KR20210088939A - Ventilating apparatus - Google Patents

Abstract

The present invention relates to a ventilation apparatus that can convert and blow a general wind and a low-speed wind with a wind speed lower than that of the general wind. According to the present invention, the ventilation apparatus comprises: a first duct for introducing outdoor air into the indoor; a second duct for discharging indoor air to the outdoors; an exchange unit provided in a region where the first duct and the second duct intersect, and heat exchange between the air flowing through the first duct and the air flowing through the second duct; a first discharge port provided at one end of the first duct and a second discharge port having a smaller discharge area than the first discharge port; and a conversion unit for selectively discharging air introduced into the room through the first duct to one of the first discharge port and the second discharge port.

Description

Ventilation system {VENTILATING APPARATUS}

The present invention relates to a ventilation apparatus for performing ventilation by exchanging indoor air and outdoor air, and more particularly, to a ventilation apparatus capable of blowing air by switching between a normal wind and a low-speed wind with a wind speed lower than this.

The ventilation device or ventilation system refers to a device for ventilating an indoor space in which the ventilation device is installed by discharging indoor air to the outside and sucking outdoor air into the room. The ventilation device includes an exhaust duct for discharging indoor air to the outside and a suction duct for sucking outdoor air into the room, and allows air to flow through the exhaust duct and the suction duct by one or more blower fans. A filter is installed in the exhaust duct or the suction duct of the ventilation device to filter the air discharged to the outside or the air sucked into the room.

The conventional ventilation device is installed by being attached to the ceiling surface or is buried in the ceiling by utilizing the space inside the ceiling. For example, the ventilation device has a structure in which an exhaust duct and a suction duct installed in a space inside the ceiling are branched into several indoor spaces, and air is discharged through the ceiling of each indoor space.

Since the ventilation device of such a structure is installed on the ceiling, in the case of a new building, it can be installed during construction, whereas in the case of an existing building, the ceiling is restored after the ceiling is dismantled and the ventilation device is installed, and the interior is newly renovated. should be added In addition, even when replacing or repairing an existing ventilation system, construction equivalent to the installation of a ventilation system in an existing building is required.

Also, among users who come into contact with the air discharged from the ventilation device in the room, there may be users who feel a cold draft. The cold draft phenomenon refers to a reaction in which a user sensitively senses the coolness of the air when it comes into contact with the blown air. The cold draft phenomenon may occur according to various requirements, such as when a relatively large amount of air is blown, when a blowing speed is fast, when a temperature is low, when a user is sensitive to cold, and the like. In particular, when the outdoor temperature is low, such as in winter, the cold draft detected by the user frequently appears.

In this regard, in response to the cold draft phenomenon, a ventilation device that provides an indoor environment in which a user can live comfortably may be required.

A ventilation device according to an embodiment of the present invention includes a first duct for introducing outdoor air into a room, a second duct for discharging indoor air to the outdoors, and a region where the first duct and the second duct intersect an exchange unit for heat exchange between air flowing through the first duct and air flowing through the second duct, and a first outlet provided at one end of the first duct and a smaller discharge area than the first outlet and a switching unit for selectively discharging air introduced into the room through the first duct to one of the first and second outlets.

In addition, the first duct includes a first flow path for guiding air to flow through the first discharge port, and a second flow path separated from the first flow path and guiding air to flow through the second discharge port, The switching unit may include a blocking film that selectively blocks an air flow to any one of the first flow path and the second flow path.

The switching unit may further include a motor for driving the blocking film to be switched, and a controller for controlling the motor so that the blocking film is positioned in one of the first flow path and the second flow path.

Also, the controller may control the air to be discharged to the second outlet based on the identification that the outdoor temperature is lower than the first preset value.

In addition, the control unit controls the air to be discharged to the second outlet based on it being identified that the outdoor temperature is higher than the first value and the difference between the indoor temperature and the outdoor temperature is lower than a preset second value. can do.

In addition, the exchange unit may be provided to exchange humidity between the air flowing through the first duct and the air flowing through the second duct.

In addition, the exchange unit may include a paper material.

In addition, the second discharge port may be provided above the first discharge port.

In addition, the second outlet may include a plurality of perforations.

In addition, the first discharge port and the second discharge port is provided and may further include a housing having a shape that can be installed on a window in the room.

