Motor, water inlet device and dishwasher

Abstract

The utility model relates to motor technical field provides a motor, water inlet device and dish washer, the motor of utility model embodiment includes drive module and pivot, drive module includes stator and rotor, pivot and rotor connect, pivot is hollow to form flow channel, the water inlet end of pivot is used for with water inlet pipe intercommunication, the water outlet end of pivot is used for with the water supply pipe of equipment connection. The motor of utility model embodiment is hollow structure to be equipped with in pivot inside, and the water outlet end of pivot is directly connected with water supply pipe, thereby need not set up gear transmission mechanism between pivot and water supply pipe. Therefore, not only has simplified overall structure, has reduced the structural complexity of motor, has also reduced assembly difficulty. Meanwhile, since need not set up gear transmission component, make the space that motor occupies reduce, be favorable to the compactification and small -size design of equipment overall structure.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to motors, water inlet devices, and dishwashers. Background Technology

[0002] In dishwashers, the spray arm, as a key component for achieving even water spray and improving cleaning effectiveness, typically relies on a complex gear transmission mechanism to realize its rotational movement. For example, a motor transmits power to the spray arm through a gear transmission mechanism, thereby driving its rotation and influencing the circulation and spraying of water. However, this driving method has many shortcomings.

[0003] On the one hand, the gear transmission mechanism increases the complexity of the dishwasher's structure and raises the assembly difficulty. On the other hand, because the gear set occupies a large amount of internal space, it limits the optimal layout of the dishwasher's internal structure and is not conducive to the miniaturization design of the equipment. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the related art. To this end, this utility model proposes a motor that has the advantages of simple structure, small space occupation, and is conducive to the miniaturization design of equipment.

[0005] This utility model also proposes a water inlet device.

[0006] This utility model also proposes a dishwasher.

[0007] The motor according to the first aspect of the present invention includes: The drive module includes the stator and rotor; A rotating shaft is connected to the rotor. The rotating shaft is hollow to form a flow channel. The water inlet end of the rotating shaft is used to communicate with the water inlet pipe, and the water outlet end of the rotating shaft is used to connect with the water supply pipe of the equipment.

[0008] In this embodiment of the invention, the motor has a hollow internal shaft, and the water outlet of the shaft is directly connected to the water supply pipe, thus eliminating the need for a gear transmission mechanism between the shaft and the water supply pipe. This simplifies the overall structure, reduces the complexity of the motor, and decreases assembly difficulty. Furthermore, the elimination of gear transmission components reduces the space occupied by the motor, facilitating a more compact and miniaturized design for the overall equipment.

[0009] In some embodiments, the motor includes: A sealing assembly for sealing the water inlet end of the rotating shaft and the water inlet pipe, and for sealing the water outlet end of the rotating shaft and the water delivery pipe.

[0010] In some embodiments, the sealing assembly includes: A sealing ring is provided between the water inlet end of the rotating shaft and the water inlet pipe, and at least one sealing ring is provided between the water outlet end of the rotating shaft and the water delivery pipe.

[0011] In some embodiments, the sealing assembly includes: The first oil seal sleeve is installed at the water inlet end of the rotating shaft, and a sealing ring is provided on its outer periphery for sealing connection with the water inlet pipe. The second oil seal sleeve is installed at the water outlet end of the rotating shaft; A shaft seal oil seal is provided between the first oil seal sleeve and the rotating shaft, and between the second oil seal sleeve and the rotating shaft.

[0012] In some embodiments, the rotor and the shaft are integrally connected, and / or the rotor is an outer rotor, and / or the inner diameter of the shaft is not less than 8 mm.

[0013] A water inlet device according to a second aspect embodiment of the present invention includes: The motor described in any of the above embodiments; A water inlet pipe is connected to the water inlet end of the rotating shaft; A water supply pipe is connected to the water outlet end of the rotating shaft; A water pump is disposed between the inlet pipe and the rotating shaft, or between the rotating shaft and the delivery pipe.

[0014] The water inlet device of this utility model has the advantages of simple structure, small space occupation, convenient assembly and is conducive to the miniaturization design of equipment.

