JP3747892B2 - Electric dust collector discharge mechanism and air conditioner using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a discharge mechanism of an electric dust collector and an air conditioner using the discharge mechanism.
[0002]
[Prior art]
As a discharge mechanism of a conventional electrostatic precipitator, there is a structure as disclosed in Japanese Patent Application Laid-Open No. 61-159053, but this is a cathode electrode plate bent in a U-shaped cross section, and is a thin discharge electrode. Since the electric wire is surrounded by a predetermined distance, when a high voltage of several thousand volts is applied to the discharge line, a thin electric wire is used to reduce the resistance of the passing air flow. There arises a problem that the discharge life is shortened by the discharge.
[0003]
Therefore, in order to solve this problem, as a discharge mechanism of the subsequent conventional electrostatic precipitator, as shown in FIG. 5, a discharge electrode plate is used instead of the discharge line. However, as shown in this figure, this structure has a closed frame structure for each negative / cathode electrode plate, and the negative / anode electrode plate 12, because of the dust collection efficiency of the discharge element and the space. 11. When the anode plates 11 are arranged between the cathode plates 12 to perform discharge, the anode plates 11 are electrically connected to each other. Since the anode contact plate 11b and the cathode contact plate 12b that electrically connect each other between the cathode electrode plates approach each other and discharge between the cathode contact plate 11b and the anode contact plate 11b due to this approach, The insulating member 9 must be inserted between the negative / anode contact plates, and the extra insulating member 9 is required.
[0004]
That is, the insulating member 9 has a U-shaped insulating support portion 9a for supporting the negative / anode contact plate, and the U-shaped insulating support portion 9a is an anode contact of the anode plate 11 as shown in FIG. Each of the plate 11b and the cathode contact plate 12b of the cathode electrode plate 12 is inserted and supported.
The insulating member 9 having the U-shaped insulating support portion 9 a is supported by the case body 20.
[0005]
Further, the side surface 12a of the cathode electrode plate 12 configured as described above and the side surface 11a of the anode electrode plate 11 disposed at the approximate center between the cathode electrode plates 12 are substantially orthogonal to the air flow direction. The foreign substances in the air passing therethrough are ionized and captured / removed by the discharge between the arranged electrode plates, and the air is cleaned and supplied to the room or the like.
[0006]
[Problems to be solved by the invention]
As described above, the discharge mechanism of the conventional electrostatic precipitator has a problem that the discharge life is shortened when the discharge wire is used.
[0007]
Even if a discharge electrode plate is used, an extra insulating member must be inserted to prevent discharge between the negative and positive electrode contact plates due to the dust collection efficiency of the discharge element and the space, resulting in an increase in the number of parts. There was a problem that the cost also became high.
[0008]
In addition, since the structure is such that the side surface of the discharge electrode plate is arranged so as to be substantially perpendicular to the air flow direction, when used for products with a long and narrow air passage, a large number of electrode plates are required. There was a problem of high costs.
[0009]
The present invention has been made to solve the above-described problems, and provides a discharge mechanism for an electrostatic precipitator having a long discharge life, a small number of components, and an air conditioner using the discharge mechanism. With the goal.
[0010]
Moreover, it aims at obtaining the discharge mechanism of an electric dust collector excellent in discharge interruption | blocking property, and an air conditioner using the same.
[0011]
[Means for Solving the Problems]
In the present invention, a substantially U-shaped cathode electrode plate portion formed by connecting cathode electrode plates facing each other via a cathode contact plate, and the cathode electrode plate portions of the cathode electrode plate portions facing each other. An anode electrode plate portion connected to one end of an anode electrode plate provided in the middle, and the U-shaped so that the anode contact plate faces the cathode contact plate The cathode electrode plate portion is arranged at a distance that does not discharge from the cathode electrode plate.
[0012]
The anode contact plate and the cathode contact plate have the same shape.
[0013]
Further, the cathode plates facing each other have the same shape.
[0014]
In addition, it is provided in the middle of the U-shaped cathode electrode plate part formed by connecting the cathode electrode plates facing each other via the cathode contact plate, and the cathode electrode plates facing each other. An anode electrode plate portion configured by connecting an anode contact plate to one end of the anode electrode plate, and a box for storing the anode electrode plate portion and the cathode electrode plate portion, and the box includes the A rib that covers the downstream side of the air flow of the anode plate is provided.
[0015]
Further, the rib is located closer to the anode plate than the outline of the box.
[0016]
Moreover, the discharge mechanism of the electrostatic precipitator has a shape that is long in the lateral direction.
[0017]
Further, the discharge mechanism of the electrostatic precipitator according to any one of claims 1 to 6 is arranged upstream of the heat exchanger in the air conditioner air passage.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
The first embodiment of the present invention will be described below with reference to FIGS.
