JP2006224054A - Electric dust collecting unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric dust collecting unit having an improved dust collecting capability and a thinner body. <P>SOLUTION: The electric dust collecting unit comprises a plural number of needle electrodes 1 with their tips 5 pointing downstream, parallel electrodes 3 disposed parallel to the needle electrodes 1, and a perforated electrode 4 disposed downstream of the needle electrodes 1 and facing its tips 5, thus the needle electrodes 1 being surrounded by the parallel electrodes 3 and the perforated electrode 4 to roughly form a U shape, which makes electric discharge from the needle electrodes 1 to the counter electrodes multi-directional, thereby enhancing the dust collecting capability and enables the installation of the needle electrodes 1 in proximity of the perforated electrode 4, thereby making the body of the electric dust collecting unit thinner. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electric dust collection unit that is provided in an air flow path of an air conditioner or the like and removes dust or the like contained in air that is air-conditioned.

  2. Description of the Related Art Conventionally, this type of electrostatic dust collection unit is known to have a needle-like discharge electrode (see, for example, Patent Document 1).

  The electric dust collection unit will be described below with reference to FIG.

As shown in the figure, a needle-like discharge electrode 104 is provided on the suction port 101 side of the filter frame 103 in which the suction port 101 and the blower port 102 are formed. Alternatively, a grounding electrode 105 such as punching metal is provided, and a filter 106 is provided on the leeward side of the grounding electrode 105 to form a filter device 107.
Japanese Patent Laying-Open No. 2003-10731 ([0014], FIG. 1)

  In such a conventional electrostatic dust collection unit, the tip of the needle-like discharge electrode is oriented in a direction substantially parallel to the ground electrode 105, and there is a problem that the dust collection performance is still insufficient and cannot be formed into a thin shape. Therefore, it is required to increase the dust collection performance and form a thin shape.

  The present invention solves the above-described problems, and an object of the present invention is to provide an electric dust collection unit capable of improving dust collection performance and reducing the thickness.

  In order to achieve the above object, the electric dust collection unit of the present invention has a plurality of needle-like electrodes provided with pointed portions in the downstream direction, parallel electrodes provided in parallel with the needle-like electrodes, and the needle-like electrodes. An aperture electrode disposed on the downstream side facing the tip portion is provided, and the parallel electrode and the aperture electrode are arranged in a substantially U shape so as to surround the needle electrode.

  By this means, an electric dust collection unit capable of improving dust collection performance and reducing the thickness can be obtained.

  Another means is that the distance from the tip of the needle electrode to the parallel electrode is the same as the distance to the aperture electrode.

  By this means, an electric dust collection unit capable of improving dust collection efficiency can be obtained.

  Another means is that the discharge distance from the tip of the needle electrode to the parallel electrode is 6 mm to 15 mm, and the applied voltage of the discharge electrode is set to -4 KV to -8 KV.

  By this means, it is possible to obtain an electric dust collection unit that can suppress variations in dust collection efficiency and ensure a high collection rate.

  Another means is that the pitch of the needle electrodes provided on the needle electrode plate is 8 mm to 30 mm.

  By this means, an electric dust collection unit capable of improving dust collection efficiency can be obtained.

  Another means is that the needle-like electrode plate is made of sheet metal, and the needle-like electrode is formed by a root portion widened so as to reinforce the sharp-pointed tip portion.

  By this means, it is possible to obtain an electric dust collection unit that can reduce the welding process of the discharge needle and reduce the cost.

  In addition, the other means includes a plurality of needle-like electrodes arranged in parallel and equidistantly, a plate-like parallel electrode provided in parallel with the needle-like electrode plates and equidistantly, A plate-like aperture electrode that supports the parallel electrodes, and the needle-like electrode plate and the number of the parallel electrodes and the size of the aperture electrode can be adjusted so that the installation area can be increased or decreased. .

  By this means, an electric dust collecting unit that can be designed according to the shape and size of the ventilation surface of various air conditioners and can reduce costs by standardizing parts is obtained.

  Another means is that a dust collection filter is disposed on the downstream side in contact with the aperture electrode.

