Flow dividing device, spraying arm and dish washing machine

Abstract

The utility model relates to the technical field of dish washing machines, in particular to a flow dividing device, a spraying arm and a dish washing machine, and aims to solve the problem that an existing spraying arm pipeline is complex in structural design. Therefore, the flow dividing device comprises a first shell, a second shell and a flow dividing device, the second shell is connected with the first shell, a containing cavity is formed between the second shell and the first shell, and a plurality of water outlets are formed in the second shell; the supporting piece is arranged in the containing cavity and divides the containing cavity into a first cavity body and a second cavity body, and a first through hole communicating with the first cavity body and the second cavity body is formed in the supporting piece; the movable part is arranged in the first cavity and rotationally connected with the second shell, a second through hole communicating with the first through hole and the water outlet is formed in the movable part, and the movable part can rotate relative to the second shell so that the second through hole and the water outlet can communicate alternately. According to the flow dividing device, water flow can be distributed to the multiple pipelines through one water inlet pipeline, and the pipeline design is simplified.

Description

Technical Field

[0001] This application relates to the technical field of dishwashers, and specifically provides a flow splitting device, a spray arm, and a dishwasher. Background Art

[0002] Currently, household dishwashers on the market generally use the spray method to clean tableware. To enhance the cleaning effect, these dishwashers are usually designed with spray arms that are driven to rotate forward and backward by the water flow, thereby comprehensively cleaning the tableware. The rotation of the spray arm can not only cover a larger area but also effectively remove the dirt on the tableware, improving the washing efficiency.

[0003] In the related art, the realization of the forward and reverse rotation of the spray arm requires two-way water supply, one for the forward rotation of the spray arm and the other for the reverse rotation of the spray arm. Although this design effectively improves the washing effect, it also makes the water supply system complex. Because it is necessary to ensure that the water pressure and flow rate of both water supply channels can be stably controlled, which makes the pipeline design more complex.

[0004] In view of this, a new technical solution is needed in this field to solve the above problems. Summary of the Utility Model

[0005] This application aims to solve the above technical problems, that is, to solve the problem of the complex pipeline structure design of the existing spray arm.

[0006] In a first aspect, this application provides a flow splitting device, including:

[0007] A first housing, on which a water inlet is provided;

[0008] A second housing, which is connected to the first housing, and a receiving cavity is formed between the second housing and the first housing. A plurality of drain ports are provided on the second housing;

[0009] A support member, which is arranged in the receiving cavity and divides the receiving cavity into a first chamber and a second chamber. A first through hole communicating the first chamber and the second chamber is provided on the support member;

[0010] A movable member, which is arranged in the first chamber and is rotatably connected to the second housing. A second through hole communicating the first through hole and the drain port is provided on the movable member. The movable member can rotate relative to the second housing so that the second through hole and the drain port are alternately communicated.

[0011] Optionally, the support member includes:

[0012] A support cylinder, one end of which has an opening facing the first chamber, and a part of the movable member is arranged in the support cylinder;

[0013] A connecting rod is connected between the support cylinder and the first housing. A plurality of the connecting rods are arranged circumferentially along the support cylinder, and a first through hole is formed between two adjacent connecting rods.

[0014] Optionally, the connecting rod is an arc-shaped rod, and the convex surface of the arc-shaped rod faces the second chamber.

[0015] Optionally, a rotating shaft is provided on the second housing, a shaft hole is provided on the movable member, and the rotating shaft is rotatably arranged in the shaft hole.

[0016] Optionally, the flow dividing device further includes:

[0017] A water inlet pipeline is connected to the first housing, and the water inlet is communicated with the water inlet pipeline.

[0018] Optionally, the flow dividing device further includes:

[0019] A water outlet pipeline, in which a plurality of independent pipelines are arranged, and each pipeline corresponds to and communicates with one of the drain ports.

[0020] Optionally, the pipeline includes a first pipeline and a second pipeline. An inner cylinder and an outer cylinder sleeved outside the inner cylinder are further provided at the water outlet end of the water outlet pipeline. The inner cylinder is communicated with the first pipeline, and the outer cylinder is communicated with the second pipeline.

[0021] Optionally, the pipeline further includes a third pipeline and a fourth pipeline, and the third pipeline is sleeved outside the fourth pipeline.

[0022] In a second aspect, the present application provides a spray arm, including:

[0023] A spray main body, in which independent first and second flow channels are formed;

[0024] The flow dividing device according to any one of the first aspect, the drain ports include a first drain port and a second drain port, the first drain port is communicated with the first flow channel, and the second drain port is communicated with the second flow channel.

