JP3038757U - Electric dust collection unit - Google Patents

Abstract

(57) Abstract: A corona discharge part and a parallel electrode group for dust collection are housed in the same housing so that they can be replaced at the same time. A high voltage applied between a discharge wire of a corona discharge part and a discharge plate 11 and a high voltage applied between an anode plate 21 and a dust collecting electrode plate 22 of a parallel electrode group for dust collection 30. With the same voltage, the corona discharge part and the parallel electrode group 30 for collecting dust are connected to the discharge plate 11, the front plate 12, the back plate 13, the left side plate 1.
4 and the right side plate 15 are housed together in a housing 10. The dust in the air, which is positively charged by the corona discharge part, is collected by the Coulomb force due to the Coulomb force due to the dust collection electric field formed between the anode plate 21 and the dust collection electrode plate 22 of the parallel electrode group 30 for dust collection. Is electrically attracted to and adsorbed on.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an electrostatic precipitator unit, and more particularly, to an electrostatic precipitator unit detachably incorporated in an electrostatic precipitator for use.

[0002]

[Prior art]

 As is well known, electric dust collectors are used for automobile interiors (passenger cars, trucks, buses, etc.), households, hospitals (sick rooms, waiting rooms, consultation rooms, etc.), restaurants, offices (meeting rooms, reception rooms, etc.). Offices, computer rooms, etc.), hotels, inns, railway cars, factories (places that handle powder, etc.), beauty salons, barber rooms, video rooms, acoustic rooms, playgrounds, precision machine rooms, clean rooms, etc. Widely used for air cleaning.

The most efficient electrostatic precipitator currently on the market is a corona discharger in which the discharge electrode and the ground electrode are connected to a high-voltage DC power supply, which is installed upstream of the air flow, and It is configured by combining a parallel electrode group for dust collection, which is installed on the downstream side of the flow and is connected in parallel to a high-voltage DC power supply, and a plurality of parallel sets of dust collecting electrode plates.

In the conventional electrostatic precipitator having such a structure, fine particles (hereinafter referred to as dust) that diffuse and float in the air in the ion region formed by the corona discharge between the discharge electrode and the ground electrode. To be positively charged, and the positively charged dust is moved by the electric field generated between the positive electrode plate and the dust collecting electrode plate of the parallel electrode group for dust collection to be electrically adsorbed to the dust collecting electrode plate. (See, for example, Japanese Patent Publication No. 44-13474 and Japanese Patent Laid-Open No. 2-218454).

By the way, in the conventional electrostatic precipitator, the parallel electrode group for dust collection is housed in the element frame, and when the parallel electrode group for dust collection is contaminated by the collected dust, the whole element frame is attached. It is known that the parallel electrode group for collecting dust is taken out and cleaned to be regenerated or replaced with a new one.

However, even in such an electrostatic precipitator, the corona discharge part is disposed on the main body of the device so that it cannot be removed, and when the corona discharge part becomes dirty, a high voltage is generated. Although it is a dangerous part to be applied, the user or the like needs to clean it with a brush or the like.

[0007]

[Problems to be solved by the device]

 In the above-mentioned conventional electrostatic precipitator, in general, a high voltage applied between the discharge electrode of the corona discharge part and the ground electrode, and between the anode plate and the dust collecting electrode plate of the parallel electrode group for dust collection. Even if the applied high voltage is different and the parallel electrode group for dust collection is housed in the element frame and arranged to be replaceable, the corona discharge part is fixedly arranged on the device side and the user There was a problem that they could not exchange it.

In view of the above points, an object of the present invention is to provide a high voltage applied between the discharge electrode of the corona discharge part and the ground electrode, and the anode plate and the collection electrode plate of the parallel electrode group for collecting dust. Provided is an electrostatic precipitator unit in which the corona discharge part and the parallel electrode group for dust collection are housed in the same housing by making the same high voltage applied between them and the same and easily exchangeable. Especially

[0009]

[Means for Solving the Problems]

 The electrostatic precipitator of the present invention includes a pair of contacts that are respectively in contact with a high-voltage power supply terminal and a ground terminal in the electrostatic precipitator, and a discharge line and a discharge electrically connected to the pair of contacts. A corona discharge part consisting of a plate, and a plurality of staggered anode plates and dust collecting electrode plates that are electrically connected to the pair of contacts, respectively, provided behind the air flow relative to this corona discharge part. Each of them is composed of a group of parallel electrodes for dust collection, which are arranged in parallel at equal intervals, and a housing in which the pair of contacts, the corona discharge part, and the group of parallel electrodes for dust collection are integrally housed and arranged. Characterize

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Next, the present invention will be described in detail with reference to the drawings.

