JP2004016944A - Air cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air cleaner which keeps high dust collection capacity, increases the rigidity of a counter electrode part, holds the installating position of the counter electrode part, realizes miniaturization, enhances air passing properties and is easy in maintenance. <P>SOLUTION: The air cleaner has a discharge part 18 and a counter electrode part 22 and is equipped with the charge part 10 for charging dust by the discharge from the discharge part 18 to the counter electrode part 22, a dust collection part 11 for collecting charged dust and a blow part 8 for sending air to the charge part 10 and the dust collection part 11. The counter electrode part 22 is constituted of the conductive plates 24 positioned on both sides of the discharge part 8 in the direction vertical to an air blowing direction and the connection plate 25 for connecting both conductive plates 24. An air through-hole 26 is provided at the position overlapped with the discharge part 18 of the connection plate 25 in the air blowing direction. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an air purifier for purifying air by removing dust, odor and the like contained in indoor air.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an air purifier including a charging unit 10 'for charging dust, a dust collection unit for collecting the charged dust, and a blowing unit for sending air to the charging unit 10' and the dust collection unit has been known. Have been. The charging unit 10 'of the air purifier includes a discharge unit 18 and a counter electrode unit 22', and discharges dust contained in air sent from the blower unit by discharge from the discharge unit 18 to the counter electrode unit 22 '. After being charged, the dust is collected electrically by the Coulomb force in the dust collecting section, thereby removing dust and odor contained in the indoor air to purify the air.
[0003]
As shown in FIGS. 11 to 13, the charging section 10 ′ includes a linear discharging section 18 and a plate-shaped counter electrode section 22 ′ arranged in parallel to the blowing direction A so as not to hinder the air blowing. Often do. In the figure, reference numeral 15 'denotes an electrode frame for supporting the discharge section 18 and the counter electrode section 22'.
[0004]
However, since the counter electrode portions 22 'in FIGS. 11 to 13 are separately provided, the rigidity thereof is low. There is a problem that it is difficult to handle and that the counter electrode portions 22 'cannot be positioned and held.
[0005]
Further, as shown in FIG. 14, a U-shaped counter electrode portion 22 'facing the blowing direction A is formed by pressing one conductive steel sheet, and an air passage hole 26' is formed in the counter electrode portion 22 '. An air purifier having the formed charging unit 10 'is also known. In this case, although the rigidity of the discharge portion 18 is certainly increased, the discharge from the discharge portion 18 is not performed in the direction B perpendicular to the blowing direction because the counter electrode portion 22 'is made of one conductive steel sheet. It may be performed in a direction parallel to the direction A, whereby the dust contained in the air sent by the blower is sent to the dust collector in a state where it does not cross the discharge from the discharge unit 18 and is not charged. As a result, the dust collecting ability is reduced. In the air purifier having the charging unit 10 'shown in FIG. 14, the distance L1 from the discharge unit 18 to the counter electrode unit 22' in a direction parallel to the air blowing direction a is perpendicular to the air blowing direction as shown in FIG. A method is also conceivable in which the counter electrode part 22 'is provided so as to be longer than the distance L2 from the discharge part 18 to the counter electrode part 22' in (b) (for example, L1> 1.5 × L2), thereby increasing the dust collecting ability. However, in this case, the distance L1 from the discharge portion 18 to the counter electrode portion 22 'in the direction parallel to the air blowing direction A becomes considerably long, so that the counter electrode portion 22', and hence the charging portion 10 'and the air purifier are required. A new problem of increasing the size arises.
[0006]
Further, since the air passage hole 26 'of the counter electrode portion 22' in FIGS. 14 and 15 is formed large, a finger enters the air passage hole 26 ', and the dust adhering to the counter electrode portion 22' is washed. At the time or when carrying the counter electrode part 22 ', there is a risk of cutting hands, making maintenance difficult. The corner portion of the counter electrode portion 22 'is angular, and an air passage hole 26' is provided in the angular corner portion to improve ventilation. There was a danger of cutting hands due to the sharp corners.
