Dishwasher

Abstract

The present invention relates to a dishwasher formed such that, if the intent of a user to open a door is confirmed even when a washing course is in progress, a handle protrudes and moves forward and the washing course is stopped, and thus convenience and safety can be ensured at the same time.

Description

dishwasher

[0001] The present invention relates to a dishwasher, and more specifically, to a dishwasher configured to simultaneously ensure convenience and safety by allowing a handle to protrude forward and stop the ongoing washing cycle when a user's intention to open the door is confirmed even while a washing cycle is in progress.

[0002]

[0003] A dishwasher is a device that washes items stored inside, such as dishes and cooking utensils, by spraying a cleaning solution, such as water. The cleaning solution may contain detergent.

[0004] A dishwasher is generally configured to include a washing tank forming a washing space, a storage section for receiving objects to be washed inside the washing tank, a spray arm for spraying washing water into the storage section, and a sump for storing water and supplying washing water to the spray arm.

[0005] By using this dishwasher, the time and effort required to wash dishes and other items after a meal can be reduced, contributing to user convenience.

[0006] Typically, a dishwasher is configured to perform a washing cycle for washing an object to be washed, a rinsing cycle for rinsing the object to be washed, and a drying cycle for drying the object to be washed after washing and rinsing are completed.

[0007] Before the process, the user must open and close the door to store the dishes inside the dishwasher and to take out the washed and dried dishes after the process is completed.

[0008] As a means to facilitate the opening and closing of such doors, the doors are usually equipped with handles that the user can grasp.

[0009] In this regard, Korean Patent Publication No. 1020200082114 (Prior Document 001) discloses a dishwasher having a recessed handle provided on the door for gripping when opening and closing the door.

[0010] The handle of the dishwasher disclosed in prior art document 001 is provided in the form of a grip groove configured to be sunken to a predetermined depth from the front surface of the door toward the rear side.

[0011] Meanwhile, Korean Patent Publication No. 1020200020510 (Prior Document 002) discloses a dishwasher having a protruding handle provided on the door for gripping when opening and closing the door.

[0012] The handle of the dishwasher disclosed in prior art document 002 is provided in a T-shape, with a predetermined protruding height and always protruding forward from the front surface of the door.

[0013]

[0014] The handle disclosed in the aforementioned prior art document 001 is provided in a form in which a portion of the front surface of the door is sunken toward the inside of the door, and is not provided with a separate cover or the like, so it is always exposed to the outside.

[0015] Therefore, the handle disclosed in prior document 001 has a structure in which external foreign substances such as dust cannot help but accumulate in the sunken part for gripping, so it requires frequent cleaning, which may cause inconvenience to the user.

[0016] In addition, the handle disclosed in prior art document 001 has a problem in that it may act as an element that harms the aesthetic sense of the front appearance of the door because a part of the front of the door is concavely sunken.

[0017] In contrast, the handle disclosed in prior art document 002 has the advantage of being able to solve some of the problems of prior art document 001 because it is positioned so as to always protrude toward the front of the door.

[0018] However, the handle disclosed in prior document 002 has a problem in that it is highly likely that a user who is not aware of it may collide with the protruding part from the front surface of the door, causing injury to the user.

[0019] In addition, the handle disclosed in prior art document 002 has a problem in that it is very likely that a collision may occur between the handle and other kitchenware when taking dishes out of the dishwasher other than by the user, and as a result, the handle itself may be damaged or items such as dishes may be damaged.

[0020] The present invention has been devised to solve the problems of the prior art, and the first object of the present invention is to provide a dishwasher in which the handle is configured to protrude forward from the door only when necessary, such as when opening or closing the door, thereby preventing the accumulation of external foreign substances such as dust on the handle, thereby maintaining a clean state and significantly improving user convenience.

[0021] In addition, the present invention has a second object to provide a dishwasher in which the handle is configured to be at least partially retracted and retracted toward the inside of the door in situations where the use of the handle is unnecessary, thereby significantly reducing the possibility of injury to the user and damage to the handle that may occur due to collision with the handle.

[0022] In addition, the third object of the present invention is to provide a dishwasher that can ensure both convenience and safety by configuring the handle to protrude forward and stop the ongoing washing cycle when the user's intention to open the door is confirmed even while the washing cycle is in progress.

[0023] The objectives of the present invention are not limited to those mentioned above. Other objectives and advantages of the present invention not mentioned above can be understood through the following description and will be more clearly understood through the embodiments of the present invention. Furthermore, it will be readily apparent that the objectives and advantages of the present invention can be realized by the means and combinations thereof set forth in the claims.

[0024]

[0025] A dishwasher according to the present invention comprises: a tub that forms a washing space having an open front surface for accommodating dishes, and in which one of a plurality of washing courses formed by combining various detailed processes is performed; a door that opens and closes the open front surface of the tub; a handle that is arranged to be reciprocally movable between an unfolded position protruding forward from the door and a retracted position in which at least a portion of the handle is accommodated inside the door; a handle driving unit that is arranged inside the door and reciprocates the handle from the retracted position toward the unfolded position or from the unfolded position toward the retracted position; and a control unit that determines whether the handle driving unit is operated by controlling power supplied to the handle driving unit, wherein the control unit is characterized in that it performs a step of moving the handle forward from the retracted position toward the unfolded position based on a user's intention to open the door.

[0026] Additionally, based on the user's intention, the step of moving the handle forward may include a step of moving the handle forward before the washing course is started or after the washing course is completed.

[0027] In addition, the step of moving the handle forward before the washing course starts or after the washing course is completed may include the step of determining whether the user intends to open the door before the washing course starts or after the washing course is completed; and the step of supplying power to the handle driving unit to operate the handle driving unit so that the handle moves forward when it is determined that the user intends to open the door.

[0028] In addition, the method further includes a proximity sensor for detecting whether the user is approaching within a predetermined detection range from the door; and the step of determining whether the user has an intention to open the door includes the steps of: receiving an output signal from the proximity sensor; determining whether the user is approaching within the predetermined detection range from the output signal received from the proximity sensor; and, if it is determined that the user is approaching within the predetermined detection range, determining whether the proximity of the user continues for a predetermined set period of time; and the control unit can determine that the user has an intention to open the door if it is confirmed that the proximity of the user continues for the predetermined set period of time.

[0029] In addition, the proximity sensor includes a radar sensor that is disposed inside the door and detects the proximity of the user through a sensor hole formed through the upper surface of the door; and the sensing surface of the radar sensor can be disposed in a tilted state so as to face the upper front side of the door.

[0030] Additionally, the tilting angle of the sensing surface of the radar sensor may be 25 degrees or more and 35 degrees or less.

[0031] In addition, the control unit can determine that the user is within the predetermined detection range when it is determined that the user, whose height is greater than or equal to the minimum detection height of the proximity sensor in the vertical direction, is within a distance less than or equal to the maximum detection distance in the horizontal direction from the proximity sensor.

[0032] Additionally, the minimum detection height may be 100 cm or more and 110 cm or less.

[0033] Additionally, the maximum detection distance may be 75 cm or more and 85 cm or less.

[0034] Additionally, the above setting time may be 0.9 seconds or more and 1.1 seconds or less.

[0035] In addition, the handle further includes a light source element that is arranged inside the handle, receives power to generate visible light, and irradiates the generated visible light to the outside of the handle; and the step of moving the handle forward before the washing course is started or after the washing course is completed may further include a step of supplying power to the light source element to turn on the light source element before the operation of the handle driving unit is started or simultaneously with the operation of the handle driving unit is started when it is determined that the user has an intention to open the door.

[0036] Additionally, based on the user's intention, the step of moving the handle forward may include the step of moving the handle forward during the progress of the washing course.

[0037] In addition, the step of moving the handle forward during the progress of the washing course may include the step of determining whether the user intends to open the door during the progress of the washing course; and the step of supplying power to the handle driving unit to operate the handle driving unit so that the handle moves forward when it is determined that the user intends to open the door.

[0038] In addition, the method further includes a proximity sensor for detecting whether the user is approaching within a predetermined detection range from the door; and a first vibration sensor and a second vibration sensor, each of which is disposed at different locations inside the door and for detecting a knock-on input of the user through the door; and the step of determining whether the user has an intention to open the door comprises: receiving an output signal from the proximity sensor; determining whether the user is approaching within the predetermined detection range from the output signal received from the proximity sensor; determining whether the user is approaching within the predetermined detection range when it is determined that the user is approaching within the predetermined detection range, determining whether the user's approach continues for a set period of time; receiving a first vibration signal from the first vibration sensor and a second vibration signal from the second vibration sensor when it is confirmed that the user's approach continues for the set period of time; calculating a maximum amplitude of the first vibration signal received from the first vibration sensor and a maximum amplitude of the second vibration signal received from the second vibration sensor; And a step of comparing the maximum amplitude of the first vibration signal with the maximum amplitude of the second vibration signal; wherein, if the control unit determines that the maximum amplitude of the first vibration signal is greater than the maximum amplitude of the second vibration signal, it can determine that the user has an intention to open the door.

[0039] Additionally, the first vibration sensor may be positioned closer to the front surface of the door than the second vibration sensor.

[0040] In addition, the first vibration sensor detects vibration in the first axial direction, the second vibration sensor detects vibration in the second axial direction, and the first axial direction and the second axial direction can be directions that are orthogonal to each other.

[0041] Additionally, the first axial vibration may be a horizontal vibration, and the second axial vibration may be a vertical vibration.

[0042] In addition, the method further includes a light source element disposed inside the handle, receiving power to generate visible light, and irradiating the generated visible light to the outside of the handle; and the step of moving the handle forward during the progress of the washing course may further include a step of supplying power to the light source element to turn on the light source element before or simultaneously with the start of operation of the handle driving unit, if it is determined that the maximum amplitude of the first vibration signal is greater than the maximum amplitude of the second vibration signal.

[0043] In addition, the step of moving the handle forward during the progress of the washing course may further include a step of stopping the operation of the handle driving unit when the forward movement of the door to the unfolded position is completed after operating the handle driving unit; and a step of temporarily stopping the washing course in progress after operating the handle driving unit.

[0044] Additionally, the step of temporarily stopping the ongoing washing course may be performed before the operation of the handle driving unit is stopped or simultaneously with the operation of the handle driving unit being stopped.

[0045]

[0046] The dishwasher according to the present invention has the effect of preventing the accumulation of foreign substances such as dust on the handle, thereby maintaining a clean state and significantly improving user convenience.

[0047] In addition, the dishwasher according to the present invention has the effect of improving the aesthetics of the appearance of the dishwasher by configuring the front end surface of the handle and the front surface of the door to have a sense of unity with each other.

[0048] In addition, the dishwasher according to the present invention has the effect of significantly reducing the possibility of injury to the user and damage to the handle that may occur due to collision with the handle.

[0049] In addition, the dishwasher according to the present invention has the effect of simultaneously securing convenience and safety by configuring the handle to protrude forward when the user's intention to open the door is confirmed even while the washing cycle is in progress, thereby stopping the washing cycle in progress.

[0050] In addition to the effects described above, specific effects of the present invention are described below while explaining specific details for carrying out the invention.

[0051]

[0052] FIG. 1 is a front perspective view of a dishwasher according to an embodiment of the present invention.

[0053] Figure 2 is a schematic cross-sectional view of the dishwasher illustrated in Figure 1.

[0054] FIG. 3 is a front perspective view showing a state in which the handle of a dishwasher according to one embodiment of the present invention is moved to a retracted position.

[0055] Figure 4 is a front side view showing the handle shown in Figure 3 moved to the unfolded position.

[0056] Figure 5 is an enlarged side view of Figure 3.

[0057] Figure 6 is a rear perspective view of the door illustrated in Figure 3, showing the door with its rear panel removed.

[0058] Fig. 7 is a rear perspective view of the handle driving unit illustrated in Fig. 5.

[0059] Fig. 8 is an exploded perspective view of the handle driving unit illustrated in Fig. 7.

[0060] Fig. 9 is an exploded perspective view of the pivot link, link connector, and connecting pin among the components of the handle driving unit illustrated in Fig. 8.

[0061] Figure 10 is a side view illustrating the operation of the handle drive unit to initiate movement from the retracted position to the deployed position for the handle.

[0062] Figure 11 is a side view showing the state in which movement to the unfolded position for the handle is completed.

[0063] Figure 12 is a side view illustrating the operation of the handle drive unit to initiate movement from the unfolded position to the retracted position for the handle.

[0064] Fig. 13 is a partial enlarged view of Fig. 11, and is a drawing for explaining a structure that prevents the handle from moving backward due to an external force applied to the handle.

[0065] Figure 14 is a partially enlarged view showing the handle and handle drive unit separated from the door.

