Dishwasher

Abstract

A dishwasher according to an aspect of the present disclosure comprises: a tub for providing a washing chamber opened forward; a door for opening and closing the washing chamber; a handle provided on the door; a handle motor for driving the handle in the front-rear direction; a first sensor; and a second sensor having a sensing distance different from that of the first sensor, wherein: when the body is detected by the first sensor, the handle is withdrawn forward from a first position to a second position; and when the body is detected by the second sensor, the handle is moved forward from the second position to a third position.

Description

dishwasher

[0001] The present disclosure relates to a dishwasher, and more particularly, to a dishwasher having a handle.

[0002] A dishwasher is a device that sprays washing water onto dishes and other objects stored in a tub to remove food residue and wash the objects.

[0003] The dishwasher has a door for opening and closing the tub. A handle is provided on the door for the user to open and close the door.

[0004] Most modern dishwashers have doors that open and close automatically after the wash cycle is complete, but in some cases, the user must open the door manually. Therefore, it is recommended to have a handle regardless of whether the door opens and closes automatically.

[0005] Typically, the handle has a space for the user's hand to fit through, and for user accessibility, this space is often exposed to the outside.

[0006] Prior document 1 (EP2096360B1) discloses a dishwasher having a door handle mounted on the door, and prior document 2 (DE102021102827B4) discloses a dishwasher having a control panel for opening and closing the entrance of the door handle.

[0007] Previous literature has shown that door handles cannot automatically move in various ways depending on the dishwasher's operating status or the user's intention, limiting their ability to prevent safety accidents such as finger entrapment. Furthermore, these documents fail to provide any other functions or services beyond opening and closing the door.

[0008] The problem that the present disclosure seeks to solve is to provide a dishwasher whose door can be conveniently opened and closed using an automatically moving handle.

[0009] The problem that the present disclosure seeks to solve is to provide a dishwasher that can prevent accidents caused by misrecognizing a baby or a pet when the handle is automatically operated.

[0010] The problem that the present disclosure seeks to solve is to provide a dishwasher in which the handle is retracted inside the door when not in use, thereby maintaining a seamless design.

[0011] The problem that the present disclosure seeks to solve is to provide a dishwasher in which a handle can be moved to an optimal position depending on the operating state and the user's intention.

[0012] The problem that the present disclosure seeks to solve is to provide a dishwasher that allows a user to intuitively know the operating status.

[0013] The problem that the present disclosure seeks to solve is to provide a dishwasher that prevents a user's finger from being caught in an automatically moving handle.

[0014] The tasks of the present disclosure are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the description below.

[0015] In order to achieve the above or other purposes, a dishwasher according to one aspect of the present disclosure automatically moves a handle provided on a door when a body is detected, so that a user can conveniently hold the handle and open the door.

[0016] In order to achieve the above or other purposes, a dishwasher according to one aspect of the present disclosure is provided with a plurality of sensors, and the handle moves in steps in response to the sensing sequence, thereby preventing collision, hand pinching, and damage.

[0017] In order to achieve the above or other purposes, a dishwasher according to one aspect of the present disclosure includes a tub providing a washing room open to the front, a door for opening and closing the washing room, a handle provided on the door, a handle motor for driving the handle in a forward and backward direction, a first sensor provided on the door, and a second sensor positioned above the first sensor.

[0018] In order to achieve the above or other purposes, a dishwasher according to one aspect of the present disclosure includes a tub providing a washing room open to the front, a door for opening and closing the washing room, a handle provided on the door, a handle motor for driving the handle in a forward and backward direction, a sensor, and a second sensor having a different detection distance from the first sensor. When a body is detected by the first sensor, the handle is extended forward from a first position to a second position.

[0019] When a body is detected by the second sensor, the handle moves forward from the second position to the third position.

[0020] The detection distance of the first sensor may be longer than the detection distance of the second sensor.

[0021] The second sensor may be positioned above the first sensor.

[0022] The first sensor may be provided on the door, the first sensor may be located on the door, and the second sensor may be located above the first sensor.

[0023] The above door may further include a door cover providing a front surface.

[0024] The first sensor may include two sensors arranged at a predetermined distance apart on the lower surface of the door cover.

[0025] The second sensor may be placed inside the handle.

[0026] The interval between the first position and the second position may be shorter than the interval between the second position and the third position.

[0027] The dishwasher further includes an interface for receiving a command, and when there is a washing operation command, the handle can be moved rearward from the third position to the second position.

[0028] When the handle is moved to the second position and the body is not detected by the second sensor within a reference time, the handle can be moved backward from the second position to the first position.

[0029] When a body is detected by the first sensor, the second sensor may be turned on.

[0030] When the handle is moved to the second position and the body is not detected by the second sensor within a reference time, the handle may move backward from the second position to the first position, and the second sensor may remain on.

[0031] During the washing operation, if the second sensor detects a body, the washing operation is stopped, and the handle can be moved forward from the second position to the third position.

[0032] The dishwasher may further include lighting including a light source that emits light in a predetermined pattern when the handle is moved to the second position when a body is detected by the first sensor.

[0033] Depending on the operating status of the dishwasher, the color and length of the light emitted by the lighting may vary.

[0034] When a body is detected by the second sensor, the lighting can output light in a predetermined pattern while the handle is moved to the third position.

[0035] When the handle is moving, if a body is detected by the first sensor and no body is detected by the second sensor, an operation may be performed according to the input, otherwise, a safety operation may be performed to stop the movement of the handle.

[0036] The dishwasher may further include a haptic motor that vibrates the handle, and the safety operation may include an operation of the haptic motor vibrating the handle.

[0037] The dishwasher may further include a door switch that detects whether the door is opened or closed, and a handle switch that detects whether the handle is moved.

[0038] In order to achieve the above or other purposes, a dishwasher according to one aspect of the present disclosure includes a tub providing a washing room open to the front, a door for opening and closing the washing room, a handle provided on the door and positioned at a first position in a first door mode, a handle motor for driving the handle in a forward and backward direction, a first sensor provided on the door, and a second sensor located above the first sensor and in an off state in the first door mode, wherein when a body is detected by the first sensor, in the first door mode, the handle is pulled forward to a second position, and the second sensor is switched to a second door mode in which the second sensor is turned on.

[0039] In the second door mode, when a body is detected by the second sensor, the handle is switched to the third door mode in which it moves forward from the second position to the third position.

[0040] The dishwasher further includes an interface for receiving a command, and a door switch for detecting whether the door is opened or closed, and in the third door mode, when the door is opened and closed and a washing operation command is provided, the handle can be switched to an operation mode in which the handle moves from the third position to the second position and the second sensor remains in an on state.

[0041] In the second door mode, if a body is not detected by the second sensor within a reference time, the mode may be switched to the first door mode.

[0042] In the second door mode, if a body is not detected by the second sensor within a reference time, the handle may be moved backward from the second position to the first position, and the second sensor may be switched to a fourth door mode in which the second sensor remains on.

[0043] According to at least one of the embodiments of the present disclosure, a dishwasher can be provided in which the door can be conveniently opened and closed using an automatically moving handle.