FIGS. 8A and 8B are a transparent front view and a side cross-sectional view showing an outline of an electrostatic precipitator having an electrostatic precipitator unit according to an embodiment of the present invention. This electrostatic precipitator comprises an intake port 1 for sucking in dirty air from the lower surface of the main body of the device, a mesh-like prefilter 2 for preliminarily capturing large dust in the air sucked in through the intake port 1, and a prefilter 2. An electric dust collecting unit 3 according to the present embodiment that collects dust in the air that has passed through, and a deodorizing filter 4 that includes an adsorbent such as activated carbon that removes the odor in the air that has passed through the electric dust collecting unit 3. The main part is composed of a fan 6 that is rotated by a motor 5 to generate a flow of air for collecting dust, and an exhaust port 7 that discharges purified and clean air from the upper side of the front surface of the device body. ing.

1A and 1B are a partially fragmented plan view (top view) and a front view of the electrostatic precipitator unit 3 according to the present embodiment. 2A and 2B are a bottom view and a partially crushed rear view of the electrostatic precipitator unit 3 according to the present embodiment. Furthermore, FIGS. 3A and 3B are a left side view and a right side view of the electrostatic precipitator unit 3 according to the present embodiment.

The electrostatic precipitator unit 3 according to the present embodiment has a laterally long rectangular parallelepiped appearance, and is made up of a discharge plate 11 forming a bottom wall and an insulating resin forming a front wall. From the face plate 12, the back plate 13 made of insulating resin forming the back wall, the left side plate 14 made of insulating resin forming the left side wall, and the right side plate 15 made of insulating resin forming the right side wall The housing 10 is formed. Therefore, the upper surface of the electrostatic precipitator unit 3 is open.

On the lower surface of the casing 10, there is arranged a corona discharge section 20 in which the discharge plate 11 and two discharge wires 16 are incorporated, as shown in FIG.

As shown in the plan view, the side view and the front view of FIGS. 5 (a), 5 (b), and 5 (c), the discharge plate 11 is formed by cutting a plurality of laterally long cuts in a rectangular metal plate. The section is raised vertically to provide a plurality (five in the figure) of discharge plate sections 11a and a plurality (four in the figure) of air passage holes 11b. The discharge plate 11 is electrically connected to the right contact plate 26 made of a conductive metal plate that is exposed at the lower end of the right side plate 15 when the corona discharge part 20 is incorporated in the housing 10. It is electrically connected to the current-carrying member 28 (see FIG. 4).

As shown in FIG. 4, the discharge wire 16 has conductive and elastic coil springs 17 attached to both ends, and when the coil springs 17 incorporate the corona discharge part 20 in the housing 10, The left contact plate 25 exposed at the lower end of the left side plate 14 is electrically connected to a left conducting member 27 that is electrically connected to the left contact plate 25. Further, the discharge wire 16 is locked in the vicinity of the right energization member 28 via the insulating member in the middle of the folded back portion. As a result, the two discharge wires 16 are arranged so as to be stretched between the discharge plate portions 11a of the discharge plate 11 so as to correspond to the air passage holes 11b while being given a suitable tension.

Further, at a position higher than the corona discharge part 20 of the casing 10 (in the rear direction of the air flow), a plurality of anode plates 21 and dust collecting electrode plates 22 are alternately arranged in parallel at equal intervals. The collected parallel electrode group 30 for dust collection is arranged. The anode plate 21 and the dust-collecting electrode plate 22 are arranged so that the front and back surfaces thereof are perpendicular to the front-rear direction, and the longitudinal direction is the left-right direction. For this reason, the gap between the anode plate 21 and the dust collection electrode plate 22 serves as a flow path for air, and clogging does not occur.

The anode plate 21 is made of a metal thin film, a conductive resin film, or the like, as shown in the front view, the top view, and the AA line enlarged cross-sectional view in FIGS. 6A, 6B, and 6C. The conductive portion 21a is covered with a laminating film made of an insulating resin such as polyester from both front and back sides to form a horizontally long rectangular shape. The conductive portion 21a is provided on the upper side of the anode plate 21 along the longitudinal direction, and has a conduction hole 21b for inserting a left conduction shaft 23, which will be described later, in the upper left corner thereof and the left conduction shaft 23. The conductive portion 21a is provided so that it can be electrically contacted. Further, at the lower right corner of the anode plate 21, there is formed a through hole 21c for inserting a later-described right energizing shaft 24.

