Water inlet structure of spray arm assembly, spray arm assembly, and dishwasher

Abstract

The present invention discloses a water inlet structure of a spray arm assembly, a spray arm assembly, and a dishwasher. The water inlet structure comprises a water inlet chamber having a central water inlet (204) and at least two water outlets (205), wherein the water inlet chamber is provided with guide channels (206) each communicating with a respective one of the water outlets (205), and each of the guide channels (206) communicates with the central water inlet (204); and a flow control member (203) configured to, under the impact of water flow, move from one guide channel (206) to another guide channel (206), thereby alternately blocking at least one of the water outlets (205). In use, the water outlets (205) are connected to spray arm bodies, and different spray arm bodies can be switched for water spray through intermittent water supply. By configuring different spray arm bodies to have different water spray directions, the spray arm bodies can be controlled to alternately rotate clockwise and counterclockwise, thereby increasing the spray coverage area and cleaning region and improving the cleaning effect.

Description

Technical Field

[0001] The present invention relates to the field of dishwashers, and more particularly, to a water inlet structure for a spray arm assembly, a spray arm assembly, and a dishwasher comprising the same.Background

[0002] A dishwasher is an automatic device for cleaning tableware such as bowls, chopsticks, plates, dishes, knives, forks, and the like. With the improvement of living standards, an increasing number of households have purchased dishwashers, thereby significantly saving users' labor intensity and time. Generally, dishwashers drive spray arms to rotate through water flow, and then spray water toward the tableware through the spray arms to achieve the purpose of cleaning the tableware.

[0003] However, conventional spray arms in dishwashers can only rotate in a single direction, and the positions sprayed each time are substantially the same. As a result, while one side of the tableware is cleaned effectively, the other side is cleaned poorly. When secondary contaminants are washed to the other side of the tableware, they are difficult to clean, and the overall cleaning effect is unsatisfactory.

[0004] Accordingly, the present invention is proposed to address the above issues.Invention Content

[0005] The present invention aims to overcome the deficiencies of the prior art. In a first aspect, the present invention provides a water inlet structure for a spray arm assembly with a wide water spray coverage range.

[0006] In a second aspect, the present invention provides a spray arm assembly comprising the water inlet structure as described above, which has a wide water spray coverage range and achieves cleaner cleaning.

[0007] In a third aspect, the present invention provides a dishwasher comprising the spray arm assembly as described above.

[0008] To achieve the above objectives, the present invention adopts the following technical solutions: In the first aspect, the present invention provides a water inlet structure for a spray arm assembly, comprising: a water inlet chamber having a central water inlet and at least two water outlets, wherein the water inlet chamber is provided with guide channels each communicating with a respective one of the water outlets, and each of the guide channels communicates with the central water inlet; and a flow control member configured to, under the impact of water flow, jump from one guide channel to another guide channel, thereby alternately blocking at least one of the water outlets.

[0009] The water inlet structure according to the present invention comprises at least two guide channels each having one end connected to the central water inlet and the other end connected to a water outlet. The flow control member can, under the impact of water flow, jump from one guide channel to another guide channel, thereby alternately blocking at least one of the water outlets. In use, the water outlets are connected to spray arm bodies, and different spray arm bodies can be switched for water spray through intermittent water supply. By configuring different spray arm bodies to have different water spray directions, the spray arm bodies can be controlled to alternately rotate clockwise and counterclockwise, thereby increasing the spray coverage area and cleaning region and improving the cleaning effect.

[0010] Preferably, the water inlet chamber is provided with a fixed seat, wherein the central water inlet is arranged in a central region of the fixed seat, and at least two guide channels are formed on the fixed seat, with the flow control member moving within the guide channels. More preferably, the fixed seat has a circular structure.

[0011] Preferably, the fixed seat extends upward inclined radially from an outer periphery of the central water inlet.

[0012] Preferably, the bottom wall of the fixed seat is provided with guide walls, each guide wall extending from the outer periphery of the central water inlet toward an outer peripheral region of the fixed seat, with the extension end located on one side of a water outlet. Adjacent guide walls define therebetween a guide channel communicating the central water inlet with one of the water outlets. Each guide wall is provided with a transition portion, wherein the flow control member can, under the impact of water flow, cross the transition portion from one guide channel into another guide channel to block the water outlet at the end of said another guide channel.

[0013] Preferably, under normal conditions, the flow control member remains at an end of the guide channel adjacent to the central water inlet. When water supply starts, the flow control member moves along the guide channel under the impact of water flow and, upon reaching the transition portion, crosses the transition portion into another guide channel, continuing to move along said another guide channel to the water outlet to block it. When water supply stops, the flow control member returns along the current guide channel to the outer periphery of the central water inlet under the action of gravity.

[0014] Preferably, a middle region of the guide wall has a bent portion, the bent portion extending along a tangential direction of the central water inlet. The transition portion is arranged on the bent portion and corresponds in position to the water outlet.

[0015] Preferably, the bent portion has a first side wall facing the central water inlet and a second side wall facing the water outlet. An angle between the first side wall and the bottom wall of the fixed seat is greater than an angle between the second side wall and the bottom wall of the fixed seat.

[0016] Preferably, the guide wall has a first extension portion and a second extension portion, wherein the first extension portion, the bent portion, and the second extension portion are sequentially connected. Both the first extension portion and the second extension portion have a certain thickness. More preferably, the first extension portion and the second extension portion are centrally symmetrically arranged relative to the bent portion.

[0017] Preferably, the extension ends of all guide walls are located on the same side of all water outlets along the circumferential direction of the fixed seat. The first extension portion extends from the outer periphery of the central water inlet toward the water outlet, with its extension end connected to the bent portion. The bent portion extends along the tangential direction of the central water inlet, with its extension end connected to the second extension portion. The second extension portion continues extending toward the water outlet, with its extension end located on one side of the water outlet.

[0018] Preferably, a rotating member is disposed above the fixed seat, with an outer peripheral portion of the rotating member rotatably connected to the fixed seat. The rotating member guides the flow control member, which is under the impact of water flow, to jump from one guide channel into another guide channel. More preferably, the rotating member is arranged within the water inlet chamber.

[0019] Preferably, when water supply starts, the rotating member guides the flow control member to jump from one guide channel into another guide channel. When water supply stops, the flow control member moves from the water outlet along the current guide channel toward the central water inlet, thereby driving the rotating member to rotate.

