JP3421592B2 - Discharge electrode for 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 a discharge electrode for an air cleaner that removes cigarette smoke and offensive odors generated in offices, restaurants and the like.

[0002]

2. Description of the Related Art As one of the air cleaners for removing cigarette smoke and offensive odors generated in offices, restaurants, amusement facilities, etc., one using an electric dust collector is disclosed in, for example, Registered Utility Model No. 3033859. In this configuration, the number of discharges per unit area is large, and the purification efficiency is excellent. On the other hand, in the above configuration, as shown in FIG. 6 of the publication, the needle electrode is formed by integrally bending the bent electrode plate members 30 and 31 on the connection support member 19 obtained by bending the stainless plate. A pin member serving as a discharge electrode is fitted into the pin mounting holes ha and hb of the bent electrode plate member by a hammering machine such as an air hammer. In this case, if a large number of needle electrodes are provided, the total weight thereof becomes heavy because the supporting member is made of stainless steel, and the dust collecting unit is detached from the air cleaner main body when cleaning the dust collecting unit. In this case, there is a problem that the work requires labor. Therefore, the applicant, in Japanese Patent Application No. 10-162135, configures the support portion of the needle electrode with aluminum metal,
Although it has been proposed to reduce the weight of the dust collecting unit, in the embodiment, since the lower end of the support body 17 is bent, the bent portion of the dust collecting unit is accidentally dropped. There is a risk of damage such as cracks occurring in the. In addition, the applicant is
In Japanese Patent Application No. 10-162134, a needle electrode having a plurality of discharge electrodes formed to improve the dust collection efficiency was proposed. However, all of them were discharged facing the flat surface of the counter electrode. Since the electrodes are located, the electrode area of the counter electrode is
There is a problem that the ionization area is small.

[0003]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to increase the mechanical strength while reducing the weight of an electrode, and to improve the dust collection efficiency by increasing the ionization area.

[0004]

The present invention comprises a large number of combinations of a needle electrode and a counter electrode arranged in the vicinity of and surrounding the needle electrode, wherein the needle electrode is Has electrodes, stainless steel,
A pair of support bodies each composed of a discharge part made of a conductive metal such as phosphor bronze, iron, or tungsten, and a support part made of aluminum for supporting the discharge part, the support parts sandwiching the discharge part therebetween. And the support is a flat plate. In addition, the present invention provides at least a pair of support fittings having a plurality of engaging grooves for engaging the lower ends of the connecting bodies together with forming a connecting body by connecting a plurality of lower ends of the supporting portions with a connecting portion. The plurality of connecting bodies are arranged side by side by engaging the lower end of the connecting body with the engaging groove of the support fitting, and the needle electrodes are arranged in a matrix. Further, according to the present invention, the support fitting is made of a metal plate having a cross section of approximately
It is formed by bending it into a letter shape, and has insertion holes formed in the portions of the support member that are located in the groove of the support member, and pin members for preventing slippage are inserted into these insertion holes.
And, the present invention comprises a large number of combinations of a needle electrode and a counter electrode arranged close to and surrounding the needle electrode, wherein a plurality of needle electrodes are provided at the air flow upstream end of the needle electrode. A discharge electrode is formed, the counter electrode is formed in a square tube shape, and each discharge electrode is located on a diagonal line of the counter electrode.

