Spray arm assembly and dishwasher

Abstract

The utility model discloses a kind of spray arm assembly and dishwasher, spray arm assembly includes: spray arm main body, spray arm main body has flow passage and water outlet, flow passage is communicated with water outlet;Spray arm sleeve body, spray arm sleeve body is sleeved in spray arm main body, spray arm sleeve body has multiple water spraying areas arranged spaced apart along its own circumference, spray arm sleeve body is rotatable relative to spray arm main body, so that water outlet is selectively opposite to multiple water spraying areas, water spraying area is equipped with water spraying structure, and the water spraying structure of at least two water spraying areas is different.Spray arm assembly according to the utility model embodiment, by rotating spray arm sleeve body, so that the water outlet of spray arm main body is selectively opposite to multiple water spraying areas of spray arm sleeve body, and the water spraying structure of at least two water spraying areas is different, can change the jet range, jet intensity, water flow density etc. of spray arm assembly water outlet, so that spray arm assembly sprays from more angles, with multiple water spraying forms washes tableware, and the cleaning effect of tableware is better, beneficial to meet the cleaning demand of user to different scene.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher technology, and more specifically, to a spray arm assembly and a dishwasher. Background Technology

[0002] As living standards improve, dishwashers, which free up our hands, are gradually becoming a standard feature of quality living. Compared with traditional hand washing, dishwashers have advantages such as better cleaning, sterilization, water saving, and labor saving. Household dishwashers generally use a spray-type washing method. Driven by a motor, water flows through rotating spray arms to rinse the surface of the dishes. The cleaning effect is closely related to the design of the spray arms.

[0003] In related technologies, the water spraying structure of the spray arm is fixed, resulting in a single spraying range. This causes the spray arm to always spray and rinse the dishes in the same direction, which may leave many washing dead corners that the washing water cannot reach, easily leading to the problem of the dishes not being cleaned properly and poor cleaning effect. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a spray arm assembly that can spray water from more angles and in various spray patterns to rinse tableware, reducing blind spots in washing and achieving better cleaning results.

[0005] Another objective of this invention is to provide a dishwasher having the aforementioned spray arm assembly.

[0006] According to an embodiment of the present invention, a spray arm assembly includes: a spray arm body having a flow channel and a water outlet, the flow channel being connected to the water outlet; and a spray arm sleeve fitted onto the spray arm body, the spray arm sleeve having multiple spray zones spaced apart along its circumference, the spray arm sleeve being rotatable relative to the spray arm body, such that the water outlet is selectively positioned opposite one of the multiple spray zones, each spray zone having a spray structure, and at least two of the spray zones having different spray structures.

[0007] According to the embodiments of the present invention, the spray arm assembly, by rotating the spray arm sleeve, allows the water outlet of the spray arm body to be selectively aligned with multiple spray zones of the spray arm sleeve, and at least two spray zones have different spray structures. This can change the spray range, spray force, and water flow density of the spray arm assembly, enabling the spray arm assembly to spray and rinse tableware from more angles and in various spray patterns, reducing washing dead corners, and achieving better cleaning effect on tableware, thus meeting the cleaning needs of users in different scenarios.

[0008] In addition, the spray arm assembly according to the above embodiments of the present invention may also have the following additional technical features: According to some embodiments of the present invention, the water spray structure includes a plurality of first spray holes, and at least two of the first spray holes in the water spray structures are different in number, size, opening direction, or shape; and / or, the spacing between adjacent first spray holes in at least two of the water spray structures is different; and / or, the arrangement positions of at least two of the water spray structures in the extension direction of the spray arm sleeve are different.

[0009] According to some embodiments of the present invention, the water outlet includes a plurality of sub-water outlets spaced apart along the extension direction of the spray arm body, and the water spray area includes a plurality of sub-water spray areas spaced apart along the extension direction of the spray arm sleeve, wherein the plurality of sub-water outlets are correspondingly opposite to the plurality of sub-water spray areas of the corresponding water spray area.

[0010] According to some embodiments of the present invention, one end of the spray arm sleeve is provided with a connector, one of the spray arm body and the connector is provided with a positioning part and the other is provided with multiple positioning mating parts, wherein the multiple positioning mating parts and the multiple water spraying areas are arranged one-to-one in the circumferential direction of the spray arm sleeve, and when the water outlet is opposite to any of the water spraying areas, the positioning part cooperates with the corresponding positioning mating part.

[0011] According to some embodiments of the present invention, the spray arm body includes a connecting part and an arm part. The arm part is provided with the water outlet and the spray arm sleeve is fitted on it. The connecting part is provided with a mounting flange. One end of the spray arm sleeve is provided with a connector. The connector is provided with a mounting mating part. In the extending direction of the spray arm sleeve, the mounting flange stops on one side of the mounting mating part.

[0012] According to some embodiments of the present invention, the positioning part is located on the side of the mounting flange near the arm portion where the water outlet is provided, and the mounting mating part is provided with an avoidance notch. The avoidance notch is provided in the circumferential direction of the spray arm sleeve in correspondence with the positioning part or the positioning mating part provided on the spray arm body.

[0013] According to some embodiments of the present invention, the spray arm sleeve has an open end near the connecting portion and a closed end away from the connecting portion. The spray arm assembly further includes a sealing member, which is located on the side of the water spray area near the open end and seals the spray arm sleeve to the spray arm body.

[0014] According to some embodiments of the present invention, the rotation axis of the spray arm sleeve is perpendicular to the rotation axis of the spray arm assembly.

[0015] According to some embodiments of the present invention, the spray arm body includes a connecting part and two arm parts located on both sides of the connecting part. One of the two arm parts is provided with the water outlet and fitted with the spray arm sleeve, and the other arm part is provided with a second spray hole.

[0016] The dishwasher according to an embodiment of the present invention includes a spray arm assembly according to an embodiment of the present invention.

