Radon emissions system for reduction radon emitted from building

Abstract

The present invention relates to a radon exhaust system for reducing radon emitted within a building. By controlling the discharge of air containing radon emitted from the building's indoor space, ceiling space, wall space, and / or floor space to the outside using an air supply and / or exhaust method, it is possible to effectively discharge radon gas generated from concrete or gypsum board used in the building, as well as effectively reduce radon entering the indoor space by discharging air containing radon present in the building's indoor space to the outside.

Description

Technology Field

[0001] The present invention relates to a radon emission system for reducing radon emitted within a building. Background Technology

[0002] Generally, radon (Rn) is a type of naturally occurring radioactive gas that undergoes alpha decay with a half-life of 3.8 days. It is colorless, odorless, and inert, and is mainly introduced into indoor spaces through cracks in the building's foundation or ground. However, it is also generated from uranium decay products contained in cement, soil, and other interior and exterior materials used during construction and is introduced into indoor spaces.

[0003] Since radon becomes a major culprit in causing cancer by killing lung cells when it enters the lungs through the respiratory system, the World Health Organization (WHO) and the U.S. Environmental Protection Agency (USEPA) have classified radon as the second leading cause of lung cancer after smoking and recommend managing radon concentrations in indoor air. Although radon is present in outdoor air and groundwater, exposure through indoor air accounts for the majority, at approximately 95%.

[0004] In other words, because radon is the heaviest gas on Earth, once it enters an indoor space, it does not easily escape and accumulates; when radon enters the lungs through respiration and decays, it emits alpha radiation, which consists of helium atomic nuclei (He 2+ Although it has weaker penetrating power than beta or gamma rays, it has a relatively large mass and causes the destruction of lung cells.

[0005] Meanwhile, radon gas, a major cause of radiation exposure to the general public, continuously travels to the ground through soil or gravel surrounding buildings and penetrates indoors through spaces in the building or pores in the concrete. It is known that radon penetrating from surrounding soil in this way is a major cause of indoor radon, and building materials such as concrete, gypsum board, tiles, gravel, and bricks also become sources of indoor radon contamination.

[0006] In addition, since radon is highly soluble in water, it can enter indoors through the movement of groundwater. This movement through water penetrates due to capillary action through the pores of concrete or water pressure, and the higher the indoor temperature or the lower the indoor pressure, the greater the amount of radon gas that enters the indoors.

[0007] Furthermore, various building materials such as cement and concrete pose a potential risk of spontaneously releasing not only radon gas but also various harmful substances, including volatile organic compounds, inorganic gases, and heavy metals.

[0008] In other words, since concrete, tiles, and gypsum boards used in building construction contain trace amounts of radium, radon gas is generated as the radium within these materials undergoes nuclear fission after construction. Consequently, this generated radon gas cannot be released outdoors and accumulates indoors, frequently causing adverse effects on the health of the people residing in the buildings.

[0009] Therefore, as indicated in numerous prior art documents, including Korean registered patent No. 10-0977707, methods to reduce damage caused by radon gas have recently been developed by applying radon-blocking finishing materials to concrete walls or mixing a barrier agent into concrete to suppress the release of radon gas; however, these methods have been insufficient to effectively prevent damage caused by radon gas emitted from concrete walls, tiles, or gypsum boards.

[0010] Meanwhile, while periodic ventilation by residents is primarily necessary to reduce radon gas entering indoors, there is a problem in that residents suffer serious harm due to exposure to radon gas because proper ventilation is not carried out during the cold winter months or at night. Prior art literature

[0011] Korean Registered Patent No. 10-0977707 (Published on August 25, 2010) The problem to be solved

[0012] The present invention has been devised to solve the aforementioned problems, and the objective of the present invention is to provide a radon exhaust system for reducing radon emitted from within a building, which controls the discharge of radon-containing air emitted from the building's indoor space, ceiling space, wall space, and / or floor space, etc., to the outside using an air supply and / or exhaust method, thereby effectively discharging radon gas generated from concrete or gypsum board used in the building, as well as effectively reducing radon entering the indoor space by discharging radon-containing air present in the building's indoor space to the outside. means of solving the problem

[0013] To achieve the aforementioned objective, one aspect of the present invention is a radon exhaust system for reducing radon emitted within a building having a ceiling space provided in at least one indoor space and a wall space provided in the indoor space so as to communicate with the ceiling space, comprising: a supply air duct installed inside the ceiling space, having a supply air intake unit installed outside at one end to draw in outdoor air, and a supply air exhaust unit installed to communicate with the indoor space at the other end to supply the drawn-in outdoor air into the indoor space; an exhaust duct installed inside the ceiling space, having an exhaust intake unit installed to communicate with the indoor space at one end to draw in indoor air of the indoor space, and an exhaust exhaust port installed outside at the other end to discharge the drawn-in indoor air to the outside; and a ceiling exhaust pipe installed inside the ceiling space and connected to communicate with the exhaust duct and the ceiling space to discharge radon-containing air within the ceiling space and the wall space to the outside through the exhaust duct. The present invention provides a radon exhaust system for reducing radon emitted within a building, characterized by comprising: a variable opening / closing device installed between the ceiling exhaust pipe and the exhaust duct, which selectively opens and closes the exhaust intake portions of the ceiling exhaust pipe and the exhaust duct; a supply air blower provided on the supply air duct, which introduces outdoor air into the interior of the indoor space as supply air; an exhaust air blower provided on the exhaust duct, which discharges indoor air of the indoor space to the outside as exhaust air; and a control device that controls the operation of the variable opening / closing device and controls the operation of at least one of the supply air blower or the exhaust air blower, by partially or entirely closing or opening the ceiling exhaust pipe and partially or entirely opening or closing the exhaust intake portion of the exhaust duct according to a preset ventilation mode, so that indoor air containing radon in the indoor space or air containing radon in the ceiling space and the wall space is discharged to the outside.

[0014] Here, it is preferable that the control device controls the operation of the variable opening / closing device to partially or completely close the ceiling exhaust pipe and partially or completely open the exhaust intake of the exhaust duct according to a preset first ventilation mode so that indoor air containing radon in the indoor space is discharged to the outside, while simultaneously controlling the operation of at least one of the supply air blower or the exhaust blower, and controls the operation of the variable opening / closing device to partially or completely open the ceiling exhaust pipe and partially or completely close the exhaust intake of the exhaust duct according to a preset second ventilation mode so that air containing radon in the ceiling space and the wall space is discharged to the outside, while simultaneously controlling the operation of at least one of the supply air blower or the exhaust blower.

[0015] Preferably, the control device can control the first and second ventilation modes to be performed periodically alternately according to a preset execution cycle.

[0016] Preferably, when the control device performs control in the first ventilation mode, it can control the operation of the variable opening / closing device so that the supply air flowing through the supply fan and the exhaust air flowing through the exhaust fan are simultaneously supplied and exhausted, and at the same time control the operation of the supply fan and the exhaust fan.

[0017] Preferably, when the control device performs control in the second ventilation mode, it can control the operation of the variable opening / closing device so that air containing radon in the ceiling space and the wall space is discharged to the outside, and at the same time control the operation of the exhaust fan.

[0018] Preferably, a user input device that outputs a specific input signal by user operation is further included, wherein the control device can control the operation of the variable opening and closing device to the first or second ventilation mode according to the specific input signal output from the user input device, and at the same time control the operation of at least one of the supply air blower or the exhaust air blower.

[0019] Preferably, the control device can control the operation of the variable opening / closing device so that the air containing radon in the ceiling space and the wall space are simultaneously discharged to the outside along with the indoor air containing radon in the indoor space, by opening the ceiling exhaust pipe to a preset first opening rate and the exhaust intake part of the exhaust duct to a preset second opening rate according to a preset third ventilation mode different from the first and second ventilation modes, and can also control the operation of at least one of the supply air blower or the exhaust blower.

[0020] Preferably, the control device can control the first to third ventilation modes to be performed sequentially or randomly periodically according to a preset execution cycle.

[0021] Preferably, when the control device performs control in the third ventilation mode, it can control the operation of the variable opening / closing device so that the supply air flowing through the supply fan and the exhaust air flowing through the exhaust fan are simultaneously supplied and exhausted, and at the same time control the operation of the supply fan and the exhaust fan.

[0022] Preferably, a user input device that outputs a specific input signal by user operation is further included, wherein the control device can control the operation of the variable opening and closing device to any one of the first to third ventilation modes according to the specific input signal output from the user input device, and at the same time control the operation of at least one of the supply air blower or the exhaust air blower.

[0023] Preferably, the first and second opening rates may be set to be the same or different from each other depending on an external control signal.

[0024] Preferably, the control device further includes a radon detector installed inside the indoor space and measuring the radon concentration within the indoor space, wherein the control device can perform a first control mode in which, when the radon concentration value measured by the radon detector exceeds a preset standard radon concentration value, it closes the ceiling exhaust pipe with priority over the ventilation mode and simultaneously opens the exhaust intake of the exhaust duct to discharge indoor air containing radon within the indoor space to the outside, and simultaneously operates the variable opening / closing device so that the supply air flowing through the supply fan and the exhaust air flowing through the exhaust fan are supplied and exhausted at the same time, and controls the supply fan and the exhaust fan to operate at a preset operating rate for a preset operating time.

