JPS6316060A - Electrostatic type air purifier - Google Patents

Abstract

PURPOSE:To enhance the strength of a case and to reduce the thickness thereof, by forming the depth dimension of the take-out port provided to the case so as to make the same smaller than that obtained when a main filter and an earth electrode superposed to each other are expanded in the case. CONSTITUTION:When a charged filter 29 is taken out for the purpose of maintenance and replacement, the charged filter 29 can be taken out from a take-out port 35 along with an earth electrode 28 by drawing out a frame body 30 because said filter 29 is united with the frame body 30. Even when the take-out port 35 is smaller than the depth length of the charged filter 29 and the earth electrode 28 at the time of operation, the charged filter 29 and the earth electrode can be taken out by deforming both of them. When the bag-shaped charged filter 29 and the earth electrode 28 are mounted in a case, both of them are inserted in the case in a deformed and closed state but, since opened by the air flow of a blow fan 24, normal operation can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electrostatic air cleaner used for home use, automobile use, clean room use, and the like.

Conventional technology A conventional electrostatic air cleaner will be explained based on the drawings.

Figure 2 shows the configuration of a conventional electrostatic air purifier.
.

The ground metal n4 having air permeability is formed of a wire mesh, a punched iron plate, etc., and is grounded.
A fan 5 for blowing air driven by a motor 6 is provided downstream of @n4 in the airflow. On the other hand, a shield member 7 is provided upstream of both electrodes 1 and 2 in the airflow, and this shield member 7 shields the ionization section composed of the ionization electrode 1 and the counter electrode 2, and
It supports the prefilter 8. Reference numeral 11 denotes a case, which has an air inlet 9 and an air outlet 10. A high voltage power supply 12 is connected to the ionization electrode l. In case 11, -
An opening 14 is formed to take out the grounded metal cap 4 having a high temperature and the charged filter 3, and 13 is a lid thereof. The charged filter 3 has fibers 3 as shown in an enlarged view in FIG.
a is charged and entangled in a complicated manner.

The operation in this configuration will be explained. When the air purifier is operated, dust-containing air is sucked through the intake port 9, coarse dust is removed by the pre-filter 8, and when it reaches between the ionization electrode 1 and the counter electrode 2, fine dust is charged by the ion current. . When charged dust flows into the charged filter 3, fffif
The fibers are subjected to electrostatic force by the local electric field inside the fiber filter 3, and are attracted to the fiber surface and collected. At this time, the surface of the charged filter 3 on the ionization electrode 1 side becomes high voltage due to the adhesion of charged dust. Due to this increase in potential, a high voltage is applied between the air permeable ground metal n4 at the rear of the charged filter 3 and the surface of the charged filter 3, increasing the electric field.
Increases collection efficiency. In this way, dust in the dust-containing air is collected, and the clean air is sent out from the air outlet 10.

In order to increase the collection efficiency, it is better to lower the speed at which air passes through the charged filter 3. Therefore, as shown in FIG. 2, the charged filter 3 is shaped like a bag to reduce the speed of the airflow passing through it.

Problems to be Solved by the Invention However, in the conventional configuration, the opening 14 for taking out and replacing the charged filter 3 must be made large, which makes the lid 13 large and the case 11
This case 1
If it is necessary to thicken 1 or provide reinforcing ribs on the case 11, and when 1E13 is opened, the high voltage power supply 12
The installation location of attached devices such as safety devices that turn off
This made the device larger and more expensive.

The present invention solves the above-mentioned problems, and aims to provide a small, lightweight, and inexpensive electrostatic air cleaner with a structure that allows the outlet for replacing the charged filter to be made smaller. It is something to do.

Means for Solving the Problems In order to solve the above problems, the present invention provides an ionization electrode i
A frame body configured to be detachable in a direction intersecting the airflow is provided in a portion of the case downstream of the ionization section consisting of an electrode and an opposing electrode.

This frame has a bag-shaped ground m pole that has breathability, conductivity, and flexibility, and has an opening facing the upstream side of the air flow, and this ground 1! The bag-shaped main filter inserted into the pole is attached so as to be overlapped with the main filter, and the case is provided with an outlet from which the frame body can be taken out together with the main filter and the ground electrode. The main filter and the ground electrode are formed smaller than the depth dimension when expanded inside the case.

Effects According to the above structure, the bag-shaped main filter and the bag-shaped ground electrode can be deformed and reduced in size and installed in and removed from the case while being supported by the frame, and the bag-shaped main filter that has been further reduced and installed can be The filter and the bag-shaped ground electrode are expanded by air blowing by a fan and are brought into a normal state, so that the bag-shaped main filter and the bag-shaped ground electrode do not attach or detach in an expanded state as in the past. This allows the outlet to be made smaller.

Embodiment □ Below 1 An embodiment of the present invention will be described based on the drawings.

Figure 1 shows an electrostatic air cleaner according to a first embodiment of the present invention.
In FIG. 1', which shows a configuration diagram, an ionization section is formed by placing an ionization electrode 21 and a counter electrode 22 facing each other and applying a high voltage generated by a high voltage power source 23. Motor 2 is installed downstream of the ionization section in the airflow.
A fan 24 driven at 5 is provided to generate an air flow flowing from an air intake 26 to an air outlet 27.

