KR101998640B1 - Ventilation system and ventilation method for controlling ventilation path - Google Patents

Abstract

At least one sensor for sensing the characteristics of the indoor air while in contact with the indoor air; A plurality of fans for introducing outdoor air, for introducing indoor air, or for forming a flow in the indoor air; And operating at least two or more fans of the plurality of fans when the indoor air condition value determined according to the measured value of the at least one sensor is equal to or greater than or equal to the reference value, to determine the flow of outdoor air and to determine the outdoor air flow. According to the flow of the present invention provides a ventilation system including a control device for operating the first fan is easy to enter the outdoor air and the second fan is easy to outflow of the indoor air.

Description

Ventilation system and ventilation method for controlling the ventilation path {VENTILATION SYSTEM AND VENTILATION METHOD FOR CONTROLLING VENTILATION PATH}

The present invention relates to a technology for controlling the indoor environment. More specifically, it relates to a technique for controlling ventilation for indoor air.

The indoor environment can be controlled from two perspectives. One is to minimize energy consumption and the other is to maximize the convenience of residents. In the related art, by controlling the indoor environment by focusing only on one of these aspects, there are cases where loss from other viewpoints is caused.

For example, many of the EMS (Energy Management System) technologies controlled the indoor environment in terms of minimizing energy consumption. This control point contributed to reducing fossil fuel depletion and environmental pollution to some extent, but there was a problem that the residents did not become popular because of low response. In other respects, the conventional EMS technology is focused on minimizing energy consumption, resulting in a loss of convenience for residents.

Recently, technologies for minimizing energy consumption and rationally adjusting the convenience of occupants have been developed, but most of them are technologies related to cooling and heating control of the room, optimizing indoor air quality such as maintaining proper indoor humidity, preventing surface condensation, and improving air quality for fine dust. No related technology is being presented.

On the other hand, indoor air quality improvement operations such as maintaining proper indoor humidity, preventing surface condensation, and improving air quality against fine dust may be performed by specific apparatuses, for example, humidifiers / dehumidifiers, air conditioners, and air cleaners. It may also be carried out by a natural ventilation method.

The natural ventilation method is a method of improving indoor air quality by exchanging indoor air and outdoor air, and may be performed by opening a window or a door installed in a building or operating a ventilation fan.

However, the conventional natural ventilation method does not have a large amount of ventilation and does not actively ventilate the air at a required position, and thus, it is not actively used as a method for improving indoor air quality.

In this context, it is an object of the present invention to provide a ventilation technique that increases the amount of ventilation and controls the air in the required position through control of the ventilation path.

In order to achieve the above object, in one aspect, the present invention, at least one sensor for sensing the characteristics of the indoor air in contact with the indoor air; A plurality of fans for introducing outdoor air, for introducing indoor air, or for forming a flow in the indoor air; And operating at least two or more fans of the plurality of fans when the indoor air condition value determined according to the measured value of the at least one sensor is equal to or greater than or equal to the reference value, to determine the flow of outdoor air and to determine the outdoor air flow. According to the flow of the present invention provides a ventilation system including a control device for operating the first fan is easy to enter the outdoor air and the second fan is easy to outflow of the indoor air.

In such a ventilation system, the control device can grasp the flow of outdoor air in accordance with the rotation speed of the plurality of fans in a non-powered state. Alternatively, the control device may grasp the flow of outdoor air in accordance with the rotation direction of the plurality of fans in a non-powered state. Alternatively, the control device may obtain the wind direction information of the outdoor air from the weather server and determine the flow of the outdoor air from the wind direction information.

In such a ventilation system, the control device obtains measured values for room temperature and room humidity from the at least one sensor, and the dew point temperature determined according to the room temperature and the room humidity is lower than the surface temperature of the indoor wall. The at least two fans may be operated. The control device obtains an outdoor temperature from an outdoor temperature sensor or a meteorological server, divides a value obtained by multiplying a difference between the outdoor temperature and the indoor temperature by a pre-stored heat permeation rate by the inner wall heat transfer rate, and then adds the indoor temperature to the surface temperature. Can be calculated.