[0066] Figure 15 is a rear perspective view showing the handle and handle drive unit installed and the handle frame supporting them.

[0067] Figure 16 is an exploded perspective view to explain the detailed configuration of the handle.

[0068] Figure 17 is a side view showing a state in which light is irradiated externally from the handle during the process of the handle being moved to the unfolded position.

[0069] Figure 18 is a schematic diagram illustrating a configuration for recognizing and distinguishing between a user and a pet through a proximity sensor that is placed on the upper surface of the door and serves as a first means for determining the user's intention to open the door.

[0070] Figures 19 and 20 are vertical cross-sectional views illustrating a state in which the proximity sensor illustrated in Figure 18 is placed inside the door.

[0071] Fig. 21 is a vertical cross-sectional view illustrating the relative positions of the first vibration sensor and the second vibration sensor, which serve as a second means for determining the user's intention to open the door.

[0072] Figure 22 is a functional block diagram briefly illustrating the configuration of a control unit and functional modules provided in a dishwasher according to one embodiment of the present invention.

[0073] Figure 23 is a flowchart illustrating the administrative process sequence performed in a dishwasher according to one embodiment of the present invention.

[0074] Figures 24 to 26 are flowcharts illustrating each step of a control method for a dishwasher according to an embodiment of the present invention.

[0075]

[0076] The above-described objects, features, and advantages will be described in detail below with reference to the accompanying drawings, so that those skilled in the art can easily practice the technical idea of ​​the present invention. In describing the present invention, if it is determined that a detailed description of known technologies related to the present invention may unnecessarily obscure the gist of the present invention, a detailed description thereof will be omitted. Hereinafter, preferred embodiments of the present invention 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.

[0077] Although terms like "first" and "second" are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another, and unless otherwise specified, a "first" component may also be a "second" component.

[0078] Throughout the specification, unless otherwise specifically stated, each element may be singular or plural.

[0079] Hereinafter, the phrase "any configuration is placed on (or below)" a component or "on (or below)" a component may mean that any configuration is placed in contact with the upper surface (or lower surface) of said component, and that other configurations may be interposed between said component and any configuration placed on (or below) said component.

[0080] Additionally, when it is described that a component is "connected," "coupled," or "connected" to another component, it should be understood that the components may be directly connected or connected to one another, but that other components may also be "interposed" between the components, or that each component may be "connected," "coupled," or "connected" through another component.

[0081] As used herein, singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "consisting of" or "comprising" should not necessarily be construed to include all of the components or steps described in the specification, and should be construed to mean that some of the components or steps may not be included, or that additional components or steps may be included.

[0082] Additionally, the singular expressions used herein include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "consist of" or "comprises" should not be construed to necessarily include all of the components or steps described in the specification, and should be construed to mean that some of the components or steps may not be included, or that additional components or steps may be included.

[0083] Throughout the specification, when we refer to "A and / or B", this means A, B, or A and B, unless otherwise stated, and when we refer to "C through D", this means C or more and D or less, unless otherwise stated.

[0084] Hereinafter, the present invention will be described with reference to drawings showing a configuration according to an embodiment of the present invention.

[0085] [Overall structure of a dishwasher]

[0086] Hereinafter, the overall structure of a dishwasher (1) according to an embodiment of the present invention will be described in detail with reference to the attached drawings.

[0087] Fig. 1 is a front perspective view showing a dishwasher according to the present invention, and Fig. 2 is a simplified cross-sectional view briefly showing the internal structure of the dishwasher according to the present invention.

[0088] As illustrated in FIGS. 1 and 2, a dishwasher (1) according to the present invention may include a case (10) forming an outer shape, a tub (20) installed inside the case (10) and forming a washing space (21) in which an object to be washed is washed and having an open front surface, a door (30) for opening and closing the open front surface of the tub (20), a driving unit (40) located at the bottom of the tub (20) for supplying, collecting, circulating, and draining washing water for washing an object to be washed, a storage unit (50) detachably provided in the internal washing space (21) of the tub (20) for placing an object to be washed, and a spray unit installed adjacent to the storage unit (50) for spraying washing water for washing an object to be washed.

[0089] At this time, the objects to be washed placed in the storage unit (50) may be, for example, dishes, plates, spoons, chopsticks, and other cooking utensils. Unless otherwise stated, the objects to be washed will be referred to as dishes.

[0090] The tub (20) can be formed in a box shape with the front surface entirely open, and corresponds to a configuration known as a so-called washing tank.

[0091] A washing space (21) is formed inside the tub (20), and the open front surface can be opened and closed by a door (30).

[0092] The tub (20) can be formed by pressing a metal plate that is resistant to high temperature and moisture, for example, a plate made of stainless steel.

[0093] In addition, a number of brackets may be arranged on the inner surface of the tub (20) for the purpose of supporting and installing functional components such as the storage section (50) and the injection section described later inside the tub (20).

[0094] Meanwhile, the driving unit (40) may be configured to include a sump (41) for storing washing water, a sump cover (42) for dividing the sump (41) from the tub (20), a water supply unit (43) for supplying washing water from the outside to the sump (41), a drain unit (44) for discharging the washing water of the sump (41) to the outside, and a washing pump (45) and a supply path (46) for supplying the washing water of the sump (41) to the injection unit. The sump cover (42) is arranged on the upper side of the sump (41) and may serve to divide the tub (20) and the sump (41).

[0095] Additionally, the sump cover (42) may be provided with a plurality of recovery holes for recovering the washing water sprayed into the washing space (21) through the spray unit into the sump (41).

[0096] That is, the washing water sprayed from the spray unit toward the dishes falls to the lower part of the washing space (21) and can be returned to the sump (41) through the sump cover (42).

[0097] The washing pump (45) is provided on one side of the sump (41) and serves to pressurize washing water and supply it to the spray unit.

[0098] One end of the washing pump (45) may be connected to the sump (41) and the other end may be connected to the supply path (46). The washing pump (45) may be equipped with an impeller (451) and a motor (453). When power is supplied to the motor (453), the impeller (451) rotates, and the washing water in the sump (41) is pressurized and then supplied to the injection unit through the supply path (46).

[0099] Although not shown, the washing pump (45) may be equipped with a washing water heater to heat the washing water supplied during the washing cycle or the heated rinsing cycle.

[0100] Meanwhile, the supply path (46) can play a role in selectively supplying the washing water supplied from the washing pump (45) to the spray unit.

[0101] For example, the supply path (46) may include a first supply path (461) connected to the lower injection arm (61), a second supply path (463) connected to the upper injection arm (62) and the top nozzle (63), and the supply path (46) may be provided with a supply path switching valve (465) that selectively opens and closes the supply paths (461, 463).

[0102] At this time, the supply path switching valve (465) can be controlled so that each of the supply paths (461, 463) is opened sequentially or simultaneously.

[0103] Meanwhile, the spray unit is provided to spray washing water onto dishes, etc. stored in the storage unit (50).

[0104] More specifically, the spray unit may include a lower spray arm (61) located at the bottom of the tub (20) and spraying washing water to the lower rack (51), an upper spray arm (62) located between the lower rack (51) and the upper rack (52) and spraying washing water to the lower rack (51) and the upper rack (52), and a top nozzle (63) located at the top of the tub (20) and spraying washing water to the top rack (53) or the upper rack (52).

[0105] In particular, the lower spray arm (61) and the upper spray arm (62) are rotatably provided in the washing space (21) of the tub (20) so that they can spray washing water while rotating toward the dishes in the storage section (50).

[0106] The lower spray arm (61) can be rotatably supported on the upper side of the sump cover (42) so as to be able to spray washing water toward the lower rack (51) while rotating at the lower side of the lower rack (51).

[0107] Additionally, the upper spray arm (62) can be rotatably supported by the spray arm holder (467) so as to be able to spray the washing water while rotating between the lower rack (51) and the upper rack (52).

[0108] Meanwhile, although not shown, the lower surface (25) of the tub (20) may further be provided with a means for diverting the washing water sprayed from the lower spray arm (61) in an upward direction (U-direction) to increase the washing efficiency.

[0109] Since the detailed configuration of the injection unit is applicable to a configuration already known in the art, a description of the specific configuration of the injection unit is omitted below.

[0110] Meanwhile, a storage compartment (50) for storing dishes may be provided in the washing space (21).

[0111] The storage section (50) is provided so that it can be withdrawn from the inside of the tub (20) through the open front of the tub (20).

[0112] By way of example, FIG. 2 illustrates an embodiment in which a storage compartment is provided, including a lower rack (51) located at the bottom of a tub (20) and capable of storing relatively large dishes, an upper rack (52) located above the lower rack (51) and capable of storing medium-sized dishes, and a top rack (53) located at the top of the tub (20) and capable of storing small dishes, etc. The present invention is not limited thereto, but will be described based on an embodiment of a dishwasher (1) provided with three storage compartments (50) as illustrated.

[0113] These lower racks (51), upper racks (52) and top racks (53) can each be configured to be pulled out through the open front of the tub (20).

[0114] For this purpose, guide rails (not shown) may be provided on both sides of the wall forming the inner surface of the tub (20), and for example, the guide rails (54) may include an upper rail, a lower rail, and a top rail.

[0115] Wheels may be provided at the bottom of each of the lower racks (51), upper racks (52), and top racks (53). Users can store dishes in these lower racks (51), upper racks (52), and top racks (53) by pulling them out through the front of the tub (20), or can easily take out washed dishes from them.

[0116] The guide rail (54) may be provided as a fixed guide rail in the form of a simple rail for guiding withdrawal and insertion of the storage unit (50) or as an elastic guide rail for guiding withdrawal and insertion of the storage unit (50) and increasing the withdrawal distance according to withdrawal of the storage unit (50).

[0117] Meanwhile, the door (30) has the purpose of opening and closing the open front surface of the above-described tub (20).

[0118] A hinge part (not shown) for opening and closing the door (30) is provided at the lower part of the front surface that is normally open, and the door (30) can be opened by rotating around the hinge part as a rotation axis.

[0119] Here, the outer surface of the door (30) may be provided with a handle (31) for opening the door (30) and a control panel (32) for controlling the operation of the dishwasher (1).

[0120] As illustrated, the control panel (32) may be equipped with a display (33) that visually displays information about the current operating status of the dishwasher (1), a button section (34) including a selection button for inputting a user's course selection operation, and a power button for inputting a user's operation for turning the dishwasher on and off.

[0121] Meanwhile, the inner panel (30c) forming the inner side of the door (30) can form one side of the tub (20) when the door (30) is closed and at the same time form a seating surface on which the lower rack (51) of the storage section (50) can be supported when the door (30) is fully opened.

[0122] For this purpose, when the door (30) is fully opened, it is preferable that the inner panel (30c) of the door (30) form a horizontal plane in the same direction as the direction in which the guide rail (54) along which the lower rack (51) is guided extends.

[0123] Meanwhile, unlike the conventional dishwasher, the handle (31) of the dishwasher (1) according to the present invention can be configured to be at least partially accommodated on the inner side of the door (30) when not in use, and to automatically protrude forward from the door (30) when necessary for opening and closing the door (30).

[0124] In this way, since it is provided so as to be protrusively movable from the inside of the door (30) toward the outside, it can be referred to by various names such as a pop-up handle, a retractable handle, etc.

[0125] Hereinafter, a handle provided to be reciprocally movable on the door (30) of a dishwasher (1) according to one embodiment of the present invention will be referred to as a pop-up handle (31).

[0126] Although not shown, a detergent supply device may be further provided on the inner side of the door (30) to automatically supply detergent into the interior of the tub (20).

[0127] Additionally, a door position detection unit (36) may be provided on the outer side of the upper surface of the tub (20) to detect whether the door (30) is closed or open. For example, the door position detection unit (36) may include a door position sensor (S_d) or a latch sensor that detects the position of a door latch (not shown).

[0128] Meanwhile, a drying air supply unit (80) may be provided at the bottom of the tub (20) to generate and supply high-temperature or low-temperature drying air to the washing space inside the tub (20).

[0129] As shown, the drying air supply unit (80) may be configured to include a filter member (883) that filters outside air, a blower fan (825) that generates a drying air stream, a heater (84) that heats the drying air stream, and an air flow guide (83) that is placed inside the tub (20) and guides the drying air stream.

[0130] A drying air supply hole may be provided on the lower surface of the tub (20) so that high-temperature drying air generated from the drying air supply unit (80) can be introduced into the interior of the tub (20).

[0131] By supplying high-temperature drying air or low-temperature drying air through a drying air supply unit (80) like this into the interior of the tub (20) during the drying cycle (S5), the drying efficiency and sterilization effect on dishes can be significantly improved compared to the past.

[0132] Meanwhile, the air current supplied to the inside of the tub (20) and humidified while drying dishes can be configured to be discharged to the outside, and the discharge of the air current can be done through partial opening of the door (30) or through a separate exhaust means not shown.

[0133] [Pop-up handle appearance and operation]

[0134] Hereinafter, with reference to FIGS. 3 to 5, the appearance and operation method of a pop-up handle (31) provided on a door (30) of a dishwasher (1) according to one embodiment of the present invention will be described in detail.

[0135] As described above, the door (30) of the dishwasher (1) according to one embodiment of the present invention may be provided with a pop-up handle (31) that can move back and forth.

[0136] At this time, as described above, the door (30) can be provided to be rotatable through a hinge part (not shown) connected to the lower side.

[0137] Taking this into consideration, as shown in FIGS. 3 and 4, a pop-up handle (31) can be positioned so that it can be pulled out on the front panel (30a) forming the front surface of the door (30) at a position close to the upper surface of the door (30) where the user can easily reach the handle.

[0138] In addition, to facilitate the user's grip, the pop-up handle (31) can be arranged parallel to the upper surface of the door (30) along the left-right direction, and can be formed to have an overall T-shape.

[0139] In order to allow the pop-up handle (31) to be pulled out, an opening (30e) extending in the left-right direction and having a shape corresponding to the outer shape of the pop-up handle (31) can be formed through the front panel (30a) of the door (30) in the front-back direction (FR direction).

[0140] The pop-up handle (31) can be arranged to move back and forth through the opening (30e) of the front panel (30a) in the forward and backward direction by the operation of the handle driving unit (35) described later.

[0141] In more detail, the pop-up handle (31) can be arranged to be reciprocally moved between the most forward position and the most rearward position according to the operation of the handle driving unit (35).

[0142] For convenience, in the following, the position where the pop-up handle (31) is moved to the most forward position is defined as the deployment position (Pd), and the position where the pop-up handle (31) is moved to the most rearward position is defined as the retracted position (Pa).

[0143] Figure 3 shows a state in which the pop-up handle (31) is moved to the rearmost position (Pa) and inserted into the interior of the door (30).

[0144] As shown, when the pop-up handle (31) is moved to the retracted position (Pa), the pop-up handle (31) is at least partially retracted into the interior of the door (30).

[0145] At this time, preferably, the pop-up handle (31) can be brought into the interior of the door (30) by passing through the opening (30e) of the door (30) as a whole.

[0146] In addition, when the pop-up handle (31) is moved to the retracted position (Pa), the pop-up handle (31) can be in a state where a portion protruding from the front panel (30a) of the door (30) does not occur.

[0147] Furthermore, when the pop-up handle (31) is moved to the retracted position (Pa), the front end surface of the pop-up handle (31) can be made parallel to the front panel (30a) so as to form a continuous surface with the front panel (30a) of the door (30).

[0148] That is, a state in which no step is formed between the front panel (30a) of the door (30) and the front end surface of the pop-up handle (31) can be formed.

[0149] Through this, when the pop-up handle (31) is moved to the retracted position (Pa), the opening (30e) of the front panel (30a) is completely blocked, and since no step is formed between the front panel (30a) and the front end surface of the pop-up handle (31), the phenomenon of foreign substances such as dust accumulating in the convex part of the door (30) or accumulating on the handle itself as in the past can be fundamentally prevented.

[0150] Meanwhile, as described later, the front end surface of the pop-up handle (31) can be formed through a decorative panel (315) provided separately from the first handle body (311) that forms the overall outer shape of the pop-up handle (31).

[0151] At this time, the decorative panel (315) can be formed to have a material having the same texture as the front panel (30a) of the door (30).

[0152] Through this, a sense of unity can be formed between the decorative panel (315) and the front panel (30a) of the door (30), and the aesthetic sensibility of the exterior of the door (30) can be improved and the user's aesthetic sense can be improved.

[0153] Figures 4 and 5 illustrate a state in which the pop-up handle (31) is moved from the retracted position (Pa) to the deployed position (Pd), which is the most forward position.

[0154] As described above, the door (30) of the dishwasher (1) must be opened and closed in order to store dishes that need to be washed inside or to take out dishes that have been washed.

[0155] When the user's intention to open the door (30) is confirmed at a time when opening and closing of the door (30) is required, the pop-up door (30) can be automatically moved from the retracted position (Pa) to the deployed position (Pd) via the handle driving unit (35).

[0156] To this end, the dishwasher (1) according to one embodiment of the present invention may further be provided with a means for detecting the user's intention to open the door (30).

[0157] For example, a dishwasher (1) according to one embodiment of the present invention may include a proximity sensor (S_p) as a first means for detecting a user's intention to open the door (30).

[0158] The proximity sensor (S_p) can be a sensor that can detect whether a user is within a specific detection range from the door (30).

[0159] For example, the proximity sensor (S_p) may include any one of a radar sensor, an image sensor, or an infrared sensor (IR sensor).

[0160] However, the present invention is not limited to this, and can be applied without limitation to any means capable of detecting the proximity of a user. The following description will be based on an example in which a radar sensor is applied as the proximity sensor (S_p).

[0161] As shown in FIGS. 3 and 4, in order to easily check whether a user is approaching the front area of ​​the door (30), and to facilitate modularization with an existing display (33), etc., a radar sensor as a proximity sensor (S_p) can be placed on the control panel (32) in a position close to the display (33).

[0162] In addition, a radar sensor functioning as a proximity sensor (S_p) can be configured to be placed on the control panel (32) at a position as close as possible to the center of the upper surface of the door (30) so as to be able to distinguish between users and non-user pets.

[0163] However, the dishwasher (1) according to the present invention is not configured so that the pop-up handle (31) moves immediately even if a user is recognized within a predetermined detection range from the door (30) through a radar sensor.

[0164] This is because there may be cases where a user simply passes by the dishwasher (1) without the intention of opening the door (30).

[0165] Therefore, the present invention can further add a time condition to confirm the intention to open the door (30) through a proximity sensor (S_p) such as a radar sensor.

[0166] That is, the dishwasher (1) according to one embodiment of the present invention can determine that the user has an intention to open the door (30) when it is confirmed through the radar sensor that the user is within a specific detection range from the door (30) and continues to stay within the specific detection range or within the detection range for a specific time condition.

[0167] Here, the specific detection range and specific time conditions can be set differently depending on the environment in which the dishwasher (1) is placed and the physical condition of the user.

[0168] In this way, when specific detection range conditions and specific time conditions are satisfied, as described later, the control unit (100) initiates the operation of the handle driving unit (35) to move the pop-up handle (31) forward from the retracted position (Pa) to the deployed position (Pd).

[0169] Details regarding the configuration for confirming the user's intention to open the door (30) through a proximity sensor (S_p), etc., will be described later with reference to FIG. 18 and below.

[0170] Figures 4 and 5 illustrate a state in which the pop-up handle (31) has been fully deployed to the deployment position (Pd).

[0171] In this way, when the pop-up handle (31) is completely moved to the deployment position (Pd), the first handle body (311) of the pop-up handle (31) can be exposed to the outside of the door (30) and can be gripped by the user.

[0172] At this time, the stroke (Ls) by which the pop-up handle (31) moves from the retracted position (Pa) to the deployed position (Pd) may be 40 mm or more and 50 mm or less, preferably 45 mm.

[0173] The stroke (Ls) of the pop-up handle (31) is determined by considering that if the stroke (Ls) is too small, such as less than 40 mm, it is not easy for the user to grip, and if the stroke (Ls) is too large, such as more than 50 mm, the size of the pop-up handle (31) in the front-back direction becomes large, which may cause a problem in that the pop-up handle (31) is not fully inserted into the interior of the door (30).

[0174] However, the movement stroke (Ls) of the pop-up handle (31) is merely exemplary and may be set differently depending on the overall size of the dishwasher (1) and the front-back size of the door (30).

[0175] Meanwhile, as the pop-up handle (31) moves to the unfolding position (Pd), the first handle body (311) of the pop-up handle (31) comes out of the opening (30e) of the front panel (30a) of the door (30) and is exposed to the outside of the door (30), and accordingly, the opening (30e) is released from the closed state by the first handle body (311).

[0176] However, as described later, when the pop-up handle (31) is moved to the unfolded position (Pd), the second handle body (312) connected to the first handle body (311) moves forward together, so that the opening (30e) of the front panel (30a) is blocked by the second handle body (312).

[0177] Accordingly, even if the pop-up handle (31) is moved to the unfolded position (Pd), the opening (30e) of the front panel (30a) can remain blocked, so that foreign substances such as dust can be effectively prevented from entering the interior of the door (30).

[0178] In addition, since the inside of the door (30) cannot be observed through the opening (30e) of the front panel (30a) by the second handle body (312), the user's sense of aesthetics can be effectively prevented from being reduced.

[0179] [Detailed configuration of the handle drive unit]

[0180] Hereinafter, with reference to FIGS. 6 to 13, the detailed configuration of the handle driving unit (35) that operates the pop-up handle (31) so that the pop-up handle (31) moves back and forth between the deployed position (Pd) and the retracted position (Pa) will be described.

[0181] First, referring to FIG. 6, considering the shape of the first handle body (311) and the second handle body (312) of the pop-up handle (31) that extend long in the left-right direction, a pair of handle driving parts (35) can be arranged in a separated state on the left end side and the right end side of the pop-up handle (31).

[0182] That is, a pair of handle driving parts (35) can be arranged in a spaced and separated state in the left-right direction so that the driving force for moving the pop-up handle (31) can be transmitted to the left and right ends of the pop-up handle (31) respectively, which are arranged in a state of being accommodated inside the handle housing (30d4).

[0183] In this way, as a pair of handle driving units (35) are arranged in a separated state along the left and right directions, the driving force generated from each handle driving unit (35) can be transmitted to each pop-up handle (31).

[0184] Accordingly, since the driving load applied to the individual handle driving unit (35) is distributed, the individual handle driving unit (35) can be miniaturized, which can have the effect of reducing manufacturing costs.

[0185] However, this is merely an example, and it is also possible to configure the pop-up handle (31) to be driven by only a single handle driving unit. The present invention is not limited thereto, but will be described based on an embodiment in which a pair of handle driving units (35) are provided.

[0186] As shown, the left handle driving part (35) and the right handle driving part (35) have symmetrical shapes and can be installed and fixed to the handle frame (30d) in a state where they are arranged symmetrically with respect to the pop-up handle (31).

[0187] Therefore, each handle driving unit (35) can be configured identically to each other except that they have a symmetrical shape and are arranged symmetrically.

[0188] Therefore, the following description will be based on the handle driving unit (35) placed on the left, and unless otherwise stated, the following contents can be equally applied to the handle driving unit (35) placed on the right.

[0189] As illustrated in FIGS. 7 and 8, a handle driving unit (35) that generates a driving force for reciprocating movement of a pop-up handle (31) may be configured to include a driving motor (351) that receives power and generates a rotational driving force, a driving cam (352) that rotates by the rotational driving force of the driving motor (351), a pivot link (353) that rotates about one end in conjunction with the rotation of the driving cam (352) and serves to push or pull the pop-up handle (31), a link connector (354) that connects the pivot link (353) and the pop-up handle (31), and a housing (355) that accommodates the driving motor (351), the driving cam (352), and the pivot link (353).

[0190] The drive motor (351) receives power and generates rotational driving force.

[0191] As described above, the pop-up handle (31) according to one embodiment of the present invention can be configured to reciprocate between the deployed position (Pd) and the retracted position (Pa) while repeatedly moving forward from the retracted position (Pa) toward the deployed position (Pd) and moving backward from the deployed position (Pd) toward the retracted position (Pa).

[0192] In order to easily implement such reciprocating movement, the driving motor (351) constituting the handle driving unit (35) can be configured to generate a bidirectional rotational driving force.

[0193] Accordingly, the driving motor (351) applied to the handle driving unit (35) according to one embodiment of the present invention can be applied without limitation in its type as long as it is a motor capable of generating a bidirectional rotational driving force.

[0194] Hereinafter, among the bidirectional rotational driving forces, the driving in the direction in which the output shaft (3512) of the driving motor (351) rotates to move the pop-up handle (31) forward toward the unfolded position (Pd) is referred to as forward rotational driving or forward rotational driving force, and the driving in the direction in which the output shaft (3512) of the driving motor (351) rotates to move the pop-up handle (31) backward toward the retracted position (Pa) is referred to as reverse rotational driving or reverse rotational driving force.

[0195] Meanwhile, as illustrated in FIG. 8, the motor body (3511) of the driving motor (351) can be accommodated in a receiving space formed between the second housing (3552) and the third housing (3553), and the output shaft (3512) of the driving motor (351) can be connected to the driving cam (352) by passing through the second housing (3552).