[0007]
[Problems to be solved by the invention]
The present invention has been made in view of the above points, and its object is to maintain a high dust collecting ability, increase the rigidity of the counter electrode, maintain the installation position of the counter electrode, and reduce the size. It is an object of the present invention to provide an air purifier that can be realized, can improve ventilation, and can easily perform maintenance.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, an air purifier according to the present invention includes a discharging unit 18 and a counter electrode unit 22, a charging unit 10 for charging dust by discharging from the discharging unit 18 to the counter electrode unit 22, In the air purifier 1 provided with a dust collecting section 11 for collecting air and a blowing section 8 for sending air to the charging section 10 and the dust collecting section 11, the counter electrode section 22 is moved in a direction perpendicular to the blowing direction. And a connecting plate 25 connecting the two conductive plates 24, and an air passage hole 26 is provided at a position overlapping the discharging portion 18 of the connecting plate 25 in the blowing direction a. It is characterized by comprising.
[0009]
By providing the connecting plate 25 that connects the two conductive plates 24 as described above, the rigidity of the counter electrode portion 22 can be increased and the installation position of the two conductive plates 24 can be maintained. By providing the air passage hole 26 at a position overlapping with the discharge portion 18 of the discharge plate 25, the area of a portion of the connecting plate 25 located in a direction parallel to the blowing direction A of the discharge portion 18 is reduced, and the blowing direction from the discharge portion 18 is reduced. The discharge in the direction parallel to the direction a is reduced, and the discharge in the direction b perpendicular to the blowing direction can be stably performed. Further, as described above, since the area of the connecting plate 25 that overlaps the discharge portion 18 in the blowing direction a is small, the distance from the discharge portion 18 to the connecting plate 25 can be reduced.
[0010]
The air purifier according to claim 2 includes a discharging unit 18 and a counter electrode unit 22, and a charging unit 10 for charging dust by discharging from the discharging unit 18 to the counter electrode unit 22, and for collecting the charged dust. In the air purifier 1 including the dust collecting unit 11 and the blowing unit 8 that sends air to the charging unit 10 and the dust collecting unit 11, the discharge unit 18 is formed in a linear shape, and the counter electrode unit 22 is It is composed of conductive plates 24, 24 located on both sides of the discharge portion 18 in a direction perpendicular to the blowing direction, and a connecting plate 25 connecting the conductive plates 24, 24, and the connecting plate 25 has a circular air passage hole. A plurality of air passages 26 are provided, and the air passage holes 26 are arranged such that a tangent of the air passage holes 26 overlaps the discharge unit 18 in the blowing direction A.
[0011]
By providing the connecting plate 25 for connecting the conductive plates 24 as described above, the rigidity of the counter electrode portion 22 can be increased and the installation position of both conductive plates 24 can be maintained, and the counter electrode portion 22 has a round shape. By providing a plurality of air passage holes 26, the rigidity of the counter electrode portion 22 is further increased while maintaining ventilation. In addition, by arranging the air passage holes 26 of the connection plate 25 such that the tangent of the air passage holes 26 overlaps the discharge portions 18 in the air blowing direction a, the air passage holes 26 of the connection plate 25 are parallel to the air blowing direction a of the discharge portions 18. Since the area of the portion located in the area B is small, the discharge from the discharge part 18 in the direction parallel to the air blowing direction A is reduced, and the discharge in the direction B perpendicular to the air blowing direction can be stably performed. Dust collection capacity is obtained. In addition, since the area of a portion of the connecting plate 25 located in a direction parallel to the air blowing direction A of the discharge unit 18 is reduced, the distance from the discharging unit 18 to the connecting plate 25 can be reduced. , And furthermore, the charging unit 10 and the air purifier 1 can be reduced in size.
[0012]
An air purifier according to a third aspect of the present invention is the air purifier according to the first or second aspect, wherein the arcuate surface convex at the corner 37 between the conductive plate 24 and the connecting plate 25 on the opposite side to the discharge unit 18. 36 is formed, and a plurality of air passage holes 26 having a width smaller than the width of the fingertip are provided on the arc surface 36 and the connecting plate 25.
[0013]
In this way, by providing a plurality of air passage holes 26 having a width smaller than the width of the fingertip, it is possible to prevent a finger from entering the air passage hole 26 and injuring the hand while maintaining high ventilation, Further, by providing a plurality of air passage holes 26 also on the arc surface 36, the ventilation can be further improved, and it is difficult to cut a hand at the corner 37 exposed from the air passage hole 26.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.