First, an embodiment of the present invention will be described with reference to FIG. 1. Reference numeral 1 denotes an air purifier mounted on a ceiling 2 of a house, for example, which is slightly flat and has an air intake hole 4 at a substantially central portion of a bottom surface of a rectangular parallelepiped outer case 3. A mesh-shaped cover 5 is detachably attached to the sheet metal in the intake hole, and the air outlets 6 are opened near the bottom surfaces of the left and right side surfaces, and the air outlet surfaces of these air outlets are opened. Is equipped with wire meshes 7, 7 for grills, and deodorizing filters 8, 8 made of activated carbon fiber or the like are installed inside the wire meshes. Further, the dust collecting unit 9 of the electric dust collecting system is provided above the air intake hole 4 in the central portion of the outer case 3.
And a ventilation path 10 communicating between the intake hole 4 and the outlets 6, 6 is defined between the dust collection unit and the outer case 3, and the dust collection unit 9 in the ventilation path is Cross-flow type blower fans 11, 11 are mounted on both sides, and by operating the blower fans, indoor air is sucked into the dust collecting unit 9 through the intake holes 4 and passes through it, and then blown out through the ventilation passage 10. Deodorizing filter 8,6 from 6,6
It is configured to circulate indoors via. On the other hand, in the dust collecting unit 9, as shown in FIG. 2, a plurality of needle electrodes 12 arranged in a matrix form a lattice-shaped counter electrode 13 formed of a stainless plate or the like inserted between them. The combined electrodes are housed in a frame 14 having a frame shape. The needle electrode 12, ... As shown in FIG. 3, is formed by forming a conductive metal plate of stainless steel, phosphor bronze, iron, tungsten or the like into a strip shape, and a pair of discharge electrodes 15, 15 is integrally formed at the tip thereof. The pair of formed discharge parts 16 ... And the pair of supports 17 'supporting the discharge parts 17', and the support part 17 ... , 17 'are connected in a row by a connecting portion 18 ... The supports 17 'and 17' are made of aluminum or an aluminum alloy, and these supports are connected by rivets 19 made of aluminum or the like. In the above embodiment, the counter electrodes 13 ... Are square, and two pairs of the discharge electrodes 1 are arranged on the diagonal lines 20 and 20 shown in FIG.
5 and 15 are positioned so that corona discharge is generated from these discharge electrodes toward the two surfaces of the corners of the counter electrodes 13 ..., And the dust collection efficiency can be improved by increasing the discharge area. Further, although the discharge electrodes 15 and 15 are arranged at four points in the above embodiment, they may be arranged so as to be located at one point, two points and three points on the diagonal line, or the rivet 19 made of aluminum.
・ ・ Although it is made of iron, it can be made of iron, and the weight of aluminum can be reduced. On the other hand, in FIG. 4, 21 ...
A plurality of slit-shaped engaging grooves 22 are bored at predetermined intervals as shown in FIG. Denoted at 23 ... are stopper pins for preventing the support portions 17 ... from falling off from the support fittings 21 ..., and the lower ends of the support portions 17 ... are placed in the engaging grooves 22 ... of the support fittings 21. After insertion, it is inserted into the insertion hole 25, which is drilled in the portion located in the groove 24 of the support fitting 21 of the support portion 17 ..., and is made of aluminum, steel material, resin, or the like. And, for example, locking grooves 27 for locking E-rings 26 ...
Is formed. Therefore, when assembling the needle electrodes 12, ..., As shown in FIG.
After connecting a pair of discharge parts 16 ... between 7'and 17 'with rivets 19 ..., the lower ends of these are fitted into the fitting grooves of the support fittings 21 ... As shown in FIG. 22 .. Insert the stopper pin 23 into the insertion hole 25.
····················· Inserted and mounted, and further, the E-ring 26 · · · is locked to this stopper pin, it can be assembled relatively easily. FIG. 6 shows another embodiment of the supporting metal fittings 21 ..., In which a sheet metal is bent and formed into a substantially U-shaped cross section, and the engaging groove 22 ...
.., in which e.g., stoppers 29 .., in which the insertion holes 28 .. of the stopper pins 23 .. are punched, are erected at both ends, the number of parts of the stoppers 29 .. However, as shown in FIG. 4, the mountability is good when the metal fitting 30 for fixing to the frame 14 is fixed to the bottom surface of the support metal fitting 21. Thus, when the air cleaner 1 is in operation, the blower fans 11, 11 are rotated and a predetermined high voltage is applied between the needle electrode 12 ... And the counter electrode 13 ... Of the dust collecting unit 9, After the room air is sucked from the intake hole 4 through the cover 5, the needle electrode 12 of the dust collecting unit 9 and the counter electrode 13 of the dust collecting unit 9
The gas is purified by passing through the space, and then discharged again through the ventilation passage 10 from the outlets 6 and 6 through the deodorizing filters 8 and 8 into the room.

