Dishwasher

Abstract

The present invention relates to a dishwasher in which a handle is configured to protrude forward from a door only when necessary, such as when opening and closing the door, thereby preventing external foreign substances such as dust from being accumulated on the handle, and being maintained in a clean state, and significantly improving user convenience.

Description

dishwasher

[0001] The present invention relates to a dishwasher, and more particularly, to a dishwasher in which a handle is configured to protrude forward from a 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.

[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] On the other hand, in the case of dishwashers with a door without a handle (handle-less type), when the door is fully opened (at a large angle), a part of the door (e.g., the top) must be held to open it. In this case, there is a risk of the user being burned due to the hot steam generated when the entire dishwasher cycle is completed.

[0014] Accordingly, a structure in which the handle can be selectively opened and closed is required for the dishwasher.

[0015]

[0016] 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.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] In addition, the present invention provides a dishwasher in which the aesthetic appearance of the dishwasher can be improved by configuring the handle to be at least partially retracted and retracted toward the inside of the door in a situation where the use of the handle is unnecessary, and configuring the front end surface of the handle and the front surface of the door to have a sense of unity with each other.

[0024] In addition, the third object of the present invention is 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.

[0025] In addition, the fourth object of the present invention is to provide a dishwasher that can significantly reduce the possibility of injury to the user and damage to the handle by effectively detecting the user's finger or object being caught between the handle and the door during the retraction and retraction process of the handle, thereby improving stability and reliability.

[0026] 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.

[0027]

[0028] A dishwasher according to the present invention comprises: a tub that accommodates dishes and forms a washing space with an open front surface; 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 at least partially accommodated inside the door; and 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; wherein the handle driving unit comprises: a pivot link having one end rotatably disposed relative to the door and the other end rotatably connected to the handle; a driving cam that presses the pivot link so that the pivot link rotates forward when rotated in a forward direction and rotates rearward when rotated in a reverse direction; And it includes a driving motor that generates a rotational driving force to rotate the driving cam in the forward direction or the reverse direction; and is characterized in that the rotational axis of the driving motor is positioned lower than the handle.

[0029] In addition, the door may rotate to open and close the front surface of the tub, and the direction in which the door rotates around the rotation axis when the tub is opened and the direction in which the driving motor rotates when the handle moves toward the unfolding position may be the same.

[0030] In addition, the driving cam includes a cam body that rotates by the rotational driving force of the driving motor; and a driving pin that protrudes from one side of the cam body toward the pivot link; and the pivot link has a guide groove formed between the one end and the other end and into which the driving pin is inserted, and when the cam body rotates in the reverse direction or the forward direction, the driving pin can rotate the pivot link while moving relatively along the guide groove within the guide groove.

[0031] In addition, when the handle is moved to the deployment position, a virtual first extension line connecting the center of the driving pin and the rotation center of the cam body can form a predetermined intersection angle with a virtual second extension line that is parallel to the movement direction of the handle and passes through the rotation center of the cam body.

[0032] Additionally, the above-described intersection angle may be 5 degrees or less.

[0033] In addition, the door further includes a handle housing that is arranged inside the door and accommodates the handle when moved to the retracted position; and the handle housing may have a rail groove portion that guides reciprocating movement of the handle between the deployed position and the retracted position.

[0034] In addition, the handle is formed to protrude toward the rail groove and has a guide protrusion inserted into the rail groove, and when the handle is reciprocated, the guide protrusion can be reciprocated while being inserted into the rail groove.

[0035] In addition, the front surface of the door is provided with an opening through which the handle enters and exits during the reciprocating movement, and when the handle is moved to the retracted position, the opening can be closed by the handle.

[0036] In addition, a predetermined vertical gap is formed between the opening and the upper surface of the door, and a predetermined left-right gap is formed between the opening and the right and left sides of the door, and the vertical gap may be larger than the left-right gap.

[0037] Additionally, when the handle is moved to the retracted position, a step may not be formed between the front end surface of the handle and the front surface of the door.

[0038] In addition, the handle may include a first handle body that is exposed to the outside of the door when moved to the unfolding position; and a second handle body that is connected to the rear end of the first handle body and is placed inside the door.

[0039] Additionally, the vertical width of the second handle body may be larger than the vertical width of the first handle body.

[0040] In addition, when moving to the above-described unfolding position, the front surface of the second handle body may be positioned at the same forward-backward position as the front surface of the door or at a position further rearward.

[0041] In addition, the present invention further includes a control unit that controls power supplied to the handle driving unit to determine whether the handle driving unit is operated, and the control unit can perform a step of controlling the operation of the handle driving unit to prevent a user's hand or an object from being caught between the handle and the door when the handle is moved backward from the deployed position to the retracted position.

[0042] In addition, the method may further include a first safety sensor that detects whether the user's hand is present between the handle and the door, and the step of controlling the operation of the handle driving unit may include a step of determining whether the user's hand is detected between the handle and the door for a first set time or longer from an output signal received from the first safety sensor; a step of initiating operation of the handle driving unit so that the handle starts moving backward when the user's hand is determined to be detected for a first set time or longer in the step of determining whether the user's hand is detected, and a step of gradually decelerating the movement speed of the handle after the operation of the handle driving unit is initiated.

[0043] Additionally, the first safety sensor may include any one selected from an electrostatic touch sensor or an infrared sensor.

[0044] In addition, the step of controlling the operation of the handle driving unit may further include a step of generating the haptic vibration by operating the vibration element when it is determined that the user's hand is detected for a period of time longer than the first set time in the step of determining whether the user's hand is detected.

[0045] In addition, the step of controlling the operation of the handle driving unit may further include a step of re-determining whether the user's hand is continuously detected between the handle and the door from an output signal received from the first safety sensor after the step of gradually reducing the movement speed of the handle.

