KR102362881B1 - System and method for automatically controllng radon pan - Google Patents

Abstract

A radon fan automatic control system and method are disclosed.
A radon fan automatic control system according to an embodiment of the present invention is installed on a pipe with one end buried in the ground outside of a building to discharge soil air containing radon to the atmosphere, and measures the radon concentration present in the indoor space Receives the radon concentration measured by the radon detector from the radon detector, a wireless repeater that connects wireless communication between devices, and the wireless repeater. and a control terminal for adjusting the output level of the radon fan by applying a signal.

Description

SYSTEM AND METHOD FOR AUTOMATICALLY CONTROLLNG RADON PAN

The present invention relates to an automatic radon fan control system and method, and more particularly, to a radon fan automatic control system and method for effectively reducing radon, an indoor air pollutant and a first-class carcinogen, in a residential space. .

In general, radon is a naturally occurring radioactive material such as uranium and radium, and since it can cause lung cancer when a person is continuously exposed to radon in an indoor space, various studies are being conducted to reduce indoor radon.

The World Health Organization and the U.S. Environmental Protection Agency have regulated radon as a class 1 carcinogen. is establishing On the other hand, in Korea, radon management standards and countermeasures for multi-use facilities such as schools and barracks are established, but indoor radon management for residential spaces is insufficient.

Therefore, in a residential space, it is necessary for the actual resident to directly manage radon, and the radon concentration can be reduced by periodically opening a window to provide natural ventilation. However, the natural ventilation method is disadvantageous to indoor heating in winter, and there is a problem in that the radon concentration in the winter period is the highest in the actual residential space.

In order to solve this problem, a soil exhaust method has been developed that discharges soil air present in the ground to the outside through an outdoor radon fan, thereby lowering the soil pressure relative to the indoor air pressure, thereby preventing the inflow of radon indoors.

However, since the conventional ventilation fan for reducing radon is installed and operated outdoors, the following problems occur.

In the case of a radon fan, the performance of the motor deteriorates due to the heat generated from the coil and core of the motor due to the operation of the motor in summer, and the failure of the radon fan occurs due to the operation of the motor and condensation (moisture) from the geothermal heat of the soil in winter. There is a problem of durability.

In addition, since the radon fan, which is entirely dependent on imports, only serves as an exhaust for a limited wide space under houses and facilities, there is a problem in that residents feel uncomfortable due to noise caused by static pressure. For example, indoor inflow of radon, which has become more concentrated at night or dawn, increases, while residents do not use a radon fan that makes noise for reasons such as sleeping, so they are exposed to the radon environment, which reduces their utility and radon reduction effect. There is this.

Therefore, there is a need for an improvement plan that can improve the indoor radon reduction effect and utilization in order to improve user safety and living convenience.

Matters described in this background section are prepared to improve understanding of the background of the invention, and may include matters that are not already known to those of ordinary skill in the art to which this technology belongs.

An embodiment of the present invention provides a radon fan control system and method capable of increasing indoor radon reduction effect and utilization by providing a low-noise, high-power radon fan with improved durability and automatically adjusting the output according to a resident's life pattern. do.

According to one aspect of the present invention, a radon fan installed on a pipe with one end buried in the outdoor ground of a building to discharge soil air containing radon to the atmosphere through a suction pipe connected to the center of the spiral body in which the impeller rotates a centrifugal fan for compressing the sucked soil air by centrifugal force and discharging it through a discharge pipe connected to one side of the body; A BLDC (Brush Less DC) motor that generates rotational force by supplying DC power to rotate the centrifugal fan connected through a rotating shaft and a high-speed bearing; A wireless communication means is provided to control the operation of the BLDC motor according to a control signal received from the outside, and includes a motor driving unit for adjusting the output of the BLDC motor according to the output level set in the control signal.

