Spraying arm mechanism

Abstract

The utility model relates to the technical field of dish washing machines, in particular to a spraying arm mechanism which comprises an inner water pipe and a middle spraying arm, the inner water pipe is arranged in an inner container of the dish washing machine, the middle spraying arm comprises a first pipeline assembly and a middle spraying head, one end of the first pipeline assembly is connected with the inner water pipe, and the other end of the first pipeline assembly is connected with the middle spraying head. The other end of the first pipeline assembly is connected with the middle spraying head, an auxiliary spraying assembly is arranged on the first pipeline assembly and comprises a second pipeline assembly and at least one auxiliary spraying arm which are communicated with each other, and the connecting position of the second pipeline assembly and the first pipeline assembly is arranged at the end away from the middle spraying head. The second pipeline assembly is located behind the bowl basket, the auxiliary spraying arm is located below the bowl basket, and the middle spraying arm and the auxiliary spraying arm wash tableware in the upper-layer bowl basket; the second pipeline assembly comprises a second connector and at least one second water inlet pipe, one end of the second water inlet pipe is connected with the second connector, and the other end of the second water inlet pipe is connected with the auxiliary spraying arm.

Description

Technical Field

[0001] The present disclosure relates to the technical field of dishwashers, and in particular to a spray arm mechanism. Background Art

[0002] With the development of the economy and the progress of society, dishwashers are gradually becoming intelligent. Using a dishwasher to wash dishes can save personal time. Dishwashers have strong decontamination capabilities and can completely eliminate bacteria on the surface of dishes. They can meet the needs of multiple functions such as cleaning, drying and sterilization, providing great convenience to people's daily lives.

[0003] The spray arm is an important part of the dishwasher. The household dishwashers currently on the market generally have two layers of bowl baskets in the inner tank of the dishwasher, and are also provided with an upper spray arm, a middle spray arm and a lower spray arm. The upper spray arm, the middle spray arm and the lower spray arm are connected to the internal circulation water circuit of the dishwasher through pipes, and rotate and spray water under the impetus of the water flow to spray and rinse the tableware loaded on the bowl basket. Among them, the lower spray arm is located at the bottom of the bowl basket to wash the tableware in the lower bowl basket, the upper spray arm is suspended at the top of the bowl basket, and the water spray hole on the upper spray arm faces downward to wash the tableware in the upper bowl basket, and the middle spray arm is located between the upper spray arm and the lower spray arm. Generally, the water spray hole of the middle spray arm is also set downward to wash the tableware in the upper bowl basket.

[0004] A Chinese patent with patent number 202110012321.3 discloses a spray arm assembly and a dishwasher, wherein the spray arm assembly includes a spray arm body and multiple nozzles; the spray arm body is provided with a water flow channel connected to a water source, multiple upper water outlets and multiple lower water outlets connected to the water flow channel, the water outlet direction of the upper water outlet is set upward, and the water outlet direction of the lower water outlet is set downward. Although the patent simplifies the pipeline of the dishwasher, making the overall space occupied by the spray arm assembly smaller, the water outlet assembly in the patent is located below the bowl basket, and no nozzle is provided on the water outlet assembly, which results in that the tableware located directly above the water outlet assembly is likely to not be effectively rinsed, resulting in poor cleaning effect of the tableware in the bowl basket. Utility Model Content

[0005] In view of the deficiencies or problems existing in the prior art, the present invention provides a spray arm mechanism, which has a compact structure and can effectively spray and wash the tableware in the bowl basket.

[0006] The technical solution adopted by the present disclosure to solve the above technical problems is: a spray arm mechanism, including an inner water pipe and a middle spray arm, the inner water pipe is arranged in the inner tank of the dishwasher, the middle spray arm includes a first pipe assembly and a middle spray head, one end of the first pipe assembly is connected to the inner water pipe, and the other end of the first pipe assembly is connected to the middle spray head, an auxiliary spray assembly is arranged on the first pipe assembly, and the auxiliary spray assembly includes a second pipe assembly and at least one auxiliary spray arm that are interconnected, the connection between the second pipe assembly and the first pipe assembly is arranged at an end away from the middle spray head, the second pipe assembly is located behind the bowl basket, the auxiliary spray arm is located below the bowl basket, and the middle spray arm and the auxiliary spray arm rinse the tableware in the upper bowl basket.

[0007] As a preferred embodiment, the second pipe assembly includes a second joint and at least one second water inlet pipe, one end of the second water inlet pipe is connected to the second joint, and the other end of the second water inlet pipe is connected to the auxiliary spray arm, and a first connecting port is provided on the first pipe assembly, and the second joint is connected to the first connecting port.