[0015] In some embodiments, the inlet pipe is provided with an inlet channel, the delivery pipe is provided with a delivery channel, and at least a portion of the inlet channel, the flow channel, and at least a portion of the delivery channel are coaxially arranged.

[0016] In some embodiments, the water pump includes an impeller connected to the shaft.

[0017] A dishwasher according to a third aspect of the present invention includes: The main body has a washing chamber inside; The spray arm is installed inside the washing chamber; In any of the above embodiments, the water supply pipe of the device is the spray arm, and the spray arm is connected to the water outlet end of the rotating shaft.

[0018] The dishwasher of this utility model embodiment adopts the motor described in any of the above embodiments, and the spray arm can be directly driven to rotate by the motor without the need for a traditional gear transmission mechanism, thereby simplifying the overall structure and reducing the space occupied by the dishwasher.

[0019] In some embodiments, a water cup is provided inside the main body, the water cup is located at the bottom of the washing chamber, and the motor and the bottom of the water cup are sealed together; Alternatively, the main body may have an inner liner, and the motor and the inner liner may be sealed together.

[0020] The above-described technical solutions in the embodiments of this utility model have at least one of the following technical effects: In this embodiment of the invention, the motor has a hollow internal shaft, and the water outlet of the shaft is directly connected to the water supply pipe, thus eliminating the need for a gear transmission mechanism between the shaft and the water supply pipe. This simplifies the overall structure, reduces the motor's structural complexity, and decreases assembly difficulty. Furthermore, the elimination of gear transmission components reduces the space occupied by the motor, facilitating a more compact and miniaturized design for the overall equipment.

[0021] Furthermore, by placing the flow channel inside the rotating shaft, the water flows through the central axis of the motor, which not only achieves a compact and reasonable structural layout, but also contributes to the stability of motor operation, reduces vibration and impact caused by water flow eccentricity, and thus effectively reduces the noise of the motor during operation.

[0022] Furthermore, the dishwasher of this embodiment can flexibly change the direction of the water jet from the spray arms by controlling the forward or reverse rotation of the rotating shaft, thereby adjusting the cleaning coverage area. Moreover, by precisely controlling the rotation angle of the rotating shaft, it can reciprocate within a preset angle range or remain stationary, thus controlling the spray arms to perform intensive cleaning on stubborn stains. This angle-controllable rotation method not only improves the targeting and flexibility of cleaning but also effectively addresses uneven soiling of tableware, reducing ineffective cleaning time while ensuring cleaning effectiveness, lowering water and energy consumption, and significantly improving the dishwasher's intelligence and efficiency.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the motor provided in an embodiment of the present invention.

[0026] Figure 2 This is a half-sectional schematic diagram of the motor provided in this embodiment of the utility model.

[0027] Figure 3 This is a schematic diagram of another embodiment of the motor provided in this utility model.

[0028] Figure 4 This is a half-sectional schematic diagram of another embodiment of the motor provided in this utility model.

[0029] Figure 5 This is a schematic diagram of the structure of the dishwasher provided in this embodiment of the utility model.

[0030] Figure label: 100. Electric motor; 200. Dishwasher; 1. Drive module; 2. Stator; 21. Sleeve; 3. Rotor; 4. Shaft; 41. Flow channel; 42. Annular plate; 5. First oil seal sleeve; 6. Sealing ring; 7. Second oil seal sleeve; 8. Shaft seal oil seal; 9. Fixing lug; 10. Washing chamber; 11. Spray arm; 12. Water cup; 13. Washing pump; 14. Divider valve; 15. Drain pump; 16. Main water inlet pipe; 17. Main water outlet pipe. Detailed Implementation

[0031] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0032] like Figures 1 to 5 As shown, the motor 100 in this embodiment of the present invention includes a drive module 1 and a rotating shaft 4.

[0033] The drive module 1 includes a stator 2 and a rotor 3.

[0034] The rotating shaft 4 is connected to the rotor 3. The rotating shaft 4 is hollow to form a flow channel 41. The water inlet end of the rotating shaft 4 is used to connect with the water inlet pipe, and the water outlet end of the rotating shaft 4 is used to connect with the water supply pipe of the equipment.