In addition, the BLDC motor is composed of a rotor having a plurality of permanent magnets radially with respect to the central rotation axis and a cylindrical stator accommodating the rotor, and is manufactured by applying a carbon-based radiator for heat dissipation during operation. can

In addition, the motor driving unit converts the DC power into three-phase power through a semiconductor switch element and applies it to each phase of the BLDC motor, and analyzes the control signal to determine the rotation speed and torque of the BLDC motor according to the set output level. can be adjusted

In addition, the radon fan includes a motor housing in which two housing members having a “U” cross-sectional shape are assembled through a sealing material and a fastening member in a state in which the BLDC motor and the motor driving unit are mounted in the internal space; And an embossed sound absorbing material is attached to the inner wall of the polygonal structure to block noise and may further include a casing for protecting equipment included in the radon fan.

In addition, the motor housing and the case may each have at least one vent hole for introducing or discharging the internal air according to the air flow formed therein by the rotation of the centrifugal fan.

On the other hand, according to an aspect of the present invention, the radon fan automatic control system for discharging soil air containing radon to the atmosphere by being installed on a pipe with one end buried in the outdoor ground of a building, according to any one of the preceding paragraphs radon pan; a radon detector that measures the radon concentration present in an indoor space; a wireless repeater that connects wireless communication between devices; And when the radon concentration measured by the radon detector is received from the wireless repeater and exceeds a set reference value, the radon fan is operated and a control signal according to the level of the radon concentration is applied to adjust the output level of the radon fan a control terminal.

In addition, the control terminal includes a wireless communication module for transmitting a control signal to the radon fan through the wireless repeater; an input/output module for displaying an input menu for controlling the radon fan and information generated according to an operating state of the radon fan; an environment setting module for setting an automatic operation mode according to the reference value of the radon concentration set initially as a default or set by the user; a life pattern recognition module for collecting life pattern information for each day of the week of whether the user is present, going out, returning, and going to bed in conjunction with a motion sensor or a user's smart device; and a control module for controlling the operation (ON) and termination (OFF) of the radon fan by comparing the radon concentration with the set upper limit reference value and lower limit reference value, and adjusting the output level of the radon fan corresponding to the radon concentration may include

In addition, the control module may determine whether a occupant exists in the room, operate the radon fan if the occupant exists, and limit the operation of the radon fan if the occupant does not exist.

In addition, the control module can adjust the output of the radon fan to a low noise output level by lowering the output level of the radon fan during the user's bedtime by recognizing the life pattern information.

In addition, the control module may temporarily down-convert the reference value at sunset time for each season or convert the radon fan to the low noise output level after maximally discharging radon existing in the soil by operating the radon fan in a forced high-speed mode.

In addition, the control terminal may be installed in the form of an app (APP) in any one of a smart phone, a tablet, a notebook computer, and a wearable terminal of the user.

On the other hand, according to an aspect of the present invention, a method for controlling a radon fan in which a control terminal is installed on a pipe with one end buried in the outdoor ground of a building through wireless communication to discharge soil air containing radon to the atmosphere, a) Comparing the obtained radon concentration measured in the indoor space from the radon detector with a set reference value; b) determining whether occupants exist in the room when the radon concentration exceeds the set upper limit reference value and satisfies the radon fan operating condition; c) determining the output level of the radon pan according to the radon concentration when it is determined that the occupant is present; and d) transmitting a control signal through wireless communication to operate (ON) the radon fan and control the rotation speed to an output level according to the radon concentration.

In addition, the step c) may include limiting the operation of the radon fan and waiting for the user to return if the occupant does not exist even if the radon concentration exceeds the upper limit reference value.

In addition, between steps c) and d), collecting the user's life pattern information to determine whether the user is sleeping, and setting the determined output level down to a low noise output level corresponding to the sleep mode when in the sleeping state. can do.

In addition, after step d), when the measured radon concentration falls below a lower limit reference value set as an operation termination condition of the radon pan, the method may further include transmitting an OFF signal to the radon pan.

