Patent Publication Number: US-2022218177-A1

Title: Control method of dishwasher

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims priority to and the benefit of Korean Patent Application No. 10-2021-0003415, filed in Korea on Jan. 11, 2021, the disclosure of which is incorporated herein by reference in its entirety. 
     BACKGROUND 
     1. Field of the Invention 
     The present disclosure relates to a method of controlling a dishwasher, and more particularly, to a method of controlling a dishwasher which controls opening or closing of a door of the dishwasher. 
     2. Discussion of Related Art 
     Contents described in this section merely provide background information on the present disclosure and do not constitute the related art. 
     In general, dishwashers are devices that spray washing water to accommodated dishes at a high pressure, wash the dishes, and then dry the dishes. In detail, the dishwashers are operated so that the washing water is sprayed at a high pressure into a tub in which the dishes are accommodated, and the sprayed washing water comes into contact with the dishes to wash foreign substances such as food waste stuck to the surfaces of the dishes. 
     The dishwasher generally includes the tub forming a washing chamber and a sump mounted on a bottom of the tub to store the washing water. 
     Further, the washing water is moved to a spray arm by pumping action of a washing pump mounted inside the sump, and the washing water having been moved to the spray arm is sprayed at a high pressure through a spray port formed in the spray arm. 
     Further, the washing water sprayed at a high pressure collides with the surface of a washing target, and thus dirt stuck to the washing target falls to the bottom of the tub. 
     After the washing using the washing water is completed during the operation of the dishwasher, the dishes that are the washing targets may be dried. In this case, for efficient drying, a door of the dishwasher may be opened during a partial section of the drying process for the dishes. 
     When the door of the dishwasher is opened, foreign substances floating in the interior may flow into the dishwasher and contaminate the washed dishes. Thus, a method of suppressing occurrence of the contamination of dishes, which may occur when the door of the dishwasher is opened, is required. 
     European Patent No. EP1733675B1 (hereinafter, referred to as related art 1) discloses a dishwasher equipped with a pivotal door and a method of operating the same. Korean Patent Application Publication No. 10-2020-0023976 (hereinafter, referred to as related art 2) discloses a control method of opening or closing a door in a dishwasher equipped with the door. 
     However, related art 1 and related art 2 do not disclose a method of measuring the degree of contamination of indoor air and opening or closing a door according to the measurement result. 
     SUMMARY OF THE INVENTION 
     The present disclosure is directed to providing a method of controlling a dishwasher, which controls opening of a door of the dishwasher during a drying process in the dishwasher having an auto open door (AOD) function. 
     The present disclosure is also directed to providing a method of controlling a dishwasher which suppresses foreign substances from penetrating into the dishwasher having an open door. 
     The present disclosure is also directed to providing a method of controlling a dishwasher which controls an operation of the door of the dishwasher using a mobile device carried by a user. 
     The purposes of the present disclosure may be not limited to the purposes described above, and other purposes and advantages of the present disclosure that are not described may be understood by the following description and may be more clearly understood by embodiments of the present disclosure. Further, it may be easily identified that the purposes and advantages of the present disclosure may be implemented by units and combinations thereof described in the appended claims. 
     A control system for a dishwasher according to an embodiment may include a dishwasher, an air quality detection device, and a mobile device. 
     The air quality detection device may be provided in an indoor space in which the dishwasher is disposed and may be disposed separately from the dishwasher. The air quality detection device may be disposed separately from the dishwasher in the indoor space in which the dishwasher is disposed. 
     The air quality detection device may be a device that may detect a contamination level of indoor air and transmit the detected information to the mobile device. 
     The air quality detection device may communicate with the mobile device in a wireless manner and may be, for example, an air purifier or an air conditioner sold as home appliances or an air contamination measurement device provided in each house in an apartment complex. 
     The mobile device may be, for example, a smart phone, a tablet personal computer (PC), or the like that a user may carry. The mobile device may be provided to communicate with the dishwasher and the air quality detection device, and an application that links the dishwasher and the air quality detection device may be registered in the mobile device. 
     A method of controlling a dishwasher according to an embodiment may include the following processes. 
     The application may link the dishwasher and the air quality detection device, which is provided outside the dishwasher, with each other. Due to the linking, the air quality detection device and the dishwasher may be connected to communicate with the mobile device. 
