JP2011224105A - Electric cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric cleaner high in an air cleaning effect, which can stably supply charged particulate water and prevent a user from feeling repugnant.SOLUTION: The electric cleaner includes an electric blower chamber with a built-in electric blower, an electrostatic atomizing device that generates charged particulate water, and a blower that takes in outside air and exhausts the charged particulate water into the air. The electric cleaner further include an electrostatic atomizing device storage chamber having a discharge port for discharging charged particulate water into the air, a communication path that connects the electric blower chamber and the electrostatic atomizing device storage chamber, and that allows a portion of exhaust air of the electric blower to flow into the electrostatic atomizing device storage chamber, and a control part that detects the current value of the electric blower and controls the energization to the electrostatic atomizing device based on the detected current value.

Description

  The present invention relates to a vacuum cleaner.

  In the conventional vacuum cleaner, the structure which arrange | positions an ion generator in the exhaust path of an electric blower is proposed (for example, refer patent document 1).

  That is, as shown in FIG. 9, an electric blower chamber 103 containing an electric blower 102, a dust collection chamber 105 arranged in front of the electric blower chamber 103 and containing a dust collection bag 104 for collecting dust, , The ion generator 135 is disposed at the upper rear portion of the vacuum cleaner body 101, and a large amount of ions generated by the ion generator 135 are exhausted from the electric blower 102. A configuration has been proposed in which a part of the dust is discharged into the atmosphere and the floating dust is charged over a wide range, and then the dust charged with the ions is collected in the dust bag 104.

  In recent years, electrostatic atomizers that generate nanometer-sized negative ion mist (charged fine particle water) having a deodorizing and sterilizing action for deodorizing and sterilizing the adherend are known. (For example, refer to Patent Document 2).

  That is, as shown in FIG. 10, the electrostatic atomizer 204 includes a discharge electrode 201, a counter electrode 202 positioned opposite to the discharge electrode 201, and moisture in the air is condensed or frozen on the discharge electrode 201. Water supply means 203 for supplying water, and the water supply means 203 is configured by providing a discharge electrode 201 in the cooling section 205 of the Peltier unit 207 having a cooling section 205 and a heat radiating section 206. A configuration has been proposed in which a high voltage is applied between the electrode and the counter electrode 202 to atomize the water held by the discharge electrode 201 to generate nanometer-sized negative ion mist M (charged fine particle water).

  In the conventional vacuum cleaner described in Patent Document 1 described above, the ions generated by the ion generator are released into the room using a part of the exhaust of the electric blower, and are convected in the room, thereby allowing air to flow. Since the dust floating inside is charged and collected, it takes time for the dust in the air charged by the ions to fall on the surface to be cleaned. Moreover, in the conventional vacuum cleaner described in the above-mentioned Patent Document 1, it is not possible to sufficiently deodorize and sterilize viruses, germs, fungi, and the like floating in the air, and a sufficient air cleaning effect. May not be obtained.

  Therefore, in order to quickly drop the dust in the air on the surface to be cleaned and to sufficiently deodorize and disinfect viruses, germs, fungi, etc. floating in the air and improve the air cleaning effect, the above-mentioned patent A vacuum cleaner having a structure in which the conventional electrostatic atomizer described in Patent Document 2 described above is combined with the conventional vacuum cleaner described in Document 1 has been proposed (for example, see Patent Document 3).

JP 2008-212389 A JP 2006-68711 A JP 2009-254786 A

  However, by simply combining the conventional electrostatic atomizer described in Patent Document 2 with the conventional vacuum cleaner described in Patent Document 1, the charged fine particle water can be stably supplied. The present inventors have found that there is still room for improvement from the viewpoint of sufficiently preventing discomfort to the user.

  That is, in the conventional vacuum cleaner described in Patent Document 1 described above, ions are released into the air by a part of the exhaust of the electric blower. As in the case of the electric vacuum cleaner described in the above-mentioned Patent Document 1, when the structure is such that nanometer-sized negative ion mist (charged particulate water) is directly discharged only by the exhaust of the electric blower, the electric motor included in the exhaust air of the electric blower The negative ion mist may disappear due to the heat of the blower.