[0025] Preferably, the control device may perform a second control mode in which, after performing the first control mode, if the radon concentration value measured by the radon detector is not reduced by a preset average radon concentration reduction rate during a preset reference radon concentration reduction time, the control device operates the variable opening / closing device to open the ceiling exhaust pipe and simultaneously close the exhaust intake of the exhaust duct so that air containing radon in the ceiling space and wall space provided in the indoor space is discharged to the outside, and simultaneously controls at least one of the supply air blower or the exhaust blower to operate at the operating rate during the operating time.

[0026] Preferably, when the control device performs control in the second control mode, it can control the operation of the exhaust fan so that air containing radon in the ceiling space and the wall space is discharged to the outside.

[0027] Preferably, the control device, after performing the second control mode, may perform a third control mode to control the operation of at least one of the supply air blower or the exhaust blower to increase by a preset increase rate from the current operating rate if the radon concentration value measured by the radon detector during the reference radon concentration reduction time is not reduced by the average radon concentration reduction rate, and may sequentially repeat the first to third control modes until the current operating rate of at least one of the supply air blower or the exhaust blower reaches the maximum operating rate.

[0028] Preferably, the control device further includes a radon detector installed inside the indoor space and measuring the radon concentration within the indoor space, wherein the control device, when the radon concentration value measured by the radon detector exceeds a preset reference radon concentration value, closes the ceiling exhaust pipe with priority over the ventilation mode and simultaneously opens the exhaust intake of the exhaust duct to discharge indoor air containing radon within the indoor space to the outside, and simultaneously operates the variable opening / closing device so that the supply air flowing through the supply fan and the exhaust air flowing through the exhaust fan are supplied and exhausted simultaneously, and controls the supply fan and the exhaust fan to operate at a preset operating rate for a preset operating time, and then, if the radon concentration value measured by the radon detector is not reduced by a preset average radon concentration reduction rate during the preset reference radon concentration reduction time, the control device operates the supply fan and the exhaust fan by a preset increased operating rate from their current operating rates. It can perform the 1b control mode that controls.

[0029] Preferably, after performing the first control mode, if the radon concentration value measured by the radon detector during the reference radon concentration reduction time is not reduced by the average radon concentration reduction rate, the control device may repeat the first control mode until the current operating rate of the supply air blower and the exhaust blower reaches the maximum operating rate.

[0030] Preferably, the control device may perform a second control mode in which, when the supply air blower and the exhaust blower are at maximum operating rates, if the radon concentration value measured by the radon detector during the reference radon concentration reduction time is not reduced by the average radon concentration reduction rate, the ceiling exhaust pipe is opened and the exhaust intake part of the exhaust duct is closed so that air containing radon in the ceiling space and wall space provided in the indoor space is discharged to the outside by operating the variable opening / closing device, and at least one of the supply air blower or the exhaust blower is controlled to operate at the operating rate for the operating time, and then perform a second control mode in which, if the radon concentration value measured by the radon detector during the reference radon concentration reduction time is not reduced by the average radon concentration reduction rate, at least one of the supply air blower or the exhaust blower is controlled to operate by the increased operating rate at the current operating rate.

[0031] Preferably, when the control device performs control in the 2a and 2b control modes, it can control the operation of the exhaust fan so that air containing radon in the ceiling space and the wall space is discharged to the outside.

[0032] Preferably, after performing the second control mode, if the radon concentration value measured by the radon detector during the reference radon concentration reduction time is not reduced by the average radon concentration reduction rate, the control device may repeat the second control mode until the current operating rate of at least one of the supply air blower or the exhaust blower reaches the maximum operating rate.

[0033] Preferably, the control device can control the transmission of a preset inspection guidance message for guiding the inspection of the operating status of at least one of the supply air fan or the exhaust fan to a preset administrator terminal via a communication network when, while at least one of the supply air fan or the exhaust fan is in a state where it is operating at maximum rate, the radon concentration value measured by the radon detector during the reference radon concentration reduction time is not reduced by the average radon concentration reduction rate.

[0034] Another aspect of the present invention is a radon exhaust system for reducing radon emitted within a building having a ceiling space provided in at least one indoor space and a wall space provided in the indoor space to communicate with the ceiling space, comprising: a supply air duct installed inside the ceiling space, having a supply air intake unit installed outside at one end to draw in outdoor air, and a supply air exhaust unit installed to communicate with the indoor space at the other end to supply the drawn-in outdoor air into the indoor space; an exhaust duct installed inside the ceiling space, having an exhaust intake unit installed to communicate with the ceiling space to draw in air containing radon within the ceiling space and the wall space at one end, and an exhaust exhaust port installed outside at the other end to discharge the drawn-in air containing radon to the outside; and a supply air blower provided on the supply air duct to introduce outdoor air into the interior of the indoor space as supply air. The present invention provides a radon exhaust system for reducing radon emitted within a building, characterized by comprising: an exhaust fan provided on the exhaust duct and discharging air containing radon within the ceiling space and the wall space as exhaust air to the outside; and a control device that controls the operation of the supply fan and the exhaust fan so that the supply air flowing through the supply fan and the exhaust air flowing through the exhaust fan are simultaneously supplied and exhausted according to a preset ventilation mode.

[0035] Here, a user input device that outputs a specific input signal based on user operation is further included, and the control device preferably controls the operation of the supply air blower and the exhaust air blower in the preset ventilation mode according to the specific input signal output from the user input device.

[0036] Preferably, the control device further includes a radon detector installed inside the indoor space and measuring the radon concentration within the indoor space, wherein the control device can perform a first control mode in which, when the radon concentration value measured by the radon detector exceeds a preset reference radon concentration value, the supply air flowing through the supply fan and the exhaust fan are operated so that the supply air flowing through the supply fan and the exhaust fan are simultaneously supplied and exhausted with priority over the preset ventilation mode, and simultaneously the supply fan and the exhaust fan are controlled to operate at a preset operating rate for a preset operating time.

[0037] Preferably, after performing the first control mode, the control device may perform a second control mode in which, if the radon concentration value measured by the radon detector is not reduced by a preset average radon concentration reduction rate during a preset reference radon concentration reduction time, the supply air blower and the exhaust blower are controlled to operate by a preset increased operating rate from their current operating rates.

[0038] Preferably, after performing the second control mode, if the radon concentration value measured by the radon detector is not reduced by a preset average radon concentration reduction rate during a preset reference radon concentration reduction time, the control device may sequentially repeat the first and second control modes until the current operating rate of the supply air blower and the exhaust blower reaches the maximum operating rate.

[0039] Preferably, the control device can control the transmission of a preset inspection guidance message to a preset administrator terminal via a communication network to provide guidance on checking the operating status of the supply air fan and the exhaust fan when the supply air fan and the exhaust fan are in a state of maximum operating rate and the radon concentration value measured by the radon detector during the reference radon concentration reduction time is not reduced by the average radon concentration reduction rate.

[0040] Preferably, a portion of the exhaust duct is installed to intersect with the supply duct, and is installed inside the ceiling space. A heat exchanger may be further included at the point where the supply duct and the exhaust duct intersect to exchange heat between the supply air flowing by the supply fan and the exhaust air flowing by the exhaust fan.

[0041] Preferably, the building is constructed with a double floor structure in which a floor space of a certain height is formed in a floor slab provided on the floor of the indoor space, and an access floor panel is installed to embed separate wiring or piping, wherein the floor space may be formed to communicate with the wall space.

[0042] Preferably, the building is constructed with a double floor structure in which a floor space of a certain height is formed in a floor slab provided on the floor of the indoor space, and an access floor panel is installed to embed separate wiring or piping, and may further be provided with an air transfer pipe installed between the floor space and the ceiling space, and connected to the exhaust duct so as to communicate with each other so that the internal air of the floor space can move to the exhaust duct.

[0043] Preferably, the building is composed of a multi-unit dwelling consisting of multiple units and floors, wherein at least one ceiling space is provided in at least one indoor space for each unit, and at least one wall space is provided in each indoor space so as to be in communication with each ceiling space, and the supply air duct and the exhaust air duct may be installed respectively inside each ceiling space provided in each indoor space for each unit.

