JPS60153957A - Electrostatic air cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrostatic air cleaner in which a positive electrode plate and a negative electrode plate are separately disposed and a high voltage is applied to these plates.

Conventional electrostatic type 1 arenas of this type generally have a two-stage structure consisting of a discharge section and a dust collection section, and a high-voltage electric wire for positive corona discharge is stretched in the discharge section. Incoming dust and cigarette particles are charged to a 1-positive charge, and positive and negative plates are alternately arranged in the dust collection section, and the charged dust and other particles are electrostatically charged in the discharge section. It absorbs.

In this case, generally the high voltage electric wire in the discharge section is 6. QOO~1
At a voltage of 0.000 volts, the electric power applied to the electrode plates of the dust collecting section is about 4,000 to 6,000 volts.

In conventional general electrostatic air cleaners like the one mentioned above,
The electrode plate of C is composed of a conductive sheet material (in contrast, the present applicant's invention in JP-A-58-20251 proposes to cover the electrode plate with a non-conductive sheet material). Moreover, the applicant K1 filed the application in 1973.
In 7-86101, at least one end edge of the air inflow side and the air outflow side of one electrode plate is protruded outward from the corresponding end of the other 7t7ui &.
We provided an electrostatic air cleaner that

The above-mentioned electrostatic upper air cleaner provided by the inventor of the Wood M+ exhibits effective ti1m collection ability without using the high-voltage power source of the discharge section of conventional general air cleaners. However, the charging state of dust and the like by the electrode plate varies greatly depending on the state of the atmosphere, particularly the ionization state of the atmosphere, etc., and there is a problem that the dust collection efficiency by the electrode plate becomes unstable.

The present invention has been made in view of the above-mentioned problems, and its object is to provide an electrostatic air cleaner having at least one of the -h electrode plates made of a non-conductive sheet material.
The object of this invention is to improve the electrostatic efficiency by improving and covering the sheet-shaped electrode plate to improve the charging state of dust and the like reaching the electrode plate.

In order to achieve the above object, in the electrostatic type upper cleaner of the present invention, a conductive elongated portion is integrally formed on the air inflow side edge of the electrode plate made of a non-conductive sheet material. It is connected to a high voltage power supply.

Preferably, the negative electrode plate is formed from a conductive sheet material, and the positive electrode plate is formed from a non-conductive sheet material, with the air inflow side edge thereof protruding outward beyond the air inflow side edge of the negative electrode plate. The conductive elongated portion is integrally formed on the air inflow side edge of the protruding positive electrode plate.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An electrostatic air cleaner according to a preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

In the electrostatic air cleaner shown in FIG. 1, a positive electrode plate Y1 and a negative electrode plate group 2 are arranged close to and separated from the intersection Ii, and the positive electrode plate group 1 has a plurality of conductive metal connecting rods. 3-3 is fixed at a predetermined interval and position, and the negative electrode plate group 2 is cut out at the portion of the positive electrode plate group 1 through which the connection 11 joint 3-3 passes, to prevent it from coming into contact with this and causing a short circuit. It is prevented.

Similarly, the negative electrode plate group 2 is also fixed at predetermined intervals and positions by a plurality of conductive metal connecting rods 4-4.
The portion of the positive electrode plate group 1 through which the connecting rod 4-4 of the negative electrode plate group 2 passes is cut out to prevent short circuits. The arrows in the figure indicate the direction of air flow. Each of the positive electrodes &1 is made of a non-conductive sheet material as shown in Japanese Patent Application Laid-Open No. IN+ 58-20251. Preferably, the cardboard is made of glossy paper. By forming it from coated fiber paper, the -power negative electrode plate 2 is preferably formed from an electrically conductive sheet material, for example, from carbon-containing cardboard.

Further, the air inflow side edge 1a and the air outflow side edge 1b of the positive electrode plate 1 are slightly projected outward from the corresponding ends of the negative electrode plate 2. The amount of outward protrusion of each of the end edges 1a and 1b is preferably about 1 to 3 times the gap between adjacent positive and negative electrode plates, more preferably about 2 times. ·be.

In the first embodiment of the present invention, a conductive strip 58 is integrally formed on the air inflow side edge of the positive electrode plate 1 made of a non-conductive sheet material. This strip-like Ul 5 a is preferably formed by coating the end face of the positive electrode plate 1 a with a coating agent such as conductive pane. This strip material 5a is connected to the conductive pane 1 through a conductive wire material 6-6 to a connecting rod 3-3, and this connecting rod 3-3 is connected to a high-voltage power source (
It is connected to "L" shown in the figure.The other connecting door 1-4 is grounded.

In the electrostatic air cleaner of the present invention having the above configuration, the conductive strip material 5a of the positive electrode plate 1 made of the non-conductive sheet 1 forms an extremely strong electric field, and this electric field It is also stable with respect to the state. Therefore, the negative charge of dust and cigarette particles in the air sucked into this air cleaner is weak in the normal state, and the strong positive electric field formed by this conductive strip material 5a causes the particles to A strong suction force is applied to the particles, causing them to be attracted to the positively charged non-conductive sheet material. Furthermore, the surface charge of the positive electrode 1 itself, which is made of a non-conductive sheet, is higher than that of the atmosphere! i! Even if it is weakened due to IQ etc., the conductive strip material 5
The corner-charged particles move at high speed due to the attractive force due to the strong positive electric field formed by il[44! It will collide with plate 1 and be caught on it.

