JPH1147634A - Air purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To spread a negative ion in a room even on an operation of an ionized wind having low air flow and to suppress a generation of ozone by providing a radiation electrode generating the negative ion at an air circuit from a suction port to a blow-off port and operating intermittently a fan for a fixed time at a fixed interval on the ion wind operation. SOLUTION: When the operation is started by selecting a strong wind switch or a weak wind switch, an ion pack 30 is energized and the negative ion is discharged from the radiation electrode 29 and also a high voltage is impressed between the radiation electrode and a radiation counter electrode of a dust collecting unit 25. Then an air purification is executed and also the negative ion is supplied in the room by operating the fan 7. Then, when a windless switch is selected, the fan is stopped and the operation of only fine ionized wind generated by a potential difference between the radiation electrode and the radiation counter electrode of the dust collecting unit 25 is executed, but at this time, the fan is operated intermittently for a definite time at a definite interval to prevent the negative ion generated at the radiation electrode 29 from only remaining around the blow-off port 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cleaner equipped with an electrostatic dust collecting unit incorporated in a housing to charge dust in the air and collect the dust by electrostatic force.

[0002]

2. Description of the Related Art Conventionally, this type of air purifier removes dust in the air by circulating the air in the entire room by operating a fan, but in recent years it has been generated by a high voltage without operating the fan. The use of ionic wind to purify air has become popular because it is quiet during operation without the noise of fans and motors. Air purifiers equipped with negative ion generators were also favored because negative ions had an effect on human health and mental health.

[0003]

In this conventional example,
Negative ions emitted from the negative ion generator travel around the room by blowing air during forced operation by the fan, but when operating only with ion wind, the amount of ion wind is extremely small compared to the volume of the fan. It was not possible to spread the negative ions generated from the room evenly throughout the room. In addition, since the amount of air generated by the ion wind is small, the concentration of ozone, which is harmful to the human body, is locally increased only around the air purifier due to its sterilizing action generated between the electrodes of the electrostatic precipitator. there were.

[0004]

In order to solve the above-mentioned drawbacks, the present invention focuses on this point. In particular, the present invention has a structure in which a housing is provided with a pre-filter, an electrostatic dust collecting unit, and a fan. In an air purifier capable of selecting an ion wind operation in which the forced operation and a fan are stopped and an ion wind generated by the electrostatic dust collection unit is operated, a suction port provided in the housing is connected to an air outlet. A radiation electrode for generating negative ions is provided in the air supply path, and the fan is operated intermittently at a constant interval for a predetermined time during the ion wind operation. In the ion wind operation, an intermittent operation for stopping the operation of the electrostatic dust collection unit at a constant interval for a predetermined time is performed.

[0005]

When the operation switch 36 is pressed and the strong wind switch 37 or the weak wind switch 38 is selected, the ion pack 30 is turned on.
And the potential of the radiation electrode 29 is minus about 8000 V
As a result, negative ions are emitted from the radiation electrode 29, the dust collection pack 28 is energized, and a DC voltage of about 4000 V is applied between the discharge electrode 23 and the discharge counter electrode 24, so that the fan 7 starts operating in strong or weak wind. The negative ions are supplied to the room together with normal air cleaning.

Next, if the windless switch 39 is selected, the fan 7 is stopped and the operation is switched to only the fine ion wind generated by the potential difference between the discharge electrode 23 and the discharge counter electrode 24 of the dust collection unit 25. A quiet operation without noise of the fan 7 and the blower motor 6 starts, but the amount of ion wind is extremely small compared to the amount of air of the fan 7, so that negative ions generated at the radiation electrode 29 only drift around the outlet 20. In order to prevent this, the fan 7 is intermittently operated only once for about 30 minutes for about one minute so that negative ions can be distributed throughout the room.

Further, in order to prevent the concentration of ozone harmful to the human body generated in the dust collecting unit 25 from increasing due to the small air volume during the ion wind operation, the dust collecting unit 25 is repeatedly operated for about 8 minutes and stopped for 2 minutes. It is.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. 1 to 5. A front panel 2 is provided on a front surface of a partition plate 1 and a rear plate 3 is provided on a rear surface thereof. Forms the housing 4. The partition plate 1 is provided with a motor mounting portion 5 in the center, a blower motor 6 is mounted on the back side with screws or the like, and a sirocco fan 7 is fixed to a shaft of the blower motor 6. The hole 8 is blown from the front side to the rear side of the hole 8.