1 to 3 are perspective views or cross-sectional views of the discharge mechanism of the electrostatic precipitator, and FIG. 4 is a cross-sectional view of the air conditioner 4 to which the discharge mechanism of the electrostatic precipitator is attached. is there.
[0019]
First, as shown in FIG. 4, a suction grill 6 having an air suction port 6a and a top panel 5 having an air suction port 5a are provided on the front surface of an air conditioner 4 installed in a room or the like. The heat exchanger 8 and the blower 7 are sequentially arranged behind the top panel 6 and the top panel 5 so that the heat exchanger 8 covers the blower 7 and is built in the air conditioner 4.
In addition, an air outlet 9 for blowing air from the blower 7 is formed in the lower portion of the suction grill 6 by an air passage of the blower, and an outlet flap 10 is provided on the air outlet 9 side of the air passage. The direction of the blown air is adjusted by the operation of the blowout flap 10.
[0020]
Furthermore, an electric dust collector 3 is provided between the suction grill 6 and the heat exchanger 8.
As shown in FIG. 3, the electrostatic precipitator 3 is made of a plastic material which is provided between the cathode electrode plate 12 and the cathode electrode plate 12 and supports and surrounds the anode electrode plate 11 which performs ion discharge. A box 13 and a box cover 14 attached to the box 13 and covering the negative / anode electrode plate portion are configured.
[0021]
As shown in FIG. 2, the structure of the cathode plate as a discharge element at this time is arranged so that the cathode plates 12 face each other across the cathode contact plate 12a. The anode plate portion as the other discharge element has an I, L, or T-shaped structure having an anode contact plate 11a at one end of the anode plate, and this anode plate portion. The anode contact plate 11a is located on the opening side of the U-shaped cathode electrode plate portion at the portion where the cathode electrode plate 12 and the cathode electrode plate 12 do not discharge, and the anode electrode plate 11 faces the cathode of the U-shaped cathode electrode plate portion facing each other. The structure is such that it is located approximately in the middle between the electrode plates 12.
[0022]
The operation of the discharge mechanism configured as described above starts discharge from the anode plate 11 to the cathode plate 12 when a voltage is applied from the power supply device to the anode contact plate 11a and the cathode contact plate 12a. Dust between the anode plate 11 and the cathode plate 12, that is, dust in the air is ionized and captured.
[0023]
At this time, it faces the position of the anode electrode plate 11 located substantially at the center in the horizontal direction of the electrostatic precipitator 3, and is closer to the anode electrode plate 11 side than the outer shell of the box 13 at the center of the box 13. Thus, when the rib 13a is provided so as to cover the anode electrode plate 11, even if an electrically conductive object such as the heat exchanger 8 is provided on the back surface of the anode electrode plate 11, that is, on the downstream side of the air flow, the anode electrode plate 11 is provided. Since the creeping distance between the conductive plate and the conductive object can be increased, no discharge is made from the anode plate 11 to the conductive object such as the heat exchanger 8, so that the discharge mechanism of the electrostatic precipitator having a good discharge interruption can be obtained.
[0024]
Moreover, as described above, when the rib 13a is closer to the anode electrode plate 11 side than the outer shell of the box 13, the creepage distance is further increased, so that the discharge blocking performance is further improved.
Therefore, even if such a discharge mechanism is arranged close to the upstream side of the heat exchanger 8 of the air conditioner due to the installation space, the creeping distance between the cathode plate 11 and the heat exchanger 8 can be increased. A compact air conditioner that has excellent discharge blocking properties and cleans the air.
[0025]
In the above description, the discharge mechanism composed of the U-shaped cathode electrode plate and anode electrode plate has been described as an example in which a horizontally long shape is placed horizontally, but this is arranged in the vertical direction. May be used. However, when the product is vertically long, it is good, but when it is short vertically and horizontally long, many plates must be arranged with the cathode plate and anode plate shortened in the vertical direction. Since it disappears, it becomes expensive.
[0026]
Therefore, if such a discharge mechanism of the horizontally long electrostatic precipitator is provided in the indoor unit air passage of the horizontally long air conditioner, the number of cathode plates and anode plates can be reduced. Is obtained.
[0027]
【The invention's effect】
As described above, according to the present invention, the U-shaped cathode electrode plate part formed by connecting the cathode electrode plates facing each other via the cathode contact plate, and the cathode electrode plate parts facing each other. An anode electrode plate part configured by connecting an anode contact plate to one end of an anode electrode plate provided substantially in the middle between the cathode electrode plates, the anode contact plate facing the cathode contact plate The U-shaped cathode electrode plate is disposed at the opening side of the cathode electrode plate at a distance that does not discharge, so that there is no need to insert an insulating member between the negative and anode contact plates.・ No discharge between anode contact plates and no discharge between cathode plates, so it is possible to obtain an economical discharge mechanism of an electrostatic precipitator that does not require insulating parts to prevent excessive discharge. It is done.