The dust collecting electrode plate 22 is a thin metal plate such as aluminum as shown in FIGS. 7A, 7 B and 7 C, which is a front view, a top view and a sectional view taken along line BB. It is formed in a horizontally long rectangular shape having substantially the same size as 21, and a plurality of staggered portions 22a and 22b are formed in a staggered manner near the upper and lower ends of both front and back surfaces. The narrowed portion 22a projects beyond the paper surface as seen in FIG. 7, and the narrowed portion 22b projects toward the front side of the paper surface as seen in FIG. The ends of the throttles 22a and 22b are rounded, and have a function of contacting the front and back surfaces of the anode plate 21 and holding the anode plate 21 and the dust collecting electrode plate 22 at equal intervals and in parallel. To do. An energization hole 22c for inserting the right energization shaft 24 is formed in the lower right corner of the dust collecting electrode plate 22. The upper left corner of the dust collecting electrode plate 22 is cut out so as to avoid the left energizing shaft 23.

The plurality of anode plates 21 are commonly inserted into a left current-carrying shaft 23, which has a current-carrying hole 21 b arranged in the front-rear direction near the upper left end of the housing 10, and is passed through the left current-carrying shaft 23. A high voltage is supplied from the current-carrying hole 21b to the conductive portion 21a. In addition, the plurality of anode plates 21 are commonly inserted into the right energizing shaft 24 which is arranged with the through hole 21c facing the lower right end of the housing 10 in the front-rear direction, but the through hole 21c is the laminator. Since it is in the cover film portion, it does not electrically connect to the right energization shaft 24.

The plurality of dust collecting electrode plates 22 are commonly inserted into a right current-carrying shaft 24 which is arranged with the current-carrying hole 22c facing the lower front end toward the front and rear sides of the housing 10. Through 24, the conducting hole 22c is set to the ground potential. Since the left energizing shaft 23 is arranged corresponding to the notch provided in the upper left corner of the dust collecting electrode plate 22, a high voltage is applied from the left energizing shaft 23 to the dust collecting electrode plate 22. There is no such thing.

The rear end portion of the left energizing shaft 23 is supported on the rear plate 13 side, and a high voltage is supplied through the left contact plate 25.

The right energizing shaft 24 penetrates the right side face plate 15 from both ends of a right contact plate 26 fixed to the lower part of the outer face of the right side face plate 15 so as to be integrated with the outer side wall. Both ends are fixed to a pair of tongues extending respectively, and the ground potential is supplied through the right contact plate 26.

Further, as shown in FIG. 2B, a high voltage resistor R1 of, for example, about 10 MΩ is connected between the left energization shaft 23 and the left contact plate 25, and the left energization shaft 23 and the right contact shaft 25 are connected to each other. A high voltage resistor R2 of, for example, about 50 MΩ is connected between the contact plate 26 and the contact plate 26. With these two high-voltage resistors R1 and R2, it is possible to suppress the inrush current flowing in the electrostatic precipitator unit 3 (reduce the electrostatic capacity), and to suppress the arc discharge when the power is turned on.

In FIG. 1B, reference numeral 29 indicates a pair of knobs pivotally attached to the front plate 12, and the respective knobs 29 are erected with respect to the front plate 12 and left and right respectively. By holding it by hand, it serves to facilitate attachment and detachment and replacement of the electrostatic precipitator unit 3 with respect to the electrostatic precipitator.

Next, the operation of the electrostatic precipitator unit 3 according to the present embodiment configured as described above will be described together with the operation of the electrostatic precipitator having the unit.

First, to attach the electrostatic precipitator unit 3 to the electrostatic precipitator in which the electrostatic precipitator unit 3 is not housed, open the front cover (not shown) of the electrostatic precipitator. A pair of knobs 29 of the electrostatic precipitator unit 3 are erected so as to be perpendicular to the front plate 12, and the knobs 29 are held by the left and right hands to lift the electrostatic precipitator unit 3 to lift the electrostatic precipitator. It suffices to insert the electric dust collecting unit 3 into the electric dust collecting unit housing portion. Then, the left contact plate 25 and the right contact plate 26 exposed at the lower ends of the housing 10 come into contact with the high-voltage side contactor (not shown) and the grounding side contactor (not shown) in the power source dust collector, respectively. Then, the power can be supplied to the electrostatic precipitator unit 3.