In such a ventilation system, the control device is configured to turn off the at least two fans when the indoor fine dust concentration determined according to the measurement value of the fine dust sensor is equal to or greater than the outdoor fine dust concentration obtained from the weather server or exceeds the outdoor fine dust concentration. It can be operated.

One of the plurality of fans is a kitchen hood fan installed in the kitchen hood, and the kitchen hood fan may be operable to discharge indoor air. The first fan may be a bidirectional fan capable of flowing air in both directions.

In another aspect, the present invention includes the steps of: obtaining a measurement of a characteristic of indoor air from at least one sensor; Checking an indoor air condition value according to the measured value and comparing the condition value with a reference value; Determining a flow of outdoor air and determining a first fan that facilitates the inflow of outdoor air and a second fan that facilitates the outflow of indoor air according to the flow of the outdoor air; And operating the first fan and the second fan when the state value is greater than or equal to the reference value or exceeds the reference value.

In this ventilation method, the control device may change the flow of indoor air by turning the first fan or the second fan on or off periodically or aperiodically.

In addition, the first fan and the second fan may be located on a different wall surface, wherein the control device further operates or moves the third fan located on the same wall surface as the first fan for the inflow of outdoor air. A fourth fan located on the same wall as the second fan may be further operated for the outflow of indoor air. The control device may further operate a third fan located on the same wall surface as the first fan for the outflow of indoor air, or a fourth fan located on the same wall surface as the second fan for the inflow of outdoor air. It can also be activated.

In yet another aspect, the present invention provides an apparatus comprising: at least three fans configured to introduce outdoor air, to discharge indoor air, or to form a flow in the indoor air, and disposed at different locations; And at least two or more fans of the at least three fans are controlled to flow air in different directions with respect to the inflow direction of the outdoor air and the outflow direction of the indoor air, wherein the at least two fans are simultaneously operated in one time period. The first fan located in the inflow direction of the outdoor air among the at least two fans according to the flow of the outdoor air is operated in the inflow direction of the outdoor air, and the second fan located on a wall surface different from the first fan. The present invention provides a ventilation system including a control device for operating in an outflow direction of indoor air.

In such a ventilation system, the control device can be operated while alternating the third fan and the first fan located in the inflow direction of the outdoor air. And, the control device can be operated while alternating the fourth fan and the second fan located on the same wall surface as the second fan.

As described above, according to the present invention, it is possible to increase the amount of ventilation through the control of the ventilation path and to vent the air at the required position. In addition, through this, it is possible to perform indoor air quality improvement operations such as maintaining an appropriate indoor humidity, preventing surface condensation, and improving air quality for fine dust.

1 is a view showing a building and a ventilation system according to an embodiment.
2 is a flowchart illustrating a first example of a method for ventilating a control apparatus according to an embodiment.
3 is a view showing a first example of a ventilation path according to an embodiment.
4 is a diagram illustrating a second example of a ventilation path according to an exemplary embodiment.
5 is a flowchart illustrating a second example of a ventilation method according to an embodiment.
6 is a flowchart illustrating a third example of a ventilation method according to an embodiment.
7 is a view schematically showing a wet air diagram.
8 is a flowchart illustrating a fourth example of a ventilation method according to an embodiment.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, in describing the component of this invention, terms, such as 1st, 2nd, A, B, (a), (b), can be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to that other component, but there may be another configuration between each component. It is to be understood that the elements may be "connected", "coupled" or "connected".

1 is a view showing a building and a ventilation system according to an embodiment.

Referring to FIG. 1, the ventilation system may include a fan 110, a control device 120, a sensor 130, and the like.

The ventilation system may include a temperature sensor, a humidity sensor, a fine dust sensor, a CO2 sensor, a wind direction sensor, and the like as the sensor 130. The sensor 130 may sense the characteristics of the indoor air, for example, temperature, humidity, CO 2 concentration, flow direction (wind direction, etc.) while being in contact with the indoor air. Alternatively, while the sensor 130 is installed outdoors, the sensor 130 may contact outdoor air and sense characteristics of outdoor air.

