JP2009207798A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner with excellent dust collection efficiency, capable of efficiently increasing anions from discharge electrodes without raising the flow rate of exhaust blow from a cleaner body. <P>SOLUTION: The vacuum cleaner includes: an electric blower chamber 12 for storing an electric blower 11 for generating suction blow; a dust collecting chamber 14 for collecting dust; the two separated first and second exhaust passages 35a, 35b for discharging the exhaust from the electric blower 11 to an external part; the discharge electrodes 36a, 36b respectively arranged in the first and second exhaust passages 35a, 35b so as to radiate the anions; and a high voltage circuit (not shown in the figure) for applying a high voltage onto the discharge electrodes 36a, 36b. The discharge electrodes 36a, 36b are respectively arranged in the two separated first and second exhaust passages 35a, 35b, thereby efficiently increasing an anion amount in response to the number of the discharge electrodes 36a, 36b. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner having an ion generator that generates ions.

  As a conventional electric vacuum cleaner of this type, one as shown in FIG. 7 is common (see, for example, Patent Document 1).

  FIG. 7 is a cross-sectional view of a conventional electric vacuum cleaner described in Patent Document 1. In FIG. 7, reference numeral 1 denotes an ion generator that is provided with a single ion electrode 2 and generates negative ions, and is provided on the rear upper part of the cleaner body 3 and the upper part of the electric blower 4 that generates suction air. Yes. Reference numeral 7 denotes a high voltage power supply device for applying a high voltage of 5 kV to the ion electrode 2.

  An ion discharge port 5 that discharges negative ions is provided behind the cleaner body 3, and most of the exhaust air from the electric blower 4 is discharged from an exhaust port 6 provided on the rear wall of the cleaner body 3. However, the remaining exhaust air passes through the ion generator 1 and is discharged from the ion discharge port 5 to the outside air together with negative ions.

In general, airborne dust in the air is positively charged, so that they are attracted to negative ions released from the cleaner body 3 and fall as a lump onto the floor surface. This makes it possible to suck airborne dust that has been difficult to suck in the air.
JP 2004-33454 A

  When ions are generated by discharging between two discharge electrodes having different polarities, the amount of ions emitted can be freely changed to some extent by the voltage applied between the two discharge electrodes, the distance between the discharge electrodes, and the like. In the case of a unipolar discharge electrode, that is, only the ion electrode 2 to which only a positive high voltage is applied as in the conventional vacuum cleaner, there is a characteristic that the amount of negative ions generated around it is saturated. . Therefore, in the configuration of the conventional vacuum cleaner, there is a problem that the negative ions cannot be sufficiently added to the exhaust air from the electric blower 4 and the capability of the high-voltage power supply device cannot be fully utilized.

  As a method of increasing the amount of negative ions added to the exhaust air from the electric blower 4, the exhaust air from the electric blower 4 is applied to the ion electrode 2 at a high speed, and the negative ions generated around the ion electrode 2 are strongly applied. However, if this is done, the flow velocity of the exhaust air exhausted from the cleaner body 3 increases, and dust on the floor before cleaning and dust adhering to the furniture is blown away. It is not preferable for hygiene, such as hitting.

  In addition, a method of providing a plurality of discharge electrodes close to one ventilation path is also conceivable. However, as a result of the experiment, the amount of generated negative ions is saturated, and the amount of generated negative ions cannot be increased. It was.

  The present invention solves the above-described conventional problems, and efficiently increases negative ions from the ion electrode without increasing the flow velocity of the exhaust air from the vacuum cleaner body, and has a good dust collection efficiency. The purpose is to provide.

  In order to solve the above conventional problems, an electric vacuum cleaner of the present invention includes an electric blower chamber that houses an electric blower that generates suction air, a dust collection chamber that collects dust, and exhaust air from the electric blower. Comprising at least two separate exhaust passages for discharging to the discharge passage, discharge electrodes that are arranged in each of the exhaust passages and emit negative ions, and a high-voltage circuit that applies a high voltage to the discharge electrodes, Since the discharge electrode is arranged in each of the separated exhaust passages, the amount of negative ions generated can be efficiently increased according to the number of discharge electrodes.

  Since the vacuum cleaner of the present invention can efficiently increase the negative ions from the discharge electrode without increasing the flow velocity of the exhaust air from the vacuum cleaner body, the dust collection efficiency is high.

  According to a first aspect of the present invention, there is provided an electric blower chamber that houses an electric blower that emits suction air, a dust collection chamber that collects dust, and at least two separate exhausts for discharging the exhaust from the electric blower to the outside. A discharge electrode arranged in each of the exhaust passages to emit negative ions, and a high-voltage circuit for applying a high voltage to the discharge electrodes, and discharges in each of the plurality of separated exhaust passages. Since the electrodes are arranged, the amount of generated negative ions can be efficiently increased according to the number of discharge electrodes.

  In the second invention, in particular, a high voltage is applied to a plurality of discharge electrodes from one high-voltage circuit of the first invention, and there is no need to provide a high-voltage circuit for each discharge electrode. Can be suppressed.