     The application may receive, from the user, whether or not to activate an auto open door (AOD) function of the dishwasher. For example, the application may open a pop-up window on an interface of the mobile device, and receive, from the user through the pop-up window, a command related to whether or not to automatically open the door during a drying process. 
     When a command of activating the AOD function is input from the user, the application may determine whether or not the quality of the indoor air input from the air quality detection device is within a set range. 
     When the quality of the indoor air deviates from the set range, the application may recommend the user to deactivate AOD of the dishwasher. When the quality of the indoor air deviates from the set range, the quality of the indoor air is in a bad state, and thus the application may display a text or emit a voice through the mobile device so as to recommend the user to deactivate the AOD. 
     The application may maintain or deactivate the AOD function of the dishwasher on the basis of a command input from the user. 
     The dishwasher may wash a washing target in a state in which the AOD function is maintained or deactivated according to the performance of the respective processes described above. 
     A process of drying the washing target may be performed in the following order. 
     The washing may be performed by the dishwasher. The application may determine whether or not the washing target, that is, a dish, enters a drying operation. 
     The application may receive information on the washing process from the dishwasher  1200 , and accordingly, may determine whether or not the washing target enters the drying operation by the dishwasher. 
     When the washing target enters the drying operation, the application may determine whether or not the AOD of the dishwasher is activated. The application may receive the control-related information from the dishwasher, and accordingly, determine whether or not the AOD is activated. 
     When the AOD is activated, the application may determine whether or not the quality of the indoor air input from the air quality detection device is within the set range. 
     When the quality of the indoor air deviates from the set range, the application may recommend the user to deactivate the AOD of the dishwasher. When the quality of the indoor air deviates from the set range, the quality of the indoor air is in a bad state, and thus the application may display a text or emit a voice through the mobile device so as to recommend the user to deactivate the AOD. 
     The application may maintain or deactivate the AOD function of the dishwasher on the basis of the command input from the user. 
     The dishwasher may dry the washing target in a state in which the AOD function is maintained or deactivated according to the performance of the respective processes described above. 
     In the method of controlling a dishwasher according to the present disclosure, when the quality of the indoor air is bad because many foreign substances are present in the indoor space, control is made to deactivate the AOD function in the drying operation of the dishwasher, and thus the foreign substances can be effectively suppressed from penetrating into the dishwasher during the washing process for the dish and being thus attached to the dish. 
     Further, in the method of controlling a dishwasher according to the present disclosure, the application may recommend the user whether to maintain or deactivate the AOD function of the dishwasher, and the determination is made according to the command of the user. Thus, the convenience of selection can be provided to the user. 
     Further, in the method of controlling a dishwasher according to the present disclosure, by controlling an operation of the door of the dishwasher using the mobile device carried by the user, a user&#39;s convenience can be increased. 
     Further, in the method of controlling a dishwasher according to the present disclosure, an air purifier or an air conditioner that is a separate product that is already installed or is installable or an air contamination measurement device that is provided in each house in an apartment complex is used as the air quality detection device that detects the quality of the indoor air. Thus, since there is no need to add a separate device to the dishwasher, manufacturing costs of the dishwasher can be reduced. 
     In addition to the above-described effects, the detailed effects of the present disclosure will be described together while specific details for implementing the disclosure are described below. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other objects, features and advantages of the present disclosure will become more apparent to those of ordinary skill in the art by describing exemplary embodiments thereof in detail with reference to the accompanying drawings, in which: 
         FIG. 1  is a perspective view illustrating an exterior of a dishwasher according to an embodiment; 
         FIG. 2  is a schematic cross-sectional view of the dishwasher according to the embodiment; 
         FIG. 3  is a view illustrating a control system for the dishwasher according to the embodiment; 
         FIG. 4  is a flowchart for describing a method of controlling a dishwasher according to the embodiment; 
         FIG. 5  is a flowchart illustrating a process of washing a washing target according to the embodiment; 
         FIG. 6  is a flowchart illustrating a process of drying the washing target according to the embodiment; 
         FIG. 7  is a flowchart illustrating a process of drying a washing target according to another embodiment; 
         FIG. 8  is a flowchart illustrating a process of drying a washing target according to still another embodiment; and 
         FIG. 9  is a flowchart illustrating a process of drying the washing target according to yet another embodiment. 