[0044] Preferably, each supply air duct installed inside each ceiling space can be connected as one so as to communicate with one another, and each exhaust duct installed inside each ceiling space can be connected as one so as to communicate with one another. Effects of the invention

[0045] According to the radon exhaust system for reducing radon emitted within a building according to the present invention as described above, by controlling the discharge of air containing radon emitted from the indoor space of the building, as well as from the ceiling space, wall space, and / or floor space, to the outside using an air supply and / or exhaust method, it is possible to effectively discharge radon gas generated from concrete or gypsum board used in the building, as well as effectively reduce radon entering the indoor space by discharging air containing radon present in the indoor space of the building to the outside. Brief explanation of the drawing

[0046] FIG. 1 is a conceptual diagram illustrating, as a first example, the installation state of a radon emission system for reducing radon emitted within a building according to one embodiment of the present invention. FIG. 2 is a conceptual diagram illustrating the installation state of a radon exhaust system for reducing radon emitted within a building according to one embodiment of the present invention as a second example. FIG. 3 is a conceptual diagram illustrating the installation state of a radon exhaust system for reducing radon emitted within a building according to one embodiment of the present invention as a third example. FIG. 4 is a conceptual diagram illustrating the installation state of a radon exhaust system for reducing radon emitted within a building according to one embodiment of the present invention as a fourth example. FIG. 5 is a schematic diagram showing the structure of a heat exchanger applied in one embodiment of the present invention. FIG. 6 is an overall block diagram illustrating a radon emission system for reducing radon emitted within a building according to one embodiment of the present invention. FIG. 7 is a conceptual diagram illustrating the installation state of a radon exhaust system for reducing radon emitted within a building according to another embodiment of the present invention as a first example. FIG. 8 is a conceptual diagram illustrating the installation state of a radon exhaust system for reducing radon emitted within a building according to another embodiment of the present invention as a second example. FIG. 9 is a conceptual diagram illustrating the installation state of a radon exhaust system for reducing radon emitted within a building according to another embodiment of the present invention as a third example. FIG. 10 is a conceptual diagram illustrating the installation state of a radon emission system for reducing radon emitted within a building according to another embodiment of the present invention as a fourth example. FIG. 11 is an overall block diagram illustrating a radon emission system for reducing radon emitted within a building according to another embodiment of the present invention. Specific details for implementing the invention

[0047] The aforementioned objectives, features, and advantages are described in detail below with reference to the attached drawings, and accordingly, a person skilled in the art to which the present invention pertains will be able to easily implement the technical concept of the present invention. In describing the present invention, detailed descriptions of known technologies related to the present invention are omitted if it is determined that such descriptions may unnecessarily obscure the essence of the present invention.

[0048] Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. Such terms are used solely 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 named the second component, and similarly, the second component may be named the first component. The terms used in this application are used merely to describe specific embodiments and are not intended to limit the present invention. A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0049] The terms used in this invention have been selected based on currently widely used general terms, taking into account their functions within the invention; however, these terms may vary depending on the intent of those skilled in the art, case law, the emergence of new technologies, etc. Additionally, in specific cases, terms have been arbitrarily selected by the applicant, and in such cases, their meanings will be described in detail in the relevant description of the invention. Therefore, the terms used in this invention should be defined not merely by their names, but based on their meanings and the overall content of the invention.

[0050] When a part of a specification is described as "including" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. Furthermore, terms such as "...part" or "module" as used in the specification refer to a unit that processes at least one function or operation, and this may be implemented in hardware or software, or as a combination of hardware and software.

[0051] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the embodiments of the present invention exemplified below may be modified in various different forms, and the scope of the present invention is not limited to the embodiments described below. The embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art.

[0052] Combinations of each block of the attached block diagram and each step of the flowchart may be executed by computer program instructions (execution engines), and since these computer program instructions may be loaded into the processor of a general-purpose computer, a special-purpose computer, or other programmable data processing equipment, the instructions executed through the processor of the computer or other programmable data processing equipment create means to perform the functions described in each block of the block diagram or each step of the flowchart. Since these computer program instructions may also be stored in computer-available or computer-readable memory that can be directed toward the computer or other programmable data processing equipment to implement the function in a specific way, the instructions stored in computer-available or computer-readable memory may also produce a manufactured item containing instruction means to perform the function described in each block of the block diagram or each step of the flowchart.

[0053] And, since computer program instructions can be loaded onto a computer or other programmable data processing equipment, instructions that execute a computer or other programmable data processing equipment by performing a series of operation steps on the computer or other programmable data processing equipment to create a process executed on the computer can also provide steps for executing the functions described in each block of the block diagram and each step of the flowchart.

[0054] Additionally, each block or each step may represent a module, segment, or part of code containing one or more executable instructions for executing specific logical functions, and it should be noted that in some alternative embodiments, the functions mentioned in the blocks or steps may occur out of order. For example, two blocks or steps described in succession may actually be performed substantially simultaneously, and the blocks or steps may also be performed in the reverse order of the corresponding functions as needed.

[0055] FIG. 1 is a conceptual diagram illustrating the installation state of a radon exhaust system for reducing radon emitted within a building according to an embodiment of the present invention as a first example; FIG. 2 is a conceptual diagram illustrating the installation state of a radon exhaust system for reducing radon emitted within a building according to an embodiment of the present invention as a second example; FIG. 3 is a conceptual diagram illustrating the installation state of a radon exhaust system for reducing radon emitted within a building according to an embodiment of the present invention as a third example; FIG. 4 is a conceptual diagram illustrating the installation state of a radon exhaust system for reducing radon emitted within a building according to an embodiment of the present invention as a fourth example; FIG. 5 is a schematic diagram showing the structure of a heat exchanger applied to an embodiment of the present invention; and FIG. 6 is an overall block diagram illustrating a radon exhaust system for reducing radon emitted within a building according to an embodiment of the present invention.

[0056] Referring to FIGS. 1 to 6, a radon exhaust system for reducing radon emitted within a building according to one embodiment of the present invention comprises, but is largely composed of an air supply duct (100), an exhaust duct (150), a ceiling exhaust pipe (200), a variable opening / closing device (250), an air supply fan (300), an exhaust fan (350), a control device (450), and a power supply device (500). Additionally, the radon exhaust system for reducing radon emitted within a building according to one embodiment of the present invention may further include a heat exchanger (400), a user input device (550), a radon detector (600), etc. Meanwhile, since the components shown in FIGS. 1 to 6 are not essential, the radon exhaust system for reducing radon emitted within a building according to one embodiment of the present invention may have more or fewer components than those shown.

[0057] Hereinafter, the components of a radon emission system for reducing radon emitted within a building according to one embodiment of the present invention will be examined in detail as follows.

[0058] First, a building (10) (e.g., a building, a commercial building, a detached house, a school, a military base, an apartment, a multi-family house, a row house, a villa, an officetel, etc.) applied to one embodiment of the present invention is typically equipped with at least one indoor space (11) (e.g., a room, an office, a computer room, an electrical room, a fire safety room, a clean room, etc.) as shown in FIGS. 1 to 4, and each indoor space (11) is typically provided with a ceiling space (11a) between a ceiling slab (RS) and a ceiling interior material (RI), and a wall space (11b) is provided between a wall slab (WS) and a wall interior material (WI) so as to be in communication with the ceiling space (11a).

[0059] Additionally, as shown in FIGS. 2 and 3, the building (10) may be constructed as a double floor structure in which a floor space (11c) of a certain height is formed in a floor slab (FS) provided on the floor of each indoor space (11) and an access floor panel (AFP) is installed to embed separate wiring or piping, and it is preferable that the floor space (11c) be formed to communicate with the wall space (11b).

[0060] Here, the Access Floor is constructed to secure a more comfortable and efficient office space in the information age where the use of computers is increasing. It is a so-called double floor finishing method in which a space of a certain height is left above the floor, ranging from about 20 cm to about 50 to 60 cm, and another flooring material is placed on top, with cables such as electrical and communication lines routed between them.

[0061] This access floor is constructed by installing a support (I) on top of the floor concrete that supports a grid-shaped frame, and assembling floor panels that fit the shape of the grid-shaped frame. Since the floor panels can be easily separated and assembled, it has the advantage of allowing various on-site facilities to be easily connected to buried wiring or pipes.

[0062] Additionally, as illustrated in FIG. 3, the building (10) may further be provided with an air transfer pipe (12) installed between the floor space (11c) and the ceiling space (11a), and connected to the exhaust duct (150) so that the internal air of the floor space (11c) can move to the exhaust duct (150). This air transfer pipe (12) may be installed on the wall of each indoor space (11) or embedded inside the wall space (11b).

[0063] Additionally, as shown in FIG. 4, the building (10) may be composed of a multi-unit dwelling (e.g., apartment, multi-family house, row house, villa, officetel, etc.) consisting of multiple units and floors, and each unit is provided with at least one indoor space (11), each indoor space (11) is provided with at least one ceiling space (11a), and each indoor space (11) is provided with at least one wall space (11b) that communicates with each ceiling space (11a).

[0064] At this time, it is preferable that the supply duct (100), exhaust duct (150), ceiling exhaust pipe (200), and variable opening / closing device (250) are each installed inside the ceiling space (11a) provided in each indoor space (11) for each household.

[0065] In addition, it is preferable that each supply air duct (100) installed inside each ceiling space (11a) be connected as one so as to communicate with each other, and it is preferable that each exhaust duct (150) installed inside each ceiling space (11a) be connected as one so as to communicate with each other.

[0066] The air supply duct (100) is installed inside a ceiling space (11a) provided in each indoor space (11) of a building (10), and is provided with an air supply intake part (101) installed outside to draw in outdoor air, and an air supply exhaust part (102) installed to communicate with each indoor space (11) to supply the drawn-in outdoor air into the indoor space.

[0067] The exhaust duct (150) is installed inside the ceiling space (11a) provided in each indoor space (11) of the building (10). One end of the exhaust duct (150) is installed to communicate with each indoor space (11) and is equipped with an exhaust intake part (151) that sucks in indoor air from each indoor space (11), and the other end is installed outdoors and is equipped with an exhaust outlet (152) that discharges the sucked indoor air to the outside. Additionally, a part of the exhaust duct (150) may be installed to intersect with the supply air duct (100).