[0015]
The air purifier 1 in the present embodiment has a housing 2 having an open front side as shown in FIG. 3, and a cover 3 is detachably attached so as to cover the front opening of the housing 2. The cover 3 is opened to communicate with the inside of the housing 2 through the opening of the housing 2, and a grill 4 is detachably provided so as to cover the opening of the cover 3. Suction ports 5 are formed in the grill 4, a gap between the grill 4 and the cover 3, and a lower portion of the front surface of the cover 3, and the inside and the outside of the housing 2 communicate with each other through each suction port 5. I have. A discharge port 6 is provided at the rear of the top plate of the housing 2.
[0016]
The inside of the housing 2 is roughly divided into a filter block 7 on the front side and a blower unit 8 on the rear side, and the filter block 7 is housed in a front part inside the housing 2 so that the front surface is covered by the cover 3. The filter block 7 is detachably attached inside the opening of the housing 2, and the filter block 7 can be taken out by removing the cover 3 from the housing 2.
[0017]
The blower 8 is provided with the motor 12 shown in FIG. 3 and a fan housing 13, and a sirocco fan 14 is arranged in the fan housing 13. When the sirocco fan 14 rotates, air outside the housing 2 is sucked into the housing 2 from each suction port 5 provided in the air cleaner 1, and the sucked air enters the filter block 7 from the front side, and the filter block After being discharged from the rear surface side of the housing 7, it is discharged from the discharge port 6 to the upper side of the housing 2 through the sirocco fan 14.
[0018]
Hereinafter, the filter block 7 will be described in detail. The filter block 7 includes, in order from the front, a pre-filter 9, a charging unit 10 for charging the dust, and a dust collection unit 11 for collecting the charged dust. The pre-filter 9, the charging unit 10, and the dust collection unit 11 Are detachably attached to the housing 2 respectively.
[0019]
The charging unit 10 has dust charging means for charging dust in the air. As shown in FIGS. 1, 2, and 4, a rectangular electrode frame 15 opened in the front-rear direction of the housing 2, It comprises a discharge electrode 16 disposed on the front side of the frame 15 and a counter electrode 17 disposed on the rear side of the electrode frame 15.
[0020]
The discharge electrode 16 is composed of a plurality of discharge wires 39 having conductivity and a linear shape. In this embodiment, a thin tungsten wire or a piano wire is used as the discharge wire 39. The center of the discharge wire 39 is hooked on the upper end of the electrode frame 15 as shown in FIGS. 1 and 2, and both ends are provided on the lower end of the electrode frame 15 under tension by the coil spring 19. The discharge portion 18 is attached to the electrode frame 15 by being hooked on the metallic discharge portion support member 20, thereby forming the discharge portion 18 on two vertically-shaped linear portions of each of the U-shaped discharge wires 39. That is, the discharge portion 18 is held in a direction b perpendicular to the blowing direction. In the drawing, reference numeral 21 denotes a rubber or synthetic resin tube having elasticity and insulating properties, which is provided on a connection portion of the central portion of each discharge wire 39 with the electrode frame 15. It absorbs transmitted vibration.