1 is an exemplary view showing a front view of a ventilation device installed on a window frame.
Figure 2 is a side cross-sectional view schematically showing the internal structure of the ventilation device.
3 is a perspective view schematically showing a state in which the ventilation device is disassembled.
4 is a block diagram of the ventilation system.
5 is an exemplary view showing the state of the switching unit when the ventilation device operates in the general wind mode.
6 is an exemplary view illustrating a state of a switching unit when the ventilation device operates in a low-speed wind mode.
7 is a perspective view of a main part showing a second indoor discharge port;
8 is a perspective view showing the structure of an exchange unit.
9 is a flowchart illustrating a mode switching method of the ventilation device.
10 is an exemplary view showing another structure of the conversion unit.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. The embodiments described with reference to the drawings are not mutually exclusive unless otherwise stated, and a plurality of embodiments may be selectively combined and implemented in one device. A combination of a plurality of these embodiments may be arbitrarily selected and applied by a person skilled in the art in implementing the spirit of the present invention.

If, in the embodiment, there is a term including an ordinal number such as a first component, a second component, etc., these terms are used to describe various components, and the term distinguishes one component from another component. As used herein, these components are not limited in meaning by terms. Terms used in the embodiments are applied to describe the embodiments, and do not limit the spirit of the present invention.

In addition, when the expression “at least one” among a plurality of components in the present specification appears, this expression refers not only to all of the plurality of components, but also each one or these excluding the rest of the plurality of components. refers to any combination of

1 is an exemplary view showing a front view of a ventilation device installed on a window frame.

As shown in FIG. 1 , the ventilation device 1 according to the embodiment of the present invention is provided to be installed in the window 3 , for example. The window 3 is a sliding door type, and is supported so as to slide within the rectangular window frame 5 supported on the wall, thereby opening and closing the opening by the window frame 5 . For example, the window 3 and the window frame 5 may be arranged parallel to the X-Z plane, and the window 3 may be provided to slide along the X direction. This figure shows the state seen by the user from the front of the room where the ventilation device 1 is installed.

In this embodiment, the ventilation device 1 is expressed as being installed in the gap between the window frame 5 and the window 3, but the location where the ventilation device 1 is installed is not limited only in this case. For example, if there is a predetermined opening in the window frame 5 or the wall, it is also possible that the ventilation device 1 is provided in this opening.

In this figure, the X direction is a horizontal direction, and the Z direction is a vertical direction perpendicular to the X direction. Although not shown in this figure, there is a Y direction perpendicular to the X direction and the Z direction, and the air discharged from the ventilation device 1 is discharged toward the Y direction. The directions shown in the following examples are based on this definition.

The ventilation device 1 has a central portion extending along the Z direction, an upper extension portion bent from an upper end of the central portion and extending parallel to the X direction, a lower portion bent from a lower end portion of the central portion and extending parallel to the X direction. The extension can be roughly divided into three areas. However, it is revealed that the division of the central part, the upper extension part, and the lower extension part is only to refer to each area of the ventilation device 1 for convenience. The ventilation device 1 may include a single housing provided to have a shape as shown, or may include a housing provided as an assembly in which each part is detachably assembled.

The ventilation device (1) is installed between the window (3) and the gap between the window frame (5). For example, when the window 3 is slid by a predetermined distance in the -X direction, the space between the right edge of the window 3 and the right region of the window frame 5 is opened by a predetermined width. The ventilation device 1 is installed such that the central portion of the ventilation device 1 is disposed in the open gap. The upper extension of the ventilation device 1 installed in this way is disposed on the upper side of the window 3 , and the lower extension is disposed on the lower side of the window 3 . That is, the ventilation device 1 is installed in such a way that the central part of the ventilation device 1 occupies the space opened by the window 3 .

A first indoor air outlet 10 and a second indoor air outlet 20 for discharging outdoor air into the room, and a first indoor air inlet 30 for sucking indoor air are provided on the front surface of the ventilation device 1 facing the room. do. Also, although not shown, an outdoor inlet for sucking outdoor air and an outdoor outlet for discharging indoor air to the outdoors are provided on the rear surface of the ventilation device 1 facing the outdoors. A connection structure between each of the discharge ports and the suction ports will be described later.

The first indoor outlet 10 and the second indoor outlet 20 are the same in that they are openings for discharging outdoor air, but the first indoor outlet 10 and the second indoor air outlet 10 correspond to the operation mode of the ventilation device 1 . The discharge ports 20 are provided to be used by being switched with each other. For example, in the general wind mode in which the ventilation device 1 blows air into the room at a normal speed, it operates to discharge air through the first indoor discharge port 10, and operates to discharge air at a lower speed than the above-mentioned normal speed. In the low-speed wind mode in which air is blown, air is discharged through the second indoor discharge port 20 . To this end, the first indoor discharge port 10 and the second indoor discharge port 20 are provided to have different structures such as an arrangement shape and an opening shape. Here, the terms general wind and low-speed wind are merely for distinguishing two cases in which the wind speed of the air is different, and it is not intended to limit the technical meaning.