[0046] In addition, the step of controlling the operation of the handle driving unit may further include a step of stopping the operation of the handle driving unit to stop movement of the handle if it is determined that the user's hand is continuously detected in the step of re-determining whether the user's hand is continuously detected.

[0047] In addition, the method may further include a second safety sensor that detects whether an object exists between the handle and the door; and the step of controlling the operation of the handle driving unit may include: a step of initiating operation of the handle driving unit so that the handle starts moving backward when it is determined in the step of determining whether the user's hand is detected that the user's hand is not detected for a period of time longer than the first set time; a step of determining whether the object exists between the handle and the door from an output signal received from the second safety sensor after the operation of the handle driving unit is initiated; and a step of stopping operation of the handle driving unit to stop movement of the handle when it is determined that the object exists between the handle and the door, and operating the handle driving unit so that the handle moves forward toward the unfolding position after the handle is stopped.

[0048] Additionally, the second safety sensor may include any one selected from a strain sensor installed in the handle or the handle driving unit, or a current sensor that detects current supplied to the handle driving unit.

[0049] In addition, the step of controlling the operation of the handle driving unit may further include: a step of determining whether a second set time has elapsed after operating the handle driving unit so that the handle moves forward; a step of re-determining whether the object exists between the handle and the door from an output signal received from the second safety sensor if it is determined that the second set time has elapsed in the step of determining whether the object exists; and a step of operating the handle driving unit so that the handle moves backward toward the retracted position if it is determined that the object does not exist in the step of re-determining whether the object exists.

[0050]

[0051] 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.

[0052] 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.

[0053] 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.

[0054] In addition, the dishwasher according to the present invention is configured to effectively distinguish and detect the user's finger or object, etc., being caught between the handle and the door during the retraction and retraction process of the handle, thereby significantly reducing the possibility of injury to the user and damage to the handle.

[0055] 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.

[0056]

[0057] FIG. 1 is a front perspective view of a dishwasher according to an embodiment of the present invention.

[0058] Figure 2 is a schematic cross-sectional view of the dishwasher illustrated in Figure 1.

[0059] 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.

[0060] Figure 4 is a front side view showing the handle shown in Figure 3 moved to the unfolded position.

[0061] Figure 5 is an enlarged side view of Figure 3.

[0062] Figure 6 is a rear perspective view of the door illustrated in Figure 3, showing the door with its rear panel removed.

[0063] Fig. 7 is a rear perspective view of the handle driving unit illustrated in Fig. 5.

[0064] Fig. 8 is an exploded perspective view of the handle driving unit illustrated in Fig. 7.

[0065] 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.

[0066] 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.

[0067] Figure 11 is a side view showing the state in which movement to the unfolded position for the handle is completed.

[0068] 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.

[0069] 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.

[0070] Figure 14 is a partially enlarged view showing the handle and handle drive unit separated from the door.

[0071] Figure 15 is a rear perspective view showing the handle and handle drive unit installed and the handle frame supporting them.

[0072] Figure 16 is an exploded perspective view to explain the detailed configuration of the handle.

[0073] 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.

[0074] Figure 18 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.

[0075] Figure 19 is a flowchart illustrating the administrative process sequence performed in a dishwasher according to one embodiment of the present invention.

[0076] Figures 20 to 22 are flowcharts illustrating each step of a control method for a dishwasher according to an embodiment of the present invention.

[0077]

[0078] 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.

[0079] 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.

[0080] Throughout the specification, unless otherwise specifically stated, each element may be singular or plural.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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 various components or various steps described in the specification, and should be construed to mean that some of the components or some of the steps may not be included, or that additional components or steps may be included.

[0085] 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.

[0086] Hereinafter, the present invention will be described with reference to drawings showing a configuration according to an embodiment of the present invention.

[0087] [Overall structure of a dishwasher]

[0088] 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.

[0089] 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.

[0090] As illustrated in FIGS. 1 and 2, a dishwasher (1) according to the present invention comprises 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.

[0091] 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.

[0092] 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.

[0093] A washing space (21) is formed inside the tub (20), and the open front surface can be opened and closed by a door (30).

[0094] 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.

[0095] 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).

[0096] 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).

[0097] 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).

[0098] 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).

[0099] 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.

[0100] 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).

[0101] 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.

[0102] 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.

[0103] 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).

[0104] 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.

[0105] Meanwhile, the spray unit is provided to spray washing water onto dishes, etc. stored in the storage unit (50).

[0106] 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).

[0107] 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).

[0108] 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).

[0109] 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).

[0110] 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.

[0111] 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.

[0112] Meanwhile, a storage compartment (50) for storing dishes may be provided in the washing space (21).

[0113] The storage section (50) is provided so as to be withdrawable from the inside of the tub (20) through the open front surface of the tub (20).

[0114] 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.

[0115] These lower racks (51), upper racks (52) and top racks (53) can each be configured to be pulled out through the open front face of the tub (20).

[0116] 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.

[0117] 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.

[0118] 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).

[0119] Meanwhile, the door (30) has the purpose of opening and closing the open front surface of the above-described tub (20).

[0120] 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.

[0121] 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).

[0122] 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.

[0123] Meanwhile, the rear panel (30b) 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.

[0124] For this purpose, when the door (30) is fully opened, it is preferable that the rear panel (30b) 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.

[0125] 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).

[0126] 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.

[0127] Hereinafter, a handle movably provided 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).

[0128] Although not shown, the rear panel (30b) forming the inner side of the door (30) may further be equipped with a detergent supply device for automatically supplying detergent into the interior of the tub (20).

[0129] 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).

[0130] 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).

[0131] 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.

[0132] 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).

[0133] 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.

[0134] 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.

[0135] [Pop-up handle appearance and operation]

[0136] 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.