[0068] The ceiling exhaust pipe (200) is installed inside the ceiling space (11a) provided in each indoor space (11) of the building (10), and is connected to the exhaust duct (150) and the ceiling space (11a) so as to communicate with each other, and performs the function of discharging air containing radon in the ceiling space (11a) and the wall space (11b) and / or floor space (11c) to the outside through the exhaust duct (150).

[0069] The variable opening / closing device (250) is installed inside the ceiling space (11a) provided in each indoor space (11) of the building (10) and is also installed between the ceiling exhaust pipe (200) and the exhaust duct (150), and performs the function of selectively opening and closing the exhaust intake section (151) of the ceiling exhaust pipe (200) and the exhaust duct (150) according to external control, that is, control by the control device (450) described later.

[0070] The variable opening / closing device (250) is preferably implemented as a conventional automatic electric damper capable of controlling the direction, speed, etc. of the air flow circulating through the exhaust intake part (151) of the exhaust duct (150) and / or the ceiling exhaust pipe (200), but is not limited thereto. It may also be composed of an unillustrated communication window capable of partially or entirely opening and / or closing the inlet or passage of the exhaust intake part (151) of the exhaust duct (150) and / or the ceiling exhaust pipe (200), at least one blade installed in a rotatable state in the communication window to open and close the communication window through rotation, and a driving motor or actuator that rotates each blade while operating by a control device (450).

[0071] The supply air blower (300) is provided on the supply air duct (100) and performs the function of introducing outdoor air into each indoor space (11) as supply air under the control of the control device (450).

[0072] The exhaust fan (350) is provided on the exhaust duct (150) and performs the function of discharging indoor air from each indoor space (11) to the outside as exhaust air under the control of the control device (450).

[0073] These supply air blowers (300) and exhaust air blowers (350) are known types whose operation is controlled by a control device (450) and which force air flow by the rotation of blades, thereby enabling the air inside the supply air duct (100) and exhaust air duct (150) to be discharged to the indoor and / or outdoor areas by the rotation of blades.

[0074] That is, it is preferable that the supply air blower (300) and the exhaust air blower (350) include a variable airflow exhaust fan capable of varying the airflow according to the control of the control device (450), rather than a constant speed exhaust fan.

[0075] Meanwhile, the supply air blower (300) and the exhaust air blower (350) are preferably installed on the supply air duct (100) and the exhaust air duct (150) located inside the housing of the heat exchanger (400), that is, the main body casing (405), but are not limited thereto, and may be installed at any location on the supply air duct (100) and the exhaust air duct (150) respectively, by setting an appropriate location to facilitate the supply and exhaust of air.

[0076] The control device (450) performs overall control of a radon exhaust system for reducing radon emitted within a building using a heat exchanger according to one embodiment of the present invention, in particular, by partially and / or entirely closing and / or opening the ceiling exhaust pipe (200) according to a preset ventilation mode and simultaneously partially and / or entirely opening and / or closing the exhaust suction part (151) of the exhaust duct (150), thereby controlling the operation of a variable opening / closing device (250) so that indoor air containing radon in each indoor space (11) or air containing radon in the ceiling space (11a), wall space (11b), and / or floor space (11c) is discharged to the outside, and also performs the function of controlling the operation of at least one of the supply air blower (300) and / or exhaust blower (350).

[0077] Additionally, the control device (450) can perform the function of controlling the operation of the variable opening / closing device (250) so that indoor air containing radon in each indoor space (11) is discharged to the outside by partially and / or completely closing the ceiling exhaust pipe (200) according to the preset first ventilation mode and simultaneously partially and / or completely opening the exhaust intake part (151) of the exhaust duct (150), and at the same time controlling the operation of at least one of the supply air blower (300) and / or exhaust blower (350).

[0078] Additionally, the control device (450) can perform the function of controlling the operation of the variable opening / closing device (250) so that air containing radon in the ceiling space (11a), wall space (11b), and / or floor space (11c) is discharged to the outside by partially and / or completely opening the ceiling exhaust pipe (200) according to the preset second ventilation mode and at the same time partially and / or completely closing the exhaust intake part (151) of the exhaust duct (150), and at the same time controlling the operation of at least one of the supply air blower (300) and / or exhaust blower (350).

[0079] In addition, the control device (450) can perform the function of controlling the first and second ventilation modes to be performed alternately and periodically according to a preset execution cycle.

[0080] Additionally, when the control device (450) performs control in the first ventilation mode, it can control the operation of the variable opening / closing device (250) so that the supply air flowing through the supply air blower (300) and the exhaust air flowing through the exhaust air blower (350) are simultaneously supplied and exhausted, and at the same time, control the operation of the supply air blower (300) and the exhaust air blower (350).

[0081] Additionally, when the control device (450) performs control in the second ventilation mode, it can control the operation of the variable opening / closing device (250) so that air containing radon in the ceiling space (11a), wall space (11b), and / or floor space (11c) is discharged to the outside, and at the same time control the operation of the exhaust fan (350).

[0082] Additionally, the control device (450) can perform the function of controlling the operation of the variable opening / closing device (250) to the first and / or second ventilation mode according to a specific input signal output from the user input device (550), and at the same time controlling the operation of at least one of the supply air blower (300) and / or exhaust air blower (350).

[0083] Additionally, the control device (450) can perform the function of controlling the operation of the variable opening / closing device (250) so that the indoor air containing radon in the indoor space (11) and the air containing radon in the ceiling space (11a), wall space (11b), and / or floor space (11c) are simultaneously discharged to the outside along with the indoor air containing radon in the indoor space (11) by opening the ceiling exhaust pipe (200) to a preset first opening rate and the exhaust suction part (151) of the exhaust duct (150) to a preset second opening rate according to a preset third ventilation mode different from the first and second ventilation modes, and simultaneously controlling the operation of at least one of the supply air blower (300) and / or exhaust blower (350).

[0084] Additionally, the control device (450) can perform the function of controlling the first to third ventilation modes to be performed sequentially and / or randomly periodically according to a preset execution cycle.

[0085] At this time, in the first to third ventilation modes, at least one of the supply air blower (300) and / or the exhaust blower (350) can be operated for a time that is the same or different, with a preset period and a preset operating rate that is the same or different, according to the control of the control device (450). Meanwhile, it is preferable that the first and second opening rates be set to be the same or different according to an external control signal.

[0086] Additionally, when the control device (450) performs control in the third ventilation mode, it can control the operation of the variable opening / closing device (250) so that the supply air flowing through the supply air blower (300) and the exhaust air flowing through the exhaust air blower (350) are simultaneously supplied and exhausted, and at the same time, control the operation of the supply air blower (300) and the exhaust air blower (350).

[0087] Additionally, the control device (450) can perform the function of controlling the operation of the variable opening / closing device (250) to any one of the first to third ventilation modes according to a specific input signal output from the user input device (550), and simultaneously controlling the operation of at least one of the supply air blower (300) and / or exhaust air blower (350).

[0088] Additionally, the control device (450) determines that the radon concentration value measured by the radon detector (600) is a preset reference radon concentration value (e.g., approximately 148 becquerels (Bq / m²)). 3 When the above ventilation mode (i.e., the first to third ventilation modes) is exceeded, the ceiling exhaust pipe (200) is closed with priority over the above ventilation mode (i.e., the first to third ventilation modes), and at the same time, the exhaust intake part (151) of the exhaust duct (150) is opened so that indoor air containing radon in the indoor space (11) is discharged to the outside, and at the same time, the variable opening / closing device (250) is operated so that the supply air flowing by the supply air blower (300) and the exhaust air flowing by the exhaust blower (350) are simultaneously supplied and exhausted, and at the same time, the supply air blower (300) and the exhaust blower (350) are controlled to operate at a preset operating rate for a preset operating time (e.g., about 1 hour or more) to perform a first control mode.

[0089] Additionally, the control device (400) may perform a second control mode in which, after performing the first control mode, if the radon concentration value measured by the radon detector (600) during the preset reference radon concentration reduction time is not reduced by the preset average radon concentration reduction rate (or preset target radon reduction concentration value), the ceiling exhaust pipe (200) is opened and the exhaust suction part (151) of the exhaust duct (150) is closed to discharge the air containing radon in the ceiling space part (11a), wall space part (11b), and / or floor space part (11c) provided in the indoor space (11) to the outside by operating the variable opening / closing device (250), and at the same time, at least one of the supply air blower (300) and / or exhaust blower (350) is controlled to operate at the operating rate during the operating time.

[0090] Additionally, when the control device (450) performs control in the second control mode, it can perform the function of controlling the operation of the exhaust fan (350) so that air containing radon in the ceiling space (11a), wall space (11b), and / or floor space (11c) is discharged to the outside.

[0091] Additionally, the control device (450) may perform a third control mode after performing the second control mode, in which, if the radon concentration value measured by the radon detector (600) during the reference radon concentration reduction time is not reduced by the average radon concentration reduction rate, the control device (450) may perform a third control mode to control the operation of at least one of the supply air blower (300) and / or exhaust air blower (350) to operate by a preset increase rate at the current operating rate, and may sequentially repeat the first to third control modes until the current operating rate of at least one of the supply air blower (300) and / or exhaust air blower (350) reaches the maximum operating rate (e.g., an operating rate of about 100%).

