KR102174463B1 - 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 and at the same time displays radon information of indoor air in real time, and includes an air purification unit including radon reduction means for reducing air pollutants and radon. It is possible to provide an indoor air control device including a function of reducing radon and measuring radon, including a radioactivity measuring unit measuring radon radiation and a temperature and humidity adjusting unit adjusting temperature and humidity of air.

Description

Indoor air control device capable of reducing radon and measuring radon {INDOOR AIR CONTROL UNIT INCLUDING FUNCTIONS FOR RADON REDUCTION AND RADON MEASUREMENT}

The present invention relates to an indoor air control apparatus, and more particularly, to an indoor air control apparatus including a radon reduction and 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 everywhere 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 Contains as enemies.

In addition, radon ( ²²² Rn) repeats the extinction process by releasing alpha particles (alpha rays) with a half-life of 3.8 days. And the daughter nuclides of radon ( ²¹⁸ Po, ²¹⁴ Pb, ²¹⁴ Bi, ²¹⁴ Po) also have the property of emitting alpha particles with a short half-life. In addition, it was found that when radon gas and radon's daughter nuclides are exposed to the human body for a long time through breathing, they cause internal exposure and cause lung cancer.

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

On the other hand, since the daughter nuclides of radon are charged, they are easy to form aerosols or adsorb to the surface of substances by adhering to dust, water vapor, and cigarette smoke in the air. Therefore, when a person inhales or directly inhales radon daughter nuclides in the form of an aerosol through breathing, the lungs adsorb them and are exposed to alpha particles for a long time. Therefore, radon or radon daughter nuclides are the main causes of lung cancer.

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

In addition, radon is colorless, tasteless, and odorless, so it cannot be detected even if a person inhales radon gas. Therefore, there is a need for a way to minimize the exposure of radon in real life, and radon measurement and radon management techniques are very urgent.

Today, people live most of their lives indoors, so the need for technology to reduce indoor radon and radon daughter nuclides is expanding. In particular, the more difficult ventilation or closed space, the higher the concentration of radon and radon daughter nuclides, which increases the risk. Therefore, the need for indoor radon reduction technology is spreading along with raising awareness of the health risks of radon.

Currently, a method of reducing radon is mainly proposed by using an activated carbon filter in an air purifier. High-purity activated carbon has very developed microscopic pores, and radon adsorbed in the pores cannot escape until it reaches a certain concentration, so it has the effect of reducing radon in the air.

However, there is no case of applying a means for reducing radon such as an activated carbon filter to heaters, air conditioners, dehumidifiers or humidifiers used in winter or summer. In fact, the more difficult the indoor ventilation season, the higher the concentration of radon in the room, so that a means for reducing radon is more required for indoor air control devices such as heaters, air conditioners, dehumidifiers or humidifiers.

Methods of measuring radon include ionization, luminescence, and tricks according to the principle of interaction between the alpha particles emitted from radon and the measurement medium. In addition, detectors that measure radon concentration in real time include a pulsed ion chamber, a scintillation cell, and a silicon semiconductor.

The scintillator detector measures radon in the air by applying a scintillator material such as ZnS(Ag) sensitive to heavy-charged particles on the inner wall of a darkroom container, and then introducing air into the container using a pump. Alpha particles emitted from radon cause light emission by excitation with ZnS(Ag) to emit light. In addition, the photomultiplier tube converts this light into an electrical pulse signal and counts alpha particles.

The scintillator detector has a high sensitivity, but the ZnS(Ag) scintillator material is vulnerable to environments such as moisture, and there is a problem in that an expensive photomultiplier tube must be used.

Meanwhile, the silicon semiconductor detector locates the silicon semiconductor detector in the center of the container made of a dark room. Then, a high voltage is applied between the container wall and the detector to form an electric field, and then the alpha particles emitted from the radon introduced into the container collide with the detector surface to continuously measure the radon concentration. Semiconductor detectors are strong against external environments such as vibration and humidity, but radon is measured only when alpha particles collide with the detector surface in two dimensions. Therefore, a relatively small semiconductor detector has very low sensitivity, and a detector with a large surface area is very expensive.