A rib-shaped upper middle partition 9 and a lower middle partition 10 are provided on the front side of the upper and lower portions of the hole 8, and the middle partitions 9 and 10 are provided.
Is provided with a groove 12 in which the filter unit 11 slides. The front panel 2 has a corrugated uneven portion 1 at the front center.
3, a suction port 14 is formed in a concave portion of the concave-convex portion 13 with a number of long holes, a lower front portion is provided with a foot portion 15 slightly narrower in width than a central portion, and a lamp portion described later is provided on the upper right side. An operation unit 17 having switches is provided on the upper right side of the upper surface of the display unit 16, and a vertically-elongated opening 18 for attaching and detaching the filter unit 11 is provided on the right side surface. A lid 19 covering the mouth 18 is provided.

The rear plate 3 is provided with an outlet 20 on the upper left side, and the filter unit 11, the hole 8,
A fan 7 and a blowing path 21 to the outlet 20 are formed. The filter unit 11 is composed of six layers of components from the suction port 14 on the front side, and a pre-filter 22 for removing relatively large dust in the air, such as cotton dust, which is formed of a resin net and a frame at the foremost side. The pre-filter 22 is provided next to the pre-filter 22 in a frame made of insulating plastic or the like.
A discharge electrode 23 made of a needle-like aluminum plate connected to the minus side of a DC power supply of 00V and a discharge counter electrode 24 connected to the plus side and having a hole formed in the aluminum plate facing the discharge electrode 23.
An electrostatic dust collecting unit 25 is formed by the discharge electrode 23 and the discharge counter electrode 24, and fine dust such as cigarette smoke in the air is charged when passing through the discharge electrode 23 and provided on the downstream side. It is attached to the discharge counter electrode 24 and removed.

The discharge electrode 23 has a discharge electrode substrate 23b parallel to the center of an aluminum frame 23a having a thickness of about 1 mm.
The discharge electrode substrate 23b is provided with a pointed discharge needle 23c toward the leeward side from the discharge electrode substrate 23b and attached to the frame 23d from the front side with screws or the like.

The discharge counter electrode 24 is provided with a plurality of holes 24a having a diameter of about 17 mm at the center of an aluminum plate having a thickness of about 1 mm and an insulating member 24 made of plastic or the like.
b, and a part of the insulating member 24b is protruded so that the handle 2
4c is formed, and is slid from the side into a groove provided inside the back surface of the frame 23d so that it can be easily attached and detached.

At the time of mounting, the tip of the discharge needle 23c of the discharge electrode 23 is 1 mm to 5 mm leeward (2 mm leeward in this embodiment) from the center of the hole 24a of the discharge counter electrode 24.
It is set to be located at. Thus, the dust collecting portion of the discharge counter electrode 24 can also be used, and only the discharge counter electrode 24 can be easily detached.

Next to the discharge counter electrode 24, a deodorizing filter 2 made of coconut shell powder activated carbon is placed in a frame 26 of plastic or the like.
7, which adsorbs and removes gas components that cannot be removed by the pre-filter 22, discharge electrode 23 and discharge counter electrode 24. Above the upper middle partition 9, a dust collecting pack 28 composed of a high voltage transformer or the like for supplying power to the electrostatic dust collecting unit 25, an electric component for generating negative ions, and a radiation electrode 29 are integrated. An electrical unit 31 provided with a control device for the ion pack 30 and the fan 7 is provided.

The dust collecting pack 28 has a transformer, a voltage doubler circuit, and the like inside, and boosts DC 12V supplied from a control board (not shown) via a lead wire to increase the DC voltage to about 400 DC.
It generates 0V. In addition, the ion pack 30
Is connected to a high voltage generating circuit for boosting a commercial power supply of AC 100 V 50 Hz or 60 Hz to DC 8000 V by connecting the radiating electrode 29 formed of a pointed aluminum plate or a needle so that the radiating electrode 29 has a potential of about minus 8000 V. The operation of the control unit 40 is controlled by the relay provided between the high voltage generation circuit and the power supply.

