JP2010240578A - Dust collection cell and air cleaner using the same - Google Patents

Abstract

A dust collection cell capable of suppressing a reduction in dust collection performance between a pair of positive electrode plates and a negative electrode plate that have caused breakdown / discharge and an air cleaner provided with the same.
SOLUTION: A plurality of first electrode plates 9, a plurality of second electrode plates 10 in which a plurality of divided electrode plates are arranged as a group between each of the first electrode plates; And a high-voltage power source 4 that applies a high voltage between the first electrode plate and the second electrode plate via the high-resistance body.
[Selection] Figure 1

Description

  The present invention relates to a dust collection cell that charges particles in an air stream by discharge and adsorbs the charged particles, and an air cleaner using the dust collection cell.

  Conventionally, a dust collection cell of an air cleaner that collects dust and mist has a plurality of positive electrode plates 101 and negative electrode plates 102 arranged in parallel with each other at predetermined intervals as shown in FIG. By applying a high voltage, dust or mist positively charged by an ionizer installed on the upstream side of the dust collection cell using the electric field generated between the adjacent positive electrode plate 101 and negative electrode plate 102 is negative. On the other hand, the negatively charged dust and mist are attracted to the positive electrode plate 101 on the electrode plate 102.

  By the way, when large dust or the like enters between the adjacent positive electrode plate 101 and the negative electrode plate 102 and a breakdown occurs due to dielectric breakdown between the electrode plates, not only between the electrode plates but also the same. There is a problem that the dust collection function of the entire dust collection cell is almost lost because the potential between the other positive electrode plate 101 and the negative electrode plate 102 to which a high voltage is applied falls all at once.

  In order to solve the above-described problems, a dielectric breakdown between another positive electrode plate 101 and a negative electrode plate 102 due to a dielectric breakdown between a certain pair of positive electrode plate 101 and negative electrode plate 102 is prevented. In addition, there is a dust collection cell configured so that the discharge accompanying the dielectric breakdown does not spill over in a chained manner (for example, see Patent Document 1).

  In the dust collection cell disclosed in Patent Document 1, as shown in FIG. 8, each positive electrode plate 101 is configured to apply a high voltage via a high resistance body 103, thereby providing a pair of positive electrodes. Even if dielectric breakdown / discharge occurs between the electrode plate 101 and the negative electrode plate 102, no dielectric breakdown / discharge occurs between the other positive electrode plate 101 and the negative electrode plate 102.

JP-A-5-31398

  However, even in the dust collection cell configured in this way, the dust collection capability is completely lost between the pair of positive electrode plate 101 and negative electrode plate 102 that have caused breakdown / discharge. There is a problem that dust and mist that pass between the electrode plates cannot be collected, and dust and mist that are not collected from the air cleaner are sent to the outside again.

  The present invention has been made to solve the above-described problems, and can suppress a reduction in dust collection ability between a pair of positive and negative electrode plates that have caused dielectric breakdown / discharge. It aims at providing a dust collection cell and an air cleaner provided with the same.

  A dust collection cell according to the present invention includes a plurality of first electrode plates, and a plurality of second electrode plates in which a plurality of divided electrode plates are disposed as a group between the first electrode plates, A high resistor connected to the second electrode plate, and a high voltage power source for applying a high voltage between the first electrode plate and the second electrode plate via the high resistor are provided.

  According to this invention, since it is configured as described above, even when dielectric breakdown / discharge occurs between a certain pair of positive electrode plates and negative electrode plates, the pair of positive electrode plates and negative electrode plates It is possible to suppress the reduction of the dust collection capacity during the period.