[0044] According to at least one of the embodiments of the present disclosure, by using sensors having different at least one of a position, a detection order, and a detection distance, an accident caused by misrecognition of a baby or a pet when the handle is automatically driven can be prevented.

[0045] According to at least one of the embodiments of the present disclosure, the handle can be retracted inside the door when not in use to maintain a seamless design.

[0046] According to at least one of the embodiments of the present disclosure, the handle can be moved to an optimal position depending on the operating state and the user's intention.

[0047] According to at least one of the embodiments of the present disclosure, a user can intuitively know the operating state.

[0048] According to at least one of the embodiments of the present disclosure, it is possible to prevent a problem in which a user's finger may be caught in an automatically moving handle.

[0049] The effects of the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

[0050] Other effects will be apparent to those skilled in the art from the description of the claims.

[0051] FIG. 1 is a perspective view of a dishwasher according to one embodiment of the present disclosure.

[0052] FIG. 2 is a perspective view showing a dishwasher door in an open state according to one embodiment of the present disclosure.

[0053] FIG. 3 is a schematic diagram showing the interior of a dishwasher according to one embodiment of the present disclosure.

[0054] FIG. 4 is an internal block diagram of a dishwasher according to an embodiment of the present disclosure.

[0055] FIG. 5 and FIG. 6 are drawings for reference in the description of sensors according to one embodiment of the present disclosure.

[0056] FIGS. 7 to 9 are drawings for reference in the description of the position and movement of the handle according to a situation according to an embodiment of the present disclosure.

[0057] FIG. 10 is a flowchart of a dishwasher control method according to an embodiment of the present disclosure.

[0058] FIG. 11 is a flowchart of a dishwasher control method according to an embodiment of the present disclosure.

[0059] FIGS. 12 to 16 are drawings for reference in the description of a lighting operation according to an embodiment of the present disclosure.

[0060] FIG. 17 is a flowchart of a dishwasher control method according to one embodiment of the present disclosure.

[0061] FIG. 18 is a flowchart of a dishwasher control method according to an embodiment of the present disclosure.

[0062] FIG. 19 is a flowchart of a dishwasher control method according to one embodiment of the present disclosure.

[0063] FIG. 20 is a flowchart of a dishwasher control method according to one embodiment of the present disclosure.

[0064] FIG. 21 is a flowchart of a dishwasher control method according to one embodiment of the present disclosure.

[0065] FIG. 22 is a flowchart of a dishwasher control method according to one embodiment of the present disclosure.

[0066] FIG. 23 is a flowchart of a dishwasher control method according to one embodiment of the present disclosure.

[0067] FIG. 24 is a flowchart of a dishwasher control method according to one embodiment of the present disclosure.

[0068] FIG. 25 is a flowchart of a dishwasher control method according to an embodiment of the present disclosure.

[0069] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the attached drawings. However, the present disclosure is not limited to these embodiments and can be modified in various forms.

[0070] In the drawings, parts that are not related to the description are omitted in order to clearly and concisely explain the present disclosure, and the same drawing reference numerals are used for the same or extremely similar parts throughout the specification.

[0071] Meanwhile, the suffixes "module" and "part" used in the following description are given solely for the convenience of writing this specification, and do not impart any particularly significant meaning or role to them. Therefore, the terms "module" and "part" may be used interchangeably.

[0072] Additionally, while terms such as "first" and "second" may be used in this specification to describe various elements, these elements are not limited by these terms. These terms are used only to distinguish one element from another.

[0073] FIG. 1 is a perspective view of a dishwasher according to an embodiment of the present disclosure. FIG. 2 is a perspective view showing the door of the dishwasher according to an embodiment of the present disclosure in an open state. FIG. 3 is a schematic diagram showing the interior of the dishwasher according to an embodiment of the present disclosure.

[0074] Referring to FIG. 1, the dishwasher includes a tub (1). The tub (1) may provide a washing chamber (11). The washing chamber (11) may be provided on the inside of the tub (1).

[0075] The tub (1) may have a hexahedral shape with one side open. The front of the tub (1) may be open.

[0076] The washing room (11) can be opened forward (see Fig. 2). The direction facing rearward from the opening of the washing room (11), i.e., the front-back direction, can be referred to as the depth direction of the washing room (11).

[0077] The dishwasher may include a door (2) for opening and closing the washing compartment (11). The door (2) may be provided at the front of the tub (1). The door (2) may be rotatably coupled to the front of the tub (1).

[0078] The lower portion of the door (2) may be coupled to the tub (1). The door (2) may be hinged to the front lower portion of the tub (1). The dishwasher may include a hinge (28) that rotatably couples the door (2) to the tub (1).

[0079] The door (2) can be opened so that the upper part of the door (2) faces forward (see Fig. 2). For example, the door (2) can be rotated downward to close the tub (1). The door (2) can be rotated upward to open the tub (1).

[0080] The door (2) may include a front surface (211). The door (2) may include a door cover (21). The door cover (21) may provide a front surface (211) of the door (2). The door cover (21) may provide a side surface (218) of the door (2). The door cover (21) may provide an upper surface (213) of the door (2).

[0081] The dishwasher may include a handle (4). The handle (4) may be provided at the front of the door (2). The handle (4) may be provided at the upper portion of the door (2). The handle (4) may be provided at the upper portion of the front surface (211) of the door. The upper portion (212) of the front surface of the door (2) may be arranged above the handle (4).

[0082] The dishwasher may include a base (12). The base (12) may provide a bottom surface of the dishwasher.

[0083] The bottom of the tub (1) may be spaced upward from the base (12). A space (13) may be provided between the bottom of the tub (1) and the base (12). Components such as a PCB (14, or main controller), a sump (61), a pump (62), etc., which will be described later, may be placed in the space. Hereinafter, the space (13) is referred to as a machine room (13).

[0084] An interface (23) may be provided on the upper portion of the door (2). The interface (23) may be arranged on the upper side (213) of the door.

[0085] The interface (23) can receive commands from a user. The interface (23) can provide the user with information related to the dishwasher.

[0086] For example, a user can input commands for washing operations and options through the interface (23). For example, the interface (23) can display information about washing operations and options.

[0087] The main controller (14) can control the dishwasher. The main controller (14) can receive commands from the user through the interface (23). The main controller (14) can provide information about the dishwasher to the user through the interface (23).

[0088] The configurations described below can be controlled by the main controller (14).

[0089] Referring to FIG. 2, the dishwasher may further include a casing (15). The casing (15) may be positioned on the outside of the tub (1).

[0090] The casing (15) may include a cabinet (16) and a top plate (17). The cabinet (16) may cover a side wall of the tub (1). The top plate (17) may cover the upper surface of the tub (1).

[0091] As described above, the washing room (11) is opened forward, and the door (2) can open and close the washing room (11).

[0092] The dishwasher may include a rack (67) placed in the washing room (11). Objects to be washed, such as bowls, plates, and cutlery, may be placed on the rack (67).

[0093] The rack (67) may include a first rack (671). The first rack (671) may be placed in the lower portion of the washing room (11).