[0020] Preferably, the rotating member internally has a movement channel, wherein the flow control member can move along the movement channel under the impact of water flow, jumping from one guide channel into another guide channel.

[0021] Preferably, the rotating member comprises a top wall and two side walls, wherein a receiving cavity formed by the top wall and the two side walls defines the movement channel, and the receiving cavity is arranged above the guide channel. When the impact of water flow stops, the flow control member moves along the current guide channel from the water outlet toward the central water inlet, pushing the side wall to drive the rotating member to rotate.

[0022] Preferably, a limiting portion is provided between the side wall and the outer periphery of the rotating member. The limiting portion is a horizontally arranged plate-like structure configured to control the flow control member to always jump from one guide channel into an adjacent guide channel in the same circumferential direction.

[0023] Preferably, the receiving cavity is provided with a blocking portion configured to prevent the flow control member from entering the central water inlet.

[0024] Preferably, the blocking portion comprises at least one inclined surface structure inclinedly arranged from the top wall toward the central water inlet.

[0025] Preferably, the flow control member has a spherical structure, and a diameter of the flow control member is greater than a minimum distance from an outer peripheral edge of the central water inlet to the inclined surface structure.

[0026] Preferably, a housing is disposed above the rotating member, with an outer peripheral edge of the housing sealingly connected to an outer periphery of the fixed seat. More preferably, the housing and the fixed seat together define the water inlet chamber.

[0027] In the second aspect, the present invention provides a spray arm assembly comprising the water inlet structure according to the first aspect. Preferably, the housing has an outer peripheral edge from which at least two spray arm bodies extend outward, each spray arm body being correspondingly connected to and communicating with a respective water outlet.

[0028] The spray arm assembly according to the present invention employs the water inlet structure as described above, thereby enabling the spray arms to alternately rotate in forward and reverse directions, increasing the spray coverage area and cleaning region, and improving the cleaning effect.

[0029] Preferably, the flow control member has a spherical structure provided with a magnetic attraction region. The spray arm assembly further comprises a magnetic attraction member configured to generate attraction force on the magnetic attraction region. The magnetic attraction member has a ring-like structure embedded in the spray arm body at the water outlet position.

[0030] Preferably, the gravity of the flow control member is greater than the attraction force generated by the magnetic attraction member.

[0031] Preferably, four spray arm bodies are provided, uniformly distributed along the outer edge of the housing. Two flow control members are provided, wherein the two flow control members alternately block or open two water outlets that are oppositely arranged.

[0032] The present invention provides a configuration with four spray arm bodies and two flow control members, wherein the two flow control members alternately block or open two oppositely arranged water outlets, such that the four spray arm bodies are divided into two groups that are symmetrically arranged in pairs. The two groups of spray arm bodies alternately close or open for spraying, thereby increasing the spray region and improving the cleaning effect.

[0033] In the third aspect, the present invention provides a dishwasher comprising the spray arm assembly according to the second aspect.

[0034] The present invention provides a dishwasher with the spray arm assembly as described above installed therein. The spray arm can alternately rotate clockwise and counterclockwise, providing a larger spray range and achieving cleaner washing.

[0035] Compared with the prior art, the present invention provides the following beneficial effects: In the present invention, the water inlet chamber is provided with a plurality of guide channels, and the flow control member can, under the impact of water flow, jump from one guide channel to another guide channel, thereby alternately blocking at least one of the water outlets. The fixed seat extends upward inclined radially from the outer periphery of the central water inlet. When water supply stops and the impact force of water flow on the flow control member disappears, the flow control member can, under the action of gravity, move along the current guide channel from the water outlet position back to the edge of the central water inlet. The water outlets are connected to spray arm bodies, and different spray arm bodies can be switched for water spray through intermittent water supply. When different spray arm bodies have different water spray directions, the spray arm assembly can be controlled to alternately rotate in clockwise and counterclockwise directions, thereby increasing the spray coverage area and cleaning region and improving the cleaning effect.Brief Description of Drawings

[0036] The drawings, which constitute a part of the present invention, are provided for further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not limit the scope of the present invention. Obviously, the drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] In the drawings: FIG. 1 is a schematic diagram of a water inlet structure of a spray arm assembly according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a fixed seat according to an embodiment of the present invention; FIG. 3 is a schematic diagram of a rotating member according to an embodiment of the present invention; FIG. 4 is a schematic diagram of a spray arm assembly according to an embodiment of the present invention; FIG. 5 is an enlarged view of the water inlet structure in FIG. 4 according to an embodiment of the present invention; FIG. 6 is a cross-sectional schematic view of a spray arm assembly according to an embodiment of the present invention.

[0038] In the drawings: 1 - spray arm body; 2 - water inlet structure; 201 - fixed seat; 202 - rotating member; 203 - flow control member; 204 - central water inlet; 205 - water outlet; 206 - guide channel; 207 - magnetic attraction member; 208 - ring-like structure; 2011 - guide wall; 2012 - first extension portion; 2013 - transition portion; 2014 - second extension portion; 2015 - first side wall; 2016 - second side wall; 2021 - movement channel; 2022 - limiting portion; 2023 - blocking portion.

[0039] It should be noted that these drawings and descriptions are not intended to limit the scope of the concept of the present invention in any way, but rather to explain the concept of the present invention to those skilled in the art by referring to specific embodiments.Detailed Description of Embodiments

[0040] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the drawings. The described embodiments are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort shall fall within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referenced device or element must have a specific orientation, or must be constructed and operated in a specific orientation. Therefore, these terms should not be construed as limiting the present invention.

[0042] In the description of the present invention, it should be noted that unless otherwise explicitly specified and defined, the terms "mount," "connect," and "connection" should be understood in a broad sense. For example, they can be fixed connections, detachable connections, or integrated connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meanings of these terms in the present invention according to specific circumstances.

[0043] As shown in FIG. 1 to FIG. 6, an embodiment of the present invention provides a water inlet structure 2 for a spray arm assembly, a spray arm assembly having the water inlet structure 2, and a dishwasher having the spray arm assembly.