The temperature sensor is an indoor temperature sensor that measures the temperature of the indoor air by a predetermined distance away from the inner wall surface of the wall 102, and an outdoor temperature sensor that measures the temperature of the outdoor air by being separated from the outer wall surface of the wall 102 by a predetermined distance. It may be an indoor surface temperature sensor installed on the inner wall surface of the 102 to measure the surface temperature of the inner wall surface, an outdoor surface temperature sensor installed on the outer wall surface of the wall 102 to measure the surface temperature of the outer wall surface.

The temperature sensor may transmit the temperature measured using the communication device to the control device 120. The temperature sensor may include an RFID (Radio Frequency IDentification) device as a communication device, but is not limited thereto and may include various devices of wireless communication or wired communication as a communication device.

The humidity sensor may be an indoor humidity sensor installed indoors or an outdoor humidity sensor installed outdoors. According to the embodiment, the temperature sensor may be installed at the same point while forming the sensor module integrated with the humidity sensor. The humidity sensor may transmit the humidity measured using the communication device to the control device 120.

The sensor 130 may be embedded in the control device 120. In this embodiment, as an example, sensor 130 may transmit the measured value to control device 120 via a signal line, and as another example, sensor 130 may transmit the measured value through memory to control device 120. ) Can be shared with.

On the other hand, natural air leakage may occur in the building 100 according to the degree of airtightness. In addition, indoor air and outdoor air of the building 100 may be exchanged according to the air leakage. On the other hand, air leakage may cause a surface condensation by lowering the surface temperature of the inner wall surface. The amount of air leakage may increase as the insulation performance of the wall 102 decreases. However, when the insulation performance decreases to a certain degree or less, condensation may not be prevented even when dehumidification control is performed indoors. The control device 120 may track the degradation of the thermal insulation performance and provide an alarm to the occupants.

On the other hand, the building 100 may be provided with devices for changing the indoor air quality. For example, the building 100 may include a heating and cooling device. In addition, the fan 100 may be installed in the building 100 to exchange outdoor air with indoor air. In addition, the building 100 may be provided with a shutter or a window that is automatically opened and closed. In addition, the building 100 may be provided with an air cleaner to improve the indoor dust concentration, it may be installed a dehumidifier and / or a humidifier to control the indoor humidity. These devices-air conditioners, fans, shutters, windows, air purifiers, dehumidifiers, humidifiers, etc.-can be controlled by the control device 120 based on Information and Communication Technologies (ICT).

The control device 120 may control each device through wireless communication, but according to an embodiment, the control device 120 may control each device through wire communication, for example, power line communication.

On the other hand, the control device 120 may control the fan 110 to naturally ventilate the indoor air, thereby improving the indoor air quality.

A plurality of fans 110 may be installed in the building 100, and the fans 110 may introduce outdoor air into the room, outflow the indoor air to the outside, or form a flow in the indoor air.

The plurality of fans 110 may include a unidirectional fan capable of flowing air in one direction, and a bidirectional fan capable of flowing air in both directions. For example, the unidirectional fan may be installed at an opening of the wall 102 to allow air to flow in a direction in which indoor air flows out, or to flow air in a direction in which outdoor air flows into the room. The bidirectional fan may allow air to flow in one direction or in another direction depending on the rotational direction of the blade.

Among the plurality of fans 110 may include a kitchen hood fan installed in the kitchen hood, the kitchen hood fan may be a unidirectional fan that discharges indoor air to the outside.

On the other hand, the control device 120 may ventilate the indoor air while controlling the ventilation path through the plurality of fans (110). Conventionally, in the ventilation system without the control of the ventilation path, there is a problem that only the indoor air around the fan is ventilated or the indoor air does not flow smoothly due to the simple operation of the fan. On the contrary, the ventilation system according to an embodiment may ventilate the entire indoor air by controlling the ventilation path through the plurality of fans 110 and increase the amount of ventilation.

