KR20120017631A - Ion generating apparatus and air cleaning system using the same - Google Patents

Abstract

PURPOSE: An ion generating device and an air cleaning system using the same are provided to maintain indoor air clean by controlling ion generation amount according to dust amount, a relative humidity, and an air quality and get rid of toxic gas. CONSTITUTION: An air cleaning system comprises a ventilation device(100), an ion generating device(300), sensors(400), and a controlling device(200). The ventilation device performs ventilation between inner and outer spaces by opening and closing according to control signals of the controlling device. The sensors measure dust amount, a relative humidity, and an air quality of the surrounding environment. The controlling device controls an opening and closing of the ventilation device, and ion generation amount of the ion generating device.

Description

ION GENERATING APPARATUS AND AIR CLEANING SYSTEM USING THE SAME}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ion generating device used in an air purifying device and the like, and relates to an ion generating device capable of controlling an ion generating amount according to an ambient environment (relative humidity, dust amount and air quality) and an air purification system using the same.

Typically, an air purification system refers to a system that filters clean impurities in air in a closed room and supplies clean air to the room. Such air purification systems are widely used in closed rooms. For example, an air purifying system for protecting a human body or precision equipment is operated in offices such as general cement buildings, spawn culture rooms, workplaces where dust is generated, and places where precision equipment is operated.

In addition, as society develops, most modern people spend a long time living indoors, which keeps the indoor air fresh. Accordingly, most homes and offices have a separate air purification system that can purify the air to convert the indoor air into health-friendly air.

In recent years, an ion generating device is used to artificially increase the concentration of ions.

These ion generators have recently been used in electronic devices such as air cleaners or air conditioners. The ion generator generates a partial discharge by applying a high voltage of several to several thousand Kv to the positive electrode part and the negative electrode part to generate positive and negative ions.

In general, in most homes and offices, the ratio of anions and cations in the air is typically about the same. However, when the concentration of anion is in the atmosphere of several tens to hundreds of times the cation, it is widely known that it is possible to obtain medical effects such as fatigue recovery, mental stability, purification of blood, enhancement of resistance, and autonomic nerve adjustment.

In addition, anion and cation means a state in which molecules such as oxygen and nitrogen in the air have a negative and positive charge, respectively, of which anion is very beneficial to the human body and is effective in removing dust and odors. There are reports of effects of killing bacteria and microorganisms in the air.

In the case of such an ion generating device, a method of using ultraviolet rays, a method of using high-pressure corona discharge, a method of using radiation such as beta rays, a method of using water droplets, and the like are used.

However, in the case of existing devices that generate ions such as anions, the amount of negative ions generated is small compared to the size of the device, and it is difficult to use in a home or other enclosed indoor space (for example, inside a car).

In addition, the conventional ion generating device generates a high-voltage direct current output voltage by generating a sine wave or a square wave of a certain period, thereby generating ions. However, this conventional method has a disadvantage of generating more ozone than necessary together with the anion. In addition, since the ion generation amount is constant, there is a disadvantage that the amount of ions in the air is not constant.

Accordingly, the present invention has been made to solve the above problems, and provides an ion generating device and an air purification system using the same to adjust the amount of ions generated according to the amount of dust, relative humidity and air quality to keep the indoor air clean. do.

A ventilation device which opens and closes according to a control signal of a control device according to the present invention for achieving the above object and is responsible for ventilation between an internal space and an external space; Ion generating apparatus for generating ions; Sensing device for measuring the amount of dust, relative humidity and ambient air quality; And a control device which opens or closes the ventilation device or controls the amount of ion generation of the ion generating device according to the sensing result of the sensing device.

The ion generating device includes an input DC power supply for providing a DC power supply, a square wave control unit for periodically switching the DC power input according to a signal of the control device, and a DC power periodically switched by the square wave control unit at a high voltage. And a high voltage generator for converting the DC output voltage and an ion generator for generating ions by receiving the high voltage DC output voltage of the high voltage generator.