[0008] As a preferred embodiment, the second pipe assembly includes two second water inlet pipes, and the second joint includes three interfaces, one interface is connected to the first connecting port, and the remaining two interfaces are respectively connected to the two second water inlet pipes.

[0009] As a preferred embodiment, the auxiliary spray arm is provided with a plurality of first clamping parts and a plurality of first nozzles, the second joint is provided with a second clamping part, and the first clamping part and the second clamping part are used for connecting the bowl basket.

[0010] As a preferred embodiment, the two second water inlet pipes are respectively connected to auxiliary spray arms. After the auxiliary spray arms are connected to the second water inlet pipes, the two auxiliary spray arms are arranged in parallel and are located above the middle spray head.

[0011] As a preferred embodiment, the inner water pipe is provided with a second connecting port and a first connecting piece, the first connecting piece is arranged at the position of the second connecting port, the first connecting piece is clamped with the inner water pipe, and the first pipeline assembly is connected to the inner water pipe through the first connecting piece.

[0012] As a preferred embodiment, a first joint is provided on the first connecting member, an auxiliary joint is provided above and below the first joint, the first pipe assembly includes a first water inlet pipe and a connecting seat, one end of the first water inlet pipe is connected to the middle sprinkler head, the other end of the first water inlet pipe is connected to the connecting seat, the first connecting port is provided on the first water inlet pipe, and the connecting seat is provided with two third connecting ports along its length direction, and the two third connecting ports are respectively connected to the auxiliary joint and the first joint.

[0013] As a preferred embodiment, the second water inlet pipe includes a first connecting section, a second connecting section and an intermediate pipe which are interconnected, the intermediate pipe is arranged between the first connecting section and the second connecting section, the first connecting section is connected to the second joint, the second connecting section is connected to the auxiliary spray arm, the angle between the first connecting section and the intermediate pipe is greater than 90 degrees, the connection between the first connecting section and the second joint is located on the front side of the connecting seat, and the connection between the first connecting section and the intermediate pipe is located on the rear side of the connecting seat.

[0014] As a preferred embodiment, the intermediate pipeline is arranged horizontally, and the angle between the second connecting section and the intermediate pipeline is greater than or equal to 90 degrees.

[0015] As a preferred embodiment, the middle spray head is provided with three spray blades, each spray blade is provided with a plurality of second nozzles, and the orientation of each second nozzle is different.

[0016] As a preferred embodiment, the middle spray arm is arranged in the middle part of the inner water pipe, the upper part of the inner water pipe is connected to the upper spray arm, and the lower part of the inner water pipe is also connected to the lower spray arm.

[0017] Compared with existing products, since the connection between the second pipe assembly and the first pipe assembly is arranged at the end away from the middle spray head, the second pipe assembly is located behind the bowl basket, and the auxiliary spray arm is located below the bowl basket, the bowl basket can avoid the second pipe assembly, so that the bowl basket is completely located above the middle spray head and the auxiliary spray arm. In this way, the middle spray head and the auxiliary spray arm can rinse the tableware in the bowl basket in all directions without any dead corners, thereby achieving a good spraying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present application will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present application. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0019] Figure 1 This is one of the structural schematic diagrams of a spray arm mechanism disclosed in the present invention;

[0020] Figure 2 This is the second structural schematic diagram of a spray arm mechanism disclosed in the present invention;

[0021] Figure 3 This disclosure Figure 2 A partial enlarged view of the middle A;

[0022] Figure 4 This disclosure Figure 2A partial enlarged view of point B in the middle;

[0023] Figure 5 is a structural schematic diagram of the second water inlet pipe of the present invention;

[0024] Figure 6 This is the third structural schematic diagram of a spray arm mechanism disclosed in the present invention;

[0025] Figure 7 This disclosure Figure 6 A partial enlarged view of point C in the middle.

[0026] Description of reference numerals:

[0027] 1. Inner water pipe; 2. Middle spray arm; 21. Middle spray head; 21a. Second nozzle; 22. First water inlet pipe; 23. Connecting seat; 3. Auxiliary spray assembly; 31. Second water inlet pipe; 31a. First connecting section; 31b. Middle pipe; 31c. Second connecting section; 32. Auxiliary spray arm; 32a. First nozzle; 33. Second joint; 4. Lower spray head; 5. Upper spray arm; 51. Upper spray head; 52. Third water inlet pipe; 6. First clamping piece; 7. Second clamping piece; 8. First connecting piece; 9. First joint; 10. Auxiliary joint. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is described in detail, clearly and completely in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not used to limit the present disclosure.

