JPH0417238Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an electrostatic air cleaner used for home use, automobile use, clean room use, etc.

BACKGROUND ART Conventional electrostatic air cleaners are constructed as shown in FIGS. 3 and 4. That is, a configuration is adopted in which a DC high voltage is applied from a power source 3 between the ionization electrode 1 and the counter electrode 2, and the ionization electrode 1
As shown in FIG. 4, a main filter 4 made of a nonwoven fabric made of charged fibers is arranged in a wavy shape, and the ridgeline of the waveform of the main filter 4 is provided approximately parallel to the ionizing electrode 1. Ta. A ground electrode 5 having air permeability and conductivity was provided on the leeward side of the main filter 4 and was formed into a wave shape corresponding to the wave shape of the main filter. Further, the wave-shaped valley portion of the main filter 4 was provided facing the ionization electrode 1. Reference numeral 6 denotes a fan motor that circulates air from an intake port 8 provided in the case 7 to an air outlet 9. Further, a prefilter 10 and a ground plate 11 were disposed between the air intake port 8 and the ionization electrode 1. An opening 12 for replacing the main filter 4 was formed in the case 7, and a lid 13 was detachably attached thereto.

The operation of the above configuration will be explained below.

When the fan motor 6 is driven, dust-containing air is sucked through the intake port 8, and coarse dust is removed by the prefilter 10. The fine dust in the dust-containing air that has reached the vicinity of the ionization electrode 1 is charged by an ionic current flowing therethrough due to the voltage applied between the ionization electrode 1 and the counter electrode 2 . The charged fine dust flows into the main filter 4, generates an electrostatic force between it and the local electric field generated within the main filter 4, and is attracted and collected. The air from which even minute dust has been removed is discharged from the air outlet 9.

Problems to be Solved by the Invention However, in the above conventional configuration, the ionization electrode 1 was provided opposite to the wave-shaped trough of the main filter 4 in order to increase the dust collection efficiency to the required level. , the number of poles of the ionizing electrode 1 and the counter electrode 2 is large, which is disadvantageous in terms of man-hours and manufacturing costs. Also, ionization electrode 1
Since the interval between the ionizing electrode 1 and the counter electrode 2 is a constant interval based on the discharge characteristics, the interval between the troughs of the main filter 4 provided opposite the ionizing electrode 1 is also limited. Furthermore, the case 7 that houses the main filter 4 and the like has become larger, which poses problems in terms of manufacturing cost and usability.

The present invention solves the above-mentioned conventional problems, and aims to provide an electrostatic air purifier that is small and has excellent usability and dust collection efficiency, and is also economically effective. .

Means for Solving the Problems In order to achieve this objective, the electrostatic air purifier of the present invention has an ionizing electrode part having multiple pairs of linear ionizing electrodes and counter electrodes, a main filter, and a breathable and conductive part. the linear ionization electrode and the counter electrode are provided facing each other, a main filter is provided on the leeward side of the ionization electrode section, and a grounding electrode is provided on the leeward side of the main filter. The main filter has a wavy shape, and the ridgeline of the wavy shape is disposed in a direction substantially perpendicular to the linear ionization electrode.

Effect With the above configuration, it is possible to oppose the linear ionization electrode across the entire width of the main filter, and it is also possible to freely select the wave pitch of the waveform of the main filter. The flow rate of air passing through the main filter can be reduced, making it possible to improve dust collection efficiency. In addition, since the number of poles of the linear ionization electrode and the counter electrode and the wave pitch of the main filter can be set as appropriate, it is possible to achieve miniaturization, thereby reducing manufacturing costs and improving usability.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In the figure, 14 is an ionization electrode section consisting of a linear ionization electrode 15 and a flat counter electrode 16 provided opposite to the linear ionization electrode 15. For the wind direction A (Fig. 1) of the passing dust-containing air,
are arranged in parallel. On the leeward side of the ionizing electrode section 14, a dust collection section 19 is provided, which consists of a main filter 17 made of a nonwoven fabric of charged fibers and a ground electrode 18 having air permeability and conductivity.
The main filter 17 and the ground electrode 18 are integrally formed into a wave shape and are attached to the frame 20. The wave-shaped ridgelines of the main filter 17 and the ground electrode 18 are approximately perpendicular to the linear ionization electrode 15. A pre-filter 21 and a ground plate 22 are provided upwind of the ion electrode section, and a dust collection section 19
A fan motor 26 for forcibly circulating air from an intake port 24 provided in the main body case 23 to an air outlet 25 is provided on the leeward side of the main body case 23 . Main case 2
3 is formed with an opening 27 for replacing the main filter 17, and the lid 2 can be detachably attached to this opening 27.
8 is attached. Further, a DC high voltage is applied to the linear ionization electrode 15 from a power source 29,
The counter electrode 16, the ground electrode 18, and the ground plate 22 are grounded.

