KR100745984B1 - Method for purifying air with moving - Google Patents

Abstract

A method of cleaning air while moving.

An apparatus for cleaning air while moving according to an embodiment of the present invention, the air cleaning device to obtain a characteristic of the pollutant contained in the ambient air of the air cleaning device, setting the direction of movement according to the characteristic of the pollutant And moving to the set direction.

Air purifier, movement, odor detection, wall detection

Description

{Method for purifying air with moving}

1 is a view showing an air cleaning device according to an embodiment of the present invention.

Figure 2 is an exemplary view showing the configuration of the moving part of the air cleaning apparatus according to an embodiment of the present invention.

3 is a flow chart of the air cleaning device according to an embodiment of the present invention to move along the wall.

Figure 4 is a flow chart for cleaning the air by moving the air cleaning device detects the contamination according to an embodiment of the present invention.

5 is an exemplary view illustrating an odor detection and processing process for detecting and moving an odor according to an embodiment of the present invention.

Figure 6 is a block diagram showing the components of the air cleaning apparatus according to an embodiment of the present invention.

7 is a flowchart illustrating a process of performing air cleaning by the air cleaning apparatus according to an embodiment of the present invention.

8 is an indoor view for examining the clean effect according to the conventional fixed air cleaning method.

9 is an indoor view to look at the clean effect of the mobile air cleaning method according to an embodiment of the present invention.

10 is an indoor view for examining the cleaning effect according to the mobile air cleaning method according to another embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: air detection unit 200: air government

300: object detecting unit 400: moving unit

500 control unit 1000 air cleaning device

A method of cleaning air while moving.

The air is closely related to the living environment of man. Air affects health at every moment through human breathing and through skin contact. Therefore, a lot of attention has recently been given to clean air. Since air is invisible in nature and hardly recognizable, it is necessary to determine the degree of contamination in particles constituting air.

The air purifier according to the related art is composed of an air suction unit for sucking air, a filter unit for purifying the sucked air, and a blower unit for discharging the purified air. Therefore, the range of air that can be inhaled by the air cleaner is a limited range around the air cleaner.

Purifiers currently supplied to homes and offices purify air in fixed locations. If it is small, it is fixed to a shelf or desk, and if it is large, it is located on one wall. However, when the air is cleaned in such a fixed form, there is a problem in that only a limited range of air is cleaned. Even when using air convection, it takes a long time for all the indoor air to be cleaned through the convection. In addition, there is a problem that only a limited range of air is purified around the air purifier because the divided space other than the open space is not desired for air convection.

Accordingly, there is a need for a method and apparatus for cleaning a wide range of air for a short time through an unmoved and moving air cleaner.

The technical problem of the present invention is to clean the air while moving.

Another technical problem of the present invention is to allow air cleaning to be performed in a space where air convection is not desired.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

A method of cleaning air while moving.

According to an embodiment of the present invention, a method of cleaning air while moving includes: obtaining a characteristic of a pollutant contained in ambient air by the air cleaning device, and setting a direction of movement according to the characteristic of the pollutant And moving to the set direction.

As used herein, the term 'air cleaning device' refers to a device for cleaning air, and the air cleaning device provides a function of air cleaning or air purification. For example, particulate and gaseous contaminants in the air can be removed to create a clean air environment.

As described above, the conventional fixed air cleaners are not convective or cannot efficiently clean air in a large space. Therefore, when the air is cleaned by moving to a specific location, the polluted air is blocked, and the cleaning effect is increased when the air is moved around the space divided by partitions. On the other hand, since the negative ions do not remain long after being generated in the air cleaning device, the effect of the negative ions hardly occurs throughout the space.

1 is a view showing an air cleaning device according to an embodiment of the present invention. Figure 1 (a) is a perspective view of the air cleaning device, (b) is a view showing the inside of the air cleaning device. The air cleaning device includes a moving unit 100 which moves the air cleaning device largely and an object detecting unit 310 and 340 which allow the moving unit to avoid a collision with an obstacle and maintain a certain distance from the wall, and the air cleaner to clean the air. The government 220, 240, 280 and the air detection unit for detecting the degree of pollution and smell of air. Although not shown in the figure, there is a control unit for controlling movement and function according to information generated between each component of the air cleaning apparatus. In addition, it includes a charging unit, a portable power supply unit, a display unit, and an input unit. An overview of these is as follows.