[0029] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0030] Please see Figure 1As shown, an embodiment of the present disclosure provides a spray arm mechanism, including an inner water pipe 1 and a middle spray arm 2, wherein the inner water pipe 1 is arranged in the inner tank of the dishwasher, and the middle spray arm 2 is arranged in the middle of the inner water pipe 1. Specifically, the middle spray arm 2 includes a first pipe assembly and a middle spray head 21, one end of the first pipe assembly is connected to the inner water pipe 1, and the other end of the first pipe assembly is connected to the middle spray head 21. An auxiliary spray assembly 3 is arranged on the first pipe assembly, and the auxiliary spray assembly 3 includes a second pipe assembly and at least one auxiliary spray arm 32 that are interconnected, and the connection between the second pipe assembly and the first pipe assembly is arranged at an end away from the middle spray head 21, and the second pipe assembly is located behind the bowl basket, and the auxiliary spray arm 32 and the middle spray head 21 are both located below the bowl basket. Such an arrangement enables the bowl basket to avoid the second pipe assembly, and the entire bowl basket is completely located above the middle spray head 21 and the auxiliary spray arm 32. In this way, the middle spray head 21 and the auxiliary spray arm 32 can rinse the tableware in the bowl basket in all directions without generating dead angles, thereby achieving a good spraying effect.

[0031] Please also see Figure 2 As shown, in one embodiment of the present disclosure, an upper and lower layer of bowl baskets are arranged in the inner tank of the dishwasher, an upper spray arm 5 is connected to the upper part of the inner water pipe 1, and a lower spray arm is also connected to the lower part of the inner water pipe 1. The upper bowl basket is arranged between the upper spray arm 5 and the middle spray arm 2, and the upper spray arm 5 and the middle spray arm 2 rinse the tableware in the upper bowl basket, and the lower bowl basket is arranged between the lower spray arm and the middle spray arm 2, and the lower spray arm and the tableware in the lower bowl basket are rinsed. Specifically, the upper spray arm 5 includes a third water inlet pipe 52 and an upper spray head 51, and the upper spray head 51 is connected to the inner water pipe 1 through the third water inlet pipe 52, and the lower spray arm includes a spray arm connector and a lower spray head 4, and the lower spray head 4 is connected to the inner water pipe 1 through the spray arm connector. Since the middle spray arm 2 and the auxiliary spray arm 32 in the present disclosure are both for washing the upper bowl basket, the upper spray arm 5 is set in an "I" shape to meet the cleaning requirements, and the lower bowl basket is only washed by the lower spray arm. In order to enhance the cleaning effect of the tableware in the lower bowl basket, the lower spray head 4 is set to three spray blades, that is, a trident type, and each spray blade is provided with a plurality of third nozzles, and each third nozzle has a different direction, so that the tableware located at various angles in the bowl basket can be washed.

[0032] Please see Figure 1 to Figure 4As shown, in one embodiment of the present disclosure, the second pipe assembly includes a second joint 33 and at least one second water inlet pipe 31, one end of the second water inlet pipe 31 is connected to the second joint 33, the other end of the second water inlet pipe 31 is connected to the auxiliary spray arm 32, and the first pipe assembly is provided with a first connection port, and the second joint 33 is connected to the first connection port. That is, after the water in the inner water pipe 1 enters the first pipe assembly, it is divided into two paths, one path flows to the middle spray head 21, and the other path flows to the second water inlet pipe 31 and finally flows to the auxiliary spray arm 32. Preferably, the second pipe assembly includes two second water inlet pipes 31, and the second joint 33 includes three interfaces, one interface is connected to the first connection port, and the other two interfaces are respectively connected to the two second water inlet pipes 31. The two second water inlet pipes 31 are respectively connected to the auxiliary spray arms 32. After the auxiliary spray arms 32 are connected to the second water inlet pipes 31, the two auxiliary spray arms 32 are arranged in parallel, and the two auxiliary spray arms 32 are located above the middle spray head 21. The two auxiliary spray arms 32 can be arranged to clean the dishes in the upper bowl basket more comprehensively; since the auxiliary spray arms 32 do not rotate during operation, the auxiliary spray arms 32 are subjected to a greater force from the water when spraying water, and the two auxiliary spray arms 32 are arranged in parallel to balance the force on each auxiliary spray arm 32, making the operation of the auxiliary spray arms 32 more stable, and avoiding shaking of the auxiliary spray arms 32 after long-term operation, thereby reducing the cleaning effect.