  By this means, an electric dust collection unit capable of improving dust collection efficiency can be obtained.

  Another means is that a deodorizing filter is disposed on the downstream side in contact with the aperture electrode.

  By this means, an electric dust collection unit capable of improving the deodorization efficiency can be obtained.

  In another means, a dust collection filter or a deodorization filter provided on the downstream side of the aperture electrode is formed so as to have conductivity.

  By this means, an electric dust collection unit that can improve dust collection efficiency or deodorization efficiency is obtained.

  In another means, a dust collection filter or a deodorizing filter is arranged in parallel on the upstream side of the aperture electrode, and at least the back surface of the dust collection filter or the deodorization filter is in contact with the aperture electrode.

  By this means, an electric dust collection unit capable of maintaining dust collection efficiency is obtained.

  Another means is that the upper surface position of the dust collecting filter or deodorizing filter arranged upstream of the aperture electrode is provided at the same distance as the distance from the tip of the needle electrode to the parallel electrode. It is.

  By this means, an electric dust collection unit capable of improving dust collection efficiency is obtained.

  Another means is to attach a plurality of drug components, which are difficult to apply in multiple layers, to two or more dust collecting filters.

  By this means, a versatile and multifunctional electric dust collecting unit suitable for the type of odor and gas active ingredient can be obtained.

  Another means is that a first dust collecting filter or deodorizing filter is arranged upstream of the aperture electrode, and a second dust collecting filter or deodorizing filter is arranged downstream of the aperture electrode. is there.

  By this means, an electric dust collection unit that can improve dust collection efficiency or deodorization efficiency is obtained.

  Further, the other means are the number of the first dust collection filter or deodorization filter provided on the upstream side of the aperture electrode and the size of the second dust collection filter or deodorization filter provided on the downstream side of the aperture electrode. By adjusting the height, it is possible to respond to the increase and decrease of the installation area.

By this means, it is possible to obtain an electric dust collection unit which can share and standardize parts and can easily change the design.

  According to the present invention, it is possible to provide an electric dust collection unit having an effect of improving dust collection performance and reducing the thickness.

  In addition, it is possible to provide an electric dust collection unit having an effect of improving the dust collection efficiency.

  In addition, it is possible to provide an electric dust collection unit having an effect of suppressing variation in dust collection efficiency and ensuring a high collection rate.

  Further, it is possible to provide an electric dust collection unit having an effect that the cost can be reduced.

  In addition, it is possible to provide an electric dust collection unit that is effective in improving the deodorization efficiency.

  In addition, it is possible to provide an electric dust collection unit that has the effect of being compatible with various uses and functions suitable for the types of odors, gases, and active ingredients.

  In addition, it is possible to provide an electric dust collection unit that can share and standardize parts and can be easily changed in design.

  According to the first aspect of the present invention, there are provided a plurality of needle-like electrodes provided with a pointed portion in the downstream direction, a parallel electrode provided parallel to the needle-like electrode, and a surface of the pointed portion of the needle-like electrode. The parallel electrode and the aperture electrode are arranged in a substantially U shape so as to surround the needle electrode, and the tip of the needle electrode The discharge from the head to the counter electrode is possible in multiple directions, improving the dust collection performance, and the needle-like electrode can be placed close to the aperture electrode, making the electric dust collection unit thinner Has the effect of making possible.

  In the invention according to claim 2, the distance from the tip of the needle electrode to the parallel electrode is the same as the distance from the aperture electrode. The distance between the aperture electrodes will be evenly arranged, variation in discharge will be suppressed, and the parallel electrode and the aperture electrode will be evenly discharged into the space formed by arranging them in a substantially U shape, The dust collection performance is good, and the dust collection efficiency can be improved.

  Further, the invention according to claim 3 is such that the discharge distance from the tip of the needle electrode to the parallel electrode is 6 mm to 15 mm, and the applied voltage is set to -4 KV to -8 KV according to the discharge electrode, Effective discharge conditions can be obtained, variation in dust collection efficiency is suppressed, and a high dust collection rate can be secured.

