JPH0525713Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to an air dust collection unit.
More specifically, the present invention relates to an improvement in an air dust collecting unit that can be detachably installed in an air cleaner used in, for example, a general home, an office, or a semiconductor production factory.

[Prior Art] A conventional air dust collecting unit of this type has a plurality of through holes b, b...
discharge counter electrodes a and discharge electrodes c, c, which protrude pointed discharge needles d, d, located at the center of each through hole b, and these discharge counter electrodes a and discharge electrodes c, c
A device consisting of dust collecting electrodes e, e... and dust collecting counter electrodes f, f... arranged alternately and parallel to each other on the air downstream side of ..., or as shown in Fig. 11,
The discharge counter electrode a is provided with connection legs g, g, and the connection legs g, g are engaged with dust collecting electrodes e, e, etc., are used. In these air dust collecting units, for example, discharge electrodes c, c... and dust collecting counter electrodes f, f... are connected to the cathode of power source h, and discharge counter electrodes a and dust collecting electrodes e, e... are connected to the anode of power source h. Connect the discharge electrodes c, c... and dust collection counter electrodes f, f... to the opposite poles of the discharge electrodes a and dust collection electrodes e, e..., and then connect the discharge electrodes c, c... and the dust collection counter electrodes f, f... The structure is such that dust in the air charged by corona discharge generated between the counter electrode a and the counter electrode a is collected by the dust collecting electrodes e, e, . . .

[Problems to be solved by the invention] However, the former, that is, the discharge electrodes c, c...
Discharge counter electrode a, dust collection electrode e, e... and dust collection counter electrode f, f
. . , which are arranged separately, have the problem that the number of types of constituent members increases, making assembly complicated and requiring more man-hours, and that space cannot be used effectively. In addition, in the latter case, which connects the discharge counter electrode a and the dust collecting electrodes e, e..., the number of constituent members can be reduced compared to the former one, but the discharge counter electrode of the dust collecting electrodes e, e... There is a risk that the engagement with a may become uncertain,
Therefore, there is a problem in that the dust collection electrodes e, e... are deformed, resulting in a decrease in dust collection efficiency.

[Means for solving the problem] This invention was made with the intention of solving the above problem, and in order to solve the above technical problem, the discharge counter electrode and the dust collecting electrode were integrated into a box-like structure. The dust collection counter electrode and discharge electrode, which is configured in the body and held in parallel by a spacer, is removably and electrically insulatively engaged with the box-shaped body consisting of the discharge counter electrode and the dust collection electrode. The present invention aims to provide an air dust collection unit characterized by:

In other words, this invention has a box-shaped discharge counter electrode that is open on the air downstream side and has a large number of through holes on the air upstream side, and has a plurality of mutually parallel dust collecting electrode plates installed on the air downstream side. and a plurality of dust collecting counter electrodes, each having a dust collecting counter electrode part disposed in parallel between the dust collecting electrode plate and a plurality of pointed discharge needles whose tips are located at the center of each of the through holes. It consists of an electrode and a spacer that connects and holds the dust collection counter electrode/discharge electrode parallel to each other and in a conductive state, and the spacer removably engages with a notch provided on the air downstream side of the box-shaped body. It is an object of the present invention to provide an air dust collecting unit characterized by forming an insulating part.

In this invention, the box-shaped body may be of any type as long as it has a plurality of dust-collecting electrode plates arranged in parallel to each other, but it is preferably formed of a conductive material, with two facing It is better to use the side pieces as dust collecting electrode plates. Further, the above spacer may be any spacer as long as it connects the dust collection counter electrode and discharge electrode in parallel with each other in a conductive state and is electrically insulated from the box-shaped body consisting of the discharge counter electrode and the dust collection electrode plate. Preferably, the spacer includes a conductive rod that penetrates and connects to the dust collection counter electrode/discharge electrode, and an electrically insulating sleeve into which the conductive rod is fitted to maintain the distance between the dust collection counter electrode/discharge electrode. and an electrically insulating cap that removably engages with a notch provided on the air downstream side of the box-like body. Further, in this case, the notch of the box-like body is formed in the shape of a keyhole having a bulging part and a narrow part, and the spacer is formed with a groove part that engages with the bulge part and slides in the narrow part. It is preferable to form a neck.

[Effect] The above technical means works as follows.

As mentioned above, the dust collecting electrode plates are arranged parallel to each other on the air downstream side of the box-shaped discharge counter electrode which is open on the air downstream side and has many through holes on the air upstream side, and the dust collecting electrode plates are arranged parallel to each other. The dust collection counter electrode and discharge electrode, which has a dust collection counter electrode part arranged parallel to the , and has a pointed discharge needle whose tip is located in the center of each through hole, are connected and held parallel to each other and in a conductive state by a spacer. At the same time,
By forming an electrically insulating part on the spacer that removably engages with a notch provided on the air downstream side of the box-like body, it can be assembled to the discharge counter electrode to prevent deformation of the dust collecting electrode, and By engaging a spacer that holds the dust collection counter electrode and discharge electrode in parallel with the notches provided in the discharge counter electrode and the dust collection electrode, the positioning of the discharge counter electrode and the discharge electrode becomes accurate, and the dust collection electrode and The positioning with the dust collecting counter electrode part can be maintained accurately.