After the front cover of the electrostatic precipitator is closed, when the electrostatic precipitator is energized, the high voltage power supply (not shown) in the power precipitator collects the left contact plate 25 and the left energization of the electrostatic precipitator unit 3. A high voltage is applied to the discharge line 16 through the member 27, and the discharge plate 11 is set to the ground potential through the right contact plate 26 and the right energization member 28. Therefore, a discharge electric field is generated between the discharge wire 16 and the discharge plate portion 11a, and the generation of positively charged ions from the discharge wire 16 is started.

Further, when electricity is applied to the electrostatic precipitator, a high voltage is applied from the high voltage power source in the power precipitator to the conductive portion 21 a of the anode plate 21 through the left contact plate 25 of the electrostatic precipitator unit 3 and the left energizing shaft 23. While being applied, the dust collecting electrode plate 22 is set to the ground potential through the right contact plate 26 and the right energizing shaft 24. For this reason, a dust collecting electric field is generated between the conductive portion 21a and the dust collecting electrode plate 22, and the positively charged dust passing between the conductive portion 21a and the dust collecting electrode plate 22 collects the dust collecting electrode plate. It will be attracted to the 22 side by Coulomb force.

Further, when electricity is applied to the electrostatic precipitator, the motor 5 is rotated and the fan 6 causes a flow of air from the bottom to the top in the electrostatic precipitator. Then, the dirty air is sucked through the intake port 1 on the lower surface side of the electrostatic precipitator and reaches the prefilter 2 first.

The pre-filter 2 traps in the fibers of the pre-filter 2 if the dust is larger than the mesh of the pre-filter 2, and passes the pre-filter 2 if it is smaller than the mesh.

The air that has passed through the pre-filter 2 then reaches the electrostatic precipitator unit 3.

In the electrostatic precipitator unit 3, dust in the air is first charged to a positive charge by the corona discharge unit 20. That is, since positively charged ions are generated from the discharge line 16 by the discharge electric field between the discharge wire 16 and the discharge plate portion 11a, the dust in the air passing through the corona discharger 20 has positively charged ions. It adheres and is positively charged.

Next, the dust in the air, which is positively charged, reaches the parallel electrode group 30 for dust collection, and due to the Coulomb force by the dust collecting electric field formed between the positive electrode plate 21 and the dust collecting electrode plate 22. Dust collecting is electrically attracted to and adsorbed by the electrode plate 22.

The air that has passed through the electrostatic precipitator unit 3 has its odor removed by passing through the deodorizing filter 4, passes through the fan 6, and becomes clean and clean air from the exhaust port 7 into the main body of the apparatus. It is discharged outside.

By the way, when the electrostatic precipitating unit 3 becomes dirty due to long-term use or the like, the electrostatic precipitating unit 3 can be taken out and cleaned, or replaced with a new one, so that the precipitating efficiency can be easily maintained. can do. In order to remove the electrostatic precipitator unit 3 from the electrostatic precipitator, a pair of knobs 29 are perpendicular to the front plate 12 as when the electrostatic precipitator unit 3 is attached to the electrostatic precipitator. As described above, each of them may be raised, and the respective knobs 29 may be held by the left and right hands to pull out the electrostatic precipitating unit 3 from the electrostatic precipitator.

When the electrostatic precipitator unit 3 is detached from the electrostatic precipitator for cleaning, there is no possibility that voltage will be supplied to the electrostatic precipitator unit 3, and the user or the like will not be able to use water, oil, soapy water or the like. It is possible to perform cleaning by using such as.

In the above embodiment, an example in which one electrostatic precipitator unit 3 is housed in the electrostatic precipitator has been described, but 2 to 4 electric precipitator units 3 are installed in the electrostatic precipitator. By installing in series along the flow of, the dust collection efficiency of the electrostatic precipitator can be further improved. However, it goes without saying that when two to four electric dust collecting units 3 are installed in series along the flow of air, it is necessary to increase the blowing pressure of the fan 6.

[0039]

[Effect of the invention]

 As described above, according to the present invention, the high voltage applied between the discharge electrode of the corona discharge part and the ground electrode, and the high voltage applied between the anode plate and the dust collection electrode plate of the parallel electrode group for dust collection. The high voltage is the same, and the corona discharge part and the parallel electrode group for dust collection are housed in the same case. Therefore, when the corona discharge part is contaminated with dust, the parallel electrode for dust collection is The effect is that they can be exchanged together as a group. Therefore, it is possible to prevent an accident such as a user touching a high voltage and receiving an electric shock when the corona discharge unit is cleaned.