[0017] 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

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a partial structural schematic diagram of a dishwasher according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the spray arm assembly according to an embodiment of the present utility model; Figure 3 yes Figure 2 Exploded view; Figure 4 yes Figure 2 The front view; Figure 5 This is a top view of the spray arm assembly according to an embodiment of the present utility model, wherein the water outlet is opposite to the first spray area; Figure 6 yes Figure 5 A bottom view; Figure 7 This is a top view of the spray arm assembly according to an embodiment of the present utility model, wherein the water outlet is opposite to the second spray zone; Figure 8 yes Figure 7 A bottom view; Figure 9 This is a partial structural cross-sectional view of the spray arm assembly according to an embodiment of the present utility model; Figure 10 yes Figure 9 The center circle shows a magnified view of a portion of point A; Figure 11 This is a cross-sectional view of the spray arm assembly according to an embodiment of the present utility model; Figure 12 yes Figure 11 The center circle shows a magnified view of a portion at point B. Figure 13 This is a side view of the connector according to an embodiment of the present utility model.

[0019] Figure label: Dishwasher 1000; Dish rack assembly 200; Upper spray arm hose 300; Lower spray arm assembly 400; Inner hose assembly 500; Motor 600; Spray arm assembly 100; Spray arm body 10; flow channel 11; water outlet 12; sub-water outlet 121; positioning part 13; mounting flange 14; connecting part 151; arm part 152; Spray arm sleeve 20; spray area 21; spray structure 211; first spray hole 212; sub-spray area 213; first spray area 214; second spray area 215; positioning mating part 22; installation mating part 23; clearance notch 231; open end 241; closed end 242; connector 25; Seal 30; Upper cover plate 41; Second spray hole 411; Nut 42; Gasket 43; Clamp 44; Lower cover plate 45; The rotation axis F1 of the spray arm sleeve 20; the rotation axis F2 of the spray arm assembly 100. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] In the description of this utility model, "first feature" and "second feature" may include one or more of the features, "multiple" means two or more, "first feature above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them, and "first feature above", "above" and "over" the second feature may include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0023] The spray arm assembly 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings, such as... Figure 1 As shown, the spray arm assembly 100 can be used in a dishwasher 1000.

[0024] Reference Figures 1-13 As shown, the spray arm assembly 100 according to an embodiment of the present invention may include a spray arm body 10 and a spray arm sleeve 20.

[0025] Specifically, the spray arm body 10 has a flow channel 11 and a water outlet 12, with the flow channel 11 communicating with the water outlet 12. A spray arm sleeve 20 is fitted onto the spray arm body 10, and the spray arm sleeve 20 has multiple spray zones 21 spaced apart along its circumference. For example, in some embodiments, such as... Figures 1-8 As shown, the multiple water spray zones 21 include a first water spray zone 214 and a second water spray zone 215, which are arranged at intervals around an axis extending in the left-right direction. The spray arm assembly 100 can be supplied with liquids such as water and cleaning agents according to user needs. For ease of understanding, the following description takes the supply of water to the flow channel 11 as an example.

[0026] The spray arm sleeve 20 is rotatable relative to the spray arm body 10, allowing the water outlet 12 to be selectively aligned with one of the multiple spray zones 21. For example, in some embodiments, in such... Figures 2-6 In the first gear position shown, the water outlet 12 is opposite to the first spray zone 214; in the case of... Figures 7-8 In the second position shown, the water outlet 12 is opposite to the second spray zone 215. The spray zone 21 is equipped with a spray structure 211, which can communicate with the outside world. Here, the outside world refers to the area outside the spray arm assembly 100, such as the area where tableware is placed. This allows water in the flow channel 11 to be sprayed onto the tableware through the water outlet 12 and the spray structure 211 of the spray zone 21 opposite to the water outlet 12 to rinse the tableware. The spray structure 211 may include at least one of the following: a spray hole, a slit, a nozzle, etc., to spray water to the outside world.

[0027] The water spray structures 211 of at least two water spray zones 21 are different. For example, at least one of the dimensions, shapes, water outlet directions, etc. of the water spray structures 211 of at least two water spray zones 21 is different, so that the range and impact force of the water sprayed by the different water spray structures 211 are different.

[0028] For example, in some specific embodiments, such as Figures 2-8 As shown, the water spray structure 211 of the first water spray zone 214 includes 54 first spray holes 212 with a small minimum spacing between adjacent first spray holes 212, while the water spray structure 211 of the second water spray zone 215 includes 4 first spray holes 212 with a larger minimum spacing between adjacent first spray holes 212. Figures 2-6In the first gear position shown, the water outlet 12 is opposite to the first spray area 214, where the first spray holes 212 are densely distributed. After a certain amount of water is introduced into the spray arm assembly 100, it is sprayed out through multiple first spray holes 212. The impact force of the sprayed water is relatively small, and the water flow is relatively dense, which can be used to clean fragile tableware such as glass cups. Figures 7-8 In the second gear position shown, the water outlet 12 is opposite to the second spray area 215, which is sparsely distributed with the first spray holes 212. After a certain amount of water is introduced into the spray arm assembly 100, it is sprayed out through multiple first spray holes 212. The impact force of the sprayed water flow is relatively large, which can be used to clean tableware with stubborn residual stains. This increases the water output mode of the spray arm assembly 100, such as the spray force and the density of the water flow, which is conducive to meeting the user's cleaning needs for different tableware.

[0029] In some specific embodiments, when the spray arm assembly 100 is stationary, the first spray hole 212 at the spray structure 211 of one spray area 21 opens upward and obliquely forward, while the first spray hole 212 at the spray structure 211 of the other spray area 21 opens upward and obliquely backward. This allows the water outlet 12 to spray water in different directions when it is opposite to different spray areas 21, increasing the spray range of the spray arm assembly 100, which helps to reduce washing dead corners and has a good cleaning effect on tableware.

[0030] Users can rotate the spray arm sleeve 20 as needed (it can be rotated manually or with a tool) to align the water outlet 12 with different spray zones 21, thereby changing the spray pattern and angle of the spray arm assembly 100 to meet various user needs. For example, depending on the shape, material, and degree of soiling of the dishes being washed, the appropriate spray pattern and angle can be selected by rotating the spray arm sleeve 20 to achieve a more reasonable washing effect.

[0031] According to the embodiment of the present utility model, the spray arm assembly 100, by rotating the spray arm sleeve 20, allows the water outlet 12 of the spray arm body 10 to be selectively opposite to one of the multiple spray areas 21 of the spray arm sleeve 20, and at least two spray areas 21 have different spray structures 211. This can change the spray range, spray force, and water flow density of the spray arm assembly 100, so that the spray arm assembly 100 can spray and rinse tableware from more angles and in various spray patterns, reducing washing dead corners, and achieving better cleaning effect on tableware, which is conducive to meeting the user's cleaning needs in different scenarios.

[0032] The water outlet 12 can be located on the upper side, lower side, or other areas of the spray arm body 10. For example, in some embodiments, such as... Figure 3 As shown, the water outlet 12 is located on the upper side of the spray arm body 10, so that the spray arm assembly 100 sprays water upward. When a certain amount of water is supplied to the spray arm assembly 100, the spray arm assembly 400 sprays water to rinse the tableware for a longer time, with a better cleaning effect. The amount of water required to clean the tableware is less, and the operating cost is lower.

[0033] In some embodiments of this utility model, such as Figures 2-8 As shown, the water outlet 12 includes a direction extending along the body of the spray arm 10 (e.g., Figures 2-8 Multiple sub-outlets 121 are spaced apart in the left-right direction (as shown), and the water spray area 21 includes a plurality of sub-outlets 121 arranged along the extension direction of the spray arm sleeve 20 (e.g., along the left-right direction). Figures 2-8 Multiple sub-spray zones 213 are arranged at intervals in the left-right direction (as shown). Among them, multiple sub-outlets 121 are corresponding to the multiple sub-spray zones 213 of the corresponding spray zone 21.

[0034] By further dividing each spray zone 21 into multiple sub-spray zones 213 opposite to the outlet 12, water can be sprayed outward from multiple areas simultaneously by the spray arm assembly 100 to rinse different parts of the tableware, increasing the spray range of the spray arm assembly 100 and achieving a wider cleaning range for the tableware, resulting in better cleaning effect. Furthermore, the outlet 12 is also divided into zones, so that when the outlet 12 is opposite to a spray zone 21, multiple sub-outlets 121 correspond one-to-one with the multiple sub-spray zones 213 of that spray zone 21. This fully utilizes the water entering the spray arm assembly 100, ensuring that more water is sprayed out from the sub-spray zones 213 and less is wasted by spraying into the space between adjacent sub-spray zones 213. This increases the spray range and spray distance of the spray arm assembly 100 with a fixed water volume, improving the cleaning effect on the tableware.

[0035] In some embodiments of this utility model, such as Figures 1-11 As shown, the water spray structure 211 includes a plurality of first spray holes 212, and the number of first spray holes 212 of at least two water spray structures 211 is different, that is, the number of first spray holes 212 of each of the at least two water spray structures 211 is not exactly the same.

[0036] The smaller number of first nozzles 212 reduces the water outlet resistance of the spray arm assembly 100, increasing the water volume and pressure allocated to each first nozzle 212. This results in a faster water flow, longer range, and stronger impact from each first nozzle 212. Positioning the outlet 12 opposite the water spray structure 211 with its smaller number of first nozzles 212 allows for use in scenarios requiring strong rinsing, such as removing stubborn stains.

[0037] The large number of first spray holes 212 increases the water outlet resistance of the spray arm assembly 100, reducing the water volume and pressure allocated to each first spray hole 212. This results in a slower water flow velocity, shorter range, and gentler impact from each first spray hole 212. Furthermore, the large number of water jets from multiple first spray holes 212 provides a larger coverage area and spray range, effectively cleaning hard-to-reach areas and improving cleaning performance. Positioning the water outlet 12 opposite the spray structure 211 with its large number of first spray holes 212 allows for applications requiring gentle impact and comprehensive coverage of tableware, such as rinsing foam or cleaning fragile tableware. For example, in some specific embodiments, such as... Figures 1-11 As shown, the water spray structure 211 of the first water spray zone 214 includes 54 first spray holes 212, and the water spray structure 211 of the second water spray zone 215 includes 4 first spray holes 212.

[0038] Therefore, by rotating the spray arm sleeve 20, the water outlet 12 is positioned opposite the water spray structure 211 with a different number of first spray holes 212, which can meet the user's cleaning needs for different scenarios.

[0039] In some specific embodiments, such as Figures 2-8 As shown, there are multiple water spray zones 21, each water spray zone 21 includes a water spray structure 211, the water spray structure 211 includes multiple first spray holes 212, and each water spray zone 21 also includes multiple sub-water spray zones 213, at least two sub-water spray zones 213 have different numbers of first spray holes 212 in their water spray structures 211.

[0040] In some embodiments, such as Figures 1-11 As shown, the water spray structure 211 includes a plurality of first spray holes 212. At least two water spray structures 211 have first spray holes 212 with different sizes; that is, the sizes of the first spray holes 212 included in each of the at least two water spray structures 211 are not entirely the same. In embodiments where the first spray hole 212 is a circular hole, the size here refers to the inner diameter of the first spray hole 212. In embodiments where the first spray hole 212 is a rectangular hole, an irregularly shaped hole, or a hole of other shapes, the size here can be understood as the area of ​​the first spray hole 212.

[0041] The larger size of the first nozzle 212 results in a larger water flow rate and stronger water impact force, and the nozzle 212 is less prone to clogging by contaminants. Positioning the outlet 12 opposite the larger nozzle 212 allows for applications requiring strong rinsing, such as removing stubborn stains. Conversely, a smaller size of the first nozzle 212 results in a faster water flow rate and gentler water impact force. Positioning the outlet 12 opposite the smaller nozzle 212 allows for applications requiring gentler impact, such as washing fragile tableware. For example, in some specific embodiments, such as... Figures 1-11As shown, the first nozzle 212 of the water spray structure 211 in the first water spray zone 214 is smaller, while the first nozzle 212 of the water spray structure 211 in the second water spray zone 215 is larger.

