KR20200023012A - Indoor air control unit including functions for radon reduction and radon measurement - Google Patents

Abstract

The present invention relates to an air control device that reduces radon by introducing indoor air while simultaneously displaying radon information on indoor air in real time. Provided is an indoor air control device having radon reduction and radon measurement functions, including: an air purification unit that has a radon reduction means to reduce air pollutants and radon; a radioactivity measurement unit that measures radon radioactivity in the air; and a temperature and humidity control unit that controls air temperature and humidity.

Description

Indoor air control unit for radon reduction and radon measurement {INDOOR AIR CONTROL UNIT INCLUDING FUNCTIONS FOR RADON REDUCTION AND RADON MEASUREMENT}

The present invention relates to an indoor air control device, and more particularly, to an indoor air control device including a radon reduction and a radon measurement function for measuring and reducing the concentration of radon, a radioactive inert gas that is a major cause of lung cancer.

Radon ( ²²² Rn) is a gaseous natural radioactive substance that exists anywhere in nature. Further, radon ⁽²²² Rn), after alpha decay of the uranium decay series radium ⁽²²⁶ Ra, the half-life 1620 years), and naturally occurring, radium ⁽²²⁶ Ra, the half-life 1620 years) is natural or the like soil, building materials, rock, mineral It is contained as an enemy.

In addition, radon ( ²²² Rn) repeats the process of releasing alpha particles (alpha rays) with a half-life of 3.8 days. Radon's daughters ( ²¹⁸ Po, ²¹⁴ Pb, ²¹⁴ Bi, ²¹⁴ Po) also have the property of releasing short half-life alpha particles. In addition, radon gas and radon daughter nucleus have been shown to cause lung cancer when exposed to the human body for a long time through respiration.

More specifically, the World Health Organization (WHO) estimates that 3-14% of lung cancer patients are due to radon and radon daughter nuclides. The US Environmental Protection Agency (EPA) also reported that over 10% of Americans' annual lung cancer deaths are due to prolonged exposure to radon daughter nuclides, which is more than ten times higher than the risk of death from air pollution.

Radon daughters, on the other hand, are charged and are likely to adhere to dust, water vapor and tobacco smoke in the air, forming aerosols or adsorbing onto the surface of materials. Thus, when a person inhales or directly inhales radon daughter nucleus through breathing, the lungs absorb it and are exposed to the long term by alpha particles. Thus, radon or radon daughter nucleus are a major cause of lung cancer.

Radon is an inert gas that does not chemically bond or adhere to other materials and has a long half-life and therefore stays in the air for a long time. Therefore, the effect of radioactive exposure is much greater than that of other naturally radioactive elements, and the exposure by radon and radon daughter nucleus accounts for about 50% of the annual effective dose of the general public.

In addition, radon is colorless, tasteless, and odorless, making it impossible to detect even if a person inhales radon gas. Therefore, there is a need for a method of minimizing radon exposure in real life, and radon measurement and radon management techniques are very urgent.

As people live most of their lives indoors today, the need for abatement techniques for radon and radon daughter nuclei in the room is expanding. In particular, the more difficult ventilation or closed space, the higher the concentration of radon and radon daughter nucleus, which increases the risk. Therefore, the need for indoor radon abatement technology is increasing along with raising awareness of the health risks of radon.

Currently, techniques for reducing radon are mainly proposed using activated carbon filters in air purifiers. High-purity activated carbon has very fine pores, and radon adsorbed in the pores does not escape until it reaches a certain concentration, thereby reducing radon in the air.

However, no heater or air conditioner, a dehumidifier, or a humidifier used in winter or summer has been used to reduce radon such as activated carbon filters. In fact, the higher the radon concentration in a room, the more difficult it is to ventilate the room. Therefore, radon abatement means are required for indoor air control devices such as heaters, air conditioners, dehumidifiers or humidifiers.

Methods for measuring radon include ionization, luminous effects, and traces, depending on the interaction principle between the alpha particles emitted from radon and the measurement medium. In addition, detectors for measuring radon concentration in real time include a pulsed ion chamber, a scintillation cell, and a silicon semiconductor.

The scintillator detector applies scintillator material such as ZnS (Ag) which is sensitive to heavy charged particles on the inner wall of the dark chamber, and then measures the radon in the air by introducing air into the vessel using a pump. The alpha particles emitted from radon emit light by causing ZnS (Ag) and excitation to emit light. The photomultiplier also converts this light into an electrical pulse signal that counts alpha particles.