[0094] The rack (67) may include a second rack (672) arranged above the first rack (671). The height of the position where the second rack (672) is arranged may be adjusted.

[0095] The dishwasher may include a spray arm (661, 662). The spray arm (661, 662) may spray washing water toward the rack (67).

[0096] The spray arms (661, 662) can be placed on the lower side of the rack (67). The spray arms (661, 662) can spray washing water upward.

[0097] The injection arm (661, 662) may include a first injection arm (661). The first injection arm (661) may be placed on the lower side of the first rack (671).

[0098] The injection arm (661, 662) may include a second injection arm (662). The second injection arm (662) may be positioned on the lower side of the second rack (672).

[0099] The door (2) can be opened so that the upper part of the door (2) faces forward.

[0100] The door (2) may include an inner panel (22). The inner panel (22) may face upward when the door (2) is open. When a user places an object to be washed on the rack, water falling from the object to be washed or the rack may fall on the inner panel (22).

[0101] The dishwasher may include a steam nozzle (665). The steam nozzle (665) may be provided on the door (2). The steam nozzle (665) may be provided on the inner panel (22).

[0102] The dishwasher may include a dispenser (26). The dispenser (26) may be provided in the inner panel (22).

[0103] Referring to FIG. 3, the rack (67) can be pulled out forward from the washing room (11). The rack (67) can be brought in rearward and placed in the washing room (11).

[0104] The rack (67) may include a third rack (673). The third rack (673) may be arranged above the first rack (671). The third rack (673) may be arranged above the second rack (672). The third rack (673) may be arranged at the uppermost side among the plurality of racks (67).

[0105] The spray nozzle (661, 662) may include a nozzle. The nozzle may spray the washing water.

[0106] The injection rock (661, 662) may be provided to be rotatable.

[0107] The first spray arm (661) can be placed on the lower side of the first rack (671). The first spray arm (661) can spray washing water toward the first rack (671).

[0108] The first spray arm (661) may be provided to be rotatable. The first spray arm (661) may be rotated by a motor. Alternatively, the first spray arm (661) may be rotated by the counter force of the force with which the washing water is sprayed from the first nozzle (6613).

[0109] The second spray arm (662) can be placed on the lower side of the second rack (672). The second spray arm (662) can be coupled to the second rack (672). The second spray arm (662) can spray washing water toward the second rack (672).

[0110] The second spray arm (662) may be provided to be rotatable. It may rotate by the reaction force of the force with which the washing water is sprayed from the second nozzle (6623). Alternatively, the second spray arm (662) may rotate by a motor.

[0111] The dishwasher may include a top nozzle (663). The top nozzle (663) may be positioned above the rack (67). The top nozzle (663) may be provided on the ceiling of the washing room (11). The top nozzle (663) may spray washing water downward. The top nozzle (663) may spray washing water toward the rack (67). The top nozzle (663) may spray washing water toward the third rack (673).

[0112] The door (2) may include a door cover (21). When the door (2) closes the washing room (11), the door cover (21) may be exposed to the outside.

[0113] The door (2) may include an inner panel (22). When the door (2) closes the washing room (11), the inner panel (22) may face the washing room (11). When the door (2) closes the washing room (11), the inner panel (22) may provide the front surface of the washing room (11).

[0114] The dishwasher may include a dispenser (26). The dispenser (26) may accommodate detergent. The dispenser (26) may accommodate tablet-type detergent. Alternatively, the dispenser may accommodate powdered detergent.

[0115] Meanwhile, some of the nozzles of the spray gun (661, 662) may be directed toward the dispenser (26) provided in the door (2).

[0116] The dishwasher can supply steam to the washing chamber (11). The steam nozzle (665) can supply steam to the washing chamber (11). The steam nozzle (665) is provided at the front of the washing chamber (11) and can supply steam toward the rear. The steam nozzle (665) is provided at the lower part of the washing chamber (11) and can supply steam toward the upper part. The steam nozzle (665) is provided at the lower part of the front of the washing chamber (11) and can supply steam toward the upper part and rear.

[0117] A steam nozzle (665) may be provided on the door (2). The steam nozzle (665) may be provided on the inner panel (22). The steam nozzle (665) may be provided on the lower part of the inner panel (22). The steam nozzle (665) may be arranged at an angle with respect to the horizontal.

[0118] The dishwasher may include a sump (61). The sump (61) may receive water from an external water source such as a tap. The sump (61) may store water supplied from an external source.

[0119] The sump (61) can receive water from an external water source through a water supply pipe (64). The water supply pipe (64) can be connected to the external water source. The water supply pipe (64) can connect the external water source and the sump (61).

[0120] The water supply valve (641) can control the water supply pipe (64). The water supply valve (641) can control the flow of water from an external water source to the sump (61).

[0121] A sump (61) may be provided on the lower side of the tub (1). The sump (61) may be arranged on the lower side of the bottom of the tub (1). The sump (61) may be arranged in the machine room (13). The sump (61) may be connected to the bottom of the tub (1) and may be arranged in the machine room (13).

[0122] The sump (61) can store water drained from the washing room (11).

[0123] The dishwasher may include a filter (611). The filter (611) may filter out foreign substances from water flowing from the washing chamber (11) to the sump (61). The filter (611) may be placed in the sump.

[0124] The dishwasher may include a pump (62) that supplies wash water to the wash chamber (11). The pump (62) may pump water from the sump (61). The pump (62) may pump water and supply it to the spray arms (661, 662). The pump (62) may pump water and supply it to the top nozzle (663).

[0125] The pump (62) may include an impeller (623), a pump housing (625) that accommodates the impeller (623), and a cleaning motor (621) that rotates the impeller (623). The cleaning motor (621) may be a motor whose rotational speed may be variable. For example, the cleaning motor (621) may be a brushless DC motor (BLDC motor).

[0126] The dishwasher may include a heater (63) for heating wash water. The heater (63) may be connected to a pump (62). The heater (63) may heat water introduced into the pump (62).

[0127] The switching valve (65) can be connected to the washing pump (62). The switching valve (65) can receive washing water from the pump (62).

[0128] The switching valve (65) can be connected to the spray arms (661, 662) and the top nozzle (663). The switching valve (65) can distribute the washing water. The switching valve (65) can selectively supply the washing water to at least one of the first spray arm (661), the second spray arm (662), and the top nozzle (663).

[0129] The pump inlet pipe (642) can connect the sump (61) and the pump (62). When the pump (62) operates, water in the sump (61) can flow into the pump (62) through the inlet pipe (642).

[0130] The discharge pipe (644) can be connected to the pump (62). The discharge pipe (644) can guide water discharged from the pump (62) toward the spray arms (661, 662) and the top nozzle (663).

[0131] The discharge pipe (644) can be connected to the switching valve (65). The discharge pipe (644) can connect the pump (62) and the switching valve (65).

[0132] The connecting pipes (651, 652, 653) can connect the injection rock (661, 662) and the top nozzle (663) to the switching valve (65).

[0133] The connecting pipes (651, 652, 653) may include a first connecting pipe (651) connected to a first injection arm (661). The first connecting pipe (651) may be provided inside the first injection arm (661).