[0137] 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.

[0138] 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.

[0139] 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.

[0140] 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.

[0141] In order to withdraw and withdraw the pop-up handle (31), an opening (30e) 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 forward-rear direction (FR direction).

[0142] 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.

[0143] In more detail, considering the opening and closing movement of the door (30) that rotates around the bottom and considering the aesthetics of the user, it is preferable that the opening (30e) and the pop-up handle (31) be positioned as close as possible to the upper surface of the door (30).

[0144] That is, as shown in Fig. 3, the opening (30e) can be placed on the front panel (30a) in a state where a predetermined vertical distance (D1) is formed from the upper surface of the door (30).

[0145] Additionally, a predetermined left-right gap (D2) can be formed between the opening (30e) and the right and left sides of the door (30).

[0146] At this time, as shown in FIG. 3, it is preferable that the vertical gap (D1) between the opening (30e) and the upper surface of the door (30) be formed to be larger than the left-right gap (D2) between the opening and the right / left side of the door (30).

[0147] By setting the vertical distance (D1) to be larger than the left-right distance (D2), a certain amount of free space can be secured between the opening (30e) and the upper surface of the door (30), so that the user's accessibility and convenience of operation for the button portion (34) arranged on the upper surface of the door (30) can be somewhat improved.

[0148] In addition, 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).

[0149] 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).

[0150] 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).

[0151] 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).

[0152] 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.

[0153] 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.

[0154] 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).

[0155] 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.

[0156] 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.

[0157] 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).

[0158] 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).

[0159] 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.

[0160] 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.

[0161] 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.

[0162] 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).

[0163] 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).

[0164] For example, a means for detecting a user's intention to open the door (30) may include a proximity sensor (S_p).

[0165] The proximity sensor (S_p) can be a sensor that can detect whether a user is within a specific range from the door (30).

[0166] For example, the proximity sensor (S_p) may include any one of a radar sensor, an image sensor, or an infrared sensor (IR sensor).

[0167] 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).

[0168] As shown in FIGS. 3 and 4, the radar sensor as a proximity sensor (S_p) can be placed on the control panel (32) in a position close to the display (33) so that the proximity of the user can be easily confirmed and modularization with an existing display (33) can be easily achieved.

[0169] In this way, by placing the control panel (32) on the upper surface of the door (30), it is possible to distinguish between the user and non-user pets, etc.

[0170] 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 distance range from the door (30) through a radar sensor.

[0171] This is because there may be cases where a user simply passes by the dishwasher (1) without the intention of opening the door (30).

[0172] Accordingly, 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.

[0173] 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 distance range from the door (30) and continues to stay within the specific distance range for a specific time condition.

[0174] Here, the specific distance range and specific time conditions may be set differently depending on the environment in which the dishwasher (1) is placed and the physical condition of the user.

[0175] When a specific distance range condition and a specific time condition are satisfied, as described below, 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).

[0176] Figures 4 and 5 illustrate a state in which the pop-up handle (31) has completed forward movement to the deployed position (Pd).

[0177] 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.

[0178] 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.

[0179] 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).

[0180] 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).

[0181] 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).

[0182] 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).

[0183] To this end, the vertical width of the second handle body (312) can be formed to be larger than the vertical width of the first handle body (311), and can be formed to be larger than or equal to the vertical width of the opening (30e) of the front panel (30a).

[0184] In addition, when the movement to the deployment position (Pd) is completed, the front surface of the second handle body (312) may be positioned at the same forward-backward position as the front panel (30a) forming the front surface of the door (30), or may be positioned further rearward than the front panel (30a) forming the front surface of the door (30).

[0185] 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).

[0186] 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.

[0187] [Detailed configuration of the handle drive unit]

[0188] 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.

[0189] 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).

[0190] 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).

[0191] 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).

[0192] 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.

[0193] 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.

[0194] 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 of being arranged symmetrically with respect to the pop-up handle (31).

[0195] Therefore, each handle driving unit (35) can be configured identically to each other except that they have a symmetrical shape and are arranged symmetrically.

[0196] 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.

[0197] In general, the door (30) of the dishwasher (1) may be applied with a door (30) having a considerably thin thickness to secure a wider washing space and to allow the user to easily open the door (30).

[0198] Due to this thin thickness, there may be restrictions on the position of the drive motor (351) of the handle driving unit (35) that generates the driving force to automatically operate the pop-up handle (31).

[0199] More specifically, when the handle driving part (35) is placed immediately behind the pop-up handle (31), there is a problem that the thickness of the door (30) must be increased to the upper level.

[0200] In addition, when the handle driving part (35) is placed on the upper side of the pop-up handle (31), there is a possibility that it may overlap with the control part (100) placed on the upper side of the door (30).

[0201] In addition, if the vertical position of the pop-up handle (31) is lowered to avoid overlapping with the control unit (100), the lowering of the position of the pop-up handle (31) may cause inconvenience in gripping the pop-up handle (31), and the pop-up handle (31) may catch the user's eye, resulting in an aesthetically unsightly problem.

[0202] Taking these matters into consideration, the driving motor (351) constituting the handle driving unit (35) may be placed at the bottom of the pop-up handle (31) and at a position lower than the opening (30e) of the door (30).

[0203] 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).

[0204] The drive motor (351) receives power and generates rotational driving force.

[0205] 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).

[0206] 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.

[0207] 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.

[0208] 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. At this time, as illustrated, the output shaft (3512) of the driving motor (351) extends in the left-right direction parallel to the front surface of the door (30). Accordingly, the direction in which the door (30) rotates around the rotation axis when the tub (20) is opened and the direction in which the output shaft (3512) of the drive motor (351) rotates in the forward direction when the pop-up handle (31) moves toward the unfolded position can be formed to be the same.