The scintillator detector has a high sensitivity, but the ZnS (Ag) scintillator material is vulnerable to an environment such as moisture, and requires expensive photomultiplier tubes.

On the other hand, the silicon semiconductor detector locates the silicon semiconductor detector in the center of the dark container. The high voltage is applied between the vessel wall and the detector to form an electric field, and then the radon concentration is continuously measured by colliding alpha particles emitted from radon introduced into the vessel onto the detector surface. Semiconductor detectors are resistant to external environments such as vibration and humidity, but radon is measured only when alpha particles collide with the detector surface in two dimensions. Therefore, the relatively small size of the semiconductor detector is very low sensitivity, the price of the large surface area detector is very expensive.

The pulsed ionosphere consists of an external electrode and an internal collecting electrode of a breathable structure through which air flows well. In addition, the pulse type ionizing box applies a high voltage between the external electrode and the collecting electrode to form an electric field inside the ionizing box.

In addition, the air introduced into the pulsed ionization box is ionized by alpha particles emitted by radon. The electrode of the pulsed ionizer collects ionized ions, and the charge-sensitive amplifier converts it into a pulse signal and counts the pulses to measure radon in real time.

The pulsed ionizing box has a measurable signal level of tens of fC, which requires attention to the signal processing circuit and is vulnerable to leakage current, but has high sensitivity and low cost.

Republic of Korea Patent Publication No. 10-2018-0066393 (June 19, 2018 published) "Radon detection system and detection method using an image sensor module having a digital output" Republic of Korea Patent Publication No. 10-1843515 (Registered Mar. 23, 2018) “Radon Removal Device” Republic of Korea Patent Publication No. 10-1837746 (registered on March 6, 2018) "Radon gas reduction method and system using a virtual sensor"

Accordingly, an object of the present invention for solving this problem is to provide a room air control apparatus that can measure and display the radon concentration in the room in real time, and to reduce the radon concentration.

In order to achieve the above object, the present invention radon reduction and radon indoor air control device capable of measuring the air purification unit for reducing the concentration of pollutants contained in the air flowing into the inside, the radioactive concentration of the radioactive material contained in the air Radioactivity measuring unit for measuring the temperature and humidity control unit for adjusting the temperature and humidity of the air.

In addition, the indoor air control device is an environmental measurement unit for measuring environmental information including at least one of the temperature, humidity and pollution degree of the air, the radiation concentration measured by the radioactivity measuring unit and the environment measured by the environmental measurement unit The display unit may further include a display for displaying at least one of the information and a warning lamp for displaying a warning when the radiation concentration is greater than or equal to a preset dangerous concentration.

The indoor air control device may further include an operation unit that receives at least one input of a target temperature, a target humidity, a target radiation concentration, and a target pollution degree.

The indoor air control device may include an air intake module that sucks air into the inside, an air inlet formed in the outer case, and an air outlet through which the air is introduced.

The radioactivity measuring unit outputs an output signal indicating a radioactivity concentration by using power supply means for applying a voltage between the anode to which the electrons move, the cathode to which the cations move, the anode and the cathode, and the pulse current generated by the electrons or the cations. It may include a signal processing module to generate.

The radioactivity measuring unit further includes an internal environmental sensor for measuring an internal temperature, humidity, or pressure of the radioactivity measuring unit and an internal temperature control module for adjusting a temperature of the radioactive measuring unit, wherein the signal processing module is configured to include the internal environmental sensor. The difference in temperature may be compensated by comparing the measured temperature, humidity, or pressure with a reference value.

The radioactivity measuring unit may further include a guard electrode disposed between the anode and the cathode to remove a leakage current.

The radioactivity measuring unit may further include an auxiliary electrode disposed on the side of the anode to remove noise generated from the anode.

The signal processing module includes a low level discriminator (LLD) for removing noise below a predetermined minimum signal value from an input signal and an upper level discriminator (ULD) for removing noise above a predetermined maximum signal value from an input signal. can do.

The anode may be made of or coated with at least one of chromium, platinum, gold, titanium, carbon, nickel, stainless steel, iron, silver, copper, beryllium, molybdenum, palladium, tungsten, rhenium, tin, brass, inconel, gallium and lead. Can be.

The radioactivity measuring unit may further include a grid electrode disposed between the cathode and the anode, wherein electrons and cations are generated between the cathode and the grid electrode, and the electrons may pass through the grid electrode and be collected at the anode.

The radiation measuring unit may have a separation distance between the cathode and the grid electrode larger than the separation distance between the amorphous particles of the alpha particles and the grid electrode and the anode.