  In general, when the user starts cleaning and dust is collected in the dust bag, the suction air volume of the electric blower gradually decreases, and the exhaust air volume of the electric blower gradually decreases. descend. In the electric vacuum cleaner described in Patent Document 1 described above, ions are released into the air by a part of the exhaust of the electric blower. Therefore, when the air volume of the exhaust air of the electric blower is reduced, the electrostatic atomizer is used. The amount of exhaust air supplied is also reduced. When the amount of exhaust air supplied to the electrostatic atomizer decreases, the concentration of ozone generated at the high voltage part of the electrostatic atomizer increases and the ozone concentration around the electrode part of the electrostatic atomizer is minimal. In some cases, the deterioration of the resin is accelerated. Moreover, if it is released into the air in a state where the ozone concentration is high, it may irritate the user's respiratory system, eyes, mucous membranes, etc., which may cause discomfort to the user.

  Therefore, a configuration in which a blower for sucking outside air is provided separately from the electric blower and nanometer-sized negative ion mist (charged fine particle water) is discharged only by this blower is also conceivable. Although it is possible to prevent the negative ion mist from disappearing due to the heat of the included electric blower, the air intake hole that takes in the outside air when the blower stops abnormally or gradually closes with dust due to long-term use. In the case where the user has come off, if the user continues cleaning without noticing, the air volume of the outside air supplied from the blower to the electrostatic atomizer also decreases. As a result, the concentration of ozone generated at the high voltage part of the electrostatic atomizer increases, the ozone concentration around the electrode part of the electrostatic atomizer increases minimally, and the deterioration of the resin may be accelerated. It was. Moreover, if it is released into the air in a state where the ozone concentration is high, it may irritate the user's respiratory system, eyes, mucous membranes, etc., which may cause discomfort to the user.

  The present invention has been made in view of the above-described problems of the prior art. Air that can stably supply charged fine particle water and sufficiently prevent the user from feeling uncomfortable is provided. It aims at providing the vacuum cleaner with a high cleaning effect.

  In order to solve the above-described problems of the prior art, the present invention provides an electric blower chamber containing an electric blower for generating suction air, an electrostatic atomizer for generating charged fine particle water, and charged fine particles by sucking outside air. A blower that discharges water into the air, an electrostatic atomizer storage chamber provided with a discharge port for discharging charged particulate water into the air, an electric blower chamber, and an electrostatic atomizer storage A communication passage for communicating a part of the exhaust air from the electric blower into the electrostatic atomizer housing chamber and the electric current value of the electric blower, and electrostatic atomization based on the detected current value. There is provided a vacuum cleaner including a control unit that controls energization of the device.

As described above, in the vacuum cleaner of the present invention, the charged fine particle water is discharged into the air by the outside air sucked by the blower and a part of the exhaust air of the electric blower, and the control unit has a current value of the electric blower. And the energization to the electrostatic atomizer is controlled based on the detected current value.

As a result, the increase in ozone concentration in the electrostatic atomizer can be sufficiently suppressed, so that it is possible to sufficiently prevent the user from feeling uncomfortable and to supply charged fine particle water stably. can do. In addition, by attaching charged fine particle water to dust in the air and adding the mass of charged fine particle water to the dust in the air, dust in the air can be quickly dropped onto the surface to be cleaned. The collection efficiency of can be improved. Furthermore, by attaching charged fine particle water to viruses, bacteria, molds, etc. floating in the air, it is possible to sufficiently deodorize and sterilize viruses, bacteria, molds, etc. floating in the air. Can
A vacuum cleaner having a high air cleaning effect can be provided.

  According to the vacuum cleaner of the present invention, there is provided a vacuum cleaner having a high air cleaning effect that can stably supply charged fine particle water and can sufficiently prevent a user from feeling uncomfortable. Will be able to.