[0042] Therefore, by rotating the spray arm sleeve 20, the water outlet 12 is aligned with the water spray structure 211, which has a different size from the first spray hole 212, thus meeting the user's cleaning needs for different scenarios.

[0043] In some specific embodiments, such as Figures 2-8 As shown, there are multiple water spray zones 21, each water spray zone 21 includes a water spray structure 211, the water spray structure 211 includes multiple first spray holes 212, and each water spray zone 21 also includes multiple sub-water spray zones 213, at least two sub-water spray zones 213 have different sizes of the first spray holes 212 of the water spray structure 211.

[0044] In some embodiments, the water spray structure 211 includes a plurality of first spray holes 212, and the opening directions of the first spray holes 212 of at least two water spray structures 211 are different (not shown in the figures), that is, the opening directions of the first spray holes 212 included in each of the at least two water spray structures 211 are not exactly the same. Water flows outward through the first spray holes 212 along the opening direction of the first spray holes 212. The opening directions of the first spray holes 212 of different water spray structures 211 can be adjusted to obtain first spray holes 212 with multiple opening directions. By rotating the spray arm sleeve 20, the water outlet 12 is made to face the first spray holes 212 with different opening directions, which can increase the spray range of the spray arm assembly 100, which helps to reduce washing dead corners, achieve all-round cleaning of tableware, and has a good cleaning effect on tableware.

[0045] In some specific embodiments, there are multiple water spray zones 21, each water spray zone 21 includes a water spray structure 211, the water spray structure 211 includes multiple first spray holes 212, and each water spray zone 21 also includes multiple sub-water spray zones 213, and the opening directions of the first spray holes 212 of the water spray structures 211 of at least two sub-water spray zones 213 are different.

[0046] In some embodiments, the water spray structure 211 includes a plurality of first nozzles 212, and the shapes of the first nozzles 212 of at least two water spray structures 211 are different (not shown in the figures), that is, the shapes of the first nozzles 212 included in each of the at least two water spray structures 211 are not exactly the same. The shape of the first nozzle 212 can be circular, fan-shaped, flat slit, spiral, rectangular, trapezoidal, irregular, or other shapes.

[0047] For example, if the outlet 12 is aligned with the circular first nozzle 212, the water flow is ejected outwards through the circular first nozzle 212 as a solid water column. This provides a longer range and more concentrated impact, making it suitable for removing stubborn stains. Furthermore, the circular first nozzle 212 is easy to manufacture and has a lower cost. Alternatively, if the outlet 12 is aligned with the flat slit first nozzle 212, the water flow is ejected outwards through the flat slit first nozzle 212 as a flat, fan-shaped thin water curtain. This provides a larger coverage area, allowing for the rinsing of a wider range of tableware at once, resulting in high cleaning efficiency. Or, if the outlet 12 is aligned with the spiral first nozzle 212, the water flow is ejected outwards through the spiral first nozzle 212 as a rotating, hollow water jet. This rotating water jet better envelops the tableware, cleaning it from multiple angles, providing a wider coverage area, and a gentler impact, making it suitable for cleaning fragile tableware or delicate items. The first nozzle 212 can also have other shapes, which will not be elaborated upon here.

[0048] By rotating the spray arm sleeve 20, the water outlet 12 is aligned with the first spray hole 212 of different shapes, which can meet the user's cleaning needs for different scenarios.

[0049] In some specific embodiments, there are multiple water spray zones 21, each water spray zone 21 includes a water spray structure 211, the water spray structure 211 includes multiple first spray holes 212, and each water spray zone 21 also includes multiple sub-water spray zones 213, and the first spray holes 212 of the water spray structures 211 of at least two sub-water spray zones 213 have different shapes.

[0050] In some embodiments, such as Figures 1-11 As shown, the water spray structure 211 includes multiple first spray holes 212. The spacing between adjacent first spray holes 212 in at least two water spray structures 211 is different, meaning the spacing between adjacent first spray holes 212 in at least two water spray structures 211 is not exactly the same. A larger spacing between adjacent first spray holes 212 in the water spray structure 211 results in a stronger water flow impact force, allowing the outlet 12 to face the water spray structure 211 with a larger spacing between adjacent first spray holes 212. This can be used in scenarios requiring strong rinsing, such as for removing stubborn stains. A smaller spacing between adjacent first spray holes 212 in the water spray structure 211 results in a denser water flow with a gentler impact force, a wider cleaning range, and helps reduce blind spots in the washing process. By positioning the water outlet 12 opposite the adjacent first spray hole 212 with a small distance between them, the water spray structure 211 can be used in scenarios requiring gentle impact, such as for cleaning fragile tableware. For example, in some specific embodiments, such as Figures 1-11 As shown, the minimum distance between adjacent first nozzles 212 in the water spray structure 211 of the first water spray zone 214 is small, while the minimum distance between adjacent first nozzles 212 in the water spray structure 211 of the second water spray zone 215 is large.

[0051] Therefore, by rotating the spray arm sleeve 20, the water outlet 12 is aligned with the water spray structure 211, which has a different size from the first spray hole 212, thus meeting the user's cleaning needs for different scenarios.

[0052] In some specific embodiments, such as Figures 2-8 As shown, there are multiple water spray zones 21, each water spray zone 21 includes a water spray structure 211, the water spray structure 211 includes multiple first spray holes 212, and each water spray zone 21 also includes multiple sub-water spray zones 213, and the spacing between adjacent first spray holes 212 in the water spray structures 211 of at least two sub-water spray zones 213 is different.

[0053] In some embodiments, the water spray structure 211 includes a plurality of first spray holes 212, and at least two water spray structures 211 are located in the extending direction of the spray arm sleeve 20 (e.g., Figures 2-8 The positions of the spray structures 211 in the extension direction of the spray arm sleeve 20 are not completely the same, meaning that the positions of at least two spray structures 211 in the extension direction of the spray arm sleeve 20 are not completely the same. Water flows outward through the first spray hole 212. By adjusting the positions of different spray structures 211 in the extension direction of the spray arm sleeve 20, multiple first spray holes 212 with different positions can be obtained. By rotating the spray arm sleeve 20, the water outlet 12 is made to face the first spray holes 212 with different positions, water can be sprayed outward from different positions in the extension direction of the spray arm sleeve 20, thereby increasing the spray range of the spray arm assembly 100, reducing washing dead corners, achieving all-round cleaning of tableware, and providing a good cleaning effect.