According to an embodiment of the present invention, it is equipped with a low-noise, high-output radon fan with improved durability using a BLDC motor, and by controlling the output remotely and automatically adjusting the output according to the radon concentration, indoor radon reduction effect and user convenience can be improved. can

In addition, it is possible to increase the utility of the installed radon fan by automatically adjusting the operation of the radon fan and the output size of the bedtime in consideration of the user's life pattern.

In addition, by limiting unnecessary operation of the radon fan in the absence of occupants, it can be expected that the user's power consumption is reduced and the durability of the radon fan is extended.

1 schematically shows the configuration of a radon fan control system according to an embodiment of the present invention.
2 is a cross-sectional view taken along line AA of FIG. 1 showing the configuration of a radon pan according to an embodiment of the present invention.
3 is a cross-sectional view taken along line BB of FIG. 3 showing an installation state of a radon fan according to an embodiment of the present invention.
4 shows a comparison table between a radon pan according to an embodiment of the present invention and a conventional radon pan.
5 is a block diagram schematically showing the configuration of a control terminal according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, the present invention may be implemented in several different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated. In addition, terms such as “…unit”, “…group”, and “module” described in the specification mean a unit that processes at least one function or operation, which may be implemented as hardware or software or a combination of hardware and software. there is.

Throughout the specification, terms such as first, second, A, and B may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one element from another element, for example, without departing from the scope of the present invention, a first element may be called a second element, and similarly The second component may also be referred to as the first component.

Throughout the specification, when a certain element is referred to as 'connected' or 'connected' to another element, it may be directly connected or connected to the other element, but another element may exist in between. It should be understood that there may be On the other hand, when it is said that a certain element is 'directly connected' or 'directly connected' to another element, it should be understood that another element does not exist in the middle.

Throughout the specification, terms used are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

Throughout the specification, terms related to 'comprising', 'having', etc. are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification is present, but one or more other features. It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise herein, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be construed as being consistent with the contextual meaning of the related art, and are not to be construed in an ideal or overly formal sense unless explicitly defined in the present specification.

Now, a radon fan control system and method according to an embodiment of the present invention will be described in detail with reference to the drawings.

1 schematically shows the configuration of a radon fan control system according to an embodiment of the present invention.

1, the radon fan control system 100 according to the embodiment of the present invention is installed on a pipe (Pipe, P) with one end buried in the outdoor ground of a building to discharge soil air containing radon to the atmosphere. A fan 110, a radon detector 120 that measures the radon concentration present in an indoor space, a wireless repeater 130 that connects wireless communication between devices, and a wireless repeater 130 measured by the radon detector 120 When the radon concentration exceeds the set reference value by receiving the radon concentration, the control terminal 140 operates the radon fan 110 and adjusts the output of the radon fan 110 by applying a control signal according to the level of the radon concentration. include

This is a soil exhaust-type radon reduction facility that prevents radon from entering the indoor space by discharging the soil air existing in the ground of the building into the atmosphere through a radon fan, thereby lowering the soil pressure relative to the indoor air pressure.

Hereinafter, the building will be described assuming a house in which the user resides, but the embodiment of the present invention is not limited thereto, and may be various structures such as a villa, an apartment, a building, a school, and a government office. Accordingly, a plurality of radon pans 110 may be arranged at regular intervals around the perimeter according to the size of the building.

The radon fan 110 is installed on the pipe (P) fixed through the support to the outer wall of the house, and serves to suck in the soil air containing radon rising from the basement and then discharge it to the atmosphere. By reducing the pressure of the soil relative to the atmospheric pressure in the room through this soil exhaust method, it is possible to fundamentally block the inflow of radon into the room. The pipe (P) is divided into a suction pipe (P1) for sucking in the soil air and an exhaust pipe (P2) for discharging the soil air based on the radon fan (110).

2 is a cross-sectional view taken along line A-A of FIG. 1 showing the configuration of a radon pan according to an embodiment of the present invention.