  In the invention according to claim 4, the pitch of the needle-like electrodes provided on the needle-like electrode plate is 8 mm to 30 mm, and the pitch between the tip portions of the needle-like electrodes has a distance when the voltage is high. If it is too close, the current will flow excessively, so it is necessary to increase the distance.On the other hand, if the voltage is low, the current will not flow if the distance is long. By setting the thickness to 8 mm to 30 mm, the discharge interfering between the tip portions of the needle-like electrodes is suppressed, and the parallel electrode and the aperture electrode are uniformly discharged to improve the dust collection efficiency. .

  In the invention according to claim 5, the needle-like electrode plate is formed of a sheet metal, and the needle-like electrode is formed by a sharp-angled tip portion and a root portion widened so as to reinforce the needle-like electrode. It is firmly fixed by the base that has been expanded so as to reinforce it when it is fixed to the resin frame, and the tip of the needle electrode is held in a fixed position. , The welding process of separately welding the discharge needle can be reduced, and the cost can be reduced.

  The invention described in claim 6 has a plurality of needle-like electrodes, a needle-like electrode plate arranged in parallel and equidistantly, and a plate-like parallel provided in parallel to the needle-like electrode plate and equidistantly. An electrode and a plate-shaped aperture electrode that supports the parallel electrode, and the number of the needle-shaped electrode plate and the parallel electrode and the size of the aperture electrode can be adjusted to accommodate an increase or decrease in the installation area Since one dust collection unit consisting of parallel electrodes, needle-shaped electrode plates, and aperture electrodes can be developed as a basic unit, the parallel electrodes and needle-shaped electrode plates can be shared and opened. The hole electrode can be expanded to an integral multiple of the basic unit simply by increasing the part area, which allows the design to be adapted to the shape and size of the ventilation surface of various air conditioners, reducing the cost by standardizing parts. It has the effect of being able to plan.

  The invention according to claim 7 is the one in which a dust collecting filter is disposed on the downstream side in contact with the aperture electrode, and dust charged by the discharge from the tip of the needle electrode to which high voltage is applied is collected. It has the effect of being able to improve the dust collection efficiency by collecting with a dust filter.

  Further, the invention according to claim 8 is the one in which a deodorizing filter is disposed on the downstream side in contact with the aperture electrode, and the odor component together with dust charged by the discharge from the tip of the needle electrode to which a high voltage is applied. Is collected by the deodorizing filter and exhibits the dust collecting function and has the effect of improving the deodorizing efficiency.

  The invention according to claim 9 is such that the dust collection filter or deodorizing filter provided on the downstream side of the aperture electrode is formed so as to have conductivity, and is conductive in contact with the aperture electrode. The entire surface of the dust collection filter or deodorization filter can be grounded, and dust charged by discharge from the tip of the needle electrode to which high voltage is applied, and odor components contained in the dust are removed. It has an effect that it can be reliably collected and dust collection efficiency or deodorization efficiency can be improved.

  Further, the invention according to claim 10 is one in which a dust collection filter or a deodorizing filter is arranged in parallel on the upstream side of the aperture electrode, and at least a rear surface of the dust collection filter or the deodorization filter is in contact with the aperture electrode. The entire filter formed by the dust collection filter or deodorizing filter can be grounded, and dust charged in the vicinity of the tip of the needle electrode to which high voltage is applied can be collected by the entire filter, improving dust collection efficiency. Further, in the electric dust collection unit of the embodiment, since the side surface of the filter is brought into contact with the parallel electrode, it is possible to maintain the dust collection efficiency by maintaining the ground potential from the side surface of the filter. .

  In the invention according to claim 11, the dust collection filter or deodorization filter disposed upstream of the aperture electrode is made conductive, and the upper surface position of the dust collection filter or deodorization filter is parallel to the tip of the needle electrode. It is installed at the same distance as the distance to the electrode, and it is not discharged concentratedly on the upper surface of the dust collection filter. It can be immediately collected by the dust collection filter, and has the effect of making it possible to improve the dust collection efficiency.