[0092] At this time, it is preferable that the operating rate be set to one of the operating rates in the range of, for example, about 45% to 55% (more preferably, about 50%), and the average radon concentration reduction rate be set to one of the average radon concentration reduction rates in the range of, for example, about 25% to 35% per hour (more preferably, about 30% per hour), and the increase operating rate be set to one of the operating rates in the range of, for example, about 5% to 15% (more preferably, about 10%).

[0093] Additionally, when the radon concentration value measured by the radon detector (600) exceeds a preset standard radon concentration value, the control device (450) closes the ceiling exhaust pipe (200) with priority over the ventilation mode (i.e., the first to third ventilation modes) and simultaneously opens the exhaust suction part (151) of the exhaust duct (150) so that indoor air containing radon in the indoor space (11) is discharged to the outside, and simultaneously operates the variable opening / closing device (250) so that the supply air flowing by the supply air blower (300) and the exhaust air flowing by the exhaust blower (350) are supplied and exhausted at the same time, and controls the supply air blower (300) and the exhaust blower (350) to operate at a preset operating rate for a preset operating time, and then performs a control mode 1a in which the radon concentration value measured by the radon detector (600) during the preset standard radon concentration reduction time is the preset radon concentration If the reduction is not reduced by the average reduction rate, a first-b control mode can be performed to control the supply air blower (300) and the exhaust blower (350) to operate by a preset increase rate from their current operating rates.

[0094] Additionally, after performing the first control mode, if the radon concentration value measured by the radon detector (600) during the reference radon concentration reduction time is not reduced by the average radon concentration reduction rate, the control device (450) may repeat the first control mode until the current operating rate of the supply air blower (300) and the exhaust blower (350) reaches the maximum operating rate.

[0095] Additionally, the control device (450) operates a second control mode in which, when the supply air blower (300) and the exhaust blower (350) are in a state where they are at maximum operating rate, if the radon concentration value measured by the radon detector (600) during the reference radon concentration reduction time is not reduced by the average radon concentration reduction rate, the ceiling exhaust pipe (200) is opened and the exhaust suction part (151) of the exhaust duct (150) is closed so that the air containing radon in the ceiling space part (11a), wall space part (11b), and / or floor space part (11c) provided in the indoor space (11) is discharged to the outside, and at the same time, at least one of the supply air blower (300) and / or the exhaust blower (350) is controlled to operate at the operating rate during the operating time, and then during the reference radon concentration reduction time If the radon concentration value measured by the radon detector (600) is not reduced by the average radon concentration reduction rate, a second control mode (2b) can be performed to control at least one of the supply air blower (300) and / or exhaust blower (350) to operate by the increased operating rate at the current operating rate.

[0096] Additionally, when the control device (450) performs control in the 2a and / or 2b control mode, it can perform the function of controlling the operation of the exhaust fan (350) so that air containing radon in the ceiling space (11a), wall space (11b), and / or floor space (11c) provided in the indoor space (11) is discharged to the outside.

[0097] Additionally, after performing the second control mode, if the radon concentration value measured by the radon detector (600) during the reference radon concentration reduction time is not reduced by the average radon concentration reduction rate, the control device (450) may repeat the second control mode until the current operating rate of at least one of the supply air blower (300) and / or exhaust blower (350) reaches the maximum operating rate.

[0098] Additionally, the control device (450) can perform the function of controlling the transmission of a pre-set inspection guidance message to a pre-set administrator terminal (30) via the communication network (20) to provide guidance on the operation status of at least one of the supply air blower (300) and / or exhaust air blower (350) when at least one of the supply air blower (300) and / or exhaust air blower (350) is in a state where it is operating at maximum rate, and when the radon concentration value measured by the radon detector (600) during the reference radon concentration reduction time is not reduced by the average radon concentration reduction rate.

[0099] At this time, the communication network (20) is a high-speed backbone network of a large communication network capable of providing large-capacity, long-distance voice and data services, and may be a next-generation wireless communication network including WiFi, WiGig, WiBro (Wireless Broadband Internet, Wibro), WiMAX (World Interoperability for Microwave Access, Wimax), etc., for providing Internet or high-speed multimedia services.

[0100] The above-mentioned Internet refers to a global open computer network structure that provides the TCP / IP protocol and various services existing in the upper layer, namely HTTP (Hyper Text Transfer Protocol), Telnet, FTP (File Transfer Protocol), DNS (Domain Name System), SMTP (Simple Mail Transfer Protocol), SNMP (Simple Network Management Protocol), NFS (Network File Service), NIS (Network Information Service), etc., and provides an environment that enables the control device (450) to connect to the administrator terminal (30). Meanwhile, the above-mentioned Internet may be a wired or wireless Internet, and may also be a core network integrated with a wired public network, a wireless mobile communication network, or a mobile Internet.

[0101] If the communication network (20) is a mobile communication network, it may be a synchronous mobile communication network or an asynchronous mobile communication network. As an example of the asynchronous mobile communication network, a WCDMA (Wideband Code Division Multiple Access) type communication network may be cited. In this case, although not shown in the drawing, the mobile communication network may include, for example, an RNC (Radio Network Controller). Meanwhile, although the WCDMA network was given as an example, it may be a next-generation communication network such as a cellular-based 3G network, LTE network, 4G network, 5G network, or other IP-based IP networks. Such a communication network (20) performs the role of mutually transmitting signals and data between the control device (450) and the administrator terminal (30).

[0102] Meanwhile, the administrator terminal (30) applied in one embodiment of the present invention is preferably composed of at least one mobile terminal device among a smartphone, smart pad, or smart note that communicates via wireless internet or mobile internet, and additionally, it may comprehensively refer to all wired / wireless home appliances / communication devices having a user interface for connecting to a communication network (20) and a control device (450), such as a personal PC, notebook PC, Palm PC, mobile game console (Mobile PlayStation), DMB (Digital Multimedia Broadcasting) phone with communication function, tablet PC, and iPad.

[0103] And, the power supply unit (500) performs the function of supplying power to each of the aforementioned components, namely the variable switch (250), the supply air blower (300), the exhaust air blower (350), the control unit (450), the user input unit (550), and / or the radon detector (600), and for continuous power supply, it is preferable to implement a commercial AC power source (e.g., AC 220V) to convert DC and / or AC power sources, but is not limited thereto, and may be implemented by including a conventional portable battery.

[0104] Additionally, the power supply unit (500) may include a power management unit (not shown) that performs the function of protecting components from external power shocks and outputting a constant voltage. The power management unit may include an ESD (Electro Static Damage) protector, a power detector, a rectifier, and a power circuit breaker.

[0105] Here, the ESD protector is configured to protect electrical components from electrostatic discharge or sudden power shocks. The power detector is configured to send a cutoff signal to the power breaker when a voltage outside the allowable voltage range is introduced, and to transmit a step-up or step-down signal to the rectifier according to voltage changes within the allowable voltage range. The rectifier is configured to perform a step-up or step-down rectification operation according to the signal from the power detector to minimize fluctuations in the input voltage and supply a constant voltage. The power breaker is configured to cut off the power supplied from the battery according to the cutoff signal transmitted from the power detector.

[0106] The various embodiments described herein may be implemented, for example, in a recording medium readable by a computer or similar device using software, hardware, or a combination thereof.

[0107] According to hardware implementation, the embodiments described herein may be implemented using at least one of ASICs (application specific integrated circuits), DSPs (digital signal processors), DSPDs (digital signal processing devices), PLDs (programmable logic devices), FPGAs (field programmable gate arrays), processors, controllers, microcontrollers, microprocessors, and electrical units for performing functions. In some cases, such embodiments may be implemented by a control device (450).

[0108] According to the software implementation, embodiments such as procedures or functions may be implemented together with separate software modules that perform at least one function or operation. The software code may be implemented by a software application written in a suitable programming language. Additionally, the software code may be stored in a storage module (not shown) and executed by a control device (450).

[0109] The above storage module may include at least one type of storage medium among, for example, a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (e.g., SD or XD memory, etc.), RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM (Programmable Read-Only Memory), magnetic memory, a magnetic disk, and an optical disk.

[0110] Additionally, the heat exchanger (400) is installed inside the ceiling space (11a) provided in each indoor space (11) of the building (10), and is provided at the point where the supply air duct (100) and the exhaust duct (150) intersect, and performs the function of heat exchange between the supply air flowing by the supply air blower (300) and the exhaust air flowing by the exhaust air blower (350).

[0111] That is, the heat exchanger (400) is a device that exchanges heat between indoor air and outdoor air, exhausts indoor air to the outside, and supplies outdoor air to the inside. As shown in FIG. 5, it may include a main body casing (405) equipped with an indoor intake unit (401) that typically draws air from the inside, an indoor exhaust unit (402) that exhausts air into the inside, an outdoor intake unit (403) that draws air from the outside, and an outdoor exhaust unit (404) that exhausts air to the outside; a heat exchange module (406) composed of heat transfer elements that can mutually exchange heat as the air drawn from the indoor intake unit (401) and the outdoor intake unit (403) passes through; an exhaust fan (350) that can exhaust air toward the outdoor exhaust unit (404); and a supply fan (300) that can exhaust air toward the indoor exhaust unit (402).