The moving unit 100 moves the air cleaning device. The moving unit includes a driving unit that largely generates power, and a traveling unit that performs movement through the power. It also includes a moving distance calculation unit for calculating the moved distance. The moving unit may be located at the lower portion of the air cleaner as in the embodiment of FIG. 1 and may be combined with the air cleaning device.

The object detecting unit detects the wall through the wall detecting unit 340 so that the air cleaning device maintains a predetermined distance or more from the wall, and detects the obstacle so as not to hit the obstacle while moving through the obstacle detecting unit 310. In addition, when the contact with the obstacle during the movement, it detects the contact with the object through the collision detection unit to enable the moving unit to move the obstacle or vice versa. In addition, a fall detection unit is optionally included, which allows the air cleaning device to avoid dents while moving.

Air cleaners clean the air. It includes a suction unit 220 and the discharge unit 240, the pollutant removal unit. The suction unit 220 detects and sucks dust, harmful gas, odor gas, and the like suspended in the indoor floor and the air. To detect this, the information detected by the air detector is used. The contaminant removing unit filters the contaminants sucked from the suction unit 220. The discharge unit 240 discharges air from which contaminants have been removed.

The air detector includes a dust detector, an odor detector, and a VOC detector. The dust detector detects the amount of dust floating in the air to determine the degree of contamination. VOC detection unit and odor detection unit can be checked by measuring the concentration of the chemicals and odor components present in the air.

In order for the moving unit to move, information on which direction and which distance should be moved is required. This can be obtained through the object detection unit and the air detection unit. Obstacles and wall position information collected by the object detecting unit are sent to the control unit to instruct which moving unit of the moving unit and to what extent. In addition, when the pollution information is collected through the air detection unit, the control unit may calculate a high and low pollution area and instruct the moving unit to move to a high pollution level. The control unit collects information obtained by each component performing its function, and acts as a coordinator to operate other components based on the information.

Each component and an operating mechanism of the air cleaning device will be described in detail later in the drawings.

Figure 2 is an exemplary view showing the configuration of the moving part of the air cleaning apparatus according to an embodiment of the present invention.

As shown in FIG. 1, the moving unit includes a driving unit, a driving unit, and a moving distance calculating unit.

The driving units 442, 446, and 448 serve to move the moving unit and the air cleaning device connected to the moving unit. It can be implemented through wheels, and in addition to wheels, quadrupedal walking, which is used for the recent movement of robots, includes this.

The driving unit 410 transmits power to the driving unit and adjusts the direction. The driving unit 410 includes a steering unit 412 and a power transmission unit 416. The power train 416 includes a motor that generates power from an energy source such as power. The steering unit 412 controls the moving direction by adjusting the direction of the driving unit 442. The direction control is possible by adjusting the directions of any one or more of the driving units 442, 446, and 448. Although not shown in FIG. 2, the moving direction may be controlled by adjusting the left and right directions of the driving unit 446 in the moving direction.

The movement distance calculation units 472 and 476 calculate the distance traveled by the driving units 442 and 448. As an embodiment of the calculation method, the distance traveled may be calculated by multiplying the number of rotations of the left and right driving units 442 and 448 by the diameter of the driving unit.

An air cleaning apparatus according to an embodiment of the present invention provides three types of air cleaning methods. It performs the movement and therefore requires charging. Therefore, there is a fixed method of performing air cleaning while being charged or fixed. This is similar to the way in which a conventional air cleaner cleans air. When it is charged and no longer needs to be powered, it can move freely from the power source. Even in the movement, there is an autonomous movement method to clean the air while following the wall or the pollutants, and there is a manual movement method in which a person manually moves the air cleaner. The manual movement method refers to a method in which the user moves the air cleaning device to a space desired by the user or a space in which the user primarily resides. Conventional air cleaning devices are not free from power, and can be moved by the length of the wire. However, because the length of the wire is limited, moving to another space may cause inconvenience. However, since the air cleaning apparatus according to an embodiment of the present invention supports a manual movement method, it is possible to clean the air at a place desired by the user, beyond the limitation of the wire.

3 is a flow chart of the air cleaning device according to an embodiment of the present invention to move along the wall.

The user switches functions by autonomous movement, or starts autonomous movement by turning on the power (S102). Function switching can be performed by a button, a remote control or a schedule stored therein. The air cleaning device may be in contact with another object or in combination with the charging station in a charged state prior to the start of autonomous movement. Therefore, it is determined whether it is in contact with another object (S104). If in contact with another object is moved in a direction different from the contacted direction (S106). Even when combined with the charging station, it can be determined as a contact and can move in the opposite direction to the charging station.

In order to move along the wall, the wall must be found (S110). In order to detect the wall, the air cleaning device may rotate at a predetermined angle, or move a predetermined distance back and forth, left and right. The direction of rotation may vary depending on the embodiment. If the wall is detected and the distance between the wall and the air cleaning device is close, there is no need to rotate again, just move along the wall.

If it does not detect the wall through this process, it moves in a specific direction (S114). Then, the process of detecting the wall again at the moved position may be performed again (S110). The movement of the step S114 may mean to move a predetermined distance, for example, 20 cm or 50 cm. In addition, the movement of the step S114 includes continuing to move in one direction until the wall is detected. Although not shown in the flowchart, there are various ways to find the walls. If you can't find the wall, you can go ahead and find it without rotating. This is because the wall must exist in the closed space, so if it moves in one direction, the wall can be encountered.

When the wall is detected, the wall approaches the detected direction (S120). In order to detect a wall, a wall detector that performs a sensor function may be used. While approaching the wall can meet the wall to detect the obstacle (S122). In particular, a room or living room occupying a large space with furniture and electronics is likely to collide with obstacles when moving along the wall. Therefore, obstacle detection is performed to avoid collision with the obstacle.

If the obstacle is detected (S124) to move in a different direction to avoid collision with the obstacle (S126). When moving in the other direction, the wall must be detected again and moved along the wall, so the wall can be detected and moved again in step S110. The wall detection unit is used to maintain a certain distance from the wall, and the obstacle detection unit avoids obstacles.

When approaching the wall is found to be close to the wall through the object detecting unit, while maintaining a predetermined distance from the wall and moves along the wall (S130). The predetermined distance maintains a distance such that the rotation is easy when the air cleaning device encounters an obstacle. Also, if you are too far from the wall, it is difficult to move along the wall, so you must keep the distance away from the wall.

While moving along the wall continuously detects the obstacle (S132). If an obstacle is detected (S134), the obstacle is to be avoided, so it moves in a different direction (S140). After moving in the other direction, a step (S110) of detecting the wall is performed again. This is because the position of the wall detected by the movement of S140 may vary. On the other hand, the calculated position of the wall and the direction and distance moved in the step S140 can be moved back to the wall.

One way to avoid obstacles is to move backwards. According to another embodiment, if the obstacle is detected while following the wall counterclockwise, the obstacle may be moved to the left side and then moved back to the wall after avoiding the obstacle. Which direction to move to avoid obstacles, for example, to the left or to the rear, is applicable differently depending on the situation.

If there is no obstacle, the vehicle stops by moving a predetermined distance along the wall (S136). And clean for a predetermined time or until the pollution level is below a certain level (S138).

The predetermined distance may vary depending on the air cleaning area. And it may vary depending on the degree of pollution of the air in the moving area. If there is a clean area of about 1m, the cleaning is performed by moving more than 1m in a straight line distance. The time it takes to clean the air can vary depending on the situation. Air cleaning can be carried out during the movement, moving along the wall and stopping for a while to perform the air cleaning. When the air cleaning and the movement at the same time, the power consumption can be large, depending on the charging degree, the air cleaning can be performed in a certain area after the movement is weak or weak air cleaning, or without performing the air cleaning. This may be implemented differently depending on the power supply state and the degree of air pollution.

Steps S126 and S140 detect an obstacle while moving in a different direction by detecting an obstacle while moving to the detected wall or moving along the wall. However, it is also possible to move directly to or along the wall without detecting the wall. The control unit stores the position of the previously targeted wall, and the control unit can calculate the direction and the distance moved to avoid the obstacle, so that the position of the previously targeted wall can be calculated and moved.