  In the third aspect of the invention, in particular, a flat portion is formed on the surface of the member forming the exhaust passage in which the discharge electrode of the first or second aspect of the invention is arranged. By discharging using this flat portion, It is possible to prevent charging of the member forming the exhaust passage, and to improve a decrease in discharge performance due to charging. Further, by configuring the flat portion, a metal foil such as an aluminum sheet can be easily attached, and more efficient charge removal can be performed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
The vacuum cleaner in the 1st Embodiment of this invention is demonstrated using FIGS.

  FIG. 1 is an overall perspective view of the electric vacuum cleaner according to the present embodiment, FIG. 2 is a cross-sectional view of the electric vacuum cleaner, and FIG. 3 is a perspective view as seen from the rear of the main body of the vacuum cleaner. 4 is a perspective view (with the lid removed) of the vacuum cleaner main body, FIG. 5 is an exploded perspective view of the ion generator of the vacuum cleaner, and an overall perspective view of the vacuum cleaner as viewed from the back. 6 is a cross-sectional view of the ion generator portion of FIG.

  1-6, the vacuum cleaner main body 10 is provided with an electric blower chamber 12 having a built-in electric blower 11 at the rear, and a dust collection chamber for storing a dust collection bag 13 that detachably collects dust at the front. 14, a pair of traveling wheels 15 are rotatably attached to both sides of the lower rear portion, and a traveling caster 16 is similarly attached to the front portion of the bottom surface. At the front portion of the cleaner body 10, a hose insertion port 19 to which a connection pipe 18 provided at one end of the hose 17 is detachably connected is provided.

  The other end of the hose 17 is provided with a tip pipe 21 having a handle 20 that is gripped during cleaning. Reference numeral 22 denotes a telescopic or jointable extension pipe, whose downstream end is detachably connected to the tip pipe 21 and whose other end is a suction brush incorporating a dust brush (not shown). The tool 23 is detachably connected.

  The outer body of the vacuum cleaner main body 10 is composed of a lower body 10a and an upper body 10b that cover and store an electric blower chamber 12 that houses an electric blower 11 in the rear.

  The front part of the electric blower 11 is supported in the electric blower chamber 12 by a support spacer 24 made of an elastic material, and the rear part is a support fan 25 made of the same elastic material. 26 is a partition wall that partitions the electric blower chamber 12 and the dust collection chamber 14, and a lattice-shaped partition opening portion 28 that communicates with the suction opening 27 of the electric blower 11 is provided substantially at the center. It is covered with a primary filter 29 from the dust chamber 14 side.

  Reference numeral 32 denotes a lid that covers an ion generator 33 (to be described later), which is fixed to the cleaner body 10 and has ion discharge ports 32a on the left and right of the rear wall.

  In addition, when the vacuum cleaner body 10 is stored in an upright state, each of the protruding rest portions 31b and 31c is also formed at the lower portion of the rear wall of the vacuum cleaner body 10 so as to stably support the vacuum cleaner body 10. The rest portion 31 a is formed at the center of the rear wall of the lid 32.

  Reference numeral 33 denotes an ion generator that is attached to the upper rear portion of the cleaner body 10 and generates negative ions. The outer shell 34 includes two parts, a front cover 34a and a rear cover 34b fixed to the rear cover 34b. Two exhaust passages, a first exhaust passage 35a and a second exhaust passage 35b, are independently formed in the cover 34b.

  When the front cover 34a and the rear cover 34b are assembled, a passage member 38 having a substantially semicircular cross section is integrally formed at the lower part of the left and right ends of the front cover 34a and the rear cover 34b. An air passage 39 communicating with the electric blower chamber 12 is formed by the facing passage member 38.

  Reference numerals 36a and 36b denote discharge electrodes that are disposed inside the first exhaust passage 35a and the second exhaust passage 35b and emit negative ions, respectively, and are fixed to the rear cover 34a by screws 37.

  Reference numeral 40 denotes a high-voltage circuit that is disposed in the electric blower chamber 12 and applies a high voltage of 5 kV to the discharge electrodes 36a and 36b via the high-voltage electric wire 41. 41a includes the discharge electrode 36a and the discharge electrode 36b. It is a crossover that connects electrically.

  Further, as shown in FIG. 5, the first exhaust passage 35a and the second exhaust passage 35b are placed at a predetermined distance on the surface of the rear cover 34b having the first exhaust passage 35a and the second exhaust passage 35b. A flat portion 34c is formed on the upper surface of the holding portion 34d for holding the plate, and a metal foil 42 (shaded portion) such as an aluminum sheet is attached to the flat portion 34c for neutralizing the reverse charge charged in the rear cover 34b. Has been.

  In the above embodiment, the discharge electrode 36a and the discharge electrode 36b are provided separately and are both electrically connected by the crossover wire 41a. However, the discharge electrode 36a and the discharge electrode 36b are formed as a single component. If the two needle-like portions 36c that radiate negative ions are formed apart from each other, and each needle-like portion 36c is disposed inside the first and second exhaust passages 35a and 35b, the crossover wire 41a is unnecessary. In addition, assembly becomes easy.