[0134] The connecting pipes (651, 652, 653) may include a second connecting pipe (652) connected to a second injection arm (662). The second connecting pipe (652) may be provided on the rear wall of the tub (1).

[0135] The connecting pipes (651, 652, 653) may include a third connecting pipe (653) connected to the top nozzle (663). The third connecting pipe (653) may be provided on the upper surface of the tub (1).

[0136] When the pump (62) operates, the washing water discharged from the pump (62) can flow into the switching valve (65). The washing water flowing into the switching valve (65) can flow into at least one of the plurality of connecting pipes (651, 652, 653) by the switching valve (65).

[0137] When the washing water flows into the first connecting pipe (651), the washing water can be sprayed from the nozzle (6613) of the first spray arm (661). When the washing water flows into the second connecting pipe (652), the washing water can be sprayed from the nozzle (6623) of the second spray arm (662). When the washing water flows into the third connecting pipe (653), the washing water can be sprayed from the top nozzle (663) on the bottom surface.

[0138] Washing water sprayed into the washing room (11) collects on the floor and flows into the sump (61). Washing water flowing into the sump (61) is sprayed into the washing room by the pump (62) and can be circulated again.

[0139] The sump (61) can be connected to a drain pump (69). A drain pipe (691) can connect the sump (61) and the drain pump (69). When the drain pump (69) operates, water in the sump (61) can be drained outside the dishwasher.

[0140] A dishwasher according to one embodiment of the present disclosure includes a door (2), a handle (4) provided on the door (2), and a handle motor (4) for driving the handle (4).

[0141] The door (2) may include a door cover (21) providing a front surface (211), an upper surface (213), and a side surface (218). The front surface (211) of the door (2) may include an upper portion (212) disposed above the handle (4).

[0142] An interface (23) can be placed on the upper surface (213) of the door (2).

[0143] The door (2) may include an inner panel (22). The inner panel (22) may have a narrower width in the left-right direction compared to the door cover (21). Hereinafter, the left-right direction is also referred to as the width direction of the door.

[0144] The handle (4) may extend in the width direction of the door (2). Both side ends of the handle (4) may be adjacent to the side surface (218) of the door (2). Alternatively, the handle (4) may extend to the side surface (218) of the door (2).

[0145] FIG. 4 is an internal block diagram of a dishwasher according to an embodiment of the present disclosure, showing major components for door control.

[0146] Referring to FIG. 4, the dishwasher may include a main controller (14) that controls overall operation. The main controller (14) may control a pump (62), a heater (63), a water supply valve (641), a switching valve (65), etc., in response to user commands input through an interface (23), and may perform washing operations (washing cycles), etc.

[0147] The interface (23) may include a mechanical input means (or, mechanical key), a jog wheel, a jog switch, etc.) and a touch input means. As an example, the touch input means may be composed of a virtual key, a soft key, or a visual key displayed on a touch screen through software processing, or a touch key placed on a part other than the touch screen.

[0148] Additionally, the main controller (14) can receive a user's voice input through a microphone (232) and control the dishwasher in response to the voice input. The microphone (232) can process an external acoustic signal into electrical voice data.

[0149] The speaker (231) can output various notifications and information as sound.

[0150] According to an embodiment, the speaker (231) and the microphone (232) may be configured as part of the interface (23).

[0151] Meanwhile, the door (2) may be equipped with a door controller (24) that controls the operation of the door. The door controller (24) is mounted on a predetermined PCB, and the door controller (24) PCB may be accommodated inside the door (2). The door controller (24) and the main controller (14) are connected via signal lines, and can transmit and receive various signals. In addition, the door controller (24) may be connected to the main controller (14) via a power line, and may be supplied with power.

[0152] According to an embodiment, the door controller (24) is integrated into the main controller (14), so that the operation of the door (2) can be directly controlled from one controller (14).

[0153] The door (2) is equipped with a handle motor (41) that drives the handle (4) in the forward and backward directions. The door controller (24) can control the handle motor (41) to move the handle (4) forward or backward.

[0154] When not in use, the handle (4) does not protrude from the front surface (211), but is retracted into the door (2), and when in use, it is pulled out to the front of the front surface (211). When not in use, the handle (4) is retracted into the door (2), thereby reducing the possibility of collision and damage to the handle (4), and maintaining a seamless design.

[0155] Since the handle (4) pops up when in use, the handle (4) may be named a pop-up handle (4), and the handle motor (41) may be named a pop-up handle motor (41).

[0156] Meanwhile, the handle (4) may be equipped with lighting (42) including one or more light sources (e.g., LED). The lighting (42) can indicate the current status of the dishwasher and intuitively provide various information to the user through the color and pattern of the light it outputs.

[0157] The handle (4) may be equipped with a haptic motor (43). Accordingly, in an emergency situation, the haptic motor (43) vibrates, allowing the user holding the handle (4) to immediately recognize the emergency situation.

[0158] The dishwasher is equipped with a number of sensors (25). The door (2) is equipped with a first sensor (251) and a second sensor (252) that detect a body in front of the dishwasher. The first sensor (251) and the second sensor (252) can detect the presence of a body or object in a non-contact manner.

[0159] The door controller (24) can control the motor (41, 43) and interface (23) of the door (2) according to the control of the main controller (14). The door controller (24) can control the handle motor (41) based on data detected by the first and second sensors (251, 252).

[0160] The second sensor (252) may be located above the first sensor (251). The second sensor (252) may be placed in an area adjacent to the handle (4). More preferably, the second sensor (252) may be provided on the handle (4).

[0161] The first sensor (251) and the second sensor (252) may use sensors that identify the position and / or motion of an object or body in a non-contact manner, such as a position sensor, a proximity sensor, an infrared sensor, an ultrasonic sensor, a heat detection sensor, a radar sensor, or a lidar sensor.

[0162] More preferably, the second sensor (252) is a safety sensor for preventing malfunction, and a sensor that can be applied with a hole-free design structure, such as a short-range electric field sensor (gesture sensor), an electrostatic touch sensor, etc., can be used, and can be provided inside the handle (4). The electrostatic touch sensor can detect electrostatic capacitance and detect the human body by detecting the difference between the minute electrostatic capacitance change of the human body and the set value. The short-range electric field sensor can perform gesture / location tracking by recognizing multiple points using a short-range electric field.

[0163] FIG. 5 and FIG. 6 are drawings for reference in the description of sensors according to one embodiment of the present disclosure.

[0164] Fig. 5 is an example of a case where the first sensor (251) is placed on the lower side of the door cover (21). Fig. 5 (a) is a front view of the lower side of the door cover (21), and Fig. 5 (b) is a side view of the lower side of the door cover (21).

[0165] Referring to (a) and (b) of FIG. 5, a first sensor (251) is arranged on the bottom surface (219) of the door cover (21). The first sensor (251) may include two sensors (2511, 2512) arranged at a predetermined distance apart on the bottom surface (219) of the door cover (21).