According to the indoor air control apparatus capable of reducing radon and measuring radon of the present invention described above, there is an effect of controlling the temperature and humidity of the room and simultaneously measuring and reducing the concentration of radon.

1 is a view showing an indoor air control device capable of reducing radon and measuring radon which is an embodiment of the present invention.
2 is a view showing a cross-sectional view of an indoor air control device capable of reducing radon and measuring radon as an embodiment of the present invention.
3 is a view showing an embodiment of a temperature and humidity control unit of one configuration of the present invention.
Figure 4 is a view showing a perspective view of the radioactivity measuring unit of one configuration of the present invention.
5 is a block diagram of a signal processing module of one configuration of the present invention.
Figure 6 is a view showing a perspective view of a grid-shaped iono embodiment that is an embodiment of the radioactivity measuring unit of one configuration of the present invention.
Figure 7 is a view showing a perspective view of a flat type ionizing box which is an embodiment of a radioactivity measuring unit which is one configuration of the present invention.

The terms or words used in this specification and claims are not to be construed as limiting in their usual or dictionary sense, and the inventors may properly define the concept of terms in order to best describe the user's invention in the best way possible. On the basis of this, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, except to exclude other components unless otherwise stated. In addition, the “…” described in the specification. Wealth ”,“… Gi ”,“… However, terms such as “module”, “device”, and the like refer to a unit that processes at least one function or operation, which may be implemented as a combination of hardware and / or software.

In an embodiment of the present invention, terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

In addition, in the embodiments of the present invention, the singular forms "a", "an" and "the" include plural forms unless the context clearly indicates otherwise.

In addition, in the embodiments of the present invention, the terms "comprise" or "have" are intended to designate that there exists a feature, number, step, operation, component, part, or a combination thereof described in the specification. Or other features or numbers, steps, operations, components, components or combinations thereof, or those in combination thereof should not be excluded in advance.

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

1 is a view showing an indoor air control device capable of reducing radon and measuring radon which is an embodiment of the present invention. In addition, Figure 2 is a view showing a cross-sectional view of the indoor air control device capable of radon reduction and radon measurement of an embodiment of the present invention.

Referring to FIG. 1, an indoor air control device (hereinafter, referred to as an “air control device”) capable of reducing radon and measuring radon may include an air inlet 30, an air outlet 40, a display unit 400, a warning light 500, and an operation unit. 700 may be included.

In addition, referring to Figure 2, the air control device 10 of the present invention is an air intake module 50, temperature and humidity control unit 100, radioactivity measuring unit 200, air purification unit 300 and environmental measurement unit therein 600 may be included.

More specifically, the air intake module 50 may be implemented as a motor fan or a pump, and may take in the outside air into the air control device 10.

In addition, the air inlet 30 may be formed in the outer case 20 of the air control device, and may introduce external air into the inside. In addition, the air outlet 40 may discharge the air introduced into the outside to the outside. Therefore, air can circulate inside the air control device in the direction of the arrow in the figure.

And the air purification unit 300 may reduce the concentration of contaminants such as fine dust, hair, pollen, radon or radon daughter nucleus contained in the air introduced into the inside.

More specifically, the air purifying unit 300 may include a first filter 310, a second filter 320 and a third filter 330, it is possible to filter the pollutants by passing air through each filter. have.

In addition, the first filter 310 is a filter that filters the largest particles, and the particles included in the air may filter out contaminants such as large dust, hair, and pollen.

In addition, the second filter 320 may pass through the first filter 310 to remove contaminants having a minute size from the air in which large particles are filtered. In particular, the second filter 320 may reduce the concentration of radon and radon daughter nuclide.

The second filter 320 may be implemented as an activated carbon filter. Here, since activated carbon is porous, its surface area is wide and its adsorptivity is strong, so that radon and radon daughter nuclides can be effectively removed.

In addition, the second filter 320 may remove various contaminants such as volatile organic compounds, such as formaldehyde, acetaldehyde, toluene or acetic acid, which cause sick house syndrome.

However, the second filter 320 is not limited to an activated carbon filter, and may be implemented as various types of filters such as adsorbents in the form of nanoparticles, impregnated activated carbon, powdered activated carbon, granular activated carbon, and water vapor.

In addition, the third filter 330 is a filter that filters the smallest particles, and may remove ultrafine dust, yellow dust, bacteria, mold, tobacco smoke, and the like in the air.