  In the invention of claim 12, a plurality of chemical components that are difficult to be applied in multiple layers are attached in two or more dust collecting filters, and a plurality of chemicals that cannot be attached to the filter at the same time can be provided. It can be attached to each filter, and in one electric dust collection unit, it has the effect that a versatile and multifunctional electric dust collection unit suitable for the type of odor, gas and active ingredient can be realized.

  In the invention described in claim 13, the first dust collecting filter or deodorizing filter is disposed upstream of the aperture electrode, and the second dust collecting filter or deodorizing filter is disposed downstream of the aperture electrode. The two-layer structure of the upstream and downstream dust collection filters or deodorization filters can be realized, and the filter arrangement can be changed according to the application, and the dust collection efficiency or deodorization efficiency can be improved. It has the action.

  The invention according to claim 14 is the number of the first dust collecting filter or deodorizing filter provided on the upstream side of the aperture electrode and the second dust collecting filter or deodorizing filter provided on the downstream side of the aperture electrode. It is possible to respond to the increase and decrease of the installation area by adjusting the size of the air conditioner, and can respond to the shape and size of various air conditioners by increasing the number of filters of the same shape upstream of the aperture electrode, The parts can be shared and standardized, and the design can be easily changed.

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

(Embodiment 1)
As shown in FIG. 1 to FIG. 7, a needle-like electrode plate 2 having a plurality of needle-like electrodes 1 and arranged in parallel and equidistantly, and a plate-like shape provided in parallel and equidistantly to the needle-like electrode plate 2 The parallel electrode 3 and the plate-like aperture electrode 4 that supports the parallel electrode 3 are provided, and the needle-like electrode 1 faces the tip portion 5 of the needle-like electrode 1 with the tip portion 5 facing downstream. An aperture electrode 4 is provided on the downstream side, and the parallel electrode 3 and the aperture electrode 4 are arranged in a substantially U shape so as to surround the needle electrode 1.

  Further, the distance L from the tip 5 of the needle electrode 1 to the parallel electrode 3 and the distance L from the aperture electrode 4 are the same distance, and the discharge distance from the tip 5 of the needle electrode 1 to the parallel electrode 3. L is 6 mm to 15 mm, the applied voltage is set to −4 KV to −8 KV according to the discharge distance L of the needle electrode 1, and the pitch P of the needle electrodes 1 provided on the needle electrode plate 2 is 8 mm to 30 mm. Form.

  The needle-like electrode plate 2 is made of sheet metal, and the needle-like electrode 1 is formed by an acute-pointed tip portion 5 and a root portion 6 that is widened so as to reinforce, and the frame portion 7 is formed at the root portion when molded with resin. 6 to stabilize the position of the tip 5 of the needle electrode 1.

  In addition, the number of needle-like electrode plates 2 and parallel electrodes 3 and the size of the aperture electrode 4 are adjusted so that the installation area can be increased or decreased. A dust collection filter 8 is provided upstream of the aperture electrode 4. A deodorizing filter 9 is provided on the downstream side.

  In the above configuration, the needle-like electrode 1 provided at the suction port when air flows through an electric dust collection unit attached to an air flow path of an air conditioner (not shown) or the like via a high voltage application device (not shown). When a large electric field is formed in the vicinity of the needle electrode 1 by the negative high voltage applied to the electrode and the aperture electrode 4 serving as the ground electrode, and when electrons are emitted from the needle electrode 1 into the air, The air molecules are ionized by binding to other air molecules, etc., and adhere to the dust in the air to charge the dust. The charged dust particles are collected by the parallel electrode 3 and the aperture electrode 4 Dust is collected by the dust collection filter 8 provided on the upstream side. Further, odor components are collected and deodorized by the deodorizing filter 9 provided on the downstream side of the aperture electrode 4.

  Furthermore, the parallel electrode 3 and the aperture electrode 4 are arranged in a substantially U shape so as to surround the needle electrode 1, so that the parallel electrode 3 that becomes the counter electrode from the pointed portion 5 of the needle electrode 1 and Since the discharge to the aperture electrode 4 can be performed in multiple directions, the dust collection performance can be improved, and the needle-like electrode 1 can be disposed close to the aperture electrode 4, thereby reducing the thickness of the electric dust collection unit. Can be realized.