Although not shown in the drawing, there is a case in which the object detecting unit collides with an object which is not detected. If the height is too low to detect the obstacle, it may crash. When the collision is detected through the collision detection unit, the collision may be moved in a direction different from the collision direction, and the wall may be detected again.

Figure 4 is a flow chart for cleaning the air by moving the air cleaning device detects the contamination according to an embodiment of the present invention.

The reason for moving the air cleaning device is to clean a large area of air, but to increase the efficiency of cleaning, it is also necessary to clean the air where there is a lot of pollution. 4 is a flowchart illustrating a process in which the air cleaner detects contamination, avoids obstacles, and performs movement.

The air cleaning device may be in contact with another object or combined with the charging station in a charged state prior to the movement. Therefore, it is determined whether it is in contact with another object (S204). If in contact with another object is moved in a direction different from the contacted direction (S206). Even when combined with the charging station, it can be determined as a contact and can move in the opposite direction to the charging station.

The air detector may be used to obtain characteristics of pollutants in the surrounding air (S210). This may be to determine the concentration difference of the pollutant, and can also be determined as a component of the pollutant. The difference in concentration can be determined by the high and low distribution of a particular substance. Contaminant components can be weighted to chemicals, dust, etc. to change the distribution of the components to arithmetic values to determine the high and low levels of contaminants. The characteristics of the pollutant may be the amount of dust contained in the air in a certain space, and may also be the amount of particles that cause an odor. In addition, the amount of volatile organic compounds (VOC) can also be a property of the pollutant. If the air detector is mounted on the outside of the air cleaning device, the characteristics of the pollutants obtained from each side can be known.

In addition, the air cleaning device may move back and forth, left and right a certain distance in order to measure in which direction there is a large amount of pollutants, the concentration of the pollution. As a result of the detection, when the characteristic of the pollutant is obtained, it is set in which direction (S220). Can move to a lot of pollutants. For example, it can move to a lot of dust or to VOCs. In addition, if the distribution of pollutants is gradually increased in a certain direction, the pollutants may be sequentially cleaned from the place where there is little pollutant and move to the place where there is a lot of pollutants. This setting direction may vary depending on the nature and distribution of the pollutant. Determining the characteristics of the contaminants will be described in detail with reference to FIG. 5.

This moves in the set direction (S220). While moving, the air cleaning apparatus examines whether an obstacle exists (S230). When the obstacle is detected, the vehicle moves to another direction (S236). Moving in the other direction includes moving backward or moving left or right. You can also move with a slight angle change so that you do not collide with the obstacles and do not deviate significantly from the previous direction of travel.

This move in the other direction can make it difficult to move in the direction you previously targeted. Therefore, the process of obtaining and moving the contaminant again through the air detector may be performed again (S210 ˜ S220). On the other hand, it is possible to calculate the direction and distance moved by detecting the obstacle and the direction previously targeted, it can be moved in the direction previously targeted.

If there is no obstacle, it stops by moving a predetermined distance along the wall (S232). And it cleans for a predetermined time or until the pollution degree of air becomes below a predetermined level (S234).

The predetermined distance may vary depending on the air cleaning area. And it may vary depending on the degree of pollution of the air in the moving area. If there is a clean area of about 1m, the cleaning is performed by moving more than 1m in a straight line distance. The time it takes to clean the air can vary depending on the situation. Air cleaning can be carried out during the movement, moving along the wall and stopping for a while to perform the air cleaning. When the air cleaning and the movement at the same time, the power consumption can be large, depending on the charging degree, the air cleaning can be performed in a certain area after the movement is weak or weak air cleaning, or without performing the air cleaning. This may be implemented differently depending on the power supply state and the degree of air pollution.

In step S236, the obstacle is sensed during the movement and the vehicle moves in a different direction and then obtains the characteristics of the pollutant again. By the way, it is also possible to move without the step of obtaining the characteristics of the pollutant again. The controller stores the position to be moved previously and the controller calculates the moving direction and distance to avoid the obstacle, so that the controller can calculate and move the previously targeted position.