[0021]
The counter electrode 17 disposed behind the discharge electrode 16 is formed by pressing a single conductive steel punching net as shown in FIG. 5 and is detachably attached to the electrode frame 15. Have been. The counter electrode 19 includes a plurality of counter electrodes 22 having a substantially U-shaped horizontal cross section and a plurality of counter electrodes 22 arranged in the left-right direction (the width direction of the electrode frame 15). They are integrally formed by being connected at the connection plate 23 (see FIG. 4). That is, as shown in FIG. 6, the counter electrode 19 is formed in a square wave shape in which a plurality of counter electrode portions 22 are connected by the connection plate portion 23. As shown in FIG. 6, the counter electrode portion 22 is formed along the front-rear direction and on both sides of the discharge section 18 in the left-right direction. It is composed of a conductive plate 24 for connecting the rear ends of the 24 and an integral connecting plate 25. That is, as shown in FIG. 6, the conductive plate 24 is formed in parallel with the blowing direction a and is located on both sides of the discharge portion 16 in the direction b perpendicular to the blowing direction, and the connecting plate 25 is positioned with respect to the blowing direction a. It is formed vertically and located downstream of the discharge unit 18. The counter electrode part 22 is arranged such that the discharge part 18 is located at the center in the left-right direction between the two conductive plates 24, and that the discharge part 18 is located on a line connecting the ends of the two conductive plates 24 on the suction port 5 side. It is arranged in. More specifically, the distance L1 from the discharge portion 18 to the counter electrode portion 22 in a direction parallel to the air blowing direction A is longer than the distance L2 from the discharge portion 18 to the counter electrode portion 22 in a direction perpendicular to the air blowing direction. ing. That is, the endmost distance from the discharge part 18 to the connecting plate 25 is set to be longer than the endmost distance from the discharge part 18 to the conductive plate 24. Both corners 37, 37 of the conductive plate 24 and the connecting plate 25 are bent so as to be convex on the opposite side to the discharge part 18, and both corners 37, 37 are convex on the opposite side to the discharge part 18. An arc surface 36 is formed. As shown in FIGS. 1, 2 and 5, the counter electrode 17 formed as described above has a circular (in particular, circular in this embodiment) air passage hole 26 formed on substantially the entire surface of the counter electrode 17. The air flowing from the front of the charging unit 10 is sent to the dust collection unit 11 through the air passage hole 26. 1 and 2, only one of the plurality of counter electrodes 18 of the counter electrode 17 is illustrated for easy understanding.
[0022]
By configuring the connecting plate 25 that connects the conductive plate 24 to the counter electrode portion 22 as described above, the rigidity of the counter electrode portion 22 can be increased. Further, since the air passage holes 26 are provided in the entire surface of the counter electrode 17, particularly in the connection plate 25 of the counter electrode portion 22, the connection plate 25 does not hinder the air flow, so that it is possible to prevent a decrease in the amount of air flow. Since the hole 26 is formed in a circular shape, there is no danger of the hand being damaged by the air passage hole 26. Further, the air passage holes 26 are arranged so that the distance between the centers of the adjacent air passage holes 26 is the same, whereby the rigidity of the counter electrode portion 22 is further enhanced and the ventilation is improved.
[0023]
A high-voltage contact 27 (see FIG. 2) electrically connected to a high-voltage generating circuit (not shown) is provided at a lower portion on one side of the filter block 7. The high-voltage contact 27 and a discharge unit support member provided on the charging unit 10 are provided. By contacting the discharge electrode 17 with a constant contact pressure, the discharge electrode 17 and the high voltage generation circuit are electrically connected, and a high voltage of, for example, +6.5 kV is applied to the discharge electrode 17. Further, a GND contact 28 electrically connected to the ground side of the high voltage generating circuit is provided at a lower portion of one side of the filter block 7 opposite to the high voltage contact 27. The GND contact 28 and the above-described counter electrode 17 are connected to each other. Are connected via a GND spring (not shown). That is, the GND spring contacts the opposing electrode 17 while maintaining a constant contact pressure, and the GND contact 28 contacts the GND spring with a constant contact pressure, whereby the opposing electrode 17 is electrically connected to the GND contact 28. It will be. As described above, when the charging unit 10 is housed, the discharge electrode 16 is electrically connected to the high-voltage contact 27, and the counter electrode 17 is electrically connected to the GND contact 28. A discharge is generated in the conductive plate 24 of the counter electrode portion 22 of the counter electrode 17 from the direction 18 in the direction perpendicular to the blowing direction, and the charging section 10 positively charges the dust contained in the air sent by the blowing section 8.
[0024]
As shown in FIG. 7, the dust collecting unit 11 is disposed on the most upstream side of the dust collecting unit 11 and collects dust contained in the air sucked into the air cleaner 1. And a deodorizing filter unit 30 located downstream of the dust collecting filter unit 29 and deodorizing the air sucked into the air purifier 1.
[0025]
The deodorizing filter section 30 is made of a filter medium mixed with ultra-fine fibers, and the deodorizing filter section 30 has a fine deodorizing agent 33 made into fine particles adhered by a binder, and the odor collected by the fine deodorizing agent 33 is used. Has been deodorized.