     
    
    
     DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     The above-described purposes, features, and advantages will be described in detail with reference to the accompanying drawings, and accordingly, those skilled in the art to which the present disclosure pertains may easily implement the technical spirit of the present disclosure. In the description of the present disclosure, when it is determined that a detailed description of widely known technologies related to the present disclosure may make the subject matter of the present disclosure unclear, the detailed description be omitted. Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components. 
     Although first, second, and the like are used to describe various components, it is apparent that these components are not limited by these terms. These terms are only used to distinguish one component from another component, and it is apparent that a first component may be a second component unless particularly otherwise stated. 
     Throughout the specification, unless particularly otherwise stated, each component may be singular or plural. 
     Singular expressions used herein include plural expressions unless clearly otherwise indicated in the context. In the present application, terms such as “configuring” or “including” should not be interpreted as necessarily including all of various components or various steps described in the specification and should be interpreted as not including some components or some steps thereof or further including additional components or additional steps. 
     Throughout the specification, when “A and/or B” is used, this means A, B or A and B unless otherwise stated, and when “C to D” is used, this means that a value is greater than or equal to C and less than or equal to D unless otherwise stated. 
       FIG. 1  is a perspective view illustrating an exterior of a dishwasher according to an embodiment.  FIG. 2  is a schematic cross-sectional view of the dishwasher according to the embodiment. An overall configuration of the dishwasher will be briefly described with reference to  FIGS. 1 and 2 . 
     The dishwasher may be used while being built-in in a space such as a kitchen. The dishwasher according to the embodiment may include a tub  10  that forms a space in which a dish is washed and has one open side, a door  20  that opens or closes the one open side of the tub  10 , and an accommodation rack  100  which is disposed inside the tub  10  and in which the dish is accommodated. 
     The dishwasher according to the embodiment may be provided with the tub  10  that has a washing chamber formed therein and has an open front surface. Inside the tub  10 , a space in which the dish that is a washing target may be accommodated may be formed, the rack  100  in which the dish is accommodated may be provided, and a washing module that washes the accommodated dish may be provided. 
     The dishwasher may include the door  20  that is rotatably connected to the tub  10  and opens or closes the open front surface of the tub  10 . The door  20  may be rotatably connected to one side of the tub  10  and, more particularly, may be rotatably connected to an upper side and a lower side of the one side. 
     The door  20  and the tub  10  may be hinge-coupled to each other. That is, the door  20  may rotate about a door rotary shaft disposed at a front lower end of the tub  10 . 
     The dishwasher includes a sump  31  that is disposed below the tub  10  and temporarily stores washing water supplied to the tub  10 . A filter for filtering foreign substances from the washing water flowing from the tub  10  may be disposed in the sump  31 . 
     The dishwasher may include a water supply pipe that supplies the washing water to the sump  31 , a water supply valve that opens or closes the water supply pipe, and a drainage pipe and a drainage pump that discharge the washing water in the sump  31  to the outside. 
     The dishwasher includes a plurality of washing nozzles  34  that spray the washing water to the washing chamber. The plurality of washing nozzles  34  may spray the washing water toward an inner surface of the rack  100  or the tub  10 . 
     A first washing nozzle  34   a  may be disposed above the tub  10  and spray the washing water to the lower side. A second washing nozzle  34   b  may be disposed below an upper rack  100   a  and spray the washing water to the upper rack  100   a  located on the upper side thereof. A third washing nozzle  34   c  may be disposed below a lower rack  100   b  and spray the washing water to the lower rack  100   b  located on the upper side thereof. 
     The dishwasher may include a washing pump  32  that is disposed below the tub  10  and pumps the washing water stored in the sump  31  to the plurality of washing nozzles  34 . 
     The dishwasher may include a plurality of connection pipes  33  that guide the washing water pumped from the washing pump  32  to the plurality of washing nozzles  34 . 
     The dishwasher may include a switching valve  35  that selectively guides the washing water pumped from the washing pump  32  to the plurality of connection pipes  33 . 
     The washing water supplied to the tub  10  is collected in the sump  31  disposed below the tub  10 . The washing water collected in the sump  31  flows to the washing pump  32  and is pressurized. The washing water pressed by the washing pump  32  flows to the switching valve  35  and selectively flows to the plurality of connection pipes  33 . The washing water flows through the connection pipes  33  and is pumped to the washing nozzles  34 . 
