JPH0231152Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a circular air cleaner.
More specifically, a circular air cleaner is provided in which a discharge section for performing corona discharge is disposed on the upstream side of an air flow path through which air is supplied by a fan, and a dust collection section is disposed on the downstream side. It's about machines.

[Prior Art] As this type of air purifier, an electrostatic type that utilizes corona discharge has previously been developed. The structure of this air purifier is that a discharge electrode and a discharge counter electrode that perform corona discharge are arranged on the upstream side of an air flow path through which air is supplied by a fan, and a dust collection electrode and a discharge counter electrode are provided on the downstream side of the air flow path. A dust counter electrode is provided and a fan is provided on the upstream or downstream side of the air flow path. In an air purifier configured in this way,
When air is supplied into the air flow path, the dust in the air is charged by the discharge electrode and the discharge counter electrode, and then
Collected when passing between the dust collection electrode and the dust collection counter electrode,
The air is purified and only clean air is discharged.

[Problems to be solved by the invention] However, conventional air purifiers of this type generally have air intake and discharge ports in only one direction, so they have the disadvantage that they cannot be installed in the center of the room. Therefore, it cannot be installed in places with limited vertical space, and since it is installed in the corner of a room, there is a problem that air circulation cannot be performed smoothly and uniform air purification cannot be achieved.

There are also types of air purifiers that have multiple suction ports for smooth air circulation, but in this type of air purifier, each suction port must have a discharge part and a dust collection part. There are problems in that the structure becomes complicated and the entire device becomes large.

[Means for solving the problem] This invention was made in view of the above circumstances, and as a means to solve the above technical problem, a circular type with multiple air intake ports and air discharge ports provided on the circumference. At the same time, a discharge section consisting of a discharge electrode and a discharge counter electrode for performing corona discharge, and a dust collection section consisting of a dust collection section and a dust collection counter electrode are arranged in the air flow path, thereby making the entire structure thin and compact. In addition, it is an object of the present invention to provide a circular air cleaner characterized by being able to improve dust collection efficiency.

That is, in this invention, on the upstream side of the air flow path,
The air purifier is equipped with a discharge part that performs corona discharge and a dust collection part on the downstream side, and the discharge part is provided with transparent parts arranged at appropriate intervals around the circular base. It consists of a discharge counter electrode in which holes are continuously drilled, and a discharge electrode in which the tip of a pointed protrusion is located in each through hole of this discharge counter electrode. It is composed of a donut disk-shaped dust collection electrode plate and a discharge return electrode plate, which are stacked so that
A protrusion may be provided protruding from at least one side toward the other in order to maintain a distance between adjacent parts, or the dust collection part may be held in place by a holder, and air may be sucked into the air flow path through the center hole of the dust collection part. An object of the present invention is to provide a circular air cleaner characterized in that it is equipped with a fan that discharges the air to the outer periphery.

In this invention, the discharge counter electrode is formed into a corrugated shape so that the through hole formed in the discharge counter electrode opens perpendicularly to the air flow, and the dust collection electrode plate and the dust collection counter electrode are Although they may be of different shapes, it is also possible to use plates of the same shape but with opposite polarity.

[Effect] The above technical means works as follows.

Dust in the air is supplied into the air flow path from the suction ports provided in the circumferential direction, and is charged by the corona discharge between the discharge electrode and the discharge counter electrode, and is sent to the dust collection section on the downstream side. Charged dust is collected as it passes, and only clean air from which dust has been removed is discharged from the downstream side, so it can be installed in the center of the room to provide uniform air purification. Dust collection efficiency can be improved.

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

Figure 1 is a sectional view showing the structure of the first embodiment of the air purifier of this invention.
Air flow path 10 to which air is supplied by fan 40
A discharge section 2 that performs corona discharge is arranged on the upstream side of
0 and a dust collecting section 30 disposed on the downstream side of the air flow path 10.

