Dishwasher and dishwasher spray waterway system

Abstract

The present invention discloses a dishwasher and a dishwasher spray water system. The dishwasher includes a water cup, a cylindrical filter mesh, a spray arm and a drive member, the cylindrical filter mesh is rotatably provided within the water cup, the spray arm includes a spray arm body and a rotation shaft connected to the spray arm body, the rotation shaft is rotatably connected to the water cup, the cylindrical filter mesh is sleeved outside the rotation shaft and fixed to the rotation shaft, and the drive member is drivingly connected to the rotation shaft to drive the rotation shaft to rotate circumferentially.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This invention claims priority to Chinese Patent Application No. 202311143413.0, No. 202322415684.9, No. 202322414159.5, No. 202322414193.2, No. 202311144218.X, and No. 202311143429.1, filed on September 5, 2023, the entire contents of which are incorporated herein by reference.TECHNICAL FIELD

[0002] The present invention relates to the field of household appliances, and more particularly to a dishwasher and a dishwasher spray water system.BACKGROUND

[0003] With the improvement of people's living standards, dishwashers are being used more and more widely. A dishwasher has a circulating cleaning mode, the water in a water cup is recycled by a wash pump to meet user requirements for energy and water consumption of home appliances. A cylindrical filter mesh is also equipped with a cylindrical filter mesh for filtering food residues to prevent the wash pump from sucking in food residues. However, in existing dishwashers, food residues easily adhere to the mesh of the cylindrical filter mesh, which requires frequent removal of the cylindrical filter mesh for cleaning, greatly affecting the user experience.SUMMARY

[0004] The main purpose of the present invention is to provide a dishwasher designed to drive a cylindrical filter mesh to rotate, thereby enhancing the self-cleaning effect of the cylindrical filter mesh and reducing the frequency of removing the cylindrical filter mesh for cleaning.

[0005] To achieve the above purpose, the dishwasher provided in the present invention includes: a water cup, a spray arm, a cylindrical filter mesh, and a drive member.

[0006] In an embodiment, the spray arm includes a spray arm body and a rotation shaft connected to the spray arm body, and the rotation shaft is rotatably connected to the water cup.

[0007] In an embodiment, the cylindrical filter mesh is provided within the water cup, and the cylindrical filter mesh is sleeved outside the rotation shaft and fixed to the rotation shaft.

[0008] In an embodiment, the drive member is drivingly connected to the rotation shaft to drive the rotation shaft to rotate circumferentially.

[0009] In an embodiment, a first connection sleeve is fixedly provided within the cylindrical filter mesh, and the rotation shaft is passed through and fixedly connected to the first connection sleeve; an outer periphery of the rotation shaft is convexly provided with a limit clamping protrusion.

[0010] In an embodiment, the first connection sleeve is provided correspondingly with a limit clamping notch, and the limit clamping protrusion is engaged with the limit clamping notch.

[0011] In an embodiment, an outer wall of the rotation shaft is in interference fit with an inner wall of the first connection sleeve.

[0012] In an embodiment, the rotation shaft includes a first connection section and a second connection section, an outer circumference of the first connection section is more convex than an outer circumference of the second connection section, an outer wall of the first connection section is in interference fit with an inner wall of the first connection sleeve, and the second connection section is rotatably connected to the water cup.

[0013] In an embodiment, a second connection sleeve is provided protruding upward from a top of the cylindrical filter mesh.

[0014] In an embodiment, a fixed connection portion connected to the spray arm body is provided at each of opposite sides of the rotation shaft, and the fixed connection portion is spaced apart from the rotation shaft.

[0015] In an embodiment, the second connection sleeve is sleeved at the rotation shaft between the fixed connection portion and the rotation shaft.

[0016] In an embodiment, a first limit protrusion portion is protrudingly provided at a side of the fixed connection portion proximal to the rotation shaft, and a second limit protrusion portion is protrudingly provided at an outer side of the second connection sleeve correspondingly.

[0017] In an embodiment, the first limit protrusion portion is position-limited and fitted with a side of the second limit protrusion portion distant from the spray arm body.

[0018] In an embodiment, the dishwasher further includes a first magnetic member and a second magnetic member opposite to the first magnetic member, and the first magnetic member is fixed to the rotation shaft; the second magnetic member and the first magnetic member have opposite magnetic poles, and the second magnetic member is rotatable with respect to the water cup.

[0019] In an embodiment, the drive member is drivably connected to the second magnetic member to drive the second magnetic member to rotate, which in turn drives the rotation shaft to rotate.

[0020] In an embodiment, the first magnetic member is fixedly installed to the cylindrical filter mesh.

[0021] In an embodiment, an installation portion is provided at a bottom of the cylindrical filter mesh, the rotation shaft is configured to pass through the installation portion, and the first magnetic member is fixedly installed to the installation portion.

[0022] In an embodiment, both an inner circumference of the installation portion and an outer circumference of the installation portion are provided with limit ring protrusions protruding toward the spray arm body to form a receive groove between the two limit ring protrusions for receiving and installing the first magnetic member.

[0023] In an embodiment, the dishwasher further includes a rotation wheel rotatably connected to the water cup, and the second magnetic member is provided at the rotation wheel.

[0024] In an embodiment, the drive member is drivingly connected to the rotation wheel to drive the rotation wheel to rotate about an axis of the rotation shaft.

[0025] In an embodiment, the drive member is a motor provided with a drive gear, an outer lateral circumference of the rotation wheel is provided with a transmission tooth groove, and the drive gear engages with the transmission tooth groove.

[0026] In an embodiment, a water inlet connector is provided at a bottom of the water cup, a wash chamber is provided above the water cup, and the rotation shaft is movably inserted at the water inlet connector.

[0027] In an embodiment, the spray arm body is accommodated at the wash chamber and communicating with the water inlet connector through the rotation shaft.

[0028] In an embodiment, the water inlet connector includes a main body and a connection portion, and the main body is connected to the bottom of the water cup through the connection portion.

[0029] In an embodiment, an inner diameter of the connection portion is larger than an inner diameter of the main body.

[0030] In an embodiment, a seal element is fixedly provided within the connection portion, and the rotation shaft is movably provided through the seal element.

[0031] To achieve the above purpose, the present invention further provides a dishwasher, including: a water cup, a cylindrical filter mesh, a first magnetic member, a second magnetic member, and a drive member.

[0032] In an embodiment, the cylindrical filter mesh is rotatably provided within the water cup.

[0033] In an embodiment, the first magnetic member is fixed to the cylindrical filter mesh, and the second magnetic member is provided opposite the first magnetic member.

[0034] In an embodiment, the second magnetic member and the first magnetic member have opposite magnetic poles, and the second magnetic member is rotatable with respect to the water cup.

[0035] In an embodiment, the drive member is drivingly connected to the second magnetic member to rotate the second magnetic member, thereby driving the cylindrical filter mesh to rotate.

[0036] In an embodiment, an installation portion is provided at a bottom of the cylindrical filter mesh, the rotation shaft is configured to pass through the installation portion, and the first magnetic member is fixedly installed to the installation portion.

[0037] In an embodiment, both an inner circumference of the installation portion and an outer circumference of the installation portion are provided with limit ring protrusions protruding toward the spray arm body to form a receive groove between the two limit ring protrusions for receiving and installing the first magnetic member.

[0038] In an embodiment, the dishwasher further includes a spray arm, the spray arm includes a spray arm body and a rotation shaft connected to the spray arm body.

[0039] In an embodiment, the rotation shaft is coaxially provided with the cylindrical filter mesh, and at least one of the rotation shaft and the spray arm body is fixedly connected to the cylindrical filter mesh.

[0040] In an embodiment, the drive member is configured to drive the cylindrical filter mesh to rotate circumferentially.

[0041] In an embodiment, a water inlet connector is provided at a bottom of the water cup, a wash chamber is provided above the water cup.

[0042] In an embodiment, the rotation shaft passes through the cylindrical filter mesh, and the rotation shaft is movably inserted at the water inlet connector.

[0043] In an embodiment, the spray arm body is accommodated at the wash chamber and communicating with the water inlet connector through the rotation shaft.

[0044] In an embodiment, a first connection sleeve is fixedly provided within the cylindrical filter mesh, and the rotation shaft is passed through and fixedly connected to the first connection sleeve; an outer wall of the rotation shaft is in interference fit with an inner wall of the first connection sleeve.

[0045] In an embodiment, an outside of the rotation shaft is convexly provided with a limit clamping protrusion, the first connection sleeve is correspondingly provided with a limit clamping notch, and the limit clamping protrusion is engaged with the limit clamping notch.

[0046] In an embodiment, a second connection sleeve is provided protruding upward from a top of the cylindrical filter mesh.

[0047] In an embodiment, a fixed connection portion connected to the spray arm body is provided at each of opposite sides of the rotation shaft.

[0048] In an embodiment, the fixed connection portion is spaced apart from the rotation shaft, and the second connection sleeve is sleeved at the rotation shaft between the fixed connection portion and the rotation shaft.

[0049] In an embodiment, a first limit protrusion portion is protrudingly provided at a side of the fixed connection portion proximal to the rotation shaft, and a second limit protrusion portion is protrudingly provided at an outer side of the second connection sleeve correspondingly.

[0050] In an embodiment, the first limit protrusion portion is position-limited and fitted with a side of the second limit protrusion portion distant from the spray arm body.

[0051] In an embodiment, the second connection sleeve is fixedly connected to the cylindrical filter mesh by buckle snap-fitting, plugging, or snapping.

[0052] In an embodiment, an outer circumference of the second connection sleeve at one end proximal to the cylindrical filter mesh extends outwardly to form an installation ring.

[0053] In an embodiment, a connection buckle is protruded from an outer periphery of the installation ring, and the cylindrical filter mesh is correspondingly provided with a connection clamping notch, the connection buckle being buckled into the connection clamping notch.

[0054] In an embodiment, the dishwasher further includes a rotation wheel movably sleeved at the water inlet connector, and the second magnetic member is provided at the rotation wheel.

[0055] In an embodiment, the drive member is drivingly connected to the rotation wheel to drive the rotation wheel to rotate about an axis of the cylindrical filter mesh.

[0056] In an embodiment, the drive member is a motor provided with a drive gear.

[0057] In an embodiment, an outer lateral circumference of the rotation wheel is provided with a transmission tooth groove, and the drive gear engages with the transmission tooth groove.

[0058] In an embodiment, the water inlet connector includes a main body and a connection portion, the main body is connected to the bottom of the water cup through the connection portion, an inner diameter of the connection portion is larger than an inner diameter of the main body.