[0112] Here, it is preferable that the supply air blower (300) and the exhaust air blower (350) be installed inside the main body casing (405) of the heat exchanger (400), but is not limited thereto. In addition to having separate supply and exhaust air blowers inside the main body casing (405) of the heat exchanger (400), at least one additional supply air blower (300) and exhaust air blower (350) may be installed on the supply air duct (100) and exhaust duct (150) to enable faster supply and exhaust of air.

[0113] The user input device (550) performs the function of outputting a specific input signal by operation of the user. That is, the user input device (550) is a module that outputs a specific key input signal by having at least one key button, and performs the function of outputting a key input signal corresponding to the key input by the user to the control device (450) by having multiple character keys, number keys and various function keys.

[0114] It is preferable that such user input device (550) be implemented including a number of key buttons, but is not limited thereto, and may be composed of, for example, a keyboard, a mouse, etc., and in some cases may be a remote control.

[0115] A radon detector (600) is installed inside an indoor space (11) and performs the function of measuring the radon concentration in the indoor space (11).

[0116] The radon detector (600) is preferably configured to include, for example, a pulsed ionization chamber type radon detector, but is not limited thereto. For example, a surface barrier type, a high-purity semiconductor detector, a scintillation detector, a solid-state junction counter, etc., may be applied as a device for detecting alpha particles.

[0117] That is, the above-mentioned ionization chamber type radon measuring sensor has a structure in which a probe-shaped electrode is installed in the center of a cylindrical metal box, and an electric field is formed by applying a bias voltage between the metal cylinder and the inner probe.

[0118] When alpha particles are emitted due to alpha decay occurring inside the aforementioned ionization chamber, they are annihilated upon collision with air, but an ionic charge is generated; by absorbing this charge through the central probe and amplifying the signal, alpha particles can be detected. The sensor itself consists of a metal cylinder and a probe, making it very inexpensive, durable, and independent of light, which offers the advantage of allowing for good air permeability.

[0119] Regarding the surface barrier type detector mentioned above, a depletion layer, such as a PN junction, is formed on the surface of the semiconductor due to surface levels or oxide films, so the area near the surface acts as an obstacle to charge transport. For practical applications, gold is deposited on the surface of N-type Si to a thickness of approximately 100 µm / cm² to serve as one electrode, and radiation is incident on the back side. Here, the thickness of the depletion layer varies from approximately 50 to 500 µm, and since energy loss at the surface is small, it is mainly used for detecting charged particles generated by alpha radiation and has good energy resolution.

[0120] The aforementioned high-purity semiconductor detector is also generally referred to as a Pure Ge detector. It is a high-purity Ge crystal with very low impurity concentrations or defects, exhibits very high electrical resistance at low temperatures, and can withstand high bias voltages. Unlike Ge(Li), it is easy to maintain as it can be stored at room temperature and only requires cooling with liquid nitrogen for measurement. Furthermore, since its energy resolution is comparable to that of Ge(Li), it is being commercialized.

[0121] Regarding the scintillation detector mentioned above, while the phenomenon of light emission when charged particles strike a material has long been known, the luminescence caused by alpha radiation from zinc sulfide (ZnS) or NaI coatings is particularly strong and can be detected and counted using a magnifying glass in a dark room.

[0122] This type of luminescence is called scintillation, and a material that exhibits this phenomenon is called a scintillator. Furthermore, a scintillator combined with a photomultiplier tube is called a scintillation detector, but a method specifically using pulse output for counting is called a scintillation counter.

[0123] Meanwhile, devices that adopt a method of reading the output DC are primarily used for dose measurement and are called scintillation dosimeters because they use a scintillator; solid, liquid, or gaseous scintillators are used, and if a liquid is used, it is called a liquid scintillation counter.

[0124] The above-described solid junction counter is a counter configured to collect ionic charges from alpha particles passing through the depletion layer as a solid reverse-biased PN junction semiconductor, and can be manufactured as a compact and portable type.

[0125] FIG. 7 is a conceptual diagram illustrating the installation state of a radon exhaust system for reducing radon emitted within a building according to another embodiment of the present invention as a first example, FIG. 8 is a conceptual diagram illustrating the installation state of a radon exhaust system for reducing radon emitted within a building according to another embodiment of the present invention as a second example, FIG. 9 is a conceptual diagram illustrating the installation state of a radon exhaust system for reducing radon emitted within a building according to another embodiment of the present invention as a third example, FIG. 10 is a conceptual diagram illustrating the installation state of a radon exhaust system for reducing radon emitted within a building according to another embodiment of the present invention as a fourth example, and FIG. 11 is an overall block diagram illustrating a radon exhaust system for reducing radon emitted within a building according to another embodiment of the present invention.

[0126] Referring to FIGS. 7 to 11, a radon exhaust system for reducing radon emitted within a building according to another embodiment of the present invention comprises, but is largely composed of an air supply duct (100'), an exhaust duct (200'), an air supply fan (300'), an exhaust fan (400'), a control device (500'), and a power supply device (600'). Additionally, a radon exhaust system for reducing radon emitted within a building according to another embodiment of the present invention may further include a heat exchanger (700'), a user input device (800'), a radon detector (900'), etc. Meanwhile, since the components shown in FIGS. 7 to 11 are not essential, a radon exhaust system for reducing radon emitted within a building according to another embodiment of the present invention may have more or fewer components than those shown.

[0127] Hereinafter, the components of a radon emission system for reducing radon emitted within a building according to another embodiment of the present invention will be examined in detail as follows.

[0128] First, since the building (10) applied in another embodiment of the present invention (e.g., a building, a commercial building, a detached house, a school, a military base, an apartment, a multi-family house, a row house, a villa, an officetel, etc.) is the same as the building (10) applied in the first embodiment of the present invention described above, a detailed description thereof will be made by referring to the first embodiment of the present invention described above.

[0129] The supply air duct (100') is installed inside the ceiling space (11a) provided in each indoor space (11) of the building (10), and is provided with a supply air intake part (110') installed outside to draw in outdoor air, and a supply air exhaust part (120') installed to communicate with each indoor space (11) to supply the drawn-in outdoor air into the indoor space.

[0130] The exhaust duct (200') is installed inside the ceiling space (11a) provided in each indoor space (11) of the building (10). One end of the exhaust duct (200') is installed to communicate with each ceiling space (11a) and is equipped with an exhaust intake section (210') that sucks in air containing radon within each ceiling space (11a) and each wall space (11b). The other end is installed outdoors and is equipped with an exhaust outlet (220') that discharges the sucked air containing radon to the outside. Additionally, a portion of the exhaust duct (200') may be installed to intersect with the supply air duct (100').

[0131] The supply air blower (300') is installed on the supply air duct (100') and performs the function of introducing outdoor air into each indoor space (11) as supply air under the control of the control device (500').

[0132] The exhaust blower (400') is installed on the exhaust duct (200') and performs the function of discharging air containing radon in each ceiling space (11a) and each wall space (11b) to the outside as exhaust air under the control of the control device (500').

[0133] These supply air blowers (300') and exhaust air blowers (400') are known types whose operation is controlled by a control device (500') and which force air flow by the rotation of blades, thereby enabling the air inside the supply air duct (100') and exhaust air duct (200') to be discharged to the indoor and / or outdoor areas by the rotation of blades.

[0134] That is, it is preferable that the supply air blower (300') and the exhaust air blower (400') include a variable airflow exhaust fan capable of varying the airflow according to the control of a control device (500'), rather than a constant speed exhaust fan.

[0135] Meanwhile, the supply air blower (300') and the exhaust air blower (400') are preferably installed on the supply air duct (100) and the exhaust air duct (150) placed inside the housing of the heat exchanger (700'), that is, the main body casing (405) shown in FIG. 5 above, but are not limited thereto, and may be installed at any location on the supply air duct (100) and the exhaust air duct (150) respectively, by setting an appropriate location to facilitate the supply and exhaust of air.

[0136] The control device (500') performs overall control of a radon exhaust system for reducing radon emitted within a building according to another embodiment of the present invention, and in particular, performs the function of controlling the operation of the supply air blower (300') and the exhaust air blower (400') so that the supply air flowing through the supply air blower (300') and the exhaust air flowing through the exhaust air blower (400') are simultaneously supplied and exhausted according to a preset ventilation mode.

[0137] Additionally, the control device (500') can perform the function of controlling the operation of the supply air blower (300') and the exhaust air blower (400') in the preset ventilation mode according to a specific input signal output from the user input device (800'). At this time, the preset ventilation mode can operate the supply air blower (300') and the exhaust air blower (400') for a preset operating time at a preset operating rate.

[0138] Additionally, the control device (500') determines that the radon concentration value measured by the radon detector (900') is a preset reference radon concentration value (e.g., approximately 148 becquerels (Bq / m²)). 3If the above-mentioned pre-set ventilation mode is exceeded, the supply air flowing through the supply air blower (300') and the exhaust air flowing through the exhaust air blower (400') are operated so that the supply air flowing through the supply air blower (300') and the exhaust air flowing through the exhaust air blower (400') are simultaneously supplied and exhausted with priority over the above-mentioned pre-set ventilation mode, and at the same time, the supply air blower (300') and the exhaust air blower (400') are controlled to operate for a pre-set operating time (e.g., about 1 hour or more) at a pre-set operating rate, and a first control mode can be performed.