A frame 30 is provided between the ionization section and the fan 24, and the frame 30 is configured to be detachable from the inside of the case 31 in a direction intersecting the airflow.

A bag-shaped ground electrode 28 is provided on the frame 30, and this ground electrode 28 is made of fibrous activated carbon, metal mesh, or the like, and has breathability, conductivity, and flexibility. There is. Further, a charged filter 29 serving as a bag-shaped main filter is housed inside the ground electrode 28 . The charged filter 29 and the ground electrode 28 are stacked in this order with the opening side facing upstream of the airflow, and the opening side is attached to the frame 30 by a holding plate 34.

These frame body 30, charged filter 29 and ground electrode 28
is configured to be integrally detachable from the inside of the case 31 in a direction intersecting the airflow. When the charged filter 29 and the ground electrode 28 are mounted inside the case 31 together with the frame 30, they are forced and expanded by the air blown by the air blower fan 24.

The case 31 is formed with an outlet 35 from which the charged filter 29 and the ground electrode 28 can be taken out together with the frame 30. The depth dimension is smaller than the depth dimension when expanded inside 31. Further, the outlet 35 is covered with M36.

A ground plate 32 and a pre-filter 33 having air permeability are provided upstream of the ionization section in the airflow.

The dust removal effect in this configuration is the same as in the conventional case.

When taking out the charged filter 29 for maintenance and replacement,
Since this charged filter 29 is integrated with the frame 30, it can be taken out from the outlet 35 together with the ground electrode 28 by pulling out the frame 30.

Even if the outlet 35 is smaller than the depth of the charged filter 29 and the ground electrode 28 during operation, the charged filter 29
The ground electrode 28 can be taken out by deforming it. Furthermore, when the bag-shaped charged filter 29 and the ground electrode 28 attached to the frame body 30 are inserted into the case 31 in a deformed and closed form, they are opened by the wind from the ventilation fan 24. Therefore, normal operation is possible.

By making the outlet small in this way, the case 31
The strength of the material can be increased, making it possible to make the wall thinner and reduce the need for reinforcement. In addition, the lid 36, which is a separate component, can be made smaller, and the installation of attached devices is also facilitated by increasing the closing portion of the case 31, making the device smaller, lighter, and less expensive. can be provided to

Furthermore, when the integrated frame 30 is inserted into the case 31 and opened by blowing air, the case 31 can easily be completely opened because there is nothing inside the case 31 that obstructs the opening operation. Furthermore, since the bag-shaped charged filter 29 and the ground electrode 28 are overlapped, even if the aperture is not completely opened, the surface of the charged filter 29 on the ionization electrode 21 side and the ground can be connected as described above. An electric field is generated between the electrodes 28, but since there is almost no gap between the charged filter 29 and the ground electrode 28, an electric field close to a completely open area can be formed inside the charged filter 29. Therefore, it is possible to almost eliminate a decrease in dust collection efficiency.

In the above embodiment, the IF electric filter 29 is used as the main filter, but even when the main filter is uncharged, a high voltage is applied between the ground electrode 28 and the surface of the main filter, so it is somewhat concentrated. The dust effect is reduced but has the same effect.

Effects of the Invention As described above, according to the present invention, the frame, the main filter, and the outlet for the ground electrode can be made smaller, which increases the strength of the case, reduces the wall thickness, and reduces the need for reinforcing ribs. This makes it possible to make the lid, which is a separate part, smaller and lighter.

Furthermore, the increased closure area of the case increases the area to which accessory devices can be attached, allowing for proper placement, making the device smaller, lighter, and less expensive.

Also, attach the main filter to the frame and insert it into the case.
When opening into a bag shape by blowing air.

Even if some parts are incompletely opened, because the bag-shaped main filter and the ground electrode are overlapped, the electric field strength inside the main filter will be almost the same as when the main filter is completely opened, resulting in improved dust collection efficiency. can almost eliminate the decrease in

[Brief explanation of the drawing]

Figure 1 is a schematic configuration diagram of an electrostatic air cleaner showing an embodiment of the present invention, Figure 2 is a schematic configuration diagram of a conventional electrostatic air cleaner, and Figure 3 is the charged filter in Figure 2. FIG. 21... Iosidization electrode, 22... Counter electrode, 28.
...Ground electrode, 29...Charged filter, 30...Frame, 31...Case, 35...Outlet agent Yoshihiro MorimotoFigure 1 21--Ion and weight z2-・・Re cell electrolysis zq-conductivity 7. /L 31) ---19 bodies jl---case〃-1&gun q

Claims (1)

[Claims] 1. A frame body configured to be detachable in the direction intersecting the air flow is provided in the part of the case on the downstream side of the air flow from the ionization part consisting of the ionization electrode and the counter electrode, and this frame body has breathability and conductivity. A bag-shaped ground electrode that is flexible and has an opening facing the upstream side of the airflow, and a bag-shaped main filter that is inserted into this ground electrode are superimposed and attached to the case. , an outlet is provided through which the frame can be taken out together with the main filter and the ground electrode, and the depth of the outlet is smaller than the depth when the overlapping main filter and ground electrode are expanded within the case. An electrostatic air purifier characterized by the following: