JPS63137758A - Air purifier - Google Patents

Abstract

PURPOSE:To reduce noise and to efficiently perform purification, by making it possible to change over air purifying operation only due to ion wind and air purifying operation due to the ion wind and wind from a fan. CONSTITUTION:When the power source switch 9 connected to a power source 16 is closed, a current is supplied to an air purifier and, when a change-over switch 7 is on a b-side, a current is supplied to the high voltage generator 8 of a dust collection unit and positive high voltage is applied to an ionizing wire. By this method, dust is positively charged to be collected by a dust collection electrode plate negatively charged and ion wind is also generated to perform suction and discharge. Next, when the change-over switch 7 is change over to an a-side, a current is also supplied to a fan motor 3 in addition to the high voltage generator 8 of the dust collection unit. Since large capacity suction and discharge due to the rotation of a sirocco fan is performed in addition to the dust collection due to the suction and discharge by the ion wind, a purifying speed is increased and rapid countermeasure can be taken against heavy contamination.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an air cleaner that cleans indoor air.

(Conventional technology) Conventional air purifiers include those that generate ion wind using an ion wind generator and electrostatically collect dust using dust collection electrodes while air is being taken in and exhausted, and those that are placed behind the ionization section and dust collection section. It has been proposed to use a fan to suck in and exhaust air, and to collect the dust electrolytically in a dust collection section at the front.

(Problems to be Solved by the Invention) The above-mentioned conventional fan that takes in and exhausts air has a large amount of air movement, and while it is possible to increase the dust collection speed, it also causes noise from the fan drive motor and fan noise. Noise caused by wind noise cannot be avoided.

On the other hand, devices that generate ionized wind and suck and exhaust air have the advantage of making less noise, but compared to those using fan motors, the amount of intake and exhaust is smaller, so when there is a strong flow of air, it is difficult to clean the indoor air. This method has the disadvantage that it takes a long time to clean, so the ion wind generator must be larger in order to perform cleaning in a short time.

(Means for Solving the Problems) The present invention includes an ionization wire placed on the air intake side, in front of the air intake port and parallel to the front edge of the electrode plates arranged in parallel. An ion wind generator equipped with an electric dust collection function (■) is configured such that a fan is placed behind the ion wind generation mechanism, and a means for switching between operation and stop of the fan is connected to a means for detecting air pollution. did.

(Action) Air ilI? When the purifier is operating, the means to detect dirt in the room will stop the fan if there is a small amount of dirt, and perform electrostatic dust collection by sucking and exhausting only ionized air, and if it detects that there is a lot of dirt, the fan will start operating. The amount of suction and exhaust is increased to clean the area within a short time.

(Example) Next, a first example of the present invention will be described in detail with reference to the drawings. In FIGS. 1 and 2, l is the main body of the air purifier of the present invention, and in order from the air intake side 1a inside the main body, there is an intake prefilter 5, a dust collection unit 2, a deodorizing filter 6, and a filtration fan. 4 are arranged in the direction of the arrow indicating the direction of air movement. 3 is a fan motor connected to the sirocco fan 4, and 7 is an air 1I of the present invention.
This is a means for switching the operation of the lt purifier. 8 is a high voltage generator that applies high voltage to the iFi dust collection unit, 9 is a main power switch, and IO is a door switch that cuts off the power for safety when the panel of this purifier is opened.

The intake prefilter 5 is disposed at the inlet of the air, and is composed of a wire-like member for removing physically relatively large particles of dust.

The dust collection unit 2 is constructed as shown in FIG.
Directly towards the arrow indicating the direction of air inflow? :j?
! ! The corresponding electrode plate 13 that is charged and the dust collecting electrode plate 12 that is negatively charged
are arranged in parallel, and i
An ionization line 11, which is charged to a high positive potential, is arranged in parallel and at an appropriate distance from both sides. The deodorizing filter 6 is arranged behind the dust collection unit 2, and the inside thereof is filled with a deodorizing agent.

The electric circuit of the first embodiment, including the dust collection unit 2, fan motor 3, changeover switch, etc., is as shown in FIG. something is being used.

Next, the operating state will be explained.

In FIG. 4, the power switch 9 connected to the power supply 16 is turned off.
By switching to the N state, the air purifier is energized, and when the changeover switch 7 has selected the state b, the high voltage generator 8 of the dust collection unit is energized,
The fan motor 3 is not energized. When the high voltage generator 8 is energized, a positive high voltage is applied to the ionization line 11 to positively charge the dust in the air. A negative dust collection electrode plate 12 disposed behind the ionization line 11 collects this dust.
The intake pre-filter 5 provided on the air inflow side collects dust and generates an ion wind between the ionization wire 11, the dust collection electrode plate 12, and the corresponding electrode plate 13 to perform intake and exhaust. Air from which relatively large amounts of dust have been removed is introduced, and the dust is sequentially ionized and adsorbed onto the dust collecting electrode plate 12. The air discharged from the dust collecting unit passes through the deodorizing filter 6, is deodorized by the built-in deodorizing material, and the purified air is discharged from the main body 1.