[0026]
The dust collecting filter unit 29 includes a honeycomb core 31 and a deodorizing agent 32 such as activated carbon filled in the honeycomb core 31. By filling the honeycomb core 31 with the deodorizing agent 32, the dispersion, movement and bias of the deodorizing agent 32 are increased. Has been prevented.
[0027]
An insole sheet 34 through which air passes is provided between the deodorizing filter unit 30 and the dust collecting filter unit 29, and separates the deodorizing filter unit 30 from the dust collecting filter unit 29.
[0028]
On the downstream side of the honeycomb core 31, a covering material 35 made of non-woven fabric is heat-welded, that is, the covering material 35 is disposed at the most downstream portion of the dust collecting portion 11. The ring member 35 prevents the deodorant 32 from leaking, dispersing, moving, and biasing.
[0029]
According to the configuration of the filter block 7, the air sent from the suction port 5 first collects the large dust contained in the air by the pre-filter 7, and then the small dust is positively charged by the charging unit 10. Then, the positively charged dust is attracted to and collected by the dust collecting filter unit 29 of the polarized and charged dust collecting unit 11 by Coulomb force. The air from which the dust is collected by the dust collecting filter unit 29 is deodorized by the deodorizing filter unit 30 located downstream thereof, and the purified and deodorized air is discharged to the outside of the housing 2.
[0030]
By the way, when the connecting plate 25 for connecting the conductive plate 24 to the counter electrode portion 22 of the charging unit 10 as described above is formed, the discharge from the discharge unit 18 is not performed in the direction B perpendicular to the blowing direction, but in the blowing direction I. This causes the dust sent to the charging unit 10 to be sent to the dust collection unit 11 in a state where the dust is not charged without crossing the discharge from the discharge unit 18 and the dust collection capability Is reduced.
[0031]
Therefore, in the present embodiment, as shown in FIG. 8, the air passage hole 26 is provided at a position overlapping the discharge part 18 in the air blowing direction A of the connecting plate 25 of the counter electrode part 22. More specifically, among the plurality of air passage holes 26 provided on the entire surface of the counter electrode 17, the plurality of air passage holes 26 provided vertically in the center in the width direction of the connection plate 25 discharge in the air blowing direction A of the connection plate 25. The counter electrode portion 22 was disposed so as to be overlapped with the portion 18, and the counter electrode portion was disposed so that the discharge portion 18 passed through the center of the air passage hole 26 when viewed from the blowing direction a.
[0032]
With such a configuration, the area of the portion of the connecting plate 25 located in the direction parallel to the blowing direction A of the discharge portion 18 is reduced, and the discharge from the discharging portion 18 in the direction parallel to the blowing direction A is reduced. As a result, it is possible to stably discharge in the direction b perpendicular to the blowing direction, thereby obtaining a high dust collecting ability. Further, since the area of the connecting plate 25 that overlaps with the discharge portion 18 in the blowing direction A is small, the distance from the discharge portion 18 to the connecting plate 25 can be reduced (as a result of the experiment, as shown in FIG. If it is set to 5 mm, it is possible to reduce L1 to 14.5), thereby making it possible to reduce the size of the counter electrode portion 22 and, consequently, the size of the charging portion 10 and the air purifier 1.
[0033]
More specifically, as shown in FIG. 5, when viewed from a direction perpendicular to the air blowing direction A, a position 38 (a position located at the endmost distance from the discharge portion 18 of the electric plate 24) overlapping the discharge portion 18 of the counter electrode portion 18 is provided. The air passage hole 26 is not provided, and the air passage hole 26 is provided at a position downstream from a position 38 overlapping the discharge portion 18 of the counter electrode portion 18 when viewed from a direction perpendicular to the blowing direction a. Thus, the discharge in the direction B perpendicular to the blowing direction can be performed more stably.
[0034]
Although the example in which the discharge unit 18 is formed in a linear shape has been described above, the shape of the discharge unit 18 is not limited in the present embodiment. Further, in the above, the example in which the connecting plate 25 is arranged on the downstream side of the discharge unit 18 is shown, but it may be provided on the upstream side.