[0059] In an embodiment, a seal element is housed and installed in the connection portion, an outer ring of the seal is in interference fit with the connection portion, and the rotation shaft is movably provided through the seal element.

[0060] In an embodiment, the connection portion is more convex than the main body, and the rotation wheel is sleeved at an outside of the connection portion.

[0061] To achieve the above purpose, the present invention further provides a dishwasher spray water system, applicable to the above-mentioned dishwasher. The spray water system includes: an inner pot, a water cup, a lift cup filter mesh assembly, and a lower spray arm.

[0062] In an embodiment, the inner pot is provided with a wash chamber, and the lift cup filter mesh assembly is rotatably installed within the water cup.

[0063] In an embodiment, the lower spray arm includes a spray arm body and a water delivery pipe. The spray arm body is provided within the wash chamber. One end of the water delivery pipe is connected to and communicates with the spray arm body, while the other end of the water delivery pipe passes through the lift cup filter mesh assembly and is rigidly connected to the lift cup filter mesh assembly.

[0064] In an embodiment, the water delivery pipe is connected to a water supply pipeline to supply water to the lower spray arm.

[0065] In an embodiment, the lift cup filter mesh assembly is centrally provided within the water cup, and the water delivery pipe centrally passes through the lift cup filter mesh assembly.

[0066] In an embodiment, a connection pipe is provided at the bottom of the water cup. The connection pipe is provided with a first port for communicating with the water cup and a second port for communicating with the water supply pipeline.

[0067] In an embodiment, an end of the water delivery pipe distal from the spray arm body communicates with the connection pipe through the first port.

[0068] In an embodiment, a seal element is provided at the first port, the seal element is used to seal the mating portions of the water cup, the water delivery pipe and the connection pipe.

[0069] In an embodiment, the dishwasher spray water system further includes a drive mechanism configured to rotate one of the lower spray arm and the lift cup filter mesh assembly, thereby driving the other to rotate.

[0070] In an embodiment, the drive mechanism includes a drive motor, a transmission member, a first magnetic member, and a second magnetic member. The drive motor is drivingly connected to the transmission member to drive the transmission member to rotate.

[0071] In an embodiment, the transmission member is provided outside the water cup, the first magnetic member is provided at the transmission member, and the second magnetic member is provided at the lift cup filter mesh assembly.

[0072] In an embodiment, the first magnetic member and the second magnetic member have opposite magnetic poles at the opposite portions.

[0073] In an embodiment, the transmission member is rotatably sleeved around the outer periphery of the connection pipe, and the transmission member is spaced from and opposite to the bottom of the water cup.

[0074] In an embodiment, the first magnetic member is provided at the top of the transmission member, and the second magnetic member is provided at the bottom of the lift cup filter mesh assembly.

[0075] In an embodiment, the transmission member is a transmission gear, and the output end of the drive motor is provided with a drive gear that meshes with the transmission gear.

[0076] In an embodiment, the water cup is provided with a water inlet and a water outlet.

[0077] In an embodiment, the water supply pipeline includes a wash pump, a water diverter valve, and a first water distribution pipe. The water diverter valve is provided with a water inlet and a first water diversion port.

[0078] In an embodiment, the water inlet end of the wash pump communicates with the water outlet through a first water pipe, and the water outlet end of the wash pump communicates with the water inlet through a second water pipe.

[0079] In an embodiment, the first water distribution pipe communicates the first water diversion port with the water delivery pipe.

[0080] In an embodiment, the dishwasher spray water system further includes a middle spray arm and an upper spray arm. The upper spray arm, the middle spray arm, and the lower spray arms are sequentially provided in the wash chamber from top to bottom.

[0081] In an embodiment, the water diverter valve further includes a second water diversion port and a third water diversion port. The second water diversion port communicates with the middle spray arm through a second water distribution pipe, and the third water diversion port communicates with the upper spray arm through a third water distribution pipe.

[0082] In an embodiment, a branch is provided within the valve chamber of the water diverter valve, the branch communicates the water inlet with the first water diversion port.

[0083] In an embodiment, a switching mechanism is provided within the valve chamber of the water diverter valve. The switching mechanism is used to switch the water path state of the water diverter valve, so that the water diverter valve can selectively supply water to at least one of the lower spray arm, the middle spray arm, and the upper spray arm.

[0084] In the technical solution of the present invention, the second magnetic member and the first magnetic member have opposite magnetic poles, and there is a magnetic attraction between the first magnetic member and the second magnetic member, which drives the drive member to operate and drives the second magnetic member to rotate around the axis of the rotation shaft. That is, the first magnetic member can be driven to rotate around the axis of the rotation shaft by the magnetic attraction between the first magnetic member and the second magnetic member. Since the first magnetic member is fixedly connected to the rotation shaft, the rotation shaft will be driven by the first magnetic member to rotate synchronously. The rotation shaft rotates around its axis, and the spray arm as a whole rotates in the corresponding circumferential direction. In the present invention, the operation of the drive member can be controlled to control the rotation speed of the second magnetic member, thereby controlling the rotation speed of the spray arm. The user can conveniently and accurately adjust the rotation speed of the spray arm. In addition, the technical solution of the present invention is to drive the spray arm to rotate in a non-contact manner of magnetic drive. When the rotation shaft is blocked, the drive member can continue to drive the second magnetic member to rotate without being affected by the rotation shaft, which could cause the drive member to get stuck or even cause a malfunction.BRIEF DESCRIPTION OF THE DRAWINGS

[0085] In order to explain the embodiments of the present invention or the technical solutions in the existing technology more clearly, the accompanying drawings needed to be used in the description of the embodiments or the existing technology will be briefly introduced below. Obviously, other accompanying drawings can be obtained based on the provided accompanying drawings without exerting creative efforts for those skilled in the art. FIG. 1 is a structural schematic view of an embodiment of a dishwasher according to the present invention. FIG. 2 is an enlarged partial view of point A in FIG. 1. FIG. 3 is an enlarged partial view of point B in FIG. 1. FIG. 4 is an enlarged partial view of point C in FIG. 1. FIG. 5 is an enlarged partial view of point D in FIG. 1. FIG. 6 is an enlarged partial view of point E in FIG. 1. FIG. 7 is a structural schematic view of an embodiment of a dishwasher spray water system of the present invention. FIG. 8 is a schematic view of the dishwasher spray water system in FIG. 7 in operation. FIG. 9 is a structural schematic view of another embodiment of a dishwasher spray water system of the present invention.

[0086] Explanation of reference numbers: numbernamenumbername100water cup500cylindrical filter mesh110water inlet connector510inner skeleton111main body511installation portion112connection portion512limit ring protrusion200spray arm513receive groove210spray arm body520outer skeleton220rotation shaft521connection clamping notch221first connection section530first connection sleeve222second connection section531limit clamping notch223limit clamping protrusion540second connection sleeve230fixed connection portion541second limit protrusion portion231first limit protrusion portion550installation ring300first magnetic member551connection buckle400second magnetic member600rotation wheel700seal element53first water distribution pipe10inner pot54first water pipe101wash chamber55second water pipe21assembly surface56second water distribution pipe22water inlet57third water distribution pipe23connection pipe61drive motor30lift cup filter mesh assembly62transmission member40lower spray arm63magnetic couple assembly42water delivery pipe70middle spray arm51wash pump80upper spray arm52water diverter valve90drain pump

[0087] The realization of the purpose, functional features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0088] The technical solutions in the embodiments according to the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments according to the present invention, and it is clear that the described embodiments are only a part of the embodiments according to the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without making creative labor fall within the scope of the present invention.

[0089] It should be noted that if there are directional instructions (such as up, down, left, right, front, back or the like) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship, movement and so on between various components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0090] The terms "connect", "install" and "fix" should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

[0091] Furthermore, in the present invention, if there are descriptions involving "first", "second" or the like, the descriptions of "first", "second" or the like are only for descriptive purposes and cannot be understood as indicating or implying the relative importance or implicitly indicating the quantity of the technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the meaning of "and / or" appearing in the entire text includes three parallel solutions, taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions of various embodiments can be combined with each other, but it is based on that those skilled in the art can realize. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by the present invention.

[0092] The present invention provides a dishwasher.

[0093] In an embodiment of the present invention, as shown in FIG. 1, the dishwasher includes a water cup 100, a cylindrical filter mesh 500, a spray arm 200, and a drive member (not shown in the figures). The cylindrical filter mesh 500 is rotatably provided within the water cup. The spray arm 200 includes a spray arm body 210 and a rotation shaft 220 connected to the spray arm body 210. The rotation shaft 220 is rotatably connected to the water cup 100. The cylindrical filter mesh 500 is sleeved outside the rotation shaft 220 and fixed to the rotation shaft 220. The drive member is drivingly connected to the rotation shaft 220 to drive the rotation shaft 220 to rotate circumferentially.

[0094] In an embodiment, the rotation shaft 220 drives the spray arm body 210 to rotate, and this rotation includes synchronous rotation and asynchronous rotation. Synchronous rotation means that the rotation shaft 220 and the spray arm body 210 rotate at the same frequency. Asynchronous rotation means that the rotation shaft 220 and the spray arm body 210 can drive the spray arm body 210 to rotate through a transmission method such as a speed change gear, and the two rotation frequencies are different.

[0095] In some embodiments, the cylindrical filter mesh 500 is not fixedly connected to the rotation shaft 220. The cylindrical filter mesh 500 is driven to rotate by the rotation shaft 220, and the rotation frequency of the cylindrical filter mesh 500 may be the same as or different from the rotation frequency of the rotation shaft 220.

[0096] In the technical solution of the present invention, driven by a drive member, the cylindrical filter mesh 500 rotates synchronously with the rotation shaft 220, allowing the cylindrical filter mesh 500 to rotate within the water cup 100, which increases the interaction between the cylindrical filter mesh 500 and the water flow, thereby enhancing the flushing effect of the water flow on the cylindrical filter mesh 500 and, in turn, improving the self-cleaning effect of the cylindrical filter mesh 500 within the water cup 100. Therefore, users do not need to frequently remove the cylindrical filter mesh 500 for cleaning, which is conducive to improving the user experience.