Specifically, the size of the opening of the first indoor outlet 10 is larger than that of the second indoor outlet 20 . Accordingly, the first indoor discharge port 10 may discharge air having a larger air volume than the second indoor discharge port 20 . In addition, the second indoor outlet 20 is disposed at a relatively higher position than the first indoor outlet 10 . For example, the second indoor outlet 20 may be disposed on an upper extension of the ventilation device 1 , and the first indoor outlet 10 may be disposed on a central portion of the ventilation device 1 . The first indoor outlet 10 includes a long slit-shaped opening, while the second indoor outlet 20 includes a mesh or a plurality of perforations. Accordingly, the low-speed wind may be more widely spread through the second indoor discharge port 20 .

Hereinafter, the internal structure of the ventilation device 1 will be described.

Figure 2 is a side cross-sectional view schematically showing the internal structure of the ventilation device.

3 is a perspective view schematically showing a state in which the ventilation device is disassembled.

4 is a block diagram of the ventilation system.

2, 3 and 4, the ventilation device 1 includes a housing 100 for accommodating components to be described later. The housing 100 may be divided into a central portion having a vertically long shape to correspond to a vertically long gap between the window and the window frame, an upper extension portion bent from the upper side of the central portion, and a lower extension portion bent from the lower side of the central portion. . The upper extension part or the lower extension part communicates with the central part, and may be separated from the central part depending on the design method. FIG. 2 schematically shows how the inner structure of the central part of the housing 100 is formed based on what method and principle, and when implemented as an actual product, detailed shapes or ratios of components may be changed. In FIG. 2 , the left side (-Y direction) indicates an outdoor area, and the right side (Y direction) indicates an indoor area. The rear of the housing 100 faces the outdoors, and the front of the housing 100 faces the indoors.

A first indoor discharge port 10 and a second indoor discharge port 20 are provided at the front of the housing 100 , and below the first indoor discharge port 10 and the second indoor discharge port 20 at the front of the housing 100 . The indoor suction port 30 is provided. The second indoor outlet 20 is disposed higher than the first indoor outlet 10 , and the first indoor outlet 10 is disposed higher than the indoor suction port 30 . An outdoor discharge port 40 and an outdoor suction port 50 are provided at the rear of the housing 100 . The outdoor discharge port 40 is disposed higher than the outdoor suction port 50 .

The ventilation device 1 is provided inside the housing 100 and includes a first duct 210 for introducing outdoor air into the room. The first duct 210 connects the outdoor suction port 50 to the first indoor discharge port 10 and the second indoor discharge port 20 , so that outdoor air flowing in through the outdoor suction port 50 is transferred to the first indoor discharge port 10 . ) and the second indoor outlet 20 to guide the outdoor air to be discharged into the room through any one selected.

The ventilation device 1 is provided inside the housing 100 and includes a second duct 220 for discharging indoor air to the outdoors. The second duct 220 connects the indoor air inlet 30 to the outdoor outlet 40, thereby guiding indoor air so that indoor air flowing in through the indoor inlet 30 is discharged to the outdoors through the outdoor outlet 40. .

The ventilation device 1 is provided in a region where the first duct 210 and the second duct 220 intersect within the housing 100 , and the air flowing through the first duct 210 and the second duct 220 are provided. and an exchange unit 300 provided for heat exchange or moisture exchange between flowing air. The exchange unit 300 includes a paper material and has a structure in which the air flowing through the first duct 210 and the air flowing through the second duct 220 do not mix with each other. The structure of the exchange unit 300 and the principles of heat exchange and moisture exchange will be described later.

The ventilation device 1 is provided on the first duct 210 and selectively discharges air flowing through the first duct 210 to one of the first indoor outlet 10 and the second indoor outlet 20 . and a conversion unit 400 . In addition, the ventilation device 1 includes a switching unit motor 410 for operating the switching unit (400). A detailed description of the conversion unit 400 will be described later.

The ventilation device 1 includes a first blowing fan 510 provided on the first duct 210 . The first blowing fan 510 introduces outdoor air into the first duct 210 through the outdoor intake 50, and moves the first duct 210 to the first indoor outlet 10 or the second indoor outlet ( 20) to perform a blow operation so that it is discharged through the In addition, the ventilation device 1 includes a first motor 520 for driving the first blowing fan (510).

The ventilation device 1 includes a second blowing fan 530 provided on the second duct 220 . The second blowing fan 530 performs a blowing operation so that indoor air is introduced into the second duct 220 through the indoor intake 30 , and is discharged through the outdoor outlet 40 by moving the second duct 220 . do. In addition, the ventilation device 1 includes a second motor 540 for driving the second blowing fan (530).