[0035] The drive module 1 serves as the power source for the motor 100, and the rotor 3 can rotate relative to the stator 2. The rotating shaft 4 is fixedly connected to the rotor 3 so that the rotating shaft 4 and the rotor 3 rotate synchronously. The rotating shaft 4 and the rotor 3 can be directly connected or indirectly connected; for example, the rotating shaft 4 and the rotor 3 can be connected by a reduction gear assembly. Any connection method between the rotating shaft 4 and the rotor 3 in the prior art can be applied to the embodiments of this application. The rotating shaft 4 has a hollow structure with a through-flow channel 41 formed inside, thereby achieving an integrated design of the water channel and power transmission.

[0036] For ease of description, the axis of the rotating shaft 4 is taken as the vertical direction, where the vertical direction is as follows: Figure 1 As shown. The lower end of the rotating shaft 4 is the water inlet end, used to connect to an external water inlet pipe, and the upper end of the rotating shaft 4 is the water outlet end, used to connect to the equipment's water supply pipe. The water outlet end of the rotating shaft 4 is fixedly connected to the water supply pipe, and the rotating shaft 4 can drive the water supply pipe to rotate when it rotates. The water supply pipe may be equipped with spray holes to allow water to be ejected.

[0037] The motor in this application embodiment can be used in household appliances, such as dishwashers 200 or other household appliances that require similar water flow drive and rotating water spray. Of course, the device can also be any device that requires a motor 100 and a water supply.

[0038] During the operation of motor 100, when drive module 1 is powered on, rotor 3 drives shaft 4 to rotate synchronously. At the same time, water flows from inlet pipe into flow channel 41 inside shaft 4, and finally sprays out from nozzles on water supply pipe. As shaft 4 rotates, it drives water supply pipe to rotate as well, causing the water flow sprayed from water supply pipe or connected pipe to rotate as well, thus creating a dynamic rotating spray effect.

[0039] In related technologies, the motor of the dishwasher 200 transmits power to the spray arm 11 through a gear transmission mechanism, thereby driving it to rotate. However, the gear transmission mechanism increases the complexity of the dishwasher 200's structure, increases the difficulty of assembly, and because the gear set occupies a large internal space, it limits the optimized layout of the dishwasher 200's internal structure, which is not conducive to the miniaturization design of the equipment.

[0040] In this embodiment of the invention, the motor 100 has a hollow internal structure for the rotating shaft 4, and the water outlet end of the rotating shaft 4 is directly connected to the water supply pipe, thus eliminating the need for a gear transmission mechanism between the rotating shaft 4 and the water supply pipe. This simplifies the overall structure, reduces the structural complexity of the motor 100, and also reduces assembly difficulty. Furthermore, the elimination of the gear transmission component reduces the space occupied by the motor 100, which is beneficial for the compact and miniaturized design of the overall equipment structure.

[0041] Moreover, by placing the flow channel 41 inside the rotating shaft 4, the water flow passes through the central axis of the motor 100, which not only achieves a compact and reasonable structural layout, but also helps the stability of the motor 100 operation, reduces the vibration and impact caused by the eccentricity of the water flow, and thus effectively reduces the noise of the motor 100 during operation.

[0042] Therefore, the motor 100 of this utility model embodiment has the advantages of simple structure, small space occupation, convenient assembly and is conducive to the miniaturization design of equipment.

[0043] In some embodiments, the motor 100 includes a sealing assembly for sealing the water inlet end and water inlet pipe of the rotating shaft 4, and for sealing the water outlet end and water delivery pipe of the rotating shaft 4.

[0044] The sealing assembly is used to seal the connection between the water inlet end of the rotating shaft 4 and the water inlet pipe to prevent water from entering the motor 100 and causing damage. At the same time, the sealing assembly is also used to seal the connection between the water outlet end of the rotating shaft 4 and the water supply pipe, thereby effectively preventing water from leaking from the water outlet end and ensuring the stable operation and safety of the motor 100.

[0045] The structure of the sealing assembly can be designed according to actual needs. For example, the sealing assembly can be an O-ring or a lip seal.

