JP2956337B2 - Air purifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric dust-collecting type air cleaning apparatus for removing dust in the air by a dust collecting element to which a high voltage is applied.

[0002]

2. Description of the Related Art Conventionally, an electrostatic precipitator has an electric precipitating element for removing dust in a ventilation flow from a blower, and a high voltage application for applying a high voltage for dust collection to the electric precipitating element. Device, and the contact of the high-voltage applying device,
By contacting the terminal plate of the electrostatic precipitating element,
Both are electrically connected.

[0003] Further, usually, the electric dust collecting element is pulled out from the main body of the electric dust collecting device, and maintenance such as processing of dust collected in the electric dust collecting element is performed.

[0004]

By the way, in the above-mentioned ventilation flow, there is bypass air which bypasses the electrostatic precipitating element in the main body of the apparatus. There is a problem that the contact and the insulator are contaminated by being applied to the insulator portion to be held.

[0005] Thus, the contacts and the insulator is fouled, creeping discharge cause a fire there is a problem that will have <br/> and tends to occur. Therefore, an object of the present invention is to provide an air cleaning device that can prevent contamination of contacts and insulators and creeping discharge caused by the contamination.

[0006]

According to a first aspect of the present invention, there is provided an air purifying apparatus for collecting dust in a ventilation flow, and a contact for supplying a voltage to the electric dust collecting element. Insulators and insulators that hold them , and
An element housing frame for housing the electric dust collecting element , a casing housing the element housing frame and having a lid that opens and closes to put the element housing frame in and out, and a contactor and an insulator provided in the element housing frame; A cover movable at least between a set position covering at least the upstream side in the ventilation flow direction and a retracted position allowing insertion and removal of the electrostatic precipitating element from the element storage frame; and setting the cover in conjunction with the opening and closing operation of the lid. And a cover operation unit for moving the cover operation unit between the retracted position and the retracted position.

[0007]

According to the structure of the first aspect of the present invention, the cover provided in the element housing frame covers at least the upstream side in the ventilation flow direction of the contactor and the insulator, thereby bypassing the inside of the element. It is possible to prevent bypass air passing through the inside of the element storage frame from being applied to the contactor and the insulator. Therefore, contamination of the contact and the insulator can be prevented.

The cover operating unit moves the cover from a set position covering at least the upstream side in the ventilation flow direction of the contactor and the insulator in conjunction with the opening / closing operation of the lid for taking the element housing frame in and out. The cover can be automatically moved to a required position with the opening and closing of the lid because the cover is moved to the retreat position where the electric dust collecting element is allowed to be taken in and out. Therefore, you do not forget to set the cover. In addition, there is no need to retreat the cover when the electric dust collecting element is taken in and out of the element housing frame.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 2 is a schematic configuration diagram of an air cleaning device according to one embodiment of the present invention. Referring to FIG. 1, this electric dust collector includes a casing 1 attached to a ceiling C, a fan 7
An element storage frame 3 that houses an electrostatic precipitating element 2 that captures dust in the ventilation flow F and that can be moved in and out of an entrance on the lower surface of the casing 1, and that is rotatably provided on the lower surface of the casing 1. And a lid 5 for opening and closing the entrance. In this electric dust collecting apparatus, when performing maintenance on the electric dust collecting element 2, the lid 5 is opened, the element housing frame 3 is lowered and pulled out of the casing 1, and then the electric dust is collected from the element housing frame 3. The element 2 is pulled out in the horizontal direction.

Referring to FIG. 1 in which the element housing frame 3 of FIG. 2 is viewed from the direction A, the electrostatic precipitating element 2 includes a plurality of ionizing electrode wires 21 and a counter electrode plate (not shown) in a box. The holes 2 are alternately arranged and formed in the side plate of the box.
From 0b, air is taken in. In the element housing frame 3, the electric dust collecting element 2 having a pair of end face plates 2a, a contact 4a for contacting the end face plate 2a and supplying a voltage to the electric dust collecting element 2, and a contact 4a To avoid interference between the end plate 2a and the insulator 4b that holds the element 4 in the element housing frame 3, the set position (indicated by a two-dot chain line in FIG. 1) that covers the upstream side of the contact 4a and the insulator 4b in the ventilation flow direction. A plate-shaped cover 6 that is movable between a retracted position (indicated by a broken line in FIG. 1) that allows the electric dust collecting element 2 to be taken in and out of the element housing frame 3 is housed.