Next, a case where state a is selected by operating the changeover switch 7 will be described. When the power switch 9 connected to the power source 16 is in the ON state and the selector switch 7 is in the a
By selecting this state, the fan motor 3 is energized in addition to the high voltage generator 8 of the dust collection unit 2.

As a result, as described above, the ionization line 11 of the dust collecting unit 2 is charged to a high positive potential, positively charging the dust in the air, and positively charging the corresponding electrode plate 13.
The dust collecting electrode plate 12 is loaded negatively to attract positively charged dust.

In this case, the fan motor 3 is energized to rotate the surface-mounted rotary fan 4, and in addition to the ion wind generated by the dust collection unit 2, intake and exhaust are performed to increase the air flow. ? 1
Accelerate speed change.

As described above, in the first embodiment, the air intake and exhaust for dust collection by the dust collection unit is performed only by the ionized wind by the dust collection unit, and the air intake and exhaust by the operation of the sirocco fan is performed by operating the fan motor. Added Shinoto 2
In the above example, the normal operating state is changed by changing the changeover switch, but as a second embodiment, the following example is shown in which the changeover is performed by detecting the indoor dirt condition.

As shown in FIGS. 5 and 6, in addition to the first embodiment, a dirt detection device 14 such as a smoke sensor detects dirt in the air.
As shown in FIG. 7, the output of the dirt detection device is connected to a relay drive circuit 15 that operates a relay 17 in response to a signal. The relay 17 described in 01J is provided with contacts similar to the changeover switch 7.

Next, its operation will be explained. Now, when the power switch 9 connected to the power source 16 is turned on, the lη deviation detection device 14 is turned on, and the degree of contamination such as smoke and dust in the air is determined. When there is little dirt in the air, no signal is output from the dirt detection device, so the relay drive circuit is inactive, the relay 17 is connected to the contact side of b, and only the high voltage generator 8 is activated. Jj
! The dust in the air is charged positively by the ionized wire 11 in the dust collection unit 2, and collected by the dust collection electrode plate 12. Relatively large dust particles are removed by the pre-filter 5, and the air is deodorized by the deodorizing filter 6 at the rear, thereby purifying the air.

When the air becomes extremely dirty, the dirt detection device 1
4 detects that the level of contamination has reached a certain level or higher, and outputs a control signal to the relay drive circuit 15, which turns on the relay 17 and connects it to the contact side of a. In addition to the high pressure generator 8, the fan motor 3 is energized, and in addition to the ion wind intake and exhaust, the sirocco fan 4 performs intake and exhaust to increase the air flow, and the prefilter 5 and the dust collection unit 2 , the air cleaning speed by the deodorizing filter 6 is increased. In addition to this ion wind, the state of dirt in the air changes due to intake and exhaust by the sirocco fan 4, and when the dirt detection device 14 detects that the dirt is below a certain level, the relay drive circuit 15 is turned off and the relay 17 is turned off. is connected to the contact side of b, the fan motor 3 is stopped and only the high pressure generator 8 is energized, and the dust collecting unit 2 is in an operating state using the ionized wind.

(Effects) As explained above, according to the present invention, it is possible to switch between air cleaning operation using only ionized air and air cleaning operation using ionized air and fan air. When there is relatively little dirt, it is possible to operate with less noise using only ionized air, and when there is a lot of dirt, air from a fan can be added to clean the air in a short time.

In addition, even when there is relatively little dirt, indoor air is constantly circulated using ionized wind, so smoke and other contaminants are not stagnated in one place and are purified. It also has the effect of reducing the detection error because it tends to be constant.

[Brief explanation of the drawing]

FIG. 1 is a front view of an air cleaner according to a first embodiment of the present invention;
Figure 2 is a sectional view of the unit, Figure 3 is a sectional view of the dust collection unit,
FIG. 4 shows its electric circuit, FIG. 5 is a front view of the air purifier of the second embodiment, FIG. 6 is its sectional view, FIG. 7 is the electric circuit of the second embodiment, and 4 is a front view of the air purifier of the second embodiment. Fan, 7 is a changeover switch, 11 is an ionization wire, 12 is a dust collector? Ii
13 is a counter electrode plate, and 14 is a detection means.

Claims (2)

[Claims] (1) An ion wind generation mechanism equipped with an electrostatic precipitator function, which includes electrode plates arranged in parallel and an ionization wire placed in front of the front edge of the electrode plate and parallel to the front edge;
An air cleaner comprising: a fan disposed behind the ion generating mechanism; and switching means for operating and stopping the fan. (2) The switching means is connected to air pollution detection means, and the switching means is configured to operate according to the detection result.
The air purifier described in section.