JP3011099B2 - Ionization section of air purifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ionizer of an air purifier used for an air purifier for removing dust and the like in the air and ionizing the dust.

[0002]

2. Description of the Related Art Conventionally, there is an air purifier of an electric dust collection type. In this type of air purifier, dust in a ventilation flow is ionized by being subjected to an ion shower in an ionization section, and the ionized dust is adsorbed to the dust collection section. The above-mentioned ionization part has a plurality of long ionization lines, and a pair of opposing electrode plates facing each other with these ionization lines interposed therebetween.

[0003] By the way, since the ionization wire is very thin and both ends are supported in a state where a predetermined tension is applied by a tension coil spring, the ionization wire is located at a central position between the opposed electrode plates. The spring force to be maintained is working. When such an ionization line is slightly vibrated and once deviates from the center between the opposing electrode plates, the opposing electrode plate on the side closer to the ionization line due to this deviation has a stronger ionization line than the other opposing electrode plate. Is electrically sucked. In other words, once the ionization line oscillates, it will alternately receive a strong attraction to each opposing electrode plate,
Vibration is promoted and it is difficult to stop, and the vibration tends to be maintained for a long time. The noise due to such vibration is touching to the user, and the user who hears the vibration sound may misunderstand that an abnormality has occurred.

Therefore, conventionally, a plurality of ionization lines are stretched, and a support for crossing each ionization line is attached to a frame, and the support supports a middle part of each ionization line to prevent vibration. An electric precipitator has been provided (see Japanese Patent Application Laid-Open No. 2-164466). However, since the support is provided separately from the frame and is fixed to the frame, there is a problem in that the manufacturing cost increases due to an increase in component cost and assembly cost. Also,
If the mounting of the support is uncertain, there is a risk that the support itself will rattle, and in that case, the effect of preventing vibration cannot be expected much.

Further, the support has a portion close to the ionization line in order to prevent vibration of each ionization line, and the support traverses each opposed electrode plate arranged in parallel to the ionization line. Therefore, the creeping distance from the ionization line to the counter electrode plate following the creeping surface of the support tends to be short. For this reason, there was a possibility that surface discharge would occur.

Accordingly, a first object of the present invention is to provide an ionizing section of an air purifier which is low in manufacturing cost and reliably prevents vibration of an ionizing line. A second object of the present invention is to provide an ionization section of an air purifier that can suppress creeping discharge while preventing vibration of ionization lines.

[0007]

According to a first aspect of the present invention, there is provided an air purifier comprising: a plurality of ionizing lines; and a pair of opposed electrode plates opposed to each other with the ionizing lines interposed therebetween. In the ionizer of the air cleaner, which ionizes dust in the ventilation flow, a resin frame holding the ionization line and the counter electrode plate is provided, and the resin frame is located on the upstream side in the ventilation flow direction of each ionization line. And has a horizontal frame for ionization line protection extending in the horizontal direction in parallel with the ionization line, and a rib for ionization line vibration prevention surrounding a part of the periphery of the ionization line is formed integrally with the horizontal frame. It is characterized by having.

In the above construction, the ribs for preventing the ionization line vibration are formed integrally with the ionization line protection horizontal frame of the resin frame, so that the ribs are provided separately from the resin frame and are attached to the horizontal frame. In comparison, the manufacturing cost can be reduced. In addition, there is no problem concerning the mounting between the rib and the horizontal frame, and the rib reliably prevents vibration. Claim 2
The ionization section of the air purifier according to the above, wherein the resin frame has a plurality of vertical frames crossing each of the horizontal frames and across the opposing electrode plate, the ribs formed in the horizontal frames, the vertical frame It is characterized by being arranged at a position avoiding the intersection with the horizontal frame.

In the above configuration, since the vertical frame crosses the opposite electrode plate, it is close to the opposite electrode plate. If the rib is provided at the intersection of the vertical frame and the horizontal frame, the creepage distance between the rib and the opposing electrode plate becomes short, and there is a possibility that creepage discharge may occur. On the other hand, in the present invention, since the rib is arranged at a position avoiding the intersection, a predetermined creepage distance can be secured, and the occurrence of creepage discharge can be suppressed.

According to a third aspect of the present invention, in the ionizer of the air purifier, the rib formed in the horizontal frame is disposed at a central position between adjacent vertical frames. . In the above configuration, from the vertical frame adjacent to the opposing electrode plate,
Since the ribs are arranged at the most distant positions, the longest creepage distance can be ensured, and the occurrence of creeping discharge can be reliably prevented.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an exploded perspective view of an air purifier including an ionization unit according to an embodiment of the present invention. Referring to FIG. A grill 3 is arranged, and air is sucked into the air cleaner body 2 through the suction grill 3.