Although not shown in the drawing, there is a case in which the object detecting unit collides with an object which is not detected. If the height is too low to detect the obstacle, it may crash. When the collision is detected through the collision detection unit, the collision may be moved in a direction different from the collision direction, and the wall may be detected again.

In addition to moving along walls or along contaminants, air cleaning devices can be moved to the center of the room to perform air cleaning. This is because when the distances of objects detected from the front, rear, left, and right through the object detecting unit are similar, they can be determined as being in the center of the space. It can also be located in the center of the space if you move straight from one wall to the other and back again by that distance.

5 is an exemplary view illustrating an odor detection and processing process for detecting and moving an odor according to an embodiment of the present invention. By detecting odor, which smell is strong or pollutants can be determined by patterning and classifying the results detected by several sensors.

The sensor array refers to a collection of several sensors mounted on the sensing unit. Sensor arrays can be mounted before, after, or to the left or right of the air cleaning device to measure odor in various directions. The measured values from the sensor array are preprocessed. Over time, contaminants or odor-causing substances accumulate. Based on the accumulated information, the characteristics of each substance are examined, for example, whether there is a lot of ammonia or whether there is a lot of formaldehyde. As a result, the feature is extracted. Once features are extracted, they are distinguished. The direction of movement is determined by reviewing which substances cause odor in the materials obtained from which sensors. Through this process, the smell can be determined and moved in the direction of movement. In this process, the information calculated at each step can be fed back to help extract information from the previous step. The moving direction may be calculated by the controller, and when the controller transmits the calculated information to the moving unit, the moving unit moves in the requesting direction.

Figure 6 is a block diagram showing the components of the air cleaning apparatus according to an embodiment of the present invention. The apparatus constituting the air cleaning functions in different components according to the information calculated by the air detecting unit 100, the air cleaning unit 200, the object detecting unit 300, the moving unit 400, and each component. And a controller 500 for requesting to perform the operation. The air detection unit 100 detects a substance present in the air and detects the degree of contamination at the corresponding position. The air detection unit 100 determines a high pollution area and a low area when moving to a high pollution degree. The air detection unit 100 has a variety of depending on the nature of the pollutant. 6 is a VOC detection unit 120 for detecting volatile organic compounds, a dust detection unit 140 for examining how much dust is present, and an odor detection unit for detecting an odor such as ammonia gas according to an embodiment of the present invention. There is a negative ion detection unit 180 for detecting whether the 160 and a lot of negative ions.

The VOC detector 120 may collect a compound present in the air and apply a specific electrical or chemical or physical stimulus to determine how much of the volatile organic compound exists. Since dust means that small particles float in the air, the dust detection unit 140 may sense the amount of dust having a degree to be scattered by the dust by sending light. Alternatively, a certain amount of air may be sucked in to determine how much dust is present in the air. Odor detection unit 160 may determine whether the odor is much or less by measuring the amount of ammonia gas, formaldehyde, etc. that cause the odor in the air.

The air cleaner 200 functions to clean the air. The air cleaner 200 according to the embodiment of the present invention inhales and cleans the air, and discharges clean air again. It can also release negative ions to remove contaminants. The specific purposes of air cleaning include dust collection that inhales dust and discharges clean air, deodorization to remove odors, sterilization to remove harmful bacteria, and reduction to reduce and control the unbalanced state of the atmosphere. The air cleaner 200 includes a suction unit 220 for sucking air, a pollutant removing unit 280 for removing contaminants of the sucked air, and a discharge unit 240 for resending the air from which the pollutants are removed. Include. In addition, the negative ion release unit 260 that cleans the air by coupling the negative ions to the colloid floating in the air by emitting anions.

The suction unit 220 may be installed at the bottom or the front of the air cleaner 200. It can also be installed on the bottom and side, or the top and side. Although the location of the suction unit 220 may vary, since the sucked air is discharged through the discharge unit 240 again after being cleaned, a physical location with the discharge unit 240 may be considered. If the suction unit 220 is mounted on the bottom and the front, the discharge unit 240 may be mounted on the rear or top. Of course, the reverse is also possible. However, in order to receive less air resistance when the air cleaning device is being moved while the air cleaning device is moving, if the suction part 220 is mounted in the direction in which the air cleaning mainly moves, and the discharge part 240 is mounted on the opposite side, By reducing the resistance of the air can reduce the energy consumption of the movement.

