Drawer-type dishwasher and control method thereof

Abstract

The application discloses a drawer type dish washing machine, which comprises a box body and an inner container. The inner container is arranged in the box body in a push-pull mode. A supporting piece is arranged at the bottom of the inner container. The supporting piece is arranged on the front side of the bottom plate of the box body. A first adsorption assembly is arranged on the supporting piece. A second adsorption assembly is arranged at the corresponding position of the bottom plate. The application also discloses a control method of the drawer type dish washing machine. During the process of pulling out the inner container from the box body, the second adsorption assembly passes forward current to make the first adsorption assembly and the second adsorption assembly be attracted to each other. During the process of pushing the inner container into the box body, the second adsorption assembly passes reverse current to make the first adsorption assembly and the second adsorption assembly be repelled to each other. The magnetic attraction force or the magnetic repulsion force generated between the adsorption assemblies is used to control the movement speed of the inner container. The inner container is pulled out from the box body and finally stays in a set range. The movement stroke of the inner container is avoided to be excessive. The impact force generated when the inner container is completely pushed into the box body is reduced. The dish washing machine or tableware is avoided to be damaged due to the collision.

Description

Technical Field

[0001] This invention relates to a dishwasher in the field of kitchen appliance technology, and more specifically, to a drawer-type dishwasher and its control method. Background Technology

[0002] Dishwashers are devices that automatically clean bowls, chopsticks, plates, dishes, knives, forks, and other tableware. As people's living standards improve, their demands for quality of life are increasing, and dishwashers are gradually being recognized and accepted. Dishwashers are categorized into sink-type, built-in, and drawer-type. Drawer-type dishwashers are characterized by their ability to be integrated into cabinets, their compact structure, and their ability to be operated without squatting or bending over. Therefore, as a relatively new type of dishwasher, drawer-type dishwashers are favored by many users.

[0003] Currently, most dishwashers on the market use automatic door opening devices to drive the opening and closing of the dishwasher door, especially drawer-type dishwashers. However, automatic door opening devices have the problem of not being able to guarantee the movement range of the door and the inner tub. During the automatic opening process, due to the elastic force provided by the damping of the automatic door opening device and the slide rail, after the dishwasher door and the automatic door opening device separate, the door and the inner tub continue to slide for a certain distance due to inertia, resulting in excessive movement range of the door and the inner tub. During the closing process, the dishwasher door and the inner tub move rapidly into the dishwasher cabinet, which may cause unnecessary damage and destruction to the dishwasher and the dishes inside.

[0004] Chinese patent application number CN201721929717.X discloses a door opening drive device for a dishwasher, including an inner tub assembly and a housing. A guide rail is provided in the housing, and the inner tub assembly is set on the guide rail. The dishwasher achieves automatic door opening through the door opening drive device. However, it does not disclose how the drive device controls the movement of the dishwasher inner tub after the door is opened, or how the drive device avoids collision between the dishwasher inner tub and the cabinet during the door closing process.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a drawer-type dishwasher to achieve the purpose of safely pulling out or pushing in the inner liner of the drawer-type dishwasher; another objective of the present invention is to provide a control method for a drawer-type dishwasher to achieve the purpose of controlling the movement of the inner liner within a set range or reducing the impact force between the inner liner and the cabinet.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0008] A drawer-type dishwasher includes a cabinet and an inner liner. The inner liner is slidably installed inside the cabinet. A support member is provided at the bottom of the inner liner. The support member is located on the front side of the bottom plate of the cabinet. A first adsorption component is provided on the support member, and a second adsorption component is provided at a corresponding position on the bottom plate.

[0009] Furthermore, the first adsorption component and / or the second adsorption component are magnetic elements that change the magnetic poles by controlling the direction of the current, and the first adsorption component and the second adsorption component attract or repel each other; preferably, the first adsorption component is a permanent magnet and the second adsorption component is an electromagnet.

[0010] Furthermore, the front end of the base plate is provided with an upwardly bent flange, and the second adsorption component is disposed on the flange; the support member includes a vertically downward extending connecting part, which is located on the front side of the flange, and the first adsorption component is disposed on the connecting part.

[0011] Furthermore, the first adsorption component and the second adsorption component are arranged correspondingly front and back along the inner liner pushing and pulling direction, and the first adsorption component and the second adsorption component are at the same height.

[0012] Furthermore, the support also includes a fixing part extending along the push-pull direction of the inner liner. The connecting part and the fixing part are connected in an inverted L-shape at a bend. The fixing part is provided with mounting holes and is fixed to the bottom of the inner liner by corresponding screws.