[0196] As described below, the output shaft (3512) of the drive motor (351) is inserted into the shaft hole (3522) of the drive cam (352) and can be forcibly coupled to the shaft hole (3522).

[0197] Through this, the output shaft (3512) of the drive motor (351) can be rotated integrally with the drive cam (352).

[0198] Meanwhile, the drive cam (352) receives rotational driving force from the output shaft (3512) of the drive motor (351) and transmits it to the pivot link (353).

[0199] In more detail, the drive cam (352) pressurizes the pivot link (353) so that the pivot link (353) pivots forward when the drive motor (351) rotates in the forward direction by the output shaft (3512) and pressurizes the pivot link (353) so that the pivot link (353) pivots backward when the drive motor (351) rotates in the reverse direction by the output shaft (3512).

[0200] To this end, the driving cam (352) may be configured to include a cam body (3521) that rotates by a rotational driving force transmitted from an output shaft (3512) of a driving motor (351), and a driving pin (3523) that is provided on one side of the cam body (3521) and protrudes toward a pivot link (353).

[0201] The cam body (3521) may be provided in the form of a disc having an approximately constant thickness, for example.

[0202] An axial hole (3522) is formed through the center of the cam body (3521) to which the output shaft (3512) of the drive motor (351) is forcibly connected.

[0203] In order to easily implement integral rotation through forced coupling to the output shaft (3512), the output shaft (3512) and the shaft hole (3522) can be connected through spline coupling or the like.

[0204] Meanwhile, the drive pin (3523) serves to transmit the rotational driving force of the cam body (3521) to the pivot link (353).

[0205] As shown, the drive pin (3523) may be formed to protrude from one side of the cam body (3521) toward the pivot link (353) and may be provided at a position spaced apart from the shaft hole (3522) by a predetermined distance in the radial direction.

[0206] Therefore, when the cam body (3521) rotates around the shaft hole (3522), the drive pin (3523) revolves around the shaft hole (3522).

[0207] The drive pin (3523) is connected to the pivot link (353) by being inserted into the guide groove (3533) of the pivot link (353) described later.

[0208] Accordingly, the drive pin (3523) revolves around the shaft hole of the cam body (3521) and pressurizes the pivot link (353) so that the pivot link (353) pivots forward or backward.

[0209] Meanwhile, the rotation range of the drive pin (3523) or the rotation range of the cam body (3521) needs to be formed smaller than the extension length of the guide groove (3533) provided in the pivot link (353). This is because if the rotation range is larger than the extension length of the guide groove (3533), there is a possibility that the drive pin (3523) or the guide groove (3533) may be damaged.

[0210] As a means for limiting the rotation range of the drive pin (3523) or the rotation range of the cam body (3521), a stopper projection (3524) protruding along the radial direction may be provided on the edge of the cam body (3521).

[0211] As illustrated, the stopper projection (3524) may be a predetermined step formed on the edge of the cam body (3521).

[0212] The stopper projection (3524) implemented as a step portion may be provided as a pair spaced apart along the circumferential direction to limit the rotation range of the driving pin (3523) or the rotation range of the cam body (3521) in both directions.

[0213] In this way, the stopper projections (3524) can limit the rotational range of the driving pin (3523) or the rotational range of the cam body (3521) within the circumferential range formed between a pair of stopper projections (3524).

[0214] As illustrated in FIG. 8, a cam stopper (3552b) corresponding to a pair of stopper projections (3524) may be provided inside the second housing (3552) that accommodates the driving cam (352).

[0215] Meanwhile, the pivot link (353) receives driving force from the driving pin (3523) of the driving cam (352) and pushes the pop-up handle (31) so that the pop-up handle (31) moves forward, or pulls the pop-up handle (31) so that the pop-up handle (31) moves backward.

[0216] As illustrated in FIG. 9, the pivot link (353) may be, for example, a bar-type link extending in a bar shape from the first end (3531) toward the second end (3532).

[0217] At this time, the first end (3531) of the pivot link (353), which becomes a bar-shaped link, can be supported by the first housing (3551) and the second housing (3552) in a state in which only relative rotation is possible with respect to the first housing (3551) and the second housing (3552), that is, in a state in which only pivoting is possible.

[0218] Accordingly, the pivot link (353) can pivot around the first end (3531) when the pressure of the driving pin (3523) of the driving cam (352) is applied.

[0219] For this purpose, a pair of shaft bosses (3531a) that serve as the entire rotation center or pivot center of the pivot link (353) may be provided at the first end (3531) of the pivot link (353).

[0220] A pair of shaft bosses (3531a) may be formed to protrude toward the first housing (3551) and the second housing (3552) on one side and the other side of the pivot link (353) so as to have a predetermined protruding height from these one side and the other side, respectively.

[0221] A bushing (356) or bearing can be fitted into these pair of shaft bosses (3531a) to reduce friction, and each of the pair of shaft bosses (3531a) can be connected to the first housing (3551) and the second housing (3552) with the bushing (356) fitted thereto.

[0222] The first housing (3551) and the second housing (3552) may each be provided with a cylindrical bushing joint (3551a, 3552a) into which a bushing (356) can be inserted.

[0223] The pivot link (353) may be provided with a guide groove (3533) into which the drive pin (3523) of the aforementioned drive cam (352) is inserted.

[0224] As shown, the guide home (3533) is formed between the first end (3531) and the second end (3532), and can be provided in the first extension (353a) of the pivot link (353) described later.

[0225] The guide groove (3533) can be linearly extended along the length direction of the first extension portion (353a), and the movement path of the drive pin (3523) can be guided so that the drive pin (3523) moves along the extension direction of the guide groove (3533) while being inserted into the guide groove (3533).

[0226] Meanwhile, the second end (3532) of the pivot link (353) is connected to the second handle body (312) of the pop-up handle (31) so as to be able to rotate relative to it, and is configured to move the pop-up handle (31) forward or backward by pushing or pulling the second handle body (312) when the pivot link (353) pivots.

[0227] The second end (3532) of the pivot link (353) can be connected to the second handle body (312) via a connecting pin (3534) so ​​that the second end (3532) of the pivot link (353) can rotate relative to the second handle body (312).

[0228] At this time, a link connector (354) may be further provided as a configuration for connecting the second end (3532) of the pivot link (353) and the second handle body (312) to each other.

[0229] As illustrated, the link connector (354) may be configured to include a handle connection portion (3541) that is connected to the second handle body (312) and a link connection portion (3542) that is indirectly connected through a connection pin (3534).

[0230] The handle connection part (3541) may be provided in a flat shape so as to be in surface contact with the second handle body (312) in order to secure the maximum contact area with the second handle body (312).

[0231] The handle connection part (3541) may be provided with a plurality of screw holes (3541h) through which a fastening means such as a screw bolt can pass.

[0232] The link connection portion (3542) can be indirectly connected to the second end (3532) of the pivot link (353) via the aforementioned connection pin (3534).

[0233] For this purpose, a pin guide hole (3543) formed through the left and right directions may be formed in the link connection portion (3542).

[0234] As shown, the pin guide hole (3543) can be linearly extended in the up-down direction, and the connecting pin (3534) can be guided along a movement path so as to move in the up-down direction while being inserted into the pin guide hole (3543).

[0235] Accordingly, when the pivot link (353) rotates, the connecting pin (3534) coupled to the second end (3532) of the pivot link (353) moves along the pin guide hole (3543) to push the link connector (354) forward or pull it backward, thereby causing the pop-up handle (31) to move forward or backward.

[0236] In order to enable the connecting pin (3534) to be coupled in this way, a pinhole (3532h) through which the connecting pin (3534) passes may be formed penetrating along the left and right directions in the second end (3532) of the pivot link (353).

[0237] Additionally, the second end (3532) of the pivot link (353) may be provided in a branched form as shown in order to prevent interference with the relative moving link connection part (3542).

[0238] Meanwhile, as described above, the pivot link (353) pivots around the first end (3531) and pushes or pulls the link connector (354) and the second handle body (312) to generate a forward / backward movement stroke (Ls) of the pop-up handle (31).

[0239] In order to keep the rotational amount of the pivot link (353) to a minimum while maximizing the forward and backward movement stroke (Ls) of the pop-up handle (31), the second end (3532) of the pivot link (353) may be arranged in a form inclined toward the second handle body (312) of the pop-up handle (31).

[0240] That is, as illustrated in FIG. 9, the pivot link (353) may include a first extension (353a) extending radially from a first end (3531), and a second extension (353b) extending in a bent manner toward the pop-up handle (31) between the first extension (353a) and the second end (3532).

[0241] In this way, by forming the second extension (353b) to be bent or curved toward the pop-up handle (31), the forward and backward stroke (Ls) for pushing or pulling the second handle body (312) of the pop-up handle (31) can be greatly increased.

[0242] [Movement of the pop-up handle according to the operation of the handle drive unit]

[0243] Referring to FIGS. 10 to 13 below, the process of moving the pop-up handle (31) forward to the deployed position (Pd) or backward to the retracted position (Pa) according to the operation of the handle driving unit (35) will be described.

[0244] First, Fig. 10 illustrates a situation in which the pop-up handle (31) automatically moves forward along the forward direction (Dfw) from the retracted position (Pa) to the deployed position (Pd).

[0245] Referring to Fig. 10, when power is supplied to the drive motor (351) while the pop-up handle (31) is moved to the retracted position (Pa), the operation of the drive motor (351) begins, and the drive motor (351) generates a forward rotational driving force.

[0246] Accordingly, the output shaft (3512) of the drive motor (351) starts to rotate in the forward direction, and the drive cam (352) forcibly connected to the output shaft (3512) can start to rotate in the forward direction.

[0247] At this time, when forward rotation is initiated, the output shaft (3512) and the driving cam (352) can begin to rotate counterclockwise based on the illustrated state.

[0248] Meanwhile, as the forward rotation of the drive cam (352) is initiated, the forward revolution of the drive pin (3523) can be initiated.

[0249] As shown in Fig. 10, the driving pin (3523) positioned at the bottom of the guide groove (3533) of the pivot link (353) can begin to move relative to the top of the guide groove (3533).

[0250] As the drive pin (3523) rotates in the forward direction and moves relative to the guide groove (3533) from the bottom to the top, the drive pin (3523) forces the pivot link (353) to pivot forward about the first end (3531). That is, based on the illustrated state, the pivot link (353) pivots counterclockwise about the first end (3531).

[0251] At this time, as the pivot link (353) pivots around the first end (3531), the second end (3532) of the pivot link (353) also rotates forward, and the connecting pin (3534) connected to the second end (3532) also rotates forward.

[0252] Accordingly, the driving pin (3523) positioned at the bottom of the guide hole (3543) of the link connector (354) moves relative to the top of the guide hole (3543).

[0253] As the connecting pin (3534) moves relative to the guide hole (3543) from the bottom to the top, the connecting pin (3534) applies pressure to the link connector (354) and the second handle body (312) to push them forward. That is, the connecting pin (3534) applies a pressure to the link connector (354) to push the link connector (354) forward while moving relative to the guide hole (3543).

[0254] In this way, after the operation of the handle driving unit (35) is initiated and the driving cam (352) completes rotation to a preset rotation range, the power supply to the driving motor (351) is stopped and the forward movement of the pop-up handle (31) to the deployed position (Pd) can be completed.

[0255] Figure 11 shows a state in which the pop-up handle (31) has completed forward movement to the deployment position (Pd).

[0256] When the forward movement of the pop-up handle (31) to the deployment position (Pd) is completed in this way, the first handle body (311) can be exposed entirely to the outside of the door (30), and the user can easily perform an action of opening or closing the door (30) while holding the first handle body (311).

[0257] At this time, when the pop-up handle (31) is moved to the deployment position (Pd) as shown in Fig. 13, the first extension (353a) of the pivot link (353) is raised to a state close to vertical, and the driving pin (3523) of the driving cam (352) can be moved back to the bottom of the guide groove (3533).

[0258] Accordingly, as shown, a virtual first extension line (Lc1) connecting the center (Cr) of the drive pin (3523) and the rotation center (Cc) of the shaft hole (3522), which is the rotation center of the cam body (3521), forms a predetermined intersection angle (a) with a virtual second extension line (Lc2) that is parallel to the movement direction (Drw / Dfw) of the pop-up handle (31) and passes through the rotation center (Cc) of the shaft hole (3522) of the cam body (3521), but the intersection angle (a) can be formed to be a very small angle.

[0259] For example, the intersection angle (a) can be 0 degrees or more and 5 degrees or less.

[0260] In this way, as a very small intersection angle (a) of less than 5 degrees is formed, a structure can be achieved in which the first handle body (311) can be fixed without being dislodged from the deployed position (Pd) even when a user's pressure is applied to open or close the door (30) through the first handle body (311) of the pop-up handle (31).