[0166] The first sensor (251) can detect whether there is a body in front of it with a first detection distance (R1). The first detection distance (R1) is a distance at which the first sensor (251) can detect a body. When a body is within the first detection distance (R1), the first sensor (251) can detect it. The first sensor (251) can detect a body such as a user's legs or feet located within the first detection distance (R1) in front of it, and transmit the detection result to the door controller (24).

[0167] Depending on the size of the door cover (21), a plurality of first sensors (2511, 2512) may be spaced apart and arranged. Referring to Fig. 5, on the bottom surface (219) of the door cover (21), a first-first sensor (2511) and a first-second sensor (2512) are spaced apart and arranged, respectively.

[0168] Since the user's body, including the legs and feet, has a certain size even for a baby, even if multiple first sensors (2511, 2512) are placed so that there is an additional gap (d2, d3) that is not sensed, the body located in front of the dishwasher can be monitored.

[0169] If the first-first sensor (2511) and the first-second sensor (2512) have a sensing range of a circle with a predetermined radius (d1) when viewed from the front, the first-first sensor (2511) and the first-second sensor (2512) may be arranged at each side of the door cover (21) at a distance of a predetermined distance (d3) from the radius (d1). In addition, the first-first sensor (2511) and the first-second sensor (2512) may be arranged at a distance of a predetermined distance (d2) from the sum (2d1) of their respective radii (d1).

[0170] Fig. 6 illustrates an example of a case where a second sensor (252) is placed inside a handle (4). Referring to Fig. 6, the handle includes a front cover (44), and the second sensor (252) can be placed on the inner surface of the front cover (44).

[0171] The second sensor (252) may include a plurality of sensors extending in the width direction or spaced apart in the width direction.

[0172] The first sensor (251) and the second sensor (252) may have different detection distances. The detection distance (R1) of the first sensor (251) may be longer than the detection distance (R2) of the second sensor (252). The second detection distance (R2) is a distance at which the second sensor (252) can detect a body, and when a body is within the second detection distance (R2), the second sensor (252) can detect it.

[0173] The first sensor (251) can detect a body from a long distance as a primary sensor, and the second sensor (252) can detect a body from a short distance as a secondary sensor. The first sensor (251) and the second sensor (252) may use different types of sensing methods.

[0174] By combining sensors (251, 252) with different detection distances and arranging each at an optimal location, it is possible to appropriately respond to various situations. The first sensor (251) may have a first detection distance (R1) forward, and the second sensor (252) may have a second detection distance (R2) forward.

[0175] FIGS. 7 to 9 are drawings for reference in the description of the position and movement of the handle according to a situation according to an embodiment of the present disclosure.

[0176] First, referring to (a) and (b) of FIGS. 6 and 7, when not in use, in the default state, the handle (4) is positioned at the first position (P1), and the first sensor (251) is in the on state and can detect whether a body is present at the first detection distance (R1).

[0177] The first position (P1) is a position where the front cover (44) of the handle (4) forms a front surface (211) with the door cover (21), and the front cover (44) can be positioned along an imaginary line of the front surface (211).

[0178] Referring to (a) of FIG. 6 and FIG. 8, when a body is detected by the first sensor (251), the handle motor (41) is driven, and the handle (4) is pulled forward from the first position (P1) to the second position (P2).

[0179] According to an embodiment, the second sensor (252) may be turned off and then turned on when a body is detected by the first sensor (251). The second sensor (252), which is a secondary sensor, may be turned on only when necessary, thereby reducing power consumption.

[0180] Referring to FIG. 6 and FIG. 8 (b), when the handle (4) is at the first position (P1), if the body is detected by the second sensor (252), the handle motor (41) is driven, so that the handle (4) can move further forward.

[0181] Referring to (a) and (b) of FIG. 6 and FIG. 9, when a body is detected by the second sensor (252), the handle motor (41) is driven, and the handle (4) moves forward from the second position (P2) to the third position (P3).

[0182] If the automatic pop-up of the handle (4) is controlled based on the sensing data of one sensor or one type of sensor, when a baby or pet is at a specific location in front of the dishwasher, the handle (4) may move and the door (2) may open or close, causing a collision or entrapment.

[0183] According to the present disclosure, an accident can be prevented by controlling automatic movement of the handle (4) based on at least one of sensing, sensing order, and sensing time of sensors (251, 252) placed at different locations.

[0184] For example, if the first sensor (251) detects a body from a distance, there is a possibility that the dishwasher is being used, so the handle (4) moves slightly to a second position (P2) where no space (46) is formed for the user's hand to hold the handle (4).

[0185] Afterwards, the second sensor (252) inside the handle (4) checks for a second time whether the user's hand is detected at a close range, and the handle (4) moves to a third position (P3) where the user can sufficiently hold the handle (4) to open the door (2), thereby allowing the user to conveniently open the door (2).

[0186] When the handle (4) is moved forward to the third position (P3), a space (46) is formed between the support members (45) on both sides of the handle (4) so ​​that the hand can hold the handle (4).

[0187] The handle (4) can move forward and backward within a range (d13) between the first position (P1) and the third position (P3).

[0188] The distance (d12) between the first position (P1) and the second position (P2) is shorter than the distance (d23) between the second position (P2) and the third position (P3). That is, the distance (d12) that the handle (4) moves between the first position (P1) and the second position (P2) is shorter than the distance (d23) that the handle (4) moves between the second position (P2) and the third position (P3).

[0189] Not only the position of the handle (4), but also the light output status of the lighting (42) can be adjusted according to the situation. By emitting light, the lighting (42) allows the user to intuitively recognize that the dishwasher is operating and that their movement has been sensed. For example, when the first sensor (251) detects a body from a distance, the lighting (42) can output light of a predetermined color as welcome lighting.

[0190] When a body is detected by the first sensor (251), and the handle (4) moves to the second position (P2), the lighting (42) can emit LED light in a predetermined pattern. For example, white light can be output as welcome lighting.

[0191] Depending on the operating status of the dishwasher, the color and length of the light emitted by the lighting (42) can vary. Accordingly, the user can intuitively know the current operating status.

[0192] When a body is detected by the second sensor (252), and the handle (4) moves to the third position (P3), the lighting (42) can output light in a predetermined pattern. The lighting (42) can output light in different patterns when the handle (4) is at the first position (P1) and when the handle (4) is at the third position (P3).

[0193] The second sensor (252) provided on the handle (4) serves as a safety sensor and confirms the user's intention to use, and the lighting (42) outputs light appropriate to the situation, thereby enhancing the user interface and user experience (UI / UX).

[0194] Meanwhile, when there is a user's washing operation command through the interface (23) or microphone (232), the door controller (24) drives the handle motor (41) to move the handle (4) backward. The handle (4) can be moved backward from the third position (P3) to the second position (P2).

[0195] Thereafter, the main controller (14) can control the dishwasher to perform the washing operation.

[0196] Meanwhile, the dishwasher may further include a door switch (254) that detects whether the door (2) is opened or closed and a handle switch (253) that detects whether the handle (4) is moved.

[0197] For example, the door switch (254) may be a switch type that is pressed when the door (2) is closed and transmits a signal to the door controller (24). The handle switch (253) may be a switch type that is pressed when the handle (4) is in the first position (P1) and transmits a signal to the door controller (24).