The pollutant removing unit 280 removes pollutants present in the sucked air. In order to remove contaminants, it is also possible to store dust inside an air cleaning device using anions, and to remove dust using high voltage electricity. On the other hand, since the air cleaning is not limited to dust collection but also includes a function of sterilization, the pollutant removing unit 280 includes a function of sterilizing bacteria present in the inhaled air.

The contaminant removing unit 280 removes contaminants in a filter or mechanical manner, an electric method, and a mixture of the two. Filtered or mechanical may be used to filter and deodorize the filter medium or activated carbon. Electricity can remove contaminants by collecting dust through the positive electrode with electrostatic precipitating. Mixed formulas use both methods together to remove contaminants.

As described above, the negative ion releasing unit 260 releases negative ions into the air and reacts with harmful substances present in a colloidal state to clean the air as well as perform various functions beneficial to the human body.

The object detecting unit 300 allows the air cleaning device to move along the wall avoiding obstacles. The object detecting unit 300 includes an obstacle detecting unit 310, a wall detecting unit 340, and an impact detecting unit 370. The obstacle detecting unit 310 determines the existence of an obstacle present in the moving direction. Sensors capable of detecting a distance, for example, an ultrasonic sensor or an infrared sensor, may be used to detect an object in a moving direction. Therefore, the obstacle detecting unit 310 may be mounted in the direction in which the air cleaning device moves. Meanwhile, the wall detecting unit 340 detects the wall so that the air cleaning device can move while maintaining a constant distance from the wall. The wall detecting unit 340 may be mounted on the side of the air cleaning device to maintain the distance between the air cleaning device and the wall.

The impact detector 370 notifies the collision if the air cleaning device collides with an obstacle that is not detected during the movement. The impact detection unit 370 according to an embodiment of the present invention may add an on / off switch to the outside of the air cleaning device to detect a collision by pressing the switch when a collision occurs. In addition, a fall detection unit may be provided. The fall detection unit detects depressions or steep slopes from the ground through sensors to prevent further progress. The fall detection unit may detect the recessed portion by whether the signal sent in the direction of travel through the sensor is uniformly input.

The moving unit 400 moves the air cleaning device and calculates a moving distance. The moving unit 400 largely includes a driving unit 410, a driving unit 440, and a moving distance calculating unit 470. The driving unit 410 may include a power transmission unit such as a motor, and may generate power from a power source and convert the power into kinetic energy. It also includes a steering unit and can set the direction of movement. The driving unit 440 may be a wheel and a caterpillar filter. In the case of changing the direction, it is possible to change the direction by using the steering part of the driving unit and also change the direction by changing the rotation speed of both wheels. In addition, due to the nature of the air cleaning device requires a gradual movement rather than a fast movement, it is possible to use a vehicle other than the wheel. The movement distance calculation unit 470 examines how much the air cleaning device has moved. When the driving unit 440 includes wheels on both sides, it may be obtained through the number of rotations of both wheels and the diameter of the wheels.

The controller 500 performs a function of controlling each component based on the information generated by the aforementioned components. For example, in order to avoid obstacles during movement, information is continuously received from the object detecting unit 300. When the object detecting unit 300 detects the wall, the control unit 500 obtains the position and direction of the wall from the object detecting unit 300. The controller 500 commands the moving unit 400 to move in the corresponding direction. The stop may be ordered by checking whether the distance is moved by the distance indicated by the movement distance calculator 470. On the contrary, if the control unit 500 transmits information about the distance to the moving unit, the moving distance calculating unit 470 may continuously calculate the moving distance and instruct the driving unit and the driving unit to stop. When the pollutant is located and moved, the controller 500 may issue a movement command to the movement unit 400 in the direction obtained through the air detection unit 100.

In addition, while performing the cleaning in the air cleaning unit 200, the air detection unit 100 continuously detects the degree of air pollution and informs the result of the control unit 500. If the air pollution is below a predetermined level, the controller 500 may stop the air cleaning function of the air cleaner, and then may command the movement to the moving unit 400.