The ventilation device 1 may include various types of sensors 600 installed at various locations inside and outside the ventilation device 1 . As an example of the sensor 600 installed in the outdoor intake port 50, there are a temperature sensor for detecting temperature, a PM10 sensor for detecting dust, a PM2.5 sensor for detecting fine dust, and the like. As an example of the sensor 600 installed in the indoor intake 30, there are a carbon dioxide sensor for detecting carbon dioxide, a PM10 sensor for detecting dust, a PM2.5 sensor for detecting fine dust, and a temperature sensor for detecting temperature. As an example of the sensor 600 installed in the power supply unit of the ventilation device 1, there is a watt-hour meter. At least one of these various types of sensors 600 is installed in the ventilation device 1 , and the detection result of the sensor 600 is transmitted to the control unit 800 to be described later and referred to for controlling the operation of the ventilation device 1 .

The ventilation device 1 may include various types of filters 700 installed in the first duct 210 , the second duct 220 , the indoor inlet 30 , or the outdoor inlet 50 . The filter 700 filters various foreign substances, bacteria, dust, and the like in the air. Examples of the filter 700 include a pre-filter including a mesh, a high-efficiency particulate air (HEPA) filter for filtering particulates in the air, and a sterilization filter for filtering bacteria.

The ventilator 1 includes a control unit 800 that controls the operation of the ventilator 1 . The control unit 800 includes an arithmetic processing circuit including a processor, a microprocessor, a microcontroller, a chipset, and a system-on-chip (SOC). The controller 800 controls the RPM of the first blower fan 510 and the second blower fan 530 by controlling the driving of the first motor 520 and the second motor 540 , and whether or not they operate. For example, the control unit 800 rotates the RPM of the first blowing fan 510 according to a predetermined first value in the normal wind mode, and adjusts the RPM of the first blowing fan 510 in the low-speed wind mode. It rotates according to a predefined second value. Here, the first value is greater than the second value.

In addition, the controller 800 controls the driving of the switching unit motor 410 to determine which side of the first indoor air outlet 10 and the second indoor air outlet 20 the air moving through the first duct 210 is discharged. control Here, the controller 800 may select any one of the first indoor outlet 10 and the second indoor outlet 20 according to various conditions or criteria. The condition or criterion may be based on a user input or a sensor result of the sensor 600 . A detailed description thereof will be given later.

In this embodiment, the control unit 800 is shown to control the operation of the entire ventilation device 1, but depending on the design method, a plurality of control units 800 may be provided to share the control function, respectively.

Hereinafter, the structure and operation form of the switching unit 400 will be described.

5 is an exemplary view showing the state of the switching unit when the ventilation device operates in the general wind mode.

As shown in FIG. 5 , the first duct 210 communicates with the first indoor outlet 10 and the second indoor outlet 20 . According to the movement direction of the air, the first duct 210 may be divided into a front end and a rear end based on the exchange unit 300 (refer to FIG. 2 ). In this embodiment, the rear end of the first duct 210 is shown.

The first duct 210 includes a first flow path 211 for guiding air to flow through the first indoor discharge port 10 , and is isolated from the first flow path 211 to allow air to flow through the second indoor discharge port 20 . It branches into a second flow path 212 for guiding. That is, if the movement of air into either the first flow path 211 or the second flow path 212 is not blocked by the switching unit 400 , the air moving through the first duct 210 is discharged through the first indoor outlet. It will be discharged through both (10) and the second indoor discharge port (20).

The switching unit 400 includes a blocking film 420 provided to selectively block an air flow to any one of the first flow path 211 and the second flow path 212 . The blocking film 420 has one end coupled to the blocking film rotation shaft 430 , and rotates between the first position P1 and the second position P2 according to the rotation of the blocking film rotation shaft 430 . The blocking film rotating shaft 430 rotates by the driving force of the switching unit motor (410, see FIG. 4) by being coupled to the switching unit motor (410, see FIG. 4). The first position P1 is a position where the blocking film 420 opens the first flow path 211 and blocks the second flow path 212 . The second position P2 is a position where the blocking film 420 blocks the first flow path 211 and opens the second flow path 212 . This figure shows a case in which the blocking film 420 is at the first position P1.

When the blocking film 420 is at the first position P1, air moving through the first duct 210 may enter the first flow path 211, while the second flow path 212 due to the blocking film 420. cannot enter Accordingly, air may be discharged through the first indoor discharge port 10 , but is not discharged through the second indoor discharge port 20 .