  The operation and action of the vacuum cleaner in the present embodiment configured as described above are as follows.

  When the operation of the vacuum cleaner in the present embodiment is started by operating a switch (not shown) provided on the handle 20, dust on the floor surface is sucked together with outside air by the suction air from the electric blower 11. The air that has been sucked into the dust collection bag 13 through the extension pipe 22, the tip pipe 21, and the hose 17, where dust is collected and cleaned, flows into the electric blower chamber 12 through the primary filter 29, Exhaust air flows from the electric blower chamber 12 to the outside.

  As shown by an arrow A in FIG. 6, most of the exhaust air from the electric blower 11 is discharged to the outside through the secondary filter 43 disposed behind the cleaner body 10. .

  The remainder of the exhaust air from the electric blower 11 passes through the tertiary filter 46 that collects fine dust and enters the ion generator 33 from the left and right air passages 39 of the ion generator 33 as indicated by an arrow B. It flows in and is divided into the first exhaust passage 35a and the second exhaust passage 35b. Negative ions emitted by corona discharge from the needle-like portions 36c of the discharge electrodes 36a and 36b are added to the exhaust air flowing into the first exhaust passage 35a and the second exhaust passage 35b, respectively. Is added from the exhaust outlets 35c and 35d of the first exhaust passage 35a and the second exhaust passage 35b, and finally from the ion discharge port 32a of the lid 32. It is discharged outside and negative ions are diffused inside the room.

  Negative ion ions have a deodorizing effect and antibacterial effect. In addition, negative ion radiation while fine dust is generally positively charged has a dust separation effect and can improve the indoor environment for cleaning. .

  It should be noted that the exhaust air velocity from the ion emission port 32a that emits negative ions is made faster and more effective in the room than the exhaust air velocity discharged from the exhaust portion 44 provided on the rear wall of the cleaner body 10. It is possible to release a large amount of negative ions that have a positive effect on the body.

  In the present embodiment, since the ion generator 33 is arranged on the downstream side of the tertiary filter 46, dust or the like does not adhere to the surface, and the release of negative ions is hindered by the adhesion of dust or the like. Thus, generation of negative ions is not hindered, and the initial performance can be maintained for a long time.

  As described above, according to the present embodiment, since the discharge electrodes 36a and 36b are arranged in the separated first exhaust passage 35a and second exhaust passage 35b, the number of the discharge electrodes 36a and 36b. Accordingly, the amount of negative ions generated can be increased efficiently.

  In addition, since a high voltage is applied to the plurality of discharge electrodes 36a and 36b from one high-voltage circuit 40, it is not necessary to provide the high-voltage circuit 40 for each of the discharge electrodes 36a and 36b, thereby suppressing an increase in cost.

  Further, when negative ions are released from the discharge electrode and the member forming the exhaust passage where the discharge electrode is disposed is charged with a reverse charge, the negative ion release performance at the discharge electrode is lowered. Since the flat portion 34c is provided on the surface of the outer shell 34 of the ion generator 33 having the first exhaust passage 35a and the second exhaust passage 35b, it is easy to attach a metal foil 42 such as an aluminum sheet for static elimination. And it becomes difficult to peel off.

  Further, in the present embodiment, the ion release port 32a that discharges negative ions to the outside is formed not on the cleaner body 10 but on the cover body 32 that is smaller than the cleaner body 10, so that the mold configuration is Simplification and reduction of mold cost are possible.

  As described above, the vacuum cleaner of the present invention can improve the dust collection efficiency by efficiently increasing the negative ions from the discharge electrode without increasing the flow velocity of the exhaust air from the cleaner body. Therefore, it can be applied to various vacuum cleaners.

Whole perspective view of the electric vacuum cleaner in the present embodiment Cross section of the vacuum cleaner The perspective view seen from the back of the vacuum cleaner body of the same vacuum cleaner Perspective view of the vacuum cleaner viewed from the rear (with the lid removed) (A) The exploded perspective view of the ion generator of the vacuum cleaner, (b) The whole perspective view seen from the back of the ion generator AA sectional view of FIG. Cross-sectional view of a conventional vacuum cleaner

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vacuum cleaner main body 11 Electric blower 12 Electric blower chamber 14 Dust collection chamber 33 Ion generator 34b Rear cover (member)
34c Plane portion 35a First exhaust passage (exhaust passage)
35b Second exhaust passage (exhaust passage)
36a, 36b Discharge electrode 40 High voltage circuit

Claims (3)

An electric blower chamber that houses an electric blower that emits suction air; a dust collection chamber that collects dust; at least two separate exhaust passages for discharging the exhaust from the electric blower to the outside; and the exhaust passage And a high-voltage circuit for applying a high voltage to the discharge electrode. The vacuum cleaner according to claim 1, wherein a high voltage is applied to a plurality of discharge electrodes from one high-voltage circuit. The vacuum cleaner of Claim 1 or 2 which formed the plane part in the surface of the member which forms the exhaust passage by which the discharge electrode was distribute | arranged.

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