KR102362051B1 - Air cleaning apparatus having pet mode and a method controlling the same - Google Patents

Abstract

The present invention relates to an air purifier, and the air purifier according to an embodiment of the present invention includes a comprehensive cleanliness sensor unit for detecting the overall cleanliness of indoor air, a carbon dioxide sensor unit for detecting carbon dioxide in the indoor air, and a blowing fan and an air cleaning unit including a filter member and a control unit for controlling the operation of the air cleaning unit based on the detection results of the comprehensive cleanliness sensor unit and the carbon dioxide sensor unit. The control unit may control to adjust the air volume of the air cleaning unit according to a change in the carbon dioxide concentration detected by the carbon dioxide sensor unit. Accordingly, when the user performs ventilation, it is possible to provide a more active and smart air cleaning function by actively strengthening air cleaning.

Description

Air purifier and its control method {AIR CLEANING APPARATUS HAVING PET MODE AND A METHOD CONTROLLING THE SAME}

The present invention relates to an air purifier and a control method therefor, and more particularly, to an air purifier capable of inducing ventilation by sensing carbon dioxide in a room, and determining whether ventilation is being performed to actively control air cleaning, and a control method therefor is about

An air purifier refers to a device that inhales polluted air in a room, performs a purification action such as removing pollutants in the inhaled air, and discharges the purified air. In general, an air purifier may select an air purifying function or automatically perform an air purifying function according to a user's control or according to the degree of pollutants distributed in the inhaled air.

As a conventional air purifier, there is Korean Patent No. 10-1828936 (2018.02.07). In Korea Patent No. 10-1828936 (2018.02.07), a fan provided in a plurality of air cleaning modules or a circulation fan provided in a flow control device is selectively driven based on the operation mode or the pollution level detected by the sensor device. The amount of air discharged to the air purifier is determined.

These air purifiers provide functions such as filtering fine molecules such as dust in the air and deodorizing them based on the filter.

However, in the case of such a conventional air purifier, since carbon dioxide cannot be filtered, there is a limitation in that it cannot provide a detection function for carbon dioxide and the like. On the other hand, users have inherent demands for overall cleaning and management of indoor air including carbon dioxide for air purifiers.

Korean Patent No. 10-1828936

The present invention was created to improve the above problems, by determining whether to ventilate according to the amount of change of carbon dioxide and adjusting the air volume of the air purifier accordingly, and by actively strengthening air cleaning when the user performs ventilation. An object of the present invention is to provide an air purifier capable of providing an active and smart air cleaning function and a control method thereof.

In addition, an object of the present invention is to provide an air purifier capable of providing an indoor management function for carbon dioxide and a control method thereof by sensing carbon dioxide and inducing ventilation to a user when carbon dioxide is sensed indoors for a certain amount or more. .

Another object of the present invention is to provide an air purifier capable of providing ventilation information to a user through various user interfaces by providing a notification of ventilation induction to a user terminal through a display or wireless communication, and a method for controlling the same. .

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the appended claims.

In order to achieve the above object, an air purifier according to an embodiment of the present invention is an air purifier that is located indoors and provides air purification by sensing indoor air, and is a comprehensive detection of the overall cleanliness of indoor air. A cleanliness sensor unit, a carbon dioxide sensor unit for detecting carbon dioxide in the indoor air, an air cleaning unit including a blowing fan and a filter member, and the overall cleanliness sensor unit and the carbon dioxide sensor unit based on the detection results of the air cleaning unit It may include a control unit for controlling the operation. The control unit may control to adjust the air volume of the air cleaning unit according to a change in the carbon dioxide concentration detected by the carbon dioxide sensor unit.

When a change is sensed in a direction in which the carbon dioxide concentration detected by the carbon dioxide sensor unit decreases, the control unit may control the air volume of the air cleaner to increase.

The control unit calculates the carbon dioxide concentration by using the carbon dioxide detection information detected by the carbon dioxide sensor at every predetermined unit time, and controls to increase the air volume of the air cleaner when the calculated carbon dioxide concentration continues to decrease for a predetermined time can do.

The control unit may control to increase the air volume of the air cleaning unit when the increase amount of the dust concentration detected by the comprehensive cleanliness sensor unit exceeds a preset threshold amount.

The controller may compare the first carbon dioxide concentration at the first time point with the second carbon dioxide concentration at the second time point to determine the degree of increase in the air volume of the air purifier.

The air purifier may further include a circulator having a circulation fan. When a change is sensed in a direction in which the carbon dioxide concentration detected by the carbon dioxide sensor unit decreases, the controller may control the air volume of the circulator to increase.

The control unit may control the air cleaning unit to give a grade to the indoor air according to the indoor air condition sensed by the comprehensive cleanliness sensor unit, and to operate with an air volume set according to the indoor air level. .

The control unit may include, when a change is sensed in a direction in which the carbon dioxide concentration detected by the carbon dioxide sensor unit decreases while the air cleaning unit operates at a first air volume set according to the class for the indoor air, the increase is greater than the first air volume. The air purifier may be controlled to operate at a second air volume.

The controller may set the increase amount of the second air volume to correspond to the decrease amount of the carbon dioxide concentration.

The control unit may control to provide a ventilation request to the user when the carbon dioxide concentration detected by the carbon dioxide sensor unit corresponds to the ventilation standard.

The control unit compares the first carbon dioxide concentration at the first time point with the second carbon dioxide concentration at the second time point, and when the second carbon dioxide concentration decreases by a certain amount or more than the first carbon dioxide concentration, providing the ventilation request You can control it to stop.

The air purifier may further include a display unit for displaying at least one of the overall cleanliness of the indoor air, an operating state of the air purifier, and an operating state of the circulator. The display unit may include a ventilation request display activated by the control unit when the first carbon dioxide concentration detected by the carbon dioxide sensor unit at a first time corresponds to the ventilation standard.

An air purifier according to an embodiment of the present invention is an air purifier that is located indoors and provides air purification by sensing indoor air. It may include a carbon dioxide sensor unit for sensing, an air cleaning unit including a blower fan and a filter member, and a control unit for controlling the operation of the air cleaning unit based on the detection result of the comprehensive cleanliness sensor unit and the carbon dioxide sensor unit . The control unit, when the carbon dioxide concentration detected by the carbon dioxide sensor unit corresponds to the ventilation standard, may control to provide a ventilation request to the user.

The air purifier may further include a display unit for displaying at least one of the overall cleanliness of the indoor air, an operating state of the air purifier, and an operating state of the circulator. The display unit may include a ventilation request display activated by the control unit when the carbon dioxide concentration detected by the carbon dioxide sensor unit corresponds to the ventilation standard.