3 is a cross-sectional view taken along line B-B of FIG. 3 showing an installation state of a radon fan according to an embodiment of the present invention.

2 and 3 , the radon fan 110 according to an embodiment of the present invention includes a centrifugal fan 111 , a brush less DC (BLDC) motor 112 , a motor driving unit 113 , and a motor housing 114 . ) and a case 115 .

The centrifugal fan 111 is a suction pipe (P1) connected to the suction port (111b) formed in the center of the spiral body (111a) in which the impeller rotates to compress soil air sucked by centrifugal force, and to one side of the body (111a) It has a structure for discharging the compressed soil air through the discharge pipe (P2) connected to the formed exhaust port (111c).

The centrifugal fan 111 is connected to a high-speed bearing so that it can be rotated with low noise and low vibration even at high-speed rotation.

The BLDC motor 112 generates rotational force by supplying DC power to rotate the centrifugal fan 111 connected through a rotating shaft and a high-speed bearing, and controls the rotational speed according to the applied control signal of the centrifugal fan 111 . Adjust the output.

The BLDC motor 112 is composed of a rotor having a plurality of permanent magnets radially based on the central rotation axis and a cylindrical stator accommodating the rotor, and reduces the ventilation performance of the radon fan 110 due to heat during operation. To solve this, it is manufactured by applying a carbon-based heat sink with a large heat dissipation effect.

The BLDC motor 112 does not generate mechanical friction loss, sparks, or noise, and can control speed and torque at various levels according to the applied control signal, so it can support a quiet mode, and maintenance is required due to its strong relative durability. There are advantages to not being.

The motor driving unit 113 is provided with a wireless communication means 113a to adjust the operation control (ON/OFF) and output level size of the BLDC motor 112 according to a control signal received from the outside (indoor/outdoor).

The motor driving unit 113 may operate the radon fan 110 by converting the supplied DC power into three-phase power through a semiconductor switch element and applying it to each phase of the BLDC motor 112 .

The motor driving unit 113 controls the rotation speed and torque of the BLDC motor 112 according to a set level by analyzing the control signal remotely received from the control terminal 140 .

The motor housing 114 is assembled through a sealing material and a fastening member in a state in which the BLDC motor 112 and the motor driving unit 113 are mounted in the inner space, and has waterproof properties. The motor housing 114 may be assembled through a fastening member after facing two housing members having a “C” cross-sectional shape.

The motor housing 114 protects the previously exposed motor substrate by using a heat-dissipating member having high waterproof and dust properties, thereby reducing the risk of deterioration and damage to the motor due to ingress of foreign substances and moisture.

The case 115 is a casing that protects the machinery and electronic equipment constituting the radon fan 110 from the external environment and blocks noise caused by the driving of the radon fan 110 .

The case 115 has an embossed sound absorbing material 116 attached to the inner wall of the polygonal structure to block noise generated when the radon fan 110 is driven.

A vent hole (H) is formed at at least one point on one side of the motor housing 114 and the lower surface of the case 115 to allow air to pass therethrough.

The vent hole (H) is a motor by introducing external air into or exhausting the internal air according to the airflow naturally formed inside by the rotation of the centrifugal fan 111 when the BLDC motor 112 is driven at each position. A ventilation, cooling, and dehumidifying atmosphere may be formed in the housing 114 and the case 115 .

Meanwhile, FIG. 4 shows a comparison table between a radon pan according to an embodiment of the present invention and a conventional radon pan.

Referring to FIG. 4, the conventional radon fan is a foreign product that is mostly imported and cannot control its output by AC power method, does not have a wireless control function, uses an axial fan, and has no self-waterproof function of the sound absorbing material and the motor.

On the other hand, the radon fan 110 according to an embodiment of the present invention, as described above, can control the output using a BLDC motor, can be remotely controlled indoors and outdoors, and uses a centrifugal fan driving method and sound absorbing material. It is significantly different from the conventional radon fan in that it is used to realize low noise/low vibration and secure durability through waterproofing of the motor.