[0013] Furthermore, the base plate is also equipped with a retractable drive device, and the front end of the base plate is provided with an upwardly bent flange with an opening. The retractable end of the drive device passes through the opening and abuts against the support member.

[0014] Furthermore, a ranging element is provided on the base plate or support for measuring the relative distance between the first adsorption component and the second adsorption component.

[0015] A control method for any of the above-described drawer-type dishwashers, wherein during the process of the inner liner being pulled out of the cabinet, a positive current is applied to the second adsorption component to attract the first adsorption component and the second adsorption component; or during the process of the inner liner being pushed into the cabinet, a reverse current is applied to the second adsorption component to repel the first adsorption component and the second adsorption component.

[0016] Furthermore, during the process of pulling the inner liner out of the box, if the relative distance between the first adsorption component and the second adsorption component is greater than S1, the second adsorption component is supplied with a positive current.

[0017] Furthermore, during the process of pushing the inner liner into the box, if the relative distance between the first adsorption component and the second adsorption component is less than S2, the second adsorption component is supplied with a reverse current.

[0018] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0019] 1. By installing adsorption components on the bottom plate and support of the dishwasher, and controlling the mutual attraction or repulsion between the adsorption components, the movement of the inner tub being pulled out of the cabinet is kept within a set range, or the impact force generated when the inner tub is fully pushed into the cabinet is reduced, thus preventing damage to the dishwasher and the dishes inside the dishwasher due to vibration.

[0020] 2. During the process of pulling the inner tub out of the cabinet, especially in dishwashers that use a drive device to automatically open the door, after the inner tub and the drive device separate, the inner tub may continue to slide in the pulling direction due to inertia, which may cause the inner tub to move too much. The mutual attraction between the first adsorption component and the second adsorption component can control the running speed of the inner tub, thereby keeping the inner tub of the dishwasher within the set range and avoiding excessive movement of the inner tub.

[0021] 3. During the process of pushing the inner liner into the cabinet, due to the action of external force, the inner liner moves rapidly into the cabinet, which may cause violent collision or friction between the inner liner and the cabinet, generating noise. In severe cases, it may damage the dishwasher. The first and second adsorption components repel each other to control the running speed of the inner liner being fully pushed into the cabinet, thus avoiding violent collision or friction between the inner liner and the cabinet.

[0022] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0024] Figure 1 This is a schematic diagram of the structure of a drawer-type dishwasher according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the inner liner assembly of a drawer-type dishwasher according to an embodiment of the present invention;

[0026] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0027] Figure 4 This is a schematic diagram of the inner liner assembly of another drawer-type dishwasher in an embodiment of the present invention;

[0028] Figure 5 yes Figure 4 A magnified view of a section at point B in the middle;

[0029] Figure 6 This is a schematic diagram of the structure of the base plate of a drawer-type dishwasher according to an embodiment of the present invention;

[0030] Figure 7 This is an exploded view of the base plate of a drawer-type dishwasher according to an embodiment of the present invention.

[0031] In the diagram: 1. Box body; 2. Door body; 3. Inner liner; 31. Screw; 4. Base plate; 41. Flanged edge; 42. Opening; 5. Support component; 51. Connecting part; 52. Fixing part; 521. Mounting hole; 6. Second adsorption assembly; 7. First adsorption assembly; 8. Drive device; 9. Distance measuring element.

[0032] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Example 1

[0037] like Figures 1 to 7As shown, this embodiment provides a drawer-type dishwasher, including a cabinet 1, a pull-out inner liner 3 disposed within the cabinet 1, and a door 2 disposed on the front side panel of the inner liner 3. A support member 5 is disposed at the bottom of the inner liner 3, and the support member 5 is positioned on the front side of the bottom plate 4 of the cabinet 1. A first suction component 7 is disposed on the support member 5, and a second suction component 6 is disposed at a corresponding position on the bottom plate 4. By disposing of the first suction component 7 and the second suction component 6 on the support member 5 and the bottom plate 4 of the drawer-type dishwasher, respectively, during the opening of the dishwasher door 2, the first suction component 7 and the second suction component 6 attract each other to control the movement of the door 2, preventing excessive movement of the door 2 and the inner liner 3; during the closing of the door 2, the first suction component 7 and the second suction component 6 repel each other to control the movement speed of the door 2 and the inner liner 3, avoiding collisions between the door 2 and the inner liner 3 and the cabinet 1 that could cause vibration or noise, or even damage to the dishwasher or the tableware inside the dishwasher.