[Example] An example of this invention will be described below based on the drawings.

Fig. 1 is a plan view showing a part of the air dust collection unit of this invention in cross section, and Fig. 2 is a front view of Fig. 1 showing a part of it in cross section. , a box-shaped discharge counter electrode 10 having an opening 12 on the air downstream side and a large number of through holes 14, 14... on the air upstream side, and a plurality of dust collecting electrode plates 16 parallel to each other on the air downstream side, 16..., a plurality of dust collection counter electrode parts 22 disposed in parallel between the dust collection electrode plates 16, 16, and whose tips are located at the center of each through hole 14. A plurality of dust collection counter electrodes/discharge electrodes 20, 20... having pointed discharge needles 24, 24... and dust collection counter electrode/discharge electrodes 20, 2
The main part is constituted by a spacer 30 that connects and holds the 0... in parallel with each other and in a conductive state.

The box-shaped body 10' consisting of the discharge counter electrode 10 and the dust collecting electrode plates 16, 16, etc. is made of stainless steel, for example.
It is formed into a rectangular box shape of a conductive metal such as an aluminum alloy, or a resin base material whose surface including at least the through hole 14 forming the discharge counter electrode 10 is coated with a conductive metal. A spacer 3 is attached to each of the pieces 11 and 11 on both sides in the longitudinal direction.
Notches 40, 40, . In this case, the above-mentioned through hole 1
The shape of 4 is formed by a circle, a square, or a regular polygon such as a regular hexagon. Moreover, the notch 40 is
It is formed into a keyhole shape having a circular bulge 42 and a narrow portion 44 extending from a part of the bulge 42 toward one end of the side. In addition, the side pieces 11 of the box-like body 10',
A handle 15 used when inserting and removing the unit into the air cleaner 50, which will be described later, is attached to the handle 11 in a tiltable manner, and a stopper body 17 used for fixing the unit to the air cleaner 50 is attached to both ends of the handle 15. , 17 are each rotatably mounted (see Fig. 3).

The dust collecting electrode plate 16 is formed of a conductive metal plate such as stainless steel or aluminum alloy, and the mounting pieces 18, 18 bent at both ends are attached to the end side piece 13 of the box-like body 10'. , 13 by fixing means such as welding, and are arranged parallel to each other within the box-shaped body 10'. This dust collecting electrode plate 16
There is a notch 1 on the air downstream side of which the spacer 30 engages.
9 is bored (see Figure 4).

The dust collection counter electrode/discharge electrode 20 has a plate thickness, for example.
It is made of a conductive metal plate having a strength of 0.1 to 3.0 mm, preferably 0.2 to 1.0 mm, such as stainless steel, common steel, copper, brass, aluminum, etc. As shown in Figure 3, the dust collecting counter electrode plate Serrated discharge electrode needles 24, 24, . . . are provided protruding from one side of the rectangular dust collection counter electrode portion 22 facing the dust collecting electrode 16. Then, it is arranged in the box-like body 10' with an appropriate distance maintained by the spacer 30, and the dust collection counter electrode part 22 faces the dust collection electrode plate 16, and the tip of the pointed discharge electrode needle 24 is located at the center of the through hole 14 of the discharge counter electrode 10.

On the other hand, as shown in FIG. 5, the spacer 30 is made of a conductive metal rod 32 which is connected through the dust collection counter electrode/discharge electrode 20 to maintain the distance between the dust collection counter electrode/discharge electrode 20. Electrical insulating sleeves 34, 34, etc. made of plastic, etc., into which the rod 32 is fitted, and electrical insulation sleeves, such as plastic, which are releasably engaged with notches 40 provided on the air downstream side of both sides 11, 11 of the discharge counter electrode 10. It is composed of an insulating cap 36. In this case, the cap 36 has a groove 37 that engages with the bulge 42 of the notch 40 and a neck 38 that slides in the narrow part 44 of the notch 40. When assembling or removing the dust collecting counter electrode/discharge electrode 20, 20... with the spacer 30 configured in this way to the box-shaped body 10', the neck 38 is attached as shown on the left side in FIGS. 6 and 7. The cap 36 is rotated so that it can be slid into the narrow part 44, and the cap 36 is assembled or removed.
When fixing after assembling to the box-like body 10',
As shown on the right side in FIGS. 6 and 7, the neck 38 is
Rotate 90 degrees to engage the groove 37 with the bulge 42.