[0139] At this time, it is preferable that the above-mentioned operating rate be set to one of the operating rates in the range of, for example, about 45% to 55% (more preferably, about 50%).

[0140] Additionally, the control device (500') can perform a second control mode after performing the first control mode, if the radon concentration value measured by the radon detector (900') during the preset reference radon concentration reduction time is not reduced by the preset average radon concentration reduction rate (or preset target radon reduction concentration value), the supply air blower (300') and the exhaust blower (400') can be controlled to operate by a preset increased operating rate from their current operating rates.

[0141] At this time, the above-mentioned average radon concentration reduction rate is preferably set to one of the average radon concentration reduction rates in the range of, for example, about 25% to 35% per hour (more preferably, about 30% per hour), and the above-mentioned increased operating rate is preferably set to one of the operating rates in the range of, for example, about 5% to 15% (more preferably, about 10%).

[0142] Additionally, the control device (500') can control the first and second control modes to be repeated sequentially until the current operating rate of the supply air blower (300') and the exhaust blower (400') reaches the maximum operating rate (e.g., about 100% operating rate) after performing the second control mode, if the radon concentration value measured by the radon detector (900') during the preset reference radon concentration reduction time is not reduced by the preset average radon concentration reduction rate.

[0143] Additionally, the control device (500') can control the transmission of a pre-set inspection guidance message to a pre-set administrator terminal (30) via the communication network (20) to provide guidance on the operation status of the supply air fan (300') and the exhaust air fan (400') when the supply air fan (300') and the exhaust air fan (400') are in a state where they are operating at maximum rate, and when the radon concentration value measured by the radon detector (900') during the standard radon concentration reduction time is not reduced by the average radon concentration reduction rate.

[0144] And, the power supply unit (600') performs the function of supplying power to each of the aforementioned components, namely the supply air blower (300'), exhaust air blower (400'), control unit (500'), user input unit (800'), and / or radon detector (900'), and for continuous power supply, it is preferable to implement a commercial AC power source (e.g., AC 220V) to convert DC and / or AC power sources, but is not limited thereto, and may be implemented by including a conventional portable battery.

[0145] Additionally, the heat exchanger (700') is installed inside the ceiling space (11a) provided in each indoor space (11) of the building (10), and is provided at the point where the supply air duct (100') and the exhaust air duct (200') intersect, and performs the function of heat exchange between the supply air flowing by the supply air blower (300') and the exhaust air flowing by the exhaust air blower (400').

[0146] Since this heat exchanger (700') is identical to the heat exchanger (400) applied in the aforementioned embodiment of the present invention, a detailed description thereof will be made by referring to the aforementioned embodiment of the present invention.

[0147] Since the user input device (800') is identical to the user input device (550) applied in the aforementioned embodiment of the present invention, a detailed description thereof will refer to the aforementioned embodiment of the present invention.

[0148] Since the radon detector (900') is identical to the radon detector (600) applied in the aforementioned embodiment of the present invention, a detailed description thereof will be provided by referring to the aforementioned embodiment of the present invention.

[0149] Although preferred embodiments of a radon emission system for reducing radon emitted within a building according to the present invention have been described above, the present invention is not limited thereto and may be implemented with various modifications within the scope of the claims, the detailed description of the invention, and the attached drawings, and such modifications are also included in the present invention. Explanation of the symbols

[0150] 100 : Supply air duct, 150 : Exhaust duct, 200 : Ceiling exhaust pipe, 250 : Variable switch, 300 : Supply air blower, 350 : Exhaust blower, 400 : Heat exchanger, 450 : Control unit, 500 : Power supply, 550 : User input device, 600 : Radon detector