[0046] In some embodiments, the sealing assembly includes a sealing ring 6, at least one sealing ring 6 is provided between the water inlet end of the rotating shaft 4 and the water inlet pipe, and at least one sealing ring 6 is provided between the water outlet end of the rotating shaft 4 and the water delivery pipe.

[0047] At least one sealing ring 6 is provided between the water inlet end of the rotating shaft 4 and the water inlet pipe, thereby preventing external water from entering the motor 100 through the gap, thus avoiding damage or short circuit to the internal components of the motor 100.

[0048] At the same time, at least one sealing ring 6 is provided between the water outlet end of the rotating shaft 4 and the water supply pipe to prevent water from leaking from the water outlet end, ensure stable water delivery, and improve the sealing performance and operational reliability of the motor 100.

[0049] The number of sealing rings 6 can be designed according to actual needs. For example, one, two or three sealing rings 6 can be provided between the water inlet end of the rotating shaft 4 and the water inlet pipe, and between the water outlet end of the rotating shaft 4 and the water delivery pipe.

[0050] In some embodiments, the sealing assembly includes a first oil seal sleeve 5, a second oil seal sleeve 7, and a shaft seal oil seal 8.

[0051] The first oil seal sleeve 5 is installed at the water inlet end of the rotating shaft 4, and a sealing ring 6 is provided on its outer periphery for sealing connection with the water inlet pipe.

[0052] The second oil seal sleeve 7 is installed at the water outlet end of the rotating shaft 4.

[0053] The shaft seal oil seal 8 is located between the first oil seal sleeve 5 and the rotating shaft 4, and between the second oil seal sleeve 7 and the rotating shaft 4.

[0054] The water inlet end of the rotating shaft 4 is provided with a first oil seal sleeve 5, and a sealing ring 6 is provided on the outer periphery of the first oil seal sleeve 5 to achieve a sealed connection with the water inlet pipe and prevent water from leaking out from the interface; at the same time, a second oil seal sleeve 7 is also sealed and installed at the water outlet end of the rotating shaft 4, and a sealing ring 6 is also provided on the outer periphery of the second oil seal sleeve 7 to ensure the sealing performance of the water outlet end of the rotating shaft 4.

[0055] The shaft seal oil seal 8 effectively prevents water leakage during the rotation of the shaft 4, thereby further improving the sealing reliability between the shaft 4 and the first oil seal sleeve 5, and between the shaft 4 and the second oil seal sleeve 7. Thus, by setting the shaft seal oil seal 8, efficient dynamic sealing is achieved during the rotation of the shaft 4, preventing water leakage between the shaft 4 and the first oil seal sleeve 5, and between the shaft 4 and the second oil seal sleeve 7, thereby improving the waterproof performance and safety of the motor 100.

[0056] The motor 100 of this utility model embodiment, through the design of the above-mentioned sealing component, effectively improves the waterproof reliability of the motor 100, ensures the stable operation of the motor 100, and avoids the impact of water leakage on surrounding electrical components.

[0057] In other embodiments, such as Figure 1 and Figure 2 As shown, the stator 2 is provided with a fixing ear 9, which is used to fix it to the part of the device to be installed.

[0058] The mounting ear 9 is used to fix the motor 100 to the part of the device to be installed, such as the water cup 12 inside the dishwasher 200 or other structural supports such as the inner tub of the dishwasher 200.

[0059] The motor 100 of this embodiment, by providing the fixing lug 9, not only achieves a stable installation of the motor 100, but also enhances the structural stability of the entire motor 100 during operation, avoiding displacement or loosening caused by vibration or water flow reaction force. Furthermore, the design of the fixing lug 9 provides a standardized connection method for assembly, improving installation efficiency and facilitating subsequent maintenance and disassembly.

[0060] In some embodiments, the rotor 3 and the shaft 4 are integrally connected. For example, the rotor 3 and the shaft 4 are integrally formed.

[0061] In this embodiment of the utility model, the motor 100 has a rotor 3 and a rotating shaft 4 connected as a single unit, which helps to improve power transmission efficiency and structural stability, and avoids power loss or rotational imbalance caused by loose connection.