2 is a flowchart illustrating a first example of a method for ventilating a control apparatus according to an embodiment.

Referring to FIG. 2, the control device may obtain a measurement value of the characteristic of the indoor air from at least one sensor (S200).

And, the control device can grasp the flow of the outdoor air (S202).

The flow of outdoor air can be understood as an indicator such as wind direction and wind speed. For example, the controller can determine the direction of the wind direction and how much the wind speed is due to the flow of outdoor air.

In particular, the controller can grasp the flow of outdoor air around the fan. For example, the controller can determine whether outdoor air around the fan is blowing in or out of the fan. In addition, the controller may determine how much wind speed blows or blows the outdoor air around the fan.

The controller may determine a first fan in which outdoor air is easily introduced and a second fan in which outdoor air is easily outflowed according to the flow of outdoor air (S204).

The controller may match the wind direction of the outdoor air and the position of each fan to determine a first fan which is easy to inflow of outdoor air and a second fan which is easy to outflow of indoor air. For example, if east wind is blowing outside the building, the first fan is installed on the east wall of the building, and the second fan is installed on the west wall of the building, the control unit may cause the first fan to The fan may be determined as an easy fan, and the second fan may be determined as a fan that is easy to leak indoor air.

The control device obtains weather information, for example, wind direction information, from an information device capable of providing wind direction and wind speed of outdoor air, such as a weather server, and can grasp the flow of outdoor air through such weather information. The control device may further include position information of the fan. The control device may match the weather information with the location information of the fan to determine a first fan that facilitates the inflow of outdoor air and a second fan that facilitates the outflow of indoor air.

The flow of outdoor air can also be checked through the fan. For example, the controller can determine the flow of outdoor air according to the number of revolutions of the fan in the non-powered state. In general, the higher the rotation speed of the fan in the non-powered state, the greater the amount of air flowing into the room from the outside. In addition, when the fan in the non-powered state is not rotating, there may be no air flowing into the indoors from the outside, and thus the indoor air may be easily leaked to the outdoors. Of course, in this embodiment, the fan can detect the rotational speed or rotational direction of the blade and transmit the detected information to the control device.

As another example, the control device can determine the flow of outdoor air according to the rotation direction of the fan in a non-powered state. When the fan is powered, the fan can flow air in a constant direction. On the contrary, when the air around the fan is in a non-powered state, the rotation direction of the fan can be changed according to the air flow direction.

On the other hand, the control device may compare the indoor air condition value and the reference value confirmed according to the measured value of the sensor (S206).

When the indoor air condition value is equal to or greater than the reference value (YES in S206), at least two fans including the aforementioned first fan and the second fan may be operated to ventilate the indoor air (S208). .

At this time, the first fan which is easy to inflow of outdoor air and the second fan which is easy to outflow of indoor air are simultaneously operated to increase the ventilation volume, and a ventilation path may be formed in the indoor space from the first fan to the second fan.

3 is a view showing a first example of a ventilation path according to an embodiment.

Referring to FIG. 3, at least three fans 110a, 110b, and 110c may be disposed in the building 100.

The second fan 110b may be located on a wall different from the first fan 110a that is easily introduced to the outdoor air, and the third fan 110c may be located on the same wall as the first fan 110a. In this arrangement, both the first fan 110a and the third fan 110c may be in a position where the inflow of outdoor air is easy.

The controller may operate the first fan 110a in the direction in which the outdoor air flows, and simultaneously operate the second fan 110b in the direction in which the indoor air flows out. According to the operation of the first fan 110a and the second fan 110b, a flow of air corresponding to the first path P1 may be formed.

The control device may operate the third fan 110c in a direction in which the outdoor air flows, and simultaneously operate the second fan 110b in a direction in which the indoor air flows out. As the third fan 110c and the second fan 110b operate, a flow of air corresponding to the second path P2 may be formed.

The control device operates only the third fan 110c while the operation of the first fan 110a and the second fan 110b is stopped to form a flow of air corresponding to the third path P3 in the indoor space. Can be. After the air flow in the third path P3 is formed, the control device can operate the second fan 110b to allow the indoor air moved along the third path P3 to flow out.