[0198] Alternatively, the dishwasher may further include a door position sensor for detecting the position of the door (2) and a handle position sensor for detecting the position of the handle (4).

[0199] Based on the signal of the door switch (254), when it is determined that the door (2) is opened and then closed, the main controller (14) can switch the dishwasher to the operation mode and perform the washing operation.

[0200] Alternatively, the dishwasher may further include a sensor or camera that detects the internal state of the washing room (11), and when the door (2) is closed while an object to be washed, such as dishes, is brought into the washing room (11), the main controller (14) can switch the dishwasher to the operating mode and perform the washing operation.

[0201] Meanwhile, while the handle (4) has moved to the second position (P2), the second sensor (252) detects the body for a reference time. If the body is not detected within the reference time, the handle (4) can move backward from the second position (P2) to the first position (P1).

[0202] When the handle (4) is in the first position (P1), the second sensor (252) can be turned off.

[0203] Alternatively, the second sensor (252) may remain on for a predetermined period of time from the time the handle (4) moves to the second position (P2) and then returns to the first position (P1).

[0204] Meanwhile, if the second sensor (252) detects a body during the washing operation, the main controller (14) stops the washing operation. At this time, the door controller (14) can move the handle (4) forward from the second position (P2) to the third position (P3). Accordingly, even during the washing operation, the user can conveniently and safely open the door (2) if desired.

[0205] Meanwhile, when the handle (4) is moving, if a body is detected by the first sensor (251) but no body is detected by the second sensor (252), the dishwasher can operate normally according to input through the interface (23) or microphone (242).

[0206] Otherwise, the dishwasher may perform a safety action that stops the movement of the handle (4). The safety action may include an alert action that notifies the user of an emergency situation. For example, the haptic motor (43) may vibrate the handle (4). In addition, the speaker (231) may output a voice guidance such as, "Please remove your hand. The handle will be closed." In addition, the lighting (42) may output a red light that flashes at a predetermined cycle.

[0207] Hereinafter, a dishwasher control method according to various embodiments of the present disclosure will be described with reference to the drawings.

[0208] FIG. 10 is a flowchart of a dishwasher control method according to an embodiment of the present disclosure.

[0209] Referring to FIG. 10, in the first door mode state (S1010), the dishwasher detects a body in front with the first sensor (251) (S1020).

[0210] The first door mode may be the default mode. The first door mode may be when the handle (4) is in the first position (P1), the first sensor (251) is on, and the second sensor (252) is off.

[0211] In the first door mode, the lighting (42) may also be off.

[0212] Meanwhile, some models support the automatic door opening drying function (door slightly opened) while others do not. Therefore, the state of the door (2) in the first door mode may vary depending on the model.

[0213] When a body is detected by the first sensor (251) (S1020), the dishwasher switches to the second door mode (S1030). The second door mode may be a welcoming mode.

[0214] When a body is detected by the first sensor (251) (S1020), the handle motor (41) is driven so that the handle (4) can move forward.

[0215] The second door mode may be when the handle (4) is in the second position (P2) and the second sensor (252) is also turned on, so that both the first and second sensors (251, 252) are turned on.

[0216] In the second door mode, the lighting (42) is also turned on and can output welcoming lighting of a predetermined pattern (e.g., gradation).

[0217] When a body is detected by the second sensor (252) (S1040), the dishwasher switches to the third door mode (S1050). The third door mode may be a pop-up mode.

[0218] When a body is detected by the second sensor (252) (S1040), the handle motor (41) is driven so that the handle (4) can move further forward.

[0219] In the third door mode, the handle (4) is in the third position (P3) and the lighting (42) is turned on to output light in a predetermined pattern (e.g., white dimming).

[0220] Afterwards, the dishwasher switches to an operation mode in which it operates according to commands entered by the user, such as washing operations (S1080).

[0221] The dishwasher can determine the open / close status of the door (2) and the status of the washing room (11) using a door switch (254) or other sensors (S1060).

[0222] In the third door mode, when the door (2) is opened and closed (S1060) and there is a washing operation command through the interface (23) or the like (S1070), the handle (4) moves from the third position (P3) to the second position (P2).

[0223] In the operation mode (S1080), the second sensor (252) remains on to prepare for situations such as opening during operation.

[0224] Meanwhile, when the dishwasher is in the second door mode, if a body is not detected by the second sensor (252) within a standard time (S1040), it can be switched to the first door mode (S1010).

[0225] FIG. 11 is a flowchart of a dishwasher control method according to one embodiment of the present disclosure, illustrating logic corresponding to door opening during operation.

[0226] Referring to FIG. 11, when the dishwasher is in an operation mode (S1110) during a washing operation, the second sensor (252) can detect a body (S1120).

[0227] When the second sensor (252) detects a body (S1120), the main controller (14) stops the washing operation (S1130). In addition, the dishwasher switches back to the second door mode (S1140). Accordingly, the handle (4) can be moved forward from the second position (P2) to the third position (P3) so that the user can open the door (2). The user can hold the handle (4) moved to the third position (P3) and open the door (2).

[0228] FIGS. 12 to 16 are drawings for reference in the description of a lighting operation according to an embodiment of the present disclosure.

[0229] Fig. 12 illustrates the second door mode. In the second door mode, the lighting (42) is turned on and can output a welcoming lighting of a predetermined pattern.

[0230] Figure 13 illustrates various patterns. Figure 13(a) illustrates a pattern of flashing light of a certain color. Figure 13(b) illustrates a pattern of clockwise rotation, and Figure 13(c) illustrates a pattern of counterclockwise rotation.

[0231] Figure 13 (d) illustrates a pattern of left-right gradient lighting from the inside to the outside, and Figure 13 (e) illustrates a pattern of left-right gradient lighting from the outside to the inside.

[0232] Meanwhile, when the door is opened during the operation described with reference to Fig. 11, the lighting (42) can indicate whether the door (2) can be opened by the color of the light it outputs.

[0233] For example, if the internal temperature is high and caution is required when opening the door, the lighting (42) may output red light. If the internal temperature is low, the lighting (42) may output blue light.

[0234] Figures 14 and 15 illustrate the operation of lighting (42) in the dishwasher operation mode.

[0235] Referring to Fig. 14, during a washing operation, the lighting (42) can vary the length of the output light depending on the progress of the washing operation. When the lighting (42) can emit light from the starting point (P41) to the end point (P43), the section from the starting point (P41) to the end point (P43) can be mapped to the entire washing operation time, and light can be output up to the current point (P42). Accordingly, the user can intuitively know the current stage.

[0236] Referring to Fig. 15, when the washing operation is completed, the lighting (42) can illuminate the entire section from the starting point (P41) to the ending point (P43).

[0237] In addition to the washing operation, other operations can also be guided to the current step in the same manner. Furthermore, light can be output in different colors depending on the type of operation. For example, the washing operation can be guided to the current operation and step using blue light, the drying operation using red light, the steaming operation using white light, and other operations using black light.