[0035]
Further, in the above description, an example is shown in which the conductive plate 24 is disposed only on both sides in the left-right direction perpendicular to the blowing direction A of the discharge unit 18, but the present invention is not limited to this, and both sides in the width direction perpendicular to the blowing direction A And conductive plates 24 may be provided on both sides in the up-down direction, and may be disposed so as to surround the discharge portion by the conductive plates 24. More specifically, the conductive plates 24 may be provided in a tubular shape when viewed from the blowing direction a. And In this case, the discharge in the direction B perpendicular to the blowing direction is further increased, and the dust collecting performance can be improved.
[0036]
Also, as shown in FIGS. 5 and 9, an arc surface 36 which is convex on the opposite side to the discharge part 18 is formed at a corner 37 between the conductive plate 24 and the connection plate 25. It is also preferable to provide a plurality of air passage holes 26 having a width smaller than the width of the fingertip. Here, the length R1 of the air passage hole 26 provided in the arc surface 36 in the direction along the arc surface is set to be shorter than the arc length R2 of the arc surface 36 as shown in FIG.
[0037]
In this way, by providing a plurality of air passage holes 26 having a width smaller than the width of the fingertip, high ventilation can be maintained, and when the counter electrode portion 22 'is carried or attached to the counter electrode portion 22'. It is possible to prevent a finger from entering the air passage hole 26 and injure the hand when cleaning dust or the like, thereby improving maintainability. Further, in this case, since a plurality of air passage holes 26 are also provided on the arc surface 36, the ventilation can be further enhanced, and the corner exposed from the air passage hole 26 despite the increased ventilation. It is less likely that the hand will be cut off by the part 37.
[0038]
Next, an embodiment different from the above will be described. Note that the same components as those of the above-described embodiment are denoted by the same reference numerals, and description of overlapping descriptions will be omitted.
[0039]
In this embodiment, as shown in FIGS. 2 and 10, the air passage holes 26 of the connecting plate 25 are arranged such that the tangent line (parallel to the vertical direction) of the air passage holes 26 overlaps the discharge unit 18 in the blowing direction A. ing. With such a configuration, the area of the portion of the connecting plate 25 located in the direction parallel to the blowing direction A of the discharge portion 18 is reduced, so that the discharge from the discharging portion 18 in the direction parallel to the blowing direction A is small. As a result, it is possible to stably discharge the battery in a direction perpendicular to the blowing direction, thereby obtaining a high dust collecting ability. Also in this case, since the area of the portion of the connecting plate 25 located in the direction parallel to the blowing direction A of the discharge portion 18 is reduced, the distance from the discharging portion 18 to the connecting plate 25 can be reduced. Thus, the counter electrode portion 22 can be reduced in size, and further the charging portion 10 and the air cleaner 1 can be reduced in size.
[0040]
【The invention's effect】
As described above, in the invention according to claim 1 of the present invention, by providing the connecting plate for connecting the conductive plates, the rigidity of the counter electrode portion is increased, so that the counter electrode portion is not deformed during carrying or washing, and By providing an air passage hole at a position overlapping the discharge part of the connecting plate in the air blowing direction, it is possible to prevent the connecting plate from obstructing the air blowing, and in addition, a direction parallel to the air blowing direction of the discharging part of the connecting plate. , The area of the portion located in the area becomes small, and the discharge in the direction perpendicular to the air blowing direction can be stably performed, whereby a high dust collecting ability can be obtained. Also, since the area of the connecting plate that overlaps with the discharge portion in the air blowing direction is small, the distance from the discharge portion to the connecting plate can be reduced, thereby reducing the size of the counter electrode portion and, consequently, the charging portion and the air purifier. It can also be downsized.
