JPH04310250A - Air filter and method for mounting the same - Google Patents

Abstract

PURPOSE:To provide a thin air filter enhanced in safety and made easy in the mounting on various machineries such as an air purifier or the like and to achieve the enhancement of the dust collecting capacity of an electrostatic filter material and the extension of the life thereof. CONSTITUTION:An air filter is constituted of a flat plate-shaped high voltage electrode 5 provided with many venting pores 1, a low voltage electrode 4 arranged in parallel to said electrode 5 and provided with venting pores 2 smaller than those of the high voltage electrode 5 and the electrostatic filter material 6 arranged between both electrodes. Further, by mounting the air filter 4 so that the high voltage electrode 15 is arranged on the side of the blower 13 of an air purifier 9, a conductive wire can be brought to the state touching with the low voltage electrode 4 and the electric shock due to the high voltage electrode 5 can be prevented and a highly safe structure wherein the high voltage electrode 15 is surrounded by earth potential can be obtained.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air filter having a thin and safe structure that is attached to equipment such as an air cleaner, and a method for attaching the same.

0002

2. Description of the Related Art A conventional air filter will be explained below. As shown in FIG. 7, the air cleaner 23 uses a blower 27 to collect dust from the air taken in through the suction port 25 provided in the case 24, and the ground electrode plate 31 made of iron or the like of the ionizer 30 and the ground electrode plate 31 made of tungsten wire. It is charged by passing between the high-voltage wires 32, and the electret material 29, which is itself electrically charged, is passed through the electrostatic filter material placed in the dust collection filter 28, thereby removing dust by blocking or Coulomb force. However, clean air was discharged from the discharge port 26 in the direction indicated by the arrow. The air cleaner 23 is controlled by a control unit 34 and is connected to a high voltage power source 33.
6 KV is applied between the ground electrode plate 31 and the high voltage line 32.

0003

[Problems to be Solved by the Invention] However, the above conventional configuration requires the ionizer 30 and the dust collection filter 28, so it is difficult to make it thin, and it is difficult and expensive to install it in various devices. Since the high voltage line 32 of the ionizer 30 is located near the suction port 25, there is a risk that it may be touched by people or objects. In order to avoid these problems, when using a non-electric dust collection filter 28 that uses only electret material 29, if charged particles adhere, the electret material 29 in that part
Since the electrification of No. 9 is neutralized, there is a problem that the life of the filter is shortened.

The present invention solves the above-mentioned conventional problems, and provides an air filter that is highly safe, inexpensive, long-lasting, thin and easy to attach to various devices, and a method for attaching the same. With the goal.

[0005]

[Means for Solving the Problems] In order to achieve this object, the air filter of the present invention includes a flat high-voltage electrode provided with a large number of ventilation holes, and a high-voltage electrode arranged in parallel with the high-voltage electrode. A configuration including an electrostatic filter material disposed between a flat plate-shaped low voltage electrode provided with a large number of ventilation holes smaller than the size of the holes.

[0006] The air filter has a configuration in which a high voltage electrode is provided on the inner surface of a flat case provided with a large number of ventilation holes, or a configuration in which a low voltage electrode formed of a conductive net is provided.

[0007] Furthermore, when installing the air filter to equipment equipped with an air blower, the high voltage electrode of the air filter is placed on the side of the air blower.

[0008]

[Effect] This configuration increases the probability of contact with the low voltage electrode when a conductive wire-like object enters from the inlet, and also prevents direct contact with the high voltage electrode from outside the device equipped with the air filter. It happens.

[0009]

【Example】

(Embodiment 1) A first embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 4, a large number of ventilation holes 1 are formed of a wire mesh or lath plate made of tungsten, copper, aluminum, iron, etc., or a conductive net made of carbon-containing polypropylene resin, etc. A flat plate-shaped high voltage electrode 5 provided with a high voltage contact 7 is attached to the case 3
It is connected to the. A flat plate-shaped low-voltage electrode 4 made of the same material and provided with a large number of ventilation holes 2 smaller in size than the ventilation holes 1 of the high-voltage electrode 5 is attached to the case 3 and connected to the low-voltage contact 8. 6 is an electrostatic filter material. If the size of the ventilation holes 1 of the high-voltage electrode 5 is made to be approximately the same as the thickness of the dust collection filter, deterioration of dust collection performance and reduction in service life can be minimized. As an example, the thickness of the dust collection filter is 10
mm, and when the interval between the ventilation holes 2 of the low-voltage electrode 4 is 2.5 mm square, the air filter with the interval between the high-voltage lines of the ventilation hole 1 of the high-voltage electrode 5 is 10 mm, and the size of the ventilation hole 2 of the low-voltage electrode 4 is 2.5 mm square. 5
There is almost no difference in dust collection performance or lifespan compared to air filters that are only mm square. When a conductive wire-like object enters from the suction port placed on the side of the low-voltage electrode 4, the probability of it touching the low-voltage electrode 4 provided with the small ventilation hole 2 is increased, and the low-voltage is removed before touching the high-voltage electrode 5. By touching the electrode 4, electric shock caused by the high voltage electrode 5 can be prevented and safety can be improved.