[0062] In some embodiments, rotor 3 is an external rotor, thereby making the overall layout of motor 100 more compact. Of course, the structure of rotor 3 is not limited; for example, it can also adopt the structure of a synchronous motor.

[0063] In some embodiments, the inner diameter of the rotating shaft 4 is not less than 8 mm. In other words, the inner diameter of the rotating shaft 4 is greater than or equal to 8 mm. For example, the inner diameter of the rotating shaft 4 is 8 mm, 10 mm, or 12 mm, etc.

[0064] In this embodiment of the invention, the inner diameter of the rotating shaft 4 of the motor 100 is set to be no less than 8mm to ensure that the flow channel 41 has sufficient flow area to meet the water flow requirements of the equipment under high pressure and high flow rate rinsing, while reducing water flow resistance and improving cleaning efficiency.

[0065] In some embodiments, the inlet pipe is provided with an inlet channel, the delivery pipe is provided with a delivery channel, and at least a portion of the inlet channel, the flow channel 41 and at least a portion of the delivery channel are coaxially arranged.

[0066] The inlet pipe has an inlet channel for guiding water flow in, and the outlet pipe has an outlet channel for delivering water out.

[0067] At least a portion of the water inlet channel, the flow channel 41 within the rotating shaft 4, and at least a portion of the water delivery channel are configured as coaxial structures. In other words, the entire water inlet channel is coaxially arranged with the flow channel 41 within the rotating shaft 4, or a portion of the water inlet channel adjacent to the rotating shaft 4 is coaxially arranged with the flow channel 41, while another portion of the water inlet channel is not coaxially arranged with the flow channel 41 within the rotating shaft 4; the entire water delivery channel is coaxially arranged with the flow channel 41 within the rotating shaft 4, or a portion of the water delivery channel adjacent to the rotating shaft 4 is coaxially arranged with the flow channel 41 within the rotating shaft 4, while another portion of the water delivery channel is not coaxially arranged with the flow channel 41 within the rotating shaft 4.

[0068] In this embodiment of the invention, the motor 100, at least a portion of the water inlet channel, the flow channel 41 inside the rotating shaft 4, and at least a portion of the water delivery channel are connected in a coaxial arrangement, meaning their central axes coincide or are height-aligned. This structural design allows water to flow smoothly from the water inlet pipe through the flow channel 41 inside the rotating shaft 4 in a vertical direction, and finally be delivered to the water delivery pipe, reducing the kinetic energy loss of the water flow and thus ensuring that the water flow has a good impact effect on stains.

[0069] In other embodiments, such as Figure 3 and Figure 4 As shown, the outer side of the rotating shaft 4 does not have a first oil seal 5 or a second oil seal 7. Instead, multiple sealing rings 6 are directly arranged at the connection between the rotating shaft 4 and the water inlet pipe or water delivery pipe, thereby achieving a sealed connection between the rotating shaft 4 and the water inlet pipe or water delivery pipe. This structure simplifies the assembly process, reduces manufacturing costs, and reduces the space occupied by the oil seal while ensuring sealing performance, further improving the compactness of the overall structure.

[0070] In other embodiments, such as Figure 3 and Figure 4 As shown, the stator 2 is provided with a sleeve 21 inside, and the rotating shaft 4 passes through the sleeve 21. The rotating shaft 4 and the sleeve 21 can rotate relative to each other. At least one sealing ring 6 is also provided between the rotating shaft 4 and the sleeve 21 to prevent water from flowing into the motor along the rotating shaft 4, so as to ensure the safety and stability of the motor in the water environment.

[0071] An annular plate 42 is provided on the outer periphery of the rotating shaft 4. The annular plate 42 is connected to the rotor 3 by fasteners, thereby realizing the synchronous rotation of the rotating shaft 4 and the rotor 3.

[0072] The water inlet device of this utility model embodiment includes the motor 100, water inlet pipe, water delivery pipe, and water pump described in any of the above embodiments. The water inlet pipe is connected to the water inlet end of the rotating shaft 4. The water delivery pipe is connected to the water outlet end of the rotating shaft 4. The water pump is disposed between the water inlet pipe and the rotating shaft 4, or the water pump is disposed between the rotating shaft 4 and the water delivery pipe.