In addition to the matters described in FIG. 6, the charging unit may exist so as to be free from power during movement. The charging section charges electricity so that the air cleaning device can store electrical energy. The charging unit includes a charging station. And a portable power supply may be included in the air cleaning device. The portable power supply unit charges electricity like a battery and discharges it again to provide electrical energy.

On the other hand, it may include a display unit for the user to know what the current state or function of the air cleaning device, there may be an input unit for the user to input to control the function of the air cleaning device. The input unit can be mounted on a button or display unit by a touch screen method, and can be remotely controlled by a remote control.

7 is a flowchart illustrating a process of performing air cleaning by the air cleaning apparatus according to an embodiment of the present invention. The user turns on the air cleaning device (S302). The air cleaning apparatus examines the currently set value (S304). Review whether it was previously autonomous, how clean it was, and whether it is currently fully charged. As a result, it is sufficiently charged, and if the set value is autonomous movement, autonomous movement starts (S310). The driving unit drives the driving unit (S312). The object detecting unit starts an operation to perform object detection (S314). As described above, the object detecting unit detects a wall and an obstacle and detects a collision. When the autonomous movement starts, the autonomous movement is performed according to the method described with reference to FIGS. 3 and 4 (S316). The air may be cleaned while moving (S320). On the other hand, when the previous setting value is in the stop mode, air cleaning starts immediately without the process of S312 to S316. According to the user's setting, the air may not be cleaned while moving, and the air may be cleaned after moving to a specific place. Since the user may input to request or stop performing the function even during the air cleaning, the air cleaning apparatus waits for the user's input and performs the function (S322). When the user selects a function, the user may perform the function or stop or perform another function according to the value input by the user (S330).

There are three main functions that the user can input into the air cleaning device. It changes the functions provided by the air cleaning device, such as changing the clean way, changing the way of moving, or changing the wind strength and wind direction.

The user may select or change the clean manner (S332). The cleaning method may be provided in various ways depending on the air cleaning device. Automatic operation method, yellow dust removal method, power saving function, deodorizing function can be selected. On the other hand, the user can select the strength or wind direction of the wind (S334). The strength of the wind can be controlled by turbos, strong winds, weak winds and breezes. In addition, if the current clean method is fixed, it may be selected as fixed, or if the current clean method is fixed (S336). On the other hand, if it is performing air cleaning in a fixed state (S340), go to step S312 for movement. If it is currently moving to stop the autonomous movement is fixed to perform the air cleaning (S342).

8 is an indoor view for examining the clean effect according to the conventional fixed air cleaning method.

The experiment carried out in FIG. 8 is a view showing a clean effect in the case where one stationary air cleaning device according to the conventional method air cleaning. The air is measured at the position (1) inside the apartment 700, and the removal rate of dust when air cleaning is performed for 30 minutes at each location is shown in Table 1.

Meter location Air freshener location Dust removal rate (%) 0.3micron 0.5micron One One 29.5 74.3 One 2 26.9 69.1 One 3 24.3 67.2 One 4 19.9 58.9 One 6 12.3 53.2 One 7 5.7 29.3 One Natural purification 3.3 24.2

The reduction of 0.3 micron particles and 0.5 micron particles is shown as a percentage. Therefore, the larger this number, the more dust is removed, and the greater the effect of air cleaning. As can be seen from the table, the difference in dust removal rate is very large depending on the distance between the measuring position and the air cleaner. In particular, the position 1 and position 7 can be seen that the difference in removal rate is noticeable.

Therefore, the air cleaning of the stationary purifier has a different cleaning effect depending on where the air purifier is placed. In particular, since there is a lot of furniture and the air flow is not smooth in the divided space, the deviation according to the place may be greater.

9 is an indoor view for looking at the cleaning effect according to the mobile air cleaning method according to an embodiment of the present invention. The measuring device measures the dust removal rate through two experiments in which the air cleaner moves at position 1. The second experiment shows the results of measuring the dust removal rate at 6 and 7 after the air cleaning device has completed the movement.

