JP2520724Y2 - Electric dust collector collector - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a collector for an electric dust collector.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 4, an electric dust collector includes a prefilter 1 for removing large dust, an ionizer 2 for charging and ionizing dust particles that are sucked, and an ionizer. Although not shown in the figure, an air pump for forming an air flow 4 for inhaling the dust is arranged behind them, and a collector 3 for adsorbing and removing the dust particles is provided. It is housed in the body.

The principle of the electric dust collector is as shown in FIG.
1 is applied with a high voltage between the ionization line 22 and a corona discharge to cause the dust particles that come in with the air stream 4 to be charged and ionized, and then the ionized dust particles are placed in the air stream 4. It is carried to the collector 3, where positive and negative voltages are applied to the multiple collector plates 31, 31, ... Every other plate to adsorb ionized dust particles to the collector plate 31 of the opposite polarity. To remove.

As shown in FIGS. 4 and 5, the collector 3 is generally formed by stacking a large number of collector plates 31, 31, ... Between the left and right frames 32, 32 to form an upper frame 33. It is assembled as a frame with the lower frame 34. The structure of the collector plate 31 of the collector 3 and the left and right frames 32, 32 is
Conventionally, the structure is as follows. That is, as shown in FIG. 7 and FIG. 8, an electrode plate insertion groove 32a having a substantially U-shaped cross-section that opens inward is formed in each of the opposing inner portions of the pair of left and right frames 32, 32. In the middle portion of the plate insertion groove 32a in the left-right direction
The locking ridge 32b and the electrode plate positioning guide ridge 32c are arranged so as to approach each other from the front and rear inner side surfaces.
And are projectingly formed in two rows.

Further, the many collector plates 31 are
Locking portions 31b are formed in a protruding manner at both left and right ends of a collector plate base material 31a made of an insulating material such as polypropylene that is long and narrow in the left and right. One end of one locking portion 31b is provided with an electrode plate insertion groove 32a. Electrode contact bulging portion 3 which bulges slightly wider in the front and rear direction so as to be locked on the inner side of the locking projection 32b.
1c is formed, and a conductive paint strip 31d is applied to at least one of the upper surface and the lower surface of the collector plate base material 31a so as to be elongated in the left-right direction, and one end of the conductive paint strip 31d is swollen for electrode contact. It is made to reach the tip of the portion 31c, and the other left and right ends do not reach the tip of the locking portion 31b.

A pair of left and right frames 32, 32 are arranged so as to face each other, and a large number of collector plates 31 are provided with electrode contact bulging portions 31c to which the conductive paint strips 31d are applied to their tips, and this electrode. Inserting the engaging portion 31b into the electrode plate insertion groove 32a of each of the left and right frames 32, 32 so that the engaging portion 31b in which the contact bulging portion 31c is not formed is alternately overlapped with each other, the electrode contact expanding portion 31b is inserted. The protruding portion 31c is stacked while being locked to the inner side of the locking projection 32b. Then, an electrode plate 35 having a substantially U-shaped cross section that is elongated in the vertical direction is inserted into the electrode plate insertion grooves 32a of the left and right frames 32, 32 so as to be guided by the front and rear electrode plate positioning guide ridges 32b. Then, these left and right electrode plates 32,
Reference numeral 32 denotes an electrode contact bulge 31 of each collector plate 31.
The collector 3 is constructed by assembling the tip of c so as to elastically contact with each other, and further assembling the upper frame 33 and the lower frame 34 together.

In such a collector 3, a positive potential is applied to one of the left and right electrode plates 35, 35,
By grounding the other to ground potential, when dust particles positively ionized by the ionizer 2 enter the collector 3, they are adsorbed and removed by the conductive paint strip 31d in contact with the ground potential electrode plate. Is done.

[0008]

However, in such a conventional collector of the electric dust collector, one of the locking portions 31b of the collector plate 31 remains straight,
Since only the other electrode contact bulge 31c is locked by the locking projection 32b and is prevented from coming off,
If the size of the electric dust collector becomes large and a collector plate with a long length is adopted, the collector plate base material is flexible like plastic and easily bends. The other end may come off the frame 32 and fall off.

