JPH06170278A - Air cleaner - Google Patents

Abstract

PURPOSE:To primarily scann by an air cleaner capable of exchanging the electric filter. CONSTITUTION:The device is provided with a freely openabe and closeabe case 1, a supporting part 4 having an insert part 5 provided with a prescribed spacing in the case inside, two electrode sheets 6, 7 provided in the case, electrode parts, 6a, 7a being alternately confronted by laminating these sheets louvered with the prescribed spacing on each electrode sheet and being respectively inserted and held at the insert part of the supporting part, and an electret filter convering the electrode part being formed into a wavy form and being held with a supporting part and being away with the prescribed spacing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier incorporated in, for example, an air conditioner.

[0002]

2. Description of the Related Art Recently, in order to remove fine dust from the indoor air circulated by an air conditioner, an air purifier has been incorporated into the air conditioner. These air cleaners have a case, in which an electric field forming electrode and a counter electrode are provided at a predetermined distance from each other and an electret filter is housed in the electret filter. By applying an electric field, the dust charged by the charging unit is collected.

By the way, in the conventional air cleaner,
The electric field forming electrode and the counter electrode, which are formed one by one, are assembled and fixed in the case, and then the electret filter is similarly fixed and provided in the case.

Therefore, if the above-mentioned air purifier is used for a predetermined period of time and dust of a predetermined amount or more adheres to the electret filter, the air cleaner must be replaced as a whole, that is, the case must be replaced. An air cleaner having an electrode and an electret filter is more expensive than a structure having only a filter, so that the economical burden on the user may increase.

[0005]

As described above, the conventional air purifier does not have a structure in which only the electret filter can be replaced, and the entire structure has to be replaced at the time of maintenance. There was a big burden on The.

The present invention has been made under the above circumstances, and an object thereof is to provide an air cleaner in which only the electret filter can be replaced easily and safely during maintenance.

[0007]

A first aspect of the present invention has two electrode sheets, each electrode sheet having a plurality of electrode portions cut and raised at a predetermined interval. The sheet is laminated so that the electrode portions are alternately opposed to each other and each electrode portion is covered with an electret filter bent in a wave shape.

A second aspect of the present invention is a case that can be opened and closed, a support portion having insertion portions provided inside the case at predetermined intervals, and two electrodes provided in the case. The sheet and each electrode sheet are cut and raised at predetermined intervals.
The electrode portions which are alternately opposed to each other by being stacked and are inserted and held in the insertion portions of the supporting portions, and the electrode portions which are bent in a corrugated shape and are held by the supporting portions and separated at a predetermined interval. And an electret filter.

[0009]

According to the first and second aspects of the invention, the electret filter is provided so as to cover the electrode portions formed on the respective electrode sheets, so that only the electret filter can be replaced during maintenance.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The air purifier shown in FIG. 1 includes a case 1. The case 1 is composed of a main body frame portion 1a and a lid frame portion 1b connected to one side of the main body frame portion 1a by a hinge portion 2 so as to be openable and closable. A handle 3 is provided on the outer surface of the other side of the main body frame portion 1a.

Each of the frame portions 1a and 1b has an L-shaped cross section, and a plurality of substantially triangular support portions 4 are provided on the upper surfaces of the horizontal portions on both sides of the main body frame portion 1a. The protrusions are provided at predetermined intervals and correspondingly in the width direction. Each support portion 4 is formed with a slit-shaped insertion portion 5 opened at the upper end.

In the case 1, two electrode sheets 6,
7 are stacked and accommodated. The electrode sheets 6 and 7 are made of an electrically insulating synthetic resin sheet such as polypropylene having a substantially rectangular shape. In each sheet, a plurality of electrode portions 6a, 7a are cut and raised in the longitudinal direction at a pitch twice the pitch of the supporting portion 4 and over substantially the entire length in the width direction. As a result, the portions where the electrode portions 6a, 7a of the respective sheets 6, 7 are cut and raised are openings 6b, 7b. Further, notches 6c and 7c are formed at one end of each sheet 6 and 7 in the longitudinal direction at different ends in the width direction.