[0041]
According to the second aspect of the present invention, by providing a connecting plate for connecting the conductive plates, not only the rigidity of the counter electrode portion is increased, but also a plurality of round air passage holes are provided in the counter electrode portion. This further increases the rigidity of the counter electrode, thereby preventing the counter electrode from being deformed when being washed or carried. Further, since the air passage hole has a round shape, there is no danger of cutting off the hand through the air passage hole when carrying or cleaning, and the maintainability is improved. Furthermore, by arranging the air passage hole of the connecting plate so that the tangent line of the air passage hole overlaps the discharge part in the blowing direction, the area of the part located in the direction parallel to the blowing direction of the discharging part of the connecting plate is reduced. Therefore, the discharge in the direction parallel to the air blowing direction from the discharge unit is reduced, and the discharge in the direction perpendicular to the air blowing direction can be stably performed, thereby obtaining a high dust collecting ability. In addition, since the area of a portion of the connecting plate located in a direction parallel to the air blowing direction of the discharging portion is reduced, the distance from the discharging portion to the connecting plate can be reduced, thereby reducing the size and length of the counter electrode portion. Can reduce the size of the charging unit and the air purifier.
[0042]
According to the third aspect of the invention, in addition to the effects of the first or second aspect of the invention, high ventilation is maintained by providing a plurality of air passage holes having a width smaller than the width of the fingertip. In addition, it is possible to prevent a finger from entering the air passage hole and damaging the hand. In addition, by providing a plurality of air passage holes also on the arc surface, it is possible to further enhance ventilation, and it is difficult to cut a hand at a corner portion exposed from the air passage hole, so that maintenance of the counter electrode portion is facilitated by the above. Become.
[Brief description of the drawings]
FIG. 1 is a front view showing a charging unit of an air purifier showing an example of an embodiment of the present invention.
FIG. 2 is an explanatory front view showing the air purifier in which the mounting position of the air passage hole is changed.
FIG. 3 is a side sectional view of the air purifier of FIG. 1;
FIG. 4 is a horizontal sectional view showing a charging unit according to the first embodiment;
FIG. 5 is an enlarged perspective view showing the counter electrode of the above.
FIG. 6 is a cross-sectional view of a main part of the charging unit according to the first embodiment.
FIG. 7 is an explanatory diagram showing a dust collecting unit according to the embodiment.
FIG. 8 is an explanatory front view illustrating an arrangement of air passage holes according to the embodiment.
FIG. 9 is a cross-sectional view showing a corner of a counter electrode of the above.
FIG. 10 is an explanatory front view illustrating an arrangement of air passage holes in FIG. 2;
FIG. 11 shows an example of a conventional air purifier, where (a) is a front view of a charging unit and (b) is a side view.
FIG. 12 shows another example of the conventional air purifier, and is a perspective view of a charging unit.
FIG. 13 is an explanatory diagram of the above.
FIG. 14 shows still another example of the conventional air purifier, and is a perspective view of a charging unit.
FIG. 15 is an explanatory diagram of the above.
[Explanation of symbols]
B Air blowing direction B Direction perpendicular to the air blowing direction 1 Air cleaner 10 Charging unit 11 Dust collection unit 18 Discharge unit 22 Counter electrode unit 24 Conductive plate 25 Connecting plate 26 Air passage hole 36 Circular surface 37 Corner part

Claims (3)

A charging unit that includes a discharging unit and a counter electrode unit and charges the dust by discharging from the discharging unit to the counter electrode unit; a dust collecting unit for collecting the charged dust; and sending air to the charging unit and the dust collecting unit. In the air purifier provided with a blowing unit, the counter electrode portion, a conductive plate located on both sides of the discharge unit in a direction perpendicular to the blowing direction, and a connecting plate connecting both conductive plates, in the blowing direction An air purifier comprising an air passage hole provided at a position overlapping a discharge portion of a connecting plate. A charging unit that includes a discharging unit and a counter electrode unit and charges the dust by discharging from the discharging unit to the counter electrode unit; a dust collecting unit for collecting the charged dust; and sending air to the charging unit and the dust collecting unit. In the air purifier provided with a blowing unit, the discharge unit is formed in a linear shape, and the counter electrode unit is connected to a conductive plate located on both sides of the discharge unit in a direction perpendicular to the blowing direction, and both conductive plates are connected. A plurality of round air passage holes are provided in the connection plate, and the air passage holes are arranged such that a tangent of the air passage hole overlaps the discharge portion in the blowing direction. air purifier. An arc surface that is convex on the opposite side to the discharge portion is formed at a corner between the conductive plate and the connection plate, and a plurality of air passage holes having a width smaller than the width of the fingertip are provided on the arc surface and the connection plate. The air purifier according to claim 1 or 2, wherein:

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