[0033] Please also see Figure 6 and Figure 7As shown, further, the inner water pipe 1 is provided with a second connection port and a first connection member 8, the first connection member 8 is provided at the position of the second connection port, the first connection member 8 is clamped with the inner water pipe 1, and the first pipe assembly is connected with the inner water pipe 1 through the first connection member 8. Further, a first joint 9 is provided on the first connection member 8, and an auxiliary joint 10 is provided above and below the first joint 9. The first pipe assembly includes a first water inlet pipe 22 and a connection seat 23, one end of the first water inlet pipe 22 is connected to the middle sprinkler head 21, and the other end of the first water inlet pipe 22 is connected to the connection seat 23. The first connection port is provided on the first water inlet pipe 22, and the connection seat 23 is provided with two third connection ports along its length direction, and the two third connection ports are respectively connected to the auxiliary joint 10 and the first joint 9. The first joint 9 is water-permeable, and the auxiliary joint 10 is not water-permeable. The outer peripheral walls of the first joint 9 and the auxiliary joint 10 are provided with a sealing portion, and the connection seat 23 is provided with two positioning ports, and the positioning ports and the sealing portion are interference fit. One first joint 9 is provided, and an auxiliary joint 10 is provided above and below. Two positioning ports are provided, and the two positioning ports correspond to the first joint 9 and the auxiliary joint 10 respectively. The first joint 9 is kept normally open, and the auxiliary joint 10 is always closed to ensure the uniqueness of water inlet, so as to improve the stability of waterway control. The more constant water flow supply makes the water pressure in the first pipe assembly more stable, thereby ensuring the stability of the water outlet of the auxiliary spray arm 32 and the middle spray head 21, so as to achieve a better washing effect. In addition, such a setting is also convenient for adjusting the height of the auxiliary spray arm 32 and the middle spray head 21. When a higher height is required, the connecting seat 23 is connected to the first joint 9 and the auxiliary joint 10 above it. When a lower height is required, the connecting seat 23 is connected to the first joint 9 and the auxiliary joint 10 below it. In this way, it can adapt to bowl baskets of different heights.

[0034] like Figure 5 As shown, further, the second water inlet pipe 31 includes a first connecting section 31a, a second connecting section 31c and an intermediate pipe 31b which are interconnected. The intermediate pipe 31b is arranged between the first connecting section 31a and the second connecting section 31c. The first connecting section 31a is connected to the second joint 33, and the second connecting section 31c is connected to the auxiliary spray arm 32. The angle between the first connecting section 31a and the intermediate pipe 31b is greater than 90 degrees, so that the auxiliary spray arm 32 is deployed to both sides and has a wider spray range. The connection between the first connecting section 31a and the second joint 33 is located on the front side of the connecting seat 23, and the connection between the first connecting section 31a and the intermediate pipe 31b is located on the rear side of the connecting seat 23. The upper bowl basket is located on the front side of the connection between the first connecting section 31a and the second joint 33. After the two second water inlet pipes 31 are connected to the second joint 33, a concave avoidance portion is formed between the two first connecting sections 31a of the two second water inlet pipes 31 to avoid the connecting seat 23 and the inner water pipe 1.

[0035] In order to allow water to enter the auxiliary spray arm 32 more smoothly while saving space to the greatest extent, the middle pipe 31b is arranged horizontally and the second connecting section 31c is arranged vertically, so that the angle between the second connecting section 31c and the middle pipe 31b is equal to 90 degrees.

[0036] like Figure 2 and Figure 4 As shown, in order to provide a wider cleaning range and better cleaning effect for the tableware in the upper bowl basket, the middle spray head 21 is provided with three spray blades, each of which is provided with a plurality of second nozzles 21a, and each second nozzle 21a is oriented in a different direction, so that the second nozzle 21a sprays water in all directions to rinse the tableware. The auxiliary spray arm 32 is provided with a plurality of first nozzles 32a, and it can be understood that the first nozzle 32a and the second nozzle 21a are both arranged upward. The middle spray head 21 rotates when working, and sprays while rotating, so that the tableware located in the middle of the bowl basket can be rinsed. The two auxiliary spray arms 32 are respectively located on the left and right sides below the bowl basket, which can assist the middle spray head 21 in rinsing the tableware on the inner side of the bowl basket.