The pulsed ionizer is composed of an external electrode and an internal collecting electrode of a breathable structure through which air flows well. In addition, in the pulsed ionizer, a high voltage is applied between the external electrode and the collecting electrode to form an electric field inside the ionizer.

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

Pulse-type ionizers have the advantage of having high sensitivity and low cost, although the measurement signal is very weak, at the level of several tens of fC, so attention must be paid to the signal processing circuit and vulnerable to leakage current.

Republic of Korea Patent Publication No. 10-2018-0066393 (published on June 19, 2018) “Radon detection system and detection method using an image sensor module with digital output” Republic of Korea Patent Publication No. 10-1843515 (registered on March 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 virtual sensors”

Accordingly, an object of the present invention for solving this problem is to provide an indoor air control device capable of measuring and displaying the radon concentration in the room in real time and reducing the radon concentration.

In order to achieve the above object, an indoor air control device capable of reducing radon and measuring radon according to the present invention includes an air purification unit that reduces the concentration of pollutants contained in the air introduced into the interior, and the radioactive concentration of radioactive substances contained in the air It includes a radiation measurement unit for measuring and a temperature and humidity control unit for adjusting the temperature and humidity of the air.

In addition, the indoor air control device is an environment measuring unit that measures environmental information including at least one of temperature, humidity, and pollution degree of the air, the radioactivity concentration measured by the radioactivity measuring unit and the environment measured by the environmental measuring unit. A display unit for displaying at least one of the information, and a warning light for displaying a warning when the radiation concentration is higher than a preset dangerous concentration may be further included.

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

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

The radioactivity measurement unit generates an output signal representing the radioactivity concentration using a positive electrode to which electrons move, a negative electrode to which positive ions move, a power supply driving means for applying a voltage between the positive and negative electrodes, and a pulse current generated by the electrons or the positive ions. It may include a signal processing module to generate.

The radiation measurement unit further includes an internal environment sensor for measuring the internal temperature, humidity, or pressure of the radiation measurement unit and an internal temperature control module for adjusting the temperature inside the radiation measurement unit, wherein the signal processing module is in the internal environment sensor It may be characterized in that the measured temperature, humidity, or pressure is compared with a reference value to compensate for the difference.

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

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

The signal processing module includes an LLD (Low Level Discriminator) that removes noise less than a preset minimum signal value from the input signal and an ULD (Upper Level Discriminator) that removes noise exceeding a preset maximum signal value from the input signal. can do.

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. I can.

The radioactivity measurement unit further includes 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 pass through the grid electrode and may be collected at the anode.

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

According to the indoor air control apparatus capable of reducing radon and measuring radon according to the present invention described above, there is an effect of controlling the indoor temperature and humidity, 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 according to 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 according to an embodiment of the present invention.
3 is a view showing an embodiment of a temperature and humidity control unit that is a component of the present invention.
Figure 4 is a view showing a perspective view of a radioactivity measuring unit that is one configuration of the present invention.
5 is a diagram showing a block diagram of a signal processing module, which is a component of the present invention.
6 is a diagram showing a perspective view of a grid-type ionizer, which is an embodiment of a radiation measuring unit, which is a component of the present invention.
7 is a diagram showing a perspective view of a flat plate type ionizer, which is an embodiment of a radioactivity measuring unit, which is a component of the present invention.

Terms and words used in this specification and claims are not limited to the usual or dictionary meanings, and the inventor is based on the principle that the concept of terms can be appropriately defined in order to describe the user's invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention.

Throughout the specification, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components unless otherwise stated. In addition, “… Wealth”, “… Ki”, “… However, terms such as "," "module", and "device" mean a unit that processes at least one function or operation, which may be implemented by a combination of hardware and/or software.

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

In addition, in an embodiment of the present invention, a singular expression includes a plurality of expressions unless the context clearly indicates otherwise.

In addition, in the embodiments of the present invention, terms such as "include" or "have" are intended to designate the existence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification. It is to be understood that the possibility of the presence or addition of other features, numbers, steps, actions, components, parts, or combinations thereof, or further other features, is not 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 according to an embodiment of the present invention. In addition, FIG. 2 is a cross-sectional view of an indoor air control device capable of reducing radon and measuring radon according to an embodiment of the present invention.