When the conductive strip 85a is compared with a high-voltage electric wire connected to the discharge section of a conventional electrostatic air creep, its function is fundamentally different. In other words, the conventional high-voltage electric wire in the discharge section is used to once positively charge particles in the inflowing air, and the positively charged particles are then attracted to the negative electrode plate in the dust collection section and become IQ. . On the other hand, the conductive strip material 5a is positively charged, but it is used merely to strengthen the positive electric field at the edge of the non-conductive positively charged electrode plate. Therefore, the weakly negatively charged particles in the incoming air are adsorbed to the positive electrode plate by applying strong suction horns, and the function of this conductive strip material 5a is to move in the opposite direction to that of the conventional high-11 electric wire in the discharge section. It is doing this.

In the first embodiment of the present invention described above, the conductive strip material 58 is attached to the electrode plate 1.
Although the conductive strip material 511 is provided only at the front end of the air inflow side perpendicular to the air inflow direction, the present invention is not limited to this, as shown in FIG. The conductive strip material 5G may be formed by extending to the entire edge of one side of the plate 1, or as shown in FIG.
The whole of both side edges of the electrode plate 1 parallel to the air inflow direction of
'A conductive strip 5d may be formed on the entire circumferential edge of the electrode plate 1, as shown in FIG. However, in the case of the above side deviation, it is necessary to connect the conductive strips 5a to 5d to a high voltage power source. As mentioned above, the more the strip material is extended to the peripheral edge of the non-conductive electrode plate, the more the molecular li state of the surface charge over the entire surface of the non-conductive electrode plate is improved.

Further, it is preferable to form the conductive materials 58 to 5d with a coating agent such as conductive paint from the viewpoint of ease of production and transportation, but metal strips may be bonded to the electrode plates. Also, a wire material may be used instead of this conductive strip material.

In the above embodiments of the present invention, an example was described in which a non-conductive strip material was installed on the positive electrode plate.
8-20251, attach the negative electrode plate to a non-conductive sheet 1).
When the plate is made of autumn wood, a conductive strip (Δ) is integrally formed on the edge of the negative plate, as in the case of the positive plate.
] can be done.

According to the electrostatic air cleaner of the present invention,
Positive electrode plate 1 and f1 electrode plate 2 are arranged separately, and at least one of these electrode plates is composed of non-conductive sheets 1 to 1,
In an electrostatic air cleave in which a high voltage is applied to the bipolar plates, a conductive elongated portion is integrally formed on the air inflow side edge of the non-conductive sheet 1 to material, and the elongated conductive portion is connected to a high voltage power source. Therefore, particles such as dust and cigarettes in the inflowing air that are charged with a polarity different from that of the conductive strip are strongly attracted to the electrode plate forming the conductive strip and are adsorbed by -C. ,
On the other hand, particles charged to the same polarity as the conductive elongated portion are repelled by the strong horns, collide with the opposite electrode plate, and are adsorbed, thereby significantly increasing the dust collection effect. In addition, this conductive elongated portion improves and strengthens the overall charging state of the non-conductive sheet 1 to material, thereby improving the dust collection effect.

Generally, VP dust etc. in the air sucked into the air cleaner is charged at the thick corners, so if this conductive elongated part is formed at the air inlet edge of the positive electrode plate, the dust will be collected even more. It is possible to increase the effectiveness.

In addition, when the air inflow side edge of the positive electrode plate is projected outward from the air inflow side edge of the negative electrode plate, and the conductive elongated portion is formed on this protruding edge, Particles such as dust, which are normally negatively charged in the intake air, are first affected by the conductive strip and deflected toward the positive electrode plate, and then the entire positive electrode plate becomes strongly positively charged. Since the dust is strongly attracted and attached to the positive electrode plate, the dust collection effect becomes even more effective.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an electrostatic air cleaner according to a first embodiment of the present invention, not showing essential parts, FIG. 2 is a perspective view of a positive electrode plate used in the air cleaner in FIG. 1, and FIGS. FIG. 5 is a perspective view showing the electrode plates of electrostatic air cleaners according to second to fourth embodiments of the present invention. 1・・・・・・・・・Positive electrode plate 2・・・・・・・・・Negative electrode plate 3.4・・・Connected 1 piece 58 to 5 d... Conductive thin strip

Claims (6)

[Claims] (1) In an electrostatic air cleaner in which a positive electrode plate and a negative electrode plate are arranged separately, at least one of the electrode plates is made of a non-conductive sheet material, and a high voltage is applied to both electrode plates, An electrostatic air cleaner characterized in that a conductive elongated portion is integrally formed on the air inflow side edge of the non-conductive sheet material, and the elongated portion is connected to a high voltage power source. (2) The electrostatic air cleaner according to claim 1, wherein the conductive elongated portion is formed at the air inflow side edge portion of the positive electrode plate. (3) The air inflow side edge of the positive electrode plate is projected outward from the air inflow side edge of the negative electrode plate, and the protruding air inflow side edge of the positive electrode plate is electrically conductive. Feature 1: The electrostatic 1% type % according to claim 1 or 2, characterized in that the electrostatic type 1% type % is formed by forming a thin elongated portion. (4) The electrostatic type according to any one of claims 1 to 3, characterized in that the conductive elongated portion is formed by applying an isoelectric coating agent to the edge of the electrode plate. 1 set% (5) The conductive elongated portion is formed continuously on an air inflow side edge of the electrode plate that is perpendicular to the air inflow direction and an edge that is parallel to the air inflow direction. An electrostatic air cleaner according to claims 1 to 4. (6) The conductive elongated portion is formed around the entire circumference of the electrode plate,
Electrostatic air cleaner as described in section.