[0209] 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).

[0210] 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).

[0211] Through this, the output shaft (3512) of the drive motor (351) can be rotated integrally with the drive cam (352).

[0212] In addition, the rotational driving force is configured to be transmitted at an intermediate position between one end and the other end of the pivot link (353) through the driving cam (352) described later, and as described above, considering the relative position with respect to the control unit (100), the thickness of the door (30), etc., the output shaft (3512), which is the rotation axis of the driving motor (351), as shown in FIG. 10 or below, can be placed at a lower position in the vertical direction than the pop-up handle (31).

[0213] 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).

[0214] 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).

[0215] 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).

[0216] The cam body (3521) may be provided in the form of a disc having an approximately constant thickness, for example.

[0217] 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.

[0218] 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.

[0219] Meanwhile, the drive pin (3523) serves to transmit the rotational driving force of the cam body (3521) to the pivot link (353).

[0220] 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.

[0221] Therefore, when the cam body (3521) rotates around the shaft hole (3522), the drive pin (3523) revolves around the shaft hole (3522).

[0222] 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.

[0223] 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.

[0224] 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.

[0225] 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).

[0226] As illustrated, the stopper projection (3524) may be a predetermined step formed on the edge of the cam body (3521).

[0227] 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.

[0228] 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).

[0229] 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).

[0230] 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.

[0231] 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).

[0232] 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.

[0233] 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.

[0234] 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).

[0235] 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.

[0236] 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.

[0237] 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.

[0238] 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.

[0239] 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.

[0240] 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 relative to the extension direction of the guide groove (3533) while being inserted into the guide groove (3533).

[0241] 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.

[0242] 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).

[0243] 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.

[0244] 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).

[0245] 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).

[0246] 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.

[0247] 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).

[0248] For this purpose, a pin guide hole (3543) formed through the left and right directions may be formed in the link connection portion (3542).

[0249] 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 that it moves relative to the up-down direction while being inserted into the pin guide hole (3543).

[0250] 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.

[0251] 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).

[0252] 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).

[0253] 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).

[0254] 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).

[0255] 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).

[0256] In this way, the second extension (353b) is formed to be bent or curved toward the pop-up handle (31), thereby greatly increasing the stroke (Ls) for pushing or pulling the second handle body (312) of the pop-up handle (31).

[0257] [Movement of the pop-up handle according to the operation of the handle drive unit]

[0258] 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.

[0259] 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).

[0260] Referring to Fig. 10, when the pop-up handle (31) is moved to the retracted position (Pa) and power is supplied to the drive motor (351) in a stopped state, the drive motor (351) starts operating, and the drive motor (351) generates a forward rotational driving force.

[0261] Accordingly, forward rotation of the output shaft (3512) of the drive motor (351) is initiated, and forward rotation of the drive cam (352) forcibly connected to the output shaft (3512) can be initiated.

[0262] 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.

[0263] Meanwhile, as the forward rotation of the drive cam (352) is initiated, the forward revolution of the drive pin (3523) can be initiated.

[0264] As shown in Fig. 10, the driving pin (3523) positioned at the bottom of the guide groove (3533) of the pivot link (353) can start to move relative to the top of the guide groove (3533).

[0265] 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).

[0266] 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.

[0267] Accordingly, the driving pin (3523) located at the bottom of the guide hole (3543) of the link connector (354) moves relative to the top of the guide hole (3543).

[0268] 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).

[0269] 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.

[0270] Fig. 11 shows a state in which the pop-up handle (31) has completed forward movement to the deployment position (Pd) and has stopped.

[0271] 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).

[0272] 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).

[0273] 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) may be formed to be a very small angle.

[0274] For example, the intersection angle (a) can be 0 degrees or more and 5 degrees or less.

[0275] 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).

[0276] 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.

[0277] 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.

[0278] Figure 12 illustrates a situation in which the pop-up handle (31) automatically moves backward in the backward direction (Drw) from the deployed position (Pd) toward the retracted position (Pa).

[0279] Referring to Fig. 12, when a predetermined waiting time has elapsed after the pop-up handle (31) has moved to the deployment position (Pd) and stopped, 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. As described below, the predetermined waiting time may be 2.5 seconds or more and 3.5 seconds.

[0280] Accordingly, the reverse rotation of the output shaft (3512) of the drive motor (351) is initiated, and the reverse rotation of the drive cam (352) forcibly connected to the output shaft (3512) can be initiated.

[0281] 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.

[0282] Meanwhile, as the reverse rotation of the drive cam (352) is initiated, the reverse revolution of the drive pin (3523) can be initiated.

[0283] 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).

[0284] 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).

[0285] 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.

[0286] 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).

[0287] 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).

[0288] 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.

[0289] [Linear movement guide for pop-up handles]

[0290] 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).

[0291] 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).

[0292] 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.

[0293] 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) and the retracted position (Pa).

[0294] 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).

[0295] 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).

[0296] 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).

[0297] 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.

[0298] 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.

[0299] 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.

[0300] 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).

[0301] 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).

[0302] 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.

[0303] 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).

[0304] 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.

[0305] 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.

[0306] A protruding surface portion (30d46) of the handle housing (30d4) described later can be inserted into the notch portion (3122c).

[0307] In response to the shape of the notch portion (3122c), the width of the protruding surface portion (30d46) in the left and right directions can be maintained constant.

[0308] 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.

[0309] 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).

[0310] 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).

[0311] 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).

[0312] 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).

[0313] The panel portion (30d1) and the outer wall portion (30d3) of the handle frame (30d) can be aligned on the inner surface of the front panel (30a) or inner panel (30c) of the door (30).

[0314] Meanwhile, the handle frame (30d) may further include a handle housing (30d4) to movably accommodate and support the pop-up handle (31).