In addition to the first filter 310, the second filter 320, and the third filter 330, the air purifier 300 may include various functional filters such as a deodorizing filter and a sterilizing filter.

In addition, the air purification unit 300 may be implemented with at least one of X-rays, beta-rays, photocatalysts, plasma sterilization filters, ultraviolet rays, electrostatic precipitating filters, ion clusters, anion filters, and hybrid filters.

And the radioactivity measuring unit 200 may measure the radioactivity concentration of the radioactive material contained in the air.

Here, activity refers to the intensity of the radioactive material, which indicates the ability of the radioactive material to emit radiation, and specific activity refers to radioactivity per unit weight or volume.

Hereinafter, for convenience of description, the word radioactivity concentration is used, but this may mean non-radioactivity, radioactivity, dose and dose rate.

Here, the dose may refer to the amount of radiation received by the substance or organism. In addition, the dose rate may mean a dose per hour.

The alpha particles produced due to the collapse of radon can separate air into electrons and cations.

In addition, the radioactivity measuring unit 200 may collect the separated electrons to the anode 220, and collect the cations to the cathode 210. In addition, the radioactivity measuring unit 200 may measure the radioactivity concentration using a pulse current generated by the collected electrons or cations.

In addition, the radiation measuring unit 200 may be any one of a gas detector such as an ion chamber, a grid ionized chamber, or a Frisch-Grid ion chamber, a GM Muller counter, and a proportional counter. It can be implemented as one.

In addition, the radioactivity measuring unit 200 may be implemented as a gas flow to allow the air to flow therein to measure the radioactive concentration of radioactive material contained in the air sucked by the air intake module 50.

In addition, when the radiation concentration measured by the radioactivity measuring unit 200 is greater than or equal to a preset dangerous concentration, the warning lamp 500 may display a warning.

The warning light 500 may be disposed on the outer case 20 so that the user can check it.

The temperature and humidity control unit 100 may control the temperature by cooling or heating the air, or may control the humidity by dehumidifying or humidifying.

More specifically, the temperature and humidity control unit 100 is implemented as a heat exchanger for controlling the temperature, it is possible to circulate the refrigerant by circulating the refrigerant or hot water. In addition, the temperature and humidity control unit 100 may include a compressor, a condenser, an expansion valve, and an evaporator.

In addition, when the temperature and humidity control unit 100 is implemented as a dehumidifier, the temperature and humidity control unit 100 is a silica gel (silica 하는 gel), alumina gel (alumina gel), molecular ( molecular weights) and the like.

In addition, the temperature and humidity control unit 100 may be implemented as an active control means such as a heat exchanger, a ceramic heater, an infrared ray, a hot wire heater, a Peltier element, etc., and implemented as a passive control means such as a dehumidification filter, a dehumidification rotor, and a phase change material. Can be.

And the temperature and humidity control unit 100 may be implemented in a variety of shapes, such as circular or flat.

The environmental measurement unit 600 may measure environmental information including the temperature, humidity, and pollution degree of air introduced into the air control device 10. Here, the pollution degree may be a numerical value representing the degree of pollution of the air including the concentration of air dust, VOCs, carbon dioxide, carbon monoxide or smog.

In addition, the display unit 400 may be formed in the outer case 20 of the air control device so that a user may check the same.

The display unit 400 may display the radiation concentration measured by the radioactivity measuring unit 200 or the environmental information measured by the environment measuring unit 600.

In addition, the operation unit 700 may receive a target temperature, a target humidity, a target radiation concentration, or a target pollution level. In addition, the manipulation unit 700 may be formed in the outer case 20 so as to be implemented as a button so that the user may easily input the same.

The temperature and humidity control unit 100 may adjust the temperature and humidity of the air to reach the target temperature and the target humidity received from the operation unit 700.

In addition, the air intake module 50 may control the operation speed and the operation time of the motor or the pump to reach the target radiation concentration or the target pollution degree input from the operation unit 700.

3 is a view showing a heat exchanger as an embodiment of a temperature and humidity controller of one configuration of the present invention.

Referring to FIG. 3, the heat exchanger may include a heat exchange pipe 110 and a heat exchange member 120.

In addition, the heat exchange pipe 110 may transfer heat to the heat exchange member 120 while circulating a fluid that is a refrigerant or a heat medium therein.

In addition, the heat exchange member 120 may be formed of a heat exchange fin or a heat radiating fin, and thus may have a wide surface area, and may facilitate heat exchange between fluid and air circulated in the heat exchange pipe 110.