[0025] In a third aspect, the present application provides a dishwasher, including the spray arm according to the second aspect.

[0026] In the case of adopting the above technical solutions, the flow dividing device of the present application can distribute water flow to multiple pipelines through one water inlet pipeline, simplifying the pipeline design. Description of the Drawings

[0027] The following describes the preferred embodiments of the present application with reference to the drawings, in which:

[0028] Figure 1It is a schematic structural diagram of a flow splitting device according to an embodiment of the present application;

[0029] Figure 2 It is a partial structural schematic diagram of a flow splitting device according to an embodiment of the present application;

[0030] Figure 3 It is a schematic structural diagram of the assembly of a first housing and a support member according to an embodiment of the present application;

[0031] Figure 4 It is a schematic structural diagram of a second housing according to an embodiment of the present application;

[0032] Figure 5 It is a schematic structural diagram of a movable member according to an embodiment of the present application;

[0033] Figure 6 It is a partial structural schematic diagram of a water outlet pipeline according to an embodiment of the present application;

[0034] Figure 7 It is a partial sectional structural schematic diagram of a spray arm according to an embodiment of the present application.

[0035] List of reference signs:

[0036] 11 - First housing, 110 - Water inlet, 111 - Accommodation cavity, 112 - First chamber, 113 - Second chamber, 12 - Second housing, 120 - Drain outlet, 1201 - First drain outlet, 1202 - Second drain outlet, 121 - Limiting portion, 123 - Rotating shaft, 13 - Movable member, 130 - Second through hole, 131 - Clamping portion, 132 - Shaft hole, 134 - Disk-shaped portion, 135 - Shaft rod, 2 - Spray main body, 21 - First flow channel, 22 - Second flow channel, 3 - Support member, 30 - First through hole, 31 - Support cylinder, 32 - Connecting rod, 4 - Water inlet pipeline, 5 - Water outlet pipeline, 51 - First pipeline, 52 - Second pipeline, 53 - Inner cylinder, 54 - Outer cylinder. Detailed implementation manners

[0037] The preferred implementation manners of the present application will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present application and are not used to limit the protection scope of the present application. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.

[0038] It should be noted that in the description of the present application, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the relevant devices or components must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, ordinal numbers such as "first", "second", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0039] In addition, it should also be noted that in the description of the present application, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0040] Please refer to Figure 1 , which is a flow splitting device according to an embodiment of the present application. First, refer to Figure 1 and 2 , the flow splitting device includes a first housing 11 and a second housing 12 connected to the first housing 11. An accommodation cavity 111 is formed between the first housing 11 and the second housing 12.

[0041] An inlet 110 is provided on the first housing 11, and a plurality of independent outlets 120 are provided on the second housing 12. The inlet 110 is connected to the inlet pipeline 4 to introduce water flow into the accommodation cavity 111. The outlets 120 can be connected to other connecting pipelines to discharge the water in the accommodation cavity 111 into each connecting pipeline, thereby achieving the splitting of the water flow.

[0042] Further, refer to Figure 2 and 3 , a support member 3 is provided in the accommodation cavity 111. The support member 3 divides the accommodation cavity 111 into a first chamber 112 and a second chamber 113. The first chamber 112 is communicated with the outlets 120, and the second chamber 113 is communicated with the inlet 110. A first through hole 30 communicating the first chamber 112 and the second chamber 113 is provided on the support member 3. The path of fluid flow is as follows: First, the fluid enters the second chamber 113 from the inlet pipeline 4 through the inlet 110. Subsequently, the fluid flows from the second chamber 113 into the first chamber 112 through the first through hole 30 on the support member 3, and then flows out from the first chamber 112 through the outlets 120 and enters different connecting pipelines.

[0043] Further, the flow splitting device further includes a movable member 13 disposed in the first chamber 112, and the movable member 13 is rotatably connected to the second housing 12. A second through hole 130 communicating the first through hole 30 and the drain port 120 is provided on the movable member 13. The movable member 13 can rotate relative to the second housing 12, so that the second through hole 130 communicates with the plurality of drain ports 120 alternately, realizing dynamic splitting of the water flow.

[0044] Specifically, referring to Figure 4 and 5 , the second housing 12 includes a circular member and a rotating shaft 123 extending along the central axis of the circular member, and the drain port 120 is provided on the circular member. The movable member 13 includes a disk-shaped portion 134 and a shaft rod 135 extending axially from the center of the disk-shaped portion 134. A shaft hole 132 is provided in the shaft rod 135, and the rotating shaft 123 is rotatably disposed in the shaft hole 132 of the movable member 13.