[0073] The motor 100 is the core driving component. Its rotating shaft 4 has a hollow structure and forms a water flow channel. The water inlet pipe is connected to the water inlet end of the rotating shaft 4 to introduce external water into the interior of the rotating shaft 4. The water delivery pipe is connected to the water outlet end of the rotating shaft 4 to spray water evenly to the washing area.

[0074] The water pump is located between the inlet pipe and the rotating shaft 4, or between the rotating shaft 4 and the water delivery pipe, to provide sufficient pressure for the water flow and ensure the spraying effect.

[0075] The water inlet device of this embodiment features a hollow internal structure for the rotating shaft 4 of the motor 100, and directly connects the water outlet end of the rotating shaft 4 to the water supply pipe, thus eliminating the need for a gear transmission mechanism between the rotating shaft 4 and the water supply pipe. This simplifies the overall structure, reduces the structural complexity of the motor 100, and decreases assembly difficulty. Furthermore, the elimination of the gear transmission component reduces the space occupied by the motor 100, facilitating a more compact and miniaturized design for the overall structure of the water inlet device.

[0076] Therefore, the water inlet device of this utility model has the advantages of simple structure, small space occupation, convenient assembly and is conducive to the miniaturization design of equipment.

[0077] In some embodiments, the water pump includes an impeller connected to a rotating shaft 4.

[0078] The impeller is connected to the hollow rotating shaft 4, and the rotating shaft 4 drives the impeller to rotate synchronously while rotating. This structural design allows the power input of the water pump and the rotation drive of the water delivery pipe to share the same rotating shaft 4, eliminating the need for a separate power drive component for the impeller. This simplifies the transmission structure inside the water inlet device, thereby reducing the space occupied by the water inlet device and facilitating its miniaturization design.

[0079] like Figure 4 As shown, the dishwasher 200 of this embodiment includes a main body, a spray arm 11, and a motor 100 as described in any of the above embodiments. A washing chamber 10 is formed inside the main body. The spray arm 11 is installed inside the washing chamber 10. The water supply pipe of the device is the spray arm 11, and the spray arm 11 is connected to the water outlet end of the rotating shaft 4.

[0080] The main body has a washing chamber 10 for accommodating and cleaning tableware.

[0081] The spray arm 11 is installed inside the washing chamber 10 and connected to the rotating shaft 4 of the motor 100. Specifically, the spray arm 11 serves as the water supply pipe of the equipment, with its inlet end sealed to the outlet end of the rotating shaft 4, so that water can flow through the hollow rotating shaft 4 and be delivered to the spray hole of the spray arm 11, and finally clean the tableware by rotating spray.

[0082] The dishwasher 200 of this utility model adopts the motor 100 described in any of the above embodiments, and the spray arm 11 can be directly driven to rotate by the motor without the need for a traditional gear transmission mechanism, thereby simplifying the overall structure and reducing the space occupied by the dishwasher 200.

[0083] Furthermore, the dishwasher 200 of this embodiment can flexibly change the direction of the water jet from the spray arm 11 by controlling the forward or reverse rotation of the rotating shaft 4, thereby adjusting the cleaning coverage area. Further, by precisely controlling the rotation angle of the rotating shaft 4, the shaft 4 can reciprocate within a preset angle range or remain stationary, thereby controlling the spray arm 11 to perform enhanced cleaning on stubborn stains. This angle-controllable rotation method not only improves the targeting and flexibility of cleaning but also effectively addresses uneven soiling of tableware, reducing ineffective cleaning time, lowering water and energy consumption while ensuring cleaning effectiveness, and significantly improving the intelligence level and efficiency of the dishwasher 200.

[0084] In some embodiments, a water cup 12 is provided inside the main body, located at the bottom of the washing chamber 10, and the motor 100 is sealed to the bottom of the water cup 12. The water cup 12, located at the bottom of the washing chamber 10, is provided inside the main body to collect washing water returning from or being discharged from the spray arm 11. Alternatively, an inner tank is provided inside the main body, and the motor 100 is sealed to the inner tank.