The perspective external view in Embodiment 1 of the vacuum cleaner of this invention Sectional drawing of the vacuum cleaner main body in Embodiment 1 of the vacuum cleaner of this invention. External view of the electrostatic atomizer in Embodiment 1 of the vacuum cleaner of this invention The control block diagram in Embodiment 1 of the vacuum cleaner of this invention The graph which shows the relationship between the ozone concentration and dust collection amount of a dust bag in Embodiment 1 of the vacuum cleaner of this invention The graph which shows the air-cleaning effect in Embodiment 1 of the vacuum cleaner of this invention The control block diagram in Embodiment 2 of the vacuum cleaner of this invention The graph which shows the relationship between the ozone concentration and dust collection amount of a dust bag in Embodiment 2 of the vacuum cleaner of this invention Sectional drawing of the vacuum cleaner body in a conventional vacuum cleaner External view of conventional electrostatic atomizer

  The first invention includes an electric blower chamber incorporating an electric blower that generates suction air, an electrostatic atomizer that generates charged fine particle water, a blower that sucks outside air and discharges charged fine particle water into the air, The electrostatic atomizer storage chamber provided with a discharge port for discharging charged fine particle water into the air, the electric blower chamber, and the electrostatic atomizer storage chamber are communicated with each other. A communication passage for allowing a part of the exhaust air to flow into the electrostatic atomizer housing chamber, a control unit for detecting a current value of the electric blower and controlling energization to the electrostatic atomizer based on the detected current value; This is a vacuum cleaner equipped with

  As a result, the increase in ozone concentration in the electrostatic atomizer can be sufficiently suppressed, so that it is possible to sufficiently prevent the user from feeling uncomfortable and to supply charged fine particle water stably. can do. In addition, by attaching charged fine particle water to dust in the air and adding the mass of charged fine particle water to the dust in the air, dust in the air can be quickly dropped onto the surface to be cleaned. The collection efficiency of can be improved. Furthermore, by attaching charged fine particle water to viruses, bacteria, molds, etc. floating in the air, it is possible to sufficiently deodorize and sterilize viruses, bacteria, molds, etc. floating in the air. It is possible to provide a vacuum cleaner having a high air cleaning effect.

  According to a second aspect of the invention, in the first aspect of the invention, the control unit calculates the air volume of the electric blower from the current value, and controls energization to the electrostatic atomizer based on the calculated air volume.

  Thereby, since the air volume of the exhaust air flowing into the electrostatic atomizer storage chamber can be detected more accurately, an increase in the ozone concentration can be more reliably suppressed.

  In a third aspect of the invention, particularly in the second aspect of the invention, the control unit turns off the energization to the electrostatic atomizer when the air volume is equal to or less than a predetermined value.

  Thereby, since the raise of the ozone concentration in an electrostatic atomizer can be fully suppressed, it can fully prevent giving a user discomfort.

  In a fourth aspect of the invention, particularly in the third aspect of the invention, when the control unit turns off the energization to the electrostatic atomizer, the energization to the blower is also turned off.

  As a result, it is possible to sufficiently suppress an increase in the ozone concentration in the electrostatic atomizer without consuming unnecessary electric power, and thus sufficiently preventing discomfort to the user. it can.

  In a fifth aspect of the invention, particularly in the second aspect of the invention, the control unit intermittently controls energization to the electrostatic atomizer when the air volume is equal to or less than a predetermined value.

  Thereby, since the raise of the ozone concentration in an electrostatic atomizer can be fully suppressed, it can fully prevent giving a user discomfort.

  Hereinafter, a preferred embodiment of a vacuum cleaner of the present invention will be described in detail with reference to the drawings. In the following description, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

(Embodiment 1)
Embodiment 1 of the present invention will be described with reference to FIGS.

  FIG. 1 is a perspective external view of Embodiment 1 of the electric vacuum cleaner of the present invention. Moreover, FIG. 2 is sectional drawing of the cleaner main body in Embodiment 1 of the vacuum cleaner of this invention. Furthermore, FIG. 3 is an external view of the electrostatic atomizer in Embodiment 1 of the vacuum cleaner of this invention. Moreover, FIG. 4 is a control block diagram in Embodiment 1 of the vacuum cleaner of this invention. Furthermore, FIG. 5 is a graph showing the relationship between the ozone concentration and the amount of dust collected in the dust bag in Embodiment 1 of the electric vacuum cleaner of the present invention. Moreover, FIG. 6 is a graph which shows the air cleaning effect in Embodiment 1 of the vacuum cleaner of this invention.

  As shown in FIG. 1, an electric vacuum cleaner (not shown) mainly includes a cleaner body 1, a suction tool 10 that sucks dust on a surface to be cleaned, and one end detachably connected to the cleaner body 1. Hose 8 having one end connected to hose 8 and the other end connected to suction tool 10 is a telescopic or jointable extension tube 9.

