JPH11577A - Electric dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive electric dust collector easy in assemblage. SOLUTION: Relating to the electric dust collector in which high voltage is impressed between a discharge electrode 4 and a discharged paired electrode 5 built in a frame body 3 freely attachably and detachably and dust contained in sending air is electrified to collect it, a discharge electrode attachment part 3a, a discharge paired electrode attachment part 3b and a power source attachment part 3c built in a high voltage unit 6 are provided on the frame body 3, and also a hole 3e or a recess 3d is provided between the discharge electrode attachment part 3a and the power source attachment part 3c and also between the discharge paired electrode attachment part 3b and the power source attachment part 3c, and a connection part 6a of the high voltage unit 6 is provided and this connection part 6a is inserted into the hole 3e or the recess 3d and the high voltage unit 6 is built into the frame body 3, thus the discharge electrode 4 and the high voltage unit 6 or the discharge paired electrode 5 and the high voltage unit 6 are connected. Thus, the assemblage becomes very easy and a cost of a high voltage lead wire can be saved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrostatic precipitator incorporated in an air purifier or an air conditioner for charging dust in the air and collecting the dust by electrostatic force.

[0002]

2. Description of the Related Art Conventionally, an electric dust collector of this type incorporates a discharge counter electrode and a discharge electrode in a frame formed of an insulating member such as plastic, and is detachably attached to an air conditioner or an air purifier to discharge on a minus side. A DC voltage of about 4 kilovolts was applied between the electrode and the positive discharge counter electrode.
Dust in the air sucked by the blower is a thing that is attracted and attracted to the discharge counter electrode when passing between the tip of the discharge electrode and the hole, and the power supply is provided near the discharge electrode and the discharge counter electrode. Was connected by a high voltage lead from the high voltage unit.

[0003]

In this prior art, the discharge electrode or the discharge counter electrode and the high voltage unit were connected by a high voltage lead wire, so that the assembly was troublesome.
In addition, the high-voltage lead wire has a commonly used voltage of 100.
There is a problem that it is more expensive than the V lead wire and the manufacturing cost is high.

[0004]

The present invention focuses on this point and solves the above-mentioned drawbacks. In particular, the present invention is applied to a structure in which a high voltage is applied between a discharge electrode and a discharge counter electrode which are removably incorporated in a frame body. In the electrostatic precipitator for charging and collecting dust contained in the blast air, the frame has a discharge electrode mounting part, a discharge counter electrode mounting part, and a power supply mounting part incorporating a high voltage unit, and the discharge electrode mounting. A hole or a notch is provided between the unit and the power supply mounting unit and the discharge counter electrode mounting unit and the power supply mounting unit, and a connecting portion of the high voltage unit is protruded, and the connecting portion is inserted into the hole or the notch to insert the high voltage unit. The discharge electrode and the high-voltage unit or the discharge counter electrode and the high-voltage unit are electrically connected to each other by being incorporated in the frame.

[0005]

[Function] Hole 3e and notch 3 of power supply mounting portion 3c of frame 3
d, insert the connecting portion 6a, set the high-voltage unit 6 to the claw of the frame 3, set the discharge counter electrode 5 from below along the groove 3i of the discharge counter electrode mounting portion 3b, and discharge the electrode from the front. 4 is fixed with the left and right screws 4d, the upper and lower claws are aligned from above, the lid 3h is pressed, the lid 3h is fitted to the frame 3, and the lead wire 6b is connected to the control board to complete the assembly. Complete.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. 1 to 3. Reference numeral 1 denotes an electric precipitator incorporated in a part of a ventilation path of an air conditioner 2; In a frame 3 made of plastic or the like, a discharge electrode 4 connected to the minus side of a DC power supply of about 4000 volts and a discharge counter electrode 5 connected to the plus side are provided. The frame body 3 includes a discharge electrode mounting portion 3a and a discharge counter electrode mounting portion 3b on the left and right, respectively, and a discharge electrode 4 and a discharge counter electrode 5 are mounted one by one.
On the side of b, a power supply mounting portion 3c for mounting a high-voltage unit 6 for supplying power to the discharge electrode 4 and the discharge counter electrode 5 is provided.

A notch 3d is provided between the discharge electrode mounting portion 3a and the power supply mounting portion 3c, and a hole 3e is provided between the discharge counter electrode mounting portion 3b and the power supply mounting portion 3c. When the protruding connection portion 6a is inserted by assembling, the copper contact provided in the connection portion 6a is brought into direct contact with the discharge electrode 4 or the discharge counter electrode 5 to conduct electricity.

Further, between the left and right discharge electrode mounting portions 3a and the discharge counter electrode mounting portion 3b, a minus side connecting piece 3f and a positive side connecting piece 3g made of copper tongues are provided, and the left and right discharging electrodes 3 and the discharge counter electrode 4 are provided. Are electrically connected. In addition, the front surface of the frame 3 is covered so as not to touch the discharge electrode 4 or the discharge electrode 5 directly when cleaning or the like, and to avoid electric shock or to cut off the hand at the end face of the aluminum discharge electrode 4 or the discharge electrode 5. 3h is provided.

The discharge electrode 4 forms a parallel discharge electrode substrate 4b at the center of an aluminum frame 4a having a thickness of about 1 mm, and has a pointed discharge needle 4c from the discharge electrode substrate 4b toward the leeward side. It is attached to the discharge electrode mounting portion 3a by two screws 4d on the left and right. The discharge counter electrode 5 is provided with a plurality of holes 5a having a diameter of about 17 mm in the center of an aluminum flat plate having a thickness of about 1 mm, and covering the end 5b of the plate with an insulating member such as plastic. Are formed to form a handle 5c, which is slid from below into a groove 3i provided on the left and right sides of the discharge counter electrode mounting portion 3b so as to be easily attached and detached.
The discharge counter electrode 5 is exposed at a part 5d of the end 5b, and directly contacts the connection 6a of the high voltage unit 6.

