum cleaner 1 (FIG. 1) mainly includes an electric blower 110, a dust collection chamber 120, a filter 150, an intake passage 107A, An exhaust path 107B is arranged. On the outer peripheral surface of the main body 100, an exhaust port 108 connected to the exhaust path 107 </ b> B is formed between the two wheels 106.

  A connecting pipe 105 is connected to the upstream side of the dust collecting chamber 120, and an electric blower 110 is connected to the downstream side via an intake passage 107A. A filter 150 is disposed on the downstream side of the electric blower 110.

  An ion generation chamber 130 is formed on the outer peripheral surface of the connecting pipe 105 connected to the main body 100. In the ion generation chamber 130, an ion emission port 135 that connects the inside of the ion generation chamber 130 and the inside of the connecting pipe 105 is formed. The ion emission port 135 is covered with a partition wall 140 as a wall portion from the inside of the connecting tube 105. The partition wall 140 prevents intake air passing through the connecting pipe 105 and dust contained in the intake air from flowing into the ion generation chamber 130. 2, the wall extends from the upstream end portion of the ion emission port 135 toward the center portion of the connection pipe 105 and is bent in the middle, and is downstream of the ion emission port 135. It extends to the vicinity of the end. In other words, the partition wall 140 is composed of a vertical wall that extends substantially perpendicular to the flow of intake air and a horizontal wall that extends substantially horizontally to the flow of intake air.

  In view of preventing the inflow of air containing dust into the ion generation chamber 130, the shape of the partition wall 140 is substantially L-shaped with the horizontal wall longer than the vertical wall as shown in FIG. It is preferable to provide a gap near the downstream end of the outlet 135.

  When ions generated in the ion generation chamber 130 are quickly supplied into the connecting tube 105, the vertical wall and the horizontal wall of the partition wall 140 have substantially the same length in order to enlarge the opening of the ion emission port 135. In this case, in order to prevent the inflow of dust into the ion generation chamber 130, it is preferable to provide a mesh mesh filter so as to cover the opening of the ion discharge port 135.

  As shown in FIGS. 4A and 4B, the ion generation chamber 130 includes an ion generation element 131 as an ion generation unit, a separation wall 134 as a positive ion and negative ion separation member, and a check. A valve 137 is arranged. In the ion generation chamber 130, two openings, that is, an ion emission port 135 and an intake port 136 are formed. The ion emission port 135 is always open.

  The air inlet 136 is a hollow cylindrical body that is open at both ends, and communicates the outside with the inside of the ion generation chamber 130. The check valve 137 is a cylindrical body having an inner diameter larger than the outer shape of the intake port 136 and having one end closed and the other end opened. The check valve 137 is combined so as to cover one end of the intake port 136 from the opening side of the other end.

  The check valve 137 is always urged in a direction to open the intake port 136 by urging means (not shown). For example, when the pressure inside the connecting pipe 105 is higher than a predetermined pressure, the urging means closes the intake port 136 when the pressure inside the connecting pipe 105 is higher than a predetermined pressure, and when the pressure inside the connecting pipe 105 is lower than the predetermined pressure. The check valve 137 is a coil spring whose urging force is adjusted so as to open the intake port 136, and is housed between the check valve 137 and the intake port 136. As a result, the check valve 137 opens or closes the intake port 136 based on the pressure inside the connecting pipe 105. An intake port opening / closing means is constituted by the intake port 136, the check valve 137, and the biasing means.

  Instead of the check valve 137, an electromagnetic valve that opens and closes the intake port 136 by an electrically driven valve may be used.

  In this case, the operation part of the ion generating element 131 is provided in the handle of the connection pipe 103, and the intake port 136 is opened and closed by the electromagnetic valve according to the user switching between driving and stopping of the ion generating element 131. .

  Further, the intake port 136 is arranged so that the opening faces downward when the connecting pipe 105 is connected to the main body 100. Accordingly, even when a liquid such as water enters the ion generation chamber 130, it can be quickly discharged to the outside.

  The ion generating element 131 includes a positive ion generating unit 132 and a negative ion generating unit 133. The positive ion generator 132 and the negative ion generator 133 each have a tip, and are configured to generate corona discharge at the tip when a high voltage is applied. For example, by applying a voltage waveform in which an AC impulse voltage is positively biased to the tip of the positive ion generator 132, positive ions are generated in the positive ion generator 132, and an AC impulse is applied to the tip of the negative ion generator 133. By applying a voltage waveform in which the voltage is negatively biased, the negative ion generator 133 generates negative ions.