[0054] In some specific embodiments, there are multiple water spray zones 21, each water spray zone 21 includes a water spray structure 211, the water spray structure 211 includes multiple first spray holes 212, each water spray zone 21 also includes multiple sub-water spray zones 213, and the water spray structures 211 of at least two sub-water spray zones 213 are positioned differently in the extension direction of the spray arm sleeve 20.

[0055] In some embodiments of this utility model, such as Figures 2-12 As shown, one end of the spray arm sleeve 20 (e.g.) Figures 2-12 The right end of the spray arm sleeve 20 is provided with a connector 25. The spray arm sleeve 20 and the connector 25 can be an integral part, such as integral molding or fixedly connected by welding, riveting or other connection methods. The spray arm sleeve 20 and the connector 25 can also be separate parts, such as connected by snap-fit ​​or bolt connection methods.

[0056] One of the spray arm body 10 and the connector 25 is provided with a positioning part 13 and the other is provided with multiple positioning mating parts 22. The positioning part 13 can be a positioning post, positioning hole, positioning buckle, magnetic attraction component, etc., and the positioning mating part 22 can be a positioning hole, positioning post, positioning buckle mating component, magnetic attraction component, etc. that mates with the positioning part 13.

[0057] In this configuration, multiple positioning and mating parts 22 are arranged one-to-one with multiple water spray zones 21 in the circumferential direction of the spray arm sleeve 20. When the water outlet 12 is opposite to any one of the water spray zones 21, the positioning part 13 engages with the corresponding positioning and mating part 22. For example, in some embodiments, there are two positioning and mating parts 22 and two water spray zones 21. When the positioning part 13 engages with one of the positioning and mating parts 22, the water outlet 12 is opposite to one of the water spray zones 21; when the positioning part 13 engages with the other positioning and mating part 22, the water outlet 12 is opposite to the other water spray zone 21.

[0058] By rotating the spray arm sleeve 20, the positioning mating part 22 that cooperates with the positioning part 13 can be changed, and the water spraying area 21 opposite to the water outlet 12 can be changed. When the positioning part 13 cooperates with any positioning mating part 22, the state of the water outlet 12 being opposite to the corresponding water spraying area 21 can be locked, making the operation of switching the water outlet 12 with different water spraying areas 21 more precise and convenient.

[0059] There can be one or more positioning parts 13. For example, in some embodiments, there is only one positioning part 13. By rotating the spray arm sleeve 20 to switch the cooperation relationship between the positioning part 13 and multiple positioning mating parts 22, the relative relationship between the water outlet 12 and multiple spray zones 21 can be switched. The structure is relatively simple, easy to manufacture, and has a low cost.

[0060] For example, in some embodiments, such as Figure 3 and Figures 9-12 As shown, there are multiple positioning parts 13, each corresponding to a different positioning mating part 22. Rotating the spray arm sleeve 20 switches the mating relationship between each positioning part 13 and the multiple positioning mating parts 22, thus switching the relative relationship between the water outlet 12 and the multiple spray zones 21. This also increases the contact area between the spray arm sleeve 20 and the spray arm body 10, improving the stability of the rotatable connection between the spray arm sleeve 20 and the spray arm body 10. For example, the multiple positioning parts 13 include a first positioning part and a second positioning part, and the multiple positioning mating parts 22 include a first positioning mating part and a second positioning mating part. Before switching, the first positioning part mates with the first positioning mating part, the second positioning part mates with the second positioning mating part, and the water outlet 12 is opposite to the first spray zone 214. After switching, the first positioning part mates with the second positioning mating part, and the second positioning part mates with the first positioning mating part, and the water outlet 12 is opposite to the second spray zone 215.

[0061] In some embodiments, one of the spray arm body 10 and the spray arm sleeve 20 is provided with a guide protrusion and the other is provided with an annular guide groove. During the rotation of the spray arm sleeve 20, the cooperation between the guide groove and the guide protrusion can guide the cooperation between the positioning part 13 and the positioning mating part 22, so that the guide part can switch to cooperate with another guide mating part more quickly, thereby improving the switching efficiency of the spray arm assembly 100 in switching the water outlet 12 to be opposite to multiple spray areas 21.

[0062] In some embodiments of this utility model, such as Figures 9-10 As shown, the main body 10 of the spray arm includes a connecting part 151 and an arm 152, which are connected. The connecting part 151 may be provided with a water inlet for connecting to a water inlet pipe. There may be one or more arms 152, at least one of which is provided with a water outlet 12 and fitted with a spray arm sleeve 20, enabling at least one arm 152 to discharge water from different spray zones 21 to meet the user's cleaning needs in different scenarios. Depending on user needs, one arm 152 may be provided with a water outlet 12 and fitted with a spray arm sleeve 20, or multiple arms 152 may all be provided with water outlets 12 and fitted with spray arm sleeves 20.

[0063] The connecting part 151 is provided with a mounting flange 14, and one end of the spray arm sleeve 20 is provided with a connector 25, and the connector 25 is provided with a mounting mating part 23. The mounting flange 14 can be a snap-fit, a mounting protrusion, or other structure, and the mounting mating part 23 can be a snap-fit ​​mating part that mates with the positioning part 13, a mounting groove, or other structure.

[0064] In the extending direction of the spray arm sleeve 20, the mounting flange 14 stops on one side of the mounting mating part 23, for example... Figures 9-10 The mounting flange 14 shown stops on the left side of the mounting mating part 23 to install the spray arm sleeve 20 onto the spray arm body 10. The relationship between the mounting flange 14 and the mounting mating part 23 allows the spray arm sleeve 20 to be rotatably installed onto the spray arm body 10, preventing the spray arm sleeve 20 from shaking or even falling off, thus improving the installation stability of the spray arm sleeve 20.