It is sectional drawing which shows the structure of the air cleaner which concerns on Embodiment 1 of this invention. It is a perspective view which shows the structure of the collector which concerns on Embodiment 1 of this invention. It is a perspective view which shows the structure of the collector which concerns on Embodiment 2 of this invention. It is a perspective view which shows the structure of the collector which concerns on Embodiment 3 of this invention. It is sectional drawing which shows the structure of the air cleaner which concerns on Embodiment 4 of this invention. It is sectional drawing which shows the structure of the air cleaner which concerns on Embodiment 5 of this invention. It is a perspective view which shows the structure of the conventional collector. It is a perspective view which shows the structure of the conventional collector.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a cross-sectional view showing a configuration of an air cleaner 1 according to Embodiment 1 of the present invention. FIG. 2 is a perspective view showing the configuration of the collector 6 according to Embodiment 1 of the present invention.
As shown in FIG. 1, the air cleaner 1 includes a pre-filter 2, a dust collection cell 3, and high-voltage power supplies 4a and 4b.

  The pre-filter 2 is for removing particles such as relatively large dust and dust in the gas to be purified that passes through the air cleaner 1, and is formed of saran net or nonwoven fabric.

  The dust collection cell 3 is for flowing the gas to be purified that has passed through the pre-filter 2 into the interior and purifying it, and then flowing out the purified gas. As shown in FIG. A collector 6 is used.

  The ionizer 5 discharges when a high voltage is applied from the high voltage power source 4a, generates an electrostatic field, and particles such as dust and dust contained in the gas to be purified that passes through the electrostatic field of the ionizer 5 1 is positively charged, and is composed of a counter electrode plate 7 and a discharge electrode line 8 as shown in FIG.

  As shown in FIG. 1, the counter electrode plate 7 is a plurality of plate-like electrode plates that are installed so that surfaces perpendicular to the thickness direction thereof are parallel to the airflow passing through the ionizer 5, for example, Made of stainless steel. The counter electrode plate 7 is connected to the ground.

  As shown in FIG. 1, the discharge electrode line 8 is a linear discharge electrode installed at a predetermined interval between the counter electrode plates 7, and is formed of, for example, a tungsten wire. The discharge electrode line 8 is connected to a high voltage power source 4a. The discharge electrode line 8 configured in this manner causes a discharge corresponding to the high voltage with the counter electrode plate 7 when a high voltage is applied from the high-voltage power supply 4a, and generates an electrostatic field. generate.

  The collector 6 is charged by the ionizer 5 and adsorbs particles such as dust and dust in the positively charged air current by electrostatic force. As shown in FIG. 1, the collector 6 includes a negative electrode plate 9 (first electrode plate) and a positive electrode plate 10 (second electrode plate).

  The negative electrode plate (first electrode plate) 9 is a plurality of plate-like electrode plates that pass through the ionizer 5 and adsorb positively charged particles, and are made of, for example, stainless steel. As shown in FIG. 1, the plurality of negative electrode plates 9 are connected to the ground. The negative electrode plate 9 configured in this way is arranged so that the surface perpendicular to the thickness direction of the negative electrode plate 9 is parallel to the airflow. Moreover, the several negative electrode plate 9 arrange | positioned in parallel is fixed by letting a conduction shaft pass, for example.

  The positive electrode plate (second electrode plate) 10 is a plurality of plate-like electrode plates that pass through the ionizer 5 and adsorb negatively charged particles, and are made of, for example, stainless steel. As shown in FIG. 1, the positive electrode plate 10 is divided into two parts: an upstream positive electrode plate 10 a installed on the upstream side of the collector 6 and a downstream positive electrode plate 10 b installed on the downstream side of the collector 6. Configured.

  The positive electrode plate 10 configured in this way includes the upstream positive electrode plate 10a and the downstream positive electrode plate 10b divided in the same plane between the negative electrode plates 9, and the thickness direction of the positive electrode plate 10 is a group. Are disposed at a predetermined interval so that the surface perpendicular to the surface of the negative electrode plate 9 is parallel to the surface of the negative electrode plate 9.