The air purifier may further include a communication unit capable of wirelessly connecting to the user terminal. The control unit may control the communication unit to transmit a message for the ventilation request to the user terminal when the carbon dioxide concentration detected by the carbon dioxide sensor unit corresponds to the ventilation standard.

The control method of an air purifier according to an embodiment of the present invention is a control method of an air purifier that is positioned indoors and provides air purification by sensing indoor air, the method comprising the steps of: detecting the overall cleanliness of indoor air; It may include the steps of detecting carbon dioxide in the air, controlling the operation of the air purifier according to the sensed overall cleanliness, and controlling the air volume of the air purifying unit to be adjusted according to a change in the carbon dioxide concentration.

The controlling of the operation of the air cleaning unit may include assigning a grade to the indoor air according to the indoor air condition sensed by the comprehensive cleanliness sensor unit, and a first air volume set according to the indoor air grade. It may include the step of controlling to operate as

The step of controlling the air purifier to adjust the air volume may include: detecting a change in the carbon dioxide concentration; and when a change is detected in a direction in which the carbon dioxide decreases, increasing the first air volume and setting the second air volume. may include

The controlling to adjust the air flow rate of the air cleaning unit includes: detecting an increase in the dust concentration detected by the comprehensive cleanliness sensor unit; and setting it to the second air volume.

The controlling of the air purifier to adjust the air volume may include setting an increase amount of the second air volume in response to the reduction amount of the carbon dioxide.

The control method of the air purifier may further include controlling to provide a ventilation request to the user when the carbon dioxide concentration detected by the carbon dioxide sensor corresponds to a preset ventilation standard.

As described above, according to the air purifier and its control method according to the present invention, by determining whether to ventilate according to the amount of change in carbon dioxide and adjusting the air volume of the air purifier accordingly, when the user performs ventilation, the user actively purifies the air. It has the effect of providing a more active and smart air cleaning function by strengthening the

In addition, there is an effect of providing an indoor management function for carbon dioxide by detecting carbon dioxide and inducing ventilation to the user when carbon dioxide is sensed indoors for a certain amount or more.

In addition, by providing a notification about ventilation induction to the user terminal through a display or wireless communication, there is an effect that ventilation information can be provided to the user through various user interfaces.

1 is a view showing an air purifier according to an embodiment of the present invention.
2 is a cross-sectional view of an air purifier according to an embodiment of the present invention.
3 is a block diagram illustrating the configuration of an air purifier according to an embodiment of the present invention.
4 is a diagram illustrating an example of a display unit and an input unit in the air purifier according to an embodiment of the present invention.
5 is a block diagram illustrating an embodiment of the comprehensive cleanliness sensor unit shown in FIG. 3 .
6 is a block diagram illustrating an embodiment of the control unit shown in FIG. 3 .
7 is a view for explaining an example of a control method of an air purifier according to an embodiment of the present invention.
8 is a view for explaining another example of a control method of an air purifier according to an embodiment of the present invention.
9 is a view for explaining an embodiment of the step of detecting carbon dioxide in the control method of the air purifier.
10 is a view for explaining an embodiment of the step of notifying the ventilation induction in the control method of the air purifier.
11 is a view for explaining an embodiment of the step of determining whether to perform ventilation in the control method of the air purifier.
12 is a view for explaining another embodiment of the step of determining whether to perform ventilation in the control method of the air purifier.

The above-described objects, features and advantages will be described below in detail with reference to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. This is not intended to limit the present invention to specific embodiments, and should be construed to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the present invention, terms such as first, second, etc. may be used to describe various components, but the components may not be limited by the terms. The terms are only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

The term “and/or” may include a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but other components may exist in between. can be understood On the other hand, when an element is referred to as being “directly connected” or “directly connected” to another element, it may be understood that the other element does not exist in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Also, the singular expression used herein may include the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and one or more other features It may be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, may 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 a commonly used dictionary may be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, it is interpreted in an ideal or excessively formal meaning. it may not be

In addition, the following embodiments are provided to more completely explain to those with average knowledge in the art, and shapes and sizes of elements in the drawings may be exaggerated for clearer explanation.

1 is a view showing an air purifier according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the air purifier according to an embodiment of the present invention, and FIG. 3 is a view showing the configuration of the air purifier according to an embodiment of the present invention It is a drawing.

1 to 3, the air purifier 10 according to an embodiment of the present invention includes an air purifier generating an air flow and a circulator 300 for changing the discharge direction of the air flow generated by the air purifying unit. includes

Hereinafter, the air cleaning unit will be described as including the first air cleaning module 100 and the second air cleaning module 200, but is not limited thereto.

The first air cleaning module 100 and the second air cleaning module 200 may be arranged in a vertical direction.

For example, the first air cleaning module 100 may be placed on the floor, and the second air cleaning module 200 may be disposed above the first air cleaning module 100 . In this case, the first air purifying module 100 generates a first air flow, and the first air flow forms a flow for sucking indoor air existing on the lower side of the air purifier 10 . The second air purifying module 200 generates a second air flow, and the second air flow forms a flow for sucking indoor air existing at the upper side of the air purifier 10 .

In addition, the air purifier 10 may include a blowing fan for discharging the introduced air upward.

The blowing fan may include a first blowing fan 140 and a second blowing fan 240 . The first blowing fan 140 may be provided in the first air cleaning module 100 , and the second blowing fan 240 may be provided in the second air cleaning module 200 .

The air purifier 10 includes a case that forms an external appearance.

The case may include a first case 110 forming an exterior of the first air cleaning module 100 and a second case 210 forming an exterior of the second air cleaning module 200 .

The first case 110 has a cylindrical shape, and the upper portion of the first case 110 may be formed to have a smaller diameter than the lower portion. That is, the first case 110 may have a conical shape with a cut end.

The second case 210 may also be formed in a shape similar to that of the first case 110 . For the second case 210, the description of the first case 110 is referred to.

The case is formed with a suction unit formed so that air is sucked.

For example, in the first case 110 , a first suction unit 115 through which air is sucked is formed. The first suction unit 115 may include a plurality of through-holes formed through at least a portion of the first case 110 . A plurality of through-holes may be uniformly formed in the circumferential direction along the outer circumferential surface of the first case 110 so that air can be sucked in any direction with respect to the first case 110 . That is, air may be sucked in a 360 degree direction based on the center line in the vertical direction passing through the inner center of the first case 110 . Air sucked through the first suction unit 115 may flow in a radial direction from the outer circumferential surface of the first case 110 .

In the second case 210 , a second suction unit 215 through which air is sucked may be formed. For a detailed description, the description of the first suction unit 115 is referred to.