[0065] In some embodiments, such as Figures 9-10 As shown, at least one of the mounting flange 14 and the mounting mating part 23 is annular, for example... Figures 9-10 The mounting flange 14 shown is annular, which facilitates the rotation of the spray arm sleeve 20 relative to the spray arm body 10, making it less likely for the spray arm sleeve 20 to fall off during the rotation process, and improving the stability of the spray arm assembly 100 when switching the water outlet 12 to be opposite to multiple spray zones 21.

[0066] In embodiments including the positioning part 13 and the positioning mating part 22, such as Figures 9-10As shown, the engagement of the mounting flange 14 and the mounting mating part 23 can guide the engagement of the positioning part 13 and the positioning mating part 22, enabling the guiding part to switch to engage with another guiding mating part more quickly, thereby improving the switching efficiency of the spray arm assembly 100 in switching the water outlet 12 to be opposite to multiple spray zones 21.

[0067] In some embodiments, such as Figures 9-10 and Figure 13 As shown, the positioning part 13 is located on the side of the mounting flange 14 near the arm 152 where the water outlet 12 is located. This prevents contaminants inside the dishwasher 1000 from directly impacting the positioning part 13 and causing it to jam. This helps protect the positioning part 13 and the positioning mating part 22. For example... Figures 9-10 The positioning part 13 shown is located on the left side of the mounting flange 14. The mounting mating part 23 is provided with an avoidance notch 231, that is, the mounting mating part 23 is not annular in shape, for example... Figures 9-10 and Figure 13 As shown, multiple mounting parts 23 are arranged at intervals along the circumference of the spray arm sleeve 20, and the space between adjacent mounting parts 23 is the clearance gap 231.

[0068] The clearance notch 231 is provided in the circumferential direction of the spray arm sleeve 20, corresponding to the positioning part 13 or the positioning mating part 22 provided on the spray arm body 10. In embodiments where the spray arm body 10 has a positioning part 13 and the spray arm sleeve 20 has a positioning mating part 22, such as Figures 9-12 As shown, the clearance notch 231 is provided corresponding to the positioning part 13 in the circumferential direction of the spray arm sleeve 20. In embodiments where the spray arm body 10 has a positioning mating part 22 and the spray arm sleeve 20 has a positioning part 13, the clearance notch 231 is provided corresponding to the positioning mating part 22 in the circumferential direction of the spray arm sleeve 20. For ease of understanding, the following explanation uses the example of the clearance notch 231 corresponding to the positioning part 13 in the circumferential direction of the spray arm sleeve 20. Of course, embodiments where the clearance notch 231 corresponds to the positioning mating part 22 in the circumferential direction of the spray arm sleeve 20 can also be obtained based on the following description.

[0069] The clearance notch 231 is provided in the circumferential direction of the spray arm sleeve 20 corresponding to the positioning part 13, so that the installation mating part 23 of the spray arm sleeve 20 can avoid the positioning part 13 of the spray arm body 10 during the process of installing the spray arm sleeve 20 onto the spray arm body 10, making the installation convenient.

[0070] It should be noted that the clearance notch 231 and the positioning part 13 are correspondingly arranged in the circumferential direction of the spray arm sleeve 20, meaning that the clearance notch 231 can be used to avoid the positioning part 13. However, the clearance notch 231 and the positioning part 13 are not necessarily opposite each other in the extension direction of the spray arm sleeve 20. After rotating the spray arm sleeve 20 relative to the spray arm body 10 in the circumferential direction by a certain angle, the clearance notch 231 can avoid the positioning part 13 to install the spray arm sleeve 20. For example, in some embodiments, the number of clearance notches 231 and positioning parts 13 is the same, and the spacing between adjacent clearance notches 231 is equal to the spacing between adjacent positioning parts 13. During the process of installing the spray arm sleeve 20 on the spray arm body 10, rotating the spray arm sleeve 20 in the circumferential direction by a certain angle can make multiple positioning parts 13 correspond one-to-one with multiple clearance notches 231, which facilitates the installation of the spray arm sleeve 20.

[0071] In some embodiments of this utility model, such as Figure 3 and Figures 9-12 As shown, the spray arm sleeve 20 has an open end 241 near the connecting portion 151 and a closed end 242 away from the connecting portion 151. The spray arm assembly 100 also includes a seal 30, which is located on the side of the water spray area 21 near the open end 241 and seals the spray arm sleeve 20 to the spray arm body 10, for example... Figure 3 and Figures 9-12 The seal 30 shown is located on the right side of the water spray area 21.

[0072] The seal 30 seals the gap between the spray arm sleeve 20 and the spray arm body 10, reducing water leakage from between them during the spraying process from the outlet 12 to the spray area 21. This improves the water output of the spray arm assembly 100 at the spray area 21, enhancing the cleaning effect on tableware. Furthermore, the seal 30 increases resistance during the rotation of the spray arm sleeve 20, making the installation of the spray arm sleeve 20 more stable when the outlet 12 is opposite to any spray area 21. It also improves the user's feel when rotating the spray arm sleeve 20 to switch the outlet 12 to other spray areas 21, preventing the outlet 12 from quickly passing adjacent spray areas 21 and facilitating precise switching.

[0073] In other embodiments, both ends of the spray arm sleeve 20 are open ends 241, and the spray arm sleeve 20 and the spray arm body 10 can be sealed and connected by a sealant 30 at both open ends 241.

[0074] In some embodiments, such as Figures 1-8 As shown, an operating protrusion is provided on the outer surface of the end of the spray arm sleeve 20 away from the connecting portion 151. The operating protrusion is located outwards, especially in areas such as... Figure 1In the dishwasher 1000 shown, the operating protrusion is located near the outer side of the dish rack assembly 200, making it easy for the user to rotate the spray arm sleeve 20 via the operating protrusion, thus facilitating operation.

[0075] In some embodiments of this utility model, such as Figures 2-12 As shown, there are 2 to 4 spray zones 21, which are evenly arranged along the circumference of the spray arm sleeve 20. This makes the multiple spray zones 21 more clearly defined, reducing the likelihood of the water outlet 12 being opposite to multiple spray zones 21 simultaneously. It also helps ensure that a single spray zone 21 is opposite to multiple spray zones 21, allowing water to exit from the one opposite to which the spray zone 21 is located. This improves the reliability of water exiting from different spray zones 21 by the spray arm assembly 100, making it easier to meet the cleaning needs of users in different scenarios.

[0076] For example, in some embodiments, such as Figures 2-12 As shown, the multiple water spray zones 21 are arranged in pairs evenly along the circumference, with the included angle between the centers of two adjacent water spray zones 21 being 180°. For example, in some embodiments, the multiple water spray zones 21 are arranged in three evenly along the circumference, with the included angle between the centers of two adjacent water spray zones 21 being 120°. For example, in some embodiments, the multiple water spray zones 21 are arranged in four evenly along the circumference, with the included angle between the centers of two adjacent water spray zones 21 being 90°.

[0077] The rotation axis F1 of the spray arm sleeve 20 intersects the rotation axis F2 of the spray arm assembly 100. For example, in some embodiments, such as Figures 2-12 As shown, the rotation axis F1 of the spray arm sleeve 20 is perpendicular to the rotation axis F2 of the spray arm assembly 100, which can maximize the spray range of the spray arm sleeve 20, reduce washing dead corners, achieve all-round cleaning of tableware, and have a good cleaning effect on tableware.

[0078] In some embodiments, such as Figures 1-12 As shown, the main body 10 of the spray arm includes a connecting part 151 and two arms 152 located on both sides of the connecting part 151. One arm 152 is provided with a water outlet 12 and is fitted with a spray arm sleeve 20, while the other arm 152 is provided with a second spray hole 411 to spray water outward. The arm 152 with the water outlet 12 can selectively spray water from more angles and in various spray patterns to rinse the tableware, while the arm 152 with the second spray hole 411 sprays water outward from a fixed angle to enhance the rinsing effect on specific parts of the tableware. This takes into account the user's needs for rinsing range and rinsing intensity at specific locations, resulting in better cleaning effect and convenient operation.

[0079] like Figure 1As shown, the dishwasher 1000 according to an embodiment of the present invention includes a spray arm assembly 100 according to an embodiment of the present invention. Since the spray arm assembly 100 according to an embodiment of the present invention has the aforementioned beneficial technical effects, the dishwasher 1000 according to an embodiment of the present invention, by rotating the spray arm sleeve 20, allows the water outlet 12 of the spray arm body 10 to be selectively opposite to one of the multiple spray zones 21 of the spray arm sleeve 20, and at least two spray zones 21 have different spray structures 211. This changes the spray range, spray force, and water flow density of the spray arm assembly 100, enabling the spray arm assembly 100 to spray and rinse tableware from more angles and in various spray patterns, reducing washing dead zones, improving the cleaning effect on tableware, and better meeting the user's cleaning needs in different scenarios.

[0080] The following describes in detail, with reference to the accompanying drawings, a specific embodiment of the spray arm assembly 100 and dishwasher 1000 according to the present invention. It is to be understood that the following description is merely illustrative and should not be construed as limiting the present invention.

[0081] like Figures 1-13 As shown, a spray arm assembly 100 according to a specific embodiment of the present invention is used in a dishwasher 1000. The dishwasher 1000 includes a spray arm assembly 100, two dish rack assemblies 200, an upper spray arm water pipe 300, a lower spray arm assembly 400, an inner water pipe assembly 500, and a motor 600. The dish rack assemblies 200 are used to hold tableware. The spray arm assembly 100 is located below the upper dish rack assembly 200, and can spray water upwards to clean the tableware in the upper dish rack assembly 200. The lower spray arm assembly 400 is located below the lower dish rack assembly 200, and can spray water upwards to clean the tableware in the lower dish rack assembly 200. The motor 600 is located in the lower spray arm assembly 400 to directly supply water to the lower spray arm assembly 400. The inner water pipe assembly 500 connects the lower spray arm assembly 400 and the upper spray arm water pipe 300. The upper spray arm water pipe 300 is connected to the spray arm assembly 100. The lower spray arm assembly 400 supplies water to the spray arm assembly 100 through the inner water pipe assembly 500 and the upper spray arm water pipe 300.

[0082] The spray arm assembly 100 includes a spray arm body 10 and a spray arm sleeve 20. The spray arm body 10 has a flow channel 11 and a water outlet 12, and the flow channel 11 communicates with the water outlet 12. The spray arm sleeve 20 is sleeved on the spray arm body 10 and has two spray zones 21 evenly spaced apart along its circumference, namely a first spray zone 214 and a second spray zone 215. The spray arm sleeve 20 is rotatable relative to the spray arm body 10, so that the water outlet 12 is selectively opposite to the first spray zone 214 and the second spray zone 215. The spray zones 21 are provided with spray structures 211, and the spray structures 211 of the first spray zone 214 and the second spray zone 215 are different.

[0083] The water outlet 12 includes two sub-outlets 121 spaced apart along the extension direction of the rotation axis F1 of the spray arm sleeve 20. The first spray zone 214 and the second spray zone 215 each include two sub-spray zones 213 spaced apart along the extension direction of the rotation axis F1 of the spray arm sleeve 20. The two sub-outlets 121 correspond one-to-one with the two sub-spray zones 213 of the corresponding spray zone 21.

[0084] The water spray structure 211 includes a plurality of first spray holes 212. The number of first spray holes 212 in the first water spray area 214 is greater than the number of first spray holes 212 in the second water spray area 215. The size of the first spray holes 212 in the first water spray area 214 is smaller than the size of the first spray holes 212 in the second water spray area 215. The spacing between adjacent first spray holes 212 in the sub-water spray area 213 of the first water spray area 214 is smaller than the spacing between adjacent first spray holes 212 in the sub-water spray area 213 of the first water spray area 214.