As shown in FIG. 3, the discharge section 20 has circular or hexagonal or other regular polygonal through holes 26 continuously bored at appropriate intervals around the circumference of a band-ring-shaped circular base 24. The discharge counter electrode 22 and the ring-shaped base 23 are provided with sharply pointed protrusions 27 projecting outwardly from equally spaced positions in the circumferential direction, and the tips of the pointed protrusions 27 are connected to the through holes 26 of the discharge counter electrode 22 . The discharge electrode 21 is located at the center of the discharge electrode 21. In this case, four supporting pieces 28 which also serve as contacts for attaching the discharge counter electrode 22 to the lower case 12 of the air purifier are protruded outward from the upper edge of the circular base 24 of the discharge counter electrode 22. In addition, the discharge electrode 21 includes:
Four support pieces 29 which also serve as contacts for attaching the discharge electrode 21 to the lower case 12 are provided to protrude inward from the upper ends of the upright portions 25 that rise from four locations on the ring-shaped base 23.

The discharge electrode 21 configured as described above is made of a strong conductive metal plate such as stainless steel, ordinary steel, copper, brass, or aluminum with a plate thickness of 0.1 to 3.0 mm, preferably 0.2 to 1.0 mm. Further, the discharge counter electrode 22 is made of a metal plate such as an aluminum alloy, a resin substrate whose surface including at least the through holes 26 is coated with a conductive metal, or a conductive plastic plate made of a mixture of vinyl chloride and carbon or aluminum powder. It is formed by

Further, the discharge electrode 21 is connected to the cathode of a power source (not shown), and the discharge counter electrode is connected to the anode of the power source, and when a voltage is applied between the discharge electrode 21 and the discharge counter electrode 22, , a corona discharge is generated between the two. In this case, the discharge electrode 21 and the discharge counter electrode 22 may have opposite polarities to perform anodic discharge. Such corona discharge is, for example, 4.5KV, 0.1, which can be obtained by transforming and rectifying a household AC power supply (100V).
Can be done with ~1mA DC current.

On the other hand, the dust collection section includes donut disk-shaped dust collection electrode plates 31 that are stacked so that each sheet has a reverse polarity.
and a dust collecting counter electrode plate 32. In this case, the dust collecting electrode plate 31 and the dust collecting counter electrode plate 32 are, as shown in FIG.
A conductive part 34 is provided on one side of the conductive part 34 by coating or printing aluminum vapor deposition or a mixture of carbon or aluminum powder with an adhesive, and a conductive part 34 is provided on one side of the conductive part 34 to maintain a distance between adjacent parts. It has a structure in which a protrusion 35 is provided in a protruding manner. In this case, the protrusion 35 has a protrusion group 35c that is composed of two large protrusions 35a that are approximately equal in width to the conductive portion 34 and a small protrusion 35b that is located on the center side between these protrusions 35a. A small protrusion 35d is provided on the outer circumferential side of the width of the conductive portion 34 at a position having a phase of 60° with respect to the protrusion group 35c. Further, a contact tongue piece 36 that connects with the conductive part 34 is provided on the outer peripheral piece provided with the projection group 35c, and a recess slightly larger than the contact tongue piece 36 is located at the outer peripheral position of the projection part 35d, which is deviated by 60 degrees from this position. Place 37
is cut out. Furthermore, a contact tongue piece 36 and a recess 37 are provided at opposite positions on the inner peripheral side of the center hole.

The dust collection electrode plate 31 and the dust collection counter electrode plate 32 configured in this manner are stacked with an offset of 60 degrees, and after the contact tongue piece 36 is penetrated into the mounting hole 38a provided in the dust collection unit holder 38, The tip of the contact tongue piece 36 is adapted to come into contact with a copper conductor 39 mounted on the holder 38 (see FIGS. 5 to 7). In this case, since the discharge section 20 performs cathode discharge, the dust collecting electrode plate 31 is connected to the anode of the power source,
A dust collecting counter electrode plate 32 is connected to the cathode of the power source.