The control unit 800 (refer to FIG. 4 ) controls the blocking film 420 to be in the first position P1 when the ventilation device operates in the general wind mode. Accordingly, air having a normal wind speed is discharged through the first indoor discharge port 10 . The general wind has a higher wind speed than the low-speed wind, and is applied when quick ventilation of the room is required. For example, when the indoor temperature is relatively high compared to the outdoor air or when the indoor air is relatively turbid, rapid ventilation of the indoor space is required. Accordingly, the ventilation device operates in the normal wind mode, so that the general wind is discharged through the first indoor discharge port 10 having a relatively large size.

6 is an exemplary view illustrating a state of a switching unit when the ventilation device operates in a low-speed wind mode.

As shown in FIG. 6 , the first duct 210 communicates with the first indoor outlet 10 and the second indoor outlet 20 . The first duct 210 includes a first flow path 211 for guiding air to flow through the first indoor discharge port 10 , and is isolated from the first flow path 211 to allow air to flow through the second indoor discharge port 20 . It branches into a second flow path 212 for guiding.

One end of the blocking film 420 of the switching unit 400 is coupled to the blocking film rotation shaft 430 , and rotates between the first position P1 and the second position P2 according to the rotation of the blocking film rotation shaft 430 . This figure shows a case in which the blocking film 420 is at the second position P2. When the blocking film 420 is at the second position P2 , air moving through the first duct 210 may enter the second flow path 212 , while the blocking film 420 causes the first flow path 211 . cannot enter Accordingly, air may be discharged through the second indoor discharge port 20 , but is not discharged through the first indoor discharge port 10 .

The control unit 800 (refer to FIG. 4 ) controls the blocking film 420 to be in the second position P2 when the ventilation device operates in the low-speed wind mode. Accordingly, air having a wind speed slower than that of the general wind is discharged through the second indoor discharge port 20 . The low-speed wind is slower than the general wind, and it is applied when it is necessary to suppress the cold draft phenomenon rather than the rapid ventilation of the room. For example, there are various situations in which the user may feel the cold draft phenomenon sensitively, such as when the user feels the outdoor air to be cold or the user is sleeping.

In this case, the ventilation device operates in the low-speed wind mode, so that the general wind is discharged through the second indoor air outlet 20 having a relatively small size. The second indoor discharge port 20 may have a structure for spreading the discharged air more widely, and this embodiment will be described below.

7 is a perspective view of a main part of a second indoor discharge port;

As shown in FIG. 7 , the second indoor discharge port 20 includes a plurality of perforations 21 penetrating through the housing 100 . The perforated hole 21 may have a circular shape so that air is smoothly discharged, and in addition to this, it may have a polygonal shape of various shapes. The plurality of perforations 21 have the same size and shape in order to facilitate manufacturing and to facilitate air diffusion. In addition, in the case of following the same direction, the spacing between the two adjacent perforations 21 may all be provided to be the same.

Since the second indoor outlet 20 includes a plurality of perforations 21 , the second indoor outlet 20 allows the discharged air to be more diffused. The air discharged through the second indoor discharge port 20 is a low-speed wind rather than a normal wind. The reason the ventilation device operates in the low-speed mode is to suppress a cold draft phenomenon. For this reason, the second indoor discharge port 20 disperses and discharges the air through the plurality of perforations 21 so as to spread the discharged air as wide as possible.

Depending on the design method, when following the same direction, the interval between the two adjacent perforations 21 may be provided differently. For example, when the plurality of perforations 21 are distributed along one direction along the first duct 10 in the housing 100 (see FIG. 3 ), the distribution of the perforations 21 on the downstream side of the air in the first duct may be denser than the distribution of the perforations 21 on the upstream side of the air. That is, the distribution of the perforations 21 becomes denser toward the end of the first duct in the direction in which the air moves. This means that the distance between the adjacent two perforations 21 is smaller in the case of the downstream side of the air than the case at the upstream side of the air.

Since the air moving the first duct moves downstream while being discharged through the perforations 21 disposed on the upstream side, the interval between the two adjacent perforations 21 is irrespective of the area in which the plurality of perforations 21 are arranged. If it is the same, the amount of air discharged from the perforated hole 21 on the upstream side becomes larger than that on the downstream side. If this difference is not negligible, the interval between the adjacent two perforations 21 is made different for each area (that is, by making the distribution of the perforations 21 different for each area), the amount of air discharged for each area can also be matched similarly.

In addition, the second indoor discharge port 20 is provided at a higher position than the first indoor discharge port 20 (refer to FIG. 3 ). This is to allow the low-speed wind discharged through the second indoor discharge port 20 to spread more widely in the indoor space. This is because, if the position of the second indoor discharge port 20 is relatively low, the air with a low velocity does not spread widely in the room and only reaches the vicinity of the ventilation device.