Claims

Claim 1 A radon exhaust system for reducing radon emitted within a building comprising at least one indoor space, wherein a ceiling space is provided between a ceiling slab and a ceiling interior material of the indoor space, and a wall space is provided between a wall slab and a wall interior material of the indoor space so as to communicate with the ceiling space, the system comprising: a supply air duct installed inside the ceiling space, having a supply air intake unit installed outside at one end to draw in outdoor air, and a supply air exhaust unit installed to communicate with the indoor space at the other end to supply the drawn-in outdoor air into the indoor space; an exhaust duct installed inside the ceiling space, having an exhaust intake unit installed to communicate with the indoor space at one end to draw in indoor air of the indoor space, and an exhaust exhaust port installed outside at the other end to discharge the drawn-in indoor air to the outside; and an exhaust duct installed inside the ceiling space and connected to communicate with the exhaust duct and the ceiling space to discharge air containing radon within the ceiling space and the wall space to the outside through the exhaust duct. A radon exhaust system for reducing radon emitted within a building, characterized by comprising: a ceiling exhaust pipe; a variable opening / closing device installed between the ceiling exhaust pipe and the exhaust duct, which selectively opens and closes the exhaust intake portions of the ceiling exhaust pipe and the exhaust duct; a supply air blower provided on the supply air duct, which introduces outdoor air into the interior of the indoor space as supply air; an exhaust air blower provided on the exhaust duct, which discharges the indoor air of the indoor space to the outside as exhaust air; and a control device that controls the operation of the variable opening / closing device so that, according to a preset ventilation mode, the ceiling exhaust pipe is opened and the exhaust intake portion of the exhaust duct is closed to discharge air containing radon within the ceiling space and the wall space to the outside, and simultaneously controls the operation of the supply air blower and the exhaust air blower so that the supply air flowing through the supply air blower and the exhaust air flowing through the exhaust air blower are supplied and exhausted. Claim 2 A radon exhaust system for reducing radon emitted within a building, wherein, in claim 1, the control device controls the operation of the variable opening / closing device to partially or completely close the ceiling exhaust pipe and partially or completely open the exhaust intake portion of the exhaust duct according to a preset first ventilation mode so that indoor air containing radon in the indoor space is discharged to the outside, and simultaneously controls the operation of at least one of the supply air blower or the exhaust blower, and controls the operation of the variable opening / closing device to partially or completely open the ceiling exhaust pipe and partially or completely close the exhaust intake portion of the exhaust duct according to a preset second ventilation mode so that air containing radon in the ceiling space and the wall space is discharged to the outside, and simultaneously controls the operation of at least one of the supply air blower or the exhaust blower. Claim 3 A radon exhaust system for reducing radon emitted within a building, wherein, in claim 2, the control device controls the first and second ventilation modes to be performed alternately and periodically according to a preset execution cycle. Claim 4 A radon exhaust system for reducing radon emitted within a building, wherein, in claim 2, the control device controls the operation of the variable opening and closing device so that the supply air flowing through the supply fan and the exhaust air flowing through the exhaust fan are simultaneously supplied and exhausted when control is performed in the first ventilation mode. Claim 5 A radon exhaust system for reducing radon emitted within a building, characterized in that, in claim 2, the control device controls the operation of the variable opening / closing device and simultaneously controls the operation of the exhaust fan so that air containing radon within the ceiling space and the wall space is discharged to the outside when control is performed in the second ventilation mode. Claim 6 A radon exhaust system for reducing radon emitted within a building, wherein, in claim 2, a user input device that outputs a specific input signal by user operation is further included, and the control device controls the operation of the variable opening and closing device to the first or second ventilation mode according to the specific input signal output from the user input device, and simultaneously controls the operation of at least one of the supply air blower or the exhaust blower. Claim 7 A radon exhaust system for reducing radon emitted within a building, wherein, in accordance with a preset third ventilation mode different from the first and second ventilation modes, the control device controls the operation of the variable opening / closing device so that the indoor air containing radon in the indoor space and the air containing radon in the ceiling space and the wall space are simultaneously discharged to the outside along with the indoor air containing radon in the indoor space, and simultaneously controls the operation of at least one of the supply air blower or the exhaust blower. Claim 8 A radon exhaust system for reducing radon emitted within a building, wherein, in claim 7, the control device controls the first to third ventilation modes to be performed sequentially or randomly periodically according to a preset execution cycle. Claim 9 A radon exhaust system for reducing radon emitted within a building, wherein, in claim 7, the control device controls the operation of the variable opening / closing device so that the supply air flowing through the supply fan and the exhaust air flowing through the exhaust fan are simultaneously supplied and exhausted when control is performed in the third ventilation mode. Claim 10 A radon exhaust system for reducing radon emitted within a building, wherein, in claim 7, a user input device that outputs a specific input signal by user operation is further included, and the control device controls the operation of the variable opening and closing device to any one of the first to third ventilation modes according to the specific input signal output from the user input device, and simultaneously controls the operation of at least one of the supply air blower or the exhaust blower. Claim 11 A radon emission system for reducing radon emitted within a building, characterized in that, in claim 7, the first and second opening rates are set to be the same or different from each other according to an external control signal. Claim 12 A radon exhaust system for reducing radon emitted within a building, characterized in that, in claim 1, the system further includes a radon detector installed inside the indoor space and measuring the radon concentration within the indoor space, wherein the control device performs a first control mode in which, when the radon concentration value measured by the radon detector exceeds a preset reference radon concentration value, the ceiling exhaust pipe is closed with priority over the ventilation mode and the exhaust intake part of the exhaust duct is opened to discharge indoor air containing radon within the indoor space to the outside, and the variable opening / closing device is operated so that the supply air flowing by the supply fan and the exhaust air flowing by the exhaust fan are simultaneously supplied and exhausted, and the supply fan and the exhaust fan are controlled to operate at a preset operating rate for a preset operating time. Claim 13 A radon exhaust system for reducing radon emitted within a building, characterized in that, in the case where the radon concentration value measured by the radon detector during the preset reference radon concentration reduction time is not reduced by the preset average radon concentration reduction rate after performing the first control mode, the control device operates the variable opening / closing device to open the ceiling exhaust pipe and simultaneously close the exhaust intake part of the exhaust duct so that air containing radon in the ceiling space and wall space provided in the indoor space is discharged to the outside, and simultaneously controls at least one of the supply air blower or the exhaust blower to operate at the operating rate during the operating time. Claim 14 A radon exhaust system for reducing radon emitted from a building, characterized in that, in claim 13, the control device controls the operation of the exhaust fan so that air containing radon within the ceiling space and the wall space is discharged to the outside when control is performed in the second control mode. Claim 15 A radon emission system for reducing radon emitted within a building, characterized in that, in the case where the radon concentration value measured by the radon detector during the reference radon concentration reduction time is not reduced by the average radon concentration reduction rate after performing the second control mode, the control device performs a third control mode to control the operation of at least one of the supply air blower or the exhaust blower to operate by a preset increased operating rate at the current operating rate, and sequentially repeats the first to third control modes until the current operating rate of at least one of the supply air blower or the exhaust blower reaches the maximum operating rate. Claim 16 In claim 1, the control device further includes a radon detector installed inside the indoor space and measuring the radon concentration within the indoor space, wherein the control device, when the radon concentration value measured by the radon detector exceeds a preset reference radon concentration value, closes the ceiling exhaust pipe with priority over the ventilation mode and simultaneously opens the exhaust intake of the exhaust duct to discharge indoor air containing radon within the indoor space to the outside, and simultaneously operates the variable opening / closing device so that the supply air flowing by the supply fan and the exhaust air flowing by the exhaust fan are supplied and exhausted simultaneously, and controls the supply fan and the exhaust fan to operate at a preset operating rate for a preset operating time, and then, if the radon concentration value measured by the radon detector is not reduced by a preset average radon concentration reduction rate during the preset reference radon concentration reduction time, further increases the operating rate by a preset increase rate from the current operating rate of the supply fan and the exhaust fan A radon emission system for reducing radon emitted within a building, characterized by performing a first control mode (1b) that controls operation. Claim 17 A radon emission system for reducing radon emitted within a building, characterized in that, in claim 16, the control device, after performing the firstb control mode, if the radon concentration value measured by the radon detector during the reference radon concentration reduction time is not reduced by the average radon concentration reduction rate, repeats the firstb control mode until the current operating rate of the supply air blower and the exhaust blower reaches the maximum operating rate. Claim 18 In claim 16, the control device is characterized by performing a seconda control mode in which, when the supply air blower and the exhaust blower are in a state of maximum operating rate, if the radon concentration value measured by the radon detector during the reference radon concentration reduction time is not reduced by the average radon concentration reduction rate, the variable opening / closing device is operated to open the ceiling exhaust pipe and simultaneously close the exhaust intake of the exhaust duct so that air containing radon in the ceiling space and wall space provided in the indoor space is discharged to the outside, and simultaneously control at least one of the supply air blower or the exhaust blower to operate at the operating rate for the operating time, and then, if the radon concentration value measured by the radon detector during the reference radon concentration reduction time is not reduced by the average radon concentration reduction rate, the control device is operated to increase the operating rate from the current operating rate of at least one of the supply air blower or the exhaust blower, thereby emitting within a building Radon emission system for reducing radon. Claim 19 A radon exhaust system for reducing radon emitted within a building, characterized in that, in claim 18, the control device controls the operation of the exhaust fan so that air containing radon within the ceiling space and the wall space is discharged to the outside when control is performed in the 2a and 2b control modes. Claim 20 A radon emission system for reducing radon emitted within a building, wherein, in claim 18, the control device, after performing the 2b control mode, if the radon concentration value measured by the radon detector during the reference radon concentration reduction time is not reduced by the average radon concentration reduction rate, repeats the 2b control mode until the current operating rate of at least one of the supply air blower or the exhaust blower reaches the maximum operating rate. Claim 21 A radon exhaust system for reducing radon emitted within a building comprising at least one indoor space, wherein a ceiling space is provided between a ceiling slab and a ceiling interior material of the indoor space, and a wall space is provided between a wall slab and a wall interior material of the indoor space so as to communicate with the ceiling space, the system comprising: a supply air duct installed inside the ceiling space, having a supply air intake unit installed outside at one end to draw in outdoor air, and a supply air exhaust unit installed to communicate with the indoor space at the other end to supply the drawn-in outdoor air into the indoor space; an exhaust duct installed inside the ceiling space, having an exhaust intake unit installed to communicate with the ceiling space at one end to draw in air containing radon within the ceiling space and the wall space, and an exhaust exhaust port installed outside at the other end to discharge the drawn-in air containing radon to the outside; a supply air blower provided on the supply air duct and introducing outdoor air into the interior of the indoor space as supply air; and on the exhaust duct A radon exhaust system for reducing radon emitted within a building, characterized by comprising: an exhaust fan provided for discharging air containing radon within the ceiling space and the wall space as exhaust air to the outside; and a control device that controls the operation of the exhaust fan so that exhaust air flowing through the exhaust fan, including air containing radon within the ceiling space and the wall space, is exhausted to the outside according to a preset ventilation mode, and also controls the operation of the supply fan so that supply air flowing through the supply fan is supplied to the indoor space. Claim 22 A radon exhaust system for reducing radon emitted within a building, wherein, in claim 21, a user input device that outputs a specific input signal by user operation is further included, and the control device controls the operation of the supply air blower and the exhaust air blower in the pre-set ventilation mode according to the specific input signal output from the user input device. Claim 23 A radon exhaust system for reducing radon emitted within a building, wherein, in claim 21, a radon detector installed inside the indoor space and measuring the radon concentration within the indoor space is further included, and the control device performs a first control mode in which, when the radon concentration value measured by the radon detector exceeds a preset reference radon concentration value, the supply air flowing through the supply fan and the exhaust fan are operated so that the supply air flowing through the supply fan and the exhaust fan are simultaneously supplied and exhausted with priority over the preset ventilation mode, and at the same time, the supply fan and the exhaust fan are controlled to operate for a preset operating time at a preset operating rate. Claim 24 A radon emission system for reducing radon emitted within a building, characterized in that, in claim 23, the control device performs a second control mode after performing the first control mode, wherein if the radon concentration value measured by the radon detector during a preset reference radon concentration reduction time is not reduced by a preset average radon concentration reduction rate, the supply air blower and the exhaust blower are controlled to operate by a preset increased operating rate from their current operating rates. Claim 25 A radon emission system for reducing radon emitted within a building, characterized in that, in claim 24, the control device sequentially repeats the first and second control modes until the current operating rate of the supply air blower and the exhaust blower reaches the maximum operating rate, if the radon concentration value measured by the radon detector during the preset reference radon concentration reduction time after performing the second control mode. Claim 26 A radon exhaust system for reducing radon emitted within a building, characterized in that, in claim 1 or 21, a portion of the exhaust duct is installed to intersect with the supply duct, and is installed inside the ceiling space, and further includes a heat exchanger provided at the point where the supply duct and the exhaust duct intersect to exchange heat between the supply air flowing by the supply fan and the exhaust air flowing by the exhaust fan. Claim 27 A radon exhaust system for reducing radon emitted within a building, characterized in that, in claim 1 or 21, the building is formed with a double floor structure in which a floor space of a certain height is formed in a floor slab provided on the floor of the indoor space and an access floor panel is installed to bury separate wiring or piping, wherein the floor space is formed to communicate with the wall space. Claim 28 A radon exhaust system for reducing radon emitted within a building, wherein, in claim 1 or 21, the building is formed with a double floor structure in which a floor space of a certain height is formed in a floor slab provided on the floor of the indoor space and an access floor panel is installed to bury separate wiring or piping, and further provided with an air transfer pipe installed between the floor space and the ceiling space, and connected to the exhaust duct in communication with the floor space so that the internal air of the floor space can move to the exhaust duct. Claim 29 A radon exhaust system for reducing radon emitted within a building, characterized in that, in claim 1 or 21, the building is composed of a multi-unit dwelling consisting of multiple units and floors, wherein at least one ceiling space is provided in at least one indoor space for each unit, and at least one wall space is provided in each indoor space so as to communicate with each ceiling space, and the supply air duct and the exhaust air duct are each installed inside each ceiling space provided in each indoor space for each unit, and the supply air ducts installed inside each ceiling space are connected as one so as to communicate with each other, and the exhaust air ducts installed inside each ceiling space are connected as one so as to communicate with each other.

Images