Meter location Experiment Air freshener location Dust removal rate (%) 0.3micron 0.5micron One One 4-> 5-> 1-> 3-> 7-> 6 27.3 67.5 One 2 4-> 5-> 1-> 3-> 7-> 6 24.4 67.7 6 2 After clean 40.2 77.2 7 2 After clean 36.6 74.7

As can be seen from the results of Table 2, compared to the fixed type, the dust removal rate measured at the position of 1 is not significantly different from that shown in Table 1. In particular, the last position reached by the air cleaning device is 6, it can be seen that the dust removal rate is high even though it is far from the position of 1. On the other hand, the dust removal rate of the positions 6 and 7 close to the 6 is 60.2 and 36.6 for 0.3 micron particles, 77.2 and 74.7 for 0.5 micron particles, and the air cleaning is performed only in 1, which is the result of FIG. It can be seen that the dust removal rate is so high that it cannot be compared.

10 is an indoor view for examining the cleaning effect according to the mobile air cleaning method according to another embodiment of the present invention.

When the conventional fixed air cleaning device is clean in the living room, there is no air cleaning effect in the separated space such as bedroom 1 (710). However, since the movable type moves the living room along the wall, a better cleaning effect occurs when the door of the bedroom 1 (710) is opened.

If the air cleaning device is moved to 4-> 5-> 1-> 3-> 6 as shown in FIG. For comparison, experiment with natural purge and with air cleaner fixed at position 1.

Meter location Air purifier way Dust removal rate (%) 0.3micron 0.5micron 7 Natural Purification 16.2 56.6 7 From 1 to fixed 32.6 74.8 6 4-> 5-> 1-> 3-> 7-> 6 32.9 83.2

As can be seen from Table 3, the rate of dust removal is very low in the case of natural purification compared to the case of cleaning. When comparing stationary and mobile, there is no difference between mobile and stationary with 0.3 micron dust removal rate of 0.3%. However, at 0.5 micron, the dust removal rate was increased by 9% from 74.8% to 83.2% compared to the fixed type.

Those skilled in the art will appreciate that the present invention can be embodied in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. The scope of the present invention is indicated by the scope of the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalent concept are included in the scope of the present invention. Should be interpreted.

By implementing the present invention it is possible to provide an air cleaning device that moves automatically.

By implementing the present invention, air purification of spaces where convection of air is not desired can be achieved.

Claims (11)

Obtaining, by an air cleaning device, the characteristics of contaminants contained in the ambient air of the air cleaning device; Setting a direction of movement according to the characteristics of the pollutant; And Moving to the set direction; The step of obtaining the characteristics of the pollutant may include sensing air through an air detector attached to the air cleaning device; Classifying pollutants included in the sensed air by components; And classifying contaminants in accordance with the classified components. The method of claim 1, Determining the characteristics of the pollutant comprises determining a difference in concentration of the pollutant. The method of claim 1, Determining the nature of the pollutant comprises determining a component of the pollutant. The method of claim 1, Before the step of characterizing the pollutant, Determining whether the air cleaning device is in contact with another object; And moving the air cleaning device as far as it can rotate if it is in contact with another object as a result of the determination. delete The method of claim 1, The moving step Detecting an obstacle present in a direction in which the air cleaning device moves; If sensing an obstacle, moving in a different direction; Obtaining characteristics of the pollutant at the moved position; And Moving in accordance with the nature of the contaminant. The method of claim 1, The moving step Detecting an obstacle present in a direction in which the air cleaning device moves; If sensing an obstacle, moving in a different direction; Calculating a moved direction and a moved distance in the moving in the other direction; And And moving in a targeted direction when there is no obstacle, according to the calculated result. The method of claim 1, The moving step Detecting whether the air cleaning device collides with another object; Moving in a direction different from the collision direction; Obtaining characteristics of the pollutant at the moved position; And Moving in accordance with the nature of the contaminant. The method of claim 1, Purifying the air while moving. The method of claim 9, The step of cleaning the air, The air cleaning device inhaling air; Removing contaminants present in the aspirated air; And Exhausting the contaminant-free air to the outside. The method of claim 9, The step of purifying the air includes the step of discharging negative ions, And the released negative ions bind to pollutants in the air.

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