[0261] That is, a structure can be achieved in which the pop-up handle (31) can be effectively fixed in the deployed position (Pd) through the positional arrangement of the pivot link (353) and the driving cam (352) without the need for a separate detachment prevention or fixing means to be provided in the pop-up handle (31) and the handle frame (30d) described later.

[0262] Through this, the dishwasher (1) according to one embodiment of the present invention can have the effect of simplifying the structure of the pop-up handle (31), the handle driving part (35), and the handle frame (30d), and significantly reducing the manufacturing cost.

[0263] Figure 11 illustrates a situation in which the pop-up handle (31) automatically moves backward along the backward direction (Drw) from the deployed position (Pd) toward the retracted position (Pa).

[0264] Referring to Fig. 11, when a predetermined waiting time has elapsed after the pop-up handle (31) has moved to the deployment position (Pd), power is supplied to the drive motor (351), operation of the drive motor (351) begins, and the drive motor (351) generates a reverse rotational driving force. For example, the predetermined waiting time may be 2.5 seconds or more and 3.5 seconds or more.

[0265] Accordingly, the output shaft (3512) of the drive motor (351) starts to rotate in the reverse direction, and the drive cam (352) forcibly connected to the output shaft (3512) can start to rotate in the reverse direction.

[0266] At this time, when reverse rotation is initiated, the output shaft (3512) and the driving cam (352) can begin to rotate clockwise based on the illustrated state.

[0267] Meanwhile, as the reverse rotation of the drive cam (352) is initiated, the reverse revolution of the drive pin (3523) can be initiated.

[0268] As shown in Fig. 11, the driving pin (3523) positioned at the bottom of the guide groove (3533) of the pivot link (353) can begin to move relative to the top of the guide groove (3533).

[0269] As the drive pin (3523) rotates in the reverse direction and moves relative to the guide groove (3533) from the bottom to the top, the drive pin (3523) forces the pivot link (353) to pivot rearward about the first end (3531). That is, based on the illustrated state, the pivot link (353) pivots clockwise about the first end (3531).

[0270] At this time, as the pivot link (353) pivots around the first end (3531), the second end (3532) of the pivot link (353) also rotates toward the rear, and the connecting pin (3534) connected to the second end (3532) also rotates toward the rear.

[0271] Accordingly, the driving pin (3523) positioned at the upper end of the guide hole (3543) of the link connector (354) moves relative to the lower end of the guide hole (3543).

[0272] As the connecting pin (3534) moves relative to the top of the guide hole (3543) toward the bottom, the connecting pin (3534) applies pressure to the link connector (354) to pull it rearward. That is, the connecting pin (3534) applies a pressure to the link connector (354) to pull it rearward while moving relative to the guide hole (3543).

[0273] In this way, after the operation of the handle driving unit (35) is initiated and the driving cam (352) completes the reverse rotation to the preset rotation range, the power supply to the driving motor (351) is cut off and the backward movement of the pop-up handle (31) to the retracted position (Pa) can be completed.

[0274] [Linear movement guide for pop-up handles]

[0275] As described above, the pop-up handle (31) is configured to move forward or backward by the forward driving force or reverse driving force of the handle driving unit (35).

[0276] However, as described above, the pop-up handle (31) can be configured to move horizontally or linearly along the forward direction (Dfw) or the backward direction (Drw).

[0277] Means for implementing such horizontal or linear movement may be provided in a pop-up handle (31) and a handle frame (30d) in which the pop-up handle (31) is accommodated.

[0278] As described above, the pop-up handle (31) may be configured to include a first handle body (311) that is exposed to the outside of the door (30) when moved to the deployment position (Pd) so that the user can grip it, and a second handle body (312) that is connected to the rear end of the first handle body (311) and is placed inside the door (30) when moved to the deployment position (Pd).

[0279] As illustrated in FIG. 14, the second handle body (312) may include a plate-shaped panel portion (3121) that serves to cover an opening (30e) formed in the front panel (30a) of the door (30) when the pop-up handle (31) moves to the unfolded position (Pd), and an edge rib (3122) that extends along the edge of the panel portion (3121) and extends rearward away from the first handle body (311).

[0280] As described above, a link connector (354) of a handle driving unit (35) can be attached to the rear of the panel portion (3121) constituting the second handle body (312).

[0281] That is, the driving force of the handle driving unit (35) can be transmitted to the panel portion (3121) of the second handle body (312) through the link connector (354), and can be transmitted to the first handle body (311) through the panel portion (3121).

[0282] The edge rib (3122) extends along the edge of the panel portion (3121) and serves to reinforce the rigidity of the panel portion (3121) and prevent the pop-up handle (31) from being detached from the door (30) when pulled by the user.

[0283] In order to perform this anti-separation function, the edge rib (3122) may be formed to have a width in the vertical direction and a width in the left and right direction greater than the opening (30e) of the front panel (30a) of the door (30) and the opening (30d2) of the handle frame (30d) described later.

[0284] Due to the size of the edge rib (3122) as described above, when the first handle body (311) is pulled, the front surface of the edge rib (3122) collides with the inner surface of the handle frame (30d), thereby preventing the first handle body (311) and the second handle body (312) from being separated.

[0285] Meanwhile, the vertical extension (3122b) of the edge rib (3122) may be provided with a guide protrusion (3123) that protrudes in a direction away from the edge rib (3122).

[0286] As illustrated in Fig. 14, the guide protrusion (3123) may have a shape that maintains a constant vertical thickness and extends long along a direction parallel to the forward direction (Dfw) or backward direction (Drw) of the pop-up handle (31).

[0287] The guide protrusion (3123) can be inserted into the rail groove (30d45) of the handle housing (30d4) described later, and as the guide protrusion (3123) moves along the rail groove (30d45), the first handle body (311) and the second handle body (312) move horizontally or linearly.

[0288] Accordingly, the guide protrusion (3123) of the second handle body (312) and the rail groove (30d45) of the handle housing (30d4) can be the first means for implementing horizontal or linear movement of the pop-up handle (31).

[0289] In Fig. 14, a configuration is illustrated in which a guide protrusion (3123) is provided only on the left side of the edge rib (3122), but the guide protrusion (3123) may also be provided on the right side of the edge rib (3122) on the opposite side.

[0290] Additionally, as illustrated in FIG. 14, the horizontal extension portion (3122a) of the second handle body (312) may be provided with a notch portion (3122c) whose left-right width is maintained constant.

[0291] A protruding surface portion (30d46) of the handle housing (30d4) described later can be inserted into the notch portion (3122c).

[0292] The width in the left and right directions of the protruding surface portion (30d46) can be maintained constant in accordance with the shape of the notch portion (3122c).

[0293] When the first handle body (311) and the second handle body (312) are accommodated in the handle housing (30d4), the protruding surface portion (30d46) can be inserted into the notch portion (3122c). Accordingly, when the pop-up handle (31) moves, the notch portion (3122c) moves along the protruding surface portion (30d46), causing the first handle body (311) and the second handle body (312) to move horizontally or linearly.

[0294] Accordingly, the notch portion (3122c) of the second handle body (312) and the protruding surface portion (30d46) of the handle housing (30d4) can serve as a second means for implementing horizontal or linear movement of the pop-up handle (31).

[0295] FIG. 15 illustrates a handle frame (30d) including a handle housing (30d4) that accommodates a first handle body (311) and a second handle body (312).

[0296] The handle frame (30d) has the handle driving part (35) attached thereto and supports the handle driving part (35) and movably accommodates and supports the pop-up handle (31).

[0297] The handle frame (30d) may include a panel portion (30d1) and an outer wall portion (30d3) that serve as a support surface or attachment surface to support the handle driving portion (35).

[0298] The panel portion (30d1) and the outer wall portion (30d3) of the handle frame (30d) can be attached to the inner surface of the front panel (30a) of the door (30).

[0299] Meanwhile, the handle frame (30d) may further include a handle housing (30d4) to movably accommodate and support the pop-up handle (31).

[0300] As shown, the handle housing (30d4) may be provided in a box shape with the front and rear sides open so that the first handle body (311) and the second handle body (312) can be accommodated as a whole when the pop-up handle (31) is moved to the retracted position (Pa).

[0301] The open front surface of the handle housing (30d4) can be an opening (30d2) through which the first handle housing (30d4) enters and exits.

[0302] The opening (30d2) of the first handle housing (30d4) can be formed at a position corresponding to the opening (30e) of the front panel (30a) of the door (30) and can be formed through the opening to have a corresponding size.

[0303] As described above, the handle housing (30d4) may be provided with a rail groove portion (30d45) and a protruding surface portion (30d46) that serve as means for implementing horizontal or linear movement of the pop-up handle (31).

[0304] The rail home portion (30d45) can be formed on the left and right sides of the handle housing (30d4), and can be formed by partially protruding the left and right sides toward the outer wall portion (30d3).

[0305] The protruding surface (30d46) can be formed on the upper surface of the handle housing (30d4), and can be formed by protruding a portion of the upper surface in a downward direction.

[0306] Meanwhile, as illustrated, a cutting portion (30d44) may be formed on the lower surface of the handle housing (30d4) to provide a movement path for the pivot link (353) of the handle driving portion (35).

[0307] [Detailed structure of the pop-up handle]

[0308] Figure 16 illustrates the detailed structure of the pop-up handle (31) placed on the front side of the first handle body (311) described above.

[0309] Referring to FIG. 16, a pop-up handle (31) provided in a dishwasher (1) according to one embodiment of the present invention may further include a handle board (313) that is disposed on the front of a first handle body (311) and on which at least one light source element (3131) is mounted, a light guide plate (314) that is disposed in front of the handle board (313) and diffuses visible light generated from the light source element (3131), and a decorative panel (315) that is disposed in front of the light guide plate (314).

[0310] The light source element (3131) generates visible light or light when the pop-up handle (31) moves, thereby visually informing the user that the pop-up handle (31) is operating normally.

[0311] The light source element (3131) can be applied without limitation as long as it is a means that can receive power and generate a predetermined amount of visible light, and can be an LED element as an example.

[0312] The present invention is not limited thereto, but will be described below based on an embodiment in which an LED element is applied as a light source element (3131).

[0313] Although FIG. 16 illustrates a configuration in which a total of seven LED elements are mounted on the handle substrate (313), the present invention is not limited thereto, and the number of LED elements may be added or reduced depending on the size and shape of the first handle body (311).

[0314] Meanwhile, the light guide plate (314) serves to diffuse visible light generated from the light source element (3131).

[0315] More specifically, visible light generated from the light source element (3131) can be introduced through the rear surface of the light guide plate (314) and then dispersed within the light guide plate (314) to spread toward the edge of the light guide plate (314).

[0316] At this time, the decorative panel (315) placed in front of the light guide plate (314) is surface-treated to have the same texture as the front panel (30a) of the door (30) as described above.

[0317] Therefore, visible light introduced into the light guide plate (314) cannot pass through the decorative panel (315) and may be projected to the outside through the edge of the light guide plate (314).

[0318] In order to project such visible light, the edge of the light guide plate (314) may be exposed to the outside as shown in Fig. 17.

[0319] That is, the light guide plate (314) is placed between the decorative panel (315) and the front surface of the first handle body (311), but the edge of the light guide plate (314) can be placed without being covered by them.

[0320] Accordingly, as illustrated, the light generated from the light source element (3131) can be effectively projected to the outside through the edge of the light guide plate (314) through the inside of the light guide plate (314), and the user can effectively check the operating status of the pop-up handle (31) through the light beam projected through the edge of the light guide plate (314) in this way. In this way, in order to effectively convey to the user the information that the pop-up handle (31) is operating normally or that the operation will soon commence, as described below, power may be supplied to the light source element (3131) before the operation of the handle driving unit (35) commences or at the same time as the operation of the handle driving unit (35) commences, so that visible light may be irradiated to the outside of the pop-up handle (31).

[0321] In addition, since visible light is projected only through the edge of the light guide plate (314), a lighting effect similar to indirect lighting can be achieved, thereby improving the aesthetic sensibility of the user.

[0322] Meanwhile, the pop-up handle (31) of the present invention is configured to automatically move forward and automatically move backward according to the operation of the handle driving unit (35).

[0323] Therefore, there is a possibility that the user's hand or an object may become caught between the first handle body (311) and the door (30) during the automatic backward movement of the pop-up handle (31), and a means for warning the user of and preventing such a catch phenomenon may be provided.

[0324] As one means for warning of such a jamming phenomenon, a vibration element (3132) may be provided in the pop-up handle (31).

[0325] For example, a vibration element (3132) is mounted on a handle substrate (313) and serves to generate haptic vibration in the pop-up handle (31) when a jamming phenomenon is detected.

[0326] As shown in Fig. 16, the vibration element (3132) can be mounted on the handle substrate (313).