Hereinafter, the structure of the exchange unit will be described.

8 is a perspective view showing the structure of an exchange unit.

As shown in FIG. 8 , the exchange unit 300 has an overall hexahedral shape, and is disposed in a region where the first duct 210 (see FIG. 2 ) and the second duct 220 (see FIG. 2 ) intersect. Here, the exchange unit 300 is provided so that the air flowing through the first duct 210 does not mix with the air flowing through the second duct 220 while communicating with the first duct and the second duct, respectively.

The exchange unit 300 includes a pair of covers 310 having a rectangular plate shape. Components of the exchange unit 300 to be described below are interposed between a pair of covers 310 . When the exchange unit 300 is installed in the housing 100 (refer to FIG. 2 ), the cover 310 is disposed so that its plate surface is parallel to the direction in which air moves in the housing. The cover 310 may include various materials to protect and support the components of the exchange unit 300 , for example, paper, plastic, or the like.

The exchange unit 300 includes a plurality of liners 320 stacked at regular intervals. The liner 320 is a rectangular plate made of paper or fiber material, and is laminated between a pair of covers 310 . The plurality of liners 320 are disposed parallel to the cover 310 .

The exchange unit 300 is disposed in the space between the plurality of liners 320 and includes a spacer 330 supporting the two liners 320 so as to form a space between the two adjacent liners 320 . include The spacer 330 includes a paper or fiber material. The spacer 330 alternately contacts the two liners 320 in a zigzag form in the space between the two adjacent liners 320 .

Assuming that one flow path layer 301 , 302 is formed by two adjacent liners 320 and a spacer 330 supporting between the two liners 320 , the exchange unit 300 may include these flow path layers 301 . , 302) is implemented by stacking several. Here, the flow path layers 301 and 302 are not stacked to face only one flow path direction, but flow path layers 301 and 302 having two different flow path directions are alternately stacked. For example, in the exchange unit 300 of this figure, six channel layers 301 and 302 are stacked, and the first channel layer 301 having a first exchange sub-channel 340 facing the first direction; , it is implemented by alternately stacking second flow passage layers 302 having second exchange floating passages facing a second direction different from the first direction (for example, orthogonal to the first direction).

Due to this structure, the first exchange passage 340 and the second exchange passage 350 are separated with the liner 320 interposed therebetween. The first floating exchange passage 340 communicates with the first duct 210 (refer to FIG. 2), and the second floating passage 350 communicates with the second duct 220 (see FIG. 2). That is, the outdoor air entering the first duct passes through the exchange unit 300 and moves along the first duct again, and the indoor air entering the second duct passes through the exchange unit 300 and moves along the second duct again. do.

The liner 320 includes a paper or fiber material, and the material of the liner 320 is provided to absorb and release heat and moisture. Due to the characteristics of the liner 320 , in the exchange unit 300 , the exchange of heat and moisture between the air flow moving the first exchange floating channel 340 and the air flow moving the second exchange floating channel 350 is performed. Occurs. For example, the liner 320 absorbs heat and moisture from the air moving through the first exchange floating passage 340 , and releases the absorbed heat and moisture to the air moving through the second exchange floating passage 350 . do.

According to such a structure, the ventilation device can adjust the temperature and humidity of the room to some extent without using a separate refrigerant.

In the previous embodiment, the configuration in which the ventilation device discharges the normal wind through the first indoor air outlet in the normal wind mode and discharges the low-speed air through the second indoor air outlet in the low-speed wind mode has been described. It may be according to a user input as to whether the ventilation device operates in the normal wind mode and the low-speed wind mode, but it may be provided to automatically switch the mode when a predefined condition is satisfied. Hereinafter, such an embodiment will be described.

9 is a flowchart illustrating a mode switching method of the ventilation device.

9, the following operation is performed by the control unit of the ventilation device.

In step 910, the ventilation device measures the temperature at the current time.

In step 920, the ventilation device identifies whether the indoor temperature is higher than the outdoor temperature.

If it is identified that the indoor temperature is higher than the outdoor temperature (No in step 920), the ventilation device stops blowing in step 930. Alternatively, the ventilation device may operate in a predefined blowing mode.

On the other hand, if it is identified that the indoor temperature is not higher than the outdoor temperature (Yes in step 920), the ventilator identifies whether the outdoor temperature is higher than a predefined first threshold in step 940.

If it is identified that the outdoor temperature is not higher than the first threshold (No in step 940), the ventilation device operates in a low-speed wind mode in step 950. The ventilation device discharges the low-speed wind through the second indoor air outlet in the low-speed wind mode.