A recess 2 is provided on the front surface 2a of the air purifier body 2.
In the recess 2b, a pre-filter 4 for removing relatively large dirt and dust, an ionizing section 5 for discharging to charge dirt particles, and a dust collecting section The filter case 6 accommodating the roll filter 6a is accommodated therein. Recess 2b
An opening is formed at a substantially central portion of the opening, from which the blower fan 7 attached to the base panel 13 and circulating the room air to the roll filter 6a is exposed. The room air sucked from the suction grill 3 is purified through the pre-filter 4, the ionization unit 5, the roll filter 6a and the blower fan 7, and then purified.
Is blown out from a blowout louver 8 provided at the upper part of the airbag. M is a fan motor for driving the sending fan 7 to rotate. P is a power plug. In the present embodiment, the roll filter 6a is used as the dust collecting unit, but instead, an electric dust collecting unit in which the dust collecting electrode plate and the ground electrode plate are opposed to each other can be used.

The front surface 2a of the air purifier main body 2 is constituted by a front panel 9, in which the recess 2b is formed. The lower part of the front panel 9 constitutes an operation display panel 10 provided with various operation switches and various display units. The air purifier main body 2 is configured by combining the front panel 9 with a base panel 13.

At one end of the operation display panel 10, an air supply port 11 is opened. Through the air supply port 11, room air is supplied to a dust detection sensor 12 as a dirt detection sensor. I have. The air passing through the dust detection sensor 12 is supplied to the blower fan 7 while the blower fan 7 is operating.
Is discharged from the blow-out louver 8 via a first path R1 passing through the air passage, and while the blower fan 7 is stopped, air is purified via a second path R2 passing through a P-plate housing chamber (not shown). Exhaust port 14 provided at the top of the machine body 2
From the aircraft.

FIG. 2 is a front view of the ionization section 5,
FIG. 3 is a front view of the ionization unit 5 with the counter electrode plate removed, FIG. 4 is a rear view of the ionization unit 5, and FIG.
5 is a cross-sectional view taken along the line V-V in FIG. 4, and FIG. 6 is a partially cutaway perspective view of a main part of the ionization unit 5 as viewed from the back side. The ionization unit 5 will be described with reference to these drawings. First, with reference to FIG. 2 and FIG.
A grid-like resin frame 51 integrally formed as a whole, a plurality of ionizing wires 52 attached to the resin frame 51 via a metal plate (not shown) fixed to the resin frame 51 and a tension coil spring S; And an opposing electrode plate 53 fixed to the resin frame 51.

Referring to FIG. 2, the opposite electrode plate 53 is
It has a plurality of elongated openings 53c formed in parallel with a flat plate, and opposing electrode plates 53a, 53 forming a pair at both edges of the openings 53c.
b is formed by bending. Between the adjacent pairs, the adjacent opposing electrode plates 53a, 53b are connected by a web 54 to form a U-shaped section 55 as shown in FIGS. Referring to FIG. 2, counter electrode plate 53 is attached to resin frame 51 by sandwiching flat plate portions 53 d at both ends between hooks 60 of resin frame 51.

Referring to FIG. 2, FIG. 4 and FIG.
1 is provided inside each of the opposed electrode plates 53 inside the U-shaped section 55 described above.
a, 53b, and a pair of first horizontal frames 56, which are inserted along the respective a and 53b, and opposing electrode plates 53a, 53b to be a pair.
A second horizontal frame 57 extending in parallel with the ionization line 52 on the upstream side in the ventilation flow K direction of each ionization line 52 between the ionization lines 52, and traversing these horizontal frames 56, 57. And a plurality of vertical frames 58.

Referring to FIG. 5 and FIG.
Are a flat plate portion 58a that orthogonally connects the pair of first horizontal frames 56, a second horizontal frame 57, and a flat plate portion 5 adjacent thereto.
8a and a pair of crank-shaped portions 58b, 58c
And A pair of crank-shaped portions 58b, 58c
Have mutually symmetric shapes. The second horizontal frame 57
Is disposed in front of the ionization line 52 (upstream in the direction of the ventilation flow K) to prevent foreign matter or the like from contacting the ionization line 52. Are formed so as not to increase as much as possible.

Referring to FIGS. 4, 5 and 6, this second horizontal frame 57 has a rib 59 having a U-shaped cross section which surrounds ionization line 52 and prevents vibration of ionization line 52. Are integrally formed. The rib 59 may be disposed at a position spaced apart from the intersection C between the second horizontal frame 57 and the vertical frame 58 according to the creepage distance to the opposing electrode plates 53a and 53b (see FIG. In FIG. 6, the path E at the time of creeping discharge is indicated by a dashed line), and is most preferably arranged at the center position between the adjacent vertical frames 58, 58 as in the present embodiment.