[0044] Specifically, the water inlet structure 2 of the spray arm comprises: a water inlet chamber having a central water inlet 204 and at least two water outlets 205, wherein the water inlet chamber is provided with guide channels 206 each communicating with a respective one of the water outlets 205, and each of the guide channels 206 communicates with the central water inlet 204; and a flow control member 203 configured to, under the impact of water flow, jump from one guide channel 206 to another guide channel 206, thereby alternately blocking at least one of the water outlets 205.

[0045] The spray arm assembly according to this embodiment comprises the water inlet structure 2 as described above, and further comprises at least two spray arm bodies 1 extending outward. Each water outlet 205 of the water inlet structure 2 is correspondingly connected to and communicates with a respective spray arm body 1.

[0046] The dishwasher according to this embodiment comprises the spray arm assembly as described above. In operation of the dishwasher, water flow enters the water inlet chamber through the central water inlet 204. The flow control member 203 can, under the impact of water flow, jump from one guide channel 206 to another guide channel 206, thereby alternately blocking at least one of the water outlets 205. The spray arm body 1 corresponding to the blocked water outlet 205 will not discharge water. Thus, different spray arm bodies 1 can be switched for water discharge through intermittent water supply.

[0047] Further, the spray arm assembly as a whole is rotatably disposed in the dishwasher. When different spray arm bodies 1 have different water spray directions, switching different spray arm bodies 1 for water discharge enables the spray arm assembly to alternately rotate clockwise and counterclockwise, thereby increasing the spray coverage area and cleaning region and achieving cleaner washing.Embodiment 1

[0048] As shown in FIG. 1 to FIG. 3, this embodiment provides a water inlet structure 2 for a spray arm assembly.

[0049] The water inlet structure 2 for the spray arm assembly according to this embodiment comprises a water inlet chamber having a central water inlet 204 and at least two water outlets 205. The water inlet chamber is provided with guide channels 206 each communicating with a respective one of the water outlets 205, and each of the guide channels 206 communicates with the central water inlet 204.

[0050] The water inlet structure 2 further comprises a flow control member 203 configured to, under the impact of water flow, jump from one guide channel 206 to another guide channel 206, thereby alternately blocking at least one of the water outlets 205.

[0051] The water inlet structure 2 for the spray arm assembly according to this embodiment comprises a water inlet chamber and the flow control member 203. The water inlet chamber has a central water inlet 204 at its central position, and at least two water outlets 205 arranged at the outer peripheral edge of the water inlet chamber. The water inlet chamber is further provided with guide channels 206. One end of each guide channel 206 is connected to the central water inlet 204, and the other end extends toward the water outlet 205, with the extension end being the water outlet 205. The number of guide channels 206 is the same as the number of water outlets 205.

[0052] The flow control member 203 is arranged within the water inlet chamber and moves within the guide channels 206. When the flow control member 203 is not subjected to the force of water flow, it can move along the current guide channel 206, i.e., from the position of the water outlet 205 along the current guide channel 206 to the edge of the central water inlet 204. When the flow control member 203 is subjected to the impact force of water flow, it moves from the edge of the central water inlet 204 in a substantially radial direction toward the water outlet 205. During this movement, it can jump from the current guide channel 206 into another guide channel 206, thereby moving along the another guide channel 206 to the corresponding water outlet 205 and blocking it. That is, with each instance of water stopping and restarting, the flow control member 203 can alternately block different water outlets 205.

[0053] The solution according to this embodiment further comprises: the water inlet chamber is provided with a fixed seat 201, wherein the central water inlet 204 is arranged in a central region of the fixed seat 201, and at least two guide channels 206 are formed on the fixed seat 201, with the flow control member 203 moving within the guide channels 206.

[0054] As a specific implementation, the fixed seat 201 has a circular structure.

[0055] Further, the water inlet chamber is provided with a rotating member 202, which is disposed on the fixed seat 201, and its outer peripheral portion is rotatably connected to the fixed seat 201.

[0056] When the flow control member 203 is subjected to water flow impact, it is guided by the rotating member 202 to jump from one guide channel 206 into another guide channel 206.

[0057] In this embodiment, the water inlet structure 2 further comprises a housing (not shown in the drawings), which is disposed above the rotating member 202, and the outer peripheral edge of the housing is sealingly connected to the outer periphery of the fixed seat 201. The housing and the fixed seat 201 together define the water inlet chamber.

[0058] In the above solution, the water inlet chamber comprises the fixed seat 201 and the rotating member 202. The fixed seat 201 has a circular structure, with the central water inlet 204 arranged at the center of the circular structure. The guide channels 206 are arranged on the bottom wall of the fixed seat 201. The rotating member 202 is disposed on the fixed seat 201, and its outer peripheral portion is rotatably connected to the outer periphery of the fixed seat 201. The water inlet chamber further comprises a housing, which is disposed above the rotating member 202, and the outer peripheral edge of the housing is sealingly connected to the outer periphery of the fixed seat 201. In the above solution, the housing is a cylindrical recess structure with an opening facing downward. The rotating member 202 is arranged within the recess, the opening edge of the recess structure is sealingly connected to the outer periphery of the fixed seat 201, and the outer periphery of the housing is provided with water outlets 205. The water inlet chamber is substantially formed by the housing and the fixed seat 201. The rotating member 202 is provided with an opening, and the position of the opening coincides with the positions of the water outlets 205 on the housing. Thus, when the flow control member 203 moves to the opening, it can block the corresponding water outlet 205.

[0059] Of course, in other solutions of this embodiment, the housing may also be a cylindrical structure with water outlets 205 on its outer periphery, and both the fixed seat 201 and the rotating member 202 are arranged inside the housing.

[0060] As shown in FIG. 2, the solution according to this embodiment further comprises: the fixed seat 201 is provided with guide walls 2011. Each guide wall 2011 extends from the outer periphery of the central water inlet 204 on the fixed seat 201 toward an outer peripheral region of the fixed seat 201, with its extension end located on one side of a water outlet 205. Adjacent guide walls 2011 define therebetween a guide channel 206 communicating the central water inlet 204 with one of the water outlets 205. Each guide wall 2011 is provided with a transition portion 2013. When the flow control member 203 is subjected to water flow impact, it can cross the transition portion 2013 on the guide wall 2011 from one guide channel 206 into another guide channel 206, thereby blocking the water outlet 205 at the end of said another guide channel 206.

[0061] In the specific solution according to this embodiment, the fixed seat 201 extends upward inclined radially from the outer periphery of the central water inlet 204.

[0062] The above solution is described in detail as follows: The fixed seat 201 has a bottom wall, on which at least two guide walls 2011 are protruding arranged. The guide channels 206 are formed between adjacent guide walls 2011. Specifically, each guide wall 2011 extends from the outer periphery of the central water inlet 204 toward the outer peripheral region of the fixed seat 201, with the extension end of the guide wall 2011 located on one side of the water outlet 205.

[0063] The fixed seat 201 is inclined, extending upward inclined radially from the outer periphery of the central water inlet 204. That is, the horizontal height at which the central water inlet 204 of the fixed seat 201 is located is lower than the horizontal height of the outer peripheral edge of the fixed seat 201. This arrangement enables the flow control member 203, after no longer being subjected to the impact force of water flow, to move from the water outlet 205 toward the central water inlet 204 under its own gravity.

[0064] The guide wall 2011 is provided with a transition portion 2013. When the flow control member 203 is at the edge of the central water inlet 204 and water supply starts, the flow control member 203 moves along the guide channel 206 under the impact of water flow to the position of the transition portion 2013 on the guide wall 2011, and crosses the transition portion 2013 to enter another guide channel 206. When the water flow impact disappears, the flow control member 203 moves toward the central water inlet 204 under its own gravity. At this time, the kinetic energy is insufficient to cross the transition portion 2013 again, so it moves along the current guide channel 206 to the edge of the central water inlet 204.

[0065] As shown in FIG. 4 to FIG. 6, the water inlet structure 2 according to this embodiment is applied to a spray arm assembly. The water outlets 205 are connected to spray arm bodies 1, and different spray arm bodies 1 have spray holes with different water spray directions. When water enters the water inlet chamber from the central water inlet 204, the flow control member 203, under the impact of water flow, blocks some of the water outlets 205, so that the corresponding spray arm bodies 1 cannot discharge water, and only some spray arm bodies 1 can spray water. By controlling intermittent water supply to the water inlet chamber, each time the water supply is interrupted and then restarted, the flow control member 203 switches the currently blocked water outlet 205, thereby switching the spray arm body 1 for spraying. Since the spray holes on different spray arm bodies 1 have different water spray directions, the reaction force generated by water spraying also constantly switches direction. This enables the spray arm assembly to alternately rotate clockwise and counterclockwise, increasing the spray coverage area and cleaning region and achieving cleaner washing.

[0066] The solution according to this embodiment further comprises: a middle region of the guide wall 2011 has a bent portion, the bent portion extending along a tangential direction of the central water inlet 204. The transition portion 2013 is arranged on the bent portion and corresponds in position to the water outlet 205.

[0067] In the above solution, the transition portion 2013 is arranged to extend along the tangential direction of the central water inlet 204, and its position substantially coincides with the water outlet 205 in the radial direction. This enables the flow control member 203, when subjected to water flow impact, to move radially and, after crossing the transition portion 2013, move toward the water outlet 205 to block the water outlet 205.

[0068] Further, the bent portion has a first side wall 2015 facing the central water inlet 204 and a second side wall 2016 facing the water outlet 205. An angle between the first side wall 2015 and the bottom wall of the fixed seat 201 is greater than an angle between the second side wall 2016 and the bottom wall of the fixed seat 201.

[0069] In the above solution, the angle between the first side wall 2015 and the bottom wall of the fixed seat 201 is larger, so the flow control member 203 can more easily cross the transition portion 2013 from the side where the first side wall 2015 is located. Crossing the transition portion 2013 from the side where the second side wall 2016 is located would require greater force. Therefore, when subjected to water flow impact, the flow control member 203 can easily move radially to cross the transition portion 2013. However, when the water flow impact disappears, the flow control member 203 has insufficient kinetic energy and is blocked by the second side wall 2016, unable to cross the transition portion 2013, so it moves along the current guide channel 206.

[0070] Further, the guide wall 2011 further comprises a first extension portion 2012 and a second extension portion 2014, wherein the first extension portion 2012, the bent portion, and the second extension portion 2014 are sequentially connected. Both the first extension portion 2012 and the second extension portion 2014 have a certain thickness.

[0071] In a preferred structure, the first extension portion 2012 and the second extension portion 2014 are centrally symmetrically arranged relative to the bent portion.

[0072] Further, the extension ends of all guide walls 2011 are located on the same side of all water outlets 205 along the circumferential direction of the fixed seat 201. The first extension portion 2012 is connected at one end to the outer periphery of the central water inlet 204 and extends toward the water outlet 205, with its extension end connected to the bent portion. The bent portion extends along the tangential direction of the central water inlet 204, with its extension end connected to the second extension portion 2014. The second extension portion 2014 continues extending toward the water outlet 205, with its extension end located on one side of the water outlet 205.

[0073] The specific arrangement positions and shapes of the guide walls 2011 in the above solution are described in detail as follows: The guide wall 2011 is a rib protruding from the bottom wall of the fixed seat 201, extending from the outer periphery of the central water inlet 204 along the radial direction of the central water inlet 204 toward the position where the water outlet 205 is located. The rib has a certain thickness.

[0074] The guide wall 2011 comprises three parts: a first extension portion 2012, a bent portion, and a second extension portion 2014, which are sequentially connected, with the connections being arcuate.

[0075] The first extension portion 2012 of the guide wall 2011 is connected to the outer periphery of the central water inlet 204 and extends along the radial direction of the central water inlet 204 toward the water outlet 205, with its extension end connected to the bent portion. The bent portion extends along the tangential direction of the central water inlet 204, with its extension end connected to the second extension portion 2014. The second extension portion 2014 continues extending toward the water outlet 205, with its extension end extending to one side of the water outlet 205.

[0076] It should be noted that the number and positions of the guide walls 2011 correspond one-to-one with the number and positions of the water outlets 205. When multiple guide walls 2011 are arranged, the extension ends of the second extension portions 2014 of all guide walls 2011 are located on the same side of all water outlets 205 along the circumferential direction of the fixed seat 201.

[0077] In the solution according to this embodiment, the bent portion on the guide wall 2011, i.e., the transition portion 2013, extends along the tangential direction of the central water inlet 204 and is arranged corresponding to the water inlet. Moreover, the bent portion extends from a position corresponding to one side of a water outlet 205 to a position corresponding to the other side of said water outlet 205.