  The ion emission port 135 is formed at a position where the distance from both the positive ion generation unit 132 and the negative ion generation unit 133 is substantially equal. The separation wall 134 is arranged so as to partition the positive ion generator 132 and the negative ion generator 133 from each other. The separation wall 134 extends from the ion generating element 131 to the ion emission port 135. With the above configuration, the positive ions and negative ions generated from the positive ion generation unit 132 and the negative ion generation unit 133 are prevented from being neutralized in the ion generation chamber 130.

  Operation | movement of the vacuum cleaner 1 comprised as mentioned above is demonstrated. An arrow indicated by a two-dot chain line in FIGS. 2 to 4 indicates a direction in which intake air flows. First, a case where the amount of dust stored in the dust collecting chamber 120 is not so large, that is, a case where the pressure in the intake passage is low will be described.

  When the user operates the operation unit to start the operation of the electric vacuum cleaner 1, the ion generating element 131 and the electric blower 110 are driven. When the ion generating element 131 is driven, ions are generated in each of the positive ion generating unit 132 and the negative ion generating unit 133 of the ion generating element 131.

  When the electric blower 110 is driven, intake air is generated. The intake air is sucked into the suction port body 101 from the suction port. The intake air sucked into the suction port body 101 passes through the extension pipe 102, the connection pipe 103, the suction hose 104, and the connection pipe 105 in this order and is sucked into the main body 100 of the electric vacuum cleaner 1. In the main body 100, the intake air first flows into the dust collecting chamber 120 from the connecting pipe 105.

  When not much dust is collected in the dust collection chamber 120, the pressure in the connecting pipe 105, which is a part of the intake passage, is low. At this time, the check valve 137 disposed in the intake port 136 opens the intake port 136. Therefore, when the electric blower 110 is driven, intake air that is sucked into the ion generation chamber 130 from the intake port 136 of the ion generation chamber 130 is also generated.

  The intake air that has flowed into the ion generation chamber 130 from the intake port 136 passes through the positive ion generation unit 132 and flows out from the ion discharge port 135 to the inside of the connection pipe 105. Further, the intake air that has flowed into the ion generation chamber 130 from the intake port 136 flows into the inside of the connecting pipe 105 from the ion discharge port 135 through the negative ion generation unit 133. When the intake air passes through the positive ion generator 132 and the negative ion generator 133, positive and negative ions are supplied to the intake air. The intake air containing the ions that have flowed into the connection pipe 105 from the ion discharge port 135 flows into the dust collection chamber 120.

  The upstream side of the ion emission port 135 is covered with a partition wall 140. Therefore, the intake air including dust that has flowed into the connecting pipe 105 from the suction inlet body 101 through the extension pipe 102, the connection pipe 103, and the suction hose 104 is separated from the upstream side of the ion emission port 135 by the partition wall 140 that covers the ion emission port 135. And flows toward the downstream side of the connecting pipe 105. Since the partition wall 140 covers the upstream side of the ion emission port 135, it is difficult for air containing dust to enter the ion emission port 135. Therefore, the ion emission port 135 is blocked by dust, or intake air containing dust enters the ion generation chamber 130 from the ion emission port 135, and the positive ion generation unit 132 and the negative ion generation unit 133 are contaminated by dust. Thus, it is possible to prevent the occurrence of discharge.

  When air containing ions flows inside the connecting pipe 105, the connecting pipe 105 and the dust in the connecting pipe 105 are neutralized.

  Next, the intake air containing ions flows into the dust collecting chamber 120 from the connecting pipe 105 and is swirled. At this time, ions in the intake air collide with dust in the intake air. In addition, ions in the intake air collide with the inner wall surface of the dust collection chamber 120.

  The dust in the intake air is often charged due to friction with the intake air or contact between the dust. Further, the inner wall surface of the dust collection chamber 120 is often charged by friction with the intake air or contact with dust. As the ions collide with the charged dust and the inner wall surface of the dust collection chamber 120 in this way, the dust and the dust collection chamber 120 are neutralized.

  The intake air is separated from the dust by swirling in the dust collection chamber 120. The intake air separated from the dust in the dust collection chamber 120 flows toward the electric blower 110. A filter 150 is installed on the downstream side of the electric blower 110. The intake air passes through the filter 150, is purified, passes through the exhaust path 107B, and is discharged from the exhaust port 108 to the outside of the main body 100.

  When the cleaning using the electric vacuum cleaner 1 is completed, the user operates the operation unit to stop the driving of the electric blower 110 and the driving of the ion generating element 131. After the driving of the electric blower 110 and the ion generating element 131 is completely stopped, the user removes the dust collection chamber 120 from the main body 100 and discards the dust accumulated in the dust collection chamber 120.

