KR20160138931A - Ionizer - Google Patents

Abstract

The present invention relates to a blower type ionizer having a cleaning unit. The objective of the present invention is to rotate a brush by operation of a motor to automatically clean discharge electrodes on which pollutant is attached. To this end, a cleaning unit of a blower type ionizer comprises: a cleaning motor (510) installed in an air suction hole side of a fan casing (200) to be matched to a rotary center of a blowing fan (300); a brush body (520) inserting a central part into a rotary shaft (511) of the cleaning motor (510) to be integrally rotated and having sliding grooves (522L, 522R) faced with each other in the inner side of both end parts; a pair of brush heads (530L, 530R) inserting and arranging a rear end part into and in sliding grooves (522L, 522R) of the brush body (520) to be able to slide in a longitudinal direction, and having a brush (540) for brushing a discharge electrode (400) in a front end; and coil springs (550L, 550R) received and arranged in an inner part of the sliding grooves (522L, 522R) of the brush body (520) to elastically support the brush heads (530L, 530R) in order to pull the brush heads (530L, 530R) towards a central part.

Description

[0001] IONIZER WITH BURNING UNIT [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a blower type ionizer for forced convection of positive and negative ions generated by applying a high voltage to a discharge electrode, and more particularly to a discharge type ionizer capable of automatically cleaning a discharge electrode To " a blow type ionizer with a cleaning unit ".

Generally, in the LCD, PDP and semiconductor manufacturing processes, fine dust adheres to the product due to the generation of static electricity or destroys the pattern due to electrostatic discharge, which is a major cause of lowering the feeding of the product and raising the manufacturing cost. Therefore, a blow type ionizer that generates ions by corona discharge is used as a static eliminator in order to remove static electricity in a semiconductor manufacturing process requiring high precision.

Conventional blow type Ionizer applies a direct current high voltage to a discharge electrode and generates a corona discharge at the end of a discharge electrode to ionize oxygen and nitrogen in ambient air to generate positive and negative ions. Then, the generated positive and negative ions are forcibly convected through the fan and blown to the object to be electrostatically removed to remove the static electricity.

However, in the case of such a blow type ionizer, since a high voltage is applied to the discharge electrode, it acts as an electrostatic precipitator, and there is a disadvantage that fine particles existing in the surrounding space adhere. Therefore, if the blow type ionizer is driven for a long time, corona discharge is weakened due to particles (metal fine particles, etc.) adhering to the discharge electrode, so that the number of positive / negative ion generation is reduced. In order to prevent this, there is a disadvantage that the discharge electrode needs to be cleaned once or twice a week from time to time in the field.

The present invention has been made to solve such a problem, SUMMARY OF THE INVENTION An object of the present invention is to provide a blow type ionizer having a cleaning unit capable of automatically cleaning discharge electrodes with contaminants by rotating the brush by driving a motor.

According to an aspect of the present invention, A fan casing in which a plurality of discharge electrodes for generating air ions through a corona discharge are symmetrically installed on a circumference of a predetermined radius; And a cleaning unit for cleaning the discharge electrode, the blown type ionizer comprising:

The cleaning unit comprising: A cleaning motor provided on the air suction port side of the fan casing so as to coincide with the rotation center of the blowing fan; a brush body rotatably integrated with a center portion of the rotary shaft of the cleaning motor and having sliding grooves opposed to each other, A pair of brush heads each having a rear end slidably disposed at both ends of the brush body so as to be slidable in the longitudinal direction thereof and having a brush for sweeping the discharge electrode at the front end thereof and a pair of brush heads respectively accommodated and disposed on the inner side of the sliding groove of the brush body, And a coil spring elastically supporting the heads so as to pull toward the central portion of the brush body; The brush head is drawn out in the longitudinal direction while the elastic force of the coil spring is being pulled out by the centrifugal force when the brush body is rotated by the cleaning motor to clean the discharge electrodes through the brush, And the rear end of the brush head is restored to be received in the sliding groove of the brush body by the resilient supporting force of the spring.

The present invention also provides And a locking protrusion is formed at a rear end of the brush head so that the end of the coil spring can be inserted and supported.

According to the " blow type ionizer having a cleaning unit " according to the present invention constructed as described above, The brush head is rotated in the longitudinal direction by rotating the brush motor by the driving of the cleaning motor so that the discharge electrodes with the contaminants are automatically cleaned through the brush. When the cleaning operation is completed and the cleaning motor is stopped, the rear end of the brush head is received in the sliding groove of the brush body by the elastic supporting force of the coil spring, so that the brush is separated from the discharge electrodes to generate air ions through corona discharge There is an advantage that it does not become obstacle.