On the other hand, the radon detector 120 is installed in the room adjacent to the soil to measure the radon concentration in the indoor space. The radon detector 120 is configured to be portable and can be relatively located in a place with high radon inflow into the room.

The radon detector 120 is activated in real time (continuously) or according to a set time period to measure the radon concentration, and transmits the measured radon concentration to the control terminal 140 through the wireless repeater 130 .

The wireless repeater 130 serves to relay communication between the connected wireless communication devices (eg, WIFI).

The control terminal 140 is a wireless terminal including various hardware and software for controlling the overall operation for remotely and automatically controlling the radon fan 110 according to an embodiment of the present invention.

The control terminal 140 may be configured as a separate radon fan 110 dedicated control terminal shown indoors in FIG. 1 .

However, the embodiment of the present invention is not limited thereto, and the control terminal 140 is installed in the form of an app (APP) in any one of the smart phones, tablets, notebooks, and wearable terminals possessed by the user in FIG. 1 . and a radon fan 110 control function using the corresponding smart device can be implemented.

5 is a block diagram schematically showing the configuration of a control terminal according to an embodiment of the present invention.

Referring to FIG. 5 , the control terminal 140 according to an embodiment of the present invention includes a wireless communication module 141 , a display module 142 , an environment setting module 143 , a life pattern recognition module 144 , and a storage module ( 145 ), a power supply module 146 , and a control module 147 . Here, the control terminal 140 may be configured as an integrated terminal further including the radon detector 120, and in this case, it may be omitted without configuring the radon detector 120 as a separate product.

The wireless communication module 141 may receive the radon concentration measured by the radon detector 120 through the wireless repeater 130 and transmit a control signal for operating the radon fan 110 .

The input/output module 142 provides an input menu for the operation of the control terminal 140 and provides a user interface for displaying various information generated according to the operation state.

For example, the input/output module 142 may be configured as a touch screen to simultaneously process user input/output, or may have a configuration including separate operation buttons and a display screen, respectively.

The environment setting module 143 is initially set as a default or sets an automatic operation mode according to the reference value of the radon concentration set by the user, and the user's reservation operation time, timer, output level and cycle (day, week, day, week, Month), etc., can be input to set the reservation operation mode. Here, the reference value can be set to a threshold value of 148Bq/m3 or less because the domestic indoor radon concentration recommendation standard is 148Bq/m3. In this case, the reference value may include an upper limit reference value for starting the operation of the radon fan 110 and a lower limit reference value for terminating the operation of the radon fan 110 because the radon concentration within a certain range is lowered therefrom. In addition, the output level is set to a high-speed mode (4 levels), a normal mode (3 levels), a low-speed mode (2 levels) and a sleep mode (1 level) in the order of increasing the output (rotation speed) of the radon fan 110 can be

The life pattern recognition module 144 collects daily life patterns such as the user's occupancy, going out (commuting), returning to work, and going to bed in conjunction with the motion sensor or the user's smart device.

For example, the life pattern recognition module 144 may determine that if the user's motion is not recognized for a certain period of time in consideration of the weekly time zone of the day, it may be recognized that the user has gone out, and then returned when the user's motion is recognized.

In addition, the life pattern recognition module 144 may determine that if the user's motion is not recognized for a certain period of time in consideration of the night and dawn time zones, it may be recognized that the user has slept, and then, if the user's motion is recognized, it may be determined that the user has woken up.

In addition, the life pattern recognition module 144 may collect the user's life pattern information by month, day, and day of the week from the user's smart device, such as the smart phone or wearable terminal, to recognize the various types of determination information.

The life pattern information recognized in this way is later used to determine whether the radon fan 110 operates and the output level when the control module 147 controls the automatic operation mode.

The storage module 145 stores various programs and data for the operation of the control terminal 140 .