Further, as is apparent from FIG. 8, the electrode contact bulging portion 31c alone contacts the electrode plate 35, and the locking portion 31b on the side where the electrode contact bulging portion 31c is not formed.
Since it does not come into contact with the electrode plate 35, there is also a problem that the electrical contact between the electrode plate 35 and the collector plate 31 is not sufficient.

Further, in the collector of the conventional electric dust collector, the locking projections 32b and the electrode plate contacting guide projections 32c are formed in two rows in the electrode plate insertion grooves 32a of the left and right frames 32 to form the collector plate 31. Locking part 31
The bulging portion 31c for contacting the electrode of FIG.
Since it is necessary to engage with the engaging projection 32b in the narrow space between 2c, it cannot be made sufficiently large, and the elastic contact with the electrode plate 35 is made sufficiently strong. However, there is a problem that the reliability of electrical performance cannot be obtained sufficiently, and at the same time, it is easy to come off due to external force,
There was also a problem that the collector plate was not sufficiently supported.

The present invention has been made in view of the above conventional problems, and the collector of an electric dust collector is capable of supporting a collector plate sufficiently strongly and having high reliability of electric performance. The purpose is to provide.

[0012]

[0013]

The present invention relates to a collector of an electric dust collector that collects dust by adsorbing dust particles charged by an ionizer to a conductive paint band of a collector plate charged to the opposite polarity. In each of the opposite inner portions of the frame, an electrode plate insertion groove having a substantially U-shaped cross section, which opens in the opposite inner direction, is formed. A locking projection is formed so as to be relatively close to each other, an electrode contact space is formed on the groove back side of the locking projection, and the electrode contact space is formed at the groove bottom bottom. An electrode plate positioning guide ridge protruding inward is formed, and a horizontal cross-sectional shape of the electrode plate insertion groove is formed on both left and right ends of a collector plate base made of an insulating material that is long and narrow on the left and right. Electrode contacts that form locking parts having substantially the same shape, and bulge back and forth so as to be locked at the tip of each locking part on the inner side of the groove of the locking projection of the electrode plate insertion groove. Forming a bulge portion, a conductive paint band on at least one of the upper surface or the lower surface of the collector plate base material, one of the left and right ends of the conductive paint band to reach the tip of the electrode contact bulge, The other end of the left and right ends is formed into a collector plate by coating so as not to reach the tip of the bulging part for electrode contact, and the pair of left and right frames are arranged to face each other. The conductive paint strips are applied to the tip of the engaging portion and the end portions not formed to the tip are alternately overlapped with each other so as to engage with the electrode plate insertion grooves of the left and right frames. Insert and lock the stopper Then, the electrode plates, which are elongated in the vertical direction and have a substantially U-shaped cross section, are guided in the electrode contact spaces of the electrode plate insertion grooves of the left and right frames by the electrode plate positioning guide ridges. And the tip of the electrode contact bulge of each collector plate elastically contacts the left and right electrode plates, and the upper frame and the lower end of the left and right frames are respectively connected to the upper frame and the lower frame. The lower frame is assembled.

[0014]

[0015]

In the collector of the electric dust collector of the present invention, the electrode plate positioning guide ridges are formed at the bottom of the electrode plate insertion grooves of the left and right frames, and the electrode plates are guided along the guide ridges. Since it is inserted into the plate insertion groove, it is possible to widen the electrode contact space of each of the left and right frames, and the electrode contact space of each of the left and right ends of the collector plate can be formed in the wide electrode contact space. Since the bulging portion for electrode contact is inserted and the bulging portion for electrode contact is locked at the groove inner side of the locking projection of the electrode plate insertion groove, a wide electrode contact space for each of the left and right frames. The electrode contact bulges at the left and right ends of the collector plate can be enlarged according to the shape of the section,
As a result, the engagement with the electrode plate insertion groove can be strengthened and the contact with the electrode plate can be strengthened. As a result, even if an external force acts in the lateral direction, each collector plate can be placed on both the left and right sides. Both ends of the frame can be firmly locked and supported by the frame so as not to fall out of the frame and fall out, and furthermore, high electrical performance can be maintained.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings.