[0097] In an embodiment, referring to both FIG. 1 and FIG. 3, a first connection sleeve 530 is fixedly provided within the cylindrical filter mesh 500, and the rotation shaft 220 is passed through and fixedly connected to the first connection sleeve 530. In this way, the rotation shaft 220 is fixedly connected to the cylindrical filter mesh 500 and can rotate under the drive of the cylindrical filter mesh 500. Moreover, the connection stability between the rotation shaft 220 and the cylindrical filter mesh 500 is strong, which helps to ensure the smooth rotation of the rotation shaft 220. Certainly, in other embodiments, the rotation shaft 220 can also be fixedly connected to the installation portion 511. The rotation shaft 220 and the installation portion 511 can be bonded with a water-insoluble adhesive, or can be fixedly connected by snap-fitting or screw locking.

[0098] Without loss of generality, in this embodiment, the cylindrical filter mesh 500 is provided with an inner skeleton 510 and an outer skeleton 520 connected to each other, and the side portions of the inner skeleton 510 and outer skeleton 520 are annular structures and are both provided with filter meshes, the mesh number of the filter mesh provided at the inner skeleton 510 can be smaller than the mesh number of the filter mesh provided at the outer skeleton 520, and preliminary filtration is performed by the filter mesh provided at the inner skeleton 510, and then final filtration is performed by the filter mesh provided at the outer skeleton 520. In this way, it can ensure that food residues can be effectively filtered, and can also prevent food residues from clogging the mesh of the filter mesh, thereby affecting the flow of water between the inside and outside of the cylindrical filter mesh 500. The inner skeleton 510 and the outer skeleton 520 can be fixedly connected. When the inner skeleton 510 rotates, the outer skeleton 520 will also be driven, that is, the cylindrical filter mesh 500 as a whole can rotate. As a result, the water flow flushing effect on the filter of the outer skeleton 520 can also be improved, which is beneficial to improving the self-cleaning effect of the filter mesh of the outer skeleton 520; the inner skeleton 510 and the outer skeleton 520 can also be movably connected. It can be understood that most of the food residue is filtered by the filter mesh of the inner skeleton 510 and concentrated on the inner side of the inner skeleton 510. There is less food residue attached to the filter mesh of the outer skeleton 520. Therefore, even if the outer skeleton 520 does not rotate with the filter of the inner skeleton 510, the accumulation of food residue at the filter mesh is relatively small, and it does not need to be frequently removed for cleaning. In addition, in this case, it is only necessary to drive the inner skeleton 510 of the cylindrical filter mesh 500 to rotate, which can reduce the requirement on the magnetic attraction force between the second magnetic member 400 and the first magnetic member 300.

[0099] The first connection sleeve 530 is provided between the inner skeleton 510 and secured to the inner skeleton 510. Specifically, the ends of the first connection sleeve 530 are respectively connected to the top portion of the inner skeleton 510 and bottom portion of the inner skeleton 510. At the bottom portion of the inner skeleton 510, the connection sleeve is connected to the limit ring protrusion 512 of the inner ring of the installation portion 511. In an embodiment, as for the fixing method of the first sleeve and the inner skeleton 510, the first connection sleeve 530 and the inner skeleton 510 can be integrally formed, or the two ends of the first connection sleeve 530 are respectively abutted against the top portion of the inner skeleton 510 and the bottom portion of the inner skeleton 510. Alternatively, depending on the materials of the first connection sleeve 530 and the inner skeleton 510, selecting the method of melting connection or welding connection to fix the two ends of the first connection sleeve 530 to the top portion of the inner skeleton 510 and bottom portion of the inner skeleton 510. The top portion of the inner skeleton 510 is provided with a relief hole corresponding to the first connection sleeve 530 to avoid the rotation shaft 220 and allow it to pass through.

[0100] In an embodiment, as shown in FIG. 3, an outer periphery of the rotation shaft 220 is convexly provided with a limit clamping protrusion 223, and the first connection sleeve 530 is correspondingly provided with a limit clamping notch 531. The limit clamping protrusion 223 is engaged with the limit clamping notch 531. In this way, the rotation shaft 220 is fixedly connected to the first connection sleeve 530. A plurality of limit clamping protrusions 223 can be provided at intervals at the outer circumference of the rotation shaft 220, and a plurality of limit clamping notches 531 can be provided at intervals at the circumference of the first connection sleeve 530 correspondingly. The plurality of limit clamping protrusions 223 are engaged with the plurality of limit clamping notches 531 in a one-to-one correspondence. Such fixation is conducive to improving the connection stability between the rotation shaft 220 and the first connection sleeve 530. In addition, in order to ensure the structural stability of the first connection sleeve 530, the number of limit clamping notches 531 should not be too many. The number of limit clamping notches 531 and the limit clamping protrusion 223 should be set to two to three respectively. Furthermore, a limit clamping notch 531 can be positioned at the end where the first sleeve connects to the top portion of the inner skeleton 510 to facilitate alignment between the limit clamping protrusion 223 and the limit clamping notch 531.

[0101] In an embodiment, an outer wall of the rotation shaft 220 is in interference fit with an inner wall of the first connection sleeve 530. In this way, the first connection sleeve 530 and the rotation shaft 220 will not rotate with respect to each other, which can further improve the connection stability between the rotation shaft 220 and the first connection sleeve 530, ensuring that the rotation shaft 220 can be driven and rotate synchronously with the inner skeleton 510 of the cylindrical filter mesh 500, and thereby ensuring the accuracy of the user's adjustment of the speed of the spray arm 200.

[0102] Referring to FIG. 1 and FIG. 6, in an embodiment, the rotation shaft 220 includes a first connection section 221 and a second connection section 222, an outer circumference of the first connection section 221 is more convex than an outer circumference of the second connection section 222, an outer wall of the first connection section 221 is in interference fit with an inner wall of the first connection sleeve 530, and the second connection section 222 is movably inserted into the water inlet connector 110. In this embodiment, the rotation shaft 220 is in interference fit with the first connection sleeve 530 through a first connection section 221 having a larger outer diameter, and is movably inserted into the water inlet connector 110 through a second connection section 222 having a smaller outer diameter, thereby simultaneously ensuring a fixed connection between the rotation shaft 220 and the first connection sleeve 530 and a movable connection between the rotation shaft 220 and the water cup 100. Certainly, in other embodiments, alternatively, the position of the rotation shaft 220 for mating with the first connection sleeve 530 and the position for mating with the water inlet connector 110 may be set to the same outer diameter, and the inner diameters of the first connection sleeve 530 and the water inlet connector 110 may be adaptively adjusted based on the outer diameter of the rotation shaft 220.

[0103] Referring to FIG. 1 and FIG. 4, in an embodiment, a second connection sleeve 540 is provided protruding upward from a top of the cylindrical filter mesh 500, a fixed connection portion 230 connected to the spray arm body 210 is provided at each of opposite sides of the rotation shaft 220, the fixed connection portion 230 is spaced apart from the rotation shaft 220, and the second connection sleeve 540 is sleeved at the rotation shaft 220 between the fixed connection portion 230 and the rotation shaft 220. Specifically, the fixed connection portion 230 is provided at the side where the spray arm body 210 is connected to the rotation shaft 220 and is protruded from the spray arm body 210 toward the direction proximal to the cylindrical filter mesh 500. In this way, a space for the second connection sleeve 540 to be inserted is formed between the rotation shaft 220 and the fixed connection portion 230. After the second connection sleeve 540 is inserted therein, the connection stability between the cylindrical filter mesh 500 and the spray arm 200 can be improved. Certainly, in other embodiments, the spray arm body 210 may be protruding with three or more fixed connection portions 230 spaced apart from the rotation shaft 220, with the plurality of the fixed connection portions 230 spaced apart circumferentially around the rotation shaft 220. Alternatively, the spray arm body 210 may be provided with a third connection sleeve circumferentially surrounding the rotation shaft 220. In this way, a space for the second connection sleeve 540 to be inserted may be formed between the third connection sleeve and the rotation shaft 220.

[0104] In an embodiment, as shown in FIG. 4, a first limit protrusion portion 231 is protrudingly provided at a side of the fixed connection portion 230 proximal to the rotation shaft 220, and a second limit protrusion portion 541 is protrudingly provided at an outer side of the second connection sleeve 540 correspondingly, and the first limit protrusion portion 231 is position-limited and fitted with a side of the second limit protrusion portion 541 distant from the spray arm body 210. By limiting the second limit protrusion portion 541 by the first limit protrusion portion 231, the second connection sleeve 540 cannot escape from between the fixed connection portion 230 and the rotation shaft 220, but can be stably inserted therein, which is beneficial to improving the connection stability between the spray arm 200 and the cylindrical filter mesh 500. In addition, when the second connection sleeve 540 is inserted between the fixed connection portion 230 and the rotation shaft 220, the second limit protrusion portion 541 of the second connection sleeve 540 pushes the first limit protrusion portion 231 of the fixed connection portion 230, so that the fixed connection portion 230 can be appropriately deformed, and the fixed connection portion 230 expands outward in a direction distant from the rotation shaft 220, so that the second connection sleeve 540 can be smoothly inserted. The same operation applies to pulling out the second connection sleeve 540. Specifically, one end of the fixed connection portion 230 distant from the spray arm body 210 is bent toward the rotation shaft 220 to form a first limit protrusion portion 231, and a guide surfaces are formed at opposite sides of the first limit protrusion portion 231 proximal to or distant from the spray arm body 210 to facilitate smooth insertion and removal of the second connection sleeve 540. The second connecting sleeve 540 may also be correspondingly provided with a third limit ring protrusion 512 at both sides thereof, or may be provided with only one annular third limit ring protrusion 512, both of which may cooperate with the second limit ring protrusion 512.

[0105] In an embodiment, the second connection sleeve 540 is fixedly connected to the cylindrical filter mesh 500 by buckle snap-fitting, plugging, or snapping. In this way, the second connection sleeve 540 can be stably fixedly connected to the cylindrical filter mesh 500. The second connection sleeve 540 can be fixedly connected to the inner skeleton 510 of the cylindrical filter mesh 500 or the outer skeleton 520 of the cylindrical filter mesh 500. Without loss of generality, in this embodiment, the second connection sleeve 540 is fixedly connected to the outer skeleton 520 of the cylindrical filter mesh 500. The cooperation between the second connection sleeve 540 and the fixed connection portion 230 does not restrict the rotation with respect to the rotation shaft 220, and can facilitate the movable connection between the outer skeleton 520 and the inner skeleton 510 of the cylindrical filter mesh 500. Certainly, in other embodiments, the second connection sleeve 540 and the outer skeleton 520 of the cylindrical filter mesh 500 may be integrally formed.

