JPH1066896A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive compaction and to electrically attract dust charged by ionic wind toward a filter medium and to increase dust collection capacity in an ionic wind type air purification means by properly using the air purification means and performing optimum operation in accordance with the state of use and using the filter medium in common for the dust collection parts of the air purification means. SOLUTION: The air cleaner is equipped with a fan type air purification means and an ionic wind type air purification means. In the fan type air purification means, outside air is sucked from an inlet port 10 by driving a fan 6 and passed through a dust collection part 8 to remove dust and thereafter discharged from a discharge port 13. In the ionic wind type air purification means, the fan 6 is stopped and high voltage is impressed between a discharge electrode 14 and a counter electrode 15 to cause corona discharge and ionic wind is induced. Outside air is sucked from the inlet port 10 by this ionic wind and dust is removed in the dust collection part 8. The above-mentioned air purification means are properly used. The dust collection part 8 has air permeability and electric conductivity and is set at the same electric potential as the counter electrode 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier for purifying air at home or the like.

[0002]

2. Description of the Related Art Conventionally, an air purifier draws outside air (indoor air) from a suction port provided in a main body into a main body by driving a fan built in the main body, and passes the air through a dust collecting section provided inside. Generally, a so-called fan-type air purifier that exhausts dust from a discharge port after removing dust by using a so-called fan is generally used.

[0003] In this type, since a large amount of circulating air is obtained by forcibly circulating indoor air by a fan, dust can be efficiently removed at the dust collecting portion. When the noise is loud and the temperature is low such as in winter, there is a problem that the circulating wind causes a feeling of cold and discomfort.

Therefore, a corona discharge is generated by applying a high voltage between the discharge electrode and the counter electrode without using a fan, and outside air is sucked into the main body by utilizing ionic wind induced by the corona discharge. A so-called ion wind type air purifier that removes dust in the air at a dust collecting section and then exhausts the air indoors is known from, for example, Japanese Utility Model Publication No. 2-36612.

[0005] This type has no fan and can save energy with low noise, but has a small air purification capacity due to a small amount of air flow generated by the ionic wind, and has a sharp atmosphere due to tobacco or the like. It was difficult to respond quickly to dirt and clean up a large room.

[0006]

SUMMARY OF THE INVENTION According to the present invention, an efficient fan-type air purifying means is operated in accordance with a use time, a place, and an air dirt condition, for example, when there is much dirt or when it is desired to purify air immediately. In the case where the room temperature is low and the person feels cold by blowing air, or when the air is not so dirty, the ion wind type air purification means which is quieter than the efficiency and does not feel cold can be operated. In addition to providing an air purifier, despite having a fan-type air purifying means and an ion-type air purifying means, the outer shape can be made compact without increasing the size, and the dust collecting power in the ion-wind type air purifying means can be reduced. It is an object to provide an air purifier that can be improved.

[0007]

According to the present invention, the outside air sucked into the main body from the intake port by driving a fan incorporated in the main body is passed through a dust collecting portion to remove dust, and then exhausted to the outside of the main body from an exhaust port. A high voltage is applied between the fan-type air purification means and the discharge electrode and the counter electrode to generate a discharge, and the ionic wind induced by the discharge sucks outside air to remove dust at the dust collecting portion. And an ion wind type air purifying means, wherein the dust collecting portion is formed of a filter material having air permeability and conductivity, and the filter material has the same potential as the counter electrode. The filter medium contains, for example, carbon fibers.

According to this configuration, for example, when there is a lot of dirt or when it is desired to purify the air promptly, an efficient air purifying operation can be performed by driving the fan type air purifying means, and the room temperature can be reduced. If the air is low and you feel cold due to air blowing, or if the air is not very dirty, by driving the ion wind type air purification means,
It is possible to perform an optimal operation according to a use time, a place, and a condition of air contamination such that an air purifying action can be performed quietly without feeling cold.

Further, according to the present invention, since a common filter material is used as a dust collecting portion of the fan type air purifying means and the ion wind type air purifying means, the size can be reduced. Further, since the filter material is set to the same potential as the counter electrode of the ion wind generator, the dust charged by the ion wind is electrically sucked toward the filter material, and the dust trapping force by the ion wind air purifying means is reduced. Can be improved.

[0010]

An embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes an air purifier main body case, a front case 2 and a rear case 3
, And the inside is partitioned forward and backward by a partition plate 4. A communication port 5 is provided at the center of the partition plate 4 to communicate the front and rear. A fan 6 and a motor 7 for driving the fan 6 are disposed in the rear space, and a dust collector 8 and an ion generator 9 described later are disposed in the front space. The dust collection unit 8 is provided so as to cover the communication port 5. A slit-shaped intake port 10 is provided on the upper and lower surfaces of the front case 2, and the ion generator 9 is arranged so as to face the intake port 10. Further, a side wall 12 of a spiral fan casing 11 is formed integrally with the partition plate 4 so as to surround the fan 6. Further, a discharge port 13 of the fan casing 11 is opened to the rear case 3.

The ion generating section 9 is a discharge electrode composed of a discharge wire.
14 and a pair of opposed electrodes 15. A negative high voltage (for example, 7 V) is applied to the discharge electrode 14 from the high voltage generator (not shown) with respect to the opposed electrode 15. Grounded. The discharge electrode 14 is arranged closer to the intake port 10 than the counter electrode 15 is. When a high negative voltage is applied to the discharge electrode 14, corona discharge occurs between the discharge electrode 14 and the counter electrode 15, and ion wind is generated.
The outside air is sucked more. Arrow A in FIG.
Indicates the flow of air at this time.