  The suction tool 10 includes a rotating brush 11 that scrapes dust on the surface to be cleaned and an electric motor 13 that rotates the rotating brush 11 via a belt 12.

A hand operating unit 6 is provided at the end of the hose 8 on the side of the extension pipe 9, and based on a signal from the hand operating unit 6, the control unit 30 described later performs various operation modes (strong and strong) of the electric blower 2. The suction force (medium, weak, cutting, etc.) is controlled. Further, a dust detector 7 that detects the amount of dust sucked from the suction tool 10 is provided at the end of the hose 8 on the cleaner body 1 side. The dust detection unit 7 includes a light emitting element 7a and a light receiving element 7b, and the light emitting element 7a and the light receiving element 7b are arranged to face each other. The dust detector 7 detects a pulse waveform generated when light received by the light receiving element 7b is blocked by dust when the dust passes between the light emitting element 7a and the light receiving element 7b. The amount of detected.

  The vacuum cleaner main body 1 is mainly detachably disposed on the upstream side of the electric blower chamber 20 (see FIG. 2), which houses the electric blower 2 that generates suction air, and is sucked from the suction tool 10. And an electric dust collection bag 3 for collecting the collected dust. The dust bag 3 is made of thermoplastic fibers such as polypropylene, and is charged by being rubbed with suction air or the like.

  The vacuum cleaner main body 1 includes a control unit 30 having an air volume detection unit 38 that calculates the air volume of the suction air of the electric blower 2 that is reduced while dust is collected in the dust bag 3 from the current value of the electric blower 2. Has been placed.

  Further, traveling wheels 4 are rotatably attached to both sides of the lower rear portion of the cleaner body 1. A traveling caster 5 is similarly attached to the bottom surface in front of the cleaner body 1.

  As shown in FIG. 2, an electrostatic atomizer housing chamber 21 separated from the electric blower chamber 20 by a resin or the like is provided at the upper rear portion of the cleaner body 1, that is, above the electric blower chamber 20. ing. In the electrostatic atomizer storage chamber 21, an electrostatic atomizer 33 that generates charged fine particle water, an electrostatic atomizer controller 22 that controls the electrostatic atomizer 33, and outside air are charged by charging. A blower 35 that generates an airflow that discharges and diffuses the particulate water into the air is incorporated.

  The electrostatic atomizer housing chamber 21 is provided with an air inlet 36, and the blower 35 sucks outside air from the air inlet 36. A filter 51 is detachably provided at the air inlet 36. When the blower 35 sucks in outside air, dust in the air enters the electrostatic atomizer housing chamber 21 from the air inlet 36. It is preventing. Further, a charged fine particle water discharge port 37 is provided behind the electrostatic atomizer storage chamber 21, and the charged fine particle water is discharged from the charged fine particle water discharge port 37 into the air by the outside air sucked by the blower 35. (In the figure, arrow X).

  In addition, a main exhaust port 29 for discharging the exhaust air of the electric blower 2 is provided behind the cleaner body 1, and the charged fine particle water is discharged from the main exhaust port 29 (in the drawing, It is also configured to be diffused indoors by the arrow Y).

  Furthermore, the electric blower chamber 20 and the electrostatic atomizer housing chamber 21 are communicated with each other by a communication passage 50, and a part of the exhaust air from the electric blower 2 through this communication passage 50 (arrow Z in the figure). Flows into the electrostatic atomizer housing chamber 21 and is discharged from the charged fine particle water discharge port 37.

  As shown in FIGS. 3 and 4, the electrostatic atomizer 33 includes a Peltier element 23, a needle-like electrode 25 connected to the cooling side of the Peltier element 23, and a heat dissipation connected to the heat dissipation side of the Peltier element 23. It is comprised from the fin 24. FIG. A ground electrode 26 is disposed on the tip side of the needle electrode 25. The needle-like electrode 25 and the radiation fin 24 are electrically insulated from the Peltier element 23, but are connected to the Peltier element 23 in terms of temperature transmission. When a voltage is applied to the Peltier element 23, the needle-like electrode 25 connected to the cooling side of the Peltier element 23 is cooled, and the heat dissipation fin 24 connected to the heat dissipation side of the Peltier element 23 releases heat from the Peltier element 23. The heat generated on the side is dissipated.