The sensing device may include a dust sensor for measuring the amount of dust, a temperature / humidity sensor for measuring relative humidity, and a gas sensor for measuring air quality.

The control device may include a signal input unit configured to receive a sensing result from the sensing device, a standby state determiner configured to read the input signal to determine a current standby state, and a standby state determined by the standby state determiner. A signal output unit for generating and outputting an on / off signal for driving a ventilator or a control signal for controlling the increase or decrease of the ion generation amount of the ion generating device, and outputting the control signal according to the dust amount, relative humidity and ambient air quality It is characterized by controlling the intensity.

When the amount of dust sensed by the sensing device increases, the ambient humidity increases, or the air quality (ie, harmful gas) increases, the amount of generated ions increases.

In addition, the present invention provides an input DC power supply unit for providing a DC power; Sensing unit for measuring the amount of dust, relative humidity and air quality; A control unit generating a control signal according to the measurement result of the sensing unit; A square wave controller for periodically switching the DC power input according to the signal of the controller; A high voltage generator converting the DC power periodically switched by the square wave controller into a high voltage DC output voltage; It provides an ion generating device comprising an ion generating unit for generating ions by receiving a high voltage DC output voltage of the high voltage generating unit.

The sensing unit includes a dust sensor for measuring the amount of dust, a temperature / humidity sensor for measuring relative humidity, and a gas sensor for measuring air quality, and as the output of the sensing unit is increased, the output of the controller increases. It is characterized in that the ion generation amount of the ion generating unit increases.

The present invention can keep the indoor air clean by adjusting the amount of ions generated according to the amount of dust, relative humidity and air quality. The present invention can remove noxious gases (eg formaldehyde).

1 is a conceptual diagram of an air purification system according to an embodiment of the present invention.
2 is a conceptual diagram of an ion generating device according to an embodiment.
3 and 4 are graphs for explaining a change in the amount of ion generation according to the humidity of the ion generator of one embodiment.
5 is a conceptual view illustrating dust removal according to an embodiment.
6 is a graph illustrating dust removal characteristics of one embodiment.
FIG. 7 is a graph illustrating formaldehyde removal characteristics of one embodiment. FIG.

DETAILED DESCRIPTION Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a conceptual diagram of an air purification system according to an embodiment of the present invention. 2 is a conceptual diagram of an ion generating device according to an embodiment.

Referring to FIG. 1, the air purifying system according to the present embodiment is opened and closed according to a control signal of the control device 200 to perform ventilation between an internal space and an external space, and an ion generating ion. The device 300, the sensing device 400 for measuring the dust amount, the relative humidity and the ambient air quality of the internal space, and the opening and closing of the ventilation device 100 according to the sensing result of the sensing device 400, or the ion It includes a control device 200 for controlling the ion generation amount of the generator 300.

Such an air purification system of this embodiment can be used in various areas. That is, it can be used for home or office, and can also be used in a device such as a vehicle. The air purifying system is applied in an enclosed space where a person lives or is located, so as to be comfortable to the user and to remove fine dust.

As described above, the ventilation device 100 may communicate between the internal space and the external space so that external air may be introduced into the internal space. To this end, in the present embodiment, it is possible to use a fan as the ventilation device 100. Of course, various other types of ventilation devices may be used. In addition, the ventilation device 100 is preferably on / off according to the signal of the control device 200. Therefore, although not shown, the ventilation device 100 includes a ventilation fan and includes a ventilation control unit for controlling the operation of the ventilation fan. At this time, the operation of the ventilation control unit 200 is controlled.

The ion generator 300 includes an input DC power supply unit 310 for providing DC power, a square wave control unit 320 for periodically switching the DC power input according to a signal from the control device 200, and a square wave control unit 320. A high voltage generator 330 for converting the DC power periodically switched to a high voltage DC output voltage, and an ion generator for generating ions by receiving the high voltage DC output voltage of the high voltage generator 330. 340).