The first air cleaning module 100 includes a first filter member 120 . The first filter member 120 may have a filter surface for filtering air on the outside. The air passing through the first suction unit 115 including a plurality of through-holes may pass through the filter surface of the first filter member 120 and be introduced into the first filter member 120 to be filtered. That is, air may be introduced through the filter surface of the first filter member 120 , and in the process of passing through the first filter member 120 in this way, impurities such as fine dust in the air are filtered out.

The first filter member 120 may be detachably mounted.

The first filter member 120 may be configured in various ways, such as a chemical filter and a physical filter. For example, it may include at least one of a deodorizing filter, an antibacterial filter, a High Efficiency Particulate Air (HEPA) filter, an Ultra-Low Penetration Air (ULPA) filter, an activated carbon filter, an electrostatic precipitator, and a visible light catalyst filter.

The first air cleaning module 100 may include a first fan housing 130 installed on the outlet side of the first filter member 120 . A space in which the first blowing fan 140 is accommodated is formed in the first fan housing 130 .

The first blowing fan 140 may include a centrifugal fan that introduces air in an axial direction and discharges air upward in a radial direction. A first blowing fan motor 145 is coupled to the upper side of the first blowing fan 140 so that rotational force may be applied thereto.

The second air cleaning module 200 may also include a second filter member 220 , a second fan housing 230 , and a second blowing fan 240 .

The second filter member 220 may have an open top. Air may be introduced into the second filter member 220 through the filter surface provided on the outside of the second filter member 220 , and may be discharged through the open top of the second filter member 220 . The configuration of the second filter member 220 may also be used for the first filter member 120 .

A second filter member 220 may be detachably mounted on the second air cleaning module 200 . In the process of passing through the second filter member 220 , impurities such as fine dust in the air may be filtered out.

The second air cleaning module 200 may further include a second fan housing 230 installed on the outlet side of the second filter member 220 . A space in which the second blowing fan 240 is accommodated is formed in the second fan housing 230 . The second blowing fan 240 includes a centrifugal fan that introduces air in an axial direction and discharges air upward in a radial direction. The second blowing fan 240 is coupled to the first blowing fan motor 245 on the upper side, and rotational force is applied thereto.

The circulator 300 may be installed above the second air cleaning module 200 . The air flow path of the second air cleaning module 200 may communicate with the air flow path of the circulator 300 . That is, the air that has passed through the second air cleaning module 200 may pass through the air flow path of the circulator 300 and be discharged to the outside through the discharge unit 320 . The discharge unit 320 may be formed at the upper end of the circulator 300 .

The circulator 300 may include a third fan housing 310 in which the circulation fan 330 is accommodated. For example, the third fan housing 310 may have a substantially annular shape.

The circulation fan 330 may include an axial fan. For example, the circulation fan 330 may be operated to discharge the air introduced in the axial direction in the axial direction. That is, the air flowing upward from the second blowing fan 260 toward the circulation fan 330 is discharged from the circulation fan 330 through the discharge unit 320 located above the circulation fan 330 . can be discharged outside. A circulation fan motor 335 is coupled to the lower side of the circulation fan 330 to apply rotational force.

The circulator 300 may be provided to be movable. In detail, the circulator 300 is provided with the position conversion unit 340 in a lying state (first position), or may be in an inclined state (second position). For example, the position converting unit 340 may lift a part of the annular third fan housing 310 upward through rotation of a gear including a motor and a gear (not shown).

The circulator 300 may be provided with a rotating unit 350 to rotate in the left and right directions. Here, "rotation in the left and right direction" may mean rotation in a clockwise or counterclockwise direction based on the vertical direction. For example, the rotation unit 350 may rotate the third fan housing 310 in the left and right directions including the rotation shaft and the motor.

A discharge grill 325 forming a discharge unit 320 through which air passing through the circulation fan 330 is discharged may be provided on the upper side of the third fan housing 310 . In addition, a display unit 400 for displaying operation information of the air purifier 10 may be provided in the central portion of the discharge grill 325 . In this case, the display unit 400 may move together with the circulator 300 .

Meanwhile, FIG. 4 shows an example of the display unit 400 and the input unit 500 of the air purifier 10 according to an embodiment of the present invention.

The display unit 400 is provided in the center of the discharge grill 325 of the circulator 300 to display the air cleanliness of the indoor air, the operating status of the air cleaning units 100 and 200 and the operating status of the circulator 300 , etc. can do. The display unit 400 includes a display panel 410 and a ventilation request display 440 .

The display panel 410 displays information on the air cleanliness of the indoor air including the fine dust concentration 430 or the presence of odors on the display, the first blowing fan 160 and the second blowing fan 260 and the circulator ( The operating state of the circulation fan 330 of 300 may be displayed. In addition, as in the present embodiment, when the first air cleaning unit 100 and the second air cleaning unit 200 are configured in two stages as in the present embodiment, the air cleaning units 100 and 200 are operated in one or both of them. You can indicate if you are doing it. In addition, it is possible to display whether the circulator 300 is in a lying state (first position) or an inclined state (second position), and it can also display whether it is rotating in the left and right directions.

Also, whether the sleep reservation 520 is set may be displayed on the display panel 410 . And in the present invention, a ventilation request display 440 may be disposed on the display panel 410 .

Ventilation request display 440 is activated by the control unit 900 when the carbon dioxide concentration detected by the carbon dioxide comprehensive cleanliness sensor unit 600 corresponds to a preset ventilation standard, thereby providing a user with ventilation because there is too much carbon dioxide in the indoor air. can indicate the need for

The input unit 500 may be disposed in the display panel 410 and is configured to input an operation command to operate the air cleaning modules 100 and 200 , the circulator 300 and the display unit 400 . At this time, the operation command includes an operation mode command for entering the operation mode.

In the present invention, the input unit 500 may include a sleep reservation button 520 , a driving mode button 530 , a blower fan control button 540 , a circulation fan control button 550 , and a power button 560 .

The user may press the power button 540 to turn off and turn on the power of the air purifier 10 .

When the user presses the bedtime reservation button 520 , a bedtime reservation can be made to turn off the power of the air purifier 10 after the input predetermined time has elapsed.

The user may select a driving mode by pressing the driving mode button 530 . That is, when the operation mode button 530 is pressed, the first blowing fan 160 , the second blowing fan 260 and the circulation fan 330 can be rotated at a preset rotation speed (rpm), and the circulator 300 . You can control the movement and left-right rotation. For example, the user may select an auto mode, a circulation clean mode, a dual clean mode, or a single clean mode by pressing the driving mode button 530 .