  Further, as shown in FIG. 2, the plurality of upstream positive electrode plates 10a are connected to the high-voltage power source 4b through one high resistance body 11, and similarly, the plurality of downstream positive electrode plates 10b are connected to one high-voltage power source 4b. The resistor 11 is connected to the high voltage power supply 4b.

  One high resistance body 11 connected to the plurality of upstream side positive electrode plates 10a is obtained by fixing the plurality of upstream side positive electrode plates 10a using, for example, a conductive shaft and providing the high resistance body 11 at a subsequent stage. Connected to the upstream positive electrode plate 10a. Similarly, one high resistor 11 connected to the plurality of downstream positive electrode plates 10b fixes the plurality of downstream positive electrode plates 10b using, for example, a conductive shaft, and the high resistor 11 is provided in the subsequent stage. Thus, it is connected to the downstream positive electrode plate 10b.

  The high-voltage power supply 4 a applies a high voltage necessary for charging particles to the ionizer 5, and the high-voltage power supply 4 b applies a high voltage necessary for adsorbing particles to the collector 6. As shown in FIG. 1, the high-voltage power supply 4a is connected to the discharge electrode line 8 in the ionizer 5, and the high-voltage power supply 4b has a high-resistance element 11 on the upstream positive electrode plate 10a and the downstream positive electrode plate 10b of the collector 6. Connected through.

Next, the operation of the air cleaner 1 configured as described above will be described.
When a power supply (not shown) is turned on to the air cleaner 1, a gas to be purified is taken into the air cleaner 1 by a blower (not shown). The prefilter 2 removes relatively large particles such as dust and dust from the gas, and the gas is sent to the ionizer 5 in the dust collection cell 3. Further, a high voltage is generated by the high voltage power supplies 4a and 4b and is supplied to the ionizer 5 and the collector 6 in the dust collection cell 3, respectively. When a high voltage is applied to the discharge electrode line 8 provided in the ionizer 5 from the high voltage power supply 4a, the strength corresponding to the high voltage applied from the high voltage power supply 4a is between the counter electrode plate 7 and the discharge electrode line 8. This causes an electrostatic field. When a gas from which relatively large particles have been removed by the prefilter 2 passes through the electrostatic field generated in the ionizer 5, particles such as dust and dust remaining in the gas are charged and positively charged. Is done. The positively charged particles in the ionizer 5 are sent to the collector 6 installed on the downstream side of the ionizer 5 and are adsorbed by the electrostatic force to the negative electrode plate 9 connected to the ground. It is possible to remove pollutants such as dust and dust of gas flowing into the gas. Thereafter, the gas purified by the dust collection cell 3 flows out to the outside.

  Here, the plurality of upstream positive electrode plates 10a are connected to the high-voltage power source 4b via one high resistance body 11, and similarly, the plurality of downstream positive electrode plates 10b are connected to one high resistance body 11 via a high resistance body 11b. By connecting to the power source 4b, for example, when discharge occurs due to dust entering between the upstream positive electrode plate 10a and the negative electrode plate 9, the downstream positive electrode plate 10b and the negative electrode plate 9 The voltage drop can be suppressed, and the function deterioration of the collector 6 can be prevented.

  As described above, according to the first embodiment of the present invention, the positive electrode plates 10 alternately arranged in parallel with the negative electrode plates 9 in the collector 6 are replaced with the upstream positive electrode plates 10a and the downstream positive electrode plates 10b. The high-voltage power supply 4b is connected to the plurality of upstream positive electrode plates 10a via one high resistor 11, and similarly, the plurality of downstream positive electrode plates 10b via one high resistor 11 Since the high voltage power supply 4b is configured to be connected, even if a discharge occurs between the upstream positive electrode plate 10a (downstream positive electrode plate 10b) and the negative electrode plate 9 and the dust collecting function is lost, the downstream A voltage drop between the side positive electrode plate 10b (upstream side positive electrode plate 10a) and the negative electrode plate 9 can be suppressed, and a decrease in the dust collection performance of the collector 6 can be prevented.