  The dust and the dust collection chamber 120 are neutralized while the electric blower 110 and the ion generating element 131 are being driven. Therefore, when the dust is discarded from the dust collection chamber 120, it is less likely that the dust is scattered by static electricity or remains attached to the dust collection chamber 120. The dust collection chamber 120 from which the dust has been removed is mounted on the main body 100 of the electric vacuum cleaner 1 again.

  Moreover, the vacuum cleaner 1 of this embodiment is provided with the dust collection chamber 120 which is arrange | positioned at an intake passage and rotates intake air and isolate | separates dust. The dust collection chamber 120 is disposed on the downstream side of the ion emission port 135 in the flow of intake air.

  In the dust collection chamber 120 for rotating the intake air to separate the dust, friction between the intake air and dust, friction between the dust, friction between the intake air and the dust collection chamber 120, friction between the dust and the dust collection chamber 120 The dust and the dust collecting chamber 120 are easily charged. Therefore, by disposing the dust collection chamber 120 on the downstream side of the ion emission port 135 in the flow of the intake air, it is possible to use ions discharged from the ion emission port 135 to the intake passage for discharging the dust collection chamber 120. it can.

  However, even if the dust is prevented from being charged by ions as described above, it may adhere to the inner peripheral wall surface by being charged by friction between the dust and the inner peripheral wall surface of the dust collecting chamber 120. For this reason, when the user of the vacuum cleaner discards the dust accumulated in the dust collection chamber 120, the problem that the dust adheres to the dust collection chamber 120 and becomes difficult to be completely discarded is sufficiently solved. It is hard to be done.

  Therefore, in the vacuum cleaner 1 of the present invention, as shown in FIGS. 5A and 5B and FIGS. 6A and 6B, in the first embodiment, the dust collecting chamber 120 is provided. A plurality of ribs 124 as obstacles are formed on the inner peripheral wall surface of the dust cup 121 to be configured. Each rib 124 has a convex shape protruding from the inner peripheral wall surface of the dust cup 121 toward the center. Each rib 124 is formed so as to extend substantially vertically in the dust cup 121 or substantially in the direction of the central axis of the dust cup 121. The plurality of ribs 124 are formed on the inner peripheral wall surface located relatively below the dust cup 121.

  The intake air containing dust flows into the dust cup 121 from the inlet 122 and turns. The dust separated from the intake air by this turning accumulates below the dust cup 121. At this time, the dust contacts the plurality of ribs 124. In other words, the plurality of ribs 124 are formed so that dust contained in the intake air flowing from the inflow port 122 can come into contact therewith. The intake air after the dust is separated passes through the inner cylinder filter 123 positioned relatively above the dust cup 121 and flows toward the electric blower 110 (FIGS. 2 and 3).

  As described above, in the electric vacuum cleaner 1 of the present invention, dust is separated from the intake air and collected in the dust cup 121 by turning the intake air. At this time, since the ions generated by the ion generation chamber 130 are supplied into the dust cup 121, the dust is prevented from being charged as described above. However, the dust may be charged by friction between the dust and the inner peripheral wall surface of the dust cup 121.

  Even in such a case, in the electric vacuum cleaner 1 of the present invention, dust comes into contact with the plurality of ribs 124 formed on the inner peripheral wall surface of the dust cup 121, so that the dust and the inner peripheral wall surface of the dust cup 121 are By reducing the contact, the triboelectric charge amount between the dust and the inner peripheral wall surface of the dust cup 121 can be reduced. Accordingly, it is possible to more effectively prevent the dust from adhering to the inner peripheral wall surface of the dust cup 121 by the synergistic effect of the dust antistatic action by the ions and the dust friction antistatic action by the plurality of ribs 124. Can do. As a result, the dust accumulated in the dust cup 121 can be discarded more effectively.

  In the first embodiment, the plurality of ribs 124 are formed so as to extend in the vertical direction in the dust cup 121 or in the direction of the central axis of the dust cup 121. It can be easily formed on the inner peripheral wall surface of 121. Even if dust accumulates in the vicinity of the plurality of ribs 124, the dust can be easily discarded from the dust cup 121.

  Further, in the first embodiment, since the plurality of ribs 124 are formed on the inner peripheral wall surface positioned relatively below the dust cup 121, in the dust cup 121 for rotating the intake air to separate the dust, The plurality of ribs 124 positioned relatively below the dust cup 121 does not disturb the swirling airflow of the intake air generated above the dust cup 121. For this reason, it is possible to more effectively prevent dust from adhering to the inner peripheral wall surface of the dust cup 121.