The user can directly control the air volume of the first blowing fan 140 or the second blowing fan 240 by pressing the blowing fan control button 540, and pressing the circulation fan control button 550 to You can control the airflow directly.

On the other hand, in the present embodiment, the input unit 500 is configured in the form of a button, but is not limited thereto, and includes all of various input methods in which the user can input an operation command by touching or pressing, and additionally commands with voice. It is also possible to input an operation command wirelessly through a remote control or the like.

The overall cleanliness sensor unit 600 may detect the overall cleanliness of the indoor air. The comprehensive cleanliness sensor unit 600 may detect dust detection information (eg, fine dust concentration, ultra-fine dust concentration, etc.) and odor generation of indoor air, and such dust detection information and odor detection information are combined Can be used to set the cleanliness level.

5 is a block diagram illustrating an embodiment of the comprehensive cleanliness sensor unit shown in FIG. 3 . Referring further to FIG. 5 , the comprehensive cleanliness sensor unit 600 includes a dust sensor 610 and an odor sensor 620 . ) may be included. The dust sensor 610 detects dust in the indoor air, for example, detects a fine dust concentration and an ultra-fine dust concentration, and generates dust detection information using these, and provides it to the controller 900 . The odor sensor 620 detects an odor of the indoor air, for example, detects an amount of gas, and generates odor information using this, and provides the odor information to the controller 900 .

The comprehensive cleanliness sensor unit 600 may be installed in the first air cleaning module 100 and/or the second air cleaning module 200 .

The carbon dioxide sensor unit 700 may detect carbon dioxide in the indoor air. For example, the carbon dioxide sensor unit 700 may detect the concentration of carbon dioxide in the indoor air, and may generate carbon dioxide detection information by using it, and provide it to the controller 900 .

For example, the carbon dioxide sensing information may be a voltage signal. The carbon dioxide sensor unit 700 may detect carbon dioxide and provide a voltage signal having a voltage level corresponding to the sensed carbon dioxide concentration to the controller 900 .

The carbon dioxide sensor unit 700 may be installed in the first air cleaning module 100 and/or the second air cleaning module 200 .

The control unit 800 may calculate the concentration of carbon dioxide in the indoor air by using the voltage signal provided from the carbon dioxide sensor unit 700 .

The control unit 800 controls the air volume of the first blowing fan 160 , the second blowing fan 260 , and the circulation fan 330 according to the operation command input from the input unit 500 , and the movement of the circulator 300 . and left-right rotation can be controlled.

The control unit 800 may receive an operation command from the input unit 500 , receive indoor air condition information from the comprehensive cleanliness sensor unit 600 , and the first blower fan motor 145 and the second blower fan motor 245 , a control command may be transmitted to the circulation fan motor 335 , the position converting unit 340 , and the rotating unit 350 .

The control unit 800 may control the operation of the air cleaning unit based on the detection results of the comprehensive cleanliness sensor unit 600 and the carbon dioxide sensor unit 600 .

In the control unit 800 , the overall cleanliness level according to the condition of the indoor air (fine dust concentration, ultrafine dust concentration, amount of gas, etc.) is set. For example, the control unit 800 uses the dust detection information and odor detection information measured by the comprehensive cleanliness sensor unit 600 to determine indoor air quality of 'good', 'normal', 'bad' and 'very bad'. It can be graded in 4 stages.

In the control unit 800, the rotational speed (rpm) of the first blowing fan 160, the second blowing fan 260, and the circulation fan 330 is preset for each step, and the circulator 300 according to each step. Whether to move and rotate left and right can be set. The control unit 800 may provide an air volume level to each of the first blowing fan 160 , the second blowing fan 260 , and the circulation fan 330 . For example, according to the order in which the air volume is increased, air volume stages such as 'weak wind', 'medium wind', 'strong wind', and 'turbo' may be given, and the first blowing fan 160, the second blowing at each stage The rotation speed (rpm) of the fan 260 and the circulation fan 330 may be set.

When the auto mode is input from the input unit 500 , the control unit 800 controls the first air purification module 100 and the second air according to the overall cleanliness level of the indoor air measured through the general cleanliness sensor unit 600 . The cleaning module 200 and the circulator 300 may be operated. That is, when the auto mode is activated, the control unit 800 may set the overall cleanliness level based on the dust detection information and the gas detection information detected by the comprehensive cleanliness sensor unit 600 . The control unit 800 may operate the first blowing fan 160 , the second blowing fan 260 , and the circulation fan 330 at a preset air volume level corresponding to the overall cleanliness level. For example, when the overall cleanliness grade is 'good', the first blowing fan 160, the second blowing fan 260 and the circulation fan 330 may be operated in the 'weak wind' stage, and the overall cleanliness degree If the grade is 'normal', the first blower fan 160 is in the 'medium wind' stage, if the overall cleanliness rating is 'bad', the 'strong wind' stage, and if the overall cleanliness rating is 'very bad', the 'turbo' stage. The second blowing fan 260 and the circulation fan 330 may be operated.

The controller 800 may control the movement and left-right rotation of the circulator 300 corresponding to the overall cleanliness level. For example, when the overall cleanliness level is 'good' or 'normal', the control unit 800 does not rotate left and right (fixed) while the circulator 300 is in a lying state (first position), indoors When the air rating is 'bad', the circulator 300 is erected inclined (second position) and does not rotate in the left and right directions, and when the overall cleanliness rating is 'very bad', the circulator 300 is inclined It can be operated to rotate in the left and right directions while remaining (second position).

On the other hand, when an operation mode other than the auto mode is operated, the control unit 800 controls the first blowing fan 160, the second blowing fan 260 and the circulation fan at a rotation speed (rpm) preset according to each operation mode. By rotating 330 , it is possible to control the movement and left-right rotation of the circulator 300 . At this time, the user can directly control the air volume level of the first blowing fan 160 , the second blowing fan 260 or the circulation fan 330 through the input unit 500 , and the movement and left and right sides of the circulator 300 . Directional rotation can be directly controlled.

The control unit 800 may control to adjust the air volume of the air cleaner according to a change in the carbon dioxide concentration detected by the carbon dioxide sensor unit 700 .

When the carbon dioxide concentration detected by the carbon dioxide sensor unit 700 corresponds to the ventilation standard, the control unit 800 may control to provide a ventilation request to the user.

In one embodiment, the control unit 800 calculates a carbon dioxide concentration by using the carbon dioxide detection information detected by the carbon dioxide sensor unit 700, and sets the carbon dioxide state as 'good', 'normal', or 'bad' according to the calculated carbon dioxide concentration. It can be set to 4 levels of ' and 'Very bad'. The controller 800 may set the 'very bad' stage as the ventilation standard, and may notify the user to induce ventilation when the carbon dioxide state is the 'very bad' stage.