The cover 6 includes an element storage frame 3.
A cover operating unit 7 is attached, which is formed by a rod that penetrates the lower surface of the cover 5 and contacts the lid 5 in the closed state. The cover operation unit 7 pushes up the cover 6 to the set position when the cover 5 is closed, and allows the cover 6 to descend to the retracted position by its own weight when the cover 5 is open. Reference numeral 8 denotes a rotation stopper that comes into contact with the end surface of the electrostatic precipitating element 2 to prevent the electric precipitating element 2 from being unnecessarily dropped from the element storage frame 3.

According to this embodiment, the element storage frame 3
The cover 6 provided in the inside covers the upstream side of the contact 4a and the insulator 4b in the ventilation flow direction, so that bypass air passing through the element storage frame 3 by-passing the inside of the electrostatic precipitating element 2 is contacted. It can be prevented from hitting the insulator 4a and the insulator 4b. Therefore, the contact 4a and the insulator 4b can be prevented from being stained. In addition, generation of creeping discharge that causes a fire can be prevented by preventing the above-described contamination.

The cover 6 can be automatically moved to a required position by the cover operation unit 7 when the cover 5 for opening and closing the element housing frame 3 is opened and closed. There is no need to forget, and the work of retracting the cover 6 when the electric dust collecting element 2 is taken in and out of the element storage frame 3 is unnecessary, and the workability of the maintenance of the electric dust collecting element 2 is good.

FIGS. 3 and 4 show another embodiment. Referring to these figures, this embodiment is different from the embodiment of FIG. 1 in that the cover 6 moves in the embodiment of FIG. 1 between its set position and the retracted position by vertical movement. On the other hand, in this embodiment, the cover 6 is moved between the set position and the retracted position by turning around the vertical rotation shaft 7a. In this embodiment, the cover operation unit 7 includes the rotation shaft 7 a rotatably supported by the element housing frame 3, one end attached to the rotation shaft 7 a, and the other end attached to the element housing frame 3. And a torsion coil spring 7b for urging the element storage frame 6 to the retracted position. The cover 6 is attached to the casing 1 and comes into contact with the cover 6 when the element storage frame 3 is stored in the casing 1 to resist the torsion coil spring 7b. To the set position. According to this embodiment, the same operation and effect as those of the embodiment of FIG. 1 can be obtained.

In the above embodiment, the cover 6 is
A portion other than the upstream side of the contact 4a and the insulator 4b in the ventilation flow direction, for example, a portion below the contact 4a and the insulator 4b may be covered, and other various design changes may be made without changing the gist of the present invention. Can be applied.

[0016]

As described above, according to the air purifying apparatus of the present invention, the cover can prevent the contact air and the insulator from being exposed to the bypass air.
It is possible to prevent dirt on contacts and insulators,
It is possible to prevent creeping discharge that causes a fire. In addition, the cover can be automatically moved to the required position by opening and closing the lid for taking in and out the element storage frame by the cover operation unit, so that the cover can be set without forgetting. The work of retracting the cover when the electric dust collecting element is taken in and out of the frame is unnecessary, and the workability of maintenance for the electric dust collecting element is good.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view of an element storage frame of an air cleaning device according to an embodiment of the present invention.

FIG. 2 is a schematic view showing the entire air cleaning device.

FIG. 3 is a cross-sectional view of an air cleaning device according to another embodiment.

FIG. 4 is a schematic perspective view of the cover and a cover operation unit, showing the operation of the cover.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 2 Electric dust collection element 3 Element storage frame 4a Contact 4b Insulator 5 Lid 6 Cover 7 Cover operation part F Ventilation flow

Claims (1)

(57) [Claims] An electric precipitating element (2) for trapping dust in a ventilation flow (F), a contact (4a) for supplying a voltage to the electric precipitating element (2), and an insulator (4b) for holding the contact. ) and electricity
Element storage frame (3) for storing the air dust element (2 )
A casing (1) in which the element storage frame (3) is stored, and a lid (5) that opens and closes to put the element storage frame (3) in and out; and a casing (1) provided in the element storage frame (3). The set position covering at least the upstream side in the ventilation flow direction of the contact (4a) and the insulator (4b) and the electrostatic precipitating element (2) from the element storage frame (3)
A cover (6) that can be moved between a retracted position that allows insertion and removal of the cover, and a cover operation unit that moves the cover (6) between the set position and the retracted position in conjunction with the opening and closing operation of the lid (5). (7) An air purifier characterized by comprising: