Spraying arm assembly and dish washing machine

Abstract

The utility model relates to a gushing arm assembly and a dish-washing machine, the gushing arm assembly comprises a gushing arm main body, the gushing arm main body is provided with a spraying hole; the guide part is rotatably arranged on the spraying arm main body, the guide part forms a flow guide surface, the flow guide surface is opposite to the spraying hole, and the flow guide surface is configured to abut against water flow sprayed out of the spraying hole so as to change the spraying direction of the water flow and can rotate around the axis of the spraying hole under the driving of the water flow so as to drive the water flow to be rotationally sprayed. According to the spraying arm assembly provided by the invention, the rotatable guide part is arranged on the spraying arm main body, and the flow guide surface arranged in the water outlet direction of the spraying hole is formed on the guide part, so that when the spraying hole sprays a water column, the flow guide surface is propped against the water column and enables the spraying angle of the water column to change; in addition, the flow guide face rotates automatically under the counter-acting force generated by water column impact, the flow guide face rotates around the axis of the spray hole under the driving of water flow, and therefore the water flow is driven to rotate and spray, the coverage area of the cleaning area of the spray hole is increased, and the cleaning effect of the dish-washing machine is greatly enhanced.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a spray arm assembly and a dishwasher. Background Technology

[0002] Dishwashers work by using rotating spray arms to spray water jets onto the dishes, thus cleaning them. However, due to the unpredictable shape and level of soiling of the dishes in actual use, the current common solution is to add zone spray arms in specific locations to provide intensive cleaning for certain types of dishes, such as deep cups or heavily soiled items. Zone spray arms and nozzles are generally fixed, resulting in limited coverage area. Furthermore, the angle of each nozzle is fixed, and the water jets are mostly circular or square, matching the shape of the nozzles, thus limiting the cleaning area. Utility Model Content

[0003] Therefore, it is necessary to provide a spray arm assembly and a dishwasher to address the problem that the spray nozzles of the area wash spray arm in the prior art are generally fixed, resulting in a small cleaning area that can be covered by the sprayed water jet.

[0004] A spray arm assembly includes: a spray arm body having a spray hole; and a guide member rotatably disposed on the spray arm body, the guide member forming a flow guiding surface, the flow guiding surface being disposed opposite to the spray hole, the flow guiding surface being configured to abut against the water flow ejected from the spray hole to change the direction of the water flow, and being able to rotate around the axis of the spray hole under the drive of the water flow to drive the water flow to rotate and spray.

[0005] This application provides a spray arm assembly. The main body of the spray arm is provided with a rotatable guide. A guide surface is formed on the guide surface in the direction of water outlet of the spray hole. When the spray hole sprays out a water column, the guide surface will come into contact with the water column and cause the spray angle of the water column to change. In addition, the guide surface will rotate under the reaction force generated by the impact of the water column. The guide surface rotates around the axis of the spray hole under the drive of the water flow, thereby driving the water flow to rotate and spray. This increases the cleaning area coverage of the spray hole, greatly enhances the cleaning effect of the dishwasher, and improves the user experience.

[0006] In one embodiment, the guide surface includes an abutment section and a guide section. The abutment section intersects the axis of the nozzle to abut against the water flow ejected from the nozzle. One end of the guide section is connected to the abutment section, and the other end of the guide section extends away from the axis of the nozzle. By employing the above structure, the guide surface includes an abutment section and a guide section connected sequentially along the water flow direction. When the nozzle ejects a water column, the abutment section abuts against the water column, causing the water column to continue moving along the guide section. Thus, guided by the guide section, the direction and shape of the water column can be changed, and the water column can be rotated and ejected as the guide section rotates.

[0007] In one embodiment, the guide surface is an arc-shaped structure that is concave away from the nozzle. By forming an arc-shaped structure, the water column will spread into a sheet-like water column under the guidance of the guide surface after colliding with it, thereby increasing the water column spray area and further enhancing the cleaning effect. Moreover, the force generated by the impact between the water column ejected from the nozzle and the guide surface can be partially decomposed into a horizontal force that drives the guide surface to rotate, making the self-rotation of the guide surface smoother.

[0008] In one embodiment, the horizontal height of the guide section gradually increases in the direction away from the axis of the nozzle. This allows the guide section to extend more smoothly in line with the water flow direction, avoiding excessive energy loss from the water flow.

[0009] In one embodiment, the guide surface has a surrounding edge on each side, and the two surrounding edges cooperate with the guide surface to form a water collection trough. By using the above structure to form a water collection trough, when the water flow from the nozzle is dispersed by the contact section, it can be contained and concentrated in the water collection trough by the surrounding edges, thereby avoiding water waste and allowing more concentrated water to be sprayed outward from the opening side of the water collection trough, thereby improving the cleaning effect.

[0010] In one embodiment, the main body of the spray arm includes an arm body and a limiting member. The limiting member is disposed on the arm body, and the limiting member and the arm body cooperate to form a limiting space. The guide member includes a flow guiding part and a rotating seat. The flow guiding part is disposed on the rotating seat, and the flow guiding surface is formed on the side of the flow guiding part near the spray hole. The rotating seat is movably disposed in the limiting space, and the opposite sides of the rotating seat abut against the limiting member and the arm body, respectively. The rotating seat can rotate relative to the arm body, so that the flow guiding part can rotate around the axis of the spray hole under the drive of the water flow sprayed from the spray hole. By adopting the above structure, the rotating seat is movably disposed in the limiting space formed by the cooperation of the limiting member and the arm body. Thus, when the flow guiding part is subjected to the reaction force generated by the impact of the water column, the rotating seat will rotate relative to the arm body, causing the flow guiding part to rotate around the axis of the spray hole. By limiting the two end walls of the rotating seat through the limiting member and the arm body, the guide member can be stably disposed and will not be washed away or detached by the water column sprayed from the spray hole.

[0011] In one embodiment, the limiting member includes a rotating shaft and a limiting rib. The arm body has a water outlet, one end of the rotating shaft is adapted to be inserted into the water outlet, the rotating shaft has the spray hole, the water inlet end of the spray hole is connected to the water outlet, the rotating seat is rotatably sleeved on the outside of the rotating shaft, and the limiting rib is disposed on the other end of the rotating shaft. The limiting rib, the rotating shaft, and the arm body cooperate to form the limiting space, and the opposite sides of the rotating seat abut against the limiting rib and the arm body, respectively. By adopting the above structure, the rotating shaft facilitates the positioning and installation of the rotating seat, and the spray hole is disposed on the rotating shaft. When the rotating seat and the rotating shaft are adapted and installed, it can be ensured that the guide section is aligned with the spray hole, ensuring that the air contact section intersects with the axis of the spray hole and abuts against the water flow sprayed from the spray hole to achieve a guiding effect.

[0012] In one embodiment, the outer peripheral wall of the rotating shaft is provided with external threads, and the inner peripheral wall of the water outlet is provided with internal threads. The rotating shaft is connected to the arm body through the engagement of the external and internal threads. The threaded connection has good sealing performance. When the rotating shaft is connected to the arm body, the engagement of the external and internal threads can prevent liquid leakage through the connection gap, ensuring that the nozzle can effectively spray high-pressure water jets. Furthermore, the threaded connection can withstand large tensile and shear forces, ensuring that the limiting and guiding components can be stably set and will not be washed away or detached by the high-pressure water flow output from the water outlet.

[0013] In one embodiment, the cross-sectional area of ​​the nozzle on the side away from the outlet gradually decreases in the direction away from the outlet. By gradually reducing the area of ​​the nozzle, the water flow is compressed as it passes through the outlet end of the nozzle, thereby increasing the speed and pressure of the water flow and making the water flow more powerful.

[0014] In one embodiment, the limiting member further includes an operating part disposed on the side of the rotating shaft away from the water outlet. The spray nozzle extends into the operating part, and the operating part is used to engage with a tool, such that rotation of the tool causes rotation of the limiting member. The limiting member is small in size and located inside the guide member, making its installation and disassembly somewhat inconvenient. The operating part allows the user to easily engage the limiting member with a tool, and by operating the tool, rotate the limiting member to complete a threaded connection with the arm body.

[0015] In one embodiment, the operating part is an annular boss or a keyway. Further, the annular boss is hexagonal in shape, allowing for easy operation by the installer using a wrench to connect the limiting component to the arm body via a thread, thereby limiting the guide component.

[0016] In one embodiment, the number of spray holes is multiple, and the multiple spray holes are spaced apart along the length direction of the spray arm body. The number of guide members is the same as the number of spray holes and they are arranged in a one-to-one correspondence. By providing multiple spray holes and corresponding guide members on the spray arm body, the cleaning area that the spray arm assembly can cover can be further expanded, greatly enhancing the cleaning effect of the dishwasher.

[0017] A second aspect of this application provides a dishwasher.

[0018] A dishwasher includes: an inner tub having a washing chamber; a spray arm assembly disposed within the washing chamber; and a water supply assembly connected to the spray arm assembly. A second aspect of this application provides a dishwasher employing the spray arm assembly of any of the aforementioned claims. The spray arm body has a rotatable guide member, and the guide member has a guide surface positioned in the water outlet direction of the spray nozzle. When a water jet is ejected from the spray nozzle, the guide surface contacts the water jet, causing a change in the spray angle. Furthermore, the guide surface rotates under the reaction force generated by the water jet impact. Driven by the water flow, the guide surface rotates around the axis of the spray nozzle, thereby causing the water flow to rotate and spray, increasing the cleaning area coverage of each spray nozzle and significantly enhancing the cleaning effect of the dishwasher. Attached Figure Description

[0019] Figure 1 An overall perspective view of the spray arm assembly according to one embodiment;

[0020] Figure 2 A partial perspective view of a spray arm assembly according to one embodiment;

[0021] Figure 3 A cross-sectional view of a spray arm assembly according to one embodiment;

[0022] Figure 4 An exploded view of a spray arm assembly according to one embodiment;

[0023] Figure 5 A perspective view of a guide component according to one embodiment;

[0024] Figure 6 This is a perspective view of a limiting member according to one embodiment.

[0025] The correspondence between the reference numerals and the component names is as follows:

[0026] 1. Spray arm body, 101. Spray hole, 102. Limiting space, 103. Water outlet, 11. Arm body, 111. Internal thread, 12. Limiting part, 121. Rotating shaft, 122. Limiting rib, 123. External thread, 124. Operating part, 1241. Annular boss, 1242. Keyway.

[0027] 2 guide component, 201 water collection tank, 21 flow guide part, 211 flow guide surface, 2111 abutting section, 2112 flow guide section, 22 rotating seat, 23 surrounding edge. Detailed Implementation

[0028] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0030] The spray arm assembly of some embodiments of the present invention is described below with reference to the accompanying drawings.

[0031] like Figures 1 to 5 As shown, this embodiment discloses a spray arm assembly, including: a spray arm body 1, the spray arm body 1 having a spray hole 101; a guide member 2, the guide member 2 being rotatably disposed on the spray arm body 1, the guide member 2 forming a guide surface 211, the guide surface 211 being disposed opposite to the spray hole 101, the guide surface 211 being configured to abut against the water flow ejected from the spray hole 101 to change the water flow spray direction, and being able to rotate around the axis of the spray hole 101 under the drive of the water flow to drive the water flow to rotate and spray.

[0032] This application provides a spray arm assembly. The spray arm body 1 is provided with a rotatable guide 2. The guide 2 is formed with a guide surface 211 arranged in the water outlet direction of the spray hole 101. When the spray hole 101 sprays out a water column, the guide surface 211 will come into contact with the water column and cause the spray angle of the water column to change. In addition, the guide surface 211 will rotate under the reaction force generated by the impact of the water column. The guide surface 211 rotates around the axis of the spray hole 101 under the drive of the water flow, thereby driving the water flow to rotate and spray, which increases the cleaning area coverage of the spray hole 101, greatly enhances the cleaning effect of the dishwasher, and improves the user experience.

[0033] like Figure 3 and Figure 5As shown, in addition to the features of the above embodiments, this embodiment further defines: the guide surface 211 includes an abutment section 2111 and a guide section 2112. The abutment section 2111 intersects the axis of the nozzle 101 to abut against the water flow ejected from the nozzle 101. One end of the guide section 2112 is connected to the abutment section 2111, and the other end of the guide section 2112 extends away from the axis of the nozzle 101. By adopting the above structure, the guide surface 211 includes the abutment section 2111 and the guide section 2112 connected sequentially along the water flow direction. When the nozzle 101 ejects a water column, the abutment section 2111 will abut against the water column, causing the water column to continue to advance along the guide section 2112. Thus, under the guidance of the guide section 2112, the direction and shape of the water column can be changed, and the water column can be rotated and ejected as the guide section 2112 rotates.

[0034] like Figure 3 and Figure 5 As shown, in addition to the features of the above embodiments, this embodiment further defines that the guide surface 211 is an arc-shaped structure that is concave in the direction away from the nozzle 101. By forming an arc-shaped structure, after the water column collides with the guide surface 211, it will diffuse into a sheet-like water column under the guidance of the guide surface 211, thereby expanding the water column spray area and further enhancing the cleaning effect. Moreover, the force generated by the impact between the water column sprayed from the nozzle 101 and the guide surface 211 can be partially decomposed into a horizontal force that drives the guide surface 211 to rotate, making the self-rotation of the guide surface 211 smoother.

[0035] like Figure 3 and Figure 5 As shown, in addition to the features of the above embodiments, this embodiment further defines that the horizontal height of the guide section 2112 gradually increases in the axial direction away from the nozzle 101. Therefore, the guide section 2112 can better extend in accordance with the water flow direction, avoiding excessive energy loss to the water flow.

[0036] like Figure 3 and Figure 5 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: two sides of the guide surface 211 are respectively provided with surrounding portions 23, and the two surrounding portions 23 cooperate with the guide surface 211 to form a water collection trough 201. By adopting the above structure to form the water collection trough 201, when the water flow sprayed from the nozzle 101 abuts and disperses against the contact section 2111, it can be surrounded and concentrated in the water collection trough 201 by the surrounding portions 23. This avoids water waste and allows for more concentrated water volume to be sprayed outward from the opening side of the water collection trough 201, thereby improving the cleaning effect.

[0037] like Figures 2 to 4As shown, in addition to the features of the above embodiments, this embodiment further defines: the spray arm body 1 includes an arm body 11 and a limiting member 12. The limiting member 12 is disposed on the arm body 11, and the limiting member 12 and the arm body 11 cooperate to form a limiting space 102. The guide member 2 includes a flow guiding part 21 and a rotating seat 22. The flow guiding part 21 is disposed on the rotating seat 22. A flow guiding surface 211 is formed on the side of the flow guiding part 21 near the spray hole 101. The rotating seat 22 is movably disposed in the limiting space 102. The opposite sides of the rotating seat 22 abut against the limiting member 12 and the arm body 11 respectively. The rotating seat 22 can rotate relative to the arm body 11 so that the flow guiding part 21 can rotate around the axis of the spray hole 101 under the drive of the water flow sprayed from the spray hole 101. By adopting the above structure, the rotating seat 22 is movably disposed in the limiting space 102 formed by the limiting member 12 and the arm body 11. Thus, when the guide part 21 is subjected to the reaction force generated by the water column impact, the rotating seat 22 will rotate relative to the arm body 11, causing the guide part 21 to rotate around the axis of the nozzle 101. The limiting member 12 and the arm body 11 limit the two end walls of the rotating seat 22, so that the guide part 2 can be stably set and will not be washed away or fall off by the water column sprayed from the nozzle 101.

[0038] like Figure 3 and Figure 6 As shown, in addition to the features of the above embodiments, this embodiment further defines: the limiting member 12 includes a rotating shaft 121 and a limiting rib 122, the arm body 11 is provided with a water outlet 103, one end of the rotating shaft 121 is adapted to be inserted into the water outlet 103, the rotating shaft 121 is provided with a spray hole 101, the water inlet end of the spray hole 101 is connected to the water outlet 103, the rotating seat 22 is rotatably sleeved on the outside of the rotating shaft 121, the limiting rib 122 is provided on the other end of the rotating shaft 121, the limiting rib 122, the rotating shaft 121 and the arm body 11 cooperate to form a limiting space 102, and the opposite sides of the rotating seat 22 abut against the limiting rib 122 and the arm body 11 respectively. By adopting the above structure, the rotating shaft 121 facilitates the positioning and installation of the rotating seat 22, and the nozzle 101 is set on the rotating shaft 121. When the rotating seat 22 and the rotating shaft 121 are fitted and installed, it can be ensured that the guide section 21 and the nozzle 101 are aligned and set, and the axis of the air contact section 2111 intersects with the axis of the nozzle 101 so as to resist the water flow sprayed from the nozzle 101 and achieve the guiding effect.

[0039] like Figure 3 and Figure 4As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the outer peripheral wall of the rotating shaft 121 is provided with an external thread 123, and the inner peripheral wall of the water outlet 103 is provided with an internal thread 111. The rotating shaft 121 is connected to the arm body 11 through the cooperation of the external thread 123 and the internal thread 111. The threaded connection has good sealing performance. When the rotating shaft 121 is connected to the arm body 11, the cooperation of the external thread 123 and the internal thread 111 can prevent liquid leakage through the connection gap, ensuring that the nozzle 101 can effectively spray high-pressure water jets. In addition, the threaded connection can withstand large tensile and shear forces, ensuring that the limiting member 12 and the guide member 2 can be stably set and will not be washed away or detached by the high-pressure water flow output from the water outlet 103.

[0040] like Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the cross-sectional area of ​​the nozzle 101 on the side away from the outlet 103 gradually decreases in the direction away from the outlet 103. By gradually reducing the area of ​​the nozzle 101, the water flow is compressed when passing through the outlet end of the nozzle 101, thereby increasing the speed and pressure of the water flow and making the water flow more powerful.

[0041] like Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the limiting member 12 also includes an operating part 124, which is disposed on the side of the rotating shaft 121 away from the water outlet 103. The spray hole 101 extends into the operating part 124. The operating part 124 is used to engage with a tool, so that the rotation of the tool causes the limiting member 12 to rotate. The limiting member 12 is small in size and located inside the guide member 2, making the installation and disassembly of the limiting member 12 inconvenient. With the setting of the operating part 124, the user can easily engage the limiting member 12 with a tool, and rotate the limiting member 12 to complete the threaded connection with the arm body 11 by operating the tool.

[0042] like Figure 4 and Figure 6 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the operating part 124 is an annular boss 1241 or a keyway 1242. Furthermore, the annular boss 1241 is hexagonal in shape, which, when used with a wrench, facilitates the operator's operation of the limiting member 12 to complete a threaded connection with the arm body 11, thereby limiting the guide member 2.

[0043] like Figure 1 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the number of spray holes 101 is multiple, the multiple spray holes 101 are spaced apart along the length direction of the spray arm body 1, and the number of guide members 2 is the same as the number of spray holes 101 and is arranged in a one-to-one correspondence. By providing multiple spray holes 101 and corresponding guide members 2 on the spray arm body 1, the cleaning area that the spray arm assembly can cover can be further expanded, greatly enhancing the cleaning effect of the dishwasher.

[0044] A second aspect of this application provides a dishwasher.

[0045] This embodiment discloses a dishwasher, including: an inner tub with a washing chamber; the aforementioned spray arm assembly disposed in the washing chamber; and a water supply assembly connected to the spray arm assembly. A second aspect of this application provides a dishwasher that employs the spray arm assembly of any of the aforementioned embodiments. The spray arm body 1 is provided with a rotatable guide 2, and the guide 2 has a guide surface 211 formed on it in the water outlet direction of the spray hole 101. When the spray hole 101 sprays a water column, the guide surface 211 contacts the water column, causing a change in the spray angle. Furthermore, the guide surface 211 rotates under the reaction force generated by the water column impact. Driven by the water flow, the guide surface 211 rotates around the axis of the spray hole 101, thereby causing the water flow to rotate and spray, increasing the cleaning area coverage of each spray hole 101 and greatly enhancing the cleaning effect of the dishwasher.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A spray arm assembly, characterized in that, include: The spray arm body (1) is provided with spray holes (101); A guide member (2) is rotatably disposed on the spray arm body (1). The guide member (2) forms a guide surface (211). The guide surface (211) is disposed opposite to the nozzle (101). The guide surface (211) is configured to abut against the water flow ejected from the nozzle (101) to change the direction of water flow. It can also rotate around the axis of the nozzle (101) under the drive of water flow to drive the water flow to rotate and spray.

2. The spray arm assembly according to claim 1, characterized in that, The guide surface (211) includes an abutting section (2111) and a guide section (2112). The abutting section (2111) intersects the axis of the nozzle (101) to abut against the water flow ejected from the nozzle (101). One end of the guide section (2112) is connected to the abutting section (2111), and the other end of the guide section (2112) extends away from the axis of the nozzle (101).

3. The spray arm assembly according to claim 2, characterized in that, The guide surface (211) is an arc-shaped structure that is concave in the direction away from the nozzle (101); and / or The horizontal height of the guide section (2112) gradually increases in a direction away from the axis of the nozzle (101); and / or The guide surface (211) is provided with a surrounding edge (23) on both sides, and the two surrounding edges (23) cooperate with the guide surface (211) to form a water collection trough (201).

4. The spray arm assembly according to claim 1, characterized in that, The main body (1) of the spray arm includes an arm body (11) and a limiting member (12). The limiting member (12) is disposed on the arm body (11), and the limiting member (12) and the arm body (11) cooperate to form a limiting space (102). The guide member (2) includes a flow guiding part (21) and a rotating seat (22). The flow guiding part (21) is disposed on the rotating seat (22), and the flow guiding part (21) is close to the spray hole (101). The guide surface (211) is formed on one side, and the rotating seat (22) is movably disposed in the limiting space (102). The two opposite sides of the rotating seat (22) abut against the limiting member (12) and the arm (11) respectively. The rotating seat (22) can rotate relative to the arm (11) so that the guide part (21) can rotate around the axis of the nozzle (101) under the drive of the water flow ejected from the nozzle (101).

5. The spray arm assembly according to claim 4, characterized in that, The limiting member (12) includes a rotating shaft (121) and a limiting rib (122). The arm body (11) is provided with a water outlet (103). One end of the rotating shaft (121) is adapted to be inserted into the water outlet (103). The rotating shaft (121) is provided with a spray hole (101). The water inlet end of the spray hole (101) is connected to the water outlet (103). The rotating seat (22) is rotatably sleeved on the outside of the rotating shaft (121). The limiting rib (122) is provided on the other end of the rotating shaft (121). The limiting rib (122), the rotating shaft (121), and the arm body (11) cooperate to form the limiting space (102). The two opposite sides of the rotating seat (22) abut against the limiting rib (122) and the arm body (11), respectively.

6. The spray arm assembly according to claim 5, characterized in that, The outer peripheral wall of the rotating shaft (121) is provided with an external thread (123), and the inner peripheral wall of the water outlet (103) is provided with an internal thread (111). The rotating shaft (121) is connected to the arm body (11) through the engagement of the external thread (123) and the internal thread (111); and / or The cross-sectional area of ​​the nozzle (101) on the side away from the outlet (103) gradually decreases in the direction away from the outlet (103).

7. The spray arm assembly according to claim 5, characterized in that, The limiting member (12) also includes an operating part (124), which is disposed on the side of the rotating shaft (121) away from the water outlet (103). The spray hole (101) extends into the operating part (124), and the operating part (124) is used to engage with a tool so that the rotation of the tool causes the limiting member (12) to rotate.

8. The spray arm assembly according to claim 7, characterized in that, The operating part (124) is an annular boss (1241) or a keyway (1242).

9. The spray arm assembly according to any one of claims 1 to 8, characterized in that, The number of spray holes (101) is multiple, and the multiple spray holes (101) are spaced apart along the length direction of the spray arm body (1). The number of guide members (2) is the same as the number of spray holes (101) and they are arranged in a one-to-one correspondence.

10. A dishwasher, characterized in that, include: The inner liner is provided with a washing chamber; The spray arm assembly as described in any one of claims 1 to 9, wherein the spray arm assembly is disposed in the washing chamber; A water supply assembly, which is connected to the spray arm assembly.

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