[0078] At the bent portion of the guide wall 2011, there are a first side wall 2015 and a second side wall 2016. The first side wall 2015 faces the central water inlet 204, and the second side wall 2016 faces the water outlet 205. The angles between the first side wall 2015 and the second side wall 2016 and the inner wall of the fixed seat 201 are different. The angle between the first side wall 2015 and the bottom wall of the fixed seat 201 is greater than the angle between the second side wall 2016 and the bottom wall of the fixed seat 201.

[0079] In the solution according to this embodiment, the angle between the second side wall 2016 and the bottom wall of the fixed seat 201 is less than or equal to ninety degrees. The angle between the first side wall 2015 and the bottom wall of the fixed seat 201 is greater than ninety degrees. That is, the first side wall 2015 is provided with a slope, while the second side wall 2016 has no slope. When the flow control member 203 moves to the position of the first side wall 2015, it can, under the action of water flow, jump from the current guide channel 206 into another guide channel 206 along the slope on the first side wall 2015. Since the second side wall 2016 has no slope, the flow control member 203 cannot move from the position of the second side wall 2016 of the transition portion 2013 to the position of the first side wall 2015.

[0080] In a preferred solution of this embodiment, the angle between the second side wall 2016 and the bottom wall of the fixed seat 201 is ninety degrees, and the angle between the first side wall 2015 and the bottom wall of the fixed seat 201 is one hundred and thirty-five degrees.

[0081] As a preferred solution of this embodiment, the first extension portion 2012 and the second extension portion 2014 of the guide wall 2011 are centrally symmetrically arranged relative to the bent portion.

[0082] The water inlet structure 2 for the spray arm assembly according to the present invention arranges the transition portion 2013 to extend along the tangential direction of the central water inlet 204, with its extension direction corresponding to the water outlet 205. This enables the flow control member 203, after crossing the transition portion 2013, to move toward the water outlet 205 to block the water outlet 205. Furthermore, since the bent portion has a first side wall 2015 and a second side wall 2016, with the angle between the first side wall 2015 and the bottom wall of the fixed seat 201 being greater than the angle between the second side wall 2016 and the bottom wall of the fixed seat 201, and the first side wall 2015 being arranged facing away from the water outlet 205, when the flow control member 203 moves from the central water inlet 204 toward the water outlet 205, it can, under the impact of water flow, cross the transition portion 2013 from one guide channel 206 to another guide channel 206. When the flow control member 203 moves from the water outlet 205 toward the central water inlet 204, it is blocked by the second side wall 2016 and has no water flow force, so it can only move along the current guide channel 206.

[0083] The solution according to this embodiment further comprises: when water supply starts, the rotating member 202 guides the flow control member 203 to jump from one guide channel 206 into another guide channel 206. When water supply stops, the flow control member 203 moves from the water outlet 205 along the current guide channel 206 toward the central water inlet 204, thereby driving the rotating member 202 to rotate.

[0084] Further, as shown in FIG. 1 to FIG. 3, the solution according to this embodiment further comprises: the rotating member 202 internally has a movement channel 2021. The flow control member 203 can move along the movement channel 2021 under the impact of water flow, jumping from one guide channel 206 into another guide channel 206, thereby alternately blocking at least one water outlet 205.

[0085] In the above solution, the flow control member 203 is installed in the movement channel 2021. When subjected to water flow impact, the flow control member 203 moves along the movement channel 2021 under the guidance of the movement channel 2021, jumping from one guide channel 206 into another guide channel 206.

[0086] Further, the rotating member 202 comprises a top wall and two side walls. A receiving cavity formed by the top wall and the two side walls defines the movement channel 2021. The receiving cavity is arranged above the guide channel 206.

[0087] When the water flow impact stops, the flow control member 203 moves along the current guide channel 206 from the water outlet 205 toward the central water inlet 204, pushing the side wall to drive the rotating member 202 to rotate.

[0088] In the above solution, when the flow control member 203 moves from the water outlet 205 toward the central water inlet 204, it can push the side wall, thereby driving the rotating member 202 to rotate. This rotates the end of the movement channel 2021 from the position of the current water outlet 205 to the position of an adjacent water outlet 205. Thus, the next time water enters from the central water inlet 204, the flow control member 203 can move along the movement channel 2021 to block a different water outlet 205 from the previous one.

[0089] In this embodiment, a limiting portion 2022 is provided between the side wall and the outer periphery of the rotating member 202. The limiting portion 2022 is a horizontally arranged plate-like structure configured to control the flow control member 203 to always jump from one guide channel 206 into an adjacent guide channel 206 in the same circumferential direction.

[0090] By arranging the limiting portion 2022, the flow control member 203 can only move within the movement channel 2021, preventing the flow control member 203 from not moving toward the water outlet 205 when subjected to water flow impact.

[0091] Further, the receiving cavity is provided with a blocking portion 2023 configured to prevent the flow control member 203 from entering the central water inlet 204. The blocking portion 2023 comprises at least one inclined surface structure inclinedly arranged from the top wall toward the central water inlet 204. Specifically, the flow control member 203 has a spherical structure, and the diameter of the flow control member 203 is greater than the minimum distance from the outer peripheral edge of the central water inlet 204 to the inclined surface structure.

[0092] By arranging the blocking portion 2023 on the rotating member 202, the flow control member 203 can be prevented from blocking the central water inlet 204. Additionally, the flow control member 203 can be prevented from being directly pushed out of the movement channel 2021 by water flow from the central water inlet 204, which would cause random blocking of some water outlets 205, making the spray arm body 1 spraying water uncontrollable.

[0093] The specific structure of the rotating member 202 in the above solution is described in detail as follows: The rotating member 202 in this embodiment is a circular structure disposed above the fixed seat 201, with its outer periphery rotatably connected to the outer periphery of the fixed seat 201. The rotating member 202 has a movement channel 2021 for the flow control member 203 to move therein. The movement channel 2021 is a receiving cavity formed by the top wall and two side walls of the rotating member 202, and the movement channel 2021 is arranged above the guide channel 206.

[0094] The rotating member 202 further comprises a limiting portion 2022, which is a plate-like structure arranged between the side wall of the movement channel 2021 and the outer periphery of the rotating member 202. This controls the flow control member 203 to always jump into an adjacent guide channel 206 in one circumferential direction. In use, the water inlet structure 2 is installed in the spray arm assembly, with the water outlets 205 of the water inlet structure 2 directly facing the water inlets of the spray arm bodies 1. At this time, the ends of the movement channel 2021 are aligned with the water inlets of some spray arm bodies 1. When the flow control member 203 moves from the water outlet 205 along the guide channel 206 toward the edge of the central water inlet 204, it pushes the side wall of the movement channel 2021 to drive the rotating member 202 to rotate, thereby rotating the end of the movement channel 2021 to align with the water inlets of other spray arm bodies 1. The purpose of arranging the limiting portion 2022 is to prevent the flow control member 203 from making irregular movements under the action of water flow, thereby ensuring that the flow control member 203 always jumps into adjacent guide channels 206 in the same circumferential direction.

[0095] The rotating member 202 is further provided with a blocking portion 2023, which is an inclined surface structure inclinedly arranged from the top wall of the receiving cavity toward the central water inlet 204. This prevents the flow control member 203 from moving into the central water inlet 204. In this solution, the flow control member 203 has a spherical structure, and the diameter of the flow control member 203 is greater than the minimum distance from the outer peripheral edge of the central water inlet 204 to the inclined surface structure.

[0096] The solution according to this embodiment further comprises: under normal conditions, the flow control member 203 remains at an end of the guide channel 206 adjacent to the central water inlet 204. When water supply starts, the flow control member 203 moves along the guide channel 206 under the impact of water flow and, upon reaching the position of the transition portion 2013, crosses the transition portion 2013 into another guide channel 206, continuing to move along the guide channel 206 to the water outlet 205 to block it. When water supply stops, the flow control member 203 returns along the current guide channel 206 to the outer periphery of the central water inlet 204 under the action of gravity.

[0097] In the solution according to this embodiment, the flow control member 203 has three states: under normal conditions, when water supply starts, and when water supply stops.

[0098] Under normal conditions, the flow control member 203 remains at an end of the guide channel 206 adjacent to the central water inlet 204, i.e., the flow control member 203 is caught at the edge of the central water inlet 204 within the guide channel 206 by the blocking portion 2023.

[0099] When water supply starts, water flows into the water inlet chamber through the central water inlet 204, impacting the flow control member 203 to move along the movement channel 2021 toward the water outlet 205. When reaching the position of the transition portion 2013 on the guide wall 2011, it crosses the transition portion 2013 into another guide channel 206 and continues to move along that guide channel 206 to the water outlet 205 to block it.

[0100] When water supply stops, the flow control member 203 moves along the current guide channel 206 under the action of gravity. Additionally, the flow control member 203 pushes the side wall of the movement channel 2021 to cause the rotating member 202 to rotate. The flow control member 203 returns to the outer periphery of the central water inlet 204 and is caught by the blocking portion 2023 to stop moving.

[0101] In one specific solution, the water inlet chamber has one central water inlet 204, two water outlets 205 uniformly arranged on the outer periphery of the water inlet chamber, two guide channels 206 on the bottom wall of the fixed seat 201, one flow control member 203 in the water inlet chamber, and one blocking portion 2023 composed of an inclined surface structure on the inner side of the rotating member 202.

[0102] In a preferred solution of this embodiment, the water inlet chamber has one central water inlet 204, four water outlets 205 uniformly arranged on the outer periphery of the water inlet chamber, four guide channels 206 on the bottom wall of the fixed seat 201, and two flow control members 203 in the water inlet chamber. The two flow control members 203 are always located in two guide channels 206 arranged at intervals. The inner side of the rotating member 202 is provided with two blocking portions 2023, each composed of an inclined surface structure. The two inclined surface structures both extend inclinedly from the top wall of the receiving cavity toward the central water inlet 204, with their extension ends abutting each other. It should be noted that the two inclined surface structures are oppositely arranged and each correspond to the water outlet 205 blocked by the flow control member 203.

[0103] In this embodiment, the extension ends of the two inclined surface structures are located on the perpendicular bisector of the central water inlet 204. Of course, the extension ends may be at other positions as long as they can prevent the flow control member 203 from entering the central water inlet 204.

[0104] The solution according to this embodiment enables the flow control member 203 to, under the impact of water flow, jump from one guide channel 206 into another guide channel 206, thereby alternately blocking at least one water outlet 205 in the water inlet chamber.Embodiment 2

[0105] This embodiment provides a spray arm assembly comprising the water inlet structure 2 for the spray arm assembly according to Embodiment 1.

[0106] The solution according to this embodiment comprises: at least two spray arm bodies 1 extend outward from the outer edge of the housing, and each water outlet 205 is correspondingly connected to and communicates with a respective spray arm body 1.

[0107] In the above solution, in use, the spray arm bodies 1 are directly and correspondingly connected to and communicate with the water outlets 205 of the water inlet structure 2. The spray holes on the spray arm bodies 1 are arranged in different directions, thereby enabling the spray arm bodies 1 to alternately rotate clockwise or counterclockwise, increasing the spray region.

[0108] As shown in FIG. 4 to FIG. 6, in another solution of this embodiment, the water inlet structure 2 comprises a fixed seat 201 and a rotating member 202 mounted on the fixed seat 201, without a housing. The spray arm assembly comprises a ring-like structure 208 and a cover covering the ring-like structure 208. The outer periphery of the fixed seat 201 is fixedly connected to the inner side wall of the ring-like structure 208. At least two spray arm bodies 1 extend outward from the edge of the ring-like structure 208, and the water outlets 205 are correspondingly arranged relative to the spray arm bodies 1.

[0109] In one specific solution of this embodiment, the spray arm assembly comprises a hollow ring-like structure 208. At the edge of the ring-like structure 208, two spray arm bodies 1 extend outward, extending along the same straight line, and the spray holes on the two spray arm bodies 1 are arranged on the same side. The connection between the spray arm body 1 and the ring-like structure is provided with a water inlet. The inner side wall of the ring-like structure 208 is fixedly connected to the outer periphery of the fixed seat 201, and the water inlet of the spray arm body 1 corresponds to the water outlet 205.