[0085] The main body 10 of the spray arm has two positioning parts 13, namely the first positioning part and the second positioning part. The right end of the spray arm sleeve 20 has a connector 25, and the connector 25 has two positioning mating parts 22, namely the first positioning mating part and the second positioning mating part. The two positioning mating parts 22 are correspondingly arranged with the two water spraying areas 21 in the circumferential direction of the spray arm sleeve 20. When the water outlet 12 is opposite to the first water spraying area 214, the first positioning part mates with the first positioning mating part, and the second positioning part mates with the second positioning mating part. When the water outlet 12 is opposite to the second water spraying area 215, the first positioning part mates with the second positioning mating part, and the second positioning part mates with the first positioning mating part.

[0086] The spray arm body 10 is provided with a mounting flange 14, and the connector 25 is provided with a mounting mating part 23. In the extension direction of the rotation axis F1 of the spray arm sleeve 20, the mounting flange 14 stops on the side of the mounting mating part 23 away from the rotation axis F2 of the spray arm assembly 100. The mounting flange 14 is annular. The positioning part 13 is located on the side of the mounting flange 14 away from the rotation axis F2 of the spray arm assembly 100. The mounting mating part 23 is provided with a clearance notch 231, which is correspondingly provided with the positioning part 13 in the circumferential direction of the spray arm sleeve 20. The rotation axis F1 of the spray arm sleeve 20 is perpendicular to the rotation axis F2 of the spray arm assembly 100.

[0087] The spray arm sleeve 20 has an open end 241 near the rotation axis F2 of the spray arm assembly 100 and a closed end 242 away from the rotation axis F2 of the spray arm assembly 100. The spray arm assembly 100 also includes a seal 30, which is located on the side of the water spray area 21 near the open end 241 and seals the spray arm sleeve 20 to the spray arm body 10.

[0088] The main body 10 of the spray arm includes a connecting part 151 and two arms 152 located on both sides of the connecting part 151. One arm 152 is provided with a water outlet 12 and is fitted with a spray arm sleeve 20. The other arm 152 includes an upper cover plate 41 and a lower cover plate 45 welded together in the vertical direction. The upper cover plate 41 is provided with a second spray hole 411. The connecting part 151 includes a nut 42, a washer 43 and a locking block 44.

[0089] By rotating the spray arm sleeve 20, the water outlet 12 is positioned opposite the first spray zone 214. The first spray zone 214 has a denser distribution of first spray holes 212, and these holes are relatively small, resulting in a gentler water flow that is easier to rinse fragile tableware. By rotating the spray arm sleeve 20, the water outlet 12 is positioned opposite the second spray zone 215. The second spray zone 215 has a more dispersed distribution of first spray holes 212, and these holes are larger, resulting in a stronger water flow that is easier to rinse away stubborn impurities. Therefore, by rotating the spray arm sleeve 20, the water outlet 12 can be positioned opposite either the first spray zone 214 or the second spray zone 215, providing two different water flow patterns to meet the user's cleaning needs in different scenarios.

[0090] Other configurations and operations of the spray arm assembly 100 and dishwasher 1000 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0091] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0092] In the description of this specification, the references to terms such as "embodiment," "specific embodiment," and "example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is 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.

[0093] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A spray arm assembly, characterized by include: A spray arm body, the spray arm body having a flow channel and a water outlet, the flow channel being connected to the water outlet; A spray arm sleeve is fitted onto the spray arm body. The spray arm sleeve has multiple water spray zones arranged at intervals along its circumference. The spray arm sleeve is rotatable relative to the spray arm body, so that the water outlet is selectively opposite to one of the multiple water spray zones. Each water spray zone is provided with a water spray structure, and the water spray structures of at least two of the water spray zones are different.

2. The spray arm assembly of claim 1, wherein, The water spray structure includes multiple first spray holes. At least one of the following is different in terms of the number, size, opening direction, and shape of the first spray holes in at least two of the water spray structures: and / or, the spacing between adjacent first spray holes in at least two of the water spray structures is different; And / or, at least two of the water spray structures are positioned differently in the extension direction of the spray arm sleeve.

3. The spray arm assembly of claim 1, wherein, The water outlet includes a plurality of sub-water outlets spaced apart along the extension direction of the main body of the spray arm, and the water spray area includes a plurality of sub-water spray areas spaced apart along the extension direction of the sleeve of the spray arm, wherein the plurality of sub-water outlets are correspondingly opposite to the plurality of sub-water spray areas of the corresponding water spray area.

4. The spray arm assembly of claim 1, wherein, One end of the spray arm sleeve is provided with a connector. One of the spray arm body and the connector is provided with a positioning part, and the other is provided with multiple positioning mating parts. Multiple positioning and mating parts and multiple water spraying areas are arranged one-to-one in the circumferential direction of the spray arm sleeve. When the water outlet is opposite to any of the water spraying areas, the positioning part mates with the corresponding positioning and mating part.

5. The spray arm assembly of claim 4, wherein, The main body of the spray arm includes a connecting part and an arm part. The arm part is provided with the water outlet and the spray arm sleeve is fitted on it. The connecting part is provided with a mounting flange. One end of the spray arm sleeve is provided with a connector. The connector is provided with a mounting mating part. In the extending direction of the spray arm sleeve, the mounting flange stops on one side of the mounting mating part.

6. The spray arm assembly according to claim 5, characterized in that, The positioning part is located on the side of the mounting flange near the arm portion where the water outlet is located. The mounting mating part is provided with an avoidance notch, which is provided in the circumferential direction of the spray arm sleeve in correspondence with the positioning part or the positioning mating part provided on the spray arm body.

7. The spray arm assembly of claim 5, wherein, The spray arm sleeve has an open end near the connecting portion and a closed end away from the connecting portion. The spray arm assembly also includes a seal, which is located on the side of the water spray area near the open end and seals the spray arm sleeve to the spray arm body.

8. The spray arm assembly of claim 1, wherein, The rotation axis of the spray arm sleeve is perpendicular to the rotation axis of the spray arm assembly.

9. The spray arm assembly of any one of claims 1-8, wherein, The main body of the spray arm includes a connecting part and two arm parts located on both sides of the connecting part. One of the two arm parts is provided with the water outlet and is fitted with the spray arm sleeve, and the other arm part is provided with a second spray hole.

10. A dishwasher, characterized in that Includes the spray arm assembly according to any one of claims 1-9.

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