[Brief description of the drawings]

1 (a) and 1 (b) are a partially fragmented plan view (top view) and a front view of an electrostatic precipitator unit according to an embodiment of the present invention.

2A and 2B are a bottom view and a partially crushed rear view of the electrostatic precipitator unit according to the present embodiment.

3 (a) and 3 (b) are a left side view and a right side view of an electrostatic precipitating unit according to the present embodiment.

FIG. 4 is a top view of a corona discharge part of the electrostatic precipitator unit according to the present embodiment.

5 (a), (b) and (c) are a plan view, a side view and a front view showing the discharge plate in FIG.

6 (a), (b) and (c) are a front view, a top view and an AA line enlarged sectional view showing the anode plate in FIG.

7 (a), (b) and (c) are a front view, a top view and a cross-sectional view taken along line BB of the dust collecting electrode plate in FIG.

8A and 8B are a transparent front view and a side sectional view showing an outline of an electrostatic precipitator in which an electrostatic precipitator unit according to an embodiment of the present invention is arranged.

[Explanation of symbols]

 1 Inlet 2 Prefilter 3 Electric Dust Collection Unit 4 Deodorizing Filter 5 Motor 6 Fan 7 Exhaust 10 Housing 11 Discharge Plate 11a Discharge Plate 11b Air Passage Hole 12 Front Plate 13 Rear Plate 14 Left Side Plate 15 Right Side Plate 16 Discharge Line 20 Corona Discharge Section 21 Anode Plate 21a Conductive Section 21b Conduction Hole 21c Through Hole 22 Dust Collection Electrode Plate 22a Throttling Section 22b Throttling Section 22c Conduction Hole 23 Left Current Shaft 24 Right Current Shaft 25 Left Contact Plate 26 Right Contact Plate 27 Left Current Member 28 Right energizing member 29 Knob 30 Dust collecting parallel electrode group R1, R2 High voltage resistance

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technology display location B03C 3/82 B03C 3/82 (72) Creator Teruyuki Yamada 1-28-15 Shinjuku-ku, Tokyo No.Silver Seiko Co., Ltd.

Claims (7)

[Utility model registration claims] 1. A corona discharge consisting of a pair of contacts respectively contacting a high-voltage power supply terminal and a ground terminal in an electrostatic precipitator, and a discharge wire and a discharge plate electrically connected to the pair of contacts. Part, and a plurality of positive electrode plates and dust collecting electrode plates, which are provided at a position behind the air flow with respect to the corona discharge part and electrically connected to the pair of contacts, are arranged in parallel at equal intervals. And a case in which the pair of contacts, the corona discharge part, and the parallel electrode group for dust collection are integrally housed and arranged. . 2. The discharge plate comprises a rectangular metal plate having a plurality of laterally long cuts, and thereafter, a segment portion is vertically raised to simultaneously form a plurality of discharge plate portions and a plurality of air passage holes. An electrostatic precipitator unit according to claim 1. 3. A conductive and elastic coil spring is attached to both ends of the discharge wire, and each coil spring is electrically connected to one current-carrying member, and the middle portion of the discharge wire is separated by an insulating member. The electrostatic precipitator unit according to claim 1, which is locked in the vicinity of the current-carrying member. 4. The plate-shaped member in which the anode plate is formed of a plate-shaped member in which a conductive portion is laminated with an insulating resin, and the dust collection electrode plate has zigzag portions in which zigzag portions protruding on both front and back surfaces of a metal plate are provided in a staggered manner. 2. The electrostatic precipitator unit according to claim 1, wherein the electrostatic precipitator is formed by the diaphragm part and holds the anode plate and the dust collector plate at equal intervals. 5. The electrostatic precipitator according to claim 1, wherein a plurality of anode plates of the parallel electrode group for dust collection are commonly inserted into an energizing shaft through an energizing hole to supply a high voltage. unit. 6. The electricity collector according to claim 1, wherein the plurality of dust collecting electrode plates of the dust collecting parallel electrode group are commonly inserted into the current-carrying shafts through the current-carrying shafts to be at the ground potential. Dust unit. 7. The electrostatic precipitator unit according to claim 1, further comprising a pair of knobs rotatably mounted on a front wall of the housing.