The contact tongues 36 of the dust collecting electrode plate 31 and the dust collecting counter electrode plate 32 are symmetrical in the vertical direction, so as shown in FIGS. 8 and 9, the same holder 38 can be reversed. can be used. In this case, the dust collecting electrode plate 31 and the dust collecting counter electrode plate 32
Although the case has been described in which they are stacked with the holder 38, it is not always necessary to use the holder 38, and the dust collection electrode plate 31 and the dust collection counter electrode plate 32 can be bonded together with an adhesive or the like at the projection 35a. It's okay. Further, the dust collection electrode plate 31 and the dust collection counter electrode plate 32 do not necessarily have to have the same shape; for example, as shown in FIGS. 10 and 11, the dust collection electrode plate 31 is formed into a flat donut disk shape. The dust collection counter electrode plate 32 is provided with protrusions 35 on both sides of the donut disk, and the dust collection electrode plate 31 and the dust collection counter electrode plate 32 are laminated and alternately adhered with adhesive to collect dust. 30 may be configured. In this case, by inserting the dust collection electrode plate 31 and the dust collection counter electrode plate 32 glued together from below the conductor 39, the contact tongue piece 36 is brought into contact with the conductor 39 while being bent. In this way, it is sufficient that the dust collecting electrode plate 31 and the dust collecting counter electrode plate 32 are provided with a protrusion 35 on at least one side between adjacent parts to maintain the distance. Further, as shown in FIG. 11A, the dust collecting electrode plates 31 and the dust collecting counter electrode plates 32 are alternately stacked in a flat donut disk shape, and the distance between the dust collecting electrode plates 31 and the dust collecting counter electrode plates 32 is maintained at least. It is clamped and fixed by two or more slit holders 38' to prevent contact with the conductor 39 from the first
It may also be similar to FIGS. 0 and 11.

The discharge section 20 and the dust collection section 3 configured as described above
0 are disposed on the upstream and downstream sides of the air flow path 10, which is composed of a lower case 12, an intermediate case 14, and an upper case 16. In this case, as shown in FIGS. 1 and 2, the lower case 12 is composed of a circular substrate 12a on which a motor 42 for driving a fan 40 is mounted at its center, and the intermediate case 1
4 includes a donut-shaped base 14a located at the upper part of the substrate 12a excluding the center, a side wall 14b hanging down from the outer periphery of the base 14a, and an inward flange 14c bent inward from the lower end of the side plate 14b. an upper portion of the substrate 12a excluding the center portion;
It is attached to the upper part of the substrate 12a to form a lower air flow path 10a between the side portion and the lower side portion.
Further, the upper case 16 has a structure in which a side wall 16b is suspended around a circular top plate 16a, and discharge ports 19 are continuously formed at equal intervals in the side wall 16b. The upper case 16 is attached to the upper part of the intermediate case 14 to form an upper air flow path 10b. Note that the discharge section 20 and the dust collection section 30 are arranged in the lower air flow path 10a, and a deodorizing filter 44 is provided downstream of the dust collection section 30.
is installed. This deodorizing filter 44 is
For example, divalent iron ion adsorbents, activated carbon, etc. are used. Furthermore, a high-voltage power supply storage box 46 containing a built-in power supply unit is placed on the upper surface of the center of the upper case 16, and an air purifier of this invention is suspended from the ceiling at an outer position of this high-voltage power supply storage box 46. A locking tool 48 is attached for the purpose of doing so.

In the air purifier of this invention configured as described above, when the fan 40 is driven and a voltage is applied to the discharge electrode 21 and the discharge counter electrode 22,
Contaminated air A in the atmosphere flows through the lower air flow path 10a.
The air is sucked into the air flow path 10 through the suction port 18 and discharged to the outer periphery through the center hole of the dust collecting section 30. At this time, the discharge electrode 21 and the discharge counter electrode 22
The dust in the air A is negatively charged due to the corona discharge caused by this, and when this air A passes through the dust collection section 30 on the downstream side, it is collected on the dust collection electrode plate 31 due to the electric charge of the dust collection section 30. , purified air B
Only the air is discharged into the atmosphere from the discharge port 19 of the upper air flow path 10b.