On one side surface of each of the electrode portions 6a and 7a, FIG.
As shown in (a), conductive layers 8 and 9 are provided over substantially the entire length, for example, by silk-printing a conductive paint. One end of each conductive layer 8 and 9 is connected to each electrode sheet 6,
7 is electrically connected to the power supply layers 8a and 9a also provided by silk printing or the like over the entire length of the upper surface on one side in the width direction. One ends of the power feeding layers 8a and 9a are L-shaped.

Feeding layer 8 of the pair of electrode sheets 6 and 7
The positions of a and 9a are reversed in the width direction. The electrode portions 6a and 7a and the power feeding layers 8a and 9a of the electrode sheets 6 and 7 are covered and insulated by an electrically insulating covering sheet 11 such as polypropylene as shown in FIG. 3 (a). ing. 1 shows the electrode sheets 6 and 7 with the covering sheet 11 removed.

The electrode sheets 6 and 7 having the above-described structure are housed in a laminated manner on the main body frame portion 1a. That is, first, the one electrode sheet 6 is housed in the main body frame portion 1a. Thereby, both ends of the plurality of electrode portions 6a formed on the electrode sheet 6 are inserted and held in the insertion portions 5 of the alternate support portions 4 on both upper surfaces of the main body frame portion 1a. You can

Next, by stacking the other electrode sheet 7 on the one electrode sheet 6 and accommodating it in the main body frame portion 1a, both ends in the width direction of the electrode portion 7a of the electrode sheet 7 will be described. The portion can be inserted and held in the insertion portion 5 of the remaining support portion 4, and the electrode portion 6a of the electrode sheet 6 held (downward) from the opening portion 7b of the electrode sheet 7 first. Protrudes. Therefore, the electrode portions 6a and 7a formed on the pair of electrode sheets 6 and 7 are opposed to each other at the same pitch P as the supporting portion 4 shown in FIGS. 3B and 4.

As shown in FIG. 2, the electrode sheets 6 and 7 are provided with notches 6c and 7c on a tongue piece 10 projecting from the inner surface of the main body frame portion 1a in the longitudinal direction. Positioning is achieved by engaging them.

When the pair of electrode sheets 6 and 7 are housed in the main body frame portion 1a, the L-shaped end portions of the power feeding layers 8a and 9a formed on the electrode sheets 6 and 7 are the above-mentioned. Body frame
A pair of terminal portions 12 provided on one side in the longitudinal direction of the frame portion 1a.
Electrically connected to. One terminal portion 12 is connected to the positive side of a DC high voltage power source (not shown), and the other terminal portion 12 is grounded. Therefore, when power is supplied from the pair of terminal portions 12 to the conductive layers 8 and 9 formed on the electrode portions 6a and 7a of the electrode sheets 6 and 7, an electric field is generated between the opposing electrode portions 6a and 7a. You can do it.

The pair of electrode sheets 6 and 7 housed in the main body frame portion 1a are covered with an electret filter 13. That is, the electret filter 13 is formed by bending a charging material made of a nonwoven fabric such as PP (polypropylene) into a wave shape having alternating peaks 13a and valleys 13b, as shown in FIG. As shown, the inner surface side of the mountain portion 13a is joined to the support portion 4 and held. As a result, the valley portion 13b is formed in the adjacent electrode portion 6
Since it intervenes between a and 7a, the opposing electrode portions 6a and 7a
If an electric field is generated between a, the electric field can be applied to the electret filter 13.

As described above, the main body frame portion 1 of the case 1 is
When the pair of electrode sheets 6 and 7 and the electret filter 13 are accommodated in a, they are held in the case 1 by closing the lid frame portion 1b. The case 1 is arranged on the downstream side of a charging unit (not shown) that applies an electric charge to dust, with the electret filter 13 facing the upstream side.