[0315] 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).

[0316] The open front surface of the handle housing (30d4) can be an opening (30d2) through which the first handle housing (30d4) enters and exits.

[0317] 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.

[0318] 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).

[0319] 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).

[0320] 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 (30d41) in a downward direction.

[0321] Meanwhile, as illustrated, a cutting portion (30d44) may be formed on the lower surface (30d42) of the handle housing (30d4) to provide a movement path for the pivot link (353) of the handle driving portion (35).

[0322] [Detailed structure of the pop-up handle]

[0323] Figure 16 shows the detailed configuration of the pop-up handle (31) placed on the front side of the first handle body (311) described above.

[0324] 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).

[0325] 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.

[0326] 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.

[0327] 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).

[0328] 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).

[0329] Meanwhile, the light guide plate (314) serves to diffuse visible light generated from the light source element (3131).

[0330] 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) and spread toward the edge of the light guide plate (314).

[0331] 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.

[0332] 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).

[0333] 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.

[0334] 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.

[0335] 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) via the inside of the light guide plate (314), and the user can effectively check the operating ecology of the pop-up handle (31) through the light projected through the edge of the light guide plate (314) in this way.

[0336] 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.

[0337] 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).

[0338] Accordingly, in the dishwasher (1) according to one embodiment of the present invention, there is a possibility that the user's hand or an object may be 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.

[0339] As one means for warning of such a jamming phenomenon, a vibration element (3132) may be provided in the pop-up handle (31).

[0340] 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.

[0341] As shown in Fig. 16, the vibration element (3132) can be mounted on the handle substrate (313).

[0342] 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.

[0343] Meanwhile, the pop-up handle (31) may further be provided with a means for detecting a jamming phenomenon.

[0344] As described below, the means for detecting the jamming phenomenon may be referred to as a first safety sensor (S_sf1) and a second safety sensor (S_sf2).

[0345] The first safety sensor (S_sf1) detects whether the user's hand is caught.

[0346] For example, the first safety sensor (S_sf1) may include either a touch sensor (S_t) or an infrared sensor (S_if).

[0347] 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.

[0348] 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).

[0349] 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).

[0350] 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).

[0351] 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.

[0352] 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).

[0353] 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).

[0354] [Control unit configuration and control method]

[0355] 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. 18.

[0356] As illustrated in FIG. 18, a dishwasher (1) according to one embodiment of the present invention may include a control unit (100) for controlling each functional module.

[0357] The control unit (100) may be provided in various forms, such as a microcontroller, microcomputer, or microprocessor, as is known in the art.

[0358] 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 start or stop the operation of the drive motor (351) by controlling the power supplied to the drive motor (351) from the power supply unit (48) described later.

[0359] When the control unit (100) confirms the user's intention to open the door (30) through a proximity sensor (S_p) described later, etc., the control unit (100) 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).

[0360] 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.

[0361] The given waiting time here can be between 2.5 seconds and 3.5 seconds.

[0362] Setting a predetermined waiting time in this way can be a range selected by taking into account the time it takes for a user to remove his / her hand from the pop-up handle (31) after gripping the pop-up handle (31) to open the door (30).

[0363] 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).

[0364] 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.

[0365] 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).

[0366] 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) needs to be opened while the door (30) is closed, the control unit (100) can operate the handle driving unit (35) to move the pop-up handle (31) forward to the unfolding position (Pd).

[0367] 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 range of the door (30) through a signal received from the proximity sensor (S_p).

[0368] As described above, the proximity sensor (S_p) may include any one of a radar sensor, an image sensor, or an infrared sensor.

[0369] In addition, the control unit (100) may be electrically connected to the first safety sensor (S_sf1). As described above, the first safety sensor (S_sf1) detects whether the user's hand is caught between the pop-up handle (31) and the door (30). The control unit (100) may determine whether the user's hand is caught between the pop-up handle (31) and the door (30) through a signal received from the first safety sensor (S_sf1).

[0370] As described above, the first safety sensor (S_sf1) may include either a touch sensor (S_t) or an infrared sensor (S_if).

[0371] Additionally, the control unit (100) may be electrically connected to a second safety sensor (S_sf2). As described above, the second safety sensor (S_sf2) detects whether an object other than the user's hand exists between the pop-up handle (31) and the door (30).

[0372] The control unit (100) can determine whether an object is caught between the pop-up handle (31) and the door (30) through a signal received from the second safety sensor (S_sf2).

[0373] As described above, 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.

[0374] 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).

[0375] 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) simultaneously or sequentially when the forward movement of the pop-up handle (31) is initiated to generate visible light or light.

[0376] 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.

[0377] In addition, if the control unit (100) determines that the user's hand or an object is caught between the pop-up handle (31) and the door (30) after the backward movement of the pop-up handle (31) is initiated through output signals received from the first safety sensor (S_sf1) or the second safety sensor (S_sf2), the control unit (100) can supply power to the vibration element (3132) to generate a predetermined haptic vibration to warn the user.

[0378] As described above, the vibration element (3132) may include either a piezoelectric element or a haptic motor.

[0379] As described below, the control unit (100) generates haptic vibration for the purpose of a primary warning through the vibration element (3132), but if the user's hand continues to be detected thereafter, the intensity of the haptic vibration can be increased by increasing the intensity of the power supplied to the vibration element (3132).

[0380] Additionally, the control unit (100) can be electrically connected to an audio output unit that generates voice output or sound output.

[0381] As described below, when the control unit (100) detects that the user's hand or object is caught through the first safety sensor (S_sf1) or the second safety sensor (S_sf2), the control unit can generate a voice alarm or an audio alarm through the audio output unit to induce the user to remove the hand or object from the pop-up handle (31).