  As shown in FIGS. 3 and 4, the electrostatic atomizer control unit 22 applies a voltage to the Peltier element 23, and a high voltage generator 27 that applies a high voltage between the needle electrode 25 and the ground electrode 26. And a DC power supply unit 28 to be applied.

  As shown in FIG. 4, the control unit 30 is configured by a microcomputer or the like, and has an air volume detection unit 38 that calculates the air volume of the suction air of the electric blower 2 from the current value of the electric blower 2. The control unit 30 takes in signals from the hand operation unit 6 and the dust detection unit 7 operated by the user, and based on the signals, starts the phase control for the electric motor drive unit 32 and the electric blower drive unit 31. Controls to output pulses. The electric motor drive unit 32 and the electric blower drive unit 31 control the electric motor 13 and the electric blower 2, respectively, based on signals from the control unit 30. The electric blower drive unit 31 is composed of a bidirectional thyristor or the like, and controls the phase of the electric blower 2 to vary the suction force.

  In addition, the control unit 30 controls the electrostatic atomizer driving unit 40 to supply electric power to the electrostatic atomizer control unit 22 that operates the electrostatic atomizer 33, and the electrostatic atomizer 33. Is controlling. When power is supplied to the electrostatic atomizer control unit 22, power is supplied to the high voltage generation unit 27 and the DC power supply unit 28, and voltage is applied to the needle electrode 25, the ground electrode 26, and the Peltier element 23. The Further, the control unit 30 controls the blower 35.

  About the vacuum cleaner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  For example, when the user operates the hand operation unit 6 and selects “strong” having a strong suction force as the operation mode of the electric blower 2, the control unit 30 performs electric driving based on a signal from the hand operation unit 6. A predetermined signal is sent to the blower drive unit 31 and the electric motor drive unit 32 to drive the electric blower 2 and the electric motor 13. Thereby, the dust on the surface to be cleaned is swept up by the rotating brush 11 and sucked from the suction tool 10 by the suction air generated by the electric blower 2. The sucked dust is collected by the dust bag 3 in the cleaner body 1 through the extension pipe 9 and the hose 8. In FIG. 2, as indicated by an arrow Y, exhaust air from the electric blower 2 (suction air that has passed through the electric blower after dust is removed) passes through a main exhaust port 29 provided at the rear of the cleaner body 1. While being exhausted to the outside of the main body 1 of the vacuum cleaner, a part thereof flows into the electrostatic atomizer housing chamber 21 through the communication passage 50 as shown by an arrow Z in FIG. It is discharged from the water discharge port 37.

  The controller 30 operates the blower 35 simultaneously with driving the electric blower 2 and the electric motor 13. Thereby, as indicated by an arrow X in FIG. 2, outside air is sucked from the suction port 36, and the sucked outside air is blown to the electrostatic atomizer 35, and the vacuum cleaner main body 1 is discharged from the charged particulate water discharge port 37. To the outside.

  In addition, the control unit 30 operates the blower 35 and sends a signal to the electrostatic atomizer driving unit 40 to supply power to the electrostatic atomizer control unit 22. The high voltage generation unit 27 and the DC power supply unit 28 is operated. The DC power supply unit 28 applies a voltage to the Peltier element 23 to cool the needle electrode 25. When the needle-like electrode 25 is cooled, moisture around the needle-like electrode 25 is condensed and water is generated on the needle-like electrode 25. At this time, a high voltage (for example, about 6000 V) is applied between the needle electrode 25 and the ground electrode 26 by the high voltage generator 27, so Corona discharge occurs, a high voltage is applied to the water generated on the needle-like electrode 25, and charged fine particle water (for example, a diameter of 5 to 20 mm) is generated.

  The charged fine particle water generated by the electrostatic atomizer 33 is one of the exhaust air of the electric blower 2 that has flowed into the electrostatic atomizer housing chamber 21 through the outside air sucked by the blower 35 and the communication passage 50. Are discharged from the charged fine particle water discharge port 37 to the outside of the cleaner main body 1.