[0038] In this embodiment, the first adsorption component 7 and / or the second adsorption component 6 are magnetic elements that change the magnetic poles by controlling the direction of the current, and the first adsorption component 7 and the second adsorption component 6 attract or repel each other.

[0039] Preferably, the first adsorption component 7 is a permanent magnet, and the second adsorption component 6 is an electromagnet. When the second adsorption component 6 is energized with a positive current, the first and second adsorption components 7 attract each other, controlling the movement of the door 2 and the inner tub 3, particularly in dishwashers where the door 2 is opened via an automatic door opening device. When the second adsorption component 6 is energized with a reverse current, the first and second adsorption components 7 repel each other, controlling the movement speed of the door 2 and the inner tub 3 to not exceed a set value when the door 2 is closed by external force. If the second adsorption component 6 is not energized, the magnetic attraction between the first and second adsorption components disappears. Through this configuration, the opening and closing of the dishwasher door 2 is intelligently controlled, thereby enabling the safe pulling out or pushing in of the dishwasher inner tub 3. The structure of the adsorption components is simpler, assembly is more convenient, effectively reducing product production costs and improving user experience.

[0040] like Figure 3 and Figure 5 As shown, in this embodiment, the front end of the base plate 4 is provided with an upwardly bent flange 41, and the second adsorption component 6 is disposed on the flange 41; the support member 5 includes a vertically downward extending connecting part 51, which is located on the front side of the flange 41, and the first adsorption component 7 is disposed on the connecting part 51. The connecting part 51 and the flange 41 are arranged one in front of the other, and the first adsorption component 7 and the second adsorption component 6 are correspondingly disposed on the connecting part 51 and the flange 41, thereby ensuring that the direction of the magnetic attraction or repulsion between the first adsorption component 7 and the second adsorption component 6 is on the same horizontal line as the running direction of the inner liner 3 being pulled out or pushed into the box body 1.

[0041] like Figure 6 and Figure 7 As shown, in this embodiment, the first adsorption component 7 and the second adsorption component 6 are arranged correspondingly front and back along the pushing and pulling direction of the inner liner 3. The first adsorption component 7 and the second adsorption component 6 are at the same height so that during the process of the inner liner 3 being pulled out or pushed into the cabinet 1, the magnetic attraction or magnetic repulsion between the first adsorption component 7 and the second adsorption component 6 reaches its maximum and the direction is opposite to the movement direction of the inner liner 3. This better controls the movement speed of the inner liner 3, so that the inner liner 3 is pulled out of the cabinet 1 and eventually stops within the set range due to the magnetic attraction, or when the inner liner 3 is completely pushed into the cabinet 1, the movement speed of the inner liner 3 is reduced to below the safe speed due to the magnetic repulsion, thereby realizing the safe opening and closing of the dishwasher door 2.

[0042] like Figure 3 and Figure 5 As shown, in this embodiment, the support member 5 also includes a fixing part 52 extending along the push-pull direction of the inner liner 3. The connecting part 51 and the fixing part 52 are connected in an inverted L-shape with a bend transition. The fixing part 52 is provided with a mounting hole 521. The fixing part 52 is fixed to the bottom of the inner liner 3 by corresponding screws 31. The fixing part 52 is tightly fitted to the bottom of the inner liner 3 so that the support member 5 is fixedly connected to the inner liner 3, driving the door 2 and the inner liner 3 to move synchronously. In addition, the fixing part 52 extends along the push-pull direction of the inner liner 3 to provide better support, so as to ensure that the door 2 and the inner liner 3 move smoothly.

[0043] like Figure 3 and Figure 5 As shown, in this embodiment, the first adsorption component 7 is disposed on the side of the connecting part 51 facing the flange 41, and the second adsorption component 6 is disposed on the side of the flange 41 facing away from the connecting part 51. Through this arrangement, the first adsorption component 7 and the second adsorption component 6 attract or repel each other, thus generating magnetic attraction or repulsion. By controlling the positions of the first adsorption component 7 and the second adsorption component 6, the magnetic attraction or repulsion is made less than the force exerted on the inner liner 3 when it is pulled out or pushed into the cabinet 1. This allows for more intelligent control of the inner liner 3 being pulled out of the cabinet 1. Due to the magnetic attraction, the inner liner 3 remains within a set range, ensuring the consistency of the dishwasher's door opening stroke each time. Alternatively, when the inner liner 3 is fully pushed into the cabinet 1, the movement speed is reduced to below a safe speed due to the magnetic repulsion, preventing violent collisions between the door 2, the inner liner 3, and the cabinet 1.