On the other hand, if it is identified that the outdoor temperature is higher than the first threshold (Yes in step 940), the ventilation device identifies whether the difference between the indoor temperature and the outdoor temperature is lower than a predefined second threshold in step 960.

If it is identified that the difference between the indoor temperature and the outdoor temperature is not lower than the second threshold value (No in step 960), the ventilator operates in the low-speed wind mode by moving to step 950.

On the other hand, if it is identified that the difference between the indoor temperature and the outdoor temperature is lower than the second threshold (Yes in step 960), the ventilation device operates in the general wind mode in step 970. The ventilation device allows the general wind to be discharged through the first indoor air outlet in the normal wind mode.

On the other hand, the control unit of the ventilation device is at least a part of data analysis, processing, and result information generation for selectively performing an operation of switching between the normal wind mode and the low speed wind mode based on the measurement result of the indoor temperature and the outdoor temperature as described above. may be performed using at least one of machine learning, a neural network, or a deep learning algorithm as a rule-based or artificial intelligence algorithm.

For example, the control unit of the ventilation device may perform the functions of the learning unit and the recognition unit together. The learning unit may perform a function of generating a learned neural network, and the recognition unit may perform a function of recognizing (or inferring, predicting, estimating, and judging) data using the learned neural network. The learning unit may generate or update the neural network. The learning unit may acquire learning data to generate a neural network. As an example, the learning unit may acquire the learning data from the storage unit or the outside of the ventilation device. The learning data may be data used for learning of the neural network, and the neural network may be trained by using the data obtained by performing the above-described operation as learning data.

The learning unit may perform a preprocessing operation on the acquired training data before training the neural network using the training data, or may select data to be used for learning from among a plurality of training data. For example, the learning unit may process the learning data into a preset format, filter it, or add/remove noise to process the learning data into a form suitable for learning. The learner may generate a neural network set to perform the above-described operation by using the preprocessed learning data.

The learned neural network network may be composed of a plurality of neural network networks (or layers). Nodes of the plurality of neural networks have weights, and the plurality of neural networks may be connected to each other so that an output value of one neural network is used as an input value of another neural network. Examples of neural networks include Convolutional Neural Network (CNN), Deep Neural Network (DNN), Recurrent Neural Network (RNN), Restricted Boltzmann Machine (RBM), Deep Belief Network (DBN), Bidirectional Recurrent Deep Neural Network (BRDNN) and It can include models such as Deep Q-Networks.

Meanwhile, the recognizer may acquire target data to perform the above-described operation. The target data may be obtained from the storage unit or the outside of the ventilation device. The target data may be data to be recognized by the neural network. The recognizer may perform preprocessing on the acquired target data before applying the target data to the learned neural network, or select data to be used for recognition from among a plurality of target data. For example, the recognition unit may process the target data into a preset format, filter, or add/remove noise to process the target data into a form suitable for recognition. The recognizer may obtain an output value output from the neural network by applying the preprocessed target data to the neural network. The recognition unit may obtain a probability value or a reliability value together with the output value.

The ventilator can adaptively perform the same operation as the present embodiment by using the AI algorithm or AI model as described above to the user through a method such as learning. Specifically, the first threshold value and the second threshold value are not only simply set with a default value set in the manufacturing step or a specific value updated by the management server, but also a user who uses the ventilation device or the use of the ventilation device It can be changed in real time according to the output value of the AI algorithm that reflects the history. For example, the above thresholds may be adjusted according to the age and gender of the user registered in the ventilation device. In the case of cold draft, since women can usually detect more sensitively than men and the elderly compared to young people, the weight applied to the AI model is adjusted according to the user's personal information, and consequently, the threshold output from the AI model The value is adjusted.

Alternatively, the weight applied to the AI model may be adjusted in response to a set value (temperature, air flow rate, dehumidification, etc.) input by the user through a user input interface such as a remote controller of the ventilation device. That is, if the user responds more sensitively to temperature and airflow, the values input by the user to the ventilation device will show a different pattern from the normal case, and the ventilation device will display the user input values or the history of the user input values for a predetermined period of time. is reflected in the AI model, so that the AI model can derive threshold values reflecting the user's characteristics.

The ventilation device may adjust the threshold values through learning of the user's input value in relation to the temperature value of the indoor temperature or the outdoor temperature detected by the sensor. For example, the ventilation device may be configured to allow a user to switch between a normal wind mode (the first indoor air outlet is open and the second indoor air outlet is closed) and a low-speed wind mode (the first indoor air outlet is closed and the second indoor air outlet is open). Threshold values optimized for the user can be derived by measuring the temperature values of the indoor and outdoor temperatures at the time of inputting the command, and learning the relationship between the measured temperature values and the user's mode switching command through the AI model. .