  Here, as shown in FIG. 5, the air volume of the discharged air that discharges the charged fine particle water flowing through the charged fine particle water discharge port 37 to the outside of the cleaner body 1 passes through the communication path 50 with the blow air volume A of the blower 35. The air volume A + B is the sum of the exhaust air volume B of the electric blower 2. When the amount of dust collected in the dust bag 3 increases, the air volume of the suction air from the electric blower 2 decreases, and the air volume B from the exhaust air of the electric blower 2 passing through the communication passage 50 changes to the air volume C. And drop. Therefore, the air volume of the discharge air flowing through the charged fine particle water discharge port 37 decreases from the air volume A + B to the air flow A + C, and the ozone concentration in the vicinity of the charged fine particle water discharge port 37 increases.

  Therefore, the control unit 30 stores in advance a predetermined value of the suction air volume of the electric blower 2. When the air volume of the suction air of the electric blower 2 calculated by the air volume detection unit 38 is equal to or less than a predetermined value, the control unit 30 has a small air volume of the exhaust air of the electric blower 2 itself and has passed through the connecting passage 50. When the air volume of the exhaust air from the blower 2 is small, turning off the energization to the electrostatic atomizer control unit 22 turns off the electrostatic atomizer 33 and increases the ozone concentration in the vicinity of the charged fine particle water discharge port 37. Suppress. At this time, since it is not necessary to blow air to the electrostatic atomizer 33 by the blower 35, the control unit 30 turns off the energization to the blower 35. Thereby, useless consumption of electric power can be suppressed.

  The same control as when the user selects “strong” as the operation mode of the electric blower 2 also when the standard “medium” is selected as the suction force and “weak” where the suction force is low is selected. Thus, the ozone concentration in the vicinity of the charged fine particle water discharge port 37 can be reliably suppressed in various operation modes.

  Here, the test result according to the test method of the standard JEM1467 of an air cleaner is demonstrated using the conventional vacuum cleaner and the electric vacuum cleaner of this Embodiment. In the test, 5 cigarettes are smoked with a cigarette smoker in a measurement chamber of 20 to 30 cubic meters, and the concentration distribution is made constant while operating a stirring fan similar to the cigarette smoker. Thereafter, the decay rate of tobacco smoke having a particle diameter of 0.3 μm is measured every hour while the vacuum cleaner is operated.

  As shown in FIG. 6, in the comparison after 5 minutes of operation time, the removal rate of the vacuum cleaner of the present embodiment was about 20% better than that of the conventional vacuum cleaner. It can be seen from the graph that tobacco smoke settles on the floor more quickly and collects dust than a conventional vacuum cleaner. Cigarette smoke used this time is one of the floating dust, but there are various dust particles with a particle size of up to about 1 μm. In addition, pollen and the like in sedimentary dust have a long time of floating with a particle diameter of several tens of μm. The larger the floating particle size, the more negative ion mist can be attached and charged, so that faster sedimentation to the floor surface can be expected.

  As described above, in the present embodiment, when the air volume of the suction air of the electric blower 2 is higher than a predetermined value, the charged fine particle water discharged from the charged fine particle water discharge port 37 is sucked by the blower 35. The outside air and the exhaust air of the electric blower 2 that has flowed into the electrostatic atomizer housing chamber 21 through the communication passage 50 are diffused into the room. As a result, charged particulate water adheres to dust floating in the room, and the mass of charged particulate water is added to dust in the air, so that dust in the air can be quickly dropped onto the surface to be cleaned. The dust collection efficiency can be improved. Furthermore, by attaching charged fine particle water to viruses, bacteria, molds, etc. floating in the air, it is possible to sufficiently deodorize and sterilize viruses, bacteria, molds, etc. floating in the air. It is possible to provide a vacuum cleaner having a high air cleaning effect.

Further, when the air volume of the suction air of the electric blower 2 is equal to or less than a predetermined value, the control unit 30 turns off the energization to the electrostatic atomizer control unit 22 and turns off the electrostatic atomizer 33. In addition, an increase in the ozone concentration in the vicinity of the charged fine particle water discharge port 37 can be suppressed, and it is possible to sufficiently prevent the user from feeling uncomfortable.

(Embodiment 2)
Embodiment 1 of the present invention will be described with reference to FIGS. Note that a description of the same components as those in the first embodiment described above is omitted.

  FIG. 7 is a control block diagram in Embodiment 2 of the electric vacuum cleaner of the present invention. FIG. 8 is a graph showing the relationship between the ozone concentration and the amount of dust collected in the dust bag in Embodiment 2 of the electric vacuum cleaner of the present invention.