In the air dust collection unit of this invention constructed as described above, at least one of the spacers 30, 30... has a conductive rod 32 that penetrates the electrically insulating cap and is exposed to the outside (the third 3), the exposed portion is connected to the cathode of a power source (not shown), and the discharge electrode 10 and the dust collecting electrode plate 16 are connected to the exposed portion.
The anode of the power supply is connected to the .
Then, inside the box-like body 10', a dust collection counter electrode/discharge electrode 20,
20... is used in the air cleaner 50 in the assembled state, and as shown in FIGS. 8 and 9, for example, it has an air suction port 52 at the top and an air outlet 5 at the bottom.
4, the discharge counter electrode 10 is assembled into the air cleaner 50 with the through holes 14, 14, . . . positioned upwardly. Note that a cross flow fan 56 such as a Sirotskov fan is disposed on the downstream side of the lower part of the air purifier 50, and the cross flow fan 56 allows the air suction port 5 to
The dust in the contaminated air sucked in from 2 is charged at the discharge section of the air dust collection unit of this invention, and then collected at the dust collection section and supplied into the room from the air outlet 54 as clean air. It is becoming more and more common. Note that a damper 57 is provided on the suction side of the air cleaner 50, and an exhaust side damper 58 and a direction adjustment valve 59 are provided on the outlet side, and as shown in FIGS.
In the figure, the reference numeral 60 is a control device 60 having a detection means such as a dirt sensor, the reference numeral 61 is an electrical component, and the reference numeral 62 is a deodorizing filter.

[Effects of the invention] As explained above, the air dust collecting unit of this invention has a discharge counter electrode with a large number of through holes on the air upstream side, and a plurality of parallel discharge electrodes on the air downstream side. a box-shaped body having a dust collection electrode plate therein, and a plurality of pointed discharge needles having a dust collection counter electrode part disposed in parallel between the dust collection electrode plates, and whose tips are located at the center of each through hole. a plurality of dust collection counter electrodes and discharge electrodes having
It consists of a spacer that connects and holds the dust collection counter electrode/discharge electrode parallel to each other and in a conductive state, and the spacer has an electrically insulating part that removably engages with a notch provided on the air downstream side of the box-shaped body. As a result, the following effects can be obtained.

1. Since the dust collection counter electrode/discharge electrode is arranged with a spacer inside the box-shaped body in which the dust collection electrode plate is fixed, assembly is easy, the setting position of each part is accurate, and the dust collection electrode and It is possible to prevent harmful effects caused by deformation of the dust collection counter electrode, etc.

2 It is easy to clean the unit as it is, and the dust collection counter electrode/discharge electrode can be easily attached and detached from the discharge counter electrode, making it easy to remove dust stuck to the dust collection electrode, and reducing maintenance. This makes it easy to replace even in the event of a failure.

3. Since it can be divided into two types: a box-shaped body and a dust collection counter electrode/discharge electrode group, the whole can be made compact and can be easily incorporated into not only small air cleaners but also large air cleaners.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing a part of the air dust collection unit of this invention in cross section, Fig. 2 is a front view of Fig. 1 showing a part in cross section, and Fig. 3 is an exploded perspective view of the air dust collection unit. , FIG. 4 is a sectional view thereof, FIG. 5 is a sectional view of essential parts of the air dust collection unit in an assembled state, FIG. 6 is a sectional view showing the installation state of the spacer in this invention, and FIG. - sectional view, Figure 8 is a partially sectional perspective view of the air dust collection unit assembled to the air cleaner, Figure 9 is its front sectional view, and Figure 10 is
1 and 11 are schematic cross-sectional views showing a conventional air dust collecting section. Explanation of symbols, 10... Discharge counter electrode, 10'... Box-shaped body, 12... Opening, 14... Through hole, 16... Dust collecting electrode plate, 20... Dust collecting counter electrode and discharge electrode, 22... Collection Dust counter electrode part, 24... Pointed discharge electrode needle, 30... Spacer, 32... Conductive rod, 34... Electrically insulating sleeve, 36... Cap, 37... Groove, 38
...Neck, 40...Notch, 42...Bulge, 44
...Narrow area.

Claims (1)

[Claims for Utility Model Registration] (1) A discharge counter electrode that is open on the air downstream side and has a large number of through holes on the air upstream side, and has a plurality of dust collecting electrode plates parallel to each other on the air downstream side. A plurality of discharge needles each having a box-shaped body disposed therein, a dust collection counter electrode part disposed in parallel between the dust collection electrode plate, and a plurality of pointed discharge needles whose tips are located at the center of each of the through holes. It consists of a dust collection counter electrode and discharge electrode, and a spacer that connects and holds the dust collection counter electrode and discharge electrode parallel to each other and in a conductive state, and is removable through a notch provided in the spacer on the air downstream side of the box-shaped body. An air dust collecting unit characterized by forming an electrically insulating part that engages with the air dust collecting unit. (2) The air dust collection unit according to claim 1, wherein the two opposing side pieces of the box-like body also serve as dust collection electrode plates. (3) The spacer includes a conductive rod that connects through the dust collection counter electrode/discharge electrode, an electrically insulating sleeve into which the conductive rod is fitted to maintain the distance between the dust collection counter electrode/discharge electrode, and a box-shaped body. and an electrically insulating cap that is removably engaged with a notch provided on the air downstream side of the air dust collecting unit. (4) The notch of the box-like body is formed in the shape of a keyhole having a bulge and a narrow part, and the spacer has a groove that engages with the bulge and a neck that slides on the narrow part. The air dust collecting unit according to claim 1, which is formed by a utility model.