     The washing water pumped to the washing nozzles  34  is sprayed to the tub  10  and is collected in the sump  31  disposed below the tub  10  again. 
     A heater that heats the washing water may be further included in the washing pump  32 . The heater may heat the washing water inside the washing pump  32  to generate steam. 
     The dishwasher may further include a steam nozzle that branches off from the washing pump  32  and communicates with one side of the tub  10 . The generated steam may be sprayed to the tub  10  through the steam nozzle. 
     When the dish that is the washing target is washed using a dishwasher  1200 , a process of drying the dish may be performed after the dish is washed using the washing water. During the drying process of the dishwasher  1200 , the door may be opened for more efficient drying. In general, the dishwasher  1200  has an auto open door (AOD) function that automatically opens the door at a predetermined time point during the drying process. 
     Meanwhile, when flowing foreign substances such as dust and exhaust gas are present in an indoor space in which the dishwasher  1200  is disposed, the foreign substances may penetrate into the dishwasher  120  having an open door. When foreign substances penetrate into the dishwasher  1200  and adhere to the surface of the accommodated dish, there is a bothersomeness of having to wash the dish that has already been washed with the washing water again. 
     In particular, a user who is sensitive to foreign substance such as dust has a negative view on the AOD function, and accordingly, the demand for the dishwasher  1200  equipped with the AOD function may be reduced. 
     In a control method for the dishwasher  1200  according to the embodiment, a method of controlling the opening of the door of the dishwasher  1200  during the drying process in the dishwasher  1200  equipped with the AOD function to suppress foreign substances from penetrating into the dishwasher  1200  having the open door is proposed. 
       FIG. 3  is a view illustrating a control system for the dishwasher  1200  according to the embodiment.  FIG. 3  illustrates the control system including the dishwasher  1200  to implement the above-described method of controlling the dishwasher  1200 . 
     The control system according to the embodiment may include the dishwasher  1200 , an air quality detection device  1100 , and a mobile device  1300 . 
     The air quality detection device may be provided in the indoor space in which the dishwasher  1200  is disposed or may be disposed separately from the dishwasher  1200 . That is, the air quality detection device  1100  may be disposed separately from the dishwasher  1200  in the indoor space in which the dishwasher  1200  is disposed. 
     The air quality detection device  1100  may be a device capable of detecting a contamination level of indoor air and transmitting the detected information to the mobile device  1300 . 
     The air quality detection device  1100  may communicate with the mobile device  1300  in a wireless manner, and may be, for example, an air purifier or an air conditioner sold as home appliances or an air contamination measurement device provided in each household in an apartment complex. 
     The mobile device  1300  may be, for example, a smart phone, a tablet personal computer (PC), or the like that the user may carry. The mobile device  1300  may be provided to communicate with the dishwasher  1200  and the air quality detection device  1100 , and an application that links the dishwasher  1200  and the air quality detection device  1100  may be registered in the mobile device  1300 . 
       FIG. 4  is a flowchart for describing a method of controlling the dishwasher  1200  according to the embodiment. 
     In order to control the dishwasher  1200 , first, the air quality detection device  1100  and the dishwasher  1200  need to be linked with each other. In this case, the linking between the air quality detection device  1100  and the dishwasher  1200  may be implemented by an application registered in the mobile device  1300  of the user. 
     Hereinafter, each process of controlling the dishwasher  1200  described below, except for a dishwasher-specific process including an operation of opening or closing the door of the dishwasher  1200  and a process of detecting the quality of the indoor air, may be performed by the application registered in the mobile device  1300  as a whole. 
     For example, the application may open a pop-up window on a display-type interface of the mobile device  1300  to notify the user of information or receive a user&#39;s command. 
     The application may link the dishwasher  1200  and the air quality detection device  1100 , which is provided outside the dishwasher  1200 , with each other (S 110 ). Due to the linking, the air quality detection device  1100  and the dishwasher  1200  may be connected to communicate with the mobile device  1300 . 
     Further, when the linking is made, the application provided in the mobile device  1300  may receive information on the quality of the indoor air from the air quality detection device  1100 , and transmit, for example, a command of deactivating the AOD function to the dishwasher  1200 . 