This is for the following reason. That is, the vertical frame 5
In FIG. 8, the opposing electrode plates 53a, 53b are longitudinally cut in a state of being close to the opposing electrode plates 53a, 53b.
c becomes very short, and there is a possibility that a creeping discharge may occur. Therefore, in order to prevent creeping discharge, it is preferable that the ribs 59 be arranged as far as possible from the vertical frame 58.

In this embodiment, the ribs 59 for preventing the ionization line vibration are formed integrally with the second horizontal frame 57 for protecting the ionization line, so that the ribs 59 are provided separately from the resin frame 51. The manufacturing cost can be reduced as compared with the case where this is attached to the resin frame 51. Also, there is no problem such as looseness of the mounting of the rib 59, and the prevention of vibration by the rib 59 is reliable.

Moreover, the ribs 59 are connected to the opposite electrode plates 53a, 5a.
Since the distance from the vertical frame 58 close to 3b is increased, a predetermined creeping distance can be secured between the rib and the opposing electrode plate, and the occurrence of creeping discharge can be suppressed. Note that the present invention is not limited to the above-described embodiment. For example, in the above-described embodiment, the rib 59 is arranged at the center position between the adjacent vertical frames 58, 58, but the rib 59 is not limited to this. As long as a predetermined creepage distance can be ensured between the counter electrode plates 53a and 53b, they may be arranged so as to be biased toward one of the vertical frames 58. That is, it is sufficient to secure a predetermined creepage distance between the rib 59 and the opposing electrode plates 53a, 53b. Therefore, it is preferable to arrange the rib 59 at a more effective position for preventing vibration, which is the main role of the rib 59.

Further, a plurality of ribs 59 may be arranged. As the shape of the rib 59, a U-shaped shape, an Ω-shaped shape, and other shapes can be adopted.

[0024]

According to the first aspect of the present invention, the ribs for preventing ionization line vibration are formed integrally with the ionization line protection horizontal frame of the resin frame. Therefore, the ribs are provided separately from the resin frame. The manufacturing cost can be reduced as compared with the case of mounting on a horizontal frame. In addition, there is no problem concerning the mounting between the rib and the horizontal frame, and the rib reliably prevents vibration.

According to the second aspect of the present invention, the rib is not disposed at the intersection that intersects with the vertical frame that crosses the opposing electrode plate and is close to the opposing electrode plate. Thus, a predetermined creeping distance can be secured, and the occurrence of creeping discharge can be suppressed. In the invention according to claim 3,
Since the ribs are arranged at the positions farthest from the vertical frame adjacent to the opposing electrode plate, the creepage distance can be secured the longest, and the occurrence of creepage discharge can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an air cleaner including an ionization unit of the present invention.

FIG. 2 is a front view of an ionization unit.

FIG. 3 is a front view of the ionization unit with a counter electrode plate removed.

FIG. 4 is a rear view of the ionization unit.

FIG. 5 is a sectional view taken along line VV in FIG. 5;

FIG. 6 is a partially cutaway perspective view of a main part of the ionization unit viewed from the back side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air purifier 5 Ionization part 51 Resin frame 52 Ionization line 53 Counter electrode plate 53a, 53b Counter electrode plate 56 First horizontal frame 57 Second horizontal frame 58 Vertical frame 59 Rib K Air flow C Intersection

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-164466 (JP, A) JP-A-4-61640 (JP, U) JP-A-2-117704 (JP, U) (58) Survey Field (Int. Cl. ⁷ , DB name) B03C 3/00-3/88

Claims (3)

(57) [Claims] A plurality of ionization lines (52) and these ionization lines
(52) and a pair of opposing plates (53
a, 53b), and in the ionization section (5) of the air purifier (1) for ionizing dust in the ventilation flow (K), the ionization line (52) and the counter electrode plates (53a, 53b) are connected. A resin frame (51) held is provided, and the resin frame (51)
It has a horizontal frame (57) for ionization line protection extending in the horizontal direction in parallel with the ionization line (52) on the upstream side of the ventilation flow (K) direction of 2), and is integrated with this horizontal frame (57). An ionizing section of the air purifier (1), wherein a rib (59) for preventing vibration of the ionizing line is formed surrounding a part of the periphery of the ionizing line (52).
(Five) . 2. The resin frame (51) has a plurality of vertical frames (58) crossing each of the horizontal frames (57) and across the opposing electrode plates (53a, 53b). The air according to claim 1, wherein the rib (59) formed on the (57) is disposed at a position avoiding an intersection (C) between the vertical frame (58) and the horizontal frame (57). The ionization section (5) of the purifier (1). 3. The device according to claim 2, wherein the ribs (59) formed on the horizontal frame (57) are arranged at a central position between adjacent vertical frames (58, 58). The ionization section (5) of the air purifier (1).