[0238] Fig. 16 illustrates the operation of lighting (42) in the third door mode. Even in this case, lighting (42) can output light in one or more of various patterns, as described with reference to Fig. 13.

[0239] FIG. 17 is a flowchart of a dishwasher control method according to one embodiment of the present disclosure.

[0240] Referring to Fig. 17, the dishwasher is in the first door mode state, the handle (4) is in the first position (P1), the first sensor (251) is in the on state, and the lighting (42) is in the off state (Sl710).

[0241] When a body is detected by the first sensor (251) (S1720), the on dishwasher switches to the second door mode in which the handle (4) moves forward to the second position (P2) and the second sensor (252) turns on (S1730).

[0242] Additionally, in the second door mode, the lighting (42) can also be turned on and a welcoming lighting of a predetermined pattern can be output.

[0243] Meanwhile, if a body is detected by the second sensor (252) within the standard time (S1740), the dishwasher switches to the third door mode (S1750).

[0244] If a body is not detected within a reference time by the second sensor (252) (S1750), the dishwasher may switch to the fourth door mode in which the handle (4) moves backward from the second position (P2) to the second position (P1) and the second sensor (252) remains on (S1760). In other words, the fourth door mode may be another default mode that differs from the first door mode only in the state of the second sensor (252).

[0245] Dishwashers often have induction cooktops, microwave ovens, gas ranges, and other cooking appliances on top. Therefore, by operating the second sensor (252) for a predetermined period of time to determine whether to switch to the third door mode, and then returning to the default mode, the second sensor (252) is not turned off, allowing for a quick response when a user in front of the dishwasher wants to open the door (2).

[0246] When in the 4th door mode, if the 2nd sensor (252) detects a body, it can quickly switch to the 3rd door mode without switching to the 2nd door mode.

[0247] FIG. 18 is a flowchart of a dishwasher control method according to an embodiment of the present disclosure.

[0248] Steps S1810, S1820, S1830, and S1840 of FIG. 18 may correspond to steps S1010, S1020, S1030, and S1040, respectively. Below, descriptions of the same steps are omitted or briefly described.

[0249] Meanwhile, if no body is detected by the second sensor (S1840), the dishwasher can switch to the fourth door mode described above (S1870).

[0250] If no body is detected by the second sensor (S1840), the dishwasher may switch to the third door mode (S1870). At this time, it may be determined whether the detection by the second sensor (252) occurred during the user's input (S1860).

[0251] For example, when a hand or other body part operating the interface (23) is detected by the second sensor (252) while the user is operating the interface (23), the door controller (24) can determine that the detection by the second sensor (252) corresponds to an input by the user.

[0252] In addition, when a long key, gesture input, or double-tap input can be performed through the second sensor (252), the door controller (24) can determine that the detection of the second sensor (252) corresponds to the user input by checking whether the operation corresponds to the input.

[0253] If the detection of the second sensor (252) is determined to correspond to the user input (S1860), the dishwasher can be switched to the fourth door mode (S1870).

[0254] FIG. 19 is a flowchart of a dishwasher control method according to one embodiment of the present disclosure.

[0255] Referring to Fig. 19, the dishwasher can detect a body in front through the first sensor (251) in the first door mode state. In the first door mode state, the handle (4) is in the first position (P1), and the lighting (42) is off (S1900).

[0256] If a body is detected within the detection distance (R1) of the first sensor (251) for a period longer than the first reference time (S1905), the dishwasher switches to the second door mode in which the handle (4) moves forward to the second position (P2) and the second sensor (252) turns on (S1910).

[0257] Additionally, in the second door mode, the lighting (42) can also be turned on and a welcoming lighting of a predetermined pattern can be output.

[0258] Meanwhile, if a body is detected by the second sensor (252) within the second reference time (S1915), the dishwasher switches to the third door mode (S1920).

[0259] If a body is not detected within the second reference time by the second sensor (252) (S1915), the dishwasher can be switched to the fourth door mode in which the handle (4) moves backward from the second position (P2) to the second position (P1) and the second sensor (252) remains on (S1925).

[0260] Meanwhile, when the dishwasher is in the 4th door mode (S1925), if the second sensor (252) detects a body (S1915), it can quickly switch to the 3rd door mode (S1920).

[0261] Meanwhile, if there is user input through the interface (23) (S1930) and the door is opened and closed (S1935), the dishwasher can be switched to the operating mode (S1945).

[0262] Whether the door is open or closed can be detected through a door switch (254) or other door position sensor.

[0263] Meanwhile, when switching from the third door mode (S1920) to the dishwasher operation mode (S1945), the handle (4) moves from the third position (P3) to the second position (P2) (S1940). When the handle (4) moves backward (S1940), the user's hand may become caught in the increasingly narrow space (46).

[0264] When the handle (4) is moving backward, if a body is detected by the first sensor (251) and no body is detected by the second sensor (252), the dishwasher can be switched to the operating mode (S1940) (S1945).

[0265] Otherwise (S1940), the dishwasher may perform a safety operation (S1950). The safety operation may include an operation to stop the movement of the handle (4). In addition, the safety operation may include an alert operation to notify the user of an emergency situation. For example, the haptic motor (43) may vibrate the handle (4). In addition, the speaker (231) may output voice guidance. In addition, the lighting (42) may output a red light that flashes at a predetermined cycle.

[0266] Meanwhile, when the washing machine is in the washing operation mode (S1945), the second sensor (252) can detect the body (S1955).

[0267] When the second sensor (252) detects a body (S1955), the dishwasher may switch to the fifth door mode (S1960). The fifth door mode may be another pop-up mode, where washing is stopped and the lighting (42) indicates the internal temperature in color.

[0268] Additionally, if a body is detected by the first sensor (251) and a body is detected by the second sensor (252) within a predetermined time (S1955), the dishwasher can be switched to the fifth door mode (S1960).

[0269] Meanwhile, if the second sensor (252) does not detect a body (S1955), the dishwasher completes the set operation, such as washing or drying. After the operation is completed, it may return to the first door mode according to the setting.

[0270] FIG. 20 is a flowchart of a dishwasher control method according to one embodiment of the present disclosure.

[0271] Steps S2000, S2005, S2010, S2015, and S2020 of FIG. 20 may correspond to steps S1900, S1905, S1910, S1915, and S1920, respectively. In addition, steps S2035, S2040, S2045, S2050, S2055, S2060, and S2065 of FIG. 20 may correspond to steps S1930, S1935, S1940, S1945, S1950, S1955, and S1960, respectively.

[0272] Meanwhile, in the present embodiment, a sensor is provided on the handle (4) so ​​that a predetermined input can be performed from the handle (4). For example, in the case where a long key, gesture input, or double-tap input can be performed through the second sensor (252), the door controller (24) can determine whether the operation corresponds to the input and determine that the detection of the second sensor (252) corresponds to the user input (S2030).

[0273] If the detection of the second sensor (252) is not determined to correspond to the user input (S2030), the dishwasher can be switched to the third door mode (S2020).

[0274] If the detection of the second sensor (252) is not determined to correspond to a user input (S2030), the dishwasher operation mode may be switched (S2050) depending on whether an interface input is made (S2035) or whether sensing is performed while moving (S2045).