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

In addition, referring to FIG. 2, the air control device 10 of the present invention has an air intake module 50, a temperature and humidity control unit 100, a radiation measurement unit 200, an air purification unit 300, and an environment measurement unit. It may include 600.

More specifically, the air intake module 50 may be implemented as a motor fan or a pump, and may suck external 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 external air may be introduced into the interior. In addition, the air outlet 40 may discharge air introduced into the interior to the outside. Accordingly, air can circulate inside the air control device as indicated by the arrow in the drawing.

In addition, the air purification unit 300 may reduce the concentration of contaminants such as fine dust, hair, pollen, radon or radon daughter nuclides included in the air introduced into the interior.

More specifically, the air purification unit 300 may include a first filter 310, a second filter 320, and a third filter 330, and can filter contaminants by passing air through each filter. have.

Further, the first filter 310 is a filter that filters the largest particles, and can filter contaminants such as dust, hair, and pollen having large particles contained in the air.

In addition, the second filter 320 may remove contaminants having a fine size from air in which large particles have been filtered through the first filter 310. In particular, the second filter 320 may reduce the concentration of radon and radon daughter nuclides.

In addition, the second filter 320 may be implemented as an activated carbon filter. Here, since activated carbon is porous and has a large surface area and strong adsorption, radon and radon daughter nuclides can be effectively removed.

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

However, the second filter 320 is not implemented as being limited to an activated carbon filter, and may be implemented with various types of filters such as nanoparticle-type adsorbent, impregnated activated carbon, powder activated carbon, granular activated carbon, and water vapor.

In addition, the third filter 330 is a filter that filters the smallest particles, and can remove ultrafine dust, yellow sand, bacteria, mold, cigarette smoke, etc. in the air.

In addition, the air purification unit 300 may include various functional filters such as a deodorization filter and a sterilization filter in addition to the first filter 310, the second filter 320, and the third filter 330.

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.

In addition, the radioactivity measurement unit 200 may measure the radioactivity concentration of radioactive materials contained in air.

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

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

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

Alpha particles generated by the collapse of radon can separate air into electrons and cations.

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

And the radiation measurement unit 200 is a gas-type detector ion chamber, grid-type ion chamber (Gridded Ion Chamber, or Frisch-Grid Ion Chamber), GM counter (Geiger Muller Counter), and any of the proportional counter (Proportional Counter). It can be implemented as one.

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

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

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

The temperature-humidity controller 100 may control temperature by cooling or heating air, or controlling humidity by dehumidifying or humidifying.

More specifically, the temperature and humidity control unit 100 may be implemented as a heat exchanger that adjusts temperature, and may exchange heat by circulating 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 porous material excellent in absorbing moisture, such as silica gel, alumina gel, and molecular sieve ( molecular sieves), 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 a passive control means such as a dehumidification filter, a dehumidification rotor, and a phase change material. Can be.

In addition, the temperature and humidity control unit 100 may be implemented in various shapes such as a circular shape or a flat plate shape.

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

In addition, the display unit 400 may be formed on the outer case 20 of the air control device and disposed so that a user can check it.

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

In addition, the manipulation unit 700 may receive an input of a target temperature, a target humidity, a target radioactivity concentration, or a target contamination level. In addition, the operation unit 700 may be formed on the outer case 20 and may be implemented as a button so that the user can easily input it.

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

In addition, the air intake module 50 may control the operation speed and operation time of the motor or pump so as to reach a target radioactivity concentration or a target pollution level received from the operation unit 700.

3 is a view showing a heat exchanger that is an embodiment of the temperature and humidity control unit 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 implemented as a heat exchange fin or a radiating fin to have a large surface area, and facilitate heat exchange between the fluid and air circulated in the heat exchange pipe 110.

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

Figure 4 is a view showing a perspective view of a radioactivity measuring unit that is one configuration of the present invention. In addition, FIG. 5 is a block diagram of a signal processing module, which is a component of the present invention.