  As shown in FIGS. 7 and 8, in the present embodiment, the control unit 30 is configured so that the suction air volume of the electric blower 2 calculated by the air volume detection unit 38 is equal to or less than a predetermined value, that is, the electric blower. When the flow rate of the exhaust air of 2 is small and the flow rate of the exhaust air of the electric blower 2 passing through the connecting passage 50 is small, the energization to the electrostatic atomizer control unit 22 is intermittently controlled.

  For example, when the user operates the hand operation unit 6 and selects “strong” having a strong suction force as the operation mode of the electric blower 2, the control unit 30 performs electric driving based on a signal from the hand operation unit 6. A predetermined signal is sent to the blower drive unit 31 and the electric motor drive unit 32 to drive the electric blower 2 and the electric motor 13. Thereby, the dust on the surface to be cleaned is swept up by the rotating brush 11 and sucked from the suction tool 10 by the suction air generated by the electric blower 2. The sucked dust is collected by the dust bag 3 in the cleaner body 1 through the extension pipe 9 and the hose 8. In FIG. 2, as indicated by an arrow Y, exhaust air from the electric blower 2 (suction air that has passed through the electric blower after dust is removed) passes through a main exhaust port 29 provided at the rear of the cleaner body 1. While being exhausted to the outside of the main body 1 of the vacuum cleaner, a part thereof flows into the electrostatic atomizer housing chamber 21 through the communication passage 50 as shown by an arrow Z in FIG. It is discharged from the water discharge port 37.

  The controller 30 operates the blower 35 simultaneously with driving the electric blower 2 and the electric motor 13. Thereby, as indicated by an arrow X in FIG. 2, outside air is sucked from the suction port 36, and the sucked outside air is blown to the electrostatic atomizer 35, and the vacuum cleaner main body 1 is discharged from the charged particulate water discharge port 37. To the outside.

  In addition, the control unit 30 operates the blower 35 and sends a signal to the electrostatic atomizer driving unit 40 to supply power to the electrostatic atomizer control unit 22. The high voltage generation unit 27 and the DC power supply unit 28 is operated. The DC power supply unit 28 applies a voltage to the Peltier element 23 to cool the needle electrode 25. When the needle-like electrode 25 is cooled, moisture around the needle-like electrode 25 is condensed and water is generated on the needle-like electrode 25. At this time, since a high voltage is applied between the needle electrode 25 and the ground electrode 26 by the high voltage generator 27, a corona discharge is generated between the needle electrode 25 and the ground electrode 26, A high voltage is applied to the water generated on the needle electrode 25 to generate charged fine particle water.

  The charged fine particle water generated by the electrostatic atomizer 33 is one of the exhaust air of the electric blower 2 that has flowed into the electrostatic atomizer housing chamber 21 through the outside air sucked by the blower 35 and the communication passage 50. Are discharged from the charged fine particle water discharge port 37 to the outside of the cleaner main body 1.

Here, as shown in FIG. 8, the air volume of the discharged air that discharges the charged fine particle water flowing through the charged fine particle water discharge port 37 to the outside of the cleaner body 1 has passed through the communication path 50 with the air flow A of the blower 35. The air volume A + B is the sum of the exhaust air volume B of the electric blower 2. When the amount of dust collected in the dust bag 3 increases, the air volume of the suction air from the electric blower 2 decreases, and the air volume B from the exhaust air of the electric blower 2 passing through the communication passage 50 changes to the air volume C. And drop. Therefore, the air volume of the discharge air flowing through the charged fine particle water discharge port 37 decreases from the air volume A + B to the air flow A + C, and the ozone concentration in the vicinity of the charged fine particle water discharge port 37 increases.

  Therefore, the control unit 30 stores in advance a predetermined value of the suction air volume of the electric blower 2. When the air volume of the suction air of the electric blower 2 calculated by the air volume detection unit 38 is equal to or less than a predetermined value, the control unit 30 has a small air volume of the exhaust air of the electric blower 2 itself and has passed through the connecting passage 50. When the air volume of the exhaust air from the blower 2 is small, an increase in the ozone concentration in the vicinity of the charged fine particle water discharge port 37 is suppressed by intermittently controlling energization to the electrostatic atomizer control unit 22.