In addition, the heat exchange member 120 may dissipate heat to heat the air, or absorb the heat to cool the air.

Figure 4 is a view showing a perspective view of the radioactivity measuring unit of one configuration of the present invention. 5 is a block diagram of a signal processing module of one configuration of the present invention.

Referring to FIG. 4, the radiation measuring unit 200 may include a power supply driving means for applying a voltage between the anode 220 through which electrons move, the cathode 210 through which cations move, the anode 220, and the cathode 210 ( 250) and a signal processing module 260 for generating an output signal using the pulse current generated by the electrons or cations.

More specifically, the alpha particles may be heavy charged particles having an energy of about 5-7 MeV. And the alpha particles can ionize air to produce more than 10 ⁵ electron cation pairs.

In addition, the electrons and cations generated by the alpha particles may be moved to the anode 220 and the cathode 210 by an electric field, respectively, to generate a pulse current, and the signal processing module 260 may use the pulse current to generate radiation concentrations. It can generate an output signal indicating.

The inner region is a region in which gas flows, and may be a space between the cathode 210 and the anode 220. In addition, the internal region may be a region where electrons and cation pairs are generated by alpha particles generated when the radon or the radon daughter nucleus collapses.

In addition, the cathode 210 has a structure for forming an inner region therein, and is formed in a breathable structure to allow air to circulate therein. And cations generated in the inner region may be collected by moving to the cathode (210).

One side of the cathode 210 may be a breathable member 240 formed of a breathable structure so that air is introduced or discharged. In addition, the breathable member 240 may be connected to the cathode 210 and the insulator 230, and the insulator 230 may electrically separate the cathode 210 and the anode 220.

In addition, the breathable member 240 may be implemented as a metal mesh structure or a structure in which holes are formed in the metal or insulator.

In addition, the anode 220 may be fixed by the anode support 221 disposed on the breathable member 240. One end of the anode 220 may be disposed in the inner region, and the other end thereof may be disposed to protrude to the outside.

The anode 220 disposed in the inner region may collect electrons generated in the inner region.

In addition, the protruding portion of the anode 220 may be connected to the signal processing module 260 to transmit the pulse current generated by the electrons to the signal processing module 260.

In addition, the power supply driving unit 250 may apply an electric voltage between the anode 220 and the cathode 210 to form an electric field. In this case, when the intensity of the electric field is increased, a series of ionization phenomena occurs by the electrons, and the radioactivity measuring unit 200 may operate as a proportional counter or a GM counter to collect the amplified signal.

The signal processing module 260 may be connected to the other end of the anode 220 to receive a pulse current signal, and generate an output signal indicating radiation concentration by using the pulse current.

More specifically, the signal processing module 260 may include passive elements such as resistors and capacitors, and active elements such as amplifiers.

When the value of the time constant (R * C), which is the product of the equivalent resistance (R) and the capacitance (C) of the signal processing module 260, is set to be very short than the movement time of the cation and very long than the movement time of the electron, the output from the equivalent resistance The signal being made may depend only on the movement of the electrons.

Therefore, the signal variation time is the same as the movement time of the former so that the signal processing module 260 can operate very quickly.

At this time, the magnitude of the signal output from the equivalent resistance may depend on the position of the electrons generated by the ionization of the alpha particles. Here, the maximum value of the signal magnitude is generated when the electron position is the cathode 210, and as the electron position is closer to the anode 220, the signal size may be smaller.

The signal processing module 260 includes a low level discriminator (LLD) for removing noise below a predetermined minimum signal value from an input signal and an upper level discriminator (ULD) for removing noise above a predetermined maximum signal value from an input signal. It may include.

Here, the input signal may be a signal in which a pulse current is generated through a circuit composed of an equivalent resistance, a capacitance, and an amplifier.

Here, the LLD may be used mainly for the purpose of removing electric noise, beta rays, gamma rays, etc., of which a signal is smaller than that of radon alpha particles, and the ULD may be set to remove background radiation or noise of energy greater than that of radon alpha particles. .

However, the present invention is not limited thereto, and the LLD and the ULD may be provided for the purpose of discriminating background radiation and electrical noise other than radon, radon daughter nuclide, radon and radon daughter nuclide.

In addition, the radiation concentration measured by the radioactivity measuring unit 200 is greatly affected by the temperature, humidity and pressure inside the radioactivity measuring unit 200.

Therefore, the radiation measurement unit 200 may further include an internal environment sensor 270 for measuring the internal temperature, humidity, or pressure of the radiation measurement unit, and an internal temperature control module 280 for adjusting the temperature inside the radiation measurement unit. .