For example, the control unit 800 may induce ventilation to the user by activating the ventilation request display 440 of the display unit 400 . In addition, the controller 800 may control to provide a sound notification such as a beep sound or a voice notification to the user.

For example, the control unit 800 may control to transmit a message for a ventilation request to the user terminal through the communication unit 800 .

When the concentration of carbon dioxide decreases after inducing ventilation, the control unit 800 may determine that ventilation has been performed and stop the ventilation induction notification.

For example, the control unit 800 compares the first carbon dioxide concentration calculated at the first time point with the second carbon dioxide concentration calculated at the second time point, and when the second carbon dioxide concentration decreases by more than a certain amount than the first carbon dioxide concentration, You can control it to stop serving.

When a change is detected in a direction in which the carbon dioxide concentration detected by the carbon dioxide sensor unit 700 decreases, the control unit 800 may control the air volume of the air cleaning unit to increase.

This is because the amount of carbon dioxide does not decrease or increase by the air purifier, so the decrease in the concentration (concentration) of carbon dioxide in the indoor air is caused by external factors other than the air purifier, that is, outside the room where the concentration of carbon dioxide is lower than that of the indoor air. This applies when air is introduced. Accordingly, when a change is detected in a direction in which the carbon dioxide concentration detected by the carbon dioxide sensor unit 700 decreases, the control unit 800 may determine that ventilation is being performed.

On the other hand, when ventilation is performed, since external air is introduced instead of the current indoor air, the introduced external air contains pollutants such as dust and odors, unlike indoor air. In particular, when the air purifier is operating indoors or has performed an initial operation, the outdoor air has a higher degree of pollution than the indoor air. Accordingly, when it is determined that ventilation is made, the control unit 800 may more strongly increase the intensity of air cleaning.

After all, since the decrease in the concentration (concentration) of carbon dioxide in the air is due to ventilation in which external air is introduced, the control unit 800 detects a change in the direction in which the carbon dioxide concentration detected by the carbon dioxide sensor unit 700 decreases. It can be controlled to increase the air volume of the air cleaner.

In an embodiment, the control unit 800 may calculate the carbon dioxide concentration by using the carbon dioxide detection information detected by the carbon dioxide sensor unit 700 every predetermined unit time. When the calculated carbon dioxide concentration continuously falls for a predetermined time, the controller 800 determines that ventilation has been performed and controls the intensity of air cleaning to increase.

For example, the carbon dioxide sensor unit 700 generates 256 pieces of carbon dioxide detection information for 2 seconds and provides them to the control unit 800, and the control unit 800 calculates the carbon dioxide concentration using the 256 pieces of carbon dioxide detection information sensed for 2 seconds. can The control unit 800 may determine that ventilation has been performed when the ten carbon dioxide concentrations calculated for 20 seconds have a continuous downward trend. If the decreasing carbon dioxide concentration increases, the controller 800 may determine whether the change in the carbon dioxide concentration decreases again based on the increased time point.

In the above, an example of determining whether to ventilate using an increase in the concentration of carbon dioxide has been described.

Meanwhile, in an embodiment, the controller 800 may determine whether to ventilate based on the increase in the dust concentration. For example, the control unit 800 may determine that ventilation has been performed when the increase in the dust concentration detected by the comprehensive cleanliness sensor unit 600 exceeds a preset threshold amount. This is because the dust concentration of outdoor air is higher than that of indoor air on which air cleaning has been performed, and thus, when ventilation is performed, the dust height temporarily increases. The control unit 800 may increase the air volume of the air cleaning unit when the dust concentration increases by exceeding the threshold amount.

In one embodiment, the control unit 800 detects the dust concentration through the comprehensive cleanliness sensor unit 600 at every predetermined time interval, and when the increase in the dust concentration calculated for each time interval exceeds a threshold amount, it is determined that ventilation has been performed. and can increase the air volume of the air cleaner.

When it is determined that ventilation has been performed, the controller 800 may control the air amount of the air cleaner to increase. Alternatively, when it is determined that ventilation has been performed, the controller 800 may control the air volume of the circulator to increase.

In one embodiment, when it is determined that ventilation has been performed, the controller 800 may control the air cleaning unit to increase the air volume operated by the overall cleanliness by one step.

For example, if the overall cleanliness grade is 'good', the control unit 800 goes to the 'weak wind' step, if the overall cleanliness grade is 'normal', it goes to the 'middle wind' step, and if the overall cleanliness grade is 'bad' If the 'strong wind' stage and the overall cleanliness rating is 'very bad', the air cleaner can be operated in the 'turbo' stage. Here, if it is determined that ventilation is being performed, the control unit 800 improves the 'weak wind' stage to the 'medium wind' stage when the overall cleanliness level is 'good', and when the overall cleanliness level is 'normal' In this case, the 'middle wind' level is improved to the 'strong wind' level, the 'strong wind' level is improved to the 'turbo' level if the overall cleanliness level is 'bad', and the 'turbo' level if the overall cleanliness level is 'very bad'. The air cleaner can be activated by maintaining or upgrading to a more powerful rating than the turbo stage.

In an embodiment, the controller 800 may set an increase amount of the air flow according to the decrease amount of carbon dioxide. That is, the controller 800 may compare the carbon dioxide concentration calculated at the first time point with the second carbon dioxide concentration calculated at the second time point to determine the degree of increase in the air volume of the air purifier.

For example, the controller 800 may set the carbon dioxide state to four levels of 'good', 'normal', 'bad', and 'very bad' according to the calculated concentration of carbon dioxide. When the state of carbon dioxide is changed by one stage, for example, when the state of carbon dioxide is changed from 'very bad' to 'bad', the control unit 800 may control the air volume to increase by one stage. When the state of carbon dioxide is changed by two steps, for example, when the state of carbon dioxide is changed from 'very bad' to 'normal', the controller 800 may control to increase the air volume by two steps. This is because a large change in the concentration of carbon dioxide is equivalent to a large inflow of external air, so that the air cleaning function is performed more strongly.

6 is a block diagram illustrating an embodiment of the control unit shown in FIG. 3 . An embodiment of the control unit 800 will be described with reference to FIG. 6 .

The control unit 800 may include a general cleanliness setting unit 910 , a ventilation setting unit 920 , and an air volume control unit 930 .

The overall cleanliness setting unit 910 may set the overall cleanliness of the indoor air based on the dust detection information and the odor detection information sensed by the comprehensive cleanliness sensor unit 600 .