[0327] As a vibration element (3132) capable of generating haptic vibration in this way and being effectively mounted on the handle substrate (313), either a piezo element or a haptic motor can be selected.

[0328] Meanwhile, the pop-up handle (31) may further be provided with a means for detecting a jamming phenomenon.

[0329] The means for detecting the entrapment phenomenon may be referred to as a first safety sensor (S_sf1) and a second safety sensor (S_sf2).

[0330] The first safety sensor (S_sf1) detects whether the user's hand is caught.

[0331] For example, the first safety sensor (S_sf1) may include either a touch sensor (S_t) or an infrared sensor (S_if).

[0332] The touch sensor (S_t) may be an electrostatic touch sensor, and a conductive sheet (316) constituting the static touch sensor may be placed on the rear side of the first handle body (311) facing the door (30) so as to effectively detect whether or not a user's finger is in contact.

[0333] The infrared sensor (S_if) may be positioned to project infrared rays from the transmitter (S_if1) toward the receiver (S_if2) to determine whether a user's finger is present between the transmitter (S_if1) and the receiver (S_if2). To this end, as illustrated in Fig. 16, the transmitter (S_if1) and the receiver (S_if2) may be positioned separately on opposite ends of the first handle body (311).

[0334] However, the locations of the transmitter (S_if1) and receiver (S_if2) are merely exemplary, and they can be installed in locations other than the first handle body (311).

[0335] The second safety sensor (S_sf2) detects whether an object other than the user's hand is located between the pop-up handle (31) and the door (30).

[0336] For example, the second safety sensor (S_sf2) may include either a strain sensor that detects deformation of the pop-up handle (31) or the handle driving unit (35) when the pop-up handle (31) moves backward, or a current sensor that detects overload of the driving motor (351) when the pop-up handle (31) moves backward.

[0337] Although not shown, the strain sensor may be attached to the first handle body (311) or the second handle body (312) constituting the pop-up handle (31), or to the pivot link (353) of the handle driving unit (35).

[0338] In addition, although not shown, a current sensor may be provided in the power supply unit (48) described later and configured to detect the current value supplied to the driving motor (351) through the power supply unit (48).

[0339] [Means for detecting the intention to open the door]

[0340] As described above, the dishwasher (1) according to one embodiment of the present invention may further include a means for detecting a user's intention to open the door (30).

[0341] For example, the means for detecting the user's intention to open the door (30) may be a proximity sensor (S_p) and a knock-on sensor (S_n).

[0342] First, Fig. 18 discloses a configuration that detects a user's intention to open a door (30) using a single radar sensor as a proximity sensor (S_p).

[0343] As is known in the art, a radar sensor can perform the function of detecting the presence of a user or an object within a detection area (as), the distance to the user or object, and the moving speed of the user or object by transmitting electromagnetic waves through a sensing surface (S_p1) and analyzing the electromagnetic waves reflected when they collide with a user or an object.

[0344] As illustrated, the detection area (as) of the radar sensor applied to the present invention may have an angular range of about 100 degrees in the forward / backward direction and about 100 degrees in the left / right direction based on the sensing surface (S_p1).

[0345] At this time, as described above, in order to easily check whether a user is approaching the front area of ​​the door (30) and to distinguish between the user and a pet other than the user, the radar sensor functioning as a proximity sensor (S_p) may be configured to be placed as close as possible to the center of the upper surface of the front panel (30a) of the door (30) as possible inside the door (30).

[0346] A sensor hole (30a1) through which electromagnetic waves of the radar sensor can enter and exit can be formed through the upper surface of the front panel (30a) at a position corresponding to the position where the radar sensor is placed, and the sensor hole (30a1) can be closed by a glass panel (30a2).

[0347] At this time, in order to minimize interference with the detection area (as) of the radar sensor, as illustrated in Fig. 20, a predetermined left-right clearance (D2) must be secured between the radar sensor and the sensor hole (30a1), and a predetermined up-down clearance (D1) must be secured between the sensor substrate (120) on which the radar sensor is mounted and the front panel (30a).

[0348] For example, the vertical clearance (D1) and the left-right clearance (D2) can each be set to be 5 mm or more.

[0349] Meanwhile, as illustrated in FIG. 19, since the radar sensor is placed inside the door (30) close to the upper surface of the front panel (30a) of the door (30), the sensing surface (S_p1) of the radar sensor can be arranged to generally face the upper side of the door (30).

[0350] Furthermore, the sensing surface (S_p1) of the radar sensor can be arranged in a tilted state at a predetermined angle toward the front of the door (30).

[0351] Therefore, the sensing surface (S_p1) of the radar sensor can be arranged to face the upper front side of the door (30).

[0352] In this way, by tilting the sensing surface (S_p1) of the radar sensor so that it faces the upper front side of the door (30) rather than the lower front side of the door (30), the detection area (as) of the radar sensor can be formed in a state of being tilted toward the upper front side of the door (30).

[0353] Referring to FIG. 19 in more detail, a substrate frame (30f) for supporting the control panel (32) and the main substrate (110) constituting the control panel (32) may be placed between the front panel (30a) and the rear panel (30b) on the upper side of the interior space of the door (30).

[0354] As shown, the substrate frame (30f) can be placed on the upper side of the handle frame (30d) and can be placed in a state where it is supported by the handle frame (30d).

[0355] At this time, as illustrated, the substrate frame (30f) may be provided as a divided body divided along the vertical direction, and may be composed of a first frame (30f1) constituting the upper divided body, and a second frame (30f2) constituting the lower divided body.

[0356] As shown, a tilting holder (30f3) for supporting a radar sensor in a tilted state may be provided integrally or separately on the inner bottom surface of the first frame (30f1) constituting the upper partition.

[0357] The radar sensor may be mounted on the main board (110) or, as shown, may be mounted on a sensor board (120) provided separately from the main board (110) adjacent to the main board (110) and supported on a tilting holder (30f3).

[0358] In this way, since the sensing surface (S_p1) of the radar sensor is tilted and positioned in the tilting holder (30f3) so as to face the upper front side of the door (30), even if an object that cannot be expected to use the dishwasher (1), such as a pet or an infant with a height smaller than that of the dishwasher (1), approaches the front of the door (30), the radar sensor can be configured not to detect it. Therefore, the pop-up handle (31) is prevented from being operated meaninglessly by detecting a pet or an infant, and thus power loss can be minimized.

[0359] Here, the tilting angle (at) of the sensing surface (S_p1) of the radar sensor with respect to the vertical direction may be, for example, 25 degrees or more and 35 degrees or less, and preferably 30 degrees.

[0360] However, the tilting angle (at) of the sensing surface (S_p1) of the radar sensor provided in the present invention with respect to the vertical direction can be adjusted according to the physical condition of the user who is expected to use the dishwasher (1).

[0361] For example, when the tilting angle (at) of the sensing surface (S_p1) of the radar sensor with respect to the vertical direction is set to 30 degrees, the minimum vertical detection height (H_min) of the radar sensor can be 100 cm or more and 110 cm or less, preferably 105 cm, and the maximum detection distance (L_max) based on the horizontal direction can be 75 cm or more and 85 cm or less, preferably 80 cm.

[0362] That is, when the tilting angle (at) is set to 30 degrees, a user with a height of 105 cm or more can be recognized as being close if he or she enters the detection range within 80 cm from the radar sensor in the horizontal direction.

[0363] In contrast, for example, if the tilt angle (at) is set to 15 degrees, a user with a height of 127 cm or more may be recognized as being close if he or she comes within 50 cm of the radar sensor in the horizontal direction.

[0364] Here, the tilting angle (at) can be configured to be changed by adjusting the inclination angle of the tilting holder (30f3) described above.

[0365] In this way, the dishwasher (1) according to one embodiment of the present invention is configured so that the tilting angle (at) of the sensing surface (S_p1) of the radar sensor is adjustable, thereby having the effect that the minimum vertical detection height (H_min) of the detection range that can be detected by a single radar sensor and the maximum horizontal detection distance (L_max) of the detection range can be easily changed and set.

[0366] However, the dishwasher (1) according to one embodiment of the present invention is not configured so that the pop-up handle (31) moves immediately even if a user is recognized within a predetermined detection range from the door (30) through a radar sensor.

[0367] This is because situations such as a user simply passing by the dishwasher (1) without the intention of opening the door (30) and being detected by the proximity sensor (S_p) may occur.

[0368] Accordingly, the present invention can further add a time condition to confirm the user's intention to open the door (30) through a proximity sensor (S_p) such as a radar sensor.

[0369] That is, the dishwasher (1) according to one embodiment of the present invention can determine that the user has an intention to open the door (30) when it is detected that the user is within a detection range set from the door (30) through a radar sensor, which is a proximity sensor (S_p), and it is confirmed that the user continues to stay within the detection range for a set time condition.

[0370] Here, the setting time condition can be 0.9 seconds or more and 1.1 seconds or less, and preferably 1 second.

[0371] When the detection range conditions and time conditions set in this manner are satisfied, as described later, the control unit (100) can initiate operation of the handle driving unit (35) before the washing course is started or after the washing course is completed to move the pop-up handle (31) forward from the retracted position (Pa) to the deployed position (Pd).

[0372] However, if the door (30) is opened while the dishwasher (1) is performing a washing cycle, there is a very high possibility that washing water may leak from the tub (20) or the user may be burned by high-temperature washing water or high-temperature air current.

[0373] That is, if the door (30) is opened momentarily while the washing cycle (S2) is in progress using high-temperature washing water inside the tub (20), the heating rinsing cycle (S4) is in progress, or the drying cycle (S5) for dishes is in progress using high-temperature airflow inside the tub (20), there is a very high possibility that the user will be burned by the high-temperature washing water or high-temperature airflow.

[0374] However, in some cases, even when the washing cycle is in progress, a situation may arise where the washing cycle in progress must be paused and dishes must be added to the inside of the tub (20) or some dishes must be taken out from the inside of the tub (20).

[0375] In this way, a knock-on sensor (S_n) may be provided as an additional means to detect the user's intention to open the door (30) during the progress of the washing course.

[0376] The knock-on sensor (S_n) detects when a user knocks on the door (30) to indicate his or her intention to open the door (30) and transmits a corresponding output signal to the control unit (100) described below.

[0377] As described below, the control unit (100) determines the user's intention to open the door through a vibration signal received as an output signal from the knock-on sensor (S_n).

[0378] The knock-on sensor (S_n) can be a vibration sensor that can effectively detect the user's knock-on input, and can be configured to include a first vibration sensor (S_n1) and a second vibration sensor (S_n2) that are positioned at different locations.

[0379] For example, the first vibration sensor (S_n1) and the second vibration sensor (S_n2) are single-axis vibration detection sensors that can detect a single-axis vibration component among three-axis vibration components, and can be configured to have the same external shape and size. By configuring the knock-on sensor (S_n) using two vibration sensors having the same external shape and size, the manufacturing cost and assembly cost can be reduced.

[0380] However, the positions and directions in which the first vibration sensor (S_n1) and the second vibration sensor (S_n2) are respectively arranged may be configured differently.

[0381] More specifically, as illustrated in FIG. 21, the first vibration sensor (S_n1) can be attached to the rear surface of the front surface (30f21) of the second frame (30f2) of the substrate frame (30f) having a cross-section in the shape of the letter ㄷ.

[0382] As shown, the front surface (30f21) of the second frame (30f2) can be placed in direct contact with the front panel (30a) forming the front surface of the door (30).

[0383] Accordingly, the first vibration sensor (S_n1) can be arranged to directly receive the user's knock-on input input from the front panel (30a).

[0384] The rear surface (30f22) of the second frame (30f2) can be placed in direct contact with the rear panel (30b) of the door (30).

[0385] Meanwhile, the second vibration sensor (S_n2) can be mounted on the main board (110) that is arranged in a space formed between the upper surface (30f13) of the first frame (30f1) and the upper surface (30f23) of the second frame (30f2).

[0386] As shown, the main board (110) can be supported by the first frame (30f1) and the second frame (30f2) in a state where the contact area between the first frame (30f1) and the second frame (30f2) is minimized to prevent short circuits.

[0387] Therefore, the vibration generated by the user's knock-on input can be indirectly attenuated through the first frame (30f1), the second frame (30f2) and the main board (110) and transmitted to the second vibration sensor (S_n2).

[0388] As with the second frame (30f2), the front surface (30f11) of the first frame (30f1) may be arranged to be in direct contact with the front panel (30a) of the door (30), and the rear surface (30f22) of the second frame (30f2) may be arranged to be in direct contact with the rear panel (30b) of the door (30).

[0389] Meanwhile, as described above, the first vibration sensor (S_n1) and the second vibration sensor (S_n2) are each a single-axis vibration detection sensor, but the directions in which they are arranged can be different.