     The user may activate the application to perform operation S 110  so as to proceed to each operation described below. Further, the user may terminate the activated application to deactivate the linking between the air quality detection device  1100  and the dishwasher  1200  so as not to proceed to each operation described below. 
     After the air quality detection device  1100  and the dishwasher  1200  are linked by the application, the application may perform control related to an AOD of the dishwasher  1200 . 
     That is, the application may receive whether or not the AOD function of the dishwasher  1200  is activated, determine whether or not the quality of the indoor air is within a set range, and recommend the user to deactivate the AOD of the dishwasher  1200 . These processes will be described in detail. 
     The application may determine whether or not to activate the AOD function of the dishwasher  1200  (S 120 ). For example, the application may open the pop-up window on the interface of the mobile device  1300 , and receive, from the user through the pop-up window, a command related to whether or not to automatically open the door during the drying process. 
     When a command of not automatically opening the door is input from the user, a washing process is immediately performed, the application commends the dishwasher  1200  so as not to open the door, and in this case, the door is not automatically opened during the drying process. 
     When a command of activating the AOD function is input from the user, the application may determine whether or not the quality of the indoor air input from the air quality detection device  1100  is within a set range (S 130 ). 
     Information on the quality of the indoor air may be transmitted from the air quality detection device  1100  to the mobile device  1300 , and the application registered in the mobile device  1300  may determine whether or not the quality of the indoor air is within the set range. 
     When the quality of the indoor air is within the set range, since the quality of the indoor air is in a good state, the application may not transmit a separate command signal to the dishwasher  1200  and may maintain the AOD function in the dishwasher  1200 . 
     In this case, the dishwasher  1200  may perform the washing process in a state in which the AOD function is activated. The set range for the quality of the indoor air may be appropriately selected in consideration of an acceptable range even when foreign substances penetrate into the dishwasher  1200 . 
     When the quality of the indoor air deviates from the set range, the application may recommend the user to deactivate the AOD of the dishwasher  1200  (S 140 ). When the quality of the indoor air deviates from the set range, the quality of the indoor air is in a bad state, and thus the application may display a text or emit a voice through the mobile device  1300  so as to recommend the user to deactivate the AOD. 
     The application may maintain or deactivate the AOD function of the dishwasher  1200  on the basis of the command input from the user. 
     When a command of maintaining the AOD function is input from the user, the application may not transmit a separate command signal to the dishwasher  1200 , and the AOD function may be maintained in the dishwasher  1200 . 
     When a command of deactivating the AOD function is input from the user, the application transmits a command signal of deactivating the AOD function to the dishwasher  1200 , and the dishwasher  1200  does not automatically open the door during the drying process. 
     The dishwasher  1200  may wash the washing target in a state in which the AOD function is maintained or deactivated according to the performance of the respective processes described above (S 160 ). 
     In the embodiment, when the quality of the indoor air is bad because many foreign substances are present in the indoor space, control is made to deactivate the AOD function in a drying operation of the dishwasher  1200 , and thus the foreign substances may be effectively suppressed from penetrating into the dishwasher  1200  during the washing process for the dish and being thus attached to the dish. 
     Further, the application may recommend the user whether to maintain or deactivate the AOD function of the dishwasher  1200 , and the determination is made according to the command of the user. Thus, the convenience of selection may be provided to the user. 
       FIG. 5  is a flowchart illustrating a process of washing a washing target according to the embodiment. The washing process in the dishwasher  1200  may include an operation of spraying the washing water to the dish and a drying operation of drying the dish after the washing water is completely sprayed. 
     The washing may be performed by the dishwasher  1200  (S 210 ). The application may determine whether or not the washing target, that is, the dish, enters the drying operation (S 220 ). The application may receive information on the washing process from the dishwasher  1200 , and accordingly, may determine whether or not the washing target enters the drying operation due to the dishwasher  1200 . 
     When the washing target enters the drying operation, the application may determine whether or not the AOD of the dishwasher  1200  is activated (S 230 ). The application may receive control-related information from the dishwasher  1200  and, accordingly, determine whether or not the AOD is activated. 
     When the AOD is deactivated, the dishwasher  1200  performs the drying, and the door is not automatically opened during the entire drying operation. 
     When the AOD is activated, the application may determine whether or not the quality of the indoor air input from the air quality detection device  1100  is within a set range (S 240 ). 