[0044] Preferably, the first adsorption component 7 and the flange 41 of the base plate 4 are arranged one in front of the other, and there is a gap between the first adsorption component 7 and the flange 41. When the door 2 is closed, the first adsorption component 7 and the flange 41 do not contact each other, so that the first adsorption component 7 and the flange 41 will not collide during the process of the inner tub 3 of the dishwasher moving quickly into the cabinet 1 of the dishwasher under the action of external force until the door 2 is closed, thereby improving the safety of the dishwasher.

[0045] More preferably, the connecting part 51 is provided with a groove with an opening facing the flange 41 of the bottom plate 4. The first adsorption component 7 is located in the groove. The first adsorption component 7 is glued or mechanically fixed, which not only prevents the first adsorption component 7 from moving, but also avoids collision with the bottom plate 4 of the dishwasher when the door 2 is closed, thus extending the service life of the first adsorption component 7.

[0046] like Figures 2 to 5 As shown, in this embodiment, the base plate 4 is also equipped with a retractable drive device 8. The drive device 8 can drive the support member 5 to move in the direction in which the inner liner 3 is pulled out from the box 1. The front end of the base plate 4 is provided with an upwardly bent flange 41, and the flange 41 is provided with an opening 42. The retractable end of the drive device 8 passes through the opening 42 and abuts against the support member 5. By providing an opening 42 in the flange 41, the retractable end of the drive device 8 passes through the opening 42 and engages with the flange 41. The drive device 8 can drive the support member 5 to move in the direction in which the inner liner 3 is pulled out from the box 1, thereby realizing the synchronous movement of the door 2 and the inner liner 3.

[0047] like Figure 4 and Figure 5 As shown in this embodiment, after the extendable end of the drive device 8 drives the support member 5 to move forward a certain distance, the support member 5 and the drive device 8 separate. Under the action of inertia, the door body 2 and the inner liner 3 continue to move forward under the drive of the support member 5 until the door body 2, the inner liner 3 and the support member 5 move as a whole and the speed decreases to zero and they stop at the corresponding positions.

[0048] like Figure 3 and Figure 7 In this embodiment, the support member 5 or the base plate 4 is provided with a distance measuring element 9 for measuring the relative distance between the first adsorption component 7 and the second adsorption component 6, thereby controlling the movement stroke of the door body 2 within a set range and avoiding excessive movement stroke of the door body 2, which could cause damage to the dishwasher and the tableware inside the dishwasher.

[0049] In this example, the ranging element 9 is a displacement sensor or radar. Radar has the advantages of simple structure, convenient installation, high measurement accuracy and low cost.

[0050] In the aforementioned drawer-type dishwasher, a first adsorption component 7 and a second adsorption component 6 are respectively installed on the support 5 and the base plate 4 of the dishwasher. The adsorption components are controlled to attract each other so that the movement of the dishwasher door 2 is within a set range during the automatic opening process, or the adsorption components are controlled to repel each other so that the movement speed of the dishwasher door 2 and the inner tub 3 is within a normal range during the closing process. This reduces the impact force between the inner tub 3 and the cabinet 1, and prevents the dishwasher and the dishes inside the dishwasher from being damaged by vibration.

[0051] Example 2

[0052] This invention provides a control method for a drawer-type dishwasher, applicable to any of the drawer-type dishwashers described above. During the process of the inner liner being pulled out of the cabinet, a positive current flows through the second adsorption component, causing the first and second adsorption components to attract each other; and / or during the process of the inner liner being pushed into the cabinet, a reverse current flows through the second adsorption component, causing the first and second adsorption components to repel each other. Through this control method, particularly for a drawer-type dishwasher with a drive device, during the process of the inner liner being pulled out of the cabinet, the second adsorption component, due to the positive current, becomes magnetic and attracts the first adsorption component, causing the inner liner to be subjected to magnetic attraction, slowing its movement speed until it finally stops within a set range, thus stabilizing the door within a certain travel distance; during the process of the inner liner being pushed into the cabinet, the second adsorption component, due to the positive current, becomes magnetic and repels the first adsorption component, causing the inner liner to be subjected to magnetic repulsion, slowing its movement speed, reducing the impact force generated when the inner liner is fully pushed into the cabinet, and preventing violent collisions between the inner liner and the cabinet; when the second adsorption component is de-energized, the magnetic attraction between the first and second adsorption components disappears.