[0037] like Figure 2 to Figure 4 As shown, further, a plurality of first clamping parts 6 are provided on the auxiliary spray arm 32, and a second clamping part 7 is provided on the second joint 33. The first clamping parts 6 and the second clamping parts 7 are used to connect the bowl basket and fix the bowl basket on the spray arm mechanism. After the bowl basket is connected to the spray arm mechanism, the middle spray head 21 and the auxiliary spray arm 32 are both located below the bowl basket, and the second water inlet pipe 31 is located behind the bowl basket.

[0038] The present application is described in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A spray arm mechanism, characterized in that: The dishwasher comprises an inner water pipe (1) and a middle spray arm (2), wherein the inner water pipe (1) is arranged in the inner tank of the dishwasher, and the middle spray arm (2) comprises a first pipe assembly and a middle spray head (21), one end of the first pipe assembly is connected to the inner water pipe (1), and the other end of the first pipe assembly is connected to the middle spray head (21), an auxiliary spray assembly (3) is arranged on the first pipe assembly, and the auxiliary spray assembly (3) comprises a second pipe assembly and at least one auxiliary spray arm (32) which are interconnected, the connection between the second pipe assembly and the first pipe assembly is arranged at an end away from the middle spray head (21), the second pipe assembly is located behind the bowl basket, the auxiliary spray arm (32) is located below the bowl basket, and the middle spray arm (2) and the auxiliary spray arm (32) rinse the tableware in the upper bowl basket.

2. The spray arm mechanism according to claim 1, characterized in that: The second pipe assembly comprises a second joint (33) and at least one second water inlet pipe (31), one end of the second water inlet pipe (31) being connected to the second joint (33), and the other end of the second water inlet pipe (31) being connected to the auxiliary spray arm (32); a first connecting port is provided on the first pipe assembly, and the second joint (33) is connected to the first connecting port.

3. The spray arm mechanism according to claim 2, characterized in that: The second pipeline assembly comprises two second water inlet pipes (31), and the second joint (33) comprises three interfaces, one interface is connected to the first connection port, and the remaining two interfaces are respectively connected to the two second water inlet pipes (31).

4. The spray arm mechanism according to claim 2, characterized in that: The auxiliary spray arm (32) is provided with a plurality of first clamping parts (6) and a plurality of first nozzles (32a), the second joint (33) is provided with a second clamping part (7), and the first clamping part (6) and the second clamping part (7) are used for connecting the bowl basket.

5. The spray arm mechanism according to claim 3, characterized in that: The two second water inlet pipes (31) are respectively connected to auxiliary spray arms (32); after the auxiliary spray arms (32) are connected to the second water inlet pipes (31), the two auxiliary spray arms (32) are arranged in parallel, and the two auxiliary spray arms (32) are located above the middle spray head (21).

6. The spray arm mechanism according to claim 2, characterized in that: The first pipe assembly comprises a first water inlet pipe (22) and a connecting seat (23); one end of the first water inlet pipe (22) is connected to the middle spray head (21); the other end of the first water inlet pipe (22) is connected to the connecting seat (23); and the first connecting port is arranged on the first water inlet pipe (22).

7. The spray arm mechanism according to claim 1, characterized in that: The inner water pipe (1) is provided with a second connection port and a first connection piece (8), the first connection piece (8) being arranged at the position of the second connection port, the first connection piece (8) being clamped with the inner water pipe (1), and the first pipeline assembly being connected to the inner water pipe (1) via the first connection piece (8).

8. The spray arm mechanism according to claim 7, characterized in that: The first connecting member (8) is provided with a first joint (9), an auxiliary joint (10) is provided above and below the first joint (9), and the connecting seat (23) is provided with two third connecting ports along its length direction, the two third connecting ports being connected to the auxiliary joint (10) and the first joint (9) respectively.

9. The spray arm mechanism according to claim 6, characterized in that: The second water inlet pipe (31) comprises a first connecting section (31a), a second connecting section (31c) and an intermediate pipe (31b) which are interconnected; the intermediate pipe (31b) is arranged between the first connecting section (31a) and the second connecting section (31c); the first connecting section (31a) is connected to the second joint (33); the second connecting section (31c) is connected to the auxiliary spray arm (32); the angle between the first connecting section (31a) and the intermediate pipe (31b) is greater than 90 degrees; the connection between the first connecting section (31a) and the second joint (33) is located at the front side of the connecting seat (23); and the connection between the first connecting section (31a) and the intermediate pipe (31b) is located at the rear side of the connecting seat (23).

10. The spray arm mechanism according to claim 9, characterized in that: The intermediate pipe (31b) is arranged horizontally, and the angle between the second connecting section (31c) and the intermediate pipe (31b) is greater than or equal to 90 degrees.

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