     The information on the quality of the indoor air may be transmitted from the air quality detection device  1100  to the mobile device  1300 , and the application registered in the mobile device  1300  may determine whether or not the quality of the indoor air is within the set range. 
     When the quality of the indoor air is within the set range, since the quality of the indoor air is in a good state, the application may not transmit a separate command signal to the dishwasher  1200 . In this case, the dishwasher  1200  may perform the drying in a state in which the AOD is activated. 
     When the quality of the indoor air deviates from the set range, the application may recommend the user to deactivate the AOD of the dishwasher  1200  (S 250 ). When the quality of the indoor air deviates from the set range, the quality of the indoor air is in a bad state, and thus the application may display a text or emit a voice through the mobile device  1300  so as to recommend the user to deactivate the AOD. 
     The application may maintain or deactivate the AOD function of the dishwasher  1200  on the basis of the command input from the user. 
     When a command of maintaining the AOD function is input from the user, the application may not transmit a separate command signal to the dishwasher  1200 , and the AOD function may be maintained in the dishwasher  1200 . 
     When a command of deactivating the AOD function is input from the user, the application transmits the command signal of deactivating the AOD function to the dishwasher  1200 , and the dishwasher  1200  does not automatically open the door during the drying process. 
     The dishwasher  1200  may dry the washing target in a state in which the AOD function is maintained or deactivated according to the performance of the respective processes described above (S 270 ). 
       FIG. 6  is a flowchart illustrating a process of drying the washing target according to the embodiment. In a drying operation of the dishwasher  1200 , after the drying is performed for a certain period of time in a state in which the door is closed, the door is automatically opened, and the drying may be continuously performed. 
     In a state in which the door is closed, the washing target may be dried by the dishwasher  1200  (S 310 ). The application may determine whether or not an AOD time point has been reached (S 320 ). The application may receive information on the washing process from the dishwasher  1200  and, accordingly, may determine whether or not a time point when the door is automatically opened by the dishwasher  1200  has been reached. 
     When the AOD time point has been reached in the drying operation for the washing target, the application may determine whether or not the AOD of the dishwasher  1200  is activated (S 330 ). The application may receive control-related information from the dishwasher  1200 , and accordingly, determine whether or not the AOD is activated. 
     When the AOD is deactivated, the application may not transmit a separate command signal to the dishwasher  1200 , and the dishwasher  1200  may continuously perform the drying in a state in which the door is not opened and is closed. 
     When the AOD is activated, the application may determine whether or not the quality of the indoor air input from the air quality detection device  1100  is within the set range (S 340 ). 
     The information on the quality of the indoor air may be transmitted from the air quality detection device  1100  to the mobile device  1300 , and the application registered in the mobile device  1300  may determine whether or not the quality of the indoor air is within the set range. 
     When the quality of the indoor air is within the set range, since the quality of the indoor air is in a good state, the application may not transmit a separate command signal to the dishwasher  1200 . In this case, the dishwasher  1200  may open the door and continuously perform the drying. 
     When the quality of the indoor air deviates from the set range, the application may recommend the user to deactivate the AOD of the dishwasher  1200  (S 350 ). When the quality of the indoor air deviates from the set range, the quality of the indoor air is in a bad state, and thus the application may display a text or emit a voice through the mobile device  1300  so as to recommend the user to deactivate the AOD. 
     The application may maintain or deactivate the AOD function of the dishwasher  1200  on the basis of the command input from the user (S 360 ). 
     When the command of deactivating the AOD function is input from the user, the application may transmit the command signal of deactivating the AOD function to the dishwasher  1200 , and the dishwasher  1200  may continuously perform the drying in a state in which the door is not opened and is closed. 
     When the command of maintaining the AOD function is input from the user, the application may not transmit a separate command signal to the dishwasher  1200 . 
     When the AOD function of the dishwasher  1200  is maintained, the door of the dishwasher  1200  may be automatically opened (S 370 ). In this case, the dishwasher  1200  may open the door and continuously perform the drying. 
       FIG. 7  is a flowchart illustrating a process of drying a washing target according to another embodiment. Unlike the case illustrated in  FIG. 6 , in the drying of the washing target illustrated in  FIG. 7 , the application may maintain or deactivate the AOD function on the basis of determination of the application itself without depending on the command of the user. 