  Further, since the distance L from the tip 5 of the needle electrode 1 to the parallel electrode 3 and the distance L to the aperture electrode 4 are the same distance, variation in discharge can be suppressed, and the parallel electrode 3 and aperture By disposing the electrode 4 in a substantially U-shape, it is discharged evenly in the space formed and the dust collection performance is improved.

  The discharge distance L from the tip 5 of the needle electrode 1 to the parallel electrode 3 is 6 mm to 15 mm, and the applied voltage is set to -4 KV to -8 KV according to the needle electrode 1 serving as the discharge electrode. Thus, effective discharge conditions can be obtained, and variations in dust collection efficiency can be suppressed.

  Further, by setting the pitch P of the needle-like electrodes 1 provided on the needle-like electrode plate 2 to 8 mm to 30 mm, the discharge range that interfered between the pointed portions 5 of the needle-like electrodes 1 is appropriately maintained, and the parallel electrodes 3 and the aperture electrode 4 are uniformly discharged.

  Further, the needle-like electrode plate 2 is formed of a sheet metal, and the needle-like electrode 1 is formed by the sharp-pointed tip portion 5 and the root portion 6 that is widened so as to reinforce the needle-like electrode 1. When fixed to the frame portion 7, it is firmly fixed by the root portion 6 spread so as to reinforce, and the tip portion 5 of the needle electrode 1 is held at a fixed position, so that the needle electrode with a small pitch 1 can be formed by sheet metal working.

  Further, by adjusting the quantity of the needle electrode plate 2 and the parallel electrode 3 and the size of the aperture electrode 4 so as to be able to cope with the increase and decrease of the installation area, one of the needle electrode plate 2 and the aperture electrode 4 is provided. One dust collection unit can be developed as a basic unit, the parts of the needle electrode plate 2 and the parallel electrode 3 can be shared, and the aperture electrode 4 can be an integral multiple of the basic unit simply by increasing the part area. As a result, the design can be adapted to the shape and size of the ventilation surface of various air conditioners, and the cost can be reduced by standardizing parts.

(Embodiment 2)
As shown in FIG. 8, a dust collection filter 8A or a deodorizing filter 9A is provided on the downstream side in contact with the aperture electrode 4A.

  In the above configuration, when the dust collection filter 8A is provided in contact with the downstream side of the aperture electrode 4A, dust charged by the discharge from the tip portion 5 of the needle electrode 1 to which a high voltage is applied is captured. Can be collected.

  Further, when the deodorizing filter 9A is provided in contact with the downstream side of the aperture electrode 4A, odor components are captured together with dust charged by the discharge from the tip portion 5 of the needle electrode 1 to which a high voltage is applied. Collects and exhibits a deodorizing function and improves dust collection efficiency.

(Embodiment 3)
As shown in FIG. 9, a dust collection filter 8B or a deodorizing filter 9B provided on the downstream side of the aperture electrode 4B is formed and configured to have conductivity.

  In the above configuration, when the conductive dust collection filter 8B in contact with the aperture electrode 4B is provided, the entire surface of the dust collection filter 8B can be set to the ground potential, and a high voltage is applied there. The dust charged by the discharge from the tip portion 5 of the needle electrode 1 to which is applied is collected by the dust collection filter 8B, and the dust collection efficiency is improved.

  Further, in the case where the conductive deodorizing filter 9B in contact with the aperture electrode 4B is provided, the entire surface of the deodorizing filter 9B can be set to the ground potential, and a high voltage is applied thereto. The dust charged by the discharge from the tip portion 5 of the needle electrode 1 and the odor component contained in the dust are collected to improve the dust collection efficiency and the deodorization efficiency.

(Embodiment 4)
As shown in FIG. 10, a plurality of dust collection filters 8C or deodorizing filters 9C are arranged in parallel on the upstream side of the aperture electrode 4C, and the rear surface of the arranged dust collection filter 8C or deodorization filter 9C is used as the aperture electrode 4C. The side surface of the dust collection filter 8C or the deodorizing filter 9C is brought into contact with the parallel electrode 3A.