[0382] For example, a voice alarm may include guidance or warning information such as, "Please take your hands off the handle. I will close the handle" or "Please remove the object from the handle. I will close the handle."

[0383] 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.

[0384] Furthermore, as described later, information regarding the first actual time and information regarding the second set time, which serve as a time standard for switching the operation of the handle driving unit (35), can be further stored in the memory.

[0385] 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.

[0386] Here, each process may include a pre-washing process (S1), a washing process (S2), a rinsing process (S3), a heating rinsing process (S4), and a drying process (S5) as illustrated in FIG. 19.

[0387] Hereinafter, a control method of a dishwasher (1) according to the present invention will be described with reference to FIGS. 19 to 22.

[0388] As illustrated in Fig. 19, the control unit (100) controls the overall progress of the washing course of the dishwasher (1) that proceeds in the following order: pre-washing course (S1), washing course (S2), rinsing course (S3), heating rinsing course (S4), and drying course (S5).

[0389] 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.

[0390] 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.

[0391] 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).

[0392] 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.

[0393] 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.

[0394] A water supply cycle may be included before the pre-wash cycle (S1).

[0395] 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).

[0396] 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.

[0397] 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).

[0398] 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).

[0399] In addition, if the control unit (100) additionally confirms the user's intention to open the door (30) through an additional detection means not shown, the control unit (100) can control the pop-up handle (31) to move forward from the retracted position (Pa) even while the washing course is in progress.

[0400] This is to prepare for cases where the door (30) is opened during the washing cycle, such as when adding dishes to be washed.

[0401] 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.

[0402] FIG. 20 illustrates an embodiment of a control method of a dishwasher (1) according to the present invention, in which a step (S20) of controlling the operation of a handle driving unit (35) is shown to prevent a user's hand or an object from being caught between the pop-up handle (31) and the door (30) when the pop-up handle (31) moves backward.

[0403] As described above, if the control unit (100) confirms the user's intention to open the door (30) through the proximity sensor (S_p) before the start of the selected washing course and after the completion of the selected 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 to automatically move the pop-up handle (31) forward from the retracted position (Pa) to the deployed position (Pd) and performs the step (S10) of completing the movement of the handle driving unit (35).

[0404] Step S20 can be performed after a predetermined waiting time has elapsed after the forward movement of the pop-up handle (31) is completed.

[0405] As mentioned above, the predetermined waiting time can be 2.5 seconds or more and 3.5 seconds or more.

[0406] Figures 21 and 22 illustrate detailed steps of step S20.

[0407] First, referring to FIG. 21, the control unit (100) first receives an output signal from the door position sensor (S_d), and determines whether the current door (30) is closed or open based on the received output signal of the door position sensor (S_d). (S201, S202)

[0408] In this way, checking whether the door (30) is open or closed takes into account that the process of closing the door (30) by the user using the pop-up handle (31) may be performed later since the door (30) is open. That is, the backward movement of the pop-up handle (31) may be initiated after the user closes the door (30) by using the pop-up handle (31).

[0409] At step S202, if it is confirmed that the current door (30) is closed, the control unit (100) receives an output signal from the first safety sensor (S_sf1). (S203)

[0410] The first safety sensor (S_sf1) may include either a touch sensor (S_t) or an infrared sensor (S_if).

[0411] When an output signal is received from the first safety sensor (S_sf1) at step S203, the control unit (100) determines whether the user's hand is detected between the pop-up handle (31) and the door (30) for a first set time based on the received output signal of the first safety sensor (S_sf1). (S204)

[0412] Here, the first setting time can be 0.4 seconds or more and 0.6 seconds or less, and preferably 0.5 seconds.

[0413] In this way, even if the user's hand is detected to be caught between the pop-up handle (31) and the door (30) through the first safety sensor (S_sf1), checking whether the user's hand is continuously detected for a period of time longer than the first set time is done in consideration of the fact that a temporary touch action of the user may occur and that the user may immediately take an action to remove his hand from the pop-up handle (31).

[0414] If it is determined that the user's hand is detected between the pop-up handle (31) and the door (30) for a first set time or longer from the output signal of the first safety sensor (S_sf1) at step S204, the control unit (100) supplies power to the vibration element (3132) to operate the vibration element (3132) and generate haptic vibration in the pop-up handle (31). (S205)

[0415] This may be a primary haptic vibration alarm to notify that the backward movement of the pop-up handle (31) will be initiated immediately, which may result in injury to the user's hand.

[0416] When the first haptic vibration alarm is generated at step S205, the control unit (100) can supply power to the drive motor (351) to drive the drive motor (351) in the reverse direction to initiate backward movement of the pop-up handle (31). (S206)

[0417] At this time, the control unit (100) can control the power supplied to the drive motor (351) so that the drive motor (351) is driven at a normal speed when the pop-up handle (31) starts operating, but the rotation speed of the drive motor (351) is gradually reduced after the operation starts.

[0418] In this way, by reducing the rotational speed of the driving motor (351), the backward movement speed of the pop-up handle (31) can be reduced, and the possibility of injury to the user's hand can be further reduced.

[0419] When the backward movement of the pop-up handle (31) is initiated at step S206, the control unit (100) determines whether the user's hand is continuously detected through the output signal of the first safety sensor (S_sf1). (S207)

[0420] If it is determined that the user's hand is still detected even after the backward movement of the pop-up handle (31) has been initiated at step S207, the control unit (100) cuts off the power supplied to the drive motor (351) of the handle driving unit (35) to stop the operation of the drive motor (351) and stop the backward movement of the pop-up handle (31) for the safety of the user and to prevent injury. (S208)

[0421] When the backward movement of the pop-up handle (31) is stopped at step S208, the control unit (100) increases the intensity of the power supplied to the vibration element (3132) to increase the intensity of the haptic vibration of the pop-up handle (31) and generates a voice alarm through the sound output unit. (S209)

[0422] Here, the increased intensity haptic vibration can serve as a secondary haptic vibration alert to warn the user that their hands are in a very dangerous state.