The tip of the discharge needle 4c of the discharge electrode 4 is 1 mm from the center of the hole 5a of the discharge counter electrode 5 at the time of attachment.
It is set so as to be located 5 mm windward (2 mm windward in this embodiment). Thereby, the discharge counter electrode 5
The plate portion 5d can also serve as a dust collecting portion, and only the discharge counter electrode 5 can be easily detached. The high-voltage unit 6 internally has a transformer, a voltage doubler circuit, etc., and boosts DC 12V supplied from a control board (not shown) via a lead wire 6b to generate DC 4000V at a connection portion 6a. It is.

Reference numeral 3j denotes mounting feet protruding to the leeward side of the frame body 3, which are inserted between the fins 7a or the heat exchange pipes 7b on the front surface of the heat exchanger 7 bent in a substantially U-shape from the center. It is something that can be done. The air conditioner 2 has an outer surface formed by a casing 8 on a rear surface and a front panel 9 on a front surface,
An air inlet 10 is provided on the front and upper surfaces of the front panel 9, and a pre-filter 11 is provided along the back of the air inlet 10 to remove relatively large dust in the air. Downstream of the pre-filter 11, the heat exchanger 7 is provided, and the electric precipitator 1 is provided above the pre-filter 11 and the heat exchanger 7.

Reference numeral 12 denotes a drain plate for receiving the dew water generated in the heat exchanger 7 during the cooling operation. The wall on the back side also serves as a rectifying plate of the blower fan 13. The blower fan 13 is a cross-flow fan provided between the heat exchanger 7 and the casing 8, and sucks room air from a suction port 10 to cut the front panel 9.
The air is blown out from a blow-out port 14 provided at a lower portion. The blow-out port 14 is provided with upper and lower wind direction plates 15 and left and right wind direction plates 16 for changing the direction of the blown air according to the user's preference.

In operation, when the air conditioner 2 is operated, the blower fan 13 and the compressor (not shown) start to operate, and the indoor air sucked through the suction port 10 is compared by the pre-filter 11. After the very large dust is removed, some of the air goes directly to the heat exchanger 7, and some of the air passes through the electric precipitator 1 and is heat exchanged by the heat exchanger 7 to blow the air blower fan 13. The air is blown into the room from the air outlet 14 via the air outlet.

At this time, if an operation device (not shown) of the electrostatic precipitator 1 is operated, a distance of about 4
When a DC voltage of 000 volts is applied, this causes a small amount of invisible tobacco smoke and invisible dust in the air to pass between the discharge needle 4c of the discharge electrode 4 and the edge of the hole 5a of the discharge counter electrode 5. After passing through the hole 5a, the negative electrode is attracted to and attracted to the plate on the back surface of the discharge counter electrode 5 which is charged to the positive side, and dust in the air is removed to be relatively clean. .

The assembling of the dust collecting device will be described. The connection portion 6 is formed in the hole 3e and the notch 3d of the power supply mounting portion 3c of the frame 3.
a, and set the high-voltage unit 6 so as to match the claws of the frame 3.
Inserting the discharge electrode 4 from the front with the left and right screws 4d, aligning the upper and lower claws from above, and pressing the lid 3h, the lid 3h is fitted to the frame 3. Then, when the lead wire 6b is connected to the control board, the assembly is completed. As described above, since the connection between the high voltage unit 6 and the discharge electrode 4 and the discharge counter electrode 5 can be directly connected without using a high voltage lead, the assembly is extremely simple and the cost of the high voltage lead can be reduced.

[0016]

As described above, according to the present invention, a high voltage is applied between the discharge electrode and the discharge counter electrode, which are detachably incorporated in the frame, to charge and collect dust contained in the blast air. In the dust collector, the frame body includes a discharge electrode mounting portion, a discharge counter electrode mounting portion, and a power supply mounting portion incorporating a high voltage unit, and includes a discharge electrode mounting portion, a power supply mounting portion, and a discharge counter electrode mounting portion and a power supply mounting portion. A hole or a notch is provided between them, and a connecting portion of the high-voltage unit is made to protrude, and this discharging portion is inserted into the hole or the notch and the high-voltage unit is assembled into a frame, so that the discharge electrode and the high-voltage unit or the discharge electrode Since the high-voltage unit is made conductive, the assembly becomes extremely simple and the cost of the high-voltage lead can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the main part.

FIG. 3 is a side sectional view showing a simplified structure of the relevant part.

[Explanation of symbols]

 3 Frame 4 Discharge electrode 5 Discharge counter electrode 6 High voltage unit

Claims (1)

[Claims] 1. An electric dust collecting apparatus for applying a high voltage between a discharge electrode and a discharge counter electrode detachably incorporated in a frame to charge and collect dust contained in air to be blown, wherein the frame is used. The power supply mounting part incorporates a discharge electrode mounting part, a discharge counter electrode mounting part and a high voltage unit, and a hole or a notch is provided between the discharge electrode mounting part and the power supply mounting part and the discharge counter electrode mounting part and the power supply mounting part. The connecting portion of the high voltage unit is protruded, and the connecting portion is inserted into the hole or the notch and the high voltage unit is assembled into the frame, whereby the discharge electrode and the high voltage unit or the discharge counter electrode and the high voltage unit are electrically connected. Electric dust collector.