Embodiment 2. FIG.
FIG. 3 is a perspective view showing the configuration of the collector 6 according to Embodiment 2 of the present invention.
In the dust collection cell 3 according to Embodiment 1 of the present invention, a plurality of upstream positive electrode plates 10a are connected to the high-voltage power supply 4b via one high resistor 11, and the plurality of downstream positive electrode plates 10b are connected to one. The high-voltage power source 4b is connected to the high-resistance body 11 in this configuration. In this configuration, for example, a dielectric breakdown / discharge is caused between a certain pair of the upstream positive electrode plate 10a and the negative electrode plate 9. In this case, the dust collecting function is lost between all the upstream positive electrode plates 10a and the negative electrode plates 9. Therefore, in the dust collection cell 3 according to the second embodiment of the present invention, as shown in FIG. 3, each upstream positive electrode plate 10a is connected to the high voltage power source 4b via the high resistance body 11, and similarly, Each downstream positive electrode plate 10b is configured to be connected to a high voltage power source 4b via a high resistance body 11.
Hereinafter, the same or similar components as those in the air cleaner according to the first embodiment of the present invention shown in FIG.

  As shown in FIG. 3, each upstream positive electrode plate 10 a is connected to a high voltage power source 4 b via a high resistance body 11. Similarly, each downstream positive electrode plate 10 b is connected to a high voltage power source 4 b via a high resistance body 11. Connected.

  The high resistor 11 connected to each upstream positive electrode plate 10a is provided by fixing a plurality of upstream positive electrode plates 10a using, for example, an insulating shaft. Similarly, the high resistance body 11 connected to each downstream positive electrode plate 10b is provided by fixing a plurality of downstream positive electrode plates 10b using, for example, an insulating shaft.

  As described above, according to the second embodiment of the present invention, when dielectric breakdown / discharge occurs between a certain pair of upstream positive electrode plate 10a (downstream positive electrode plate 10b) and negative electrode plate 9 However, the dust collection function between the other upstream positive electrode plate 10a (downstream positive electrode plate 10b) and the negative electrode plate 9 is not lost.

Embodiment 3 FIG.
FIG. 4 is a perspective view showing the configuration of the collector 6 according to Embodiment 3 of the present invention.
In the dust collection cell 3 according to Embodiment 2 of the present invention, the positive electrode plate 10 of the collector 6 is divided into two parts, that is, the upstream positive electrode plate 10a and the downstream positive electrode plate 10b. In the dust collection cell 3 according to Embodiment 3, the positive electrode plate 10 of the collector 6 is divided into four parts (10a to 10d) as shown in FIG.
With this configuration, when dielectric breakdown / discharge occurs between a certain pair of positive electrode plate 10 and negative electrode plate 9, between this pair of positive electrode plate 10 and negative electrode plate 9. The range in which the dust collection function is lost can be further narrowed.

  In the first and second embodiments of the present invention, the positive electrode plate 10 is divided into two, and in the third embodiment of the present invention, the positive electrode plate 10 is divided into four. However, the present invention is not limited to this. The electrode plate 10 may be further finely divided.

  Moreover, in the dust collection cell 3 which concerns on Embodiment 1-3 of this invention, a shaft is used as the fixing method of the negative electrode plate 9 and the positive electrode plate 10, and the connection method of the high resistance body 11 to the positive electrode plate 10. However, the present invention is not limited to this, and may be fixed using a spacer, for example.

Embodiment 4 FIG.
FIG. 5 is a cross-sectional view showing a configuration of an air cleaner 1 according to Embodiment 4 of the present invention.
In the air cleaner 1 according to Embodiment 1 of the present invention, one high resistor 11 is connected to each of the upstream positive electrode plate 10a and the downstream positive electrode plate 10b, and is connected to one high voltage power source 4b. However, the air cleaner 1 according to Embodiment 4 of the present invention does not connect the high resistance body 11 to the upstream positive electrode plate 10a and the downstream positive electrode plate 10b, but instead of the upstream positive electrode plate 10a and the downstream positive electrode plate 10b. The individual high voltage power supply 4b is connected to the electrode plate 10b.
Hereinafter, the same or similar configurations as those of the air cleaner according to the first embodiment of the present invention shown in FIG.