The dust collecting section 8 is composed of a filter material 16 having air permeability and conductivity. As the filter material, for example, a material obtained by weaving carbon fibers into a filter material made of synthetic fibers or a material consisting of only carbon fibers is used. The filter material 16 is placed on a mesh-shaped metal plate 17, and the metal plate 17 is grounded, so that the filter material 16 is kept at the same potential as the counter electrode 15. Examples of the form of the filter medium 16 include a flat sheet form and a zigzag form to increase the surface area.

Next, the operation will be described. When the air in the room is dirty or when purifying the air in a large room, the operation by the fan-type air purification means is selected by a selection switch (not shown). Then, although the motor 6 is driven, the high voltage generator (not shown) does not operate, so that no high voltage is applied to the discharge electrode 14 and no discharge occurs between the discharge electrode 14 and the counter electrode 15.

As a result, the fan 6 rotates, and the air in the room is sucked into the main body through the intake port 10. Then, the dust passes through the ion generator 9, but since no discharge is generated, the dust in the air passes through the dust collector 8 without being charged, passes through the fan casing 11, and is exhausted from the discharge port 13 into the room. Is done. In this process, the dust contained in the sucked room air is captured and purified by the dust collection unit 8. That is, in this case, since the fan-type air purifying means is operated and the indoor air is forcibly circulated by the fan to obtain a large amount of circulating air, dust can be efficiently removed by the dust collecting section 8. it can. In FIG. 1, arrow B indicates the flow of air at this time.

Next, in the case where the room temperature is low and cold is felt by blowing air, or in the case where the air is not very dirty, the operation by the ion wind type air purification means is selected by the selection switch. Then, the motor 6 is not driven, and a high-voltage generator (not shown) operates instead.
A voltage of negative 7 KV is applied to the electrode 15. As a result, corona discharge occurs between the discharge electrode 14 and the counter electrode 15, and ion wind is generated. The room air is sucked from the air inlet 10 by the ion wind, and the dust contained in the sucked air is negatively charged and moves toward the filter medium 16 having the same potential as the counter electrode 15. Then, charged dust adheres to the filter medium 16. In this way, dust in the air is gradually removed.

That is, in this case, since the ionic wind type air purifying means is operated, the dust collecting ability is inferior, but the noise due to the rotation of the fan 6 and the cold due to the blowing are not felt, and the indoor air can be kept clean. it can.

Each time a selector switch (not shown) is pressed, the operation is switched between the fan type air purifying means and the ion wind type air purifying means.

In the above embodiment, the outside air is sucked from the same intake port 10 in both the case of the operation by the fan type air purifying means and the case of the operation by the ion wind type air purifying means. 2, a slit-shaped main intake port 18 is provided as shown in FIG. 2 so that air can be sucked from the main intake port 18 in the case of operation by a fan-type air purifying means. The air resistance is reduced, and the dust collecting force can be improved. That is, the main intake port 18 is an intake port dedicated to the fan-type air purification means. In FIG. 2, an arrow C indicates the flow of air at this time.

[0019]

According to the present invention, since the fan type air purifying means and the ion wind type air purifying means are provided, the fan type air purifying means can be used, for example, when there is a lot of dirt or when it is desired to purify the air immediately. By driving the air purifier, it is possible to perform an efficient air purifying action.If the room temperature is low and you feel cold by blowing air, or if the air is not very dirty, etc. By driving it, it is possible to perform an optimal operation according to the time of use, place, and dirt condition of the air, so that it can perform an air purification action that is quiet and does not feel cold and also saves power consumption. it can.

[0020] Despite having both the fan type air purifying means and the ion wind type air purifying means, a common filter material is used as the dust collecting portion of the fan type air purifying means and the ion wind type air purifying means. Therefore, it is possible to make the filter compact, and furthermore, since this filter material is set to the same potential as the counter electrode of the ion wind generating portion, dust charged by the ion wind is electrically sucked toward the filter material. As a result, it is possible to improve the dust capturing power of the ion wind type air purification means.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an air purifier of the present invention.

FIG. 2 is a longitudinal sectional view showing another embodiment of the air purifier.

[Explanation of symbols]

 6 Fan 10 Suction port 8 Dust collecting section 13 Discharge port 14 Discharge electrode 15 Counter electrode 16 Filter material 18 Inlet dedicated to fan-type air purification means

Claims (3)

[Claims] 1. A fan-type air purifying means for removing outside dust sucked into the main body from an intake port by driving a fan incorporated in the main body through a dust collecting section, and then exhausting the air from the discharge port to the outside of the main body; An ion wind type air purification means for applying a high voltage between the electrode and the counter electrode to generate a discharge, sucking outside air by an ion wind induced by the discharge, and removing dust at the dust collecting portion; Wherein the dust collecting portion is made of a filter material having air permeability and conductivity, and the filter material is set to the same potential as the counter electrode. 2. The air purifier according to claim 1, wherein said filter medium is made of a filter medium containing carbon fibers. 3. The air purifier according to claim 1, wherein a dedicated air purifier is provided as said air inlet.