FIG. 12 is a sectional view showing a second embodiment of this invention, in which the number of structural members is reduced compared to the first embodiment. That is, the intermediate case 14 is formed into a donut disk shape, and the upper case 16 is formed into a donut disk shape.
This is a case where the drive motor 42 of the fan 40 is mounted on the lower surface of the center of the fan 40. In this case, the discharge counter electrode 22 is tilted so that its through hole 26 faces slightly downward, making it easier for air A to be taken in. Further, the center portion of the lower case 12 is bent upward toward the fan side to allow smooth air circulation.

In the second embodiment, the discharge electrode 21 is located downstream of the discharge counter electrode 22, but the discharge electrode 21 does not necessarily have to be located downstream of the discharge counter electrode 22, as shown in FIG. , the discharge electrode 21 may be disposed upstream of the discharge counter electrode 22.

FIG. 14 is a cross-sectional view showing a third embodiment of this invention, in which the suction efficiency of air A is improved. That is, this is a case where the discharge counter electrode 22 is formed in a wave shape so that the through hole 26 of the discharge counter electrode 22 of the discharge section 20 is opened orthogonally to the air flow in consideration of the eddy current generated by the rotation of the fan 40. . In this case, the pointed protrusion 27 of the discharge electrode 21 is connected to the through hole 2.
It protrudes slightly tangentially from the circular base 24 so as to be located perpendicularly toward the circular base 24 .

FIG. 15 is a sectional view showing a fourth embodiment of this invention, in which the air suction and discharge positions are reversed from those in the first and second embodiments. That is, the discharge section 20 and the dust collection section 30 are arranged in the upper air passage 10b composed of the upper case 16 and the intermediate case 14, and the outer peripheral side of the upper air passage 10b is driven by the fan 40. In the case where air A is sucked through the suction port 18a and passed through the discharge section 20 and the dust collection section 30, the purified air B is discharged from the discharge port 19a via the lower air flow path 10a. be.

FIG. 16 is a sectional view showing a fifth embodiment of this invention, in which the air cleaner of this invention is assembled integrally with a fluorescent lamp 50. That is, the ring-shaped fluorescent lamp body 5 to which the fluorescent lamp 52 of the fluorescent lamp 50 is attached
This is a case where the air cleaner of this invention is assembled in the inner space of No. 4. In this case, the discharge counter electrode 22 is arranged flush with the lower case 12, and has a structure in which the through hole 26 opens downward.

FIG. 17 is a sectional view showing a sixth embodiment of this invention, in which the discharge section 20 and the dust collection section 30 are disposed on substantially the same plane to further reduce the thickness. That is, in a case 12' in which a suction port 18b provided at the lower center and a discharge port 19b provided on the outer peripheral surface are communicated through an air flow path 10, a fan 40 is installed in the center, and the fan 40 By arranging the discharge counter electrode 22 and the discharge electrode 21 of the discharge part 20 in this order on the outer periphery of the discharge part 20, and by arranging the dust collecting part 30 on the outer periphery of the discharge part 20, the thickness of the entire device can be made even thinner. This is the case. In addition, the 17th
In the figure, reference numeral 60 indicates a prefilter disposed at the suction port 18b and the discharge port 19b.

In the second to sixth embodiments, the same parts as in the first embodiment are given the same reference numerals, and their explanations are omitted.

The air purifier of this invention, which is constructed as described above, can be used by hanging from the ceiling in clean rooms and general households, and can also be installed on the ceiling of automobiles, or used in restaurants serving yakiniku cuisine. It can also be used for commercial purposes.