Alternatively, in relation to the temperature value of the outdoor temperature sensed by the sensor, the ventilator learns the relation between the command for the user to switch between the normal wind mode and the low-speed wind mode, so that the first related to the transition to the low-speed wind mode is performed. The threshold value may be derived as a value optimized for the user.

As described above, the ventilation device according to the present embodiment can provide a more optimized use environment to the user by using the AI algorithm in various ways.

Meanwhile, in the previous embodiment, the case of selectively opening and closing the first flow path or the second flow path by rotating the blocking film of the switching unit has been described. However, the structure of the conversion unit is not limited thereto, and various design changes are possible. Hereinafter, such an embodiment will be described.

10 is an exemplary view showing another structure of the conversion unit.

As shown in FIG. 10 , the first duct 1010 communicates with the first indoor discharge port 1020 and the second indoor discharge port 1030 . The first duct 1010 includes a first flow path 1011 for guiding air to flow to the first indoor discharge port 1020 , and is isolated from the first flow path 1011 to allow air to flow through the second indoor discharge port 1030 . It branches to a second flow path 1012 for guiding.

The switching unit 1040 includes a blocking film 1041 provided to selectively block an air flow to any one of the first flow passage 1011 and the second flow passage 1012 . The blocking film 1041 is movably supported by the blocking film support frame 1042 installed in a branching region that branches from the first duct 1010 to the first passage 1011 and the second passage 1012 . The blocking film support frame 1042 has, for example, a structure similar to that of a window frame, and may have a structure for supporting the edges of the blocking film 1041 so that the blocking film 1041 does not come off when the blocking film 1041 slides. The blocking film 1041 moves in a straight line between the first position P1 and the second position P2 along the blocking film support frame 1042 . The first position P1 is a position where the blocking film 1041 opens the first flow path 1011 and blocks the second flow path 1012 . The second position P2 is a position where the blocking film 1041 blocks the first flow path 1011 and opens the second flow path 1012 .

When the blocking film 1041 is at the first position P1, air moving through the first duct 1010 can enter the first passage 1011, while the second passage 1012 due to the blocking film 1041. cannot enter Accordingly, air may be discharged through the first indoor discharge port 1020 , but is not discharged through the second indoor discharge port 1030 .

When the blocking film 1041 is in the second position P2, air moving through the first duct 1010 can enter the second passage 1012, while the first passage 1011 due to the blocking film 1041. cannot enter Accordingly, air may be discharged through the second indoor discharge port 1030 , but is not discharged through the first indoor discharge port 1020 .

1: Ventilation device
10: first indoor discharge port
20: second indoor discharge port
210: first duct
400: transition part
800: control unit

Claims (10)

In the ventilation system,
a first duct for introducing outdoor air into the indoor;
a second duct for discharging indoor air to the outdoors;
an exchange unit provided in a region where the first duct and the second duct intersect and heat exchange between the air flowing through the first duct and the air flowing through the second duct;
a first discharge port provided at one end of the first duct and a second discharge port having a smaller discharge area than the first discharge port;
and a switching unit for selectively discharging air introduced into the room through the first duct to one of the first outlet and the second outlet. According to claim 1,
The first duct is
a first flow path for guiding air to flow through the first outlet;
and a second flow path that is isolated from the first flow path and guides air to flow through the second outlet;
The switching unit, the ventilation device including a blocking film for selectively blocking the air flow to any one of the first flow path and the second flow path. 3. The method of claim 2,
The conversion unit,
a motor driving the blocking film to be switched;
Ventilation apparatus further comprising a control unit for controlling the motor so that the blocking film is located in any one of the first flow path and the second flow path. 4. The method of claim 3,
The control unit may be configured to control the air to be discharged to the second outlet based on the identification that the outdoor temperature is lower than a preset first value. 5. The method of claim 4,
The control unit, based on the determination that the outdoor temperature is higher than the first value, and the difference between the indoor temperature and the outdoor temperature is lower than a preset second value, ventilation to control the air to be discharged to the second outlet Device. According to claim 1,
In the exchange unit, a ventilation device provided to exchange humidity between the air flowing through the first duct and the air flowing through the second duct. 7. The method of claim 6,
The exchange unit is a ventilation device comprising a paper material. According to claim 1,
The second outlet is a ventilation device provided above the first outlet. According to claim 1,
The second outlet is a ventilation device including a plurality of perforations. According to claim 1,
The ventilation device further comprising a housing provided with the first outlet and the second outlet and having a shape that can be installed on a window in the room.

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