[0045] Further, the shape of the second through hole 130 matches the shape of the drain port 120. By adjusting and defining the position of the second through hole 130, it can communicate with the plurality of drain ports 120 alternately, that is, the plurality of drain ports 120 can communicate with the water inlet 110 alternately, thereby realizing splitting of the water flow.

[0046] In an implementable manner of the present application, the movable member 13 can be precisely controlled to rotate by a driving device. The driving device can be an electric motor or a pneumatic device to drive the movable member 13 to rotate around the rotating shaft 123 of the second housing 12. Through the control system of the driving device, the movable member 13 can be set at a specific position, so that the second through hole 130 is precisely docked with the corresponding drain port 120.

[0047] In another implementable manner of the present application, the movable member 13 rotates relying on the impact force of the water flow.

[0048] Specifically, referring to Figure 2 and 4 -5, when the water flow acts on the disk-shaped portion 134 of the movable member 13, under the action of the water flow impact force, the movable member 13 rotates around the rotating shaft 123, and the second through hole 130 on the disk-shaped portion 134 also rotates accordingly. The cooperation between the rotating shaft 123 and the shaft hole 132 helps to enhance the rotation stability of the movable member 13, and this stability provides a basis for precisely adjusting the position of the second through hole 130 and accurately docking it with the corresponding drain port 120.

[0049] The position of the second through-hole 130 is controlled by a limiting structure. A plurality of limiting portions 121 are provided on the rotating shaft 123 of the second housing 12, and a clamping portion 131 matching the limiting portion 121 is provided on the inner wall of the shaft hole 132 of the movable member 13. The structural design of the limiting portion 121 is matched with the position of the drain port 120. In this way, when the clamping portion 131 of the movable member 13 cooperates with different limiting portions 121, the second through-hole 130 can be limited to different positions, so as to achieve accurate docking with the drain ports 120 at different positions.

[0050] Specifically, when the impact force of the water flow acts on the movable member 13, the movable member 13 will rotate due to the thrust of the water flow and move towards the direction of the second housing 12. This movement will drive the clamping portion 131 to move towards the limiting portion 121, and the clamping portion 131 will be docked with one of the limiting portions 121, thus being limited to a specific position. At this time, the second through-hole 130 will be aligned with the drain port 120 at the corresponding position to complete the connection.

[0051] When the impact force of the water flow stops acting, due to the lack of driving force, the movable member 13 will move and stay at a preset position under the action of its own gravity or other external structures to prepare for the next movement.

[0052] When the water flow impacts the movable member 13 again, the impact force will push the movable member 13, causing the clamping portion 131 to continue to move towards the limiting portion 121. At this time, the clamping portion 131 will cooperate with another limiting portion 121, thus being limited to another position, and the second through-hole 130 will also be aligned with the drain port 120 at another corresponding position to complete the connection.

[0053] When the impact force of the water flow stops again, the movable member 13 will return to the preset position again. At this position, the next water flow impact will push the movable member 13 to move again. Thus, it can be seen that by indirectly introducing water flow into the first chamber 112, the movable member 13 can move cyclically between multiple positions, so that multiple drain ports 120 and the second through-hole 130 can achieve alternating connection. This process is repeated continuously, so as to finally achieve effective diversion of the water flow.

[0054] In summary, the movable member 13 can automatically adjust its position under the action of the water flow without external mechanical drive, which can improve the response speed of the diversion device.

[0055] In addition, when the impact force of the water flow acts on the movable member 13, the movable member 13 rotates around the axis and moves axially through the matching structure of the rotating shaft 123 and the shaft hole 132. This design reduces the swing and vibration of the movable member 13 during the rotation process, thus improving the stability of the cooperation between the clamping portion 131 and the limiting portion 121.

[0056] In addition, the structural design of the snap - connection part 131 and the limit part 121 in snap - connection cooperation has two functions. First, it can ensure that the water flow is accurately introduced into the drain opening 120 at the corresponding position, avoiding leakage, so as to achieve a more precise flow - splitting effect. Second, the cooperation between the limit part 121 and the snap - connection part 131 also helps to enhance the connection stability between the movable part 13 and the second housing 12, avoiding relative movement or misalignment between the two caused by water flow impact force or other factors.

[0057] In one embodiment, referring to Figure 3 , the support member 3 includes a support cylinder 31 and a connecting rod 32 connected between the outer side wall of the support cylinder 31 and the inner side wall of the first housing 11.