[0110] In use, water enters through the central water inlet 204, pushing the flow control member 203 at the edge of the central water inlet 204 to the position of the water outlet 205 corresponding to the water inlet of one spray arm body 1, and blocking that water outlet 205. The other spray arm body 1 discharges water through the spray holes, and the reaction force from water spraying drives the spray arm assembly to rotate clockwise for spraying. When water supply stops, the flow control member 203 moves from the current water outlet 205 toward the central water inlet 204 and pushes the side wall of the rotating member 202, causing the rotating member 202 to rotate. When water enters again through the central water inlet 204, the flow control member 203 crosses the transition portion 2013 to block the water outlet 205 corresponding to the water inlet of another spray arm body 1. That other spray arm body 1 does not discharge water. At this time, the previously closed spray arm body 1 discharges water through the spray holes, and the reaction force from water spraying drives the spray arm assembly to rotate counterclockwise for spraying.

[0111] The solution according to this embodiment enables the water inlets of two spray arm bodies 1 to be alternately opened, allowing the spray arm assembly to alternately rotate clockwise and counterclockwise for spraying, thereby increasing the spray region and enhancing the cleaning effect.

[0112] As a preferred solution of this embodiment: four spray arm bodies 1 are uniformly arranged along the edge of the housing. Two flow control members 203 are provided, wherein the two flow control members 203 alternately block or open two oppositely arranged water outlets 205, thereby alternately opening or closing two oppositely arranged spray arm bodies 1.

[0113] In the above solution, four spray arm bodies 1 extend outward from the edge of the ring-like structure 208. Two spray arm bodies 1 extending along the same straight line form one group. The spray holes on the two groups of spray arms are arranged in different directions. One group of spray holes are all arranged in the clockwise direction, and the other group are all arranged in the counterclockwise direction. The water inlet chamber is provided with one central water inlet 204, four guide channels 206 on the bottom wall of the fixed seat 201, two flow control members 203 in the movement channel 2021, and two blocking portions 2023 each composed of an inclined surface structure in the movement channel 2021.

[0114] In use, water enters through the central water inlet 204, pushing the two flow control members 203 at the edge of the central water inlet 204 to the positions of the water outlets 205 corresponding to the water inlets of the first group of spray arm bodies 1 to block them. The second group of two spray arm bodies 1 discharge water, driving the spray arm assembly to rotate clockwise. When water supply stops, the two flow control members 203 move from their current positions along the guide channels 206 toward the central water inlet 204 and push the side walls of the rotating member 202, causing the rotating member 202 to rotate. When water enters again through the central water inlet 204, the two flow control members 203 respectively cross the transition portions 2013 on the two oppositely arranged guide walls 2011 and block the two water outlets 205 corresponding to the second group of spray arm bodies 1. At this time, the first group of two spray arm bodies 1 discharge water, driving the spray arm assembly to rotate counterclockwise for spraying.

[0115] In other solutions of this embodiment, the number of spray arms can be other numbers greater than or equal to 2, and the number of flow control members 203 can be other numbers greater than or equal to 1.

[0116] The solution according to this embodiment further increases the spray range due to the increased number of spray arm bodies 1, providing a wide spray region.

[0117] The solution according to this embodiment further comprises: the flow control member 203 has a spherical structure provided with a magnetic attraction region. The spray arm assembly further comprises a magnetic attraction member 207 configured to generate attraction force on the magnetic attraction region. The magnetic attraction member 207 has a ring-like structure embedded in the spray arm body 1 at the position of the water outlet 205. The gravity of the flow control member 203 is greater than the attraction force generated by the magnetic attraction member 207.

[0118] In the above solution, a ring-like magnetic attraction member 207 is embedded at the position of the water inlet of the spray arm body 1. The magnetic attraction member 207 has magnetic attraction force. The flow control member 203 has a spherical structure provided with a magnetic attraction region. When the spherical structure moves to the position of the water inlet of the spray arm body 1, the magnetic attraction member 207 provides attraction force to the spherical structure, enhancing the sealing between the spherical structure and the water outlet 205. In the solution according to this embodiment, the entire outer surface of the spherical structure is a magnetic attraction region, so that regardless of which position of the spherical structure contacts the water inlet of the spray arm body 1 for blocking, it can receive the attraction force from the magnetic attraction member 207.

[0119] Regarding the above solution, it should be noted that the attraction force of the magnetic attraction member 207 is less than the gravity of the spherical structure. Therefore, after the spherical structure is no longer subjected to the action of water flow, it can move to the edge position of the central water inlet 204 under its own gravity.

[0120] The solution according to this embodiment enables the spray arm bodies 1 to alternately rotate clockwise or counterclockwise, increasing the spray region.Embodiment 3

[0121] This embodiment provides a dishwasher on which the spray arm assembly according to Embodiment 2 is installed.

[0122] The dishwasher according to this embodiment has a motor installed thereon. The motor starts to control water supply into the dishwasher. Water flows through pipelines and the central water inlet 204 into the water inlet chamber, impacting the flow control member 203 in the water inlet chamber to move to the position of the water outlet 205 to block the water outlet 205. Water flows through the unblocked water outlets 205 into the corresponding spray arm bodies 1, causing the spray arm bodies 1 to discharge water and driving the spray arm assembly to rotate for spraying. When the motor stops, water supply stops. The flow control member 203 moves along the guide channel 206 to the edge of the central water inlet 204 under its own gravity and is caught by the blocking portion 2023 to stop moving. When water supply starts again, the flow control member 203 is impacted to move to the position of another water outlet 205 to block that water outlet 205. The spray arm body 1 corresponding to the unblocked water outlet 205 discharges water, driving the spray arm assembly to rotate in the reverse direction for spraying.

[0123] The solution according to this embodiment enables the spray arms to alternately rotate clockwise and counterclockwise, increasing the spray region and achieving cleaner washing of tableware in the dishwasher.

[0124] The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art can make modifications or equivalent substitutions to the technical solutions of the present invention based on the disclosed technical content. Any modifications, equivalent substitutions, improvements, and the like made within the spirit and principle of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A water inlet structure of a spray arm assembly, comprising: a water inlet chamber having a central water inlet and at least two water outlets, wherein the water inlet chamber is provided with guide channels each communicating with a respective one of the water outlets, and each of the guide channels is in communication with the central water inlet; and a flow control member being configured to, under the impact of water flow, move from one guide channel to another guide channel for alternately blocking at least one of the water outlets.