[0106] Referring to FIG. 1 and FIG. 5, in an embodiment, an outer circumference of the second connection sleeve 540 at one end proximal to the cylindrical filter mesh 500 extends outwardly to form an installation ring 550. A connection buckle 551 is protruded from an outer periphery of the installation ring 550, and the cylindrical filter mesh 500 is correspondingly provided with a connection clamping notch 521. The connection buckle 551 is buckled into the connection clamping notch 521. Specifically, the side of the outer skeleton 520 of the cylindrical filter mesh 500 proximal to the spray arm body 210 is an open structure, the connection clamping notch 521 is provided at the peripheral side of the outer skeleton 520, and the installation ring 550 covers the opening of the outer skeleton 520 and is buckled to the connection clamping notch 521 of the outer skeleton 520 by the connection buckle 551 provided to fix the outer skeleton 520 and the installation ring 550, that is, the second connection sleeve 540 is fixed to the outer skeleton 520 of the cylindrical filter mesh 500..

[0107] In an embodiment, the dishwasher further includes a first magnetic member 300 and a second magnetic member 400 opposite to the first magnetic member 300, and the first magnetic member300 is fixed to the rotation shaft 220; the second magnetic member 400 and the first magnetic member 300 have opposite magnetic poles, and the second magnetic member 400 is rotatable with respect to the water cup 100, and the drive member is drivably connected to the second magnetic member 400 to drive the second magnetic member 400 to rotate, which in turn drives the rotation shaft 220 to rotate. In this way, the drive member can drive the cylindrical filter mesh 500 to rotate in a non-contact manner of magnetic drive. If the cylindrical filter mesh 500 becomes stuck, the drive member can continue to drive the second magnetic member 400 to rotate without being affected by the cylindrical filter mesh 500, which could cause the drive member to become stuck or even malfunction. Certainly, in other embodiments, the drive member can be configured as a motor, with the motor's output shaft coaxially fixed to the rotation shaft or connected to the rotation shaft through a gear transmission.

[0108] In an embodiment, the first magnetic member 300 is fixedly installed to the cylindrical filter mesh 500. The first magnetic member 300 and the rotation shaft 220 are fixedly connected to the cylindrical filter mesh 500 respectively, such that the first magnetic member 300 is indirectly fixedly connected to the rotation shaft 220. In this way, when the first magnetic member 300 is driven by the second magnetic member 400 to rotate about the axis of the rotation shaft 220, that is, the cylindrical filter mesh 500 is driven to rotate about the axis of the rotation shaft 220, thereby driving the rotation shaft 220 to rotate about its axis. The cylindrical filter mesh 500 provides a relatively large installation space for both the first magnetic member 300 and the rotation shaft 220, facilitating the assembly of the first magnetic member 300 and the rotation shaft 220 and ensuring the connection stability between the first magnetic member 300 and the rotation shaft 220. Certainly, in other embodiments, the first magnetic member 300 may be fixedly installed and sleeved at the outside of the rotation shaft 220, or the outer circumference wall of the rotation shaft 220 is embedded with a first magnetic member 300 so that the first magnetic member 300 is directly fixedly connected to the rotation shaft 220.

[0109] In an embodiment, an installation portion 511 is provided at a bottom of the cylindrical filter mesh 500, the rotation shaft 220 is configured to pass through the installation portion 511, and the first magnetic member 300 is fixedly installed to the installation portion 511. Thus, the cylindrical filter mesh 500 is provided around the rotation shaft 220, the installation portion is sleeved at the outer circumference of the rotation shaft 220, and the first magnetic member 300 is installed at the installation portion 511, which allows the first magnetic member 300 to be closer to the rotation shaft 220, thereby facilitating the transmission of motion from the cylindrical filter mesh 500 to the rotation shaft 220. Without loss of generality, the cylindrical filter mesh 500 and the rotation shaft 220 are coaxially provided so that the cylindrical filter mesh 500 and the rotation shaft 220 can both rotate about their respective axes, thereby improving the rotational stability of the cylindrical filter mesh 500 and the rotation shaft 220. Specifically, the installation portion 511 is provided at the bottom portion of the inner skeleton 510 as a part of the inner skeleton 510. It can be understood that food residues will remain at both the inner sides of the inner skeleton 510 and outer side of the inner skeleton 510, and most of the food residues are concentrated at the inner side of the inner skeleton 510. The filter mesh of the inner skeleton 510 is more easily attached by food residues. Therefore, when the first magnetic member 300 is driven to rotate, the installation portion 511 can also drive the inner skeleton 510 to rotate as a whole, which enhances the flushing effect of the water flow on the food residues attached to the filter mesh of the inner skeleton 510, thereby enhancing the self-cleaning effect of the filter mesh of the inner skeleton 510. Certainly, in other embodiments, the rotation shaft 220 can be fixedly connected to a side portion of the cylindrical filter mesh 500, the first magnetic member 300 can be fixedly installed at the bottom portion or the middle portion of the side skeleton of the cylindrical filter mesh 500, and the second magnetic member 400 can be installed at the bottom portion or the side wall of the water cup 100.

[0110] Referring to FIG. 1 and FIG. 2, in an embodiment, both an inner circumference of the installation portion 511 and an outer circumference of the installation portion 511 are provided with limit ring protrusions 512 protruding toward the spray arm body 210 to form a receive groove 513 between the two limit ring protrusions 512 for receiving and installing the first magnetic member 300. The provision of the receive groove 513 facilitates the positioning and installation of the first magnetic member 300. Furthermore, the first magnetic member 300 is installed in the receive groove 513, that is, installed at the inner side of the cylindrical filter mesh 500, which facilitates improving the installation stability of the first magnetic member 300. The receive groove 513 has an annular structure, and the first magnetic member 300 can be configured as an annular structure correspondingly, or the receive groove 513 can accommodate and install multiple first magnetic members 300, and the multiple first magnetic members 300 are distributed along the circumference of the receive groove 513. Regarding the fixation of the first magnetic member 300 and the installation portion 511, it can be that the first magnetic member 300 is fixed to the installation portion 511 by the limit ring protrusion 512 at both sides; it can be that the first magnetic member 300 is fixed to the installation portion 511 by bonding; or it further can be that the installation portion 511 is provided with a clamp rib, and the first magnetic member 300 is clamped by the clamp rib. Certainly, in other embodiments, it can be that the first magnetic member 300 is installed at the outside of the installation portion 511.

[0111] In an embodiment, as shown in FIG. 1, the dishwasher further includes a rotation wheel 600 rotatably connected to the water cup 100, the second magnetic member 400 is provided at the rotation wheel 600, and the drive member is drivingly connected to the rotation wheel 600 to drive the rotation wheel 600 to rotate about an axis of the rotation shaft 220. It is understood that the second magnetic member 400 is not convenient for direct connection with the drive member. In this embodiment, the drive member is directly drivingly connected to the rotation. Under the drive member's drive, the rotation wheel 600 can rotate around the axis of the rotation shaft 220, and the second magnetic member 400 provided thereon can also rotate around the axis of the rotation shaft 220, so that it can be sequentially transmitted to the rotation shaft 220 through the first magnetic member 300 and the cylindrical filter mesh 500. Certainly, in other embodiments, the second magnetic member 400 can also be provided with a fixed shaft to allow the drive member to directly drive and connect.

[0112] In an embodiment, the drive member is a motor provided with a drive gear, an outer lateral circumference of the rotation wheel 600 is provided with a transmission tooth groove, and the drive gear engages with the transmission tooth groove. In this embodiment, the rotation wheel 600 is coaxially provided with the rotation shaft 220. When the motor is running, the drive gear rotates circumferentially, the drive gear engages with the transmission tooth groove, thereby driving the rotation wheel 600 to rotate circumferentially, thereby driving the second magnetic member 400 to rotate about the axis of the rotation shaft 220. Certainly, in other embodiments, the drive member may be configured as a rotary reducer, with the rotary disk of the rotary reducer fixedly installed at the outer circumference of the rotation wheel 600, and the rotation wheel 600 coaxially provided with the rotation shaft 220. Alternatively, the rotation wheel 600 may be provided with a fixed shaft coaxial with the rotation shaft 220, and the rotary disk fixedly sleeved at the outer circumference of the fixed shaft. In this way, when the rotary reducer is operated, the rotary disk rotates circumferentially, thereby driving the second magnetic member 400 to rotate about the axis of the rotation shaft 220.

[0113] In an embodiment, as shown in FIG. 1, the second magnetic member 400 is installed at the side of the rotation wheel 600 proximal to the second magnetic member 400, which can reduce the distance between the first magnetic member 300 and the second magnetic member 400 to increase the magnetic attraction between the two, so that it is beneficial to drive the first magnetic member 300 to rotate by the rotation of the second magnetic member 400. Specifically, an annular groove for accommodating and installing the second magnetic member 400 is provided at one side of the rotation wheel 600 proximal to the first magnetic member 300. In this way, it can be that the first magnetic member 300 and the second magnetic member 400 are correspondingly set in an annular shape; or it can be that a plurality of the first magnetic member 300 and a plurality of the second magnetic member 400 are provided in a one-to-one correspondence, and the plurality of second magnetic members 400 are distributed circumferentially in the annular groove of the rotation wheel 600, and the plurality of first magnetic members 300 are distributed circumferentially in the receive groove 513. At this time, the two adjacent second magnetic members 400 can also be set that opposite magnetic poles are facing each other, and the plurality of first magnetic members 300 installed in the receive groove 513 can also be set in this way accordingly. In this way, it can improve the installation stability of the first magnetic member 300 and the second magnetic member 400, as well as the driving force of the first magnetic member 300 on the second magnetic member 400.

[0114] As shown in FIG. 1, in an embodiment, a water inlet connector 110 is provided at a bottom of the water cup 100, a wash chamber is provided above the water cup 100, the rotation shaft 220 is movably inserted at the water inlet connector 110, and the spray arm body 210 is accommodated at the wash chamber (not shown in the figures) and communicating with the water inlet connector 110 through the rotation shaft 220. A rotation wheel 600 is rotatably installed at the outside of the water inlet connector 110. It is understood that water inlet connector 110 is also communicating with the wash pump. The spray arm body 210 is provided with a plurality of water spout holes. The wash pump supplies water to the spray arm 200 by the water inlet connector 110. The water in the water inlet connector 110 reaches the spray arm body 210 by the rotation shaft, and is finally sprayed into the wash chamber through the water spout holes of the spray arm body 210 to clean the dishes placed in the wash chamber. In this embodiment, the rotation shaft 220 can both transmit motion to the spray arm body 210 and deliver water to the spray arm body 210. The reuse of the rotation shaft 220 helps to simplify the structure of the dishwasher. Certainly, in other embodiments, the rotation shaft 220 may be provided through the bottom of the water cup 100 and directly connected to the water inlet pipe of the wash pump. Alternatively, the rotation shaft 220 may be a solid structure rotatably connected to another position of the water cup 100. The spray arm 200 may also include a water inlet portion communicating with the spray arm body 210, which communicates with the water inlet connector 110 by the water inlet portion.