     In a state in which the door is closed, the washing target may be dried by the dishwasher  1200  (S 410 ). The application may determine whether or not the AOD time point has been reached (S 420 ). The application may receive information on the washing process from the dishwasher  1200  and, accordingly, may determine whether or not the time point when the door is automatically opened by the dishwasher  1200  has been reached. 
     When the AOD time point has been reached in the drying operation for the washing target, the application may determine whether or not the AOD of the dishwasher  1200  is activated (S 430 ). The application may receive the control-related information from the dishwasher  1200  and, accordingly, may determine whether or not the AOD is activated. 
     When the AOD is deactivated, the application may not transmit a separate command signal to the dishwasher  1200 , and the dishwasher  1200  may continuously perform the drying in a state in which the door is not opened and is closed. 
     When the AOD is activated, the application may determine whether or not the quality of the indoor air input from the air quality detection device  1100  is within the set range (S 440 ). 
     The information on the quality of the indoor air may be transmitted from the air quality detection device  1100  to the mobile device  1300 , and the application registered in the mobile device  1300  may determine whether or not the quality of the indoor air is within the set range. 
     When the quality of the indoor air is within the set range, since the quality of the indoor air is in a good state, the application may not transmit a separate command signal to the dishwasher  1200 . In this case, the dishwasher  1200  may open the door and continuously perform the drying. 
     When the quality of the indoor air deviates from the set range, the AOD of the dishwasher  1200  may be deactivated (S 450 ). In this case, the application transmits the command signal of deactivating the AOD function to the dishwasher  1200 . 
     In operation S 450 , in order to suppress the dish washed with the washing water from being contaminated again duo to attachment of foreign substances to the dish, the application itself determines that there is a risk of contamination of the dish without receiving a command from the user, and thus closes the door. 
     In this case, the “set range of the quality of the indoor air” may be differently designated in operation S 340  and operation S 440 . For example, in operation S 440  in which the application itself deactivates the AOD function, the set range may be designated as a range in which the degree of contamination of the indoor air is high as compared to operation S 340 . 
     The dishwasher  1200  that has received the command signal of deactivating the AOD may perform the drying in a state in which the door is closed (S 460 ). That is, when the AOD of the dishwasher  1200  is deactivated, in a state in which the door of the dishwasher  1200  is closed, the dishwasher  1200  may complete the drying of the washing target. 
     When the AOD is deactivated by the application, the application may notify the user of the fact that the AOD is deactivated (S 470 ). Since the deactivating of the AOD is not expected by the user and may be a measure contrary to an intention of the user, it is necessary to notify the user of this fact. 
     The application may notify the user of the fact that the AOD is deactivated using a text or a voice through the interface of the mobile device  1300 . In this regard, when the user wants to open the door of the dishwasher  1200  in the drying operation, the user may perform necessary actions such as deactivating the linking between the application and the dishwasher  1200 . 
       FIG. 8  is a flowchart illustrating a process of drying a washing target according to still another embodiment. Each operation illustrated in  FIG. 8  may be performed during the process of drying the washing target in a state in which the door of the dishwasher  1200  is opened. 
     The dishwasher  1200  may dry the washing target in a state in which the door is opened (S 510 ). The application may determine whether or not the quality of the indoor air input from the air quality detection device  1100  is within the set range (S 520 ). 
     The information on the quality of the indoor air may be transmitted from the air quality detection device  1100  to the mobile device  1300 , and the application registered in the mobile device  1300  may determine whether or not the quality of the indoor air is within the set range. 
     When the quality of the indoor air is within the set range, since the quality of the indoor air is in a good state, the application may not transmit a separate command signal to the dishwasher  1200 . In this case, the dishwasher  1200  may continuously perform the drying in a state in which the door is opened. 
     When the quality of the indoor air deviates from the set range, the application may recommend the user to deactivate the AOD of the dishwasher  1200  (S 530 ). When the quality of the indoor air deviates from the set range, the quality of the indoor air is in a bad state, and thus the application may display a text or emit a voice through the mobile device  1300  so as to recommend the user to deactivate the AOD. 
     The application may maintain or deactivate the AOD function of the dishwasher  1200  on the basis of the command input from the user (S 540 ). 
     When the command of deactivating the AOD function is input from the user, the application may transmit the command signal of deactivating the AOD function to the dishwasher  1200 . 