The dust detection information may include a fine dust concentration and an ultra-fine dust concentration, and the general cleanliness setting unit 910 may set a general cleanliness level using the dust sensing information. For example, the general cleanliness setting unit 910 is 'good' when the fine dust concentration is 0 μg/m 3 or more and 30 μg/m 3 or less, 'normal' when the fine dust concentration is 31 μg/m 3 or more and 80 μg/m 3 or less, and 81 μg A grade of 'bad' can be given when it is /m3 or more and 150 μg/m3 or less, and 'very bad' when it is 151 μg/m3 or more. 'Good', 16 ㎍/㎥ or more and 35 ㎍/㎥ or less, 'Normal', 36 ㎍/㎥ or more and 75 ㎍/㎥ or less, 'bad', and 76 ㎍/㎥ or more, 'very bad' can be given

The comprehensive cleanliness setting unit 910 may set the overall cleanliness level based on the dust detection information, and then re-evaluate the overall cleanliness level using the odor detection information. That is, when the smell is detected over a certain level, the overall cleanliness level can be improved based on the dust detection information.

The overall cleanliness setting unit 910 may provide the set overall cleanliness level to the ventilation setting unit 920 and the air volume control unit 930 .

When the carbon dioxide concentration detected by the carbon dioxide sensor unit 700 corresponds to the ventilation standard, the ventilation setting unit 920 may control to provide a ventilation request to the user.

In one embodiment, the ventilation setting unit 920 calculates the carbon dioxide concentration using the carbon dioxide detection information detected by the carbon dioxide sensor unit 700, and sets the carbon dioxide state according to the calculated carbon dioxide concentration to 'good', 'normal', It can be set to 4 levels of 'bad' and 'very bad'. The ventilation setting unit 920 may set the 'very bad' stage as the ventilation standard, and may notify the user to induce ventilation when the carbon dioxide state is the 'very bad' stage.

The ventilation setting unit 920 may provide a step for the carbon dioxide concentration to the airflow control unit 930 .

As an example, the ventilation setting unit 920 may induce ventilation to the user by activating the ventilation request display 440 of the display unit 400 . In addition, the ventilation setting unit 920 may control to provide a sound notification such as a beep sound or a voice notification to the user.

As an example, the ventilation setting unit 920 may control to transmit a message for a ventilation request to the user terminal through the communication unit 800 .

The air volume control unit 930 may control the air volume of the air cleaning unit.

The air volume control unit 930 may control the air volume of the air cleanliness unit based on the overall cleanliness level provided by the comprehensive cleanliness setting unit 910 .

For example, the air volume control unit 930 is set to a 'weak wind' stage when the overall cleanliness level is 'good', and to a 'medium wind' stage when the overall cleanliness level is 'normal', and the overall cleanliness level is 'bad'. If this is the 'strong wind' stage, if the overall cleanliness level is 'very bad', the air cleaner can be operated in the 'turbo' stage.

The ventilation setting unit 920 may determine whether ventilation is being performed based on the change in the carbon dioxide concentration, and when it is determined that ventilation is performed, may request the airflow control unit 930 to increase the air volume.

When a change is detected in a direction in which the carbon dioxide concentration detected by the carbon dioxide sensor unit 700 decreases, the ventilation setting unit 920 may request the airflow control unit 930 to increase the air volume of the air cleaning unit.

In one embodiment, the ventilation setting unit 920 may calculate the carbon dioxide concentration by using the carbon dioxide detection information detected by the carbon dioxide sensor unit 700 every predetermined unit time. The ventilation setting unit 920 may determine that ventilation has been performed when the calculated carbon dioxide concentration for a certain period of time continuously falls.

The ventilation setting unit 920 may determine whether to ventilate based on the increase in the dust concentration. When the increase in the dust concentration detected by the comprehensive cleanliness sensor unit 600 exceeds a preset threshold amount, the ventilation setting unit 920 may determine that ventilation has been performed.

In one embodiment, the ventilation setting unit 920 detects the dust concentration through the comprehensive cleanliness sensor unit 600 at every predetermined time interval, and when the increase in the dust concentration calculated for each time interval exceeds a threshold amount, ventilation is performed. It is judged that it is done, and the air volume of the air cleaning unit can be increased.

As an example, the threshold amount for determining whether to ventilate may be a preset value.

As another example, the threshold amount may be calculated from the ventilation setting unit 920 based on the dust concentration detected for a plurality of time intervals. For example, the ventilation setting unit 920 may calculate an increase amount based on the detected dust concentration at every time interval, and set an average value of the increase amount for a predetermined time (eg, 12 hours, etc.) as a threshold amount. Here, if necessary, a case having an increase that greatly exceeds the average is determined as ventilation, and this case may not be reflected in calculating the average.

Although the above-described example has been described based on the average value, various methods such as a median value or a deviation may be applied in addition to this.

In an embodiment, the air volume control unit 930 may set an increase amount of the air volume according to the decrease amount of carbon dioxide.

For example, when the state of carbon dioxide is improved by one step, for example, when the state of carbon dioxide is changed from 'very bad' to 'bad', the air volume controller 930 may control the air volume to increase by one step. When the state of carbon dioxide is changed by two steps, for example, when the state of the carbon dioxide is changed from 'very bad' to 'normal', the air volume controller 930 may control to increase the air volume by two steps.

In one embodiment, when it is determined that ventilation has been performed, the air volume control unit 930 may control the air cleaning unit to increase the air volume operated by the overall cleanliness by one step.

For example, if it is determined that ventilation is being performed, the airflow control unit 930 improves the 'weak wind' stage to the 'medium wind' stage when the overall cleanliness level is 'good', and when the overall cleanliness level is 'normal' The 'strong wind' level is improved to the 'strong wind' level, the 'strong wind' level is improved to the 'turbo' level if the overall cleanliness level is 'bad', and the 'turbo' level if the overall cleanliness level is 'very bad'. The air cleaner can be activated by maintaining or upgrading to a more powerful rating than the turbo stage.

In the above, various embodiments of the air purifier according to an embodiment of the present invention have been described with reference to FIGS. 1 to 6 .

Hereinafter, a method for controlling an air purifier according to an embodiment of the present invention will be described with reference to FIGS. 7 to 11 . However, since the control method of the air purifier to be described below is performed by the control unit of the air purifier described above with reference to FIGS. 1 to 6 , it can be more easily understood with reference to the description described above with reference to FIGS. 1 to 6 . .

7 is a view for explaining an example of a control method of an air purifier according to an embodiment of the present invention. 7 is a control method for a case in which ventilation occurs while operating with an air cleaning function.