A hole 32 is formed between the ion pack 30 and the air passage 21 so as to penetrate the needle-shaped radiation electrode 29 for generating negative ions. The radiation electrode 29 protrudes into the air passage 21 from the hole 32. ing. The display unit 16 includes, from the right side, an operation lamp 33, a cleaning lamp 34 for notifying that the dust collection unit 25 needs to be cleaned, and a blowing lamp 35 for notifying the operation of the fan 7.

The operation unit 17 has four push-type switches.
The right side is an operation switch 36, and the left side three are linked switches for setting the air volume of the fan 7 when the strong wind switch 37, the weak wind switch 38, and the windless switch 39 press the windless switch 39 from the right. Only the ion pack 30 and the dust collection pack 28 are energized,
The air is blown only by the ionic wind generated between the discharge counter electrode 24 and the air.

FIG. 6 is a schematic diagram of the control circuit and FIG. 7 is an explanatory view of the operation state. Reference numeral 40 denotes a control unit such as a microcomputer, and the operation switch 36, strong wind switch 37, weak wind switch 38, A windless switch 39 is connected, and on the output side, the fan 7, the dust collection pack 28, the ion pack 30, the operation lamp 33, the cleaning lamp 3
4. The blower lamp 35 is connected.

When the operation switch 36 is pressed, the strong wind switch 3
7 or the weak wind switch 38 is selected, the ion pack 30 is energized and the potential of the radiation electrode 29 is reduced to about 800
0 V, negative ions are emitted from the radiation electrode 29, and the dust collection pack 28 is energized to apply about 4000 V DC between the discharge electrode 23 and the discharge counter electrode 24.
Starts operation with strong or weak wind and supplies negative ions to the room together with normal air cleaning.

Next, if the windless switch 39 is selected, the fan 7 stops and the operation is switched to the operation of only the fine ion wind generated by the potential difference between the discharge electrode 23 and the discharge counter electrode 24 of the dust collection unit 25. A quiet operation without noise of the fan 7 and the blower motor 6 starts, but the amount of ion wind is extremely small compared to the amount of air of the fan 7, so that negative ions generated at the radiation electrode 29 only drift around the outlet 20. In order to prevent this, the fan 7 is intermittently operated once for about one minute for about 30 minutes so that the negative ions are distributed to the whole room.

In order to prevent the concentration of ozone harmful to the human body generated in the dust collecting unit 25 from increasing due to the small air volume during the ion wind operation, the dust collecting unit 25 is repeatedly operated for about 8 minutes and stopped for 2 minutes. It is.

[0022]

As described above, according to the present invention, a pre-filter, an electrostatic dust collecting unit and a fan are provided in a housing,
In an air purifier capable of selecting an ion wind operation in which the forced operation by the fan and the fan are stopped and the operation is performed by an ion wind generated in the electrostatic dust collecting unit, a suction port provided in the housing is provided. A radiating electrode for generating negative ions is provided in a blowing path to the outlet, and the fan is operated intermittently during the ion wind operation, so that the negative ions spread throughout the room even during the ion wind operation with a small air volume. . Also, the operation of the electrostatic dust collecting unit is intermittently operated during the ion wind operation, so that an air purifier that generates less ozone even during the ion wind operation with a small air volume can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is an exploded perspective view of the main part.

FIG. 4 is a side cross-sectional view showing a simplified structure.

FIG. 5 is a sectional view of the main part.

FIG. 6 is a schematic diagram of the control circuit.

FIG. 7 is an explanatory diagram of the operating state.

[Explanation of symbols]

 7 fan 14 suction port 20 air outlet 25 dust collection unit 29 radiation electrode

Claims (2)

[Claims] 1. An ion machine comprising a pre-filter, an electrostatic dust collecting unit and a fan in a housing, and forcing the fan to operate and stopping the fan to operate by ion wind generated by the electrostatic dust collecting unit. In an air purifier capable of selecting a wind operation, a radiation electrode for generating negative ions is provided in a ventilation path from an inlet to an outlet provided in the housing, and the fan is operated intermittently during the ion wind operation. An air purifier characterized by the following. 2. A pre-filter, an electrostatic precipitator, and a fan in a housing, and an ion operated by an ion wind generated by the electrostatic precipitator by stopping the fan and forcibly operating the fan. In an air purifier capable of selecting a wind operation, a radiation electrode for generating negative ions is provided in a blowing path from an inlet to an outlet provided in the housing, and the electrostatic dust collecting unit is used during the ion wind operation. An air purifier characterized by intermittent operation.