[0058] Specifically, the support cylinder 31 is a cylindrical member. One end of the support cylinder 31 has an opening facing the first chamber 112. This opening allows the shaft rod 135 part of the movable part 13 to be inserted into the interior of the support cylinder 31, and the inner diameter of the support cylinder 31 matches the outer diameter of the shaft rod 135 of the movable part 13 to ensure that the shaft rod 135 can rotate smoothly within the support cylinder 31.

[0059] Furthermore, a plurality of connecting rods 32 are connected to the outer side wall of the support cylinder 31, and the other ends of the connecting rods 32 are fixed to the inner side wall of the first housing 11, so as to realize the fixation between the support cylinder 31 and the first housing 11, and thus realize the stable connection between the support member 3 and the first housing 11.

[0060] In a preferred embodiment, the support member 3 and the first housing 11 can be an integrally formed member.

[0061] When the movable part 13 rotates along the rotating shaft 123, the support cylinder 31 provides stable support for the movable part 13, and this support function is more important in the above - mentioned scheme where the movable part 13 rotates by the action of water flow impact force.

[0062] Under the action of water flow impact force, the shaft rod 135 of the movable part 13 moves in both axial and circumferential directions within the support cylinder 31. The design of the support cylinder 31 helps to reduce the influence of water flow impact force on the shaft rod 135 of the movable part 13, so that the water flow impact force only acts on the disc - shaped part 134. This helps to reduce the vibration and offset of the movable part 13, and thus can improve the movement stability of the movable part 13.

[0063] The function of the connecting rod 32 is to firmly fix the support cylinder 31 within the first housing 11, providing support and stability. In addition, a first through - hole 30 is formed between two adjacent connecting rods 32 to enable fluid to flow between the first chamber 112 and the second chamber 113.

[0064] Furthermore, the first through-hole 30 helps to distribute the fluid to different areas, which can guide the flow of the fluid so that it flows along a predetermined path, thereby making the movable member 13 more stable during rotation.

[0065] In one embodiment, the connecting rod 32 is an arc-shaped rod. The arc-shaped rod has a curved surface, and the convex side of the curved surface faces the second chamber 113. This helps to guide the fluid to flow along its curved outer surface and prompts the fluid to flow along a predetermined path. At the same time, it also helps to reduce the vortices or dead ends generated during the fluid flow, thereby improving the fluid flow effect.

[0066] In one embodiment, referring to Figure 1 and 6 , the flow dividing device further includes a water outlet pipeline 5 for discharging the fluid in the flow dividing device. Specifically, a plurality of independent pipes are arranged in the water outlet pipeline 5, and each pipe corresponds to and communicates with a drainage port 120. In this way, the fluid discharged from different drainage ports 120 can flow out through different pipes.

[0067] In one embodiment, two drainage ports 120 are provided on the second housing 12, namely a first drainage port 1201 and a second drainage port 1202.

[0068] Referring to Figure 2 , when the first drainage port 1201 and the second drainage port 1202 are arranged side by side on the second housing 12, two independent first pipes 51 and second pipes 52 are arranged in the water outlet pipeline 5. The water inlet end of the first pipe 51 is communicated with the first drainage port 1201, and the water inlet end of the second pipe 52 is communicated with the second drainage port 1202. Further, an inner cylinder 53 is also communicated and arranged at the water outlet end of the first pipe 51, and an outer cylinder 54 is communicated and arranged at the water outlet end of the second pipe 52. The outer cylinder 54 is sleeved outside the inner cylinder 53. The structural design of the inner cylinder 53 and the outer cylinder 54 can guide the flow path of the fluid to provide a specific discharge path for the fluid.

[0069] In another embodiment, the pipe includes a third pipe and a fourth pipe. The third pipe is sleeved outside the fourth pipe (not shown in the figure). The third pipe is communicated with the first drainage port 1201, and the fourth pipe is communicated with the second drainage port 1202. This structure can also achieve the above effect, that is, guide the flow path of the fluid and provide a specific discharge path for the fluid.

[0070] The present application also provides a spray arm of a dishwasher, referring to Figure 7, the spray arm includes a spray body 2 with two independent flow channels inside: a first flow channel 21 and a second flow channel 22. When water flows through the first flow channel 21, the spray arm will rotate clockwise; while when water flows through the second flow channel 22, the spray arm will rotate in the reverse direction, counterclockwise.

[0071] The spray arm further includes the flow splitting device as described above. The first drain port 1201 is communicated with the first flow channel 21, and the second drain port 1202 is communicated with the second flow channel 22. In this way, the spray arm can achieve two-way water supply through one water inlet pipeline 4, thereby controlling the forward and reverse rotation of the spray arm.