[0006]

According to the structure of the present invention, the support portion of the needle electrode is made of aluminum or aluminum alloy, and the support portion is made of a flat plate. However, it is possible to prevent the deformation of the supporting portion, which is relatively weak, as much as possible. Further, according to the configuration of the present invention, the lower end of the support portion is engaged with the engaging groove of the support fitting to connect the support portions to each other, so that the support portions can be connected to each other with a relatively simple configuration. It is possible to reduce the weight and improve the assembling workability. Further, according to the structure of the present invention, the supporting metal fitting for connecting the electrodes to each other is formed in a substantially U-shaped cross section, and the pin member for retaining is arranged in the groove of the supporting metal fitting, so that the electrode can be easily and surely Can be arranged in line. Further, according to the configuration of the present invention, by disposing the discharge electrode of the needle electrode on the diagonal line of the counter electrode, corona discharge is performed toward the two surfaces forming the corners of the counter electrode, and the dust collection efficiency is increased by increasing the discharge area. It can be improved.

[Brief description of drawings]

FIG. 1 is a front vertical sectional view showing an embodiment of an air cleaner using a discharge electrode according to the present invention.

FIG. 2 shows an embodiment of a discharge electrode according to the present invention,
(A) is a perspective view and (b) is a plan view.

FIG. 3 is likewise an exploded perspective view of a main part.

FIG. 4 is a perspective view of the same.

FIG. 5 is a partially exploded perspective view of the same.

FIG. 6 is a partially exploded perspective view showing another embodiment of the present invention.

[Explanation of symbols]

12 Needle electrode 1 Counter electrode 15 discharge electrode 16 Discharge part 17 Support 17 'support 18 Connection 21 Support bracket 22 Engagement groove 23 Stopper pin 25 insertion holes

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI B03C 3/60 B03C 3/60 F24F 7/00 F24F 7/00 B (72) Inventor Noriaki Hirano Minamiyoshikata 3-chome, Tottori City, Tottori Prefecture 201 Tottori Sanyo Electric Co., Ltd. (72) Inventor Takashi Matsuda 3-201 Minamiyoshikata, Tottori-shi, Tottori Prefecture Tottori Sanyo Electric Co., Ltd. (56) Reference JP-A-7-80348 (JP, A) ( 58) Fields investigated (Int.Cl. ⁷ , DB name) B03C 3/00-3/88

Claims (4)

(57) [Claims] 1. A combination of the two Doru electrode, and arranged counter electrodes as close to the needle electrodes surrounding it
The needle electrode is
An electrode, stainless steel, phosphor bronze, iron, a discharge portion made of a conductive metal such as tungsten, is composed of a supporting portion made of aluminum for supporting the discharge part, the support part
It is composed of a pair of supports sandwiching the discharge part in between.
Also, the discharge electrode for an air cleaner is characterized in that the support is a flat plate . Wherein the lower end of the supporting portion Te on the connecting portion to form a connected body connected to each other several, at least a pair of support brackets having a plurality of engaging inlet grooves for engaging enter the lower end of the connecting body Wherein the plurality of connecting bodies are arranged side by side by engaging the lower end of the connecting body with the engaging groove of the support fitting, and the needle electrodes are arranged in a matrix. Item 2. A discharge electrode for an air cleaner according to Item 1. 3. The supporting metal member is formed by bending a sheet metal into a substantially U-shaped cross section, and each of the connecting members is formed with an insertion hole in a portion located in the groove of the supporting metal member. The discharge electrode for an air cleaner according to claim 2, wherein a pin member for preventing slipping out is inserted into the insertion hole. 4. A needle electrode, a combination of a counter electrode arranged so as to surround it in contact near <br/> to the needle electrodes
The air of the needle electrode
An air cleaner characterized in that a plurality of discharge electrodes are formed at an end on the upstream side , the counter electrodes are formed in a square cylindrical shape , and the discharge electrodes are located on diagonal lines of the counter electrodes. Discharge electrode.