Referring to FIG. 7 , the controller 900 may detect the overall cleanliness of the indoor air, and control the operation of the air cleaner according to the sensed overall cleanliness ( S710 ).

Also, the controller 900 may detect carbon dioxide in the indoor air (S720).

The controller 900 may provide a notification for ventilation induction based on the detected level (concentration) of carbon dioxide (S730).

The controller 900 may control to adjust the air volume of the air purifier according to a change in the carbon dioxide concentration. That is, the controller 900 may determine whether ventilation is performed based on a change in the level (concentration) of carbon dioxide (S740). If it is determined that ventilation has been performed, the controller 900 may control to enhance the current intensity of air cleaning (S750).

In one embodiment, the control unit 900 may give a grade to the indoor air according to the indoor air condition sensed by the comprehensive cleanliness sensor unit 600, and to operate with an air volume set according to the grade for the indoor air. can be controlled Thereafter, when a change is sensed in a direction in which the carbon dioxide decreases, the controller 900 may increase the air volume set according to the indoor air level and set the air volume as the air volume. Here, the control unit 900 may set the increase amount of the air volume in response to the decrease amount of carbon dioxide.

8 is a view for explaining another example of a control method of an air purifier according to an embodiment of the present invention. 8 is a control method for a case in which ventilation occurs while the air cleaning function is idle.

Referring to FIG. 8 , the controller 900 may detect carbon dioxide in the indoor air ( S810 ).

The controller 900 may provide a notification for ventilation induction based on the detected level (concentration) of carbon dioxide (S820).

The controller 900 may control to adjust the air volume of the air purifier according to a change in the carbon dioxide concentration. That is, the controller 900 may determine whether ventilation is performed based on a change in the level (concentration) of carbon dioxide (S830). When it is determined that ventilation has been performed, the controller 900 detects the overall cleanliness of the indoor air, determines the intensity of air cleaning according to the sensed overall cleanliness, and further strengthens the determined intensity of cleanliness. Thus, it is possible to control to perform air cleaning (S840).

9 is a view for explaining an embodiment of the step of detecting carbon dioxide in the control method of the air purifier.

Referring to FIG. 9 , the carbon dioxide sensor unit 700 may continuously sense carbon dioxide and provide a voltage signal to the controller 800 in response to the sensed value.

The control unit 800 may calculate the carbon dioxide concentration by using the carbon dioxide detection information detected by the carbon dioxide sensor unit 700 every predetermined unit time.

When a predetermined unit time elapses (S920, Yes), the control unit 800 calculates the average of the voltage values detected during the unit time (930), and calculates the carbon dioxide level (concentration) corresponding to the average voltage value to calculate carbon dioxide The concentration may be calculated ( S940 ).

10 is a view for explaining an embodiment of the step of notifying the ventilation induction in the control method of the air purifier.

Referring to FIG. 10 , when the calculated carbon dioxide level (concentration) corresponds to a preset threshold value (ventilation standard) (S1010, Yes), the controller 800 activates the ventilation request display 440 It can be controlled to do so (S1020). In addition, the controller 800 may control to provide a sound notification such as a beep sound or a voice notification to the user.

In addition, the control unit 800 may control to transmit a message for a ventilation request to the user terminal through the communication unit 800 (S1030).

11 is a view for explaining an embodiment of the step of determining whether to perform ventilation in the control method of the air purifier. An embodiment shown in FIG. 11 relates to an embodiment of determining whether to ventilate using an increase in carbon dioxide.

Referring to FIG. 11 , the control unit 800 may calculate the carbon dioxide concentration (level) by using the carbon dioxide detection information detected by the carbon dioxide sensor unit 700 every predetermined first unit time ( S1110 ).

When a second unit time longer than the first unit time elapses (S1120, YES), the controller 800 determines whether the carbon dioxide concentration calculated for the second unit time continues to decrease (S1130, YES). When the carbon dioxide concentration continuously falls for the second unit time, the controller 800 may determine that ventilation has been performed (S1140).

For example, the controller 800 may calculate the carbon dioxide concentration using 256 pieces of carbon dioxide sensing information sensed for 2 seconds as the first unit time. The control unit 800 may determine that ventilation has been performed when the 10 carbon dioxide concentrations calculated for 20 seconds as the second unit time have a continuous downward trend.

If the concentration (level) of carbon dioxide does not continuously decrease for the second unit time (S1130, NO), the process repeats from step S1110.

12 is a view for explaining another embodiment of the step of determining whether to perform ventilation in the control method of the air purifier. An embodiment illustrated in FIG. 12 relates to an embodiment of determining whether to ventilate using an increase in the dust concentration.

Referring to FIG. 12 , the control unit 800 may check the dust concentration by using the dust detection information detected by the general cleanliness sensor unit 600 every predetermined unit time ( S1210 ). When the increase in the dust concentration exceeds the threshold amount (S1220, Yes), the controller 800 may determine that ventilation has been performed (S1230). If the increase in the dust concentration is equal to or less than the threshold amount (S120, NO), step S1110 is repeated.

Although the present invention has been described in detail through specific examples, it is intended to describe the present invention in detail, and the present invention is not limited thereto. It is clear that the transformation or improvement is possible by the ruler.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

10: air purifier
100: first air cleaning module
110: first case 120: first filter member
130: first fan housing 140: first blowing fan
200: second air cleaning module
210: second case 220: second filter member
230: second fan housing 240: second blowing fan
300: circulator
310: third fan housing 320: discharge part
330: circulation fan
400: display unit
420: ventilation request display
500: input
600: general cleanliness sensor unit
610: dust sensor 620: odor sensor
700: carbon dioxide sensor unit
800: communication department
900: control unit
910: general cleanliness setting unit 920: ventilation setting unit
930: air volume control unit

Claims (22)