[0275] FIG. 21 is a flowchart of a dishwasher control method according to one embodiment of the present disclosure.

[0276] Steps S2100, S2105, S2110, S2015, and S2020 of FIG. 21 may correspond to steps S1900, S1905, S1910, S1915, and S1920 of FIG. 19, respectively.

[0277] Meanwhile, if a body is not detected within the second reference time by the second sensor (252) (S2115), the dishwasher can return to the first door mode by moving the handle (4) backward from the second position (P2) to the second position (P1) (S2100).

[0278] If a body is detected by the second sensor (252) within the second reference time (S2115), the dishwasher switches to the third door mode (S2120).

[0279] Additionally, steps S2130, S2135, S2140, S2145, and S2150 of FIG. 20 may correspond to steps S1930, S1935, S1940, S1945, and S1950 of FIG. 19, respectively.

[0280] Meanwhile, when the dishwasher completes the set operation such as washing or drying (S2155), it can return to the first door mode (S2100).

[0281] FIG. 22 is a flowchart of a dishwasher control method according to one embodiment of the present disclosure.

[0282] Steps S2200, S2205, S2210, S2215, S2220, S2230, S2235, and S2240 of FIG. 22 may correspond to steps S2100, S2105, S2110, S2015, S2020, S2030, S2035, and S2040 of FIG. 21, respectively.

[0283] Meanwhile, when a safety action is performed (S2250) and a hand is detected by the second sensor (252) (S2253), the safety action state is maintained because the situation has not yet been resolved (S2250).

[0284] If the safety action is performed (S2250) and the hand is not detected by the second sensor (252) (S2253), the dishwasher can return to the third door mode (S2220).

[0285] Meanwhile, when the dishwasher completes the set operation such as washing or drying (S2255), it can return to the first door mode (S2200).

[0286] FIG. 23 is a flowchart of a dishwasher control method according to one embodiment of the present disclosure.

[0287] Steps S2300, S2305, S2310, S2315, and S2320 of FIG. 23 may correspond to steps S1900, S1905, S1910, S1915, and S1920 of FIG. 19, respectively.

[0288] Meanwhile, if a body is not detected within the second reference time by the second sensor (252) (S2315), the dishwasher can return to the first door mode by moving the handle (4) backward from the second position (P2) to the second position (P1) (S2300).

[0289] If a body is detected by the second sensor (252) within the second reference time (S2315), the dishwasher switches to the third door mode (S2320).

[0290] Additionally, steps S2330, S2335, S2340, S2345, S2350, S2355, and S2360 of FIG. 23 may correspond to steps S1930, S1935, S1940, S1945, S1950, S1955, and S1960 of FIG. 19, respectively.

[0291] FIG. 24 is a flowchart of a dishwasher control method according to one embodiment of the present disclosure.

[0292] Steps S2400, S2405, S2410, S2415, and S2420 of FIG. 24 may correspond to steps S1900, S1905, S1910, S1915, and S1920 of FIG. 19, respectively.

[0293] Additionally, steps S2430, S2435, S2440, and S2445 of FIG. 24 may correspond to steps S1930, S1935, S1940, and S1945 of FIG. 19, respectively.

[0294] Meanwhile, when the dishwasher completes the set operation such as washing or drying (S2455), it can return to the first door mode (S2400).

[0295] FIG. 25 is a flowchart of a dishwasher control method according to an embodiment of the present disclosure.

[0296] The embodiment of Fig. 25 is a case where, in the embodiment of Fig. 24, a sensor is provided on the handle (4) so ​​that a predetermined input is possible from the handle (4) side.

[0297] Accordingly, the door controller (24) adds a step (S2500) to determine that the detection of the second sensor (252) corresponds to the user input by checking whether the action corresponds to the input.

[0298] If the detection of the second sensor (252) is determined to correspond to a user input (S2500), the dishwasher can be switched to the third door mode (S2420).

[0299] If the detection of the second sensor (252) is not determined to correspond to a user input (S2500), the dishwasher operation mode may be switched (S2445) depending on whether an interface input is made (S2430) or whether sensing is performed while moving (S2440).

[0300] Although the preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above, and various modifications may be made by a person having ordinary skill in the art to which the present disclosure pertains without departing from the gist of the present disclosure as claimed in the claims.

Claims

1. A tub providing a washing room open to the front; A door for opening and closing the above washing room; A handle provided on the above door; A handle motor that drives the handle in the forward and backward directions; a first sensor; and, A second sensor having a different detection distance from the first sensor; When a body is detected by the first sensor, the handle is extended forward from the first position to the second position, A dishwasher in which, when a body is detected by the second sensor, the handle moves forward from the second position to the third position.

2. In paragraph 1, A dishwasher in which the detection distance of the first sensor is longer than the detection distance of the second sensor.

3. In paragraph 1, A dishwasher wherein the second sensor is located above the first sensor.

4. In paragraph 1, A dishwasher wherein the first sensor is provided on the door, the first sensor is located on the door, and the second sensor is located above the first sensor.

5. In paragraph 1, The above door further includes a door cover providing a front surface, The first sensor includes two sensors spaced apart from each other at a predetermined distance on the lower surface of the door cover, A dishwasher wherein the second sensor is disposed inside the handle.

6. In paragraph 1, The distance between the first position and the second position is A dishwasher having a shorter distance between the second position and the third position.

7. In paragraph 1, further comprising an interface for receiving commands; A dishwasher in which, when a washing operation command is given, the handle moves rearward from the third position to the second position.

8. In paragraph 1, A dishwasher in which, when the handle is moved to the second position and a body is not detected by the second sensor within a reference time, the handle moves backward from the second position to the first position.

9. In paragraph 1, A dishwasher in which the second sensor is turned on when a body is detected by the first sensor.

10. In paragraph 9, A dishwasher in which, when the handle is moved to the second position and a body is not detected by the second sensor within a reference time, the handle moves backward from the second position to the first position, and the second sensor remains in an on state.

11. In paragraph 1, During the washing operation, if the second sensor detects a body, A dishwasher in which the washing operation is stopped and the handle is moved forward from the second position to the third position.

12. In paragraph 1, A dishwasher further comprising lighting including a light source that emits light in a predetermined pattern when the body is detected by the first sensor and the handle is moved to the second position.

13. In paragraph 12, A dishwasher in which the color and length of light emitted by the lighting change depending on the operating status of the dishwasher.

14. In paragraph 12, A dishwasher in which the lighting outputs light in a predetermined pattern when the body is detected by the second sensor and the handle is moved to the third position.

15. In paragraph 1, When the above handle is moving, When a body is detected by the first sensor and no body is detected by the second sensor, the input is acted upon, Otherwise, the dishwasher performs a safety action that stops the movement of the handle.

16. In paragraph 15, Further comprising a haptic motor that vibrates the handle; A dishwasher wherein the above safety action includes a motion in which the haptic motor vibrates the handle.

17. In paragraph 1, A door switch that detects whether the door is open or closed; and A dishwasher further comprising a handle switch for detecting whether the handle is moved.

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