As another example, the controller may change the flow of indoor air by turning on / off the second fan 110b periodically or aperiodically. When the second fan 110b is operated while the third fan 110c is operating, the flow of indoor air may be formed like the second path P2. In addition, when the second fan 110b stops operating while the third fan 110c is in operation, the flow of indoor air may be formed like the third path P3. As such, the control device may turn on / off the second fan 110b periodically or aperiodically to ventilate the indoor air while changing the flow of indoor air into the second path P2 and the third path P3. This makes it possible to ventilate a wider range of indoor air.

As another example, the control device may change the flow of indoor air by turning on / off the first fan 110a periodically or aperiodically. In this example, when the first fan 110a is ON, the second fan 110b may allow air flowing through the first path P1 to flow outside, and the first fan 110a may be out of the air. When turned off, the second fan 110b may allow air flowing through the second path P2 or the third path P3 to flow outside.

4 is a diagram illustrating a second example of a ventilation path according to an exemplary embodiment.

Referring to FIG. 4, at least three fans 110a, 110b, 110c, and 110d may be disposed in the building 100. In addition, the first fan 110a may be located in a direction in which outdoor air is easily introduced, and the second fan 110b may be located in a direction in which indoor air is easily leaked. The third fan 110c may be located on the same wall surface as the first fan 110a, and the fourth fan 110d may be located on the same wall surface as the second fan 110b.

The control device may include at least two or more fans, for example, a first fan 110a and a second fan, of at least three or more fans 110a, 110b, 110c, and 110d with respect to the inflow direction of the outdoor air and the outflow direction of the indoor air. 110b- may control the flow of air in different directions. In addition, the control device may simultaneously operate the at least two fans in one time period such that the inflow of outdoor air and the outflow of indoor air occur simultaneously. In addition, the control device operates the first fan 110a positioned in the inflow direction of the outdoor air among the at least two fans according to the flow of the outdoor air, and is different from the first fan 110a. The second fan 110b located on the wall surface may be operated in the outflow direction of the indoor air.

The control device may be operated while alternating the first fan 110a and the third fan 110c positioned in the inflow direction of the outdoor air. At this time, the indoor air flow of the first path P1 and the second path P2 may be formed with respect to the second fan 110b. In addition, according to the alternation, the first fan 110a and the third fan 110c are repeatedly turned on and off, and according to the on and off, the flow of indoor air is changed and ventilation is made to the indoor air in a wider area. do.

The control device may operate while alternately rotating the fourth fan 110d and the second fan 110b positioned on the same wall surface as the second fan 110b. At this time, the indoor air flows of the first path P1, the second path P2, the fourth path P4, and the fifth path P5 with respect to the first fan 110a and the third fan 110c. Can be formed. In addition, according to the alternation, the second fan 110b and the fourth fan 110d are repeatedly turned on and off, and the flow of indoor air is changed according to the on and off, and ventilation is made to the indoor air in a wider area. You lose.

On the other hand, the control device further moves the third fan (110c) located on the same wall surface as the first fan (110a) for the outflow of indoor air or the fourth fan (located on the wall surface, such as the second fan (110b) ( 110d) can be further operated for the outflow of indoor air. In this case, air flows such as the sixth path P6 and the seventh path P7 may be formed. In this case, when the wind speed of the outdoor air of the third fan 110c is low or the wind speed of the outdoor air of the fourth fan 110d is low, it is preferable to control in this way.

5 is a flowchart illustrating a second example of a ventilation method according to an embodiment.

Referring to FIG. 5, the control device may acquire an outdoor air condition value (S500). For example, the controller may acquire outdoor humidity, outdoor temperature, outdoor dust concentration, and the like as outdoor air condition values.

The control device may obtain a room air condition value (S502). For example, the controller may acquire indoor humidity, indoor temperature, outdoor fine dust concentration, etc. as indoor air condition values.