[0115] In an embodiment, as shown in FIG. 6, the water inlet connector 110 includes a main body 111 and a connection portion 112, the main body 111 is connected to the bottom of the water cup 100 through the connection portion 112, an inner diameter of the connection portion 112 is larger than an inner diameter of the main body 111, a seal element 700 is fixedly provided within the connection portion 112, and the rotation shaft 220 is movably provided through the seal element 700. It can be understood that the seal element 700 is configured as an annular structure and is sleeved at the outside of the rotation shaft 220 to seal the connection between the rotation shaft 220 and the water inlet connector 110 to prevent water leakage. The inner diameter of the connection portion 112 is larger than the inner diameter of the main body 111. A space for installing the seal element 700 can be formed in the connection portion 112. The gap between the main body 111 and the connect shaft is not too large, which can reduce the water flow between the main body 111 and the connect shaft, thereby preventing the seal element 700 from being subjected to excessive impact and failing. Without loss of generality, the outer ring of seal element 700 abuts the inner peripheral wall of the connection portion 112, while the inner ring abuts the outer peripheral wall of the rotation shaft 220, which can improve the seal between the rotation shaft 220 and the connection portion 112 without excessively affecting the circumferential rotation of the rotation shaft 220.

[0116] In an embodiment, as shown in FIG. 6, the connection portion 112 is more convex than the main body 111, and the rotation wheel 600 is sleeved at an outside of the connection portion 112. The connection portion 112 is more convex than the main body 111, and the outer diameter of the connection portion 112 is also larger than the outer diameter of the main body 111. In this way, the wall thickness of the connection portion 112 is not too small, which is beneficial to ensuring the structural stability of the water inlet connector 110. The rotation wheel 600 is sleeved at the connection portion 112, which can reduce the distance between the first magnetic member 300 and the second magnetic member 400, and thereby increase the magnetic attraction between the first magnetic member 300 and the second magnetic member 400, which is beneficial to driving the rotation shaft 220 to rotate.

[0117] In an embodiment of the present invention, as shown in FIG. 1, the dishwasher includes a water cup 100, a cylindrical filter mesh 500, a first magnetic member 300, a second magnetic member 400, and a drive member. The cylindrical filter mesh 500 is rotatably provided in the water cup 100. The first magnetic member 300 is fixed to the cylindrical filter mesh 500. The second magnetic member 400 is provided opposite to the first magnetic member 300. Opposite magnetic poles of the second magnetic member 400 and the first magnetic member 300 are facing each other, and the second magnetic member 400 can rotate with respect to the water cup 100. The drive member is drivingly connected to the second magnetic member 400 to drive the second magnetic member 400 to rotate, thereby driving the cylindrical filter mesh 500 to rotate.

[0118] In the technical solution of the present invention, opposite magnetic poles of the first magnetic member 300 and the second magnetic member 400 are facing each other, there is a magnetic attraction between the first magnetic member 300 and the second magnetic member 400, which drives the drive member to operate and drives the second magnetic member 400 to rotate. The magnetic attraction between the first magnetic member 300 and the second magnetic member 400 can drive the first magnetic member 300 to rotate synchronously. Since the first magnetic member 300 is fixedly installed at the cylindrical filter mesh 500, the cylindrical filter mesh 500 will be driven by the first magnetic member 300 to rotate. It can be understood that the cylindrical filter mesh 500 rotates in the water cup 100, which can increase the force between it and the water flow, thereby improving the flushing effect of the water flow on the cylindrical filter mesh 500, that is, improving the self-cleaning effect of the cylindrical filter mesh 500 in the water cup 100. As a result, the user does not need to frequently remove the cylindrical filter mesh 500 for cleaning, which is conducive to improving the user experience. Furthermore, the technical solution of the present invention drives the cylindrical filter mesh 500 to rotate in a non-contact manner of magnetic drive. If the cylindrical filter mesh 500 becomes stuck, the drive member can continue to drive the second magnetic member 400 to rotate without being affected by the cylindrical filter mesh 500, which could cause the drive member to become stuck or even malfunction.

[0119] In an embodiment, as shown in FIG. 1, the dishwasher further includes a spray arm 200, and the spray arm 200 includes a spray arm body 210 and a rotation shaft 220 connected to spray arm body 210. The rotation shaft 220 is coaxially provided with the cylindrical filter mesh 500, and at least one of the rotation shaft 220 and the spray arm body 210 is fixedly connected to the cylindrical filter mesh 500, and the drive member is used to drive the cylindrical filter mesh 500 to rotate circumferentially. In this embodiment, the cylindrical filter mesh 500 is driven to rotate circumferentially, thereby driving the rotation shaft 220 to rotate circumferentially. In this way, the rotation speed of the second magnetic member 400 can be controlled by controlling the operation of the drive member, thereby controlling the rotation speed of the spray arm 200. The user can conveniently and accurately adjust the rotation speed of the spray arm 200. In this way, the spray arm 200 can be controlled to rotate at different speeds for dishes with different degrees of dirtiness, thereby achieving lower energy consumption and lower water consumption while ensuring the cleaning effect.

[0120] In an embodiment, as shown in FIG. 1, a water inlet connector 110 is provided at the bottom of the water cup 100, a wash chamber (not shown in the figures) is provided above the water cup 100, the rotation shaft 220 passes through the cylindrical filter mesh 500 and is movably inserted into the water inlet connector 110, and the spray arm body 210 is accommodated at the wash chamber and communicates with the water inlet connector 110 by the rotation shaft 220. It is understood that water inlet connector 110 is also communicating with the wash pump. The spray arm body 210 is provided with a plurality of water spout holes. The wash pump supplies water to the spray arm 200 by the water inlet connector 110. The water in the water inlet connector 110 reaches the spray arm body 210 by the rotation shaft, and is finally sprayed into the wash chamber through the water spout holes of the spray arm body 210 to clean the dishes placed in the wash chamber. In this embodiment, the rotation shaft 220 can both transmit motion to the spray arm body 210 and deliver water to the spray arm body 210. The reuse of the rotation shaft 220 helps to simplify the structure of the dishwasher. Certainly, in other embodiments, the rotation shaft 220 may be provided through the bottom of the water cup 100 and directly connected to the water inlet pipe of the wash pump. Alternatively, the rotation shaft 220 may be a solid structure rotatably connected to another position of the water cup 100. The spray arm 200 may also include a water inlet portion communicating with the spray arm body 210, which communicates with the water inlet connector 110 by the water inlet portion.

[0121] Referring to both FIG. 1 and FIG. 5, in an embodiment, an installation portion 511 is provided at a bottom of the cylindrical filter mesh 500, the rotation shaft 220 is configured to pass through the installation portion 511, and the first magnetic member 300 is fixedly installed to the installation portion 511. Thus, the cylindrical filter mesh 500 is provided around the rotation shaft 220, the installation portion is sleeved at the outer circumference of the rotation shaft 220, and the first magnetic member 300 is installed at the installation portion 511, which allows the first magnetic member 300 to be closer to the rotation shaft 220, thereby facilitating the transmission of motion from the cylindrical filter mesh 500 to the rotation shaft 220. Without loss of generality, the cylindrical filter mesh 500 and the rotation shaft 220 are coaxially provided so that the cylindrical filter mesh 500 and the rotation shaft 220 can both rotate about their respective axes, thereby improving the rotational stability of the cylindrical filter mesh 500 and the rotation shaft 220. Certainly, in other embodiments, the rotation shaft 220 can be fixedly connected to a side portion of the cylindrical filter mesh 500, the first magnetic member 300 can be fixedly installed at the bottom portion or the middle portion of the side skeleton of the cylindrical filter mesh 500, and the second magnetic member 400 can be installed at the bottom portion or the side wall of the water cup 100.

[0122] Referring to FIG. 1 and FIG. 2, in an embodiment, both an inner circumference of the installation portion 511 and an outer circumference of the installation portion 511 are provided with limit ring protrusions 512 protruding upwardly to form a receive groove 513 between the two limit ring protrusions 512 for receiving and installing the first magnetic member 300. The provision of the receive groove 513 facilitates the positioning and installation of the first magnetic member 300. Furthermore, the first magnetic member 300 is installed in the receive groove 513, that is, installed at the inner side of the cylindrical filter mesh 500, which facilitates improving the installation stability of the first magnetic member 300. The receive groove 513 has an annular structure, and the first magnetic member 300 can be configured as an annular structure correspondingly, or the receive groove 513 can accommodate and install multiple first magnetic members 300, and the multiple first magnetic members 300 are distributed along the circumference of the receive groove 513. Regarding the fixation of the first magnetic member 300 and the installation portion 511, it can be that the first magnetic member 300 is fixed to the installation portion 511 by the limit ring protrusion 512 at both sides; it can be that the first magnetic member 300 is fixed to the installation portion 511 by bonding; or it further can be that the installation portion 511 is provided with a clamp rib, and the first magnetic member 300 is clamped by the clamp rib. Certainly, in other embodiments, it can be that the first magnetic member 300 is installed at the outside of the installation portion 511.

[0123] Referring to both FIG. 1 and FIG. 3, in an embodiment, a first connection sleeve 530 is fixedly provided within the cylindrical filter mesh 500, and the rotation shaft 220 is passed through and fixedly connected to the first connection sleeve 530. In this way, the rotation shaft 220 is fixedly connected to the cylindrical filter mesh 500 and can rotate under the drive of the cylindrical filter mesh 500. Moreover, the connection stability between the rotation shaft 220 and the cylindrical filter mesh 500 is strong, which helps to ensure the smooth rotation of the rotation shaft 220. Certainly, in other embodiments, the rotation shaft 220 can also be fixedly connected to the installation portion 511. The rotation shaft 220 and the installation portion 511 can be bonded with a water-insoluble adhesive, or can be fixedly connected by snap-fitting or screw locking.