In addition, since no ionizer is used, it can be made thin and a pre-filter etc. can be easily attached.
The dust collection performance is further improved, safety is further improved, and it can be easily installed on various types of equipment. Since this air filter applies an external electric field to the electrostatic filter material 6, it is possible to improve the dust collection performance and extend the service life. In addition, when using a pleated electrostatic filter material 6, the surface through which air passes increases, resulting in high dust collection performance, and the electric charge of charged dust particles can be removed by a high-voltage power supply, resulting in a longer life. becomes possible.

(Embodiment 2) A second embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 5, the air purifier 9 has its entire device controlled by a control unit 19, and a blower 13 such as a cross flow fan or a sirocco fan is used to blow air from an inlet 11 provided in a case 10 to an outlet 12. Ventilation is provided in the direction indicated by the arrow. The air filter 14 is connected to a high voltage power source 18 with an electrostatic filter material 17 sandwiched between a high voltage electrode 15 and a low voltage electrode 16. A low-voltage electrode 16 with a ground potential is provided on the side of the inlet 11, and a high-voltage electrode 15 with a potential of DC 2.5 KV is provided on the side of the blower 13. Since it is set at ground potential, a highly safe structure in which the high voltage electrode 15 is surrounded by ground potential can be achieved.

(Embodiment 3) A third embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 6, a high-voltage electrode 21 formed by applying or vapor-depositing a conductive material is attached to the inner surface of a flat case 35 provided with a large number of ventilation holes 20 of an air filter, and a high-voltage contact 22 If the configuration is such that the high-voltage electrode 21 is not directly contacted from the outside of the case 35, safety is further improved.

[0016] Furthermore, by forming a low-voltage electrode using an inexpensive conductive net made of carbon-containing polypropylene resin, etc., a low-voltage electrode of any size can be easily realized, and it can be attached to the case with adhesive or long-wave adhesive. Because you can
The number of structural man-hours is reduced and the manufacturing cost is also reduced.

[0017]

[Effects of the Invention] As is clear from the above description of the embodiments, the present invention is characterized by making the ventilation holes of the low voltage electrode smaller than the ventilation holes of the high voltage electrode, and by arranging the high voltage electrode on the inner surface of the case of the air filter. In addition, by forming the low-voltage electrode using a conductive net made of inexpensive material, it is possible to create an excellent air filter that is highly safe, inexpensive, has a long life, and is thin and easy to attach to various devices. be.

Furthermore, by arranging the high voltage electrode of the air filter on the side of the blower of the equipment to be installed and the low voltage electrode of the air filter on the side of the suction port of the equipment, an excellent and highly safe method of installing the air filter is realized. It is possible.

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view showing the concept of essential parts of an air filter according to a first embodiment of the present invention.

[Figure 2] Schematic plan view of the air filter

[Figure 3] Schematic diagram of the bottom of the air filter

[Figure 4] Schematic side view of the air filter

[Fig. 5] A schematic diagram showing the concept of the main parts of an air cleaner according to a second embodiment of the present invention.

FIG. 6 is a schematic front view of a high-voltage electrode of an air filter according to a third embodiment of the present invention.

[Figure 7] A schematic cross-sectional diagram showing the concept of the main parts of a conventional air purifier

[Explanation of symbols]

4 Low voltage electrode 5 High voltage electrode 6 Electrostatic filter material

Claims (4)

[Claims] 1. A flat plate-shaped high-voltage electrode provided with a large number of ventilation holes, and a flat plate-shaped low-voltage electrode provided with a large number of ventilation holes larger than the size of the ventilation holes of the high-voltage electrode arranged parallel to the high-voltage electrode. An air filter comprising an electrode and an electrostatic filter material disposed between the high voltage electrode and the low voltage electrode. 2. A method for attaching the air filter according to claim 1, wherein the high voltage electrode of the air filter is disposed on the side of the blower of a device equipped with the blower. 3. The air filter according to claim 1, further comprising a high voltage electrode stuck to the inner surface of a flat case provided with a large number of ventilation holes. 4. The air filter according to claim 1, further comprising a low voltage electrode formed of an induction net.