A general electric dust collector has the construction shown in FIGS. 4 to 6 as described in the section of the conventional example. And
The collector 3 has the configuration shown in FIGS. That is, in the pair of left and right frames 32, 32, electrode plate insertion grooves 32a having a substantially U-shaped cross-section opening inward are formed in the inner portions facing each other. At the intermediate portion, the locking projections 3 are arranged so as to be relatively close to each other from the front and rear inner side surfaces.
2b is formed in the front and rear to form an electrode contact space 32d on the inner side of the locking projection 32b, and an electrode plate positioning guide projection protruding inwardly on the inner bottom of the electrode contact space 32d. The strip 32e is formed.

Further, the collector plate 31 has electrode strip insertion grooves 32 of a frame 32 at both left and right ends of a strip-shaped collector plate base material 31a made of an insulating material which is elongated in the left and right direction.
A locking portion 31e having a shape substantially corresponding to the horizontal cross-sectional shape of a is formed, and the tip of each locking portion 31e is locked to the inner side of the locking projection 32b of the electrode plate insertion groove 32a. An electrode contact bulge 31f that bulges widely in the front and back is formed, and a conductive paint band 31d is formed on at least one of the upper surface and the lower surface of the collector plate base material 31a. Electrode contact bulge 31f
Of the electrode contact bulging portion 31f so as not to reach the tip of the bulging portion 31f for electrode contact.

In assembling the collector 3, as shown in detail in FIGS. 1 and 3, a pair of left and right frames 32, 32 are arranged on both sides of the lower frame 34 so as to face each other, and a large number of collector plates 31 are provided. The conductive paint strips 31d are coated with the end portions of the engaging portions 31e so that the end portions of the engagement portion 31e and the end portions of the engaging portions 31e that are not formed are alternately overlapped with each other so that the electrode plate insertion grooves 3 of the left and right frames are formed.
2a is stacked while inserting and locking the locking portion 31e, and the electrode plate 35 having an elongated U-shaped cross section in the vertical direction is formed in the space for electrode contact of the electrode plate insertion groove 32a of each of the left and right frames 32, 32. The electrode plate positioning guide ridge 32e is inserted into the portion 32d so as to guide it. And finally, the upper frame 3
By assembling 3, the assembling of the collector 3 is completed.

As shown in detail in FIG. 2, by inserting the above-mentioned electrode plate 35, the electrode contact bulging portion 31f of each collector plate 31 comes into elastic contact with the electrode plate 35.

In the thus assembled collector 3, as described in the conventional example with reference to FIGS. 4 to 6, one of the left and right frames 32, 32 is applied with a positive high potential and the other is grounded. By applying a potential, a positive potential and a ground potential are alternately applied in the vertical direction, and when the dust particles positively ionized by the ionizer 2 are guided to the collector 3, they are repelled by the collector plate 31 having a positive potential, Ground potential collector plate 31
The conductive paint strip 31d is adsorbed and removed.

Further, in this collector 3, electrode contact bulges 31f are formed on the locking portions 31e at both ends of the collector plate base material 31a, which are locking protrusions of the electrode plate insertion groove 32a of the frame 32. Even if a large external force is applied from the side, it is locked to the strip 32b and does not come out inward, so that a mechanically strong structure is formed.

Further, the contact state between the electrode plate 35 and each collector plate 31 is, as shown in detail in FIG. 2, the electrode contact bulging portions 31f of the upper and lower collector plates 31.
Electrodes plate 3 due to their repulsive force overlapping each other
5, the contact pressure can be made large, the stability of the electrical connection with the electrode plate 35 can be obtained, and the electrical performance of the collector 3 can be stabilized. it can.

The invention of claim 1 of this application is not limited to the above-mentioned embodiment, and the inner opening of the electrode plate insertion groove of the left and right frames is narrower than the inner space. Also, if the locking parts at both ends of the collector plate are bulged at the tip side according to the cross-sectional shape of the electrode plate insertion groove, the locking parts at both ends of the collector plate are inserted by the external force from the side. It is possible to prevent it from coming out of the groove, and the shape is not particularly limited to that of the embodiment.

Further, in the above-mentioned embodiment, for convenience of description, it is described that a large number of collector plates are horizontally stacked and assembled between the left and right frames, but this electric dust collector is rotated vertically and horizontally. Of course, the entire electric dust collector may be mounted horizontally on the ceiling, and the orientation of the embodiment is not limited to the literal one.