Further, according to the "blow type ionizer with cleaning unit" according to the present invention, There is an advantage that the end portion of the coil spring is securely assembled to the rear end engaging jaw of the brush head.

1 is an exploded perspective view showing the internal structure of a blowing type ionizer according to the present invention.
2 is a perspective view showing a cleaning unit of a blow type ionizer according to the present invention.
3 is an exploded perspective view showing a cleaning unit according to the present invention.
4 is a cross-sectional view showing a coupling structure of a cleaning unit according to the present invention.
5 and 6 are schematic views showing the operating state of the cleaning unit according to the present invention.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a cleaning unit according to an embodiment of the present invention; FIG. 2 is a perspective view of a cleaning unit according to an embodiment of the present invention; FIG.

≪ Description of Constitution of Blow Type Ionizer According to the Present Invention &

1 and 2, the fan-type Ionizer according to the present invention includes a fan casing 200 having a blowing fan 300 installed at the center thereof, A plurality of discharge electrodes 400 arranged circumferentially symmetrically with each other, and a cleaning unit 500 for automatically cleaning the discharge electrodes 400.

A plurality of discharge electrodes 400 for generating air ions through a corona discharge are disposed on a circumferential surface of a predetermined radius on the outer circumference of the fan casing 200. The fan casing 200 is installed inside a metal square housing 100, And are arranged symmetrically with respect to each other. It is preferable that the plurality of discharge electrodes 400 are symmetrically arranged on the same plane.

The air blowing fan 300 is installed at the center of the fan casing 200 and forcibly conveys the air ions generated through the discharge electrode 400.

The cleaning unit 500 is for automatically cleaning the discharge electrodes 400 when the discharge performance is degraded by a predetermined period or by a foreign matter. In the embodiment of the present invention, the rear cover 110 covering the rear of the rectangular housing 100 As shown in Fig.

2 and 3, the cleaning unit 500 is provided on the side of the air inlet of the fan casing 200 (in the embodiment of the present invention, the rear lid 110) so as to coincide with the rotation center of the blowing fan 300, And a pair of sliding grooves 522L and 522R are integrally formed on the rotary shaft 511 of the cleaning motor 510. The sliding grooves 522L and 522R are integrally rotated, A body 520 and a sliding groove 522L and a sliding groove 522R of the brush body 520. The rear end of the body 520 is slidably disposed in the longitudinal direction and a brush 540 for sweeping the discharge electrodes 400 A pair of brush heads 530L and 530R and a coil spring 530L and 530R which are housed and disposed inside the sliding grooves 522L and 522R of the brush bodies 530L and 530R to elastically support the brush heads 530L and 530R, (550L) and (550R). Each of the constituent elements of the cleaning unit 500 will be described in more detail as follows.

First, the cleaning motor 510 is fixed to an inner upper portion of the rear lid 110 having an air inlet formed therein. The cleaning motor 510 is disposed at the same interval as the discharge electrodes 400 in correspondence with the rotational center of the blowing fan 300 Respectively. The driving of the cleaning motor 510 is preferably controlled separately from the driving of the blowing fan 300. That is, if it is determined in the control unit (not shown) that the cleaning motor 510 is driven for a predetermined period or the discharge performance is lower than a predetermined level, the cleaning motor 510 is preferably set to be driven for a certain period of time separately from the blowing fan 300.

As shown in FIGS. 3 and 4, the brush body 520 is formed with a coupling hole 521 at its center so as to be coupled to the rotary shaft 511 of the cleaning motor 510, and a sliding groove 522L) 522R are formed to be laterally opposed to each other in the longitudinal direction.

3 and 4, the pair of brush heads 530L and 530R are respectively accommodated in the sliding grooves 522L and 522R of the brush body 520 such that the rear end thereof is slidable in the longitudinal direction, Brushes 540 for sweeping the discharge electrodes 400 are respectively formed at the tips of these electrodes. These brush heads 530L and 530R extend about 8 to 10 mm from the sliding grooves 522L and 522R due to the centrifugal force when the brush body 520 rotates so that the tips of the brushes 540 are connected to the discharge electrodes 400). The brushes 540 preferably have a shape of a brush having a strength enough to shake dust adhered to the discharge electrode 400 and are preferably made of a PE material or a PPT material.

3 and 4, the coil springs 550L and 550R are accommodated in the inner side of the sliding grooves 522L and 522R of the brush body 520 to receive the brush heads 530L and 530R, And is elastically supported so as to be pulled toward the central portion of the body 520. In order to firmly arrange the coil springs 550L and 550R, a latching jaw 531 is formed at the rear end of the brush heads 530L and 530R so that the end portions of the coil springs 550L and 550R can be fitted and supported. .