In addition, the internal temperature control module 280 may adjust the temperature inside the radiation measuring unit 200 by setting a reference temperature.

In addition, the internal temperature control module 280 may adjust the humidity by adjusting the temperature inside the radioactivity measuring unit 200.

The signal processing module 260 may compensate for the difference by comparing the temperature, humidity, or pressure measured by the internal environment sensor 270 with a reference value.

For example, when the temperature reference value is 25 ° C, the temperature inside the radioactivity measuring unit 200 measured by the internal environmental sensor 270 is 20 ° C, the density of the air is high, the radiation concentration may be measured high. .

Accordingly, the signal processing module 260 may accurately measure the radioactivity concentration by performing compensation processing corresponding to the difference.

In addition, the internal temperature control module 280 may increase the temperature inside the radioactivity measuring unit 200 to a temperature reference value of 25 ° C.

In addition, the internal temperature control module 280 may be implemented as an ultraviolet light source, an infrared light source or a hot wire.

In addition, a leakage current may be generated between the anode 220 and the cathode 210 by the driving voltage. At this time, the leakage current may join the signal of the anode 220 to generate noise in the output signal.

Therefore, the radiation measuring unit 200 may further include a guard electrode 223 capable of removing the leakage current. The conductive guard electrode 223 formed on the insulator 230 around the anode 220 absorbs leakage current generated between the anode 220 and the cathode 210 and flows it to the ground side to suppress noise generation. Can be.

In addition, the radiation measuring unit 200 may further include an auxiliary electrode 222 on the anode support 221 around the anode 220 in order to remove noise generated from the anode 220 by being attracted from the outside.

The anode 220 and the auxiliary electrode 222 may respectively output a voltage signal by connecting a preamplifier (preamplifier), and the respective preamplifier output signals are inverted and non-inverted by a differential amplifier (not shown). The noise of the anode 220 attracted from the outside can be effectively removed by connecting to the input terminal.

Figure 6 is a view showing a perspective view of a grid-shaped iono embodiment that is an embodiment of the radioactivity measuring unit of one configuration of the present invention.

The radiation measuring unit 200 implemented as a grid-type ionizer may further include a grid electrode 290 disposed between the cathode 210 and the anode 220. In addition, electron and cation pairs may be generated between the cathode 210 and the grid electrode 290, and electrons may pass through the grid electrode 290 and be collected at the anode 220.

In addition, the radiation measuring unit 200 implemented as a grid type ionizer may include a positive power supply driving means 251 and a negative power supply driving means 252.

More specifically, the positive power supply driving means 251 may supply operating power to form an electric field between the positive electrode 220 and the grid electrode 290, and the negative power supply driving means 252 may include the negative electrode 210 and the grid electrode. Operating power may be supplied to form an electric field between 290. In addition, the load resistor may be disposed between the positive power supply driving means 251 and the positive electrode 220.

The potential of the grid electrode 290 may be set to a value between the anode 220 potential and the cathode 210 potential. In addition, the potentials of the cathode power source driving means 252 and the anode power source driving means 251 may be set such that electrons do not collide with the grid electrode 290 to reach the anode 220.

While the cation generated by the ionization of the alpha particles reaches the cathode 210 or the electrons generated by the ionization of the alpha particles reach the grid electrode 290, no signal may be formed in the load resistance.

However, when electrons start to pass through the grid electrode 290, a signal V _R is formed in the load resistance, and the electrons continue to increase until the electrons reach the anode 220 to reach the maximum value and then the time constant Rx. Can be attenuated according to C).

In this case, the distance between the cathode 210 and the grid electrode 290 is because the magnitude of the load signal V _R is proportional to the total amount of electricity generated regardless of the position of the electrons or cations generated by the ionization of the alpha particles. If is greater than the range of the alpha particle (Range), a signal of a substantially constant size can be output.

The amorphousness of an alpha particle may mean the distance that an alpha particle can reach within a substance.

In addition, when the separation distance between the cathode 210 and the grid electrode 290 is greater than the separation distance between the amorphous particles of the alpha particles and the grid electrode 290 and the anode 220, between the cathode 210 and the grid electrode 290 The alpha particles generated in the inner space of the may mainly form a pair of electrons and cations in the space between the cathode 210 and the grid electrode 290.

Therefore, when the separation distance between the cathode 210 and the grid electrode 290 is greater than the separation distance between the amorphous particles of the alpha particles and the grid electrode 290 and the anode 220, the radiation measurement unit 200 more accurately the radiation concentration Can be measured.