[0124] In an embodiment, the cylindrical filter mesh 500 is provided with an inner skeleton 510 and an outer skeleton 520 connected to each other, and the side portions of the inner skeleton 510 and outer skeleton 520 are annular structures and are both provided with filter meshes, the mesh number of the filter mesh provided at the inner skeleton 510 can be smaller than the mesh number of the filter mesh provided at the outer skeleton 520, and preliminary filtration is performed by the filter mesh provided at the inner skeleton 510, and then final filtration is performed by the filter mesh provided at the outer skeleton 520. In this way, it can ensure that food residues can be effectively filtered, and can also prevent food residues from clogging the mesh of the filter mesh, thereby affecting the flow of water between the inside and outside of the cylindrical filter mesh 500. In addition, the installation portion 511 is provided at the bottom portion of the inner skeleton 510 as a part of the inner skeleton 510. It can be understood that food residues will remain at both the inner sides of the inner skeleton 510 and outer side of the inner skeleton 510, and most of the food residues are concentrated at the inner side of the inner skeleton 510. The filter mesh of the inner skeleton 510 is more easily attached by food residues. Therefore, when the first magnetic member 300 is driven to rotate, the installation portion 511 can also drive the inner skeleton 510 to rotate as a whole, which enhances the flushing effect of the water flow on the food residues attached to the filter mesh of the inner skeleton 510, thereby enhancing the self-cleaning effect of the filter mesh of the inner skeleton 510. The inner skeleton 510 and the outer skeleton 520 can be fixedly connected. When the inner skeleton 510 rotates, the outer skeleton 520 will also be driven, that is, the cylindrical filter mesh 500 as a whole can rotate. As a result, the water flow flushing effect on the filter of the outer skeleton 520 can also be improved, which is beneficial to improving the self-cleaning effect of the filter mesh of the outer skeleton 520; the inner skeleton 510 and the outer skeleton 520 can also be movably connected. It can be understood that most of the food residue is filtered by the filter mesh of the inner skeleton 510 and concentrated at the inner side of the inner skeleton 510. There is less food residue attached to the filter mesh of the outer skeleton 520. Therefore, even if the outer skeleton 520 does not rotate with the filter of the inner skeleton 510, the accumulation of food residue on the filter mesh is relatively small, and it does not need to be frequently removed for cleaning. In addition, in this case, it is only necessary to drive the inner skeleton 510 of the cylindrical filter mesh 500 to rotate, which can reduce the requirement on the magnetic attraction force between the second magnetic member 400 and the first magnetic member 300.

[0125] In an embodiment, as shown in FIG. 1, the dishwasher further includes a rotation wheel 600 movably sleeved at the water inlet connector 110, the second magnetic member 400 is provided at the rotation wheel 600, the drive member is drivingly connected to the rotation wheel 600 to drive the rotation wheel 600 to rotate about the axis of the rotation shaft 220. It is understood that the second magnetic member 400 is not convenient for direct connection with the drive member. In this embodiment, the drive member is directly drivingly connected to the rotation. Under the drive member's drive, the rotation wheel 600 can rotate around the axis of the rotation shaft 220, and the second magnetic member 400 provided thereon can also rotate around the axis of the rotation shaft 220, so that it can be sequentially transmitted to the rotation shaft 220 through the first magnetic member 300 and the cylindrical filter mesh 500. Certainly, in other embodiments, the second magnetic member 400 can also be provided with a fixed shaft to allow the drive member to directly drive and connect.

[0126] In an embodiment, as shown in FIG. 1, the second magnetic member 400 is installed at the side of the rotation wheel 600 proximal to the second magnetic member 400, which can reduce the distance between the first magnetic member 300 and the second magnetic member 400 to increase the magnetic attraction between the two, so that it is beneficial to drive the first magnetic member 300 to rotate by the rotation of the second magnetic member 400. Specifically, an annular groove for accommodating and installing the second magnetic member 400 is provided at one side of the rotation wheel 600 proximal to the first magnetic member 300. In this way, it can be that the first magnetic member 300 and the second magnetic member 400 are correspondingly set in an annular shape; or it can be that a plurality of the first magnetic member 300 and a plurality of the second magnetic member 400 are provided in a one-to-one correspondence, and the plurality of second magnetic members 400 are distributed circumferentially in the annular groove of the rotation wheel 600, and the plurality of first magnetic members 300 are distributed circumferentially in the receive groove 513. At this time, the two adjacent second magnetic members 400 can also be set that opposite magnetic poles are facing each other, and the plurality of first magnetic members 300 installed in the receive groove 513 can also be set in this way accordingly. In this way, it can improve the installation stability of the first magnetic member 300 and the second magnetic member 400, as well as the driving force of the first magnetic member 300 on the second magnetic member 400.

[0127] The present invention also provides a dishwasher spray water system, which is applied to the above-mentioned dishwasher.

[0128] Referring to FIG. 7 and FIG. 8, in an embodiment of the present invention, the dishwasher spray water system includes an inner pot 10, a water cup 100, a lift cup filter mesh assembly 30, and a lower spray arm 40. The inner pot 10 is provided with a wash chamber 101. A water cup 100 is installed at the bottom of the inner pot 10 and communicates with the wash chamber 101. The lift cup filter mesh assembly 30 is rotatably installed within the water cup 101. The lower spray arm 40 includes a spray arm body 210 and a water delivery pipe 42. The spray arm body 210 is located within the wash chamber 101. One end of the water delivery pipe 42 is connected to and communicates with the spray arm body 210, while the other end passes through the lift cup filter mesh assembly 30 and is rigidly connected the lift cup filter mesh assembly 30. The water delivery pipe 42 is used to connect to the water supply pipeline to supply water to the lower spray arm 40.

[0129] Specifically, a wash chamber 101 is formed within the inner portion of the inner pot 10. The wash chamber 101 can be designed as a square cavity, a cylindrical cavity, or a cavity of other shapes as needed. A bowl basket or shelf for holding tableware can be placed in the wash chamber 101. The water cup 100 is installed at the bottom of the inner pot 10 through the assembly surface 21. The cup mouth of the water cup 100 communicates with the wash chamber 101. The lift cup filter mesh assembly 30 can be rotatably installed in the water cup 100 through a bracket. The lift cup filter mesh assembly 30 can specifically include a hollow lift cup and a cylindrical filter mesh provided at the circumference of the lift cup. The lower spray arm 40 includes a spray arm body 210 and a water delivery pipe 42. The spray arm body 210 can be configured as a long, horizontally extending strip and is provided with a plurality of spray holes. The water delivery pipe 42 extends vertically downward from the middle of the spray arm body 210. The water delivery pipe 42 passes through the lift cup filter mesh assembly 30 and extends into the water cup 100, positioning the lower spray arm 40 approximately in the middle of the water cup 100. The lower spray arm 40 is rigidly connected to the lift cup filter mesh assembly 30 through the water delivery pipe 42, enabling torque transmission between the lower spray arm 40 and the lift cup filter mesh assembly 30. When one of the lower spray arm 40 and the lift cup filter mesh assembly 30 rotates under the action of an external force (e.g., can be water driven or electric driven), the other can be driven to rotate along with it. For example, the lower spray arm 40 can be driven by water flow or electric drive to rotate, and the lift cup filter mesh assembly 30 can be driven to rotate by the lower spray arm 40. For another example, the lift cup filter mesh assembly 30 can be driven by water flow or electric drive to rotate, and then the lift cup filter mesh assembly 30 drives the lower spray arm 40 to rotate. The water delivery pipe 42 and the lift cup filter mesh assembly 30 can be rigidly connected in a variety of ways, such as welding, fastener connection, snap connection, or keyway connection, as long as it is sufficient to ensure that torque can be transmitted between the two, and no specific restrictions are made here. The water delivery pipe 42 is used to connect to the water supply pipeline. During the washing process, water in the water supply pipeline is transported by the water delivery pipe 42 to the spray arm body 210, and then sprayed out through the spray holes in the spray arm body 210 to spray and rinse the dishes in the wash chamber 101. After the spraying and rinsing, the spray liquid containing food residues collects at the bottom of the inner pot 10 and flows into the lift cup filter mesh assembly 30, the food residues are filtered through the lift cup filter mesh assembly 30, and then flow into the water cup 100; after the washing is completed, the water can be discharged through the drainage pump 90 at the water cup 100.

[0130] The technical solution of the present invention supplies water to the lower spray arm 40 through the water supply pipeline during the washing process, and the tableware in the wash chamber 101 can be sprayed and rinsed through the lower spray arm 40. Since the lower spray arm 40 is provided in the water cup 100, compared with the traditional technology in which the lower spray arm 40 is provided outside the water cup 100, the lower spray arm 40 of the present solution is provided in a more central position, so that the spraying area of the lower spray arm 40 is more reasonable, the spraying area has no dead angle, and can achieve better spraying effect and residue collection effect. Moreover, the lift cup filter mesh assembly 30 is rotatably connected to the water cup 100, the lower spray arm 40 is rigidly connected to the lift cup filter mesh assembly 30 through a water delivery pipe 42. During the washing process, as long as one of the lift cup filter mesh assembly 30 and the lower spray arm 40 rotates under the action of external force (such as water flow drive or electric drive), the other can be driven to rotate. Compared with the traditional technology in which the lift cup filter mesh assembly 30 and the water cup 100 are fixedly connected by a buckle and cannot be moved or rotated during the washing process, the lift cup filter mesh assembly 30 of this solution can rotate with respect to the water cup 100 during the washing process., allowing the water flow to flush different locations around the circumference of the lift cup filter mesh assembly 30, ensuring a comprehensive cleaning of the circumference of the lift cup filter mesh assembly 30, thereby achieving a self-cleaning effect for the lift cup filter mesh assembly 30.

[0131] In an embodiment, the lift cup filter mesh assembly 30 is centrally located within the water cup 100, and the water delivery pipe 42 centrally passes through the lift cup filter mesh assembly 30. Specifically, in an embodiment, the axes of the water cup 100, the lift cup filter mesh assembly 30, and the water delivery pipe 42 coincide or substantially coincide. In this way, this allows the lower spray arm 40 to be centrally located with respect to the water cup 100 and the lift cup filter mesh assembly 30, thus further centralizing the lower spray arm 40, eliminating blind spots in the spraying process, and achieving better spraying and residue collection results.

[0132] To facilitate connection of the water delivery pipe 42 of the lower spray arm 40 with the water supply pipeline, as shown in FIG. 8, in an embodiment, a connection pipe 23 is provided at the bottom of the water cup 100. The connection pipe 23 has a first port for communication with the water cup 100 and a second port for communication with the water supply pipeline. The end of the water delivery pipe 42 distal from the spray arm body 210 communicates with the connection pipe 23 through the first port.