2. The water inlet structure of the spray arm assembly according to claim 1, wherein the water inlet chamber is provided with a fixed seat, the central water inlet is arranged in a central region of the fixed seat, and at least two guide channels are formed on the fixed seat, with the flow control member moving within the guide channels; and preferably, the fixed seat is a circular structure.

3. The water inlet structure of the spray arm assembly according to claim 2, wherein the fixed seat is extended upward and inclined radially from an outer periphery of the central water inlet.

4. The water inlet structure of the spray arm assembly according to claim 2 or 3, wherein a bottom wall of the fixed seat is provided with guide walls, each of the guide walls extending from the outer periphery of the central water inlet toward an outer peripheral region of the fixed seat, with an extension end located on one side of the water outlet; adjacent guide walls define therebetween a guide channel communicating the central water inlet with one of the water outlets; and each of the guide walls is provided with a transition portion, wherein the flow control member is configured to, under the impact of water flow, cross the transition portion from one guide channel into another guide channel to block the water outlet at an end of said another guide channel.

5. The water inlet structure of the spray arm assembly according to claim 4, wherein under a normal condition, the flow control member remains at an end of the guide channel adjacent to the central water inlet; when water supply starts, the flow control member is driven to move along the guide channel under the impact of water flow, and cross the transition portion into another guide channel at the transition portion, and continue to move along said another guide channel to the water outlet to block the water outlet; and when water supply stops, the flow control member is configured to return along said another guide channel to the outer periphery of the central water inlet under an action of gravity.

6. The water inlet structure of the spray arm assembly according to claim 4 or 5, wherein a middle region of the guide wall has a bent portion, the bent portion extending along a tangential direction of the central water inlet; and the transition portion is arranged on the bent portion and corresponds to the water outlet.

7. The water inlet structure of the spray arm assembly according to claim 6, wherein the bent portion has a first side wall facing the central water inlet and a second side wall facing the water outlet; and an angle between the first side wall and the bottom wall of the fixed seat is greater than an angle between the second side wall and the bottom wall of the fixed seat.

8. The water inlet structure of the spray arm assembly according to claim 7, wherein the guide wall has a first extension portion and a second extension portion, and the first extension portion, the bent portion, and the second extension portion are sequentially connected; and both the first extension portion and the second extension portion have a certain thickness; preferably, the first extension portion and the second extension portion are centrally symmetrically arranged relative to the bent portion.

9. The water inlet structure of the spray arm assembly according to claim 8, wherein extension ends of the guide walls are located on a same side of the water outlets along a circumferential direction of the fixed seat; the first extension portion is extended from the outer periphery of the central water inlet toward the water outlet, with an extension end connected to the bent portion; the bent portion is extended along the tangential direction of the central water inlet, with an extension end connected to the second extension portion; and the second extension portion is extended toward the water outlet, with an extension end located on one side of the water outlet.

10. The water inlet structure of the spray arm assembly according to any one of claims 2 to 9, wherein a rotating member is disposed on the fixed seat, with an outer peripheral portion of the rotating member rotatably connected to the fixed seat; and the rotating member is configured to guide the flow control member, which is under the impact of water flow, to move from one guide channel into another guide channel; preferably, the rotating member is arranged within the water inlet chamber.

11. The water inlet structure of the spray arm assembly according to claim 10, wherein when water supply starts, the rotating member is configured to guide the flow control member to move from one guide channel into another guide channel; and when water supply stops, the flow control member is configured to move from the water outlet along the another guide channel toward the central water inlet, thereby driving the rotating member to rotate.

12. The water inlet structure of the spray arm assembly according to claim 10 or 11, wherein the rotating member is internally provided with a movement channel, and the flow control member is configured to move along the movement channel under the impact of water flow, moving from one guide channel into another guide channel.

13. The water inlet structure of the spray arm assembly according to claim 12, wherein the rotating member comprises a top wall and two side walls, a receiving cavity formed by the top wall and the two side walls defines the movement channel, and the receiving cavity is arranged above the guide channel; and when the impact of water flow stops, the flow control member is configured to move along the another guide channel from the water outlet toward the central water inlet, pushing the side wall to drive the rotating member to rotate.

14. The water inlet structure of the spray arm assembly according to claim 13, wherein a limiting portion is provided between the side wall and an outer periphery of the rotating member; and the limiting portion is a plate-like structure horizontally arranged and configured to control the flow control member to move from one guide channel into an adjacent guide channel in the same circumferential direction.

15. The water inlet structure of the spray arm assembly according to claim 13 or 14, wherein the receiving cavity is provided with a blocking portion configured to prevent the flow control member from entering the central water inlet.

16. The water inlet structure of the spray arm assembly according to claim 15, wherein the blocking portion comprises at least one inclined surface structure inclinedly arranged from the top wall toward the central water inlet.

17. The water inlet structure of the spray arm assembly according to claim 16, wherein the flow control member is a spherical structure, and a diameter of the flow control member is greater than a minimum distance from an outer peripheral edge of the central water inlet to the inclined surface structure.

18. The water inlet structure of the spray arm assembly according to any one of claims 10 to 17, wherein a housing is disposed above the rotating member, with an outer peripheral edge of the housing is sealingly connected to an outer periphery of the fixed seat; and preferably, the housing and the fixed seat together define the water inlet chamber.

19. A spray arm assembly, comprising the water inlet structure of the spray arm assembly according to any one of claims 1 to 18; and preferably, at least two spray arm bodies are extended outward from an outer peripheral edge of a housing, each spray arm body being correspondingly connected to and communicating with a respective water outlet.

20. The spray arm assembly according to claim 19, wherein the flow control member is a spherical structure provided with a magnetic attraction region; the spray arm assembly further comprises a magnetic attraction member configured to generate an attraction force on the magnetic attraction region; and the magnetic attraction member is a ring-like structure embedded in the spray arm body at a position of the water outlet.

21. The spray arm assembly according to claim 20, wherein a gravity of the flow control member is greater than the attraction force generated by the magnetic attraction member.

22. The spray arm assembly according to any one of claims 19 to 21, wherein four spray arm bodies are provided, and uniformly distributed along an outer edge of the housing; and two flow control members are provided, wherein the two flow control members are configured to alternately block or open two oppositely arranged water outlets.

23. A dishwasher, comprising the spray arm assembly according to any one of claims 19 to 22.

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