For example, the storage module 145 may store the set value of the automatic operation mode, environment setting information, life pattern information, and the like, and store the output level of the radon fan 110 step by step.

The power supply module 146 is composed of a rechargeable battery capable of charging/discharging and supplies power for driving each module of the control terminal 140 .

The control module 147 includes at least one processor for automatic control of the radon fan according to an embodiment of the present invention, and performs the execution of various programs and automatic control of the radon fan using various data.

The control module 147 remotely transmits an operation (ON) or operation end (OFF) signal to the radon fan 110 by a user's manual input through the input/output module 142, and controls the output level of the radon fan 110 It can be adjusted step by step.

The control module 147 may control the operation of the radon fan 110 through the wireless communication module 141 both indoors and outdoors according to the user's location, and this is accomplished through connection with the wireless repeater 130 .

The control module 147 automatically controls the radon fan according to a program set in consideration of various conditions such as indoor inflow conditions of natural environmental radon concentration, seasonal and temporal conditions, user's occupancy conditions, and user's life pattern as well as manual remote control. can do.

For example, the automatic control of various radon fans of the control module 147 will be described as follows.

The control module 147 compares the radon concentration measured by the radon detector 120 with the set upper/lower limit reference values to automatically control whether the radon fan 110 is operating (ON/OFF) and respond to the radon concentration. It is possible to adjust the output level of the radon fan 110.

Considering the natural and environmental factors, the concentration of radon in the soil becomes higher at night (especially at dawn) compared to the daytime due to the difference in atmospheric pressure and flows into the room, and the concentration increases in winter than in summer. On the other hand, in the case of houses, they go out for school, work, and social activities during the day, but most return at night. There are trade-offs that expose you to radon risk. In addition, the operation of the radon fan 110 in a situation where there is no occupant in the room causes unnecessary power consumption.

In consideration of these various factors, the control module 147 detects the presence of occupants in the room, operates the radon fan 110 when occupants exist, and restricts the operation of the radon fan 110 when occupants do not exist. can That is, the automatic control function may be limited in a situation where there is no occupant in the room.

In addition, the control module 147 automatically operates the radon fan 110 according to the preset operation mode set by the user, but even in this case, automatic control may be performed in consideration of the presence of the occupants.

In addition, the control module 147 recognizes the life pattern information and adjusts the output level of the radon fan 110 down at the user's bedtime to reduce the output of the radon fan 110 to a low noise output level (sleep mode / 1 level). can be adjusted

Here, it is reported that the concentration of radon is usually 10 times higher at dawn than during the daytime, but it may be difficult to expect a sufficient reduction effect with a low noise output level.

Accordingly, the control module 147 temporarily down-converts the reference value at sunset time for each season or operates the radon fan 110 in a forced high-speed mode (4 level) to discharge the radon present in the soil as much as possible, and then to a low noise output level. can be switched This is a method of naturally increasing the output level of the radon fan 110 as the reference value is shifted downward for a predetermined time.

As such, the control module 147 operates according to a program set for the purpose of increasing the indoor radon reduction effect and utilization by automatically adjusting the output of the radon fan 110, and the set program is in the embodiment of the present invention. It may be programmed to perform each step of the automatic radon fan control method according to the

Therefore, a method for automatically controlling a radon fan according to an embodiment of the present invention will be described below, but the control is performed by the control module 147 , but the control module 147 is integrated into the control terminal 140 to control the subject. It will be described with the terminal 140 .

6 is a flowchart schematically illustrating a method for automatically controlling a radon fan according to an embodiment of the present invention.

Referring to FIG. 6 , the control terminal 140 according to an embodiment of the present invention acquires the radon concentration measured by the radon detector 120 through wireless communication (S1).