[0423] Additionally, the voice alarm may include information that warns the user that their hands are in a dangerous position, such as, for example, 'Please take your hands off the steering wheel. I will close the steering wheel.'

[0424] When a secondary haptic vibration alarm and voice alarm are generated in step S209, the control unit (100) can move to the aforementioned step S207 to determine whether the user's hand is still detected.

[0425] Meanwhile, if it is determined that the user's hand is not detected after the backward movement of the pop-up handle (31) is initiated at step S207, the control unit (100) supplies normal power to the drive motor (351) so that the drive motor (351) is driven in reverse at a normal speed since the current user's hand is removed from the pop-up handle (31) and the dangerous state is resolved. (S210)

[0426] Accordingly, the pop-up handle (31) can continue to drive backward at normal speed.

[0427] In this way, when the backward driving of the pop-up handle (31) continues and the backward movement of the pop-up handle (31) to the retreat position (Pa) is completed, the control unit (100) can cut off the power supplied to the driving motor (351) to stop the operation of the handle driving unit (35) and complete the backward movement of the pop-up handle (31). (S30)

[0428] Meanwhile, if it is determined at step S204 that the user's hand is not detected between the pop-up handle (31) and the door (30) for a first set time or longer based on the output signal of the first safety sensor (S_sf1), the control unit (100) may determine that the user's safety is secured and supply power to the drive motor (351) to drive the drive motor (351) in the reverse direction to initiate backward movement of the pop-up handle (31). (S211)

[0429] In this case, the control unit (100) can supply normal power to the drive motor (351) so that the drive motor (351) can be driven at a normal speed, thereby moving the pop-up handle (31) backward at a normal speed.

[0430] When the backward movement of the pop-up handle (31) is initiated at step S211, the control unit (100) receives an output signal from the second safety sensor and determines whether an object is caught between the pop-up handle (31) and the door (30) based on the received output signal of the second safety sensor (S_sf2). (S212, S213)

[0431] As described above, 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.

[0432] If an object is detected to be caught between the pop-up handle (31) and the door (30) at step S213, the control unit (100) stops the drive motor (351) by cutting off the power supplied to the drive motor (351) to prevent damage to the pop-up handle (31) or the handle driving unit (35) due to the object being caught, and immediately re-supplies the power so that the drive motor (351) is driven in the forward direction. (S214)

[0433] Through this, the pop-up handle (31) can be moved forward again toward the deployment position (Pd), and damage or breakage of the pop-up handle (31) and the handle driving part (35) due to the object being caught can be minimized.

[0434] Meanwhile, after the forward movement of the pop-up handle (31) is initiated at step S214, the control unit (100) supplies power to the vibration element (3132) to operate the vibration element (3132) and generate haptic vibration in the pop-up handle (31). (S215)

[0435] After the haptic vibration is generated in step S215 or simultaneously therewith, the control unit (100) generates a voice alarm through the sound output unit. (S216)

[0436] Here, the voice alarm may include information warning that an object is caught between the pop-up handle (31) and the door (30) and the pop-up handle (31) cannot be moved backward, such as, for example, 'Please remove the object from the handle. I will close the handle.'

[0437] After a voice alarm is generated at step S216, the control unit (100) determines through a timer whether the elapsed time after the driving motor (351) is driven in the forward direction has elapsed a predetermined second set time. (S217)

[0438] Here, the second setting time can be 9 seconds or more and 11 seconds or less, and preferably 10 seconds.

[0439] In this way, the waiting time by moving the pop-up handle (31) forward until the second set time has elapsed can be set by taking into account the elapsed time until the user recognizes the state of an object being stuck through a voice alarm or the like and removes the stuck object from the pop-up handle (31).

[0440] If it is determined that the elapsed time after the drive motor (351) is driven in the forward direction at step S217 has passed the second set time, the control unit (100) determines whether an object is detected again between the pop-up handle (31) and the door (30) through an output signal received from the second safety sensor. (S218)

[0441] If an object is detected again between the pop-up handle (31) and the door (30) at step S218, the control unit (100) can return to the aforementioned step S215 and continue to repeat the subsequent steps.

[0442] Meanwhile, if the object being caught between the pop-up handle (31) and the door (30) is not detected again at step S218, i.e., if the object being caught is determined to be resolved, the control unit (100) supplies normal power to the drive motor (351) so that the drive motor (351) is driven in reverse at normal speed. (S219)

[0443] Accordingly, the pop-up handle (31) can be started to move backward at a normal speed from the deployed position (Pd).

[0444] In this way, when the backward driving of the pop-up handle (31) continues and the backward movement of the pop-up handle (31) to the retreat position (Pa) is completed, the control unit (100) can cut off the power supplied to the driving motor (351) to stop the operation of the handle driving unit (35) and complete the backward movement of the pop-up handle (31). (S30)

[0445] 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.

[0446]

[0447]

Claims

1. A tub that accommodates dishes and forms a washing space with an open front; 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 inside the door; and 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; Including, The above handle driving part is, A pivot link having one end rotatably arranged relative to the door and the other end rotatably connected to the handle; A driving cam that pressurizes the pivot link so that the pivot link rotates forward when rotating in a forward direction, and pressurizes the pivot link so that the pivot link rotates backward when rotating in a reverse direction; and A driving motor that generates a rotational driving force to rotate the driving cam in the forward or reverse direction; Including, A dishwasher in which the rotational axis of the above driving motor is positioned lower than the handle.