[0133] In an embodiment, the connection pipe 23 can be secured to the bottom of the water cup 100 by means of assembly or integral molding. To simplify the manufacturing process and ensure a reliable seal, in an embodiment, the connection pipe 23 is integrally molded into the bottom of the water cup 100. The water delivery pipe 42 of the lower spray arm 40 extends downward to the bottom of the water cup 100 and is then inserted into the connection pipe 23 through the first port. The outlet end of the water supply pipeline is connected to and communicates with the second port of the connection pipe 23. In this way, the water delivery pipe 42 can be connected to the water supply pipeline by the connection pipe 23. Moreover, the water delivery pipe 42 of the lower spray arm 40 and the water supply pipeline are indirectly connected by the connection pipe 23, so that the water supply pipeline does not interfere with the rotation of the lower spray arm 40.

[0134] To ensure the sealing reliability among the water delivery pipe 42 of the lower spray arm 40, the water cup 100, and the connection pipe 23, in an embodiment, a seal element 700 is provided at the first port, and the seal element 700 is used to seal the mating portions of the water cup 100, the water delivery pipe 42, and the connection pipe 23. Specifically, the seal element 700 can be made of rubber or silicone with good sealing properties. The seal element 700 is sleeved around the outer periphery of the water delivery pipe 42. The inner circumference surface of the seal element 700 is sealed and connected to the outer circumference surface of the water delivery pipe 42, and the outer circumference surface of the seal element 700 is sealed and connected to the matching portion of the water cup 100 and the connecting pipe 23. In this way, it can effectively improve the sealing reliability of the mating portion among the water cup 100, the water delivery pipe 42, and the connection pipe 23, completely eliminating leakage, further increasing the spray arm pressure of the lower spray arm 40, thereby achieving a better spray rinse effect.

[0135] In conventional technology, the lower spray arm 40 of a dishwasher is usually rotated by water drive, the rotation speed of the spray arm is determined by the water pressure of the wash pump 51, it is impossible to arbitrarily adjust the rotation speed of the spray arm, it is impossible to achieve forward and reverse rotation of the spray arm and fixed-point washing, and it is impossible to achieve fixed-point washing and reduce washing time. In order to improve the controllability of the rotation of the lower spray arm 40 and improve the cleaning efficiency, in an embodiment, the dishwasher spray water system also includes a drive mechanism used to drive one of the lower spray arm 40 and the lift cup filter mesh assembly 30 to rotate, thereby driving the other to rotate together.

[0136] In an embodiment, by using the drive mechanism to drive one of the lower spray arm 40 and the lift cup filter mesh assembly 30 to rotate, the other can be driven to rotate. For example, the lower spray arm 40 can be driven to rotate by the drive mechanism, and the lift cup filter mesh assembly 30 can be driven to rotate by the lower spray arm 40; for another example, the lift cup filter mesh assembly 30 can be driven to rotate by the drive mechanism, and the lift cup filter mesh assembly 30 can be driven to rotate by the lower spray arm 40. Compared to water-driven methods, using a drive mechanism to electrically drive the lower spray arm 40 or the lift cup filter mesh assembly 30 offers greater controllability, and can adjust the speed, forward and reverse rotation and fixed-point washing of the lower spray arm 40 at will, thereby achieving targeted cleaning and reducing washing time. For example, the drive mechanism may include a drive motor 61, taking the driving motor 61 driving the lower spray arm 40 as an example, when the speed of the lower spray arm 40 needs to be adjusted, it is only necessary to adjust the torque output by the driving motor 61; when the rotation direction of the lower spray arm 40 needs to be adjusted, it is only necessary to control the drive motor 61 to rotate forward or reverse to adjust the direction of the output torque of the drive motor 61; when it is necessary to achieve fixed-point washing, it is only necessary to drive the lower spray arm 40 to rotate to the preset position and keep it fixed by the drive motor 61.

[0137] The driving cooperation between the drive mechanism and the lift cup filter mesh assembly 30 or the lower spray arm 40 can be a contact driving cooperation or a non-contact driving cooperation. Considering the complex environment of a dishwasher spray water system, a non-contact drive mechanism can be used between the drive mechanism and the lift cup filter mesh assembly 30 or the lower spray arm 40 to eliminate the risk of water leakage.

[0138] Referring to FIG. 7 and FIG. 8, in an embodiment, the drive mechanism includes a drive motor 61, a transmission member 62, and a magnetic couple assembly 63. The drive motor 61 is drivingly connected to the transmission member 62 to drive rotate the transmission member 62 to rotate. The transmission member 62 is located outside the water cup 100. The magnetic couple assembly 63 includes a first magnetic member 300 and a second magnetic member 400. The first magnetic member 300 is located at the transmission member 62, and the second magnetic member 400 is located at the lift cup filter mesh assembly 30. The first magnetic member 300 and the second magnetic member 400 have opposite magnetic poles in the opposite portions.

[0139] Specifically, the drive motor 61 and the transmission member 62 can be driven directly or driven indirectly by a transmission assembly (such as a gear assembly or a synchronous pulley assembly), as long as the drive motor 61 can drive the transmission member 62 to rotate. For example, in an embodiment, the transmission member 62 is a transmission gear. The output end of the drive motor 61 is provided with a drive gear that meshes with the transmission gear. The drive motor 61 drives the drive gear to rotate, thereby driving the transmission gear (i.e., the transmission member 62) to rotate. Certainly, in some embodiments, the transmission member 62 can be a synchronous wheel, the output end of the drive motor 61 also has a synchronous wheel, and a synchronous belt is provided around the outer periphery of the two synchronous wheels. The drive motor 61 drives the synchronous wheel to rotate, and then drives another synchronous wheel (i.e., the transmission member 62) to rotate through the synchronous belt. The transmission member 62 is provided at the outside of the water cup 100, and the transmission member 62 can be specifically provided at the outside of the bottom surface of the water cup 100 or the outside of the peripheral surface of the water cup 100. For example, in an embodiment, the transmission member 62 is provided at the bottom of the water cup 100 and is positioned opposite the bottom of the lift cup filter mesh assembly 30. The magnetic couple assembly 63 includes a first magnetic member 300 and a second magnetic member 400. The first magnetic member 300 is provided at the top of the transmission member 62, and the second magnetic member 400 is provided at the bottom of the lift cup filter mesh assembly 30. The magnetic poles of the first magnetic member 300 and the second magnetic member 400 in the opposing portions are opposite. For example, the north pole of the first magnetic member 300 is opposite the south pole of the second magnetic member 400, and the south pole of the first magnetic member 300 is opposite the north pole of the second magnetic member 400. The specific number of magnetic couple assemblies 63 can be set according to actual needs and can be one, two, or more. The first magnetic member 300 and the second magnetic member 400 can specifically be magnets.

[0140] In an embodiment, the drive motor 61 and the transmission member 62 are both located outside the water cup 100. The lift cup filter mesh assembly 30 is located inside the water cup 100. The transmission member 62 is provided at the first magnetic member 300, and the lift cup filter mesh assembly 30 is provided with the second magnetic member 400. The first magnetic member 300 and the second magnetic member 400 have opposite magnetic poles in the opposing portions, creating an attractive force between the first magnetic member 300 and the second magnetic member 400. At the moment when the drive motor 61 drives the transmission member 62 to rotate, the magnetic resistance between the first magnetic member 300 and the second magnetic member 400 will change. At this time, in order to keep the magnetic resistance unchanged, the second magnetic member 400 will also change accordingly, so that the lift cup filter mesh assembly 30 rotates along with the transmission member 62. Because the lift cup filter mesh assembly 30 and the lower spray arm 40 are rigidly connected, the lower spray arm 40 rotates with the lift cup filter mesh assembly 30. In this way, during the washing process, the drive mechanism can drive the lift cup filter mesh assembly 30 and the lower spray arm 40 to rotate together, enabling the lift cup filter mesh assembly 30 to achieve a self-cleaning effect. Simultaneously, the lower spray arm 40 can implement functions such as adjustable speed and rotation direction, and fixed-point washing, enabling targeted cleaning and reducing washing time. Furthermore, in an embodiment, the drive motor 61, the lift cup filter mesh assembly 30, and the lower spray arm 40 achieve the non-contact drive coupling by the magnetic couple assembly 63, and can completely eliminates the risk of water leakage. Furthermore, the drive motor 61 and the lower spray arm 40 are non-contact driven, even if the lower spray arm 40 is blocked, it will not damage the drive motor 61, thus not affecting the life of the drive motor 61, enabling to improve safety, and allowing for manual intervention and adjustment at any time.

[0141] In an embodiment, a connection pipe 23 is provided at the bottom of a water cup 100, a transmission member 62 is rotatably sleeved around the outer periphery of the connection pipe 23. The transmission member 62 is spaced apart from and opposite the bottom of the water cup 100. A first magnetic member 300 is located at the top of the transmission member 62, and a second magnetic member 400 is located at the bottom of the cup lift filter assembly 30.

[0142] In an embodiment, the connection pipe 23 is provided at the bottom of the water cup 100. The connection pipe 23 is used to install the transmission member 62. The connection pipe 23 can also be used to connect the water delivery pipe 42 of the lower spray arm 40 to the water supply pipeline, making the overall structure more compact. The transmission member 62 can be specifically provided in an annular shape. For example, the transmission member 62 can be a ring-shaped gear. The transmission member 62 is sleeved around the outer periphery of the connection pipe 23. The top surface of the transmission member 62 is opposite to the bottom surface of the water cup 100 and is spaced apart. The bottom surface of the lift cup filter mesh assembly 30 is opposite to the bottom surface of the water cup 100 and is spaced apart. The top surface of the transmission member 62 may be provided with one, two or more first magnetic members 300, and the bottom surface of the lift cup filter mesh assembly 30 may be provided with a second magnetic member 400 that matches the number of the first magnetic members 300.

[0143] Based on the above embodiments, referring to FIG. 8, in an embodiment, a water cup 100 is provided with a water inlet 22 and a water outlet. The water supply pipeline includes a wash pump 51, a water diverter valve 52, and a first water distribution pipe 53. The water diverter valve 52 is provided with a water inlet and a first water diversion port. The water inlet end of the wash pump 51 communicates with the water outlet through a first water pipe 54, and the water outlet end of the wash pump 51 communicates with the water inlet through a second water pipe 55. The first water distribution pipe 53 communicates with the first water diversion port to the water delivery pipe 42.