  As shown in FIG. 5, two high voltage power supplies 4b are provided, one high voltage power supply 4b is connected to the upstream positive electrode plate 10a, and the other high voltage power supply 4b is connected to the downstream positive electrode plate 10b.

  As described above, a pair of upstream positive electrode plates 10a (downstream positive electrode plates 10b) and negative electrodes are configured by including individual high-voltage power supplies 4b according to the number of divisions of the positive electrode plates 10. When dielectric breakdown / discharge occurs with the plate 9, the dust collecting function between the upstream positive electrode plate 10a (downstream positive electrode plate 10b) and the negative electrode plate 9 is lost, but the divided downstream The dust collection function between the side positive electrode plate 10b (upstream side positive electrode plate 10a) and the negative electrode plate 9 can be maintained, and the reduction of the dust collection performance can be prevented.

Embodiment 5.
FIG. 6 is a sectional view showing the structure of an air cleaner 1 according to Embodiment 5 of the present invention.
In the air cleaner 1 according to Embodiment 4 of the present invention, the high resistance body 11 is not connected to the upstream positive electrode plate 10a and the downstream positive electrode plate 10b, but the individual high voltage power supply 4b is connected. In the air cleaner 1 according to Embodiment 5 of the present invention, the high resistor 11 is connected to the upstream positive electrode plate 10a and the downstream positive electrode plate 10b, and the individual high voltage power source 4b is connected. is there.
Hereinafter, the same or similar configurations as those of the air cleaner according to the fourth embodiment of the present invention shown in FIG.

  As shown in FIG. 6, two high-voltage power supplies 4b are provided, one high-voltage power supply 4b is connected via a high resistor 11 connected to each upstream-side positive electrode plate 10a, and the other high-voltage power supply 4b is It connects via the high resistance body 11 connected to each downstream side positive electrode plate 10b.

  As described above, according to the number of divisions of the positive electrode plate 10, individual high voltage power sources 4 b are provided and connected via the high resistors 11 connected to the respective upstream positive plates 10 a and the respective downstream positive plates 10 b. With this configuration, when dielectric breakdown / discharge occurs between a certain pair of upstream positive electrode plates 10a (downstream positive electrode plates 10b) and the negative electrode plate 9, the pair of upstream positive electrodes The dust collecting function is lost between the plate 10a (downstream positive electrode plate 10b) and the negative electrode plate 9, but between the other upstream positive electrode plate 10a (downstream positive electrode plate 10b) and the negative electrode plate 9. The dust collection function between the downstream positive electrode plate 10b (upstream positive electrode plate 10a) and the negative electrode plate 9 divided in the above can be maintained, and the reduction of the dust collection performance can be prevented.

DESCRIPTION OF SYMBOLS 1 Air cleaner 2 Pre filter 3 Dust collection cell 4a, 4b High voltage power supply 5 Ionizer 6 Collector 7 Counter electrode plate 8 Discharge electrode wire 9 Negative electrode plate 10 Positive electrode plate 10a Upstream positive electrode plate 10b Downstream positive electrode plate 11 High resistance body

Claims (2)

A plurality of first electrode plates;
A plurality of second electrode plates in which a plurality of divided electrode plates are arranged as a group between each of the first electrode plates;
A high resistance connected to the second electrode plate;
A dust collection cell comprising: a high voltage power source for applying a high voltage between the first electrode plate and the second electrode plate via the high resistance body.   An air cleaner that mounts the dust collection cell according to claim 1, causes the gas to be purified to flow into the dust collection cell, purifies the dust in the dust collection cell, and then causes the purified gas to flow out.

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