  In the above configuration, when the dust collection filter 8C is disposed on the upstream side of the aperture electrode 4C, the dust collection filter 8C can be set to the ground potential and in the vicinity of the tip 5 of the needle electrode 1 to which a high voltage is applied. The charged dust can be collected by the entire dust collection filter 8C provided in parallel.

  Further, when the deodorizing filter 9C is disposed on the upstream side of the aperture electrode 4C, the deodorizing filter 9C can be set to the ground potential, and dust charged in the vicinity of the tip portion 5 of the needle electrode 1 applied with a high voltage; Odor components contained in dust can be collected by the entire deodorizing filter 9C provided in parallel.

  Further, since the side surface of the dust collection filter 8C or the deodorizing filter 9C is brought into contact with the parallel electrode 3A, the side surface of the dust collection filter 8C or the deodorizing filter 9C whose back surface is grounded is also grounded so that the ground potential is kept wide. Therefore, the dust collection efficiency or the deodorization efficiency can be maintained.

(Embodiment 5)
As shown in FIG. 11, the dust collection filter 8D or the deodorizing filter 9D disposed on the upstream side of the aperture electrode 4D is made conductive, and the upper surface position of the dust collection filter 8D or the deodorizing filter 9D is the tip of the needle electrode 1A. It is provided at a position where the distance L is the same as the distance L from 5A to the parallel electrode 3B.

  In the above configuration, when the dust collection filter 8D is disposed upstream of the aperture electrode 4D, the upper surface of the dust collection filter 8D is the same as the distance L from the tip 5A of the needle electrode 1A to the parallel electrode 3B. As a result, the discharge is not concentrated on the upper surface of the dust collection filter 8D, the discharge is substantially evenly performed on the dust collection filter 8D and the parallel electrode 3B, the discharge range is expanded, and the dust collection efficiency is increased. Can be improved.

  Further, when the deodorizing filter 9D is arranged on the upstream side of the aperture electrode 4D, by making the upper surface of the deodorizing filter 9D the same as the distance from the tip 5A of the needle electrode 1A to the parallel electrode 3B, It is no longer concentrated and discharged on the upper surface of the deodorizing filter 9D, and is discharged almost evenly on the deodorizing filter 9D and the parallel electrode 3B, so that charged dust and odor components contained in the dust can be collected. Dust collection efficiency and deodorization efficiency can be improved.

(Embodiment 6)
As shown in FIG. 12, two dust collection filters 8E and 8F or deodorization filters 9E and 9F each provided with a plurality of drug components 10 or 10A, which are difficult to be multilayered, are provided by being partitioned by parallel electrodes 3C. 8E and 8F or deodorizing filters 9E and 9F are attached and configured separately.

  In the above configuration, when the dust collection filter 8E with the chemical component 10 attached to the upstream side of the aperture electrode 4E and the dust collection filter 8F with the chemical component 10A attached in parallel through the parallel electrode 3C, Is collected by the dust collection filters 8E and 8F, and a different drug component 10 or 10A is attached to each of the dust collection filters 8E and 8F, so that, for example, the drug component 10 has no harmful components such as viruses. In the other pharmaceutical component 10A, other harmful components such as allergens are inactivated or decomposed, and a plurality of different types of harmful components can be inactivated or decomposed.

  In addition, when the deodorizing filter 9E with the chemical component 10 attached upstream of the aperture electrode 4E and the deodorizing filter 9F with the chemical component 10A attached in parallel via the parallel electrode 3C, it is included in dust and dust. The odor component is collected by the deodorizing filters 9E and 9F, and the chemical component 10 or 10A which is different for each deodorizing filter 9E and 9F is attached, so that the chemical component 10 contains harmful gas containing the odor component. In the drug component 10A, harmful substances such as bacteria can be inactivated or decomposed.

  In the sixth embodiment, two dust collecting filters 8E and 8F or deodorizing filters 9E and 9F have been described. However, two or more dust collecting filters 8E and 9F attached with other chemical components may be used. There is no difference in effect.