The input DC power supply unit 310 provides a DC power supply to the high voltage generator 330. To this end, the AC power supplied from the outside (for example, home 220V) can be rectified to provide a DC power, or a DC power supply from a separate DC power supply (for example, a battery). Although not shown, the input DC power supply unit 310 has two output terminals, one terminal of which is connected to the high voltage generator 330, and the other terminal of which is connected to the square wave control unit 320.

At this time, in the present embodiment, the pulse width (ie, pulse period) of the DC power provided to the high voltage generator 330 is varied according to the output signal of the control device 200. Of course, amplitude modulation may be performed in addition to the pulse width. Through this, the output of the high voltage generator 330 may be controlled, and accordingly, the ion generation amount of the ion generator 340 may be controlled. The control device 200 increases the voltage level of the application signal according to the ambient pollution and the relative humidity. Of course, other cases are possible.

The square wave control unit 320 controls the switching cycle of the input DC power supply unit 310 according to the control signal of the control device 200, and modulates the pulse width of the input power provided to the high voltage generator 330. In this case, the oscillation circuit may be used as the square wave control unit 320, and the output frequency of the circuit may be generated by changing. Of course, the microwave PWM control circuit may be used as the square wave control unit 320. Here, the PWM circuit and the oscillation circuit may be manufactured in the form of a chip.

The high voltage generator 330 converts the input power provided by the square wave controller 320 into a high voltage and outputs the converted high voltage. At this time, the high voltage generator 330 uses a transformer for converting the input power into a high voltage according to the variation of the number of coils wound on the primary side and the secondary side.

Here, in the case of the input power provided by the square wave controller 320 to the primary side of the high voltage generator 330, the pulse width thereof is modulated. Therefore, the pulse width of the output power output from the secondary side is also modulated. That is, the secondary output voltage of the high voltage generator 330 increases as the pulse width of the input power provided to the primary side decreases, and the secondary output of the high voltage generator 330 increases as the pulse width of the primary input power increases. The voltage becomes small.

As described above, in the present exemplary embodiment, the amount of ions generated from the ion generator 330 may be controlled by adjusting the pulse width of the power source provided to the primary side of the high voltage generator 330 according to the dust amount, the relative humidity, and the air quality.

The ion generator 340 generates ions according to the output power of the high voltage generator 330. The ion generator 340 includes an anion generator 341 and a positive ion generator 520.

As described above, the ion generating device 300 may adjust the ion generation amount according to the control signal of the control device 200.

The control device 200 provides a control signal for controlling the amount of ion generation to the ion generating device 300 according to the results sensed by the sensing device 400.

That is, the control device 200 includes a signal input unit for receiving a sensing result from the sensing device 400, a standby state determination unit reading the input signal to determine a current standby state, and the standby state determination unit. And a signal output unit for generating and outputting an on / off signal for driving the ventilation device 100 or a control signal for controlling the increase or decrease of the ion generation amount of the ion generating device 300 according to the determined standby state. It is effective to use a control board including a microprocessor as the control device 200.

The air condition determiner determines the amount of dust, relative humidity, and ambient air quality. At this time, the criteria are separated into three cases. For example, when the amount of dust is separated into three criteria and the input sensing result is less than or equal to the first criterion, the dust is determined to be less. And when it is more than 1st reference | standard and less than 2nd reference | standard, it is determined that there exists dust. In addition, when more than 2nd reference | standard is determined, it is determined that there is much dust. In this way, the degree of pollution of the relative humidity and the surrounding air quality is determined.

Accordingly, when all are less than the first criterion, the ventilator 100 is turned off, and signals for reducing the amount of generated ions or maintaining the current state are output. When there are two or more cases of the first reference and the second reference or less, the ventilation device 100 outputs a signal for increasing the amount of generated ions while maintaining the same. In addition, when the second reference value is at least one or more, the ion generation amount is increased, and the ventilation device 100 is turned on to ventilate the air in the internal space. At this time, it is effective that the output level of the control signal is changed in some cases.