[0072] The spray arm provided in this embodiment simplifies the complexity of the water supply channel while ensuring the washing effect, and also reduces the maintenance cost.

[0073] In one embodiment, the first drain port 1201 is communicated with the first flow channel 21 through a first pipeline 51. Specifically, the inner cylinder 53 is communicated with the first flow channel 21, and the water flow discharged through the inner cylinder 53 enters the first flow channel 21, thereby driving the spray arm to rotate clockwise; the second drain port 1202 is communicated with the second flow channel 22 through a second pipeline 52. Specifically, the outer cylinder 54 is communicated with the second flow channel 22, and the water flow discharged through the outer cylinder 54 enters the second flow channel 22, thereby driving the spray arm to rotate counterclockwise.

[0074] The structural design of the inner cylinder 53 and the outer cylinder 54 enables the water outlet pipeline 5 to better adapt to the flow channel structure inside the spray arm. This not only provides the spray arm with the ability to rotate bidirectionally, enabling it to cover a wider washing area, but also helps to reduce the occupied space of the pipeline structure.

[0075] In one embodiment, the first drain port 1201 is communicated with the first flow channel 21 through a third pipeline, and the water flow discharged through the third pipeline enters the first flow channel 21, thereby driving the spray arm to rotate clockwise; the second drain port 1202 is communicated with the second flow channel 22 through a fourth pipeline, and the water flow discharged through the fourth pipeline enters the second flow channel 22, thereby driving the spray arm to rotate counterclockwise.

[0076] This application also provides a dishwasher including the spray arm as described above. Since the spray arm has beneficial effects such as simplifying the water supply system and reducing the maintenance cost, the dishwasher can achieve a more comprehensive cleaning effect with a simpler water supply pipeline and lower cost by adopting this spray arm. Therefore, it is also more competitive in the market.

[0077] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principle of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

1. A flow splitting device, characterized in that, Comprising: A first housing, on which a water inlet is provided; A second housing, which is connected to the first housing, an accommodation cavity is formed between the second housing and the first housing, and a plurality of drain ports are provided on the second housing; A support member, which is disposed in the accommodation cavity and divides the accommodation cavity into a first chamber and a second chamber, and a first through hole communicating the first chamber and the second chamber is provided on the support member; A movable member, which is disposed in the first chamber and is rotatably connected to the second housing, a second through hole communicating the first through hole and the drain port is provided on the movable member, and the movable member can rotate relative to the second housing so that the second through hole and the drain port are alternately communicated.

2. The flow splitting device according to claim 1, wherein The support member includes: A support cylinder, one end of which has an opening facing the first chamber, and a part of the movable member is disposed in the support cylinder; Connecting rods, which are connected between the support cylinder and the first housing, a plurality of the connecting rods are arranged along the circumferential direction of the support cylinder, and the first through hole is formed between two adjacent connecting rods.

3. The flow splitting device according to claim 2, wherein The connecting rod is an arc-shaped rod, and the convex surface of the arc-shaped rod faces the second chamber.

4. The flow splitting device according to claim 1, characterized in that, A rotating shaft is provided on the second housing, a shaft hole is provided on the movable member, and the rotating shaft is rotatably disposed in the shaft hole.

5. The flow splitting device according to claim 1, characterized in that, The flow splitting device further includes: A water inlet pipeline, which is connected to the first housing, and the water inlet is communicated with the water inlet pipeline.

6. The flow splitting device according to any one of claims 1 to 5, characterized in that, The flow splitting device further includes: A water outlet pipeline, in which a plurality of independent pipelines are provided, and each pipeline corresponds to and communicates with one of the drain ports.

7. The flow dividing device according to claim 6, wherein The pipeline includes a first pipeline and a second pipeline, and an inner cylinder and an outer cylinder sleeved outside the inner cylinder are further provided at the water outlet end of the water outlet pipeline. The inner cylinder is communicated with the first pipeline, and the outer cylinder is communicated with the second pipeline.

8. The flow splitting device according to claim 6, characterized in that, The pipeline further includes a third pipeline and a fourth pipeline, and the third pipeline is sleeved outside the fourth pipeline.

9. A spray arm, characterized in that, Comprising: A spray main body, in which independent first and second flow channels are formed; The flow splitting device according to any one of claims 1 to 8, wherein the drain port includes a first drain port and a second drain port, the first drain port is communicated with the first flow channel, and the second drain port is communicated with the second flow channel.

10. A dishwasher, characterized in that, Comprising the spray arm according to claim 9.

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