(Embodiment 7)
As shown in FIG. 13, the first dust collection filter 11 or the first deodorizing filter 12 is arranged on the upstream side of the aperture electrode 4F, and the second dust collection filter 13 or the first deodorization filter 12 is arranged on the downstream side of the aperture electrode 4F. The deodorizing filter 14 is provided, and the number of the first dust collecting filter 11 or the first deodorizing filter 12 and the size of the second dust collecting filter 13 or the second deodorizing filter 14 can be adjusted. To do.

  In the above configuration, when the first dust collection filter 11 is provided on the upstream side of the aperture electrode 4F and the second dust collection filter 13 is provided on the downstream side, charged dust is generated in the vicinity of the needle electrode 1B. It is collected by the first dust collection filter 11 and the second dust collection filter 13.

  Moreover, when the 1st deodorizing filter 12 is provided in the upstream of the aperture electrode 4F, and the 2nd deodorizing filter 14 is provided in the downstream, the odor component mainly contained in dust is collected.

  Further, when the first dust collection filter 11 is provided on the upstream side of the aperture electrode 4F and the second deodorizing filter 14 is provided on the downstream side, dust is collected by the first dust collection filter 11. The second deodorizing filter 14 collects odor components contained in dust.

  Moreover, when the 1st deodorizing filter 12 is provided in the upstream of the aperture electrode 4F, and the 2nd dust collection filter 13 is provided in the downstream, the odor component contained in dust by the 1st deodorizing filter 12 is shown. The dust is collected and collected by the second dust collecting filter 13.

  Further, the number and the number of the first dust collecting filters 11 having the same shape can be increased on the upstream side of the aperture electrode 4F with respect to the shape and size of the air conditioner to which the electric dust collecting unit is mounted. When the size of the aperture electrode 4F is changed depending on the size of the air conditioner, the size of the second dust collecting filter 13 or the second deodorizing filter 14 can be adjusted to cope with an increase or decrease in the installation area. The parts can be shared and standardized, and the design can be easily changed.

  Taking advantage of the fact that thinning can be achieved by using parallel electrodes supported by the aperture electrode, it can also be applied to uses such as an air purifier and a negative ion generator.

Sectional drawing which shows the structure of the electrode of the electric dust collection unit of Embodiment 1 of this invention Sectional drawing showing the configuration of the electric dust collection unit (A) The characteristic diagram which shows the relationship between the discharge distance of an electrostatic precipitator unit and efficiency (b) The characteristic diagram which shows the relationship between the discharge distance of an electrostatic precipitator unit and a high voltage output Side view of acicular electrode plate showing pitch interval of acicular electrodes of electric dust collecting unit Side view showing the configuration of the needle electrode of the electric dust collection unit The characteristic diagram showing the relationship between the pitch of the needle electrode of the electrostatic dust collection unit and the high voltage output The perspective view which shows the relationship between the parallel electrode and acicular electrode of an electrostatic precipitator unit (A) Sectional drawing which shows the relationship between the electrode of the electrostatic dust collection unit of Embodiment 2 of this invention, and a dust collection filter (b) Sectional drawing which shows the relationship between the electrode of an electrostatic dust collection unit, and a deodorizing filter (A) Sectional drawing which shows the relationship between the electrode of the electrostatic dust collection unit of Embodiment 3 of this invention and a dust collection filter (b) Sectional drawing which shows the relationship between the electrode of an electrostatic dust collection unit, and a deodorizing filter (A) Sectional drawing which shows the relationship between the electrode of the electrostatic dust collection unit of Embodiment 4 of this invention, and a dust collection filter (b) Sectional drawing which shows the relationship between the electrode of an electrostatic dust collection unit, and a deodorizing filter (A) Sectional drawing which shows the relationship between the electrode of the electrostatic dust collection unit of Embodiment 5 of this invention, and a dust collection filter (b) Sectional drawing which shows the relationship between the electrode of an electrostatic dust collection unit, and a deodorizing filter (A) Sectional drawing which shows the relationship between the electrode of the electrostatic dust collection unit of Embodiment 6 of this invention, and a dust collection filter (b) Sectional drawing which shows the relationship between the electrode of an electrostatic dust collection unit, and a deodorizing filter (A) Sectional drawing (b) which shows the relationship between the electrode of the electrostatic dust collection unit of Embodiment 7 of this invention and a dust collection filter (b) Sectional drawing (c) which shows the relationship between the electrode of an electrostatic dust collection unit and a deodorizing filter Sectional view showing relationship between electrode of electric dust collection unit and dust collection / deodorization filter (d) Sectional view showing relationship between electrode of electric dust collection unit and deodorization / dust collection filter Sectional view of a conventional electric dust collection unit