According to the air cleaner having such a structure, when a voltage is applied to the opposing electrode portions 6a, 7a of the pair of electrode sheets 6, 7, the conductive layers 8 of the electrode portions 6a, 7a,
An electric field is generated between 9 and the electric field is applied to the electret filter 13. As a result, when, for example, room air containing dust passes through the electret filter 13, the dust contained in the room air is captured by the electret filter 13.

When the electret filter 13 is used for a predetermined period of time, dust is accumulated, and when the air purifier is maintained, if the case 1 is removed from a predetermined mounting position, its lid frame is removed. Open Part 1b. As a result, the electret filter 13 that is simply held by engaging the mountain portion 13a with the support portion 4 of the main body frame portion 1a can be easily removed, so that the electret filter 13 can be easily replaced. it can. That is, since it is not necessary to replace the entire air purifier as in the conventional case, the economical burden on the user can be reduced.

Electrode portion 6 formed on each electrode sheet 6 and 7
Both ends of a and 7a are inserted and held in the insertion portion 5 of the support portion 4. Therefore, even if the electrode portions 6a and 7a are thin, their strength hardly poses a problem. That is, since the electrode portions 6a and 7a can be made thin, it is possible to reduce the pressure loss of the room air flowing through the air cleaner.

[0024]

As described above, the first invention has two electrode sheets, and a plurality of electrode portions are cut and raised at predetermined intervals in each electrode sheet. The electrode sheet is laminated so that the electrode portions are alternately opposed to each other, and each electrode portion is covered with an electret filter bent in a wave shape.

A second aspect of the present invention is a case that can be opened and closed, a support portion having insertion portions provided inside the case at predetermined intervals, and two electrodes provided in the case. The sheet and each electrode sheet are cut and raised at predetermined intervals.
The electrode portions which are alternately opposed to each other by being stacked and are inserted and held in the insertion portions of the supporting portions, and the electrode portions which are bent in a corrugated shape and are held by the supporting portions and separated at a predetermined interval. And an electret filter.

Therefore, according to the first and second aspects of the present invention, the electret filter can be easily attached and detached, so that only the electret filter can be easily replaced at the time of maintenance.

Further, according to the second aspect of the invention, since the electret filter can be engaged with and held by the supporting portion formed on the case, the holding state is ensured, and the electrode is provided on the insertion portion formed on the supporting portion. By inserting and holding the portion, strength can be obtained without increasing the thickness of the electrode portion, so that the pressure loss due to the electrode portion can be reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing the overall configuration of an embodiment of the present invention.

FIG. 2 is a plan view showing a part of a state in which two electrode sheets are stacked and housed in the same case.

3A is an enlarged cross-sectional view of the electrode portion, and FIG. 3B is a cross-sectional view showing a state in which the electrode portion is covered with an electret filter.

FIG. 4 is a perspective view showing a part of a state where the electrode portion is held by the support portion.

[Explanation of symbols]

1 ... Case, 4 ... Support part, 5 ... Insertion part, 6, 7 ... Electrode sheet, 6a, 7a ... Electrode part, 13 ... Electret filter.

Claims (2)

[Claims] 1. An electrode sheet having two sheets, a plurality of electrode portions being cut and raised at predetermined intervals in each electrode sheet, and these two sheet electrodes are laminated to form each electrode portion. The air cleaner is characterized in that the electrodes are alternately opposed to each other, and each electrode portion is covered with an electret filter bent in a wave shape. 2. A case which can be opened and closed, a support section having insertion sections provided at a predetermined interval inside the case, and two electrode sheets provided in the case. , Each electrode sheet
Electrode portions that are cut and raised at predetermined intervals and alternately face each other by stacking these electrode sheets, and are inserted and held in the insertion portions of the support portions, and are bent in a corrugated shape and held by the support portions. And an electret filter for covering the electrode portions separated by a predetermined distance.