An air purifier that is located indoors and provides air purification by sensing indoor air, comprising:
A comprehensive cleanliness sensor unit for detecting the overall cleanliness of the indoor air;
a carbon dioxide sensor for detecting carbon dioxide in the indoor air;
an air cleaning unit including a blowing fan and a filter member; and
a control unit for controlling the operation of the air cleaning unit based on the detection result of the comprehensive cleanliness sensor unit and the carbon dioxide sensor unit;
including,
the control unit
When it is determined that ventilation has been performed according to the change in the carbon dioxide concentration detected by the carbon dioxide sensor unit, each air volume level corresponding to each overall cleanliness level is increased,
After the ventilation is performed, the air volume of the air purifying unit increases than the air volume of the air purifying unit before the ventilation is performed.
According to claim 1, wherein the control unit
When a change is detected in a direction in which the carbon dioxide concentration detected by the carbon dioxide sensor unit decreases, the air purifier increases each air flow level corresponding to each overall cleanliness level.
According to claim 1, wherein the control unit
At every predetermined unit time, the carbon dioxide concentration is calculated using the carbon dioxide detection information detected by the carbon dioxide sensor unit, and when the calculated carbon dioxide concentration continues to fall for a certain period of time, each air flow level corresponding to each comprehensive cleanliness level is performed. increasing air purifier.
According to claim 1, wherein the control unit
An air purifier that increases each air flow level corresponding to each overall cleanliness level when the increase amount of the dust concentration detected by the comprehensive cleanliness sensor unit exceeds a preset threshold amount.
According to claim 1, wherein the control unit
An air purifier that compares a first carbon dioxide concentration at a first time point with a second carbon dioxide concentration at a second time point, and determines the degree of increase in each air flow level corresponding to each overall cleanliness level.
The method of claim 1, wherein the air purifier
a circulator having a circulation fan;
further comprising,
the control unit
When a change is detected in a direction in which the carbon dioxide concentration detected by the carbon dioxide sensor unit decreases, the air purifier increases the air flow level of the circulator corresponding to each overall cleanliness level.
According to claim 1, wherein the control unit
The overall cleanliness level is given to the indoor air according to the indoor air condition sensed by the comprehensive cleanliness sensor unit, and the air cleaning unit is controlled to operate at the air volume level set according to the overall cleanliness level for the indoor air. an air purifier.
The method of claim 7, wherein the control unit
When a change is detected in a direction in which the carbon dioxide concentration detected by the carbon dioxide sensor decreases while the air purifying unit operates in the first air flow level set according to the grade for the indoor air, the second air volume is increased compared to the first air volume level An air purifier for controlling the air purifier to operate at the air volume level.
The method of claim 8, wherein the control unit
and the amount of increase in the second air flow step is set to correspond to the decrease in the concentration of carbon dioxide.
According to claim 1, wherein the control unit
When the carbon dioxide concentration detected by the carbon dioxide sensor unit corresponds to the ventilation standard, an air purifier for controlling to provide a ventilation request to the user.
11. The method of claim 10, wherein the control unit
Comparing the first carbon dioxide concentration at the first time point and the second carbon dioxide concentration at the second time point, when the second carbon dioxide concentration decreases by a certain amount or more than the first carbon dioxide concentration, control to stop the provision of the ventilation request an air purifier.
11. The method of claim 10, wherein the control unit
The carbon dioxide concentration is calculated using the carbon dioxide detection information detected by the carbon dioxide sensor unit, and the carbon dioxide state is set to four levels of 'good', 'normal', 'bad', and 'very bad' according to the calculated carbon dioxide concentration. ,
The ventilation standard is an air purifier corresponding to the 'very bad' stage.
The method of claim 1, wherein the air purifier
a display unit for displaying at least one of a general cleanliness degree of indoor air, an operating state of the air cleaning unit, and an operating state of the circulator;
further comprising,
the display unit
a ventilation request display activated by the control unit when the first carbon dioxide concentration detected by the carbon dioxide sensor unit at a first time corresponds to the ventilation standard;
An air purifier comprising a.
An air purifier that is located indoors and provides air purification by sensing indoor air, comprising:
A comprehensive cleanliness sensor unit for detecting the overall cleanliness of the indoor air;
a carbon dioxide sensor for detecting carbon dioxide in the indoor air;
an air cleaning unit including a blowing fan and a filter member; and
a control unit for controlling the operation of the air cleaning unit based on the detection result of the comprehensive cleanliness sensor unit and the carbon dioxide sensor unit;
including,
the control unit
When the carbon dioxide concentration detected by the carbon dioxide sensor unit corresponds to the ventilation standard, control is provided to provide a ventilation request to the user, and when it is determined that ventilation has been performed, each air volume level corresponding to each overall cleanliness level is increased, and ,
After the ventilation is performed, the air volume of the air purifying unit increases than the air volume of the air purifying unit before the ventilation is performed.
15. The method of claim 14, wherein the air purifier
a display unit for displaying at least one of a general cleanliness degree of indoor air, an operating state of the air cleaning unit, and an operating state of the circulator;
further comprising,
the display unit
a ventilation request display activated by the control unit when the carbon dioxide concentration detected by the carbon dioxide sensor unit corresponds to the ventilation standard;
An air purifier comprising a.
15. The method of claim 14, wherein the air purifier
a communication unit capable of wirelessly connecting to the user terminal;
further comprising,
the control unit
When the carbon dioxide concentration detected by the carbon dioxide sensor unit corresponds to the ventilation standard, the air purifier for controlling the communication unit to transmit a message for the ventilation request to the user terminal.
As a control method of an air purifier that is located indoors and provides air purification by sensing indoor air, the control method comprising:
Sensing the overall cleanliness of the indoor air;
detecting carbon dioxide in the indoor air;
controlling the operation of the air cleaning unit according to the sensed overall cleanliness level; and
When it is determined that ventilation has been performed according to the change in the carbon dioxide concentration, increasing each air volume level corresponding to each overall cleanliness level;
After the ventilation is performed, the air volume of the air purifier is increased than that of the air purifier before the ventilation is performed.
The method of claim 17, wherein the controlling the operation of the air cleaning unit comprises:
assigning a comprehensive cleanliness level to the indoor air according to the indoor air condition sensed by the comprehensive cleanliness sensor unit; and
controlling the indoor air to operate at a first air volume level set according to the overall cleanliness level;
A control method of an air purifier comprising a.
The method of claim 18, wherein the step of increasing each air volume level corresponding to each of the overall cleanliness level comprises:
detecting a change in the carbon dioxide concentration; and
setting the first air volume step as a second air volume step by increasing the first air volume step when a change in the direction in which the carbon dioxide decreases is detected;
A control method of an air purifier comprising a.
The method of claim 18, wherein the step of increasing each air volume level corresponding to each of the overall cleanliness level comprises:
detecting an increase in the dust concentration detected by the comprehensive cleanliness sensor unit; and
setting the first air volume step as a second air volume step by increasing the first air volume step when the increase amount of the dust concentration exceeds a preset threshold amount;
A control method of an air purifier comprising a.
The method of claim 19, wherein the step of increasing each air volume level corresponding to each of the overall cleanliness level comprises:
setting an increase amount of the second air volume step in response to the decrease amount of the carbon dioxide;
A control method of an air purifier comprising a.
18. The method of claim 17,
when the carbon dioxide concentration detected by the carbon dioxide sensor unit corresponds to a preset ventilation standard, controlling to provide a ventilation request to the user;
Control method of the air purifier further comprising a.

Images