Furthermore, in the present embodiment, it is effective to increase the amount of generated ions when the amount of dust increases, the ambient humidity increases, or the harmful gas increases.

On the contrary, when the amount of dust and air pollution increase, the ventilation device 100 may be turned off to prevent external dust and contaminated air from entering the inside.

In the above description, it has been described that the control device 200 performs the above operation, that is, the operation of automatically turning on / off the ventilation device 100 and automatically adjusting the amount of generation of the ion generating device 300 by automation. However, the present exemplary embodiment is not limited thereto, and an operation of the control apparatus 200 may be controlled by a user. That is, manual operation is possible. When the control apparatus 200 corresponds to the case, the control apparatus 200 may notify the user by a lamp or a voice and output control signals according to an input operation of the user.

The sensing device 400 provides a sensing signal corresponding to a determination criterion of the control device 200 performing the above operation.

The sensing device 400 of the present embodiment measures the amount of dust, relative humidity and air quality, and provides the same to the control device 200. The sensing device 400 includes a dust sensor 410 for measuring the amount of dust, a temperature / humidity sensor 420 for measuring relative humidity, and a gas sensor 430 for measuring air quality.

It is effective to use an optical dust sensor as the dust sensor 410.

The gas sensor 430 uses a VOC gas sensor, CO gas sensor, NOx gas sensor, ozone gas sensor, alcohol (Alcohol) gas sensor that can identify the harmful gas. Of course, the present invention is not limited thereto, and various types of sensors capable of measuring air pollution may be provided.

In this embodiment, the output of the sensor may be output as a sensing control signal, and the output of each sensor may be summed into one piece of information and the result may be output as one sensing control signal.

Furthermore, in the present embodiment, the temperature / humidity sensor 420 may be additionally disposed to prevent ions from decreasing with humidity.

In the present invention, the main technique is to measure relative humidity and increase the amount of generated ions according to the measurement result. At this time, it is good to be sure of the reason and reason that the high humidity increases the amount of generated ions.>

3 and 4 are graphs for explaining the change in the amount of ion generation according to the humidity of the ion generator of one embodiment.

3 and 4 generates a certain amount of ions with an ion generator, and the relative humidity was adjusted using a humidifier. Referring to the drawings, it can be seen that the amount of ions in the ion generator varies with relative humidity. That is, it can be seen that the ion generator has an influence on the humidity.

Therefore, in this embodiment, the temperature / humidity sensor 420 may be further disposed in consideration of the influence of the ion generator according to humidity, thereby increasing or decreasing the amount of ions generated from the ion generator.

5 is a conceptual view illustrating dust removal according to an embodiment. 6 is a graph illustrating dust removal characteristics of an embodiment, and FIG. 7 is a graph illustrating formaldehyde removal characteristics of an embodiment.

As described above, in the present exemplary embodiment, dust in the air may be dropped onto the ground by the ions generated by the ion generating device 300. That is, the suspended matter can be removed.

As shown in FIG. 5, since the suspended matter in the air is positively charged, these substances are neutralized by the negative ions so that they do not float in the air and fall to the bottom to be removed from the air. That is, VOC, tobacco smoke, dust, and the like have a positive charge, and negative ions generated by the ion generating device 300 are adsorbed on their surfaces. Then, they fall on the ground that is positively charged so that these floats can be removed.

For this purpose, the air purification inside the apartment was tested as shown in FIG. That is, as shown in the drawing, the device was installed inside a 30-pyeong apartment and measured the amount of dust reduction with time, and the device was installed inside the 50-pyeong apartment to measure the dust reduction with time. The dust reduction over time (ie, natural reduction) was measured while the apparatus was not running.

time 30 equilibrium 50 equilibrium 50 equilibrium (natural reduction) 0 Measuring machine Measuring machine - One 2.185 2.235 2.239 2 1.220 1,000 1.725 3 0.311 0.158 1.436 4 0.109 0.021 1.136 5 0.059 0.012 0.986 6 0.033 0.010 0.830 7 0.027 0.005 0.678 8 0.017 0.005 0.584

As a result of measuring the dust through the apparatus as shown in Table 1 and Figure 6, it can be seen that the amount of dust is sharply reduced after the operation of the apparatus and the measuring instrument. Even after only eight hours of natural shelter, the dust level is quite high at 0.584. At this time, the dust measurement unit is mg / m ³ .