  Next, as shown in FIGS. 7A and 7B, in the second embodiment, ribs as a plurality of obstacles are formed on the inner peripheral wall surface of the dust cup 121 constituting the dust collection chamber 120. 125 is formed. Each rib 125 has a convex shape protruding from the inner peripheral wall surface of the dust cup 121 toward the center. Each rib 125 is formed so as to be inclined and extend upward on the inner peripheral wall surface of the dust cup 121. The intake air containing dust flows into the dust cup 121 from the inlet 122 and turns. This whirling airflow is generated in a direction inclined downward along the inner peripheral wall surface of the dust cup 121. Then, each rib 125 is formed so as to extend in a direction substantially orthogonal to the inflow direction of the intake air into the dust cup 121. The plurality of ribs 125 are formed on the inner peripheral wall surface located relatively below the dust cup 121.

  In this case, in addition to the effects of the first embodiment, the intake air including dust contacts the plurality of ribs 125 so as to be substantially orthogonal to each other, so that the dust adheres to the inner wall surface of the dust cup 121. Can be more effectively prevented.

  In the vacuum cleaner 1 of the present invention, as a third embodiment, as shown in FIGS. 8A and 8B, dot-like projections 126 which are examples of a plurality of obstacles are dust. It may be formed by being randomly arranged on the inner peripheral wall surface of the cup 121.

  In this case, according to various inflow directions of the intake air into the dust cup 121, the intake air containing dust can contact the plurality of protrusions 126, so that the dust adheres to the inner wall surface of the dust cup 121. Can be prevented.

  In the first to third embodiments, an example in which a convex object is formed as a plurality of obstacles has been described. However, a concave object may be used, or a combination of a convex object and a concave object may be used. The effect can be achieved. Further, the cross-sectional shape of the obstacle may be any of a rectangular shape, a triangular shape, a kamaboko shape, and the like.

  Moreover, although the above embodiment demonstrated the example in which the ion generation chamber 130 was formed as an ion generation part on the outer peripheral surface of the connection pipe 105, the location which arrange | positions or forms an ion generation part is the connection pipe 105. However, the present invention is not limited to this, and any portion or the inside of the main body 100 may be used as long as at least ions can be supplied into the dust collection chamber 120.

In the ion generation chambers of the first to third embodiments, approximately the same number of positive ions and negative ions are generated and distributed to the intake air. In general, dust tends to be charged with a positive charge. Therefore, it is possible to eliminate static electricity by generating only negative ions. However, in the present invention, dust is generated by generating both positive ions and negative ions. In addition to static elimination in the collection chamber 120, sterilization and deodorization are performed. A positive ion is a cluster ion in which a plurality of water molecules are attached around a hydrogen ion (H ⁺ ), and is represented as H ⁺ (H ₂ O) _m (where m is an arbitrary natural number). A negative ion is a cluster ion in which a plurality of water molecules are attached around an oxygen ion (O ₂ ⁻ ), and is represented as O ₂ ⁻ (H ₂ O) _n (where n is an arbitrary natural number). When positive ions and negative ions are released into the dust collection chamber 120, both ions surround mold fungi and viruses floating in the air, and the active species of hydroxyl radicals (.OH) generated at that time Due to the action, floating molds and the like are removed. Furthermore, since the active species has an action of oxidizing and decomposing odor molecules in the air, deodorization in the dust collecting chamber 120 can be performed.

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.

  DESCRIPTION OF SYMBOLS 1: Vacuum cleaner, 101: Suction port body, 110: Electric blower, 120: Dust collection chamber, 121: Dust cup, 122: Inlet, 124, 125: Rib, 126: Projection, 130: Ion generation chamber .

Claims (5)

A suction port body having a suction port;
An electric blower that generates intake air;
An intake passage for guiding intake air from the suction port body to the electric blower;
A dust collection chamber disposed in the intake passage and configured to rotate the intake air to separate the dust;
An ion generator for generating ions to be supplied into the dust collection chamber,
A vacuum cleaner in which a plurality of obstacles are formed on an inner peripheral wall surface of the dust collection chamber so that the dust in the dust collection chamber can contact.   The vacuum cleaner according to claim 1, wherein the obstacle is formed so as to extend in a substantially vertical direction in the dust collection chamber.   The vacuum cleaner according to claim 1 or 2, wherein the obstacle is formed so as to extend in a direction substantially perpendicular to an inflow direction of intake air into the dust collection chamber.   The electric vacuum cleaner according to any one of claims 1 to 3, wherein the plurality of obstacles are randomly arranged on an inner peripheral wall surface of the dust collecting chamber. The vacuum cleaner according to any one of claims 1 to 4, wherein the obstacle is formed on an inner peripheral wall surface positioned relatively below the dust collection chamber.

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