2. In paragraph 1, The above door opens and closes the front surface of the above tub while rotating, A dishwasher in which the direction in which the door rotates around the rotation axis when the tub is opened and the direction in which the drive motor rotates when the handle moves toward the unfolded position are the same.

3. In paragraph 1, The above driving cam is, A cam body that rotates by the rotational driving force of the above driving motor; and A driving pin protruding from one side of the cam body toward the pivot link; Including, The above pivot link is formed between the one end and the other end and has a guide groove into which the driving pin is inserted, A dishwasher in which, when the cam body rotates in the reverse or forward direction, the driving pin rotates the pivot link while moving relative to the guide groove inside the guide groove.

4. In paragraph 3, When the above handle is moved to the above unfolded position, A dishwasher in which a virtual first extension line connecting the center of the driving pin and the center of rotation of the cam body is parallel to the direction of movement of the handle and forms a predetermined intersecting angle with a virtual second extension line passing through the center of rotation of the cam body.

5. In paragraph 4, The above specified intersection angle is, Dishwasher that is set to 5 degrees or less.

6. In paragraph 1, A handle housing disposed inside the door and receiving the handle when moved to the retracted position; Including more, A dishwasher in which the handle housing has a rail groove portion that guides the reciprocating movement of the handle between the expanded position and the retracted position.

7. In paragraph 6, The above handle is formed to protrude toward the rail groove and has a guide projection inserted into the rail groove, A dishwasher in which the guide protrusion moves back and forth while being inserted into the rail groove during the reciprocating movement of the handle.

8. In paragraph 1, The front surface of the above door is provided with an opening through which the handle enters and exits during the reciprocating movement, A dishwasher in which the opening is closed by the handle when the handle is moved to the retracted position.

9. In paragraph 1, A predetermined vertical gap is formed between the above opening and the upper surface of the door, A predetermined left-right gap is formed between the above opening and the right and left sides of the door, A dishwasher in which the above vertical gap is greater than the above left-right gap.

10. In paragraph 8, When the above handle is moved to the above retracted position, A dishwasher in which no step is formed between the front end surface of the handle and the front surface of the door.

11. In paragraph 1, The above handle is, A first handle body exposed to the outside of the door when moved to the above-mentioned unfolding position; and A second handle body connected to the rear end of the first handle body and positioned inside the door: Dishwasher including.

12. In paragraph 11, A dishwasher in which the vertical width of the second handle body is greater than the vertical width of the first handle body.

13. In paragraph 12, A dishwasher in which, when moved to the above-described unfolding position, the front surface of the second handle body is positioned at the same forward-backward position as the front surface of the door or at a position further rearward.

14. In paragraph 1, A control unit that controls the power supplied to the handle driving unit to determine whether the handle driving unit is operating; Including more, The above control unit, A dishwasher that performs a step of controlling the operation of the handle driving unit to prevent a user's hand or an object from being caught between the handle and the door when the handle moves backward from the unfolded position to the retracted position.

15. In paragraph 14, A first safety sensor that detects whether the user's hand is present between the handle and the door; Including more, The step of controlling the operation of the above handle driving unit is: A step of determining whether the user's hand is detected between the handle and the door for a first set time or longer from an output signal received from the first safety sensor; In the step of determining whether the user's hand is detected, if it is determined that the user's hand is detected for a period of time longer than the first set time, a step of initiating operation of the handle driving unit so that the handle starts moving backward, and gradually reducing the movement speed of the handle after the operation of the handle driving unit is initiated; Dishwasher including.

16. In paragraph 15, A dishwasher wherein the first safety sensor comprises one selected from an electrostatic touch sensor and an infrared sensor.

17. In paragraph 15, A vibration element disposed on the handle and generating haptic vibration; Including more, The step of controlling the operation of the above handle driving unit is: In the step of determining whether the user's hand is detected, if it is determined that the user's hand is detected for a period of time longer than the first set time, a step of operating the vibration element to generate the haptic vibration; Dishwasher including:

18. In paragraph 15, The step of controlling the operation of the above handle driving unit is: A step of re-determining whether the user's hand is continuously detected between the handle and the door from an output signal received from the first safety sensor after the step of gradually reducing the movement speed of the handle; Dishwasher including:

19. In paragraph 18, The step of controlling the operation of the above handle driving unit is: A step of re-determining whether the user's hand is continuously detected, and if it is determined that the user's hand is continuously detected, a step of stopping the operation of the handle driving unit to stop the movement of the handle; Dishwasher including:

20. In paragraph 15, A second safety sensor that detects whether an object exists between the handle and the door; Including more, The step of controlling the operation of the above handle driving unit is: In the step of determining whether the user's hand is detected, if it is determined that the user's hand is not detected for a period of time longer than the first set time, a step of initiating operation of the handle driving unit so that the handle starts moving backward; A step of determining whether an object exists between the handle and the door from an output signal received from the second safety sensor after the operation of the handle driving unit is initiated; and When it is determined that an object exists between the handle and the door, a step of stopping the operation of the handle driving unit to stop movement of the handle, and operating the handle driving unit so that the handle moves forward toward the unfolded position after the handle is stopped; Dishwasher including.

21. In paragraph 20, The above second safety sensor, A dishwasher comprising one selected from among a strain sensor installed in the handle or the handle driving unit, or a current sensor detecting current supplied to the handle driving unit.

22. In paragraph 20, The step of controlling the operation of the above handle driving unit is: A step of determining whether a second set time has elapsed after operating the handle driving unit to move the handle forward; In the step of determining whether the second set time has elapsed, if it is determined that the second set time has elapsed, a step of re-determining whether the object exists between the handle and the door from the output signal received from the second safety sensor; A step of operating the handle driving unit so that the handle moves backward toward the retreat position when the object is determined not to exist in the step of re-determining whether the object exists; Dishwasher including:

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