The controller may compare the indoor air condition value and the outdoor air condition value (S502).

And, if it is necessary to ventilate the indoor air to the outdoor air (C1 to C1), it is possible to perform natural ventilation through the control of the plurality of fans (S506). For example, if the indoor fine dust concentration determined according to the measurement value of the fine dust sensor is equal to or greater than the outdoor fine dust concentration obtained from the meteorological server or exceeds the outdoor fine dust labor, the control unit operates a plurality of fans to operate the indoor air. Can be ventilated with outdoor air.

The control device may further operate an indoor device (eg, an air cleaner, etc.) to supplement natural ventilation as necessary (S508).

6 is a flowchart illustrating a third example of a ventilation method according to an embodiment.

Referring to FIG. 6, the control device may acquire an indoor temperature Ti and an indoor humidity Hi (S600). The control device may obtain the indoor temperature Ti and the indoor humidity Hi through the indoor temperature and humidity sensor.

The control device may obtain the outdoor temperature To from the outdoor temperature sensor (S602).

The controller divides the pre-stored heat transmission rate (Uv) by the difference between the outdoor temperature (To) and the room temperature (Ti) by the inner wall heat transfer rate (K), and then adds the room temperature (Ti) to the surface temperature of the inner wall surface ( Ts) can be calculated (S604).

[Equation 1]

Heat Transmission Rate (Uv) = (Indoor Temperature (Ti)-Surface Temperature (Ts)) / (Indoor Temperature (Ti)-Outdoor Temperature (To)) * Inner Wall Heat Transfer Rate (K)

[Equation 2]

Surface temperature (Ts) = heat transmission rate (Uv) * (outdoor temperature (To)-room temperature (Ti)) / inside wall heat transfer rate (K) + room temperature (Ti)

Equation 1 regarding the heat permeability Uv is summarized as Equation 2 with respect to the surface temperature Ts.

The controller may calculate the surface temperature Ts according to Equation 2.

The controller may calculate the dew point temperature Tc by substituting the indoor temperature Ti and the indoor humidity Hi into the wet air diagram as shown in FIG. 7 (S606).

Then, the control device compares the surface temperature Ts and the dew point temperature Tc (S608), and when the surface temperature Ts is lower than the dew point temperature Tc (YES in S608), a plurality of fans are operated to operate. Ventilation may be performed (S610).

8 is a flowchart illustrating a fourth example of a ventilation method according to an embodiment.

Referring to FIG. 8, the control device may acquire an indoor temperature Ti and an indoor humidity Hi (S800).

The control device can obtain the forecast data for the outdoor temperature (To) from the weather information server (S802). The control device may obtain the outdoor temperature To by receiving the forecast data N hours later from the weather information server.

The controller divides the pre-stored heat transmission rate (Uv) by the difference between the outdoor temperature (To) and the room temperature (Ti) after N hours by the inner wall heat transfer rate (K), and then adds the room temperature (Ti) to the inner wall surface. The surface temperature Ts after N hours can be calculated (S804).

Here, it may be assumed that the room temperature Ti and the room humidity Hi are maintained for N hours. Alternatively, the control unit predicts the change in the room temperature Ti and the room humidity Hi after N hours through learning, and calculates the room temperature Ti and the room humidity Hi when calculating the surface temperature Ts after N hours. The predicted value after N hours can be used.

The controller may calculate the dew point temperature Tc by substituting the indoor temperature Ti and the indoor humidity Hi into the wet air diagram as illustrated in FIG. 7 (S806).

The controller compares the surface temperature Ts and the dew point temperature Tc after N hours (S808), and displays a condensation alarm when the surface temperature Ts is lower than the dew point temperature Tc (YES in S808). Alternatively, the condensation alarm signal may be transmitted to the user terminal (S810). In this case, the controller may display a condensation alarm or transmit a condensation alarm signal together with time information for which condensation is expected. For example, the controller estimates the surface temperature Ts for the next N hours against the outdoor temperature To for the next N hours, and calculates the time when the surface temperature Ts becomes lower than the dew point temperature Tc. For example, the condensation alarm can be displayed along with the estimated condensation time information corresponding to the corresponding time or a condensation alarm signal can be transmitted.