With the above configuration, when the fan motor 26 is driven, dust-containing air is sucked in from the intake port 24 and coarse dust is removed by the prefilter 21, similar to the conventional configuration. The fine dust in the dust-containing air that has reached the vicinity of the linear ionization electrode 15 is charged by an ionic current flowing therethrough by the DC high voltage applied between the linear ionization electrode 15 and the counter electrode 16 . The charged minute dust flows into the main filter 17 approximately perpendicularly, generates an electrostatic force between it and the local electric field generated in the main filter 17, and is attracted and collected. The air from which even minute dust has been removed is discharged from the air outlet 25.

Therefore, according to this embodiment, the main filter 17 and the ground electrode 18 are formed in a wave shape, and the ridgeline of the waveform is arranged at a substantially right angle to the linear ionization electrode 15, so that the Ionization electrode 15
The air passing through the opposite electrode substantially in parallel flows into the main filter 17 substantially orthogonally, and since the main filter 17 can arbitrarily set the wave pitch of its waveform, by reducing the wave pitch, the main filter It is possible to effectively reduce the flow velocity of the air passing through the filter 17, thereby increasing the dust collection efficiency. In addition, by reducing the wave pitch of the main filter 17, the area when the main filter 17 is expanded can be reduced.
It is possible to make the main filter 17 larger than the overall cross-sectional shape of the duct, and the main filter 17 can be made smaller.
Therefore, the device can be made smaller. By reducing the size, manufacturing costs can be reduced, the degree of freedom in selecting the installation location can be increased, and usability can be improved.

Effects of the Invention As is clear from the description of the above embodiments, according to the present invention, the main filter is formed into a wave shape, and the ridge line of the waveform is provided approximately perpendicular to the linear ionization electrode, so that the linear ionization electrode The wave pitch of the main filter can be set regardless of the arrangement interval of the main filter, and by reducing the wave pitch, it is possible to reduce the air passage speed and increase the air passage area of the main filter. , it becomes possible to increase dust collection efficiency. Furthermore, since the passage area of the main filter can be made larger than the overall cross-sectional shape of the duct, the main filter can be made smaller, and the device can be made smaller. In addition, the number of poles of the linear ionization electrode can be set regardless of the wave pitch of the main filter, increasing dust collection efficiency by selecting the wave pitch of the main filter, and making the device more compact.
The number of poles of the linear ionization electrode is reduced, and its installation process becomes easier. In addition, by reducing the number of poles of the linear ionization electrode and downsizing the device, manufacturing costs can be reduced and the degree of freedom in selecting the installation location can be increased.
This improves usability.

Therefore, according to the present invention, it is possible to provide an electrostatic air cleaner that is small in size, has high dust collection efficiency, is easy to use, and has excellent economic effects.

[Brief explanation of drawings]

Figure 1 is a cross-sectional plan view of an electrostatic air cleaner according to an embodiment of the present invention, Figure 2 is a longitudinal sectional view of the main parts of the same electrostatic air cleaner, and Figure 3 is a conventional electrostatic air cleaner. FIG. 4, which is a plan cross-sectional view of the cleaner, is an explanatory diagram of the structure of the main filter of the electrostatic air cleaner. 14... Ionization electrode section, 15... Linear ionization electrode, 16... Counter electrode, 17... Main filter, 18... Ground electrode, 19... Dust collection section.

Claims (1)

[Claims for Utility Model Registration] (1) An ionization electrode section having a plurality of pairs of linear ionization electrodes and counter electrodes, and a dust collection section having a main filter and a ground electrode having air permeability and conductivity, The linear ionization electrode and the counter electrode are provided to face each other, a main filter is provided downstream of the ionization electrode section, a ground electrode is provided downstream of this main filter, and the main filter has a wave shape, and the waveform is The ridgeline is an electrostatic air purifier arranged approximately perpendicular to the linear ionization electrode. (2) The electrostatic air purifier according to claim 1, which is a utility model and has air flowing into the surface formed by the ridge lines of the waveform of the main filter at a substantially right angle. (3) The electrostatic air cleaner according to claim 1, wherein the ground electrode has a wave shape corresponding to the main filter and is provided integrally with the main filter.