Referring to FIG. 4, the radiation measurement unit 200 includes a power driving means for applying a voltage between the anode 220 to which electrons move, the cathode 210 to which cations move, the anode 220 and the cathode 210 ( 250) and a signal processing module 260 that generates an output signal using a pulse current generated by electrons or positive ions.

More specifically, the alpha particle may be a medium charged particle having an energy of about 5 to 7 MeV. And alpha particles can generate 10 ⁵ or more pairs of electron cation by ionizing air.

In addition, electrons and positive ions generated by the alpha particles may move to the anode 220 and the cathode 210 respectively by an electric field to generate a pulsed current, and the signal processing module 260 uses a pulsed current to generate a radioactive concentration. Can generate an output signal representing

The inner region is a region through which gas flows, and may be a space between the cathode 210 and the anode 220. In addition, the inner region may be a region in which electron and cation pairs are generated by alpha particles generated when radon or radon daughter nuclides are decayed.

In addition, the cathode 210 has a structure in which an inner region is formed therein, and is formed in a breathable structure to allow air to circulate therein. In addition, cations generated in the inner region may move to the cathode 210 and be collected.

A breathable member 240 formed in a breathable structure may be disposed on one side of the cathode 210 so that air is introduced or discharged. In addition, the breathable member 240 may be connected to the negative electrode 210 and the insulator 230, and the insulator 230 may electrically separate the negative electrode 210 and the positive electrode 220.

In addition, the breathable member 240 may be implemented in a structure in which a hole is formed in a metal or an insulator or a metal mesh structure.

In addition, the anode 220 may be fixed by the anode support 221 disposed on the breathable member 240. In addition, one end of the anode 220 may be disposed in the inner region, and the other end 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 a pulse current generated by electrons to the signal processing module 260.

In addition, the power driving means 250 may apply a voltage between the anode 220 and the cathode 210 to form an electric field. Here, when the strength of the electric field increases, a chain ionization phenomenon occurs due to electrons, and the radioactivity measurement unit 200 operates as a proportional coefficient tube or a GM coefficient tube to collect amplified signals.

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

If 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 much shorter than the movement time of positive ions and much longer than the movement time of electrons, the equivalent resistance is output. The signal to be obtained can only depend on the movement of electrons.

Accordingly, since the fluctuation time of the signal is the same as the movement time of the former, the signal processing module 260 can operate very quickly.

In this case, the magnitude of the signal output from the equivalent resistance may depend on the position of electrons generated by the ionization of the alpha particle. Here, the maximum value of the signal level is generated when the electron position is the cathode 210, and the signal level may decrease as the electron position approaches the anode 220.

The signal processing module 260 includes an LLD (Low Level Discriminator) that removes noise less than a preset minimum signal value from an input signal and an ULD (Upper Level Discriminator) that removes noise exceeding a preset maximum signal value from an input signal. It may include.

Here, the input signal may be a signal generated by a pulse current passing through a circuit consisting of an equivalent resistance, a capacitance, and an amplifier.

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

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

In addition, the radioactivity concentration measured by the radioactivity measurement unit 200 is greatly influenced by temperature, humidity, and pressure inside the radioactivity measurement unit 200.

Accordingly, the radiation measurement unit 200 may further include an internal environment sensor 270 that measures the internal temperature, humidity, or pressure of the radiation measurement unit, and an internal temperature control module 280 that controls the temperature inside the radiation measurement unit. .

In addition, the internal temperature control module 280 may set a reference temperature and adjust the temperature inside the radiation measurement unit 200 accordingly.

In addition, the internal temperature control module 280 may control humidity by adjusting the temperature inside the radiation measurement unit 200.

The signal processing module 260 may compensate for a 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, and the temperature inside the radiation measuring unit 200 measured by the internal environmental sensor 270 is 20°C, the density of air increases, so that the radioactivity concentration may be measured high. .

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

In addition, the internal temperature control module 280 may increase the temperature inside the radiation measurement unit 200 to 25°C, which is a temperature reference value.