If the condensation is expected according to the comparison of the estimated surface temperature Ts and the dew point temperature Tc, the controller may perform condensation preventive measures (S812). As a condensation preventive measure, for example, the control device may operate a dehumidifier and perform natural ventilation exchanging outdoor air and indoor air.

Some embodiments of the present invention have been described above. According to this embodiment, it is possible to increase the amount of ventilation through the control of the ventilation path and to ventilate the air at the required position. In addition, through this, it is possible to perform indoor air quality improvement operations such as maintaining an appropriate indoor humidity, preventing surface condensation, and improving air quality for fine dust.

The terms "comprise", "comprise" or "having" described above mean that a corresponding component may be included unless specifically stated otherwise, and thus does not exclude other components. It should be construed that it may further include other components. All terms, including technical and scientific terms, have the same meanings as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms commonly used, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be construed in an ideal or excessively formal sense unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

Claims (16)

At least one sensor that senses the characteristics of the indoor air while in contact with the indoor air;
A plurality of fans for introducing outdoor air, for introducing indoor air, or for forming a flow in the indoor air; And
When the indoor air condition value determined according to the measured value of the at least one sensor is above the reference value or exceeds the reference value, at least two or more fans of the plurality of fans are operated, the rotation of the plurality of fans in a non-powered state Determine the flow of outdoor air according to the number and direction of rotation, and determine the first fan and the third fan and the second fan and the fourth fan, which allow the easy inflow of outdoor air, according to the flow of outdoor air. And a control device configured to operate the first fan and the third fan to introduce outdoor air and to operate the second fan and the fourth fan to discharge indoor air.
The first fan and the third fan are located in different places on the same wall surface, the second fan and the fourth fan is located in different places on the same wall surface,
And the control device is operated while alternating the first fan and the third fan and is operated while alternating the second fan and the fourth fan. delete delete delete The method of claim 1,
The control device,
Obtaining the measured values for room temperature and room humidity from the at least one sensor, and operating the at least two fans when the dew point temperature determined according to the room temperature and the room humidity is lower than the surface temperature of the indoor wall; Letting ventilation system. The method of claim 5,
The control device,
A ventilation system for acquiring the outdoor temperature from an outdoor temperature sensor or a meteorological server, dividing the pre-stored heat permeation rate by the difference between the outdoor temperature and the indoor temperature by the inner wall heat transfer rate, and adding the indoor temperature to calculate the surface temperature. . The method of claim 1,
The at least one sensor includes a fine dust sensor,
The control device,
And the at least two fans when the indoor fine dust concentration determined according to the measured value of the fine dust sensor is greater than or equal to the outdoor fine dust concentration obtained from a weather server or exceeds the outdoor fine dust concentration. The method of claim 1,
One fan of the plurality of fans is a kitchen hood fan is installed in the kitchen hood, the kitchen hood fan is ventilated system is operated to outflow the indoor air. The method of claim 1,
And the first fan is a bidirectional fan capable of flowing air in both directions. A ventilation method performed by a control device of a ventilation system,
Obtaining measurements of characteristics of the indoor air from at least one sensor;
Checking an indoor air condition value according to the measured value and comparing the condition value with a reference value;
The flow of the outdoor air is determined according to the rotation speed and the rotation direction of the plurality of fans in the non-powered state, and the first fan, the third fan, and the indoor air can easily flow out according to the flow of the outdoor air. Determining a second fan and a fourth fan; And
Operating the first fan and the third fan to inflow outdoor air and operating the second fan and the fourth fan to outflow indoor air when the state value is greater than or equal to the reference value or exceeds the reference value. Including,
The first fan and the third fan are located in different places on the same wall surface, the second fan and the fourth fan is located in different places on the same wall surface,
And operating the first fan and the third fan while alternately operating the second fan and the fourth fan while alternately operating the second fan and the fourth fan. delete delete delete delete delete delete

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