In addition, the ion generating device and system of the present embodiment can also remove harmful gases. That is, for example, formaldehyde causing sick house syndrome can be removed in a short time as shown in FIG. 7.

That is, Figure 7 (a) is a measure of the amount of formaldehyde over time when the apparatus of the present embodiment is not running, Figure 7 (b) is a formaldehyde amount over time after the operation of the apparatus It is measured. These were all measured after application of formaldehyde in a test chamber of 2 × 2 × 2M.

As shown in (a) of FIG. 7, when the apparatus is not operated, it rises to 5 ppm after the application of formaldehyde, and finds stability at 3.5 ppm, and then decreases naturally. However, it can be seen that when the apparatus is operated as shown in FIG.

As described above, in the ion generating device and the system according to the present embodiment, the amount of generated ions is controlled according to the ambient humidity, and the amount of generated ions can be controlled to remove not only suspended matters but also harmful environmental gases in a short time.

The present embodiment is not limited to the above description, and the sensing device 400 and the control device 200 may be integrated into the ion generating device 300 as a part.

100: ventilation device
200: control unit
300: ion generator
400: sensing device
410 dust sensor
420 temperature / humidity sensor
430: Gas Sensor

Claims (7)

A ventilation device which opens and closes according to a control signal of a control device and is responsible for ventilation between an internal space and an external space;
Ion generating apparatus for generating ions;
Sensing device for measuring the amount of dust, relative humidity and ambient air quality; And
And a control device that opens or closes the ventilation device or controls the amount of ion generation of the ion generating device according to a sensing result of the sensing device. The method of claim 1,
The ion generating device includes an input DC power supply for providing a DC power supply, a square wave control unit for periodically switching the DC power input according to a signal of the control device, and a DC power periodically switched by the square wave control unit at a high voltage. And a high voltage generation unit for converting the direct current output voltage, and an ion generation unit for generating ions by receiving the high voltage DC output voltage of the high voltage generation unit. The method of claim 2,
The sensing device includes a dust sensor for measuring the amount of dust, a temperature / humidity sensor for measuring relative humidity, and a gas sensor for measuring air quality. The method of claim 3,
The control device may include a signal input unit configured to receive a sensing result from the sensing device, a standby state determiner configured to read the input signal to determine a current standby state, and a standby state determined by the standby state determiner. A signal output unit for generating and outputting an on / off signal for driving a ventilator or a control signal for controlling the increase or decrease of the ion generation amount of the ion generating device, and outputting the control signal according to the dust amount, relative humidity and ambient air quality Known purification system, characterized in that to control the intensity. The method of claim 4, wherein
And when the amount of dust sensed by the sensing device increases, the ambient humidity increases, or the air quality (ie, harmful gas) increases, the amount of generated ions increases.
An input DC power supply unit providing a DC power supply;
Sensing unit for measuring the amount of dust, relative humidity and air quality;
A control unit generating a control signal according to the measurement result of the sensing unit;
A square wave controller for periodically switching the DC power input according to the signal of the controller;
A high voltage generator converting the DC power periodically switched by the square wave controller into a high voltage DC output voltage;
And an ion generator configured to generate ions by receiving a high voltage DC output voltage of the high voltage generator. The method of claim 6,
The sensing unit includes a dust sensor for measuring the amount of dust, a temperature / humidity sensor for measuring relative humidity, and a gas sensor for measuring air quality,
As the output of the sensing unit increases, the output of the control unit also increases, thereby increasing the ion generation amount of the ion generating unit.

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