On the other hand, when the gas power is generated between the grid electrode 290 and the anode 220 by increasing the anode power driving means 251, the magnitude of the load signal V _R may be amplified.

In the gas ionization detector, when an amplification signal is used, such as a proportional counter or a GM counter, an avalanche is continuously generated inside the detector, and a plasma such as an avalanche decomposes gas molecules or generates highly reactive free radicals. To form or damage the polymer in the electrode.

In particular, since the anode 220 of the proportional counter or the GM counter tube is caused by a thin metal wire around the anode 220, the polymer formed on the metal surface reduces the gain and the Malter effect. As a result, an aging effect such as generating a continuous noise signal such as spontaneous discharge can be caused.

In order to prevent the aging phenomenon, the cathode 220 may be protected by manufacturing the anode 220 or coating the surface of the anode 220 with a material capable of suppressing chemical changes.

It may be desirable for the coating material to have a high melting point, low chemical change and good physical chemistry.

For example, anode 220 may be made of chromium, platinum, gold, titanium, carbon, nickel, stainless steel, iron, silver, copper, beryllium, molybdenum, palladium, tungsten, rhenium, tin, brass, inconel, gallium, and lead. It may be made of or coated with at least one or an alloy thereof.

Figure 7 is a perspective view showing an embodiment of the present invention air control device.

Referring to FIG. 7, the air control device may be implemented in a flat plate type.

In addition, as shown in FIG. 2, the air purifying unit 300 may include the first filter 310, the second filter 320, and the third filter 330 in turn, or as shown in FIG. 7. 310, the second filter 320 and the third filter 330 may be separated from each other.

In the case of FIG. 2, the air introduced into the interior may pass through the radioactivity measuring unit 200 after passing through the first filter 310, the second filter 320, and the third filter 330. In addition, the second filter 320 may reduce the radon concentration. Therefore, the radioactivity measuring unit 200 of FIG. 2 may measure the radioactivity concentration of air in a state where the concentration of radon is reduced.

However, in FIG. 7, the air introduced into the interior may pass through the second filter 320 and the third filter after passing through the first filter 310, the temperature and humidity control unit 100, and the radioactivity measuring unit 200. have. Therefore, the radioactivity measuring unit 200 may measure radiation of air in which radon is not reduced.

Since indoor air passes through the air control device several times and the radon concentration is significantly changed, the structure of FIG. 7 as well as FIG. 2 can also measure the radioactive concentration of the indoor air.

Referring to FIG. 7, air introduced from the outside may pass through the first filter 310 to filter contaminants having large particles, and temperature and humidity may be controlled by the temperature and humidity controller 100.

In addition, the temperature and humidity control unit 100 may include a dehumidification filter for removing moisture and temperature control means for controlling the temperature.

Dehumidification filter may be implemented with a dehumidifying material such as silica gel, zeolite, activated carbon or alumina. And the temperature control means may be implemented as a heat exchange pipe 110 and the heat exchange member 120.

In addition, the air whose temperature and humidity are controlled may be introduced into the radioactivity measuring unit 200 having a flat plate shape and ionized by electrons and cation pairs by alpha particles.

In addition, the air flowing out from the radioactivity measuring unit 200 passes through the second filter 320 and the third filter 330 including the radon reduction means may reduce radon.

The arrangement order of the air purifying unit 300 including the flat temperature and humidity control unit 100, the radioactivity measuring unit 200, and the radon reduction means may be any arrangement order, not limited to the above embodiments.

In addition, the arrangement order of the filters of the air purifier 300 may not be limited.

Air control device 10 according to the present invention may further include a communication unit (not shown) for transmitting and receiving information with the user terminal.

More specifically, the communication unit may transmit at least one of the radiation concentration measured by the radioactivity measuring unit 200 and the environmental information measured by the environmental measuring unit 600 to the user terminal.

In addition, the user may receive the information transmitted by the communication unit through the user terminal to check the radiation concentration or environmental information.

In addition, the user may control the air control apparatus 10 using the user terminal. For example, a target temperature, a target humidity, a target radiation concentration, and a target pollution degree which can be input by the operation unit 700 of the air control device may be input to the user terminal and transmitted to the communication unit.

In addition, the user terminal and the communication unit may communicate with Wi-Fi, Bluetooth, LTE, RFID, WCDMA, HSDPA, EnOcean, Wi-SUN, Zigbee, or infrared rays, but are not limited thereto.