If the radon concentration is less than the upper limit reference value set as the operating condition of the radon fan 110 (S2; no), the control terminal 140 returns to step S1 without operating the radon fan 110 and displays the next measured radon concentration. collect

On the other hand, when the radon concentration exceeds the upper limit reference value (S2; Yes), the control terminal 140 collects life pattern information through the life pattern recognition module 144 to determine whether an occupant exists in the room (S3).

At this time, the control terminal 140 returns to step S1 without operating the radon fan 110 if there is no occupant in the room even if the radon concentration exceeds the upper limit reference value (S3; No), and collects the next measured radon concentration. do.

On the other hand, the control terminal 140 determines the output level of the radon pan 110 according to the radon concentration when there is an indoor occupant or a user who has gone out returns (S3; Yes) (S4). In this case, the output level may be set to any one of a high speed mode (4 levels), a normal mode (3 levels), and a low speed mode (2 levels) according to the radon concentration.

Here, the control terminal 140 collects life pattern information through the life pattern recognition module 144 to further determine whether the user is sleeping, and if the sleeping state (S5; Yes), the determined output level corresponding to the sleeping mode It sets down to a low noise output level (S6), and transmits an operation signal (ON) to the radon fan 110 (S7). At this time, the output of the radon fan 110 is adjusted according to the low noise output level.

On the other hand, if the user is not sleeping (S5; No), the control terminal 140 transmits an operation signal ON to the radon fan 110 and controls the output level according to the radon concentration (S7).

Thereafter, when the radon concentration measured by the radon detector 120 falls below the lower limit reference value set as the operation termination condition of the radon fan 110 (S8; Yes), the control terminal 140 terminates the operation of the radon fan 110 (OFF) signal is transmitted (S9).

In the above, the automatic control method of the radon fan has been described in the embodiment of the present invention, but the present invention is not limited to the above embodiment and various other modifications are possible.

For example, in step S5 shown in FIG. 6 , it has been described that the control terminal 140 detects the sleeping state of the user and sets the preset output level of the radon fan 110 down to the low noise output level. However, the embodiment of the present invention is not limited thereto, and the control terminal 140 checks the reservation operation mode set in the environment setting module 143 and sets the high-speed mode (level 4), the normal mode (level 3) according to the reservation operation time. ), low-speed mode (2-level), and sleep mode (1-level) can change the output level.

In addition, based on the above description, in any step of the automatic control method of the radon fan of FIG. 6 , the user remotely operates/stops the radon fan 110 through the control terminal 140 indoors or outdoors, or adjusts the output level It is self-evident that

As described above, according to an embodiment of the present invention, a low-noise, high-output radon fan with improved durability is provided using a BLDC motor, and by controlling the output remotely and automatically adjusting the output according to the radon concentration, indoor radon reduction effect and user convenience has the effect of improving

In addition, there is an effect that can increase the utilization of the installed radon fan by automatically adjusting the operation of the radon fan and the output size of the bedtime in consideration of the user's life pattern.

In addition, by limiting unnecessary operation of the radon fan in the absence of occupants, it can be expected that the user's power consumption is reduced and the durability of the radon fan is extended.

The embodiment of the present invention is not implemented only through the apparatus and/or method described above, and may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention, a recording medium in which the program is recorded, etc. Also, such an implementation can be easily implemented by an expert in the technical field to which the present invention pertains from the description of the above-described embodiment.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improved forms of the present invention are also provided by those skilled in the art using the basic concept of the present invention as defined in the following claims. is within the scope of the right.