[0028]
Further, since the anode contact plate and the cathode contact plate have the same shape, a discharge mechanism of the electrostatic precipitator with good productivity can be obtained.
[0029]
In addition, since the cathode plates facing each other have the same shape, a discharge mechanism of the electrostatic precipitator with good productivity can be obtained.
[0030]
In addition, it is provided in the middle of the U-shaped cathode electrode plate part formed by connecting the cathode electrode plates facing each other via the cathode contact plate, and the cathode electrode plates facing each other. An anode electrode plate portion configured by connecting an anode contact plate to one end of the anode electrode plate, and a box for storing the anode electrode plate portion and the cathode electrode plate portion, and the box includes the Since the rib covering the downstream side of the air flow of the anode plate is provided, even if an electrically conductive object is provided on the back side of the anode plate, that is, the downstream side of the air flow, the creepage distance between the anode plate and the conductive object Therefore, the discharge mechanism of the electrostatic precipitator having a good discharge blocking property can be obtained.
[0031]
Further, since the rib is located on the anode plate side with respect to the outline of the box,
Further, since the creepage distance can be increased, a discharge mechanism of the electrostatic precipitator having a better discharge blocking property can be obtained.
[0032]
In addition, since the discharge mechanism composed of the U-shaped cathode plate and anode plate has a shape that is long in the horizontal direction, the cathode electrode is particularly useful when the product is an air conditioner that is vertically or horizontally elongated. Since the number of plates and anode plates can be reduced, an economical discharge mechanism of an electrostatic precipitator can be obtained.
[0033]
Further, since the discharge mechanism of the electrostatic precipitator according to any one of claims 1 to 6 is disposed upstream of the heat exchanger in the air conditioner air passage, it is particularly disposed close to the heat exchanger. However, since the creepage distance between the cathode plate and the heat exchanger can be increased, a compact air conditioner that has excellent discharge blocking properties and cleans the air can be obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view of a discharge mechanism of an electric dust collector of the present invention.
FIG. 2 is a perspective view of a plasma element portion of the discharge mechanism of the present invention.
FIG. 3 is a sectional view of a discharge mechanism of the electric dust collector of the present invention.
FIG. 4 is a schematic cross-sectional view of an air conditioner using the discharge mechanism of the present invention.
FIG. 5 is a perspective view of a discharge mechanism of a conventional electrostatic precipitator.
FIG. 6 is a sectional view of a product using a discharge mechanism of a conventional electrostatic precipitator.
[Explanation of symbols]
4 air conditioner, 5 ceiling panel, 6 suction grille, 7 blower, 8 heat exchanger, 9 air outlet, 10 flap, 11 anode plate, 11a anode contact plate, 12 cathode plate, 12a cathode contact plate, 13 box 13a ribs, 14 box covers.

Claims (7)

A cathode plate having a U-shape formed by connecting cathode plates facing each other via a cathode contact plate, and the cathode plate having substantially the middle between the cathode plates facing each other. An anode electrode plate portion connected to one end of the anode electrode plate, and the U-shaped cathode electrode plate portion so that the anode contact plate faces the cathode contact plate A discharge mechanism for an electrostatic precipitator, wherein the discharge mechanism is arranged at a distance from the cathode electrode plate so as not to discharge. The discharge mechanism of the electrostatic precipitator according to claim 1, wherein the anode contact plate and the cathode contact plate have the same shape. The discharge mechanism of the electrostatic precipitator according to claim 1, wherein the opposing cathode plates have the same shape. A cathode plate having a U-shape formed by connecting cathode plates facing each other via a cathode contact plate, and the cathode plate having substantially the middle between the cathode plates facing each other. An anode electrode plate portion configured by connecting an anode contact plate to one end of the anode electrode plate, and a box for housing the anode electrode plate portion and the cathode electrode plate portion, and the box includes the anode electrode A discharge mechanism for an electrostatic precipitator comprising a rib for covering the downstream side of the air flow of the plate. The discharge mechanism of the electrostatic precipitator according to claim 4, wherein the rib is positioned closer to the anode electrode plate than the outline of the box. 6. The discharge mechanism for an electrostatic precipitator according to claim 1, wherein the discharge mechanism composed of the U-shaped cathode plate and anode plate has a shape that is long in the lateral direction. An air conditioner in which the discharge mechanism of the electrostatic precipitator according to any one of claims 1 to 6 is arranged on the upstream side of the heat exchanger in the air conditioner air passage.

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