Therefore, when the brush body 520 is rotated by the cleaning motor 510, the brush heads 530L and 530R are pulled out in the longitudinal direction while the elastic force of the coil springs 550L and 550R is being pulled by the centrifugal force, When the motor 510 is stopped, the rear end of the brush heads 530L and 530R is restored to be accommodated in the sliding grooves 522L and 522R of the brush body 520 by the elastic supporting force of the coil springs 550L and 550R do. This operation will be described in detail in the operation description.

≪ Description of Operation and Effect of Cleaning Unit of Blow Type Ionizer According to the Present Invention &

Next, a cleaning oil well operation and an operation effect of the blow type ionizer according to the present invention constructed as above will be described with reference to FIGS. 5 and 6. FIG.

5, if the cleaning motor is not driven, the rear ends of the brush heads 530L and 530R are slidably moved by the resilient supporting force of the coil springs 550L and 550R, And is accommodated in the grooves 522L and 522R as much as possible (see the arrow A direction in Fig. 5). Therefore, the brush 540 disposed at the end of the brush head 530L (530R) does not contact the discharge electrodes 400, thereby preventing generation of air ions through the corona discharge of the discharge electrodes 400. [

On the other hand, if it is determined that the discharge type ionizer has been driven for a long time in the control unit (not shown) or a considerable foreign substance is stuck to the discharge electrode 400 and the discharge performance is less than a certain level, the control unit controls the cleaning motor 510 of the cleaning unit 500, For a predetermined period of time. Therefore, when the brush body 520 is rotated by the cleaning motor 510, the brush heads 530L and 530R are pulled out in the longitudinal direction while the elastic forces of the coil springs 550L and 550R are being absorbed by the centrifugal force (See arrow B direction of FIG. As a result, the turning radius of the brushes 540 becomes large, and the foreign substances adhering to the discharge electrodes 400 are shaken while their tips rotate (see arrow R direction in FIG. 6).

When the cleaning operation of the discharge electrode 400 is performed for a predetermined time and then the driving of the cleaning motor 510 is stopped, the elastic force of the coil springs 550L and 550R causes the brush heads 530L ) 530R is received and restored to the sliding grooves 522L and 522R of the brush body 520 as much as possible.

As a result, by driving the cleaning motor 510, the brush heads 530L and 530R are rotated in the longitudinal direction while being rotated in the brush body 520, so that the discharge electrodes 400 to which the contaminants are attached are automatically . When the cleaning operation is completed and the driving of the cleaning motor 510 is stopped, the rear ends of the brush heads 530L and 530R are returned to the sliding grooves 522L and 522R of the brush body 520 by the coil springs 550L and 550R .

100 .. housing 110 .. rear cover 200 .. fan casing
300 .. ventilation fan 400 .. discharge electrode 500 .. cleaning unit
510 .. Cleaning motor 511 .. Rotation axis 520 .. Brush body
521 .. coupling holes 522L, 522R .. sliding grooves 530L, 530R .. brush head
531 .. Jaw 540 .. Brush 550L, 550R ... coil spring

Claims (2)

A fan casing (200) having a plurality of discharge electrodes (400) for generating air ions through a corona discharge and symmetrically installed on a circumference of a predetermined radius, A blowing fan 300 for forced convection of the air ions generated through the discharge electrode 400 and a cleaning unit 500 for cleaning the discharge electrode 400,
The cleaning unit (500) comprises:
A cleaning motor 510 installed on an air inlet side of the fan casing 200 so as to be aligned with a rotation center of the blowing fan 300,
A brush body 520 integrally rotating with the center portion of the rotary shaft 511 of the cleaning motor 510 and having sliding grooves 522L and 522R opposed to each other at both ends thereof,
The rear end of the brush body 520 is slidably received in the sliding grooves 522L and 522R of the brush body 520 and a brush 540 for sweeping the discharge electrode 400 is provided at the front end thereof. Heads 530L and 530R,
The brush body 520 includes a spring groove 522L and a coil spring 522R which are received in the inner side of the sliding groove 522L and 522R of the brush body 520 to elastically support the brush heads 530L and 530R to be pulled toward the center of the brush body 520, (550L) 550R;
The brush head 530L and the brush head 530R are pulled out in the longitudinal direction while the elastic force of the coil springs 550L and 550R is absorbed by the centrifugal force when the brush body 520 is rotated by the cleaning motor 510 The discharge electrodes 400 are cleaned through the brush 540 and the elastic force of the coil springs 550L and 550R at the time of stopping the cleaning motor 510 causes the rear ends of the brush heads 530L and 530R Is restored to be received in the sliding groove (522L) (522R) of the brush body (520). The method according to claim 1,
The blowing type ionizer with a cleaning unit is provided at the rear end of the brush heads 530L, 530R so that the ends of the coil springs 550L, 550R can be inserted and supported.

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