[0144] In an embodiment, the water inlet end of the first water distribution pipe 53 communicates with the first water diversion port of the water diverter valve 52. The water outlet end of the first water distribution pipe 53 can communicates with the water delivery pipe 42 through a connection pipe 23. The first water distribution pipe 53 can be made of a rubber hose, which is more flexible and easier to bend and connect. When the dishwasher is operating, water can be poured into the water cup 100 through the water inlet 22. The water in the water cup 100 is then transported to the wash pump 51 by the first water pipe 54. After being pressurized by the wash pump 51, the water is transported to the water diverter valve 52 by the second water pipe 55, then the water is transported to the first water distribution pipe 53 through the first water diversion port of the water diverter valve 52, then the water is transported to the water delivery pipe 42 of the lower spray arm 40 by the first water distribution pipe 53; finally, the water is transported to the spray arm body 210 by the water delivery pipe 42, the water is sprayed into the wash chamber 101 of the inner tank 10 through the spray arm, thereby spray-cleaning the dishes in the wash chamber 101. The water in the wash chamber 101 is filtered by the lift cup filter mesh assembly 30 and then returned to the water cup 100, and then the water is transported to the lower spray arm 40 by the water supply pipe, thereby achieving a cyclical cleaning process. In addition, the water cup 100 is also connected to a drain pump 90; when washing is completed, the waste water can be discharged by the drain pump 90. It should be noted that the water diverter valve 52 can be integrated with and installed at the water cup 100, or the water diverter valve 52 can be set independently of the water cup 100 to serve as a separate functional component to supply water to the dishwasher pipeline. For example, as shown in FIG. 7 and FIG. 8, in an embodiment, the water diverter valve 52 is integrated with a side portion of the water cup 100, and the water cup 100 supports and secures the water diverter valve 52. For another example, as shown in FIG. 9, in another embodiment, the water diverter valve 52 is provided at the water cup 100.

[0145] In order to further expand the spray area and improve the washing effect, referring to FIG. 9, in an embodiment, the dishwasher spray water system further includes a middle spray arm 70 and an upper spray arm 80. The upper spray arm 80, the middle spray arm 70 and the lower spray arm 40 are provided in sequence from top to bottom in the wash chamber 101. The water diverter valve 52 is further provided with a second water diversion port and a third water diversion port. The second water diversion port communicates with the middle spray arm 70 by a second water distribution pipe 56, and the third water diversion port communicates with the upper spray arm 80 by a third water distribution pipe 57. In this way, during the washing process, after the wash pump 51 pumps water from the water cup 100 into the water diverter valve 52, it can distribute the water flow by the water diverter valve 52 to the lower spray arm 40, the middle spray arm 70, and the upper spray arm 80, so that the lower spray arm 40, the middle spray arm 70, and the upper spray arm 80 can provide comprehensive, no-blind-angle spraying and rinsing of the lower, middle, and upper areas of the wash chamber 101, thereby achieving a better washing effect.

[0146] In an embodiment, a branch is provided within the valve cavity of the water diverter valve 52; the branch communicates the water inlet with the first water diversion port. In an embodiment, the water in the water cup 100 is pressurized by the wash pump 51 and delivered to the valve cavity of the water diverter valve 52, and then is supplied to the lower spray arm 40 for spraying by a separate branch. In this way, it results in higher pressure in the spray arms of the lower spray arm 40, thereby achieving a better spraying effect.

[0147] To enable a dishwasher to achieve different spray modes, in an embodiment, a switch mechanism is provided within the valve cavity of the water diverter valve 52. The switch mechanism is used to switch the water path state of the water diverter valve 52, allowing the water diverter valve 52 to selectively supply water to at least one of the lower spray arm 40, the middle spray arm 70, and the upper spray arm 80.

[0148] Specifically, the switch mechanism may include a paddle provided within the valve cavity and a drive member that drives the paddle to rotate. For example, when the drive member drives the paddle to rotate to the first position, the water diverter valve 52 can supply water to the lower spray arm 40 independently, realizing the independent spraying mode of the lower spray arm 40; when the drive member drives the paddle to rotate to the second position, the water diverter valve 52 can supply water to the middle spray arm 70 independently, realizing the independent spraying mode of the middle spray arm 70; when the drive member drives the paddle to rotate to the third position, the water diverter valve 52 can supply water to the upper spray arm 80 independently, realizing the independent spraying mode of the upper spray arm 80. In this way, according to actual needs, one of the lower spray arm 40, the middle spray arm 70, and the upper spray arm 80 can be targetedly controlled to operate independently to achieve greater spray arm pressure and better spraying effect. Certainly, the switch mechanism can also be used to switch the water path state of the water diverter valve 52, so that the water diverter valve can simultaneously supply water to any two of the lower spray arm 40, the middle spray arm 70, and the upper spray arm 80, thereby achieving three different spray modes: a simultaneous spray mode for the lower spray arm 40 and the middle spray arm 70, a simultaneous spray mode for the lower spray arm 40 and the upper spray arm 80, or a simultaneous spray mode for the middle spray arm 70 and the upper spray arm 80. Certainly, the switch mechanism can also be used to switch the water path state of the water diverter valve 52, so that the water diverter valve can simultaneously supply water to the lower spray arm 40, the middle spray arm 70, and the upper spray arm 80, thereby achieving a simultaneous spray mode for the lower spray arm 40, the middle spray arm 70, and the upper spray arm 80.

[0149] The above are only some embodiments of the present invention, and are not intended to limit the scope of the present invention. Under the concept of the present invention, any equivalent structure transformation made by using the description and accompanying drawings of the present invention, or directly or indirectly applied in other related technical fields, is included within the scope of the present invention.

Claims

1. A dishwasher, comprising: a water cup; a spray arm comprising a spray arm body and a rotation shaft connected to the spray arm body, wherein the rotation shaft is rotatably connected to the water cup; a cylindrical filter mesh rotatably provided within the water cup, wherein the cylindrical filter mesh is sleeved outside the rotation shaft and fixed to the rotation shaft; and a drive member drivingly connected to the rotation shaft to drive the rotation shaft to rotate circumferentially.

2. The dishwasher according to claim 1, wherein a first connection sleeve is fixedly provided within the cylindrical filter mesh, and the rotation shaft is passed through and fixedly connected to the first connection sleeve.

3. The dishwasher according to claim 2, wherein an outer periphery of the rotation shaft is convexly provided with a limit clamping protrusion, and the first connection sleeve is correspondingly provided with a limit clamping notch, the limit clamping protrusion being engaged with the limit clamping notch.

4. The dishwasher according to claim 2, wherein an outer wall of the rotation shaft is in interference fit with an inner wall of the first connection sleeve.

5. The dishwasher according to claim 4, wherein: the rotation shaft comprises a first connection section and a second connection section; an outer circumference of the first connection section is more convex than an outer circumference of the second connection section; an outer wall of the first connection section is in interference fit with an inner wall of the first connection sleeve; and the second connection section is rotatably connected to the water cup.

6. The dishwasher according to any one of claims 1 to 5, wherein: a second connection sleeve is provided protruding upward from a top of the cylindrical filter mesh; a fixed connection portion connected to the spray arm body is provided at each of opposite sides of the rotation shaft; the fixed connection portion is spaced apart from the rotation shaft; and the second connection sleeve is sleeved at the rotation shaft between the fixed connection portion and the rotation shaft.

7. The dishwasher according to claim 6, wherein: a first limit protrusion portion is protrudingly provided at a side of the fixed connection portion proximal to the rotation shaft; a second limit protrusion portion is protrudingly provided at an outer side of the second connection sleeve correspondingly; and the first limit protrusion portion is position-limited and fitted with a side of the second limit protrusion portion distant from the spray arm body.

8. The dishwasher according to any one of claims 1 to 7, further comprising a first magnetic member and a second magnetic member opposite to the first magnetic member, wherein: the first magnetic member is fixed to the rotation shaft; the second magnetic member and the first magnetic member have opposite magnetic poles; the second magnetic member is rotatable with respect to the water cup; and the drive member is drivably connected to the second magnetic member to drive the second magnetic member to rotate, which in turn drives the rotation shaft to rotate.

9. The dishwasher according to claim 8, wherein the first magnetic member is fixedly installed to the cylindrical filter mesh.

10. The dishwasher according to claim 9, wherein an installation portion is provided at a bottom of the cylindrical filter mesh, wherein the rotation shaft is configured to pass through the installation portion, and the first magnetic member is fixedly installed to the installation portion.

11. The dishwasher according to claim 10, wherein both an inner circumference of the installation portion and an outer circumference of the installation portion are provided with limit ring protrusions protruding toward the spray arm body to form a receive groove between the two limit ring protrusions for receiving and installing the first magnetic member.

12. The dishwasher according to any one of claims 8 to 11, further comprising a rotation wheel rotatably connected to the water cup, wherein the second magnetic member is provided at the rotation wheel, and the drive member is drivingly connected to the rotation wheel to drive the rotation wheel to rotate about an axis of the rotation shaft.

13. The dishwasher according to claim 12, wherein the drive member is a motor provided with a drive gear, wherein an outer lateral circumference of the rotation wheel is provided with a transmission tooth groove, the drive gear engaging with the transmission tooth groove.

14. The dishwasher according to any one of claims 1 to 13, wherein: a water inlet connector is provided at a bottom of the water cup; a wash chamber is provided above the water cup; the rotation shaft is movably inserted at the water inlet connector; and the spray arm body is accommodated in the wash chamber and communicating with the water inlet connector through the rotation shaft.

15. The dishwasher according to claim 14, wherein: the water inlet connector comprises a main body and a connection portion; the main body is connected to the bottom of the water cup through the connection portion; an inner diameter of the connection portion is larger than an inner diameter of the main body; a seal element is fixedly provided within the connection portion; and the rotation shaft is movably provided through the seal element.

16. The dishwasher according to any one of claims 1 to 15, wherein the rotation shaft is coaxially provided with the cylindrical filter mesh, and at least one of the rotation shaft and the spray arm body is fixedly connected to the cylindrical filter mesh.

17. The dishwasher according to any one of claims 6 to 16, wherein the second connection sleeve is fixedly connected to the cylindrical filter mesh by buckle snap-fitting, plugging, or snapping.

18. The dishwasher according to claim 17, wherein an outer circumference of the second connection sleeve at one end proximal to the cylindrical filter mesh extends outwardly to form an installation ring, wherein a connection buckle is protruded from an outer periphery of the installation ring, and the cylindrical filter mesh is correspondingly provided with a connection clamping notch, wherein the connection buckle is buckled into the connection clamping notch.

19. The dishwasher according to any one of claims 15 to 18, wherein an outer ring of the seal is in interference fit with the connection portion.

20. The dishwasher according to any one of claims 15 to 19, wherein the connection portion is more convex than the main body, and the rotation wheel is sleeved at an outside of the connection portion.

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