[0026]

[0027]

According to the present invention, the electrode plate insertion guide ridge projecting inward is formed at the bottom of the electrode contact space at the inner part of the electrode plate insertion groove of the left and right frames. Since there is no guide ridge protruding from the front and rear inner wall portions of the electrode contact space in a direction approaching each other, this electrode contact space can be made wide, and this wide electrode contact space Since the electrode contact bulges at the left and right ends of the collector plate are inserted into these parts, and the electrode contact bulges are locked on the inner side of the locking projection of the electrode plate insertion groove. In addition, the electrode contact bulges at the left and right ends of the collector plate can be enlarged according to the shape of the wide electrode contact spaces of the left and right frames, and the engagement with the electrode plate insertion groove can be increased accordingly. Can be In addition, since the shape of the electrode contact bulges at the left and right ends of each collector plate is the same, when the electrode contact bulges at the top and bottom collector plates are superposed on each other, the repulsive force between them makes the electrode plate stronger. Can be contacted, and as a result of these, according to the present invention,
Even if an external force is applied in the lateral direction, both ends of each collector plate can be firmly locked and supported by the frames on both the left and right sides so that they do not come out from there and do not fall out, and besides, high electrical performance can be maintained. , A reliable collector can be configured.

[Brief description of drawings]

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

FIG. 2 is an enlarged front view showing a contact state between a collector plate and an electrode plate of the above embodiment.

FIG. 3 is an exploded perspective view of the above embodiment.

FIG. 4 is an exploded perspective view of a general electric dust collector.

FIG. 5 is a perspective view of a general collector.

FIG. 6 is an explanatory view of the principle of a general electric dust collector.

FIG. 7 is a horizontal sectional view of a conventional example.

FIG. 8 is an enlarged front view showing a contact state between a collector plate and an electrode plate of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Pre-filter 2 ... Ionizer 3 ... Collector 31 ... Collector plate 31a ... Collector plate base material 31d ... Conductive paint strip 31e ... Locking portion 31f ... Electrode contact swelling portion 32 ... Frame 32a ... Electrode plate insertion groove 32b ... Engagement Stop protrusion 32d ... Space for electrode contact 32e ... Guide protrusion for electrode plate positioning 33 ... Lower frame 34 ... Upper frame 35 ... Electrode plate

Claims (1)

(57) [Scope of utility model registration request] 1. A collector of an electric dust collector in which dust particles charged by an ionizer are adsorbed by a conductive paint band of a collector plate charged in an opposite polarity to collect dust, and the inside portions of a pair of left and right frames are opposed to each other. A pair of U-shaped cross-section electrode plate insertion grooves that open in the opposite direction and are formed so as to be relatively close to each other from the front and rear inner side surface parts at the left-right intermediate portions of the electrode plate insertion grooves. An electrode contact positioning portion is formed by projecting a stop protrusion, and an electrode contact space is formed on the groove inner side than the locking protrusion, and the electrode plate positioning protruding toward the inner side at the groove bottom of the electrode contact space. Guide protrusions are formed on both sides of the collector plate base made of an insulating material that is long and slender on the left and right, and the locking portions have a shape that substantially matches the horizontal cross-sectional shape of the electrode plate insertion groove. And a bulging portion for electrode contact which bulges back and forth so as to be locked on the inner side of the groove of the locking ridge of the electrode plate insertion groove, is formed at the tip of each locking portion, A conductive paint band is provided on at least one of the upper surface and the lower surface of the collector plate base material, and one of the left and right ends of the conductive paint band reaches the tip of the bulging portion for electrode contact,
The other end of the left and right sides is formed into a collector plate by coating so as not to reach the tip of the bulging portion for electrode contact, and the pair of left and right frames are arranged to face each other. The conductive paint strips are applied to the end portions of the engaging portion and the end portions not formed to the tip end are alternately overlapped with each other, and are engaged with the electrode plate insertion grooves of each of the left and right frames. The stoppers are inserted and locked and stacked, and the electrode plates with a substantially U-shaped cross section that is elongated in the vertical direction are placed in the electrode contact spaces of the electrode plate insertion grooves of the left and right frames for positioning the electrode plates. Inserted so as to be guided by the guide ridges, so that the tip of the electrode contact bulging portion of each collector plate elastically contacts the left and right electrode plates, Serial respectively between the upper ends and between lower ends of the left and right frames, the collector of the electric precipitator comprising assembling the upper frame and the lower frame.