  The same control as when the user selects “strong” as the operation mode of the electric blower 2 also when the standard “medium” is selected as the suction force and “weak” where the suction force is low is selected. Thus, the ozone concentration in the vicinity of the charged fine particle water discharge port 37 can be reliably suppressed in various operation modes.

  Here, in this Embodiment, although the control part 30 demonstrated the form provided with one predetermined value of the air volume of the suction air of the electric blower 2, a plurality of predetermined values may be provided. This makes it possible to set and control the intermittent period at each stage, so that the ozone concentration in the vicinity of the charged fine particle water discharge port 37 can be suppressed while discharging the charged fine particle water more optimally.

  As described above, in the present embodiment, when the air volume of the suction air of the electric blower 2 is higher than a predetermined value, the charged fine particle water discharged from the charged fine particle water discharge port 37 is sucked by the blower 35. The outside air and the exhaust air of the electric blower 2 that has flowed into the electrostatic atomizer housing chamber 21 through the communication passage 50 are diffused into the room. As a result, charged particulate water adheres to dust floating in the room, and the mass of charged particulate water is added to dust in the air, so that dust in the air can be quickly dropped onto the surface to be cleaned. The dust collection efficiency can be improved. Furthermore, by attaching charged fine particle water to viruses, bacteria, molds, etc. floating in the air, it is possible to sufficiently deodorize and sterilize viruses, bacteria, molds, etc. floating in the air. It is possible to provide a vacuum cleaner having a high air cleaning effect.

  In addition, when the amount of suction air from the electric blower 2 is equal to or less than a predetermined value, the control unit 30 indirectly controls energization to the electrostatic atomizer control unit 22, so ozone near the charged fine particle water discharge port 37. The increase in concentration can be suppressed, and it is possible to sufficiently prevent the user from feeling uncomfortable.

  The vacuum cleaner of the present invention provides a vacuum cleaner with a high air cleaning effect that can stably supply charged fine particle water and sufficiently prevent discomfort to the user. Therefore, it can be suitably applied to the fields and uses of various household and commercial vacuum cleaners equipped with an electrostatic atomizer that generates charged fine particle water.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner body 2 Electric blower 3 Dust collection bag 4 Wheel 5 Caster 6 Hand operation part 7 Dust detection part 7a Light emitting element 7b Light receiving element 8 Hose 9 Extension pipe 10 Suction tool 11 Rotating brush 12 Belt 13 Electric motor 20 Electric blower chamber 21 Static Electromist atomizer storage chamber 22 Electrostatic atomizer controller 23 Peltier element 24 Radiation fin 25 Needle electrode 26 Ground electrode 27 High voltage generator 28 DC power source 29 Main exhaust port 30 Controller 31 Electric blower drive unit 32 Electric motor Drive unit 33 Electrostatic atomizer 35 Blower 36 Air intake port 37 Charged particulate water discharge port 38 Air volume detection unit 40 Electrostatic atomizer drive unit 50 Communication path 51 Filter

Claims (5)

An electric blower chamber containing an electric blower that generates suction air;
An electrostatic atomizer that generates charged fine particle water and a blower that sucks outside air and discharges the charged fine particle water into the air, and has a discharge port for discharging the charged fine particle water into the air. An electrostatic atomizer storage chamber,
A communication passage that communicates the electric blower chamber and the electrostatic atomizer housing chamber, and allows a part of the exhaust air of the electric blower to flow into the electrostatic atomizer housing chamber;
A controller that detects a current value of the electric blower and controls energization to the electrostatic atomizer based on the detected current value;
Vacuum cleaner with   The electric vacuum cleaner according to claim 1, wherein the control unit calculates an air volume of the electric blower from the current value, and controls energization to the electrostatic atomizer based on the calculated air volume.   The said control part is a vacuum cleaner of Claim 2 which turns off the electricity supply to the said electrostatic atomizer, when the said air volume is below the predetermined value defined beforehand.   The said control part is a vacuum cleaner of Claim 3 which also turns off the electricity supply to the said air blower, when the electricity supply to the said electrostatic atomizer is turned off.   The electric vacuum cleaner according to claim 2, wherein the control unit intermittently controls energization to the electrostatic atomizer when the air volume is equal to or less than a predetermined value.