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

In addition, a leakage current may be generated between the anode 220 and the cathode 210 due to a 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 measurement unit 200 may further include a guard electrode 223 capable of removing a leakage current. The conductive guard electrode 223 formed on the insulator 230 around the anode 220 absorbs the leakage current generated between the anode 220 and the cathode 210 and flows it to the ground side, thereby suppressing the generation of noise. I can.

In addition, the radiation measurement unit 200 may further include an auxiliary electrode 222 in 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 each connect a preamplifier (preamplifier) to output a voltage signal, and each of the preamplifier output signals is inverted and non-inverted by a differential amplifier (not shown). By connecting to the input terminal, noise of the anode 220 induced from the outside can be effectively removed.

6 is a diagram showing a perspective view of a grid-type ionizer, which is an embodiment of a radiation measurement unit, which is a component 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, an electron and cation pair 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 measurement unit 200 implemented as a grid-type ionizer may include a positive power driving means 251 and a negative power driving means 252.

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

The potential of the grid electrode 290 may be set to a value between the potential of the anode 220 and the potential of the cathode 210. Further, the potentials of the negative power driving means 252 and the positive power driving means 251 may be set such that electrons pass through without colliding with the grid electrode 290 and reach the positive electrode 220.

While the positive ions generated by the ionization of the alpha particles reach the cathode 210 or while 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 begin to pass through the grid electrode 290, a signal V _R begins to be formed in the load resistance, and continues to increase until the electrons reach the anode 220, reaching the maximum value, and then the time constant (Rx It can be attenuated according to C).

In this case, the size of the load signal (V _R ) is independent of the position of electrons or cations generated by the ionization of alpha particles and is proportional to the total amount of electricity generated, so the separation distance between the cathode 210 and the grid electrode 290 When is sufficiently larger than the range of the alpha particle, a signal having an almost constant size may be output.

The non-crystallization of the alpha particle may mean the distance that the alpha particle can reach within a substance.

In addition, when the separation distance between the cathode 210 and the grid electrode 290 is formed larger than the amorphous of the alpha particles and the separation distance between the grid electrode 290 and the anode 220, the cathode 210 and the grid electrode 290 Alpha particles generated in the inner space of may mainly form electron and cation pairs 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 formed larger than the irregularity of the alpha particles and the separation distance between the grid electrode 290 and the anode 220, the radioactivity measurement unit 200 more accurately Can be measured.

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

Among gas ionizing detectors, when amplified signals such as a proportional counter or GM counter are used, an electron avalanche occurs continuously inside the detector, and a plasma such as an electron avalanche decomposes gas molecules or free radicals with high reactivity. Formed to create or damage the polymer in the electrode.

In particular, since the anode 220 of the proportional coefficient tube or the GM counter tube generates an electron avalanche around the anode 220 in the form of a thin metal wire, the polymer formed on the metal surface reduces the gain and prevents the Malter effect. Accordingly, an aging effect such as generating a continuous noise signal such as spontaneous discharge may be caused.

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

The coating material has a high melting point, is not subject to chemical change, and a material that is resistant to physical and chemical reactions may be desirable.

For example, the anode 220 is among 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.

7 is a perspective view showing an embodiment of the present inventors 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, in the air purifying unit 300, the first filter 310, the second filter 320, and the third filter 330 may be sequentially disposed together, as shown in FIG. 7. 310), the second filter 320, and the third filter 330 may be disposed separately.

In the case of FIG. 2, the air introduced into the interior may pass through the first filter 310, the second filter 320, and the third filter 330 and then pass through the radiation measurement unit 200. In addition, the second filter 320 may reduce the radon concentration. Accordingly, the radioactivity measurement unit 200 of FIG. 2 may measure the radioactivity concentration of air in a state in which the concentration of radon is reduced.

However, in the case of 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 radiation measurement unit 200. have. Accordingly, the radiation measuring unit 200 may measure radiation of air in which radon is not reduced.

Since the radon concentration significantly changes when the indoor air passes through the air control device several times, it is possible to measure the radioactive concentration of indoor air as well as the structure of FIG. 7.

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

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

The dehumidifying 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 with a heat exchange pipe 110 and a heat exchange member 120.

