JPH029457A - Air cleaner - Google Patents

Abstract

PURPOSE:To make maintenance services easy and allow superior dust collection performance to be maintained by causing a spark discharge to be generated mutually by electric discharge rods through lever operation when a normal electric discharge is permitted usually and the electric discharge rod is fouled. CONSTITUTION:If dirt contaminates the tip of an electric discharge rod 18 and subsequently, electric discharge function deteriorates with a decrease in dust collection performance, a lever 21 is slid to separate part of an electric discharge plate 19 from a high-voltage output terminal 22. This results in the short-circuiting of said part of the electric discharge plate 19 to an earthing element 20. If a high voltage is applied under this state, an electric discharge occurs between the electrode discharge rods 18 because a needle-like protrusion which allows an electric discharge to occur easily is formed both on the positive and negative sides. In this case, the electric spark occurring between the needles is different from the normal radial discharge, and burns grease sticking to the tip of the electrode discharge rod 18.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electrostatic precipitator type air cleaner.

BACKGROUND OF THE INVENTION Conventionally, this type of purifier has been equipped with a discharge generator 2 that charges the air sucked from an intake port 1, as shown in FIG. It had a negative plate 4 for grounding.

In this case, high pressure is applied between the discharge needle 3 and the negative plate 4, and discharge occurs between them, giving an electric charge to the dust in the suction air passing therethrough.

A part of the charged dust is attracted to the negative plate 4 by the force of attracting electric charges, while the other part is attracted to the charged filter 6 provided behind the discharge device 2. Then, dust is filtered out and clean air is exhausted. 6
is a fan, and 7 is an exhaust port.

Problems to be Solved by the Invention In the above-mentioned configuration, if cigarette smoke or the like gradually accumulates at the tip of the discharge needle 3, the discharge to the negative plate 4 decreases, and the dust collection performance also decreases. Therefore, maintenance such as cleaning is required, but the discharge device 2 must be made removable, safety against high pressure must be considered, and cleaning the buttons and sharp needles is not easy to do. There was also a risk of deformation. The same applies when a discharge wire is used instead of a discharge needle, and there are problems such as the discharge performance deteriorates due to the adhesion of resin and the discharge wire breaks during cleaning.

The present invention solves this problem by providing an air cleaner that is easy to maintain and has a function of removing dirt from the discharge needle without the need to attach or detach the device.

Means for Solving the Problems In order to achieve the above object, the present invention provides two or more centering plates each having a discharge needle as a discharge device, and further includes a grounding body that receives discharge from the discharge plate, and a part of the discharge plate. Directly connected to
The sliding discharge plate is normally short-circuited to the output terminal of the high-voltage generation circuit, and when the lever slides, it is located away from the output terminal and short-circuited to the ground plate. It is set to .

Function With the above configuration, normal discharge is normally performed, and if the discharge needle becomes dirty, spark discharge is generated between the discharge needles by operating the lever, so the resin at the tip of the needle is efficiently burned off. , excellent discharge performance can be recovered. Therefore, it is possible to provide a high-performance air cleaner that can maintain discharge performance with simple operation, is easy to maintain, and maintains excellent waste collection performance.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In FIGS. 1 to 4, reference numeral 11 denotes an air purifier main body, which incorporates a fan 13 driven by a motor 12 and a high pressure generation circuit 14 that generates high pressure.

A discharge device 16 is disposed inside the intake port 15, and a charged filter 17 is disposed behind it.

The discharge device 16 is constructed by arranging several discharge plates 19 each having a plurality of discharge needles 18 protruding from one side of a long plate and several earth plates 2o that receive discharge.

Among the discharge plates 19, the two central plates are connected to a lever 21 and are displaced by sliding of the lever 21. however,
Insulation between the lever 21 and the discharge plate 19 is ensured.

One end of the discharge plate 19 is all in contact with the output terminal 22 of the high voltage generation circuit 14, but the discharge plate 19 is directly connected to the lever 21.
9 is separated from the output terminal 22 when the lever slides, comes into contact with the ground plate 20, and is electrically short-circuited. 23 is an exhaust port.

In the above configuration, during operation of the main body, high voltage is applied to the discharge device 16, and from the discharge needle 18 of the discharge plate 1e to the ground plate 2.
A discharge occurs at 0.

When the dust in the air sucked in by the fan 13 passes through this discharge, it is given an electric charge.

When the charged dust passes through the charged filter 17, it is attracted by the force of attraction of the charges, and only clean air is discharged from the fan 13 and the exhaust port 23.

At this time, tobacco tar and the like will also adhere to the tip of the discharge needle 18, causing a reduction in discharge performance.

Dirt accumulates on the tip of the discharge needle 18, reducing discharge performance.
If the dust collection performance deteriorates, slide the lever 21 to separate a part of the discharge plate 1e from the high voltage output terminal 22, and close the ground body 2o.
and short circuit. If high pressure is applied in this state, the positive side
Since both the negative side and the discharge needle 18 have needle-like protrusions that are most likely to cause discharge, the discharge needles 18 discharge together (FIG. 4).

In this case, unlike a normal radial discharge, a spark state occurs between the needles, and the resin at the tip of the discharge needle 18 is burned off.

If the lever 21 is returned to its original position, the normal discharge state will be established (the third
), the tip of the discharge needle 18 is clean and the earth plate 20 is
The radial discharge resumes, demonstrating excellent dust collection performance.

Although the lever 21 projects outside the main body through the opening 24, the opening 24 itself is covered by the handle 26 of the lever 21 to maintain insulation.

Effects of the Invention As described above, according to the present invention, the discharge needles that normally produce a normal discharge state can be operated from the outside to cause a spark discharge between the discharge needles, thereby efficiently reducing the discharge needle tip. It is possible to burn off dirt such as dirt and leave it in a clean state, so we provide a high-performance air purifier that is easy to maintain and maintain excellent discharge performance and high dust collection performance with simple external operation. can do.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a horizontal sectional view thereof, Fig. 3 is a vertical sectional view thereof, Fig. 4 is a partial sectional view thereof, and Fig. 5 is a sectional view of the conventional example. It is. 14... High voltage generation circuit, 16... Discharge device, 18... Discharge plate, 19... Discharge needle, 20... Earth plate. , 21... Lever, 22... Output terminal. Name of agent: Patent attorney Toshio Nakao and one other person

Claims (1)

[Claims] The discharge device includes a discharge device installed in an air passage and a high voltage generation circuit that applies high voltage to the discharge device. It has a grounding body that receives electric discharge, and a lever that is directly connected to at least a part of the plurality of discharge plates and slides the discharge plates, and the sliding discharge plates are normally connected to the output terminal of the high voltage generation circuit. The air purifier is set in a position where it is short-circuited to the earth body and away from the above output terminal when the lever slides.