[0053] In this embodiment, during the process of the inner liner being pulled out of the cabinet, if the relative distance between the first adsorption component and the second adsorption component is greater than S1, the second adsorption component is energized with a positive current. This controls the movement of the inner liner to stop when the relative distance between the first adsorption component and the second adsorption component is within S3 and greater than S1. A distance measuring element is set to measure the movement stroke of the door to determine whether the second adsorption component needs to be energized. In particular, in a drawer-type dishwasher that uses a drive device to achieve automatic door opening, the movement stroke of the inner liner is controlled by the magnetic attraction between the first adsorption component and the second adsorption component, thereby achieving more precise control of the dishwasher's operating program.

[0054] In this embodiment, during the process of pushing the inner liner into the box, if the relative distance between the first adsorption component and the second adsorption component is less than S2, the second adsorption component is energized with a reverse current to reduce the movement speed of the inner liner when it is fully pushed into the box, thereby reducing the impact force between the inner liner and the box. A ranging element is set to measure the relative distance between the first adsorption component and the second adsorption component to determine whether the second adsorption component needs to be energized. The movement speed of the inner liner is controlled by the magnetic repulsion between the first adsorption component and the second adsorption component, thereby achieving more precise control over the state when the door is closed.

[0055] Through the above-described control method for a drawer-type dishwasher, during the process of the inner tub being pulled out of the cabinet, the first and second adsorption components are controlled to attract each other, thereby controlling the movement of the inner tub and preventing excessive movement. During the process of the inner tub being pushed into the cabinet, the first and second adsorption components are controlled to repel each other, thereby reducing the impact force between the inner tub and the cabinet and preventing the inner tub from colliding with the cabinet and causing noise or damage.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A drawer-type dishwasher, comprising a cabinet and an inner liner, wherein the inner liner is slidably and pullably disposed within the cabinet, characterized in that: A support is provided at the bottom of the inner liner. The support is located on the front side of the bottom plate of the box. A first adsorption component is provided on the support, and a second adsorption component is provided at the corresponding position on the bottom plate. The base plate is also equipped with a retractable drive device, which can drive the support to move along the direction in which the inner liner is pulled out of the box; the front end of the base plate is equipped with an upward-bent flange with an opening, and the retractable end of the drive device passes through the opening and abuts against the support. The support also includes a fixing part extending along the push-pull direction of the inner liner. The connecting part and the fixing part are connected in an inverted L-shape. The fixing part is provided with mounting holes. The fixing part is fixed to the bottom of the inner liner by corresponding screws. The fixing part fits tightly with the bottom of the inner liner. The support is fixedly connected to the inner liner, driving the inner liner to move. The first adsorption component is disposed on the side of the connecting part facing the flange; The second adsorption component is disposed on the flange; the second adsorption component is disposed on the side of the flange opposite to the connecting part; the first adsorption component and the second adsorption component attract or repel each other; the first adsorption component is a permanent magnet, and the second adsorption component is an electromagnet; During the process of pulling the inner liner out of the box, the retractable end of the drive device drives the support to move forward a certain distance, and then the support and the drive device separate. If the relative distance between the first adsorption component and the second adsorption component is greater than S1, the second adsorption component is energized with a positive current to attract the first adsorption component and the second adsorption component. During the process of pushing the inner liner into the box, if the relative distance between the first adsorption component and the second adsorption component is less than S2, the second adsorption component is supplied with a reverse current to repel the first adsorption component and the second adsorption component; thus controlling the movement of the door within the set range.

2. A drawer dishwasher according to claim 1, characterized in that: The support includes a vertically downward extending connecting portion located on the front side of the flange.

3. A drawer-type dishwasher according to claim 2, characterized in that: The first and second adsorption components are arranged correspondingly to each other along the push-pull direction of the inner liner, and the first and second adsorption components are at the same height.

4. The drawer dishwasher according to claim 1, characterized in that: The base plate or support is equipped with a distance measuring element for measuring the relative distance between the first adsorption component and the second adsorption component.

5. The drawer dishwasher according to claim 1, characterized in that: There is a gap between the first adsorption component and the flange, so that the first adsorption component and the flange do not contact each other when the door is closed.

6. A drawer dishwasher according to claim 2, characterized in that: The connecting part is provided with a groove with a flange opening facing the base plate, and the first adsorption component is located in the groove.

7. A drawer dishwasher according to claim 6, characterized in that: The first adsorption component is bonded and fixed to the groove.

8. A drawer-type dishwasher according to claim 6, characterized in that: The first adsorption component is mechanically fixed to the groove.

9. A drawer dishwasher according to claim 4, characterized in that: The ranging element is a displacement sensor.

10. The drawer dishwasher according to claim 4, characterized in that: The ranging element is radar.

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