[0390] For example, as illustrated in FIG. 21, the first vibration sensor (S_n1) may be arranged on the second frame (30f2) to detect horizontal vibration (V1), and the second vibration sensor (S_n2) may be arranged on the main board (110) to detect vertical vibration (V2). That is, the first vibration sensor (S_n1) and the second vibration sensor (S_n2) may be configured to detect vibrations in directions orthogonal to each other.

[0391] In this way, the first vibration sensor (S_n1) and the second vibration sensor (S_n2) are arranged so that the positions where they are placed and the directions of vibrations that can be detected are different from each other, so that the vibrations generated during the operation of the dishwasher (1) and the vibrations caused by the user's knock-on input can be easily identified.

[0392] That is, the user's knock-on input is generally made through the front panel (30a) that constitutes the front surface of the door (30).

[0393] In addition, the front panel (30a) has a size in which the vertical height and the left-right width are much larger than the thickness.

[0394] Therefore, the vibration generated in the front panel (30a) of the door (30) by the knock-on input can be formed with a horizontal amplitude that is much larger than the left-right amplitude and the up-down amplitude.

[0395] Accordingly, when a user's knock is input, the amplitude of vibration detected by the first vibration sensor (S_n1) may be formed to be much larger than the amplitude detected by the second vibration sensor (S_n2), but when vibration is simply generated during the washing cycle of the dishwasher (1), there is no significant difference between the amplitude detected by the first vibration sensor (S_n1) and the amplitude detected by the second vibration sensor (S_n2).

[0396] As described below, if there is a large difference between the amplitude of the first vibration signal output from the first vibration sensor (S_n1) and the amplitude of the second vibration signal output from the second vibration sensor (S_n2), the control unit (100) can determine that a user's knock is input, and if there is almost no difference in amplitude, it can easily determine that the vibration is not caused by a knock.

[0397] [Control unit configuration and control method]

[0398] Hereinafter, the configuration of a control unit (100) provided in a dishwasher (1) according to one embodiment of the present invention will be described with reference to FIG. 22.

[0399] As illustrated in FIG. 22, a dishwasher (1) according to one embodiment of the present invention may include a control unit (100) for controlling each functional module.

[0400] The control unit (100) may be provided in various forms, such as a microcontroller, microcomputer, or microprocessor, which can be mounted on the aforementioned main board (110), as is known in the art.

[0401] First, the control unit (100) can be electrically connected to the drive motor (351) of the handle driving unit (35). The control unit (100) can control the power supplied to the drive motor (351) from the power supply unit (48) described later to start or stop the operation of the drive motor (351). The control unit (100) can supply power to the drive motor (351) to drive it forward to move the pop-up handle (31) forward, or supply power to the drive motor (351) to drive it in the reverse direction to move the pop-up handle (31) backward.

[0402] When the control unit (100) confirms the user's intention to open the door (30) through the proximity sensor (S_p) and the knock-on sensor (S_n), it supplies power to the drive motor (351) of the handle drive unit (35) through the power supply unit (48) to drive the drive motor (351) in the forward direction to move the pop-up handle (31) forward to the unfolded position (Pd).

[0403] In addition, when a predetermined waiting time has elapsed after the pop-up handle (31) has moved to the deployment position (Pd), the control unit (100) supplies power to the drive motor (351) to drive the drive motor (351) in the reverse direction to move the pop-up handle (31) backward to the retracted position.

[0404] In addition, the control unit (100) can be electrically connected to the button unit (34) into which the user's operation command is input. When the user's power on / off operation input, washing course selection operation, or option selection operation is input through the button unit (34), the button unit (34) can transmit a corresponding electrical signal to the control unit (100).

[0405] The control unit (100) can control the dishwasher (1) to turn the power of the dishwasher (1) on and off when an electrical signal is received from the button unit (34) or to perform individual cycles of the dishwasher (1) according to the selected washing course and selected operation mode.

[0406] Although not shown, the user's operation command may be configured to be input through another input means, such as the user's wireless terminal, in addition to the button section (34).

[0407] In addition, the control unit (100) can be electrically connected to the door position sensor (S_d). The control unit (100) can determine whether the door (30) is currently closed or open through a signal received from the door position sensor (S_d), and when the door (30) is closed, the control unit (100) can confirm the user's intention to open the door (30) and, if the door (30) needs to be opened, operate the handle driving unit (35) to move the pop-up handle (31) forward to the unfolding position (Pd).

[0408] Additionally, the control unit (100) may be electrically connected to a proximity sensor (S_p). The control unit (100) may determine whether a user is within a specific detection range of the door (30) through a signal received from the proximity sensor (S_p).

[0409] As described above, the proximity sensor (S_p) may include any one of a radar sensor, an image sensor, or an infrared sensor.

[0410] In addition, the control unit (100) may be electrically connected to the first vibration sensor (S_n1) and the second vibration sensor (S_n2) constituting the knock-on sensor (S_n). As described above, the first vibration sensor (S_n1) and the second vibration sensor (S_n2) detect vibrations generated in the dishwasher (1). The control unit (100) may determine whether a user's intention to open the door (30) is input during the progress of the washing cycle by comparing the amplitude of the first vibration signal and the amplitude of the second vibration signal received from the first vibration sensor (S_n1) and the second vibration sensor (S_n2). Although not illustrated, the control unit (100) may further include means for amplifying the amplitude of the first vibration signal and the amplitude of the second vibration signal, respectively, in order to clearly detect the user's knock-on input.

[0411] Additionally, the control unit (100) can be electrically connected to the light source element (3131) and the vibration element (3132) mounted on the handle board (313).

[0412] The control unit (100) can visually inform the user that the pop-up handle (31) is being operated normally and that the pop-up handle (31) will be moved forward toward the deployment position (Pd) by supplying power to the light source element (3131) to generate visible light or light at the same time as the forward movement of the pop-up handle (31) is initiated or before the forward movement of the pop-up handle (31) is initiated.

[0413] As described above, the light source element (3131) may be an LED element that can receive power and generate a predetermined amount of visible light.

[0414] Additionally, the control unit (100) can be electrically connected to an audio output unit that generates voice output or sound output.

[0415] When the control unit (100) confirms the user's intention to open the door (30) through the proximity sensor (S_p) and the knock-on sensor (S_n), it can generate a voice alarm or an audio alarm through the audio output unit to notify in advance that the pop-up handle (31) will move forward.

[0416] For example, a voice alarm may include guidance information such as “Open the handle.”

[0417] Meanwhile, the control unit (100) may be electrically connected to a memory and a timer. The control unit (100) may call up operation conditions and time conditions for each cycle, which are pre-stored in the memory for each washing course, and use these to generate a control signal for controlling the progress and end of the cycle according to the washing course.

[0418] Furthermore, as described later, information regarding the actual time, which serves as a time standard for determining the user's intention to open the door (30), may be further stored in the memory.

[0419] In addition, the control unit (100) can measure the elapsed time for each administration using a timer and compare it with the pre-stored time conditions for each administration to determine whether each administration is completed.

[0420] Here, each cycle may include a pre-wash cycle (S1), a washing cycle (S2), a rinsing cycle (S3), a heating rinsing cycle (S4), and a drying cycle (S5), as illustrated in Fig. 23. The control unit (100) may be configured to control the dishwasher (1) so that a plurality of washing courses may be performed by combining any one of these cycles according to a user's selection.

[0421] Hereinafter, a control method of a dishwasher (1) according to the present invention will be described with reference to FIGS. 23 to 26.

[0422] As illustrated in Fig. 23, the control unit (100) controls the overall progress of the washing course of the dishwasher (1), which includes at least one of, for example, a pre-washing course (S1), a washing course (S2), a rinsing course (S3), a heating rinsing course (S4), and a drying course (S5).

[0423] The pre-washing cycle (S1) is a cycle in which the washing pump (45) is driven to circulate the washing water without injecting detergent through the detergent supply device and the amount of contamination is measured through a turbidity sensor (not shown) provided in the sump (41), and the washing cycle (S2) is a cycle in which the washing water is circulated while injecting detergent through the detergent supply device to wash the dishes.

[0424] In the rinsing cycle (S3) and the heating rinsing cycle (S4), rinse aid is injected from the detergent supply device and the washing water is circulated to remove any detergent remaining on the dishes.

[0425] During the rinsing cycle (S3) and the heating rinsing cycle (S4), heated wash water is supplied to heat the dishes to a predetermined temperature. This improves the drying efficiency of the dishes and shortens the drying time in the drying cycle (S5) that follows the completion of the rinsing cycle (S3) and the heating rinsing cycle (S4).

[0426] Each of these detailed procedures can be combined and adjusted to be omitted or performed repeatedly depending on the selected washing course settings and options.

[0427] At this time, between each administration, a draining administration for the washing water used in each administration and a water supply administration for supplying new washing water may be included.

[0428] A water supply cycle may be included before the pre-wash cycle (S1).

[0429] A drainage cycle and a water supply cycle can be performed between the pre-wash cycle (S1) and the washing cycle (S2), between the washing cycle (S2) and the rinsing cycle (S3), and between the heating rinsing cycle (S4) and the rinsing cycle (S3), and a drainage process can be performed between the heating rinsing cycle (S4) and the drying cycle (S5).

[0430] The water supply operation can be carried out by controlling the aqua stop (not shown) provided in the water supply unit (43) to supply washing water to the sump (41) through the water supply path, and the drainage operation can be carried out by controlling the drain unit (44) connected to the sump (41) to drain washing water to the outside of the dishwasher (1) through the drain path.

[0431] At this time, if the user's intention to open the door (30) is confirmed through the proximity sensor (S_p) before the washing course that is performed in this order is started and after the washing course is completed, the control unit (100) can drive the handle driving unit (35) in the forward direction to automatically move the pop-up handle (31) forward from the retracted position (Pa) toward the deployed position (Pd).

[0432] In addition, the control unit (100) can drive the handle driving unit (35) in the reverse direction after a predetermined waiting time has elapsed after the pop-up handle (31) has moved to the deployment position (Pd), thereby automatically driving the pop-up handle (31) to move backward from the deployment position (Pd) toward the retracted position (Pa).

[0433] In addition, if the control unit (100) additionally confirms the user's intention to open the door (30) through the aforementioned knock-on sensor (S_n), it can control the pop-up handle (31) to move forward from the retracted position (Pa) even while the washing course is in progress.

[0434] This is to prepare for cases where the door (30) is opened during the washing cycle, such as when adding dishes to be washed.

[0435] In this way, when the forward movement of the pop-up handle (31) is initiated during the progress of the washing course, the control unit (100) can temporarily stop the progress of the washing course in consideration of water leakage prevention and user safety.

[0436] FIG. 24 illustrates an embodiment of a control method of a dishwasher (1) according to the present invention, in which a step (S10, S20) is shown for determining whether the dishwasher (1) is performing a washing course, determining whether the user intends to open the door (30), and moving the pop-up handle (31) forward and backward from the retracted position to the deployed position.

[0437] First, Figure 25 illustrates the detailed steps of step S10.

[0438] Referring to Fig. 25, the control unit (100) receives an output signal from the proximity sensor (S_p) before the start of the selected washing course and after the completion of the selected washing course. (S101)

[0439] When an output signal is received from the proximity sensor (S_p) at step S101, the control unit (100) checks whether the user's approach is detected within the detection range of the proximity sensor (S_p). (S102)

[0440] Here, as described above, the vertical minimum detection height (H_min) of the proximity sensor (S_p) may be 100 cm or more and 110 cm or less, and preferably 105 cm.

[0441] Additionally, the maximum horizontal detection distance (L_max) of the proximity sensor (S_p) may be 75 cm or more and 85 cm or less, and preferably 80 cm.

[0442] If it is determined that the proximity of the user is detected within the detection range of the proximity sensor (S_p) at step S102, the control unit (100) determines whether the proximity of the user is maintained for a predetermined set period of time after the proximity of the user is detected. (S103)

[0443] Here, the setting time can be 0.9 seconds or more and 1.1 seconds or less, and preferably 1 second.

[0444] If it is confirmed in step S103 that the user's proximity continues for a set period of time, the control unit (100) can determine that the user has the intention to open the door (30).

[0445] In this way, if the user's intention to open the door (30) is confirmed before the start of the washing course or after the completion of the washing course, the control unit (100) supplies power to the handle driving unit (35) to operate the handle driving unit (35) in the forward direction, thereby automatically moving the pop-up handle (31) forward from the retracted position (Pa) to the deployed position (Pd). (S105)

[0446] Meanwhile, when the user's intention to open the door (30) is confirmed in this way, the control unit (100) can supply power to the light source element (3131) placed inside the pop-up handle (31) to turn on the light source element (3131), (S104)

[0447] At this time, the control unit (100) can turn on the light source element (3131) before the operation of the handle driving unit (35) is initiated or simultaneously with the operation of the handle driving unit (35). Through this, the user can intuitively and visually recognize in advance or simultaneously that the pop-up handle (31) will begin moving forward.