[0085] The motor 100 and the bottom of the water cup 12 are sealed together. Specifically, the hollow shaft 4 of the motor passes through the water cup 12 and is connected to the spray arm 11. At the same time, the connection between the shaft 4 and the water cup 12 is ensured to have good waterproof performance through the sealing structure (such as oil seal, O-ring, etc.) to prevent water leakage or seepage during operation.

[0086] In other embodiments, the dishwasher 200 includes a washing pump 13, a water distribution valve 14, a drain pump 15, a main water inlet pipe 16, and a main water outlet pipe 17. Multiple spray arms 11 are arranged at intervals along the vertical direction, with the spray arm 11 located at the bottom of the washing chamber 10 connected to a motor 100. The inlet of the washing pump 13 is connected to a water cup 12, and the outlet of the washing pump 13 is connected to the water distribution valve 14. The water distribution valve 14 directs water flow to the multiple spray arms 11 to achieve comprehensive cleaning coverage of areas at different heights. The water cup 12 is connected to the main water inlet pipe 16 and the main water outlet pipe 17. The drain pump 15 is located on the main water inlet pipe 16 and is used to discharge wastewater from the washing chamber 10 to the outside of the dishwasher 200 during the draining stage.

[0087] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0088] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0089] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0090] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. An electric motor, characterized in that, include: The drive module includes the stator and rotor; A rotating shaft is connected to the rotor. The rotating shaft is hollow to form a flow channel. The water inlet end of the rotating shaft is used to communicate with the water inlet pipe, and the water outlet end of the rotating shaft is used to connect with the water supply pipe of the equipment. The stator is provided with a sleeve, the rotating shaft passes through the sleeve, and the rotating shaft and the sleeve can rotate relative to each other. At least one sealing ring is provided between the rotating shaft and the sleeve. The outer circumference of the rotating shaft is provided with an annular plate, and the annular plate is connected to the rotor by fasteners.

2. The motor according to claim 1, characterized in that, The motor includes: A sealing assembly for sealing the water inlet end of the rotating shaft and the water inlet pipe, and for sealing the water outlet end of the rotating shaft and the water delivery pipe.

3. The motor according to claim 2, characterized in that, The sealing assembly includes: A sealing ring is provided between the water inlet end of the rotating shaft and the water inlet pipe, and at least one sealing ring is provided between the water outlet end of the rotating shaft and the water delivery pipe.

4. The motor according to claim 2, characterized in that, The sealing assembly includes: The first oil seal sleeve is installed at the water inlet end of the rotating shaft, and a sealing ring is provided on its outer periphery for sealing connection with the water inlet pipe. The second oil seal sleeve is installed at the water outlet end of the rotating shaft; A shaft seal oil seal is provided between the first oil seal sleeve and the rotating shaft, and between the second oil seal sleeve and the rotating shaft.

5. The motor according to claim 1, characterized in that, The rotor and the shaft are integrally connected, and / or the rotor is an outer rotor, and / or the inner diameter of the shaft is not less than 8mm.

6. A water inlet device, characterized in that, include: The motor according to any one of claims 1 to 5; A water inlet pipe is connected to the water inlet end of the rotating shaft; A water supply pipe is connected to the water outlet end of the rotating shaft; A water pump is disposed between the inlet pipe and the rotating shaft, or between the rotating shaft and the delivery pipe.

7. The water inlet device according to claim 6, characterized in that, The inlet pipe is provided with an inlet channel, and the delivery pipe is provided with a delivery channel. At least a portion of the inlet channel, the flow channel, and at least a portion of the delivery channel are coaxially arranged.

8. The water inlet device according to claim 6, characterized in that, The water pump includes an impeller, which is connected to the rotating shaft.

9. A dishwasher, characterized in that, include: The main body has a washing chamber inside; The spray arm is installed inside the washing chamber; According to any one of claims 1 to 5, the water supply pipe of the device is the spray arm, and the spray arm is connected to the water outlet end of the rotating shaft.

10. The dishwasher according to claim 9, characterized in that, A water cup is provided inside the main body, and the water cup is located at the bottom of the washing chamber. The motor and the bottom of the water cup are sealed together. Alternatively, the main body may have an inner liner, and the motor and the inner liner may be sealed together.

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