100: radon fan control system 110: radon fan
111: centrifugal fan 112: BLDC motor
113: motor driving unit 114: motor housing
115: case 116: sound absorbing material
120: radon detector 130: radio repeater
140: control terminal 141: wireless communication module
142: display module 143: configuration module
144: life pattern recognition module 145: storage module
146: power supply module 147: control module
P: pipe P1: suction pipe
P2: exhaust pipe H: vent hole

Claims (15)

In the radon fan automatic control system installed on a pipe with one end buried in the outdoor ground of a building to discharge soil air containing radon to the atmosphere,
a centrifugal fan for compressing the soil air sucked in through a suction pipe connected to the center of the spiral body in which the impeller rotates by centrifugal force and discharging it through a discharge pipe connected to one side of the body; A BLDC (Brush Less DC) motor that generates rotational force by supplying DC power to rotate the centrifugal fan connected through a rotating shaft and a high-speed bearing; a motor driving unit provided with a wireless communication means to control the operation of the BLDC motor according to a control signal received from the outside, and to adjust the output of the BLDC motor according to an output level set in the control signal; a motor housing in which two housing members having a “C” cross-sectional shape are assembled through a sealing material and a fastening member in a state in which the BLDC motor and the motor driving unit are mounted in an internal space; And a radon fan comprising a casing for protecting equipment and blocking noise by attaching an embossed sound-absorbing material to the inner wall of the polygonal structure;
a radon detector that measures the radon concentration present in an indoor space;
a wireless repeater connecting wireless communication between devices; and
When the radon concentration measured by the radon detector is received from the wireless repeater and exceeds a set reference value, the radon fan is operated and a control signal according to the level of the radon concentration is applied to control the output level of the radon fan terminal; including,
The control terminal includes a life pattern recognition module that interworks with the user's smart device to collect life pattern information for each day of the week whether the user is present, going out, returning, and going to bed, and according to the recognition of the life pattern information At the user's bedtime, the output level of the radon fan is lowered to adjust the output of the radon fan to a low noise output level,
The centrifugal fan is connected to a high-speed bearing and rotates with low noise and low vibration even at high-speed rotation. Supports normal mode, slow mode and sleep mode,
The life pattern recognition module collects the user's life pattern information by month, day, and day from the smart device of a smart phone or wearable terminal, but if the operation of the smart device is not recognized for a certain period of time in consideration of night and dawn time zones, the user A radon fan automatic control system that determines that the user is asleep and wakes up when the operation of the smart device is recognized thereafter. According to claim 1,
The BLDC motor is
A radon fan automatic control system composed of a rotor having a plurality of permanent magnets radially based on the central axis of rotation and a cylindrical stator accommodating the rotor, and manufactured by applying a carbon-based radiator for heat dissipation during operation. According to claim 1,
The motor driving unit
Automatic control of a radon fan that converts the DC power into three-phase power through a semiconductor switch element and applies it to each phase of the BLDC motor, and adjusts the rotation speed and torque of the BLDC motor according to the set output level by analyzing the control signal system. delete According to claim 1,
The motor housing and the case are
A radon fan automatic control system in which at least one vent hole for introducing or discharging internal air according to an airflow formed therein by rotation of the centrifugal fan is formed, respectively. delete According to claim 1,
the control terminal
a wireless communication module for transmitting a control signal to the radon fan through the wireless repeater;
an input/output module for displaying an input menu for controlling the radon fan and information generated according to an operating state of the radon fan;
an environment setting module for setting an automatic operation mode according to the reference value of the radon concentration initially set as a default or set by the user; and
a control module that compares the radon concentration with a set upper limit reference value and a set lower limit reference value to control operation (ON) and termination (OFF) of the radon fan, and adjust an output level of the radon fan corresponding to the radon concentration;
A radon fan automatic control system comprising a. 8. The method of claim 7,
The control module is
A radon fan automatic control system that detects the presence of an occupant in the room, operates the radon fan when the occupant is present, and restricts the operation of the radon fan when the occupant does not exist. delete 8. The method of claim 7,
The control module is
An automatic control system for a radon fan that temporarily down-converts the reference value or operates the radon fan in a forced high-speed mode at the sunset time for each season to exhaust the radon present in the soil as much as possible and then switch to the low noise output level. According to claim 1,
the control terminal
A radon fan automatic control system installed in the form of an app (APP) on any one of the user's smart phones, tablets, laptops, and wearable terminals.
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