Explanation of symbols

1, 1A Needle-shaped electrode 2 Needle-shaped electrode plate 3, 3B Parallel electrode 4, 4A, 4B, 4C, 4D, 4F Aperture electrode 5, 5A Pointed portion 6 Root portion 8A, 8B, 8C, 8D, 8E, 8F Dust collection filter 9A, 9B, 9C, 9D, 9E, 9F Deodorization filter 10, 10A Pharmaceutical component 11 First dust collection filter 12 First deodorization filter 13 Second dust collection filter 14 Second deodorization filter

Claims (14)

A plurality of needle-like electrodes provided with a tip in the downstream direction; a parallel electrode provided parallel to the needle-like electrode; and an aperture electrode disposed on the downstream side facing the tip of the needle-like electrode; And the parallel electrode and the aperture electrode are arranged in a substantially U-shape so as to surround the needle-like electrode. The electric dust collection unit according to claim 1, wherein the distance from the tip of the needle electrode to the parallel electrode is the same as the distance from the aperture electrode. The electrostatic precipitator unit according to claim 1 or 2, wherein a discharge distance from the tip of the needle electrode to the parallel electrode is 6 mm to 15 mm, and an applied voltage of the discharge electrode is set to -4 KV to -8 KV. The electric dust collection unit according to claim 1, wherein a pitch of the needle electrodes provided on the needle electrode plate is 8 mm to 30 mm. The electric dust collection unit according to claim 1, wherein the needle electrode plate is formed of a sheet metal, and the needle electrode is formed by an acute-angled tip portion and a root portion widened so as to be reinforced. A needle-like electrode plate having a plurality of needle-like electrodes arranged in parallel at equal intervals, a plate-like parallel electrode provided in parallel with the needle-like electrode plates at equal intervals, and a plate-like shape for supporting the parallel electrodes 2. The electrostatic precipitator unit according to claim 1, further comprising: a plurality of aperture electrodes, wherein the number of the needle-shaped electrode plates and the parallel electrodes and the size of the aperture electrodes can be adjusted to accommodate an increase or decrease in installation area. The electric dust collection unit according to claim 1, wherein a dust collection filter is disposed on the downstream side in contact with the aperture electrode. The electric dust collection unit according to claim 1, wherein a deodorizing filter is disposed on the downstream side in contact with the aperture electrode. The electric dust collection unit according to claim 7 or 8, wherein a dust collection filter or a deodorization filter provided on the downstream side of the aperture electrode is formed to have conductivity. The electric dust collection unit according to claim 1, wherein a dust collection filter or a deodorizing filter is arranged in parallel on the upstream side of the aperture electrode, and at least a back surface of the dust collection filter or the deodorization filter is in contact with the aperture electrode. The dust collection filter or deodorization filter disposed upstream of the aperture electrode is made conductive, and the upper surface position of the dust collection filter or deodorization filter is the same distance as the distance from the tip of the needle electrode to the parallel electrode The electric dust collection unit according to claim 10 provided at a position. The electric dust collection unit according to claim 10, wherein a plurality of chemical components that are difficult to be applied in multiple layers are attached in two or more dust collection filters and deodorization filters. The electric dust collection unit according to claim 1, wherein a first dust collection filter or deodorization filter is disposed upstream of the aperture electrode, and a second dust collection filter or deodorization filter is disposed downstream of the aperture electrode. By adjusting the number of the first dust collecting filter or deodorizing filter provided on the upstream side of the aperture electrode and the size of the second dust collecting filter or deodorizing filter provided on the downstream side of the aperture electrode, The electric dust collection unit according to claim 13, which can cope with increase / decrease.

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