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

In addition, the air leaked from the radioactivity measurement unit 200 passes through the second filter 320 and the third filter 330 including radon reduction means, so that radon may be reduced.

The arrangement order of the flat plate-type temperature and humidity control unit 100, the radiation measurement unit 200, and the air purification unit 300 including radon reduction means is not limited to the above embodiment, and any arrangement order may be used.

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

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

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

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

And the user can control the air control device 10 using the user terminal. For example, a target temperature, a target humidity, a target radioactivity concentration, and a target pollution degree that can be input by the control 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, but are not limited thereto.

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

Although the present invention has been illustrated and described with reference to specific embodiments, it is understood in the art that the present invention can be variously improved and changed within the scope of the technical spirit of the present invention provided by the following claims. It will be obvious to a person of ordinary knowledge.

10: air control unit 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 measurement 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 drive means
252: negative power supply driving means 260: signal processing module
270: internal environment 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 purification unit for reducing the concentration of pollutants contained in the air introduced into the interior;
A radioactivity measuring unit for measuring the radioactivity concentration of radioactive material contained in the air; And
A temperature-humidity control unit that adjusts the temperature and humidity of the air; Including,
The radioactivity measurement unit
An anode through which electrons move;
A cathode through which cations move;
An auxiliary electrode disposed on a side of the anode to remove noise generated from the anode;
Power driving means for applying a voltage between the anode and the cathode; And
A signal processing module that generates an output signal representing a radioactivity concentration by using the pulsed current generated by the electrons or the positive ions; Indoor air control device capable of reducing radon and measuring radon, comprising a. The method of claim 1,
The indoor air control device
An environment measuring unit that measures environmental information including at least one of temperature, humidity, and pollution degree of the air;
A display unit that displays at least one of the radioactivity concentration measured by the radioactivity measurement unit and environmental information measured by the environment measurement unit; And
A warning light for displaying a warning when the radioactivity concentration is higher than a preset dangerous concentration; Indoor air control device capable of reducing radon and measuring radon, characterized in that it further comprises. The method of claim 1,
The indoor air control device
A manipulation unit that receives input of at least one of a target temperature, a target humidity, a target radiation concentration, and a target pollution degree; Indoor air control device capable of reducing radon and measuring radon, characterized in that it further comprises. The method of claim 1,
The indoor air control device
An air intake module for inhaling air into the interior;
An air inlet formed in the outer case through which air is introduced; And
An air outlet through which the introduced air is discharged; Indoor air control device capable of reducing radon and measuring radon, comprising a. delete The method of claim 1,
The radioactivity measurement unit
An internal environment sensor measuring an internal temperature, humidity, or pressure of the radiation measuring unit; And
An internal temperature control module for adjusting the temperature inside the radiation measurement unit; Including more,
The signal processing module
Indoor air control device capable of reducing radon and measuring radon, characterized in that compensating for a difference by comparing the temperature, humidity, or pressure measured by the internal environmental sensor with a reference value. The method of claim 1,
The radioactivity measurement unit
A guard electrode disposed between the anode and the cathode to remove leakage current; Indoor air control device capable of reducing radon and measuring radon, characterized in that it further comprises.
delete The method of claim 1,
The signal processing module
LLD (Low Level Discriminator) for removing noise less than a preset minimum signal value from the input signal; And
ULD (Upper Level Discriminator) for removing noise exceeding a preset maximum signal value from the input signal; Indoor air control device capable of reducing radon and measuring radon, comprising a. The method of claim 1,
The anode is
It is composed 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 control device capable of reducing radon and measuring radon. The method of claim 1,
The radioactivity measurement unit
A grid electrode disposed between the cathode and the anode; Including more,
Electrons and cations are
Is generated between the cathode and the grid electrode,
The former is
Indoor air control device capable of reducing radon and measuring radon, characterized in that collected at the anode through the grid electrode. The method of claim 11,
The radioactivity measurement unit
Indoor air control device capable of reducing radon and measuring radon, characterized in that the separation distance between the cathode and the grid electrode is formed larger than the amorphous distance between the alpha particle and the grid electrode and the anode.

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