[0448] Although not shown, the control unit (100) may be configured to control the sound output unit to generate a voice alarm or an acoustic alarm containing information that forward movement of the pop-up handle (31) will be initiated before or simultaneously with the initiation of operation of the handle driving unit (35).

[0449] Meanwhile, after the operation of the handle driving unit (35) is initiated at step S105 and the pop-up handle (31) has completed moving to the deployed position (Pd), the control unit (100) cuts off the power supply to the handle driving unit (35) to stop the pop-up handle (31) at the deployed position (Pd). (S106)

[0450] In addition, although not shown, when the forward movement of the pop-up handle (31) is completed, the control unit (100) may turn off the light source element (3131) by cutting off the power supply to the light source element (3131) or may maintain the turn-on state by continuing to supply power.

[0451] In this way, when the pop-up handle (31) is completely moved to the deployment position (Pd), the user can easily open the door (30) by holding the pop-up handle (31).

[0452] Next, Figure 26 illustrates the detailed steps of step S20.

[0453] Referring to Fig. 26, the control unit (100) receives an output signal from the proximity sensor (S_p) during the progress of the selected washing course. (S201)

[0454] When an output signal is received from the proximity sensor (S_p) at step S201, the control unit (100) checks whether the user's approach is detected within the detection range of the proximity sensor (S_p). (S202)

[0455] Here, as described above, the vertical minimum detection height (H_min) of the proximity sensor (S_p) may be 100 cm or more and 110 cm or less, and preferably 105 cm.

[0456] Additionally, the maximum horizontal detection distance (L_max) of the proximity sensor (S_p) may be 75 cm or more and 85 cm or less, and preferably 80 cm.

[0457] If it is determined that the proximity of the user is detected within the detection range of the proximity sensor (S_p) at step S202, the control unit (100) determines whether the proximity of the user is maintained for a predetermined set period of time after the proximity of the user is detected. (S203)

[0458] Here, the setting time can be 0.9 seconds or more and 1.1 seconds or less, and preferably 1 second.

[0459] If it is confirmed in step S203 that the user's proximity continues for a set period of time, the control unit (100) receives an output signal from the first vibration sensor (S_n1) and the second vibration sensor (S_n2) constituting the knock-on sensor (S_n). (S204)

[0460] Here, the output signal of the first vibration sensor (S_n1) can be the first vibration signal, and the output signal of the second vibration sensor (S_n2) can be the second vibration signal.

[0461] When a first vibration signal is received from a first vibration sensor (S_n1) and a second vibration signal is received from a second vibration sensor (S_n2) at step S204, the control unit (100) calculates the maximum amplitude of the first vibration signal and the maximum amplitude of the second vibration signal. (S205)

[0462] Here, in order to facilitate calculation and comparison of the maximum amplitude, the first vibration signal and the second vibration signal may be amplified at a predetermined ratio after being received by the control unit (100).

[0463] When the maximum amplitude of the first vibration signal and the maximum amplitude of the second vibration signal are calculated at step S205, the control unit (100) compares the maximum amplitude of the first vibration signal with the maximum amplitude of the second vibration signal. (S206)

[0464] As a result of the comparison at step S206, if the control unit (100) determines that the maximum amplitude of the first vibration signal is greater than the maximum amplitude of the second vibration signal, it can consider that the user's knock-on input has been input from the door (30) and determine that the user has an intention to open the door (30).

[0465] Conversely, if the control unit (100) determines that the maximum amplitude of the first vibration signal is less than or equal to the maximum amplitude of the second vibration signal as a result of the comparison at step S206, it determines that the received first vibration signal and second vibration signal are not generated by the user's knock-on input, and returns to step S201 described above and repeats the following steps.

[0466] Meanwhile, if it is determined that the user intends to open the door (30) during the washing process, the control unit (100) supplies power to the handle driving unit (35) to operate the handle driving unit (35) in the forward direction, thereby automatically moving the pop-up handle (31) forward from the retracted position (Pa) to the deployed position (Pd). (S208)

[0467] Meanwhile, when the user's intention to open the door (30) is confirmed in this way, the control unit (100) can supply power to the light source element (3131) placed inside the pop-up handle (31) to turn on the light source element (3131), (S207)

[0468] At this time, the control unit (100) can turn on the light source element (3131) before the operation of the handle driving unit (35) is initiated or simultaneously with the operation of the handle driving unit (35). Through this, the user can intuitively and visually recognize in advance or simultaneously that the pop-up handle (31) will begin moving forward.

[0469] Although not shown, the control unit (100) may be configured to control the sound output unit to generate a voice alarm or an acoustic alarm containing information that forward movement of the pop-up handle (31) will be initiated before or simultaneously with the initiation of operation of the handle driving unit (35).

[0470] Meanwhile, after the operation of the handle driving unit (35) is initiated at step S206 and the pop-up handle (31) has completed moving to the deployed position (Pd), the control unit (100) cuts off the power supply to the handle driving unit (35) to stop the pop-up handle (31) at the deployed position (Pd). (S209)

[0471] In addition, although not shown, when the forward movement of the pop-up handle (31) is completed, the control unit (100) may turn off the light source element (3131) by cutting off the power supply to the light source element (3131) or may maintain the turn-on state by continuing to supply power.

[0472] In this way, when the pop-up handle (31) is completely moved to the unfolded position (Pd), the user can open the door (30) by holding the pop-up handle (31). However, since the dishwasher (1) is currently in the process of a washing cycle, it is necessary to stop the washing cycle for safety reasons as described above.

[0473] Therefore, the control unit (100) can control the dishwasher (1) so that the washing course currently in progress in the dishwasher (1) is temporarily stopped after the forward movement of the pop-up handle (31) is initiated by operating the handle driving unit (35) at step S208. (S210)

[0474] Here, the control unit (100) can control the washing course to be temporarily stopped before the operation of the handle driving unit (35) is stopped at least in step S209 or at the same time as the operation of the handle driving unit (35) is stopped.

[0475] Through this, the phenomenon of the user being burned by high temperature washing water or high temperature airflow flowing out of the tub (20) when the door (30) is opened while the washing course is in progress can be effectively prevented.

[0476] Although the present invention has been described with reference to the drawings exemplified above, it is to be understood that the present invention is not limited to the embodiments and drawings disclosed herein, and that various modifications may be made by those skilled in the art within the scope of the technical idea of ​​the present invention. Furthermore, even if the operational effects according to the configuration of the present invention have not been explicitly described while describing the embodiments of the present invention, it is natural that the effects predictable by the corresponding configuration should also be acknowledged.

Claims

1. A tub that forms a washing space with an open front surface that accommodates dishes, and in which one of a plurality of washing courses formed by combining various detailed processes is selected and performed; A door for opening and closing the open front surface of the above tub; A handle arranged to be reciprocally movable between a deployed position protruding forward from the door and a retracted position in which at least a portion of the handle is accommodated within the door; A handle driving unit disposed inside the door and reciprocating the handle from the retracted position toward the deployed position or from the deployed position toward the retracted position; and A control unit that controls the power supplied to the handle driving unit to determine whether the handle driving unit is operating; Including, The above control unit, A dishwasher that performs a step of moving the handle forward from the retracted position toward the deployed position based on the user's intention to open the door.

2. In paragraph 1, Based on the user's intention, the step of moving the handle forward is: A step of moving the handle forward before the washing course starts or after the washing course is completed; Dishwasher including.

3. In paragraph 2, The step of moving the handle forward before the above washing course starts or after the above washing course is completed is, A step of determining whether the user intends to open the door before the washing course starts or after the washing course is completed; and When it is determined that the user intends to open the door, a step of supplying power to the handle driving unit to operate the handle driving unit so that the handle moves forward; Dishwasher including.

4. In paragraph 3, A proximity sensor for detecting whether the user is within a predetermined detection range from the door; Including more, The step of determining whether the user intends to open the door is as follows: A step of receiving an output signal from the proximity sensor; A step of determining whether the user is approaching within the predetermined detection range from the output signal received from the proximity sensor; and A step of determining whether the user's proximity continues for a predetermined set period of time when it is determined that the user is approaching within the predetermined detection range; Including, A dishwasher in which the control unit determines that the user has an intention to open the door when it is confirmed that the user's proximity continues for the set time.

5. In paragraph 4, The above proximity sensor, A radar sensor that is placed inside the door and detects the proximity of the user through a sensor hole formed through the upper surface of the door; Including, A dishwasher in which the sensing surface of the above radar sensor is tilted so as to face the upper front side of the door.

6. In paragraph 5, A dishwasher in which the tilting angle of the sensing surface of the above radar sensor is 25 degrees or more and 35 degrees or less.

7. In paragraph 4, A dishwasher in which the control unit determines that the user is within the predetermined detection range when it is determined that the user, whose height is greater than or equal to the minimum detection height of the proximity sensor in the vertical direction, is within a distance less than or equal to the maximum detection distance in the horizontal direction from the proximity sensor.

8. In paragraph 7, The above minimum detection height is, Dishwasher with a height of 100 cm or more and 110 cm or less.

9. In paragraph 7, The above maximum detection distance is, Dishwasher with a height of 75 cm or more and 85 cm or less.

10. In paragraph 4, The above setting time is a dishwasher that is 0.9 seconds or more and 1.1 seconds or less.

11. In paragraph 3, A light source element disposed inside the handle, receiving power to generate visible light, and irradiating the generated visible light to the outside of the handle; Including more, The step of moving the handle forward before the above washing course starts or after the above washing course is completed is, When it is determined that the user intends to open the door, a step of supplying power to the light source element to turn on the light source element before or simultaneously with the start of operation of the handle driving unit; Dishwasher including:

12. In paragraph 1, Based on the user's intention, the step of moving the handle forward is: Step of moving the handle forward during the above washing course: Dishwasher including.

13. In paragraph 12, The step of moving the handle forward during the above washing course is: A step of determining whether the user has the intention to open the door during the progress of the washing course; and When it is determined that the user intends to open the door, a step of supplying power to the handle driving unit to operate the handle driving unit so that the handle moves forward; Dishwasher including.

14. In paragraph 13, A proximity sensor for detecting whether the user is within a predetermined detection range from the door; and A first vibration sensor and a second vibration sensor are respectively positioned at different locations inside the door and are configured to detect the user's knock-on input through the door; Including more, The step of determining whether the user intends to open the door is as follows: A step of receiving an output signal from the proximity sensor; A step of determining whether the user is approaching within the predetermined detection range from the output signal received from the proximity sensor; A step of determining whether the user's proximity continues for a set period of time when it is determined that the user is approaching within the predetermined detection range; If it is confirmed that the proximity of the user continues for the set time, a step of receiving a first vibration signal from the first vibration sensor and a second vibration signal from the second vibration sensor; A step of calculating the maximum amplitude of the first vibration signal received from the first vibration sensor and the maximum amplitude of the second vibration signal received from the second vibration sensor; and A step of comparing the maximum amplitude of the first vibration signal and the maximum amplitude of the second vibration signal; Including, A dishwasher in which the control unit determines that the user has an intention to open the door when it determines that the maximum amplitude of the first vibration signal is greater than the maximum amplitude of the second vibration signal.

15. In paragraph 14, A dishwasher in which the first vibration sensor is positioned closer to the front surface of the door than the second vibration sensor.

16. In paragraph 14, The above first vibration sensor detects vibration in the first axial direction, The above second vibration sensor detects vibration in the second axial direction, A dishwasher in which the first axial direction and the second axial direction are mutually perpendicular directions.

17. In paragraph 16, The above first axial vibration becomes a horizontal vibration, A dishwasher in which the above second axial vibration is vertical vibration.

18. In paragraph 13, A light source element disposed inside the handle, receiving power to generate visible light, and irradiating the generated visible light to the outside of the handle; Including more, The step of moving the handle forward during the above washing course is: A step of supplying power to the light source element to turn on the light source element before or simultaneously with the start of operation of the handle driving unit, if it is determined that the maximum amplitude of the first vibration signal is greater than the maximum amplitude of the second vibration signal; Dishwasher including:

19. In paragraph 13, The step of moving the handle forward during the above washing course is: A step of stopping the operation of the handle driving unit when the forward movement of the door to the unfolded position is completed after operating the handle driving unit; and A step of temporarily stopping the ongoing washing course after operating the handle driving unit; Dishwasher including:

20. In paragraph 13, The step of pausing the ongoing washing course is as follows: A dishwasher that operates before or simultaneously with the operation of the handle driving unit being stopped.

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