[Effects of the invention] As explained above, the air purifier of this invention has a circular shape with a plurality of air intake ports and air discharge ports provided on the circumference, and a circular shape in the air flow path. A discharge section consisting of a discharge counter electrode in which through holes are continuously drilled at appropriate intervals around the base, and a discharge electrode in which the tip of a pointed protrusion is located in each through hole of this discharge counter electrode. It is composed of a donut disk-shaped dust collecting electrode plate and a dust collecting counter electrode plate, which are stacked so that each plate has opposite polarity, and is stacked from at least one side toward the other so as to maintain a distance between adjacent parts. Since the protrusion is provided protrudingly or the dust collecting part is provided which is held between the holders, the following effects can be obtained.

1.Since it is a circular type with multiple air intake and discharge ports arranged around the circumference, it is able to suck in and discharge air over a wider area compared to conventional air purifiers, and also cleans the air uniformly. Can be done.

2. Since the discharge section and the dust collection section are arranged in the air flow path that communicates the suction port and the discharge port provided on the circumference, the entire device can be made thin and compact, and the dust collection efficiency is improved. can be improved.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing the first embodiment of the air purifier of this invention, Figure 2 is an exploded perspective view showing a part of the first embodiment in cross section, and Figure 3 is the discharge electrode in the first embodiment. FIG. 4 is a perspective view showing the dust collecting electrode plate and the dust collecting counter electrode plate in the first embodiment, and FIG. 5 is a sectional view showing the structure of the dust collecting part in the first embodiment. , Fig. 6 is an enlarged sectional view of Fig. 5, Fig. 7 is an enlarged sectional view of Fig. 5;
The figure is an exploded perspective view showing the structure of the dust collecting part in the first embodiment, Figs. 8 and 9 are sectional views showing another installation mode of the dust collecting part, and Fig. 10 is an exploded perspective view showing the structure of the dust collecting part in the first embodiment. FIG. 11 is an exploded perspective view showing the configuration, FIG. 11 is a sectional view showing the installation state of FIG. 10, FIG.
The figure is a cross-sectional view showing the second embodiment of this invention.
The figure is a perspective view showing another form of the discharge section in the second embodiment, FIG. 14 is a cross-sectional view showing the third embodiment of this invention, and FIG. 15 is a sectional view showing the fourth embodiment of this invention. , FIG. 16 is a sectional view showing a fifth embodiment of this invention, and FIG. 17 is a sectional view showing a sixth embodiment of this invention. Description of symbols, 10...Air flow path, 20...Discharge section, 21...Discharge electrode, 22...Discharge counter electrode, 23...
... Ring-shaped base, 24 ... Circular base, 26 ... Through hole, 27 ... Pointed protrusion, 30 ... Dust collection part, 31
... Dust collection electrode plate, 32 ... Dust collection counter electrode plate, 33 ... Insulating substrate, 34 ... Conductive part, 35 ... Protrusion, 36
...Contact tongue piece, 38'...Holder, 39...Conductor, 40...Fan.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An air purifier comprising a discharging section for performing corona discharge on the upstream side of an air flow path and a dust collecting section on the downstream side. The discharge section includes a discharge counter electrode in which through-holes are continuously formed at appropriate intervals around the periphery of a circular base, and a discharge counter electrode in which the tip of a pointed protrusion is located in each through-hole of the discharge counter electrode. The dust collection part is composed of a donut disk-shaped dust collection electrode plate and a dust collection counter electrode plate, which are stacked so that each plate has opposite polarity, and there is a gap between adjacent parts. In order to hold the dust, a protrusion is provided to protrude from at least one side toward the other, or the dust collection part is held by a holder, and air is sucked into the air flow path through the center hole of the dust collecting part, and the air is then transferred to the outer periphery. A circular air cleaner characterized by being equipped with a fan that discharges air into the air. (2) The circular shape according to claim (1) of the utility model registration claim, in which the discharge counter electrode is formed in a wave shape so that the through hole formed in the discharge counter electrode opens perpendicularly to the air flow. type air purifier.