Therefore, the user can operate and control the air control device 10 disposed indoors even if the user is far from the air control device 10 or outside.

While the invention has been shown and described with respect to particular embodiments, it will be appreciated that various changes and modifications can be made in the art without departing from the spirit of the invention provided by the following claims. It will be self-evident for those of ordinary knowledge.

10: air control device 20: outer case
30: air inlet 40: air outlet
50: air intake module 100: temperature and humidity control unit
110: heat exchange pipe 120: heat exchange member
200: radioactivity measuring unit 210: cathode
220: anode 221: anode support
222: auxiliary electrode 223: guard electrode
230: insulator 240: breathable member
250: power supply drive means 251: positive power supply drive means
252: cathode power supply means 260: signal processing module
270: internal environmental sensor 280: internal temperature control module
290: grid electrode 300: air purification unit
310: first filter 320: second filter
330: third filter 400: display unit
500: warning light 600: environmental measurement unit
700: control panel

Claims (12)

An air purifying unit which reduces a concentration of pollutant contained in air introduced into the interior;
A radioactivity measuring unit measuring a radioactivity concentration of radioactive material contained in the air; And
Temperature and humidity control unit for adjusting the temperature and humidity of the air; Radon reduction and indoor air control device capable of measuring radon, including. The method of claim 1,
The indoor air control device
An environmental measuring unit measuring environmental information including at least one of temperature, humidity, and pollution degree of the air;
A display unit displaying at least one of the radiation concentration measured by the radioactivity measuring unit and environmental information measured by the environmental measuring unit; And
A warning light for displaying a warning when the radioactive concentration is higher than or equal to a preset dangerous concentration; Radon reduction and radon measurement possible indoor air control device further comprising a. The method of claim 1,
The indoor air control device
An operation unit receiving an input of at least one of a target temperature, a target humidity, a target radiation concentration, and a target pollution degree; Radon reduction and radon measurement possible indoor air control device further comprises. The method of claim 1,
The indoor air control device
An air intake module that sucks air into the interior;
An air inlet formed in the outer case and into which air is introduced; And
An air outlet through which the introduced air is discharged; Radon reduction and radon measurement possible indoor air control device comprising a. The method of claim 1,
The radioactivity measuring unit
An anode to which electrons move;
A cathode to which cations move;
Power supply means for applying a voltage between the anode and the cathode; And
A signal processing module configured to generate an output signal indicating a radioactivity concentration by using a pulse current generated by the electrons or the cations; Radon reduction and radon measurement possible indoor air control device comprising a. The method of claim 5,
The radioactivity measuring unit
An internal environmental sensor for measuring an internal temperature, humidity, or pressure of the radioactivity measuring unit; And
An internal temperature control module for controlling a temperature inside the radioactivity measuring unit; Include more,
The signal processing module
The indoor air control device capable of radon reduction and radon measurement, characterized in that to compensate for the difference by comparing the temperature, humidity or pressure measured by the internal environmental sensor with a reference value. The method of claim 5,
The radioactivity measuring unit
A guard electrode disposed between the anode and the cathode to remove a leakage current; Radon reduction and radon measurement possible indoor air control device further comprising a. The method of claim 5,
The radioactivity measuring unit
An auxiliary electrode disposed on a side of the anode to remove noise generated from the anode; Radon reduction and radon measurement possible indoor air control device further comprising a. The method of claim 5,
The signal processing module
A low level discriminator (LLD) for removing noise below a predetermined minimum signal value from an input signal; And
An upper level discriminator (ULD) for removing noise exceeding a preset maximum signal value from an input signal; Radon reduction and radon measurement possible indoor air control device comprising a. The method of claim 5,
The anode is
Made of or coated with at least one of chromium, platinum, gold, titanium, carbon, nickel, stainless steel, iron, silver, copper, beryllium, molybdenum, palladium, tungsten, rhenium, tin, brass, inconel, gallium and lead Indoor air controls for radon reduction and radon measurement. The method of claim 5,
The radioactivity measuring unit
A grid electrode disposed between the cathode and the anode; Include more,
Electrons and cations
Is generated between the cathode and the grid electrode,
The former is
Radon reduction and radon measurement indoor room control apparatus, characterized in that collected through the grid electrode at the anode. The method of claim 11,
The radioactivity measuring unit
The separation distance between the cathode and the grid electrode is greater than the separation distance between the alpha particle amorphous and the grid electrode and the anode, radon reduction and radon indoor air control device capable of measuring radon.

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