     When the AOD function of the dishwasher  1200  is deactivated, the door of the dishwasher  1200  may be closed (S 550 ). The dishwasher  1200  may continuously perform the drying process in a state in which the door is closed. In this case, even after the drying is completed and all of the processes of washing the dish are completed, the door may remain in a closed state. 
     When the command of maintaining the AOD function is input from the user, the application may not transmit a separate command signal to the dishwasher  1200 . In this case, the dishwasher  1200  may maintain the door to be open and continuously perform the drying. In this case, even after the drying is completed and all of the processes of washing the dish are completed, the door may remain in an open state. 
       FIG. 9  is a flowchart illustrating a process of drying the washing target according to yet another embodiment. Each operation illustrated in  FIG. 9  may be performed during the process of drying the washing target in a state in which the door of the dishwasher  1200  is opened. 
     Unlike the case illustrated in  FIG. 8 , in the drying of the washing target illustrated in  FIG. 9 , the application may maintain or deactivate the AOD function on the basis of determination of the application itself without depending on the command of the user. 
     The dishwasher  1200  may dry the washing target in a state in which the door is opened (S 610 ). The application may determine whether or not the quality of the indoor air input from the air quality detection device  1100  is within the set range (S 620 ). 
     The information on the quality of the indoor air may be transmitted from the air quality detection device  1100  to the mobile device  1300 , and the application registered in the mobile device  1300  may determine whether or not the quality of the indoor air is within the set range. 
     When the quality of the indoor air is within the set range, since the quality of the indoor air is in a good state, the application may not transmit a separate command signal to the dishwasher  1200 . In this case, the dishwasher  1200  may continuously perform the drying in a state in which the door is opened. In this case, even after the drying is completed and all of the processes of washing the dish are completed, the door may remain in an open state. 
     When the quality of the indoor air deviates from the set range, the door may be closed (S 630 ). The application may transmit the command signal of deactivating the AOD function to the dishwasher  1200 , and the dishwasher  1200  may close the opened door in response to the command signal. 
     When the quality of the indoor air deviates from the set range, and thus the door is closed, the drying of the washing target may be completed in a state in which the door of the dishwasher  1200  is closed. In this case, even after the drying is completed and all of the processes of washing the dish are completed, the door may remain in a closed state. 
     In operation S 630 , in order to suppress the dish washed with the washing water from being contaminated again due to attachment of foreign substances to the dish, the application itself determines that there is a risk of contamination of the dish without receiving a command from the user, and thus closes the door. 
     In this case, the “set range of the quality of the indoor air” may be differently designated in operation S 520  and operation S 620 . For example, in operation S 620  in which the application itself deactivates the AOD function, the set range may be designated as a range in which the degree of contamination of the indoor air is high as compared to operation S 520 . 
     When the door is closed, the application may notify the user of the fact that the door is closed (S 640 ). Since the performance of the drying in a state in which the door is opened and then the closing of the door again are not expected by the user, and may be a measure contrary to an intention of the user, it is necessary to notify the user of this fact. 
     The application may notify the user of the fact that the AOD is deactivated using a text or a voice through the interface of the mobile device  1300 . In this regard, when the user wants to open the door of the dishwasher  1200  in the drying operation, the user may perform necessary actions such as deactivating the linking between the application and the dishwasher  1200 . 
     In the embodiment, by controlling an operation of the door of the dishwasher  1200  using the mobile device  1300  carried by the user, a user&#39;s convenience can be increased. 
     Further, in the embodiment, an air purifier or an air conditioner that is a separate product that is already installed or is installable or an air contamination measurement device that is provided in each house in an apartment complex is used as the air quality detection device  1100  that detects the quality of the indoor air. Thus, since there is no need to add a separate device to the dishwasher  1200 , manufacturing costs of the dishwasher  1200  can be reduced. 
     As described above, the present disclosure has been described with reference to the accompanying drawings, but the present disclosure is not limited by the embodiments disclosed in the present specification and the drawings, and various modifications may be made by those skilled in the art within the scope of the technical spirit of the present disclosure. In addition, although the effects according to the configuration of the present disclosure have not been explicitly described while the embodiments of the present disclosure are described, it is apparent that the effects predictable by the corresponding configuration should also be recognized.